Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +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 | * 14 Nov 2000 ht - for VMS, truncated name of long functions to under 32 char |
| 9 | */ |
| 10 | |
| 11 | #ifdef WIN32 |
| 12 | #include "win32config.h" |
| 13 | #else |
| 14 | #include "config.h" |
| 15 | #endif |
| 16 | |
| 17 | #include <stdio.h> |
| 18 | #include <string.h> |
| 19 | #include <errno.h> |
| 20 | |
| 21 | #ifdef HAVE_SYS_TYPES_H |
| 22 | #include <sys/types.h> |
| 23 | #endif |
| 24 | #ifdef HAVE_SYS_STAT_H |
| 25 | #include <sys/stat.h> |
| 26 | #endif |
| 27 | #ifdef HAVE_FCNTL_H |
| 28 | #include <fcntl.h> |
| 29 | #endif |
| 30 | #ifdef HAVE_UNISTD_H |
| 31 | #include <unistd.h> |
| 32 | #endif |
| 33 | #ifdef HAVE_STDLIB_H |
| 34 | #include <stdlib.h> |
| 35 | #endif |
| 36 | #ifdef HAVE_ZLIB_H |
| 37 | #include <zlib.h> |
| 38 | #endif |
| 39 | |
| 40 | /* Figure a portable way to know if a file is a directory. */ |
| 41 | #ifndef HAVE_STAT |
| 42 | # ifdef HAVE__STAT |
| 43 | # define stat(x,y) _stat(x,y) |
| 44 | # define HAVE_STAT |
| 45 | # endif |
| 46 | #endif |
| 47 | #ifdef HAVE_STAT |
| 48 | # ifndef S_ISDIR |
| 49 | # ifdef _S_ISDIR |
| 50 | # define S_ISDIR(x) _S_ISDIR(x) |
| 51 | # else |
| 52 | # ifdef S_IFDIR |
| 53 | # ifndef S_IFMT |
| 54 | # ifdef _S_IFMT |
| 55 | # define S_IFMT _S_IFMT |
| 56 | # endif |
| 57 | # endif |
| 58 | # ifdef S_IFMT |
| 59 | # define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) |
| 60 | # endif |
| 61 | # endif |
| 62 | # endif |
| 63 | # endif |
| 64 | #endif |
| 65 | |
| 66 | #include <libxml/xmlmemory.h> |
| 67 | #include <libxml/parser.h> |
| 68 | #include <libxml/parserInternals.h> |
| 69 | #include <libxml/xmlIO.h> |
| 70 | #include <libxml/nanohttp.h> |
| 71 | #include <libxml/nanoftp.h> |
| 72 | #include <libxml/xmlerror.h> |
| 73 | |
| 74 | #ifdef VMS |
| 75 | #define xmlRegisterDefaultInputCallbacks xmlRegisterDefInputCallbacks |
| 76 | #define xmlRegisterDefaultOutputCallbacks xmlRegisterDefOutputCallbacks |
| 77 | #endif |
| 78 | |
| 79 | /* #define VERBOSE_FAILURE */ |
| 80 | /* #define DEBUG_EXTERNAL_ENTITIES */ |
| 81 | /* #define DEBUG_INPUT */ |
| 82 | |
| 83 | #ifdef DEBUG_INPUT |
| 84 | #define MINLEN 40 |
| 85 | #else |
| 86 | #define MINLEN 4000 |
| 87 | #endif |
| 88 | |
| 89 | /* |
| 90 | * Input I/O callback sets |
| 91 | */ |
| 92 | typedef struct _xmlInputCallback { |
| 93 | xmlInputMatchCallback matchcallback; |
| 94 | xmlInputOpenCallback opencallback; |
| 95 | xmlInputReadCallback readcallback; |
| 96 | xmlInputCloseCallback closecallback; |
| 97 | } xmlInputCallback; |
| 98 | |
| 99 | #define MAX_INPUT_CALLBACK 15 |
| 100 | |
| 101 | xmlInputCallback xmlInputCallbackTable[MAX_INPUT_CALLBACK]; |
| 102 | int xmlInputCallbackNr = 0; |
| 103 | int xmlInputCallbackInitialized = 0; |
| 104 | |
| 105 | /* |
| 106 | * Output I/O callback sets |
| 107 | */ |
| 108 | typedef struct _xmlOutputCallback { |
| 109 | xmlOutputMatchCallback matchcallback; |
| 110 | xmlOutputOpenCallback opencallback; |
| 111 | xmlOutputWriteCallback writecallback; |
| 112 | xmlOutputCloseCallback closecallback; |
| 113 | } xmlOutputCallback; |
| 114 | |
| 115 | #define MAX_OUTPUT_CALLBACK 15 |
| 116 | |
| 117 | xmlOutputCallback xmlOutputCallbackTable[MAX_OUTPUT_CALLBACK]; |
| 118 | int xmlOutputCallbackNr = 0; |
| 119 | int xmlOutputCallbackInitialized = 0; |
| 120 | |
| 121 | /************************************************************************ |
| 122 | * * |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 123 | * When running GCC in vaacum cleaner mode * |
| 124 | * * |
| 125 | ************************************************************************/ |
| 126 | |
| 127 | #ifdef __GNUC__ |
| 128 | #define UNUSED __attribute__((__unused__)) |
| 129 | #else |
| 130 | #define UNUSED |
| 131 | #endif |
| 132 | |
| 133 | /************************************************************************ |
| 134 | * * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 135 | * Standard I/O for file accesses * |
| 136 | * * |
| 137 | ************************************************************************/ |
| 138 | |
| 139 | /** |
| 140 | * xmlCheckFilename |
| 141 | * @path: the path to check |
| 142 | * |
| 143 | * function checks to see if @path is a valid source |
| 144 | * (file, socket...) for XML. |
| 145 | * |
| 146 | * if stat is not available on the target machine, |
| 147 | * returns 1. if stat fails, returns 0 (if calling |
| 148 | * stat on the filename fails, it can't be right). |
| 149 | * if stat succeeds and the file is a directory, |
| 150 | * sets errno to EISDIR and returns 0. otherwise |
| 151 | * returns 1. |
| 152 | */ |
| 153 | |
| 154 | static int |
| 155 | xmlCheckFilename (const char *path) |
| 156 | { |
| 157 | #ifdef HAVE_STAT |
| 158 | #ifdef S_ISDIR |
| 159 | struct stat stat_buffer; |
| 160 | |
| 161 | if (stat(path, &stat_buffer) == -1) |
| 162 | return 0; |
| 163 | |
| 164 | if (S_ISDIR(stat_buffer.st_mode)) { |
| 165 | errno = EISDIR; |
| 166 | return 0; |
| 167 | } |
| 168 | |
| 169 | #endif |
| 170 | #endif |
| 171 | return 1; |
| 172 | } |
| 173 | |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 174 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 175 | xmlNop(void) { |
| 176 | return(0); |
| 177 | } |
| 178 | |
| 179 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 180 | * xmlFdRead: |
| 181 | * @context: the I/O context |
| 182 | * @buffer: where to drop data |
| 183 | * @len: number of bytes to read |
| 184 | * |
| 185 | * Read @len bytes to @buffer from the I/O channel. |
| 186 | * |
| 187 | * Returns the number of bytes written |
| 188 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 189 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 190 | xmlFdRead (void * context, char * buffer, int len) { |
| 191 | return(read((int) context, &buffer[0], len)); |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * xmlFdWrite: |
| 196 | * @context: the I/O context |
| 197 | * @buffer: where to get data |
| 198 | * @len: number of bytes to write |
| 199 | * |
| 200 | * Write @len bytes from @buffer to the I/O channel. |
| 201 | * |
| 202 | * Returns the number of bytes written |
| 203 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 204 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 205 | xmlFdWrite (void * context, const char * buffer, int len) { |
| 206 | return(write((int) context, &buffer[0], len)); |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * xmlFdClose: |
| 211 | * @context: the I/O context |
| 212 | * |
| 213 | * Close an I/O channel |
| 214 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 215 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 216 | xmlFdClose (void * context) { |
| 217 | close((int) context); |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * xmlFileMatch: |
| 222 | * @filename: the URI for matching |
| 223 | * |
| 224 | * input from FILE * |
| 225 | * |
| 226 | * Returns 1 if matches, 0 otherwise |
| 227 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 228 | static int |
| 229 | xmlFileMatch (const char *filename UNUSED) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 230 | return(1); |
| 231 | } |
| 232 | |
| 233 | /** |
| 234 | * xmlFileOpen: |
| 235 | * @filename: the URI for matching |
| 236 | * |
| 237 | * input from FILE *, supports compressed input |
| 238 | * if @filename is " " then the standard input is used |
| 239 | * |
| 240 | * Returns an I/O context or NULL in case of error |
| 241 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 242 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 243 | xmlFileOpen (const char *filename) { |
| 244 | const char *path = NULL; |
| 245 | FILE *fd; |
| 246 | |
| 247 | if (!strcmp(filename, "-")) { |
| 248 | fd = stdin; |
| 249 | return((void *) fd); |
| 250 | } |
| 251 | |
| 252 | if (!strncmp(filename, "file://localhost", 16)) |
| 253 | path = &filename[16]; |
| 254 | else if (!strncmp(filename, "file:///", 8)) |
| 255 | path = &filename[8]; |
| 256 | else |
| 257 | path = filename; |
| 258 | |
| 259 | if (path == NULL) |
| 260 | return(NULL); |
| 261 | if (!xmlCheckFilename(path)) |
| 262 | return(NULL); |
| 263 | |
| 264 | #ifdef WIN32 |
| 265 | fd = fopen(path, "rb"); |
| 266 | #else |
| 267 | fd = fopen(path, "r"); |
| 268 | #endif /* WIN32 */ |
| 269 | return((void *) fd); |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * xmlFileOpenW: |
| 274 | * @filename: the URI for matching |
| 275 | * |
| 276 | * output to from FILE *, |
| 277 | * if @filename is "-" then the standard output is used |
| 278 | * |
| 279 | * Returns an I/O context or NULL in case of error |
| 280 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 281 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 282 | xmlFileOpenW (const char *filename) { |
| 283 | const char *path = NULL; |
| 284 | FILE *fd; |
| 285 | |
| 286 | if (!strcmp(filename, "-")) { |
| 287 | fd = stdout; |
| 288 | return((void *) fd); |
| 289 | } |
| 290 | |
| 291 | if (!strncmp(filename, "file://localhost", 16)) |
| 292 | path = &filename[16]; |
| 293 | else if (!strncmp(filename, "file:///", 8)) |
| 294 | path = &filename[8]; |
| 295 | else |
| 296 | path = filename; |
| 297 | |
| 298 | if (path == NULL) |
| 299 | return(NULL); |
| 300 | |
| 301 | fd = fopen(path, "w"); |
| 302 | return((void *) fd); |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * xmlFileRead: |
| 307 | * @context: the I/O context |
| 308 | * @buffer: where to drop data |
| 309 | * @len: number of bytes to write |
| 310 | * |
| 311 | * Read @len bytes to @buffer from the I/O channel. |
| 312 | * |
| 313 | * Returns the number of bytes written |
| 314 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 315 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 316 | xmlFileRead (void * context, char * buffer, int len) { |
| 317 | return(fread(&buffer[0], 1, len, (FILE *) context)); |
| 318 | } |
| 319 | |
| 320 | /** |
| 321 | * xmlFileWrite: |
| 322 | * @context: the I/O context |
| 323 | * @buffer: where to drop data |
| 324 | * @len: number of bytes to write |
| 325 | * |
| 326 | * Write @len bytes from @buffer to the I/O channel. |
| 327 | * |
| 328 | * Returns the number of bytes written |
| 329 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 330 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 331 | xmlFileWrite (void * context, const char * buffer, int len) { |
| 332 | return(fwrite(&buffer[0], 1, len, (FILE *) context)); |
| 333 | } |
| 334 | |
| 335 | /** |
| 336 | * xmlFileClose: |
| 337 | * @context: the I/O context |
| 338 | * |
| 339 | * Close an I/O channel |
| 340 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 341 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 342 | xmlFileClose (void * context) { |
| 343 | fclose((FILE *) context); |
| 344 | } |
| 345 | |
| 346 | /** |
| 347 | * xmlFileFlush: |
| 348 | * @context: the I/O context |
| 349 | * |
| 350 | * Flush an I/O channel |
| 351 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 352 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 353 | xmlFileFlush (void * context) { |
| 354 | fflush((FILE *) context); |
| 355 | } |
| 356 | |
| 357 | #ifdef HAVE_ZLIB_H |
| 358 | /************************************************************************ |
| 359 | * * |
| 360 | * I/O for compressed file accesses * |
| 361 | * * |
| 362 | ************************************************************************/ |
| 363 | /** |
| 364 | * xmlGzfileMatch: |
| 365 | * @filename: the URI for matching |
| 366 | * |
| 367 | * input from compressed file test |
| 368 | * |
| 369 | * Returns 1 if matches, 0 otherwise |
| 370 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 371 | static int |
| 372 | xmlGzfileMatch (const char *filename UNUSED) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 373 | return(1); |
| 374 | } |
| 375 | |
| 376 | /** |
| 377 | * xmlGzfileOpen: |
| 378 | * @filename: the URI for matching |
| 379 | * |
| 380 | * input from compressed file open |
| 381 | * if @filename is " " then the standard input is used |
| 382 | * |
| 383 | * Returns an I/O context or NULL in case of error |
| 384 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 385 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 386 | xmlGzfileOpen (const char *filename) { |
| 387 | const char *path = NULL; |
| 388 | gzFile fd; |
| 389 | |
| 390 | if (!strcmp(filename, "-")) { |
| 391 | fd = gzdopen(fileno(stdin), "rb"); |
| 392 | return((void *) fd); |
| 393 | } |
| 394 | |
| 395 | if (!strncmp(filename, "file://localhost", 16)) |
| 396 | path = &filename[16]; |
| 397 | else if (!strncmp(filename, "file:///", 8)) |
| 398 | path = &filename[7]; |
| 399 | else |
| 400 | path = filename; |
| 401 | |
| 402 | if (path == NULL) |
| 403 | return(NULL); |
| 404 | if (!xmlCheckFilename(path)) |
| 405 | return(NULL); |
| 406 | |
| 407 | fd = gzopen(path, "rb"); |
| 408 | return((void *) fd); |
| 409 | } |
| 410 | |
| 411 | /** |
| 412 | * xmlGzfileOpenW: |
| 413 | * @filename: the URI for matching |
| 414 | * @compression: the compression factor (0 - 9 included) |
| 415 | * |
| 416 | * input from compressed file open |
| 417 | * if @filename is " " then the standard input is used |
| 418 | * |
| 419 | * Returns an I/O context or NULL in case of error |
| 420 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 421 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 422 | xmlGzfileOpenW (const char *filename, int compression) { |
| 423 | const char *path = NULL; |
| 424 | char mode[15]; |
| 425 | gzFile fd; |
| 426 | |
| 427 | sprintf(mode, "wb%d", compression); |
| 428 | if (!strcmp(filename, "-")) { |
| 429 | fd = gzdopen(1, mode); |
| 430 | return((void *) fd); |
| 431 | } |
| 432 | |
| 433 | if (!strncmp(filename, "file://localhost", 16)) |
| 434 | path = &filename[16]; |
| 435 | else if (!strncmp(filename, "file:///", 8)) |
| 436 | path = &filename[8]; |
| 437 | else |
| 438 | path = filename; |
| 439 | |
| 440 | if (path == NULL) |
| 441 | return(NULL); |
| 442 | |
| 443 | fd = gzopen(path, mode); |
| 444 | return((void *) fd); |
| 445 | } |
| 446 | |
| 447 | /** |
| 448 | * xmlGzfileRead: |
| 449 | * @context: the I/O context |
| 450 | * @buffer: where to drop data |
| 451 | * @len: number of bytes to write |
| 452 | * |
| 453 | * Read @len bytes to @buffer from the compressed I/O channel. |
| 454 | * |
| 455 | * Returns the number of bytes written |
| 456 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 457 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 458 | xmlGzfileRead (void * context, char * buffer, int len) { |
| 459 | return(gzread((gzFile) context, &buffer[0], len)); |
| 460 | } |
| 461 | |
| 462 | /** |
| 463 | * xmlGzfileWrite: |
| 464 | * @context: the I/O context |
| 465 | * @buffer: where to drop data |
| 466 | * @len: number of bytes to write |
| 467 | * |
| 468 | * Write @len bytes from @buffer to the compressed I/O channel. |
| 469 | * |
| 470 | * Returns the number of bytes written |
| 471 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 472 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 473 | xmlGzfileWrite (void * context, const char * buffer, int len) { |
| 474 | return(gzwrite((gzFile) context, (char *) &buffer[0], len)); |
| 475 | } |
| 476 | |
| 477 | /** |
| 478 | * xmlGzfileClose: |
| 479 | * @context: the I/O context |
| 480 | * |
| 481 | * Close a compressed I/O channel |
| 482 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 483 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 484 | xmlGzfileClose (void * context) { |
| 485 | gzclose((gzFile) context); |
| 486 | } |
| 487 | #endif /* HAVE_ZLIB_H */ |
| 488 | |
| 489 | #ifdef LIBXML_HTTP_ENABLED |
| 490 | /************************************************************************ |
| 491 | * * |
| 492 | * I/O for HTTP file accesses * |
| 493 | * * |
| 494 | ************************************************************************/ |
| 495 | /** |
| 496 | * xmlIOHTTPMatch: |
| 497 | * @filename: the URI for matching |
| 498 | * |
| 499 | * check if the URI matches an HTTP one |
| 500 | * |
| 501 | * Returns 1 if matches, 0 otherwise |
| 502 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 503 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 504 | xmlIOHTTPMatch (const char *filename) { |
| 505 | if (!strncmp(filename, "http://", 7)) |
| 506 | return(1); |
| 507 | return(0); |
| 508 | } |
| 509 | |
| 510 | /** |
| 511 | * xmlIOHTTPOpen: |
| 512 | * @filename: the URI for matching |
| 513 | * |
| 514 | * open an HTTP I/O channel |
| 515 | * |
| 516 | * Returns an I/O context or NULL in case of error |
| 517 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 518 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 519 | xmlIOHTTPOpen (const char *filename) { |
| 520 | return(xmlNanoHTTPOpen(filename, NULL)); |
| 521 | } |
| 522 | |
| 523 | /** |
| 524 | * xmlIOHTTPRead: |
| 525 | * @context: the I/O context |
| 526 | * @buffer: where to drop data |
| 527 | * @len: number of bytes to write |
| 528 | * |
| 529 | * Read @len bytes to @buffer from the I/O channel. |
| 530 | * |
| 531 | * Returns the number of bytes written |
| 532 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 533 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 534 | xmlIOHTTPRead(void * context, char * buffer, int len) { |
| 535 | return(xmlNanoHTTPRead(context, &buffer[0], len)); |
| 536 | } |
| 537 | |
| 538 | /** |
| 539 | * xmlIOHTTPClose: |
| 540 | * @context: the I/O context |
| 541 | * |
| 542 | * Close an HTTP I/O channel |
| 543 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 544 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 545 | xmlIOHTTPClose (void * context) { |
| 546 | xmlNanoHTTPClose(context); |
| 547 | } |
| 548 | #endif /* LIBXML_HTTP_ENABLED */ |
| 549 | |
| 550 | #ifdef LIBXML_FTP_ENABLED |
| 551 | /************************************************************************ |
| 552 | * * |
| 553 | * I/O for FTP file accesses * |
| 554 | * * |
| 555 | ************************************************************************/ |
| 556 | /** |
| 557 | * xmlIOFTPMatch: |
| 558 | * @filename: the URI for matching |
| 559 | * |
| 560 | * check if the URI matches an FTP one |
| 561 | * |
| 562 | * Returns 1 if matches, 0 otherwise |
| 563 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 564 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 565 | xmlIOFTPMatch (const char *filename) { |
| 566 | if (!strncmp(filename, "ftp://", 6)) |
| 567 | return(1); |
| 568 | return(0); |
| 569 | } |
| 570 | |
| 571 | /** |
| 572 | * xmlIOFTPOpen: |
| 573 | * @filename: the URI for matching |
| 574 | * |
| 575 | * open an FTP I/O channel |
| 576 | * |
| 577 | * Returns an I/O context or NULL in case of error |
| 578 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 579 | static void * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 580 | xmlIOFTPOpen (const char *filename) { |
| 581 | return(xmlNanoFTPOpen(filename)); |
| 582 | } |
| 583 | |
| 584 | /** |
| 585 | * xmlIOFTPRead: |
| 586 | * @context: the I/O context |
| 587 | * @buffer: where to drop data |
| 588 | * @len: number of bytes to write |
| 589 | * |
| 590 | * Read @len bytes to @buffer from the I/O channel. |
| 591 | * |
| 592 | * Returns the number of bytes written |
| 593 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 594 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 595 | xmlIOFTPRead(void * context, char * buffer, int len) { |
| 596 | return(xmlNanoFTPRead(context, &buffer[0], len)); |
| 597 | } |
| 598 | |
| 599 | /** |
| 600 | * xmlIOFTPClose: |
| 601 | * @context: the I/O context |
| 602 | * |
| 603 | * Close an FTP I/O channel |
| 604 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 605 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 606 | xmlIOFTPClose (void * context) { |
| 607 | xmlNanoFTPClose(context); |
| 608 | } |
| 609 | #endif /* LIBXML_FTP_ENABLED */ |
| 610 | |
| 611 | |
| 612 | /** |
| 613 | * xmlRegisterInputCallbacks: |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 614 | * @matchFunc: the xmlInputMatchCallback |
| 615 | * @openFunc: the xmlInputOpenCallback |
| 616 | * @readFunc: the xmlInputReadCallback |
| 617 | * @closeFunc: the xmlInputCloseCallback |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 618 | * |
| 619 | * Register a new set of I/O callback for handling parser input. |
| 620 | * |
| 621 | * Returns the registered handler number or -1 in case of error |
| 622 | */ |
| 623 | int |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 624 | xmlRegisterInputCallbacks(xmlInputMatchCallback matchFunc, |
| 625 | xmlInputOpenCallback openFunc, xmlInputReadCallback readFunc, |
| 626 | xmlInputCloseCallback closeFunc) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 627 | if (xmlInputCallbackNr >= MAX_INPUT_CALLBACK) { |
| 628 | return(-1); |
| 629 | } |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 630 | xmlInputCallbackTable[xmlInputCallbackNr].matchcallback = matchFunc; |
| 631 | xmlInputCallbackTable[xmlInputCallbackNr].opencallback = openFunc; |
| 632 | xmlInputCallbackTable[xmlInputCallbackNr].readcallback = readFunc; |
| 633 | xmlInputCallbackTable[xmlInputCallbackNr].closecallback = closeFunc; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 634 | return(xmlInputCallbackNr++); |
| 635 | } |
| 636 | |
| 637 | /** |
| 638 | * xmlRegisterOutputCallbacks: |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 639 | * @matchFunc: the xmlOutputMatchCallback |
| 640 | * @openFunc: the xmlOutputOpenCallback |
| 641 | * @writeFunc: the xmlOutputWriteCallback |
| 642 | * @closeFunc: the xmlOutputCloseCallback |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 643 | * |
| 644 | * Register a new set of I/O callback for handling output. |
| 645 | * |
| 646 | * Returns the registered handler number or -1 in case of error |
| 647 | */ |
| 648 | int |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 649 | xmlRegisterOutputCallbacks(xmlOutputMatchCallback matchFunc, |
| 650 | xmlOutputOpenCallback openFunc, xmlOutputWriteCallback writeFunc, |
| 651 | xmlOutputCloseCallback closeFunc) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 652 | if (xmlOutputCallbackNr >= MAX_INPUT_CALLBACK) { |
| 653 | return(-1); |
| 654 | } |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame^] | 655 | xmlOutputCallbackTable[xmlOutputCallbackNr].matchcallback = matchFunc; |
| 656 | xmlOutputCallbackTable[xmlOutputCallbackNr].opencallback = openFunc; |
| 657 | xmlOutputCallbackTable[xmlOutputCallbackNr].writecallback = writeFunc; |
| 658 | xmlOutputCallbackTable[xmlOutputCallbackNr].closecallback = closeFunc; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 659 | return(xmlOutputCallbackNr++); |
| 660 | } |
| 661 | |
| 662 | /** |
| 663 | * xmlRegisterDefaultInputCallbacks: |
| 664 | * |
| 665 | * Registers the default compiled-in I/O handlers. |
| 666 | */ |
| 667 | void |
| 668 | #ifdef VMS |
| 669 | xmlRegisterDefInputCallbacks |
| 670 | #else |
| 671 | xmlRegisterDefaultInputCallbacks |
| 672 | #endif |
| 673 | (void) { |
| 674 | if (xmlInputCallbackInitialized) |
| 675 | return; |
| 676 | |
| 677 | xmlRegisterInputCallbacks(xmlFileMatch, xmlFileOpen, |
| 678 | xmlFileRead, xmlFileClose); |
| 679 | #ifdef HAVE_ZLIB_H |
| 680 | xmlRegisterInputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
| 681 | xmlGzfileRead, xmlGzfileClose); |
| 682 | #endif /* HAVE_ZLIB_H */ |
| 683 | |
| 684 | #ifdef LIBXML_HTTP_ENABLED |
| 685 | xmlRegisterInputCallbacks(xmlIOHTTPMatch, xmlIOHTTPOpen, |
| 686 | xmlIOHTTPRead, xmlIOHTTPClose); |
| 687 | #endif /* LIBXML_HTTP_ENABLED */ |
| 688 | |
| 689 | #ifdef LIBXML_FTP_ENABLED |
| 690 | xmlRegisterInputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, |
| 691 | xmlIOFTPRead, xmlIOFTPClose); |
| 692 | #endif /* LIBXML_FTP_ENABLED */ |
| 693 | xmlInputCallbackInitialized = 1; |
| 694 | } |
| 695 | |
| 696 | /** |
| 697 | * xmlRegisterDefaultOutputCallbacks: |
| 698 | * |
| 699 | * Registers the default compiled-in I/O handlers. |
| 700 | */ |
| 701 | void |
| 702 | #ifdef VMS |
| 703 | xmlRegisterDefOutputCallbacks |
| 704 | #else |
| 705 | xmlRegisterDefaultOutputCallbacks |
| 706 | #endif |
| 707 | (void) { |
| 708 | if (xmlOutputCallbackInitialized) |
| 709 | return; |
| 710 | |
| 711 | xmlRegisterOutputCallbacks(xmlFileMatch, xmlFileOpenW, |
| 712 | xmlFileWrite, xmlFileClose); |
| 713 | /********************************* |
| 714 | No way a-priori to distinguish between gzipped files from |
| 715 | uncompressed ones except opening if existing then closing |
| 716 | and saving with same compression ratio ... a pain. |
| 717 | |
| 718 | #ifdef HAVE_ZLIB_H |
| 719 | xmlRegisterOutputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
| 720 | xmlGzfileWrite, xmlGzfileClose); |
| 721 | #endif |
| 722 | No HTTP PUT support yet, patches welcome |
| 723 | |
| 724 | #ifdef LIBXML_HTTP_ENABLED |
| 725 | xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPOpen, |
| 726 | xmlIOHTTPWrite, xmlIOHTTPClose); |
| 727 | #endif |
| 728 | |
| 729 | Nor FTP PUT .... |
| 730 | #ifdef LIBXML_FTP_ENABLED |
| 731 | xmlRegisterOutputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, |
| 732 | xmlIOFTPWrite, xmlIOFTPClose); |
| 733 | #endif |
| 734 | **********************************/ |
| 735 | xmlOutputCallbackInitialized = 1; |
| 736 | } |
| 737 | |
| 738 | /** |
| 739 | * xmlAllocParserInputBuffer: |
| 740 | * @enc: the charset encoding if known |
| 741 | * |
| 742 | * Create a buffered parser input for progressive parsing |
| 743 | * |
| 744 | * Returns the new parser input or NULL |
| 745 | */ |
| 746 | xmlParserInputBufferPtr |
| 747 | xmlAllocParserInputBuffer(xmlCharEncoding enc) { |
| 748 | xmlParserInputBufferPtr ret; |
| 749 | |
| 750 | ret = (xmlParserInputBufferPtr) xmlMalloc(sizeof(xmlParserInputBuffer)); |
| 751 | if (ret == NULL) { |
| 752 | xmlGenericError(xmlGenericErrorContext, |
| 753 | "xmlAllocParserInputBuffer : out of memory!\n"); |
| 754 | return(NULL); |
| 755 | } |
| 756 | memset(ret, 0, (size_t) sizeof(xmlParserInputBuffer)); |
| 757 | ret->buffer = xmlBufferCreate(); |
| 758 | if (ret->buffer == NULL) { |
| 759 | xmlFree(ret); |
| 760 | return(NULL); |
| 761 | } |
| 762 | ret->buffer->alloc = XML_BUFFER_ALLOC_DOUBLEIT; |
| 763 | ret->encoder = xmlGetCharEncodingHandler(enc); |
| 764 | if (ret->encoder != NULL) |
| 765 | ret->raw = xmlBufferCreate(); |
| 766 | else |
| 767 | ret->raw = NULL; |
| 768 | ret->readcallback = NULL; |
| 769 | ret->closecallback = NULL; |
| 770 | ret->context = NULL; |
| 771 | |
| 772 | return(ret); |
| 773 | } |
| 774 | |
| 775 | /** |
| 776 | * xmlAllocOutputBuffer: |
| 777 | * @encoder: the encoding converter or NULL |
| 778 | * |
| 779 | * Create a buffered parser output |
| 780 | * |
| 781 | * Returns the new parser output or NULL |
| 782 | */ |
| 783 | xmlOutputBufferPtr |
| 784 | xmlAllocOutputBuffer(xmlCharEncodingHandlerPtr encoder) { |
| 785 | xmlOutputBufferPtr ret; |
| 786 | |
| 787 | ret = (xmlOutputBufferPtr) xmlMalloc(sizeof(xmlOutputBuffer)); |
| 788 | if (ret == NULL) { |
| 789 | xmlGenericError(xmlGenericErrorContext, |
| 790 | "xmlAllocOutputBuffer : out of memory!\n"); |
| 791 | return(NULL); |
| 792 | } |
| 793 | memset(ret, 0, (size_t) sizeof(xmlOutputBuffer)); |
| 794 | ret->buffer = xmlBufferCreate(); |
| 795 | if (ret->buffer == NULL) { |
| 796 | xmlFree(ret); |
| 797 | return(NULL); |
| 798 | } |
| 799 | ret->buffer->alloc = XML_BUFFER_ALLOC_DOUBLEIT; |
| 800 | ret->encoder = encoder; |
| 801 | if (encoder != NULL) { |
| 802 | ret->conv = xmlBufferCreateSize(4000); |
| 803 | /* |
| 804 | * This call is designed to initiate the encoder state |
| 805 | */ |
| 806 | xmlCharEncOutFunc(encoder, ret->conv, NULL); |
| 807 | } else |
| 808 | ret->conv = NULL; |
| 809 | ret->writecallback = NULL; |
| 810 | ret->closecallback = NULL; |
| 811 | ret->context = NULL; |
| 812 | ret->written = 0; |
| 813 | |
| 814 | return(ret); |
| 815 | } |
| 816 | |
| 817 | /** |
| 818 | * xmlFreeParserInputBuffer: |
| 819 | * @in: a buffered parser input |
| 820 | * |
| 821 | * Free up the memory used by a buffered parser input |
| 822 | */ |
| 823 | void |
| 824 | xmlFreeParserInputBuffer(xmlParserInputBufferPtr in) { |
| 825 | if (in->raw) { |
| 826 | xmlBufferFree(in->raw); |
| 827 | in->raw = NULL; |
| 828 | } |
| 829 | if (in->encoder != NULL) { |
| 830 | xmlCharEncCloseFunc(in->encoder); |
| 831 | } |
| 832 | if (in->closecallback != NULL) { |
| 833 | in->closecallback(in->context); |
| 834 | } |
| 835 | if (in->buffer != NULL) { |
| 836 | xmlBufferFree(in->buffer); |
| 837 | in->buffer = NULL; |
| 838 | } |
| 839 | |
Daniel Veillard | 48b2f89 | 2001-02-25 16:11:03 +0000 | [diff] [blame] | 840 | MEM_CLEANUP(in, (size_t) sizeof(xmlParserInputBuffer)); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 841 | xmlFree(in); |
| 842 | } |
| 843 | |
| 844 | /** |
| 845 | * xmlOutputBufferClose: |
| 846 | * @out: a buffered output |
| 847 | * |
| 848 | * flushes and close the output I/O channel |
| 849 | * and free up all the associated resources |
| 850 | * |
| 851 | * Returns the number of byte written or -1 in case of error. |
| 852 | */ |
| 853 | int |
| 854 | xmlOutputBufferClose(xmlOutputBufferPtr out) { |
| 855 | int written; |
| 856 | |
| 857 | if (out == NULL) |
| 858 | return(-1); |
| 859 | if (out->writecallback != NULL) |
| 860 | xmlOutputBufferFlush(out); |
| 861 | if (out->closecallback != NULL) { |
| 862 | out->closecallback(out->context); |
| 863 | } |
| 864 | written = out->written; |
| 865 | if (out->conv) { |
| 866 | xmlBufferFree(out->conv); |
| 867 | out->conv = NULL; |
| 868 | } |
| 869 | if (out->encoder != NULL) { |
| 870 | xmlCharEncCloseFunc(out->encoder); |
| 871 | } |
| 872 | if (out->buffer != NULL) { |
| 873 | xmlBufferFree(out->buffer); |
| 874 | out->buffer = NULL; |
| 875 | } |
| 876 | |
Daniel Veillard | 48b2f89 | 2001-02-25 16:11:03 +0000 | [diff] [blame] | 877 | MEM_CLEANUP(out, (size_t) sizeof(xmlOutputBuffer)); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 878 | xmlFree(out); |
| 879 | return(written); |
| 880 | } |
| 881 | |
| 882 | /** |
| 883 | * xmlParserInputBufferCreateFilename: |
| 884 | * @URI: a C string containing the URI or filename |
| 885 | * @enc: the charset encoding if known |
| 886 | * |
| 887 | * Create a buffered parser input for the progressive parsing of a file |
| 888 | * If filename is "-' then we use stdin as the input. |
| 889 | * Automatic support for ZLIB/Compress compressed document is provided |
| 890 | * by default if found at compile-time. |
| 891 | * Do an encoding check if enc == XML_CHAR_ENCODING_NONE |
| 892 | * |
| 893 | * Returns the new parser input or NULL |
| 894 | */ |
| 895 | xmlParserInputBufferPtr |
| 896 | #ifdef VMS |
| 897 | xmlParserInputBufferCreateFname |
| 898 | #else |
| 899 | xmlParserInputBufferCreateFilename |
| 900 | #endif |
| 901 | (const char *URI, xmlCharEncoding enc) { |
| 902 | xmlParserInputBufferPtr ret; |
| 903 | int i; |
| 904 | void *context = NULL; |
| 905 | |
| 906 | if (xmlInputCallbackInitialized == 0) |
| 907 | xmlRegisterDefaultInputCallbacks(); |
| 908 | |
| 909 | if (URI == NULL) return(NULL); |
| 910 | |
| 911 | /* |
| 912 | * Try to find one of the input accept method accepting taht scheme |
| 913 | * Go in reverse to give precedence to user defined handlers. |
| 914 | */ |
| 915 | for (i = xmlInputCallbackNr - 1;i >= 0;i--) { |
| 916 | if ((xmlInputCallbackTable[i].matchcallback != NULL) && |
| 917 | (xmlInputCallbackTable[i].matchcallback(URI) != 0)) { |
| 918 | context = xmlInputCallbackTable[i].opencallback(URI); |
| 919 | if (context != NULL) |
| 920 | break; |
| 921 | } |
| 922 | } |
| 923 | if (context == NULL) { |
| 924 | return(NULL); |
| 925 | } |
| 926 | |
| 927 | /* |
| 928 | * Allocate the Input buffer front-end. |
| 929 | */ |
| 930 | ret = xmlAllocParserInputBuffer(enc); |
| 931 | if (ret != NULL) { |
| 932 | ret->context = context; |
| 933 | ret->readcallback = xmlInputCallbackTable[i].readcallback; |
| 934 | ret->closecallback = xmlInputCallbackTable[i].closecallback; |
| 935 | } |
| 936 | return(ret); |
| 937 | } |
| 938 | |
| 939 | /** |
| 940 | * xmlOutputBufferCreateFilename: |
| 941 | * @URI: a C string containing the URI or filename |
| 942 | * @encoder: the encoding converter or NULL |
| 943 | * @compression: the compression ration (0 none, 9 max). |
| 944 | * |
| 945 | * Create a buffered output for the progressive saving of a file |
| 946 | * If filename is "-' then we use stdout as the output. |
| 947 | * Automatic support for ZLIB/Compress compressed document is provided |
| 948 | * by default if found at compile-time. |
| 949 | * TODO: currently if compression is set, the library only support |
| 950 | * writing to a local file. |
| 951 | * |
| 952 | * Returns the new output or NULL |
| 953 | */ |
| 954 | xmlOutputBufferPtr |
| 955 | xmlOutputBufferCreateFilename(const char *URI, |
| 956 | xmlCharEncodingHandlerPtr encoder, |
| 957 | int compression) { |
| 958 | xmlOutputBufferPtr ret; |
| 959 | int i; |
| 960 | void *context = NULL; |
| 961 | |
| 962 | if (xmlOutputCallbackInitialized == 0) |
| 963 | xmlRegisterDefaultOutputCallbacks(); |
| 964 | |
| 965 | if (URI == NULL) return(NULL); |
| 966 | |
| 967 | #ifdef HAVE_ZLIB_H |
| 968 | if ((compression > 0) && (compression <= 9)) { |
| 969 | context = xmlGzfileOpenW(URI, compression); |
| 970 | if (context != NULL) { |
| 971 | ret = xmlAllocOutputBuffer(encoder); |
| 972 | if (ret != NULL) { |
| 973 | ret->context = context; |
| 974 | ret->writecallback = xmlGzfileWrite; |
| 975 | ret->closecallback = xmlGzfileClose; |
| 976 | } |
| 977 | return(ret); |
| 978 | } |
| 979 | } |
| 980 | #endif |
| 981 | |
| 982 | /* |
| 983 | * Try to find one of the output accept method accepting taht scheme |
| 984 | * Go in reverse to give precedence to user defined handlers. |
| 985 | */ |
| 986 | for (i = xmlOutputCallbackNr - 1;i >= 0;i--) { |
| 987 | if ((xmlOutputCallbackTable[i].matchcallback != NULL) && |
| 988 | (xmlOutputCallbackTable[i].matchcallback(URI) != 0)) { |
| 989 | context = xmlOutputCallbackTable[i].opencallback(URI); |
| 990 | if (context != NULL) |
| 991 | break; |
| 992 | } |
| 993 | } |
| 994 | if (context == NULL) { |
| 995 | return(NULL); |
| 996 | } |
| 997 | |
| 998 | /* |
| 999 | * Allocate the Output buffer front-end. |
| 1000 | */ |
| 1001 | ret = xmlAllocOutputBuffer(encoder); |
| 1002 | if (ret != NULL) { |
| 1003 | ret->context = context; |
| 1004 | ret->writecallback = xmlOutputCallbackTable[i].writecallback; |
| 1005 | ret->closecallback = xmlOutputCallbackTable[i].closecallback; |
| 1006 | } |
| 1007 | return(ret); |
| 1008 | } |
| 1009 | |
| 1010 | /** |
| 1011 | * xmlParserInputBufferCreateFile: |
| 1012 | * @file: a FILE* |
| 1013 | * @enc: the charset encoding if known |
| 1014 | * |
| 1015 | * Create a buffered parser input for the progressive parsing of a FILE * |
| 1016 | * buffered C I/O |
| 1017 | * |
| 1018 | * Returns the new parser input or NULL |
| 1019 | */ |
| 1020 | xmlParserInputBufferPtr |
| 1021 | xmlParserInputBufferCreateFile(FILE *file, xmlCharEncoding enc) { |
| 1022 | xmlParserInputBufferPtr ret; |
| 1023 | |
| 1024 | if (xmlInputCallbackInitialized == 0) |
| 1025 | xmlRegisterDefaultInputCallbacks(); |
| 1026 | |
| 1027 | if (file == NULL) return(NULL); |
| 1028 | |
| 1029 | ret = xmlAllocParserInputBuffer(enc); |
| 1030 | if (ret != NULL) { |
| 1031 | ret->context = file; |
| 1032 | ret->readcallback = xmlFileRead; |
| 1033 | ret->closecallback = xmlFileFlush; |
| 1034 | } |
| 1035 | |
| 1036 | return(ret); |
| 1037 | } |
| 1038 | |
| 1039 | /** |
| 1040 | * xmlOutputBufferCreateFile: |
| 1041 | * @file: a FILE* |
| 1042 | * @encoder: the encoding converter or NULL |
| 1043 | * |
| 1044 | * Create a buffered output for the progressive saving to a FILE * |
| 1045 | * buffered C I/O |
| 1046 | * |
| 1047 | * Returns the new parser output or NULL |
| 1048 | */ |
| 1049 | xmlOutputBufferPtr |
| 1050 | xmlOutputBufferCreateFile(FILE *file, xmlCharEncodingHandlerPtr encoder) { |
| 1051 | xmlOutputBufferPtr ret; |
| 1052 | |
| 1053 | if (xmlOutputCallbackInitialized == 0) |
| 1054 | xmlRegisterDefaultOutputCallbacks(); |
| 1055 | |
| 1056 | if (file == NULL) return(NULL); |
| 1057 | |
| 1058 | ret = xmlAllocOutputBuffer(encoder); |
| 1059 | if (ret != NULL) { |
| 1060 | ret->context = file; |
| 1061 | ret->writecallback = xmlFileWrite; |
| 1062 | ret->closecallback = xmlFileFlush; |
| 1063 | } |
| 1064 | |
| 1065 | return(ret); |
| 1066 | } |
| 1067 | |
| 1068 | /** |
| 1069 | * xmlParserInputBufferCreateFd: |
| 1070 | * @fd: a file descriptor number |
| 1071 | * @enc: the charset encoding if known |
| 1072 | * |
| 1073 | * Create a buffered parser input for the progressive parsing for the input |
| 1074 | * from a file descriptor |
| 1075 | * |
| 1076 | * Returns the new parser input or NULL |
| 1077 | */ |
| 1078 | xmlParserInputBufferPtr |
| 1079 | xmlParserInputBufferCreateFd(int fd, xmlCharEncoding enc) { |
| 1080 | xmlParserInputBufferPtr ret; |
| 1081 | |
| 1082 | if (fd < 0) return(NULL); |
| 1083 | |
| 1084 | ret = xmlAllocParserInputBuffer(enc); |
| 1085 | if (ret != NULL) { |
| 1086 | ret->context = (void *) fd; |
| 1087 | ret->readcallback = xmlFdRead; |
| 1088 | ret->closecallback = xmlFdClose; |
| 1089 | } |
| 1090 | |
| 1091 | return(ret); |
| 1092 | } |
| 1093 | |
| 1094 | /** |
| 1095 | * xmlParserInputBufferCreateMem: |
| 1096 | * @mem: the memory input |
| 1097 | * @size: the length of the memory block |
| 1098 | * @enc: the charset encoding if known |
| 1099 | * |
| 1100 | * Create a buffered parser input for the progressive parsing for the input |
| 1101 | * from a memory area. |
| 1102 | * |
| 1103 | * Returns the new parser input or NULL |
| 1104 | */ |
| 1105 | xmlParserInputBufferPtr |
| 1106 | xmlParserInputBufferCreateMem(const char *mem, int size, xmlCharEncoding enc) { |
| 1107 | xmlParserInputBufferPtr ret; |
| 1108 | |
| 1109 | if (size <= 0) return(NULL); |
| 1110 | if (mem == NULL) return(NULL); |
| 1111 | |
| 1112 | ret = xmlAllocParserInputBuffer(enc); |
| 1113 | if (ret != NULL) { |
| 1114 | ret->context = (void *) mem; |
| 1115 | ret->readcallback = (xmlInputReadCallback) xmlNop; |
| 1116 | ret->closecallback = NULL; |
| 1117 | xmlBufferAdd(ret->buffer, (const xmlChar *) mem, size); |
| 1118 | } |
| 1119 | |
| 1120 | return(ret); |
| 1121 | } |
| 1122 | |
| 1123 | /** |
| 1124 | * xmlOutputBufferCreateFd: |
| 1125 | * @fd: a file descriptor number |
| 1126 | * @encoder: the encoding converter or NULL |
| 1127 | * |
| 1128 | * Create a buffered output for the progressive saving |
| 1129 | * to a file descriptor |
| 1130 | * |
| 1131 | * Returns the new parser output or NULL |
| 1132 | */ |
| 1133 | xmlOutputBufferPtr |
| 1134 | xmlOutputBufferCreateFd(int fd, xmlCharEncodingHandlerPtr encoder) { |
| 1135 | xmlOutputBufferPtr ret; |
| 1136 | |
| 1137 | if (fd < 0) return(NULL); |
| 1138 | |
| 1139 | ret = xmlAllocOutputBuffer(encoder); |
| 1140 | if (ret != NULL) { |
| 1141 | ret->context = (void *) fd; |
| 1142 | ret->writecallback = xmlFdWrite; |
| 1143 | ret->closecallback = xmlFdClose; |
| 1144 | } |
| 1145 | |
| 1146 | return(ret); |
| 1147 | } |
| 1148 | |
| 1149 | /** |
| 1150 | * xmlParserInputBufferCreateIO: |
| 1151 | * @ioread: an I/O read function |
| 1152 | * @ioclose: an I/O close function |
| 1153 | * @ioctx: an I/O handler |
| 1154 | * @enc: the charset encoding if known |
| 1155 | * |
| 1156 | * Create a buffered parser input for the progressive parsing for the input |
| 1157 | * from an I/O handler |
| 1158 | * |
| 1159 | * Returns the new parser input or NULL |
| 1160 | */ |
| 1161 | xmlParserInputBufferPtr |
| 1162 | xmlParserInputBufferCreateIO(xmlInputReadCallback ioread, |
| 1163 | xmlInputCloseCallback ioclose, void *ioctx, xmlCharEncoding enc) { |
| 1164 | xmlParserInputBufferPtr ret; |
| 1165 | |
| 1166 | if (ioread == NULL) return(NULL); |
| 1167 | |
| 1168 | ret = xmlAllocParserInputBuffer(enc); |
| 1169 | if (ret != NULL) { |
| 1170 | ret->context = (void *) ioctx; |
| 1171 | ret->readcallback = ioread; |
| 1172 | ret->closecallback = ioclose; |
| 1173 | } |
| 1174 | |
| 1175 | return(ret); |
| 1176 | } |
| 1177 | |
| 1178 | /** |
| 1179 | * xmlOutputBufferCreateIO: |
| 1180 | * @iowrite: an I/O write function |
| 1181 | * @ioclose: an I/O close function |
| 1182 | * @ioctx: an I/O handler |
| 1183 | * @enc: the charset encoding if known |
| 1184 | * |
| 1185 | * Create a buffered output for the progressive saving |
| 1186 | * to an I/O handler |
| 1187 | * |
| 1188 | * Returns the new parser output or NULL |
| 1189 | */ |
| 1190 | xmlOutputBufferPtr |
| 1191 | xmlOutputBufferCreateIO(xmlOutputWriteCallback iowrite, |
| 1192 | xmlOutputCloseCallback ioclose, void *ioctx, |
| 1193 | xmlCharEncodingHandlerPtr encoder) { |
| 1194 | xmlOutputBufferPtr ret; |
| 1195 | |
| 1196 | if (iowrite == NULL) return(NULL); |
| 1197 | |
| 1198 | ret = xmlAllocOutputBuffer(encoder); |
| 1199 | if (ret != NULL) { |
| 1200 | ret->context = (void *) ioctx; |
| 1201 | ret->writecallback = iowrite; |
| 1202 | ret->closecallback = ioclose; |
| 1203 | } |
| 1204 | |
| 1205 | return(ret); |
| 1206 | } |
| 1207 | |
| 1208 | /** |
| 1209 | * xmlParserInputBufferPush: |
| 1210 | * @in: a buffered parser input |
| 1211 | * @len: the size in bytes of the array. |
| 1212 | * @buf: an char array |
| 1213 | * |
| 1214 | * Push the content of the arry in the input buffer |
| 1215 | * This routine handle the I18N transcoding to internal UTF-8 |
| 1216 | * This is used when operating the parser in progressive (push) mode. |
| 1217 | * |
| 1218 | * Returns the number of chars read and stored in the buffer, or -1 |
| 1219 | * in case of error. |
| 1220 | */ |
| 1221 | int |
| 1222 | xmlParserInputBufferPush(xmlParserInputBufferPtr in, |
| 1223 | int len, const char *buf) { |
| 1224 | int nbchars = 0; |
| 1225 | |
| 1226 | if (len < 0) return(0); |
| 1227 | if (in->encoder != NULL) { |
| 1228 | /* |
| 1229 | * Store the data in the incoming raw buffer |
| 1230 | */ |
| 1231 | if (in->raw == NULL) { |
| 1232 | in->raw = xmlBufferCreate(); |
| 1233 | } |
| 1234 | xmlBufferAdd(in->raw, (const xmlChar *) buf, len); |
| 1235 | |
| 1236 | /* |
| 1237 | * convert as much as possible to the parser reading buffer. |
| 1238 | */ |
| 1239 | nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw); |
| 1240 | if (nbchars < 0) { |
| 1241 | xmlGenericError(xmlGenericErrorContext, |
| 1242 | "xmlParserInputBufferPush: encoder error\n"); |
| 1243 | return(-1); |
| 1244 | } |
| 1245 | } else { |
| 1246 | nbchars = len; |
| 1247 | xmlBufferAdd(in->buffer, (xmlChar *) buf, nbchars); |
| 1248 | } |
| 1249 | #ifdef DEBUG_INPUT |
| 1250 | xmlGenericError(xmlGenericErrorContext, |
| 1251 | "I/O: pushed %d chars, buffer %d/%d\n", |
| 1252 | nbchars, in->buffer->use, in->buffer->size); |
| 1253 | #endif |
| 1254 | return(nbchars); |
| 1255 | } |
| 1256 | |
| 1257 | /** |
| 1258 | * xmlParserInputBufferGrow: |
| 1259 | * @in: a buffered parser input |
| 1260 | * @len: indicative value of the amount of chars to read |
| 1261 | * |
| 1262 | * Grow up the content of the input buffer, the old data are preserved |
| 1263 | * This routine handle the I18N transcoding to internal UTF-8 |
| 1264 | * This routine is used when operating the parser in normal (pull) mode |
| 1265 | * |
| 1266 | * TODO: one should be able to remove one extra copy by copying directy |
| 1267 | * onto in->buffer or in->raw |
| 1268 | * |
| 1269 | * Returns the number of chars read and stored in the buffer, or -1 |
| 1270 | * in case of error. |
| 1271 | */ |
| 1272 | int |
| 1273 | xmlParserInputBufferGrow(xmlParserInputBufferPtr in, int len) { |
| 1274 | char *buffer = NULL; |
| 1275 | int res = 0; |
| 1276 | int nbchars = 0; |
| 1277 | int buffree; |
| 1278 | |
| 1279 | if ((len <= MINLEN) && (len != 4)) |
| 1280 | len = MINLEN; |
| 1281 | buffree = in->buffer->size - in->buffer->use; |
| 1282 | if (buffree <= 0) { |
| 1283 | xmlGenericError(xmlGenericErrorContext, |
| 1284 | "xmlParserInputBufferGrow : buffer full !\n"); |
| 1285 | return(0); |
| 1286 | } |
| 1287 | if (len > buffree) |
| 1288 | len = buffree; |
| 1289 | |
| 1290 | buffer = (char *) xmlMalloc((len + 1) * sizeof(char)); |
| 1291 | if (buffer == NULL) { |
| 1292 | xmlGenericError(xmlGenericErrorContext, |
| 1293 | "xmlParserInputBufferGrow : out of memory !\n"); |
| 1294 | return(-1); |
| 1295 | } |
| 1296 | |
| 1297 | /* |
| 1298 | * Call the read method for this I/O type. |
| 1299 | */ |
| 1300 | if (in->readcallback != NULL) { |
| 1301 | res = in->readcallback(in->context, &buffer[0], len); |
| 1302 | } else { |
| 1303 | xmlGenericError(xmlGenericErrorContext, |
| 1304 | "xmlParserInputBufferGrow : no input !\n"); |
| 1305 | xmlFree(buffer); |
| 1306 | return(-1); |
| 1307 | } |
| 1308 | if (res < 0) { |
| 1309 | perror ("read error"); |
| 1310 | xmlFree(buffer); |
| 1311 | return(-1); |
| 1312 | } |
| 1313 | len = res; |
| 1314 | if (in->encoder != NULL) { |
| 1315 | /* |
| 1316 | * Store the data in the incoming raw buffer |
| 1317 | */ |
| 1318 | if (in->raw == NULL) { |
| 1319 | in->raw = xmlBufferCreate(); |
| 1320 | } |
| 1321 | xmlBufferAdd(in->raw, (const xmlChar *) buffer, len); |
| 1322 | |
| 1323 | /* |
| 1324 | * convert as much as possible to the parser reading buffer. |
| 1325 | */ |
| 1326 | nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw); |
| 1327 | if (nbchars < 0) { |
| 1328 | xmlGenericError(xmlGenericErrorContext, |
| 1329 | "xmlParserInputBufferGrow: encoder error\n"); |
| 1330 | return(-1); |
| 1331 | } |
| 1332 | } else { |
| 1333 | nbchars = len; |
| 1334 | buffer[nbchars] = 0; |
| 1335 | xmlBufferAdd(in->buffer, (xmlChar *) buffer, nbchars); |
| 1336 | } |
| 1337 | #ifdef DEBUG_INPUT |
| 1338 | xmlGenericError(xmlGenericErrorContext, |
| 1339 | "I/O: read %d chars, buffer %d/%d\n", |
| 1340 | nbchars, in->buffer->use, in->buffer->size); |
| 1341 | #endif |
| 1342 | xmlFree(buffer); |
| 1343 | return(nbchars); |
| 1344 | } |
| 1345 | |
| 1346 | /** |
| 1347 | * xmlParserInputBufferRead: |
| 1348 | * @in: a buffered parser input |
| 1349 | * @len: indicative value of the amount of chars to read |
| 1350 | * |
| 1351 | * Refresh the content of the input buffer, the old data are considered |
| 1352 | * consumed |
| 1353 | * This routine handle the I18N transcoding to internal UTF-8 |
| 1354 | * |
| 1355 | * Returns the number of chars read and stored in the buffer, or -1 |
| 1356 | * in case of error. |
| 1357 | */ |
| 1358 | int |
| 1359 | xmlParserInputBufferRead(xmlParserInputBufferPtr in, int len) { |
| 1360 | /* xmlBufferEmpty(in->buffer); */ |
| 1361 | if (in->readcallback != NULL) |
| 1362 | return(xmlParserInputBufferGrow(in, len)); |
| 1363 | else |
| 1364 | return(-1); |
| 1365 | } |
| 1366 | |
| 1367 | /** |
| 1368 | * xmlOutputBufferWrite: |
| 1369 | * @out: a buffered parser output |
| 1370 | * @len: the size in bytes of the array. |
| 1371 | * @buf: an char array |
| 1372 | * |
| 1373 | * Write the content of the array in the output I/O buffer |
| 1374 | * This routine handle the I18N transcoding from internal UTF-8 |
| 1375 | * The buffer is lossless, i.e. will store in case of partial |
| 1376 | * or delayed writes. |
| 1377 | * |
| 1378 | * Returns the number of chars immediately written, or -1 |
| 1379 | * in case of error. |
| 1380 | */ |
| 1381 | int |
| 1382 | xmlOutputBufferWrite(xmlOutputBufferPtr out, int len, const char *buf) { |
| 1383 | int nbchars = 0; /* number of chars to output to I/O */ |
| 1384 | int ret; /* return from function call */ |
| 1385 | int written = 0; /* number of char written to I/O so far */ |
| 1386 | int chunk; /* number of byte curreent processed from buf */ |
| 1387 | |
| 1388 | if (len < 0) return(0); |
| 1389 | |
| 1390 | do { |
| 1391 | chunk = len; |
| 1392 | if (chunk > 4 * MINLEN) |
| 1393 | chunk = 4 * MINLEN; |
| 1394 | |
| 1395 | /* |
| 1396 | * first handle encoding stuff. |
| 1397 | */ |
| 1398 | if (out->encoder != NULL) { |
| 1399 | /* |
| 1400 | * Store the data in the incoming raw buffer |
| 1401 | */ |
| 1402 | if (out->conv == NULL) { |
| 1403 | out->conv = xmlBufferCreate(); |
| 1404 | } |
| 1405 | xmlBufferAdd(out->buffer, (const xmlChar *) buf, chunk); |
| 1406 | |
| 1407 | if ((out->buffer->use < MINLEN) && (chunk == len)) |
| 1408 | goto done; |
| 1409 | |
| 1410 | /* |
| 1411 | * convert as much as possible to the parser reading buffer. |
| 1412 | */ |
| 1413 | ret = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
| 1414 | if (ret < 0) { |
| 1415 | xmlGenericError(xmlGenericErrorContext, |
| 1416 | "xmlOutputBufferWrite: encoder error\n"); |
| 1417 | return(-1); |
| 1418 | } |
| 1419 | nbchars = out->conv->use; |
| 1420 | } else { |
| 1421 | xmlBufferAdd(out->buffer, (const xmlChar *) buf, chunk); |
| 1422 | nbchars = out->buffer->use; |
| 1423 | } |
| 1424 | buf += chunk; |
| 1425 | len -= chunk; |
| 1426 | |
| 1427 | if ((nbchars < MINLEN) && (len <= 0)) |
| 1428 | goto done; |
| 1429 | |
| 1430 | if (out->writecallback) { |
| 1431 | /* |
| 1432 | * second write the stuff to the I/O channel |
| 1433 | */ |
| 1434 | if (out->encoder != NULL) { |
| 1435 | ret = out->writecallback(out->context, |
| 1436 | (const char *)out->conv->content, nbchars); |
| 1437 | if (ret >= 0) |
| 1438 | xmlBufferShrink(out->conv, nbchars); |
| 1439 | } else { |
| 1440 | ret = out->writecallback(out->context, |
| 1441 | (const char *)out->buffer->content, nbchars); |
| 1442 | if (ret >= 0) |
| 1443 | xmlBufferShrink(out->buffer, nbchars); |
| 1444 | } |
| 1445 | if (ret < 0) { |
| 1446 | xmlGenericError(xmlGenericErrorContext, |
| 1447 | "I/O: error %d writing %d bytes\n", ret, nbchars); |
| 1448 | return(ret); |
| 1449 | } |
| 1450 | out->written += ret; |
| 1451 | } |
| 1452 | written += nbchars; |
| 1453 | } while (len > 0); |
| 1454 | |
| 1455 | done: |
| 1456 | #ifdef DEBUG_INPUT |
| 1457 | xmlGenericError(xmlGenericErrorContext, |
| 1458 | "I/O: wrote %d chars\n", written); |
| 1459 | #endif |
| 1460 | return(written); |
| 1461 | } |
| 1462 | |
| 1463 | /** |
| 1464 | * xmlOutputBufferWriteString: |
| 1465 | * @out: a buffered parser output |
| 1466 | * @str: a zero terminated C string |
| 1467 | * |
| 1468 | * Write the content of the string in the output I/O buffer |
| 1469 | * This routine handle the I18N transcoding from internal UTF-8 |
| 1470 | * The buffer is lossless, i.e. will store in case of partial |
| 1471 | * or delayed writes. |
| 1472 | * |
| 1473 | * Returns the number of chars immediately written, or -1 |
| 1474 | * in case of error. |
| 1475 | */ |
| 1476 | int |
| 1477 | xmlOutputBufferWriteString(xmlOutputBufferPtr out, const char *str) { |
| 1478 | int len; |
| 1479 | |
| 1480 | if (str == NULL) |
| 1481 | return(-1); |
| 1482 | len = strlen(str); |
| 1483 | |
| 1484 | if (len > 0) |
| 1485 | return(xmlOutputBufferWrite(out, len, str)); |
| 1486 | return(len); |
| 1487 | } |
| 1488 | |
| 1489 | /** |
| 1490 | * xmlOutputBufferFlush: |
| 1491 | * @out: a buffered output |
| 1492 | * |
| 1493 | * flushes the output I/O channel |
| 1494 | * |
| 1495 | * Returns the number of byte written or -1 in case of error. |
| 1496 | */ |
| 1497 | int |
| 1498 | xmlOutputBufferFlush(xmlOutputBufferPtr out) { |
| 1499 | int nbchars = 0, ret = 0; |
| 1500 | |
| 1501 | /* |
| 1502 | * first handle encoding stuff. |
| 1503 | */ |
| 1504 | if ((out->conv != NULL) && (out->encoder != NULL)) { |
| 1505 | /* |
| 1506 | * convert as much as possible to the parser reading buffer. |
| 1507 | */ |
| 1508 | nbchars = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
| 1509 | if (nbchars < 0) { |
| 1510 | xmlGenericError(xmlGenericErrorContext, |
| 1511 | "xmlOutputBufferWrite: encoder error\n"); |
| 1512 | return(-1); |
| 1513 | } |
| 1514 | } |
| 1515 | |
| 1516 | /* |
| 1517 | * second flush the stuff to the I/O channel |
| 1518 | */ |
| 1519 | if ((out->conv != NULL) && (out->encoder != NULL) && |
| 1520 | (out->writecallback != NULL)) { |
| 1521 | ret = out->writecallback(out->context, |
| 1522 | (const char *)out->conv->content, out->conv->use); |
| 1523 | if (ret >= 0) |
| 1524 | xmlBufferShrink(out->conv, ret); |
| 1525 | } else if (out->writecallback != NULL) { |
| 1526 | ret = out->writecallback(out->context, |
| 1527 | (const char *)out->buffer->content, out->buffer->use); |
| 1528 | if (ret >= 0) |
| 1529 | xmlBufferShrink(out->buffer, ret); |
| 1530 | } |
| 1531 | if (ret < 0) { |
| 1532 | xmlGenericError(xmlGenericErrorContext, |
| 1533 | "I/O: error %d flushing %d bytes\n", ret, nbchars); |
| 1534 | return(ret); |
| 1535 | } |
| 1536 | out->written += ret; |
| 1537 | |
| 1538 | #ifdef DEBUG_INPUT |
| 1539 | xmlGenericError(xmlGenericErrorContext, |
| 1540 | "I/O: flushed %d chars\n", ret); |
| 1541 | #endif |
| 1542 | return(ret); |
| 1543 | } |
| 1544 | |
| 1545 | /* |
| 1546 | * xmlParserGetDirectory: |
| 1547 | * @filename: the path to a file |
| 1548 | * |
| 1549 | * lookup the directory for that file |
| 1550 | * |
| 1551 | * Returns a new allocated string containing the directory, or NULL. |
| 1552 | */ |
| 1553 | char * |
| 1554 | xmlParserGetDirectory(const char *filename) { |
| 1555 | char *ret = NULL; |
| 1556 | char dir[1024]; |
| 1557 | char *cur; |
| 1558 | char sep = '/'; |
| 1559 | |
| 1560 | if (xmlInputCallbackInitialized == 0) |
| 1561 | xmlRegisterDefaultInputCallbacks(); |
| 1562 | |
| 1563 | if (filename == NULL) return(NULL); |
| 1564 | #ifdef WIN32 |
| 1565 | sep = '\\'; |
| 1566 | #endif |
| 1567 | |
| 1568 | strncpy(dir, filename, 1023); |
| 1569 | dir[1023] = 0; |
| 1570 | cur = &dir[strlen(dir)]; |
| 1571 | while (cur > dir) { |
| 1572 | if (*cur == sep) break; |
| 1573 | cur --; |
| 1574 | } |
| 1575 | if (*cur == sep) { |
| 1576 | if (cur == dir) dir[1] = 0; |
| 1577 | else *cur = 0; |
| 1578 | ret = xmlMemStrdup(dir); |
| 1579 | } else { |
| 1580 | if (getcwd(dir, 1024) != NULL) { |
| 1581 | dir[1023] = 0; |
| 1582 | ret = xmlMemStrdup(dir); |
| 1583 | } |
| 1584 | } |
| 1585 | return(ret); |
| 1586 | } |
| 1587 | |
| 1588 | /**************************************************************** |
| 1589 | * * |
| 1590 | * External entities loading * |
| 1591 | * * |
| 1592 | ****************************************************************/ |
| 1593 | |
| 1594 | /* |
| 1595 | * xmlDefaultExternalEntityLoader: |
| 1596 | * @URL: the URL for the entity to load |
| 1597 | * @ID: the System ID for the entity to load |
| 1598 | * @ctxt: the context in which the entity is called or NULL |
| 1599 | * |
| 1600 | * By default we don't load external entitites, yet. |
| 1601 | * |
| 1602 | * Returns a new allocated xmlParserInputPtr, or NULL. |
| 1603 | */ |
| 1604 | static |
| 1605 | xmlParserInputPtr |
| 1606 | xmlDefaultExternalEntityLoader(const char *URL, const char *ID, |
| 1607 | xmlParserCtxtPtr ctxt) { |
| 1608 | xmlParserInputPtr ret = NULL; |
| 1609 | |
| 1610 | #ifdef DEBUG_EXTERNAL_ENTITIES |
| 1611 | xmlGenericError(xmlGenericErrorContext, |
| 1612 | "xmlDefaultExternalEntityLoader(%s, xxx)\n", URL); |
| 1613 | #endif |
| 1614 | if (URL == NULL) { |
| 1615 | if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL)) |
| 1616 | ctxt->sax->warning(ctxt, |
| 1617 | "failed to load external entity \"%s\"\n", ID); |
| 1618 | return(NULL); |
| 1619 | } |
| 1620 | ret = xmlNewInputFromFile(ctxt, URL); |
| 1621 | if (ret == NULL) { |
| 1622 | if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL)) |
| 1623 | ctxt->sax->warning(ctxt, |
| 1624 | "failed to load external entity \"%s\"\n", URL); |
| 1625 | } |
| 1626 | return(ret); |
| 1627 | } |
| 1628 | |
| 1629 | static xmlExternalEntityLoader xmlCurrentExternalEntityLoader = |
| 1630 | xmlDefaultExternalEntityLoader; |
| 1631 | |
| 1632 | /* |
| 1633 | * xmlSetExternalEntityLoader: |
| 1634 | * @f: the new entity resolver function |
| 1635 | * |
| 1636 | * Changes the defaultexternal entity resolver function for the application |
| 1637 | */ |
| 1638 | void |
| 1639 | xmlSetExternalEntityLoader(xmlExternalEntityLoader f) { |
| 1640 | xmlCurrentExternalEntityLoader = f; |
| 1641 | } |
| 1642 | |
| 1643 | /* |
| 1644 | * xmlGetExternalEntityLoader: |
| 1645 | * |
| 1646 | * Get the default external entity resolver function for the application |
| 1647 | * |
| 1648 | * Returns the xmlExternalEntityLoader function pointer |
| 1649 | */ |
| 1650 | xmlExternalEntityLoader |
| 1651 | xmlGetExternalEntityLoader(void) { |
| 1652 | return(xmlCurrentExternalEntityLoader); |
| 1653 | } |
| 1654 | |
| 1655 | /* |
| 1656 | * xmlLoadExternalEntity: |
| 1657 | * @URL: the URL for the entity to load |
| 1658 | * @ID: the System ID for the entity to load |
| 1659 | * @ctxt: the context in which the entity is called or NULL |
| 1660 | * |
| 1661 | * Load an external entity, note that the use of this function for |
| 1662 | * unparsed entities may generate problems |
| 1663 | * TODO: a more generic External entitiy API must be designed |
| 1664 | * |
| 1665 | * Returns the xmlParserInputPtr or NULL |
| 1666 | */ |
| 1667 | xmlParserInputPtr |
| 1668 | xmlLoadExternalEntity(const char *URL, const char *ID, |
| 1669 | xmlParserCtxtPtr ctxt) { |
| 1670 | return(xmlCurrentExternalEntityLoader(URL, ID, ctxt)); |
| 1671 | } |
| 1672 | |