Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 1 | /* |
| 2 | * xmlIO.c : implementation of the I/O interfaces used by the parser |
| 3 | * |
| 4 | * See Copyright for the status of this software. |
| 5 | * |
| 6 | * Daniel.Veillard@w3.org |
| 7 | */ |
| 8 | |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 9 | #ifdef WIN32 |
| 10 | #define HAVE_FCNTL_H |
| 11 | #include <io.h> |
| 12 | #else |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 13 | #include "config.h" |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 14 | #endif |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 15 | |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 16 | #include <stdio.h> |
| 17 | #include <string.h> |
| 18 | |
| 19 | #ifdef HAVE_SYS_TYPES_H |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 20 | #include <sys/types.h> |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 21 | #endif |
| 22 | #ifdef HAVE_SYS_STAT_H |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 23 | #include <sys/stat.h> |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 24 | #endif |
| 25 | #ifdef HAVE_FCNTL_H |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 26 | #include <fcntl.h> |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 27 | #endif |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 28 | #ifdef HAVE_UNISTD_H |
| 29 | #include <unistd.h> |
| 30 | #endif |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 31 | #ifdef HAVE_STDLIB_H |
| 32 | #include <stdlib.h> |
| 33 | #endif |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 34 | #ifdef HAVE_ZLIB_H |
| 35 | #include <zlib.h> |
| 36 | #endif |
| 37 | |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 38 | #include "xmlmemory.h" |
Daniel Veillard | b96e643 | 1999-08-29 21:02:19 +0000 | [diff] [blame] | 39 | #include "parser.h" |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 40 | #include "xmlIO.h" |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 41 | #include "nanohttp.h" |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 42 | |
| 43 | /* #define DEBUG_INPUT */ |
| 44 | /* #define VERBOSE_FAILURE */ |
Daniel Veillard | b96e643 | 1999-08-29 21:02:19 +0000 | [diff] [blame] | 45 | /* #define DEBUG_EXTERNAL_ENTITIES */ |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 46 | |
| 47 | #ifdef DEBUG_INPUT |
| 48 | #define MINLEN 40 |
| 49 | #else |
| 50 | #define MINLEN 4000 |
| 51 | #endif |
| 52 | |
| 53 | /** |
| 54 | * xmlAllocParserInputBuffer: |
| 55 | * @enc: the charset encoding if known |
| 56 | * |
| 57 | * Create a buffered parser input for progressive parsing |
| 58 | * |
| 59 | * Returns the new parser input or NULL |
| 60 | */ |
| 61 | xmlParserInputBufferPtr |
| 62 | xmlAllocParserInputBuffer(xmlCharEncoding enc) { |
| 63 | xmlParserInputBufferPtr ret; |
| 64 | |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 65 | ret = (xmlParserInputBufferPtr) xmlMalloc(sizeof(xmlParserInputBuffer)); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 66 | if (ret == NULL) { |
| 67 | fprintf(stderr, "xmlAllocParserInputBuffer : out of memory!\n"); |
| 68 | return(NULL); |
| 69 | } |
| 70 | memset(ret, 0, (size_t) sizeof(xmlParserInputBuffer)); |
| 71 | ret->buffer = xmlBufferCreate(); |
| 72 | ret->encoder = xmlGetCharEncodingHandler(enc); |
| 73 | ret->fd = -1; |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 74 | ret->netIO = NULL; |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 75 | |
| 76 | return(ret); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * xmlFreeParserInputBuffer: |
| 81 | * @in: a buffered parser input |
| 82 | * |
| 83 | * Free up the memory used by a buffered parser input |
| 84 | */ |
| 85 | void |
| 86 | xmlFreeParserInputBuffer(xmlParserInputBufferPtr in) { |
| 87 | if (in->buffer != NULL) { |
| 88 | xmlBufferFree(in->buffer); |
| 89 | in->buffer = NULL; |
| 90 | } |
| 91 | #ifdef HAVE_ZLIB_H |
| 92 | if (in->gzfile != NULL) |
| 93 | gzclose(in->gzfile); |
| 94 | #endif |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 95 | if (in->netIO != NULL) |
| 96 | xmlNanoHTTPClose(in->netIO); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 97 | if (in->fd >= 0) |
| 98 | close(in->fd); |
| 99 | memset(in, 0xbe, (size_t) sizeof(xmlParserInputBuffer)); |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 100 | xmlFree(in); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | /** |
| 104 | * xmlParserInputBufferCreateFilename: |
| 105 | * @filename: a C string containing the filename |
| 106 | * @enc: the charset encoding if known |
| 107 | * |
| 108 | * Create a buffered parser input for the progressive parsing of a file |
| 109 | * If filename is "-' then we use stdin as the input. |
| 110 | * Automatic support for ZLIB/Compress compressed document is provided |
| 111 | * by default if found at compile-time. |
| 112 | * |
| 113 | * Returns the new parser input or NULL |
| 114 | */ |
| 115 | xmlParserInputBufferPtr |
| 116 | xmlParserInputBufferCreateFilename(const char *filename, xmlCharEncoding enc) { |
| 117 | xmlParserInputBufferPtr ret; |
| 118 | #ifdef HAVE_ZLIB_H |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 119 | gzFile input = 0; |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 120 | #else |
| 121 | int input = -1; |
| 122 | #endif |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 123 | void *netIO = NULL; |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 124 | |
| 125 | if (filename == NULL) return(NULL); |
| 126 | |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 127 | if (!strncmp(filename, "http://", 7)) { |
| 128 | netIO = xmlNanoHTTPOpen(filename, NULL); |
| 129 | if (netIO == NULL) { |
| 130 | #ifdef VERBOSE_FAILURE |
| 131 | fprintf (stderr, "Cannot read URL %s\n", filename); |
| 132 | perror ("xmlNanoHTTPOpen failed"); |
| 133 | #endif |
| 134 | return(NULL); |
| 135 | } |
| 136 | } else if (!strcmp(filename, "-")) { |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 137 | #ifdef HAVE_ZLIB_H |
| 138 | input = gzdopen (fileno(stdin), "r"); |
| 139 | if (input == NULL) { |
| 140 | #ifdef VERBOSE_FAILURE |
| 141 | fprintf (stderr, "Cannot read from stdin\n"); |
| 142 | perror ("gzdopen failed"); |
| 143 | #endif |
| 144 | return(NULL); |
| 145 | } |
| 146 | #else |
| 147 | #ifdef WIN32 |
| 148 | input = -1; |
| 149 | #else |
| 150 | input = fileno(stdin); |
| 151 | #endif |
| 152 | if (input < 0) { |
| 153 | #ifdef VERBOSE_FAILURE |
| 154 | fprintf (stderr, "Cannot read from stdin\n"); |
| 155 | perror ("open failed"); |
| 156 | #endif |
| 157 | return(NULL); |
| 158 | } |
| 159 | #endif |
| 160 | } else { |
| 161 | #ifdef HAVE_ZLIB_H |
| 162 | input = gzopen (filename, "r"); |
| 163 | if (input == NULL) { |
| 164 | #ifdef VERBOSE_FAILURE |
| 165 | fprintf (stderr, "Cannot read file %s :\n", filename); |
| 166 | perror ("gzopen failed"); |
| 167 | #endif |
| 168 | return(NULL); |
| 169 | } |
| 170 | #else |
| 171 | #ifdef WIN32 |
| 172 | input = _open (filename, O_RDONLY | _O_BINARY); |
| 173 | #else |
| 174 | input = open (filename, O_RDONLY); |
| 175 | #endif |
| 176 | if (input < 0) { |
| 177 | #ifdef VERBOSE_FAILURE |
| 178 | fprintf (stderr, "Cannot read file %s :\n", filename); |
| 179 | perror ("open failed"); |
| 180 | #endif |
| 181 | return(NULL); |
| 182 | } |
| 183 | #endif |
| 184 | } |
| 185 | /* |
Daniel Veillard | b96e643 | 1999-08-29 21:02:19 +0000 | [diff] [blame] | 186 | * TODO : get the 4 first bytes and decode the charset |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 187 | * if enc == XML_CHAR_ENCODING_NONE |
| 188 | * plug some encoding conversion routines here. !!! |
| 189 | * enc = xmlDetectCharEncoding(buffer); |
| 190 | */ |
| 191 | |
| 192 | ret = xmlAllocParserInputBuffer(enc); |
| 193 | if (ret != NULL) { |
| 194 | #ifdef HAVE_ZLIB_H |
| 195 | ret->gzfile = input; |
| 196 | #else |
| 197 | ret->fd = input; |
| 198 | #endif |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 199 | ret->netIO = netIO; |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 200 | } |
| 201 | xmlParserInputBufferRead(ret, 4); |
| 202 | |
| 203 | return(ret); |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * xmlParserInputBufferCreateFile: |
| 208 | * @file: a FILE* |
| 209 | * @enc: the charset encoding if known |
| 210 | * |
| 211 | * Create a buffered parser input for the progressive parsing of a FILE * |
| 212 | * buffered C I/O |
| 213 | * |
| 214 | * Returns the new parser input or NULL |
| 215 | */ |
| 216 | xmlParserInputBufferPtr |
| 217 | xmlParserInputBufferCreateFile(FILE *file, xmlCharEncoding enc) { |
| 218 | xmlParserInputBufferPtr ret; |
| 219 | |
| 220 | if (file == NULL) return(NULL); |
| 221 | |
| 222 | ret = xmlAllocParserInputBuffer(enc); |
| 223 | if (ret != NULL) |
| 224 | ret->file = file; |
| 225 | |
| 226 | return(ret); |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * xmlParserInputBufferCreateFd: |
| 231 | * @fd: a file descriptor number |
| 232 | * @enc: the charset encoding if known |
| 233 | * |
| 234 | * Create a buffered parser input for the progressive parsing for the input |
| 235 | * from a file descriptor |
| 236 | * |
| 237 | * Returns the new parser input or NULL |
| 238 | */ |
| 239 | xmlParserInputBufferPtr |
| 240 | xmlParserInputBufferCreateFd(int fd, xmlCharEncoding enc) { |
| 241 | xmlParserInputBufferPtr ret; |
| 242 | |
| 243 | if (fd < 0) return(NULL); |
| 244 | |
| 245 | ret = xmlAllocParserInputBuffer(enc); |
| 246 | if (ret != NULL) |
| 247 | ret->fd = fd; |
| 248 | |
| 249 | return(ret); |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * xmlParserInputBufferGrow: |
| 254 | * @in: a buffered parser input |
| 255 | * @len: indicative value of the amount of chars to read |
| 256 | * |
| 257 | * Grow up the content of the input buffer, the old data are preserved |
| 258 | * This routine handle the I18N transcoding to internal UTF-8 |
Daniel Veillard | b96e643 | 1999-08-29 21:02:19 +0000 | [diff] [blame] | 259 | * TODO: one should be able to remove one extra copy |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 260 | * |
| 261 | * Returns the number of chars read and stored in the buffer, or -1 |
| 262 | * in case of error. |
| 263 | */ |
| 264 | int |
| 265 | xmlParserInputBufferGrow(xmlParserInputBufferPtr in, int len) { |
| 266 | char *buffer = NULL; |
| 267 | #ifdef HAVE_ZLIB_H |
| 268 | gzFile input = (gzFile) in->gzfile; |
| 269 | #endif |
| 270 | int res = 0; |
| 271 | int nbchars = 0; |
| 272 | int buffree; |
| 273 | |
| 274 | if ((len <= MINLEN) && (len != 4)) |
| 275 | len = MINLEN; |
| 276 | buffree = in->buffer->size - in->buffer->use; |
| 277 | if (buffree <= 0) { |
| 278 | fprintf(stderr, "xmlParserInputBufferGrow : buffer full !\n"); |
| 279 | return(0); |
| 280 | } |
| 281 | if (len > buffree) |
| 282 | len = buffree; |
| 283 | |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 284 | buffer = xmlMalloc((len + 1) * sizeof(char)); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 285 | if (buffer == NULL) { |
| 286 | fprintf(stderr, "xmlParserInputBufferGrow : out of memory !\n"); |
| 287 | return(-1); |
| 288 | } |
Daniel Veillard | 7f7d111 | 1999-09-22 09:46:25 +0000 | [diff] [blame] | 289 | if (in->netIO != NULL) { |
| 290 | res = xmlNanoHTTPRead(in->netIO, &buffer[0], len); |
| 291 | } else if (in->file != NULL) { |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 292 | res = fread(&buffer[0], 1, len, in->file); |
| 293 | #ifdef HAVE_ZLIB_H |
| 294 | } else if (in->gzfile != NULL) { |
| 295 | res = gzread(input, &buffer[0], len); |
| 296 | #endif |
| 297 | } else if (in->fd >= 0) { |
| 298 | res = read(in->fd, &buffer[0], len); |
| 299 | } else { |
| 300 | fprintf(stderr, "xmlParserInputBufferGrow : no input !\n"); |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 301 | xmlFree(buffer); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 302 | return(-1); |
| 303 | } |
| 304 | if (res == 0) { |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 305 | xmlFree(buffer); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 306 | return(0); |
| 307 | } |
| 308 | if (res < 0) { |
| 309 | perror ("read error"); |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 310 | xmlFree(buffer); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 311 | return(-1); |
| 312 | } |
| 313 | if (in->encoder != NULL) { |
Daniel Veillard | dd6b367 | 1999-09-23 22:19:22 +0000 | [diff] [blame] | 314 | xmlChar *buf; |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 315 | |
Daniel Veillard | dd6b367 | 1999-09-23 22:19:22 +0000 | [diff] [blame] | 316 | buf = (xmlChar *) xmlMalloc((res + 1) * 2 * sizeof(xmlChar)); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 317 | if (buf == NULL) { |
| 318 | fprintf(stderr, "xmlParserInputBufferGrow : out of memory !\n"); |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 319 | xmlFree(buffer); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 320 | return(-1); |
| 321 | } |
Daniel Veillard | dd6b367 | 1999-09-23 22:19:22 +0000 | [diff] [blame] | 322 | nbchars = in->encoder->input(buf, (res + 1) * 2 * sizeof(xmlChar), |
Daniel Veillard | b96e643 | 1999-08-29 21:02:19 +0000 | [diff] [blame] | 323 | BAD_CAST buffer, res); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 324 | buf[nbchars] = 0; |
Daniel Veillard | dd6b367 | 1999-09-23 22:19:22 +0000 | [diff] [blame] | 325 | xmlBufferAdd(in->buffer, (xmlChar *) buf, nbchars); |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 326 | xmlFree(buf); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 327 | } else { |
| 328 | nbchars = res; |
| 329 | buffer[nbchars] = 0; |
Daniel Veillard | dd6b367 | 1999-09-23 22:19:22 +0000 | [diff] [blame] | 330 | xmlBufferAdd(in->buffer, (xmlChar *) buffer, nbchars); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 331 | } |
| 332 | #ifdef DEBUG_INPUT |
| 333 | fprintf(stderr, "I/O: read %d chars, buffer %d/%d\n", |
| 334 | nbchars, in->buffer->use, in->buffer->size); |
| 335 | #endif |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 336 | xmlFree(buffer); |
Daniel Veillard | e2d034d | 1999-07-27 19:52:06 +0000 | [diff] [blame] | 337 | return(nbchars); |
| 338 | } |
| 339 | |
| 340 | /** |
| 341 | * xmlParserInputBufferRead: |
| 342 | * @in: a buffered parser input |
| 343 | * @len: indicative value of the amount of chars to read |
| 344 | * |
| 345 | * Refresh the content of the input buffer, the old data are considered |
| 346 | * consumed |
| 347 | * This routine handle the I18N transcoding to internal UTF-8 |
| 348 | * |
| 349 | * Returns the number of chars read and stored in the buffer, or -1 |
| 350 | * in case of error. |
| 351 | */ |
| 352 | int |
| 353 | xmlParserInputBufferRead(xmlParserInputBufferPtr in, int len) { |
| 354 | /* xmlBufferEmpty(in->buffer); */ |
| 355 | return(xmlParserInputBufferGrow(in, len)); |
| 356 | } |
| 357 | |
Daniel Veillard | b05deb7 | 1999-08-10 19:04:08 +0000 | [diff] [blame] | 358 | /* |
| 359 | * xmlParserGetDirectory: |
| 360 | * @filename: the path to a file |
| 361 | * |
| 362 | * lookup the directory for that file |
| 363 | * |
| 364 | * Returns a new allocated string containing the directory, or NULL. |
| 365 | */ |
| 366 | char * |
| 367 | xmlParserGetDirectory(const char *filename) { |
| 368 | char *ret = NULL; |
| 369 | char dir[1024]; |
| 370 | char *cur; |
| 371 | char sep = '/'; |
| 372 | |
| 373 | if (filename == NULL) return(NULL); |
| 374 | #ifdef WIN32 |
| 375 | sep = '\\'; |
| 376 | #endif |
| 377 | |
| 378 | strncpy(dir, filename, 1023); |
| 379 | dir[1023] = 0; |
| 380 | cur = &dir[strlen(dir)]; |
| 381 | while (cur > dir) { |
| 382 | if (*cur == sep) break; |
| 383 | cur --; |
| 384 | } |
| 385 | if (*cur == sep) { |
| 386 | if (cur == dir) dir[1] = 0; |
| 387 | else *cur = 0; |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 388 | ret = xmlMemStrdup(dir); |
Daniel Veillard | b05deb7 | 1999-08-10 19:04:08 +0000 | [diff] [blame] | 389 | } else { |
| 390 | if (getcwd(dir, 1024) != NULL) { |
| 391 | dir[1023] = 0; |
Daniel Veillard | 6454aec | 1999-09-02 22:04:43 +0000 | [diff] [blame] | 392 | ret = xmlMemStrdup(dir); |
Daniel Veillard | b05deb7 | 1999-08-10 19:04:08 +0000 | [diff] [blame] | 393 | } |
| 394 | } |
| 395 | return(ret); |
| 396 | } |
| 397 | |
Daniel Veillard | b96e643 | 1999-08-29 21:02:19 +0000 | [diff] [blame] | 398 | /**************************************************************** |
| 399 | * * |
| 400 | * External entities loading * |
| 401 | * * |
| 402 | ****************************************************************/ |
| 403 | |
| 404 | /* |
| 405 | * xmlDefaultExternalEntityLoader: |
| 406 | * @URL: the URL for the entity to load |
| 407 | * @ID: the System ID for the entity to load |
| 408 | * @context: the context in which the entity is called or NULL |
| 409 | * |
| 410 | * By default we don't load external entitites, yet. |
| 411 | * TODO: get a sample http implementation and scan for existing one |
| 412 | * at compile time. |
| 413 | * |
| 414 | * Returns a new allocated xmlParserInputPtr, or NULL. |
| 415 | */ |
| 416 | static |
| 417 | xmlParserInputPtr |
| 418 | xmlDefaultExternalEntityLoader(const char *URL, const char *ID, |
| 419 | xmlParserInputPtr context) { |
| 420 | #ifdef DEBUG_EXTERNAL_ENTITIES |
| 421 | fprintf(stderr, "xmlDefaultExternalEntityLoader(%s, xxx)\n", URL); |
| 422 | #endif |
| 423 | return(NULL); |
| 424 | } |
| 425 | |
| 426 | static xmlExternalEntityLoader xmlCurrentExternalEntityLoader = |
| 427 | xmlDefaultExternalEntityLoader; |
| 428 | |
| 429 | /* |
| 430 | * xmlSetExternalEntityLoader: |
| 431 | * @f: the new entity resolver function |
| 432 | * |
| 433 | * Changes the defaultexternal entity resolver function for the application |
| 434 | */ |
| 435 | void |
| 436 | xmlSetExternalEntityLoader(xmlExternalEntityLoader f) { |
| 437 | xmlCurrentExternalEntityLoader = f; |
| 438 | } |
| 439 | |
| 440 | /* |
| 441 | * xmlGetExternalEntityLoader: |
| 442 | * |
| 443 | * Get the default external entity resolver function for the application |
| 444 | * |
| 445 | * Returns the xmlExternalEntityLoader function pointer |
| 446 | */ |
| 447 | xmlExternalEntityLoader |
| 448 | xmlGetExternalEntityLoader(void) { |
| 449 | return(xmlCurrentExternalEntityLoader); |
| 450 | } |
| 451 | |
| 452 | /* |
| 453 | * xmlLoadExternalEntity: |
| 454 | * @URL: the URL for the entity to load |
| 455 | * @ID: the System ID for the entity to load |
| 456 | * @context: the context in which the entity is called or NULL |
| 457 | * |
| 458 | * Load an external entity, note that the use of this function for |
| 459 | * unparsed entities may generate problems |
| 460 | * TODO: a more generic External entitiy API must be designed |
| 461 | * |
| 462 | * Returns the xmlParserInputPtr or NULL |
| 463 | */ |
| 464 | xmlParserInputPtr |
| 465 | xmlLoadExternalEntity(const char *URL, const char *ID, |
| 466 | xmlParserInputPtr context) { |
| 467 | return(xmlCurrentExternalEntityLoader(URL, ID, context)); |
| 468 | } |
| 469 | |