xml.html
1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 2 "http://www.w3.org/TR/html4/loose.dtd"> 3 <html> 4 <head> 5 <title>The XML C parser and toolkit of Gnome</title> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> 7 </head> 8 <body bgcolor="#ffffff"> 9 <h1 align="center">The XML C parser and toolkit of Gnome</h1> 10 11 <h1>Note: this is the flat content of the <a href="index.html">web 12 site</a></h1> 13 14 <h1 style="text-align: center">libxml, a.k.a. gnome-xml</h1> 15 16 <p></p> 17 18 <p 19 style="text-align: right; font-style: italic; font-size: 10pt">"Programming 20 with libxml2 is like the thrilling embrace of an exotic stranger." <a 21 href="http://diveintomark.org/archives/2004/02/18/libxml2">Mark 22 Pilgrim</a></p> 23 24 <p>Libxml2 is the XML C parser and toolkit developed for the Gnome project 25 (but usable outside of the Gnome platform), it is free software available 26 under the <a href="http://www.opensource.org/licenses/mit-license.html">MIT 27 License</a>. XML itself is a metalanguage to design markup languages, i.e. 28 text language where semantic and structure are added to the content using 29 extra "markup" information enclosed between angle brackets. HTML is the most 30 well-known markup language. Though the library is written in C <a 31 href="python.html">a variety of language bindings</a> make it available in 32 other environments.</p> 33 34 <p>Libxml2 is known to be very portable, the library should build and work 35 without serious troubles on a variety of systems (Linux, Unix, Windows, 36 CygWin, MacOS, MacOS X, RISC Os, OS/2, VMS, QNX, MVS, VxWorks, ...)</p> 37 38 <p>Libxml2 implements a number of existing standards related to markup 39 languages:</p> 40 <ul> 41 <li>the XML standard: <a 42 href="http://www.w3.org/TR/REC-xml">http://www.w3.org/TR/REC-xml</a></li> 43 <li>Namespaces in XML: <a 44 href="http://www.w3.org/TR/REC-xml-names/">http://www.w3.org/TR/REC-xml-names/</a></li> 45 <li>XML Base: <a 46 href="http://www.w3.org/TR/xmlbase/">http://www.w3.org/TR/xmlbase/</a></li> 47 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc2396.txt">RFC 2396</a> : 48 Uniform Resource Identifiers <a 49 href="http://www.ietf.org/rfc/rfc2396.txt">http://www.ietf.org/rfc/rfc2396.txt</a></li> 50 <li>XML Path Language (XPath) 1.0: <a 51 href="http://www.w3.org/TR/xpath">http://www.w3.org/TR/xpath</a></li> 52 <li>HTML4 parser: <a 53 href="http://www.w3.org/TR/html401/">http://www.w3.org/TR/html401/</a></li> 54 <li>XML Pointer Language (XPointer) Version 1.0: <a 55 href="http://www.w3.org/TR/xptr">http://www.w3.org/TR/xptr</a></li> 56 <li>XML Inclusions (XInclude) Version 1.0: <a 57 href="http://www.w3.org/TR/xinclude/">http://www.w3.org/TR/xinclude/</a></li> 58 <li>ISO-8859-x encodings, as well as <a 59 href="http://www.cis.ohio-state.edu/rfc/rfc2044.txt">rfc2044</a> [UTF-8] 60 and <a href="http://www.cis.ohio-state.edu/rfc/rfc2781.txt">rfc2781</a> 61 [UTF-16] Unicode encodings, and more if using iconv support</li> 62 <li>part of SGML Open Technical Resolution TR9401:1997</li> 63 <li>XML Catalogs Working Draft 06 August 2001: <a 64 href="http://www.oasis-open.org/committees/entity/spec-2001-08-06.html">http://www.oasis-open.org/committees/entity/spec-2001-08-06.html</a></li> 65 <li>Canonical XML Version 1.0: <a 66 href="http://www.w3.org/TR/xml-c14n">http://www.w3.org/TR/xml-c14n</a> 67 and the Exclusive XML Canonicalization CR draft <a 68 href="http://www.w3.org/TR/xml-exc-c14n">http://www.w3.org/TR/xml-exc-c14n</a></li> 69 <li>Relax NG, ISO/IEC 19757-2:2003, <a 70 href="http://www.oasis-open.org/committees/relax-ng/spec-20011203.html">http://www.oasis-open.org/committees/relax-ng/spec-20011203.html</a></li> 71 <li>W3C XML Schemas Part 2: Datatypes <a 72 href="http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/">REC 02 May 73 2001</a></li> 74 <li>W3C <a href="http://www.w3.org/TR/xml-id/">xml:id</a> Working Draft 7 75 April 2004</li> 76 </ul> 77 78 <p>In most cases libxml2 tries to implement the specifications in a 79 relatively strictly compliant way. As of release 2.4.16, libxml2 passed all 80 1800+ tests from the <a 81 href="http://www.oasis-open.org/committees/xml-conformance/">OASIS XML Tests 82 Suite</a>.</p> 83 84 <p>To some extent libxml2 provides support for the following additional 85 specifications but doesn't claim to implement them completely:</p> 86 <ul> 87 <li>Document Object Model (DOM) <a 88 href="http://www.w3.org/TR/DOM-Level-2-Core/">http://www.w3.org/TR/DOM-Level-2-Core/</a> 89 the document model, but it doesn't implement the API itself, gdome2 does 90 this on top of libxml2</li> 91 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc959.txt">RFC 959</a> : 92 libxml2 implements a basic FTP client code</li> 93 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc1945.txt">RFC 1945</a> : 94 HTTP/1.0, again a basic HTTP client code</li> 95 <li>SAX: a SAX2 like interface and a minimal SAX1 implementation compatible 96 with early expat versions</li> 97 </ul> 98 99 <p>A partial implementation of <a 100 href="http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/">XML Schemas Part 101 1: Structure</a> is being worked on but it would be far too early to make any 102 conformance statement about it at the moment.</p> 103 104 <p>Separate documents:</p> 105 <ul> 106 <li><a href="http://xmlsoft.org/XSLT/">the libxslt page</a> providing an 107 implementation of XSLT 1.0 and common extensions like EXSLT for 108 libxml2</li> 109 <li><a href="http://gdome2.cs.unibo.it/">the gdome2 page</a> 110 : a standard DOM2 implementation for libxml2</li> 111 <li><a href="http://www.aleksey.com/xmlsec/">the XMLSec page</a>: an 112 implementation of <a href="http://www.w3.org/TR/xmldsig-core/">W3C XML 113 Digital Signature</a> for libxml2</li> 114 <li>also check the related links section for more related and active 115 projects.</li> 116 </ul> 117 <p> Hosting sponsored by <a href="http://www.aoemedia.de/opensource-cms.html" 118 >Open Source CMS services</a> from AOE media.</p> 119 120 <p>Logo designed by <a href="mailto:liyanage@access.ch">Marc Liyanage</a>.</p> 121 122 <h2><a name="Introducti">Introduction</a></h2> 123 124 <p>This document describes libxml, the <a 125 href="http://www.w3.org/XML/">XML</a> C parser and toolkit developed for the 126 <a href="http://www.gnome.org/">Gnome</a> project. <a 127 href="http://www.w3.org/XML/">XML is a standard</a> for building tag-based 128 structured documents/data.</p> 129 130 <p>Here are some key points about libxml:</p> 131 <ul> 132 <li>Libxml2 exports Push (progressive) and Pull (blocking) type parser 133 interfaces for both XML and HTML.</li> 134 <li>Libxml2 can do DTD validation at parse time, using a parsed document 135 instance, or with an arbitrary DTD.</li> 136 <li>Libxml2 includes complete <a 137 href="http://www.w3.org/TR/xpath">XPath</a>, <a 138 href="http://www.w3.org/TR/xptr">XPointer</a> and <a 139 href="http://www.w3.org/TR/xinclude">XInclude</a> implementations.</li> 140 <li>It is written in plain C, making as few assumptions as possible, and 141 sticking closely to ANSI C/POSIX for easy embedding. Works on 142 Linux/Unix/Windows, ported to a number of other platforms.</li> 143 <li>Basic support for HTTP and FTP client allowing applications to fetch 144 remote resources.</li> 145 <li>The design is modular, most of the extensions can be compiled out.</li> 146 <li>The internal document representation is as close as possible to the <a 147 href="http://www.w3.org/DOM/">DOM</a> interfaces.</li> 148 <li>Libxml2 also has a <a 149 href="http://www.megginson.com/SAX/index.html">SAX like interface</a>; 150 the interface is designed to be compatible with <a 151 href="http://www.jclark.com/xml/expat.html">Expat</a>.</li> 152 <li>This library is released under the <a 153 href="http://www.opensource.org/licenses/mit-license.html">MIT 154 License</a>. See the Copyright file in the distribution for the precise 155 wording.</li> 156 </ul> 157 158 <p>Warning: unless you are forced to because your application links with a 159 Gnome-1.X library requiring it, <strong><span 160 style="background-color: #FF0000">Do Not Use libxml1</span></strong>, use 161 libxml2</p> 162 163 <h2><a name="FAQ">FAQ</a></h2> 164 165 <p>Table of Contents:</p> 166 <ul> 167 <li><a href="FAQ.html#License">License(s)</a></li> 168 <li><a href="FAQ.html#Installati">Installation</a></li> 169 <li><a href="FAQ.html#Compilatio">Compilation</a></li> 170 <li><a href="FAQ.html#Developer">Developer corner</a></li> 171 </ul> 172 173 <h3><a name="License">License</a>(s)</h3> 174 <ol> 175 <li><em>Licensing Terms for libxml</em> 176 <p>libxml2 is released under the <a 177 href="http://www.opensource.org/licenses/mit-license.html">MIT 178 License</a>; see the file Copyright in the distribution for the precise 179 wording</p> 180 </li> 181 <li><em>Can I embed libxml2 in a proprietary application ?</em> 182 <p>Yes. The MIT License allows you to keep proprietary the changes you 183 made to libxml, but it would be graceful to send-back bug fixes and 184 improvements as patches for possible incorporation in the main 185 development tree.</p> 186 </li> 187 </ol> 188 189 <h3><a name="Installati">Installation</a></h3> 190 <ol> 191 <li><strong><span style="background-color: #FF0000">Do Not Use 192 libxml1</span></strong>, use libxml2</li> 193 <p></p> 194 <li><em>Where can I get libxml</em> ? 195 <p>The original distribution comes from <a 196 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> or <a 197 href="ftp://ftp.gnome.org/pub/GNOME/sources/libxml2/2.6/">gnome.org</a></p> 198 <p>Most Linux and BSD distributions include libxml, this is probably the 199 safer way for end-users to use libxml.</p> 200 <p>David Doolin provides precompiled Windows versions at <a 201 href="http://www.ce.berkeley.edu/~doolin/code/libxmlwin32/ ">http://www.ce.berkeley.edu/~doolin/code/libxmlwin32/</a></p> 202 </li> 203 <p></p> 204 <li><em>I see libxml and libxml2 releases, which one should I install ?</em> 205 <ul> 206 <li>If you are not constrained by backward compatibility issues with 207 existing applications, install libxml2 only</li> 208 <li>If you are not doing development, you can safely install both. 209 Usually the packages <a 210 href="http://rpmfind.net/linux/RPM/libxml.html">libxml</a> and <a 211 href="http://rpmfind.net/linux/RPM/libxml2.html">libxml2</a> are 212 compatible (this is not the case for development packages).</li> 213 <li>If you are a developer and your system provides separate packaging 214 for shared libraries and the development components, it is possible 215 to install libxml and libxml2, and also <a 216 href="http://rpmfind.net/linux/RPM/libxml-devel.html">libxml-devel</a> 217 and <a 218 href="http://rpmfind.net/linux/RPM/libxml2-devel.html">libxml2-devel</a> 219 too for libxml2 >= 2.3.0</li> 220 <li>If you are developing a new application, please develop against 221 libxml2(-devel)</li> 222 </ul> 223 </li> 224 <li><em>I can't install the libxml package, it conflicts with libxml0</em> 225 <p>You probably have an old libxml0 package used to provide the shared 226 library for libxml.so.0, you can probably safely remove it. The libxml 227 packages provided on <a 228 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> provide 229 libxml.so.0</p> 230 </li> 231 <li><em>I can't install the libxml(2) RPM package due to failed 232 dependencies</em> 233 <p>The most generic solution is to re-fetch the latest src.rpm , and 234 rebuild it locally with</p> 235 <p><code>rpm --rebuild libxml(2)-xxx.src.rpm</code>.</p> 236 <p>If everything goes well it will generate two binary rpm packages (one 237 providing the shared libs and xmllint, and the other one, the -devel 238 package, providing includes, static libraries and scripts needed to build 239 applications with libxml(2)) that you can install locally.</p> 240 </li> 241 </ol> 242 243 <h3><a name="Compilatio">Compilation</a></h3> 244 <ol> 245 <li><em>What is the process to compile libxml2 ?</em> 246 <p>As most UNIX libraries libxml2 follows the "standard":</p> 247 <p><code>gunzip -c xxx.tar.gz | tar xvf -</code></p> 248 <p><code>cd libxml-xxxx</code></p> 249 <p><code>./configure --help</code></p> 250 <p>to see the options, then the compilation/installation proper</p> 251 <p><code>./configure [possible options]</code></p> 252 <p><code>make</code></p> 253 <p><code>make install</code></p> 254 <p>At that point you may have to rerun ldconfig or a similar utility to 255 update your list of installed shared libs.</p> 256 </li> 257 <li><em>What other libraries are needed to compile/install libxml2 ?</em> 258 <p>Libxml2 does not require any other library, the normal C ANSI API 259 should be sufficient (please report any violation to this rule you may 260 find).</p> 261 <p>However if found at configuration time libxml2 will detect and use the 262 following libs:</p> 263 <ul> 264 <li><a href="http://www.info-zip.org/pub/infozip/zlib/">libz</a> : a 265 highly portable and available widely compression library.</li> 266 <li>iconv: a powerful character encoding conversion library. It is 267 included by default in recent glibc libraries, so it doesn't need to 268 be installed specifically on Linux. It now seems a <a 269 href="http://www.opennc.org/onlinepubs/7908799/xsh/iconv.html">part 270 of the official UNIX</a> specification. Here is one <a 271 href="http://www.gnu.org/software/libiconv/">implementation of the 272 library</a> which source can be found <a 273 href="ftp://ftp.ilog.fr/pub/Users/haible/gnu/">here</a>.</li> 274 </ul> 275 </li> 276 <p></p> 277 <li><em>Make check fails on some platforms</em> 278 <p>Sometimes the regression tests' results don't completely match the 279 value produced by the parser, and the makefile uses diff to print the 280 delta. On some platforms the diff return breaks the compilation process; 281 if the diff is small this is probably not a serious problem.</p> 282 <p>Sometimes (especially on Solaris) make checks fail due to limitations 283 in make. Try using GNU-make instead.</p> 284 </li> 285 <li><em>I use the SVN version and there is no configure script</em> 286 <p>The configure script (and other Makefiles) are generated. Use the 287 autogen.sh script to regenerate the configure script and Makefiles, 288 like:</p> 289 <p><code>./autogen.sh --prefix=/usr --disable-shared</code></p> 290 </li> 291 <li><em>I have troubles when running make tests with gcc-3.0</em> 292 <p>It seems the initial release of gcc-3.0 has a problem with the 293 optimizer which miscompiles the URI module. Please use another 294 compiler.</p> 295 </li> 296 </ol> 297 298 <h3><a name="Developer">Developer</a> corner</h3> 299 <ol> 300 <li><em>Troubles compiling or linking programs using libxml2</em> 301 <p>Usually the problem comes from the fact that the compiler doesn't get 302 the right compilation or linking flags. There is a small shell script 303 <code>xml2-config</code> which is installed as part of libxml2 usual 304 install process which provides those flags. Use</p> 305 <p><code>xml2-config --cflags</code></p> 306 <p>to get the compilation flags and</p> 307 <p><code>xml2-config --libs</code></p> 308 <p>to get the linker flags. Usually this is done directly from the 309 Makefile as:</p> 310 <p><code>CFLAGS=`xml2-config --cflags`</code></p> 311 <p><code>LIBS=`xml2-config --libs`</code></p> 312 </li> 313 <li><em>I want to install my own copy of libxml2 in my home directory and 314 link my programs against it, but it doesn't work</em> 315 <p>There are many different ways to accomplish this. Here is one way to 316 do this under Linux. Suppose your home directory is <code>/home/user. 317 </code>Then:</p> 318 <ul> 319 <li>Create a subdirectory, let's call it <code>myxml</code></li> 320 <li>unpack the libxml2 distribution into that subdirectory</li> 321 <li>chdir into the unpacked distribution 322 (<code>/home/user/myxml/libxml2 </code>)</li> 323 <li>configure the library using the "<code>--prefix</code>" switch, 324 specifying an installation subdirectory in 325 <code>/home/user/myxml</code>, e.g. 326 <p><code>./configure --prefix /home/user/myxml/xmlinst</code> {other 327 configuration options}</p> 328 </li> 329 <li>now run <code>make</code> followed by <code>make install</code></li> 330 <li>At this point, the installation subdirectory contains the complete 331 "private" include files, library files and binary program files (e.g. 332 xmllint), located in 333 <p><code>/home/user/myxml/xmlinst/lib, 334 /home/user/myxml/xmlinst/include </code> and <code> 335 /home/user/myxml/xmlinst/bin</code></p> 336 respectively.</li> 337 <li>In order to use this "private" library, you should first add it to 338 the beginning of your default PATH (so that your own private program 339 files such as xmllint will be used instead of the normal system 340 ones). To do this, the Bash command would be 341 <p><code>export PATH=/home/user/myxml/xmlinst/bin:$PATH</code></p> 342 </li> 343 <li>Now suppose you have a program <code>test1.c</code> that you would 344 like to compile with your "private" library. Simply compile it using 345 the command 346 <p><code>gcc `xml2-config --cflags --libs` -o test test.c</code></p> 347 Note that, because your PATH has been set with <code> 348 /home/user/myxml/xmlinst/bin</code> at the beginning, the xml2-config 349 program which you just installed will be used instead of the system 350 default one, and this will <em>automatically</em> get the correct 351 libraries linked with your program.</li> 352 </ul> 353 </li> 354 355 <p></p> 356 <li><em>xmlDocDump() generates output on one line.</em> 357 <p>Libxml2 will not <strong>invent</strong> spaces in the content of a 358 document since <strong>all spaces in the content of a document are 359 significant</strong>. If you build a tree from the API and want 360 indentation:</p> 361 <ol> 362 <li>the correct way is to generate those yourself too.</li> 363 <li>the dangerous way is to ask libxml2 to add those blanks to your 364 content <strong>modifying the content of your document in the 365 process</strong>. The result may not be what you expect. There is 366 <strong>NO</strong> way to guarantee that such a modification won't 367 affect other parts of the content of your document. See <a 368 href="http://xmlsoft.org/html/libxml-parser.html#xmlKeepBlanksDefault">xmlKeepBlanksDefault 369 ()</a> and <a 370 href="http://xmlsoft.org/html/libxml-tree.html#xmlSaveFormatFile">xmlSaveFormatFile 371 ()</a></li> 372 </ol> 373 </li> 374 <p></p> 375 <li><em>Extra nodes in the document:</em> 376 <p><em>For an XML file as below:</em></p> 377 <pre><?xml version="1.0"?> 378 <PLAN xmlns="http://www.argus.ca/autotest/1.0/"> 379 <NODE CommFlag="0"/> 380 <NODE CommFlag="1"/> 381 </PLAN></pre> 382 <p><em>after parsing it with the function 383 pxmlDoc=xmlParseFile(...);</em></p> 384 <p><em>I want to the get the content of the first node (node with the 385 CommFlag="0")</em></p> 386 <p><em>so I did it as following;</em></p> 387 <pre>xmlNodePtr pnode; 388 pnode=pxmlDoc->children->children;</pre> 389 <p><em>but it does not work. If I change it to</em></p> 390 <pre>pnode=pxmlDoc->children->children->next;</pre> 391 <p><em>then it works. Can someone explain it to me.</em></p> 392 <p></p> 393 <p>In XML all characters in the content of the document are significant 394 <strong>including blanks and formatting line breaks</strong>.</p> 395 <p>The extra nodes you are wondering about are just that, text nodes with 396 the formatting spaces which are part of the document but that people tend 397 to forget. There is a function <a 398 href="http://xmlsoft.org/html/libxml-parser.html">xmlKeepBlanksDefault 399 ()</a> to remove those at parse time, but that's an heuristic, and its 400 use should be limited to cases where you are certain there is no 401 mixed-content in the document.</p> 402 </li> 403 <li><em>I get compilation errors of existing code like when accessing 404 <strong>root</strong> or <strong>child fields</strong> of nodes.</em> 405 <p>You are compiling code developed for libxml version 1 and using a 406 libxml2 development environment. Either switch back to libxml v1 devel or 407 even better fix the code to compile with libxml2 (or both) by <a 408 href="upgrade.html">following the instructions</a>.</p> 409 </li> 410 <li><em>I get compilation errors about non existing 411 <strong>xmlRootNode</strong> or <strong>xmlChildrenNode</strong> 412 fields.</em> 413 <p>The source code you are using has been <a 414 href="upgrade.html">upgraded</a> to be able to compile with both libxml 415 and libxml2, but you need to install a more recent version: 416 libxml(-devel) >= 1.8.8 or libxml2(-devel) >= 2.1.0</p> 417 </li> 418 <li><em>Random crashes in threaded applications</em> 419 <p>Read and follow all advices on the <a href="threads.html">thread 420 safety</a> page, and make 100% sure you never call xmlCleanupParser() 421 while the library or an XML document might still be in use by another 422 thread.</p> 423 </li> 424 <li><em>The example provided in the web page does not compile.</em> 425 <p>It's hard to maintain the documentation in sync with the code 426 <grin/> ...</p> 427 <p>Check the previous points 1/ and 2/ raised before, and please send 428 patches.</p> 429 </li> 430 <li><em>Where can I get more examples and information than provided on the 431 web page?</em> 432 <p>Ideally a libxml2 book would be nice. I have no such plan ... But you 433 can:</p> 434 <ul> 435 <li>check more deeply the <a href="html/libxml-lib.html">existing 436 generated doc</a></li> 437 <li>have a look at <a href="examples/index.html">the set of 438 examples</a>.</li> 439 <li>look for examples of use for libxml2 function using the Gnome code 440 or by asking on Google.</li> 441 <li><a 442 href="http://svn.gnome.org/viewvc/libxml2/trunk/">Browse 443 the libxml2 source</a> , I try to write code as clean and documented 444 as possible, so looking at it may be helpful. In particular the code 445 of <a href="http://svn.gnome.org/viewvc/libxml2/trunk/xmllint.c?view=markup">xmllint.c</a> and of the various testXXX.c test programs should 446 provide good examples of how to do things with the library.</li> 447 </ul> 448 </li> 449 <p></p> 450 <li><em>What about C++ ?</em> 451 <p>libxml2 is written in pure C in order to allow easy reuse on a number 452 of platforms, including embedded systems. I don't intend to convert to 453 C++.</p> 454 <p>There is however a C++ wrapper which may fulfill your needs:</p> 455 <ul> 456 <li>by Ari Johnson <ari@btigate.com>: 457 <p>Website: <a 458 href="http://libxmlplusplus.sourceforge.net/">http://libxmlplusplus.sourceforge.net/</a></p> 459 <p>Download: <a 460 href="http://sourceforge.net/project/showfiles.php?group_id=12999">http://sourceforge.net/project/showfiles.php?group_id=12999</a></p> 461 </li> 462 </ul> 463 </li> 464 <li><em>How to validate a document a posteriori ?</em> 465 <p>It is possible to validate documents which had not been validated at 466 initial parsing time or documents which have been built from scratch 467 using the API. Use the <a 468 href="http://xmlsoft.org/html/libxml-valid.html#xmlValidateDtd">xmlValidateDtd()</a> 469 function. It is also possible to simply add a DTD to an existing 470 document:</p> 471 <pre>xmlDocPtr doc; /* your existing document */ 472 xmlDtdPtr dtd = xmlParseDTD(NULL, filename_of_dtd); /* parse the DTD */ 473 474 dtd->name = xmlStrDup((xmlChar*)"root_name"); /* use the given root */ 475 476 doc->intSubset = dtd; 477 if (doc->children == NULL) xmlAddChild((xmlNodePtr)doc, (xmlNodePtr)dtd); 478 else xmlAddPrevSibling(doc->children, (xmlNodePtr)dtd); 479 </pre> 480 </li> 481 <li><em>So what is this funky "xmlChar" used all the time?</em> 482 <p>It is a null terminated sequence of utf-8 characters. And only utf-8! 483 You need to convert strings encoded in different ways to utf-8 before 484 passing them to the API. This can be accomplished with the iconv library 485 for instance.</p> 486 </li> 487 <li>etc ...</li> 488 </ol> 489 490 <p></p> 491 492 <h2><a name="Documentat">Developer Menu</a></h2> 493 494 <p>There are several on-line resources related to using libxml:</p> 495 <ol> 496 <li>Use the <a href="search.php">search engine</a> to look up 497 information.</li> 498 <li>Check the <a href="FAQ.html">FAQ.</a></li> 499 <li>Check the <a href="http://xmlsoft.org/html/libxml-lib.html">extensive 500 documentation</a> automatically extracted from code comments.</li> 501 <li>Look at the documentation about <a href="encoding.html">libxml 502 internationalization support</a>.</li> 503 <li>This page provides a global overview and <a href="example.html">some 504 examples</a> on how to use libxml.</li> 505 <li><a href="examples/index.html">Code examples</a></li> 506 <li>John Fleck's libxml2 tutorial: <a href="tutorial/index.html">html</a> 507 or <a href="tutorial/xmltutorial.pdf">pdf</a>.</li> 508 <li>If you need to parse large files, check the <a 509 href="xmlreader.html">xmlReader</a> API tutorial</li> 510 <li><a href="mailto:james@daa.com.au">James Henstridge</a> wrote <a 511 href="http://www.jamesh.id.au/articles/libxml-sax/libxml-sax.html">some nice 512 documentation</a> explaining how to use the libxml SAX interface.</li> 513 <li>George Lebl wrote <a 514 href="http://www-106.ibm.com/developerworks/library/l-gnome3/">an article 515 for IBM developerWorks</a> about using libxml.</li> 516 <li>Check <a href="http://svn.gnome.org/viewvc/libxml2/trunk/TODO?view=markup">the TODO 517 file</a>.</li> 518 <li>Read the <a href="upgrade.html">1.x to 2.x upgrade path</a> 519 description. If you are starting a new project using libxml you should 520 really use the 2.x version.</li> 521 <li>And don't forget to look at the <a 522 href="http://mail.gnome.org/archives/xml/">mailing-list archive</a>.</li> 523 </ol> 524 525 <h2><a name="Reporting">Reporting bugs and getting help</a></h2> 526 527 <p>Well, bugs or missing features are always possible, and I will make a 528 point of fixing them in a timely fashion. The best way to report a bug is to 529 use the <a href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Gnome 530 bug tracking database</a> (make sure to use the "libxml2" module name). I 531 look at reports there regularly and it's good to have a reminder when a bug 532 is still open. Be sure to specify that the bug is for the package libxml2.</p> 533 534 <p>For small problems you can try to get help on IRC, the #xml channel on 535 irc.gnome.org (port 6667) usually has a few people subscribed which may help 536 (but there is no guarantee and if a real issue is raised it should go on the 537 mailing-list for archival).</p> 538 539 <p>There is also a mailing-list <a 540 href="mailto:xml@gnome.org">xml@gnome.org</a> for libxml, with an <a 541 href="http://mail.gnome.org/archives/xml/">on-line archive</a> (<a 542 href="http://xmlsoft.org/messages">old</a>). To subscribe to this list, 543 please visit the <a 544 href="http://mail.gnome.org/mailman/listinfo/xml">associated Web</a> page and 545 follow the instructions. <strong>Do not send code, I won't debug it</strong> 546 (but patches are really appreciated!).</p> 547 548 <p>Please note that with the current amount of virus and SPAM, sending mail 549 to the list without being subscribed won't work. There is *far too many 550 bounces* (in the order of a thousand a day !) I cannot approve them manually 551 anymore. If your mail to the list bounced waiting for administrator approval, 552 it is LOST ! Repost it and fix the problem triggering the error. Also please 553 note that <span style="color: #FF0000; background-color: #FFFFFF">emails with 554 a legal warning asking to not copy or redistribute freely the information 555 they contain</span> are <strong>NOT</strong> acceptable for the mailing-list, 556 such mail will as much as possible be discarded automatically, and are less 557 likely to be answered if they made it to the list, <strong>DO NOT</strong> 558 post to the list from an email address where such legal requirements are 559 automatically added, get private paying support if you can't share 560 information.</p> 561 562 <p>Check the following <strong><span style="color: #FF0000">before 563 posting</span></strong>:</p> 564 <ul> 565 <li>Read the <a href="FAQ.html">FAQ</a> and <a href="search.php">use the 566 search engine</a> to get information related to your problem.</li> 567 <li>Make sure you are <a href="ftp://xmlsoft.org/libxml2/">using a recent 568 version</a>, and that the problem still shows up in a recent version.</li> 569 <li>Check the <a href="http://mail.gnome.org/archives/xml/">list 570 archives</a> to see if the problem was reported already. In this case 571 there is probably a fix available, similarly check the <a 572 href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">registered 573 open bugs</a>.</li> 574 <li>Make sure you can reproduce the bug with xmllint or one of the test 575 programs found in source in the distribution.</li> 576 <li>Please send the command showing the error as well as the input (as an 577 attachment)</li> 578 </ul> 579 580 <p>Then send the bug with associated information to reproduce it to the <a 581 href="mailto:xml@gnome.org">xml@gnome.org</a> list; if it's really libxml 582 related I will approve it. Please do not send mail to me directly, it makes 583 things really hard to track and in some cases I am not the best person to 584 answer a given question, ask on the list.</p> 585 586 <p>To <span style="color: #E50000">be really clear about support</span>:</p> 587 <ul> 588 <li>Support or help <span style="color: #E50000">requests MUST be sent to 589 the list or on bugzilla</span> in case of problems, so that the Question 590 and Answers can be shared publicly. Failing to do so carries the implicit 591 message "I want free support but I don't want to share the benefits with 592 others" and is not welcome. I will automatically Carbon-Copy the 593 xml@gnome.org mailing list for any technical reply made about libxml2 or 594 libxslt.</li> 595 <li>There is <span style="color: #E50000">no guarantee of support</span>. If 596 your question remains unanswered after a week, repost it, making sure you 597 gave all the detail needed and the information requested.</li> 598 <li>Failing to provide information as requested or double checking first 599 for prior feedback also carries the implicit message "the time of the 600 library maintainers is less valuable than my time" and might not be 601 welcome.</li> 602 </ul> 603 604 <p>Of course, bugs reported with a suggested patch for fixing them will 605 probably be processed faster than those without.</p> 606 607 <p>If you're looking for help, a quick look at <a 608 href="http://mail.gnome.org/archives/xml/">the list archive</a> may actually 609 provide the answer. I usually send source samples when answering libxml2 610 usage questions. The <a 611 href="http://xmlsoft.org/html/book1.html">auto-generated documentation</a> is 612 not as polished as I would like (i need to learn more about DocBook), but 613 it's a good starting point.</p> 614 615 <h2><a name="help">How to help</a></h2> 616 617 <p>You can help the project in various ways, the best thing to do first is to 618 subscribe to the mailing-list as explained before, check the <a 619 href="http://mail.gnome.org/archives/xml/">archives </a>and the <a 620 href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Gnome bug 621 database</a>:</p> 622 <ol> 623 <li>Provide patches when you find problems.</li> 624 <li>Provide the diffs when you port libxml2 to a new platform. They may not 625 be integrated in all cases but help pinpointing portability problems 626 and</li> 627 <li>Provide documentation fixes (either as patches to the code comments or 628 as HTML diffs).</li> 629 <li>Provide new documentations pieces (translations, examples, etc 630 ...).</li> 631 <li>Check the TODO file and try to close one of the items.</li> 632 <li>Take one of the points raised in the archive or the bug database and 633 provide a fix. <a href="mailto:daniel@veillard.com">Get in touch with me 634 </a>before to avoid synchronization problems and check that the suggested 635 fix will fit in nicely :-)</li> 636 </ol> 637 638 <h2><a name="Downloads">Downloads</a></h2> 639 640 <p>The latest versions of libxml2 can be found on the <a 641 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> server ( <a 642 href="ftp://xmlsoft.org/libxml2/">FTP</a> and rsync are available), there are also 643 mirrors (<a href="ftp://fr.rpmfind.net/pub/libxml/">France</a> and 644 Antonin Sprinzl also provide <a href="ftp://gd.tuwien.ac.at/pub/libxml/">a 645 mirror in Austria</a>). (NOTE that you need both the <a 646 href="http://rpmfind.net/linux/RPM/libxml2.html">libxml(2)</a> and <a 647 href="http://rpmfind.net/linux/RPM/libxml2-devel.html">libxml(2)-devel</a> 648 packages installed to compile applications using libxml if using RPMs.)</p> 649 650 <p>You can find all the history of libxml(2) and libxslt releases in the <a 651 href="http://xmlsoft.org/sources/old/">old</a> directory. The precompiled 652 Windows binaries made by Igor Zlatovic are available in the <a 653 href="http://xmlsoft.org/sources/win32/">win32</a> directory.</p> 654 655 <p>Binary ports:</p> 656 <ul> 657 <li>RPMs for x86_64 are available directly on <a 658 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a>, the source RPM will compile on 659 any architecture supported.</li> 660 <li><a href="mailto:igor@zlatkovic.com">Igor Zlatkovic</a> is now the 661 maintainer of the Windows port, <a 662 href="http://www.zlatkovic.com/projects/libxml/index.html">he provides 663 binaries</a>.</li> 664 <li>OpenCSW provides <a 665 href="http://opencsw.org/packages/libxml2">Solaris 666 binaries</a>.</li> 667 <li><a href="mailto:Steve.Ball@explain.com.au">Steve Ball</a> provides <a 668 href="http://www.explain.com.au/oss/libxml2xslt.html">Mac Os X 669 binaries</a>.</li> 670 <li>The HP-UX porting center provides <a 671 href="http://hpux.connect.org.uk/hppd/hpux/Gnome/">HP-UX binaries</a></li> 672 <li>Bull provides precompiled <a 673 href="http://gnome.bullfreeware.com/new_index.html">RPMs for AIX</a> as 674 patr of their GNOME packages</li> 675 </ul> 676 677 <p>If you know other supported binary ports, please <a 678 href="http://veillard.com/">contact me</a>.</p> 679 680 <p><a name="Snapshot">Snapshot:</a></p> 681 <ul> 682 <li>Code from the GNOME GIT base libxml2 module, updated hourly <a 683 href="ftp://xmlsoft.org/libxml2/libxml2-git-snapshot.tar.gz">libxml2-git-snapshot.tar.gz</a>.</li> 684 <li>Docs, content of the web site, the list archive included <a 685 href="ftp://xmlsoft.org/libxml2/libxml-docs.tar.gz">libxml-docs.tar.gz</a>.</li> 686 </ul> 687 688 <p><a name="Contribs">Contributions:</a></p> 689 690 <p>I do accept external contributions, especially if compiling on another 691 platform, get in touch with the list to upload the package, wrappers for 692 various languages have been provided, and can be found in the <a 693 href="python.html">bindings section</a></p> 694 695 <p>Libxml2 is also available from GIT:</p> 696 <ul> 697 <li><p>See <a href="http://git.gnome.org/browse/libxml2/">libxml2 Git web</a>. 698 To checkout a local tree use:</p> 699 <pre>git clone git://git.gnome.org/libxml2</pre> 700 </li> 701 <li>The <strong>libxslt</strong> module is also present 702 <a href="http://git.gnome.org/browse/libxslt/">there</a>.</li> 703 </ul> 704 705 <h2><a name="News">Releases</a></h2> 706 707 <p>The <a href="ChangeLog.html">change log</a> describes the recents commits 708 to the <a href="http://git.gnome.org/browse/libxml2/">GIT</a> code base.</p> 709 710 <p>Here is the list of public releases:</p> 711 712 <h3>2.9.4: May 23 2016</h3> 713 <ul> 714 <li>Security:<br/> 715 More format string warnings with possible format string vulnerability (David Kilzer),<br/> 716 Avoid building recursive entities (Daniel Veillard),<br/> 717 Heap-based buffer overread in htmlCurrentChar (Pranjal Jumde),<br/> 718 Heap-based buffer-underreads due to xmlParseName (David Kilzer),<br/> 719 Heap use-after-free in xmlSAX2AttributeNs (Pranjal Jumde),<br/> 720 Heap use-after-free in htmlParsePubidLiteral and htmlParseSystemiteral (Pranjal Jumde),<br/> 721 Fix some format string warnings with possible format string vulnerability (David Kilzer),<br/> 722 Detect change of encoding when parsing HTML names (Hugh Davenport),<br/> 723 Fix inappropriate fetch of entities content (Daniel Veillard),<br/> 724 Bug 759398: Heap use-after-free in xmlDictComputeFastKey <https://bugzilla.gnome.org/show_bug.cgi?id=759398> (Pranjal Jumde),<br/> 725 Bug 758605: Heap-based buffer overread in xmlDictAddString <https://bugzilla.gnome.org/show_bug.cgi?id=758605> (Pranjal Jumde),<br/> 726 Bug 758588: Heap-based buffer overread in xmlParserPrintFileContextInternal <https://bugzilla.gnome.org/show_bug.cgi?id=758588> (David Kilzer),<br/> 727 Bug 757711: heap-buffer-overflow in xmlFAParsePosCharGroup <https://bugzilla.gnome.org/show_bug.cgi?id=757711> (Pranjal Jumde),<br/> 728 Add missing increments of recursion depth counter to XML parser. (Peter Simons)<br/> 729 </li> 730 731 <li>Documentation:<br/> 732 Fix typo: s{ ec -> cr }cipt (Jan Pokorný),<br/> 733 Fix typos: dictio{ nn -> n }ar{y,ies} (Jan Pokorný),<br/> 734 Fix typos: PATH_{ SEAPARATOR -> SEPARATOR } (Jan Pokorný),<br/> 735 Correct a typo. (Shlomi Fish)<br/> 736 </li> 737 738 <li>Portability:<br/> 739 Correct the usage of LDFLAGS (Mattias Hansson),<br/> 740 Revert the use of SAVE_LDFLAGS in configure.ac (Mattias Hansson),<br/> 741 libxml2 hardcodes -L/lib in zlib/lzma tests which breaks cross-compiles (Mike Frysinger),<br/> 742 Fix apibuild for a recently added construct (Daniel Veillard),<br/> 743 Use pkg-config to locate zlib when possible (Stewart Brodie),<br/> 744 Use pkg-config to locate ICU when possible (Stewart Brodie),<br/> 745 Portability to non C99 compliant compilers (Patrick Monnerat),<br/> 746 dict.h: Move xmlDictPtr definition before includes to allow direct inclusion. (Patrick Monnerat),<br/> 747 os400: tell about xmllint and xmlcatalog in README400. (Patrick Monnerat),<br/> 748 os400: properly process SGML add in XMLCATALOG command. (Patrick Monnerat),<br/> 749 os400: implement CL command XMLCATALOG. (Patrick Monnerat),<br/> 750 os400: compile and install program xmlcatalog (qshell-only). (Patrick Monnerat),<br/> 751 os400: expand tabs in sources, strip trailing blanks. (Patrick Monnerat),<br/> 752 os400: implement CL command XMLLINT. (Patrick Monnerat),<br/> 753 os400: compile and install program xmllint (qshell-only). (Patrick Monnerat),<br/> 754 os400: initscript make_module(): Use options instead of positional parameters. (Patrick Monnerat),<br/> 755 os400: c14n.rpgle: allow *omit for nullable reference parameters. (Patrick Monnerat),<br/> 756 os400: use like() for double type. (Patrick Monnerat),<br/> 757 os400: use like() for int type. (Patrick Monnerat),<br/> 758 os400: use like() for unsigned int type. (Patrick Monnerat),<br/> 759 os400: use like() for enum types. (Patrick Monnerat),<br/> 760 Add xz to xml2-config --libs output (Baruch Siach),<br/> 761 Bug 760190: configure.ac should be able to build --with-icu without icu-config tool <https://bugzilla.gnome.org/show_bug.cgi?id=760190> (David Kilzer),<br/> 762 win32\VC10\config.h and VS 2015 (Bruce Dawson),<br/> 763 Add configure maintainer mode (orzen)<br/> 764 </li> 765 766 <li>Bug Fixes:<br/> 767 Avoid an out of bound access when serializing malformed strings (Daniel Veillard),<br/> 768 Unsigned addition may overflow in xmlMallocAtomicLoc() (David Kilzer),<br/> 769 Integer signed/unsigned type mismatch in xmlParserInputGrow() (David Kilzer),<br/> 770 Bug 763071: heap-buffer-overflow in xmlStrncat <https://bugzilla.gnome.org/show_bug.cgi?id=763071> (Pranjal Jumde),<br/> 771 Integer overflow parsing port number in URI (Michael Paddon),<br/> 772 Fix an error with regexp on nullable counted char transition (Daniel Veillard),<br/> 773 Fix memory leak with XPath namespace nodes (Nick Wellnhofer),<br/> 774 Fix namespace axis traversal (Nick Wellnhofer),<br/> 775 Fix null pointer deref in docs with no root element (Hugh Davenport),<br/> 776 Fix XSD validation of URIs with ampersands (Alex Henrie),<br/> 777 xmlschemastypes.c: accept endOfDayFrag Times set to "24:00:00" mean "end of day" and should not cause an error. (Patrick Monnerat),<br/> 778 xmlcatalog: flush stdout before interactive shell input. (Patrick Monnerat),<br/> 779 xmllint: flush stdout before interactive shell input. (Patrick Monnerat),<br/> 780 Don't recurse into OP_VALUEs in xmlXPathOptimizeExpression (Nick Wellnhofer),<br/> 781 Fix namespace::node() XPath expression (Nick Wellnhofer),<br/> 782 Fix OOB write in xmlXPathEmptyNodeSet (Nick Wellnhofer),<br/> 783 Fix parsing of NCNames in XPath (Nick Wellnhofer),<br/> 784 Fix OOB read with invalid UTF-8 in xmlUTF8Strsize (Nick Wellnhofer),<br/> 785 Do normalize string-based datatype value in RelaxNG facet checking (Audric Schiltknecht),<br/> 786 Bug 760921: REGRESSION (8eb55d78): doc/examples/io1 test fails after fix for "xmlSaveUri() incorrectly recomposes URIs with rootless paths" <https://bugzilla.gnome.org/show_bug.cgi?id=760921> (David Kilzer),<br/> 787 Bug 760861: REGRESSION (bf9c1dad): Missing results for test/schemas/regexp-char-ref_[01].xsd <https://bugzilla.gnome.org/show_bug.cgi?id=760861> (David Kilzer),<br/> 788 error.c: *input->cur == 0 does not mean no error (Pavel Raiskup),<br/> 789 Add missing RNG test files (David Kilzer),<br/> 790 Bug 760183: REGRESSION (v2.9.3): XML push parser fails with bogus UTF-8 encoding error when multi-byte character in large CDATA section is split across buffer <https://bugzilla.gnome.org/show_bug.cgi?id=760183> (David Kilzer),<br/> 791 Bug 758572: ASAN crash in make check <https://bugzilla.gnome.org/show_bug.cgi?id=758572> (David Kilzer),<br/> 792 Bug 721158: Missing ICU string when doing --version on xmllint <https://bugzilla.gnome.org/show_bug.cgi?id=721158> (David Kilzer),<br/> 793 python 3: libxml2.c wrappers create Unicode str already (Michael Stahl),<br/> 794 Add autogen.sh to distrib (orzen),<br/> 795 Heap-based buffer overread in xmlNextChar (Daniel Veillard)<br/> 796 </li> 797 798 <li>Improvements:<br/> 799 Add more debugging info to runtest (Daniel Veillard),<br/> 800 Implement "runtest -u" mode (David Kilzer),<br/> 801 Add a make rule to rebuild for ASAN (Daniel Veillard)<br/> 802 </li> 803 </ul> 804 <h3>v2.9.3: Nov 20 2015</h3> 805 <ul> 806 <li>Security:<br/> 807 CVE-2015-8242 Buffer overead with HTML parser in push mode (Hugh Davenport),<br/> 808 CVE-2015-7500 Fix memory access error due to incorrect entities boundaries (Daniel Veillard),<br/> 809 CVE-2015-7499-2 Detect incoherency on GROW (Daniel Veillard),<br/> 810 CVE-2015-7499-1 Add xmlHaltParser() to stop the parser (Daniel Veillard),<br/> 811 CVE-2015-5312 Another entity expansion issue (David Drysdale),<br/> 812 CVE-2015-7497 Avoid an heap buffer overflow in xmlDictComputeFastQKey (David Drysdale),<br/> 813 CVE-2015-7498 Avoid processing entities after encoding conversion failures (Daniel Veillard),<br/> 814 CVE-2015-8035 Fix XZ compression support loop (Daniel Veillard),<br/> 815 CVE-2015-7942-2 Fix an error in previous Conditional section patch (Daniel Veillard),<br/> 816 CVE-2015-7942 Another variation of overflow in Conditional sections (Daniel Veillard),<br/> 817 CVE-2015-1819 Enforce the reader to run in constant memory (Daniel Veillard)<br/> 818 CVE-2015-7941_2 Cleanup conditional section error handling (Daniel Veillard),<br/> 819 CVE-2015-7941_1 Stop parsing on entities boundaries errors (Daniel Veillard),<br/> 820 </li> 821 822 <li>Documentation:<br/> 823 Correct spelling of "calling" (Alex Henrie),<br/> 824 Fix a small error in xmllint --format description (Fabien Degomme),<br/> 825 Avoid XSS on the search of xmlsoft.org (Daniel Veillard)<br/> 826 </li> 827 828 <li>Portability:<br/> 829 threads: use forward declarations only for glibc (Michael Heimpold),<br/> 830 Update Win32 configure.js to search for configure.ac (Daniel Veillard)<br/> 831 </li> 832 833 <li>Bug Fixes:<br/> 834 Bug on creating new stream from entity (Daniel Veillard),<br/> 835 Fix some loop issues embedding NEXT (Daniel Veillard),<br/> 836 Do not print error context when there is none (Daniel Veillard),<br/> 837 Avoid extra processing of MarkupDecl when EOF (Hugh Davenport),<br/> 838 Fix parsing short unclosed comment uninitialized access (Daniel Veillard),<br/> 839 Add missing Null check in xmlParseExternalEntityPrivate (Gaurav Gupta),<br/> 840 Fix a bug in CData error handling in the push parser (Daniel Veillard),<br/> 841 Fix a bug on name parsing at the end of current input buffer (Daniel Veillard),<br/> 842 Fix the spurious ID already defined error (Daniel Veillard),<br/> 843 Fix previous change to node sort order (Nick Wellnhofer),<br/> 844 Fix a self assignment issue raised by clang (Scott Graham),<br/> 845 Fail parsing early on if encoding conversion failed (Daniel Veillard),<br/> 846 Do not process encoding values if the declaration if broken (Daniel Veillard),<br/> 847 Silence clang's -Wunknown-attribute (Michael Catanzaro),<br/> 848 xmlMemUsed is not thread-safe (Martin von Gagern),<br/> 849 Fix support for except in nameclasses (Daniel Veillard),<br/> 850 Fix order of root nodes (Nick Wellnhofer),<br/> 851 Allow attributes on descendant-or-self axis (Nick Wellnhofer),<br/> 852 Fix the fix to Windows locking (Steve Nairn),<br/> 853 Fix timsort invariant loop re: Envisage article (Christopher Swenson),<br/> 854 Don't add IDs in xmlSetTreeDoc (Nick Wellnhofer),<br/> 855 Account for ID attributes in xmlSetTreeDoc (Nick Wellnhofer),<br/> 856 Remove various unused value assignments (Philip Withnall),<br/> 857 Fix missing entities after CVE-2014-3660 fix (Daniel Veillard),<br/> 858 Revert "Missing initialization for the catalog module" (Daniel Veillard)<br/> 859 </li> 860 861 <li>Improvements:<br/> 862 Reuse xmlHaltParser() where it makes sense (Daniel Veillard),<br/> 863 xmlStopParser reset errNo (Daniel Veillard),<br/> 864 Reenable xz support by default (Daniel Veillard),<br/> 865 Recover unescaped less-than character in HTML recovery parsing (Daniel Veillard),<br/> 866 Allow HTML serializer to output HTML5 DOCTYPE (Shaun McCance),<br/> 867 Regression test for bug #695699 (Nick Wellnhofer),<br/> 868 Add a couple of XPath tests (Nick Wellnhofer),<br/> 869 Add Python 3 rpm subpackage (Tomas Radej),<br/> 870 libxml2-config.cmake.in: update include directories (Samuel Martin),<br/> 871 Adding example from bugs 738805 to regression tests (Daniel Veillard)<br/> 872 </li> 873 874 <li>Cleanups:<br/> 875 </li> 876 </ul> 877 <h3>2.9.2: Oct 16 2014</h3> 878 <ul> 879 <li>Security:<br/> 880 Fix for CVE-2014-3660 billion laugh variant (Daniel Veillard),<br/> 881 CVE-2014-0191 Do not fetch external parameter entities (Daniel Veillard)<br/> 882 </li> 883 884 <li>Bug Fixes:<br/> 885 fix memory leak xml header encoding field with XML_PARSE_IGNORE_ENC (Bart De Schuymer),<br/> 886 xmlmemory: handle realloc properly (Yegor Yefremov),<br/> 887 Python generator bug raised by the const change (Daniel Veillard),<br/> 888 Windows Critical sections not released correctly (Daniel Veillard),<br/> 889 Parser error on repeated recursive entity expansion containing &lt; (Daniel Veillard),<br/> 890 xpointer : fixing Null Pointers (Gaurav Gupta),<br/> 891 Remove Unnecessary Null check in xpointer.c (Gaurav Gupta),<br/> 892 parser bug on misformed namespace attributes (Dennis Filder),<br/> 893 Pointer dereferenced before null check (Daniel Veillard),<br/> 894 Leak of struct addrinfo in xmlNanoFTPConnect() (Gaurav Gupta),<br/> 895 Possible overflow in HTMLParser.c (Daniel Veillard),<br/> 896 python/tests/sync.py assumes Python dictionaries are ordered (John Beck),<br/> 897 Fix Enum check and missing break (Gaurav Gupta),<br/> 898 xmlIO: Handle error returns from dup() (Philip Withnall),<br/> 899 Fix a problem properly saving URIs (Daniel Veillard),<br/> 900 wrong error column in structured error when parsing attribute values (Juergen Keil),<br/> 901 wrong error column in structured error when skipping whitespace in xml decl (Juergen Keil),<br/> 902 no error column in structured error handler for xml schema validation errors (Juergen Keil),<br/> 903 Couple of Missing Null checks (Gaurav Gupta),<br/> 904 Add couple of missing Null checks (Daniel Veillard),<br/> 905 xmlschemastypes: Fix potential array overflow (Philip Withnall),<br/> 906 runtest: Fix a memory leak on parse failure (Philip Withnall),<br/> 907 xmlIO: Fix an FD leak on gzdopen() failure (Philip Withnall),<br/> 908 xmlcatalog: Fix a memory leak on quit (Philip Withnall),<br/> 909 HTMLparser: Correctly initialise a stack allocated structure (Philip Withnall),<br/> 910 Check for tmon in _xmlSchemaDateAdd() is incorrect (David Kilzer),<br/> 911 Avoid Possible Null Pointer in trio.c (Gaurav Gupta),<br/> 912 Fix processing in SAX2 in case of an allocation failure (Daniel Veillard),<br/> 913 XML Shell command "cd" does not handle "/" at end of path (Daniel Veillard),<br/> 914 Fix various Missing Null checks (Gaurav Gupta),<br/> 915 Fix a potential NULL dereference (Daniel Veillard),<br/> 916 Add a couple of misisng check in xmlRelaxNGCleanupTree (Gaurav Gupta),<br/> 917 Add a missing argument check (Gaurav Gupta),<br/> 918 Adding a check in case of allocation error (Gaurav Gupta),<br/> 919 xmlSaveUri() incorrectly recomposes URIs with rootless paths (Dennis Filder),<br/> 920 Adding some missing NULL checks (Gaurav),<br/> 921 Fixes for xmlInitParserCtxt (Daniel Veillard),<br/> 922 Fix regressions introduced by CVE-2014-0191 patch (Daniel Veillard),<br/> 923 erroneously ignores a validation error if no error callback set (Daniel Veillard),<br/> 924 xmllint was not parsing the --c14n11 flag (Sérgio Batista),<br/> 925 Avoid Possible null pointer dereference in memory debug mode (Gaurav),<br/> 926 Avoid Double Null Check (Gaurav),<br/> 927 Restore context size and position after XPATH_OP_ARG (Nick Wellnhofer),<br/> 928 Fix xmlParseInNodeContext() if node is not element (Daniel Veillard),<br/> 929 Avoid a possible NULL pointer dereference (Gaurav),<br/> 930 Fix xmlTextWriterWriteElement when a null content is given (Daniel Veillard),<br/> 931 Fix an typo 'onrest' in htmlScriptAttributes (Daniel Veillard),<br/> 932 fixing a ptotential uninitialized access (Daniel Veillard),<br/> 933 Fix an fd leak in an error case (Daniel Veillard),<br/> 934 Missing initialization for the catalog module (Daniel Veillard),<br/> 935 Handling of XPath function arguments in error case (Nick Wellnhofer),<br/> 936 Fix a couple of missing NULL checks (Gaurav),<br/> 937 Avoid a possibility of dangling encoding handler (Gaurav),<br/> 938 Fix HTML push parser to accept HTML_PARSE_NODEFDTD (Arnold Hendriks),<br/> 939 Fix a bug loading some compressed files (Mike Alexander),<br/> 940 Fix XPath node comparison bug (Gaurav),<br/> 941 Type mismatch in xmlschemas.c (Gaurav),<br/> 942 Type mismatch in xmlschemastypes.c (Gaurav),<br/> 943 Avoid a deadcode in catalog.c (Daniel Veillard),<br/> 944 run close socket on Solaris, same as we do on other platforms (Denis Pauk),<br/> 945 Fix pointer dereferenced before null check (Gaurav),<br/> 946 Fix a potential NULL dereference in tree code (Daniel Veillard),<br/> 947 Fix potential NULL pointer dereferences in regexp code (Gaurav),<br/> 948 xmllint --pretty crashed without following numeric argument (Tim Galeckas),<br/> 949 Fix XPath expressions of the form '@ns:*' (Nick Wellnhofer),<br/> 950 Fix XPath '//' optimization with predicates (Nick Wellnhofer),<br/> 951 Clear up a potential NULL dereference (Daniel Veillard),<br/> 952 Fix a possible NULL dereference (Gaurav),<br/> 953 Avoid crash if allocation fails (Daniel Veillard),<br/> 954 Remove occasional leading space in XPath number formatting (Daniel Veillard),<br/> 955 Fix handling of mmap errors (Daniel Veillard),<br/> 956 Catch malloc error and exit accordingly (Daniel Veillard),<br/> 957 missing else in xlink.c (Ami Fischman),<br/> 958 Fix a parsing bug on non-ascii element and CR/LF usage (Daniel Veillard),<br/> 959 Fix a regression in xmlGetDocCompressMode() (Daniel Veillard),<br/> 960 properly quote the namespace uris written out during c14n (Aleksey Sanin),<br/> 961 Remove premature XInclude check on URI being relative (Alexey Neyman),<br/> 962 Fix missing break on last() function for attributes (dcb),<br/> 963 Do not URI escape in server side includes (Romain Bondue),<br/> 964 Fix an error in xmlCleanupParser (Alexander Pastukhov)<br/> 965 </li> 966 967 <li>Documentation:<br/> 968 typo in error messages "colon are forbidden from..." (Daniel Veillard),<br/> 969 Fix a link to James SAX documentation old page (Daniel Veillard),<br/> 970 Fix typos in relaxng.c (Jan Pokorný),<br/> 971 Fix a doc typo (Daniel Veillard),<br/> 972 Fix typos in {tree,xpath}.c (errror) (Jan Pokorný),<br/> 973 Add limitations about encoding conversion (Daniel Veillard),<br/> 974 Fix typos in xmlschemas{,types}.c (Jan Pokorný),<br/> 975 Fix incorrect spelling entites->entities (Jan Pokorný),<br/> 976 Forgot to document 2.9.1 release, regenerate docs (Daniel Veillard)<br/> 977 </li> 978 979 <li>Portability:<br/> 980 AC_CONFIG_FILES and executable bit (Roumen Petrov),<br/> 981 remove HAVE_CONFIG_H dependency in testlimits.c (Roumen Petrov),<br/> 982 fix some tabs mixing incompatible with python3 (Roumen Petrov),<br/> 983 Visual Studio 14 CTP defines snprintf() (Francis Dupont),<br/> 984 OS400: do not try to copy unexisting doc files (Patrick Monnerat),<br/> 985 OS400: use either configure.ac or configure.in. (Patrick Monnerat),<br/> 986 os400: make-src.sh: create physical file with target CCSID (Patrick Monnerat),<br/> 987 OS400: Add some more C macros equivalent procedures. (Patrick Monnerat),<br/> 988 OS400: use C macros to implement equivalent RPG support procedures. (Patrick Monnerat),<br/> 989 OS400: implement XPath macros as procedures for ILE/RPG support. (Patrick Monnerat),<br/> 990 OS400: include in distribution tarball. (Patrick Monnerat),<br/> 991 OS400: Add README: compilation directives and OS/400 specific stuff. (Patrick Monnerat),<br/> 992 OS400: Add compilation scripts. (Patrick Monnerat),<br/> 993 OS400: ILE RPG language header files. (Patrick Monnerat),<br/> 994 OS400: implement some macros as functions for ILE/RPG language support (that as no macros). (Patrick Monnerat),<br/> 995 OS400: UTF8<-->EBCDIC wrappers for system and external library calls (Patrick Monnerat),<br/> 996 OS400: Easy character transcoding support (Patrick Monnerat),<br/> 997 OS400: iconv functions compatibility wrappers and table builder. (Patrick Monnerat),<br/> 998 OS400: create architecture directory. Implement dlfcn emulation. (Patrick Monnerat),<br/> 999 Fix building when configuring without xpath and xptr (Daniel Veillard),<br/> 1000 configure: Add --with-python-install-dir (Jonas Eriksson),<br/> 1001 Fix compilation with minimum and xinclude. (Nicolas Le Cam),<br/> 1002 Compile out use of xmlValidateNCName() when not available. (Nicolas Le Cam),<br/> 1003 Fix compilation with minimum and schematron. (Nicolas Le Cam),<br/> 1004 Legacy needs xmlSAX2StartElement() and xmlSAX2EndElement(). (Nicolas Le Cam),<br/> 1005 Don't use xmlValidateName() when not available. (Nicolas Le Cam),<br/> 1006 Fix a portability issue on Windows (Longstreth Jon),<br/> 1007 Various portability patches for OpenVMS (Jacob (Jouk) Jansen),<br/> 1008 Use specific macros for portability to OS/400 (Patrick Monnerat),<br/> 1009 Add macros needed for OS/400 portability (Patrick Monnerat),<br/> 1010 Portability patch for fopen on OS/400 (Patrick Monnerat),<br/> 1011 Portability fixes for OS/400 (Patrick Monnerat),<br/> 1012 Improve va_list portability (Patrick Monnerat),<br/> 1013 Portability fix (Patrick Monnerat),<br/> 1014 Portability fix (Patrick Monnerat),<br/> 1015 Generic portability fix (Patrick Monnerat),<br/> 1016 Shortening lines in headers (Patrick Monnerat),<br/> 1017 build: Use pkg-config to find liblzma in preference to AC_CHECK_LIB (Philip Withnall),<br/> 1018 build: Add @LZMA_LIBS@ to libxml’s pkg-config files (Philip Withnall),<br/> 1019 fix some tabs mixing incompatible with python3 (Daniel Veillard),<br/> 1020 add additional defines checks for support "./configure --with-minimum" (Denis Pauk),<br/> 1021 Another round of fixes for older versions of Python (Arfrever Frehtes Taifersar Arahesis),<br/> 1022 python: fix drv_libxml2.py for python3 compatibility (Alexandre Rostovtsev),<br/> 1023 python: Fix compiler warnings when building python3 bindings (Armin K),<br/> 1024 Fix for compilation with python 2.6.8 (Petr Sumbera)<br/> 1025 </li> 1026 1027 <li>Improvements:<br/> 1028 win32/libxml2.def.src after rebuild in doc (Roumen Petrov),<br/> 1029 elfgcchack.h: more legacy needs xmlSAX2StartElement() and xmlSAX2EndElement() (Roumen Petrov),<br/> 1030 elfgcchack.h: add xmlXPathNodeEval and xmlXPathSetContextNode (Roumen Petrov),<br/> 1031 Provide cmake module (Samuel Martin),<br/> 1032 Fix a couple of issues raised by make dist (Daniel Veillard),<br/> 1033 Fix and add const qualifiers (Kurt Roeckx),<br/> 1034 Preparing for upcoming release of 2.9.2 (Daniel Veillard),<br/> 1035 Fix zlib and lzma libraries check via command line (Dmitriy),<br/> 1036 wrong error column in structured error when parsing end tag (Juergen Keil),<br/> 1037 doc/news.html: small update to avoid line join while generating NEWS. (Patrick Monnerat),<br/> 1038 Add methods for python3 iterator (Ron Angeles),<br/> 1039 Support element node traversal in document fragments. (Kyle VanderBeek),<br/> 1040 xmlNodeSetName: Allow setting the name to a substring of the currently set name (Tristan Van Berkom),<br/> 1041 Added macros for argument casts (Eric Zurcher),<br/> 1042 adding init calls to xml and html Read parsing entry points (Daniel Veillard),<br/> 1043 Get rid of 'REPLACEMENT CHARACTER' Unicode chars in xmlschemas.c (Jan Pokorný),<br/> 1044 Implement choice for name classes on attributes (Shaun McCance),<br/> 1045 Two small namespace tweaks (Daniel Veillard),<br/> 1046 xmllint --memory should fail on empty files (Daniel Veillard),<br/> 1047 Cast encoding name to char pointer to match arg type (Nikolay Sivov)<br/> 1048 </li> 1049 1050 <li>Cleanups:<br/> 1051 Removal of old configure.in (Daniel Veillard),<br/> 1052 Unreachable code in tree.c (Gaurav Gupta),<br/> 1053 Remove a couple of dead conditions (Gaurav Gupta),<br/> 1054 Avoid some dead code and cleanup in relaxng.c (Gaurav),<br/> 1055 Drop not needed checks (Denis Pauk),<br/> 1056 Fix a wrong test (Daniel Veillard)<br/> 1057 </li> 1058 </ul> 1059 <h3>2.9.1: Apr 19 2013</h3> 1060 <ul> 1061 <li> Features:<br/> 1062 Support for Python3 (Daniel Veillard),<br/> 1063 Add xmlXPathSetContextNode and xmlXPathNodeEval (Alex Bligh)<br/> 1064 </li> 1065 1066 <li> Documentation:<br/> 1067 Add documentation for xmllint --xpath (Daniel Veillard),<br/> 1068 Fix the URL of the SAX documentation from James (Daniel Veillard),<br/> 1069 Fix spelling of "length". (Michael Wood)<br/> 1070 </li> 1071 1072 <li> Portability:<br/> 1073 Fix python bindings with versions older than 2.7 (Daniel Veillard),<br/> 1074 rebuild docs:Makefile.am (Roumen Petrov),<br/> 1075 elfgcchack.h after rebuild in doc (Roumen Petrov),<br/> 1076 elfgcchack for buf module (Roumen Petrov),<br/> 1077 Fix a uneeded and wrong extra link parameter (Daniel Veillard),<br/> 1078 Few cleanup patches for Windows (Denis Pauk),<br/> 1079 Fix rpmbuild --nocheck (Mark Salter),<br/> 1080 Fix for win32/configure.js and WITH_THREAD_ALLOC (Daniel Richard),<br/> 1081 Fix Broken multi-arch support in xml2-config (Daniel Veillard),<br/> 1082 Fix a portability issue for GCC < 3.4.0 (Daniel Veillard),<br/> 1083 Windows build fixes (Daniel Richard),<br/> 1084 Fix a thread portability problem (Friedrich Haubensak),<br/> 1085 Downgrade autoconf requirement to 2.63 (Daniel Veillard)<br/> 1086 </li> 1087 1088 <li> Bug Fixes:<br/> 1089 Fix a linking error for python bindings (Daniel Veillard),<br/> 1090 Fix a couple of return without value (Jüri Aedla),<br/> 1091 Improve the hashing functions (Daniel Franke),<br/> 1092 Improve handling of xmlStopParser() (Daniel Veillard),<br/> 1093 Remove risk of lockup in dictionary initialization (Daniel Veillard),<br/> 1094 Activate detection of encoding in external subset (Daniel Veillard),<br/> 1095 Fix an output buffer flushing conversion bug (Mikhail Titov),<br/> 1096 Fix an old bug in xmlSchemaValidateOneElement (Csaba László),<br/> 1097 Fix configure cannot remove messages (Gilles Espinasse),<br/> 1098 fix schema validation in combination with xsi:nil (Daniel Veillard),<br/> 1099 xmlCtxtReadFile doesn't work with literal IPv6 URLs (Steve Wolf),<br/> 1100 Fix a few problems with setEntityLoader (Alexey Neyman),<br/> 1101 Detect excessive entities expansion upon replacement (Daniel Veillard),<br/> 1102 Fix the flushing out of raw buffers on encoding conversions (Daniel,<br/> 1103 Veillard),<br/> 1104 Fix some buffer conversion issues (Daniel Veillard),<br/> 1105 When calling xmlNodeDump make sure we grow the buffer quickly (Daniel,<br/> 1106 Veillard),<br/> 1107 Fix an error in the progressive DTD parsing code (Dan Winship),<br/> 1108 xmllint should not load DTD by default when using the reader (Daniel,<br/> 1109 Veillard),<br/> 1110 Try IBM-037 when looking for EBCDIC handlers (Petr Sumbera),<br/> 1111 Fix potential out of bound access (Daniel Veillard),<br/> 1112 Fix large parse of file from memory (Daniel Veillard),<br/> 1113 Fix a bug in the nsclean option of the parser (Daniel Veillard),<br/> 1114 Fix a regression in 2.9.0 breaking validation while streaming (Daniel,<br/> 1115 Veillard),<br/> 1116 Remove potential calls to exit() (Daniel Veillard)<br/> 1117 </li> 1118 1119 <li> Improvements:<br/> 1120 Regenerated API, and testapi, rebuild documentation (Daniel Veillard),<br/> 1121 Fix tree iterators broken by 2to3 script (Daniel Veillard),<br/> 1122 update all tests for Python3 and Python2 (Daniel Veillard),<br/> 1123 A few more fixes for python 3 affecting libxml2.py (Daniel Veillard),<br/> 1124 Fix compilation on Python3 (Daniel Veillard),<br/> 1125 Converting apibuild.py to python3 (Daniel Veillard),<br/> 1126 First pass at starting porting to python3 (Daniel Veillard),<br/> 1127 updated configure.in for python3 (Daniel Veillard),<br/> 1128 Add support for xpathRegisterVariable in Python (Shaun McCance),<br/> 1129 Added a regression tests from bug 694228 data (Daniel Veillard),<br/> 1130 Cache presence of '<' in entities content (Daniel Veillard),<br/> 1131 Avoid extra processing on entities (Daniel Veillard),<br/> 1132 Python binding for xmlRegisterInputCallback (Alexey Neyman),<br/> 1133 Python bindings: DOM casts everything to xmlNode (Alexey Neyman),<br/> 1134 Define LIBXML_THREAD_ALLOC_ENABLED via xmlversion.h (Tim Starling),<br/> 1135 Adding streaming validation to runtest checks (Daniel Veillard),<br/> 1136 Add a --pushsmall option to xmllint (Daniel Veillard)<br/> 1137 </li> 1138 1139 <li> Cleanups:<br/> 1140 Switched comment in file to UTF-8 encoding (Daniel Veillard),<br/> 1141 Extend gitignore (Daniel Veillard),<br/> 1142 Silent the new python test on input (Alexey Neyman),<br/> 1143 Cleanup of a duplicate test (Daniel Veillard),<br/> 1144 Cleanup on duplicate test expressions (Daniel Veillard),<br/> 1145 Fix compiler warning after 153cf15905cf4ec080612ada6703757d10caba1e (Patrick,<br/> 1146 Gansterer),<br/> 1147 Spec cleanups and a fix for multiarch support (Daniel Veillard),<br/> 1148 Silence a clang warning (Daniel Veillard),<br/> 1149 Cleanup the Copyright to be pure MIT Licence wording (Daniel Veillard),<br/> 1150 rand_seed should be static in dict.c (Wouter Van Rooy),<br/> 1151 Fix typos in parser comments (Jan Pokorný)<br/> 1152 </li> 1153 </ul> 1154 <h3>2.9.0: Sep 11 2012</h3> 1155 <ul> 1156 <li> Features:<br/> 1157 A few new API entry points,<br/> 1158 More resilient push parser mode,<br/> 1159 A lot of portability improvement,<br/> 1160 Faster XPath evaluation<br/> 1161 </li> 1162 1163 <li> Documentation:<br/> 1164 xml2-config.1 markup error (Christian Weisgerber),<br/> 1165 libxml(3) manpage typo fix (John Bradshaw),<br/> 1166 More cleanups to the documentation part of libxml2 (Daniel Richard G)<br/> 1167 </li> 1168 1169 <li> Portability:<br/> 1170 Bug 676544 - fails to build with --without-sax1 (Akira TAGOH),<br/> 1171 fix builds not having stdint.h (Rob Richards),<br/> 1172 GetProcAddressA is available only on WinCE (Daniel Veillard),<br/> 1173 More updates and cleanups on autotools and Makefiles (Daniel Richard G),<br/> 1174 More changes for Win32 compilation (Eric Zurcher),<br/> 1175 Basic changes for Win32 builds of release 2.9.0: compile buf.c (Eric Zurcher),<br/> 1176 Bundles all generated files for python into the distribution (Daniel Richard G),<br/> 1177 Fix compiler warnings of wincecompat.c (Patrick Gansterer),<br/> 1178 Fix non __GNUC__ build (Patrick Gansterer),<br/> 1179 Fix windows unicode build (Patrick Gansterer),<br/> 1180 clean redefinition of {v}snprintf in C-source (Roumen Petrov),<br/> 1181 use xmlBuf... if DEBUG_INPUT is defined (Roumen Petrov),<br/> 1182 fix runtests to use pthreads support for various Unix platforms (Daniel Richard G),<br/> 1183 Various "make distcheck" and portability fixups 2nd part (Daniel Richard G),<br/> 1184 Various "make distcheck" and portability fixups (Daniel Richard G),<br/> 1185 Fix compilation on older Visual Studio (Daniel Veillard)<br/> 1186 </li> 1187 1188 <li> Bug Fixes:<br/> 1189 Change the XPath code to percolate allocation errors (Daniel Veillard),<br/> 1190 Fix reuse of xmlInitParser (Daniel Veillard),<br/> 1191 Fix potential crash on entities errors (Daniel Veillard),<br/> 1192 initialize var (Rob Richards),<br/> 1193 Fix the XPath arity check to also check the XPath stack limits (Daniel Veillard),<br/> 1194 Fix problem with specific and generic error handlers (Pietro Cerutti),<br/> 1195 Avoid a potential infinite recursion (Daniel Veillard),<br/> 1196 Fix an XSD error when generating internal automata (Daniel Veillard),<br/> 1197 Patch for xinclude of text using multibyte characters (Vitaly Ostanin),<br/> 1198 Fix a segfault on XSD validation on pattern error (Daniel Veillard),<br/> 1199 Fix missing xmlsave.h module which was ignored in recent builds (Daniel Veillard),<br/> 1200 Add a missing element check (Daniel Veillard),<br/> 1201 Adding various checks on node type though the API (Daniel Veillard),<br/> 1202 Namespace nodes can't be unlinked with xmlUnlinkNode (Daniel Veillard),<br/> 1203 Fix make dist to include new private header files (Daniel Veillard),<br/> 1204 More fixups on the push parser behaviour (Daniel Veillard),<br/> 1205 Strengthen behaviour of the push parser in problematic situations (Daniel Veillard),<br/> 1206 Enforce XML_PARSER_EOF state handling through the parser (Daniel Veillard),<br/> 1207 Fixup limits parser (Daniel Veillard),<br/> 1208 Do not fetch external parsed entities (Daniel Veillard),<br/> 1209 Fix an error in previous commit (Aron Xu),<br/> 1210 Fix entities local buffers size problems (Daniel Veillard),<br/> 1211 Fix parser local buffers size problems (Daniel Veillard),<br/> 1212 Fix a failure to report xmlreader parsing failures (Daniel Veillard)<br/> 1213 </li> 1214 1215 <li> Improvements:<br/> 1216 Keep libxml2.syms when running "make distclean" (Daniel Veillard),<br/> 1217 Allow to set the quoting character of an xmlWriter (Csaba Raduly),<br/> 1218 Keep non-significant blanks node in HTML parser (Daniel Veillard),<br/> 1219 Add a forbidden variable error number and message to XPath (Daniel Veillard),<br/> 1220 Support long path names on WNT (Michael Stahl),<br/> 1221 Improve HTML escaping of attribute on output (Daniel Veillard),<br/> 1222 Handle ICU_LIBS as LIBADD, not LDFLAGS to prevent linking errors (Arfrever Frehtes Taifersar Arahesis),<br/> 1223 Switching XPath node sorting to Timsort (Vojtech Fried),<br/> 1224 Optimizing '//' in XPath expressions (Nick Wellnhofer),<br/> 1225 Expose xmlBufShrink in the public tree API (Daniel Veillard),<br/> 1226 Visible HTML elements close the head tag (Conrad Irwin),<br/> 1227 Fix file and line report for XSD SAX and reader streaming validation (Daniel Veillard),<br/> 1228 Fix const qualifyer to definition of xmlBufferDetach (Daniel Veillard),<br/> 1229 minimize use of HAVE_CONFIG_H (Roumen Petrov),<br/> 1230 fixup regression in Various "make distcheck" and portability fixups (Roumen Petrov),<br/> 1231 Add support for big line numbers in error reporting (Daniel Veillard),<br/> 1232 Avoid using xmlBuffer for serialization (Daniel Veillard),<br/> 1233 Improve compatibility between xmlBuf and xmlBuffer (Daniel Veillard),<br/> 1234 Provide new accessors for xmlOutputBuffer (Daniel Veillard),<br/> 1235 Improvements for old buffer compatibility (Daniel Veillard),<br/> 1236 Expand the limit test program (Daniel Veillard),<br/> 1237 Improve error reporting on parser errors (Daniel Veillard),<br/> 1238 Implement some default limits in the XPath module (Daniel Veillard),<br/> 1239 Introduce some default parser limits (Daniel Veillard),<br/> 1240 Cleanups and new limit APIs for dictionaries (Daniel Veillard),<br/> 1241 Fixup for buf.c (Daniel Veillard),<br/> 1242 Cleanup URI module memory allocation code (Daniel Veillard),<br/> 1243 Extend testlimits (Daniel Veillard),<br/> 1244 More avoid quadratic behaviour (Daniel Veillard),<br/> 1245 Impose a reasonable limit on PI size (Daniel Veillard),<br/> 1246 first version of testlimits new test (Daniel Veillard),<br/> 1247 Avoid quadratic behaviour in some push parsing cases (Daniel Veillard),<br/> 1248 Impose a reasonable limit on comment size (Daniel Veillard),<br/> 1249 Impose a reasonable limit on attribute size (Daniel Veillard),<br/> 1250 Harden the buffer code and make it more compatible (Daniel Veillard),<br/> 1251 More cleanups for input/buffers code (Daniel Veillard),<br/> 1252 Cleanup function xmlBufResetInput(),<br/> to set input from Buffer (Daniel Veillard) 1253 Swicth the test program for characters to new input buffers (Daniel Veillard),<br/> 1254 Convert the HTML tree module to the new buffers (Daniel Veillard),<br/> 1255 Convert of the HTML parser to new input buffers (Daniel Veillard),<br/> 1256 Convert the writer to new output buffer and save APIs (Daniel Veillard),<br/> 1257 Convert XMLReader to the new input buffers (Daniel Veillard),<br/> 1258 New saving functions using xmlBuf and conversion (Daniel Veillard),<br/> 1259 Provide new xmlBuf based saving functions (Daniel Veillard),<br/> 1260 Convert XInclude to the new input buffers (Daniel Veillard),<br/> 1261 Convert catalog code to the new input buffers (Daniel Veillard),<br/> 1262 Convert C14N to the new Input buffer (Daniel Veillard),<br/> 1263 Convert xmlIO.c to the new input and output buffers (Daniel Veillard),<br/> 1264 Convert XML parser to the new input buffers (Daniel Veillard),<br/> 1265 Incompatible change to the Input and Output buffers (Daniel Veillard),<br/> 1266 Adding new encoding function to deal with the new structures (Daniel Veillard),<br/> 1267 Convert XPath to xmlBuf (Daniel Veillard),<br/> 1268 Adding a new buf module for buffers (Daniel Veillard),<br/> 1269 Memory error within SAX2 reuse common framework (Daniel Veillard),<br/> 1270 Fix xmllint --xpath node initialization (Daniel Veillard)<br/> 1271 </li> 1272 1273 <li> Cleanups:<br/> 1274 Various cleanups to avoid compiler warnings (Daniel Veillard),<br/> 1275 Big space and tab cleanup (Daniel Veillard),<br/> 1276 Followup to LibXML2 docs/examples cleanup patch (Daniel Veillard),<br/> 1277 Second round of cleanups for LibXML2 docs/examples (Daniel Richard),<br/> 1278 Remove all .cvsignore as they are not used anymore (Daniel Veillard),<br/> 1279 Fix a Timsort function helper comment (Daniel Veillard),<br/> 1280 Small cleanup for valgrind target (Daniel Veillard),<br/> 1281 Patch for portability of latin characters in C files (Daniel Veillard),<br/> 1282 Cleanup some of the parser code (Daniel Veillard),<br/> 1283 Fix a variable name in comment (Daniel Veillard),<br/> 1284 Regenerated testapi.c (Daniel Veillard),<br/> 1285 Regenerating docs and API files (Daniel Veillard),<br/> 1286 Small cleanup of unused variables in test (Daniel Veillard),<br/> 1287 Expand .gitignore with more files (Daniel Veillard)<br/> 1288 </li> 1289 </ul> 1290 <h3>2.8.0: May 23 2012</h3> 1291 <ul> 1292 <li>Features: 1293 add lzma compression support (Anders F Bjorklund) 1294 </li> 1295 1296 <li>Documentation: 1297 xmlcatalog: Add uri and delegateURI to possible add types in man page. (Ville Skyttä), 1298 Update README.tests (Daniel Veillard), 1299 URI handling code is not OOM resilient (Daniel Veillard), 1300 Fix an error in comment (Daniel Veillard), 1301 Fixed bug #617016 (Daniel Mustieles), 1302 Fixed two typos in the README document (Daniel Neel), 1303 add generated html files (Anders F Bjorklund), 1304 Clarify the need to use xmlFreeNode after xmlUnlinkNode (Daniel Veillard), 1305 Improve documentation a bit (Daniel Veillard), 1306 Updated URL for lxml python bindings (Daniel Veillard) 1307 </li> 1308 1309 <li>Portability: 1310 Restore code for Windows compilation (Daniel Veillard), 1311 Remove git error message during configure (Christian Dywan), 1312 xmllint: Build fix for endTimer if !defined(HAVE_GETTIMEOFDAY) (Patrick R. Gansterer), 1313 remove a bashism in confgure.in (John Hein), 1314 undef ERROR if already defined (Patrick R. Gansterer), 1315 Fix library problems with mingw-w64 (Michael Cronenworth), 1316 fix windows build. ifdef addition from bug 666491 makes no sense (Rob Richards), 1317 prefer native threads on win32 (Sam Thursfield), 1318 Allow to compile with Visual Studio 2010 (Thomas Lemm), 1319 Fix mingw's snprintf configure check (Andoni Morales), 1320 fixed a 64bit big endian issue (Marcus Meissner), 1321 Fix portability failure if netdb.h lacks NO_ADDRESS (Daniel Veillard), 1322 Fix windows build from lzma addition (Rob Richards), 1323 autogen: Only check for libtoolize (Colin Walters), 1324 Fix the Windows build files (Patrick von Reth), 1325 634846 Remove a linking option breaking Windows VC10 (Daniel Veillard), 1326 599241 fix an initialization problem on Win64 (Andrew W. Nosenko), 1327 fix win build (Rob Richards) 1328 </li> 1329 1330 <li>Bug fixes: 1331 Part for rand_r checking missing (Daniel Veillard), 1332 Cleanup on randomization (Daniel Veillard), 1333 Fix undefined reference in python module (Pacho Ramos), 1334 Fix a race in xmlNewInputStream (Daniel Veillard), 1335 Fix weird streaming RelaxNG errors (Noam), 1336 Fix various bugs in new code raised by the API checking (Daniel Veillard), 1337 Fix various problems with "make dist" (Daniel Veillard), 1338 Fix a memory leak in the xzlib code (Daniel Veillard), 1339 HTML parser error with <noscript> in the <head> (Denis Pauk), 1340 XSD: optional element in complex type extension (Remi Gacogne), 1341 Fix html serialization error and htmlSetMetaEncoding() (Daniel Veillard), 1342 Fix a wrong return value in previous patch (Daniel Veillard), 1343 Fix an uninitialized variable use (Daniel Veillard), 1344 Fix a compilation problem with --minimum (Brandon Slack), 1345 Remove redundant and ungarded include of resolv.h (Daniel Veillard), 1346 xinclude with parse="text" does not use the entity loader (Shaun McCance), 1347 Allow to parse 1 byte HTML files (Denis Pauk), 1348 Patch that fixes the skipping of the HTML_PARSE_NOIMPLIED flag (Martin Schröder), 1349 Avoid memory leak if xmlParserInputBufferCreateIO fails (Lin Yi-Li), 1350 Prevent an infinite loop when dumping a node with encoding problems (Timothy Elliott), 1351 xmlParseNodeInContext problems with an empty document (Tim Elliott), 1352 HTML element position is not detected propperly (Pavel Andrejs), 1353 Fix an off by one pointer access (Jüri Aedla), 1354 Try to fix a problem with entities in SAX mode (Daniel Veillard), 1355 Fix a crash with xmllint --path on empty results (Daniel Veillard), 1356 Fixed bug #667946 (Daniel Mustieles), 1357 Fix a logic error in Schemas Component Constraints (Ryan Sleevi), 1358 Fix a wrong enum type use in Schemas Types (Nico Weber), 1359 Fix SAX2 builder in case of undefined attributes namespace (Daniel Veillard), 1360 Fix SAX2 builder in case of undefined element namespaces (Daniel Veillard), 1361 fix reference to STDOUT_FILENO on MSVC (Tay Ray Chuan), 1362 fix a pair of possible out of array char references (Daniel Veillard), 1363 Fix an allocation error when copying entities (Daniel Veillard), 1364 Make sure the parser returns when getting a Stop order (Chris Evans), 1365 Fix some potential problems on reallocation failures(parser.c) (Xia Xinfeng), 1366 Fix a schema type duration comparison overflow (Daniel Veillard), 1367 Fix an unimplemented part in RNG value validation (Daniel Veillard), 1368 Fix missing error status in XPath evaluation (Daniel Veillard), 1369 Hardening of XPath evaluation (Daniel Veillard), 1370 Fix an off by one error in encoding (Daniel Veillard), 1371 Fix RELAX NG include bug #655288 (Shaun McCance), 1372 Fix XSD validation bug #630130 (Toyoda Eizi), 1373 Fix some potential problems on reallocation failures (Chris Evans), 1374 __xmlRaiseError: fix use of the structured callback channel (Dmitry V. Levin), 1375 __xmlRaiseError: fix the structured callback channel's data initialization (Dmitry V. Levin), 1376 Fix memory corruption when xmlParseBalancedChunkMemoryInternal is called from xmlParseBalancedChunk (Rob Richards), 1377 Small fix for previous commit (Daniel Veillard), 1378 Fix a potential freeing error in XPath (Daniel Veillard), 1379 Fix a potential memory access error (Daniel Veillard), 1380 Reactivate the shared library versionning script (Daniel Veillard) 1381 </li> 1382 1383 <li>Improvements: 1384 use mingw C99 compatible functions {v}snprintf instead those from MSVC runtime (Roumen Petrov), 1385 New symbols added for the next release (Daniel Veillard), 1386 xmlTextReader bails too quickly on error (Andy Lutomirski), 1387 Use a hybrid allocation scheme in xmlNodeSetContent (Conrad Irwin), 1388 Use buffers when constructing string node lists. (Conrad Irwin), 1389 Add HTML parser support for HTML5 meta charset encoding declaration (Denis Pauk), 1390 wrong message for double hyphen in comment XML error (Bryan Henderson), 1391 Fix "make tst" to grab lzma lib too (Daniel Veillard), 1392 Add "whereis" command to xmllint shell (Ryan), 1393 Improve xmllint shell (Ryan), 1394 add function xmlTextReaderRelaxNGValidateCtxt() (Noam Postavsky), 1395 Add --system support to autogen.sh (Daniel Veillard), 1396 Add hash randomization to hash and dict structures (Daniel Veillard), 1397 included xzlib in dist (Anders F Bjorklund), 1398 move xz/lzma helpers to separate included files (Anders F Bjorklund), 1399 add generated devhelp files (Anders F Bjorklund), 1400 add XML_WITH_LZMA to api (Anders F Bjorklund), 1401 autogen.sh: Honor NOCONFIGURE environment variable (Colin Walters), 1402 Improve the error report on undefined REFs (Daniel Veillard), 1403 Add exception for new W3C PI xml-model (Daniel Veillard), 1404 Add options to ignore the internal encoding (Daniel Veillard), 1405 testapi: use the right type for the check (Stefan Kost), 1406 various: handle return values of write calls (Stefan Kost), 1407 testWriter: xmlTextWriterWriteFormatElement wants an int instead of a long int (Stefan Kost), 1408 runxmlconf: update to latest testsuite version (Stefan Kost), 1409 configure: add -Wno-long-long to CFLAGS (Stefan Kost), 1410 configure: support silent automake rules if possible (Stefan Kost), 1411 xmlmemory: add a cast as size_t has no portable printf modifier (Stefan Kost), 1412 __xmlRaiseError: remove redundant schannel initialization (Dmitry V. Levin), 1413 __xmlRaiseError: do cheap code check early (Dmitry V. Levin) 1414 </li> 1415 1416 <li>Cleanups: 1417 Cleanups before 2.8.0-rc2 (Daniel Veillard), 1418 Avoid an extra operation (Daniel Veillard), 1419 Remove vestigial de-ANSI-fication support. (Javier Jardón), 1420 autogen.sh: Fix typo (Javier Jardón), 1421 Do not use unsigned but unsigned int (Daniel Veillard), 1422 Remove two references to u_short (Daniel Veillard), 1423 Fix -Wempty-body warning from clang (Nico Weber), 1424 Cleanups of lzma support (Daniel Veillard), 1425 Augment the list of ignored files (Daniel Veillard), 1426 python: remove unused variable (Stefan Kost), 1427 python: flag two unused args (Stefan Kost), 1428 configure: acconfig.h is deprecated since autoconf-2.50 (Stefan Kost), 1429 xpath: remove unused variable (Stefan Kost) 1430 </li> 1431 </ul> 1432 <h3>2.7.8: Nov 4 2010</h3> 1433 <ul> 1434 <li> Features: 1435 480323 add code to plug in ICU converters by default (Giuseppe Iuculano), 1436 Add xmlSaveOption XML_SAVE_WSNONSIG (Adam Spragg) 1437 </li> 1438 <li> Documentation: 1439 Fix devhelp documentation installation (Mike Hommey), 1440 Fix web site encoding problems (Daniel Veillard), 1441 Fix a couple of typo in HTML parser error messages (Michael Day), 1442 Forgot to update the news page for 0.7.7 (Daniel Veillard) 1443 </li> 1444 <li> Portability: 1445 607273 Fix python detection on MSys/Windows (LRN), 1446 614087 Fix Socket API usage to allow Windows64 compilation (Ozkan Sezer), 1447 Fix compilation with Clang (Koop Mast), 1448 Fix Win32 build (Rob Richards) 1449 </li> 1450 <li> Bug Fixes: 1451 595789 fix a remaining potential Solaris problem (Daniel Veillard), 1452 617468 fix progressive HTML parsing with style using "'" (Denis Pauk), 1453 616478 Fix xmllint shell write command (Gwenn Kahz), 1454 614005 Possible erroneous HTML parsing on unterminated script (Pierre Belzile), 1455 627987 Fix XSD IDC errors in imported schemas (Jim Panetta), 1456 629325 XPath rounding errors first cleanup (Phil Shafer), 1457 630140 fix iso995x encoding error (Daniel Veillard), 1458 make sure htmlCtxtReset do reset the disableSAX field (Daniel Veillard), 1459 Fix a change of semantic on XPath preceding and following axis (Daniel Veillard), 1460 Fix a potential segfault due to weak symbols on pthreads (Mike Hommey), 1461 Fix a leak in XPath compilation (Daniel Veillard), 1462 Fix the semantic of XPath axis for namespace/attribute context nodes (Daniel Veillard), 1463 Avoid a descriptor leak in catalog loading code (Carlo Bramini), 1464 Fix a small bug in XPath evaluation code (Marius Wachtler), 1465 Fix handling of XML-1.0 XML namespace declaration (Daniel Veillard), 1466 Fix errors in XSD double validation check (Csaba Raduly), 1467 Fix handling of apos in URIs (Daniel Veillard), 1468 xmlTextReaderReadOuterXml should handle DTD (Rob Richards), 1469 Autogen.sh needs to create m4 directory (Rob Richards) 1470 </li> 1471 <li> Improvements: 1472 606592 update language ID parser to RFC 5646 (Daniel Veillard), 1473 Sort python generated stubs (Mike Hommey), 1474 Add an HTML parser option to avoid a default doctype (Daniel Veillard) 1475 </li> 1476 <li> Cleanups: 1477 618831 don't ship generated files in git (Adrian Bunk), 1478 Switch from the obsolete mkinstalldirs to AC_PROG_MKDIR_P (Adrian Bunk), 1479 Various cleanups on encoding handling (Daniel Veillard), 1480 Fix xmllint to use format=1 for default formatting (Adam Spragg), 1481 Force _xmlSaveCtxt.format to be 0 or 1 (Adam Spragg), 1482 Cleanup encoding pointer comparison (Nikolay Sivov), 1483 Small code cleanup on previous patch (Daniel Veillard) 1484 </li> 1485 </ul> 1486 <h3>2.7.7: Mar 15 2010</h3> 1487 <ul> 1488 <li> Improvements: 1489 Adding a --xpath option to xmllint (Daniel Veillard), 1490 Make HTML parser non-recursive (Eugene Pimenov) 1491 </li> 1492 <li> Portability: 1493 relaxng.c: cast to allow compilation with sun studio 11 (Ben Walton), 1494 Fix build failure on Sparc solaris (Roumen Petrov), 1495 use autoreconf in autogen.sh (Daniel Veillard), 1496 Fix build with mingw (Roumen Petrov), 1497 Upgrade some of the configure and autogen (Daniel Veillard), 1498 Fix relaxNG tests in runtest for Windows runtest.c: initialize ret (Rob Richards), 1499 Fix a const warning in xmlNodeSetBase (Martin Trappel), 1500 Fix python generator to not use deprecated xmllib (Daniel Veillard), 1501 Update some automake files (Daniel Veillard), 1502 598785 Fix nanohttp on Windows (spadix) 1503 </li> 1504 <li> Bug Fixes: 1505 libxml violates the zlib interface and crashes (Mark Adler), 1506 Fix broken escape behaviour in regexp ranges (Daniel Veillard), 1507 Fix missing win32 libraries in libxml-2.0.pc (Volker Grabsch), 1508 Fix detection of python linker flags (Daniel Macks), 1509 fix build error in libxml2/python (Paul Smith), 1510 ChunkParser: Incorrect decoding of small xml files (Raul Hudea), 1511 htmlCheckEncoding doesn't update input-end after shrink (Eugene Pimenov), 1512 Fix a missing #ifdef (Daniel Veillard), 1513 Fix encoding selection for xmlParseInNodeContext (Daniel Veillard), 1514 xmlPreviousElementSibling mistake (François Delyon), 1515 608773 add a missing check in xmlGROW (Daniel Veillard), 1516 Fix xmlParseInNodeContext for HTML content (Daniel Veillard), 1517 Fix lost namespace when copying node * tree.c: reconcile namespace if not found (Rob Richards), 1518 Fix some missing commas in HTML element lists (Eugene Pimenov), 1519 Correct variable type to unsigned (Nikolay Sivov), 1520 Recognize ID attribute in HTML without DOCTYPE (Daniel Veillard), 1521 Fix memory leak in xmlXPathEvalExpression() (Martin), 1522 Fix an init bug in global.c (Kai Henning), 1523 Fix xmlNodeSetBase() comment (Daniel Veillard), 1524 Fix broken escape behaviour in regexp ranges (Daniel Veillard), 1525 Don't give default HTML boolean attribute values in parser (Daniel Veillard), 1526 xmlCtxtResetLastError should reset ctxt-errNo (Daniel Veillard) 1527 </li> 1528 <li> Cleanups: 1529 Cleanup a couple of weirdness in HTML parser (Eugene Pimenov) 1530 </li> 1531 </ul> 1532 <h3>2.7.6: Oct 6 2009</h3> 1533 <ul> 1534 <li> Bug Fixes: 1535 Restore thread support in default configuration (Andrew W. Nosenko), 1536 URI with no path parsing problem (Daniel Veillard), 1537 Minor patch for conditional defines in threads.c (Eric Zurcher) 1538 </li> 1539 </ul> 1540 <h3>2.7.5: Sep 24 2009</h3> 1541 <ul> 1542 <li> Bug Fixes: 1543 Restore behavior of --with-threads without argument (Andrew W. Nosenko), 1544 Fix memory leak when doc is NULL (Rob Richards), 1545 595792 fixing a RelaxNG bug introduced in 2.7.4 (Daniel Veillard), 1546 Fix a Relaxng bug raised by libvirt test suite (Daniel Veillard), 1547 Fix a parsing problem with little data at startup (Daniel Veillard), 1548 link python module with python library (Frederic Crozat), 1549 594874 Forgot an fclose in xmllint (Daniel Veillard) 1550 </li> 1551 <li> Cleanup: 1552 Adding symbols.xml to EXTRA_DIST (Daniel Veillard) 1553 </li> 1554 </ul> 1555 <h3>2.7.4: Sep 10 2009</h3> 1556 <ul> 1557 <li>Improvements: 1558 Switch to GIT (GNOME), 1559 Add symbol versioning to libxml2 shared libs (Daniel Veillard) 1560 </li> 1561 <li>Portability: 1562 593857 try to work around thread pbm MinGW 4.4 (Daniel Veillard), 1563 594250 rename ATTRIBUTE_ALLOC_SIZE to avoid clashes (Daniel Veillard), 1564 Fix Windows build * relaxng.c: fix windows build (Rob Richards), 1565 Fix the globals.h to use XMLPUBFUN (Paul Smith), 1566 Problem with extern extern in header (Daniel Veillard), 1567 Add -lnetwork for compiling on Haiku (Scott McCreary), 1568 Runtest portability patch for Solaris (Tim Rice), 1569 Small patch to accomodate the Haiku OS (Scott McCreary), 1570 584605 package VxWorks folder in the distribution (Daniel Veillard), 1571 574017 Realloc too expensive on most platform (Daniel Veillard), 1572 Fix windows build (Rob Richards), 1573 545579 doesn't compile without schema support (Daniel Veillard), 1574 xmllint use xmlGetNodePath when not compiled in (Daniel Veillard), 1575 Try to avoid __imp__xmlFree link trouble on msys (Daniel Veillard), 1576 Allow to select the threading system on Windows (LRN), 1577 Fix Solaris binary links, cleanups (Daniel Veillard), 1578 Bug 571059 – MSVC doesn't work with the bakefile (Intron), 1579 fix ATTRIBUTE_PRINTF header clash (Belgabor and Mike Hommey), 1580 fixes for Borland/CodeGear/Embarcadero compilers (Eric Zurcher) 1581 </li> 1582 <li>Documentation: 1583 544910 typo: "renciliateNs" (Leonid Evdokimov), 1584 Add VxWorks to list of OSes (Daniel Veillard), 1585 Regenerate the documentation and update for git (Daniel Veillard), 1586 560524 ¿ xmlTextReaderLocalName description (Daniel Veillard), 1587 Added sponsoring by AOE media for the server (Daniel Veillard), 1588 updated URLs for GNOME (Vincent Lefevre), 1589 more warnings about xmlCleanupThreads and xmlCleanupParser (Daniel Veillard) 1590 </li> 1591 <li>Bug fixes: 1592 594514 memory leaks - duplicate initialization (MOD), 1593 Wrong block opening in htmlNodeDumpOutputInternal (Daniel Veillard), 1594 492317 Fix Relax-NG validation problems (Daniel Veillard), 1595 558452 fight with reg test and error report (Daniel Veillard), 1596 558452 RNG compilation of optional multiple child (Daniel Veillard), 1597 579746 XSD validation not correct / nilable groups (Daniel Veillard), 1598 502960 provide namespace stack when parsing entity (Daniel Veillard), 1599 566012 part 2 fix regresion tests and push mode (Daniel Veillard), 1600 566012 autodetected encoding and encoding conflict (Daniel Veillard), 1601 584220 xpointer(/) and xinclude problems (Daniel Veillard), 1602 587663 Incorrect Attribute-Value Normalization (Daniel Veillard), 1603 444994 HTML chunked failure for attribute with <> (Daniel Veillard), 1604 Fix end of buffer char being split in XML parser (Daniel Veillard), 1605 Non ASCII character may be split at buffer end (Adiel Mittmann), 1606 440226 Add xmlXIncludeProcessTreeFlagsData API (Stefan Behnel), 1607 572129 speed up parsing of large HTML text nodes (Markus Kull), 1608 Fix HTML parsing with 0 character in CDATA (Daniel Veillard), 1609 Fix SetGenericErrorFunc and SetStructured clash (Wang Lam), 1610 566012 Incomplete EBCDIC parsing support (Martin Kogler), 1611 541335 HTML avoid creating 2 head or 2 body element (Daniel Veillard), 1612 541237 error correcting missing end tags in HTML (Daniel Veillard), 1613 583439 missing line numbers in push mode (Daniel Veillard), 1614 587867 xmllint --html --xmlout serializing as HTML (Daniel Veillard), 1615 559501 avoid select and use poll for nanohttp (Raphael Prevost), 1616 559410 - Regexp bug on (...)? constructs (Daniel Veillard), 1617 Fix a small problem on previous HTML parser patch (Daniel Veillard), 1618 592430 - HTML parser runs into endless loop (Daniel Veillard), 1619 447899 potential double free in xmlFreeTextReader (Daniel Veillard), 1620 446613 small validation bug mixed content with NS (Daniel Veillard), 1621 Fix the problem of revalidating a doc with RNG (Daniel Veillard), 1622 Fix xmlKeepBlanksDefault to not break indent (Nick Wellnhofer), 1623 512131 refs from externalRef part need to be added (Daniel Veillard), 1624 512131 crash in xmlRelaxNGValidateFullElement (Daniel Veillard), 1625 588441 allow '.' in HTML Names even if invalid (Daniel Veillard), 1626 582913 Fix htmlSetMetaEncoding() to be nicer (Daniel Veillard), 1627 579317 Try to find the HTML encoding information (Daniel Veillard), 1628 575875 don't output charset=html (Daniel Veillard), 1629 571271 fix semantic of xsd:all with minOccurs=0 (Daniel Veillard), 1630 570702 fix a bug in regexp determinism checking (Daniel Veillard), 1631 567619 xmlValidateNotationUse missing param test (Daniel Veillard), 1632 574393 ¿ utf-8 filename magic for compressed files (Hans Breuer), 1633 Fix a couple of problems in the parser (Daniel Veillard), 1634 585505 ¿ Document ids and refs populated by XSD (Wayne Jensen), 1635 582906 XSD validating multiple imports of the same schema (Jason Childs), 1636 Bug 582887 ¿ problems validating complex schemas (Jason Childs), 1637 Bug 579729 ¿ fix XSD schemas parsing crash (Miroslav Bajtos), 1638 576368 ¿ htmlChunkParser with special attributes (Jiri Netolicky), 1639 Bug 565747 ¿ relax anyURI data character checking (Vincent Lefevre), 1640 Preserve attributes of include start on tree copy (Petr Pajas), 1641 Skip silently unrecognized XPointer schemes (Jakub Wilk), 1642 Fix leak on SAX1, xmllint --sax1 option and debug (Daniel Veillard), 1643 potential NULL dereference on non-glibc (Jim Meyering), 1644 Fix an XSD validation crash (Daniel Veillard), 1645 Fix a regression in streaming entities support (Daniel Veillard), 1646 Fix a couple of ABI issues with C14N 1.1 (Aleksey Sanin), 1647 Aleksey Sanin support for c14n 1.1 (Aleksey Sanin), 1648 reader bug fix with entities (Daniel Veillard), 1649 use options from current parser ctxt for external entities (Rob Richards), 1650 581612 use %s to printf strings (Christian Persch), 1651 584605 change the threading initialization sequence (Igor Novoseltsev), 1652 580705 keep line numbers in HTML parser (Aaron Patterson), 1653 581803 broken HTML table attributes init (Roland Steiner), 1654 do not set error code in xmlNsWarn (Rob Richards), 1655 564217 fix structured error handling problems, 1656 reuse options from current parser for entities (Rob Richards), 1657 xmlXPathRegisterNs should not allow enpty prefixes (Daniel Veillard), 1658 add a missing check in xmlAddSibling (Kris Breuker), 1659 avoid leaks on errors (Jinmei Tatuya) 1660 </li> 1661 <li>Cleanup: 1662 Chasing dead assignments reported by clang-scan (Daniel Veillard), 1663 A few more safety cleanup raised by scan (Daniel Veillard), 1664 Fixing assorted potential problems raised by scan (Daniel Veillard), 1665 Potential uninitialized arguments raised by scan (Daniel Veillard), 1666 Fix a bunch of scan 'dead increments' and cleanup (Daniel Veillard), 1667 Remove a pedantic warning (Daniel Veillard), 1668 555833 always use rm -f in uninstall-local (Daniel Veillard), 1669 542394 xmlRegisterOutputCallbacks MAX_INPUT_CALLBACK (Daniel Veillard), 1670 Autoregenerate libxml2.syms automated checkings (Daniel Veillard), 1671 Make xmlRecoverDoc const (Martin Trappel) (Daniel Veillard), 1672 Both args of xmlStrcasestr are const (Daniel Veillard), 1673 hide the nbParse* variables used for debugging (Mike Hommey), 1674 570806 changed include of config.h (William M. Brack), 1675 cleanups and error reports when xmlTextWriterVSprintf fails (Jinmei Tatuya) 1676 </li> 1677 </ul> 1678 <h3>2.7.3: Jan 18 2009</h3> 1679 <ul> 1680 <li>Build fix: fix build when HTML support is not included.</li> 1681 <li>Bug fixes: avoid memory overflow in gigantic text nodes, 1682 indentation problem on the writed (Rob Richards), 1683 xmlAddChildList pointer problem (Rob Richards and Kevin Milburn), 1684 xmlAddChild problem with attribute (Rob Richards and Kris Breuker), 1685 avoid a memory leak in an edge case (Daniel Zimmermann), 1686 deallocate some pthread data (Alex Ott).</li> 1687 <li>Improvements: configure option to avoid rebuilding docs (Adrian Bunk), 1688 limit text nodes to 10MB max by default, add element traversal 1689 APIs, add a parser option to enable pre 2.7 SAX behavior (Rob Richards), 1690 add gcc malloc checking (Marcus Meissner), add gcc printf like functions 1691 parameters checking (Marcus Meissner).</li> 1692 </ul> 1693 <h3>2.7.2: Oct 3 2008</h3> 1694 <ul> 1695 <li>Portability fix: fix solaris compilation problem, fix compilation 1696 if XPath is not configured in</li> 1697 <li>Bug fixes: nasty entity bug introduced in 2.7.0, restore old behaviour 1698 when saving an HTML doc with an xml dump function, HTML UTF-8 parsing 1699 bug, fix reader custom error handlers (Riccardo Scussat) 1700 <li>Improvement: xmlSave options for more flexibility to save as 1701 XML/HTML/XHTML, handle leading BOM in HTML documents</li> 1702 </ul> 1703 1704 <h3>2.7.1: Sep 1 2008</h3> 1705 <ul> 1706 <li>Portability fix: Borland C fix (Moritz Both)</li> 1707 <li>Bug fixes: python serialization wrappers, XPath QName corner 1708 case handking and leaks (Martin)</li> 1709 <li>Improvement: extend the xmlSave to handle HTML documents and trees</li> 1710 <li>Cleanup: python serialization wrappers</li> 1711 </ul> 1712 1713 <h3>2.7.0: Aug 30 2008</h3> 1714 <ul> 1715 <li>Documentation: switch ChangeLog to UTF-8, improve mutithreads and 1716 xmlParserCleanup docs</li> 1717 <li>Portability fixes: Older Win32 platforms (Rob Richards), MSVC 1718 porting fix (Rob Richards), Mac OS X regression tests (Sven Herzberg), 1719 non GNUCC builds (Rob Richards), compilation on Haiku (Andreas Färber) 1720 </li> 1721 <li>Bug fixes: various realloc problems (Ashwin), potential double-free 1722 (Ashwin), regexp crash, icrash with invalid whitespace facets (Rob 1723 Richards), pattern fix when streaming (William Brack), various XML 1724 parsing and validation fixes based on the W3C regression tests, reader 1725 tree skipping function fix (Ashwin), Schemas regexps escaping fix 1726 (Volker Grabsch), handling of entity push errors (Ashwin), fix a slowdown 1727 when encoder cant serialize characters on output</li> 1728 <li>Code cleanup: compilation fix without the reader, without the output 1729 (Robert Schwebel), python whitespace (Martin), many space/tabs cleanups, 1730 serious cleanup of the entity handling code</li> 1731 <li>Improvement: switch parser to XML-1.0 5th edition, add parsing flags 1732 for old versions, switch URI parsing to RFC 3986, 1733 add xmlSchemaValidCtxtGetParserCtxt (Holger Kaelberer), 1734 new hashing functions for dictionnaries (based on Stefan Behnel work), 1735 improve handling of misplaced html/head/body in HTML parser, better 1736 regression test tools and code coverage display, better algorithms 1737 to detect various versions of the billion laughts attacks, make 1738 arbitrary parser limits avoidable as a parser option</li> 1739 </ul> 1740 <h3>2.6.32: Apr 8 2008</h3> 1741 <ul> 1742 <li>Documentation: returning heap memory to kernel (Wolfram Sang), 1743 trying to clarify xmlCleanupParser() use, xmlXPathContext improvement 1744 (Jack Jansen), improve the *Recover* functions documentation, 1745 XmlNodeType doc link fix (Martijn Arts)</li> 1746 <li>Bug fixes: internal subset memory leak (Ashwin), avoid problem with 1747 paths starting with // (Petr Sumbera), streaming XSD validation callback 1748 patches (Ashwin), fix redirection on port other than 80 (William Brack), 1749 SAX2 leak (Ashwin), XInclude fragment of own document (Chris Ryan), 1750 regexp bug with '.' (Andrew Tosh), flush the writer at the end of the 1751 document (Alfred Mickautsch), output I/O bug fix (William Brack), 1752 writer CDATA output after a text node (Alex Khesin), UTF-16 encoding 1753 detection (William Brack), fix handling of empty CDATA nodes for Safari 1754 team, python binding problem with namespace nodes, improve HTML parsing 1755 (Arnold Hendriks), regexp automata build bug, memory leak fix (Vasily 1756 Chekalkin), XSD test crash, weird system parameter entity parsing problem, 1757 allow save to file:///X:/ windows paths, various attribute normalisation 1758 problems, externalSubsetSplit fix (Ashwin), attribute redefinition in 1759 the DTD (Ashwin), fix in char ref parsing check (Alex Khesin), many 1760 out of memory handling fixes (Ashwin), XPath out of memory handling fixes 1761 (Alvaro Herrera), various realloc problems (Ashwin), UCS4 encoding 1762 conversion buffer size (Christian Fruth), problems with EatName 1763 functions on memory errors, BOM handling in external parsed entities 1764 (Mark Rowe)</li> 1765 <li>Code cleanup: fix build under VS 2008 (David Wimsey), remove useless 1766 mutex in xmlDict (Florent Guilian), Mingw32 compilation fix (Carlo 1767 Bramini), Win and MacOS EOL cleanups (Florent Guiliani), iconv need 1768 a const detection (Roumen Petrov), simplify xmlSetProp (Julien Charbon), 1769 cross compilation fixes for Mingw (Roumen Petrov), SCO Openserver build 1770 fix (Florent Guiliani), iconv uses const on Win32 (Rob Richards), 1771 duplicate code removal (Ashwin), missing malloc test and error reports 1772 (Ashwin), VMS makefile fix (Tycho Hilhorst)</li> 1773 <li>improvements: better plug of schematron in the normal error handling 1774 (Tobias Minich)</li> 1775 </ul> 1776 1777 <h3>2.6.31: Jan 11 2008</h3> 1778 <ul> 1779 <li>Security fix: missing of checks in UTF-8 parsing</li> 1780 <li>Bug fixes: regexp bug, dump attribute from XHTML document, fix 1781 xmlFree(NULL) to not crash in debug mode, Schematron parsing crash 1782 (Rob Richards), global lock free on Windows (Marc-Antoine Ruel), 1783 XSD crash due to double free (Rob Richards), indentation fix in 1784 xmlTextWriterFullEndElement (Felipe Pena), error in attribute type 1785 parsing if attribute redeclared, avoid crash in hash list scanner if 1786 deleting elements, column counter bug fix (Christian Schmidt), 1787 HTML embed element saving fix (Stefan Behnel), avoid -L/usr/lib 1788 output from xml2-config (Fred Crozat), avoid an xmllint crash 1789 (Stefan Kost), don't stop HTML parsing on out of range chars. 1790 </li> 1791 <li>Code cleanup: fix open() call third argument, regexp cut'n paste 1792 copy error, unused variable in __xmlGlobalInitMutexLock (Hannes Eder), 1793 some make distcheck realted fixes (John Carr)</li> 1794 <li>Improvements: HTTP Header: includes port number (William Brack), 1795 testURI --debug option, </li> 1796 </ul> 1797 <h3>2.6.30: Aug 23 2007</h3> 1798 <ul> 1799 <li>Portability: Solaris crash on error handling, windows path fixes 1800 (Roland Schwarz and Rob Richards), mingw build (Roland Schwarz)</li> 1801 <li>Bugfixes: xmlXPathNodeSetSort problem (William Brack), leak when 1802 reusing a writer for a new document (Dodji Seketeli), Schemas 1803 xsi:nil handling patch (Frank Gross), relative URI build problem 1804 (Patrik Fimml), crash in xmlDocFormatDump, invalid char in comment 1805 detection bug, fix disparity with xmlSAXUserParseMemory, automata 1806 generation for complex regexp counts problems, Schemas IDC import 1807 problems (Frank Gross), xpath predicate evailation error handling 1808 (William Brack)</li> 1809 </ul> 1810 <h3>2.6.29: Jun 12 2007</h3> 1811 <ul> 1812 <li>Portability: patches from Andreas Stricke for WinCEi, 1813 fix compilation warnings (William Brack), avoid warnings on Apple OS/X 1814 (Wendy Doyle and Mark Rowe), Windows compilation and threading 1815 improvements (Rob Richards), compilation against old Python versions, 1816 new GNU tar changes (Ryan Hill)</li> 1817 <li>Documentation: xmlURIUnescapeString comment, </li> 1818 <li>Bugfixes: xmlBufferAdd problem (Richard Jones), 'make valgrind' 1819 flag fix (Richard Jones), regexp interpretation of \, 1820 htmlCreateDocParserCtxt (Jean-Daniel Dupas), configure.in 1821 typo (Bjorn Reese), entity content failure, xmlListAppend() fix 1822 (Georges-André Silber), XPath number serialization (William Brack), 1823 nanohttp gzipped stream fix (William Brack and Alex Cornejo), 1824 xmlCharEncFirstLine typo (Mark Rowe), uri bug (François Delyon), 1825 XPath string value of PI nodes (William Brack), XPath node set 1826 sorting bugs (William Brack), avoid outputting namespace decl 1827 dups in the writer (Rob Richards), xmlCtxtReset bug, UTF-8 encoding 1828 error handling, recustion on next in catalogs, fix a Relax-NG crash, 1829 workaround wrong file: URIs, htmlNodeDumpFormatOutput on attributes, 1830 invalid character in attribute detection bug, big comments before 1831 internal subset streaming bug, HTML parsing of attributes with : in 1832 the name, IDness of name in HTML (Dagfinn I. MannsÃ¥ker) </li> 1833 <li>Improvement: keep URI query parts in raw form (Richard Jones), 1834 embed tag support in HTML (Michael Day) </li> 1835 </ul> 1836 1837 <h3>2.6.28: Apr 17 2007</h3> 1838 <ul> 1839 <li>Documentation: comment fixes (Markus Keim), xpath comments fixes too 1840 (James Dennett)</li> 1841 <li>Bug fixes: XPath bug (William Brack), HTML parser autoclose stack usage 1842 (Usamah Malik), various regexp bug fixes (DV and William), path conversion 1843 on Windows (Igor Zlatkovic), htmlCtxtReset fix (Michael Day), XPath 1844 principal node of axis bug, HTML serialization of some codepoint 1845 (Steven Rainwater), user data propagation in XInclude (Michael Day), 1846 standalone and XML decl detection (Michael Day), Python id ouptut 1847 for some id, fix the big python string memory leak, URI parsing fixes 1848 (Stéphane Bidoul and William), long comments parsing bug (William), 1849 concurrent threads initialization (Ted Phelps), invalid char 1850 in text XInclude (William), XPath memory leak (William), tab in 1851 python problems (Andreas Hanke), XPath node comparison error 1852 (Oleg Paraschenko), cleanup patch for reader (Julien Reichel), 1853 XML Schemas attribute group (William), HTML parsing problem (William), 1854 fix char 0x2d in regexps (William), regexp quantifier range with 1855 min occurs of 0 (William), HTML script/style parsing (Mike Day)</li> 1856 <li>Improvement: make xmlTextReaderSetup() public</li> 1857 <li>Compilation and postability: fix a missing include problem (William), 1858 __ss_familly on AIX again (Björn Wiberg), compilation without zlib 1859 (Michael Day), catalog patch for Win32 (Christian Ehrlicher), 1860 Windows CE fixes (Andreas Stricke)</li> 1861 <li>Various CVS to SVN infrastructure changes</li> 1862 </ul> 1863 <h3>2.6.27: Oct 25 2006</h3> 1864 <ul> 1865 <li>Portability fixes: file names on windows (Roland Schwingel, 1866 Emelyanov Alexey), windows compile fixup (Rob Richards), 1867 AIX iconv() is apparently case sensitive</li> 1868 <li>improvements: Python XPath types mapping (Nic Ferrier), XPath optimization 1869 (Kasimier), add xmlXPathCompiledEvalToBoolean (Kasimier), Python node 1870 equality and comparison (Andreas Pakulat), xmlXPathCollectAndTest 1871 improvememt (Kasimier), expose if library was compiled with zlib 1872 support (Andrew Nosenko), cache for xmlSchemaIDCMatcher structs 1873 (Kasimier), xmlTextConcat should work with comments and PIs (Rob 1874 Richards), export htmlNewParserCtxt needed by Michael Day, refactoring 1875 of catalog entity loaders (Michael Day), add XPointer support to 1876 python bindings (Ross Reedstrom, Brian West and Stefan Anca), 1877 try to sort out most file path to URI conversions and xmlPathToUri, 1878 add --html --memory case to xmllint</li> 1879 <li>building fix: fix --with-minimum (Felipe Contreras), VMS fix, 1880 const'ification of HTML parser structures (Matthias Clasen), 1881 portability fix (Emelyanov Alexey), wget autodetection (Peter 1882 Breitenlohner), remove the build path recorded in the python 1883 shared module, separate library flags for shared and static builds 1884 (Mikhail Zabaluev), fix --with-minimum --with-sax1 builds, fix 1885 --with-minimum --with-schemas builds</li> 1886 <li>bug fix: xmlGetNodePath fix (Kasimier), xmlDOMWrapAdoptNode and 1887 attribute (Kasimier), crash when using the recover mode, 1888 xmlXPathEvalExpr problem (Kasimier), xmlXPathCompExprAdd bug (Kasimier), 1889 missing destry in xmlFreeRMutex (Andrew Nosenko), XML Schemas fixes 1890 (Kasimier), warning on entities processing, XHTML script and style 1891 serialization (Kasimier), python generator for long types, bug in 1892 xmlSchemaClearValidCtxt (Bertrand Fritsch), xmlSchemaXPathEvaluate 1893 allocation bug (Marton Illes), error message end of line (Rob Richards), 1894 fix attribute serialization in writer (Rob Richards), PHP4 DTD validation 1895 crasher, parser safety patch (Ben Darnell), _private context propagation 1896 when parsing entities (with Michael Day), fix entities behaviour when 1897 using SAX, URI to file path fix (Mikhail Zabaluev), disapearing validity 1898 context, arg error in SAX callback (Mike Hommey), fix mixed-content 1899 autodetect when using --noblanks, fix xmlIOParseDTD error handling, 1900 fix bug in xmlSplitQName on special Names, fix Relax-NG element content 1901 validation bug, fix xmlReconciliateNs bug, fix potential attribute 1902 XML parsing bug, fix line/column accounting in XML parser, chunking bug 1903 in the HTML parser on script, try to detect obviously buggy HTML 1904 meta encoding indications, bugs with encoding BOM and xmlSaveDoc, 1905 HTML entities in attributes parsing, HTML minimized attribute values, 1906 htmlReadDoc and htmlReadIO were broken, error handling bug in 1907 xmlXPathEvalExpression (Olaf Walkowiak), fix a problem in 1908 htmlCtxtUseOptions, xmlNewInputFromFile could leak (Marius Konitzer), 1909 bug on misformed SSD regexps (Christopher Boumenot) 1910 </li> 1911 <li>documentation: warning about XML_PARSE_COMPACT (Kasimier Buchcik), 1912 fix xmlXPathCastToString documentation, improve man pages for 1913 xmllitn and xmlcatalog (Daniel Leidert), fixed comments of a few 1914 functions</li> 1915 </ul> 1916 <h3>2.6.26: Jun 6 2006</h3> 1917 <ul> 1918 <li>portability fixes: Python detection (Joseph Sacco), compilation 1919 error(William Brack and Graham Bennett), LynxOS patch (Olli Savia)</li> 1920 <li>bug fixes: encoding buffer problem, mix of code and data in 1921 xmlIO.c(Kjartan Maraas), entities in XSD validation (Kasimier Buchcik), 1922 variousXSD validation fixes (Kasimier), memory leak in pattern (Rob 1923 Richards andKasimier), attribute with colon in name (Rob Richards), XPath 1924 leak inerror reporting (Aleksey Sanin), XInclude text include of 1925 selfdocument.</li> 1926 <li>improvements: Xpath optimizations (Kasimier), XPath object 1927 cache(Kasimier)</li> 1928 </ul> 1929 1930 <h3>2.6.25: Jun 6 2006:</h3> 1931 1932 <p>Do not use or package 2.6.25</p> 1933 1934 <h3>2.6.24: Apr 28 2006</h3> 1935 <ul> 1936 <li>Portability fixes: configure on Windows, testapi compile on windows 1937 (Kasimier Buchcik, venkat naidu), Borland C++ 6 compile (Eric Zurcher), 1938 HP-UX compiler workaround (Rick Jones), xml2-config bugfix, gcc-4.1 1939 cleanups, Python detection scheme (Joseph Sacco), UTF-8 file paths on 1940 Windows (Roland Schwingel). 1941 </li> 1942 <li>Improvements: xmlDOMWrapReconcileNamespaces xmlDOMWrapCloneNode (Kasimier 1943 Buchcik), XML catalog debugging (Rick Jones), update to Unicode 4.01.</li> 1944 <li>Bug fixes: xmlParseChunk() problem in 2.6.23, xmlParseInNodeContext() 1945 on HTML docs, URI behaviour on Windows (Rob Richards), comment streaming 1946 bug, xmlParseComment (with William Brack), regexp bug fixes (DV & 1947 Youri Golovanov), xmlGetNodePath on text/CDATA (Kasimier), 1948 one Relax-NG interleave bug, xmllint --path and --valid, 1949 XSD bugfixes (Kasimier), remove debug 1950 left in Python bindings (Nic Ferrier), xmlCatalogAdd bug (Martin Cole), 1951 xmlSetProp fixes (Rob Richards), HTML IDness (Rob Richards), a large 1952 number of cleanups and small fixes based on Coverity reports, bug 1953 in character ranges, Unicode tables const (Aivars Kalvans), schemas 1954 fix (Stefan Kost), xmlRelaxNGParse error deallocation, 1955 xmlSchemaAddSchemaDoc error deallocation, error handling on unallowed 1956 code point, ixmllint --nonet to never reach the net (Gary Coady), 1957 line break in writer after end PI (Jason Viers). </li> 1958 <li>Documentation: man pages updates and cleanups (Daniel Leidert).</li> 1959 <li>New features: Relax NG structure error handlers.</li> 1960 </ul> 1961 1962 <h3>2.6.23: Jan 5 2006</h3> 1963 <ul> 1964 <li>portability fixes: Windows (Rob Richards), getaddrinfo on Windows 1965 (Kolja Nowak, Rob Richards), icc warnings (Kjartan Maraas), 1966 --with-minimum compilation fixes (William Brack), error case handling fix 1967 on Solaris (Albert Chin), don't use 'list' as parameter name reported by 1968 Samuel Diaz Garcia, more old Unices portability fixes (Albert Chin), 1969 MinGW compilation (Mark Junker), HP-UX compiler warnings (Rick 1970 Jones),</li> 1971 <li>code cleanup: xmlReportError (Adrian Mouat), remove xmlBufferClose 1972 (Geert Jansen), unreachable code (Oleksandr Kononenko), refactoring 1973 parsing code (Bjorn Reese)</li> 1974 <li>bug fixes: xmlBuildRelativeURI and empty path (William Brack), 1975 combinatory explosion and performances in regexp code, leak in 1976 xmlTextReaderReadString(), xmlStringLenDecodeEntities problem (Massimo 1977 Morara), Identity Constraints bugs and a segfault (Kasimier Buchcik), 1978 XPath pattern based evaluation bugs (DV & Kasimier), 1979 xmlSchemaContentModelDump() memory leak (Kasimier), potential leak in 1980 xmlSchemaCheckCSelectorXPath(), xmlTextWriterVSprintf() misuse of 1981 vsnprintf (William Brack), XHTML serialization fix (Rob Richards), CRLF 1982 split problem (William), issues with non-namespaced attributes in 1983 xmlAddChild() xmlAddNextSibling() and xmlAddPrevSibling() (Rob Richards), 1984 HTML parsing of script, Python must not output to stdout (Nic Ferrier), 1985 exclusive C14N namespace visibility (Aleksey Sanin), XSD dataype 1986 totalDigits bug (Kasimier Buchcik), error handling when writing to an 1987 xmlBuffer (Rob Richards), runtest schemas error not reported (Hisashi 1988 Fujinaka), signed/unsigned problem in date/time code (Albert Chin), fix 1989 XSI driven XSD validation (Kasimier), parsing of xs:decimal (Kasimier), 1990 fix DTD writer output (Rob Richards), leak in xmlTextReaderReadInnerXml 1991 (Gary Coady), regexp bug affecting schemas (Kasimier), configuration of 1992 runtime debugging (Kasimier), xmlNodeBufGetContent bug on entity refs 1993 (Oleksandr Kononenko), xmlRegExecPushString2 bug (Sreeni Nair), 1994 compilation and build fixes (Michael Day), removed dependancies on 1995 xmlSchemaValidError (Kasimier), bug with <xml:foo/>, more XPath 1996 pattern based evaluation fixes (Kasimier)</li> 1997 <li>improvements: XSD Schemas redefinitions/restrictions (Kasimier 1998 Buchcik), node copy checks and fix for attribute (Rob Richards), counted 1999 transition bug in regexps, ctxt->standalone = -2 to indicate no 2000 standalone attribute was found, add xmlSchemaSetParserStructuredErrors() 2001 (Kasimier Buchcik), add xmlTextReaderSchemaValidateCtxt() to API 2002 (Kasimier), handle gzipped HTTP resources (Gary Coady), add 2003 htmlDocDumpMemoryFormat. (Rob Richards),</li> 2004 <li>documentation: typo (Michael Day), libxml man page (Albert Chin), save 2005 function to XML buffer (Geert Jansen), small doc fix (Aron Stansvik),</li> 2006 </ul> 2007 2008 <h3>2.6.22: Sep 12 2005</h3> 2009 <ul> 2010 <li>build fixes: compile without schematron (Stéphane Bidoul)</li> 2011 <li>bug fixes: xmlDebugDumpNode on namespace node (Oleg Paraschenko)i, 2012 CDATA push parser bug, xmlElemDump problem with XHTML1 doc, 2013 XML_FEATURE_xxx clash with expat headers renamed XML_WITH_xxx, fix some 2014 output formatting for meta element (Rob Richards), script and style 2015 XHTML1 serialization (David Madore), Attribute derivation fixups in XSD 2016 (Kasimier Buchcik), better IDC error reports (Kasimier Buchcik)</li> 2017 <li>improvements: add XML_SAVE_NO_EMPTY xmlSaveOption (Rob Richards), add 2018 XML_SAVE_NO_XHTML xmlSaveOption, XML Schemas improvements preparing for 2019 derive (Kasimier Buchcik).</li> 2020 <li>documentation: generation of gtk-doc like docs, integration with 2021 devhelp.</li> 2022 </ul> 2023 2024 <h3>2.6.21: Sep 4 2005</h3> 2025 <ul> 2026 <li>build fixes: Cygwin portability fixes (Gerrit P. Haase), calling 2027 convention problems on Windows (Marcus Boerger), cleanups based on Linus' 2028 sparse tool, update of win32/configure.js (Rob Richards), remove warnings 2029 on Windows(Marcus Boerger), compilation without SAX1, detection of the 2030 Python binary, use $GCC inestad of $CC = 'gcc' (Andrew W. Nosenko), 2031 compilation/link with threads and old gcc, compile problem by C370 on 2032 Z/OS,</li> 2033 <li>bug fixes: http_proxy environments (Peter Breitenlohner), HTML UTF-8 2034 bug (Jiri Netolicky), XPath NaN compare bug (William Brack), 2035 htmlParseScript potential bug, Schemas regexp handling of spaces, Base64 2036 Schemas comparisons NIST passes, automata build error xsd:all, 2037 xmlGetNodePath for namespaced attributes (Alexander Pohoyda), xmlSchemas 2038 foreign namespaces handling, XML Schemas facet comparison (Kupriyanov 2039 Anatolij), xmlSchemaPSimpleTypeErr error report (Kasimier Buchcik), xml: 2040 namespace ahndling in Schemas (Kasimier), empty model group in Schemas 2041 (Kasimier), wilcard in Schemas (Kasimier), URI composition (William), 2042 xs:anyType in Schemas (Kasimier), Python resolver emmitting error 2043 messages directly, Python xmlAttr.parent (Jakub Piotr Clapa), trying to 2044 fix the file path/URI conversion, xmlTextReaderGetAttribute fix (Rob 2045 Richards), xmlSchemaFreeAnnot memleak (Kasimier), HTML UTF-8 2046 serialization, streaming XPath, Schemas determinism detection problem, 2047 XInclude bug, Schemas context type (Dean Hill), validation fix (Derek 2048 Poon), xmlTextReaderGetAttribute[Ns] namespaces (Rob Richards), Schemas 2049 type fix (Kuba Nowakowski), UTF-8 parser bug, error in encoding handling, 2050 xmlGetLineNo fixes, bug on entities handling, entity name extraction in 2051 error handling with XInclude, text nodes in HTML body tags (Gary Coady), 2052 xml:id and IDness at the treee level fixes, XPath streaming patterns 2053 bugs.</li> 2054 <li>improvements: structured interfaces for schemas and RNG error reports 2055 (Marcus Boerger), optimization of the char data inner loop parsing 2056 (thanks to Behdad Esfahbod for the idea), schematron validation though 2057 not finished yet, xmlSaveOption to omit XML declaration, keyref match 2058 error reports (Kasimier), formal expression handling code not plugged 2059 yet, more lax mode for the HTML parser, parser XML_PARSE_COMPACT option 2060 for text nodes allocation.</li> 2061 <li>documentation: xmllint man page had --nonet duplicated</li> 2062 </ul> 2063 2064 <h3>2.6.20: Jul 10 2005</h3> 2065 <ul> 2066 <li>build fixes: Windows build (Rob Richards), Mingw compilation (Igor 2067 Zlatkovic), Windows Makefile (Igor), gcc warnings (Kasimier and 2068 andriy@google.com), use gcc weak references to pthread to avoid the 2069 pthread dependancy on Linux, compilation problem (Steve Nairn), compiling 2070 of subset (Morten Welinder), IPv6/ss_family compilation (William Brack), 2071 compilation when disabling parts of the library, standalone test 2072 distribution.</li> 2073 <li>bug fixes: bug in lang(), memory cleanup on errors (William Brack), 2074 HTTP query strings (Aron Stansvik), memory leak in DTD (William), integer 2075 overflow in XPath (William), nanoftp buffer size, pattern "." apth fixup 2076 (Kasimier), leak in tree reported by Malcolm Rowe, replaceNode patch 2077 (Brent Hendricks), CDATA with NULL content (Mark Vakoc), xml:base fixup 2078 on XInclude (William), pattern fixes (William), attribute bug in 2079 exclusive c14n (Aleksey Sanin), xml:space and xml:lang with SAX2 (Rob 2080 Richards), namespace trouble in complex parsing (Malcolm Rowe), XSD type 2081 QNames fixes (Kasimier), XPath streaming fixups (William), RelaxNG bug 2082 (Rob Richards), Schemas for Schemas fixes (Kasimier), removal of ID (Rob 2083 Richards), a small RelaxNG leak, HTML parsing in push mode bug (James 2084 Bursa), failure to detect UTF-8 parsing bugs in CDATA sections, 2085 areBlanks() heuristic failure, duplicate attributes in DTD bug 2086 (William).</li> 2087 <li>improvements: lot of work on Schemas by Kasimier Buchcik both on 2088 conformance and streaming, Schemas validation messages (Kasimier Buchcik, 2089 Matthew Burgess), namespace removal at the python level (Brent 2090 Hendricks), Update to new Schemas regression tests from W3C/Nist 2091 (Kasimier), xmlSchemaValidateFile() (Kasimier), implementation of 2092 xmlTextReaderReadInnerXml and xmlTextReaderReadOuterXml (James Wert), 2093 standalone test framework and programs, new DOM import APIs 2094 xmlDOMWrapReconcileNamespaces() xmlDOMWrapAdoptNode() and 2095 xmlDOMWrapRemoveNode(), extension of xmllint capabilities for SAX and 2096 Schemas regression tests, xmlStopParser() available in pull mode too, 2097 ienhancement to xmllint --shell namespaces support, Windows port of the 2098 standalone testing tools (Kasimier and William), 2099 xmlSchemaValidateStream() xmlSchemaSAXPlug() and xmlSchemaSAXUnplug() SAX 2100 Schemas APIs, Schemas xmlReader support.</li> 2101 </ul> 2102 2103 <h3>2.6.19: Apr 02 2005</h3> 2104 <ul> 2105 <li>build fixes: drop .la from RPMs, --with-minimum build fix (William 2106 Brack), use XML_SOCKLEN_T instead of SOCKLEN_T because it breaks with AIX 2107 5.3 compiler, fixed elfgcchack.h generation and PLT reduction code on 2108 Linux/ELF/gcc4</li> 2109 <li>bug fixes: schemas type decimal fixups (William Brack), xmmlint return 2110 code (Gerry Murphy), small schemas fixes (Matthew Burgess and GUY 2111 Fabrice), workaround "DAV:" namespace brokeness in c14n (Aleksey Sanin), 2112 segfault in Schemas (Kasimier Buchcik), Schemas attribute validation 2113 (Kasimier), Prop related functions and xmlNewNodeEatName (Rob Richards), 2114 HTML serialization of name attribute on a elements, Python error handlers 2115 leaks and improvement (Brent Hendricks), uninitialized variable in 2116 encoding code, Relax-NG validation bug, potential crash if 2117 gnorableWhitespace is NULL, xmlSAXParseDoc and xmlParseDoc signatures, 2118 switched back to assuming UTF-8 in case no encoding is given at 2119 serialization time</li> 2120 <li>improvements: lot of work on Schemas by Kasimier Buchcik on facets 2121 checking and also mixed handling.</li> 2122 <li></li> 2123 </ul> 2124 2125 <h3>2.6.18: Mar 13 2005</h3> 2126 <ul> 2127 <li>build fixes: warnings (Peter Breitenlohner), testapi.c generation, 2128 Bakefile support (Francesco Montorsi), Windows compilation (Joel Reed), 2129 some gcc4 fixes, HP-UX portability fixes (Rick Jones).</li> 2130 <li>bug fixes: xmlSchemaElementDump namespace (Kasimier Buchcik), push and 2131 xmlreader stopping on non-fatal errors, thread support for dictionnaries 2132 reference counting (Gary Coady), internal subset and push problem, URL 2133 saved in xmlCopyDoc, various schemas bug fixes (Kasimier), Python paths 2134 fixup (Stephane Bidoul), xmlGetNodePath and namespaces, xmlSetNsProp fix 2135 (Mike Hommey), warning should not count as error (William Brack), 2136 xmlCreatePushParser empty chunk, XInclude parser flags (William), cleanup 2137 FTP and HTTP code to reuse the uri parsing and IPv6 (William), 2138 xmlTextWriterStartAttributeNS fix (Rob Richards), XMLLINT_INDENT being 2139 empty (William), xmlWriter bugs (Rob Richards), multithreading on Windows 2140 (Rich Salz), xmlSearchNsByHref fix (Kasimier), Python binding leak (Brent 2141 Hendricks), aliasing bug exposed by gcc4 on s390, xmlTextReaderNext bug 2142 (Rob Richards), Schemas decimal type fixes (William Brack), 2143 xmlByteConsumed static buffer (Ben Maurer).</li> 2144 <li>improvement: speedup parsing comments and DTDs, dictionary support for 2145 hash tables, Schemas Identity constraints (Kasimier), streaming XPath 2146 subset, xmlTextReaderReadString added (Bjorn Reese), Schemas canonical 2147 values handling (Kasimier), add xmlTextReaderByteConsumed (Aron 2148 Stansvik),</li> 2149 <li>Documentation: Wiki support (Joel Reed)</li> 2150 </ul> 2151 2152 <h3>2.6.17: Jan 16 2005</h3> 2153 <ul> 2154 <li>build fixes: Windows, warnings removal (William Brack), 2155 maintainer-clean dependency(William), build in a different directory 2156 (William), fixing --with-minimum configure build (William), BeOS build 2157 (Marcin Konicki), Python-2.4 detection (William), compilation on AIX (Dan 2158 McNichol)</li> 2159 <li>bug fixes: xmlTextReaderHasAttributes (Rob Richards), xmlCtxtReadFile() 2160 to use the catalog(s), loop on output (William Brack), XPath memory leak, 2161 ID deallocation problem (Steve Shepard), debugDumpNode crash (William), 2162 warning not using error callback (William), xmlStopParser bug (William), 2163 UTF-16 with BOM on DTDs (William), namespace bug on empty elements in 2164 push mode (Rob Richards), line and col computations fixups (Aleksey 2165 Sanin), xmlURIEscape fix (William), xmlXPathErr on bad range (William), 2166 patterns with too many steps, bug in RNG choice optimization, line number 2167 sometimes missing.</li> 2168 <li>improvements: XSD Schemas (Kasimier Buchcik), python generator 2169 (William), xmlUTF8Strpos speedup (William), unicode Python strings 2170 (William), XSD error reports (Kasimier Buchcik), Python __str__ call 2171 serialize().</li> 2172 <li>new APIs: added xmlDictExists(), GetLineNumber and GetColumnNumber for 2173 the xmlReader (Aleksey Sanin), Dynamic Shared Libraries APIs (mostly Joel 2174 Reed), error extraction API from regexps, new XMLSave option for format 2175 (Phil Shafer)</li> 2176 <li>documentation: site improvement (John Fleck), FAQ entries 2177 (William).</li> 2178 </ul> 2179 2180 <h3>2.6.16: Nov 10 2004</h3> 2181 <ul> 2182 <li>general hardening and bug fixing crossing all the API based on new 2183 automated regression testing</li> 2184 <li>build fix: IPv6 build and test on AIX (Dodji Seketeli)</li> 2185 <li>bug fixes: problem with XML::Libxml reported by Petr Pajas, encoding 2186 conversion functions return values, UTF-8 bug affecting XPath reported by 2187 Markus Bertheau, catalog problem with NULL entries (William Brack)</li> 2188 <li>documentation: fix to xmllint man page, some API function descritpion 2189 were updated.</li> 2190 <li>improvements: DTD validation APIs provided at the Python level (Brent 2191 Hendricks)</li> 2192 </ul> 2193 2194 <h3>2.6.15: Oct 27 2004</h3> 2195 <ul> 2196 <li>security fixes on the nanoftp and nanohttp modules</li> 2197 <li>build fixes: xmllint detection bug in configure, building outside the 2198 source tree (Thomas Fitzsimmons)</li> 2199 <li>bug fixes: HTML parser on broken ASCII chars in names (William), Python 2200 paths (Malcolm Tredinnick), xmlHasNsProp and default namespace (William), 2201 saving to python file objects (Malcolm Tredinnick), DTD lookup fix 2202 (Malcolm), save back <group> in catalogs (William), tree build 2203 fixes (DV and Rob Richards), Schemas memory bug, structured error handler 2204 on Python 64bits, thread local memory deallocation, memory leak reported 2205 by Volker Roth, xmlValidateDtd in the presence of an internal subset, 2206 entities and _private problem (William), xmlBuildRelativeURI error 2207 (William).</li> 2208 <li>improvements: better XInclude error reports (William), tree debugging 2209 module and tests, convenience functions at the Reader API (Graham 2210 Bennett), add support for PI in the HTML parser.</li> 2211 </ul> 2212 2213 <h3>2.6.14: Sep 29 2004</h3> 2214 <ul> 2215 <li>build fixes: configure paths for xmllint and xsltproc, compilation 2216 without HTML parser, compilation warning cleanups (William Brack & 2217 Malcolm Tredinnick), VMS makefile update (Craig Berry),</li> 2218 <li>bug fixes: xmlGetUTF8Char (William Brack), QName properties (Kasimier 2219 Buchcik), XInclude testing, Notation serialization, UTF8ToISO8859x 2220 transcoding (Mark Itzcovitz), lots of XML Schemas cleanup and fixes 2221 (Kasimier), ChangeLog cleanup (Stepan Kasal), memory fixes (Mark Vakoc), 2222 handling of failed realloc(), out of bound array adressing in Schemas 2223 date handling, Python space/tabs cleanups (Malcolm Tredinnick), NMTOKENS 2224 E20 validation fix (Malcolm),</li> 2225 <li>improvements: added W3C XML Schemas testsuite (Kasimier Buchcik), add 2226 xmlSchemaValidateOneElement (Kasimier), Python exception hierearchy 2227 (Malcolm Tredinnick), Python libxml2 driver improvement (Malcolm 2228 Tredinnick), Schemas support for xsi:schemaLocation, 2229 xsi:noNamespaceSchemaLocation, xsi:type (Kasimier Buchcik)</li> 2230 </ul> 2231 2232 <h3>2.6.13: Aug 31 2004</h3> 2233 <ul> 2234 <li>build fixes: Windows and zlib (Igor Zlatkovic), -O flag with gcc, 2235 Solaris compiler warning, fixing RPM BuildRequires,</li> 2236 <li>fixes: DTD loading on Windows (Igor), Schemas error reports APIs 2237 (Kasimier Buchcik), Schemas validation crash, xmlCheckUTF8 (William Brack 2238 and Julius Mittenzwei), Schemas facet check (Kasimier), default namespace 2239 problem (William), Schemas hexbinary empty values, encoding error could 2240 genrate a serialization loop.</li> 2241 <li>Improvements: Schemas validity improvements (Kasimier), added --path 2242 and --load-trace options to xmllint</li> 2243 <li>documentation: tutorial update (John Fleck)</li> 2244 </ul> 2245 2246 <h3>2.6.12: Aug 22 2004</h3> 2247 <ul> 2248 <li>build fixes: fix --with-minimum, elfgcchack.h fixes (Peter 2249 Breitenlohner), perl path lookup (William), diff on Solaris (Albert 2250 Chin), some 64bits cleanups.</li> 2251 <li>Python: avoid a warning with 2.3 (William Brack), tab and space mixes 2252 (William), wrapper generator fixes (William), Cygwin support (Gerrit P. 2253 Haase), node wrapper fix (Marc-Antoine Parent), XML Schemas support 2254 (Torkel Lyng)</li> 2255 <li>Schemas: a lot of bug fixes and improvements from Kasimier Buchcik</li> 2256 <li>fixes: RVT fixes (William), XPath context resets bug (William), memory 2257 debug (Steve Hay), catalog white space handling (Peter Breitenlohner), 2258 xmlReader state after attribute reading (William), structured error 2259 handler (William), XInclude generated xml:base fixup (William), Windows 2260 memory reallocation problem (Steve Hay), Out of Memory conditions 2261 handling (William and Olivier Andrieu), htmlNewDoc() charset bug, 2262 htmlReadMemory init (William), a posteriori validation DTD base 2263 (William), notations serialization missing, xmlGetNodePath (Dodji), 2264 xmlCheckUTF8 (Diego Tartara), missing line numbers on entity 2265 (William)</li> 2266 <li>improvements: DocBook catalog build scrip (William), xmlcatalog tool 2267 (Albert Chin), xmllint --c14n option, no_proxy environment (Mike Hommey), 2268 xmlParseInNodeContext() addition, extend xmllint --shell, allow XInclude 2269 to not generate start/end nodes, extend xmllint --version to include CVS 2270 tag (William)</li> 2271 <li>documentation: web pages fixes, validity API docs fixes (William) 2272 schemas API fix (Eric Haszlakiewicz), xmllint man page (John Fleck)</li> 2273 </ul> 2274 2275 <h3>2.6.11: July 5 2004</h3> 2276 <ul> 2277 <li>Schemas: a lot of changes and improvements by Kasimier Buchcik for 2278 attributes, namespaces and simple types.</li> 2279 <li>build fixes: --with-minimum (William Brack), some gcc cleanup 2280 (William), --with-thread-alloc (William)</li> 2281 <li>portability: Windows binary package change (Igor Zlatkovic), Catalog 2282 path on Windows</li> 2283 <li>documentation: update to the tutorial (John Fleck), xmllint return code 2284 (John Fleck), man pages (Ville Skytta),</li> 2285 <li>bug fixes: C14N bug serializing namespaces (Aleksey Sanin), testSAX 2286 properly initialize the library (William), empty node set in XPath 2287 (William), xmlSchemas errors (William), invalid charref problem pointed 2288 by Morus Walter, XInclude xml:base generation (William), Relax-NG bug 2289 with div processing (William), XPointer and xml:base problem(William), 2290 Reader and entities, xmllint return code for schemas (William), reader 2291 streaming problem (Steve Ball), DTD serialization problem (William), 2292 libxml.m4 fixes (Mike Hommey), do not provide destructors as methods on 2293 Python classes, xmlReader buffer bug, Python bindings memory interfaces 2294 improvement (with Stéphane Bidoul), Fixed the push parser to be back to 2295 synchronous behaviour.</li> 2296 <li>improvement: custom per-thread I/O enhancement (Rob Richards), register 2297 namespace in debug shell (Stefano Debenedetti), Python based regression 2298 test for non-Unix users (William), dynamically increase the number of 2299 XPath extension functions in Python and fix a memory leak (Marc-Antoine 2300 Parent and William)</li> 2301 <li>performance: hack done with Arjan van de Ven to reduce ELF footprint 2302 and generated code on Linux, plus use gcc runtime profiling to optimize 2303 the code generated in the RPM packages.</li> 2304 </ul> 2305 2306 <h3>2.6.10: May 17 2004</h3> 2307 <ul> 2308 <li>Web page generated for ChangeLog</li> 2309 <li>build fixes: --without-html problems, make check without make all</li> 2310 <li>portability: problem with xpath.c on Windows (MSC and Borland), memcmp 2311 vs. strncmp on Solaris, XPath tests on Windows (Mark Vakoc), C++ do not 2312 use "list" as parameter name, make tests work with Python 1.5 (Ed 2313 Davis),</li> 2314 <li>improvements: made xmlTextReaderMode public, small buffers resizing 2315 (Morten Welinder), add --maxmem option to xmllint, add 2316 xmlPopInputCallback() for Matt Sergeant, refactoring of serialization 2317 escaping, added escaping customization</li> 2318 <li>bugfixes: xsd:extension (Taihei Goi), assorted regexp bugs (William 2319 Brack), xmlReader end of stream problem, node deregistration with reader, 2320 URI escaping and filemanes, XHTML1 formatting (Nick Wellnhofer), regexp 2321 transition reduction (William), various XSD Schemas fixes (Kasimier 2322 Buchcik), XInclude fallback problem (William), weird problems with DTD 2323 (William), structured error handler callback context (William), reverse 2324 xmlEncodeSpecialChars() behaviour back to escaping '"'</li> 2325 </ul> 2326 2327 <h3>2.6.9: Apr 18 2004</h3> 2328 <ul> 2329 <li>implement xml:id Working Draft, relaxed XPath id() checking</li> 2330 <li>bugfixes: xmlCtxtReset (Brent Hendricks), line number and CDATA (Dave 2331 Beckett), Relax-NG compilation (William Brack), Regexp patches (with 2332 William), xmlUriEscape (Mark Vakoc), a Relax-NG notAllowed problem (with 2333 William), Relax-NG name classes compares (William), XInclude duplicate 2334 fallback (William), external DTD encoding detection (William), a DTD 2335 validation bug (William), xmlReader Close() fix, recusive extention 2336 schemas</li> 2337 <li>improvements: use xmlRead* APIs in test tools (Mark Vakoc), indenting 2338 save optimization, better handle IIS broken HTTP redirect behaviour (Ian 2339 Hummel), HTML parser frameset (James Bursa), libxml2-python RPM 2340 dependancy, XML Schemas union support (Kasimier Buchcik), warning removal 2341 clanup (William), keep ChangeLog compressed when installing from RPMs</li> 2342 <li>documentation: examples and xmlDocDumpMemory docs (John Fleck), new 2343 example (load, xpath, modify, save), xmlCatalogDump() comments,</li> 2344 <li>Windows: Borland C++ builder (Eric Zurcher), work around Microsoft 2345 compiler NaN handling bug (Mark Vakoc)</li> 2346 </ul> 2347 2348 <h3>2.6.8: Mar 23 2004</h3> 2349 <ul> 2350 <li>First step of the cleanup of the serialization code and APIs</li> 2351 <li>XML Schemas: mixed content (Adam Dickmeiss), QName handling fixes (Adam 2352 Dickmeiss), anyURI for "" (John Belmonte)</li> 2353 <li>Python: Canonicalization C14N support added (Anthony Carrico)</li> 2354 <li>xmlDocCopyNode() extension (William)</li> 2355 <li>Relax-NG: fix when processing XInclude results (William), external 2356 reference in interleave (William), missing error on <choice> 2357 failure (William), memory leak in schemas datatype facets.</li> 2358 <li>xmlWriter: patch for better DTD support (Alfred Mickautsch)</li> 2359 <li>bug fixes: xmlXPathLangFunction memory leak (Mike Hommey and William 2360 Brack), no ID errors if using HTML_PARSE_NOERROR, xmlcatalog fallbacks to 2361 URI on SYSTEM lookup failure, XInclude parse flags inheritance (William), 2362 XInclude and XPointer fixes for entities (William), XML parser bug 2363 reported by Holger Rauch, nanohttp fd leak (William), regexps char 2364 groups '-' handling (William), dictionary reference counting problems, 2365 do not close stderr.</li> 2366 <li>performance patches from Petr Pajas</li> 2367 <li>Documentation fixes: XML_CATALOG_FILES in man pages (Mike Hommey)</li> 2368 <li>compilation and portability fixes: --without-valid, catalog cleanups 2369 (Peter Breitenlohner), MingW patch (Roland Schwingel), cross-compilation 2370 to Windows (Christophe de Vienne), --with-html-dir fixup (Julio Merino 2371 Vidal), Windows build (Eric Zurcher)</li> 2372 </ul> 2373 2374 <h3>2.6.7: Feb 23 2004</h3> 2375 <ul> 2376 <li>documentation: tutorial updates (John Fleck), benchmark results</li> 2377 <li>xmlWriter: updates and fixes (Alfred Mickautsch, Lucas Brasilino)</li> 2378 <li>XPath optimization (Petr Pajas)</li> 2379 <li>DTD ID handling optimization</li> 2380 <li>bugfixes: xpath number with > 19 fractional (William Brack), push 2381 mode with unescaped '>' characters, fix xmllint --stream --timing, fix 2382 xmllint --memory --stream memory usage, xmlAttrSerializeTxtContent 2383 handling NULL, trying to fix Relax-NG/Perl interface.</li> 2384 <li>python: 2.3 compatibility, whitespace fixes (Malcolm Tredinnick)</li> 2385 <li>Added relaxng option to xmllint --shell</li> 2386 </ul> 2387 2388 <h3>2.6.6: Feb 12 2004</h3> 2389 <ul> 2390 <li>nanohttp and nanoftp: buffer overflow error on URI parsing (Igor and 2391 William) reported by Yuuichi Teranishi</li> 2392 <li>bugfixes: make test and path issues, xmlWriter attribute serialization 2393 (William Brack), xmlWriter indentation (William), schemas validation 2394 (Eric Haszlakiewicz), XInclude dictionnaries issues (William and Oleg 2395 Paraschenko), XInclude empty fallback (William), HTML warnings (William), 2396 XPointer in XInclude (William), Python namespace serialization, 2397 isolat1ToUTF8 bound error (Alfred Mickautsch), output of parameter 2398 entities in internal subset (William), internal subset bug in push mode, 2399 <xs:all> fix (Alexey Sarytchev)</li> 2400 <li>Build: fix for automake-1.8 (Alexander Winston), warnings removal 2401 (Philip Ludlam), SOCKLEN_T detection fixes (Daniel Richard), fix 2402 --with-minimum configuration.</li> 2403 <li>XInclude: allow the 2001 namespace without warning.</li> 2404 <li>Documentation: missing example/index.html (John Fleck), version 2405 dependancies (John Fleck)</li> 2406 <li>reader API: structured error reporting (Steve Ball)</li> 2407 <li>Windows compilation: mingw, msys (Mikhail Grushinskiy), function 2408 prototype (Cameron Johnson), MSVC6 compiler warnings, _WINSOCKAPI_ 2409 patch</li> 2410 <li>Parsers: added xmlByteConsumed(ctxt) API to get the byte offest in 2411 input.</li> 2412 </ul> 2413 2414 <h3>2.6.5: Jan 25 2004</h3> 2415 <ul> 2416 <li>Bugfixes: dictionnaries for schemas (William Brack), regexp segfault 2417 (William), xs:all problem (William), a number of XPointer bugfixes 2418 (William), xmllint error go to stderr, DTD validation problem with 2419 namespace, memory leak (William), SAX1 cleanup and minimal options fixes 2420 (Mark Vadoc), parser context reset on error (Shaun McCance), XPath union 2421 evaluation problem (William) , xmlReallocLoc with NULL (Aleksey Sanin), 2422 XML Schemas double free (Steve Ball), XInclude with no href, argument 2423 callbacks order for XPath callbacks (Frederic Peters)</li> 2424 <li>Documentation: python scripts (William Brack), xslt stylesheets (John 2425 Fleck), doc (Sven Zimmerman), I/O example.</li> 2426 <li>Python bindings: fixes (William), enum support (Stéphane Bidoul), 2427 structured error reporting (Stéphane Bidoul)</li> 2428 <li>XInclude: various fixes for conformance, problem related to dictionary 2429 references (William & me), recursion (William)</li> 2430 <li>xmlWriter: indentation (Lucas Brasilino), memory leaks (Alfred 2431 Mickautsch),</li> 2432 <li>xmlSchemas: normalizedString datatype (John Belmonte)</li> 2433 <li>code cleanup for strings functions (William)</li> 2434 <li>Windows: compiler patches (Mark Vakoc)</li> 2435 <li>Parser optimizations, a few new XPath and dictionary APIs for future 2436 XSLT optimizations.</li> 2437 </ul> 2438 2439 <h3>2.6.4: Dec 24 2003</h3> 2440 <ul> 2441 <li>Windows build fixes (Igor Zlatkovic)</li> 2442 <li>Some serious XInclude problems reported by Oleg Paraschenko and</li> 2443 <li>Unix and Makefile packaging fixes (me, William Brack,</li> 2444 <li>Documentation improvements (John Fleck, William Brack), example fix 2445 (Lucas Brasilino)</li> 2446 <li>bugfixes: xmlTextReaderExpand() with xmlReaderWalker, XPath handling of 2447 NULL strings (William Brack) , API building reader or parser from 2448 filedescriptor should not close it, changed XPath sorting to be stable 2449 again (William Brack), xmlGetNodePath() generating '(null)' (William 2450 Brack), DTD validation and namespace bug (William Brack), XML Schemas 2451 double inclusion behaviour</li> 2452 </ul> 2453 2454 <h3>2.6.3: Dec 10 2003</h3> 2455 <ul> 2456 <li>documentation updates and cleanup (DV, William Brack, John Fleck)</li> 2457 <li>added a repository of examples, examples from Aleksey Sanin, Dodji 2458 Seketeli, Alfred Mickautsch</li> 2459 <li>Windows updates: Mark Vakoc, Igor Zlatkovic, Eric Zurcher, Mingw 2460 (Kenneth Haley)</li> 2461 <li>Unicode range checking (William Brack)</li> 2462 <li>code cleanup (William Brack)</li> 2463 <li>Python bindings: doc (John Fleck), bug fixes</li> 2464 <li>UTF-16 cleanup and BOM issues (William Brack)</li> 2465 <li>bug fixes: ID and xmlReader validation, XPath (William Brack), 2466 xmlWriter (Alfred Mickautsch), hash.h inclusion problem, HTML parser 2467 (James Bursa), attribute defaulting and validation, some serialization 2468 cleanups, XML_GET_LINE macro, memory debug when using threads (William 2469 Brack), serialization of attributes and entities content, xmlWriter 2470 (Daniel Schulman)</li> 2471 <li>XInclude bugfix, new APIs and update to the last version including the 2472 namespace change.</li> 2473 <li>XML Schemas improvements: include (Robert Stepanek), import and 2474 namespace handling, fixed the regression tests troubles, added examples 2475 based on Eric van der Vlist book, regexp fixes</li> 2476 <li>preliminary pattern support for streaming (needed for schemas 2477 constraints), added xmlTextReaderPreservePattern() to collect subdocument 2478 when streaming.</li> 2479 <li>various fixes in the structured error handling</li> 2480 </ul> 2481 2482 <h3>2.6.2: Nov 4 2003</h3> 2483 <ul> 2484 <li>XPath context unregistration fixes</li> 2485 <li>text node coalescing fixes (Mark Lilback)</li> 2486 <li>API to screate a W3C Schemas from an existing document (Steve Ball)</li> 2487 <li>BeOS patches (Marcin 'Shard' Konicki)</li> 2488 <li>xmlStrVPrintf function added (Aleksey Sanin)</li> 2489 <li>compilation fixes (Mark Vakoc)</li> 2490 <li>stdin parsing fix (William Brack)</li> 2491 <li>a posteriori DTD validation fixes</li> 2492 <li>xmlReader bug fixes: Walker fixes, python bindings</li> 2493 <li>fixed xmlStopParser() to really stop the parser and errors</li> 2494 <li>always generate line numbers when using the new xmlReadxxx 2495 functions</li> 2496 <li>added XInclude support to the xmlReader interface</li> 2497 <li>implemented XML_PARSE_NONET parser option</li> 2498 <li>DocBook XSLT processing bug fixed</li> 2499 <li>HTML serialization for <p> elements (William Brack and me)</li> 2500 <li>XPointer failure in XInclude are now handled as resource errors</li> 2501 <li>fixed xmllint --html to use the HTML serializer on output (added 2502 --xmlout to implement the previous behaviour of saving it using the XML 2503 serializer)</li> 2504 </ul> 2505 2506 <h3>2.6.1: Oct 28 2003</h3> 2507 <ul> 2508 <li>Mostly bugfixes after the big 2.6.0 changes</li> 2509 <li>Unix compilation patches: libxml.m4 (Patrick Welche), warnings cleanup 2510 (William Brack)</li> 2511 <li>Windows compilation patches (Joachim Bauch, Stephane Bidoul, Igor 2512 Zlatkovic)</li> 2513 <li>xmlWriter bugfix (Alfred Mickautsch)</li> 2514 <li>chvalid.[ch]: couple of fixes from Stephane Bidoul</li> 2515 <li>context reset: error state reset, push parser reset (Graham 2516 Bennett)</li> 2517 <li>context reuse: generate errors if file is not readable</li> 2518 <li>defaulted attributes for element coming from internal entities 2519 (Stephane Bidoul)</li> 2520 <li>Python: tab and spaces mix (William Brack)</li> 2521 <li>Error handler could crash in DTD validation in 2.6.0</li> 2522 <li>xmlReader: do not use the document or element _private field</li> 2523 <li>testSAX.c: avoid a problem with some PIs (Massimo Morara)</li> 2524 <li>general bug fixes: mandatory encoding in text decl, serializing 2525 Document Fragment nodes, xmlSearchNs 2.6.0 problem (Kasimier Buchcik), 2526 XPath errors not reported, slow HTML parsing of large documents.</li> 2527 </ul> 2528 2529 <h3>2.6.0: Oct 20 2003</h3> 2530 <ul> 2531 <li>Major revision release: should be API and ABI compatible but got a lot 2532 of change</li> 2533 <li>Increased the library modularity, far more options can be stripped out, 2534 a --with-minimum configuration will weight around 160KBytes</li> 2535 <li>Use per parser and per document dictionary, allocate names and small 2536 text nodes from the dictionary</li> 2537 <li>Switch to a SAX2 like parser rewrote most of the XML parser core, 2538 provides namespace resolution and defaulted attributes, minimize memory 2539 allocations and copies, namespace checking and specific error handling, 2540 immutable buffers, make predefined entities static structures, etc...</li> 2541 <li>rewrote all the error handling in the library, all errors can be 2542 intercepted at a structured level, with precise information 2543 available.</li> 2544 <li>New simpler and more generic XML and HTML parser APIs, allowing to 2545 easilly modify the parsing options and reuse parser context for multiple 2546 consecutive documents.</li> 2547 <li>Similar new APIs for the xmlReader, for options and reuse, provided new 2548 functions to access content as const strings, use them for Python 2549 bindings</li> 2550 <li>a lot of other smaller API improvements: xmlStrPrintf (Aleksey Sanin), 2551 Walker i.e. reader on a document tree based on Alfred Mickautsch code, 2552 make room in nodes for line numbers, reference counting and future PSVI 2553 extensions, generation of character ranges to be checked with faster 2554 algorithm (William), xmlParserMaxDepth (Crutcher Dunnavant), buffer 2555 access</li> 2556 <li>New xmlWriter API provided by Alfred Mickautsch</li> 2557 <li>Schemas: base64 support by Anthony Carrico</li> 2558 <li>Parser<->HTTP integration fix, proper processing of the Mime-Type 2559 and charset information if available.</li> 2560 <li>Relax-NG: bug fixes including the one reported by Martijn Faassen and 2561 zeroOrMore, better error reporting.</li> 2562 <li>Python bindings (Stéphane Bidoul), never use stdout for errors 2563 output</li> 2564 <li>Portability: all the headers have macros for export and calling 2565 convention definitions (Igor Zlatkovic), VMS update (Craig A. Berry), 2566 Windows: threads (Jesse Pelton), Borland compiler (Eric Zurcher, Igor), 2567 Mingw (Igor), typos (Mark Vakoc), beta version (Stephane Bidoul), 2568 warning cleanups on AIX and MIPS compilers (William Brack), BeOS (Marcin 2569 'Shard' Konicki)</li> 2570 <li>Documentation fixes and README (William Brack), search fix (William), 2571 tutorial updates (John Fleck), namespace docs (Stefan Kost)</li> 2572 <li>Bug fixes: xmlCleanupParser (Dave Beckett), threading uninitialized 2573 mutexes, HTML doctype lowercase, SAX/IO (William), compression detection 2574 and restore (William), attribute declaration in DTDs (William), namespace 2575 on attribute in HTML output (William), input filename (Rob Richards), 2576 namespace DTD validation, xmlReplaceNode (Chris Ryland), I/O callbacks 2577 (Markus Keim), CDATA serialization (Shaun McCance), xmlReader (Peter 2578 Derr), high codepoint charref like &#x10FFFF;, buffer access in push 2579 mode (Justin Fletcher), TLS threads on Windows (Jesse Pelton), XPath bug 2580 (William), xmlCleanupParser (Marc Liyanage), CDATA output (William), HTTP 2581 error handling.</li> 2582 <li>xmllint options: --dtdvalidfpi for Tobias Reif, --sax1 for compat 2583 testing, --nodict for building without tree dictionary, --nocdata to 2584 replace CDATA by text, --nsclean to remove surperfluous namespace 2585 declarations</li> 2586 <li>added xml2-config --libtool-libs option from Kevin P. Fleming</li> 2587 <li>a lot of profiling and tuning of the code, speedup patch for 2588 xmlSearchNs() by Luca Padovani. The xmlReader should do far less 2589 allocation and it speed should get closer to SAX. Chris Anderson worked 2590 on speeding and cleaning up repetitive checking code.</li> 2591 <li>cleanup of "make tests"</li> 2592 <li>libxml-2.0-uninstalled.pc from Malcolm Tredinnick</li> 2593 <li>deactivated the broken docBook SGML parser code and plugged the XML 2594 parser instead.</li> 2595 </ul> 2596 2597 <h3>2.5.11: Sep 9 2003</h3> 2598 2599 <p>A bugfix only release:</p> 2600 <ul> 2601 <li>risk of crash in Relax-NG</li> 2602 <li>risk of crash when using multithreaded programs</li> 2603 </ul> 2604 2605 <h3>2.5.10: Aug 15 2003</h3> 2606 2607 <p>A bugfixes only release</p> 2608 <ul> 2609 <li>Windows Makefiles (William Brack)</li> 2610 <li>UTF-16 support fixes (Mark Itzcovitz)</li> 2611 <li>Makefile and portability (William Brack) automake, Linux alpha, Mingw 2612 on Windows (Mikhail Grushinskiy)</li> 2613 <li>HTML parser (Oliver Stoeneberg)</li> 2614 <li>XInclude performance problem reported by Kevin Ruscoe</li> 2615 <li>XML parser performance problem reported by Grant Goodale</li> 2616 <li>xmlSAXParseDTD() bug fix from Malcolm Tredinnick</li> 2617 <li>and a couple other cleanup</li> 2618 </ul> 2619 2620 <h3>2.5.9: Aug 9 2003</h3> 2621 <ul> 2622 <li>bugfixes: IPv6 portability, xmlHasNsProp (Markus Keim), Windows build 2623 (Wiliam Brake, Jesse Pelton, Igor), Schemas (Peter Sobisch), threading 2624 (Rob Richards), hexBinary type (), UTF-16 BOM (Dodji Seketeli), 2625 xmlReader, Relax-NG schemas compilation, namespace handling, EXSLT (Sean 2626 Griffin), HTML parsing problem (William Brack), DTD validation for mixed 2627 content + namespaces, HTML serialization, library initialization, 2628 progressive HTML parser</li> 2629 <li>better interfaces for Relax-NG error handling (Joachim Bauch, )</li> 2630 <li>adding xmlXIncludeProcessTree() for XInclud'ing in a subtree</li> 2631 <li>doc fixes and improvements (John Fleck)</li> 2632 <li>configure flag for -with-fexceptions when embedding in C++</li> 2633 <li>couple of new UTF-8 helper functions (William Brack)</li> 2634 <li>general encoding cleanup + ISO-8859-x without iconv (Peter Jacobi)</li> 2635 <li>xmlTextReader cleanup + enum for node types (Bjorn Reese)</li> 2636 <li>general compilation/warning cleanup Solaris/HP-UX/... (William 2637 Brack)</li> 2638 </ul> 2639 2640 <h3>2.5.8: Jul 6 2003</h3> 2641 <ul> 2642 <li>bugfixes: XPath, XInclude, file/URI mapping, UTF-16 save (Mark 2643 Itzcovitz), UTF-8 checking, URI saving, error printing (William Brack), 2644 PI related memleak, compilation without schemas or without xpath (Joerg 2645 Schmitz-Linneweber/Garry Pennington), xmlUnlinkNode problem with DTDs, 2646 rpm problem on , i86_64, removed a few compilation problems from 2.5.7, 2647 xmlIOParseDTD, and xmlSAXParseDTD (Malcolm Tredinnick)</li> 2648 <li>portability: DJGPP (MsDos) , OpenVMS (Craig A. Berry)</li> 2649 <li>William Brack fixed multithreading lock problems</li> 2650 <li>IPv6 patch for FTP and HTTP accesses (Archana Shah/Wipro)</li> 2651 <li>Windows fixes (Igor Zlatkovic, Eric Zurcher), threading (Stéphane 2652 Bidoul)</li> 2653 <li>A few W3C Schemas Structure improvements</li> 2654 <li>W3C Schemas Datatype improvements (Charlie Bozeman)</li> 2655 <li>Python bindings for thread globals (Stéphane Bidoul), and method/class 2656 generator</li> 2657 <li>added --nonet option to xmllint</li> 2658 <li>documentation improvements (John Fleck)</li> 2659 </ul> 2660 2661 <h3>2.5.7: Apr 25 2003</h3> 2662 <ul> 2663 <li>Relax-NG: Compiling to regexp and streaming validation on top of the 2664 xmlReader interface, added to xmllint --stream</li> 2665 <li>xmlReader: Expand(), Next() and DOM access glue, bug fixes</li> 2666 <li>Support for large files: RGN validated a 4.5GB instance</li> 2667 <li>Thread support is now configured in by default</li> 2668 <li>Fixes: update of the Trio code (Bjorn), WXS Date and Duration fixes 2669 (Charles Bozeman), DTD and namespaces (Brent Hendricks), HTML push parser 2670 and zero bytes handling, some missing Windows file path conversions, 2671 behaviour of the parser and validator in the presence of "out of memory" 2672 error conditions</li> 2673 <li>extended the API to be able to plug a garbage collecting memory 2674 allocator, added xmlMallocAtomic() and modified the allocations 2675 accordingly.</li> 2676 <li>Performances: removed excessive malloc() calls, speedup of the push and 2677 xmlReader interfaces, removed excessive thread locking</li> 2678 <li>Documentation: man page (John Fleck), xmlReader documentation</li> 2679 <li>Python: adding binding for xmlCatalogAddLocal (Brent M Hendricks)</li> 2680 </ul> 2681 2682 <h3>2.5.6: Apr 1 2003</h3> 2683 <ul> 2684 <li>Fixed W3C XML Schemas datatype, should be compliant now except for 2685 binHex and base64 which are not supported yet.</li> 2686 <li>bug fixes: non-ASCII IDs, HTML output, XInclude on large docs and 2687 XInclude entities handling, encoding detection on external subsets, XML 2688 Schemas bugs and memory leaks, HTML parser (James Bursa)</li> 2689 <li>portability: python/trio (Albert Chin), Sun compiler warnings</li> 2690 <li>documentation: added --relaxng option to xmllint man page (John)</li> 2691 <li>improved error reporting: xml:space, start/end tag mismatches, Relax NG 2692 errors</li> 2693 </ul> 2694 2695 <h3>2.5.5: Mar 24 2003</h3> 2696 <ul> 2697 <li>Lot of fixes on the Relax NG implementation. More testing including 2698 DocBook and TEI examples.</li> 2699 <li>Increased the support for W3C XML Schemas datatype</li> 2700 <li>Several bug fixes in the URI handling layer</li> 2701 <li>Bug fixes: HTML parser, xmlReader, DTD validation, XPath, encoding 2702 conversion, line counting in the parser.</li> 2703 <li>Added support for $XMLLINT_INDENT environment variable, FTP delete</li> 2704 <li>Fixed the RPM spec file name</li> 2705 </ul> 2706 2707 <h3>2.5.4: Feb 20 2003</h3> 2708 <ul> 2709 <li>Conformance testing and lot of fixes on Relax NG and XInclude 2710 implementation</li> 2711 <li>Implementation of XPointer element() scheme</li> 2712 <li>Bug fixes: XML parser, XInclude entities merge, validity checking on 2713 namespaces, 2714 <p>2 serialization bugs, node info generation problems, a DTD regexp 2715 generation problem.</p> 2716 </li> 2717 <li>Portability: windows updates and path canonicalization (Igor)</li> 2718 <li>A few typo fixes (Kjartan Maraas)</li> 2719 <li>Python bindings generator fixes (Stephane Bidoul)</li> 2720 </ul> 2721 2722 <h3>2.5.3: Feb 10 2003</h3> 2723 <ul> 2724 <li>RelaxNG and XML Schemas datatypes improvements, and added a first 2725 version of RelaxNG Python bindings</li> 2726 <li>Fixes: XLink (Sean Chittenden), XInclude (Sean Chittenden), API fix for 2727 serializing namespace nodes, encoding conversion bug, XHTML1 2728 serialization</li> 2729 <li>Portability fixes: Windows (Igor), AMD 64bits RPM spec file</li> 2730 </ul> 2731 2732 <h3>2.5.2: Feb 5 2003</h3> 2733 <ul> 2734 <li>First implementation of RelaxNG, added --relaxng flag to xmllint</li> 2735 <li>Schemas support now compiled in by default.</li> 2736 <li>Bug fixes: DTD validation, namespace checking, XInclude and entities, 2737 delegateURI in XML Catalogs, HTML parser, XML reader (Stéphane Bidoul), 2738 XPath parser and evaluation, UTF8ToUTF8 serialization, XML reader memory 2739 consumption, HTML parser, HTML serialization in the presence of 2740 namespaces</li> 2741 <li>added an HTML API to check elements and attributes.</li> 2742 <li>Documentation improvement, PDF for the tutorial (John Fleck), doc 2743 patches (Stefan Kost)</li> 2744 <li>Portability fixes: NetBSD (Julio Merino), Windows (Igor Zlatkovic)</li> 2745 <li>Added python bindings for XPointer, contextual error reporting 2746 (Stéphane Bidoul)</li> 2747 <li>URI/file escaping problems (Stefano Zacchiroli)</li> 2748 </ul> 2749 2750 <h3>2.5.1: Jan 8 2003</h3> 2751 <ul> 2752 <li>Fixes a memory leak and configuration/compilation problems in 2.5.0</li> 2753 <li>documentation updates (John)</li> 2754 <li>a couple of XmlTextReader fixes</li> 2755 </ul> 2756 2757 <h3>2.5.0: Jan 6 2003</h3> 2758 <ul> 2759 <li>New <a href="xmlreader.html">XmltextReader interface</a> based on C# 2760 API (with help of Stéphane Bidoul)</li> 2761 <li>Windows: more exports, including the new API (Igor)</li> 2762 <li>XInclude fallback fix</li> 2763 <li>Python: bindings for the new API, packaging (Stéphane Bidoul), 2764 drv_libxml2.py Python xml.sax driver (Stéphane Bidoul), fixes, speedup 2765 and iterators for Python-2.2 (Hannu Krosing)</li> 2766 <li>Tutorial fixes (john Fleck and Niraj Tolia) xmllint man update 2767 (John)</li> 2768 <li>Fix an XML parser bug raised by Vyacheslav Pindyura</li> 2769 <li>Fix for VMS serialization (Nigel Hall) and config (Craig A. Berry)</li> 2770 <li>Entities handling fixes</li> 2771 <li>new API to optionally track node creation and deletion (Lukas 2772 Schroeder)</li> 2773 <li>Added documentation for the XmltextReader interface and some <a 2774 href="guidelines.html">XML guidelines</a></li> 2775 </ul> 2776 2777 <h3>2.4.30: Dec 12 2002</h3> 2778 <ul> 2779 <li>2.4.29 broke the python bindings, rereleasing</li> 2780 <li>Improvement/fixes of the XML API generator, and couple of minor code 2781 fixes.</li> 2782 </ul> 2783 2784 <h3>2.4.29: Dec 11 2002</h3> 2785 <ul> 2786 <li>Windows fixes (Igor): Windows CE port, pthread linking, python bindings 2787 (Stéphane Bidoul), Mingw (Magnus Henoch), and export list updates</li> 2788 <li>Fix for prev in python bindings (ERDI Gergo)</li> 2789 <li>Fix for entities handling (Marcus Clarke)</li> 2790 <li>Refactored the XML and HTML dumps to a single code path, fixed XHTML1 2791 dump</li> 2792 <li>Fix for URI parsing when handling URNs with fragment identifiers</li> 2793 <li>Fix for HTTP URL escaping problem</li> 2794 <li>added an TextXmlReader (C#) like API (work in progress)</li> 2795 <li>Rewrote the API in XML generation script, includes a C parser and saves 2796 more information needed for C# bindings</li> 2797 </ul> 2798 2799 <h3>2.4.28: Nov 22 2002</h3> 2800 <ul> 2801 <li>a couple of python binding fixes</li> 2802 <li>2 bug fixes in the XML push parser</li> 2803 <li>potential memory leak removed (Martin Stoilov)</li> 2804 <li>fix to the configure script for Unix (Dimitri Papadopoulos)</li> 2805 <li>added encoding support for XInclude parse="text"</li> 2806 <li>autodetection of XHTML1 and specific serialization rules added</li> 2807 <li>nasty threading bug fixed (William Brack)</li> 2808 </ul> 2809 2810 <h3>2.4.27: Nov 17 2002</h3> 2811 <ul> 2812 <li>fixes for the Python bindings</li> 2813 <li>a number of bug fixes: SGML catalogs, xmlParseBalancedChunkMemory(), 2814 HTML parser, Schemas (Charles Bozeman), document fragment support 2815 (Christian Glahn), xmlReconciliateNs (Brian Stafford), XPointer, 2816 xmlFreeNode(), xmlSAXParseMemory (Peter Jones), xmlGetNodePath (Petr 2817 Pajas), entities processing</li> 2818 <li>added grep to xmllint --shell</li> 2819 <li>VMS update patch from Craig A. Berry</li> 2820 <li>cleanup of the Windows build with support for more compilers (Igor), 2821 better thread support on Windows</li> 2822 <li>cleanup of Unix Makefiles and spec file</li> 2823 <li>Improvements to the documentation (John Fleck)</li> 2824 </ul> 2825 2826 <h3>2.4.26: Oct 18 2002</h3> 2827 <ul> 2828 <li>Patches for Windows CE port, improvements on Windows paths handling</li> 2829 <li>Fixes to the validation code (DTD and Schemas), xmlNodeGetPath() , 2830 HTML serialization, Namespace compliance, and a number of small 2831 problems</li> 2832 </ul> 2833 2834 <h3>2.4.25: Sep 26 2002</h3> 2835 <ul> 2836 <li>A number of bug fixes: XPath, validation, Python bindings, DOM and 2837 tree, xmlI/O, Html</li> 2838 <li>Serious rewrite of XInclude</li> 2839 <li>Made XML Schemas regexp part of the default build and APIs, small fix 2840 and improvement of the regexp core</li> 2841 <li>Changed the validation code to reuse XML Schemas regexp APIs</li> 2842 <li>Better handling of Windows file paths, improvement of Makefiles (Igor, 2843 Daniel Gehriger, Mark Vakoc)</li> 2844 <li>Improved the python I/O bindings, the tests, added resolver and regexp 2845 APIs</li> 2846 <li>New logos from Marc Liyanage</li> 2847 <li>Tutorial improvements: John Fleck, Christopher Harris</li> 2848 <li>Makefile: Fixes for AMD x86_64 (Mandrake), DESTDIR (Christophe 2849 Merlet)</li> 2850 <li>removal of all stderr/perror use for error reporting</li> 2851 <li>Better error reporting: XPath and DTD validation</li> 2852 <li>update of the trio portability layer (Bjorn Reese)</li> 2853 </ul> 2854 2855 <p><strong>2.4.24: Aug 22 2002</strong></p> 2856 <ul> 2857 <li>XPath fixes (William), xf:escape-uri() (Wesley Terpstra)</li> 2858 <li>Python binding fixes: makefiles (William), generator, rpm build, x86-64 2859 (fcrozat)</li> 2860 <li>HTML <style> and boolean attributes serializer fixes</li> 2861 <li>C14N improvements by Aleksey</li> 2862 <li>doc cleanups: Rick Jones</li> 2863 <li>Windows compiler makefile updates: Igor and Elizabeth Barham</li> 2864 <li>XInclude: implementation of fallback and xml:base fixup added</li> 2865 </ul> 2866 2867 <h3>2.4.23: July 6 2002</h3> 2868 <ul> 2869 <li>performances patches: Peter Jacobi</li> 2870 <li>c14n fixes, testsuite and performances: Aleksey Sanin</li> 2871 <li>added xmlDocFormatDump: Chema Celorio</li> 2872 <li>new tutorial: John Fleck</li> 2873 <li>new hash functions and performances: Sander Vesik, portability fix from 2874 Peter Jacobi</li> 2875 <li>a number of bug fixes: XPath (William Brack, Richard Jinks), XML and 2876 HTML parsers, ID lookup function</li> 2877 <li>removal of all remaining sprintf: Aleksey Sanin</li> 2878 </ul> 2879 2880 <h3>2.4.22: May 27 2002</h3> 2881 <ul> 2882 <li>a number of bug fixes: configure scripts, base handling, parser, memory 2883 usage, HTML parser, XPath, documentation (Christian Cornelssen), 2884 indentation, URI parsing</li> 2885 <li>Optimizations for XMLSec, fixing and making public some of the network 2886 protocol handlers (Aleksey)</li> 2887 <li>performance patch from Gary Pennington</li> 2888 <li>Charles Bozeman provided date and time support for XML Schemas 2889 datatypes</li> 2890 </ul> 2891 2892 <h3>2.4.21: Apr 29 2002</h3> 2893 2894 <p>This release is both a bug fix release and also contains the early XML 2895 Schemas <a href="http://www.w3.org/TR/xmlschema-1/">structures</a> and <a 2896 href="http://www.w3.org/TR/xmlschema-2/">datatypes</a> code, beware, all 2897 interfaces are likely to change, there is huge holes, it is clearly a work in 2898 progress and don't even think of putting this code in a production system, 2899 it's actually not compiled in by default. The real fixes are: 2900 </p> 2901 2902 <ul> 2903 <li>a couple of bugs or limitations introduced in 2.4.20</li> 2904 <li>patches for Borland C++ and MSC by Igor</li> 2905 <li>some fixes on XPath strings and conformance patches by Richard 2906 Jinks</li> 2907 <li>patch from Aleksey for the ExcC14N specification</li> 2908 <li>OSF/1 bug fix by Bjorn</li> 2909 </ul> 2910 2911 <h3>2.4.20: Apr 15 2002</h3> 2912 <ul> 2913 <li>bug fixes: file descriptor leak, XPath, HTML output, DTD validation</li> 2914 <li>XPath conformance testing by Richard Jinks</li> 2915 <li>Portability fixes: Solaris, MPE/iX, Windows, OSF/1, python bindings, 2916 libxml.m4</li> 2917 </ul> 2918 2919 <h3>2.4.19: Mar 25 2002</h3> 2920 <ul> 2921 <li>bug fixes: half a dozen XPath bugs, Validation, ISO-Latin to UTF8 2922 encoder</li> 2923 <li>portability fixes in the HTTP code</li> 2924 <li>memory allocation checks using valgrind, and profiling tests</li> 2925 <li>revamp of the Windows build and Makefiles</li> 2926 </ul> 2927 2928 <h3>2.4.18: Mar 18 2002</h3> 2929 <ul> 2930 <li>bug fixes: tree, SAX, canonicalization, validation, portability, 2931 XPath</li> 2932 <li>removed the --with-buffer option it was becoming unmaintainable</li> 2933 <li>serious cleanup of the Python makefiles</li> 2934 <li>speedup patch to XPath very effective for DocBook stylesheets</li> 2935 <li>Fixes for Windows build, cleanup of the documentation</li> 2936 </ul> 2937 2938 <h3>2.4.17: Mar 8 2002</h3> 2939 <ul> 2940 <li>a lot of bug fixes, including "namespace nodes have no parents in 2941 XPath"</li> 2942 <li>fixed/improved the Python wrappers, added more examples and more 2943 regression tests, XPath extension functions can now return node-sets</li> 2944 <li>added the XML Canonicalization support from Aleksey Sanin</li> 2945 </ul> 2946 2947 <h3>2.4.16: Feb 20 2002</h3> 2948 <ul> 2949 <li>a lot of bug fixes, most of them were triggered by the XML Testsuite 2950 from OASIS and W3C. Compliance has been significantly improved.</li> 2951 <li>a couple of portability fixes too.</li> 2952 </ul> 2953 2954 <h3>2.4.15: Feb 11 2002</h3> 2955 <ul> 2956 <li>Fixed the Makefiles, especially the python module ones</li> 2957 <li>A few bug fixes and cleanup</li> 2958 <li>Includes cleanup</li> 2959 </ul> 2960 2961 <h3>2.4.14: Feb 8 2002</h3> 2962 <ul> 2963 <li>Change of License to the <a 2964 href="http://www.opensource.org/licenses/mit-license.html">MIT 2965 License</a> basically for integration in XFree86 codebase, and removing 2966 confusion around the previous dual-licensing</li> 2967 <li>added Python bindings, beta software but should already be quite 2968 complete</li> 2969 <li>a large number of fixes and cleanups, especially for all tree 2970 manipulations</li> 2971 <li>cleanup of the headers, generation of a reference API definition in 2972 XML</li> 2973 </ul> 2974 2975 <h3>2.4.13: Jan 14 2002</h3> 2976 <ul> 2977 <li>update of the documentation: John Fleck and Charlie Bozeman</li> 2978 <li>cleanup of timing code from Justin Fletcher</li> 2979 <li>fixes for Windows and initial thread support on Win32: Igor and Serguei 2980 Narojnyi</li> 2981 <li>Cygwin patch from Robert Collins</li> 2982 <li>added xmlSetEntityReferenceFunc() for Keith Isdale work on xsldbg</li> 2983 </ul> 2984 2985 <h3>2.4.12: Dec 7 2001</h3> 2986 <ul> 2987 <li>a few bug fixes: thread (Gary Pennington), xmllint (Geert Kloosterman), 2988 XML parser (Robin Berjon), XPointer (Danny Jamshy), I/O cleanups 2989 (robert)</li> 2990 <li>Eric Lavigne contributed project files for MacOS</li> 2991 <li>some makefiles cleanups</li> 2992 </ul> 2993 2994 <h3>2.4.11: Nov 26 2001</h3> 2995 <ul> 2996 <li>fixed a couple of errors in the includes, fixed a few bugs, some code 2997 cleanups</li> 2998 <li>xmllint man pages improvement by Heiko Rupp</li> 2999 <li>updated VMS build instructions from John A Fotheringham</li> 3000 <li>Windows Makefiles updates from Igor</li> 3001 </ul> 3002 3003 <h3>2.4.10: Nov 10 2001</h3> 3004 <ul> 3005 <li>URI escaping fix (Joel Young)</li> 3006 <li>added xmlGetNodePath() (for paths or XPointers generation)</li> 3007 <li>Fixes namespace handling problems when using DTD and validation</li> 3008 <li>improvements on xmllint: Morus Walter patches for --format and 3009 --encode, Stefan Kost and Heiko Rupp improvements on the --shell</li> 3010 <li>fixes for xmlcatalog linking pointed by Weiqi Gao</li> 3011 <li>fixes to the HTML parser</li> 3012 </ul> 3013 3014 <h3>2.4.9: Nov 6 2001</h3> 3015 <ul> 3016 <li>fixes more catalog bugs</li> 3017 <li>avoid a compilation problem, improve xmlGetLineNo()</li> 3018 </ul> 3019 3020 <h3>2.4.8: Nov 4 2001</h3> 3021 <ul> 3022 <li>fixed SGML catalogs broken in previous release, updated xmlcatalog 3023 tool</li> 3024 <li>fixed a compile errors and some includes troubles.</li> 3025 </ul> 3026 3027 <h3>2.4.7: Oct 30 2001</h3> 3028 <ul> 3029 <li>exported some debugging interfaces</li> 3030 <li>serious rewrite of the catalog code</li> 3031 <li>integrated Gary Pennington thread safety patch, added configure option 3032 and regression tests</li> 3033 <li>removed an HTML parser bug</li> 3034 <li>fixed a couple of potentially serious validation bugs</li> 3035 <li>integrated the SGML DocBook support in xmllint</li> 3036 <li>changed the nanoftp anonymous login passwd</li> 3037 <li>some I/O cleanup and a couple of interfaces for Perl wrapper</li> 3038 <li>general bug fixes</li> 3039 <li>updated xmllint man page by John Fleck</li> 3040 <li>some VMS and Windows updates</li> 3041 </ul> 3042 3043 <h3>2.4.6: Oct 10 2001</h3> 3044 <ul> 3045 <li>added an updated man pages by John Fleck</li> 3046 <li>portability and configure fixes</li> 3047 <li>an infinite loop on the HTML parser was removed (William)</li> 3048 <li>Windows makefile patches from Igor</li> 3049 <li>fixed half a dozen bugs reported for libxml or libxslt</li> 3050 <li>updated xmlcatalog to be able to modify SGML super catalogs</li> 3051 </ul> 3052 3053 <h3>2.4.5: Sep 14 2001</h3> 3054 <ul> 3055 <li>Remove a few annoying bugs in 2.4.4</li> 3056 <li>forces the HTML serializer to output decimal charrefs since some 3057 version of Netscape can't handle hexadecimal ones</li> 3058 </ul> 3059 3060 <h3>1.8.16: Sep 14 2001</h3> 3061 <ul> 3062 <li>maintenance release of the old libxml1 branch, couple of bug and 3063 portability fixes</li> 3064 </ul> 3065 3066 <h3>2.4.4: Sep 12 2001</h3> 3067 <ul> 3068 <li>added --convert to xmlcatalog, bug fixes and cleanups of XML 3069 Catalog</li> 3070 <li>a few bug fixes and some portability changes</li> 3071 <li>some documentation cleanups</li> 3072 </ul> 3073 3074 <h3>2.4.3: Aug 23 2001</h3> 3075 <ul> 3076 <li>XML Catalog support see the doc</li> 3077 <li>New NaN/Infinity floating point code</li> 3078 <li>A few bug fixes</li> 3079 </ul> 3080 3081 <h3>2.4.2: Aug 15 2001</h3> 3082 <ul> 3083 <li>adds xmlLineNumbersDefault() to control line number generation</li> 3084 <li>lot of bug fixes</li> 3085 <li>the Microsoft MSC projects files should now be up to date</li> 3086 <li>inheritance of namespaces from DTD defaulted attributes</li> 3087 <li>fixes a serious potential security bug</li> 3088 <li>added a --format option to xmllint</li> 3089 </ul> 3090 3091 <h3>2.4.1: July 24 2001</h3> 3092 <ul> 3093 <li>possibility to keep line numbers in the tree</li> 3094 <li>some computation NaN fixes</li> 3095 <li>extension of the XPath API</li> 3096 <li>cleanup for alpha and ia64 targets</li> 3097 <li>patch to allow saving through HTTP PUT or POST</li> 3098 </ul> 3099 3100 <h3>2.4.0: July 10 2001</h3> 3101 <ul> 3102 <li>Fixed a few bugs in XPath, validation, and tree handling.</li> 3103 <li>Fixed XML Base implementation, added a couple of examples to the 3104 regression tests</li> 3105 <li>A bit of cleanup</li> 3106 </ul> 3107 3108 <h3>2.3.14: July 5 2001</h3> 3109 <ul> 3110 <li>fixed some entities problems and reduce memory requirement when 3111 substituting them</li> 3112 <li>lots of improvements in the XPath queries interpreter can be 3113 substantially faster</li> 3114 <li>Makefiles and configure cleanups</li> 3115 <li>Fixes to XPath variable eval, and compare on empty node set</li> 3116 <li>HTML tag closing bug fixed</li> 3117 <li>Fixed an URI reference computation problem when validating</li> 3118 </ul> 3119 3120 <h3>2.3.13: June 28 2001</h3> 3121 <ul> 3122 <li>2.3.12 configure.in was broken as well as the push mode XML parser</li> 3123 <li>a few more fixes for compilation on Windows MSC by Yon Derek</li> 3124 </ul> 3125 3126 <h3>1.8.14: June 28 2001</h3> 3127 <ul> 3128 <li>Zbigniew Chyla gave a patch to use the old XML parser in push mode</li> 3129 <li>Small Makefile fix</li> 3130 </ul> 3131 3132 <h3>2.3.12: June 26 2001</h3> 3133 <ul> 3134 <li>lots of cleanup</li> 3135 <li>a couple of validation fix</li> 3136 <li>fixed line number counting</li> 3137 <li>fixed serious problems in the XInclude processing</li> 3138 <li>added support for UTF8 BOM at beginning of entities</li> 3139 <li>fixed a strange gcc optimizer bugs in xpath handling of float, gcc-3.0 3140 miscompile uri.c (William), Thomas Leitner provided a fix for the 3141 optimizer on Tru64</li> 3142 <li>incorporated Yon Derek and Igor Zlatkovic fixes and improvements for 3143 compilation on Windows MSC</li> 3144 <li>update of libxml-doc.el (Felix Natter)</li> 3145 <li>fixed 2 bugs in URI normalization code</li> 3146 </ul> 3147 3148 <h3>2.3.11: June 17 2001</h3> 3149 <ul> 3150 <li>updates to trio, Makefiles and configure should fix some portability 3151 problems (alpha)</li> 3152 <li>fixed some HTML serialization problems (pre, script, and block/inline 3153 handling), added encoding aware APIs, cleanup of this code</li> 3154 <li>added xmlHasNsProp()</li> 3155 <li>implemented a specific PI for encoding support in the DocBook SGML 3156 parser</li> 3157 <li>some XPath fixes (-Infinity, / as a function parameter and namespaces 3158 node selection)</li> 3159 <li>fixed a performance problem and an error in the validation code</li> 3160 <li>fixed XInclude routine to implement the recursive behaviour</li> 3161 <li>fixed xmlFreeNode problem when libxml is included statically twice</li> 3162 <li>added --version to xmllint for bug reports</li> 3163 </ul> 3164 3165 <h3>2.3.10: June 1 2001</h3> 3166 <ul> 3167 <li>fixed the SGML catalog support</li> 3168 <li>a number of reported bugs got fixed, in XPath, iconv detection, 3169 XInclude processing</li> 3170 <li>XPath string function should now handle unicode correctly</li> 3171 </ul> 3172 3173 <h3>2.3.9: May 19 2001</h3> 3174 3175 <p>Lots of bugfixes, and added a basic SGML catalog support: 3176 </p> 3177 <ul> 3178 <li>HTML push bugfix #54891 and another patch from Jonas Borgstrom</li> 3179 <li>some serious speed optimization again</li> 3180 <li>some documentation cleanups</li> 3181 <li>trying to get better linking on Solaris (-R)</li> 3182 <li>XPath API cleanup from Thomas Broyer</li> 3183 <li>Validation bug fixed #54631, added a patch from Gary Pennington, fixed 3184 xmlValidGetValidElements()</li> 3185 <li>Added an INSTALL file</li> 3186 <li>Attribute removal added to API: #54433</li> 3187 <li>added a basic support for SGML catalogs</li> 3188 <li>fixed xmlKeepBlanksDefault(0) API</li> 3189 <li>bugfix in xmlNodeGetLang()</li> 3190 <li>fixed a small configure portability problem</li> 3191 <li>fixed an inversion of SYSTEM and PUBLIC identifier in HTML document</li> 3192 </ul> 3193 3194 <h3>1.8.13: May 14 2001</h3> 3195 <ul> 3196 <li>bugfixes release of the old libxml1 branch used by Gnome</li> 3197 </ul> 3198 3199 <h3>2.3.8: May 3 2001</h3> 3200 <ul> 3201 <li>Integrated an SGML DocBook parser for the Gnome project</li> 3202 <li>Fixed a few things in the HTML parser</li> 3203 <li>Fixed some XPath bugs raised by XSLT use, tried to fix the floating 3204 point portability issue</li> 3205 <li>Speed improvement (8M/s for SAX, 3M/s for DOM, 1.5M/s for 3206 DOM+validation using the XML REC as input and a 700MHz celeron).</li> 3207 <li>incorporated more Windows cleanup</li> 3208 <li>added xmlSaveFormatFile()</li> 3209 <li>fixed problems in copying nodes with entities references (gdome)</li> 3210 <li>removed some troubles surrounding the new validation module</li> 3211 </ul> 3212 3213 <h3>2.3.7: April 22 2001</h3> 3214 <ul> 3215 <li>lots of small bug fixes, corrected XPointer</li> 3216 <li>Non deterministic content model validation support</li> 3217 <li>added xmlDocCopyNode for gdome2</li> 3218 <li>revamped the way the HTML parser handles end of tags</li> 3219 <li>XPath: corrections of namespaces support and number formatting</li> 3220 <li>Windows: Igor Zlatkovic patches for MSC compilation</li> 3221 <li>HTML output fixes from P C Chow and William M. Brack</li> 3222 <li>Improved validation speed sensible for DocBook</li> 3223 <li>fixed a big bug with ID declared in external parsed entities</li> 3224 <li>portability fixes, update of Trio from Bjorn Reese</li> 3225 </ul> 3226 3227 <h3>2.3.6: April 8 2001</h3> 3228 <ul> 3229 <li>Code cleanup using extreme gcc compiler warning options, found and 3230 cleared half a dozen potential problem</li> 3231 <li>the Eazel team found an XML parser bug</li> 3232 <li>cleaned up the user of some of the string formatting function. used the 3233 trio library code to provide the one needed when the platform is missing 3234 them</li> 3235 <li>xpath: removed a memory leak and fixed the predicate evaluation 3236 problem, extended the testsuite and cleaned up the result. XPointer seems 3237 broken ...</li> 3238 </ul> 3239 3240 <h3>2.3.5: Mar 23 2001</h3> 3241 <ul> 3242 <li>Biggest change is separate parsing and evaluation of XPath expressions, 3243 there is some new APIs for this too</li> 3244 <li>included a number of bug fixes(XML push parser, 51876, notations, 3245 52299)</li> 3246 <li>Fixed some portability issues</li> 3247 </ul> 3248 3249 <h3>2.3.4: Mar 10 2001</h3> 3250 <ul> 3251 <li>Fixed bugs #51860 and #51861</li> 3252 <li>Added a global variable xmlDefaultBufferSize to allow default buffer 3253 size to be application tunable.</li> 3254 <li>Some cleanup in the validation code, still a bug left and this part 3255 should probably be rewritten to support ambiguous content model :-\</li> 3256 <li>Fix a couple of serious bugs introduced or raised by changes in 2.3.3 3257 parser</li> 3258 <li>Fixed another bug in xmlNodeGetContent()</li> 3259 <li>Bjorn fixed XPath node collection and Number formatting</li> 3260 <li>Fixed a loop reported in the HTML parsing</li> 3261 <li>blank space are reported even if the Dtd content model proves that they 3262 are formatting spaces, this is for XML conformance</li> 3263 </ul> 3264 3265 <h3>2.3.3: Mar 1 2001</h3> 3266 <ul> 3267 <li>small change in XPath for XSLT</li> 3268 <li>documentation cleanups</li> 3269 <li>fix in validation by Gary Pennington</li> 3270 <li>serious parsing performances improvements</li> 3271 </ul> 3272 3273 <h3>2.3.2: Feb 24 2001</h3> 3274 <ul> 3275 <li>chasing XPath bugs, found a bunch, completed some TODO</li> 3276 <li>fixed a Dtd parsing bug</li> 3277 <li>fixed a bug in xmlNodeGetContent</li> 3278 <li>ID/IDREF support partly rewritten by Gary Pennington</li> 3279 </ul> 3280 3281 <h3>2.3.1: Feb 15 2001</h3> 3282 <ul> 3283 <li>some XPath and HTML bug fixes for XSLT</li> 3284 <li>small extension of the hash table interfaces for DOM gdome2 3285 implementation</li> 3286 <li>A few bug fixes</li> 3287 </ul> 3288 3289 <h3>2.3.0: Feb 8 2001 (2.2.12 was on 25 Jan but I didn't kept track)</h3> 3290 <ul> 3291 <li>Lots of XPath bug fixes</li> 3292 <li>Add a mode with Dtd lookup but without validation error reporting for 3293 XSLT</li> 3294 <li>Add support for text node without escaping (XSLT)</li> 3295 <li>bug fixes for xmlCheckFilename</li> 3296 <li>validation code bug fixes from Gary Pennington</li> 3297 <li>Patch from Paul D. Smith correcting URI path normalization</li> 3298 <li>Patch to allow simultaneous install of libxml-devel and 3299 libxml2-devel</li> 3300 <li>the example Makefile is now fixed</li> 3301 <li>added HTML to the RPM packages</li> 3302 <li>tree copying bugfixes</li> 3303 <li>updates to Windows makefiles</li> 3304 <li>optimization patch from Bjorn Reese</li> 3305 </ul> 3306 3307 <h3>2.2.11: Jan 4 2001</h3> 3308 <ul> 3309 <li>bunch of bug fixes (memory I/O, xpath, ftp/http, ...)</li> 3310 <li>added htmlHandleOmittedElem()</li> 3311 <li>Applied Bjorn Reese's IPV6 first patch</li> 3312 <li>Applied Paul D. Smith patches for validation of XInclude results</li> 3313 <li>added XPointer xmlns() new scheme support</li> 3314 </ul> 3315 3316 <h3>2.2.10: Nov 25 2000</h3> 3317 <ul> 3318 <li>Fix the Windows problems of 2.2.8</li> 3319 <li>integrate OpenVMS patches</li> 3320 <li>better handling of some nasty HTML input</li> 3321 <li>Improved the XPointer implementation</li> 3322 <li>integrate a number of provided patches</li> 3323 </ul> 3324 3325 <h3>2.2.9: Nov 25 2000</h3> 3326 <ul> 3327 <li>erroneous release :-(</li> 3328 </ul> 3329 3330 <h3>2.2.8: Nov 13 2000</h3> 3331 <ul> 3332 <li>First version of <a href="http://www.w3.org/TR/xinclude">XInclude</a> 3333 support</li> 3334 <li>Patch in conditional section handling</li> 3335 <li>updated MS compiler project</li> 3336 <li>fixed some XPath problems</li> 3337 <li>added an URI escaping function</li> 3338 <li>some other bug fixes</li> 3339 </ul> 3340 3341 <h3>2.2.7: Oct 31 2000</h3> 3342 <ul> 3343 <li>added message redirection</li> 3344 <li>XPath improvements (thanks TOM !)</li> 3345 <li>xmlIOParseDTD() added</li> 3346 <li>various small fixes in the HTML, URI, HTTP and XPointer support</li> 3347 <li>some cleanup of the Makefile, autoconf and the distribution content</li> 3348 </ul> 3349 3350 <h3>2.2.6: Oct 25 2000:</h3> 3351 <ul> 3352 <li>Added an hash table module, migrated a number of internal structure to 3353 those</li> 3354 <li>Fixed a posteriori validation problems</li> 3355 <li>HTTP module cleanups</li> 3356 <li>HTML parser improvements (tag errors, script/style handling, attribute 3357 normalization)</li> 3358 <li>coalescing of adjacent text nodes</li> 3359 <li>couple of XPath bug fixes, exported the internal API</li> 3360 </ul> 3361 3362 <h3>2.2.5: Oct 15 2000:</h3> 3363 <ul> 3364 <li>XPointer implementation and testsuite</li> 3365 <li>Lot of XPath fixes, added variable and functions registration, more 3366 tests</li> 3367 <li>Portability fixes, lots of enhancements toward an easy Windows build 3368 and release</li> 3369 <li>Late validation fixes</li> 3370 <li>Integrated a lot of contributed patches</li> 3371 <li>added memory management docs</li> 3372 <li>a performance problem when using large buffer seems fixed</li> 3373 </ul> 3374 3375 <h3>2.2.4: Oct 1 2000:</h3> 3376 <ul> 3377 <li>main XPath problem fixed</li> 3378 <li>Integrated portability patches for Windows</li> 3379 <li>Serious bug fixes on the URI and HTML code</li> 3380 </ul> 3381 3382 <h3>2.2.3: Sep 17 2000</h3> 3383 <ul> 3384 <li>bug fixes</li> 3385 <li>cleanup of entity handling code</li> 3386 <li>overall review of all loops in the parsers, all sprintf usage has been 3387 checked too</li> 3388 <li>Far better handling of larges Dtd. Validating against DocBook XML Dtd 3389 works smoothly now.</li> 3390 </ul> 3391 3392 <h3>1.8.10: Sep 6 2000</h3> 3393 <ul> 3394 <li>bug fix release for some Gnome projects</li> 3395 </ul> 3396 3397 <h3>2.2.2: August 12 2000</h3> 3398 <ul> 3399 <li>mostly bug fixes</li> 3400 <li>started adding routines to access xml parser context options</li> 3401 </ul> 3402 3403 <h3>2.2.1: July 21 2000</h3> 3404 <ul> 3405 <li>a purely bug fixes release</li> 3406 <li>fixed an encoding support problem when parsing from a memory block</li> 3407 <li>fixed a DOCTYPE parsing problem</li> 3408 <li>removed a bug in the function allowing to override the memory 3409 allocation routines</li> 3410 </ul> 3411 3412 <h3>2.2.0: July 14 2000</h3> 3413 <ul> 3414 <li>applied a lot of portability fixes</li> 3415 <li>better encoding support/cleanup and saving (content is now always 3416 encoded in UTF-8)</li> 3417 <li>the HTML parser now correctly handles encodings</li> 3418 <li>added xmlHasProp()</li> 3419 <li>fixed a serious problem with &#38;</li> 3420 <li>propagated the fix to FTP client</li> 3421 <li>cleanup, bugfixes, etc ...</li> 3422 <li>Added a page about <a href="encoding.html">libxml Internationalization 3423 support</a></li> 3424 </ul> 3425 3426 <h3>1.8.9: July 9 2000</h3> 3427 <ul> 3428 <li>fixed the spec the RPMs should be better</li> 3429 <li>fixed a serious bug in the FTP implementation, released 1.8.9 to solve 3430 rpmfind users problem</li> 3431 </ul> 3432 3433 <h3>2.1.1: July 1 2000</h3> 3434 <ul> 3435 <li>fixes a couple of bugs in the 2.1.0 packaging</li> 3436 <li>improvements on the HTML parser</li> 3437 </ul> 3438 3439 <h3>2.1.0 and 1.8.8: June 29 2000</h3> 3440 <ul> 3441 <li>1.8.8 is mostly a commodity package for upgrading to libxml2 according 3442 to <a href="upgrade.html">new instructions</a>. It fixes a nasty problem 3443 about &#38; charref parsing</li> 3444 <li>2.1.0 also ease the upgrade from libxml v1 to the recent version. it 3445 also contains numerous fixes and enhancements: 3446 <ul> 3447 <li>added xmlStopParser() to stop parsing</li> 3448 <li>improved a lot parsing speed when there is large CDATA blocs</li> 3449 <li>includes XPath patches provided by Picdar Technology</li> 3450 <li>tried to fix as much as possible DTD validation and namespace 3451 related problems</li> 3452 <li>output to a given encoding has been added/tested</li> 3453 <li>lot of various fixes</li> 3454 </ul> 3455 </li> 3456 </ul> 3457 3458 <h3>2.0.0: Apr 12 2000</h3> 3459 <ul> 3460 <li>First public release of libxml2. If you are using libxml, it's a good 3461 idea to check the 1.x to 2.x upgrade instructions. NOTE: while initially 3462 scheduled for Apr 3 the release occurred only on Apr 12 due to massive 3463 workload.</li> 3464 <li>The include are now located under $prefix/include/libxml (instead of 3465 $prefix/include/gnome-xml), they also are referenced by 3466 <pre>#include <libxml/xxx.h></pre> 3467 <p>instead of</p> 3468 <pre>#include "xxx.h"</pre> 3469 </li> 3470 <li>a new URI module for parsing URIs and following strictly RFC 2396</li> 3471 <li>the memory allocation routines used by libxml can now be overloaded 3472 dynamically by using xmlMemSetup()</li> 3473 <li>The previously CVS only tool tester has been renamed 3474 <strong>xmllint</strong> and is now installed as part of the libxml2 3475 package</li> 3476 <li>The I/O interface has been revamped. There is now ways to plug in 3477 specific I/O modules, either at the URI scheme detection level using 3478 xmlRegisterInputCallbacks() or by passing I/O functions when creating a 3479 parser context using xmlCreateIOParserCtxt()</li> 3480 <li>there is a C preprocessor macro LIBXML_VERSION providing the version 3481 number of the libxml module in use</li> 3482 <li>a number of optional features of libxml can now be excluded at 3483 configure time (FTP/HTTP/HTML/XPath/Debug)</li> 3484 </ul> 3485 3486 <h3>2.0.0beta: Mar 14 2000</h3> 3487 <ul> 3488 <li>This is a first Beta release of libxml version 2</li> 3489 <li>It's available only from<a href="ftp://xmlsoft.org/libxml2/">xmlsoft.org 3490 FTP</a>, it's packaged as libxml2-2.0.0beta and available as tar and 3491 RPMs</li> 3492 <li>This version is now the head in the Gnome CVS base, the old one is 3493 available under the tag LIB_XML_1_X</li> 3494 <li>This includes a very large set of changes. From a programmatic point 3495 of view applications should not have to be modified too much, check the 3496 <a href="upgrade.html">upgrade page</a></li> 3497 <li>Some interfaces may changes (especially a bit about encoding).</li> 3498 <li>the updates includes: 3499 <ul> 3500 <li>fix I18N support. ISO-Latin-x/UTF-8/UTF-16 (nearly) seems correctly 3501 handled now</li> 3502 <li>Better handling of entities, especially well-formedness checking 3503 and proper PEref extensions in external subsets</li> 3504 <li>DTD conditional sections</li> 3505 <li>Validation now correctly handle entities content</li> 3506 <li><a href="http://rpmfind.net/tools/gdome/messages/0039.html">change 3507 structures to accommodate DOM</a></li> 3508 </ul> 3509 </li> 3510 <li>Serious progress were made toward compliance, <a 3511 href="conf/result.html">here are the result of the test</a> against the 3512 OASIS testsuite (except the Japanese tests since I don't support that 3513 encoding yet). This URL is rebuilt every couple of hours using the CVS 3514 head version.</li> 3515 </ul> 3516 3517 <h3>1.8.7: Mar 6 2000</h3> 3518 <ul> 3519 <li>This is a bug fix release:</li> 3520 <li>It is possible to disable the ignorable blanks heuristic used by 3521 libxml-1.x, a new function xmlKeepBlanksDefault(0) will allow this. Note 3522 that for adherence to XML spec, this behaviour will be disabled by 3523 default in 2.x . The same function will allow to keep compatibility for 3524 old code.</li> 3525 <li>Blanks in <a> </a> constructs are not ignored anymore, 3526 avoiding heuristic is really the Right Way :-\</li> 3527 <li>The unchecked use of snprintf which was breaking libxml-1.8.6 3528 compilation on some platforms has been fixed</li> 3529 <li>nanoftp.c nanohttp.c: Fixed '#' and '?' stripping when processing 3530 URIs</li> 3531 </ul> 3532 3533 <h3>1.8.6: Jan 31 2000</h3> 3534 <ul> 3535 <li>added a nanoFTP transport module, debugged until the new version of <a 3536 href="http://rpmfind.net/linux/rpm2html/rpmfind.html">rpmfind</a> can use 3537 it without troubles</li> 3538 </ul> 3539 3540 <h3>1.8.5: Jan 21 2000</h3> 3541 <ul> 3542 <li>adding APIs to parse a well balanced chunk of XML (production <a 3543 href="http://www.w3.org/TR/REC-xml#NT-content">[43] content</a> of the 3544 XML spec)</li> 3545 <li>fixed a hideous bug in xmlGetProp pointed by Rune.Djurhuus@fast.no</li> 3546 <li>Jody Goldberg <jgoldberg@home.com> provided another patch trying 3547 to solve the zlib checks problems</li> 3548 <li>The current state in gnome CVS base is expected to ship as 1.8.5 with 3549 gnumeric soon</li> 3550 </ul> 3551 3552 <h3>1.8.4: Jan 13 2000</h3> 3553 <ul> 3554 <li>bug fixes, reintroduced xmlNewGlobalNs(), fixed xmlNewNs()</li> 3555 <li>all exit() call should have been removed from libxml</li> 3556 <li>fixed a problem with INCLUDE_WINSOCK on WIN32 platform</li> 3557 <li>added newDocFragment()</li> 3558 </ul> 3559 3560 <h3>1.8.3: Jan 5 2000</h3> 3561 <ul> 3562 <li>a Push interface for the XML and HTML parsers</li> 3563 <li>a shell-like interface to the document tree (try tester --shell :-)</li> 3564 <li>lots of bug fixes and improvement added over XMas holidays</li> 3565 <li>fixed the DTD parsing code to work with the xhtml DTD</li> 3566 <li>added xmlRemoveProp(), xmlRemoveID() and xmlRemoveRef()</li> 3567 <li>Fixed bugs in xmlNewNs()</li> 3568 <li>External entity loading code has been revamped, now it uses 3569 xmlLoadExternalEntity(), some fix on entities processing were added</li> 3570 <li>cleaned up WIN32 includes of socket stuff</li> 3571 </ul> 3572 3573 <h3>1.8.2: Dec 21 1999</h3> 3574 <ul> 3575 <li>I got another problem with includes and C++, I hope this issue is fixed 3576 for good this time</li> 3577 <li>Added a few tree modification functions: xmlReplaceNode, 3578 xmlAddPrevSibling, xmlAddNextSibling, xmlNodeSetName and 3579 xmlDocSetRootElement</li> 3580 <li>Tried to improve the HTML output with help from <a 3581 href="mailto:clahey@umich.edu">Chris Lahey</a></li> 3582 </ul> 3583 3584 <h3>1.8.1: Dec 18 1999</h3> 3585 <ul> 3586 <li>various patches to avoid troubles when using libxml with C++ compilers 3587 the "namespace" keyword and C escaping in include files</li> 3588 <li>a problem in one of the core macros IS_CHAR was corrected</li> 3589 <li>fixed a bug introduced in 1.8.0 breaking default namespace processing, 3590 and more specifically the Dia application</li> 3591 <li>fixed a posteriori validation (validation after parsing, or by using a 3592 Dtd not specified in the original document)</li> 3593 <li>fixed a bug in</li> 3594 </ul> 3595 3596 <h3>1.8.0: Dec 12 1999</h3> 3597 <ul> 3598 <li>cleanup, especially memory wise</li> 3599 <li>the parser should be more reliable, especially the HTML one, it should 3600 not crash, whatever the input !</li> 3601 <li>Integrated various patches, especially a speedup improvement for large 3602 dataset from <a href="mailto:cnygard@bellatlantic.net">Carl Nygard</a>, 3603 configure with --with-buffers to enable them.</li> 3604 <li>attribute normalization, oops should have been added long ago !</li> 3605 <li>attributes defaulted from DTDs should be available, xmlSetProp() now 3606 does entities escaping by default.</li> 3607 </ul> 3608 3609 <h3>1.7.4: Oct 25 1999</h3> 3610 <ul> 3611 <li>Lots of HTML improvement</li> 3612 <li>Fixed some errors when saving both XML and HTML</li> 3613 <li>More examples, the regression tests should now look clean</li> 3614 <li>Fixed a bug with contiguous charref</li> 3615 </ul> 3616 3617 <h3>1.7.3: Sep 29 1999</h3> 3618 <ul> 3619 <li>portability problems fixed</li> 3620 <li>snprintf was used unconditionally, leading to link problems on system 3621 were it's not available, fixed</li> 3622 </ul> 3623 3624 <h3>1.7.1: Sep 24 1999</h3> 3625 <ul> 3626 <li>The basic type for strings manipulated by libxml has been renamed in 3627 1.7.1 from <strong>CHAR</strong> to <strong>xmlChar</strong>. The reason 3628 is that CHAR was conflicting with a predefined type on Windows. However 3629 on non WIN32 environment, compatibility is provided by the way of a 3630 <strong>#define </strong>.</li> 3631 <li>Changed another error : the use of a structure field called errno, and 3632 leading to troubles on platforms where it's a macro</li> 3633 </ul> 3634 3635 <h3>1.7.0: Sep 23 1999</h3> 3636 <ul> 3637 <li>Added the ability to fetch remote DTD or parsed entities, see the <a 3638 href="html/libxml-nanohttp.html">nanohttp</a> module.</li> 3639 <li>Added an errno to report errors by another mean than a simple printf 3640 like callback</li> 3641 <li>Finished ID/IDREF support and checking when validation</li> 3642 <li>Serious memory leaks fixed (there is now a <a 3643 href="html/libxml-xmlmemory.html">memory wrapper</a> module)</li> 3644 <li>Improvement of <a href="http://www.w3.org/TR/xpath">XPath</a> 3645 implementation</li> 3646 <li>Added an HTML parser front-end</li> 3647 </ul> 3648 3649 <h2><a name="XML">XML</a></h2> 3650 3651 <p><a href="http://www.w3.org/TR/REC-xml">XML is a standard</a> for 3652 markup-based structured documents. Here is <a name="example">an example XML 3653 document</a>:</p> 3654 <pre><?xml version="1.0"?> 3655 <EXAMPLE prop1="gnome is great" prop2="&amp; linux too"> 3656 <head> 3657 <title>Welcome to Gnome</title> 3658 </head> 3659 <chapter> 3660 <title>The Linux adventure</title> 3661 <p>bla bla bla ...</p> 3662 <image href="linus.gif"/> 3663 <p>...</p> 3664 </chapter> 3665 </EXAMPLE></pre> 3666 3667 <p>The first line specifies that it is an XML document and gives useful 3668 information about its encoding. Then the rest of the document is a text 3669 format whose structure is specified by tags between brackets. <strong>Each 3670 tag opened has to be closed</strong>. XML is pedantic about this. However, if 3671 a tag is empty (no content), a single tag can serve as both the opening and 3672 closing tag if it ends with <code>/></code> rather than with 3673 <code>></code>. Note that, for example, the image tag has no content (just 3674 an attribute) and is closed by ending the tag with <code>/></code>.</p> 3675 3676 <p>XML can be applied successfully to a wide range of tasks, ranging from 3677 long term structured document maintenance (where it follows the steps of 3678 SGML) to simple data encoding mechanisms like configuration file formatting 3679 (glade), spreadsheets (gnumeric), or even shorter lived documents such as 3680 WebDAV where it is used to encode remote calls between a client and a 3681 server.</p> 3682 3683 <h2><a name="XSLT">XSLT</a></h2> 3684 3685 <p>Check <a href="http://xmlsoft.org/XSLT">the separate libxslt page</a></p> 3686 3687 <p><a href="http://www.w3.org/TR/xslt">XSL Transformations</a>, is a 3688 language for transforming XML documents into other XML documents (or 3689 HTML/textual output).</p> 3690 3691 <p>A separate library called libxslt is available implementing XSLT-1.0 for 3692 libxml2. This module "libxslt" too can be found in the Gnome SVN base.</p> 3693 3694 <p>You can check the progresses on the libxslt <a 3695 href="http://xmlsoft.org/XSLT/ChangeLog.html">Changelog</a>.</p> 3696 3697 <h2><a name="Python">Python and bindings</a></h2> 3698 3699 <p>There are a number of language bindings and wrappers available for 3700 libxml2, the list below is not exhaustive. Please contact the <a 3701 href="http://mail.gnome.org/mailman/listinfo/xml-bindings">xml-bindings@gnome.org</a> 3702 (<a href="http://mail.gnome.org/archives/xml-bindings/">archives</a>) in 3703 order to get updates to this list or to discuss the specific topic of libxml2 3704 or libxslt wrappers or bindings:</p> 3705 <ul> 3706 <li><a href="http://libxmlplusplus.sourceforge.net/">Libxml++</a> seems the 3707 most up-to-date C++ bindings for libxml2, check the <a 3708 href="http://libxmlplusplus.sourceforge.net/reference/html/hierarchy.html">documentation</a> 3709 and the <a 3710 href="http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/libxmlplusplus/libxml%2b%2b/examples/">examples</a>.</li> 3711 <li>There is another <a href="http://libgdome-cpp.berlios.de/">C++ wrapper 3712 based on the gdome2 bindings</a> maintained by Tobias Peters.</li> 3713 <li>and a third C++ wrapper by Peter Jones <pjones@pmade.org> 3714 <p>Website: <a 3715 href="http://pmade.org/pjones/software/xmlwrapp/">http://pmade.org/pjones/software/xmlwrapp/</a></p> 3716 </li> 3717 <li>XML::LibXML <a href="http://cpan.uwinnipeg.ca/dist/XML-LibXML">Perl 3718 bindings</a> are available on CPAN, as well as XML::LibXSLT 3719 <a href="http://cpan.uwinnipeg.ca/dist/XML-LibXSLT">Perl libxslt 3720 bindings</a>.</li> 3721 <li>If you're interested into scripting XML processing, have a look at <a 3722 href="http://xsh.sourceforge.net/">XSH</a> an XML editing shell based on 3723 Libxml2 Perl bindings.</li> 3724 <li><a href="mailto:dkuhlman@cutter.rexx.com">Dave Kuhlman</a> provides an 3725 earlier version of the libxml/libxslt <a 3726 href="http://www.rexx.com/~dkuhlman">wrappers for Python</a>.</li> 3727 <li>Gopal.V and Peter Minten develop <a 3728 href="http://savannah.gnu.org/projects/libxmlsharp">libxml#</a>, a set of 3729 C# libxml2 bindings.</li> 3730 <li>Petr Kozelka provides <a 3731 href="http://sourceforge.net/projects/libxml2-pas">Pascal units to glue 3732 libxml2</a> with Kylix, Delphi and other Pascal compilers.</li> 3733 <li>Uwe Fechner also provides <a 3734 href="http://sourceforge.net/projects/idom2-pas/">idom2</a>, a DOM2 3735 implementation for Kylix2/D5/D6 from Borland.</li> 3736 <li>There is <a href="http://libxml.rubyforge.org/">bindings for Ruby</a> 3737 and libxml2 bindings are also available in Ruby through the <a 3738 href="http://libgdome-ruby.berlios.de/">libgdome-ruby</a> module 3739 maintained by Tobias Peters.</li> 3740 <li>Steve Ball and contributors maintains <a 3741 href="http://tclxml.sourceforge.net/">libxml2 and libxslt bindings for 3742 Tcl</a>.</li> 3743 <li>libxml2 and libxslt are the default XML libraries for PHP5.</li> 3744 <li><a href="http://savannah.gnu.org/projects/classpathx/">LibxmlJ</a> is 3745 an effort to create a 100% JAXP-compatible Java wrapper for libxml2 and 3746 libxslt as part of GNU ClasspathX project.</li> 3747 <li>Patrick McPhee provides Rexx bindings fof libxml2 and libxslt, look for 3748 <a href="http://www.interlog.com/~ptjm/software.html">RexxXML</a>.</li> 3749 <li><a 3750 href="http://www.satimage.fr/software/en/xml_suite.html">Satimage</a> 3751 provides <a 3752 href="http://www.satimage.fr/software/en/downloads_osaxen.html">XMLLib 3753 osax</a>. This is an osax for Mac OS X with a set of commands to 3754 implement in AppleScript the XML DOM, XPATH and XSLT. Also includes 3755 commands for Property-lists (Apple's fast lookup table XML format.)</li> 3756 <li>Francesco Montorsi developped <a 3757 href="https://sourceforge.net/project/showfiles.php?group_id=51305&package_id=45182">wxXml2</a> 3758 wrappers that interface libxml2, allowing wxWidgets applications to 3759 load/save/edit XML instances.</li> 3760 </ul> 3761 3762 <p>The distribution includes a set of Python bindings, which are guaranteed 3763 to be maintained as part of the library in the future, though the Python 3764 interface have not yet reached the completeness of the C API.</p> 3765 3766 <p>Note that some of the Python purist dislike the default set of Python 3767 bindings, rather than complaining I suggest they have a look at <a 3768 href="http://lxml.de/">lxml the more pythonic bindings for libxml2 3769 and libxslt</a> and <a 3770 href="http://lxml.de/mailinglist/">check the mailing-list</a>.</p> 3771 3772 <p><a href="mailto:stephane.bidoul@softwareag.com">Stéphane Bidoul</a> 3773 maintains <a href="http://users.skynet.be/sbi/libxml-python/">a Windows port 3774 of the Python bindings</a>.</p> 3775 3776 <p>Note to people interested in building bindings, the API is formalized as 3777 <a href="libxml2-api.xml">an XML API description file</a> which allows to 3778 automate a large part of the Python bindings, this includes function 3779 descriptions, enums, structures, typedefs, etc... The Python script used to 3780 build the bindings is python/generator.py in the source distribution.</p> 3781 3782 <p>To install the Python bindings there are 2 options:</p> 3783 <ul> 3784 <li>If you use an RPM based distribution, simply install the <a 3785 href="http://rpmfind.net/linux/rpm2html/search.php?query=libxml2-python">libxml2-python 3786 RPM</a> (and if needed the <a 3787 href="http://rpmfind.net/linux/rpm2html/search.php?query=libxslt-python">libxslt-python 3788 RPM</a>).</li> 3789 <li>Otherwise use the <a href="ftp://xmlsoft.org/libxml2/python/">libxml2-python 3790 module distribution</a> corresponding to your installed version of 3791 libxml2 and libxslt. Note that to install it you will need both libxml2 3792 and libxslt installed and run "python setup.py build install" in the 3793 module tree.</li> 3794 </ul> 3795 3796 <p>The distribution includes a set of examples and regression tests for the 3797 python bindings in the <code>python/tests</code> directory. Here are some 3798 excerpts from those tests:</p> 3799 3800 <h3>tst.py:</h3> 3801 3802 <p>This is a basic test of the file interface and DOM navigation:</p> 3803 <pre>import libxml2, sys 3804 3805 doc = libxml2.parseFile("tst.xml") 3806 if doc.name != "tst.xml": 3807 print "doc.name failed" 3808 sys.exit(1) 3809 root = doc.children 3810 if root.name != "doc": 3811 print "root.name failed" 3812 sys.exit(1) 3813 child = root.children 3814 if child.name != "foo": 3815 print "child.name failed" 3816 sys.exit(1) 3817 doc.freeDoc()</pre> 3818 3819 <p>The Python module is called libxml2; parseFile is the equivalent of 3820 xmlParseFile (most of the bindings are automatically generated, and the xml 3821 prefix is removed and the casing convention are kept). All node seen at the 3822 binding level share the same subset of accessors:</p> 3823 <ul> 3824 <li><code>name</code> : returns the node name</li> 3825 <li><code>type</code> : returns a string indicating the node type</li> 3826 <li><code>content</code> : returns the content of the node, it is based on 3827 xmlNodeGetContent() and hence is recursive.</li> 3828 <li><code>parent</code> , <code>children</code>, <code>last</code>, 3829 <code>next</code>, <code>prev</code>, <code>doc</code>, 3830 <code>properties</code>: pointing to the associated element in the tree, 3831 those may return None in case no such link exists.</li> 3832 </ul> 3833 3834 <p>Also note the need to explicitly deallocate documents with freeDoc() . 3835 Reference counting for libxml2 trees would need quite a lot of work to 3836 function properly, and rather than risk memory leaks if not implemented 3837 correctly it sounds safer to have an explicit function to free a tree. The 3838 wrapper python objects like doc, root or child are them automatically garbage 3839 collected.</p> 3840 3841 <h3>validate.py:</h3> 3842 3843 <p>This test check the validation interfaces and redirection of error 3844 messages:</p> 3845 <pre>import libxml2 3846 3847 #deactivate error messages from the validation 3848 def noerr(ctx, str): 3849 pass 3850 3851 libxml2.registerErrorHandler(noerr, None) 3852 3853 ctxt = libxml2.createFileParserCtxt("invalid.xml") 3854 ctxt.validate(1) 3855 ctxt.parseDocument() 3856 doc = ctxt.doc() 3857 valid = ctxt.isValid() 3858 doc.freeDoc() 3859 if valid != 0: 3860 print "validity check failed"</pre> 3861 3862 <p>The first thing to notice is the call to registerErrorHandler(), it 3863 defines a new error handler global to the library. It is used to avoid seeing 3864 the error messages when trying to validate the invalid document.</p> 3865 3866 <p>The main interest of that test is the creation of a parser context with 3867 createFileParserCtxt() and how the behaviour can be changed before calling 3868 parseDocument() . Similarly the information resulting from the parsing phase 3869 is also available using context methods.</p> 3870 3871 <p>Contexts like nodes are defined as class and the libxml2 wrappers maps the 3872 C function interfaces in terms of objects method as much as possible. The 3873 best to get a complete view of what methods are supported is to look at the 3874 libxml2.py module containing all the wrappers.</p> 3875 3876 <h3>push.py:</h3> 3877 3878 <p>This test show how to activate the push parser interface:</p> 3879 <pre>import libxml2 3880 3881 ctxt = libxml2.createPushParser(None, "<foo", 4, "test.xml") 3882 ctxt.parseChunk("/>", 2, 1) 3883 doc = ctxt.doc() 3884 3885 doc.freeDoc()</pre> 3886 3887 <p>The context is created with a special call based on the 3888 xmlCreatePushParser() from the C library. The first argument is an optional 3889 SAX callback object, then the initial set of data, the length and the name of 3890 the resource in case URI-References need to be computed by the parser.</p> 3891 3892 <p>Then the data are pushed using the parseChunk() method, the last call 3893 setting the third argument terminate to 1.</p> 3894 3895 <h3>pushSAX.py:</h3> 3896 3897 <p>this test show the use of the event based parsing interfaces. In this case 3898 the parser does not build a document, but provides callback information as 3899 the parser makes progresses analyzing the data being provided:</p> 3900 <pre>import libxml2 3901 log = "" 3902 3903 class callback: 3904 def startDocument(self): 3905 global log 3906 log = log + "startDocument:" 3907 3908 def endDocument(self): 3909 global log 3910 log = log + "endDocument:" 3911 3912 def startElement(self, tag, attrs): 3913 global log 3914 log = log + "startElement %s %s:" % (tag, attrs) 3915 3916 def endElement(self, tag): 3917 global log 3918 log = log + "endElement %s:" % (tag) 3919 3920 def characters(self, data): 3921 global log 3922 log = log + "characters: %s:" % (data) 3923 3924 def warning(self, msg): 3925 global log 3926 log = log + "warning: %s:" % (msg) 3927 3928 def error(self, msg): 3929 global log 3930 log = log + "error: %s:" % (msg) 3931 3932 def fatalError(self, msg): 3933 global log 3934 log = log + "fatalError: %s:" % (msg) 3935 3936 handler = callback() 3937 3938 ctxt = libxml2.createPushParser(handler, "<foo", 4, "test.xml") 3939 chunk = " url='tst'>b" 3940 ctxt.parseChunk(chunk, len(chunk), 0) 3941 chunk = "ar</foo>" 3942 ctxt.parseChunk(chunk, len(chunk), 1) 3943 3944 reference = "startDocument:startElement foo {'url': 'tst'}:" + \ 3945 "characters: bar:endElement foo:endDocument:" 3946 if log != reference: 3947 print "Error got: %s" % log 3948 print "Expected: %s" % reference</pre> 3949 3950 <p>The key object in that test is the handler, it provides a number of entry 3951 points which can be called by the parser as it makes progresses to indicate 3952 the information set obtained. The full set of callback is larger than what 3953 the callback class in that specific example implements (see the SAX 3954 definition for a complete list). The wrapper will only call those supplied by 3955 the object when activated. The startElement receives the names of the element 3956 and a dictionary containing the attributes carried by this element.</p> 3957 3958 <p>Also note that the reference string generated from the callback shows a 3959 single character call even though the string "bar" is passed to the parser 3960 from 2 different call to parseChunk()</p> 3961 3962 <h3>xpath.py:</h3> 3963 3964 <p>This is a basic test of XPath wrappers support</p> 3965 <pre>import libxml2 3966 3967 doc = libxml2.parseFile("tst.xml") 3968 ctxt = doc.xpathNewContext() 3969 res = ctxt.xpathEval("//*") 3970 if len(res) != 2: 3971 print "xpath query: wrong node set size" 3972 sys.exit(1) 3973 if res[0].name != "doc" or res[1].name != "foo": 3974 print "xpath query: wrong node set value" 3975 sys.exit(1) 3976 doc.freeDoc() 3977 ctxt.xpathFreeContext()</pre> 3978 3979 <p>This test parses a file, then create an XPath context to evaluate XPath 3980 expression on it. The xpathEval() method execute an XPath query and returns 3981 the result mapped in a Python way. String and numbers are natively converted, 3982 and node sets are returned as a tuple of libxml2 Python nodes wrappers. Like 3983 the document, the XPath context need to be freed explicitly, also not that 3984 the result of the XPath query may point back to the document tree and hence 3985 the document must be freed after the result of the query is used.</p> 3986 3987 <h3>xpathext.py:</h3> 3988 3989 <p>This test shows how to extend the XPath engine with functions written in 3990 python:</p> 3991 <pre>import libxml2 3992 3993 def foo(ctx, x): 3994 return x + 1 3995 3996 doc = libxml2.parseFile("tst.xml") 3997 ctxt = doc.xpathNewContext() 3998 libxml2.registerXPathFunction(ctxt._o, "foo", None, foo) 3999 res = ctxt.xpathEval("foo(1)") 4000 if res != 2: 4001 print "xpath extension failure" 4002 doc.freeDoc() 4003 ctxt.xpathFreeContext()</pre> 4004 4005 <p>Note how the extension function is registered with the context (but that 4006 part is not yet finalized, this may change slightly in the future).</p> 4007 4008 <h3>tstxpath.py:</h3> 4009 4010 <p>This test is similar to the previous one but shows how the extension 4011 function can access the XPath evaluation context:</p> 4012 <pre>def foo(ctx, x): 4013 global called 4014 4015 # 4016 # test that access to the XPath evaluation contexts 4017 # 4018 pctxt = libxml2.xpathParserContext(_obj=ctx) 4019 ctxt = pctxt.context() 4020 called = ctxt.function() 4021 return x + 1</pre> 4022 4023 <p>All the interfaces around the XPath parser(or rather evaluation) context 4024 are not finalized, but it should be sufficient to do contextual work at the 4025 evaluation point.</p> 4026 4027 <h3>Memory debugging:</h3> 4028 4029 <p>last but not least, all tests starts with the following prologue:</p> 4030 <pre>#memory debug specific 4031 libxml2.debugMemory(1)</pre> 4032 4033 <p>and ends with the following epilogue:</p> 4034 <pre>#memory debug specific 4035 libxml2.cleanupParser() 4036 if libxml2.debugMemory(1) == 0: 4037 print "OK" 4038 else: 4039 print "Memory leak %d bytes" % (libxml2.debugMemory(1)) 4040 libxml2.dumpMemory()</pre> 4041 4042 <p>Those activate the memory debugging interface of libxml2 where all 4043 allocated block in the library are tracked. The prologue then cleans up the 4044 library state and checks that all allocated memory has been freed. If not it 4045 calls dumpMemory() which saves that list in a <code>.memdump</code> file.</p> 4046 4047 <h2><a name="architecture">libxml2 architecture</a></h2> 4048 4049 <p>Libxml2 is made of multiple components; some of them are optional, and 4050 most of the block interfaces are public. The main components are:</p> 4051 <ul> 4052 <li>an Input/Output layer</li> 4053 <li>FTP and HTTP client layers (optional)</li> 4054 <li>an Internationalization layer managing the encodings support</li> 4055 <li>a URI module</li> 4056 <li>the XML parser and its basic SAX interface</li> 4057 <li>an HTML parser using the same SAX interface (optional)</li> 4058 <li>a SAX tree module to build an in-memory DOM representation</li> 4059 <li>a tree module to manipulate the DOM representation</li> 4060 <li>a validation module using the DOM representation (optional)</li> 4061 <li>an XPath module for global lookup in a DOM representation 4062 (optional)</li> 4063 <li>a debug module (optional)</li> 4064 </ul> 4065 4066 <p>Graphically this gives the following:</p> 4067 4068 <p><img src="libxml.gif" alt="a graphical view of the various"></p> 4069 4070 <p></p> 4071 4072 <h2><a name="tree">The tree output</a></h2> 4073 4074 <p>The parser returns a tree built during the document analysis. The value 4075 returned is an <strong>xmlDocPtr</strong> (i.e., a pointer to an 4076 <strong>xmlDoc</strong> structure). This structure contains information such 4077 as the file name, the document type, and a <strong>children</strong> pointer 4078 which is the root of the document (or more exactly the first child under the 4079 root which is the document). The tree is made of <strong>xmlNode</strong>s, 4080 chained in double-linked lists of siblings and with a children<->parent 4081 relationship. An xmlNode can also carry properties (a chain of xmlAttr 4082 structures). An attribute may have a value which is a list of TEXT or 4083 ENTITY_REF nodes.</p> 4084 4085 <p>Here is an example (erroneous with respect to the XML spec since there 4086 should be only one ELEMENT under the root):</p> 4087 4088 <p><img src="structure.gif" alt=" structure.gif "></p> 4089 4090 <p>In the source package there is a small program (not installed by default) 4091 called <strong>xmllint</strong> which parses XML files given as argument and 4092 prints them back as parsed. This is useful for detecting errors both in XML 4093 code and in the XML parser itself. It has an option <strong>--debug</strong> 4094 which prints the actual in-memory structure of the document; here is the 4095 result with the <a href="#example">example</a> given before:</p> 4096 <pre>DOCUMENT 4097 version=1.0 4098 standalone=true 4099 ELEMENT EXAMPLE 4100 ATTRIBUTE prop1 4101 TEXT 4102 content=gnome is great 4103 ATTRIBUTE prop2 4104 ENTITY_REF 4105 TEXT 4106 content= linux too 4107 ELEMENT head 4108 ELEMENT title 4109 TEXT 4110 content=Welcome to Gnome 4111 ELEMENT chapter 4112 ELEMENT title 4113 TEXT 4114 content=The Linux adventure 4115 ELEMENT p 4116 TEXT 4117 content=bla bla bla ... 4118 ELEMENT image 4119 ATTRIBUTE href 4120 TEXT 4121 content=linus.gif 4122 ELEMENT p 4123 TEXT 4124 content=...</pre> 4125 4126 <p>This should be useful for learning the internal representation model.</p> 4127 4128 <h2><a name="interface">The SAX interface</a></h2> 4129 4130 <p>Sometimes the DOM tree output is just too large to fit reasonably into 4131 memory. In that case (and if you don't expect to save back the XML document 4132 loaded using libxml), it's better to use the SAX interface of libxml. SAX is 4133 a <strong>callback-based interface</strong> to the parser. Before parsing, 4134 the application layer registers a customized set of callbacks which are 4135 called by the library as it progresses through the XML input.</p> 4136 4137 <p>To get more detailed step-by-step guidance on using the SAX interface of 4138 libxml, see the <a 4139 href="http://www.jamesh.id.au/articles/libxml-sax/libxml-sax.html">nice 4140 documentation</a>.written by <a href="mailto:james@daa.com.au">James 4141 Henstridge</a>.</p> 4142 4143 <p>You can debug the SAX behaviour by using the <strong>testSAX</strong> 4144 program located in the gnome-xml module (it's usually not shipped in the 4145 binary packages of libxml, but you can find it in the tar source 4146 distribution). Here is the sequence of callbacks that would be reported by 4147 testSAX when parsing the example XML document shown earlier:</p> 4148 <pre>SAX.setDocumentLocator() 4149 SAX.startDocument() 4150 SAX.getEntity(amp) 4151 SAX.startElement(EXAMPLE, prop1='gnome is great', prop2='&amp; linux too') 4152 SAX.characters( , 3) 4153 SAX.startElement(head) 4154 SAX.characters( , 4) 4155 SAX.startElement(title) 4156 SAX.characters(Welcome to Gnome, 16) 4157 SAX.endElement(title) 4158 SAX.characters( , 3) 4159 SAX.endElement(head) 4160 SAX.characters( , 3) 4161 SAX.startElement(chapter) 4162 SAX.characters( , 4) 4163 SAX.startElement(title) 4164 SAX.characters(The Linux adventure, 19) 4165 SAX.endElement(title) 4166 SAX.characters( , 4) 4167 SAX.startElement(p) 4168 SAX.characters(bla bla bla ..., 15) 4169 SAX.endElement(p) 4170 SAX.characters( , 4) 4171 SAX.startElement(image, href='linus.gif') 4172 SAX.endElement(image) 4173 SAX.characters( , 4) 4174 SAX.startElement(p) 4175 SAX.characters(..., 3) 4176 SAX.endElement(p) 4177 SAX.characters( , 3) 4178 SAX.endElement(chapter) 4179 SAX.characters( , 1) 4180 SAX.endElement(EXAMPLE) 4181 SAX.endDocument()</pre> 4182 4183 <p>Most of the other interfaces of libxml2 are based on the DOM tree-building 4184 facility, so nearly everything up to the end of this document presupposes the 4185 use of the standard DOM tree build. Note that the DOM tree itself is built by 4186 a set of registered default callbacks, without internal specific 4187 interface.</p> 4188 4189 <h2><a name="Validation">Validation & DTDs</a></h2> 4190 4191 <p>Table of Content:</p> 4192 <ol> 4193 <li><a href="#General5">General overview</a></li> 4194 <li><a href="#definition">The definition</a></li> 4195 <li><a href="#Simple">Simple rules</a> 4196 <ol> 4197 <li><a href="#reference">How to reference a DTD from a document</a></li> 4198 <li><a href="#Declaring">Declaring elements</a></li> 4199 <li><a href="#Declaring1">Declaring attributes</a></li> 4200 </ol> 4201 </li> 4202 <li><a href="#Some">Some examples</a></li> 4203 <li><a href="#validate">How to validate</a></li> 4204 <li><a href="#Other">Other resources</a></li> 4205 </ol> 4206 4207 <h3><a name="General5">General overview</a></h3> 4208 4209 <p>Well what is validation and what is a DTD ?</p> 4210 4211 <p>DTD is the acronym for Document Type Definition. This is a description of 4212 the content for a family of XML files. This is part of the XML 1.0 4213 specification, and allows one to describe and verify that a given document 4214 instance conforms to the set of rules detailing its structure and content.</p> 4215 4216 <p>Validation is the process of checking a document against a DTD (more 4217 generally against a set of construction rules).</p> 4218 4219 <p>The validation process and building DTDs are the two most difficult parts 4220 of the XML life cycle. Briefly a DTD defines all the possible elements to be 4221 found within your document, what is the formal shape of your document tree 4222 (by defining the allowed content of an element; either text, a regular 4223 expression for the allowed list of children, or mixed content i.e. both text 4224 and children). The DTD also defines the valid attributes for all elements and 4225 the types of those attributes.</p> 4226 4227 <h3><a name="definition1">The definition</a></h3> 4228 4229 <p>The <a href="http://www.w3.org/TR/REC-xml">W3C XML Recommendation</a> (<a 4230 href="http://www.xml.com/axml/axml.html">Tim Bray's annotated version of 4231 Rev1</a>):</p> 4232 <ul> 4233 <li><a href="http://www.w3.org/TR/REC-xml#elemdecls">Declaring 4234 elements</a></li> 4235 <li><a href="http://www.w3.org/TR/REC-xml#attdecls">Declaring 4236 attributes</a></li> 4237 </ul> 4238 4239 <p>(unfortunately) all this is inherited from the SGML world, the syntax is 4240 ancient...</p> 4241 4242 <h3><a name="Simple1">Simple rules</a></h3> 4243 4244 <p>Writing DTDs can be done in many ways. The rules to build them if you need 4245 something permanent or something which can evolve over time can be radically 4246 different. Really complex DTDs like DocBook ones are flexible but quite 4247 harder to design. I will just focus on DTDs for a formats with a fixed simple 4248 structure. It is just a set of basic rules, and definitely not exhaustive nor 4249 usable for complex DTD design.</p> 4250 4251 <h4><a name="reference1">How to reference a DTD from a document</a>:</h4> 4252 4253 <p>Assuming the top element of the document is <code>spec</code> and the dtd 4254 is placed in the file <code>mydtd</code> in the subdirectory 4255 <code>dtds</code> of the directory from where the document were loaded:</p> 4256 4257 <p><code><!DOCTYPE spec SYSTEM "dtds/mydtd"></code></p> 4258 4259 <p>Notes:</p> 4260 <ul> 4261 <li>The system string is actually an URI-Reference (as defined in <a 4262 href="http://www.ietf.org/rfc/rfc2396.txt">RFC 2396</a>) so you can use a 4263 full URL string indicating the location of your DTD on the Web. This is a 4264 really good thing to do if you want others to validate your document.</li> 4265 <li>It is also possible to associate a <code>PUBLIC</code> identifier (a 4266 magic string) so that the DTD is looked up in catalogs on the client side 4267 without having to locate it on the web.</li> 4268 <li>A DTD contains a set of element and attribute declarations, but they 4269 don't define what the root of the document should be. This is explicitly 4270 told to the parser/validator as the first element of the 4271 <code>DOCTYPE</code> declaration.</li> 4272 </ul> 4273 4274 <h4><a name="Declaring2">Declaring elements</a>:</h4> 4275 4276 <p>The following declares an element <code>spec</code>:</p> 4277 4278 <p><code><!ELEMENT spec (front, body, back?)></code></p> 4279 4280 <p>It also expresses that the spec element contains one <code>front</code>, 4281 one <code>body</code> and one optional <code>back</code> children elements in 4282 this order. The declaration of one element of the structure and its content 4283 are done in a single declaration. Similarly the following declares 4284 <code>div1</code> elements:</p> 4285 4286 <p><code><!ELEMENT div1 (head, (p | list | note)*, div2?)></code></p> 4287 4288 <p>which means div1 contains one <code>head</code> then a series of optional 4289 <code>p</code>, <code>list</code>s and <code>note</code>s and then an 4290 optional <code>div2</code>. And last but not least an element can contain 4291 text:</p> 4292 4293 <p><code><!ELEMENT b (#PCDATA)></code></p> 4294 4295 <p><code>b</code> contains text or being of mixed content (text and elements 4296 in no particular order):</p> 4297 4298 <p><code><!ELEMENT p (#PCDATA|a|ul|b|i|em)*></code></p> 4299 4300 <p><code>p </code>can contain text or <code>a</code>, <code>ul</code>, 4301 <code>b</code>, <code>i </code>or <code>em</code> elements in no particular 4302 order.</p> 4303 4304 <h4><a name="Declaring1">Declaring attributes</a>:</h4> 4305 4306 <p>Again the attributes declaration includes their content definition:</p> 4307 4308 <p><code><!ATTLIST termdef name CDATA #IMPLIED></code></p> 4309 4310 <p>means that the element <code>termdef</code> can have a <code>name</code> 4311 attribute containing text (<code>CDATA</code>) and which is optional 4312 (<code>#IMPLIED</code>). The attribute value can also be defined within a 4313 set:</p> 4314 4315 <p><code><!ATTLIST list type (bullets|ordered|glossary) 4316 "ordered"></code></p> 4317 4318 <p>means <code>list</code> element have a <code>type</code> attribute with 3 4319 allowed values "bullets", "ordered" or "glossary" and which default to 4320 "ordered" if the attribute is not explicitly specified.</p> 4321 4322 <p>The content type of an attribute can be text (<code>CDATA</code>), 4323 anchor/reference/references 4324 (<code>ID</code>/<code>IDREF</code>/<code>IDREFS</code>), entity(ies) 4325 (<code>ENTITY</code>/<code>ENTITIES</code>) or name(s) 4326 (<code>NMTOKEN</code>/<code>NMTOKENS</code>). The following defines that a 4327 <code>chapter</code> element can have an optional <code>id</code> attribute 4328 of type <code>ID</code>, usable for reference from attribute of type 4329 IDREF:</p> 4330 4331 <p><code><!ATTLIST chapter id ID #IMPLIED></code></p> 4332 4333 <p>The last value of an attribute definition can be <code>#REQUIRED 4334 </code>meaning that the attribute has to be given, <code>#IMPLIED</code> 4335 meaning that it is optional, or the default value (possibly prefixed by 4336 <code>#FIXED</code> if it is the only allowed).</p> 4337 4338 <p>Notes:</p> 4339 <ul> 4340 <li>Usually the attributes pertaining to a given element are declared in a 4341 single expression, but it is just a convention adopted by a lot of DTD 4342 writers: 4343 <pre><!ATTLIST termdef 4344 id ID #REQUIRED 4345 name CDATA #IMPLIED></pre> 4346 <p>The previous construct defines both <code>id</code> and 4347 <code>name</code> attributes for the element <code>termdef</code>.</p> 4348 </li> 4349 </ul> 4350 4351 <h3><a name="Some1">Some examples</a></h3> 4352 4353 <p>The directory <code>test/valid/dtds/</code> in the libxml2 distribution 4354 contains some complex DTD examples. The example in the file 4355 <code>test/valid/dia.xml</code> shows an XML file where the simple DTD is 4356 directly included within the document.</p> 4357 4358 <h3><a name="validate1">How to validate</a></h3> 4359 4360 <p>The simplest way is to use the xmllint program included with libxml. The 4361 <code>--valid</code> option turns-on validation of the files given as input. 4362 For example the following validates a copy of the first revision of the XML 4363 1.0 specification:</p> 4364 4365 <p><code>xmllint --valid --noout test/valid/REC-xml-19980210.xml</code></p> 4366 4367 <p>the -- noout is used to disable output of the resulting tree.</p> 4368 4369 <p>The <code>--dtdvalid dtd</code> allows validation of the document(s) 4370 against a given DTD.</p> 4371 4372 <p>Libxml2 exports an API to handle DTDs and validation, check the <a 4373 href="http://xmlsoft.org/html/libxml-valid.html">associated 4374 description</a>.</p> 4375 4376 <h3><a name="Other1">Other resources</a></h3> 4377 4378 <p>DTDs are as old as SGML. So there may be a number of examples on-line, I 4379 will just list one for now, others pointers welcome:</p> 4380 <ul> 4381 <li><a href="http://www.xml101.com:8081/dtd/">XML-101 DTD</a></li> 4382 </ul> 4383 4384 <p>I suggest looking at the examples found under test/valid/dtd and any of 4385 the large number of books available on XML. The dia example in test/valid 4386 should be both simple and complete enough to allow you to build your own.</p> 4387 4388 <p></p> 4389 4390 <h2><a name="Memory">Memory Management</a></h2> 4391 4392 <p>Table of Content:</p> 4393 <ol> 4394 <li><a href="#General3">General overview</a></li> 4395 <li><a href="#setting">Setting libxml2 set of memory routines</a></li> 4396 <li><a href="#cleanup">Cleaning up after using the library</a></li> 4397 <li><a href="#Debugging">Debugging routines</a></li> 4398 <li><a href="#General4">General memory requirements</a></li> 4399 <li><a href="#Compacting">Returning memory to the kernel</a></li> 4400 </ol> 4401 4402 <h3><a name="General3">General overview</a></h3> 4403 4404 <p>The module <code><a 4405 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlmemory.h</a></code> 4406 provides the interfaces to the libxml2 memory system:</p> 4407 <ul> 4408 <li>libxml2 does not use the libc memory allocator directly but xmlFree(), 4409 xmlMalloc() and xmlRealloc()</li> 4410 <li>those routines can be reallocated to a specific set of routine, by 4411 default the libc ones i.e. free(), malloc() and realloc()</li> 4412 <li>the xmlmemory.c module includes a set of debugging routine</li> 4413 </ul> 4414 4415 <h3><a name="setting">Setting libxml2 set of memory routines</a></h3> 4416 4417 <p>It is sometimes useful to not use the default memory allocator, either for 4418 debugging, analysis or to implement a specific behaviour on memory management 4419 (like on embedded systems). Two function calls are available to do so:</p> 4420 <ul> 4421 <li><a href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemGet 4422 ()</a> which return the current set of functions in use by the parser</li> 4423 <li><a 4424 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemSetup()</a> 4425 which allow to set up a new set of memory allocation functions</li> 4426 </ul> 4427 4428 <p>Of course a call to xmlMemSetup() should probably be done before calling 4429 any other libxml2 routines (unless you are sure your allocations routines are 4430 compatibles).</p> 4431 4432 <h3><a name="cleanup">Cleaning up after using the library</a></h3> 4433 4434 <p>Libxml2 is not stateless, there is a few set of memory structures needing 4435 allocation before the parser is fully functional (some encoding structures 4436 for example). This also mean that once parsing is finished there is a tiny 4437 amount of memory (a few hundred bytes) which can be recollected if you don't 4438 reuse the library or any document built with it:</p> 4439 <ul> 4440 <li><a href="http://xmlsoft.org/html/libxml-parser.html">xmlCleanupParser 4441 ()</a> is a centralized routine to free the library state and data. Note 4442 that it won't deallocate any produced tree if any (use the xmlFreeDoc() 4443 and related routines for this). This should be called only when the library 4444 is not used anymore.</li> 4445 <li><a href="http://xmlsoft.org/html/libxml-parser.html">xmlInitParser 4446 ()</a> is the dual routine allowing to preallocate the parsing state 4447 which can be useful for example to avoid initialization reentrancy 4448 problems when using libxml2 in multithreaded applications</li> 4449 </ul> 4450 4451 <p>Generally xmlCleanupParser() is safe assuming no parsing is ongoing and 4452 no document is still being used, if needed the state will be rebuild at the 4453 next invocation of parser routines (or by xmlInitParser()), but be careful 4454 of the consequences in multithreaded applications.</p> 4455 4456 <h3><a name="Debugging">Debugging routines</a></h3> 4457 4458 <p>When configured using --with-mem-debug flag (off by default), libxml2 uses 4459 a set of memory allocation debugging routines keeping track of all allocated 4460 blocks and the location in the code where the routine was called. A couple of 4461 other debugging routines allow to dump the memory allocated infos to a file 4462 or call a specific routine when a given block number is allocated:</p> 4463 <ul> 4464 <li><a 4465 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMallocLoc()</a> 4466 <a 4467 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlReallocLoc()</a> 4468 and <a 4469 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemStrdupLoc()</a> 4470 are the memory debugging replacement allocation routines</li> 4471 <li><a href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemoryDump 4472 ()</a> dumps all the information about the allocated memory block lefts 4473 in the <code>.memdump</code> file</li> 4474 </ul> 4475 4476 <p>When developing libxml2 memory debug is enabled, the tests programs call 4477 xmlMemoryDump () and the "make test" regression tests will check for any 4478 memory leak during the full regression test sequence, this helps a lot 4479 ensuring that libxml2 does not leak memory and bullet proof memory 4480 allocations use (some libc implementations are known to be far too permissive 4481 resulting in major portability problems!).</p> 4482 4483 <p>If the .memdump reports a leak, it displays the allocation function and 4484 also tries to give some information about the content and structure of the 4485 allocated blocks left. This is sufficient in most cases to find the culprit, 4486 but not always. Assuming the allocation problem is reproducible, it is 4487 possible to find more easily:</p> 4488 <ol> 4489 <li>write down the block number xxxx not allocated</li> 4490 <li>export the environment variable XML_MEM_BREAKPOINT=xxxx , the easiest 4491 when using GDB is to simply give the command 4492 <p><code>set environment XML_MEM_BREAKPOINT xxxx</code></p> 4493 <p>before running the program.</p> 4494 </li> 4495 <li>run the program under a debugger and set a breakpoint on 4496 xmlMallocBreakpoint() a specific function called when this precise block 4497 is allocated</li> 4498 <li>when the breakpoint is reached you can then do a fine analysis of the 4499 allocation an step to see the condition resulting in the missing 4500 deallocation.</li> 4501 </ol> 4502 4503 <p>I used to use a commercial tool to debug libxml2 memory problems but after 4504 noticing that it was not detecting memory leaks that simple mechanism was 4505 used and proved extremely efficient until now. Lately I have also used <a 4506 href="http://developer.kde.org/~sewardj/">valgrind</a> with quite some 4507 success, it is tied to the i386 architecture since it works by emulating the 4508 processor and instruction set, it is slow but extremely efficient, i.e. it 4509 spot memory usage errors in a very precise way.</p> 4510 4511 <h3><a name="General4">General memory requirements</a></h3> 4512 4513 <p>How much libxml2 memory require ? It's hard to tell in average it depends 4514 of a number of things:</p> 4515 <ul> 4516 <li>the parser itself should work in a fixed amount of memory, except for 4517 information maintained about the stacks of names and entities locations. 4518 The I/O and encoding handlers will probably account for a few KBytes. 4519 This is true for both the XML and HTML parser (though the HTML parser 4520 need more state).</li> 4521 <li>If you are generating the DOM tree then memory requirements will grow 4522 nearly linear with the size of the data. In general for a balanced 4523 textual document the internal memory requirement is about 4 times the 4524 size of the UTF8 serialization of this document (example the XML-1.0 4525 recommendation is a bit more of 150KBytes and takes 650KBytes of main 4526 memory when parsed). Validation will add a amount of memory required for 4527 maintaining the external Dtd state which should be linear with the 4528 complexity of the content model defined by the Dtd</li> 4529 <li>If you need to work with fixed memory requirements or don't need the 4530 full DOM tree then using the <a href="xmlreader.html">xmlReader 4531 interface</a> is probably the best way to proceed, it still allows to 4532 validate or operate on subset of the tree if needed.</li> 4533 <li>If you don't care about the advanced features of libxml2 like 4534 validation, DOM, XPath or XPointer, don't use entities, need to work with 4535 fixed memory requirements, and try to get the fastest parsing possible 4536 then the SAX interface should be used, but it has known restrictions.</li> 4537 </ul> 4538 4539 <p></p> 4540 <h3><a name="Compacting">Returning memory to the kernel</a></h3> 4541 4542 <p>You may encounter that your process using libxml2 does not have a 4543 reduced memory usage although you freed the trees. This is because 4544 libxml2 allocates memory in a number of small chunks. When freeing one 4545 of those chunks, the OS may decide that giving this little memory back 4546 to the kernel will cause too much overhead and delay the operation. As 4547 all chunks are this small, they get actually freed but not returned to 4548 the kernel. On systems using glibc, there is a function call 4549 "malloc_trim" from malloc.h which does this missing operation (note that 4550 it is allowed to fail). Thus, after freeing your tree you may simply try 4551 "malloc_trim(0);" to really get the memory back. If your OS does not 4552 provide malloc_trim, try searching for a similar function.</p> 4553 <p></p> 4554 4555 <h2><a name="Encodings">Encodings support</a></h2> 4556 4557 <p>If you are not really familiar with Internationalization (usual shortcut 4558 is I18N) , Unicode, characters and glyphs, I suggest you read a <a 4559 href="http://www.tbray.org/ongoing/When/200x/2003/04/06/Unicode">presentation</a> 4560 by Tim Bray on Unicode and why you should care about it.</p> 4561 4562 <p>If you don't understand why <b>it does not make sense to have a string 4563 without knowing what encoding it uses</b>, then as Joel Spolsky said <a 4564 href="http://www.joelonsoftware.com/articles/Unicode.html">please do not 4565 write another line of code until you finish reading that article.</a>. It is 4566 a prerequisite to understand this page, and avoid a lot of problems with 4567 libxml2, XML or text processing in general.</p> 4568 4569 <p>Table of Content:</p> 4570 <ol> 4571 <li><a href="encoding.html#What">What does internationalization support 4572 mean ?</a></li> 4573 <li><a href="encoding.html#internal">The internal encoding, how and 4574 why</a></li> 4575 <li><a href="encoding.html#implemente">How is it implemented ?</a></li> 4576 <li><a href="encoding.html#Default">Default supported encodings</a></li> 4577 <li><a href="encoding.html#extend">How to extend the existing 4578 support</a></li> 4579 </ol> 4580 4581 <h3><a name="What">What does internationalization support mean ?</a></h3> 4582 4583 <p>XML was designed from the start to allow the support of any character set 4584 by using Unicode. Any conformant XML parser has to support the UTF-8 and 4585 UTF-16 default encodings which can both express the full unicode ranges. UTF8 4586 is a variable length encoding whose greatest points are to reuse the same 4587 encoding for ASCII and to save space for Western encodings, but it is a bit 4588 more complex to handle in practice. UTF-16 use 2 bytes per character (and 4589 sometimes combines two pairs), it makes implementation easier, but looks a 4590 bit overkill for Western languages encoding. Moreover the XML specification 4591 allows the document to be encoded in other encodings at the condition that 4592 they are clearly labeled as such. For example the following is a wellformed 4593 XML document encoded in ISO-8859-1 and using accentuated letters that we 4594 French like for both markup and content:</p> 4595 <pre><?xml version="1.0" encoding="ISO-8859-1"?> 4596 <très>là </très></pre> 4597 4598 <p>Having internationalization support in libxml2 means the following:</p> 4599 <ul> 4600 <li>the document is properly parsed</li> 4601 <li>information about it's encoding is saved</li> 4602 <li>it can be modified</li> 4603 <li>it can be saved in its original encoding</li> 4604 <li>it can also be saved in another encoding supported by libxml2 (for 4605 example straight UTF8 or even an ASCII form)</li> 4606 </ul> 4607 4608 <p>Another very important point is that the whole libxml2 API, with the 4609 exception of a few routines to read with a specific encoding or save to a 4610 specific encoding, is completely agnostic about the original encoding of the 4611 document.</p> 4612 4613 <p>It should be noted too that the HTML parser embedded in libxml2 now obey 4614 the same rules too, the following document will be (as of 2.2.2) handled in 4615 an internationalized fashion by libxml2 too:</p> 4616 <pre><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" 4617 "http://www.w3.org/TR/REC-html40/loose.dtd"> 4618 <html lang="fr"> 4619 <head> 4620 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"> 4621 </head> 4622 <body> 4623 <p>W3C crée des standards pour le Web.</body> 4624 </html></pre> 4625 4626 <h3><a name="internal">The internal encoding, how and why</a></h3> 4627 4628 <p>One of the core decisions was to force all documents to be converted to a 4629 default internal encoding, and that encoding to be UTF-8, here are the 4630 rationales for those choices:</p> 4631 <ul> 4632 <li>keeping the native encoding in the internal form would force the libxml 4633 users (or the code associated) to be fully aware of the encoding of the 4634 original document, for examples when adding a text node to a document, 4635 the content would have to be provided in the document encoding, i.e. the 4636 client code would have to check it before hand, make sure it's conformant 4637 to the encoding, etc ... Very hard in practice, though in some specific 4638 cases this may make sense.</li> 4639 <li>the second decision was which encoding. From the XML spec only UTF8 and 4640 UTF16 really makes sense as being the two only encodings for which there 4641 is mandatory support. UCS-4 (32 bits fixed size encoding) could be 4642 considered an intelligent choice too since it's a direct Unicode mapping 4643 support. I selected UTF-8 on the basis of efficiency and compatibility 4644 with surrounding software: 4645 <ul> 4646 <li>UTF-8 while a bit more complex to convert from/to (i.e. slightly 4647 more costly to import and export CPU wise) is also far more compact 4648 than UTF-16 (and UCS-4) for a majority of the documents I see it used 4649 for right now (RPM RDF catalogs, advogato data, various configuration 4650 file formats, etc.) and the key point for today's computer 4651 architecture is efficient uses of caches. If one nearly double the 4652 memory requirement to store the same amount of data, this will trash 4653 caches (main memory/external caches/internal caches) and my take is 4654 that this harms the system far more than the CPU requirements needed 4655 for the conversion to UTF-8</li> 4656 <li>Most of libxml2 version 1 users were using it with straight ASCII 4657 most of the time, doing the conversion with an internal encoding 4658 requiring all their code to be rewritten was a serious show-stopper 4659 for using UTF-16 or UCS-4.</li> 4660 <li>UTF-8 is being used as the de-facto internal encoding standard for 4661 related code like the <a href="http://www.pango.org/">pango</a> 4662 upcoming Gnome text widget, and a lot of Unix code (yet another place 4663 where Unix programmer base takes a different approach from Microsoft 4664 - they are using UTF-16)</li> 4665 </ul> 4666 </li> 4667 </ul> 4668 4669 <p>What does this mean in practice for the libxml2 user:</p> 4670 <ul> 4671 <li>xmlChar, the libxml2 data type is a byte, those bytes must be assembled 4672 as UTF-8 valid strings. The proper way to terminate an xmlChar * string 4673 is simply to append 0 byte, as usual.</li> 4674 <li>One just need to make sure that when using chars outside the ASCII set, 4675 the values has been properly converted to UTF-8</li> 4676 </ul> 4677 4678 <h3><a name="implemente">How is it implemented ?</a></h3> 4679 4680 <p>Let's describe how all this works within libxml, basically the I18N 4681 (internationalization) support get triggered only during I/O operation, i.e. 4682 when reading a document or saving one. Let's look first at the reading 4683 sequence:</p> 4684 <ol> 4685 <li>when a document is processed, we usually don't know the encoding, a 4686 simple heuristic allows to detect UTF-16 and UCS-4 from encodings where 4687 the ASCII range (0-0x7F) maps with ASCII</li> 4688 <li>the xml declaration if available is parsed, including the encoding 4689 declaration. At that point, if the autodetected encoding is different 4690 from the one declared a call to xmlSwitchEncoding() is issued.</li> 4691 <li>If there is no encoding declaration, then the input has to be in either 4692 UTF-8 or UTF-16, if it is not then at some point when processing the 4693 input, the converter/checker of UTF-8 form will raise an encoding error. 4694 You may end-up with a garbled document, or no document at all ! Example: 4695 <pre>~/XML -> ./xmllint err.xml 4696 err.xml:1: error: Input is not proper UTF-8, indicate encoding ! 4697 <très>là </très> 4698 ^ 4699 err.xml:1: error: Bytes: 0xE8 0x73 0x3E 0x6C 4700 <très>là </très> 4701 ^</pre> 4702 </li> 4703 <li>xmlSwitchEncoding() does an encoding name lookup, canonicalize it, and 4704 then search the default registered encoding converters for that encoding. 4705 If it's not within the default set and iconv() support has been compiled 4706 it, it will ask iconv for such an encoder. If this fails then the parser 4707 will report an error and stops processing: 4708 <pre>~/XML -> ./xmllint err2.xml 4709 err2.xml:1: error: Unsupported encoding UnsupportedEnc 4710 <?xml version="1.0" encoding="UnsupportedEnc"?> 4711 ^</pre> 4712 </li> 4713 <li>From that point the encoder processes progressively the input (it is 4714 plugged as a front-end to the I/O module) for that entity. It captures 4715 and converts on-the-fly the document to be parsed to UTF-8. The parser 4716 itself just does UTF-8 checking of this input and process it 4717 transparently. The only difference is that the encoding information has 4718 been added to the parsing context (more precisely to the input 4719 corresponding to this entity).</li> 4720 <li>The result (when using DOM) is an internal form completely in UTF-8 4721 with just an encoding information on the document node.</li> 4722 </ol> 4723 4724 <p>Ok then what happens when saving the document (assuming you 4725 collected/built an xmlDoc DOM like structure) ? It depends on the function 4726 called, xmlSaveFile() will just try to save in the original encoding, while 4727 xmlSaveFileTo() and xmlSaveFileEnc() can optionally save to a given 4728 encoding:</p> 4729 <ol> 4730 <li>if no encoding is given, libxml2 will look for an encoding value 4731 associated to the document and if it exists will try to save to that 4732 encoding, 4733 <p>otherwise everything is written in the internal form, i.e. UTF-8</p> 4734 </li> 4735 <li>so if an encoding was specified, either at the API level or on the 4736 document, libxml2 will again canonicalize the encoding name, lookup for a 4737 converter in the registered set or through iconv. If not found the 4738 function will return an error code</li> 4739 <li>the converter is placed before the I/O buffer layer, as another kind of 4740 buffer, then libxml2 will simply push the UTF-8 serialization to through 4741 that buffer, which will then progressively be converted and pushed onto 4742 the I/O layer.</li> 4743 <li>It is possible that the converter code fails on some input, for example 4744 trying to push an UTF-8 encoded Chinese character through the UTF-8 to 4745 ISO-8859-1 converter won't work. Since the encoders are progressive they 4746 will just report the error and the number of bytes converted, at that 4747 point libxml2 will decode the offending character, remove it from the 4748 buffer and replace it with the associated charRef encoding &#123; and 4749 resume the conversion. This guarantees that any document will be saved 4750 without losses (except for markup names where this is not legal, this is 4751 a problem in the current version, in practice avoid using non-ascii 4752 characters for tag or attribute names). A special "ascii" encoding name 4753 is used to save documents to a pure ascii form can be used when 4754 portability is really crucial</li> 4755 </ol> 4756 4757 <p>Here are a few examples based on the same test document and assumin a 4758 terminal using ISO-8859-1 as the text encoding:</p> 4759 <pre>~/XML -> ./xmllint isolat1 4760 <?xml version="1.0" encoding="ISO-8859-1"?> 4761 <très>là</très> 4762 ~/XML -> ./xmllint --encode UTF-8 isolat1 4763 <?xml version="1.0" encoding="UTF-8"?> 4764 <très>là </très> 4765 ~/XML -> </pre> 4766 4767 <p>The same processing is applied (and reuse most of the code) for HTML I18N 4768 processing. Looking up and modifying the content encoding is a bit more 4769 difficult since it is located in a <meta> tag under the <head>, 4770 so a couple of functions htmlGetMetaEncoding() and htmlSetMetaEncoding() have 4771 been provided. The parser also attempts to switch encoding on the fly when 4772 detecting such a tag on input. Except for that the processing is the same 4773 (and again reuses the same code).</p> 4774 4775 <h3><a name="Default">Default supported encodings</a></h3> 4776 4777 <p>libxml2 has a set of default converters for the following encodings 4778 (located in encoding.c):</p> 4779 <ol> 4780 <li>UTF-8 is supported by default (null handlers)</li> 4781 <li>UTF-16, both little and big endian</li> 4782 <li>ISO-Latin-1 (ISO-8859-1) covering most western languages</li> 4783 <li>ASCII, useful mostly for saving</li> 4784 <li>HTML, a specific handler for the conversion of UTF-8 to ASCII with HTML 4785 predefined entities like &copy; for the Copyright sign.</li> 4786 </ol> 4787 4788 <p>More over when compiled on an Unix platform with iconv support the full 4789 set of encodings supported by iconv can be instantly be used by libxml. On a 4790 linux machine with glibc-2.1 the list of supported encodings and aliases fill 4791 3 full pages, and include UCS-4, the full set of ISO-Latin encodings, and the 4792 various Japanese ones.</p> 4793 4794 <p>To convert from the UTF-8 values returned from the API to another encoding 4795 then it is possible to use the function provided from <a 4796 href="html/libxml-encoding.html">the encoding module</a> like <a 4797 href="html/libxml-encoding.html#UTF8Toisolat1">UTF8Toisolat1</a>, or use the 4798 POSIX <a 4799 href="http://www.opengroup.org/onlinepubs/009695399/functions/iconv.html">iconv()</a> 4800 API directly.</p> 4801 4802 <h4>Encoding aliases</h4> 4803 4804 <p>From 2.2.3, libxml2 has support to register encoding names aliases. The 4805 goal is to be able to parse document whose encoding is supported but where 4806 the name differs (for example from the default set of names accepted by 4807 iconv). The following functions allow to register and handle new aliases for 4808 existing encodings. Once registered libxml2 will automatically lookup the 4809 aliases when handling a document:</p> 4810 <ul> 4811 <li>int xmlAddEncodingAlias(const char *name, const char *alias);</li> 4812 <li>int xmlDelEncodingAlias(const char *alias);</li> 4813 <li>const char * xmlGetEncodingAlias(const char *alias);</li> 4814 <li>void xmlCleanupEncodingAliases(void);</li> 4815 </ul> 4816 4817 <h3><a name="extend">How to extend the existing support</a></h3> 4818 4819 <p>Well adding support for new encoding, or overriding one of the encoders 4820 (assuming it is buggy) should not be hard, just write input and output 4821 conversion routines to/from UTF-8, and register them using 4822 xmlNewCharEncodingHandler(name, xxxToUTF8, UTF8Toxxx), and they will be 4823 called automatically if the parser(s) encounter such an encoding name 4824 (register it uppercase, this will help). The description of the encoders, 4825 their arguments and expected return values are described in the encoding.h 4826 header.</p> 4827 4828 <h2><a name="IO">I/O Interfaces</a></h2> 4829 4830 <p>Table of Content:</p> 4831 <ol> 4832 <li><a href="#General1">General overview</a></li> 4833 <li><a href="#basic">The basic buffer type</a></li> 4834 <li><a href="#Input">Input I/O handlers</a></li> 4835 <li><a href="#Output">Output I/O handlers</a></li> 4836 <li><a href="#entities">The entities loader</a></li> 4837 <li><a href="#Example2">Example of customized I/O</a></li> 4838 </ol> 4839 4840 <h3><a name="General1">General overview</a></h3> 4841 4842 <p>The module <code><a 4843 href="http://xmlsoft.org/html/libxml-xmlio.html">xmlIO.h</a></code> provides 4844 the interfaces to the libxml2 I/O system. This consists of 4 main parts:</p> 4845 <ul> 4846 <li>Entities loader, this is a routine which tries to fetch the entities 4847 (files) based on their PUBLIC and SYSTEM identifiers. The default loader 4848 don't look at the public identifier since libxml2 do not maintain a 4849 catalog. You can redefine you own entity loader by using 4850 <code>xmlGetExternalEntityLoader()</code> and 4851 <code>xmlSetExternalEntityLoader()</code>. <a href="#entities">Check the 4852 example</a>.</li> 4853 <li>Input I/O buffers which are a commodity structure used by the parser(s) 4854 input layer to handle fetching the information to feed the parser. This 4855 provides buffering and is also a placeholder where the encoding 4856 converters to UTF8 are piggy-backed.</li> 4857 <li>Output I/O buffers are similar to the Input ones and fulfill similar 4858 task but when generating a serialization from a tree.</li> 4859 <li>A mechanism to register sets of I/O callbacks and associate them with 4860 specific naming schemes like the protocol part of the URIs. 4861 <p>This affect the default I/O operations and allows to use specific I/O 4862 handlers for certain names.</p> 4863 </li> 4864 </ul> 4865 4866 <p>The general mechanism used when loading http://rpmfind.net/xml.html for 4867 example in the HTML parser is the following:</p> 4868 <ol> 4869 <li>The default entity loader calls <code>xmlNewInputFromFile()</code> with 4870 the parsing context and the URI string.</li> 4871 <li>the URI string is checked against the existing registered handlers 4872 using their match() callback function, if the HTTP module was compiled 4873 in, it is registered and its match() function will succeeds</li> 4874 <li>the open() function of the handler is called and if successful will 4875 return an I/O Input buffer</li> 4876 <li>the parser will the start reading from this buffer and progressively 4877 fetch information from the resource, calling the read() function of the 4878 handler until the resource is exhausted</li> 4879 <li>if an encoding change is detected it will be installed on the input 4880 buffer, providing buffering and efficient use of the conversion 4881 routines</li> 4882 <li>once the parser has finished, the close() function of the handler is 4883 called once and the Input buffer and associated resources are 4884 deallocated.</li> 4885 </ol> 4886 4887 <p>The user defined callbacks are checked first to allow overriding of the 4888 default libxml2 I/O routines.</p> 4889 4890 <h3><a name="basic">The basic buffer type</a></h3> 4891 4892 <p>All the buffer manipulation handling is done using the 4893 <code>xmlBuffer</code> type define in <code><a 4894 href="http://xmlsoft.org/html/libxml-tree.html">tree.h</a> </code>which is a 4895 resizable memory buffer. The buffer allocation strategy can be selected to be 4896 either best-fit or use an exponential doubling one (CPU vs. memory use 4897 trade-off). The values are <code>XML_BUFFER_ALLOC_EXACT</code> and 4898 <code>XML_BUFFER_ALLOC_DOUBLEIT</code>, and can be set individually or on a 4899 system wide basis using <code>xmlBufferSetAllocationScheme()</code>. A number 4900 of functions allows to manipulate buffers with names starting with the 4901 <code>xmlBuffer...</code> prefix.</p> 4902 4903 <h3><a name="Input">Input I/O handlers</a></h3> 4904 4905 <p>An Input I/O handler is a simple structure 4906 <code>xmlParserInputBuffer</code> containing a context associated to the 4907 resource (file descriptor, or pointer to a protocol handler), the read() and 4908 close() callbacks to use and an xmlBuffer. And extra xmlBuffer and a charset 4909 encoding handler are also present to support charset conversion when 4910 needed.</p> 4911 4912 <h3><a name="Output">Output I/O handlers</a></h3> 4913 4914 <p>An Output handler <code>xmlOutputBuffer</code> is completely similar to an 4915 Input one except the callbacks are write() and close().</p> 4916 4917 <h3><a name="entities">The entities loader</a></h3> 4918 4919 <p>The entity loader resolves requests for new entities and create inputs for 4920 the parser. Creating an input from a filename or an URI string is done 4921 through the xmlNewInputFromFile() routine. The default entity loader do not 4922 handle the PUBLIC identifier associated with an entity (if any). So it just 4923 calls xmlNewInputFromFile() with the SYSTEM identifier (which is mandatory in 4924 XML).</p> 4925 4926 <p>If you want to hook up a catalog mechanism then you simply need to 4927 override the default entity loader, here is an example:</p> 4928 <pre>#include <libxml/xmlIO.h> 4929 4930 xmlExternalEntityLoader defaultLoader = NULL; 4931 4932 xmlParserInputPtr 4933 xmlMyExternalEntityLoader(const char *URL, const char *ID, 4934 xmlParserCtxtPtr ctxt) { 4935 xmlParserInputPtr ret; 4936 const char *fileID = NULL; 4937 /* lookup for the fileID depending on ID */ 4938 4939 ret = xmlNewInputFromFile(ctxt, fileID); 4940 if (ret != NULL) 4941 return(ret); 4942 if (defaultLoader != NULL) 4943 ret = defaultLoader(URL, ID, ctxt); 4944 return(ret); 4945 } 4946 4947 int main(..) { 4948 ... 4949 4950 /* 4951 * Install our own entity loader 4952 */ 4953 defaultLoader = xmlGetExternalEntityLoader(); 4954 xmlSetExternalEntityLoader(xmlMyExternalEntityLoader); 4955 4956 ... 4957 }</pre> 4958 4959 <h3><a name="Example2">Example of customized I/O</a></h3> 4960 4961 <p>This example come from <a href="http://xmlsoft.org/messages/0708.html">a 4962 real use case</a>, xmlDocDump() closes the FILE * passed by the application 4963 and this was a problem. The <a 4964 href="http://xmlsoft.org/messages/0711.html">solution</a> was to redefine a 4965 new output handler with the closing call deactivated:</p> 4966 <ol> 4967 <li>First define a new I/O output allocator where the output don't close 4968 the file: 4969 <pre>xmlOutputBufferPtr 4970 xmlOutputBufferCreateOwn(FILE *file, xmlCharEncodingHandlerPtr encoder) { 4971 xmlOutputBufferPtr ret; 4972 4973 if (xmlOutputCallbackInitialized == 0) 4974 xmlRegisterDefaultOutputCallbacks(); 4975 4976 if (file == NULL) return(NULL); 4977 ret = xmlAllocOutputBuffer(encoder); 4978 if (ret != NULL) { 4979 ret->context = file; 4980 ret->writecallback = xmlFileWrite; 4981 ret->closecallback = NULL; /* No close callback */ 4982 } 4983 return(ret); 4984 } </pre> 4985 </li> 4986 <li>And then use it to save the document: 4987 <pre>FILE *f; 4988 xmlOutputBufferPtr output; 4989 xmlDocPtr doc; 4990 int res; 4991 4992 f = ... 4993 doc = .... 4994 4995 output = xmlOutputBufferCreateOwn(f, NULL); 4996 res = xmlSaveFileTo(output, doc, NULL); 4997 </pre> 4998 </li> 4999 </ol> 5000 5001 <h2><a name="Catalog">Catalog support</a></h2> 5002 5003 <p>Table of Content:</p> 5004 <ol> 5005 <li><a href="General2">General overview</a></li> 5006 <li><a href="#definition">The definition</a></li> 5007 <li><a href="#Simple">Using catalogs</a></li> 5008 <li><a href="#Some">Some examples</a></li> 5009 <li><a href="#reference">How to tune catalog usage</a></li> 5010 <li><a href="#validate">How to debug catalog processing</a></li> 5011 <li><a href="#Declaring">How to create and maintain catalogs</a></li> 5012 <li><a href="#implemento">The implementor corner quick review of the 5013 API</a></li> 5014 <li><a href="#Other">Other resources</a></li> 5015 </ol> 5016 5017 <h3><a name="General2">General overview</a></h3> 5018 5019 <p>What is a catalog? Basically it's a lookup mechanism used when an entity 5020 (a file or a remote resource) references another entity. The catalog lookup 5021 is inserted between the moment the reference is recognized by the software 5022 (XML parser, stylesheet processing, or even images referenced for inclusion 5023 in a rendering) and the time where loading that resource is actually 5024 started.</p> 5025 5026 <p>It is basically used for 3 things:</p> 5027 <ul> 5028 <li>mapping from "logical" names, the public identifiers and a more 5029 concrete name usable for download (and URI). For example it can associate 5030 the logical name 5031 <p>"-//OASIS//DTD DocBook XML V4.1.2//EN"</p> 5032 <p>of the DocBook 4.1.2 XML DTD with the actual URL where it can be 5033 downloaded</p> 5034 <p>http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd</p> 5035 </li> 5036 <li>remapping from a given URL to another one, like an HTTP indirection 5037 saying that 5038 <p>"http://www.oasis-open.org/committes/tr.xsl"</p> 5039 <p>should really be looked at</p> 5040 <p>"http://www.oasis-open.org/committes/entity/stylesheets/base/tr.xsl"</p> 5041 </li> 5042 <li>providing a local cache mechanism allowing to load the entities 5043 associated to public identifiers or remote resources, this is a really 5044 important feature for any significant deployment of XML or SGML since it 5045 allows to avoid the aleas and delays associated to fetching remote 5046 resources.</li> 5047 </ul> 5048 5049 <h3><a name="definition">The definitions</a></h3> 5050 5051 <p>Libxml, as of 2.4.3 implements 2 kind of catalogs:</p> 5052 <ul> 5053 <li>the older SGML catalogs, the official spec is SGML Open Technical 5054 Resolution TR9401:1997, but is better understood by reading <a 5055 href="http://www.jclark.com/sp/catalog.htm">the SP Catalog page</a> from 5056 James Clark. This is relatively old and not the preferred mode of 5057 operation of libxml.</li> 5058 <li><a href="http://www.oasis-open.org/committees/entity/spec.html">XML 5059 Catalogs</a> is far more flexible, more recent, uses an XML syntax and 5060 should scale quite better. This is the default option of libxml.</li> 5061 </ul> 5062 5063 <p></p> 5064 5065 <h3><a name="Simple">Using catalog</a></h3> 5066 5067 <p>In a normal environment libxml2 will by default check the presence of a 5068 catalog in /etc/xml/catalog, and assuming it has been correctly populated, 5069 the processing is completely transparent to the document user. To take a 5070 concrete example, suppose you are authoring a DocBook document, this one 5071 starts with the following DOCTYPE definition:</p> 5072 <pre><?xml version='1.0'?> 5073 <!DOCTYPE book PUBLIC "-//Norman Walsh//DTD DocBk XML V3.1.4//EN" 5074 "http://nwalsh.com/docbook/xml/3.1.4/db3xml.dtd"></pre> 5075 5076 <p>When validating the document with libxml, the catalog will be 5077 automatically consulted to lookup the public identifier "-//Norman Walsh//DTD 5078 DocBk XML V3.1.4//EN" and the system identifier 5079 "http://nwalsh.com/docbook/xml/3.1.4/db3xml.dtd", and if these entities have 5080 been installed on your system and the catalogs actually point to them, libxml 5081 will fetch them from the local disk.</p> 5082 5083 <p style="font-size: 10pt"><strong>Note</strong>: Really don't use this 5084 DOCTYPE example it's a really old version, but is fine as an example.</p> 5085 5086 <p>Libxml2 will check the catalog each time that it is requested to load an 5087 entity, this includes DTD, external parsed entities, stylesheets, etc ... If 5088 your system is correctly configured all the authoring phase and processing 5089 should use only local files, even if your document stays portable because it 5090 uses the canonical public and system ID, referencing the remote document.</p> 5091 5092 <h3><a name="Some">Some examples:</a></h3> 5093 5094 <p>Here is a couple of fragments from XML Catalogs used in libxml2 early 5095 regression tests in <code>test/catalogs</code> :</p> 5096 <pre><?xml version="1.0"?> 5097 <!DOCTYPE catalog PUBLIC 5098 "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" 5099 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5100 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"> 5101 <public publicId="-//OASIS//DTD DocBook XML V4.1.2//EN" 5102 uri="http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"/> 5103 ...</pre> 5104 5105 <p>This is the beginning of a catalog for DocBook 4.1.2, XML Catalogs are 5106 written in XML, there is a specific namespace for catalog elements 5107 "urn:oasis:names:tc:entity:xmlns:xml:catalog". The first entry in this 5108 catalog is a <code>public</code> mapping it allows to associate a Public 5109 Identifier with an URI.</p> 5110 <pre>... 5111 <rewriteSystem systemIdStartString="http://www.oasis-open.org/docbook/" 5112 rewritePrefix="file:///usr/share/xml/docbook/"/> 5113 ...</pre> 5114 5115 <p>A <code>rewriteSystem</code> is a very powerful instruction, it says that 5116 any URI starting with a given prefix should be looked at another URI 5117 constructed by replacing the prefix with an new one. In effect this acts like 5118 a cache system for a full area of the Web. In practice it is extremely useful 5119 with a file prefix if you have installed a copy of those resources on your 5120 local system.</p> 5121 <pre>... 5122 <delegatePublic publicIdStartString="-//OASIS//DTD XML Catalog //" 5123 catalog="file:///usr/share/xml/docbook.xml"/> 5124 <delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook XML" 5125 catalog="file:///usr/share/xml/docbook.xml"/> 5126 <delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML" 5127 catalog="file:///usr/share/xml/docbook.xml"/> 5128 <delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/" 5129 catalog="file:///usr/share/xml/docbook.xml"/> 5130 <delegateURI uriStartString="http://www.oasis-open.org/docbook/" 5131 catalog="file:///usr/share/xml/docbook.xml"/> 5132 ...</pre> 5133 5134 <p>Delegation is the core features which allows to build a tree of catalogs, 5135 easier to maintain than a single catalog, based on Public Identifier, System 5136 Identifier or URI prefixes it instructs the catalog software to look up 5137 entries in another resource. This feature allow to build hierarchies of 5138 catalogs, the set of entries presented should be sufficient to redirect the 5139 resolution of all DocBook references to the specific catalog in 5140 <code>/usr/share/xml/docbook.xml</code> this one in turn could delegate all 5141 references for DocBook 4.2.1 to a specific catalog installed at the same time 5142 as the DocBook resources on the local machine.</p> 5143 5144 <h3><a name="reference">How to tune catalog usage:</a></h3> 5145 5146 <p>The user can change the default catalog behaviour by redirecting queries 5147 to its own set of catalogs, this can be done by setting the 5148 <code>XML_CATALOG_FILES</code> environment variable to a list of catalogs, an 5149 empty one should deactivate loading the default <code>/etc/xml/catalog</code> 5150 default catalog</p> 5151 5152 <h3><a name="validate">How to debug catalog processing:</a></h3> 5153 5154 <p>Setting up the <code>XML_DEBUG_CATALOG</code> environment variable will 5155 make libxml2 output debugging information for each catalog operations, for 5156 example:</p> 5157 <pre>orchis:~/XML -> xmllint --memory --noout test/ent2 5158 warning: failed to load external entity "title.xml" 5159 orchis:~/XML -> export XML_DEBUG_CATALOG= 5160 orchis:~/XML -> xmllint --memory --noout test/ent2 5161 Failed to parse catalog /etc/xml/catalog 5162 Failed to parse catalog /etc/xml/catalog 5163 warning: failed to load external entity "title.xml" 5164 Catalogs cleanup 5165 orchis:~/XML -> </pre> 5166 5167 <p>The test/ent2 references an entity, running the parser from memory makes 5168 the base URI unavailable and the the "title.xml" entity cannot be loaded. 5169 Setting up the debug environment variable allows to detect that an attempt is 5170 made to load the <code>/etc/xml/catalog</code> but since it's not present the 5171 resolution fails.</p> 5172 5173 <p>But the most advanced way to debug XML catalog processing is to use the 5174 <strong>xmlcatalog</strong> command shipped with libxml2, it allows to load 5175 catalogs and make resolution queries to see what is going on. This is also 5176 used for the regression tests:</p> 5177 <pre>orchis:~/XML -> ./xmlcatalog test/catalogs/docbook.xml \ 5178 "-//OASIS//DTD DocBook XML V4.1.2//EN" 5179 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd 5180 orchis:~/XML -> </pre> 5181 5182 <p>For debugging what is going on, adding one -v flags increase the verbosity 5183 level to indicate the processing done (adding a second flag also indicate 5184 what elements are recognized at parsing):</p> 5185 <pre>orchis:~/XML -> ./xmlcatalog -v test/catalogs/docbook.xml \ 5186 "-//OASIS//DTD DocBook XML V4.1.2//EN" 5187 Parsing catalog test/catalogs/docbook.xml's content 5188 Found public match -//OASIS//DTD DocBook XML V4.1.2//EN 5189 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd 5190 Catalogs cleanup 5191 orchis:~/XML -> </pre> 5192 5193 <p>A shell interface is also available to debug and process multiple queries 5194 (and for regression tests):</p> 5195 <pre>orchis:~/XML -> ./xmlcatalog -shell test/catalogs/docbook.xml \ 5196 "-//OASIS//DTD DocBook XML V4.1.2//EN" 5197 > help 5198 Commands available: 5199 public PublicID: make a PUBLIC identifier lookup 5200 system SystemID: make a SYSTEM identifier lookup 5201 resolve PublicID SystemID: do a full resolver lookup 5202 add 'type' 'orig' 'replace' : add an entry 5203 del 'values' : remove values 5204 dump: print the current catalog state 5205 debug: increase the verbosity level 5206 quiet: decrease the verbosity level 5207 exit: quit the shell 5208 > public "-//OASIS//DTD DocBook XML V4.1.2//EN" 5209 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd 5210 > quit 5211 orchis:~/XML -> </pre> 5212 5213 <p>This should be sufficient for most debugging purpose, this was actually 5214 used heavily to debug the XML Catalog implementation itself.</p> 5215 5216 <h3><a name="Declaring">How to create and maintain</a> catalogs:</h3> 5217 5218 <p>Basically XML Catalogs are XML files, you can either use XML tools to 5219 manage them or use <strong>xmlcatalog</strong> for this. The basic step is 5220 to create a catalog the -create option provide this facility:</p> 5221 <pre>orchis:~/XML -> ./xmlcatalog --create tst.xml 5222 <?xml version="1.0"?> 5223 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" 5224 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5225 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"/> 5226 orchis:~/XML -> </pre> 5227 5228 <p>By default xmlcatalog does not overwrite the original catalog and save the 5229 result on the standard output, this can be overridden using the -noout 5230 option. The <code>-add</code> command allows to add entries in the 5231 catalog:</p> 5232 <pre>orchis:~/XML -> ./xmlcatalog --noout --create --add "public" \ 5233 "-//OASIS//DTD DocBook XML V4.1.2//EN" \ 5234 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd tst.xml 5235 orchis:~/XML -> cat tst.xml 5236 <?xml version="1.0"?> 5237 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" \ 5238 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5239 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"> 5240 <public publicId="-//OASIS//DTD DocBook XML V4.1.2//EN" 5241 uri="http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"/> 5242 </catalog> 5243 orchis:~/XML -> </pre> 5244 5245 <p>The <code>-add</code> option will always take 3 parameters even if some of 5246 the XML Catalog constructs (like nextCatalog) will have only a single 5247 argument, just pass a third empty string, it will be ignored.</p> 5248 5249 <p>Similarly the <code>-del</code> option remove matching entries from the 5250 catalog:</p> 5251 <pre>orchis:~/XML -> ./xmlcatalog --del \ 5252 "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" tst.xml 5253 <?xml version="1.0"?> 5254 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" 5255 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5256 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"/> 5257 orchis:~/XML -> </pre> 5258 5259 <p>The catalog is now empty. Note that the matching of <code>-del</code> is 5260 exact and would have worked in a similar fashion with the Public ID 5261 string.</p> 5262 5263 <p>This is rudimentary but should be sufficient to manage a not too complex 5264 catalog tree of resources.</p> 5265 5266 <h3><a name="implemento">The implementor corner quick review of the 5267 API:</a></h3> 5268 5269 <p>First, and like for every other module of libxml, there is an 5270 automatically generated <a href="html/libxml-catalog.html">API page for 5271 catalog support</a>.</p> 5272 5273 <p>The header for the catalog interfaces should be included as:</p> 5274 <pre>#include <libxml/catalog.h></pre> 5275 5276 <p>The API is voluntarily kept very simple. First it is not obvious that 5277 applications really need access to it since it is the default behaviour of 5278 libxml2 (Note: it is possible to completely override libxml2 default catalog 5279 by using <a href="html/libxml-parser.html">xmlSetExternalEntityLoader</a> to 5280 plug an application specific resolver).</p> 5281 5282 <p>Basically libxml2 support 2 catalog lists:</p> 5283 <ul> 5284 <li>the default one, global shared by all the application</li> 5285 <li>a per-document catalog, this one is built if the document uses the 5286 <code>oasis-xml-catalog</code> PIs to specify its own catalog list, it is 5287 associated to the parser context and destroyed when the parsing context 5288 is destroyed.</li> 5289 </ul> 5290 5291 <p>the document one will be used first if it exists.</p> 5292 5293 <h4>Initialization routines:</h4> 5294 5295 <p>xmlInitializeCatalog(), xmlLoadCatalog() and xmlLoadCatalogs() should be 5296 used at startup to initialize the catalog, if the catalog should be 5297 initialized with specific values xmlLoadCatalog() or xmlLoadCatalogs() 5298 should be called before xmlInitializeCatalog() which would otherwise do a 5299 default initialization first.</p> 5300 5301 <p>The xmlCatalogAddLocal() call is used by the parser to grow the document 5302 own catalog list if needed.</p> 5303 5304 <h4>Preferences setup:</h4> 5305 5306 <p>The XML Catalog spec requires the possibility to select default 5307 preferences between public and system delegation, 5308 xmlCatalogSetDefaultPrefer() allows this, xmlCatalogSetDefaults() and 5309 xmlCatalogGetDefaults() allow to control if XML Catalogs resolution should 5310 be forbidden, allowed for global catalog, for document catalog or both, the 5311 default is to allow both.</p> 5312 5313 <p>And of course xmlCatalogSetDebug() allows to generate debug messages 5314 (through the xmlGenericError() mechanism).</p> 5315 5316 <h4>Querying routines:</h4> 5317 5318 <p>xmlCatalogResolve(), xmlCatalogResolveSystem(), xmlCatalogResolvePublic() 5319 and xmlCatalogResolveURI() are relatively explicit if you read the XML 5320 Catalog specification they correspond to section 7 algorithms, they should 5321 also work if you have loaded an SGML catalog with a simplified semantic.</p> 5322 5323 <p>xmlCatalogLocalResolve() and xmlCatalogLocalResolveURI() are the same but 5324 operate on the document catalog list</p> 5325 5326 <h4>Cleanup and Miscellaneous:</h4> 5327 5328 <p>xmlCatalogCleanup() free-up the global catalog, xmlCatalogFreeLocal() is 5329 the per-document equivalent.</p> 5330 5331 <p>xmlCatalogAdd() and xmlCatalogRemove() are used to dynamically modify the 5332 first catalog in the global list, and xmlCatalogDump() allows to dump a 5333 catalog state, those routines are primarily designed for xmlcatalog, I'm not 5334 sure that exposing more complex interfaces (like navigation ones) would be 5335 really useful.</p> 5336 5337 <p>The xmlParseCatalogFile() is a function used to load XML Catalog files, 5338 it's similar as xmlParseFile() except it bypass all catalog lookups, it's 5339 provided because this functionality may be useful for client tools.</p> 5340 5341 <h4>threaded environments:</h4> 5342 5343 <p>Since the catalog tree is built progressively, some care has been taken to 5344 try to avoid troubles in multithreaded environments. The code is now thread 5345 safe assuming that the libxml2 library has been compiled with threads 5346 support.</p> 5347 5348 <p></p> 5349 5350 <h3><a name="Other">Other resources</a></h3> 5351 5352 <p>The XML Catalog specification is relatively recent so there isn't much 5353 literature to point at:</p> 5354 <ul> 5355 <li>You can find a good rant from Norm Walsh about <a 5356 href="http://www.arbortext.com/Think_Tank/XML_Resources/Issue_Three/issue_three.html">the 5357 need for catalogs</a>, it provides a lot of context information even if 5358 I don't agree with everything presented. Norm also wrote a more recent 5359 article <a 5360 href="http://wwws.sun.com/software/xml/developers/resolver/article/">XML 5361 entities and URI resolvers</a> describing them.</li> 5362 <li>An <a href="http://home.ccil.org/~cowan/XML/XCatalog.html">old XML 5363 catalog proposal</a> from John Cowan</li> 5364 <li>The <a href="http://www.rddl.org/">Resource Directory Description 5365 Language</a> (RDDL) another catalog system but more oriented toward 5366 providing metadata for XML namespaces.</li> 5367 <li>the page from the OASIS Technical <a 5368 href="http://www.oasis-open.org/committees/entity/">Committee on Entity 5369 Resolution</a> who maintains XML Catalog, you will find pointers to the 5370 specification update, some background and pointers to others tools 5371 providing XML Catalog support</li> 5372 <li>There is a <a href="buildDocBookCatalog">shell script</a> to generate 5373 XML Catalogs for DocBook 4.1.2 . If it can write to the /etc/xml/ 5374 directory, it will set-up /etc/xml/catalog and /etc/xml/docbook based on 5375 the resources found on the system. Otherwise it will just create 5376 ~/xmlcatalog and ~/dbkxmlcatalog and doing: 5377 <p><code>export XML_CATALOG_FILES=$HOME/xmlcatalog</code></p> 5378 <p>should allow to process DocBook documentations without requiring 5379 network accesses for the DTD or stylesheets</p> 5380 </li> 5381 <li>I have uploaded <a href="ftp://xmlsoft.org/libxml2/test/dbk412catalog.tar.gz">a 5382 small tarball</a> containing XML Catalogs for DocBook 4.1.2 which seems 5383 to work fine for me too</li> 5384 <li>The <a href="http://www.xmlsoft.org/xmlcatalog_man.html">xmlcatalog 5385 manual page</a></li> 5386 </ul> 5387 5388 <p>If you have suggestions for corrections or additions, simply contact 5389 me:</p> 5390 5391 <h2><a name="library">The parser interfaces</a></h2> 5392 5393 <p>This section is directly intended to help programmers getting bootstrapped 5394 using the XML tollkit from the C language. It is not intended to be 5395 extensive. I hope the automatically generated documents will provide the 5396 completeness required, but as a separate set of documents. The interfaces of 5397 the XML parser are by principle low level, Those interested in a higher level 5398 API should <a href="#DOM">look at DOM</a>.</p> 5399 5400 <p>The <a href="html/libxml-parser.html">parser interfaces for XML</a> are 5401 separated from the <a href="html/libxml-htmlparser.html">HTML parser 5402 interfaces</a>. Let's have a look at how the XML parser can be called:</p> 5403 5404 <h3><a name="Invoking">Invoking the parser : the pull method</a></h3> 5405 5406 <p>Usually, the first thing to do is to read an XML input. The parser accepts 5407 documents either from in-memory strings or from files. The functions are 5408 defined in "parser.h":</p> 5409 <dl> 5410 <dt><code>xmlDocPtr xmlParseMemory(char *buffer, int size);</code></dt> 5411 <dd><p>Parse a null-terminated string containing the document.</p> 5412 </dd> 5413 </dl> 5414 <dl> 5415 <dt><code>xmlDocPtr xmlParseFile(const char *filename);</code></dt> 5416 <dd><p>Parse an XML document contained in a (possibly compressed) 5417 file.</p> 5418 </dd> 5419 </dl> 5420 5421 <p>The parser returns a pointer to the document structure (or NULL in case of 5422 failure).</p> 5423 5424 <h3 id="Invoking1">Invoking the parser: the push method</h3> 5425 5426 <p>In order for the application to keep the control when the document is 5427 being fetched (which is common for GUI based programs) libxml2 provides a 5428 push interface, too, as of version 1.8.3. Here are the interface 5429 functions:</p> 5430 <pre>xmlParserCtxtPtr xmlCreatePushParserCtxt(xmlSAXHandlerPtr sax, 5431 void *user_data, 5432 const char *chunk, 5433 int size, 5434 const char *filename); 5435 int xmlParseChunk (xmlParserCtxtPtr ctxt, 5436 const char *chunk, 5437 int size, 5438 int terminate);</pre> 5439 5440 <p>and here is a simple example showing how to use the interface:</p> 5441 <pre> FILE *f; 5442 5443 f = fopen(filename, "r"); 5444 if (f != NULL) { 5445 int res, size = 1024; 5446 char chars[1024]; 5447 xmlParserCtxtPtr ctxt; 5448 5449 res = fread(chars, 1, 4, f); 5450 if (res > 0) { 5451 ctxt = xmlCreatePushParserCtxt(NULL, NULL, 5452 chars, res, filename); 5453 while ((res = fread(chars, 1, size, f)) > 0) { 5454 xmlParseChunk(ctxt, chars, res, 0); 5455 } 5456 xmlParseChunk(ctxt, chars, 0, 1); 5457 doc = ctxt->myDoc; 5458 xmlFreeParserCtxt(ctxt); 5459 } 5460 }</pre> 5461 5462 <p>The HTML parser embedded into libxml2 also has a push interface; the 5463 functions are just prefixed by "html" rather than "xml".</p> 5464 5465 <h3 id="Invoking2">Invoking the parser: the SAX interface</h3> 5466 5467 <p>The tree-building interface makes the parser memory-hungry, first loading 5468 the document in memory and then building the tree itself. Reading a document 5469 without building the tree is possible using the SAX interfaces (see SAX.h and 5470 <a href="http://www.daa.com.au/~james/gnome/xml-sax/xml-sax.html">James 5471 Henstridge's documentation</a>). Note also that the push interface can be 5472 limited to SAX: just use the two first arguments of 5473 <code>xmlCreatePushParserCtxt()</code>.</p> 5474 5475 <h3><a name="Building">Building a tree from scratch</a></h3> 5476 5477 <p>The other way to get an XML tree in memory is by building it. Basically 5478 there is a set of functions dedicated to building new elements. (These are 5479 also described in <libxml/tree.h>.) For example, here is a piece of 5480 code that produces the XML document used in the previous examples:</p> 5481 <pre> #include <libxml/tree.h> 5482 xmlDocPtr doc; 5483 xmlNodePtr tree, subtree; 5484 5485 doc = xmlNewDoc("1.0"); 5486 doc->children = xmlNewDocNode(doc, NULL, "EXAMPLE", NULL); 5487 xmlSetProp(doc->children, "prop1", "gnome is great"); 5488 xmlSetProp(doc->children, "prop2", "& linux too"); 5489 tree = xmlNewChild(doc->children, NULL, "head", NULL); 5490 subtree = xmlNewChild(tree, NULL, "title", "Welcome to Gnome"); 5491 tree = xmlNewChild(doc->children, NULL, "chapter", NULL); 5492 subtree = xmlNewChild(tree, NULL, "title", "The Linux adventure"); 5493 subtree = xmlNewChild(tree, NULL, "p", "bla bla bla ..."); 5494 subtree = xmlNewChild(tree, NULL, "image", NULL); 5495 xmlSetProp(subtree, "href", "linus.gif");</pre> 5496 5497 <p>Not really rocket science ...</p> 5498 5499 <h3><a name="Traversing">Traversing the tree</a></h3> 5500 5501 <p>Basically by <a href="html/libxml-tree.html">including "tree.h"</a> your 5502 code has access to the internal structure of all the elements of the tree. 5503 The names should be somewhat simple like <strong>parent</strong>, 5504 <strong>children</strong>, <strong>next</strong>, <strong>prev</strong>, 5505 <strong>properties</strong>, etc... For example, still with the previous 5506 example:</p> 5507 <pre><code>doc->children->children->children</code></pre> 5508 5509 <p>points to the title element,</p> 5510 <pre>doc->children->children->next->children->children</pre> 5511 5512 <p>points to the text node containing the chapter title "The Linux 5513 adventure".</p> 5514 5515 <p><strong>NOTE</strong>: XML allows <em>PI</em>s and <em>comments</em> to be 5516 present before the document root, so <code>doc->children</code> may point 5517 to an element which is not the document Root Element; a function 5518 <code>xmlDocGetRootElement()</code> was added for this purpose.</p> 5519 5520 <h3><a name="Modifying">Modifying the tree</a></h3> 5521 5522 <p>Functions are provided for reading and writing the document content. Here 5523 is an excerpt from the <a href="html/libxml-tree.html">tree API</a>:</p> 5524 <dl> 5525 <dt><code>xmlAttrPtr xmlSetProp(xmlNodePtr node, const xmlChar *name, const 5526 xmlChar *value);</code></dt> 5527 <dd><p>This sets (or changes) an attribute carried by an ELEMENT node. 5528 The value can be NULL.</p> 5529 </dd> 5530 </dl> 5531 <dl> 5532 <dt><code>const xmlChar *xmlGetProp(xmlNodePtr node, const xmlChar 5533 *name);</code></dt> 5534 <dd><p>This function returns a pointer to new copy of the property 5535 content. Note that the user must deallocate the result.</p> 5536 </dd> 5537 </dl> 5538 5539 <p>Two functions are provided for reading and writing the text associated 5540 with elements:</p> 5541 <dl> 5542 <dt><code>xmlNodePtr xmlStringGetNodeList(xmlDocPtr doc, const xmlChar 5543 *value);</code></dt> 5544 <dd><p>This function takes an "external" string and converts it to one 5545 text node or possibly to a list of entity and text nodes. All 5546 non-predefined entity references like &Gnome; will be stored 5547 internally as entity nodes, hence the result of the function may not be 5548 a single node.</p> 5549 </dd> 5550 </dl> 5551 <dl> 5552 <dt><code>xmlChar *xmlNodeListGetString(xmlDocPtr doc, xmlNodePtr list, int 5553 inLine);</code></dt> 5554 <dd><p>This function is the inverse of 5555 <code>xmlStringGetNodeList()</code>. It generates a new string 5556 containing the content of the text and entity nodes. Note the extra 5557 argument inLine. If this argument is set to 1, the function will expand 5558 entity references. For example, instead of returning the &Gnome; 5559 XML encoding in the string, it will substitute it with its value (say, 5560 "GNU Network Object Model Environment").</p> 5561 </dd> 5562 </dl> 5563 5564 <h3><a name="Saving">Saving a tree</a></h3> 5565 5566 <p>Basically 3 options are possible:</p> 5567 <dl> 5568 <dt><code>void xmlDocDumpMemory(xmlDocPtr cur, xmlChar**mem, int 5569 *size);</code></dt> 5570 <dd><p>Returns a buffer into which the document has been saved.</p> 5571 </dd> 5572 </dl> 5573 <dl> 5574 <dt><code>extern void xmlDocDump(FILE *f, xmlDocPtr doc);</code></dt> 5575 <dd><p>Dumps a document to an open file descriptor.</p> 5576 </dd> 5577 </dl> 5578 <dl> 5579 <dt><code>int xmlSaveFile(const char *filename, xmlDocPtr cur);</code></dt> 5580 <dd><p>Saves the document to a file. In this case, the compression 5581 interface is triggered if it has been turned on.</p> 5582 </dd> 5583 </dl> 5584 5585 <h3><a name="Compressio">Compression</a></h3> 5586 5587 <p>The library transparently handles compression when doing file-based 5588 accesses. The level of compression on saves can be turned on either globally 5589 or individually for one file:</p> 5590 <dl> 5591 <dt><code>int xmlGetDocCompressMode (xmlDocPtr doc);</code></dt> 5592 <dd><p>Gets the document compression ratio (0-9).</p> 5593 </dd> 5594 </dl> 5595 <dl> 5596 <dt><code>void xmlSetDocCompressMode (xmlDocPtr doc, int mode);</code></dt> 5597 <dd><p>Sets the document compression ratio.</p> 5598 </dd> 5599 </dl> 5600 <dl> 5601 <dt><code>int xmlGetCompressMode(void);</code></dt> 5602 <dd><p>Gets the default compression ratio.</p> 5603 </dd> 5604 </dl> 5605 <dl> 5606 <dt><code>void xmlSetCompressMode(int mode);</code></dt> 5607 <dd><p>Sets the default compression ratio.</p> 5608 </dd> 5609 </dl> 5610 5611 <h2><a name="Entities">Entities or no entities</a></h2> 5612 5613 <p>Entities in principle are similar to simple C macros. An entity defines an 5614 abbreviation for a given string that you can reuse many times throughout the 5615 content of your document. Entities are especially useful when a given string 5616 may occur frequently within a document, or to confine the change needed to a 5617 document to a restricted area in the internal subset of the document (at the 5618 beginning). Example:</p> 5619 <pre>1 <?xml version="1.0"?> 5620 2 <!DOCTYPE EXAMPLE SYSTEM "example.dtd" [ 5621 3 <!ENTITY xml "Extensible Markup Language"> 5622 4 ]> 5623 5 <EXAMPLE> 5624 6 &xml; 5625 7 </EXAMPLE></pre> 5626 5627 <p>Line 3 declares the xml entity. Line 6 uses the xml entity, by prefixing 5628 its name with '&' and following it by ';' without any spaces added. There 5629 are 5 predefined entities in libxml2 allowing you to escape characters with 5630 predefined meaning in some parts of the xml document content: 5631 <strong>&lt;</strong> for the character '<', <strong>&gt;</strong> 5632 for the character '>', <strong>&apos;</strong> for the character ''', 5633 <strong>&quot;</strong> for the character '"', and 5634 <strong>&amp;</strong> for the character '&'.</p> 5635 5636 <p>One of the problems related to entities is that you may want the parser to 5637 substitute an entity's content so that you can see the replacement text in 5638 your application. Or you may prefer to keep entity references as such in the 5639 content to be able to save the document back without losing this usually 5640 precious information (if the user went through the pain of explicitly 5641 defining entities, he may have a a rather negative attitude if you blindly 5642 substitute them as saving time). The <a 5643 href="html/libxml-parser.html#xmlSubstituteEntitiesDefault">xmlSubstituteEntitiesDefault()</a> 5644 function allows you to check and change the behaviour, which is to not 5645 substitute entities by default.</p> 5646 5647 <p>Here is the DOM tree built by libxml2 for the previous document in the 5648 default case:</p> 5649 <pre>/gnome/src/gnome-xml -> ./xmllint --debug test/ent1 5650 DOCUMENT 5651 version=1.0 5652 ELEMENT EXAMPLE 5653 TEXT 5654 content= 5655 ENTITY_REF 5656 INTERNAL_GENERAL_ENTITY xml 5657 content=Extensible Markup Language 5658 TEXT 5659 content=</pre> 5660 5661 <p>And here is the result when substituting entities:</p> 5662 <pre>/gnome/src/gnome-xml -> ./tester --debug --noent test/ent1 5663 DOCUMENT 5664 version=1.0 5665 ELEMENT EXAMPLE 5666 TEXT 5667 content= Extensible Markup Language</pre> 5668 5669 <p>So, entities or no entities? Basically, it depends on your use case. I 5670 suggest that you keep the non-substituting default behaviour and avoid using 5671 entities in your XML document or data if you are not willing to handle the 5672 entity references elements in the DOM tree.</p> 5673 5674 <p>Note that at save time libxml2 enforces the conversion of the predefined 5675 entities where necessary to prevent well-formedness problems, and will also 5676 transparently replace those with chars (i.e. it will not generate entity 5677 reference elements in the DOM tree or call the reference() SAX callback when 5678 finding them in the input).</p> 5679 5680 <p><span style="background-color: #FF0000">WARNING</span>: handling entities 5681 on top of the libxml2 SAX interface is difficult!!! If you plan to use 5682 non-predefined entities in your documents, then the learning curve to handle 5683 then using the SAX API may be long. If you plan to use complex documents, I 5684 strongly suggest you consider using the DOM interface instead and let libxml 5685 deal with the complexity rather than trying to do it yourself.</p> 5686 5687 <h2><a name="Namespaces">Namespaces</a></h2> 5688 5689 <p>The libxml2 library implements <a 5690 href="http://www.w3.org/TR/REC-xml-names/">XML namespaces</a> support by 5691 recognizing namespace constructs in the input, and does namespace lookup 5692 automatically when building the DOM tree. A namespace declaration is 5693 associated with an in-memory structure and all elements or attributes within 5694 that namespace point to it. Hence testing the namespace is a simple and fast 5695 equality operation at the user level.</p> 5696 5697 <p>I suggest that people using libxml2 use a namespace, and declare it in the 5698 root element of their document as the default namespace. Then they don't need 5699 to use the prefix in the content but we will have a basis for future semantic 5700 refinement and merging of data from different sources. This doesn't increase 5701 the size of the XML output significantly, but significantly increases its 5702 value in the long-term. Example:</p> 5703 <pre><mydoc xmlns="http://mydoc.example.org/schemas/"> 5704 <elem1>...</elem1> 5705 <elem2>...</elem2> 5706 </mydoc></pre> 5707 5708 <p>The namespace value has to be an absolute URL, but the URL doesn't have to 5709 point to any existing resource on the Web. It will bind all the element and 5710 attributes with that URL. I suggest to use an URL within a domain you 5711 control, and that the URL should contain some kind of version information if 5712 possible. For example, <code>"http://www.gnome.org/gnumeric/1.0/"</code> is a 5713 good namespace scheme.</p> 5714 5715 <p>Then when you load a file, make sure that a namespace carrying the 5716 version-independent prefix is installed on the root element of your document, 5717 and if the version information don't match something you know, warn the user 5718 and be liberal in what you accept as the input. Also do *not* try to base 5719 namespace checking on the prefix value. <foo:text> may be exactly the 5720 same as <bar:text> in another document. What really matters is the URI 5721 associated with the element or the attribute, not the prefix string (which is 5722 just a shortcut for the full URI). In libxml, element and attributes have an 5723 <code>ns</code> field pointing to an xmlNs structure detailing the namespace 5724 prefix and its URI.</p> 5725 5726 <p>@@Interfaces@@</p> 5727 <pre>xmlNodePtr node; 5728 if(!strncmp(node->name,"mytag",5) 5729 && node->ns 5730 && !strcmp(node->ns->href,"http://www.mysite.com/myns/1.0")) { 5731 ... 5732 }</pre> 5733 5734 <p>Usually people object to using namespaces together with validity checking. 5735 I will try to make sure that using namespaces won't break validity checking, 5736 so even if you plan to use or currently are using validation I strongly 5737 suggest adding namespaces to your document. A default namespace scheme 5738 <code>xmlns="http://...."</code> should not break validity even on less 5739 flexible parsers. Using namespaces to mix and differentiate content coming 5740 from multiple DTDs will certainly break current validation schemes. To check 5741 such documents one needs to use schema-validation, which is supported in 5742 libxml2 as well. See <a href="http://www.relaxng.org/">relagx-ng</a> and <a 5743 href="http://www.w3c.org/XML/Schema">w3c-schema</a>.</p> 5744 5745 <h2><a name="Upgrading">Upgrading 1.x code</a></h2> 5746 5747 <p>Incompatible changes:</p> 5748 5749 <p>Version 2 of libxml2 is the first version introducing serious backward 5750 incompatible changes. The main goals were:</p> 5751 <ul> 5752 <li>a general cleanup. A number of mistakes inherited from the very early 5753 versions couldn't be changed due to compatibility constraints. Example 5754 the "childs" element in the nodes.</li> 5755 <li>Uniformization of the various nodes, at least for their header and link 5756 parts (doc, parent, children, prev, next), the goal is a simpler 5757 programming model and simplifying the task of the DOM implementors.</li> 5758 <li>better conformances to the XML specification, for example version 1.x 5759 had an heuristic to try to detect ignorable white spaces. As a result the 5760 SAX event generated were ignorableWhitespace() while the spec requires 5761 character() in that case. This also mean that a number of DOM node 5762 containing blank text may populate the DOM tree which were not present 5763 before.</li> 5764 </ul> 5765 5766 <h3>How to fix libxml-1.x code:</h3> 5767 5768 <p>So client code of libxml designed to run with version 1.x may have to be 5769 changed to compile against version 2.x of libxml. Here is a list of changes 5770 that I have collected, they may not be sufficient, so in case you find other 5771 change which are required, <a href="mailto:Daniel.Veillard@w3.org">drop me a 5772 mail</a>:</p> 5773 <ol> 5774 <li>The package name have changed from libxml to libxml2, the library name 5775 is now -lxml2 . There is a new xml2-config script which should be used to 5776 select the right parameters libxml2</li> 5777 <li>Node <strong>childs</strong> field has been renamed 5778 <strong>children</strong> so s/childs/children/g should be applied 5779 (probability of having "childs" anywhere else is close to 0+</li> 5780 <li>The document don't have anymore a <strong>root</strong> element it has 5781 been replaced by <strong>children</strong> and usually you will get a 5782 list of element here. For example a Dtd element for the internal subset 5783 and it's declaration may be found in that list, as well as processing 5784 instructions or comments found before or after the document root element. 5785 Use <strong>xmlDocGetRootElement(doc)</strong> to get the root element of 5786 a document. Alternatively if you are sure to not reference DTDs nor have 5787 PIs or comments before or after the root element 5788 s/->root/->children/g will probably do it.</li> 5789 <li>The white space issue, this one is more complex, unless special case of 5790 validating parsing, the line breaks and spaces usually used for indenting 5791 and formatting the document content becomes significant. So they are 5792 reported by SAX and if your using the DOM tree, corresponding nodes are 5793 generated. Too approach can be taken: 5794 <ol> 5795 <li>lazy one, use the compatibility call 5796 <strong>xmlKeepBlanksDefault(0)</strong> but be aware that you are 5797 relying on a special (and possibly broken) set of heuristics of 5798 libxml to detect ignorable blanks. Don't complain if it breaks or 5799 make your application not 100% clean w.r.t. to it's input.</li> 5800 <li>the Right Way: change you code to accept possibly insignificant 5801 blanks characters, or have your tree populated with weird blank text 5802 nodes. You can spot them using the commodity function 5803 <strong>xmlIsBlankNode(node)</strong> returning 1 for such blank 5804 nodes.</li> 5805 </ol> 5806 <p>Note also that with the new default the output functions don't add any 5807 extra indentation when saving a tree in order to be able to round trip 5808 (read and save) without inflating the document with extra formatting 5809 chars.</p> 5810 </li> 5811 <li>The include path has changed to $prefix/libxml/ and the includes 5812 themselves uses this new prefix in includes instructions... If you are 5813 using (as expected) the 5814 <pre>xml2-config --cflags</pre> 5815 <p>output to generate you compile commands this will probably work out of 5816 the box</p> 5817 </li> 5818 <li>xmlDetectCharEncoding takes an extra argument indicating the length in 5819 byte of the head of the document available for character detection.</li> 5820 </ol> 5821 5822 <h3>Ensuring both libxml-1.x and libxml-2.x compatibility</h3> 5823 5824 <p>Two new version of libxml (1.8.11) and libxml2 (2.3.4) have been released 5825 to allow smooth upgrade of existing libxml v1code while retaining 5826 compatibility. They offers the following:</p> 5827 <ol> 5828 <li>similar include naming, one should use 5829 <strong>#include<libxml/...></strong> in both cases.</li> 5830 <li>similar identifiers defined via macros for the child and root fields: 5831 respectively <strong>xmlChildrenNode</strong> and 5832 <strong>xmlRootNode</strong></li> 5833 <li>a new macro <strong>LIBXML_TEST_VERSION</strong> which should be 5834 inserted once in the client code</li> 5835 </ol> 5836 5837 <p>So the roadmap to upgrade your existing libxml applications is the 5838 following:</p> 5839 <ol> 5840 <li>install the libxml-1.8.8 (and libxml-devel-1.8.8) packages</li> 5841 <li>find all occurrences where the xmlDoc <strong>root</strong> field is 5842 used and change it to <strong>xmlRootNode</strong></li> 5843 <li>similarly find all occurrences where the xmlNode 5844 <strong>childs</strong> field is used and change it to 5845 <strong>xmlChildrenNode</strong></li> 5846 <li>add a <strong>LIBXML_TEST_VERSION</strong> macro somewhere in your 5847 <strong>main()</strong> or in the library init entry point</li> 5848 <li>Recompile, check compatibility, it should still work</li> 5849 <li>Change your configure script to look first for xml2-config and fall 5850 back using xml-config . Use the --cflags and --libs output of the command 5851 as the Include and Linking parameters needed to use libxml.</li> 5852 <li>install libxml2-2.3.x and libxml2-devel-2.3.x (libxml-1.8.y and 5853 libxml-devel-1.8.y can be kept simultaneously)</li> 5854 <li>remove your config.cache, relaunch your configuration mechanism, and 5855 recompile, if steps 2 and 3 were done right it should compile as-is</li> 5856 <li>Test that your application is still running correctly, if not this may 5857 be due to extra empty nodes due to formating spaces being kept in libxml2 5858 contrary to libxml1, in that case insert xmlKeepBlanksDefault(1) in your 5859 code before calling the parser (next to 5860 <strong>LIBXML_TEST_VERSION</strong> is a fine place).</li> 5861 </ol> 5862 5863 <p>Following those steps should work. It worked for some of my own code.</p> 5864 5865 <p>Let me put some emphasis on the fact that there is far more changes from 5866 libxml 1.x to 2.x than the ones you may have to patch for. The overall code 5867 has been considerably cleaned up and the conformance to the XML specification 5868 has been drastically improved too. Don't take those changes as an excuse to 5869 not upgrade, it may cost a lot on the long term ...</p> 5870 5871 <h2><a name="Thread">Thread safety</a></h2> 5872 5873 <p>Starting with 2.4.7, libxml2 makes provisions to ensure that concurrent 5874 threads can safely work in parallel parsing different documents. There is 5875 however a couple of things to do to ensure it:</p> 5876 <ul> 5877 <li>configure the library accordingly using the --with-threads options</li> 5878 <li>call xmlInitParser() in the "main" thread before using any of the 5879 libxml2 API (except possibly selecting a different memory allocator)</li> 5880 </ul> 5881 5882 <p>Note that the thread safety cannot be ensured for multiple threads sharing 5883 the same document, the locking must be done at the application level, libxml 5884 exports a basic mutex and reentrant mutexes API in <libxml/threads.h>. 5885 The parts of the library checked for thread safety are:</p> 5886 <ul> 5887 <li>concurrent loading</li> 5888 <li>file access resolution</li> 5889 <li>catalog access</li> 5890 <li>catalog building</li> 5891 <li>entities lookup/accesses</li> 5892 <li>validation</li> 5893 <li>global variables per-thread override</li> 5894 <li>memory handling</li> 5895 </ul> 5896 5897 <p>XPath has been tested for threaded usage on non-modified document 5898 for example when using libxslt, but make 100% sure the documents 5899 are accessed read-only !</p> 5900 5901 <h2><a name="DOM"></a><a name="Principles">DOM Principles</a></h2> 5902 5903 <p><a href="http://www.w3.org/DOM/">DOM</a> stands for the <em>Document 5904 Object Model</em>; this is an API for accessing XML or HTML structured 5905 documents. Native support for DOM in Gnome is on the way (module gnome-dom), 5906 and will be based on gnome-xml. This will be a far cleaner interface to 5907 manipulate XML files within Gnome since it won't expose the internal 5908 structure.</p> 5909 5910 <p>The current DOM implementation on top of libxml2 is the <a 5911 href="http://svn.gnome.org/viewvc/gdome2/trunk/">gdome2 Gnome module</a>, this 5912 is a full DOM interface, thanks to Paolo Casarini, check the <a 5913 href="http://gdome2.cs.unibo.it/">Gdome2 homepage</a> for more 5914 information.</p> 5915 5916 <h2><a name="Example"></a><a name="real">A real example</a></h2> 5917 5918 <p>Here is a real size example, where the actual content of the application 5919 data is not kept in the DOM tree but uses internal structures. It is based on 5920 a proposal to keep a database of jobs related to Gnome, with an XML based 5921 storage structure. Here is an <a href="gjobs.xml">XML encoded jobs 5922 base</a>:</p> 5923 <pre><?xml version="1.0"?> 5924 <gjob:Helping xmlns:gjob="http://www.gnome.org/some-location"> 5925 <gjob:Jobs> 5926 5927 <gjob:Job> 5928 <gjob:Project ID="3"/> 5929 <gjob:Application>GBackup</gjob:Application> 5930 <gjob:Category>Development</gjob:Category> 5931 5932 <gjob:Update> 5933 <gjob:Status>Open</gjob:Status> 5934 <gjob:Modified>Mon, 07 Jun 1999 20:27:45 -0400 MET DST</gjob:Modified> 5935 <gjob:Salary>USD 0.00</gjob:Salary> 5936 </gjob:Update> 5937 5938 <gjob:Developers> 5939 <gjob:Developer> 5940 </gjob:Developer> 5941 </gjob:Developers> 5942 5943 <gjob:Contact> 5944 <gjob:Person>Nathan Clemons</gjob:Person> 5945 <gjob:Email>nathan@windsofstorm.net</gjob:Email> 5946 <gjob:Company> 5947 </gjob:Company> 5948 <gjob:Organisation> 5949 </gjob:Organisation> 5950 <gjob:Webpage> 5951 </gjob:Webpage> 5952 <gjob:Snailmail> 5953 </gjob:Snailmail> 5954 <gjob:Phone> 5955 </gjob:Phone> 5956 </gjob:Contact> 5957 5958 <gjob:Requirements> 5959 The program should be released as free software, under the GPL. 5960 </gjob:Requirements> 5961 5962 <gjob:Skills> 5963 </gjob:Skills> 5964 5965 <gjob:Details> 5966 A GNOME based system that will allow a superuser to configure 5967 compressed and uncompressed files and/or file systems to be backed 5968 up with a supported media in the system. This should be able to 5969 perform via find commands generating a list of files that are passed 5970 to tar, dd, cpio, cp, gzip, etc., to be directed to the tape machine 5971 or via operations performed on the filesystem itself. Email 5972 notification and GUI status display very important. 5973 </gjob:Details> 5974 5975 </gjob:Job> 5976 5977 </gjob:Jobs> 5978 </gjob:Helping></pre> 5979 5980 <p>While loading the XML file into an internal DOM tree is a matter of 5981 calling only a couple of functions, browsing the tree to gather the data and 5982 generate the internal structures is harder, and more error prone.</p> 5983 5984 <p>The suggested principle is to be tolerant with respect to the input 5985 structure. For example, the ordering of the attributes is not significant, 5986 the XML specification is clear about it. It's also usually a good idea not to 5987 depend on the order of the children of a given node, unless it really makes 5988 things harder. Here is some code to parse the information for a person:</p> 5989 <pre>/* 5990 * A person record 5991 */ 5992 typedef struct person { 5993 char *name; 5994 char *email; 5995 char *company; 5996 char *organisation; 5997 char *smail; 5998 char *webPage; 5999 char *phone; 6000 } person, *personPtr; 6001 6002 /* 6003 * And the code needed to parse it 6004 */ 6005 personPtr parsePerson(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur) { 6006 personPtr ret = NULL; 6007 6008 DEBUG("parsePerson\n"); 6009 /* 6010 * allocate the struct 6011 */ 6012 ret = (personPtr) malloc(sizeof(person)); 6013 if (ret == NULL) { 6014 fprintf(stderr,"out of memory\n"); 6015 return(NULL); 6016 } 6017 memset(ret, 0, sizeof(person)); 6018 6019 /* We don't care what the top level element name is */ 6020 cur = cur->xmlChildrenNode; 6021 while (cur != NULL) { 6022 if ((!strcmp(cur->name, "Person")) && (cur->ns == ns)) 6023 ret->name = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6024 if ((!strcmp(cur->name, "Email")) && (cur->ns == ns)) 6025 ret->email = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6026 cur = cur->next; 6027 } 6028 6029 return(ret); 6030 }</pre> 6031 6032 <p>Here are a couple of things to notice:</p> 6033 <ul> 6034 <li>Usually a recursive parsing style is the more convenient one: XML data 6035 is by nature subject to repetitive constructs and usually exhibits highly 6036 structured patterns.</li> 6037 <li>The two arguments of type <em>xmlDocPtr</em> and <em>xmlNsPtr</em>, 6038 i.e. the pointer to the global XML document and the namespace reserved to 6039 the application. Document wide information are needed for example to 6040 decode entities and it's a good coding practice to define a namespace for 6041 your application set of data and test that the element and attributes 6042 you're analyzing actually pertains to your application space. This is 6043 done by a simple equality test (cur->ns == ns).</li> 6044 <li>To retrieve text and attributes value, you can use the function 6045 <em>xmlNodeListGetString</em> to gather all the text and entity reference 6046 nodes generated by the DOM output and produce an single text string.</li> 6047 </ul> 6048 6049 <p>Here is another piece of code used to parse another level of the 6050 structure:</p> 6051 <pre>#include <libxml/tree.h> 6052 /* 6053 * a Description for a Job 6054 */ 6055 typedef struct job { 6056 char *projectID; 6057 char *application; 6058 char *category; 6059 personPtr contact; 6060 int nbDevelopers; 6061 personPtr developers[100]; /* using dynamic alloc is left as an exercise */ 6062 } job, *jobPtr; 6063 6064 /* 6065 * And the code needed to parse it 6066 */ 6067 jobPtr parseJob(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur) { 6068 jobPtr ret = NULL; 6069 6070 DEBUG("parseJob\n"); 6071 /* 6072 * allocate the struct 6073 */ 6074 ret = (jobPtr) malloc(sizeof(job)); 6075 if (ret == NULL) { 6076 fprintf(stderr,"out of memory\n"); 6077 return(NULL); 6078 } 6079 memset(ret, 0, sizeof(job)); 6080 6081 /* We don't care what the top level element name is */ 6082 cur = cur->xmlChildrenNode; 6083 while (cur != NULL) { 6084 6085 if ((!strcmp(cur->name, "Project")) && (cur->ns == ns)) { 6086 ret->projectID = xmlGetProp(cur, "ID"); 6087 if (ret->projectID == NULL) { 6088 fprintf(stderr, "Project has no ID\n"); 6089 } 6090 } 6091 if ((!strcmp(cur->name, "Application")) && (cur->ns == ns)) 6092 ret->application = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6093 if ((!strcmp(cur->name, "Category")) && (cur->ns == ns)) 6094 ret->category = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6095 if ((!strcmp(cur->name, "Contact")) && (cur->ns == ns)) 6096 ret->contact = parsePerson(doc, ns, cur); 6097 cur = cur->next; 6098 } 6099 6100 return(ret); 6101 }</pre> 6102 6103 <p>Once you are used to it, writing this kind of code is quite simple, but 6104 boring. Ultimately, it could be possible to write stubbers taking either C 6105 data structure definitions, a set of XML examples or an XML DTD and produce 6106 the code needed to import and export the content between C data and XML 6107 storage. This is left as an exercise to the reader :-)</p> 6108 6109 <p>Feel free to use <a href="example/gjobread.c">the code for the full C 6110 parsing example</a> as a template, it is also available with Makefile in the 6111 Gnome SVN base under libxml2/example</p> 6112 6113 <h2><a name="Contributi">Contributions</a></h2> 6114 <ul> 6115 <li>Bjorn Reese, William Brack and Thomas Broyer have provided a number of 6116 patches, Gary Pennington worked on the validation API, threading support 6117 and Solaris port.</li> 6118 <li>John Fleck helps maintaining the documentation and man pages.</li> 6119 <li><a href="mailto:igor@zlatkovic.com">Igor Zlatkovic</a> is now the 6120 maintainer of the Windows port, <a 6121 href="http://www.zlatkovic.com/projects/libxml/index.html">he provides 6122 binaries</a></li> 6123 <li><a href="mailto:Gary.Pennington@sun.com">Gary Pennington</a> provides 6124 <a href="http://garypennington.net/libxml2/">Solaris binaries</a></li> 6125 <li><a 6126 href="http://mail.gnome.org/archives/xml/2001-March/msg00014.html">Matt 6127 Sergeant</a> developed <a 6128 href="http://axkit.org/download/">XML::LibXSLT</a>, a Perl wrapper for 6129 libxml2/libxslt as part of the <a href="http://axkit.com/">AxKit XML 6130 application server</a></li> 6131 <li><a href="mailto:fnatter@gmx.net">Felix Natter</a> and <a 6132 href="mailto:geertk@ai.rug.nl">Geert Kloosterman</a> provide <a 6133 href="libxml-doc.el">an emacs module</a> to lookup libxml(2) functions 6134 documentation</li> 6135 <li><a href="mailto:sherwin@nlm.nih.gov">Ziying Sherwin</a> provided <a 6136 href="http://xmlsoft.org/messages/0488.html">man pages</a></li> 6137 <li>there is a module for <a 6138 href="http://acs-misc.sourceforge.net/nsxml.html">libxml/libxslt support 6139 in OpenNSD/AOLServer</a></li> 6140 <li><a href="mailto:dkuhlman@cutter.rexx.com">Dave Kuhlman</a> provided the 6141 first version of libxml/libxslt <a 6142 href="http://www.rexx.com/~dkuhlman">wrappers for Python</a></li> 6143 <li>Petr Kozelka provides <a 6144 href="http://sourceforge.net/projects/libxml2-pas">Pascal units to glue 6145 libxml2</a> with Kylix and Delphi and other Pascal compilers</li> 6146 <li><a href="mailto:aleksey@aleksey.com">Aleksey Sanin</a> implemented the 6147 <a href="http://www.w3.org/Signature/">XML Canonicalization and XML 6148 Digital Signature</a> <a 6149 href="http://www.aleksey.com/xmlsec/">implementations for libxml2</a></li> 6150 <li><a href="mailto:Steve.Ball@explain.com.au">Steve Ball</a> and 6151 contributors maintain <a href="http://tclxml.sourceforge.net/">tcl 6152 bindings for libxml2 and libxslt</a>, as well as <a 6153 href="http://tclxml.sf.net/tkxmllint.html">tkxmllint</a> a GUI for 6154 xmllint and <a href="http://tclxml.sf.net/tkxsltproc.html">tkxsltproc</a> 6155 a GUI for xsltproc.</li> 6156 </ul> 6157 6158 <p></p> 6159 </body> 6160 </html>