cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3 | % % |
| 4 | % % |
| 5 | % % |
| 6 | % BBBB L OOO BBBB % |
| 7 | % B B L O O B B % |
| 8 | % BBBB L O O BBBB % |
| 9 | % B B L O O B B % |
| 10 | % BBBB LLLLL OOO BBBB % |
| 11 | % % |
| 12 | % % |
| 13 | % MagickCore Binary Large OBjectS Methods % |
| 14 | % % |
| 15 | % Software Design % |
| 16 | % John Cristy % |
| 17 | % July 1999 % |
| 18 | % % |
| 19 | % % |
cristy | 1454be7 | 2011-12-19 01:52:48 +0000 | [diff] [blame] | 20 | % Copyright 1999-2012 ImageMagick Studio LLC, a non-profit organization % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 21 | % dedicated to making software imaging solutions freely available. % |
| 22 | % % |
| 23 | % You may not use this file except in compliance with the License. You may % |
| 24 | % obtain a copy of the License at % |
| 25 | % % |
| 26 | % http://www.imagemagick.org/script/license.php % |
| 27 | % % |
| 28 | % Unless required by applicable law or agreed to in writing, software % |
| 29 | % distributed under the License is distributed on an "AS IS" BASIS, % |
| 30 | % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
| 31 | % See the License for the specific language governing permissions and % |
| 32 | % limitations under the License. % |
| 33 | % % |
| 34 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 35 | % |
| 36 | % |
| 37 | % |
| 38 | */ |
| 39 | |
| 40 | /* |
| 41 | Include declarations. |
| 42 | */ |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 43 | #include "MagickCore/studio.h" |
| 44 | #include "MagickCore/blob.h" |
| 45 | #include "MagickCore/blob-private.h" |
| 46 | #include "MagickCore/cache.h" |
| 47 | #include "MagickCore/client.h" |
| 48 | #include "MagickCore/constitute.h" |
| 49 | #include "MagickCore/delegate.h" |
| 50 | #include "MagickCore/exception.h" |
| 51 | #include "MagickCore/exception-private.h" |
| 52 | #include "MagickCore/image-private.h" |
| 53 | #include "MagickCore/list.h" |
| 54 | #include "MagickCore/locale_.h" |
| 55 | #include "MagickCore/log.h" |
| 56 | #include "MagickCore/magick.h" |
| 57 | #include "MagickCore/memory_.h" |
| 58 | #include "MagickCore/policy.h" |
| 59 | #include "MagickCore/resource_.h" |
| 60 | #include "MagickCore/semaphore.h" |
| 61 | #include "MagickCore/string_.h" |
| 62 | #include "MagickCore/string-private.h" |
| 63 | #include "MagickCore/token.h" |
| 64 | #include "MagickCore/utility.h" |
cristy | d1dd6e4 | 2011-09-04 01:46:08 +0000 | [diff] [blame] | 65 | #include "MagickCore/utility-private.h" |
cristy | 0157aea | 2010-04-24 21:12:18 +0000 | [diff] [blame] | 66 | #if defined(MAGICKCORE_HAVE_MMAP_FILEIO) && !defined(MAGICKCORE_WINDOWS_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 67 | # include <sys/mman.h> |
| 68 | #endif |
| 69 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
| 70 | #include "zlib.h" |
| 71 | #endif |
| 72 | #if defined(MAGICKCORE_BZLIB_DELEGATE) |
| 73 | #include "bzlib.h" |
| 74 | #endif |
| 75 | |
| 76 | /* |
| 77 | Define declarations. |
| 78 | */ |
| 79 | #define MagickMaxBlobExtent 65541 |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 80 | #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON) |
| 81 | # define MAP_ANONYMOUS MAP_ANON |
| 82 | #endif |
| 83 | #if !defined(MAP_FAILED) |
| 84 | #define MAP_FAILED ((void *) -1) |
| 85 | #endif |
| 86 | #if !defined(MS_SYNC) |
| 87 | #define MS_SYNC 0x04 |
| 88 | #endif |
| 89 | #if defined(__OS2__) |
| 90 | #include <io.h> |
| 91 | #define _O_BINARY O_BINARY |
| 92 | #endif |
| 93 | |
| 94 | /* |
| 95 | Typedef declarations. |
| 96 | */ |
| 97 | struct _BlobInfo |
| 98 | { |
| 99 | size_t |
| 100 | length, |
| 101 | extent, |
| 102 | quantum; |
| 103 | |
| 104 | MagickBooleanType |
| 105 | mapped, |
| 106 | eof; |
| 107 | |
| 108 | MagickOffsetType |
| 109 | offset; |
| 110 | |
| 111 | MagickSizeType |
| 112 | size; |
| 113 | |
| 114 | MagickBooleanType |
| 115 | exempt, |
| 116 | synchronize, |
| 117 | status, |
| 118 | temporary; |
| 119 | |
| 120 | StreamType |
| 121 | type; |
| 122 | |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 123 | union { |
| 124 | FILE |
| 125 | *file; |
| 126 | |
| 127 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
| 128 | gzFile |
| 129 | gzfile; |
| 130 | #endif |
| 131 | |
| 132 | #if defined(MAGICKCORE_BZLIB_DELEGATE) |
| 133 | BZFILE |
| 134 | *bzfile; |
| 135 | #endif |
| 136 | }; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 137 | |
| 138 | struct stat |
| 139 | properties; |
| 140 | |
| 141 | StreamHandler |
| 142 | stream; |
| 143 | |
| 144 | unsigned char |
| 145 | *data; |
| 146 | |
| 147 | MagickBooleanType |
| 148 | debug; |
| 149 | |
| 150 | SemaphoreInfo |
| 151 | *semaphore; |
| 152 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 153 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 154 | reference_count; |
| 155 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 156 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 157 | signature; |
| 158 | }; |
| 159 | |
| 160 | /* |
| 161 | Forward declarations. |
| 162 | */ |
| 163 | static int |
| 164 | SyncBlob(Image *); |
| 165 | |
| 166 | /* |
| 167 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 168 | % % |
| 169 | % % |
| 170 | % % |
| 171 | + A t t a c h B l o b % |
| 172 | % % |
| 173 | % % |
| 174 | % % |
| 175 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 176 | % |
| 177 | % AttachBlob() attaches a blob to the BlobInfo structure. |
| 178 | % |
| 179 | % The format of the AttachBlob method is: |
| 180 | % |
| 181 | % void AttachBlob(BlobInfo *blob_info,const void *blob,const size_t length) |
| 182 | % |
| 183 | % A description of each parameter follows: |
| 184 | % |
| 185 | % o blob_info: Specifies a pointer to a BlobInfo structure. |
| 186 | % |
| 187 | % o blob: the address of a character stream in one of the image formats |
| 188 | % understood by ImageMagick. |
| 189 | % |
| 190 | % o length: This size_t integer reflects the length in bytes of the blob. |
| 191 | % |
| 192 | */ |
| 193 | MagickExport void AttachBlob(BlobInfo *blob_info,const void *blob, |
| 194 | const size_t length) |
| 195 | { |
| 196 | assert(blob_info != (BlobInfo *) NULL); |
| 197 | if (blob_info->debug != MagickFalse) |
| 198 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
| 199 | blob_info->length=length; |
| 200 | blob_info->extent=length; |
| 201 | blob_info->quantum=(size_t) MagickMaxBlobExtent; |
| 202 | blob_info->offset=0; |
| 203 | blob_info->type=BlobStream; |
| 204 | blob_info->file=(FILE *) NULL; |
| 205 | blob_info->data=(unsigned char *) blob; |
| 206 | blob_info->mapped=MagickFalse; |
| 207 | } |
| 208 | |
| 209 | /* |
| 210 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 211 | % % |
| 212 | % % |
| 213 | % % |
| 214 | + B l o b T o F i l e % |
| 215 | % % |
| 216 | % % |
| 217 | % % |
| 218 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 219 | % |
| 220 | % BlobToFile() writes a blob to a file. It returns MagickFalse if an error |
| 221 | % occurs otherwise MagickTrue. |
| 222 | % |
| 223 | % The format of the BlobToFile method is: |
| 224 | % |
| 225 | % MagickBooleanType BlobToFile(char *filename,const void *blob, |
| 226 | % const size_t length,ExceptionInfo *exception) |
| 227 | % |
| 228 | % A description of each parameter follows: |
| 229 | % |
| 230 | % o filename: Write the blob to this file. |
| 231 | % |
| 232 | % o blob: the address of a blob. |
| 233 | % |
| 234 | % o length: This length in bytes of the blob. |
| 235 | % |
| 236 | % o exception: return any errors or warnings in this structure. |
| 237 | % |
| 238 | */ |
| 239 | |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 240 | static inline MagickSizeType MagickMin(const MagickSizeType x, |
| 241 | const MagickSizeType y) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 242 | { |
| 243 | if (x < y) |
| 244 | return(x); |
| 245 | return(y); |
| 246 | } |
| 247 | |
| 248 | MagickExport MagickBooleanType BlobToFile(char *filename,const void *blob, |
| 249 | const size_t length,ExceptionInfo *exception) |
| 250 | { |
| 251 | int |
| 252 | file; |
| 253 | |
| 254 | register size_t |
| 255 | i; |
| 256 | |
| 257 | ssize_t |
| 258 | count; |
| 259 | |
| 260 | assert(filename != (const char *) NULL); |
| 261 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",filename); |
| 262 | assert(blob != (const void *) NULL); |
| 263 | if (*filename == '\0') |
| 264 | file=AcquireUniqueFileResource(filename); |
| 265 | else |
cristy | 18c6c27 | 2011-09-23 14:40:37 +0000 | [diff] [blame] | 266 | file=open_utf8(filename,O_RDWR | O_CREAT | O_EXCL | O_BINARY,S_MODE); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 267 | if (file == -1) |
| 268 | { |
| 269 | ThrowFileException(exception,BlobError,"UnableToWriteBlob",filename); |
| 270 | return(MagickFalse); |
| 271 | } |
| 272 | for (i=0; i < length; i+=count) |
| 273 | { |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 274 | count=(ssize_t) write(file,(const char *) blob+i,(size_t) MagickMin(length- |
| 275 | i,(MagickSizeType) SSIZE_MAX)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 276 | if (count <= 0) |
| 277 | { |
| 278 | count=0; |
| 279 | if (errno != EINTR) |
| 280 | break; |
| 281 | } |
| 282 | } |
cristy | a7cb431 | 2010-06-26 00:47:03 +0000 | [diff] [blame] | 283 | file=close(file); |
| 284 | if ((file == -1) || (i < length)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 285 | { |
| 286 | ThrowFileException(exception,BlobError,"UnableToWriteBlob",filename); |
| 287 | return(MagickFalse); |
| 288 | } |
| 289 | return(MagickTrue); |
| 290 | } |
| 291 | |
| 292 | /* |
| 293 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 294 | % % |
| 295 | % % |
| 296 | % % |
| 297 | % B l o b T o I m a g e % |
| 298 | % % |
| 299 | % % |
| 300 | % % |
| 301 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 302 | % |
| 303 | % BlobToImage() implements direct to memory image formats. It returns the |
| 304 | % blob as an image. |
| 305 | % |
| 306 | % The format of the BlobToImage method is: |
| 307 | % |
| 308 | % Image *BlobToImage(const ImageInfo *image_info,const void *blob, |
| 309 | % const size_t length,ExceptionInfo *exception) |
| 310 | % |
| 311 | % A description of each parameter follows: |
| 312 | % |
| 313 | % o image_info: the image info. |
| 314 | % |
| 315 | % o blob: the address of a character stream in one of the image formats |
| 316 | % understood by ImageMagick. |
| 317 | % |
| 318 | % o length: This size_t integer reflects the length in bytes of the blob. |
| 319 | % |
| 320 | % o exception: return any errors or warnings in this structure. |
| 321 | % |
| 322 | */ |
| 323 | MagickExport Image *BlobToImage(const ImageInfo *image_info,const void *blob, |
| 324 | const size_t length,ExceptionInfo *exception) |
| 325 | { |
| 326 | const MagickInfo |
| 327 | *magick_info; |
| 328 | |
| 329 | Image |
| 330 | *image; |
| 331 | |
| 332 | ImageInfo |
| 333 | *blob_info, |
| 334 | *clone_info; |
| 335 | |
| 336 | MagickBooleanType |
| 337 | status; |
| 338 | |
| 339 | assert(image_info != (ImageInfo *) NULL); |
| 340 | assert(image_info->signature == MagickSignature); |
| 341 | if (image_info->debug != MagickFalse) |
| 342 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 343 | image_info->filename); |
| 344 | assert(exception != (ExceptionInfo *) NULL); |
| 345 | if ((blob == (const void *) NULL) || (length == 0)) |
| 346 | { |
| 347 | (void) ThrowMagickException(exception,GetMagickModule(),BlobError, |
| 348 | "ZeroLengthBlobNotPermitted","`%s'",image_info->filename); |
| 349 | return((Image *) NULL); |
| 350 | } |
| 351 | blob_info=CloneImageInfo(image_info); |
| 352 | blob_info->blob=(void *) blob; |
| 353 | blob_info->length=length; |
| 354 | if (*blob_info->magick == '\0') |
cristy | d965a42 | 2010-03-03 17:47:35 +0000 | [diff] [blame] | 355 | (void) SetImageInfo(blob_info,0,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 356 | magick_info=GetMagickInfo(blob_info->magick,exception); |
| 357 | if (magick_info == (const MagickInfo *) NULL) |
| 358 | { |
| 359 | blob_info=DestroyImageInfo(blob_info); |
| 360 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 361 | MissingDelegateError,"NoDecodeDelegateForThisImageFormat","`%s'", |
| 362 | image_info->filename); |
| 363 | return((Image *) NULL); |
| 364 | } |
| 365 | if (GetMagickBlobSupport(magick_info) != MagickFalse) |
| 366 | { |
| 367 | /* |
| 368 | Native blob support for this image format. |
| 369 | */ |
| 370 | (void) CopyMagickString(blob_info->filename,image_info->filename, |
| 371 | MaxTextExtent); |
| 372 | (void) CopyMagickString(blob_info->magick,image_info->magick, |
| 373 | MaxTextExtent); |
| 374 | image=ReadImage(blob_info,exception); |
| 375 | if (image != (Image *) NULL) |
| 376 | (void) DetachBlob(image->blob); |
| 377 | blob_info=DestroyImageInfo(blob_info); |
| 378 | return(image); |
| 379 | } |
| 380 | /* |
| 381 | Write blob to a temporary file on disk. |
| 382 | */ |
| 383 | blob_info->blob=(void *) NULL; |
| 384 | blob_info->length=0; |
| 385 | *blob_info->filename='\0'; |
| 386 | status=BlobToFile(blob_info->filename,blob,length,exception); |
| 387 | if (status == MagickFalse) |
| 388 | { |
| 389 | (void) RelinquishUniqueFileResource(blob_info->filename); |
| 390 | blob_info=DestroyImageInfo(blob_info); |
| 391 | return((Image *) NULL); |
| 392 | } |
| 393 | clone_info=CloneImageInfo(blob_info); |
cristy | b51dff5 | 2011-05-19 16:55:47 +0000 | [diff] [blame] | 394 | (void) FormatLocaleString(clone_info->filename,MaxTextExtent,"%s:%s", |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 395 | blob_info->magick,blob_info->filename); |
| 396 | image=ReadImage(clone_info,exception); |
| 397 | clone_info=DestroyImageInfo(clone_info); |
| 398 | (void) RelinquishUniqueFileResource(blob_info->filename); |
| 399 | blob_info=DestroyImageInfo(blob_info); |
| 400 | return(image); |
| 401 | } |
| 402 | |
| 403 | /* |
| 404 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 405 | % % |
| 406 | % % |
| 407 | % % |
| 408 | + C l o n e B l o b I n f o % |
| 409 | % % |
| 410 | % % |
| 411 | % % |
| 412 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 413 | % |
| 414 | % CloneBlobInfo() makes a duplicate of the given blob info structure, or if |
| 415 | % blob info is NULL, a new one. |
| 416 | % |
| 417 | % The format of the CloneBlobInfo method is: |
| 418 | % |
| 419 | % BlobInfo *CloneBlobInfo(const BlobInfo *blob_info) |
| 420 | % |
| 421 | % A description of each parameter follows: |
| 422 | % |
| 423 | % o blob_info: the blob info. |
| 424 | % |
| 425 | */ |
| 426 | MagickExport BlobInfo *CloneBlobInfo(const BlobInfo *blob_info) |
| 427 | { |
| 428 | BlobInfo |
| 429 | *clone_info; |
| 430 | |
cristy | 73bd4a5 | 2010-10-05 11:24:23 +0000 | [diff] [blame] | 431 | clone_info=(BlobInfo *) AcquireMagickMemory(sizeof(*clone_info)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 432 | if (clone_info == (BlobInfo *) NULL) |
| 433 | ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| 434 | GetBlobInfo(clone_info); |
| 435 | if (blob_info == (BlobInfo *) NULL) |
| 436 | return(clone_info); |
| 437 | clone_info->length=blob_info->length; |
| 438 | clone_info->extent=blob_info->extent; |
| 439 | clone_info->synchronize=blob_info->synchronize; |
| 440 | clone_info->quantum=blob_info->quantum; |
| 441 | clone_info->mapped=blob_info->mapped; |
| 442 | clone_info->eof=blob_info->eof; |
| 443 | clone_info->offset=blob_info->offset; |
| 444 | clone_info->size=blob_info->size; |
| 445 | clone_info->exempt=blob_info->exempt; |
| 446 | clone_info->status=blob_info->status; |
| 447 | clone_info->temporary=blob_info->temporary; |
| 448 | clone_info->type=blob_info->type; |
| 449 | clone_info->file=blob_info->file; |
| 450 | clone_info->properties=blob_info->properties; |
| 451 | clone_info->stream=blob_info->stream; |
| 452 | clone_info->data=blob_info->data; |
| 453 | clone_info->debug=IsEventLogging(); |
| 454 | clone_info->reference_count=1; |
| 455 | return(clone_info); |
| 456 | } |
| 457 | |
| 458 | /* |
| 459 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 460 | % % |
| 461 | % % |
| 462 | % % |
| 463 | + C l o s e B l o b % |
| 464 | % % |
| 465 | % % |
| 466 | % % |
| 467 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 468 | % |
| 469 | % CloseBlob() closes a stream associated with the image. |
| 470 | % |
| 471 | % The format of the CloseBlob method is: |
| 472 | % |
| 473 | % MagickBooleanType CloseBlob(Image *image) |
| 474 | % |
| 475 | % A description of each parameter follows: |
| 476 | % |
| 477 | % o image: the image. |
| 478 | % |
| 479 | */ |
| 480 | MagickExport MagickBooleanType CloseBlob(Image *image) |
| 481 | { |
| 482 | int |
| 483 | status; |
| 484 | |
| 485 | /* |
| 486 | Close image file. |
| 487 | */ |
| 488 | assert(image != (Image *) NULL); |
| 489 | assert(image->signature == MagickSignature); |
| 490 | if (image->debug != MagickFalse) |
| 491 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 492 | assert(image->blob != (BlobInfo *) NULL); |
| 493 | if (image->blob->type == UndefinedStream) |
| 494 | return(MagickTrue); |
| 495 | if (image->blob->synchronize != MagickFalse) |
| 496 | SyncBlob(image); |
| 497 | image->blob->size=GetBlobSize(image); |
cristy | 81b8ce5 | 2010-02-05 01:53:17 +0000 | [diff] [blame] | 498 | image->extent=image->blob->size; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 499 | image->blob->eof=MagickFalse; |
| 500 | if (image->blob->exempt != MagickFalse) |
| 501 | { |
| 502 | image->blob->type=UndefinedStream; |
| 503 | return(MagickTrue); |
| 504 | } |
| 505 | status=0; |
| 506 | switch (image->blob->type) |
| 507 | { |
| 508 | case UndefinedStream: |
| 509 | break; |
| 510 | case FileStream: |
| 511 | case StandardStream: |
| 512 | case PipeStream: |
| 513 | { |
| 514 | status=ferror(image->blob->file); |
| 515 | break; |
| 516 | } |
| 517 | case ZipStream: |
| 518 | { |
| 519 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 520 | (void) gzerror(image->blob->gzfile,&status); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 521 | #endif |
| 522 | break; |
| 523 | } |
| 524 | case BZipStream: |
| 525 | { |
| 526 | #if defined(MAGICKCORE_BZLIB_DELEGATE) |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 527 | (void) BZ2_bzerror(image->blob->bzfile,&status); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 528 | #endif |
| 529 | break; |
| 530 | } |
| 531 | case FifoStream: |
| 532 | case BlobStream: |
| 533 | break; |
| 534 | } |
| 535 | image->blob->status=status < 0 ? MagickTrue : MagickFalse; |
| 536 | switch (image->blob->type) |
| 537 | { |
| 538 | case UndefinedStream: |
| 539 | break; |
| 540 | case FileStream: |
| 541 | case StandardStream: |
| 542 | { |
| 543 | if (image->blob->synchronize != MagickFalse) |
cristy | ff48337 | 2010-10-16 17:00:58 +0000 | [diff] [blame] | 544 | { |
| 545 | status=fflush(image->blob->file); |
| 546 | status=fsync(fileno(image->blob->file)); |
| 547 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 548 | status=fclose(image->blob->file); |
| 549 | break; |
| 550 | } |
| 551 | case PipeStream: |
| 552 | { |
| 553 | #if defined(MAGICKCORE_HAVE_PCLOSE) |
| 554 | status=pclose(image->blob->file); |
| 555 | #endif |
| 556 | break; |
| 557 | } |
| 558 | case ZipStream: |
| 559 | { |
| 560 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 561 | status=gzclose(image->blob->gzfile); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 562 | #endif |
| 563 | break; |
| 564 | } |
| 565 | case BZipStream: |
| 566 | { |
| 567 | #if defined(MAGICKCORE_BZLIB_DELEGATE) |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 568 | BZ2_bzclose(image->blob->bzfile); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 569 | #endif |
| 570 | break; |
| 571 | } |
| 572 | case FifoStream: |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 573 | break; |
cristy | ff48337 | 2010-10-16 17:00:58 +0000 | [diff] [blame] | 574 | case BlobStream: |
| 575 | { |
| 576 | if (image->blob->file != (FILE *) NULL) |
| 577 | { |
| 578 | if (image->blob->synchronize != MagickFalse) |
| 579 | (void) fsync(fileno(image->blob->file)); |
| 580 | status=fclose(image->blob->file); |
| 581 | } |
| 582 | break; |
| 583 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 584 | } |
| 585 | (void) DetachBlob(image->blob); |
| 586 | image->blob->status=status < 0 ? MagickTrue : MagickFalse; |
| 587 | return(image->blob->status); |
| 588 | } |
| 589 | |
| 590 | /* |
| 591 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 592 | % % |
| 593 | % % |
| 594 | % % |
| 595 | + D e s t r o y B l o b % |
| 596 | % % |
| 597 | % % |
| 598 | % % |
| 599 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 600 | % |
| 601 | % DestroyBlob() deallocates memory associated with a blob. |
| 602 | % |
| 603 | % The format of the DestroyBlob method is: |
| 604 | % |
| 605 | % void DestroyBlob(Image *image) |
| 606 | % |
| 607 | % A description of each parameter follows: |
| 608 | % |
| 609 | % o image: the image. |
| 610 | % |
| 611 | */ |
| 612 | MagickExport void DestroyBlob(Image *image) |
| 613 | { |
| 614 | MagickBooleanType |
| 615 | destroy; |
| 616 | |
| 617 | assert(image != (Image *) NULL); |
| 618 | assert(image->signature == MagickSignature); |
| 619 | if (image->debug != MagickFalse) |
| 620 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 621 | assert(image->blob != (BlobInfo *) NULL); |
| 622 | assert(image->blob->signature == MagickSignature); |
| 623 | destroy=MagickFalse; |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 624 | LockSemaphoreInfo(image->blob->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 625 | image->blob->reference_count--; |
| 626 | assert(image->blob->reference_count >= 0); |
| 627 | if (image->blob->reference_count == 0) |
| 628 | destroy=MagickTrue; |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 629 | UnlockSemaphoreInfo(image->blob->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 630 | if (destroy == MagickFalse) |
| 631 | return; |
| 632 | (void) CloseBlob(image); |
| 633 | if (image->blob->mapped != MagickFalse) |
| 634 | (void) UnmapBlob(image->blob->data,image->blob->length); |
| 635 | if (image->blob->semaphore != (SemaphoreInfo *) NULL) |
| 636 | DestroySemaphoreInfo(&image->blob->semaphore); |
| 637 | image->blob->signature=(~MagickSignature); |
| 638 | image->blob=(BlobInfo *) RelinquishMagickMemory(image->blob); |
| 639 | } |
| 640 | |
| 641 | /* |
| 642 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 643 | % % |
| 644 | % % |
| 645 | % % |
| 646 | + D e t a c h B l o b % |
| 647 | % % |
| 648 | % % |
| 649 | % % |
| 650 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 651 | % |
| 652 | % DetachBlob() detaches a blob from the BlobInfo structure. |
| 653 | % |
| 654 | % The format of the DetachBlob method is: |
| 655 | % |
| 656 | % unsigned char *DetachBlob(BlobInfo *blob_info) |
| 657 | % |
| 658 | % A description of each parameter follows: |
| 659 | % |
| 660 | % o blob_info: Specifies a pointer to a BlobInfo structure. |
| 661 | % |
| 662 | */ |
| 663 | MagickExport unsigned char *DetachBlob(BlobInfo *blob_info) |
| 664 | { |
| 665 | unsigned char |
| 666 | *data; |
| 667 | |
| 668 | assert(blob_info != (BlobInfo *) NULL); |
| 669 | if (blob_info->debug != MagickFalse) |
| 670 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
| 671 | if (blob_info->mapped != MagickFalse) |
| 672 | (void) UnmapBlob(blob_info->data,blob_info->length); |
| 673 | blob_info->mapped=MagickFalse; |
| 674 | blob_info->length=0; |
| 675 | blob_info->offset=0; |
| 676 | blob_info->eof=MagickFalse; |
| 677 | blob_info->exempt=MagickFalse; |
| 678 | blob_info->type=UndefinedStream; |
| 679 | blob_info->file=(FILE *) NULL; |
| 680 | data=blob_info->data; |
| 681 | blob_info->data=(unsigned char *) NULL; |
| 682 | blob_info->stream=(StreamHandler) NULL; |
| 683 | return(data); |
| 684 | } |
| 685 | |
| 686 | /* |
| 687 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 688 | % % |
| 689 | % % |
| 690 | % % |
cristy | c1af14f | 2010-09-16 20:01:21 +0000 | [diff] [blame] | 691 | + D i s c a r d B l o b B y t e s % |
| 692 | % % |
| 693 | % % |
| 694 | % % |
| 695 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 696 | % |
| 697 | % DiscardBlobBytes() discards bytes in a blob. |
| 698 | % |
| 699 | % The format of the DiscardBlobBytes method is: |
| 700 | % |
| 701 | % MagickBooleanType DiscardBlobBytes(Image *image,const size_t length) |
| 702 | % |
| 703 | % A description of each parameter follows. |
| 704 | % |
| 705 | % o image: the image. |
| 706 | % |
| 707 | % o length: the number of bytes to skip. |
| 708 | % |
| 709 | */ |
| 710 | |
| 711 | static inline const unsigned char *ReadBlobStream(Image *image, |
| 712 | const size_t length,unsigned char *data,ssize_t *count) |
| 713 | { |
| 714 | assert(count != (ssize_t *) NULL); |
| 715 | assert(image->blob != (BlobInfo *) NULL); |
| 716 | if (image->blob->type != BlobStream) |
| 717 | { |
| 718 | *count=ReadBlob(image,length,data); |
| 719 | return(data); |
| 720 | } |
| 721 | if (image->blob->offset >= (MagickOffsetType) image->blob->length) |
| 722 | { |
| 723 | *count=0; |
| 724 | image->blob->eof=MagickTrue; |
| 725 | return(data); |
| 726 | } |
| 727 | data=image->blob->data+image->blob->offset; |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 728 | *count=(ssize_t) MagickMin(length,(MagickSizeType) (image->blob->length- |
cristy | c1af14f | 2010-09-16 20:01:21 +0000 | [diff] [blame] | 729 | image->blob->offset)); |
| 730 | image->blob->offset+=(*count); |
| 731 | if (*count != (ssize_t) length) |
| 732 | image->blob->eof=MagickTrue; |
| 733 | return(data); |
| 734 | } |
| 735 | |
| 736 | MagickExport MagickBooleanType DiscardBlobBytes(Image *image, |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 737 | const MagickSizeType length) |
cristy | c1af14f | 2010-09-16 20:01:21 +0000 | [diff] [blame] | 738 | { |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 739 | register MagickOffsetType |
cristy | c1af14f | 2010-09-16 20:01:21 +0000 | [diff] [blame] | 740 | i; |
| 741 | |
| 742 | size_t |
| 743 | quantum; |
| 744 | |
| 745 | ssize_t |
| 746 | count; |
| 747 | |
| 748 | unsigned char |
cristy | f55846d | 2010-09-17 19:01:10 +0000 | [diff] [blame] | 749 | buffer[16384]; |
cristy | c1af14f | 2010-09-16 20:01:21 +0000 | [diff] [blame] | 750 | |
| 751 | assert(image != (Image *) NULL); |
| 752 | assert(image->signature == MagickSignature); |
| 753 | count=0; |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 754 | for (i=0; i < (MagickOffsetType) length; i+=count) |
cristy | c1af14f | 2010-09-16 20:01:21 +0000 | [diff] [blame] | 755 | { |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 756 | quantum=(size_t) MagickMin(length-i,sizeof(buffer)); |
cristy | c1af14f | 2010-09-16 20:01:21 +0000 | [diff] [blame] | 757 | (void) ReadBlobStream(image,quantum,buffer,&count); |
| 758 | if (count <= 0) |
| 759 | { |
| 760 | count=0; |
| 761 | if (errno != EINTR) |
| 762 | break; |
| 763 | } |
| 764 | } |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 765 | return(i < (MagickOffsetType) length ? MagickFalse : MagickTrue); |
cristy | c1af14f | 2010-09-16 20:01:21 +0000 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | /* |
| 769 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 770 | % % |
| 771 | % % |
| 772 | % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 773 | + D u p l i c a t e s B l o b % |
| 774 | % % |
| 775 | % % |
| 776 | % % |
| 777 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 778 | % |
| 779 | % DuplicateBlob() duplicates a blob descriptor. |
| 780 | % |
| 781 | % The format of the DuplicateBlob method is: |
| 782 | % |
| 783 | % void DuplicateBlob(Image *image,const Image *duplicate) |
| 784 | % |
| 785 | % A description of each parameter follows: |
| 786 | % |
| 787 | % o image: the image. |
| 788 | % |
| 789 | % o duplicate: the duplicate image. |
| 790 | % |
| 791 | */ |
| 792 | MagickExport void DuplicateBlob(Image *image,const Image *duplicate) |
| 793 | { |
| 794 | assert(image != (Image *) NULL); |
| 795 | assert(image->signature == MagickSignature); |
| 796 | if (image->debug != MagickFalse) |
| 797 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 798 | assert(duplicate != (Image *) NULL); |
| 799 | assert(duplicate->signature == MagickSignature); |
| 800 | DestroyBlob(image); |
| 801 | image->blob=ReferenceBlob(duplicate->blob); |
| 802 | } |
| 803 | |
| 804 | /* |
| 805 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 806 | % % |
| 807 | % % |
| 808 | % % |
| 809 | + E O F B l o b % |
| 810 | % % |
| 811 | % % |
| 812 | % % |
| 813 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 814 | % |
| 815 | % EOFBlob() returns a non-zero value when EOF has been detected reading from |
| 816 | % a blob or file. |
| 817 | % |
| 818 | % The format of the EOFBlob method is: |
| 819 | % |
| 820 | % int EOFBlob(const Image *image) |
| 821 | % |
| 822 | % A description of each parameter follows: |
| 823 | % |
| 824 | % o image: the image. |
| 825 | % |
| 826 | */ |
| 827 | MagickExport int EOFBlob(const Image *image) |
| 828 | { |
| 829 | assert(image != (Image *) NULL); |
| 830 | assert(image->signature == MagickSignature); |
| 831 | if (image->debug != MagickFalse) |
| 832 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
| 833 | assert(image->blob != (BlobInfo *) NULL); |
| 834 | assert(image->blob->type != UndefinedStream); |
| 835 | switch (image->blob->type) |
| 836 | { |
| 837 | case UndefinedStream: |
| 838 | break; |
| 839 | case FileStream: |
| 840 | case StandardStream: |
| 841 | case PipeStream: |
| 842 | { |
| 843 | image->blob->eof=feof(image->blob->file) != 0 ? MagickTrue : MagickFalse; |
| 844 | break; |
| 845 | } |
| 846 | case ZipStream: |
| 847 | { |
| 848 | image->blob->eof=MagickFalse; |
| 849 | break; |
| 850 | } |
| 851 | case BZipStream: |
| 852 | { |
| 853 | #if defined(MAGICKCORE_BZLIB_DELEGATE) |
| 854 | int |
| 855 | status; |
| 856 | |
| 857 | status=0; |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 858 | (void) BZ2_bzerror(image->blob->bzfile,&status); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 859 | image->blob->eof=status == BZ_UNEXPECTED_EOF ? MagickTrue : MagickFalse; |
| 860 | #endif |
| 861 | break; |
| 862 | } |
| 863 | case FifoStream: |
| 864 | { |
| 865 | image->blob->eof=MagickFalse; |
| 866 | break; |
| 867 | } |
| 868 | case BlobStream: |
| 869 | break; |
| 870 | } |
| 871 | return((int) image->blob->eof); |
| 872 | } |
| 873 | |
| 874 | /* |
| 875 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 876 | % % |
| 877 | % % |
| 878 | % % |
| 879 | + F i l e T o B l o b % |
| 880 | % % |
| 881 | % % |
| 882 | % % |
| 883 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 884 | % |
cristy | 178edaf | 2011-01-23 03:42:39 +0000 | [diff] [blame] | 885 | % FileToBlob() returns the contents of a file as a buffer terminated with |
| 886 | % the '\0' character. The length of the buffer (not including the extra |
| 887 | % terminating '\0' character) is returned via the 'length' parameter. Free |
| 888 | % the buffer with RelinquishMagickMemory(). |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 889 | % |
| 890 | % The format of the FileToBlob method is: |
| 891 | % |
| 892 | % unsigned char *FileToBlob(const char *filename,const size_t extent, |
| 893 | % size_t *length,ExceptionInfo *exception) |
| 894 | % |
| 895 | % A description of each parameter follows: |
| 896 | % |
| 897 | % o blob: FileToBlob() returns the contents of a file as a blob. If |
| 898 | % an error occurs NULL is returned. |
| 899 | % |
| 900 | % o filename: the filename. |
| 901 | % |
| 902 | % o extent: The maximum length of the blob. |
| 903 | % |
| 904 | % o length: On return, this reflects the actual length of the blob. |
| 905 | % |
| 906 | % o exception: return any errors or warnings in this structure. |
| 907 | % |
| 908 | */ |
| 909 | MagickExport unsigned char *FileToBlob(const char *filename,const size_t extent, |
| 910 | size_t *length,ExceptionInfo *exception) |
| 911 | { |
| 912 | int |
| 913 | file; |
| 914 | |
| 915 | MagickOffsetType |
| 916 | offset; |
| 917 | |
| 918 | register size_t |
| 919 | i; |
| 920 | |
| 921 | ssize_t |
| 922 | count; |
| 923 | |
| 924 | unsigned char |
| 925 | *blob; |
| 926 | |
| 927 | void |
| 928 | *map; |
| 929 | |
| 930 | assert(filename != (const char *) NULL); |
| 931 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",filename); |
| 932 | assert(exception != (ExceptionInfo *) NULL); |
| 933 | *length=0; |
| 934 | file=fileno(stdin); |
| 935 | if (LocaleCompare(filename,"-") != 0) |
cristy | 18c6c27 | 2011-09-23 14:40:37 +0000 | [diff] [blame] | 936 | file=open_utf8(filename,O_RDONLY | O_BINARY,0); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 937 | if (file == -1) |
| 938 | { |
| 939 | ThrowFileException(exception,BlobError,"UnableToOpenFile",filename); |
| 940 | return((unsigned char *) NULL); |
| 941 | } |
cristy | 7f31770 | 2011-02-18 20:40:28 +0000 | [diff] [blame] | 942 | offset=(MagickOffsetType) lseek(file,0,SEEK_END); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 943 | count=0; |
| 944 | if ((offset < 0) || (offset != (MagickOffsetType) ((ssize_t) offset))) |
| 945 | { |
| 946 | size_t |
| 947 | quantum; |
| 948 | |
| 949 | struct stat |
| 950 | file_info; |
| 951 | |
| 952 | /* |
| 953 | Stream is not seekable. |
| 954 | */ |
| 955 | quantum=(size_t) MagickMaxBufferExtent; |
| 956 | if ((fstat(file,&file_info) == 0) && (file_info.st_size != 0)) |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 957 | quantum=(size_t) MagickMin((MagickSizeType) file_info.st_size, |
| 958 | MagickMaxBufferExtent); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 959 | blob=(unsigned char *) AcquireQuantumMemory(quantum,sizeof(*blob)); |
| 960 | for (i=0; blob != (unsigned char *) NULL; i+=count) |
| 961 | { |
| 962 | count=(ssize_t) read(file,blob+i,quantum); |
| 963 | if (count <= 0) |
| 964 | { |
| 965 | count=0; |
| 966 | if (errno != EINTR) |
| 967 | break; |
| 968 | } |
| 969 | if (~(1UL*i) < (quantum+1)) |
| 970 | { |
| 971 | blob=(unsigned char *) RelinquishMagickMemory(blob); |
| 972 | break; |
| 973 | } |
| 974 | blob=(unsigned char *) ResizeQuantumMemory(blob,i+quantum+1, |
| 975 | sizeof(*blob)); |
| 976 | if ((size_t) (i+count) >= extent) |
| 977 | break; |
| 978 | } |
cristy | 5443963 | 2010-07-15 00:43:34 +0000 | [diff] [blame] | 979 | if (LocaleCompare(filename,"-") != 0) |
| 980 | file=close(file); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 981 | if (blob == (unsigned char *) NULL) |
| 982 | { |
| 983 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 984 | ResourceLimitError,"MemoryAllocationFailed","`%s'",filename); |
| 985 | return((unsigned char *) NULL); |
| 986 | } |
cristy | a7cb431 | 2010-06-26 00:47:03 +0000 | [diff] [blame] | 987 | if (file == -1) |
| 988 | { |
| 989 | blob=(unsigned char *) RelinquishMagickMemory(blob); |
| 990 | ThrowFileException(exception,BlobError,"UnableToReadBlob",filename); |
| 991 | return((unsigned char *) NULL); |
| 992 | } |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 993 | *length=(size_t) MagickMin(i+count,extent); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 994 | blob[*length]='\0'; |
| 995 | return(blob); |
| 996 | } |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 997 | *length=(size_t) MagickMin((MagickSizeType) offset,extent); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 998 | blob=(unsigned char *) NULL; |
cristy | 37e0b38 | 2011-06-07 13:31:21 +0000 | [diff] [blame] | 999 | if (~(*length) >= (MaxTextExtent-1)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1000 | blob=(unsigned char *) AcquireQuantumMemory(*length+MaxTextExtent, |
| 1001 | sizeof(*blob)); |
| 1002 | if (blob == (unsigned char *) NULL) |
| 1003 | { |
cristy | 5443963 | 2010-07-15 00:43:34 +0000 | [diff] [blame] | 1004 | file=close(file); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1005 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 1006 | ResourceLimitError,"MemoryAllocationFailed","`%s'",filename); |
| 1007 | return((unsigned char *) NULL); |
| 1008 | } |
| 1009 | map=MapBlob(file,ReadMode,0,*length); |
| 1010 | if (map != (unsigned char *) NULL) |
| 1011 | { |
cristy | 54aad5e | 2010-09-03 16:02:04 +0000 | [diff] [blame] | 1012 | (void) memcpy(blob,map,*length); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1013 | (void) UnmapBlob(map,*length); |
| 1014 | } |
| 1015 | else |
| 1016 | { |
cristy | 7f31770 | 2011-02-18 20:40:28 +0000 | [diff] [blame] | 1017 | (void) lseek(file,0,SEEK_SET); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1018 | for (i=0; i < *length; i+=count) |
| 1019 | { |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 1020 | count=(ssize_t) read(file,blob+i,(size_t) MagickMin(*length-i, |
| 1021 | (MagickSizeType) SSIZE_MAX)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1022 | if (count <= 0) |
| 1023 | { |
| 1024 | count=0; |
| 1025 | if (errno != EINTR) |
| 1026 | break; |
| 1027 | } |
| 1028 | } |
| 1029 | if (i < *length) |
| 1030 | { |
| 1031 | file=close(file)-1; |
| 1032 | blob=(unsigned char *) RelinquishMagickMemory(blob); |
| 1033 | ThrowFileException(exception,BlobError,"UnableToReadBlob",filename); |
| 1034 | return((unsigned char *) NULL); |
| 1035 | } |
| 1036 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1037 | blob[*length]='\0'; |
cristy | 5443963 | 2010-07-15 00:43:34 +0000 | [diff] [blame] | 1038 | if (LocaleCompare(filename,"-") != 0) |
| 1039 | file=close(file); |
cristy | a7cb431 | 2010-06-26 00:47:03 +0000 | [diff] [blame] | 1040 | if (file == -1) |
| 1041 | { |
| 1042 | blob=(unsigned char *) RelinquishMagickMemory(blob); |
| 1043 | ThrowFileException(exception,BlobError,"UnableToReadBlob",filename); |
| 1044 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1045 | return(blob); |
| 1046 | } |
| 1047 | |
| 1048 | /* |
| 1049 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1050 | % % |
| 1051 | % % |
| 1052 | % % |
| 1053 | % F i l e T o I m a g e % |
| 1054 | % % |
| 1055 | % % |
| 1056 | % % |
| 1057 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1058 | % |
| 1059 | % FileToImage() write the contents of a file to an image. |
| 1060 | % |
| 1061 | % The format of the FileToImage method is: |
| 1062 | % |
| 1063 | % MagickBooleanType FileToImage(Image *,const char *filename) |
| 1064 | % |
| 1065 | % A description of each parameter follows: |
| 1066 | % |
| 1067 | % o image: the image. |
| 1068 | % |
| 1069 | % o filename: the filename. |
| 1070 | % |
| 1071 | */ |
| 1072 | |
| 1073 | static inline ssize_t WriteBlobStream(Image *image,const size_t length, |
| 1074 | const unsigned char *data) |
| 1075 | { |
| 1076 | MagickSizeType |
| 1077 | extent; |
| 1078 | |
| 1079 | register unsigned char |
| 1080 | *q; |
| 1081 | |
| 1082 | assert(image->blob != (BlobInfo *) NULL); |
| 1083 | if (image->blob->type != BlobStream) |
| 1084 | return(WriteBlob(image,length,data)); |
| 1085 | assert(image->blob->type != UndefinedStream); |
| 1086 | assert(data != (void *) NULL); |
| 1087 | extent=(MagickSizeType) (image->blob->offset+(MagickOffsetType) length); |
| 1088 | if (extent >= image->blob->extent) |
| 1089 | { |
| 1090 | image->blob->quantum<<=1; |
| 1091 | extent=image->blob->extent+image->blob->quantum+length; |
| 1092 | if (SetBlobExtent(image,extent) == MagickFalse) |
| 1093 | return(0); |
| 1094 | } |
| 1095 | q=image->blob->data+image->blob->offset; |
cristy | 54aad5e | 2010-09-03 16:02:04 +0000 | [diff] [blame] | 1096 | (void) memcpy(q,data,length); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1097 | image->blob->offset+=length; |
| 1098 | if (image->blob->offset >= (MagickOffsetType) image->blob->length) |
| 1099 | image->blob->length=(size_t) image->blob->offset; |
| 1100 | return((ssize_t) length); |
| 1101 | } |
| 1102 | |
cristy | c82a27b | 2011-10-21 01:07:16 +0000 | [diff] [blame] | 1103 | MagickExport MagickBooleanType FileToImage(Image *image,const char *filename, |
| 1104 | ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1105 | { |
| 1106 | int |
| 1107 | file; |
| 1108 | |
| 1109 | size_t |
| 1110 | length, |
| 1111 | quantum; |
| 1112 | |
| 1113 | ssize_t |
| 1114 | count; |
| 1115 | |
| 1116 | struct stat |
| 1117 | file_info; |
| 1118 | |
| 1119 | unsigned char |
| 1120 | *blob; |
| 1121 | |
| 1122 | assert(image != (const Image *) NULL); |
| 1123 | assert(image->signature == MagickSignature); |
| 1124 | assert(filename != (const char *) NULL); |
| 1125 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",filename); |
cristy | 18c6c27 | 2011-09-23 14:40:37 +0000 | [diff] [blame] | 1126 | file=open_utf8(filename,O_RDONLY | O_BINARY,0); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1127 | if (file == -1) |
| 1128 | { |
cristy | c82a27b | 2011-10-21 01:07:16 +0000 | [diff] [blame] | 1129 | ThrowFileException(exception,BlobError,"UnableToOpenBlob",filename); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1130 | return(MagickFalse); |
| 1131 | } |
| 1132 | quantum=(size_t) MagickMaxBufferExtent; |
| 1133 | if ((fstat(file,&file_info) == 0) && (file_info.st_size != 0)) |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 1134 | quantum=(size_t) MagickMin(file_info.st_size,MagickMaxBufferExtent); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1135 | blob=(unsigned char *) AcquireQuantumMemory(quantum,sizeof(*blob)); |
| 1136 | if (blob == (unsigned char *) NULL) |
| 1137 | { |
cristy | c82a27b | 2011-10-21 01:07:16 +0000 | [diff] [blame] | 1138 | ThrowFileException(exception,ResourceLimitError,"MemoryAllocationFailed", |
| 1139 | filename); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1140 | return(MagickFalse); |
| 1141 | } |
| 1142 | for ( ; ; ) |
| 1143 | { |
| 1144 | count=(ssize_t) read(file,blob,quantum); |
| 1145 | if (count <= 0) |
| 1146 | { |
| 1147 | count=0; |
| 1148 | if (errno != EINTR) |
| 1149 | break; |
| 1150 | } |
| 1151 | length=(size_t) count; |
| 1152 | count=WriteBlobStream(image,length,blob); |
| 1153 | if (count != (ssize_t) length) |
| 1154 | { |
cristy | c82a27b | 2011-10-21 01:07:16 +0000 | [diff] [blame] | 1155 | ThrowFileException(exception,BlobError,"UnableToWriteBlob",filename); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1156 | break; |
| 1157 | } |
| 1158 | } |
cristy | a7cb431 | 2010-06-26 00:47:03 +0000 | [diff] [blame] | 1159 | file=close(file); |
| 1160 | if (file == -1) |
cristy | c82a27b | 2011-10-21 01:07:16 +0000 | [diff] [blame] | 1161 | ThrowFileException(exception,BlobError,"UnableToWriteBlob",filename); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1162 | blob=(unsigned char *) RelinquishMagickMemory(blob); |
| 1163 | return(MagickTrue); |
| 1164 | } |
| 1165 | |
| 1166 | /* |
| 1167 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1168 | % % |
| 1169 | % % |
| 1170 | % % |
| 1171 | + G e t B l o b E r r o r % |
| 1172 | % % |
| 1173 | % % |
| 1174 | % % |
| 1175 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1176 | % |
| 1177 | % GetBlobError() returns MagickTrue if the blob associated with the specified |
| 1178 | % image encountered an error. |
| 1179 | % |
| 1180 | % The format of the GetBlobError method is: |
| 1181 | % |
| 1182 | % MagickBooleanType GetBlobError(const Image *image) |
| 1183 | % |
| 1184 | % A description of each parameter follows: |
| 1185 | % |
| 1186 | % o image: the image. |
| 1187 | % |
| 1188 | */ |
cristy | 7832dc2 | 2011-09-05 01:21:53 +0000 | [diff] [blame] | 1189 | MagickPrivate MagickBooleanType GetBlobError(const Image *image) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1190 | { |
| 1191 | assert(image != (const Image *) NULL); |
| 1192 | assert(image->signature == MagickSignature); |
| 1193 | if (image->debug != MagickFalse) |
| 1194 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1195 | return(image->blob->status); |
| 1196 | } |
| 1197 | |
| 1198 | /* |
| 1199 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1200 | % % |
| 1201 | % % |
| 1202 | % % |
| 1203 | + G e t B l o b F i l e H a n d l e % |
| 1204 | % % |
| 1205 | % % |
| 1206 | % % |
| 1207 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1208 | % |
| 1209 | % GetBlobFileHandle() returns the file handle associated with the image blob. |
| 1210 | % |
| 1211 | % The format of the GetBlobFile method is: |
| 1212 | % |
| 1213 | % FILE *GetBlobFileHandle(const Image *image) |
| 1214 | % |
| 1215 | % A description of each parameter follows: |
| 1216 | % |
| 1217 | % o image: the image. |
| 1218 | % |
| 1219 | */ |
| 1220 | MagickExport FILE *GetBlobFileHandle(const Image *image) |
| 1221 | { |
| 1222 | assert(image != (const Image *) NULL); |
| 1223 | assert(image->signature == MagickSignature); |
| 1224 | return(image->blob->file); |
| 1225 | } |
| 1226 | |
| 1227 | /* |
| 1228 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1229 | % % |
| 1230 | % % |
| 1231 | % % |
| 1232 | + G e t B l o b I n f o % |
| 1233 | % % |
| 1234 | % % |
| 1235 | % % |
| 1236 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1237 | % |
| 1238 | % GetBlobInfo() initializes the BlobInfo structure. |
| 1239 | % |
| 1240 | % The format of the GetBlobInfo method is: |
| 1241 | % |
| 1242 | % void GetBlobInfo(BlobInfo *blob_info) |
| 1243 | % |
| 1244 | % A description of each parameter follows: |
| 1245 | % |
| 1246 | % o blob_info: Specifies a pointer to a BlobInfo structure. |
| 1247 | % |
| 1248 | */ |
cristy | 7832dc2 | 2011-09-05 01:21:53 +0000 | [diff] [blame] | 1249 | MagickPrivate void GetBlobInfo(BlobInfo *blob_info) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1250 | { |
| 1251 | assert(blob_info != (BlobInfo *) NULL); |
| 1252 | (void) ResetMagickMemory(blob_info,0,sizeof(*blob_info)); |
| 1253 | blob_info->type=UndefinedStream; |
| 1254 | blob_info->quantum=(size_t) MagickMaxBlobExtent; |
| 1255 | blob_info->properties.st_mtime=time((time_t *) NULL); |
| 1256 | blob_info->properties.st_ctime=time((time_t *) NULL); |
| 1257 | blob_info->debug=IsEventLogging(); |
| 1258 | blob_info->reference_count=1; |
| 1259 | blob_info->semaphore=AllocateSemaphoreInfo(); |
| 1260 | blob_info->signature=MagickSignature; |
| 1261 | } |
| 1262 | |
| 1263 | /* |
| 1264 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1265 | % % |
| 1266 | % % |
| 1267 | % % |
| 1268 | % G e t B l o b P r o p e r t i e s % |
| 1269 | % % |
| 1270 | % % |
| 1271 | % % |
| 1272 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1273 | % |
| 1274 | % GetBlobProperties() returns information about an image blob. |
| 1275 | % |
| 1276 | % The format of the GetBlobProperties method is: |
| 1277 | % |
| 1278 | % const struct stat *GetBlobProperties(const Image *image) |
| 1279 | % |
| 1280 | % A description of each parameter follows: |
| 1281 | % |
| 1282 | % o image: the image. |
| 1283 | % |
| 1284 | */ |
cristy | 7832dc2 | 2011-09-05 01:21:53 +0000 | [diff] [blame] | 1285 | MagickPrivate const struct stat *GetBlobProperties(const Image *image) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1286 | { |
| 1287 | assert(image != (Image *) NULL); |
| 1288 | assert(image->signature == MagickSignature); |
| 1289 | if (image->debug != MagickFalse) |
| 1290 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1291 | return(&image->blob->properties); |
| 1292 | } |
| 1293 | |
| 1294 | /* |
| 1295 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1296 | % % |
| 1297 | % % |
| 1298 | % % |
| 1299 | + G e t B l o b S i z e % |
| 1300 | % % |
| 1301 | % % |
| 1302 | % % |
| 1303 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1304 | % |
| 1305 | % GetBlobSize() returns the current length of the image file or blob; zero is |
| 1306 | % returned if the size cannot be determined. |
| 1307 | % |
| 1308 | % The format of the GetBlobSize method is: |
| 1309 | % |
| 1310 | % MagickSizeType GetBlobSize(const Image *image) |
| 1311 | % |
| 1312 | % A description of each parameter follows: |
| 1313 | % |
| 1314 | % o image: the image. |
| 1315 | % |
| 1316 | */ |
| 1317 | MagickExport MagickSizeType GetBlobSize(const Image *image) |
| 1318 | { |
| 1319 | MagickSizeType |
cristy | 81b8ce5 | 2010-02-05 01:53:17 +0000 | [diff] [blame] | 1320 | extent; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1321 | |
| 1322 | assert(image != (Image *) NULL); |
| 1323 | assert(image->signature == MagickSignature); |
| 1324 | if (image->debug != MagickFalse) |
| 1325 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1326 | assert(image->blob != (BlobInfo *) NULL); |
cristy | 81b8ce5 | 2010-02-05 01:53:17 +0000 | [diff] [blame] | 1327 | extent=0; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1328 | switch (image->blob->type) |
| 1329 | { |
| 1330 | case UndefinedStream: |
| 1331 | { |
cristy | 81b8ce5 | 2010-02-05 01:53:17 +0000 | [diff] [blame] | 1332 | extent=image->blob->size; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1333 | break; |
| 1334 | } |
| 1335 | case FileStream: |
| 1336 | { |
| 1337 | if (fstat(fileno(image->blob->file),&image->blob->properties) == 0) |
cristy | 81b8ce5 | 2010-02-05 01:53:17 +0000 | [diff] [blame] | 1338 | extent=(MagickSizeType) image->blob->properties.st_size; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1339 | break; |
| 1340 | } |
| 1341 | case StandardStream: |
| 1342 | case PipeStream: |
| 1343 | { |
cristy | 81b8ce5 | 2010-02-05 01:53:17 +0000 | [diff] [blame] | 1344 | extent=image->blob->size; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1345 | break; |
| 1346 | } |
| 1347 | case ZipStream: |
| 1348 | case BZipStream: |
| 1349 | { |
| 1350 | MagickBooleanType |
| 1351 | status; |
| 1352 | |
| 1353 | status=GetPathAttributes(image->filename,&image->blob->properties); |
| 1354 | if (status != MagickFalse) |
cristy | 81b8ce5 | 2010-02-05 01:53:17 +0000 | [diff] [blame] | 1355 | extent=(MagickSizeType) image->blob->properties.st_size; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1356 | break; |
| 1357 | } |
| 1358 | case FifoStream: |
| 1359 | break; |
| 1360 | case BlobStream: |
| 1361 | { |
cristy | 891dc79 | 2010-03-04 01:47:16 +0000 | [diff] [blame] | 1362 | extent=(MagickSizeType) image->blob->length; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1363 | break; |
| 1364 | } |
| 1365 | } |
cristy | 81b8ce5 | 2010-02-05 01:53:17 +0000 | [diff] [blame] | 1366 | return(extent); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1367 | } |
| 1368 | |
| 1369 | /* |
| 1370 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1371 | % % |
| 1372 | % % |
| 1373 | % % |
| 1374 | + G e t B l o b S t r e a m D a t a % |
| 1375 | % % |
| 1376 | % % |
| 1377 | % % |
| 1378 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1379 | % |
| 1380 | % GetBlobStreamData() returns the stream data for the image. |
| 1381 | % |
| 1382 | % The format of the GetBlobStreamData method is: |
| 1383 | % |
| 1384 | % unsigned char *GetBlobStreamData(const Image *image) |
| 1385 | % |
| 1386 | % A description of each parameter follows: |
| 1387 | % |
| 1388 | % o image: the image. |
| 1389 | % |
| 1390 | */ |
| 1391 | MagickExport unsigned char *GetBlobStreamData(const Image *image) |
| 1392 | { |
| 1393 | assert(image != (const Image *) NULL); |
| 1394 | assert(image->signature == MagickSignature); |
| 1395 | return(image->blob->data); |
| 1396 | } |
| 1397 | |
| 1398 | /* |
| 1399 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1400 | % % |
| 1401 | % % |
| 1402 | % % |
| 1403 | + G e t B l o b S t r e a m H a n d l e r % |
| 1404 | % % |
| 1405 | % % |
| 1406 | % % |
| 1407 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1408 | % |
| 1409 | % GetBlobStreamHandler() returns the stream handler for the image. |
| 1410 | % |
| 1411 | % The format of the GetBlobStreamHandler method is: |
| 1412 | % |
| 1413 | % StreamHandler GetBlobStreamHandler(const Image *image) |
| 1414 | % |
| 1415 | % A description of each parameter follows: |
| 1416 | % |
| 1417 | % o image: the image. |
| 1418 | % |
| 1419 | */ |
cristy | 7832dc2 | 2011-09-05 01:21:53 +0000 | [diff] [blame] | 1420 | MagickPrivate StreamHandler GetBlobStreamHandler(const Image *image) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1421 | { |
| 1422 | assert(image != (const Image *) NULL); |
| 1423 | assert(image->signature == MagickSignature); |
| 1424 | if (image->debug != MagickFalse) |
| 1425 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1426 | return(image->blob->stream); |
| 1427 | } |
| 1428 | |
| 1429 | /* |
| 1430 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1431 | % % |
| 1432 | % % |
| 1433 | % % |
| 1434 | % I m a g e T o B l o b % |
| 1435 | % % |
| 1436 | % % |
| 1437 | % % |
| 1438 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1439 | % |
| 1440 | % ImageToBlob() implements direct to memory image formats. It returns the |
cristy | 1a1b562 | 2011-02-15 02:40:42 +0000 | [diff] [blame] | 1441 | % image as a formatted blob and its length. The magick member of the Image |
glennrp | fdd9aff | 2011-02-15 18:50:05 +0000 | [diff] [blame] | 1442 | % structure determines the format of the returned blob (GIF, JPEG, PNG, |
cristy | 1a1b562 | 2011-02-15 02:40:42 +0000 | [diff] [blame] | 1443 | % etc.). This method is the equivalent of WriteImage(), but writes the |
| 1444 | % formatted "file" to a memory buffer rather than to an actual file. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1445 | % |
| 1446 | % The format of the ImageToBlob method is: |
| 1447 | % |
| 1448 | % unsigned char *ImageToBlob(const ImageInfo *image_info,Image *image, |
| 1449 | % size_t *length,ExceptionInfo *exception) |
| 1450 | % |
| 1451 | % A description of each parameter follows: |
| 1452 | % |
| 1453 | % o image_info: the image info. |
| 1454 | % |
| 1455 | % o image: the image. |
| 1456 | % |
| 1457 | % o length: This pointer to a size_t integer sets the initial length of the |
| 1458 | % blob. On return, it reflects the actual length of the blob. |
| 1459 | % |
| 1460 | % o exception: return any errors or warnings in this structure. |
| 1461 | % |
| 1462 | */ |
| 1463 | MagickExport unsigned char *ImageToBlob(const ImageInfo *image_info, |
| 1464 | Image *image,size_t *length,ExceptionInfo *exception) |
| 1465 | { |
| 1466 | const MagickInfo |
| 1467 | *magick_info; |
| 1468 | |
| 1469 | ImageInfo |
| 1470 | *blob_info; |
| 1471 | |
| 1472 | MagickBooleanType |
| 1473 | status; |
| 1474 | |
| 1475 | unsigned char |
| 1476 | *blob; |
| 1477 | |
| 1478 | assert(image_info != (const ImageInfo *) NULL); |
| 1479 | assert(image_info->signature == MagickSignature); |
| 1480 | if (image_info->debug != MagickFalse) |
| 1481 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 1482 | image_info->filename); |
| 1483 | assert(image != (Image *) NULL); |
| 1484 | assert(image->signature == MagickSignature); |
| 1485 | assert(exception != (ExceptionInfo *) NULL); |
| 1486 | *length=0; |
| 1487 | blob=(unsigned char *) NULL; |
| 1488 | blob_info=CloneImageInfo(image_info); |
| 1489 | blob_info->adjoin=MagickFalse; |
cristy | d965a42 | 2010-03-03 17:47:35 +0000 | [diff] [blame] | 1490 | (void) SetImageInfo(blob_info,1,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1491 | if (*blob_info->magick != '\0') |
| 1492 | (void) CopyMagickString(image->magick,blob_info->magick,MaxTextExtent); |
| 1493 | magick_info=GetMagickInfo(image->magick,exception); |
| 1494 | if (magick_info == (const MagickInfo *) NULL) |
| 1495 | { |
| 1496 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 1497 | MissingDelegateError,"NoDecodeDelegateForThisImageFormat","`%s'", |
| 1498 | image->filename); |
| 1499 | return(blob); |
| 1500 | } |
| 1501 | (void) CopyMagickString(blob_info->magick,image->magick,MaxTextExtent); |
| 1502 | if (GetMagickBlobSupport(magick_info) != MagickFalse) |
| 1503 | { |
| 1504 | /* |
| 1505 | Native blob support for this image format. |
| 1506 | */ |
| 1507 | blob_info->length=0; |
| 1508 | blob_info->blob=(void *) AcquireQuantumMemory(MagickMaxBlobExtent, |
| 1509 | sizeof(unsigned char)); |
| 1510 | if (blob_info->blob == (void *) NULL) |
| 1511 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 1512 | ResourceLimitError,"MemoryAllocationFailed","`%s'",image->filename); |
| 1513 | else |
| 1514 | { |
| 1515 | (void) CloseBlob(image); |
| 1516 | image->blob->exempt=MagickTrue; |
| 1517 | *image->filename='\0'; |
cristy | 6f9e0d3 | 2011-08-28 16:32:09 +0000 | [diff] [blame] | 1518 | status=WriteImage(blob_info,image,exception); |
| 1519 | if ((status != MagickFalse) && (image->blob->length != 0)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1520 | { |
| 1521 | *length=image->blob->length; |
| 1522 | blob=DetachBlob(image->blob); |
| 1523 | blob=(unsigned char *) ResizeQuantumMemory(blob,*length, |
| 1524 | sizeof(*blob)); |
| 1525 | } |
| 1526 | } |
| 1527 | } |
| 1528 | else |
| 1529 | { |
| 1530 | char |
| 1531 | unique[MaxTextExtent]; |
| 1532 | |
| 1533 | int |
| 1534 | file; |
| 1535 | |
| 1536 | /* |
| 1537 | Write file to disk in blob image format. |
| 1538 | */ |
| 1539 | file=AcquireUniqueFileResource(unique); |
| 1540 | if (file == -1) |
| 1541 | { |
| 1542 | ThrowFileException(exception,BlobError,"UnableToWriteBlob", |
| 1543 | image_info->filename); |
| 1544 | } |
| 1545 | else |
| 1546 | { |
| 1547 | blob_info->file=fdopen(file,"wb"); |
| 1548 | if (blob_info->file != (FILE *) NULL) |
| 1549 | { |
cristy | b51dff5 | 2011-05-19 16:55:47 +0000 | [diff] [blame] | 1550 | (void) FormatLocaleString(image->filename,MaxTextExtent,"%s:%s", |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1551 | image->magick,unique); |
cristy | 6f9e0d3 | 2011-08-28 16:32:09 +0000 | [diff] [blame] | 1552 | status=WriteImage(blob_info,image,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1553 | (void) fclose(blob_info->file); |
cristy | 6f9e0d3 | 2011-08-28 16:32:09 +0000 | [diff] [blame] | 1554 | if (status != MagickFalse) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1555 | blob=FileToBlob(image->filename,~0UL,length,exception); |
| 1556 | } |
| 1557 | (void) RelinquishUniqueFileResource(unique); |
| 1558 | } |
| 1559 | } |
| 1560 | blob_info=DestroyImageInfo(blob_info); |
| 1561 | return(blob); |
| 1562 | } |
| 1563 | |
| 1564 | /* |
| 1565 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1566 | % % |
| 1567 | % % |
| 1568 | % % |
| 1569 | % I m a g e T o F i l e % |
| 1570 | % % |
| 1571 | % % |
| 1572 | % % |
| 1573 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1574 | % |
| 1575 | % ImageToFile() writes an image to a file. It returns MagickFalse if an error |
| 1576 | % occurs otherwise MagickTrue. |
| 1577 | % |
| 1578 | % The format of the ImageToFile method is: |
| 1579 | % |
| 1580 | % MagickBooleanType ImageToFile(Image *image,char *filename, |
| 1581 | % ExceptionInfo *exception) |
| 1582 | % |
| 1583 | % A description of each parameter follows: |
| 1584 | % |
| 1585 | % o image: the image. |
| 1586 | % |
| 1587 | % o filename: Write the image to this file. |
| 1588 | % |
| 1589 | % o exception: return any errors or warnings in this structure. |
| 1590 | % |
| 1591 | */ |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1592 | MagickExport MagickBooleanType ImageToFile(Image *image,char *filename, |
| 1593 | ExceptionInfo *exception) |
| 1594 | { |
| 1595 | int |
| 1596 | file; |
| 1597 | |
| 1598 | register const unsigned char |
| 1599 | *p; |
| 1600 | |
| 1601 | register size_t |
| 1602 | i; |
| 1603 | |
| 1604 | size_t |
| 1605 | length, |
| 1606 | quantum; |
| 1607 | |
| 1608 | ssize_t |
| 1609 | count; |
| 1610 | |
| 1611 | struct stat |
| 1612 | file_info; |
| 1613 | |
| 1614 | unsigned char |
| 1615 | *buffer; |
| 1616 | |
| 1617 | assert(image != (Image *) NULL); |
| 1618 | assert(image->signature == MagickSignature); |
| 1619 | assert(image->blob != (BlobInfo *) NULL); |
| 1620 | assert(image->blob->type != UndefinedStream); |
| 1621 | if (image->debug != MagickFalse) |
| 1622 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",filename); |
| 1623 | assert(filename != (const char *) NULL); |
| 1624 | if (*filename == '\0') |
| 1625 | file=AcquireUniqueFileResource(filename); |
| 1626 | else |
| 1627 | if (LocaleCompare(filename,"-") == 0) |
| 1628 | file=fileno(stdout); |
| 1629 | else |
cristy | 18c6c27 | 2011-09-23 14:40:37 +0000 | [diff] [blame] | 1630 | file=open_utf8(filename,O_RDWR | O_CREAT | O_EXCL | O_BINARY,S_MODE); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1631 | if (file == -1) |
| 1632 | { |
| 1633 | ThrowFileException(exception,BlobError,"UnableToWriteBlob",filename); |
| 1634 | return(MagickFalse); |
| 1635 | } |
| 1636 | quantum=(size_t) MagickMaxBufferExtent; |
| 1637 | if ((fstat(file,&file_info) == 0) && (file_info.st_size != 0)) |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 1638 | quantum=(size_t) MagickMin((MagickSizeType) file_info.st_size, |
| 1639 | MagickMaxBufferExtent); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1640 | buffer=(unsigned char *) AcquireQuantumMemory(quantum,sizeof(*buffer)); |
| 1641 | if (buffer == (unsigned char *) NULL) |
| 1642 | { |
| 1643 | file=close(file)-1; |
| 1644 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 1645 | ResourceLimitError,"MemoryAllocationError","`%s'",filename); |
| 1646 | return(MagickFalse); |
| 1647 | } |
| 1648 | length=0; |
| 1649 | p=ReadBlobStream(image,quantum,buffer,&count); |
| 1650 | for (i=0; count > 0; p=ReadBlobStream(image,quantum,buffer,&count)) |
| 1651 | { |
| 1652 | length=(size_t) count; |
| 1653 | for (i=0; i < length; i+=count) |
| 1654 | { |
| 1655 | count=write(file,p+i,(size_t) (length-i)); |
| 1656 | if (count <= 0) |
| 1657 | { |
| 1658 | count=0; |
| 1659 | if (errno != EINTR) |
| 1660 | break; |
| 1661 | } |
| 1662 | } |
| 1663 | if (i < length) |
| 1664 | break; |
| 1665 | } |
cristy | 5443963 | 2010-07-15 00:43:34 +0000 | [diff] [blame] | 1666 | if (LocaleCompare(filename,"-") != 0) |
| 1667 | file=close(file); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1668 | buffer=(unsigned char *) RelinquishMagickMemory(buffer); |
cristy | a7cb431 | 2010-06-26 00:47:03 +0000 | [diff] [blame] | 1669 | if ((file == -1) || (i < length)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1670 | { |
| 1671 | ThrowFileException(exception,BlobError,"UnableToWriteBlob",filename); |
| 1672 | return(MagickFalse); |
| 1673 | } |
| 1674 | return(MagickTrue); |
| 1675 | } |
| 1676 | |
| 1677 | /* |
| 1678 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1679 | % % |
| 1680 | % % |
| 1681 | % % |
| 1682 | % I m a g e s T o B l o b % |
| 1683 | % % |
| 1684 | % % |
| 1685 | % % |
| 1686 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1687 | % |
| 1688 | % ImagesToBlob() implements direct to memory image formats. It returns the |
| 1689 | % image sequence as a blob and its length. The magick member of the ImageInfo |
| 1690 | % structure determines the format of the returned blob (GIF, JPEG, PNG, etc.) |
| 1691 | % |
| 1692 | % Note, some image formats do not permit multiple images to the same image |
| 1693 | % stream (e.g. JPEG). in this instance, just the first image of the |
| 1694 | % sequence is returned as a blob. |
| 1695 | % |
| 1696 | % The format of the ImagesToBlob method is: |
| 1697 | % |
| 1698 | % unsigned char *ImagesToBlob(const ImageInfo *image_info,Image *images, |
| 1699 | % size_t *length,ExceptionInfo *exception) |
| 1700 | % |
| 1701 | % A description of each parameter follows: |
| 1702 | % |
| 1703 | % o image_info: the image info. |
| 1704 | % |
| 1705 | % o images: the image list. |
| 1706 | % |
| 1707 | % o length: This pointer to a size_t integer sets the initial length of the |
| 1708 | % blob. On return, it reflects the actual length of the blob. |
| 1709 | % |
| 1710 | % o exception: return any errors or warnings in this structure. |
| 1711 | % |
| 1712 | */ |
| 1713 | MagickExport unsigned char *ImagesToBlob(const ImageInfo *image_info, |
| 1714 | Image *images,size_t *length,ExceptionInfo *exception) |
| 1715 | { |
| 1716 | const MagickInfo |
| 1717 | *magick_info; |
| 1718 | |
| 1719 | ImageInfo |
| 1720 | *blob_info; |
| 1721 | |
| 1722 | MagickBooleanType |
| 1723 | status; |
| 1724 | |
| 1725 | unsigned char |
| 1726 | *blob; |
| 1727 | |
| 1728 | assert(image_info != (const ImageInfo *) NULL); |
| 1729 | assert(image_info->signature == MagickSignature); |
| 1730 | if (image_info->debug != MagickFalse) |
| 1731 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 1732 | image_info->filename); |
| 1733 | assert(images != (Image *) NULL); |
| 1734 | assert(images->signature == MagickSignature); |
| 1735 | assert(exception != (ExceptionInfo *) NULL); |
| 1736 | *length=0; |
| 1737 | blob=(unsigned char *) NULL; |
| 1738 | blob_info=CloneImageInfo(image_info); |
cristy | d965a42 | 2010-03-03 17:47:35 +0000 | [diff] [blame] | 1739 | (void) SetImageInfo(blob_info,(unsigned int) GetImageListLength(images), |
| 1740 | exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1741 | if (*blob_info->magick != '\0') |
| 1742 | (void) CopyMagickString(images->magick,blob_info->magick,MaxTextExtent); |
| 1743 | if (blob_info->adjoin == MagickFalse) |
| 1744 | { |
| 1745 | blob_info=DestroyImageInfo(blob_info); |
| 1746 | return(ImageToBlob(image_info,images,length,exception)); |
| 1747 | } |
| 1748 | magick_info=GetMagickInfo(images->magick,exception); |
| 1749 | if (magick_info == (const MagickInfo *) NULL) |
| 1750 | { |
| 1751 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 1752 | MissingDelegateError,"NoDecodeDelegateForThisImageFormat","`%s'", |
| 1753 | images->filename); |
| 1754 | return(blob); |
| 1755 | } |
| 1756 | (void) CopyMagickString(blob_info->magick,images->magick,MaxTextExtent); |
| 1757 | if (GetMagickBlobSupport(magick_info) != MagickFalse) |
| 1758 | { |
| 1759 | /* |
| 1760 | Native blob support for this images format. |
| 1761 | */ |
| 1762 | blob_info->length=0; |
| 1763 | blob_info->blob=(void *) AcquireQuantumMemory(MagickMaxBlobExtent, |
| 1764 | sizeof(unsigned char)); |
| 1765 | if (blob_info->blob == (void *) NULL) |
| 1766 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 1767 | ResourceLimitError,"MemoryAllocationFailed","`%s'",images->filename); |
| 1768 | else |
| 1769 | { |
| 1770 | images->blob->exempt=MagickTrue; |
| 1771 | *images->filename='\0'; |
| 1772 | status=WriteImages(blob_info,images,images->filename,exception); |
cristy | b24e240 | 2011-10-07 00:48:39 +0000 | [diff] [blame] | 1773 | if ((status != MagickFalse) && (images->blob->length != 0)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1774 | { |
| 1775 | *length=images->blob->length; |
| 1776 | blob=DetachBlob(images->blob); |
| 1777 | blob=(unsigned char *) ResizeQuantumMemory(blob,*length, |
| 1778 | sizeof(*blob)); |
| 1779 | } |
| 1780 | } |
| 1781 | } |
| 1782 | else |
| 1783 | { |
| 1784 | char |
| 1785 | filename[MaxTextExtent], |
| 1786 | unique[MaxTextExtent]; |
| 1787 | |
| 1788 | int |
| 1789 | file; |
| 1790 | |
| 1791 | /* |
| 1792 | Write file to disk in blob images format. |
| 1793 | */ |
| 1794 | file=AcquireUniqueFileResource(unique); |
| 1795 | if (file == -1) |
| 1796 | { |
| 1797 | ThrowFileException(exception,FileOpenError,"UnableToWriteBlob", |
| 1798 | image_info->filename); |
| 1799 | } |
| 1800 | else |
| 1801 | { |
| 1802 | blob_info->file=fdopen(file,"wb"); |
| 1803 | if (blob_info->file != (FILE *) NULL) |
| 1804 | { |
cristy | b51dff5 | 2011-05-19 16:55:47 +0000 | [diff] [blame] | 1805 | (void) FormatLocaleString(filename,MaxTextExtent,"%s:%s", |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1806 | images->magick,unique); |
| 1807 | status=WriteImages(blob_info,images,filename,exception); |
| 1808 | (void) fclose(blob_info->file); |
cristy | b24e240 | 2011-10-07 00:48:39 +0000 | [diff] [blame] | 1809 | if (status != MagickFalse) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1810 | blob=FileToBlob(images->filename,~0UL,length,exception); |
| 1811 | } |
| 1812 | (void) RelinquishUniqueFileResource(unique); |
| 1813 | } |
| 1814 | } |
| 1815 | blob_info=DestroyImageInfo(blob_info); |
| 1816 | return(blob); |
| 1817 | } |
| 1818 | /* |
| 1819 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1820 | % % |
| 1821 | % % |
| 1822 | % % |
| 1823 | % I n j e c t I m a g e B l o b % |
| 1824 | % % |
| 1825 | % % |
| 1826 | % % |
| 1827 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1828 | % |
| 1829 | % InjectImageBlob() injects the image with a copy of itself in the specified |
| 1830 | % format (e.g. inject JPEG into a PDF image). |
| 1831 | % |
| 1832 | % The format of the InjectImageBlob method is: |
| 1833 | % |
| 1834 | % MagickBooleanType InjectImageBlob(const ImageInfo *image_info, |
| 1835 | % Image *image,Image *inject_image,const char *format, |
| 1836 | % ExceptionInfo *exception) |
| 1837 | % |
| 1838 | % A description of each parameter follows: |
| 1839 | % |
| 1840 | % o image_info: the image info.. |
| 1841 | % |
| 1842 | % o image: the image. |
| 1843 | % |
| 1844 | % o inject_image: inject into the image stream. |
| 1845 | % |
| 1846 | % o format: the image format. |
| 1847 | % |
| 1848 | % o exception: return any errors or warnings in this structure. |
| 1849 | % |
| 1850 | */ |
| 1851 | MagickExport MagickBooleanType InjectImageBlob(const ImageInfo *image_info, |
| 1852 | Image *image,Image *inject_image,const char *format,ExceptionInfo *exception) |
| 1853 | { |
| 1854 | char |
| 1855 | filename[MaxTextExtent]; |
| 1856 | |
| 1857 | FILE |
| 1858 | *unique_file; |
| 1859 | |
| 1860 | Image |
| 1861 | *byte_image; |
| 1862 | |
| 1863 | ImageInfo |
| 1864 | *write_info; |
| 1865 | |
| 1866 | int |
| 1867 | file; |
| 1868 | |
| 1869 | MagickBooleanType |
| 1870 | status; |
| 1871 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1872 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1873 | i; |
| 1874 | |
| 1875 | size_t |
| 1876 | quantum; |
| 1877 | |
| 1878 | ssize_t |
| 1879 | count; |
| 1880 | |
| 1881 | struct stat |
| 1882 | file_info; |
| 1883 | |
| 1884 | unsigned char |
| 1885 | *buffer; |
| 1886 | |
| 1887 | /* |
| 1888 | Write inject image to a temporary file. |
| 1889 | */ |
| 1890 | assert(image_info != (ImageInfo *) NULL); |
| 1891 | assert(image_info->signature == MagickSignature); |
| 1892 | assert(image != (Image *) NULL); |
| 1893 | assert(image->signature == MagickSignature); |
| 1894 | if (image->debug != MagickFalse) |
| 1895 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1896 | assert(inject_image != (Image *) NULL); |
| 1897 | assert(inject_image->signature == MagickSignature); |
| 1898 | assert(exception != (ExceptionInfo *) NULL); |
| 1899 | unique_file=(FILE *) NULL; |
| 1900 | file=AcquireUniqueFileResource(filename); |
| 1901 | if (file != -1) |
| 1902 | unique_file=fdopen(file,"wb"); |
| 1903 | if ((file == -1) || (unique_file == (FILE *) NULL)) |
| 1904 | { |
| 1905 | (void) CopyMagickString(image->filename,filename,MaxTextExtent); |
| 1906 | ThrowFileException(exception,FileOpenError,"UnableToCreateTemporaryFile", |
| 1907 | image->filename); |
| 1908 | return(MagickFalse); |
| 1909 | } |
| 1910 | byte_image=CloneImage(inject_image,0,0,MagickFalse,exception); |
| 1911 | if (byte_image == (Image *) NULL) |
| 1912 | { |
| 1913 | (void) fclose(unique_file); |
| 1914 | (void) RelinquishUniqueFileResource(filename); |
| 1915 | return(MagickFalse); |
| 1916 | } |
cristy | b51dff5 | 2011-05-19 16:55:47 +0000 | [diff] [blame] | 1917 | (void) FormatLocaleString(byte_image->filename,MaxTextExtent,"%s:%s",format, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1918 | filename); |
| 1919 | DestroyBlob(byte_image); |
| 1920 | byte_image->blob=CloneBlobInfo((BlobInfo *) NULL); |
| 1921 | write_info=CloneImageInfo(image_info); |
| 1922 | SetImageInfoFile(write_info,unique_file); |
cristy | 6f9e0d3 | 2011-08-28 16:32:09 +0000 | [diff] [blame] | 1923 | status=WriteImage(write_info,byte_image,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1924 | write_info=DestroyImageInfo(write_info); |
| 1925 | byte_image=DestroyImage(byte_image); |
| 1926 | (void) fclose(unique_file); |
| 1927 | if (status == MagickFalse) |
| 1928 | { |
| 1929 | (void) RelinquishUniqueFileResource(filename); |
| 1930 | return(MagickFalse); |
| 1931 | } |
| 1932 | /* |
| 1933 | Inject into image stream. |
| 1934 | */ |
cristy | 18c6c27 | 2011-09-23 14:40:37 +0000 | [diff] [blame] | 1935 | file=open_utf8(filename,O_RDONLY | O_BINARY,0); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1936 | if (file == -1) |
| 1937 | { |
| 1938 | (void) RelinquishUniqueFileResource(filename); |
| 1939 | ThrowFileException(exception,FileOpenError,"UnableToOpenFile", |
| 1940 | image_info->filename); |
| 1941 | return(MagickFalse); |
| 1942 | } |
| 1943 | quantum=(size_t) MagickMaxBufferExtent; |
| 1944 | if ((fstat(file,&file_info) == 0) && (file_info.st_size != 0)) |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 1945 | quantum=(size_t) MagickMin(file_info.st_size,MagickMaxBufferExtent); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1946 | buffer=(unsigned char *) AcquireQuantumMemory(quantum,sizeof(*buffer)); |
| 1947 | if (buffer == (unsigned char *) NULL) |
| 1948 | { |
| 1949 | (void) RelinquishUniqueFileResource(filename); |
| 1950 | ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed", |
| 1951 | image->filename); |
| 1952 | } |
| 1953 | for (i=0; ; i+=count) |
| 1954 | { |
| 1955 | count=(ssize_t) read(file,buffer,quantum); |
| 1956 | if (count <= 0) |
| 1957 | { |
| 1958 | count=0; |
| 1959 | if (errno != EINTR) |
| 1960 | break; |
| 1961 | } |
| 1962 | status=WriteBlobStream(image,(size_t) count,buffer) == count ? MagickTrue : |
| 1963 | MagickFalse; |
| 1964 | } |
cristy | a7cb431 | 2010-06-26 00:47:03 +0000 | [diff] [blame] | 1965 | file=close(file); |
| 1966 | if (file == -1) |
| 1967 | ThrowFileException(exception,FileOpenError,"UnableToWriteBlob",filename); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1968 | (void) RelinquishUniqueFileResource(filename); |
| 1969 | buffer=(unsigned char *) RelinquishMagickMemory(buffer); |
| 1970 | return(status); |
| 1971 | } |
| 1972 | |
| 1973 | /* |
| 1974 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1975 | % % |
| 1976 | % % |
| 1977 | % % |
| 1978 | + I s B l o b E x e m p t % |
| 1979 | % % |
| 1980 | % % |
| 1981 | % % |
| 1982 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1983 | % |
| 1984 | % IsBlobExempt() returns true if the blob is exempt. |
| 1985 | % |
| 1986 | % The format of the IsBlobExempt method is: |
| 1987 | % |
| 1988 | % MagickBooleanType IsBlobExempt(const Image *image) |
| 1989 | % |
| 1990 | % A description of each parameter follows: |
| 1991 | % |
| 1992 | % o image: the image. |
| 1993 | % |
| 1994 | */ |
cristy | 7832dc2 | 2011-09-05 01:21:53 +0000 | [diff] [blame] | 1995 | MagickPrivate MagickBooleanType IsBlobExempt(const Image *image) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1996 | { |
| 1997 | assert(image != (const Image *) NULL); |
| 1998 | assert(image->signature == MagickSignature); |
| 1999 | if (image->debug != MagickFalse) |
| 2000 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2001 | return(image->blob->exempt); |
| 2002 | } |
| 2003 | |
| 2004 | /* |
| 2005 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2006 | % % |
| 2007 | % % |
| 2008 | % % |
| 2009 | + I s B l o b S e e k a b l e % |
| 2010 | % % |
| 2011 | % % |
| 2012 | % % |
| 2013 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2014 | % |
| 2015 | % IsBlobSeekable() returns true if the blob is seekable. |
| 2016 | % |
| 2017 | % The format of the IsBlobSeekable method is: |
| 2018 | % |
| 2019 | % MagickBooleanType IsBlobSeekable(const Image *image) |
| 2020 | % |
| 2021 | % A description of each parameter follows: |
| 2022 | % |
| 2023 | % o image: the image. |
| 2024 | % |
| 2025 | */ |
cristy | 7832dc2 | 2011-09-05 01:21:53 +0000 | [diff] [blame] | 2026 | MagickPrivate MagickBooleanType IsBlobSeekable(const Image *image) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2027 | { |
| 2028 | MagickBooleanType |
| 2029 | seekable; |
| 2030 | |
| 2031 | assert(image != (const Image *) NULL); |
| 2032 | assert(image->signature == MagickSignature); |
| 2033 | if (image->debug != MagickFalse) |
| 2034 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2035 | seekable=(image->blob->type == FileStream) || |
| 2036 | (image->blob->type == BlobStream) ? MagickTrue : MagickFalse; |
| 2037 | return(seekable); |
| 2038 | } |
| 2039 | |
| 2040 | /* |
| 2041 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2042 | % % |
| 2043 | % % |
| 2044 | % % |
| 2045 | + I s B l o b T e m p o r a r y % |
| 2046 | % % |
| 2047 | % % |
| 2048 | % % |
| 2049 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2050 | % |
| 2051 | % IsBlobTemporary() returns true if the blob is temporary. |
| 2052 | % |
| 2053 | % The format of the IsBlobTemporary method is: |
| 2054 | % |
| 2055 | % MagickBooleanType IsBlobTemporary(const Image *image) |
| 2056 | % |
| 2057 | % A description of each parameter follows: |
| 2058 | % |
| 2059 | % o image: the image. |
| 2060 | % |
| 2061 | */ |
cristy | 7832dc2 | 2011-09-05 01:21:53 +0000 | [diff] [blame] | 2062 | MagickPrivate MagickBooleanType IsBlobTemporary(const Image *image) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2063 | { |
| 2064 | assert(image != (const Image *) NULL); |
| 2065 | assert(image->signature == MagickSignature); |
| 2066 | if (image->debug != MagickFalse) |
| 2067 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2068 | return(image->blob->temporary); |
| 2069 | } |
| 2070 | |
| 2071 | /* |
| 2072 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2073 | % % |
| 2074 | % % |
| 2075 | % % |
| 2076 | + M a p B l o b % |
| 2077 | % % |
| 2078 | % % |
| 2079 | % % |
| 2080 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2081 | % |
| 2082 | % MapBlob() creates a mapping from a file to a binary large object. |
| 2083 | % |
| 2084 | % The format of the MapBlob method is: |
| 2085 | % |
| 2086 | % unsigned char *MapBlob(int file,const MapMode mode, |
| 2087 | % const MagickOffsetType offset,const size_t length) |
| 2088 | % |
| 2089 | % A description of each parameter follows: |
| 2090 | % |
| 2091 | % o file: map this file descriptor. |
| 2092 | % |
| 2093 | % o mode: ReadMode, WriteMode, or IOMode. |
| 2094 | % |
| 2095 | % o offset: starting at this offset within the file. |
| 2096 | % |
| 2097 | % o length: the length of the mapping is returned in this pointer. |
| 2098 | % |
| 2099 | */ |
| 2100 | MagickExport unsigned char *MapBlob(int file,const MapMode mode, |
| 2101 | const MagickOffsetType offset,const size_t length) |
| 2102 | { |
| 2103 | #if defined(MAGICKCORE_HAVE_MMAP_FILEIO) |
| 2104 | int |
| 2105 | flags, |
| 2106 | protection; |
| 2107 | |
| 2108 | unsigned char |
| 2109 | *map; |
| 2110 | |
| 2111 | /* |
| 2112 | Map file. |
| 2113 | */ |
| 2114 | flags=0; |
| 2115 | if (file == -1) |
| 2116 | #if defined(MAP_ANONYMOUS) |
| 2117 | flags|=MAP_ANONYMOUS; |
| 2118 | #else |
| 2119 | return((unsigned char *) NULL); |
| 2120 | #endif |
| 2121 | switch (mode) |
| 2122 | { |
| 2123 | case ReadMode: |
| 2124 | default: |
| 2125 | { |
| 2126 | protection=PROT_READ; |
| 2127 | flags|=MAP_PRIVATE; |
| 2128 | map=(unsigned char *) mmap((char *) NULL,length,protection,flags,file, |
| 2129 | (off_t) offset); |
| 2130 | break; |
| 2131 | } |
| 2132 | case WriteMode: |
| 2133 | { |
| 2134 | protection=PROT_WRITE; |
| 2135 | flags|=MAP_SHARED; |
| 2136 | map=(unsigned char *) mmap((char *) NULL,length,protection,flags,file, |
| 2137 | (off_t) offset); |
cristy | 2a9e7cb | 2010-03-05 02:15:05 +0000 | [diff] [blame] | 2138 | #if defined(MAGICKCORE_HAVE_POSIX_MADVISE) |
| 2139 | (void) posix_madvise(map,length,POSIX_MADV_SEQUENTIAL | |
| 2140 | POSIX_MADV_WILLNEED); |
| 2141 | #endif |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2142 | break; |
| 2143 | } |
| 2144 | case IOMode: |
| 2145 | { |
| 2146 | protection=PROT_READ | PROT_WRITE; |
| 2147 | flags|=MAP_SHARED; |
| 2148 | map=(unsigned char *) mmap((char *) NULL,length,protection,flags,file, |
| 2149 | (off_t) offset); |
| 2150 | break; |
| 2151 | } |
| 2152 | } |
| 2153 | if (map == (unsigned char *) MAP_FAILED) |
| 2154 | return((unsigned char *) NULL); |
| 2155 | return(map); |
| 2156 | #else |
| 2157 | (void) file; |
| 2158 | (void) mode; |
| 2159 | (void) offset; |
| 2160 | (void) length; |
| 2161 | return((unsigned char *) NULL); |
| 2162 | #endif |
| 2163 | } |
| 2164 | |
| 2165 | /* |
| 2166 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2167 | % % |
| 2168 | % % |
| 2169 | % % |
| 2170 | + M S B O r d e r L o n g % |
| 2171 | % % |
| 2172 | % % |
| 2173 | % % |
| 2174 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2175 | % |
| 2176 | % MSBOrderLong() converts a least-significant byte first buffer of integers to |
| 2177 | % most-significant byte first. |
| 2178 | % |
| 2179 | % The format of the MSBOrderLong method is: |
| 2180 | % |
| 2181 | % void MSBOrderLong(unsigned char *buffer,const size_t length) |
| 2182 | % |
| 2183 | % A description of each parameter follows. |
| 2184 | % |
| 2185 | % o buffer: Specifies a pointer to a buffer of integers. |
| 2186 | % |
| 2187 | % o length: Specifies the length of the buffer. |
| 2188 | % |
| 2189 | */ |
| 2190 | MagickExport void MSBOrderLong(unsigned char *buffer,const size_t length) |
| 2191 | { |
| 2192 | int |
| 2193 | c; |
| 2194 | |
| 2195 | register unsigned char |
| 2196 | *p, |
| 2197 | *q; |
| 2198 | |
| 2199 | assert(buffer != (unsigned char *) NULL); |
| 2200 | q=buffer+length; |
| 2201 | while (buffer < q) |
| 2202 | { |
| 2203 | p=buffer+3; |
| 2204 | c=(int) (*p); |
| 2205 | *p=(*buffer); |
| 2206 | *buffer++=(unsigned char) c; |
| 2207 | p=buffer+1; |
| 2208 | c=(int) (*p); |
| 2209 | *p=(*buffer); |
| 2210 | *buffer++=(unsigned char) c; |
| 2211 | buffer+=2; |
| 2212 | } |
| 2213 | } |
| 2214 | |
| 2215 | /* |
| 2216 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2217 | % % |
| 2218 | % % |
| 2219 | % % |
| 2220 | + M S B O r d e r S h o r t % |
| 2221 | % % |
| 2222 | % % |
| 2223 | % % |
| 2224 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2225 | % |
| 2226 | % MSBOrderShort() converts a least-significant byte first buffer of integers |
| 2227 | % to most-significant byte first. |
| 2228 | % |
| 2229 | % The format of the MSBOrderShort method is: |
| 2230 | % |
| 2231 | % void MSBOrderShort(unsigned char *p,const size_t length) |
| 2232 | % |
| 2233 | % A description of each parameter follows. |
| 2234 | % |
| 2235 | % o p: Specifies a pointer to a buffer of integers. |
| 2236 | % |
| 2237 | % o length: Specifies the length of the buffer. |
| 2238 | % |
| 2239 | */ |
| 2240 | MagickExport void MSBOrderShort(unsigned char *p,const size_t length) |
| 2241 | { |
| 2242 | int |
| 2243 | c; |
| 2244 | |
| 2245 | register unsigned char |
| 2246 | *q; |
| 2247 | |
| 2248 | assert(p != (unsigned char *) NULL); |
| 2249 | q=p+length; |
| 2250 | while (p < q) |
| 2251 | { |
| 2252 | c=(int) (*p); |
| 2253 | *p=(*(p+1)); |
| 2254 | p++; |
| 2255 | *p++=(unsigned char) c; |
| 2256 | } |
| 2257 | } |
| 2258 | |
| 2259 | /* |
| 2260 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2261 | % % |
| 2262 | % % |
| 2263 | % % |
| 2264 | + O p e n B l o b % |
| 2265 | % % |
| 2266 | % % |
| 2267 | % % |
| 2268 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2269 | % |
| 2270 | % OpenBlob() opens a file associated with the image. A file name of '-' sets |
| 2271 | % the file to stdin for type 'r' and stdout for type 'w'. If the filename |
| 2272 | % suffix is '.gz' or '.Z', the image is decompressed for type 'r' and |
| 2273 | % compressed for type 'w'. If the filename prefix is '|', it is piped to or |
| 2274 | % from a system command. |
| 2275 | % |
| 2276 | % The format of the OpenBlob method is: |
| 2277 | % |
| 2278 | % MagickBooleanType OpenBlob(const ImageInfo *image_info,Image *image, |
| 2279 | % const BlobMode mode,ExceptionInfo *exception) |
| 2280 | % |
| 2281 | % A description of each parameter follows: |
| 2282 | % |
| 2283 | % o image_info: the image info. |
| 2284 | % |
| 2285 | % o image: the image. |
| 2286 | % |
| 2287 | % o mode: the mode for opening the file. |
| 2288 | % |
| 2289 | */ |
| 2290 | MagickExport MagickBooleanType OpenBlob(const ImageInfo *image_info, |
| 2291 | Image *image,const BlobMode mode,ExceptionInfo *exception) |
| 2292 | { |
| 2293 | char |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2294 | extension[MaxTextExtent], |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2295 | filename[MaxTextExtent]; |
| 2296 | |
| 2297 | const char |
| 2298 | *type; |
| 2299 | |
| 2300 | MagickBooleanType |
| 2301 | status; |
| 2302 | |
| 2303 | PolicyRights |
| 2304 | rights; |
| 2305 | |
| 2306 | assert(image_info != (ImageInfo *) NULL); |
| 2307 | assert(image_info->signature == MagickSignature); |
| 2308 | if (image_info->debug != MagickFalse) |
| 2309 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 2310 | image_info->filename); |
| 2311 | assert(image != (Image *) NULL); |
| 2312 | assert(image->signature == MagickSignature); |
| 2313 | if (image_info->blob != (void *) NULL) |
| 2314 | { |
| 2315 | if (image_info->stream != (StreamHandler) NULL) |
| 2316 | image->blob->stream=(StreamHandler) image_info->stream; |
| 2317 | AttachBlob(image->blob,image_info->blob,image_info->length); |
| 2318 | return(MagickTrue); |
| 2319 | } |
| 2320 | (void) DetachBlob(image->blob); |
| 2321 | switch (mode) |
| 2322 | { |
| 2323 | default: type="r"; break; |
| 2324 | case ReadBlobMode: type="r"; break; |
| 2325 | case ReadBinaryBlobMode: type="rb"; break; |
| 2326 | case WriteBlobMode: type="w"; break; |
| 2327 | case WriteBinaryBlobMode: type="w+b"; break; |
| 2328 | case AppendBlobMode: type="a"; break; |
| 2329 | case AppendBinaryBlobMode: type="a+b"; break; |
| 2330 | } |
| 2331 | if (*type != 'r') |
| 2332 | image->blob->synchronize=image_info->synchronize; |
| 2333 | if (image_info->stream != (StreamHandler) NULL) |
| 2334 | { |
| 2335 | image->blob->stream=(StreamHandler) image_info->stream; |
| 2336 | if (*type == 'w') |
| 2337 | { |
| 2338 | image->blob->type=FifoStream; |
| 2339 | return(MagickTrue); |
| 2340 | } |
| 2341 | } |
| 2342 | /* |
| 2343 | Open image file. |
| 2344 | */ |
| 2345 | *filename='\0'; |
| 2346 | (void) CopyMagickString(filename,image->filename,MaxTextExtent); |
| 2347 | rights=ReadPolicyRights; |
| 2348 | if (*type == 'w') |
| 2349 | rights=WritePolicyRights; |
| 2350 | if (IsRightsAuthorized(PathPolicyDomain,rights,filename) == MagickFalse) |
| 2351 | { |
cristy | a9197f6 | 2010-01-12 02:23:34 +0000 | [diff] [blame] | 2352 | errno=EPERM; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2353 | (void) ThrowMagickException(exception,GetMagickModule(),PolicyError, |
| 2354 | "NotAuthorized","`%s'",filename); |
| 2355 | return(MagickFalse); |
| 2356 | } |
| 2357 | if ((LocaleCompare(filename,"-") == 0) || |
| 2358 | ((*filename == '\0') && (image_info->file == (FILE *) NULL))) |
| 2359 | { |
| 2360 | image->blob->file=(*type == 'r') ? stdin : stdout; |
cristy | 0157aea | 2010-04-24 21:12:18 +0000 | [diff] [blame] | 2361 | #if defined(MAGICKCORE_WINDOWS_SUPPORT) || defined(__OS2__) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2362 | if (strchr(type,'b') != (char *) NULL) |
| 2363 | setmode(_fileno(image->blob->file),_O_BINARY); |
| 2364 | #endif |
| 2365 | image->blob->type=StandardStream; |
| 2366 | image->blob->exempt=MagickTrue; |
| 2367 | return(MagickTrue); |
| 2368 | } |
| 2369 | if (LocaleNCompare(filename,"fd:",3) == 0) |
| 2370 | { |
| 2371 | char |
| 2372 | mode[MaxTextExtent]; |
| 2373 | |
| 2374 | *mode=(*type); |
| 2375 | mode[1]='\0'; |
cristy | f2f2727 | 2009-12-17 14:48:46 +0000 | [diff] [blame] | 2376 | image->blob->file=fdopen(StringToLong(filename+3),mode); |
cristy | 0157aea | 2010-04-24 21:12:18 +0000 | [diff] [blame] | 2377 | #if defined(MAGICKCORE_WINDOWS_SUPPORT) || defined(__OS2__) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2378 | if (strchr(type,'b') != (char *) NULL) |
| 2379 | setmode(_fileno(image->blob->file),_O_BINARY); |
| 2380 | #endif |
| 2381 | image->blob->type=StandardStream; |
| 2382 | image->blob->exempt=MagickTrue; |
| 2383 | return(MagickTrue); |
| 2384 | } |
| 2385 | #if defined(MAGICKCORE_HAVE_POPEN) |
| 2386 | if (*filename == '|') |
| 2387 | { |
| 2388 | char |
| 2389 | mode[MaxTextExtent]; |
| 2390 | |
| 2391 | /* |
| 2392 | Pipe image to or from a system command. |
| 2393 | */ |
| 2394 | #if defined(SIGPIPE) |
| 2395 | if (*type == 'w') |
| 2396 | (void) signal(SIGPIPE,SIG_IGN); |
| 2397 | #endif |
| 2398 | *mode=(*type); |
| 2399 | mode[1]='\0'; |
cristy | 18c6c27 | 2011-09-23 14:40:37 +0000 | [diff] [blame] | 2400 | image->blob->file=(FILE *) popen_utf8(filename+1,mode); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2401 | if (image->blob->file == (FILE *) NULL) |
| 2402 | { |
| 2403 | ThrowFileException(exception,BlobError,"UnableToOpenBlob",filename); |
| 2404 | return(MagickFalse); |
| 2405 | } |
| 2406 | image->blob->type=PipeStream; |
| 2407 | image->blob->exempt=MagickTrue; |
| 2408 | return(MagickTrue); |
| 2409 | } |
| 2410 | #endif |
| 2411 | status=GetPathAttributes(filename,&image->blob->properties); |
| 2412 | #if defined(S_ISFIFO) |
| 2413 | if ((status == MagickTrue) && S_ISFIFO(image->blob->properties.st_mode)) |
| 2414 | { |
cristy | 18c6c27 | 2011-09-23 14:40:37 +0000 | [diff] [blame] | 2415 | image->blob->file=(FILE *) fopen_utf8(filename,type); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2416 | if (image->blob->file == (FILE *) NULL) |
| 2417 | { |
| 2418 | ThrowFileException(exception,BlobError,"UnableToOpenBlob",filename); |
| 2419 | return(MagickFalse); |
| 2420 | } |
| 2421 | image->blob->type=FileStream; |
| 2422 | image->blob->exempt=MagickTrue; |
| 2423 | return(MagickTrue); |
| 2424 | } |
| 2425 | #endif |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2426 | GetPathComponent(image->filename,ExtensionPath,extension); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2427 | if (*type == 'w') |
| 2428 | { |
cristy | e8939e7 | 2010-02-03 17:05:25 +0000 | [diff] [blame] | 2429 | (void) CopyMagickString(filename,image->filename,MaxTextExtent); |
cristy | b9e3136 | 2010-04-22 16:38:17 +0000 | [diff] [blame] | 2430 | if ((image_info->adjoin == MagickFalse) || |
cristy | 7f22306 | 2011-03-12 01:37:20 +0000 | [diff] [blame] | 2431 | (strchr(filename,'%') != (char *) NULL)) |
cristy | e8939e7 | 2010-02-03 17:05:25 +0000 | [diff] [blame] | 2432 | { |
| 2433 | /* |
| 2434 | Form filename for multi-part images. |
| 2435 | */ |
| 2436 | (void) InterpretImageFilename(image_info,image,image->filename,(int) |
cristy | 6fccee1 | 2011-10-20 18:43:18 +0000 | [diff] [blame] | 2437 | image->scene,filename,exception); |
cristy | 498cab9 | 2010-02-09 17:08:05 +0000 | [diff] [blame] | 2438 | if ((LocaleCompare(filename,image->filename) == 0) && |
| 2439 | ((GetPreviousImageInList(image) != (Image *) NULL) || |
| 2440 | (GetNextImageInList(image) != (Image *) NULL))) |
cristy | e8939e7 | 2010-02-03 17:05:25 +0000 | [diff] [blame] | 2441 | { |
cristy | bf7fa0d | 2010-02-04 00:51:10 +0000 | [diff] [blame] | 2442 | char |
cristy | bf7fa0d | 2010-02-04 00:51:10 +0000 | [diff] [blame] | 2443 | path[MaxTextExtent]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2444 | |
cristy | bf7fa0d | 2010-02-04 00:51:10 +0000 | [diff] [blame] | 2445 | GetPathComponent(image->filename,RootPath,path); |
cristy | bf7fa0d | 2010-02-04 00:51:10 +0000 | [diff] [blame] | 2446 | if (*extension == '\0') |
cristy | b51dff5 | 2011-05-19 16:55:47 +0000 | [diff] [blame] | 2447 | (void) FormatLocaleString(filename,MaxTextExtent,"%s-%.20g", |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 2448 | path,(double) image->scene); |
cristy | bf7fa0d | 2010-02-04 00:51:10 +0000 | [diff] [blame] | 2449 | else |
cristy | b51dff5 | 2011-05-19 16:55:47 +0000 | [diff] [blame] | 2450 | (void) FormatLocaleString(filename,MaxTextExtent,"%s-%.20g.%s", |
cristy | 9e1d53f | 2010-12-16 13:44:43 +0000 | [diff] [blame] | 2451 | path,(double) image->scene,extension); |
cristy | e8939e7 | 2010-02-03 17:05:25 +0000 | [diff] [blame] | 2452 | } |
| 2453 | (void) CopyMagickString(image->filename,filename,MaxTextExtent); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2454 | #if defined(macintosh) |
cristy | e8939e7 | 2010-02-03 17:05:25 +0000 | [diff] [blame] | 2455 | SetApplicationType(filename,image_info->magick,'8BIM'); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2456 | #endif |
cristy | e8939e7 | 2010-02-03 17:05:25 +0000 | [diff] [blame] | 2457 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2458 | } |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2459 | if (image_info->file != (FILE *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2460 | { |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2461 | image->blob->file=image_info->file; |
| 2462 | image->blob->type=FileStream; |
| 2463 | image->blob->exempt=MagickTrue; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2464 | } |
| 2465 | else |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2466 | if (*type == 'r') |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2467 | { |
cristy | 18c6c27 | 2011-09-23 14:40:37 +0000 | [diff] [blame] | 2468 | image->blob->file=(FILE *) fopen_utf8(filename,type); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2469 | if (image->blob->file != (FILE *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2470 | { |
| 2471 | size_t |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2472 | count; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2473 | |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2474 | unsigned char |
| 2475 | magick[3]; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2476 | |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2477 | image->blob->type=FileStream; |
| 2478 | #if defined(MAGICKCORE_HAVE_SETVBUF) |
cristy | f55846d | 2010-09-17 19:01:10 +0000 | [diff] [blame] | 2479 | (void) setvbuf(image->blob->file,(char *) NULL,(int) _IOFBF,16384); |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2480 | #endif |
| 2481 | (void) ResetMagickMemory(magick,0,sizeof(magick)); |
| 2482 | count=fread(magick,1,sizeof(magick),image->blob->file); |
| 2483 | (void) rewind(image->blob->file); |
| 2484 | (void) LogMagickEvent(BlobEvent,GetMagickModule(), |
| 2485 | " read %.20g magic header bytes",(double) count); |
| 2486 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
| 2487 | if (((int) magick[0] == 0x1F) && ((int) magick[1] == 0x8B) && |
| 2488 | ((int) magick[2] == 0x08)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2489 | { |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2490 | (void) fclose(image->blob->file); |
cristy | 43552ad | 2012-01-31 14:42:42 +0000 | [diff] [blame^] | 2491 | image->blob->gzfile=gzopen(filename,type); |
| 2492 | if (image->blob->gzfile != (gzFile) NULL) |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2493 | image->blob->type=ZipStream; |
| 2494 | } |
| 2495 | #endif |
| 2496 | #if defined(MAGICKCORE_BZLIB_DELEGATE) |
| 2497 | if (strncmp((char *) magick,"BZh",3) == 0) |
| 2498 | { |
| 2499 | (void) fclose(image->blob->file); |
cristy | 43552ad | 2012-01-31 14:42:42 +0000 | [diff] [blame^] | 2500 | image->blob->bzfile=BZ2_bzopen(filename,type); |
| 2501 | if (image->blob->bzfile != (BZFILE *) NULL) |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2502 | image->blob->type=BZipStream; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2503 | } |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2504 | #endif |
cristy | c6c589d | 2010-07-06 01:34:57 +0000 | [diff] [blame] | 2505 | if (image->blob->type == FileStream) |
| 2506 | { |
| 2507 | const MagickInfo |
| 2508 | *magick_info; |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2509 | |
cristy | c6c589d | 2010-07-06 01:34:57 +0000 | [diff] [blame] | 2510 | ExceptionInfo |
| 2511 | *sans_exception; |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2512 | |
cristy | c6c589d | 2010-07-06 01:34:57 +0000 | [diff] [blame] | 2513 | struct stat |
| 2514 | *properties; |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2515 | |
cristy | c6c589d | 2010-07-06 01:34:57 +0000 | [diff] [blame] | 2516 | sans_exception=AcquireExceptionInfo(); |
| 2517 | magick_info=GetMagickInfo(image_info->magick,sans_exception); |
| 2518 | sans_exception=DestroyExceptionInfo(sans_exception); |
| 2519 | properties=(&image->blob->properties); |
| 2520 | if ((magick_info != (const MagickInfo *) NULL) && |
| 2521 | (GetMagickBlobSupport(magick_info) != MagickFalse) && |
| 2522 | (properties->st_size <= MagickMaxBufferExtent)) |
| 2523 | { |
| 2524 | size_t |
| 2525 | length; |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2526 | |
cristy | c6c589d | 2010-07-06 01:34:57 +0000 | [diff] [blame] | 2527 | void |
| 2528 | *blob; |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2529 | |
cristy | c6c589d | 2010-07-06 01:34:57 +0000 | [diff] [blame] | 2530 | length=(size_t) properties->st_size; |
| 2531 | blob=MapBlob(fileno(image->blob->file),ReadMode,0,length); |
| 2532 | if (blob != (void *) NULL) |
| 2533 | { |
| 2534 | /* |
| 2535 | Format supports blobs-- use memory-mapped I/O. |
| 2536 | */ |
| 2537 | if (image_info->file != (FILE *) NULL) |
| 2538 | image->blob->exempt=MagickFalse; |
| 2539 | else |
| 2540 | { |
| 2541 | (void) fclose(image->blob->file); |
| 2542 | image->blob->file=(FILE *) NULL; |
| 2543 | } |
| 2544 | AttachBlob(image->blob,blob,length); |
| 2545 | image->blob->mapped=MagickTrue; |
| 2546 | } |
| 2547 | } |
| 2548 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2549 | } |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2550 | } |
| 2551 | else |
| 2552 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
| 2553 | if ((LocaleCompare(extension,"Z") == 0) || |
| 2554 | (LocaleCompare(extension,"gz") == 0) || |
| 2555 | (LocaleCompare(extension,"wmz") == 0) || |
| 2556 | (LocaleCompare(extension,"svgz") == 0)) |
| 2557 | { |
| 2558 | if (mode == WriteBinaryBlobMode) |
| 2559 | type="wb"; |
cristy | 43552ad | 2012-01-31 14:42:42 +0000 | [diff] [blame^] | 2560 | image->blob->gzfile=gzopen(filename,type); |
| 2561 | if (image->blob->gzfile != (gzFile) NULL) |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2562 | image->blob->type=ZipStream; |
| 2563 | } |
| 2564 | else |
| 2565 | #endif |
| 2566 | #if defined(MAGICKCORE_BZLIB_DELEGATE) |
| 2567 | if (LocaleCompare(extension,".bz2") == 0) |
| 2568 | { |
cristy | 43552ad | 2012-01-31 14:42:42 +0000 | [diff] [blame^] | 2569 | image->blob->bzfile=BZ2_bzopen(filename,type); |
| 2570 | if (image->blob->bzfile != (BZFILE *) NULL) |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2571 | image->blob->type=BZipStream; |
| 2572 | } |
| 2573 | else |
| 2574 | #endif |
| 2575 | { |
cristy | 18c6c27 | 2011-09-23 14:40:37 +0000 | [diff] [blame] | 2576 | image->blob->file=(FILE *) fopen_utf8(filename,type); |
cristy | bf6a709 | 2010-06-11 02:12:15 +0000 | [diff] [blame] | 2577 | if (image->blob->file != (FILE *) NULL) |
| 2578 | { |
| 2579 | image->blob->type=FileStream; |
| 2580 | #if defined(MAGICKCORE_HAVE_SETVBUF) |
| 2581 | (void) setvbuf(image->blob->file,(char *) NULL,(int) _IOFBF, |
| 2582 | 16384); |
| 2583 | #endif |
| 2584 | } |
| 2585 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2586 | image->blob->status=MagickFalse; |
| 2587 | if (image->blob->type != UndefinedStream) |
| 2588 | image->blob->size=GetBlobSize(image); |
| 2589 | else |
| 2590 | { |
| 2591 | ThrowFileException(exception,BlobError,"UnableToOpenBlob",filename); |
| 2592 | return(MagickFalse); |
| 2593 | } |
| 2594 | return(MagickTrue); |
| 2595 | } |
| 2596 | |
| 2597 | /* |
| 2598 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2599 | % % |
| 2600 | % % |
| 2601 | % % |
| 2602 | + P i n g B l o b % |
| 2603 | % % |
| 2604 | % % |
| 2605 | % % |
| 2606 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2607 | % |
| 2608 | % PingBlob() returns all the attributes of an image or image sequence except |
| 2609 | % for the pixels. It is much faster and consumes far less memory than |
| 2610 | % BlobToImage(). On failure, a NULL image is returned and exception |
| 2611 | % describes the reason for the failure. |
| 2612 | % |
| 2613 | % The format of the PingBlob method is: |
| 2614 | % |
| 2615 | % Image *PingBlob(const ImageInfo *image_info,const void *blob, |
| 2616 | % const size_t length,ExceptionInfo *exception) |
| 2617 | % |
| 2618 | % A description of each parameter follows: |
| 2619 | % |
| 2620 | % o image_info: the image info. |
| 2621 | % |
| 2622 | % o blob: the address of a character stream in one of the image formats |
| 2623 | % understood by ImageMagick. |
| 2624 | % |
| 2625 | % o length: This size_t integer reflects the length in bytes of the blob. |
| 2626 | % |
| 2627 | % o exception: return any errors or warnings in this structure. |
| 2628 | % |
| 2629 | */ |
| 2630 | |
| 2631 | #if defined(__cplusplus) || defined(c_plusplus) |
| 2632 | extern "C" { |
| 2633 | #endif |
| 2634 | |
| 2635 | static size_t PingStream(const Image *magick_unused(image), |
| 2636 | const void *magick_unused(pixels),const size_t columns) |
| 2637 | { |
| 2638 | return(columns); |
| 2639 | } |
| 2640 | |
| 2641 | #if defined(__cplusplus) || defined(c_plusplus) |
| 2642 | } |
| 2643 | #endif |
| 2644 | |
| 2645 | MagickExport Image *PingBlob(const ImageInfo *image_info,const void *blob, |
| 2646 | const size_t length,ExceptionInfo *exception) |
| 2647 | { |
| 2648 | Image |
| 2649 | *image; |
| 2650 | |
| 2651 | ImageInfo |
| 2652 | *ping_info; |
| 2653 | |
| 2654 | assert(image_info != (ImageInfo *) NULL); |
| 2655 | assert(image_info->signature == MagickSignature); |
| 2656 | if (image_info->debug != MagickFalse) |
| 2657 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", |
| 2658 | image_info->filename); |
| 2659 | assert(exception != (ExceptionInfo *) NULL); |
| 2660 | if ((blob == (const void *) NULL) || (length == 0)) |
| 2661 | { |
| 2662 | (void) ThrowMagickException(exception,GetMagickModule(),BlobError, |
| 2663 | "UnrecognizedImageFormat","`%s'",image_info->magick); |
| 2664 | return((Image *) NULL); |
| 2665 | } |
| 2666 | ping_info=CloneImageInfo(image_info); |
| 2667 | ping_info->blob=(void *) AcquireQuantumMemory(length,sizeof(unsigned char)); |
| 2668 | if (ping_info->blob == (const void *) NULL) |
| 2669 | { |
| 2670 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 2671 | ResourceLimitFatalError,"MemoryAllocationFailed","`%s'",""); |
| 2672 | return((Image *) NULL); |
| 2673 | } |
cristy | 54aad5e | 2010-09-03 16:02:04 +0000 | [diff] [blame] | 2674 | (void) memcpy(ping_info->blob,blob,length); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2675 | ping_info->length=length; |
| 2676 | ping_info->ping=MagickTrue; |
| 2677 | image=ReadStream(ping_info,&PingStream,exception); |
| 2678 | ping_info->blob=(void *) RelinquishMagickMemory(ping_info->blob); |
| 2679 | ping_info=DestroyImageInfo(ping_info); |
| 2680 | return(image); |
| 2681 | } |
| 2682 | |
| 2683 | /* |
| 2684 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2685 | % % |
| 2686 | % % |
| 2687 | % % |
| 2688 | + R e a d B l o b % |
| 2689 | % % |
| 2690 | % % |
| 2691 | % % |
| 2692 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2693 | % |
| 2694 | % ReadBlob() reads data from the blob or image file and returns it. It |
| 2695 | % returns the number of bytes read. |
| 2696 | % |
| 2697 | % The format of the ReadBlob method is: |
| 2698 | % |
| 2699 | % ssize_t ReadBlob(Image *image,const size_t length,unsigned char *data) |
| 2700 | % |
| 2701 | % A description of each parameter follows: |
| 2702 | % |
| 2703 | % o image: the image. |
| 2704 | % |
| 2705 | % o length: Specifies an integer representing the number of bytes to read |
| 2706 | % from the file. |
| 2707 | % |
| 2708 | % o data: Specifies an area to place the information requested from the |
| 2709 | % file. |
| 2710 | % |
| 2711 | */ |
| 2712 | MagickExport ssize_t ReadBlob(Image *image,const size_t length, |
| 2713 | unsigned char *data) |
| 2714 | { |
| 2715 | int |
| 2716 | c; |
| 2717 | |
| 2718 | register unsigned char |
| 2719 | *q; |
| 2720 | |
| 2721 | ssize_t |
| 2722 | count; |
| 2723 | |
| 2724 | assert(image != (Image *) NULL); |
| 2725 | assert(image->signature == MagickSignature); |
| 2726 | assert(image->blob != (BlobInfo *) NULL); |
| 2727 | assert(image->blob->type != UndefinedStream); |
| 2728 | if (length == 0) |
| 2729 | return(0); |
| 2730 | assert(data != (void *) NULL); |
| 2731 | count=0; |
| 2732 | q=data; |
| 2733 | switch (image->blob->type) |
| 2734 | { |
| 2735 | case UndefinedStream: |
| 2736 | break; |
| 2737 | case FileStream: |
| 2738 | case StandardStream: |
| 2739 | case PipeStream: |
| 2740 | { |
| 2741 | switch (length) |
| 2742 | { |
| 2743 | default: |
| 2744 | { |
| 2745 | count=(ssize_t) fread(q,1,length,image->blob->file); |
| 2746 | break; |
| 2747 | } |
| 2748 | case 2: |
| 2749 | { |
| 2750 | c=getc(image->blob->file); |
| 2751 | if (c == EOF) |
| 2752 | break; |
| 2753 | *q++=(unsigned char) c; |
| 2754 | count++; |
| 2755 | } |
| 2756 | case 1: |
| 2757 | { |
| 2758 | c=getc(image->blob->file); |
| 2759 | if (c == EOF) |
| 2760 | break; |
| 2761 | *q++=(unsigned char) c; |
| 2762 | count++; |
| 2763 | } |
| 2764 | case 0: |
| 2765 | break; |
| 2766 | } |
| 2767 | break; |
| 2768 | } |
| 2769 | case ZipStream: |
| 2770 | { |
| 2771 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
| 2772 | switch (length) |
| 2773 | { |
| 2774 | default: |
| 2775 | { |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 2776 | count=(ssize_t) gzread(image->blob->gzfile,q,(unsigned int) length); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2777 | break; |
| 2778 | } |
| 2779 | case 2: |
| 2780 | { |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 2781 | c=gzgetc(image->blob->gzfile); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2782 | if (c == EOF) |
| 2783 | break; |
| 2784 | *q++=(unsigned char) c; |
| 2785 | count++; |
| 2786 | } |
| 2787 | case 1: |
| 2788 | { |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 2789 | c=gzgetc(image->blob->gzfile); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2790 | if (c == EOF) |
| 2791 | break; |
| 2792 | *q++=(unsigned char) c; |
| 2793 | count++; |
| 2794 | } |
| 2795 | case 0: |
| 2796 | break; |
| 2797 | } |
| 2798 | #endif |
| 2799 | break; |
| 2800 | } |
| 2801 | case BZipStream: |
| 2802 | { |
| 2803 | #if defined(MAGICKCORE_BZLIB_DELEGATE) |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 2804 | count=(ssize_t) BZ2_bzread(image->blob->bzfile,q,(int) length); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2805 | #endif |
| 2806 | break; |
| 2807 | } |
| 2808 | case FifoStream: |
| 2809 | break; |
| 2810 | case BlobStream: |
| 2811 | { |
| 2812 | register const unsigned char |
| 2813 | *p; |
| 2814 | |
| 2815 | if (image->blob->offset >= (MagickOffsetType) image->blob->length) |
| 2816 | { |
| 2817 | image->blob->eof=MagickTrue; |
| 2818 | break; |
| 2819 | } |
| 2820 | p=image->blob->data+image->blob->offset; |
cristy | 7753b2a | 2011-02-19 18:36:52 +0000 | [diff] [blame] | 2821 | count=(ssize_t) MagickMin(length,image->blob->length-image->blob->offset); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2822 | image->blob->offset+=count; |
| 2823 | if (count != (ssize_t) length) |
| 2824 | image->blob->eof=MagickTrue; |
cristy | 54aad5e | 2010-09-03 16:02:04 +0000 | [diff] [blame] | 2825 | (void) memcpy(q,p,(size_t) count); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2826 | break; |
| 2827 | } |
| 2828 | } |
| 2829 | return(count); |
| 2830 | } |
| 2831 | |
| 2832 | /* |
| 2833 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2834 | % % |
| 2835 | % % |
| 2836 | % % |
| 2837 | + R e a d B l o b B y t e % |
| 2838 | % % |
| 2839 | % % |
| 2840 | % % |
| 2841 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2842 | % |
| 2843 | % ReadBlobByte() reads a single byte from the image file and returns it. |
| 2844 | % |
| 2845 | % The format of the ReadBlobByte method is: |
| 2846 | % |
| 2847 | % int ReadBlobByte(Image *image) |
| 2848 | % |
| 2849 | % A description of each parameter follows. |
| 2850 | % |
| 2851 | % o image: the image. |
| 2852 | % |
| 2853 | */ |
| 2854 | MagickExport int ReadBlobByte(Image *image) |
| 2855 | { |
| 2856 | register const unsigned char |
| 2857 | *p; |
| 2858 | |
| 2859 | ssize_t |
| 2860 | count; |
| 2861 | |
| 2862 | unsigned char |
| 2863 | buffer[1]; |
| 2864 | |
| 2865 | assert(image != (Image *) NULL); |
| 2866 | assert(image->signature == MagickSignature); |
| 2867 | p=ReadBlobStream(image,1,buffer,&count); |
| 2868 | if (count != 1) |
| 2869 | return(EOF); |
| 2870 | return((int) (*p)); |
| 2871 | } |
| 2872 | |
| 2873 | /* |
| 2874 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2875 | % % |
| 2876 | % % |
| 2877 | % % |
| 2878 | + R e a d B l o b D o u b l e % |
| 2879 | % % |
| 2880 | % % |
| 2881 | % % |
| 2882 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2883 | % |
| 2884 | % ReadBlobDouble() reads a double value as a 64-bit quantity in the byte-order |
| 2885 | % specified by the endian member of the image structure. |
| 2886 | % |
| 2887 | % The format of the ReadBlobDouble method is: |
| 2888 | % |
| 2889 | % double ReadBlobDouble(Image *image) |
| 2890 | % |
| 2891 | % A description of each parameter follows. |
| 2892 | % |
| 2893 | % o image: the image. |
| 2894 | % |
| 2895 | */ |
| 2896 | MagickExport double ReadBlobDouble(Image *image) |
| 2897 | { |
| 2898 | union |
| 2899 | { |
| 2900 | MagickSizeType |
| 2901 | unsigned_value; |
| 2902 | |
| 2903 | double |
| 2904 | double_value; |
| 2905 | } quantum; |
| 2906 | |
| 2907 | quantum.double_value=0.0; |
| 2908 | quantum.unsigned_value=ReadBlobLongLong(image); |
| 2909 | return(quantum.double_value); |
| 2910 | } |
| 2911 | |
| 2912 | /* |
| 2913 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2914 | % % |
| 2915 | % % |
| 2916 | % % |
| 2917 | + R e a d B l o b F l o a t % |
| 2918 | % % |
| 2919 | % % |
| 2920 | % % |
| 2921 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2922 | % |
| 2923 | % ReadBlobFloat() reads a float value as a 32-bit quantity in the byte-order |
| 2924 | % specified by the endian member of the image structure. |
| 2925 | % |
| 2926 | % The format of the ReadBlobFloat method is: |
| 2927 | % |
| 2928 | % float ReadBlobFloat(Image *image) |
| 2929 | % |
| 2930 | % A description of each parameter follows. |
| 2931 | % |
| 2932 | % o image: the image. |
| 2933 | % |
| 2934 | */ |
| 2935 | MagickExport float ReadBlobFloat(Image *image) |
| 2936 | { |
| 2937 | union |
| 2938 | { |
| 2939 | unsigned int |
| 2940 | unsigned_value; |
| 2941 | |
| 2942 | float |
| 2943 | float_value; |
| 2944 | } quantum; |
| 2945 | |
| 2946 | quantum.float_value=0.0; |
| 2947 | quantum.unsigned_value=ReadBlobLong(image); |
| 2948 | return(quantum.float_value); |
| 2949 | } |
| 2950 | |
| 2951 | /* |
| 2952 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2953 | % % |
| 2954 | % % |
| 2955 | % % |
| 2956 | + R e a d B l o b L o n g % |
| 2957 | % % |
| 2958 | % % |
| 2959 | % % |
| 2960 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 2961 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 2962 | % ReadBlobLong() reads a ssize_t value as a 32-bit quantity in the byte-order |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 2963 | % specified by the endian member of the image structure. |
| 2964 | % |
| 2965 | % The format of the ReadBlobLong method is: |
| 2966 | % |
| 2967 | % unsigned int ReadBlobLong(Image *image) |
| 2968 | % |
| 2969 | % A description of each parameter follows. |
| 2970 | % |
| 2971 | % o image: the image. |
| 2972 | % |
| 2973 | */ |
| 2974 | MagickExport unsigned int ReadBlobLong(Image *image) |
| 2975 | { |
| 2976 | register const unsigned char |
| 2977 | *p; |
| 2978 | |
| 2979 | ssize_t |
| 2980 | count; |
| 2981 | |
| 2982 | unsigned char |
| 2983 | buffer[4]; |
| 2984 | |
| 2985 | unsigned int |
| 2986 | value; |
| 2987 | |
| 2988 | assert(image != (Image *) NULL); |
| 2989 | assert(image->signature == MagickSignature); |
| 2990 | *buffer='\0'; |
| 2991 | p=ReadBlobStream(image,4,buffer,&count); |
| 2992 | if (count != 4) |
| 2993 | return(0UL); |
| 2994 | if (image->endian == LSBEndian) |
| 2995 | { |
| 2996 | value=(unsigned int) (*p++); |
| 2997 | value|=((unsigned int) (*p++)) << 8; |
| 2998 | value|=((unsigned int) (*p++)) << 16; |
| 2999 | value|=((unsigned int) (*p++)) << 24; |
| 3000 | return(value); |
| 3001 | } |
| 3002 | value=((unsigned int) (*p++)) << 24; |
| 3003 | value|=((unsigned int) (*p++)) << 16; |
| 3004 | value|=((unsigned int) (*p++)) << 8; |
| 3005 | value|=((unsigned int) (*p++)); |
| 3006 | return(value); |
| 3007 | } |
| 3008 | |
| 3009 | /* |
| 3010 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3011 | % % |
| 3012 | % % |
| 3013 | % % |
| 3014 | + R e a d B l o b L o n g L o n g % |
| 3015 | % % |
| 3016 | % % |
| 3017 | % % |
| 3018 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3019 | % |
cristy | 4cb162a | 2010-05-30 03:04:47 +0000 | [diff] [blame] | 3020 | % ReadBlobLongLong() reads a long long value as a 64-bit quantity in the |
| 3021 | % byte-order specified by the endian member of the image structure. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3022 | % |
cristy | 4cb162a | 2010-05-30 03:04:47 +0000 | [diff] [blame] | 3023 | % The format of the ReadBlobLongLong method is: |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3024 | % |
cristy | 4cb162a | 2010-05-30 03:04:47 +0000 | [diff] [blame] | 3025 | % MagickSizeType ReadBlobLongLong(Image *image) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3026 | % |
| 3027 | % A description of each parameter follows. |
| 3028 | % |
| 3029 | % o image: the image. |
| 3030 | % |
| 3031 | */ |
| 3032 | MagickExport MagickSizeType ReadBlobLongLong(Image *image) |
| 3033 | { |
cristy | 0286d85 | 2010-10-12 18:38:07 +0000 | [diff] [blame] | 3034 | MagickSizeType |
| 3035 | value; |
| 3036 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3037 | register const unsigned char |
| 3038 | *p; |
| 3039 | |
| 3040 | ssize_t |
| 3041 | count; |
| 3042 | |
| 3043 | unsigned char |
| 3044 | buffer[8]; |
| 3045 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3046 | assert(image != (Image *) NULL); |
| 3047 | assert(image->signature == MagickSignature); |
| 3048 | *buffer='\0'; |
| 3049 | p=ReadBlobStream(image,8,buffer,&count); |
| 3050 | if (count != 8) |
| 3051 | return(MagickULLConstant(0)); |
| 3052 | if (image->endian == LSBEndian) |
| 3053 | { |
| 3054 | value=(MagickSizeType) (*p++); |
| 3055 | value|=((MagickSizeType) (*p++)) << 8; |
| 3056 | value|=((MagickSizeType) (*p++)) << 16; |
| 3057 | value|=((MagickSizeType) (*p++)) << 24; |
| 3058 | value|=((MagickSizeType) (*p++)) << 32; |
| 3059 | value|=((MagickSizeType) (*p++)) << 40; |
| 3060 | value|=((MagickSizeType) (*p++)) << 48; |
| 3061 | value|=((MagickSizeType) (*p++)) << 56; |
| 3062 | return(value & MagickULLConstant(0xffffffffffffffff)); |
| 3063 | } |
| 3064 | value=((MagickSizeType) (*p++)) << 56; |
| 3065 | value|=((MagickSizeType) (*p++)) << 48; |
| 3066 | value|=((MagickSizeType) (*p++)) << 40; |
| 3067 | value|=((MagickSizeType) (*p++)) << 32; |
| 3068 | value|=((MagickSizeType) (*p++)) << 24; |
| 3069 | value|=((MagickSizeType) (*p++)) << 16; |
| 3070 | value|=((MagickSizeType) (*p++)) << 8; |
| 3071 | value|=((MagickSizeType) (*p++)); |
| 3072 | return(value & MagickULLConstant(0xffffffffffffffff)); |
| 3073 | } |
| 3074 | |
| 3075 | /* |
| 3076 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3077 | % % |
| 3078 | % % |
| 3079 | % % |
| 3080 | + R e a d B l o b S h o r t % |
| 3081 | % % |
| 3082 | % % |
| 3083 | % % |
| 3084 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3085 | % |
| 3086 | % ReadBlobShort() reads a short value as a 16-bit quantity in the byte-order |
| 3087 | % specified by the endian member of the image structure. |
| 3088 | % |
| 3089 | % The format of the ReadBlobShort method is: |
| 3090 | % |
| 3091 | % unsigned short ReadBlobShort(Image *image) |
| 3092 | % |
| 3093 | % A description of each parameter follows. |
| 3094 | % |
| 3095 | % o image: the image. |
| 3096 | % |
| 3097 | */ |
| 3098 | MagickExport unsigned short ReadBlobShort(Image *image) |
| 3099 | { |
| 3100 | register const unsigned char |
| 3101 | *p; |
| 3102 | |
| 3103 | register unsigned int |
| 3104 | value; |
| 3105 | |
| 3106 | ssize_t |
| 3107 | count; |
| 3108 | |
| 3109 | unsigned char |
| 3110 | buffer[2]; |
| 3111 | |
| 3112 | assert(image != (Image *) NULL); |
| 3113 | assert(image->signature == MagickSignature); |
| 3114 | *buffer='\0'; |
| 3115 | p=ReadBlobStream(image,2,buffer,&count); |
| 3116 | if (count != 2) |
| 3117 | return((unsigned short) 0U); |
| 3118 | if (image->endian == LSBEndian) |
| 3119 | { |
| 3120 | value=(unsigned int) (*p++); |
| 3121 | value|=((unsigned int) (*p++)) << 8; |
| 3122 | return((unsigned short) (value & 0xffff)); |
| 3123 | } |
| 3124 | value=(unsigned int) ((*p++) << 8); |
| 3125 | value|=(unsigned int) (*p++); |
| 3126 | return((unsigned short) (value & 0xffff)); |
| 3127 | } |
| 3128 | |
| 3129 | /* |
| 3130 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3131 | % % |
| 3132 | % % |
| 3133 | % % |
| 3134 | + R e a d B l o b L S B L o n g % |
| 3135 | % % |
| 3136 | % % |
| 3137 | % % |
| 3138 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3139 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 3140 | % ReadBlobLSBLong() reads a ssize_t value as a 32-bit quantity in |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3141 | % least-significant byte first order. |
| 3142 | % |
| 3143 | % The format of the ReadBlobLSBLong method is: |
| 3144 | % |
| 3145 | % unsigned int ReadBlobLSBLong(Image *image) |
| 3146 | % |
| 3147 | % A description of each parameter follows. |
| 3148 | % |
| 3149 | % o image: the image. |
| 3150 | % |
| 3151 | */ |
| 3152 | MagickExport unsigned int ReadBlobLSBLong(Image *image) |
| 3153 | { |
| 3154 | register const unsigned char |
| 3155 | *p; |
| 3156 | |
| 3157 | register unsigned int |
| 3158 | value; |
| 3159 | |
| 3160 | ssize_t |
| 3161 | count; |
| 3162 | |
| 3163 | unsigned char |
| 3164 | buffer[4]; |
| 3165 | |
| 3166 | assert(image != (Image *) NULL); |
| 3167 | assert(image->signature == MagickSignature); |
| 3168 | *buffer='\0'; |
| 3169 | p=ReadBlobStream(image,4,buffer,&count); |
| 3170 | if (count != 4) |
| 3171 | return(0U); |
| 3172 | value=(unsigned int) (*p++); |
| 3173 | value|=((unsigned int) (*p++)) << 8; |
| 3174 | value|=((unsigned int) (*p++)) << 16; |
| 3175 | value|=((unsigned int) (*p++)) << 24; |
| 3176 | return(value); |
| 3177 | } |
| 3178 | |
| 3179 | /* |
| 3180 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3181 | % % |
| 3182 | % % |
| 3183 | % % |
| 3184 | + R e a d B l o b L S B S h o r t % |
| 3185 | % % |
| 3186 | % % |
| 3187 | % % |
| 3188 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3189 | % |
| 3190 | % ReadBlobLSBShort() reads a short value as a 16-bit quantity in |
| 3191 | % least-significant byte first order. |
| 3192 | % |
| 3193 | % The format of the ReadBlobLSBShort method is: |
| 3194 | % |
| 3195 | % unsigned short ReadBlobLSBShort(Image *image) |
| 3196 | % |
| 3197 | % A description of each parameter follows. |
| 3198 | % |
| 3199 | % o image: the image. |
| 3200 | % |
| 3201 | */ |
| 3202 | MagickExport unsigned short ReadBlobLSBShort(Image *image) |
| 3203 | { |
| 3204 | register const unsigned char |
| 3205 | *p; |
| 3206 | |
| 3207 | register unsigned int |
| 3208 | value; |
| 3209 | |
| 3210 | ssize_t |
| 3211 | count; |
| 3212 | |
| 3213 | unsigned char |
| 3214 | buffer[2]; |
| 3215 | |
| 3216 | assert(image != (Image *) NULL); |
| 3217 | assert(image->signature == MagickSignature); |
| 3218 | *buffer='\0'; |
| 3219 | p=ReadBlobStream(image,2,buffer,&count); |
| 3220 | if (count != 2) |
| 3221 | return((unsigned short) 0U); |
| 3222 | value=(unsigned int) (*p++); |
| 3223 | value|=((unsigned int) ((*p++)) << 8); |
| 3224 | return((unsigned short) (value & 0xffff)); |
| 3225 | } |
| 3226 | |
| 3227 | /* |
| 3228 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3229 | % % |
| 3230 | % % |
| 3231 | % % |
| 3232 | + R e a d B l o b M S B L o n g % |
| 3233 | % % |
| 3234 | % % |
| 3235 | % % |
| 3236 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3237 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 3238 | % ReadBlobMSBLong() reads a ssize_t value as a 32-bit quantity in |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3239 | % most-significant byte first order. |
| 3240 | % |
| 3241 | % The format of the ReadBlobMSBLong method is: |
| 3242 | % |
| 3243 | % unsigned int ReadBlobMSBLong(Image *image) |
| 3244 | % |
| 3245 | % A description of each parameter follows. |
| 3246 | % |
| 3247 | % o image: the image. |
| 3248 | % |
| 3249 | */ |
| 3250 | MagickExport unsigned int ReadBlobMSBLong(Image *image) |
| 3251 | { |
| 3252 | register const unsigned char |
| 3253 | *p; |
| 3254 | |
| 3255 | register unsigned int |
| 3256 | value; |
| 3257 | |
| 3258 | ssize_t |
| 3259 | count; |
| 3260 | |
| 3261 | unsigned char |
| 3262 | buffer[4]; |
| 3263 | |
| 3264 | assert(image != (Image *) NULL); |
| 3265 | assert(image->signature == MagickSignature); |
| 3266 | *buffer='\0'; |
| 3267 | p=ReadBlobStream(image,4,buffer,&count); |
| 3268 | if (count != 4) |
| 3269 | return(0UL); |
| 3270 | value=((unsigned int) (*p++) << 24); |
| 3271 | value|=((unsigned int) (*p++) << 16); |
| 3272 | value|=((unsigned int) (*p++) << 8); |
| 3273 | value|=(unsigned int) (*p++); |
| 3274 | return(value); |
| 3275 | } |
| 3276 | |
| 3277 | /* |
| 3278 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3279 | % % |
| 3280 | % % |
| 3281 | % % |
cristy | 2d3d87f | 2010-03-01 00:23:08 +0000 | [diff] [blame] | 3282 | + R e a d B l o b M S B L o n g L o n g % |
| 3283 | % % |
| 3284 | % % |
| 3285 | % % |
| 3286 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3287 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 3288 | % ReadBlobMSBLongLong() reads a ssize_t value as a 64-bit quantity in |
cristy | 2d3d87f | 2010-03-01 00:23:08 +0000 | [diff] [blame] | 3289 | % most-significant byte first order. |
| 3290 | % |
| 3291 | % The format of the ReadBlobMSBLongLong method is: |
| 3292 | % |
| 3293 | % unsigned int ReadBlobMSBLongLong(Image *image) |
| 3294 | % |
| 3295 | % A description of each parameter follows. |
| 3296 | % |
| 3297 | % o image: the image. |
| 3298 | % |
| 3299 | */ |
| 3300 | MagickExport MagickSizeType ReadBlobMSBLongLong(Image *image) |
| 3301 | { |
| 3302 | register const unsigned char |
| 3303 | *p; |
| 3304 | |
| 3305 | register MagickSizeType |
| 3306 | value; |
| 3307 | |
| 3308 | ssize_t |
| 3309 | count; |
| 3310 | |
| 3311 | unsigned char |
cristy | 0286d85 | 2010-10-12 18:38:07 +0000 | [diff] [blame] | 3312 | buffer[8]; |
cristy | 2d3d87f | 2010-03-01 00:23:08 +0000 | [diff] [blame] | 3313 | |
| 3314 | assert(image != (Image *) NULL); |
| 3315 | assert(image->signature == MagickSignature); |
| 3316 | *buffer='\0'; |
| 3317 | p=ReadBlobStream(image,8,buffer,&count); |
| 3318 | if (count != 8) |
| 3319 | return(MagickULLConstant(0)); |
| 3320 | value=((MagickSizeType) (*p++)) << 56; |
| 3321 | value|=((MagickSizeType) (*p++)) << 48; |
| 3322 | value|=((MagickSizeType) (*p++)) << 40; |
| 3323 | value|=((MagickSizeType) (*p++)) << 32; |
| 3324 | value|=((MagickSizeType) (*p++)) << 24; |
| 3325 | value|=((MagickSizeType) (*p++)) << 16; |
| 3326 | value|=((MagickSizeType) (*p++)) << 8; |
| 3327 | value|=((MagickSizeType) (*p++)); |
| 3328 | return(value & MagickULLConstant(0xffffffffffffffff)); |
| 3329 | } |
| 3330 | |
| 3331 | /* |
| 3332 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3333 | % % |
| 3334 | % % |
| 3335 | % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3336 | + R e a d B l o b M S B S h o r t % |
| 3337 | % % |
| 3338 | % % |
| 3339 | % % |
| 3340 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3341 | % |
| 3342 | % ReadBlobMSBShort() reads a short value as a 16-bit quantity in |
| 3343 | % most-significant byte first order. |
| 3344 | % |
| 3345 | % The format of the ReadBlobMSBShort method is: |
| 3346 | % |
| 3347 | % unsigned short ReadBlobMSBShort(Image *image) |
| 3348 | % |
| 3349 | % A description of each parameter follows. |
| 3350 | % |
| 3351 | % o image: the image. |
| 3352 | % |
| 3353 | */ |
| 3354 | MagickExport unsigned short ReadBlobMSBShort(Image *image) |
| 3355 | { |
| 3356 | register const unsigned char |
| 3357 | *p; |
| 3358 | |
| 3359 | register unsigned int |
| 3360 | value; |
| 3361 | |
| 3362 | ssize_t |
| 3363 | count; |
| 3364 | |
| 3365 | unsigned char |
| 3366 | buffer[2]; |
| 3367 | |
| 3368 | assert(image != (Image *) NULL); |
| 3369 | assert(image->signature == MagickSignature); |
| 3370 | *buffer='\0'; |
| 3371 | p=ReadBlobStream(image,2,buffer,&count); |
| 3372 | if (count != 2) |
| 3373 | return((unsigned short) 0U); |
| 3374 | value=(unsigned int) ((*p++) << 8); |
| 3375 | value|=(unsigned int) (*p++); |
| 3376 | return((unsigned short) (value & 0xffff)); |
| 3377 | } |
| 3378 | |
| 3379 | /* |
| 3380 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3381 | % % |
| 3382 | % % |
| 3383 | % % |
| 3384 | + R e a d B l o b S t r i n g % |
| 3385 | % % |
| 3386 | % % |
| 3387 | % % |
| 3388 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3389 | % |
| 3390 | % ReadBlobString() reads characters from a blob or file until a newline |
| 3391 | % character is read or an end-of-file condition is encountered. |
| 3392 | % |
| 3393 | % The format of the ReadBlobString method is: |
| 3394 | % |
| 3395 | % char *ReadBlobString(Image *image,char *string) |
| 3396 | % |
| 3397 | % A description of each parameter follows: |
| 3398 | % |
| 3399 | % o image: the image. |
| 3400 | % |
| 3401 | % o string: the address of a character buffer. |
| 3402 | % |
| 3403 | */ |
| 3404 | MagickExport char *ReadBlobString(Image *image,char *string) |
| 3405 | { |
| 3406 | register const unsigned char |
| 3407 | *p; |
| 3408 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 3409 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3410 | i; |
| 3411 | |
| 3412 | ssize_t |
| 3413 | count; |
| 3414 | |
| 3415 | unsigned char |
| 3416 | buffer[1]; |
| 3417 | |
| 3418 | assert(image != (Image *) NULL); |
| 3419 | assert(image->signature == MagickSignature); |
| 3420 | for (i=0; i < (MaxTextExtent-1L); i++) |
| 3421 | { |
| 3422 | p=ReadBlobStream(image,1,buffer,&count); |
| 3423 | if (count != 1) |
| 3424 | { |
| 3425 | if (i == 0) |
| 3426 | return((char *) NULL); |
| 3427 | break; |
| 3428 | } |
| 3429 | string[i]=(char) (*p); |
cristy | 2b5db10 | 2010-06-09 01:07:28 +0000 | [diff] [blame] | 3430 | if ((string[i] == '\r') || (string[i] == '\n')) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3431 | break; |
| 3432 | } |
cristy | 2b5db10 | 2010-06-09 01:07:28 +0000 | [diff] [blame] | 3433 | if (string[i] == '\r') |
| 3434 | (void) ReadBlobStream(image,1,buffer,&count); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3435 | string[i]='\0'; |
| 3436 | return(string); |
| 3437 | } |
| 3438 | |
| 3439 | /* |
| 3440 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3441 | % % |
| 3442 | % % |
| 3443 | % % |
| 3444 | + R e f e r e n c e B l o b % |
| 3445 | % % |
| 3446 | % % |
| 3447 | % % |
| 3448 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3449 | % |
| 3450 | % ReferenceBlob() increments the reference count associated with the pixel |
| 3451 | % blob returning a pointer to the blob. |
| 3452 | % |
| 3453 | % The format of the ReferenceBlob method is: |
| 3454 | % |
| 3455 | % BlobInfo ReferenceBlob(BlobInfo *blob_info) |
| 3456 | % |
| 3457 | % A description of each parameter follows: |
| 3458 | % |
| 3459 | % o blob_info: the blob_info. |
| 3460 | % |
| 3461 | */ |
| 3462 | MagickExport BlobInfo *ReferenceBlob(BlobInfo *blob) |
| 3463 | { |
| 3464 | assert(blob != (BlobInfo *) NULL); |
| 3465 | assert(blob->signature == MagickSignature); |
| 3466 | if (blob->debug != MagickFalse) |
| 3467 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 3468 | LockSemaphoreInfo(blob->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3469 | blob->reference_count++; |
cristy | f84a193 | 2010-01-03 18:00:18 +0000 | [diff] [blame] | 3470 | UnlockSemaphoreInfo(blob->semaphore); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3471 | return(blob); |
| 3472 | } |
| 3473 | |
| 3474 | /* |
| 3475 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3476 | % % |
| 3477 | % % |
| 3478 | % % |
| 3479 | + S e e k B l o b % |
| 3480 | % % |
| 3481 | % % |
| 3482 | % % |
| 3483 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3484 | % |
| 3485 | % SeekBlob() sets the offset in bytes from the beginning of a blob or file |
| 3486 | % and returns the resulting offset. |
| 3487 | % |
| 3488 | % The format of the SeekBlob method is: |
| 3489 | % |
| 3490 | % MagickOffsetType SeekBlob(Image *image,const MagickOffsetType offset, |
| 3491 | % const int whence) |
| 3492 | % |
| 3493 | % A description of each parameter follows: |
| 3494 | % |
| 3495 | % o image: the image. |
| 3496 | % |
| 3497 | % o offset: Specifies an integer representing the offset in bytes. |
| 3498 | % |
| 3499 | % o whence: Specifies an integer representing how the offset is |
| 3500 | % treated relative to the beginning of the blob as follows: |
| 3501 | % |
| 3502 | % SEEK_SET Set position equal to offset bytes. |
| 3503 | % SEEK_CUR Set position to current location plus offset. |
| 3504 | % SEEK_END Set position to EOF plus offset. |
| 3505 | % |
| 3506 | */ |
| 3507 | MagickExport MagickOffsetType SeekBlob(Image *image, |
| 3508 | const MagickOffsetType offset,const int whence) |
| 3509 | { |
| 3510 | assert(image != (Image *) NULL); |
| 3511 | assert(image->signature == MagickSignature); |
| 3512 | if (image->debug != MagickFalse) |
| 3513 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3514 | assert(image->blob != (BlobInfo *) NULL); |
| 3515 | assert(image->blob->type != UndefinedStream); |
| 3516 | switch (image->blob->type) |
| 3517 | { |
| 3518 | case UndefinedStream: |
| 3519 | break; |
| 3520 | case FileStream: |
| 3521 | { |
cristy | 53e0e4a | 2011-02-18 02:55:20 +0000 | [diff] [blame] | 3522 | if (fseek(image->blob->file,offset,whence) < 0) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3523 | return(-1); |
| 3524 | image->blob->offset=TellBlob(image); |
| 3525 | break; |
| 3526 | } |
| 3527 | case StandardStream: |
| 3528 | case PipeStream: |
| 3529 | case ZipStream: |
| 3530 | { |
| 3531 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 3532 | if (gzseek(image->blob->gzfile,(off_t) offset,whence) < 0) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3533 | return(-1); |
| 3534 | #endif |
| 3535 | image->blob->offset=TellBlob(image); |
| 3536 | break; |
| 3537 | } |
| 3538 | case BZipStream: |
| 3539 | return(-1); |
| 3540 | case FifoStream: |
| 3541 | return(-1); |
| 3542 | case BlobStream: |
| 3543 | { |
| 3544 | switch (whence) |
| 3545 | { |
| 3546 | case SEEK_SET: |
| 3547 | default: |
| 3548 | { |
| 3549 | if (offset < 0) |
| 3550 | return(-1); |
| 3551 | image->blob->offset=offset; |
| 3552 | break; |
| 3553 | } |
| 3554 | case SEEK_CUR: |
| 3555 | { |
| 3556 | if ((image->blob->offset+offset) < 0) |
| 3557 | return(-1); |
| 3558 | image->blob->offset+=offset; |
| 3559 | break; |
| 3560 | } |
| 3561 | case SEEK_END: |
| 3562 | { |
| 3563 | if (((MagickOffsetType) image->blob->length+offset) < 0) |
| 3564 | return(-1); |
| 3565 | image->blob->offset=image->blob->length+offset; |
| 3566 | break; |
| 3567 | } |
| 3568 | } |
| 3569 | if (image->blob->offset <= (MagickOffsetType) |
| 3570 | ((off_t) image->blob->length)) |
| 3571 | image->blob->eof=MagickFalse; |
| 3572 | else |
| 3573 | if (image->blob->mapped != MagickFalse) |
| 3574 | return(-1); |
| 3575 | else |
| 3576 | { |
| 3577 | image->blob->extent=(size_t) (image->blob->offset+ |
| 3578 | image->blob->quantum); |
| 3579 | image->blob->data=(unsigned char *) ResizeQuantumMemory( |
| 3580 | image->blob->data,image->blob->extent+1, |
| 3581 | sizeof(*image->blob->data)); |
| 3582 | (void) SyncBlob(image); |
| 3583 | if (image->blob->data == (unsigned char *) NULL) |
| 3584 | { |
| 3585 | (void) DetachBlob(image->blob); |
| 3586 | return(-1); |
| 3587 | } |
| 3588 | } |
| 3589 | break; |
| 3590 | } |
| 3591 | } |
| 3592 | return(image->blob->offset); |
| 3593 | } |
| 3594 | |
| 3595 | /* |
| 3596 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3597 | % % |
| 3598 | % % |
| 3599 | % % |
| 3600 | + S e t B l o b E x e m p t % |
| 3601 | % % |
| 3602 | % % |
| 3603 | % % |
| 3604 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3605 | % |
| 3606 | % SetBlobExempt() sets the blob exempt status. |
| 3607 | % |
| 3608 | % The format of the SetBlobExempt method is: |
| 3609 | % |
| 3610 | % MagickBooleanType SetBlobExempt(const Image *image, |
| 3611 | % const MagickBooleanType exempt) |
| 3612 | % |
| 3613 | % A description of each parameter follows: |
| 3614 | % |
| 3615 | % o image: the image. |
| 3616 | % |
| 3617 | % o exempt: Set to true if this blob is exempt from being closed. |
| 3618 | % |
| 3619 | */ |
cristy | 7832dc2 | 2011-09-05 01:21:53 +0000 | [diff] [blame] | 3620 | MagickPrivate void SetBlobExempt(Image *image,const MagickBooleanType exempt) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3621 | { |
| 3622 | assert(image != (const Image *) NULL); |
| 3623 | assert(image->signature == MagickSignature); |
| 3624 | if (image->debug != MagickFalse) |
| 3625 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3626 | image->blob->exempt=exempt; |
| 3627 | } |
| 3628 | |
| 3629 | /* |
| 3630 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3631 | % % |
| 3632 | % % |
| 3633 | % % |
| 3634 | + S e t B l o b E x t e n t % |
| 3635 | % % |
| 3636 | % % |
| 3637 | % % |
| 3638 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3639 | % |
| 3640 | % SetBlobExtent() ensures enough space is allocated for the blob. If the |
| 3641 | % method is successful, subsequent writes to bytes in the specified range are |
| 3642 | % guaranteed not to fail. |
| 3643 | % |
| 3644 | % The format of the SetBlobExtent method is: |
| 3645 | % |
| 3646 | % MagickBooleanType SetBlobExtent(Image *image,const MagickSizeType extent) |
| 3647 | % |
| 3648 | % A description of each parameter follows: |
| 3649 | % |
| 3650 | % o image: the image. |
| 3651 | % |
| 3652 | % o extent: the blob maximum extent. |
| 3653 | % |
| 3654 | */ |
cristy | 7832dc2 | 2011-09-05 01:21:53 +0000 | [diff] [blame] | 3655 | MagickPrivate MagickBooleanType SetBlobExtent(Image *image, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3656 | const MagickSizeType extent) |
| 3657 | { |
| 3658 | assert(image != (Image *) NULL); |
| 3659 | assert(image->signature == MagickSignature); |
| 3660 | if (image->debug != MagickFalse) |
| 3661 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3662 | assert(image->blob != (BlobInfo *) NULL); |
| 3663 | assert(image->blob->type != UndefinedStream); |
| 3664 | switch (image->blob->type) |
| 3665 | { |
| 3666 | case UndefinedStream: |
| 3667 | break; |
| 3668 | case FileStream: |
| 3669 | { |
| 3670 | if (extent != (MagickSizeType) ((off_t) extent)) |
| 3671 | return(MagickFalse); |
| 3672 | #if !defined(MAGICKCORE_POSIX_FALLOCATE) |
| 3673 | return(MagickFalse); |
| 3674 | #else |
| 3675 | { |
| 3676 | int |
| 3677 | status; |
| 3678 | |
| 3679 | MagickOffsetType |
| 3680 | offset; |
| 3681 | |
| 3682 | offset=TellBlob(image); |
| 3683 | status=posix_fallocate(fileno(image->blob->file),(off_t) offset, |
| 3684 | (off_t) (extent-offset)); |
| 3685 | if (status != 0) |
| 3686 | return(MagickFalse); |
| 3687 | } |
| 3688 | #endif |
| 3689 | break; |
| 3690 | } |
| 3691 | case StandardStream: |
| 3692 | case PipeStream: |
| 3693 | case ZipStream: |
| 3694 | return(MagickFalse); |
| 3695 | case BZipStream: |
| 3696 | return(MagickFalse); |
| 3697 | case FifoStream: |
| 3698 | return(MagickFalse); |
| 3699 | case BlobStream: |
| 3700 | { |
| 3701 | if (image->blob->mapped != MagickFalse) |
| 3702 | { |
| 3703 | if (image->blob->file == (FILE *) NULL) |
| 3704 | return(MagickFalse); |
| 3705 | (void) UnmapBlob(image->blob->data,image->blob->length); |
| 3706 | #if !defined(MAGICKCORE_POSIX_FALLOCATE) |
| 3707 | return(MagickFalse); |
| 3708 | #else |
| 3709 | { |
| 3710 | int |
| 3711 | status; |
| 3712 | |
| 3713 | MagickOffsetType |
| 3714 | offset; |
| 3715 | |
| 3716 | offset=TellBlob(image); |
| 3717 | status=posix_fallocate(fileno(image->blob->file),(off_t) offset, |
| 3718 | (off_t) (extent-offset)); |
| 3719 | if (status != 0) |
| 3720 | return(MagickFalse); |
| 3721 | } |
| 3722 | image->blob->data=(unsigned char*) MapBlob(fileno(image->blob->file), |
| 3723 | WriteMode,0,(size_t) extent); |
| 3724 | image->blob->extent=(size_t) extent; |
| 3725 | image->blob->length=(size_t) extent; |
| 3726 | (void) SyncBlob(image); |
| 3727 | break; |
| 3728 | #endif |
| 3729 | } |
| 3730 | if (extent != (MagickSizeType) ((size_t) extent)) |
| 3731 | return(MagickFalse); |
| 3732 | image->blob->extent=(size_t) extent; |
| 3733 | image->blob->data=(unsigned char *) ResizeQuantumMemory(image->blob->data, |
| 3734 | image->blob->extent+1,sizeof(*image->blob->data)); |
| 3735 | (void) SyncBlob(image); |
| 3736 | if (image->blob->data == (unsigned char *) NULL) |
| 3737 | { |
| 3738 | (void) DetachBlob(image->blob); |
| 3739 | return(MagickFalse); |
| 3740 | } |
| 3741 | break; |
| 3742 | } |
| 3743 | } |
| 3744 | return(MagickTrue); |
| 3745 | } |
| 3746 | |
| 3747 | /* |
| 3748 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3749 | % % |
| 3750 | % % |
| 3751 | % % |
| 3752 | + S y n c B l o b % |
| 3753 | % % |
| 3754 | % % |
| 3755 | % % |
| 3756 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3757 | % |
| 3758 | % SyncBlob() flushes the datastream if it is a file or synchronizes the data |
| 3759 | % attributes if it is an blob. |
| 3760 | % |
| 3761 | % The format of the SyncBlob method is: |
| 3762 | % |
| 3763 | % int SyncBlob(Image *image) |
| 3764 | % |
| 3765 | % A description of each parameter follows: |
| 3766 | % |
| 3767 | % o image: the image. |
| 3768 | % |
| 3769 | */ |
| 3770 | static int SyncBlob(Image *image) |
| 3771 | { |
| 3772 | int |
| 3773 | status; |
| 3774 | |
| 3775 | assert(image != (Image *) NULL); |
| 3776 | assert(image->signature == MagickSignature); |
| 3777 | if (image->debug != MagickFalse) |
| 3778 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3779 | assert(image->blob != (BlobInfo *) NULL); |
| 3780 | assert(image->blob->type != UndefinedStream); |
| 3781 | status=0; |
| 3782 | switch (image->blob->type) |
| 3783 | { |
| 3784 | case UndefinedStream: |
| 3785 | break; |
| 3786 | case FileStream: |
| 3787 | case StandardStream: |
| 3788 | case PipeStream: |
| 3789 | { |
| 3790 | status=fflush(image->blob->file); |
| 3791 | break; |
| 3792 | } |
| 3793 | case ZipStream: |
| 3794 | { |
| 3795 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 3796 | status=gzflush(image->blob->gzfile,Z_SYNC_FLUSH); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3797 | #endif |
| 3798 | break; |
| 3799 | } |
| 3800 | case BZipStream: |
| 3801 | { |
| 3802 | #if defined(MAGICKCORE_BZLIB_DELEGATE) |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 3803 | status=BZ2_bzflush(image->blob->bzfile); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3804 | #endif |
| 3805 | break; |
| 3806 | } |
| 3807 | case FifoStream: |
| 3808 | break; |
| 3809 | case BlobStream: |
| 3810 | { |
| 3811 | #if defined(MAGICKCORE_HAVE_MMAP_FILEIO) |
| 3812 | if (image->blob->mapped != MagickFalse) |
| 3813 | status=msync(image->blob->data,image->blob->length,MS_SYNC); |
| 3814 | #endif |
| 3815 | break; |
| 3816 | } |
| 3817 | } |
| 3818 | return(status); |
| 3819 | } |
| 3820 | |
| 3821 | /* |
| 3822 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3823 | % % |
| 3824 | % % |
| 3825 | % % |
| 3826 | + T e l l B l o b % |
| 3827 | % % |
| 3828 | % % |
| 3829 | % % |
| 3830 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3831 | % |
| 3832 | % TellBlob() obtains the current value of the blob or file position. |
| 3833 | % |
| 3834 | % The format of the TellBlob method is: |
| 3835 | % |
| 3836 | % MagickOffsetType TellBlob(const Image *image) |
| 3837 | % |
| 3838 | % A description of each parameter follows: |
| 3839 | % |
| 3840 | % o image: the image. |
| 3841 | % |
| 3842 | */ |
| 3843 | MagickExport MagickOffsetType TellBlob(const Image *image) |
| 3844 | { |
| 3845 | MagickOffsetType |
| 3846 | offset; |
| 3847 | |
| 3848 | assert(image != (Image *) NULL); |
| 3849 | assert(image->signature == MagickSignature); |
| 3850 | if (image->debug != MagickFalse) |
| 3851 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 3852 | assert(image->blob != (BlobInfo *) NULL); |
| 3853 | assert(image->blob->type != UndefinedStream); |
| 3854 | offset=(-1); |
| 3855 | switch (image->blob->type) |
| 3856 | { |
| 3857 | case UndefinedStream: |
| 3858 | break; |
| 3859 | case FileStream: |
| 3860 | { |
| 3861 | offset=ftell(image->blob->file); |
| 3862 | break; |
| 3863 | } |
| 3864 | case StandardStream: |
| 3865 | case PipeStream: |
| 3866 | break; |
| 3867 | case ZipStream: |
| 3868 | { |
| 3869 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 3870 | offset=(MagickOffsetType) gztell(image->blob->gzfile); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3871 | #endif |
| 3872 | break; |
| 3873 | } |
| 3874 | case BZipStream: |
| 3875 | break; |
| 3876 | case FifoStream: |
| 3877 | break; |
| 3878 | case BlobStream: |
| 3879 | { |
| 3880 | offset=image->blob->offset; |
| 3881 | break; |
| 3882 | } |
| 3883 | } |
| 3884 | return(offset); |
| 3885 | } |
| 3886 | |
| 3887 | /* |
| 3888 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3889 | % % |
| 3890 | % % |
| 3891 | % % |
| 3892 | + U n m a p B l o b % |
| 3893 | % % |
| 3894 | % % |
| 3895 | % % |
| 3896 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3897 | % |
| 3898 | % UnmapBlob() deallocates the binary large object previously allocated with |
| 3899 | % the MapBlob method. |
| 3900 | % |
| 3901 | % The format of the UnmapBlob method is: |
| 3902 | % |
| 3903 | % MagickBooleanType UnmapBlob(void *map,const size_t length) |
| 3904 | % |
| 3905 | % A description of each parameter follows: |
| 3906 | % |
| 3907 | % o map: the address of the binary large object. |
| 3908 | % |
| 3909 | % o length: the length of the binary large object. |
| 3910 | % |
| 3911 | */ |
| 3912 | MagickExport MagickBooleanType UnmapBlob(void *map,const size_t length) |
| 3913 | { |
| 3914 | #if defined(MAGICKCORE_HAVE_MMAP_FILEIO) |
| 3915 | int |
| 3916 | status; |
| 3917 | |
| 3918 | status=munmap(map,length); |
| 3919 | return(status == -1 ? MagickFalse : MagickTrue); |
| 3920 | #else |
| 3921 | (void) map; |
| 3922 | (void) length; |
| 3923 | return(MagickFalse); |
| 3924 | #endif |
| 3925 | } |
| 3926 | |
| 3927 | /* |
| 3928 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3929 | % % |
| 3930 | % % |
| 3931 | % % |
| 3932 | + W r i t e B l o b % |
| 3933 | % % |
| 3934 | % % |
| 3935 | % % |
| 3936 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3937 | % |
| 3938 | % WriteBlob() writes data to a blob or image file. It returns the number of |
| 3939 | % bytes written. |
| 3940 | % |
| 3941 | % The format of the WriteBlob method is: |
| 3942 | % |
| 3943 | % ssize_t WriteBlob(Image *image,const size_t length, |
| 3944 | % const unsigned char *data) |
| 3945 | % |
| 3946 | % A description of each parameter follows: |
| 3947 | % |
| 3948 | % o image: the image. |
| 3949 | % |
| 3950 | % o length: Specifies an integer representing the number of bytes to |
| 3951 | % write to the file. |
| 3952 | % |
| 3953 | % o data: The address of the data to write to the blob or file. |
| 3954 | % |
| 3955 | */ |
| 3956 | MagickExport ssize_t WriteBlob(Image *image,const size_t length, |
| 3957 | const unsigned char *data) |
| 3958 | { |
| 3959 | int |
| 3960 | c; |
| 3961 | |
| 3962 | register const unsigned char |
| 3963 | *p; |
| 3964 | |
| 3965 | ssize_t |
| 3966 | count; |
| 3967 | |
| 3968 | assert(image != (Image *) NULL); |
| 3969 | assert(image->signature == MagickSignature); |
| 3970 | assert(data != (const unsigned char *) NULL); |
| 3971 | assert(image->blob != (BlobInfo *) NULL); |
| 3972 | assert(image->blob->type != UndefinedStream); |
| 3973 | if (length == 0) |
| 3974 | return(0); |
| 3975 | count=0; |
| 3976 | p=data; |
| 3977 | switch (image->blob->type) |
| 3978 | { |
| 3979 | case UndefinedStream: |
| 3980 | break; |
| 3981 | case FileStream: |
| 3982 | case StandardStream: |
| 3983 | case PipeStream: |
| 3984 | { |
| 3985 | switch (length) |
| 3986 | { |
| 3987 | default: |
| 3988 | { |
| 3989 | count=(ssize_t) fwrite((const char *) data,1,length, |
| 3990 | image->blob->file); |
| 3991 | break; |
| 3992 | } |
| 3993 | case 2: |
| 3994 | { |
| 3995 | c=putc((int) *p++,image->blob->file); |
| 3996 | if (c == EOF) |
| 3997 | break; |
| 3998 | count++; |
| 3999 | } |
| 4000 | case 1: |
| 4001 | { |
| 4002 | c=putc((int) *p++,image->blob->file); |
| 4003 | if (c == EOF) |
| 4004 | break; |
| 4005 | count++; |
| 4006 | } |
| 4007 | case 0: |
| 4008 | break; |
| 4009 | } |
| 4010 | break; |
| 4011 | } |
| 4012 | case ZipStream: |
| 4013 | { |
| 4014 | #if defined(MAGICKCORE_ZLIB_DELEGATE) |
| 4015 | switch (length) |
| 4016 | { |
| 4017 | default: |
| 4018 | { |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 4019 | count=(ssize_t) gzwrite(image->blob->gzfile,(void *) data, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4020 | (unsigned int) length); |
| 4021 | break; |
| 4022 | } |
| 4023 | case 2: |
| 4024 | { |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 4025 | c=gzputc(image->blob->gzfile,(int) *p++); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4026 | if (c == EOF) |
| 4027 | break; |
| 4028 | count++; |
| 4029 | } |
| 4030 | case 1: |
| 4031 | { |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 4032 | c=gzputc(image->blob->gzfile,(int) *p++); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4033 | if (c == EOF) |
| 4034 | break; |
| 4035 | count++; |
| 4036 | } |
| 4037 | case 0: |
| 4038 | break; |
| 4039 | } |
| 4040 | #endif |
| 4041 | break; |
| 4042 | } |
| 4043 | case BZipStream: |
| 4044 | { |
| 4045 | #if defined(MAGICKCORE_BZLIB_DELEGATE) |
cristy | cfd1142 | 2012-01-31 14:34:38 +0000 | [diff] [blame] | 4046 | count=(ssize_t) BZ2_bzwrite(image->blob->bzfile,(void *) data,(int) |
| 4047 | length); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4048 | #endif |
| 4049 | break; |
| 4050 | } |
| 4051 | case FifoStream: |
| 4052 | { |
| 4053 | count=(ssize_t) image->blob->stream(image,data,length); |
| 4054 | break; |
| 4055 | } |
| 4056 | case BlobStream: |
| 4057 | { |
| 4058 | register unsigned char |
| 4059 | *q; |
| 4060 | |
| 4061 | if ((image->blob->offset+(MagickOffsetType) length) >= |
| 4062 | (MagickOffsetType) image->blob->extent) |
| 4063 | { |
| 4064 | if (image->blob->mapped != MagickFalse) |
| 4065 | return(0); |
| 4066 | image->blob->quantum<<=1; |
| 4067 | image->blob->extent+=length+image->blob->quantum; |
| 4068 | image->blob->data=(unsigned char *) ResizeQuantumMemory( |
| 4069 | image->blob->data,image->blob->extent+1,sizeof(*image->blob->data)); |
| 4070 | (void) SyncBlob(image); |
| 4071 | if (image->blob->data == (unsigned char *) NULL) |
| 4072 | { |
| 4073 | (void) DetachBlob(image->blob); |
| 4074 | return(0); |
| 4075 | } |
| 4076 | } |
| 4077 | q=image->blob->data+image->blob->offset; |
cristy | 54aad5e | 2010-09-03 16:02:04 +0000 | [diff] [blame] | 4078 | (void) memcpy(q,p,length); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4079 | image->blob->offset+=length; |
| 4080 | if (image->blob->offset >= (MagickOffsetType) image->blob->length) |
| 4081 | image->blob->length=(size_t) image->blob->offset; |
| 4082 | count=(ssize_t) length; |
| 4083 | } |
| 4084 | } |
| 4085 | return(count); |
| 4086 | } |
| 4087 | |
| 4088 | /* |
| 4089 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4090 | % % |
| 4091 | % % |
| 4092 | % % |
| 4093 | + W r i t e B l o b B y t e % |
| 4094 | % % |
| 4095 | % % |
| 4096 | % % |
| 4097 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4098 | % |
| 4099 | % WriteBlobByte() write an integer to a blob. It returns the number of bytes |
| 4100 | % written (either 0 or 1); |
| 4101 | % |
| 4102 | % The format of the WriteBlobByte method is: |
| 4103 | % |
| 4104 | % ssize_t WriteBlobByte(Image *image,const unsigned char value) |
| 4105 | % |
| 4106 | % A description of each parameter follows. |
| 4107 | % |
| 4108 | % o image: the image. |
| 4109 | % |
| 4110 | % o value: Specifies the value to write. |
| 4111 | % |
| 4112 | */ |
| 4113 | MagickExport ssize_t WriteBlobByte(Image *image,const unsigned char value) |
| 4114 | { |
| 4115 | assert(image != (Image *) NULL); |
| 4116 | assert(image->signature == MagickSignature); |
| 4117 | return(WriteBlobStream(image,1,&value)); |
| 4118 | } |
| 4119 | |
| 4120 | /* |
| 4121 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4122 | % % |
| 4123 | % % |
| 4124 | % % |
| 4125 | + W r i t e B l o b F l o a t % |
| 4126 | % % |
| 4127 | % % |
| 4128 | % % |
| 4129 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4130 | % |
| 4131 | % WriteBlobFloat() writes a float value as a 32-bit quantity in the byte-order |
| 4132 | % specified by the endian member of the image structure. |
| 4133 | % |
| 4134 | % The format of the WriteBlobFloat method is: |
| 4135 | % |
| 4136 | % ssize_t WriteBlobFloat(Image *image,const float value) |
| 4137 | % |
| 4138 | % A description of each parameter follows. |
| 4139 | % |
| 4140 | % o image: the image. |
| 4141 | % |
| 4142 | % o value: Specifies the value to write. |
| 4143 | % |
| 4144 | */ |
| 4145 | MagickExport ssize_t WriteBlobFloat(Image *image,const float value) |
| 4146 | { |
| 4147 | union |
| 4148 | { |
| 4149 | unsigned int |
| 4150 | unsigned_value; |
| 4151 | |
| 4152 | float |
| 4153 | float_value; |
| 4154 | } quantum; |
| 4155 | |
| 4156 | quantum.unsigned_value=0U; |
| 4157 | quantum.float_value=value; |
| 4158 | return(WriteBlobLong(image,quantum.unsigned_value)); |
| 4159 | } |
| 4160 | |
| 4161 | /* |
| 4162 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4163 | % % |
| 4164 | % % |
| 4165 | % % |
| 4166 | + W r i t e B l o b L o n g % |
| 4167 | % % |
| 4168 | % % |
| 4169 | % % |
| 4170 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4171 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 4172 | % WriteBlobLong() writes a ssize_t value as a 32-bit quantity in the byte-order |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4173 | % specified by the endian member of the image structure. |
| 4174 | % |
| 4175 | % The format of the WriteBlobLong method is: |
| 4176 | % |
| 4177 | % ssize_t WriteBlobLong(Image *image,const unsigned int value) |
| 4178 | % |
| 4179 | % A description of each parameter follows. |
| 4180 | % |
| 4181 | % o image: the image. |
| 4182 | % |
| 4183 | % o value: Specifies the value to write. |
| 4184 | % |
| 4185 | */ |
| 4186 | MagickExport ssize_t WriteBlobLong(Image *image,const unsigned int value) |
| 4187 | { |
| 4188 | unsigned char |
| 4189 | buffer[4]; |
| 4190 | |
| 4191 | assert(image != (Image *) NULL); |
| 4192 | assert(image->signature == MagickSignature); |
| 4193 | if (image->endian == LSBEndian) |
| 4194 | { |
| 4195 | buffer[0]=(unsigned char) value; |
| 4196 | buffer[1]=(unsigned char) (value >> 8); |
| 4197 | buffer[2]=(unsigned char) (value >> 16); |
| 4198 | buffer[3]=(unsigned char) (value >> 24); |
| 4199 | return(WriteBlobStream(image,4,buffer)); |
| 4200 | } |
| 4201 | buffer[0]=(unsigned char) (value >> 24); |
| 4202 | buffer[1]=(unsigned char) (value >> 16); |
| 4203 | buffer[2]=(unsigned char) (value >> 8); |
| 4204 | buffer[3]=(unsigned char) value; |
| 4205 | return(WriteBlobStream(image,4,buffer)); |
| 4206 | } |
| 4207 | |
| 4208 | /* |
| 4209 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4210 | % % |
| 4211 | % % |
| 4212 | % % |
| 4213 | + W r i t e B l o b S h o r t % |
| 4214 | % % |
| 4215 | % % |
| 4216 | % % |
| 4217 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4218 | % |
| 4219 | % WriteBlobShort() writes a short value as a 16-bit quantity in the |
| 4220 | % byte-order specified by the endian member of the image structure. |
| 4221 | % |
| 4222 | % The format of the WriteBlobShort method is: |
| 4223 | % |
| 4224 | % ssize_t WriteBlobShort(Image *image,const unsigned short value) |
| 4225 | % |
| 4226 | % A description of each parameter follows. |
| 4227 | % |
| 4228 | % o image: the image. |
| 4229 | % |
| 4230 | % o value: Specifies the value to write. |
| 4231 | % |
| 4232 | */ |
| 4233 | MagickExport ssize_t WriteBlobShort(Image *image,const unsigned short value) |
| 4234 | { |
| 4235 | unsigned char |
| 4236 | buffer[2]; |
| 4237 | |
| 4238 | assert(image != (Image *) NULL); |
| 4239 | assert(image->signature == MagickSignature); |
| 4240 | if (image->endian == LSBEndian) |
| 4241 | { |
| 4242 | buffer[0]=(unsigned char) value; |
| 4243 | buffer[1]=(unsigned char) (value >> 8); |
| 4244 | return(WriteBlobStream(image,2,buffer)); |
| 4245 | } |
| 4246 | buffer[0]=(unsigned char) (value >> 8); |
| 4247 | buffer[1]=(unsigned char) value; |
| 4248 | return(WriteBlobStream(image,2,buffer)); |
| 4249 | } |
| 4250 | |
| 4251 | /* |
| 4252 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4253 | % % |
| 4254 | % % |
| 4255 | % % |
| 4256 | + W r i t e B l o b L S B L o n g % |
| 4257 | % % |
| 4258 | % % |
| 4259 | % % |
| 4260 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4261 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 4262 | % WriteBlobLSBLong() writes a ssize_t value as a 32-bit quantity in |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4263 | % least-significant byte first order. |
| 4264 | % |
| 4265 | % The format of the WriteBlobLSBLong method is: |
| 4266 | % |
| 4267 | % ssize_t WriteBlobLSBLong(Image *image,const unsigned int value) |
| 4268 | % |
| 4269 | % A description of each parameter follows. |
| 4270 | % |
| 4271 | % o image: the image. |
| 4272 | % |
| 4273 | % o value: Specifies the value to write. |
| 4274 | % |
| 4275 | */ |
| 4276 | MagickExport ssize_t WriteBlobLSBLong(Image *image,const unsigned int value) |
| 4277 | { |
| 4278 | unsigned char |
| 4279 | buffer[4]; |
| 4280 | |
| 4281 | assert(image != (Image *) NULL); |
| 4282 | assert(image->signature == MagickSignature); |
| 4283 | buffer[0]=(unsigned char) value; |
| 4284 | buffer[1]=(unsigned char) (value >> 8); |
| 4285 | buffer[2]=(unsigned char) (value >> 16); |
| 4286 | buffer[3]=(unsigned char) (value >> 24); |
| 4287 | return(WriteBlobStream(image,4,buffer)); |
| 4288 | } |
| 4289 | |
| 4290 | /* |
| 4291 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4292 | % % |
| 4293 | % % |
| 4294 | % % |
| 4295 | + W r i t e B l o b L S B S h o r t % |
| 4296 | % % |
| 4297 | % % |
| 4298 | % % |
| 4299 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4300 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 4301 | % WriteBlobLSBShort() writes a ssize_t value as a 16-bit quantity in |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4302 | % least-significant byte first order. |
| 4303 | % |
| 4304 | % The format of the WriteBlobLSBShort method is: |
| 4305 | % |
| 4306 | % ssize_t WriteBlobLSBShort(Image *image,const unsigned short value) |
| 4307 | % |
| 4308 | % A description of each parameter follows. |
| 4309 | % |
| 4310 | % o image: the image. |
| 4311 | % |
| 4312 | % o value: Specifies the value to write. |
| 4313 | % |
| 4314 | */ |
| 4315 | MagickExport ssize_t WriteBlobLSBShort(Image *image,const unsigned short value) |
| 4316 | { |
| 4317 | unsigned char |
| 4318 | buffer[2]; |
| 4319 | |
| 4320 | assert(image != (Image *) NULL); |
| 4321 | assert(image->signature == MagickSignature); |
| 4322 | buffer[0]=(unsigned char) value; |
| 4323 | buffer[1]=(unsigned char) (value >> 8); |
| 4324 | return(WriteBlobStream(image,2,buffer)); |
| 4325 | } |
| 4326 | |
| 4327 | /* |
| 4328 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4329 | % % |
| 4330 | % % |
| 4331 | % % |
| 4332 | + W r i t e B l o b M S B L o n g % |
| 4333 | % % |
| 4334 | % % |
| 4335 | % % |
| 4336 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4337 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 4338 | % WriteBlobMSBLong() writes a ssize_t value as a 32-bit quantity in |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4339 | % most-significant byte first order. |
| 4340 | % |
| 4341 | % The format of the WriteBlobMSBLong method is: |
| 4342 | % |
| 4343 | % ssize_t WriteBlobMSBLong(Image *image,const unsigned int value) |
| 4344 | % |
| 4345 | % A description of each parameter follows. |
| 4346 | % |
| 4347 | % o value: Specifies the value to write. |
| 4348 | % |
| 4349 | % o image: the image. |
| 4350 | % |
| 4351 | */ |
| 4352 | MagickExport ssize_t WriteBlobMSBLong(Image *image,const unsigned int value) |
| 4353 | { |
| 4354 | unsigned char |
| 4355 | buffer[4]; |
| 4356 | |
| 4357 | assert(image != (Image *) NULL); |
| 4358 | assert(image->signature == MagickSignature); |
| 4359 | buffer[0]=(unsigned char) (value >> 24); |
| 4360 | buffer[1]=(unsigned char) (value >> 16); |
| 4361 | buffer[2]=(unsigned char) (value >> 8); |
| 4362 | buffer[3]=(unsigned char) value; |
| 4363 | return(WriteBlobStream(image,4,buffer)); |
| 4364 | } |
| 4365 | |
| 4366 | /* |
| 4367 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4368 | % % |
| 4369 | % % |
| 4370 | % % |
cristy | 2ca4992 | 2010-03-06 02:54:01 +0000 | [diff] [blame] | 4371 | + W r i t e B l o b M S B L o n g L o n g % |
| 4372 | % % |
| 4373 | % % |
| 4374 | % % |
| 4375 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4376 | % |
| 4377 | % WriteBlobMSBLongLong() writes a long long value as a 64-bit quantity in |
| 4378 | % most-significant byte first order. |
| 4379 | % |
| 4380 | % The format of the WriteBlobMSBLongLong method is: |
| 4381 | % |
| 4382 | % ssize_t WriteBlobMSBLongLong(Image *image,const MagickSizeType value) |
| 4383 | % |
| 4384 | % A description of each parameter follows. |
| 4385 | % |
| 4386 | % o value: Specifies the value to write. |
| 4387 | % |
| 4388 | % o image: the image. |
| 4389 | % |
| 4390 | */ |
| 4391 | MagickExport ssize_t WriteBlobMSBLongLong(Image *image, |
| 4392 | const MagickSizeType value) |
| 4393 | { |
| 4394 | unsigned char |
| 4395 | buffer[8]; |
| 4396 | |
| 4397 | assert(image != (Image *) NULL); |
| 4398 | assert(image->signature == MagickSignature); |
| 4399 | buffer[0]=(unsigned char) (value >> 56); |
| 4400 | buffer[1]=(unsigned char) (value >> 48); |
| 4401 | buffer[2]=(unsigned char) (value >> 40); |
| 4402 | buffer[3]=(unsigned char) (value >> 32); |
| 4403 | buffer[4]=(unsigned char) (value >> 24); |
| 4404 | buffer[5]=(unsigned char) (value >> 16); |
| 4405 | buffer[6]=(unsigned char) (value >> 8); |
| 4406 | buffer[7]=(unsigned char) value; |
| 4407 | return(WriteBlobStream(image,8,buffer)); |
| 4408 | } |
| 4409 | |
| 4410 | /* |
| 4411 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4412 | % % |
| 4413 | % % |
| 4414 | % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4415 | + W r i t e B l o b M S B S h o r t % |
| 4416 | % % |
| 4417 | % % |
| 4418 | % % |
| 4419 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4420 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 4421 | % WriteBlobMSBShort() writes a ssize_t value as a 16-bit quantity in |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 4422 | % most-significant byte first order. |
| 4423 | % |
| 4424 | % The format of the WriteBlobMSBShort method is: |
| 4425 | % |
| 4426 | % ssize_t WriteBlobMSBShort(Image *image,const unsigned short value) |
| 4427 | % |
| 4428 | % A description of each parameter follows. |
| 4429 | % |
| 4430 | % o value: Specifies the value to write. |
| 4431 | % |
| 4432 | % o file: Specifies the file to write the data to. |
| 4433 | % |
| 4434 | */ |
| 4435 | MagickExport ssize_t WriteBlobMSBShort(Image *image,const unsigned short value) |
| 4436 | { |
| 4437 | unsigned char |
| 4438 | buffer[2]; |
| 4439 | |
| 4440 | assert(image != (Image *) NULL); |
| 4441 | assert(image->signature == MagickSignature); |
| 4442 | buffer[0]=(unsigned char) (value >> 8); |
| 4443 | buffer[1]=(unsigned char) value; |
| 4444 | return(WriteBlobStream(image,2,buffer)); |
| 4445 | } |
| 4446 | |
| 4447 | /* |
| 4448 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4449 | % % |
| 4450 | % % |
| 4451 | % % |
| 4452 | + W r i t e B l o b S t r i n g % |
| 4453 | % % |
| 4454 | % % |
| 4455 | % % |
| 4456 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 4457 | % |
| 4458 | % WriteBlobString() write a string to a blob. It returns the number of |
| 4459 | % characters written. |
| 4460 | % |
| 4461 | % The format of the WriteBlobString method is: |
| 4462 | % |
| 4463 | % ssize_t WriteBlobString(Image *image,const char *string) |
| 4464 | % |
| 4465 | % A description of each parameter follows. |
| 4466 | % |
| 4467 | % o image: the image. |
| 4468 | % |
| 4469 | % o string: Specifies the string to write. |
| 4470 | % |
| 4471 | */ |
| 4472 | MagickExport ssize_t WriteBlobString(Image *image,const char *string) |
| 4473 | { |
| 4474 | assert(image != (Image *) NULL); |
| 4475 | assert(image->signature == MagickSignature); |
| 4476 | assert(string != (const char *) NULL); |
| 4477 | return(WriteBlobStream(image,strlen(string),(const unsigned char *) string)); |
| 4478 | } |