bits.c
1 /* 2 * Copyright (c) 1997-2002 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Portions Copyright (c) 2010 Apple Inc. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifdef HAVE_CONFIG_H 37 #include <config.h> 38 RCSID("$Id$"); 39 #endif 40 #include <stdio.h> 41 #include <string.h> 42 #include <stdlib.h> 43 #include <ctype.h> 44 #ifdef WIN32 45 #include <winsock2.h> 46 #include <ws2tcpip.h> 47 #endif 48 49 #define BITSIZE(TYPE) \ 50 { \ 51 int b = 0; TYPE x = 1, zero = 0; const char *pre = "u"; \ 52 char tmp[128], tmp2[128]; \ 53 while(x){ x <<= 1; b++; if(x < zero) pre=""; } \ 54 if(b >= len){ \ 55 size_t tabs; \ 56 sprintf(tmp, "%sint%d_t" , pre, len); \ 57 sprintf(tmp2, "typedef %s %s;", #TYPE, tmp); \ 58 tabs = 5 - strlen(tmp2) / 8; \ 59 fprintf(f, "%s", tmp2); \ 60 while(tabs-- > 0) fprintf(f, "\t"); \ 61 fprintf(f, "/* %2d bits */\n", b); \ 62 return; \ 63 } \ 64 } 65 66 #ifndef HAVE___ATTRIBUTE__ 67 #define __attribute__(x) 68 #endif 69 70 static void 71 try_signed(FILE *f, int len) __attribute__ ((unused)); 72 73 static void 74 try_unsigned(FILE *f, int len) __attribute__ ((unused)); 75 76 static int 77 print_bt(FILE *f, int flag) __attribute__ ((unused)); 78 79 static void 80 try_signed(FILE *f, int len) 81 { 82 BITSIZE(signed char); 83 BITSIZE(short); 84 BITSIZE(int); 85 BITSIZE(long); 86 #ifdef HAVE_LONG_LONG 87 BITSIZE(long long); 88 #endif 89 fprintf(f, "/* There is no %d bit type */\n", len); 90 } 91 92 static void 93 try_unsigned(FILE *f, int len) 94 { 95 BITSIZE(unsigned char); 96 BITSIZE(unsigned short); 97 BITSIZE(unsigned int); 98 BITSIZE(unsigned long); 99 #ifdef HAVE_LONG_LONG 100 BITSIZE(unsigned long long); 101 #endif 102 fprintf(f, "/* There is no %d bit type */\n", len); 103 } 104 105 static int 106 print_bt(FILE *f, int flag) 107 { 108 if(flag == 0){ 109 fprintf(f, "/* For compatibility with various type definitions */\n"); 110 fprintf(f, "#ifndef __BIT_TYPES_DEFINED__\n"); 111 fprintf(f, "#define __BIT_TYPES_DEFINED__\n"); 112 fprintf(f, "\n"); 113 } 114 return 1; 115 } 116 117 int main(int argc, char **argv) 118 { 119 FILE *f; 120 int flag; 121 const char *fn, *hb; 122 123 if (argc > 1 && strcmp(argv[1], "--version") == 0) { 124 printf("some version"); 125 return 0; 126 } 127 128 if(argc < 2){ 129 fn = "bits.h"; 130 hb = "__BITS_H__"; 131 f = stdout; 132 } else { 133 char *p; 134 fn = argv[1]; 135 p = malloc(strlen(fn) + 5); 136 sprintf(p, "__%s__", fn); 137 hb = p; 138 for(; *p; p++){ 139 if(!isalnum((unsigned char)*p)) 140 *p = '_'; 141 } 142 f = fopen(argv[1], "w"); 143 } 144 fprintf(f, "/* %s -- this file was generated for %s by\n", fn, HOST); 145 fprintf(f, " %*s %s */\n\n", (int)strlen(fn), "", 146 "$Id$"); 147 fprintf(f, "#ifndef %s\n", hb); 148 fprintf(f, "#define %s\n", hb); 149 fprintf(f, "\n"); 150 #ifdef HAVE_INTTYPES_H 151 fprintf(f, "#include <inttypes.h>\n"); 152 #endif 153 #ifdef HAVE_SYS_TYPES_H 154 fprintf(f, "#include <sys/types.h>\n"); 155 #endif 156 #ifdef HAVE_SYS_BITYPES_H 157 fprintf(f, "#include <sys/bitypes.h>\n"); 158 #endif 159 #ifdef HAVE_BIND_BITYPES_H 160 fprintf(f, "#include <bind/bitypes.h>\n"); 161 #endif 162 #ifdef HAVE_NETINET_IN6_MACHTYPES_H 163 fprintf(f, "#include <netinet/in6_machtypes.h>\n"); 164 #endif 165 #ifdef HAVE_SOCKLEN_T 166 #ifndef WIN32 167 fprintf(f, "#include <sys/socket.h>\n"); 168 #else 169 fprintf(f, "#include <winsock2.h>\n"); 170 fprintf(f, "#include <ws2tcpip.h>\n"); 171 #endif 172 #endif 173 fprintf(f, "\n"); 174 175 flag = 0; 176 #ifndef HAVE_INT8_T 177 flag = print_bt(f, flag); 178 try_signed (f, 8); 179 #endif /* HAVE_INT8_T */ 180 #ifndef HAVE_INT16_T 181 flag = print_bt(f, flag); 182 try_signed (f, 16); 183 #endif /* HAVE_INT16_T */ 184 #ifndef HAVE_INT32_T 185 flag = print_bt(f, flag); 186 try_signed (f, 32); 187 #endif /* HAVE_INT32_T */ 188 #ifndef HAVE_INT64_T 189 flag = print_bt(f, flag); 190 try_signed (f, 64); 191 #endif /* HAVE_INT64_T */ 192 193 #ifndef HAVE_UINT8_T 194 flag = print_bt(f, flag); 195 try_unsigned (f, 8); 196 #endif /* HAVE_UINT8_T */ 197 #ifndef HAVE_UINT16_T 198 flag = print_bt(f, flag); 199 try_unsigned (f, 16); 200 #endif /* HAVE_UINT16_T */ 201 #ifndef HAVE_UINT32_T 202 flag = print_bt(f, flag); 203 try_unsigned (f, 32); 204 #endif /* HAVE_UINT32_T */ 205 #ifndef HAVE_UINT64_T 206 flag = print_bt(f, flag); 207 try_unsigned (f, 64); 208 #endif /* HAVE_UINT64_T */ 209 210 #define X(S) fprintf(f, "typedef uint" #S "_t u_int" #S "_t;\n") 211 #ifndef HAVE_U_INT8_T 212 flag = print_bt(f, flag); 213 X(8); 214 #endif /* HAVE_U_INT8_T */ 215 #ifndef HAVE_U_INT16_T 216 flag = print_bt(f, flag); 217 X(16); 218 #endif /* HAVE_U_INT16_T */ 219 #ifndef HAVE_U_INT32_T 220 flag = print_bt(f, flag); 221 X(32); 222 #endif /* HAVE_U_INT32_T */ 223 #ifndef HAVE_U_INT64_T 224 flag = print_bt(f, flag); 225 X(64); 226 #endif /* HAVE_U_INT64_T */ 227 228 if(flag){ 229 fprintf(f, "\n"); 230 fprintf(f, "#endif /* __BIT_TYPES_DEFINED__ */\n\n"); 231 } 232 #ifdef KRB5 233 fprintf(f, "\n"); 234 #if defined(HAVE_SOCKLEN_T) 235 fprintf(f, "typedef socklen_t krb5_socklen_t;\n"); 236 #else 237 fprintf(f, "typedef int krb5_socklen_t;\n"); 238 #endif 239 #if defined(HAVE_SSIZE_T) 240 #ifdef HAVE_UNISTD_H 241 fprintf(f, "#include <unistd.h>\n"); 242 #endif 243 fprintf(f, "typedef ssize_t krb5_ssize_t;\n"); 244 #else 245 fprintf(f, "typedef int krb5_ssize_t;\n"); 246 #endif 247 fprintf(f, "\n"); 248 249 #if defined(_WIN32) 250 fprintf(f, "typedef SOCKET krb5_socket_t;\n"); 251 #else 252 fprintf(f, "typedef int krb5_socket_t;\n"); 253 #endif 254 fprintf(f, "\n"); 255 256 #endif /* KRB5 */ 257 258 fprintf(f, "#ifndef HEIMDAL_DEPRECATED\n"); 259 fprintf(f, "#if defined(__GNUC__) && ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1 )))\n"); 260 fprintf(f, "#define HEIMDAL_DEPRECATED __attribute__((deprecated))\n"); 261 fprintf(f, "#elif defined(_MSC_VER) && (_MSC_VER>1200)\n"); 262 fprintf(f, "#define HEIMDAL_DEPRECATED __declspec(deprecated)\n"); 263 fprintf(f, "#else\n"); 264 fprintf(f, "#define HEIMDAL_DEPRECATED\n"); 265 fprintf(f, "#endif\n"); 266 fprintf(f, "#endif\n"); 267 268 fprintf(f, "#ifndef HEIMDAL_PRINTF_ATTRIBUTE\n"); 269 fprintf(f, "#if defined(__GNUC__) && ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1 )))\n"); 270 fprintf(f, "#define HEIMDAL_PRINTF_ATTRIBUTE(x) __attribute__((format x))\n"); 271 fprintf(f, "#else\n"); 272 fprintf(f, "#define HEIMDAL_PRINTF_ATTRIBUTE(x)\n"); 273 fprintf(f, "#endif\n"); 274 fprintf(f, "#endif\n"); 275 276 fprintf(f, "#ifndef HEIMDAL_NORETURN_ATTRIBUTE\n"); 277 fprintf(f, "#if defined(__GNUC__) && ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1 )))\n"); 278 fprintf(f, "#define HEIMDAL_NORETURN_ATTRIBUTE __attribute__((noreturn))\n"); 279 fprintf(f, "#else\n"); 280 fprintf(f, "#define HEIMDAL_NORETURN_ATTRIBUTE\n"); 281 fprintf(f, "#endif\n"); 282 fprintf(f, "#endif\n"); 283 284 fprintf(f, "#ifndef HEIMDAL_UNUSED_ATTRIBUTE\n"); 285 fprintf(f, "#if defined(__GNUC__) && ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1 )))\n"); 286 fprintf(f, "#define HEIMDAL_UNUSED_ATTRIBUTE __attribute__((unused))\n"); 287 fprintf(f, "#else\n"); 288 fprintf(f, "#define HEIMDAL_UNUSED_ATTRIBUTE\n"); 289 fprintf(f, "#endif\n"); 290 fprintf(f, "#endif\n"); 291 292 fprintf(f, "#endif /* %s */\n", hb); 293 294 if (f != stdout) 295 fclose(f); 296 return 0; 297 }