testXPath.c
1 /* 2 * testXPath.c : a small tester program for XPath. 3 * 4 * See Copyright for the status of this software. 5 * 6 * daniel@veillard.com 7 */ 8 9 #include "libxml.h" 10 #if defined(LIBXML_XPATH_ENABLED) && defined(LIBXML_DEBUG_ENABLED) 11 12 #include <string.h> 13 14 #ifdef HAVE_SYS_TYPES_H 15 #include <sys/types.h> 16 #endif 17 #ifdef HAVE_SYS_STAT_H 18 #include <sys/stat.h> 19 #endif 20 #ifdef HAVE_FCNTL_H 21 #include <fcntl.h> 22 #endif 23 #ifdef HAVE_UNISTD_H 24 #include <unistd.h> 25 #endif 26 #ifdef HAVE_STDLIB_H 27 #include <stdlib.h> 28 #endif 29 30 31 #include <libxml/xpath.h> 32 #include <libxml/tree.h> 33 #include <libxml/parser.h> 34 #include <libxml/debugXML.h> 35 #include <libxml/xmlmemory.h> 36 #include <libxml/parserInternals.h> 37 #include <libxml/xpathInternals.h> 38 #include <libxml/xmlerror.h> 39 #include <libxml/globals.h> 40 #if defined(LIBXML_XPTR_ENABLED) 41 #include <libxml/xpointer.h> 42 static int xptr = 0; 43 #endif 44 static int debug = 0; 45 static int valid = 0; 46 static int expr = 0; 47 static int tree = 0; 48 static int nocdata = 0; 49 static xmlDocPtr document = NULL; 50 51 /* 52 * Default document 53 */ 54 static xmlChar buffer[] = 55 "<?xml version=\"1.0\"?>\n\ 56 <EXAMPLE prop1=\"gnome is great\" prop2=\"& linux too\">\n\ 57 <head>\n\ 58 <title>Welcome to Gnome</title>\n\ 59 </head>\n\ 60 <chapter>\n\ 61 <title>The Linux adventure</title>\n\ 62 <p>bla bla bla ...</p>\n\ 63 <image href=\"linus.gif\"/>\n\ 64 <p>...</p>\n\ 65 </chapter>\n\ 66 <chapter>\n\ 67 <title>Chapter 2</title>\n\ 68 <p>this is chapter 2 ...</p>\n\ 69 </chapter>\n\ 70 <chapter>\n\ 71 <title>Chapter 3</title>\n\ 72 <p>this is chapter 3 ...</p>\n\ 73 </chapter>\n\ 74 </EXAMPLE>\n\ 75 "; 76 77 78 static void 79 testXPath(const char *str) { 80 xmlXPathObjectPtr res; 81 xmlXPathContextPtr ctxt; 82 83 #if defined(LIBXML_XPTR_ENABLED) 84 if (xptr) { 85 ctxt = xmlXPtrNewContext(document, NULL, NULL); 86 res = xmlXPtrEval(BAD_CAST str, ctxt); 87 } else { 88 #endif 89 ctxt = xmlXPathNewContext(document); 90 ctxt->node = xmlDocGetRootElement(document); 91 if (expr) 92 res = xmlXPathEvalExpression(BAD_CAST str, ctxt); 93 else { 94 /* res = xmlXPathEval(BAD_CAST str, ctxt); */ 95 xmlXPathCompExprPtr comp; 96 97 comp = xmlXPathCompile(BAD_CAST str); 98 if (comp != NULL) { 99 if (tree) 100 xmlXPathDebugDumpCompExpr(stdout, comp, 0); 101 102 res = xmlXPathCompiledEval(comp, ctxt); 103 xmlXPathFreeCompExpr(comp); 104 } else 105 res = NULL; 106 } 107 #if defined(LIBXML_XPTR_ENABLED) 108 } 109 #endif 110 xmlXPathDebugDumpObject(stdout, res, 0); 111 xmlXPathFreeObject(res); 112 xmlXPathFreeContext(ctxt); 113 } 114 115 static void 116 testXPathFile(const char *filename) { 117 FILE *input; 118 char expression[5000]; 119 int len; 120 121 input = fopen(filename, "r"); 122 if (input == NULL) { 123 xmlGenericError(xmlGenericErrorContext, 124 "Cannot open %s for reading\n", filename); 125 return; 126 } 127 while (fgets(expression, 4500, input) != NULL) { 128 len = strlen(expression); 129 len--; 130 while ((len >= 0) && 131 ((expression[len] == '\n') || (expression[len] == '\t') || 132 (expression[len] == '\r') || (expression[len] == ' '))) len--; 133 expression[len + 1] = 0; 134 if (len >= 0) { 135 printf("\n========================\nExpression: %s\n", expression) ; 136 testXPath(expression); 137 } 138 } 139 140 fclose(input); 141 } 142 143 int main(int argc, char **argv) { 144 int i; 145 int strings = 0; 146 int usefile = 0; 147 char *filename = NULL; 148 149 for (i = 1; i < argc ; i++) { 150 #if defined(LIBXML_XPTR_ENABLED) 151 if ((!strcmp(argv[i], "-xptr")) || (!strcmp(argv[i], "--xptr"))) 152 xptr++; 153 else 154 #endif 155 if ((!strcmp(argv[i], "-debug")) || (!strcmp(argv[i], "--debug"))) 156 debug++; 157 else if ((!strcmp(argv[i], "-valid")) || (!strcmp(argv[i], "--valid"))) 158 valid++; 159 else if ((!strcmp(argv[i], "-expr")) || (!strcmp(argv[i], "--expr"))) 160 expr++; 161 else if ((!strcmp(argv[i], "-tree")) || (!strcmp(argv[i], "--tree"))) 162 tree++; 163 else if ((!strcmp(argv[i], "-nocdata")) || 164 (!strcmp(argv[i], "--nocdata"))) 165 nocdata++; 166 else if ((!strcmp(argv[i], "-i")) || (!strcmp(argv[i], "--input"))) 167 filename = argv[++i]; 168 else if ((!strcmp(argv[i], "-f")) || (!strcmp(argv[i], "--file"))) 169 usefile++; 170 } 171 if (valid != 0) xmlDoValidityCheckingDefaultValue = 1; 172 xmlLoadExtDtdDefaultValue |= XML_DETECT_IDS; 173 xmlLoadExtDtdDefaultValue |= XML_COMPLETE_ATTRS; 174 xmlSubstituteEntitiesDefaultValue = 1; 175 #ifdef LIBXML_SAX1_ENABLED 176 if (nocdata != 0) { 177 xmlDefaultSAXHandlerInit(); 178 xmlDefaultSAXHandler.cdataBlock = NULL; 179 } 180 #endif 181 if (document == NULL) { 182 if (filename == NULL) 183 document = xmlReadDoc(buffer,NULL,NULL,XML_PARSE_COMPACT); 184 else 185 document = xmlReadFile(filename,NULL,XML_PARSE_COMPACT); 186 } 187 for (i = 1; i < argc ; i++) { 188 if ((!strcmp(argv[i], "-i")) || (!strcmp(argv[i], "--input"))) { 189 i++; continue; 190 } 191 if (argv[i][0] != '-') { 192 if (usefile) 193 testXPathFile(argv[i]); 194 else 195 testXPath(argv[i]); 196 strings ++; 197 } 198 } 199 if (strings == 0) { 200 printf("Usage : %s [--debug] [--copy] stringsorfiles ...\n", 201 argv[0]); 202 printf("\tParse the XPath strings and output the result of the parsing\n"); 203 printf("\t--debug : dump a debug version of the result\n"); 204 printf("\t--valid : switch on DTD support in the parser\n"); 205 #if defined(LIBXML_XPTR_ENABLED) 206 printf("\t--xptr : expressions are XPointer expressions\n"); 207 #endif 208 printf("\t--expr : debug XPath expressions only\n"); 209 printf("\t--tree : show the compiled XPath tree\n"); 210 printf("\t--nocdata : do not generate CDATA nodes\n"); 211 printf("\t--input filename : or\n"); 212 printf("\t-i filename : read the document from filename\n"); 213 printf("\t--file : or\n"); 214 printf("\t-f : read queries from files, args\n"); 215 } 216 if (document != NULL) 217 xmlFreeDoc(document); 218 xmlCleanupParser(); 219 xmlMemoryDump(); 220 221 return(0); 222 } 223 #else 224 #include <stdio.h> 225 int main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) { 226 printf("%s : XPath/Debug support not compiled in\n", argv[0]); 227 return(0); 228 } 229 #endif /* LIBXML_XPATH_ENABLED */