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 | * * |
| 123 | * Standard I/O for file accesses * |
| 124 | * * |
| 125 | ************************************************************************/ |
| 126 | |
| 127 | /** |
| 128 | * xmlCheckFilename |
| 129 | * @path: the path to check |
| 130 | * |
| 131 | * function checks to see if @path is a valid source |
| 132 | * (file, socket...) for XML. |
| 133 | * |
| 134 | * if stat is not available on the target machine, |
| 135 | * returns 1. if stat fails, returns 0 (if calling |
| 136 | * stat on the filename fails, it can't be right). |
| 137 | * if stat succeeds and the file is a directory, |
| 138 | * sets errno to EISDIR and returns 0. otherwise |
| 139 | * returns 1. |
| 140 | */ |
| 141 | |
| 142 | static int |
| 143 | xmlCheckFilename (const char *path) |
| 144 | { |
| 145 | #ifdef HAVE_STAT |
| 146 | #ifdef S_ISDIR |
| 147 | struct stat stat_buffer; |
| 148 | |
| 149 | if (stat(path, &stat_buffer) == -1) |
| 150 | return 0; |
| 151 | |
| 152 | if (S_ISDIR(stat_buffer.st_mode)) { |
| 153 | errno = EISDIR; |
| 154 | return 0; |
| 155 | } |
| 156 | |
| 157 | #endif |
| 158 | #endif |
| 159 | return 1; |
| 160 | } |
| 161 | |
| 162 | int |
| 163 | xmlNop(void) { |
| 164 | return(0); |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * xmlFdMatch: |
| 169 | * @filename: the URI for matching |
| 170 | * |
| 171 | * input from file descriptor |
| 172 | * |
| 173 | * Returns 1 if matches, 0 otherwise |
| 174 | */ |
| 175 | int |
| 176 | xmlFdMatch (const char *filename) { |
| 177 | return(1); |
| 178 | } |
| 179 | |
| 180 | /** |
| 181 | * xmlFdOpen: |
| 182 | * @filename: the URI for matching |
| 183 | * |
| 184 | * input from file descriptor, supports compressed input |
Daniel Veillard | a022fe0 | 2001-03-14 16:30:00 +0000 | [diff] [blame^] | 185 | * if @filename is "-" then the standard input is used |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 186 | * |
| 187 | * Returns an I/O context or NULL in case of error |
| 188 | */ |
| 189 | void * |
| 190 | xmlFdOpen (const char *filename) { |
| 191 | const char *path = NULL; |
| 192 | int fd; |
| 193 | |
| 194 | if (!strcmp(filename, "-")) { |
| 195 | fd = 0; |
| 196 | return((void *) fd); |
| 197 | } |
| 198 | |
| 199 | if (!strncmp(filename, "file://localhost", 16)) |
| 200 | path = &filename[16]; |
| 201 | else if (!strncmp(filename, "file:///", 8)) |
| 202 | path = &filename[8]; |
| 203 | else if (filename[0] == '/') |
| 204 | path = filename; |
| 205 | if (path == NULL) |
| 206 | return(NULL); |
| 207 | |
| 208 | #ifdef WIN32 |
| 209 | fd = _open (path, O_RDONLY | _O_BINARY); |
| 210 | #else |
| 211 | fd = open (path, O_RDONLY); |
| 212 | #endif |
| 213 | |
| 214 | return((void *) fd); |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * xmlFdOpenW: |
| 219 | * @filename: the URI for matching |
| 220 | * |
| 221 | * input from file descriptor, |
| 222 | * if @filename is "-" then the standard output is used |
| 223 | * |
| 224 | * Returns an I/O context or NULL in case of error |
| 225 | */ |
| 226 | void * |
| 227 | xmlFdOpenW (const char *filename) { |
| 228 | const char *path = NULL; |
| 229 | int fd; |
| 230 | |
| 231 | if (!strcmp(filename, "-")) { |
| 232 | fd = 1; |
| 233 | return((void *) fd); |
| 234 | } |
| 235 | |
| 236 | if (!strncmp(filename, "file://localhost", 16)) |
| 237 | path = &filename[16]; |
| 238 | else if (!strncmp(filename, "file:///", 8)) |
| 239 | path = &filename[8]; |
| 240 | else if (filename[0] == '/') |
| 241 | path = filename; |
| 242 | if (path == NULL) |
| 243 | return(NULL); |
| 244 | |
| 245 | fd = open (path, O_WRONLY); |
| 246 | |
| 247 | return((void *) fd); |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * xmlFdRead: |
| 252 | * @context: the I/O context |
| 253 | * @buffer: where to drop data |
| 254 | * @len: number of bytes to read |
| 255 | * |
| 256 | * Read @len bytes to @buffer from the I/O channel. |
| 257 | * |
| 258 | * Returns the number of bytes written |
| 259 | */ |
| 260 | int |
| 261 | xmlFdRead (void * context, char * buffer, int len) { |
| 262 | return(read((int) context, &buffer[0], len)); |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * xmlFdWrite: |
| 267 | * @context: the I/O context |
| 268 | * @buffer: where to get data |
| 269 | * @len: number of bytes to write |
| 270 | * |
| 271 | * Write @len bytes from @buffer to the I/O channel. |
| 272 | * |
| 273 | * Returns the number of bytes written |
| 274 | */ |
| 275 | int |
| 276 | xmlFdWrite (void * context, const char * buffer, int len) { |
| 277 | return(write((int) context, &buffer[0], len)); |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * xmlFdClose: |
| 282 | * @context: the I/O context |
| 283 | * |
| 284 | * Close an I/O channel |
| 285 | */ |
| 286 | void |
| 287 | xmlFdClose (void * context) { |
| 288 | close((int) context); |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | * xmlFileMatch: |
| 293 | * @filename: the URI for matching |
| 294 | * |
| 295 | * input from FILE * |
| 296 | * |
| 297 | * Returns 1 if matches, 0 otherwise |
| 298 | */ |
| 299 | int |
| 300 | xmlFileMatch (const char *filename) { |
| 301 | return(1); |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * xmlFileOpen: |
| 306 | * @filename: the URI for matching |
| 307 | * |
| 308 | * input from FILE *, supports compressed input |
| 309 | * if @filename is " " then the standard input is used |
| 310 | * |
| 311 | * Returns an I/O context or NULL in case of error |
| 312 | */ |
| 313 | void * |
| 314 | xmlFileOpen (const char *filename) { |
| 315 | const char *path = NULL; |
| 316 | FILE *fd; |
| 317 | |
| 318 | if (!strcmp(filename, "-")) { |
| 319 | fd = stdin; |
| 320 | return((void *) fd); |
| 321 | } |
| 322 | |
| 323 | if (!strncmp(filename, "file://localhost", 16)) |
| 324 | path = &filename[16]; |
| 325 | else if (!strncmp(filename, "file:///", 8)) |
| 326 | path = &filename[8]; |
| 327 | else |
| 328 | path = filename; |
| 329 | |
| 330 | if (path == NULL) |
| 331 | return(NULL); |
| 332 | if (!xmlCheckFilename(path)) |
| 333 | return(NULL); |
| 334 | |
| 335 | #ifdef WIN32 |
| 336 | fd = fopen(path, "rb"); |
| 337 | #else |
| 338 | fd = fopen(path, "r"); |
| 339 | #endif /* WIN32 */ |
| 340 | return((void *) fd); |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * xmlFileOpenW: |
| 345 | * @filename: the URI for matching |
| 346 | * |
| 347 | * output to from FILE *, |
| 348 | * if @filename is "-" then the standard output is used |
| 349 | * |
| 350 | * Returns an I/O context or NULL in case of error |
| 351 | */ |
| 352 | void * |
| 353 | xmlFileOpenW (const char *filename) { |
| 354 | const char *path = NULL; |
| 355 | FILE *fd; |
| 356 | |
| 357 | if (!strcmp(filename, "-")) { |
| 358 | fd = stdout; |
| 359 | return((void *) fd); |
| 360 | } |
| 361 | |
| 362 | if (!strncmp(filename, "file://localhost", 16)) |
| 363 | path = &filename[16]; |
| 364 | else if (!strncmp(filename, "file:///", 8)) |
| 365 | path = &filename[8]; |
| 366 | else |
| 367 | path = filename; |
| 368 | |
| 369 | if (path == NULL) |
| 370 | return(NULL); |
| 371 | |
| 372 | fd = fopen(path, "w"); |
| 373 | return((void *) fd); |
| 374 | } |
| 375 | |
| 376 | /** |
| 377 | * xmlFileRead: |
| 378 | * @context: the I/O context |
| 379 | * @buffer: where to drop data |
| 380 | * @len: number of bytes to write |
| 381 | * |
| 382 | * Read @len bytes to @buffer from the I/O channel. |
| 383 | * |
| 384 | * Returns the number of bytes written |
| 385 | */ |
| 386 | int |
| 387 | xmlFileRead (void * context, char * buffer, int len) { |
| 388 | return(fread(&buffer[0], 1, len, (FILE *) context)); |
| 389 | } |
| 390 | |
| 391 | /** |
| 392 | * xmlFileWrite: |
| 393 | * @context: the I/O context |
| 394 | * @buffer: where to drop data |
| 395 | * @len: number of bytes to write |
| 396 | * |
| 397 | * Write @len bytes from @buffer to the I/O channel. |
| 398 | * |
| 399 | * Returns the number of bytes written |
| 400 | */ |
| 401 | int |
| 402 | xmlFileWrite (void * context, const char * buffer, int len) { |
| 403 | return(fwrite(&buffer[0], 1, len, (FILE *) context)); |
| 404 | } |
| 405 | |
| 406 | /** |
| 407 | * xmlFileClose: |
| 408 | * @context: the I/O context |
| 409 | * |
| 410 | * Close an I/O channel |
| 411 | */ |
| 412 | void |
| 413 | xmlFileClose (void * context) { |
| 414 | fclose((FILE *) context); |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * xmlFileFlush: |
| 419 | * @context: the I/O context |
| 420 | * |
| 421 | * Flush an I/O channel |
| 422 | */ |
| 423 | void |
| 424 | xmlFileFlush (void * context) { |
| 425 | fflush((FILE *) context); |
| 426 | } |
| 427 | |
| 428 | #ifdef HAVE_ZLIB_H |
| 429 | /************************************************************************ |
| 430 | * * |
| 431 | * I/O for compressed file accesses * |
| 432 | * * |
| 433 | ************************************************************************/ |
| 434 | /** |
| 435 | * xmlGzfileMatch: |
| 436 | * @filename: the URI for matching |
| 437 | * |
| 438 | * input from compressed file test |
| 439 | * |
| 440 | * Returns 1 if matches, 0 otherwise |
| 441 | */ |
| 442 | int |
| 443 | xmlGzfileMatch (const char *filename) { |
| 444 | return(1); |
| 445 | } |
| 446 | |
| 447 | /** |
| 448 | * xmlGzfileOpen: |
| 449 | * @filename: the URI for matching |
| 450 | * |
| 451 | * input from compressed file open |
| 452 | * if @filename is " " then the standard input is used |
| 453 | * |
| 454 | * Returns an I/O context or NULL in case of error |
| 455 | */ |
| 456 | void * |
| 457 | xmlGzfileOpen (const char *filename) { |
| 458 | const char *path = NULL; |
| 459 | gzFile fd; |
| 460 | |
| 461 | if (!strcmp(filename, "-")) { |
| 462 | fd = gzdopen(fileno(stdin), "rb"); |
| 463 | return((void *) fd); |
| 464 | } |
| 465 | |
| 466 | if (!strncmp(filename, "file://localhost", 16)) |
| 467 | path = &filename[16]; |
| 468 | else if (!strncmp(filename, "file:///", 8)) |
| 469 | path = &filename[7]; |
| 470 | else |
| 471 | path = filename; |
| 472 | |
| 473 | if (path == NULL) |
| 474 | return(NULL); |
| 475 | if (!xmlCheckFilename(path)) |
| 476 | return(NULL); |
| 477 | |
| 478 | fd = gzopen(path, "rb"); |
| 479 | return((void *) fd); |
| 480 | } |
| 481 | |
| 482 | /** |
| 483 | * xmlGzfileOpenW: |
| 484 | * @filename: the URI for matching |
| 485 | * @compression: the compression factor (0 - 9 included) |
| 486 | * |
| 487 | * input from compressed file open |
| 488 | * if @filename is " " then the standard input is used |
| 489 | * |
| 490 | * Returns an I/O context or NULL in case of error |
| 491 | */ |
| 492 | void * |
| 493 | xmlGzfileOpenW (const char *filename, int compression) { |
| 494 | const char *path = NULL; |
| 495 | char mode[15]; |
| 496 | gzFile fd; |
| 497 | |
| 498 | sprintf(mode, "wb%d", compression); |
| 499 | if (!strcmp(filename, "-")) { |
| 500 | fd = gzdopen(1, mode); |
| 501 | return((void *) fd); |
| 502 | } |
| 503 | |
| 504 | if (!strncmp(filename, "file://localhost", 16)) |
| 505 | path = &filename[16]; |
| 506 | else if (!strncmp(filename, "file:///", 8)) |
| 507 | path = &filename[8]; |
| 508 | else |
| 509 | path = filename; |
| 510 | |
| 511 | if (path == NULL) |
| 512 | return(NULL); |
| 513 | |
| 514 | fd = gzopen(path, mode); |
| 515 | return((void *) fd); |
| 516 | } |
| 517 | |
| 518 | /** |
| 519 | * xmlGzfileRead: |
| 520 | * @context: the I/O context |
| 521 | * @buffer: where to drop data |
| 522 | * @len: number of bytes to write |
| 523 | * |
| 524 | * Read @len bytes to @buffer from the compressed I/O channel. |
| 525 | * |
| 526 | * Returns the number of bytes written |
| 527 | */ |
| 528 | int |
| 529 | xmlGzfileRead (void * context, char * buffer, int len) { |
| 530 | return(gzread((gzFile) context, &buffer[0], len)); |
| 531 | } |
| 532 | |
| 533 | /** |
| 534 | * xmlGzfileWrite: |
| 535 | * @context: the I/O context |
| 536 | * @buffer: where to drop data |
| 537 | * @len: number of bytes to write |
| 538 | * |
| 539 | * Write @len bytes from @buffer to the compressed I/O channel. |
| 540 | * |
| 541 | * Returns the number of bytes written |
| 542 | */ |
| 543 | int |
| 544 | xmlGzfileWrite (void * context, const char * buffer, int len) { |
| 545 | return(gzwrite((gzFile) context, (char *) &buffer[0], len)); |
| 546 | } |
| 547 | |
| 548 | /** |
| 549 | * xmlGzfileClose: |
| 550 | * @context: the I/O context |
| 551 | * |
| 552 | * Close a compressed I/O channel |
| 553 | */ |
| 554 | void |
| 555 | xmlGzfileClose (void * context) { |
| 556 | gzclose((gzFile) context); |
| 557 | } |
| 558 | #endif /* HAVE_ZLIB_H */ |
| 559 | |
| 560 | #ifdef LIBXML_HTTP_ENABLED |
| 561 | /************************************************************************ |
| 562 | * * |
| 563 | * I/O for HTTP file accesses * |
| 564 | * * |
| 565 | ************************************************************************/ |
| 566 | /** |
| 567 | * xmlIOHTTPMatch: |
| 568 | * @filename: the URI for matching |
| 569 | * |
| 570 | * check if the URI matches an HTTP one |
| 571 | * |
| 572 | * Returns 1 if matches, 0 otherwise |
| 573 | */ |
| 574 | int |
| 575 | xmlIOHTTPMatch (const char *filename) { |
| 576 | if (!strncmp(filename, "http://", 7)) |
| 577 | return(1); |
| 578 | return(0); |
| 579 | } |
| 580 | |
| 581 | /** |
| 582 | * xmlIOHTTPOpen: |
| 583 | * @filename: the URI for matching |
| 584 | * |
| 585 | * open an HTTP I/O channel |
| 586 | * |
| 587 | * Returns an I/O context or NULL in case of error |
| 588 | */ |
| 589 | void * |
| 590 | xmlIOHTTPOpen (const char *filename) { |
| 591 | return(xmlNanoHTTPOpen(filename, NULL)); |
| 592 | } |
| 593 | |
| 594 | /** |
| 595 | * xmlIOHTTPRead: |
| 596 | * @context: the I/O context |
| 597 | * @buffer: where to drop data |
| 598 | * @len: number of bytes to write |
| 599 | * |
| 600 | * Read @len bytes to @buffer from the I/O channel. |
| 601 | * |
| 602 | * Returns the number of bytes written |
| 603 | */ |
| 604 | int |
| 605 | xmlIOHTTPRead(void * context, char * buffer, int len) { |
| 606 | return(xmlNanoHTTPRead(context, &buffer[0], len)); |
| 607 | } |
| 608 | |
| 609 | /** |
| 610 | * xmlIOHTTPClose: |
| 611 | * @context: the I/O context |
| 612 | * |
| 613 | * Close an HTTP I/O channel |
| 614 | */ |
| 615 | void |
| 616 | xmlIOHTTPClose (void * context) { |
| 617 | xmlNanoHTTPClose(context); |
| 618 | } |
| 619 | #endif /* LIBXML_HTTP_ENABLED */ |
| 620 | |
| 621 | #ifdef LIBXML_FTP_ENABLED |
| 622 | /************************************************************************ |
| 623 | * * |
| 624 | * I/O for FTP file accesses * |
| 625 | * * |
| 626 | ************************************************************************/ |
| 627 | /** |
| 628 | * xmlIOFTPMatch: |
| 629 | * @filename: the URI for matching |
| 630 | * |
| 631 | * check if the URI matches an FTP one |
| 632 | * |
| 633 | * Returns 1 if matches, 0 otherwise |
| 634 | */ |
| 635 | int |
| 636 | xmlIOFTPMatch (const char *filename) { |
| 637 | if (!strncmp(filename, "ftp://", 6)) |
| 638 | return(1); |
| 639 | return(0); |
| 640 | } |
| 641 | |
| 642 | /** |
| 643 | * xmlIOFTPOpen: |
| 644 | * @filename: the URI for matching |
| 645 | * |
| 646 | * open an FTP I/O channel |
| 647 | * |
| 648 | * Returns an I/O context or NULL in case of error |
| 649 | */ |
| 650 | void * |
| 651 | xmlIOFTPOpen (const char *filename) { |
| 652 | return(xmlNanoFTPOpen(filename)); |
| 653 | } |
| 654 | |
| 655 | /** |
| 656 | * xmlIOFTPRead: |
| 657 | * @context: the I/O context |
| 658 | * @buffer: where to drop data |
| 659 | * @len: number of bytes to write |
| 660 | * |
| 661 | * Read @len bytes to @buffer from the I/O channel. |
| 662 | * |
| 663 | * Returns the number of bytes written |
| 664 | */ |
| 665 | int |
| 666 | xmlIOFTPRead(void * context, char * buffer, int len) { |
| 667 | return(xmlNanoFTPRead(context, &buffer[0], len)); |
| 668 | } |
| 669 | |
| 670 | /** |
| 671 | * xmlIOFTPClose: |
| 672 | * @context: the I/O context |
| 673 | * |
| 674 | * Close an FTP I/O channel |
| 675 | */ |
| 676 | void |
| 677 | xmlIOFTPClose (void * context) { |
| 678 | xmlNanoFTPClose(context); |
| 679 | } |
| 680 | #endif /* LIBXML_FTP_ENABLED */ |
| 681 | |
| 682 | |
| 683 | /** |
| 684 | * xmlRegisterInputCallbacks: |
| 685 | * @match: the xmlInputMatchCallback |
| 686 | * @open: the xmlInputOpenCallback |
| 687 | * @read: the xmlInputReadCallback |
| 688 | * @close: the xmlInputCloseCallback |
| 689 | * |
| 690 | * Register a new set of I/O callback for handling parser input. |
| 691 | * |
| 692 | * Returns the registered handler number or -1 in case of error |
| 693 | */ |
| 694 | int |
| 695 | xmlRegisterInputCallbacks(xmlInputMatchCallback match, |
| 696 | xmlInputOpenCallback open, xmlInputReadCallback read, |
| 697 | xmlInputCloseCallback close) { |
| 698 | if (xmlInputCallbackNr >= MAX_INPUT_CALLBACK) { |
| 699 | return(-1); |
| 700 | } |
| 701 | xmlInputCallbackTable[xmlInputCallbackNr].matchcallback = match; |
| 702 | xmlInputCallbackTable[xmlInputCallbackNr].opencallback = open; |
| 703 | xmlInputCallbackTable[xmlInputCallbackNr].readcallback = read; |
| 704 | xmlInputCallbackTable[xmlInputCallbackNr].closecallback = close; |
| 705 | return(xmlInputCallbackNr++); |
| 706 | } |
| 707 | |
| 708 | /** |
| 709 | * xmlRegisterOutputCallbacks: |
| 710 | * @match: the xmlOutputMatchCallback |
| 711 | * @open: the xmlOutputOpenCallback |
| 712 | * @write: the xmlOutputWriteCallback |
| 713 | * @close: the xmlOutputCloseCallback |
| 714 | * |
| 715 | * Register a new set of I/O callback for handling output. |
| 716 | * |
| 717 | * Returns the registered handler number or -1 in case of error |
| 718 | */ |
| 719 | int |
| 720 | xmlRegisterOutputCallbacks(xmlOutputMatchCallback match, |
| 721 | xmlOutputOpenCallback open, xmlOutputWriteCallback write, |
| 722 | xmlOutputCloseCallback close) { |
| 723 | if (xmlOutputCallbackNr >= MAX_INPUT_CALLBACK) { |
| 724 | return(-1); |
| 725 | } |
| 726 | xmlOutputCallbackTable[xmlOutputCallbackNr].matchcallback = match; |
| 727 | xmlOutputCallbackTable[xmlOutputCallbackNr].opencallback = open; |
| 728 | xmlOutputCallbackTable[xmlOutputCallbackNr].writecallback = write; |
| 729 | xmlOutputCallbackTable[xmlOutputCallbackNr].closecallback = close; |
| 730 | return(xmlOutputCallbackNr++); |
| 731 | } |
| 732 | |
| 733 | /** |
| 734 | * xmlRegisterDefaultInputCallbacks: |
| 735 | * |
| 736 | * Registers the default compiled-in I/O handlers. |
| 737 | */ |
| 738 | void |
| 739 | #ifdef VMS |
| 740 | xmlRegisterDefInputCallbacks |
| 741 | #else |
| 742 | xmlRegisterDefaultInputCallbacks |
| 743 | #endif |
| 744 | (void) { |
| 745 | if (xmlInputCallbackInitialized) |
| 746 | return; |
| 747 | |
| 748 | xmlRegisterInputCallbacks(xmlFileMatch, xmlFileOpen, |
| 749 | xmlFileRead, xmlFileClose); |
| 750 | #ifdef HAVE_ZLIB_H |
| 751 | xmlRegisterInputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
| 752 | xmlGzfileRead, xmlGzfileClose); |
| 753 | #endif /* HAVE_ZLIB_H */ |
| 754 | |
| 755 | #ifdef LIBXML_HTTP_ENABLED |
| 756 | xmlRegisterInputCallbacks(xmlIOHTTPMatch, xmlIOHTTPOpen, |
| 757 | xmlIOHTTPRead, xmlIOHTTPClose); |
| 758 | #endif /* LIBXML_HTTP_ENABLED */ |
| 759 | |
| 760 | #ifdef LIBXML_FTP_ENABLED |
| 761 | xmlRegisterInputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, |
| 762 | xmlIOFTPRead, xmlIOFTPClose); |
| 763 | #endif /* LIBXML_FTP_ENABLED */ |
| 764 | xmlInputCallbackInitialized = 1; |
| 765 | } |
| 766 | |
| 767 | /** |
| 768 | * xmlRegisterDefaultOutputCallbacks: |
| 769 | * |
| 770 | * Registers the default compiled-in I/O handlers. |
| 771 | */ |
| 772 | void |
| 773 | #ifdef VMS |
| 774 | xmlRegisterDefOutputCallbacks |
| 775 | #else |
| 776 | xmlRegisterDefaultOutputCallbacks |
| 777 | #endif |
| 778 | (void) { |
| 779 | if (xmlOutputCallbackInitialized) |
| 780 | return; |
| 781 | |
| 782 | xmlRegisterOutputCallbacks(xmlFileMatch, xmlFileOpenW, |
| 783 | xmlFileWrite, xmlFileClose); |
| 784 | /********************************* |
| 785 | No way a-priori to distinguish between gzipped files from |
| 786 | uncompressed ones except opening if existing then closing |
| 787 | and saving with same compression ratio ... a pain. |
| 788 | |
| 789 | #ifdef HAVE_ZLIB_H |
| 790 | xmlRegisterOutputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
| 791 | xmlGzfileWrite, xmlGzfileClose); |
| 792 | #endif |
| 793 | No HTTP PUT support yet, patches welcome |
| 794 | |
| 795 | #ifdef LIBXML_HTTP_ENABLED |
| 796 | xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPOpen, |
| 797 | xmlIOHTTPWrite, xmlIOHTTPClose); |
| 798 | #endif |
| 799 | |
| 800 | Nor FTP PUT .... |
| 801 | #ifdef LIBXML_FTP_ENABLED |
| 802 | xmlRegisterOutputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, |
| 803 | xmlIOFTPWrite, xmlIOFTPClose); |
| 804 | #endif |
| 805 | **********************************/ |
| 806 | xmlOutputCallbackInitialized = 1; |
| 807 | } |
| 808 | |
| 809 | /** |
| 810 | * xmlAllocParserInputBuffer: |
| 811 | * @enc: the charset encoding if known |
| 812 | * |
| 813 | * Create a buffered parser input for progressive parsing |
| 814 | * |
| 815 | * Returns the new parser input or NULL |
| 816 | */ |
| 817 | xmlParserInputBufferPtr |
| 818 | xmlAllocParserInputBuffer(xmlCharEncoding enc) { |
| 819 | xmlParserInputBufferPtr ret; |
| 820 | |
| 821 | ret = (xmlParserInputBufferPtr) xmlMalloc(sizeof(xmlParserInputBuffer)); |
| 822 | if (ret == NULL) { |
| 823 | xmlGenericError(xmlGenericErrorContext, |
| 824 | "xmlAllocParserInputBuffer : out of memory!\n"); |
| 825 | return(NULL); |
| 826 | } |
| 827 | memset(ret, 0, (size_t) sizeof(xmlParserInputBuffer)); |
| 828 | ret->buffer = xmlBufferCreate(); |
| 829 | if (ret->buffer == NULL) { |
| 830 | xmlFree(ret); |
| 831 | return(NULL); |
| 832 | } |
| 833 | ret->buffer->alloc = XML_BUFFER_ALLOC_DOUBLEIT; |
| 834 | ret->encoder = xmlGetCharEncodingHandler(enc); |
| 835 | if (ret->encoder != NULL) |
| 836 | ret->raw = xmlBufferCreate(); |
| 837 | else |
| 838 | ret->raw = NULL; |
| 839 | ret->readcallback = NULL; |
| 840 | ret->closecallback = NULL; |
| 841 | ret->context = NULL; |
| 842 | |
| 843 | return(ret); |
| 844 | } |
| 845 | |
| 846 | /** |
| 847 | * xmlAllocOutputBuffer: |
| 848 | * @encoder: the encoding converter or NULL |
| 849 | * |
| 850 | * Create a buffered parser output |
| 851 | * |
| 852 | * Returns the new parser output or NULL |
| 853 | */ |
| 854 | xmlOutputBufferPtr |
| 855 | xmlAllocOutputBuffer(xmlCharEncodingHandlerPtr encoder) { |
| 856 | xmlOutputBufferPtr ret; |
| 857 | |
| 858 | ret = (xmlOutputBufferPtr) xmlMalloc(sizeof(xmlOutputBuffer)); |
| 859 | if (ret == NULL) { |
| 860 | xmlGenericError(xmlGenericErrorContext, |
| 861 | "xmlAllocOutputBuffer : out of memory!\n"); |
| 862 | return(NULL); |
| 863 | } |
| 864 | memset(ret, 0, (size_t) sizeof(xmlOutputBuffer)); |
| 865 | ret->buffer = xmlBufferCreate(); |
| 866 | if (ret->buffer == NULL) { |
| 867 | xmlFree(ret); |
| 868 | return(NULL); |
| 869 | } |
| 870 | ret->buffer->alloc = XML_BUFFER_ALLOC_DOUBLEIT; |
| 871 | ret->encoder = encoder; |
| 872 | if (encoder != NULL) { |
| 873 | ret->conv = xmlBufferCreateSize(4000); |
| 874 | /* |
| 875 | * This call is designed to initiate the encoder state |
| 876 | */ |
| 877 | xmlCharEncOutFunc(encoder, ret->conv, NULL); |
| 878 | } else |
| 879 | ret->conv = NULL; |
| 880 | ret->writecallback = NULL; |
| 881 | ret->closecallback = NULL; |
| 882 | ret->context = NULL; |
| 883 | ret->written = 0; |
| 884 | |
| 885 | return(ret); |
| 886 | } |
| 887 | |
| 888 | /** |
| 889 | * xmlFreeParserInputBuffer: |
| 890 | * @in: a buffered parser input |
| 891 | * |
| 892 | * Free up the memory used by a buffered parser input |
| 893 | */ |
| 894 | void |
| 895 | xmlFreeParserInputBuffer(xmlParserInputBufferPtr in) { |
| 896 | if (in->raw) { |
| 897 | xmlBufferFree(in->raw); |
| 898 | in->raw = NULL; |
| 899 | } |
| 900 | if (in->encoder != NULL) { |
| 901 | xmlCharEncCloseFunc(in->encoder); |
| 902 | } |
| 903 | if (in->closecallback != NULL) { |
| 904 | in->closecallback(in->context); |
| 905 | } |
| 906 | if (in->buffer != NULL) { |
| 907 | xmlBufferFree(in->buffer); |
| 908 | in->buffer = NULL; |
| 909 | } |
| 910 | |
Daniel Veillard | 48b2f89 | 2001-02-25 16:11:03 +0000 | [diff] [blame] | 911 | MEM_CLEANUP(in, (size_t) sizeof(xmlParserInputBuffer)); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 912 | xmlFree(in); |
| 913 | } |
| 914 | |
| 915 | /** |
| 916 | * xmlOutputBufferClose: |
| 917 | * @out: a buffered output |
| 918 | * |
| 919 | * flushes and close the output I/O channel |
| 920 | * and free up all the associated resources |
| 921 | * |
| 922 | * Returns the number of byte written or -1 in case of error. |
| 923 | */ |
| 924 | int |
| 925 | xmlOutputBufferClose(xmlOutputBufferPtr out) { |
| 926 | int written; |
| 927 | |
| 928 | if (out == NULL) |
| 929 | return(-1); |
| 930 | if (out->writecallback != NULL) |
| 931 | xmlOutputBufferFlush(out); |
| 932 | if (out->closecallback != NULL) { |
| 933 | out->closecallback(out->context); |
| 934 | } |
| 935 | written = out->written; |
| 936 | if (out->conv) { |
| 937 | xmlBufferFree(out->conv); |
| 938 | out->conv = NULL; |
| 939 | } |
| 940 | if (out->encoder != NULL) { |
| 941 | xmlCharEncCloseFunc(out->encoder); |
| 942 | } |
| 943 | if (out->buffer != NULL) { |
| 944 | xmlBufferFree(out->buffer); |
| 945 | out->buffer = NULL; |
| 946 | } |
| 947 | |
Daniel Veillard | 48b2f89 | 2001-02-25 16:11:03 +0000 | [diff] [blame] | 948 | MEM_CLEANUP(out, (size_t) sizeof(xmlOutputBuffer)); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 949 | xmlFree(out); |
| 950 | return(written); |
| 951 | } |
| 952 | |
| 953 | /** |
| 954 | * xmlParserInputBufferCreateFilename: |
| 955 | * @URI: a C string containing the URI or filename |
| 956 | * @enc: the charset encoding if known |
| 957 | * |
| 958 | * Create a buffered parser input for the progressive parsing of a file |
| 959 | * If filename is "-' then we use stdin as the input. |
| 960 | * Automatic support for ZLIB/Compress compressed document is provided |
| 961 | * by default if found at compile-time. |
| 962 | * Do an encoding check if enc == XML_CHAR_ENCODING_NONE |
| 963 | * |
| 964 | * Returns the new parser input or NULL |
| 965 | */ |
| 966 | xmlParserInputBufferPtr |
| 967 | #ifdef VMS |
| 968 | xmlParserInputBufferCreateFname |
| 969 | #else |
| 970 | xmlParserInputBufferCreateFilename |
| 971 | #endif |
| 972 | (const char *URI, xmlCharEncoding enc) { |
| 973 | xmlParserInputBufferPtr ret; |
| 974 | int i; |
| 975 | void *context = NULL; |
| 976 | |
| 977 | if (xmlInputCallbackInitialized == 0) |
| 978 | xmlRegisterDefaultInputCallbacks(); |
| 979 | |
| 980 | if (URI == NULL) return(NULL); |
| 981 | |
| 982 | /* |
| 983 | * Try to find one of the input accept method accepting taht scheme |
| 984 | * Go in reverse to give precedence to user defined handlers. |
| 985 | */ |
| 986 | for (i = xmlInputCallbackNr - 1;i >= 0;i--) { |
| 987 | if ((xmlInputCallbackTable[i].matchcallback != NULL) && |
| 988 | (xmlInputCallbackTable[i].matchcallback(URI) != 0)) { |
| 989 | context = xmlInputCallbackTable[i].opencallback(URI); |
| 990 | if (context != NULL) |
| 991 | break; |
| 992 | } |
| 993 | } |
| 994 | if (context == NULL) { |
| 995 | return(NULL); |
| 996 | } |
| 997 | |
| 998 | /* |
| 999 | * Allocate the Input buffer front-end. |
| 1000 | */ |
| 1001 | ret = xmlAllocParserInputBuffer(enc); |
| 1002 | if (ret != NULL) { |
| 1003 | ret->context = context; |
| 1004 | ret->readcallback = xmlInputCallbackTable[i].readcallback; |
| 1005 | ret->closecallback = xmlInputCallbackTable[i].closecallback; |
| 1006 | } |
| 1007 | return(ret); |
| 1008 | } |
| 1009 | |
| 1010 | /** |
| 1011 | * xmlOutputBufferCreateFilename: |
| 1012 | * @URI: a C string containing the URI or filename |
| 1013 | * @encoder: the encoding converter or NULL |
| 1014 | * @compression: the compression ration (0 none, 9 max). |
| 1015 | * |
| 1016 | * Create a buffered output for the progressive saving of a file |
| 1017 | * If filename is "-' then we use stdout as the output. |
| 1018 | * Automatic support for ZLIB/Compress compressed document is provided |
| 1019 | * by default if found at compile-time. |
| 1020 | * TODO: currently if compression is set, the library only support |
| 1021 | * writing to a local file. |
| 1022 | * |
| 1023 | * Returns the new output or NULL |
| 1024 | */ |
| 1025 | xmlOutputBufferPtr |
| 1026 | xmlOutputBufferCreateFilename(const char *URI, |
| 1027 | xmlCharEncodingHandlerPtr encoder, |
| 1028 | int compression) { |
| 1029 | xmlOutputBufferPtr ret; |
| 1030 | int i; |
| 1031 | void *context = NULL; |
| 1032 | |
| 1033 | if (xmlOutputCallbackInitialized == 0) |
| 1034 | xmlRegisterDefaultOutputCallbacks(); |
| 1035 | |
| 1036 | if (URI == NULL) return(NULL); |
| 1037 | |
| 1038 | #ifdef HAVE_ZLIB_H |
| 1039 | if ((compression > 0) && (compression <= 9)) { |
| 1040 | context = xmlGzfileOpenW(URI, compression); |
| 1041 | if (context != NULL) { |
| 1042 | ret = xmlAllocOutputBuffer(encoder); |
| 1043 | if (ret != NULL) { |
| 1044 | ret->context = context; |
| 1045 | ret->writecallback = xmlGzfileWrite; |
| 1046 | ret->closecallback = xmlGzfileClose; |
| 1047 | } |
| 1048 | return(ret); |
| 1049 | } |
| 1050 | } |
| 1051 | #endif |
| 1052 | |
| 1053 | /* |
| 1054 | * Try to find one of the output accept method accepting taht scheme |
| 1055 | * Go in reverse to give precedence to user defined handlers. |
| 1056 | */ |
| 1057 | for (i = xmlOutputCallbackNr - 1;i >= 0;i--) { |
| 1058 | if ((xmlOutputCallbackTable[i].matchcallback != NULL) && |
| 1059 | (xmlOutputCallbackTable[i].matchcallback(URI) != 0)) { |
| 1060 | context = xmlOutputCallbackTable[i].opencallback(URI); |
| 1061 | if (context != NULL) |
| 1062 | break; |
| 1063 | } |
| 1064 | } |
| 1065 | if (context == NULL) { |
| 1066 | return(NULL); |
| 1067 | } |
| 1068 | |
| 1069 | /* |
| 1070 | * Allocate the Output buffer front-end. |
| 1071 | */ |
| 1072 | ret = xmlAllocOutputBuffer(encoder); |
| 1073 | if (ret != NULL) { |
| 1074 | ret->context = context; |
| 1075 | ret->writecallback = xmlOutputCallbackTable[i].writecallback; |
| 1076 | ret->closecallback = xmlOutputCallbackTable[i].closecallback; |
| 1077 | } |
| 1078 | return(ret); |
| 1079 | } |
| 1080 | |
| 1081 | /** |
| 1082 | * xmlParserInputBufferCreateFile: |
| 1083 | * @file: a FILE* |
| 1084 | * @enc: the charset encoding if known |
| 1085 | * |
| 1086 | * Create a buffered parser input for the progressive parsing of a FILE * |
| 1087 | * buffered C I/O |
| 1088 | * |
| 1089 | * Returns the new parser input or NULL |
| 1090 | */ |
| 1091 | xmlParserInputBufferPtr |
| 1092 | xmlParserInputBufferCreateFile(FILE *file, xmlCharEncoding enc) { |
| 1093 | xmlParserInputBufferPtr ret; |
| 1094 | |
| 1095 | if (xmlInputCallbackInitialized == 0) |
| 1096 | xmlRegisterDefaultInputCallbacks(); |
| 1097 | |
| 1098 | if (file == NULL) return(NULL); |
| 1099 | |
| 1100 | ret = xmlAllocParserInputBuffer(enc); |
| 1101 | if (ret != NULL) { |
| 1102 | ret->context = file; |
| 1103 | ret->readcallback = xmlFileRead; |
| 1104 | ret->closecallback = xmlFileFlush; |
| 1105 | } |
| 1106 | |
| 1107 | return(ret); |
| 1108 | } |
| 1109 | |
| 1110 | /** |
| 1111 | * xmlOutputBufferCreateFile: |
| 1112 | * @file: a FILE* |
| 1113 | * @encoder: the encoding converter or NULL |
| 1114 | * |
| 1115 | * Create a buffered output for the progressive saving to a FILE * |
| 1116 | * buffered C I/O |
| 1117 | * |
| 1118 | * Returns the new parser output or NULL |
| 1119 | */ |
| 1120 | xmlOutputBufferPtr |
| 1121 | xmlOutputBufferCreateFile(FILE *file, xmlCharEncodingHandlerPtr encoder) { |
| 1122 | xmlOutputBufferPtr ret; |
| 1123 | |
| 1124 | if (xmlOutputCallbackInitialized == 0) |
| 1125 | xmlRegisterDefaultOutputCallbacks(); |
| 1126 | |
| 1127 | if (file == NULL) return(NULL); |
| 1128 | |
| 1129 | ret = xmlAllocOutputBuffer(encoder); |
| 1130 | if (ret != NULL) { |
| 1131 | ret->context = file; |
| 1132 | ret->writecallback = xmlFileWrite; |
| 1133 | ret->closecallback = xmlFileFlush; |
| 1134 | } |
| 1135 | |
| 1136 | return(ret); |
| 1137 | } |
| 1138 | |
| 1139 | /** |
| 1140 | * xmlParserInputBufferCreateFd: |
| 1141 | * @fd: a file descriptor number |
| 1142 | * @enc: the charset encoding if known |
| 1143 | * |
| 1144 | * Create a buffered parser input for the progressive parsing for the input |
| 1145 | * from a file descriptor |
| 1146 | * |
| 1147 | * Returns the new parser input or NULL |
| 1148 | */ |
| 1149 | xmlParserInputBufferPtr |
| 1150 | xmlParserInputBufferCreateFd(int fd, xmlCharEncoding enc) { |
| 1151 | xmlParserInputBufferPtr ret; |
| 1152 | |
| 1153 | if (fd < 0) return(NULL); |
| 1154 | |
| 1155 | ret = xmlAllocParserInputBuffer(enc); |
| 1156 | if (ret != NULL) { |
| 1157 | ret->context = (void *) fd; |
| 1158 | ret->readcallback = xmlFdRead; |
| 1159 | ret->closecallback = xmlFdClose; |
| 1160 | } |
| 1161 | |
| 1162 | return(ret); |
| 1163 | } |
| 1164 | |
| 1165 | /** |
| 1166 | * xmlParserInputBufferCreateMem: |
| 1167 | * @mem: the memory input |
| 1168 | * @size: the length of the memory block |
| 1169 | * @enc: the charset encoding if known |
| 1170 | * |
| 1171 | * Create a buffered parser input for the progressive parsing for the input |
| 1172 | * from a memory area. |
| 1173 | * |
| 1174 | * Returns the new parser input or NULL |
| 1175 | */ |
| 1176 | xmlParserInputBufferPtr |
| 1177 | xmlParserInputBufferCreateMem(const char *mem, int size, xmlCharEncoding enc) { |
| 1178 | xmlParserInputBufferPtr ret; |
| 1179 | |
| 1180 | if (size <= 0) return(NULL); |
| 1181 | if (mem == NULL) return(NULL); |
| 1182 | |
| 1183 | ret = xmlAllocParserInputBuffer(enc); |
| 1184 | if (ret != NULL) { |
| 1185 | ret->context = (void *) mem; |
| 1186 | ret->readcallback = (xmlInputReadCallback) xmlNop; |
| 1187 | ret->closecallback = NULL; |
| 1188 | xmlBufferAdd(ret->buffer, (const xmlChar *) mem, size); |
| 1189 | } |
| 1190 | |
| 1191 | return(ret); |
| 1192 | } |
| 1193 | |
| 1194 | /** |
| 1195 | * xmlOutputBufferCreateFd: |
| 1196 | * @fd: a file descriptor number |
| 1197 | * @encoder: the encoding converter or NULL |
| 1198 | * |
| 1199 | * Create a buffered output for the progressive saving |
| 1200 | * to a file descriptor |
| 1201 | * |
| 1202 | * Returns the new parser output or NULL |
| 1203 | */ |
| 1204 | xmlOutputBufferPtr |
| 1205 | xmlOutputBufferCreateFd(int fd, xmlCharEncodingHandlerPtr encoder) { |
| 1206 | xmlOutputBufferPtr ret; |
| 1207 | |
| 1208 | if (fd < 0) return(NULL); |
| 1209 | |
| 1210 | ret = xmlAllocOutputBuffer(encoder); |
| 1211 | if (ret != NULL) { |
| 1212 | ret->context = (void *) fd; |
| 1213 | ret->writecallback = xmlFdWrite; |
| 1214 | ret->closecallback = xmlFdClose; |
| 1215 | } |
| 1216 | |
| 1217 | return(ret); |
| 1218 | } |
| 1219 | |
| 1220 | /** |
| 1221 | * xmlParserInputBufferCreateIO: |
| 1222 | * @ioread: an I/O read function |
| 1223 | * @ioclose: an I/O close function |
| 1224 | * @ioctx: an I/O handler |
| 1225 | * @enc: the charset encoding if known |
| 1226 | * |
| 1227 | * Create a buffered parser input for the progressive parsing for the input |
| 1228 | * from an I/O handler |
| 1229 | * |
| 1230 | * Returns the new parser input or NULL |
| 1231 | */ |
| 1232 | xmlParserInputBufferPtr |
| 1233 | xmlParserInputBufferCreateIO(xmlInputReadCallback ioread, |
| 1234 | xmlInputCloseCallback ioclose, void *ioctx, xmlCharEncoding enc) { |
| 1235 | xmlParserInputBufferPtr ret; |
| 1236 | |
| 1237 | if (ioread == NULL) return(NULL); |
| 1238 | |
| 1239 | ret = xmlAllocParserInputBuffer(enc); |
| 1240 | if (ret != NULL) { |
| 1241 | ret->context = (void *) ioctx; |
| 1242 | ret->readcallback = ioread; |
| 1243 | ret->closecallback = ioclose; |
| 1244 | } |
| 1245 | |
| 1246 | return(ret); |
| 1247 | } |
| 1248 | |
| 1249 | /** |
| 1250 | * xmlOutputBufferCreateIO: |
| 1251 | * @iowrite: an I/O write function |
| 1252 | * @ioclose: an I/O close function |
| 1253 | * @ioctx: an I/O handler |
| 1254 | * @enc: the charset encoding if known |
| 1255 | * |
| 1256 | * Create a buffered output for the progressive saving |
| 1257 | * to an I/O handler |
| 1258 | * |
| 1259 | * Returns the new parser output or NULL |
| 1260 | */ |
| 1261 | xmlOutputBufferPtr |
| 1262 | xmlOutputBufferCreateIO(xmlOutputWriteCallback iowrite, |
| 1263 | xmlOutputCloseCallback ioclose, void *ioctx, |
| 1264 | xmlCharEncodingHandlerPtr encoder) { |
| 1265 | xmlOutputBufferPtr ret; |
| 1266 | |
| 1267 | if (iowrite == NULL) return(NULL); |
| 1268 | |
| 1269 | ret = xmlAllocOutputBuffer(encoder); |
| 1270 | if (ret != NULL) { |
| 1271 | ret->context = (void *) ioctx; |
| 1272 | ret->writecallback = iowrite; |
| 1273 | ret->closecallback = ioclose; |
| 1274 | } |
| 1275 | |
| 1276 | return(ret); |
| 1277 | } |
| 1278 | |
| 1279 | /** |
| 1280 | * xmlParserInputBufferPush: |
| 1281 | * @in: a buffered parser input |
| 1282 | * @len: the size in bytes of the array. |
| 1283 | * @buf: an char array |
| 1284 | * |
| 1285 | * Push the content of the arry in the input buffer |
| 1286 | * This routine handle the I18N transcoding to internal UTF-8 |
| 1287 | * This is used when operating the parser in progressive (push) mode. |
| 1288 | * |
| 1289 | * Returns the number of chars read and stored in the buffer, or -1 |
| 1290 | * in case of error. |
| 1291 | */ |
| 1292 | int |
| 1293 | xmlParserInputBufferPush(xmlParserInputBufferPtr in, |
| 1294 | int len, const char *buf) { |
| 1295 | int nbchars = 0; |
| 1296 | |
| 1297 | if (len < 0) return(0); |
| 1298 | if (in->encoder != NULL) { |
| 1299 | /* |
| 1300 | * Store the data in the incoming raw buffer |
| 1301 | */ |
| 1302 | if (in->raw == NULL) { |
| 1303 | in->raw = xmlBufferCreate(); |
| 1304 | } |
| 1305 | xmlBufferAdd(in->raw, (const xmlChar *) buf, len); |
| 1306 | |
| 1307 | /* |
| 1308 | * convert as much as possible to the parser reading buffer. |
| 1309 | */ |
| 1310 | nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw); |
| 1311 | if (nbchars < 0) { |
| 1312 | xmlGenericError(xmlGenericErrorContext, |
| 1313 | "xmlParserInputBufferPush: encoder error\n"); |
| 1314 | return(-1); |
| 1315 | } |
| 1316 | } else { |
| 1317 | nbchars = len; |
| 1318 | xmlBufferAdd(in->buffer, (xmlChar *) buf, nbchars); |
| 1319 | } |
| 1320 | #ifdef DEBUG_INPUT |
| 1321 | xmlGenericError(xmlGenericErrorContext, |
| 1322 | "I/O: pushed %d chars, buffer %d/%d\n", |
| 1323 | nbchars, in->buffer->use, in->buffer->size); |
| 1324 | #endif |
| 1325 | return(nbchars); |
| 1326 | } |
| 1327 | |
| 1328 | /** |
| 1329 | * xmlParserInputBufferGrow: |
| 1330 | * @in: a buffered parser input |
| 1331 | * @len: indicative value of the amount of chars to read |
| 1332 | * |
| 1333 | * Grow up the content of the input buffer, the old data are preserved |
| 1334 | * This routine handle the I18N transcoding to internal UTF-8 |
| 1335 | * This routine is used when operating the parser in normal (pull) mode |
| 1336 | * |
| 1337 | * TODO: one should be able to remove one extra copy by copying directy |
| 1338 | * onto in->buffer or in->raw |
| 1339 | * |
| 1340 | * Returns the number of chars read and stored in the buffer, or -1 |
| 1341 | * in case of error. |
| 1342 | */ |
| 1343 | int |
| 1344 | xmlParserInputBufferGrow(xmlParserInputBufferPtr in, int len) { |
| 1345 | char *buffer = NULL; |
| 1346 | int res = 0; |
| 1347 | int nbchars = 0; |
| 1348 | int buffree; |
| 1349 | |
| 1350 | if ((len <= MINLEN) && (len != 4)) |
| 1351 | len = MINLEN; |
| 1352 | buffree = in->buffer->size - in->buffer->use; |
| 1353 | if (buffree <= 0) { |
| 1354 | xmlGenericError(xmlGenericErrorContext, |
| 1355 | "xmlParserInputBufferGrow : buffer full !\n"); |
| 1356 | return(0); |
| 1357 | } |
| 1358 | if (len > buffree) |
| 1359 | len = buffree; |
| 1360 | |
| 1361 | buffer = (char *) xmlMalloc((len + 1) * sizeof(char)); |
| 1362 | if (buffer == NULL) { |
| 1363 | xmlGenericError(xmlGenericErrorContext, |
| 1364 | "xmlParserInputBufferGrow : out of memory !\n"); |
| 1365 | return(-1); |
| 1366 | } |
| 1367 | |
| 1368 | /* |
| 1369 | * Call the read method for this I/O type. |
| 1370 | */ |
| 1371 | if (in->readcallback != NULL) { |
| 1372 | res = in->readcallback(in->context, &buffer[0], len); |
| 1373 | } else { |
| 1374 | xmlGenericError(xmlGenericErrorContext, |
| 1375 | "xmlParserInputBufferGrow : no input !\n"); |
| 1376 | xmlFree(buffer); |
| 1377 | return(-1); |
| 1378 | } |
| 1379 | if (res < 0) { |
| 1380 | perror ("read error"); |
| 1381 | xmlFree(buffer); |
| 1382 | return(-1); |
| 1383 | } |
| 1384 | len = res; |
| 1385 | if (in->encoder != NULL) { |
| 1386 | /* |
| 1387 | * Store the data in the incoming raw buffer |
| 1388 | */ |
| 1389 | if (in->raw == NULL) { |
| 1390 | in->raw = xmlBufferCreate(); |
| 1391 | } |
| 1392 | xmlBufferAdd(in->raw, (const xmlChar *) buffer, len); |
| 1393 | |
| 1394 | /* |
| 1395 | * convert as much as possible to the parser reading buffer. |
| 1396 | */ |
| 1397 | nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw); |
| 1398 | if (nbchars < 0) { |
| 1399 | xmlGenericError(xmlGenericErrorContext, |
| 1400 | "xmlParserInputBufferGrow: encoder error\n"); |
| 1401 | return(-1); |
| 1402 | } |
| 1403 | } else { |
| 1404 | nbchars = len; |
| 1405 | buffer[nbchars] = 0; |
| 1406 | xmlBufferAdd(in->buffer, (xmlChar *) buffer, nbchars); |
| 1407 | } |
| 1408 | #ifdef DEBUG_INPUT |
| 1409 | xmlGenericError(xmlGenericErrorContext, |
| 1410 | "I/O: read %d chars, buffer %d/%d\n", |
| 1411 | nbchars, in->buffer->use, in->buffer->size); |
| 1412 | #endif |
| 1413 | xmlFree(buffer); |
| 1414 | return(nbchars); |
| 1415 | } |
| 1416 | |
| 1417 | /** |
| 1418 | * xmlParserInputBufferRead: |
| 1419 | * @in: a buffered parser input |
| 1420 | * @len: indicative value of the amount of chars to read |
| 1421 | * |
| 1422 | * Refresh the content of the input buffer, the old data are considered |
| 1423 | * consumed |
| 1424 | * This routine handle the I18N transcoding to internal UTF-8 |
| 1425 | * |
| 1426 | * Returns the number of chars read and stored in the buffer, or -1 |
| 1427 | * in case of error. |
| 1428 | */ |
| 1429 | int |
| 1430 | xmlParserInputBufferRead(xmlParserInputBufferPtr in, int len) { |
| 1431 | /* xmlBufferEmpty(in->buffer); */ |
| 1432 | if (in->readcallback != NULL) |
| 1433 | return(xmlParserInputBufferGrow(in, len)); |
| 1434 | else |
| 1435 | return(-1); |
| 1436 | } |
| 1437 | |
| 1438 | /** |
| 1439 | * xmlOutputBufferWrite: |
| 1440 | * @out: a buffered parser output |
| 1441 | * @len: the size in bytes of the array. |
| 1442 | * @buf: an char array |
| 1443 | * |
| 1444 | * Write the content of the array in the output I/O buffer |
| 1445 | * This routine handle the I18N transcoding from internal UTF-8 |
| 1446 | * The buffer is lossless, i.e. will store in case of partial |
| 1447 | * or delayed writes. |
| 1448 | * |
| 1449 | * Returns the number of chars immediately written, or -1 |
| 1450 | * in case of error. |
| 1451 | */ |
| 1452 | int |
| 1453 | xmlOutputBufferWrite(xmlOutputBufferPtr out, int len, const char *buf) { |
| 1454 | int nbchars = 0; /* number of chars to output to I/O */ |
| 1455 | int ret; /* return from function call */ |
| 1456 | int written = 0; /* number of char written to I/O so far */ |
| 1457 | int chunk; /* number of byte curreent processed from buf */ |
| 1458 | |
| 1459 | if (len < 0) return(0); |
| 1460 | |
| 1461 | do { |
| 1462 | chunk = len; |
| 1463 | if (chunk > 4 * MINLEN) |
| 1464 | chunk = 4 * MINLEN; |
| 1465 | |
| 1466 | /* |
| 1467 | * first handle encoding stuff. |
| 1468 | */ |
| 1469 | if (out->encoder != NULL) { |
| 1470 | /* |
| 1471 | * Store the data in the incoming raw buffer |
| 1472 | */ |
| 1473 | if (out->conv == NULL) { |
| 1474 | out->conv = xmlBufferCreate(); |
| 1475 | } |
| 1476 | xmlBufferAdd(out->buffer, (const xmlChar *) buf, chunk); |
| 1477 | |
| 1478 | if ((out->buffer->use < MINLEN) && (chunk == len)) |
| 1479 | goto done; |
| 1480 | |
| 1481 | /* |
| 1482 | * convert as much as possible to the parser reading buffer. |
| 1483 | */ |
| 1484 | ret = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
| 1485 | if (ret < 0) { |
| 1486 | xmlGenericError(xmlGenericErrorContext, |
| 1487 | "xmlOutputBufferWrite: encoder error\n"); |
| 1488 | return(-1); |
| 1489 | } |
| 1490 | nbchars = out->conv->use; |
| 1491 | } else { |
| 1492 | xmlBufferAdd(out->buffer, (const xmlChar *) buf, chunk); |
| 1493 | nbchars = out->buffer->use; |
| 1494 | } |
| 1495 | buf += chunk; |
| 1496 | len -= chunk; |
| 1497 | |
| 1498 | if ((nbchars < MINLEN) && (len <= 0)) |
| 1499 | goto done; |
| 1500 | |
| 1501 | if (out->writecallback) { |
| 1502 | /* |
| 1503 | * second write the stuff to the I/O channel |
| 1504 | */ |
| 1505 | if (out->encoder != NULL) { |
| 1506 | ret = out->writecallback(out->context, |
| 1507 | (const char *)out->conv->content, nbchars); |
| 1508 | if (ret >= 0) |
| 1509 | xmlBufferShrink(out->conv, nbchars); |
| 1510 | } else { |
| 1511 | ret = out->writecallback(out->context, |
| 1512 | (const char *)out->buffer->content, nbchars); |
| 1513 | if (ret >= 0) |
| 1514 | xmlBufferShrink(out->buffer, nbchars); |
| 1515 | } |
| 1516 | if (ret < 0) { |
| 1517 | xmlGenericError(xmlGenericErrorContext, |
| 1518 | "I/O: error %d writing %d bytes\n", ret, nbchars); |
| 1519 | return(ret); |
| 1520 | } |
| 1521 | out->written += ret; |
| 1522 | } |
| 1523 | written += nbchars; |
| 1524 | } while (len > 0); |
| 1525 | |
| 1526 | done: |
| 1527 | #ifdef DEBUG_INPUT |
| 1528 | xmlGenericError(xmlGenericErrorContext, |
| 1529 | "I/O: wrote %d chars\n", written); |
| 1530 | #endif |
| 1531 | return(written); |
| 1532 | } |
| 1533 | |
| 1534 | /** |
| 1535 | * xmlOutputBufferWriteString: |
| 1536 | * @out: a buffered parser output |
| 1537 | * @str: a zero terminated C string |
| 1538 | * |
| 1539 | * Write the content of the string in the output I/O buffer |
| 1540 | * This routine handle the I18N transcoding from internal UTF-8 |
| 1541 | * The buffer is lossless, i.e. will store in case of partial |
| 1542 | * or delayed writes. |
| 1543 | * |
| 1544 | * Returns the number of chars immediately written, or -1 |
| 1545 | * in case of error. |
| 1546 | */ |
| 1547 | int |
| 1548 | xmlOutputBufferWriteString(xmlOutputBufferPtr out, const char *str) { |
| 1549 | int len; |
| 1550 | |
| 1551 | if (str == NULL) |
| 1552 | return(-1); |
| 1553 | len = strlen(str); |
| 1554 | |
| 1555 | if (len > 0) |
| 1556 | return(xmlOutputBufferWrite(out, len, str)); |
| 1557 | return(len); |
| 1558 | } |
| 1559 | |
| 1560 | /** |
| 1561 | * xmlOutputBufferFlush: |
| 1562 | * @out: a buffered output |
| 1563 | * |
| 1564 | * flushes the output I/O channel |
| 1565 | * |
| 1566 | * Returns the number of byte written or -1 in case of error. |
| 1567 | */ |
| 1568 | int |
| 1569 | xmlOutputBufferFlush(xmlOutputBufferPtr out) { |
| 1570 | int nbchars = 0, ret = 0; |
| 1571 | |
| 1572 | /* |
| 1573 | * first handle encoding stuff. |
| 1574 | */ |
| 1575 | if ((out->conv != NULL) && (out->encoder != NULL)) { |
| 1576 | /* |
| 1577 | * convert as much as possible to the parser reading buffer. |
| 1578 | */ |
| 1579 | nbchars = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
| 1580 | if (nbchars < 0) { |
| 1581 | xmlGenericError(xmlGenericErrorContext, |
| 1582 | "xmlOutputBufferWrite: encoder error\n"); |
| 1583 | return(-1); |
| 1584 | } |
| 1585 | } |
| 1586 | |
| 1587 | /* |
| 1588 | * second flush the stuff to the I/O channel |
| 1589 | */ |
| 1590 | if ((out->conv != NULL) && (out->encoder != NULL) && |
| 1591 | (out->writecallback != NULL)) { |
| 1592 | ret = out->writecallback(out->context, |
| 1593 | (const char *)out->conv->content, out->conv->use); |
| 1594 | if (ret >= 0) |
| 1595 | xmlBufferShrink(out->conv, ret); |
| 1596 | } else if (out->writecallback != NULL) { |
| 1597 | ret = out->writecallback(out->context, |
| 1598 | (const char *)out->buffer->content, out->buffer->use); |
| 1599 | if (ret >= 0) |
| 1600 | xmlBufferShrink(out->buffer, ret); |
| 1601 | } |
| 1602 | if (ret < 0) { |
| 1603 | xmlGenericError(xmlGenericErrorContext, |
| 1604 | "I/O: error %d flushing %d bytes\n", ret, nbchars); |
| 1605 | return(ret); |
| 1606 | } |
| 1607 | out->written += ret; |
| 1608 | |
| 1609 | #ifdef DEBUG_INPUT |
| 1610 | xmlGenericError(xmlGenericErrorContext, |
| 1611 | "I/O: flushed %d chars\n", ret); |
| 1612 | #endif |
| 1613 | return(ret); |
| 1614 | } |
| 1615 | |
| 1616 | /* |
| 1617 | * xmlParserGetDirectory: |
| 1618 | * @filename: the path to a file |
| 1619 | * |
| 1620 | * lookup the directory for that file |
| 1621 | * |
| 1622 | * Returns a new allocated string containing the directory, or NULL. |
| 1623 | */ |
| 1624 | char * |
| 1625 | xmlParserGetDirectory(const char *filename) { |
| 1626 | char *ret = NULL; |
| 1627 | char dir[1024]; |
| 1628 | char *cur; |
| 1629 | char sep = '/'; |
| 1630 | |
| 1631 | if (xmlInputCallbackInitialized == 0) |
| 1632 | xmlRegisterDefaultInputCallbacks(); |
| 1633 | |
| 1634 | if (filename == NULL) return(NULL); |
| 1635 | #ifdef WIN32 |
| 1636 | sep = '\\'; |
| 1637 | #endif |
| 1638 | |
| 1639 | strncpy(dir, filename, 1023); |
| 1640 | dir[1023] = 0; |
| 1641 | cur = &dir[strlen(dir)]; |
| 1642 | while (cur > dir) { |
| 1643 | if (*cur == sep) break; |
| 1644 | cur --; |
| 1645 | } |
| 1646 | if (*cur == sep) { |
| 1647 | if (cur == dir) dir[1] = 0; |
| 1648 | else *cur = 0; |
| 1649 | ret = xmlMemStrdup(dir); |
| 1650 | } else { |
| 1651 | if (getcwd(dir, 1024) != NULL) { |
| 1652 | dir[1023] = 0; |
| 1653 | ret = xmlMemStrdup(dir); |
| 1654 | } |
| 1655 | } |
| 1656 | return(ret); |
| 1657 | } |
| 1658 | |
| 1659 | /**************************************************************** |
| 1660 | * * |
| 1661 | * External entities loading * |
| 1662 | * * |
| 1663 | ****************************************************************/ |
| 1664 | |
| 1665 | /* |
| 1666 | * xmlDefaultExternalEntityLoader: |
| 1667 | * @URL: the URL for the entity to load |
| 1668 | * @ID: the System ID for the entity to load |
| 1669 | * @ctxt: the context in which the entity is called or NULL |
| 1670 | * |
| 1671 | * By default we don't load external entitites, yet. |
| 1672 | * |
| 1673 | * Returns a new allocated xmlParserInputPtr, or NULL. |
| 1674 | */ |
| 1675 | static |
| 1676 | xmlParserInputPtr |
| 1677 | xmlDefaultExternalEntityLoader(const char *URL, const char *ID, |
| 1678 | xmlParserCtxtPtr ctxt) { |
| 1679 | xmlParserInputPtr ret = NULL; |
| 1680 | |
| 1681 | #ifdef DEBUG_EXTERNAL_ENTITIES |
| 1682 | xmlGenericError(xmlGenericErrorContext, |
| 1683 | "xmlDefaultExternalEntityLoader(%s, xxx)\n", URL); |
| 1684 | #endif |
| 1685 | if (URL == NULL) { |
| 1686 | if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL)) |
| 1687 | ctxt->sax->warning(ctxt, |
| 1688 | "failed to load external entity \"%s\"\n", ID); |
| 1689 | return(NULL); |
| 1690 | } |
| 1691 | ret = xmlNewInputFromFile(ctxt, URL); |
| 1692 | if (ret == NULL) { |
| 1693 | if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL)) |
| 1694 | ctxt->sax->warning(ctxt, |
| 1695 | "failed to load external entity \"%s\"\n", URL); |
| 1696 | } |
| 1697 | return(ret); |
| 1698 | } |
| 1699 | |
| 1700 | static xmlExternalEntityLoader xmlCurrentExternalEntityLoader = |
| 1701 | xmlDefaultExternalEntityLoader; |
| 1702 | |
| 1703 | /* |
| 1704 | * xmlSetExternalEntityLoader: |
| 1705 | * @f: the new entity resolver function |
| 1706 | * |
| 1707 | * Changes the defaultexternal entity resolver function for the application |
| 1708 | */ |
| 1709 | void |
| 1710 | xmlSetExternalEntityLoader(xmlExternalEntityLoader f) { |
| 1711 | xmlCurrentExternalEntityLoader = f; |
| 1712 | } |
| 1713 | |
| 1714 | /* |
| 1715 | * xmlGetExternalEntityLoader: |
| 1716 | * |
| 1717 | * Get the default external entity resolver function for the application |
| 1718 | * |
| 1719 | * Returns the xmlExternalEntityLoader function pointer |
| 1720 | */ |
| 1721 | xmlExternalEntityLoader |
| 1722 | xmlGetExternalEntityLoader(void) { |
| 1723 | return(xmlCurrentExternalEntityLoader); |
| 1724 | } |
| 1725 | |
| 1726 | /* |
| 1727 | * xmlLoadExternalEntity: |
| 1728 | * @URL: the URL for the entity to load |
| 1729 | * @ID: the System ID for the entity to load |
| 1730 | * @ctxt: the context in which the entity is called or NULL |
| 1731 | * |
| 1732 | * Load an external entity, note that the use of this function for |
| 1733 | * unparsed entities may generate problems |
| 1734 | * TODO: a more generic External entitiy API must be designed |
| 1735 | * |
| 1736 | * Returns the xmlParserInputPtr or NULL |
| 1737 | */ |
| 1738 | xmlParserInputPtr |
| 1739 | xmlLoadExternalEntity(const char *URL, const char *ID, |
| 1740 | xmlParserCtxtPtr ctxt) { |
| 1741 | return(xmlCurrentExternalEntityLoader(URL, ID, ctxt)); |
| 1742 | } |
| 1743 | |