string.c revision 104f8932a48379d3355160642b3de6f0611a7d19
1/* 2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 3% % 4% % 5% % 6% SSSSS TTTTT RRRR IIIII N N GGGG % 7% SS T R R I NN N G % 8% SSS T RRRR I N N N G GGG % 9% SS T R R I N NN G G % 10% SSSSS T R R IIIII N N GGGG % 11% % 12% % 13% MagickCore String Methods % 14% % 15% Software Design % 16% John Cristy % 17% August 2003 % 18% % 19% % 20% Copyright 1999-2012 ImageMagick Studio LLC, a non-profit organization % 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 include declarations. 41*/ 42#include "MagickCore/studio.h" 43#include "MagickCore/blob.h" 44#include "MagickCore/blob-private.h" 45#include "MagickCore/exception.h" 46#include "MagickCore/exception-private.h" 47#include "MagickCore/list.h" 48#include "MagickCore/locale_.h" 49#include "MagickCore/log.h" 50#include "MagickCore/memory_.h" 51#include "MagickCore/nt-base-private.h" 52#include "MagickCore/property.h" 53#include "MagickCore/resource_.h" 54#include "MagickCore/signature-private.h" 55#include "MagickCore/string_.h" 56#include "MagickCore/string-private.h" 57#include "MagickCore/utility-private.h" 58 59/* 60 static declarations. 61*/ 62#if !defined(MAGICKCORE_HAVE_STRCASECMP) || !defined(MAGICKCORE_HAVE_STRNCASECMP) 63static const unsigned char 64 asciimap[] = 65 { 66 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 67 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 68 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 69 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 70 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 71 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 72 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 73 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 74 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 75 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 76 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 77 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 78 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 79 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 80 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 81 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 82 0xc0, 0xe1, 0xe2, 0xe3, 0xe4, 0xc5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 83 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 84 0xf8, 0xf9, 0xfa, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 85 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 86 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 87 0xfc, 0xfd, 0xfe, 0xff, 88 }; 89#endif 90 91/* 92%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 93% % 94% % 95% % 96% A c q u i r e S t r i n g % 97% % 98% % 99% % 100%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 101% 102% AcquireString() returns an new extented string, containing a clone of the 103% given string. 104% 105% An extended string is the string length, plus an extra MaxTextExtent space 106% to allow for the string to be activally worked on. 107% 108% The returned string shoud be freed using DestoryString(). 109% 110% The format of the AcquireString method is: 111% 112% char *AcquireString(const char *source) 113% 114% A description of each parameter follows: 115% 116% o source: A character string. 117% 118*/ 119MagickExport char *AcquireString(const char *source) 120{ 121 char 122 *destination; 123 124 size_t 125 length; 126 127 length=0; 128 if (source != (char *) NULL) 129 length+=strlen(source); 130 if (~length < MaxTextExtent) 131 ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); 132 destination=(char *) AcquireQuantumMemory(length+MaxTextExtent, 133 sizeof(*destination)); 134 if (destination == (char *) NULL) 135 ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); 136 *destination='\0'; 137 if (source != (char *) NULL) 138 (void) memcpy(destination,source,length*sizeof(*destination)); 139 destination[length]='\0'; 140 return(destination); 141} 142 143/* 144%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 145% % 146% % 147% % 148% A c q u i r e S t r i n g I n f o % 149% % 150% % 151% % 152%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 153% 154% AcquireStringInfo() allocates the StringInfo structure. 155% 156% The format of the AcquireStringInfo method is: 157% 158% StringInfo *AcquireStringInfo(const size_t length) 159% 160% A description of each parameter follows: 161% 162% o length: the string length. 163% 164*/ 165MagickExport StringInfo *AcquireStringInfo(const size_t length) 166{ 167 StringInfo 168 *string_info; 169 170 string_info=(StringInfo *) AcquireMagickMemory(sizeof(*string_info)); 171 if (string_info == (StringInfo *) NULL) 172 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); 173 (void) ResetMagickMemory(string_info,0,sizeof(*string_info)); 174 string_info->signature=MagickSignature; 175 string_info->length=length; 176 if (string_info->length != 0) 177 { 178 string_info->datum=(unsigned char *) NULL; 179 if (~string_info->length >= (MaxTextExtent-1)) 180 string_info->datum=(unsigned char *) AcquireQuantumMemory( 181 string_info->length+MaxTextExtent,sizeof(*string_info->datum)); 182 if (string_info->datum == (unsigned char *) NULL) 183 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); 184 } 185 return(string_info); 186} 187 188/* 189%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 190% % 191% % 192% % 193% B l o b T o S t r i n g I n f o % 194% % 195% % 196% % 197%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 198% 199% BlobToStringInfo() returns the contents of a blob as a StringInfo structure 200% with MaxTextExtent extra space. 201% 202% The format of the BlobToStringInfo method is: 203% 204% StringInfo *BlobToStringInfo(const void *blob,const size_t length) 205% 206% A description of each parameter follows: 207% 208% o blob: the blob. 209% 210% o length: the length of the blob. 211% 212*/ 213MagickExport StringInfo *BlobToStringInfo(const void *blob,const size_t length) 214{ 215 StringInfo 216 *string_info; 217 218 string_info=AcquireStringInfo(0); 219 string_info->length=length; 220 if (~string_info->length >= (MaxTextExtent-1)) 221 string_info->datum=(unsigned char *) AcquireQuantumMemory( 222 string_info->length+MaxTextExtent,sizeof(*string_info->datum)); 223 if (string_info->datum == (unsigned char *) NULL) 224 { 225 string_info=DestroyStringInfo(string_info); 226 return((StringInfo *) NULL); 227 } 228 if (blob != (const void *) NULL) 229 (void) memcpy(string_info->datum,blob,length); 230 return(string_info); 231} 232 233/* 234%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 235% % 236% % 237% % 238% C l o n e S t r i n g % 239% % 240% % 241% % 242%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 243% 244% CloneString() replaces or frees the destination string to make it 245% a clone of the input string plus MaxTextExtent more space so the string may 246% be worked on on. 247% 248% If source is a NULL pointer the destination string will be freed and set to 249% a NULL pointer. A pointer to the stored in the destination is also returned. 250% 251% When finished the non-NULL string should be freed using DestoryString() 252% or using CloneString() with a NULL pointed for the source. 253% 254% The format of the CloneString method is: 255% 256% char *CloneString(char **destination,const char *source) 257% 258% A description of each parameter follows: 259% 260% o destination: A pointer to a character string. 261% 262% o source: A character string. 263% 264*/ 265MagickExport char *CloneString(char **destination,const char *source) 266{ 267 size_t 268 length; 269 270 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 271 assert(destination != (char **) NULL); 272 if (source == (const char *) NULL) 273 { 274 if (*destination != (char *) NULL) 275 *destination=DestroyString(*destination); 276 return(*destination); 277 } 278 if (*destination == (char *) NULL) 279 { 280 *destination=AcquireString(source); 281 return(*destination); 282 } 283 length=strlen(source); 284 if (~length < MaxTextExtent) 285 ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); 286 *destination=(char *) ResizeQuantumMemory(*destination,length+MaxTextExtent, 287 sizeof(**destination)); 288 if (*destination == (char *) NULL) 289 ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); 290 if (length != 0) 291 (void) memcpy(*destination,source,length*sizeof(**destination)); 292 (*destination)[length]='\0'; 293 return(*destination); 294} 295 296/* 297%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 298% % 299% % 300% % 301% C l o n e S t r i n g I n f o % 302% % 303% % 304% % 305%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 306% 307% CloneStringInfo() clones a copy of the StringInfo structure. 308% 309% The format of the CloneStringInfo method is: 310% 311% StringInfo *CloneStringInfo(const StringInfo *string_info) 312% 313% A description of each parameter follows: 314% 315% o string_info: the string info. 316% 317*/ 318MagickExport StringInfo *CloneStringInfo(const StringInfo *string_info) 319{ 320 StringInfo 321 *clone_info; 322 323 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 324 assert(string_info != (StringInfo *) NULL); 325 assert(string_info->signature == MagickSignature); 326 clone_info=AcquireStringInfo(string_info->length); 327 if (string_info->length != 0) 328 (void) memcpy(clone_info->datum,string_info->datum,string_info->length+1); 329 return(clone_info); 330} 331 332/* 333%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 334% % 335% % 336% % 337% C o m p a r e S t r i n g I n f o % 338% % 339% % 340% % 341%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 342% 343% CompareStringInfo() compares the two datums target and source. It returns 344% an integer less than, equal to, or greater than zero if target is found, 345% respectively, to be less than, to match, or be greater than source. 346% 347% The format of the CompareStringInfo method is: 348% 349% int CompareStringInfo(const StringInfo *target,const StringInfo *source) 350% 351% A description of each parameter follows: 352% 353% o target: the target string. 354% 355% o source: the source string. 356% 357*/ 358 359static inline size_t MagickMin(const size_t x,const size_t y) 360{ 361 if (x < y) 362 return(x); 363 return(y); 364} 365 366MagickExport int CompareStringInfo(const StringInfo *target, 367 const StringInfo *source) 368{ 369 int 370 status; 371 372 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 373 assert(target != (StringInfo *) NULL); 374 assert(target->signature == MagickSignature); 375 assert(source != (StringInfo *) NULL); 376 assert(source->signature == MagickSignature); 377 status=memcmp(target->datum,source->datum,MagickMin(target->length, 378 source->length)); 379 if (status != 0) 380 return(status); 381 if (target->length == source->length) 382 return(0); 383 return(target->length < source->length ? -1 : 1); 384} 385 386/* 387%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 388% % 389% % 390% % 391% C o n c a t e n a t e M a g i c k S t r i n g % 392% % 393% % 394% % 395%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 396% 397% ConcatenateMagickString() concatenates the source string to the destination 398% string. The destination buffer is always null-terminated even if the 399% string must be truncated. 400% 401% The format of the ConcatenateMagickString method is: 402% 403% size_t ConcatenateMagickString(char *destination,const char *source, 404% const size_t length) 405% 406% A description of each parameter follows: 407% 408% o destination: the destination string. 409% 410% o source: the source string. 411% 412% o length: the length of the destination string. 413% 414*/ 415MagickExport size_t ConcatenateMagickString(char *destination, 416 const char *source,const size_t length) 417{ 418 register char 419 *q; 420 421 register const char 422 *p; 423 424 register size_t 425 i; 426 427 size_t 428 count; 429 430 assert(destination != (char *) NULL); 431 assert(source != (const char *) NULL); 432 assert(length >= 1); 433 p=source; 434 q=destination; 435 i=length; 436 while ((i-- != 0) && (*q != '\0')) 437 q++; 438 count=(size_t) (q-destination); 439 i=length-count; 440 if (i == 0) 441 return(count+strlen(p)); 442 while (*p != '\0') 443 { 444 if (i != 1) 445 { 446 *q++=(*p); 447 i--; 448 } 449 p++; 450 } 451 *q='\0'; 452 return(count+(p-source)); 453} 454 455/* 456%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 457% % 458% % 459% % 460% C o n c a t e n a t e S t r i n g % 461% % 462% % 463% % 464%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 465% 466% ConcatenateString() appends a copy of string source, including the 467% terminating null character, to the end of string destination. 468% 469% The format of the ConcatenateString method is: 470% 471% MagickBooleanType ConcatenateString(char **destination, 472% const char *source) 473% 474% A description of each parameter follows: 475% 476% o destination: A pointer to a character string. 477% 478% o source: A character string. 479% 480*/ 481MagickExport MagickBooleanType ConcatenateString(char **destination, 482 const char *source) 483{ 484 size_t 485 destination_length, 486 length, 487 source_length; 488 489 assert(destination != (char **) NULL); 490 if (source == (const char *) NULL) 491 return(MagickTrue); 492 if (*destination == (char *) NULL) 493 { 494 *destination=AcquireString(source); 495 return(MagickTrue); 496 } 497 destination_length=strlen(*destination); 498 source_length=strlen(source); 499 length=destination_length; 500 if (~length < source_length) 501 ThrowFatalException(ResourceLimitFatalError,"UnableToConcatenateString"); 502 length+=source_length; 503 if (~length < MaxTextExtent) 504 ThrowFatalException(ResourceLimitFatalError,"UnableToConcatenateString"); 505 *destination=(char *) ResizeQuantumMemory(*destination,length+MaxTextExtent, 506 sizeof(**destination)); 507 if (*destination == (char *) NULL) 508 ThrowFatalException(ResourceLimitFatalError,"UnableToConcatenateString"); 509 if (source_length != 0) 510 (void) memcpy((*destination)+destination_length,source,source_length); 511 (*destination)[length]='\0'; 512 return(MagickTrue); 513} 514 515/* 516%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 517% % 518% % 519% % 520% C o n c a t e n a t e S t r i n g I n f o % 521% % 522% % 523% % 524%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 525% 526% ConcatenateStringInfo() concatenates the source string to the destination 527% string. 528% 529% The format of the ConcatenateStringInfo method is: 530% 531% void ConcatenateStringInfo(StringInfo *string_info, 532% const StringInfo *source) 533% 534% A description of each parameter follows: 535% 536% o string_info: the string info. 537% 538% o source: the source string. 539% 540*/ 541MagickExport void ConcatenateStringInfo(StringInfo *string_info, 542 const StringInfo *source) 543{ 544 size_t 545 length; 546 547 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 548 assert(string_info != (StringInfo *) NULL); 549 assert(string_info->signature == MagickSignature); 550 assert(source != (const StringInfo *) NULL); 551 length=string_info->length; 552 if (~length < source->length) 553 ThrowFatalException(ResourceLimitFatalError,"UnableToConcatenateString"); 554 SetStringInfoLength(string_info,length+source->length); 555 (void) memcpy(string_info->datum+length,source->datum,source->length); 556} 557 558/* 559%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 560% % 561% % 562% % 563% C o n f i g u r e F i l e T o S t r i n g I n f o % 564% % 565% % 566% % 567%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 568% 569% ConfigureFileToStringInfo() returns the contents of a configure file as a 570% string. 571% 572% The format of the ConfigureFileToStringInfo method is: 573% 574% StringInfo *ConfigureFileToStringInfo(const char *filename) 575% ExceptionInfo *exception) 576% 577% A description of each parameter follows: 578% 579% o filename: the filename. 580% 581*/ 582MagickExport StringInfo *ConfigureFileToStringInfo(const char *filename) 583{ 584 char 585 *string; 586 587 int 588 file; 589 590 MagickOffsetType 591 offset; 592 593 size_t 594 length; 595 596 StringInfo 597 *string_info; 598 599 void 600 *map; 601 602 assert(filename != (const char *) NULL); 603 file=open_utf8(filename,O_RDONLY | O_BINARY,0); 604 if (file == -1) 605 return((StringInfo *) NULL); 606 offset=(MagickOffsetType) lseek(file,0,SEEK_END); 607 if ((offset < 0) || (offset != (MagickOffsetType) ((ssize_t) offset))) 608 { 609 file=close(file)-1; 610 return((StringInfo *) NULL); 611 } 612 length=(size_t) offset; 613 string=(char *) NULL; 614 if (~length >= (MaxTextExtent-1)) 615 string=(char *) AcquireQuantumMemory(length+MaxTextExtent,sizeof(*string)); 616 if (string == (char *) NULL) 617 { 618 file=close(file)-1; 619 return((StringInfo *) NULL); 620 } 621 map=MapBlob(file,ReadMode,0,length); 622 if (map != (void *) NULL) 623 { 624 (void) memcpy(string,map,length); 625 (void) UnmapBlob(map,length); 626 } 627 else 628 { 629 register size_t 630 i; 631 632 ssize_t 633 count; 634 635 (void) lseek(file,0,SEEK_SET); 636 for (i=0; i < length; i+=count) 637 { 638 count=read(file,string+i,(size_t) MagickMin(length-i,(size_t) 639 SSIZE_MAX)); 640 if (count <= 0) 641 { 642 count=0; 643 if (errno != EINTR) 644 break; 645 } 646 } 647 if (i < length) 648 { 649 file=close(file)-1; 650 string=DestroyString(string); 651 return((StringInfo *) NULL); 652 } 653 } 654 string[length]='\0'; 655 file=close(file)-1; 656 string_info=AcquireStringInfo(0); 657 (void) CopyMagickString(string_info->path,filename,MaxTextExtent); 658 string_info->length=length; 659 string_info->datum=(unsigned char *) string; 660 return(string_info); 661} 662 663/* 664%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 665% % 666% % 667% % 668% C o n s t a n t S t r i n g % 669% % 670% % 671% % 672%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 673% 674% ConstantString() allocates exactly the needed memory for a string and 675% copies the source string to that memory location. A NULL string pointer 676% will allocate an empty string containing just the NUL character. 677% 678% When finished the string should be freed using DestoryString() 679% 680% The format of the ConstantString method is: 681% 682% char *ConstantString(const char *source) 683% 684% A description of each parameter follows: 685% 686% o source: A character string. 687% 688*/ 689MagickExport char *ConstantString(const char *source) 690{ 691 char 692 *destination; 693 694 size_t 695 length; 696 697 length=0; 698 if (source != (char *) NULL) 699 length+=strlen(source); 700 destination=(char *) NULL; 701 if (~length >= 1UL) 702 destination=(char *) AcquireQuantumMemory(length+1UL,sizeof(*destination)); 703 if (destination == (char *) NULL) 704 ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); 705 *destination='\0'; 706 if (source != (char *) NULL) 707 (void) memcpy(destination,source,length*sizeof(*destination)); 708 destination[length]='\0'; 709 return(destination); 710} 711 712/* 713%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 714% % 715% % 716% % 717% C o p y M a g i c k S t r i n g % 718% % 719% % 720% % 721%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 722% 723% CopyMagickString() copies the source string to the destination string, with 724% out exceeding the given pre-declared length. 725% 726% The destination buffer is always null-terminated even if the string must be 727% truncated. The return value is the minimum of the source string length or 728% the length parameter. 729% 730% The format of the CopyMagickString method is: 731% 732% size_t CopyMagickString(const char *destination,char *source, 733% const size_t length) 734% 735% A description of each parameter follows: 736% 737% o destination: the destination string. 738% 739% o source: the source string. 740% 741% o length: the length of the destination string. 742% 743*/ 744MagickExport size_t CopyMagickString(char *destination,const char *source, 745 const size_t length) 746{ 747 register char 748 *q; 749 750 register const char 751 *p; 752 753 register size_t 754 n; 755 756 if (source == (const char *) NULL) 757 return(0); 758 p=source; 759 q=destination; 760 for (n=length; n > 4; n-=4) 761 { 762 *q=(*p++); 763 if (*q == '\0') 764 return((size_t) (p-source-1)); 765 q++; 766 *q=(*p++); 767 if (*q == '\0') 768 return((size_t) (p-source-1)); 769 q++; 770 *q=(*p++); 771 if (*q == '\0') 772 return((size_t) (p-source-1)); 773 q++; 774 *q=(*p++); 775 if (*q == '\0') 776 return((size_t) (p-source-1)); 777 q++; 778 } 779 if (n != 0) 780 for (n--; n != 0; n--) 781 { 782 *q=(*p++); 783 if (*q == '\0') 784 return((size_t) (p-source-1)); 785 q++; 786 } 787 if (length != 0) 788 *q='\0'; 789 return((size_t) (p-source-1)); 790} 791 792/* 793%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 794% % 795% % 796% % 797% D e s t r o y S t r i n g % 798% % 799% % 800% % 801%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 802% 803% DestroyString() destroys memory associated with a string. 804% 805% The format of the DestroyString method is: 806% 807% char *DestroyString(char *string) 808% 809% A description of each parameter follows: 810% 811% o string: the string. 812% 813*/ 814MagickExport char *DestroyString(char *string) 815{ 816 return((char *) RelinquishMagickMemory(string)); 817} 818 819/* 820%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 821% % 822% % 823% % 824% D e s t r o y S t r i n g I n f o % 825% % 826% % 827% % 828%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 829% 830% DestroyStringInfo() destroys memory associated with the StringInfo structure. 831% 832% The format of the DestroyStringInfo method is: 833% 834% StringInfo *DestroyStringInfo(StringInfo *string_info) 835% 836% A description of each parameter follows: 837% 838% o string_info: the string info. 839% 840*/ 841MagickExport StringInfo *DestroyStringInfo(StringInfo *string_info) 842{ 843 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 844 assert(string_info != (StringInfo *) NULL); 845 assert(string_info->signature == MagickSignature); 846 if (string_info->datum != (unsigned char *) NULL) 847 string_info->datum=(unsigned char *) RelinquishMagickMemory( 848 string_info->datum); 849 string_info->signature=(~MagickSignature); 850 string_info=(StringInfo *) RelinquishMagickMemory(string_info); 851 return(string_info); 852} 853 854/* 855%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 856% % 857% % 858% % 859% D e s t r o y S t r i n g L i s t % 860% % 861% % 862% % 863%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 864% 865% DestroyStringList() zeros memory associated with a string list. 866% 867% The format of the DestroyStringList method is: 868% 869% char **DestroyStringList(char **list) 870% 871% A description of each parameter follows: 872% 873% o list: the string list. 874% 875*/ 876MagickExport char **DestroyStringList(char **list) 877{ 878 register ssize_t 879 i; 880 881 assert(list != (char **) NULL); 882 for (i=0; list[i] != (char *) NULL; i++) 883 list[i]=DestroyString(list[i]); 884 list=(char **) RelinquishMagickMemory(list); 885 return(list); 886} 887 888/* 889%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 890% % 891% % 892% % 893% E s c a p e S t r i n g % 894% % 895% % 896% % 897%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 898% 899% EscapeString() allocates memory for a backslash-escaped version of a 900% source text string, copies the escaped version of the text to that 901% memory location while adding backslash characters, and returns the 902% escaped string. 903% 904% The format of the EscapeString method is: 905% 906% char *EscapeString(const char *source,const char escape) 907% 908% A description of each parameter follows: 909% 910% o allocate_string: Method EscapeString returns the escaped string. 911% 912% o source: A character string. 913% 914% o escape: the quoted string termination character to escape (e.g. '"'). 915% 916*/ 917MagickExport char *EscapeString(const char *source,const char escape) 918{ 919 char 920 *destination; 921 922 register char 923 *q; 924 925 register const char 926 *p; 927 928 size_t 929 length; 930 931 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 932 assert(source != (const char *) NULL); 933 length=strlen(source); 934 for (p=source; *p != '\0'; p++) 935 if ((*p == '\\') || (*p == escape)) 936 { 937 if (~length < 1) 938 ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString"); 939 length++; 940 } 941 destination=(char *) NULL; 942 if (~length >= (MaxTextExtent-1)) 943 destination=(char *) AcquireQuantumMemory(length+MaxTextExtent, 944 sizeof(*destination)); 945 if (destination == (char *) NULL) 946 ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString"); 947 *destination='\0'; 948 if (source != (char *) NULL) 949 { 950 q=destination; 951 for (p=source; *p != '\0'; p++) 952 { 953 if ((*p == '\\') || (*p == escape)) 954 *q++='\\'; 955 *q++=(*p); 956 } 957 *q='\0'; 958 } 959 return(destination); 960} 961 962/* 963%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 964% % 965% % 966% % 967% F i l e T o S t r i n g % 968% % 969% % 970% % 971%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 972% 973% FileToString() returns the contents of a file as a string. 974% 975% The format of the FileToString method is: 976% 977% char *FileToString(const char *filename,const size_t extent, 978% ExceptionInfo *exception) 979% 980% A description of each parameter follows: 981% 982% o filename: the filename. 983% 984% o extent: Maximum length of the string. 985% 986% o exception: return any errors or warnings in this structure. 987% 988*/ 989MagickExport char *FileToString(const char *filename,const size_t extent, 990 ExceptionInfo *exception) 991{ 992 size_t 993 length; 994 995 assert(filename != (const char *) NULL); 996 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",filename); 997 assert(exception != (ExceptionInfo *) NULL); 998 return((char *) FileToBlob(filename,extent,&length,exception)); 999} 1000 1001/* 1002%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1003% % 1004% % 1005% % 1006% F i l e T o S t r i n g I n f o % 1007% % 1008% % 1009% % 1010%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1011% 1012% FileToStringInfo() returns the contents of a file as a string. 1013% 1014% The format of the FileToStringInfo method is: 1015% 1016% StringInfo *FileToStringInfo(const char *filename,const size_t extent, 1017% ExceptionInfo *exception) 1018% 1019% A description of each parameter follows: 1020% 1021% o filename: the filename. 1022% 1023% o extent: Maximum length of the string. 1024% 1025% o exception: return any errors or warnings in this structure. 1026% 1027*/ 1028MagickExport StringInfo *FileToStringInfo(const char *filename, 1029 const size_t extent,ExceptionInfo *exception) 1030{ 1031 StringInfo 1032 *string_info; 1033 1034 assert(filename != (const char *) NULL); 1035 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",filename); 1036 assert(exception != (ExceptionInfo *) NULL); 1037 string_info=AcquireStringInfo(0); 1038 (void) CopyMagickString(string_info->path,filename,MaxTextExtent); 1039 string_info->datum=FileToBlob(filename,extent,&string_info->length,exception); 1040 if (string_info->datum == (unsigned char *) NULL) 1041 { 1042 string_info=DestroyStringInfo(string_info); 1043 return((StringInfo *) NULL); 1044 } 1045 return(string_info); 1046} 1047 1048/* 1049%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1050% % 1051% % 1052% % 1053% F o r m a t M a g i c k S i z e % 1054% % 1055% % 1056% % 1057%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1058% 1059% FormatMagickSize() converts a size to a human readable format, for example, 1060% 14k, 234m, 2.7g, or 3.0t. Scaling is done by repetitively dividing by 1061% 1000. 1062% 1063% The format of the FormatMagickSize method is: 1064% 1065% ssize_t FormatMagickSize(const MagickSizeType size,char *format) 1066% 1067% A description of each parameter follows: 1068% 1069% o size: convert this size to a human readable format. 1070% 1071% o bi: use power of two rather than power of ten. 1072% 1073% o format: human readable format. 1074% 1075*/ 1076MagickExport ssize_t FormatMagickSize(const MagickSizeType size, 1077 const MagickBooleanType bi,char *format) 1078{ 1079 const char 1080 **units; 1081 1082 double 1083 bytes, 1084 length; 1085 1086 register ssize_t 1087 i, 1088 j; 1089 1090 ssize_t 1091 count; 1092 1093 static const char 1094 *bi_units[] = 1095 { 1096 "", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi", (char *) NULL 1097 }, 1098 *traditional_units[] = 1099 { 1100 "", "K", "M", "G", "T", "P", "E", "Z", "Y", (char *) NULL 1101 }; 1102 1103 bytes=1000.0; 1104 units=traditional_units; 1105 if (bi != MagickFalse) 1106 { 1107 bytes=1024.0; 1108 units=bi_units; 1109 } 1110#if defined(_MSC_VER) && (_MSC_VER == 1200) 1111 length=(double) ((MagickOffsetType) size); 1112#else 1113 length=(double) size; 1114#endif 1115 for (i=0; (length >= bytes) && (units[i+1] != (const char *) NULL); i++) 1116 length/=bytes; 1117 for (j=2; j < 12; j++) 1118 { 1119 count=FormatLocaleString(format,MaxTextExtent,"%.*g%sB",(int) (i+j),length, 1120 units[i]); 1121 if (strchr(format,'+') == (char *) NULL) 1122 break; 1123 } 1124 return(count); 1125} 1126 1127/* 1128%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1129% % 1130% % 1131% % 1132% F o r m a t M a g i c k T i m e % 1133% % 1134% % 1135% % 1136%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1137% 1138% FormatMagickTime() returns the specified time in the Internet date/time 1139% format and the length of the timestamp. 1140% 1141% The format of the FormatMagickTime method is: 1142% 1143% ssize_t FormatMagickTime(const time_t time,const size_t length, 1144% char *timestamp) 1145% 1146% A description of each parameter follows. 1147% 1148% o time: the time since the Epoch (00:00:00 UTC, January 1, 1970), 1149% measured in seconds. 1150% 1151% o length: the maximum length of the string. 1152% 1153% o timestamp: Return the Internet date/time here. 1154% 1155*/ 1156MagickExport ssize_t FormatMagickTime(const time_t time,const size_t length, 1157 char *timestamp) 1158{ 1159 ssize_t 1160 count; 1161 1162 struct tm 1163 gm_time, 1164 local_time; 1165 1166 time_t 1167 timezone; 1168 1169 assert(timestamp != (char *) NULL); 1170 (void) ResetMagickMemory(&local_time,0,sizeof(local_time)); 1171 (void) ResetMagickMemory(&gm_time,0,sizeof(gm_time)); 1172#if defined(MAGICKCORE_HAVE_LOCALTIME_R) 1173 (void) localtime_r(&time,&local_time); 1174#else 1175 { 1176 struct tm 1177 *my_time; 1178 1179 my_time=localtime(&time); 1180 if (my_time != (struct tm *) NULL) 1181 (void) memcpy(&local_time,my_time,sizeof(local_time)); 1182 } 1183#endif 1184#if defined(MAGICKCORE_HAVE_GMTIME_R) 1185 (void) gmtime_r(&time,&gm_time); 1186#else 1187 { 1188 struct tm 1189 *my_time; 1190 1191 my_time=gmtime(&time); 1192 if (my_time != (struct tm *) NULL) 1193 (void) memcpy(&gm_time,my_time,sizeof(gm_time)); 1194 } 1195#endif 1196 timezone=(time_t) ((local_time.tm_min-gm_time.tm_min)/60+ 1197 local_time.tm_hour-gm_time.tm_hour+24*((local_time.tm_year- 1198 gm_time.tm_year) != 0 ? (local_time.tm_year-gm_time.tm_year) : 1199 (local_time.tm_yday-gm_time.tm_yday))); 1200 count=FormatLocaleString(timestamp,length, 1201 "%04d-%02d-%02dT%02d:%02d:%02d%+03ld:00",local_time.tm_year+1900, 1202 local_time.tm_mon+1,local_time.tm_mday,local_time.tm_hour, 1203 local_time.tm_min,local_time.tm_sec,(long) timezone); 1204 return(count); 1205} 1206 1207/* 1208%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1209% % 1210% % 1211% % 1212% G e t E n v i r o n m e n t V a l u e % 1213% % 1214% % 1215% % 1216%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1217% 1218% GetEnvironmentValue() returns the environment string that matches the 1219% specified name. 1220% 1221% The format of the GetEnvironmentValue method is: 1222% 1223% char *GetEnvironmentValue(const char *name) 1224% 1225% A description of each parameter follows: 1226% 1227% o name: the environment name. 1228% 1229*/ 1230MagickExport char *GetEnvironmentValue(const char *name) 1231{ 1232 const char 1233 *environment; 1234 1235 environment=getenv(name); 1236 if (environment == (const char *) NULL) 1237 return((char *) NULL); 1238 return(ConstantString(environment)); 1239} 1240 1241/* 1242%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1243% % 1244% % 1245% % 1246% G e t S t r i n g I n f o D a t u m % 1247% % 1248% % 1249% % 1250%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1251% 1252% GetStringInfoDatum() returns the datum associated with the string. 1253% 1254% The format of the GetStringInfoDatum method is: 1255% 1256% unsigned char *GetStringInfoDatum(const StringInfo *string_info) 1257% 1258% A description of each parameter follows: 1259% 1260% o string_info: the string info. 1261% 1262*/ 1263MagickExport unsigned char *GetStringInfoDatum(const StringInfo *string_info) 1264{ 1265 assert(string_info != (StringInfo *) NULL); 1266 assert(string_info->signature == MagickSignature); 1267 return(string_info->datum); 1268} 1269 1270/* 1271%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1272% % 1273% % 1274% % 1275% G e t S t r i n g I n f o L e n g t h % 1276% % 1277% % 1278% % 1279%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1280% 1281% GetStringInfoLength() returns the string length. 1282% 1283% The format of the GetStringInfoLength method is: 1284% 1285% size_t GetStringInfoLength(const StringInfo *string_info) 1286% 1287% A description of each parameter follows: 1288% 1289% o string_info: the string info. 1290% 1291*/ 1292MagickExport size_t GetStringInfoLength(const StringInfo *string_info) 1293{ 1294 assert(string_info != (StringInfo *) NULL); 1295 assert(string_info->signature == MagickSignature); 1296 return(string_info->length); 1297} 1298 1299/* 1300%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1301% % 1302% % 1303% % 1304% G e t S t r i n g I n f o P a t h % 1305% % 1306% % 1307% % 1308%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1309% 1310% GetStringInfoPath() returns the path associated with the string. 1311% 1312% The format of the GetStringInfoPath method is: 1313% 1314% const char *GetStringInfoPath(const StringInfo *string_info) 1315% 1316% A description of each parameter follows: 1317% 1318% o string_info: the string info. 1319% 1320*/ 1321MagickExport const char *GetStringInfoPath(const StringInfo *string_info) 1322{ 1323 assert(string_info != (StringInfo *) NULL); 1324 assert(string_info->signature == MagickSignature); 1325 return(string_info->path); 1326} 1327 1328/* 1329%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1330% % 1331% % 1332% % 1333+ I n t e r p r e t S i P r e f i x V a l u e % 1334% % 1335% % 1336% % 1337%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1338% 1339% InterpretSiPrefixValue() converts the initial portion of the string to a 1340% double representation. It also recognizes SI prefixes (e.g. B, KB, MiB, 1341% etc.). 1342% 1343% The format of the InterpretSiPrefixValue method is: 1344% 1345% double InterpretSiPrefixValue(const char *value,char **sentinal) 1346% 1347% A description of each parameter follows: 1348% 1349% o value: the string value. 1350% 1351% o sentinal: if sentinal is not NULL, return a pointer to the character 1352% after the last character used in the conversion. 1353% 1354*/ 1355MagickExport double InterpretSiPrefixValue(const char *restrict string, 1356 char **restrict sentinal) 1357{ 1358 char 1359 *q; 1360 1361 double 1362 value; 1363 1364 value=InterpretLocaleValue(string,&q); 1365 if (q != string) 1366 { 1367 if ((*q >= 'E') && (*q <= 'z')) 1368 { 1369 double 1370 e; 1371 1372 switch ((int) ((unsigned char) *q)) 1373 { 1374 case 'y': e=(-24.0); break; 1375 case 'z': e=(-21.0); break; 1376 case 'a': e=(-18.0); break; 1377 case 'f': e=(-15.0); break; 1378 case 'p': e=(-12.0); break; 1379 case 'n': e=(-9.0); break; 1380 case 'u': e=(-6.0); break; 1381 case 'm': e=(-3.0); break; 1382 case 'c': e=(-2.0); break; 1383 case 'd': e=(-1.0); break; 1384 case 'h': e=2.0; break; 1385 case 'k': e=3.0; break; 1386 case 'K': e=3.0; break; 1387 case 'M': e=6.0; break; 1388 case 'G': e=9.0; break; 1389 case 'T': e=12.0; break; 1390 case 'P': e=15.0; break; 1391 case 'E': e=18.0; break; 1392 case 'Z': e=21.0; break; 1393 case 'Y': e=24.0; break; 1394 default: e=0.0; break; 1395 } 1396 if (e >= MagickEpsilon) 1397 { 1398 if (q[1] == 'i') 1399 { 1400 value*=pow(2.0,e/0.3); 1401 q+=2; 1402 } 1403 else 1404 { 1405 value*=pow(10.0,e); 1406 q++; 1407 } 1408 } 1409 } 1410 if (*q == 'B') 1411 q++; 1412 } 1413 if (sentinal != (char **) NULL) 1414 *sentinal=q; 1415 return(value); 1416} 1417 1418/* 1419%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1420% % 1421% % 1422% % 1423% I s S t r i n g T r u e % 1424% % 1425% % 1426% % 1427%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1428% 1429% IsStringTrue() returns MagickTrue if the value is "true", "on", "yes" or 1430% "1". Any other string or undefined returns MagickFalse. 1431% 1432% Typically this is used to look at strings (options or artifacts) which 1433% has a default value of "false", when not defined. 1434% 1435% The format of the IsStringTrue method is: 1436% 1437% MagickBooleanType IsStringTrue(const char *value) 1438% 1439% A description of each parameter follows: 1440% 1441% o value: Specifies a pointer to a character array. 1442% 1443*/ 1444MagickExport MagickBooleanType IsStringTrue(const char *value) 1445{ 1446 if (value == (const char *) NULL) 1447 return(MagickFalse); 1448 if (LocaleCompare(value,"true") == 0) 1449 return(MagickTrue); 1450 if (LocaleCompare(value,"on") == 0) 1451 return(MagickTrue); 1452 if (LocaleCompare(value,"yes") == 0) 1453 return(MagickTrue); 1454 if (LocaleCompare(value,"1") == 0) 1455 return(MagickTrue); 1456 return(MagickFalse); 1457} 1458 1459/* 1460%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1461% % 1462% % 1463% % 1464% I s S t r i n g N o t F a l s e % 1465% % 1466% % 1467% % 1468%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1469% 1470% IsStringNotFalse() returns MagickTrue, unless the string specifically 1471% has a value that makes this false. that is if it has a value of 1472% "false", "off", "no" or "0". 1473% 1474% Typically this is used to look at strings (options or artifacts) which 1475% has a default value of "true", when it has not been defined. 1476% 1477% The format of the IsStringNotFalse method is: 1478% 1479% MagickBooleanType IsStringNotFalse(const char *value) 1480% 1481% A description of each parameter follows: 1482% 1483% o value: Specifies a pointer to a character array. 1484% 1485*/ 1486MagickExport MagickBooleanType IsStringNotFalse(const char *value) 1487{ 1488 if (value == (const char *) NULL) 1489 return(MagickTrue); 1490 if (LocaleCompare(value,"false") == 0) 1491 return(MagickFalse); 1492 if (LocaleCompare(value,"off") == 0) 1493 return(MagickFalse); 1494 if (LocaleCompare(value,"no") == 0) 1495 return(MagickFalse); 1496 if (LocaleCompare(value,"0") == 0) 1497 return(MagickFalse); 1498 return(MagickTrue); 1499} 1500 1501/* 1502%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1503% % 1504% % 1505% % 1506% L o c a l e C o m p a r e % 1507% % 1508% % 1509% % 1510%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1511% 1512% LocaleCompare() performs a case-insensitive comparison of two strings 1513% byte-by-byte, according to the ordering of the current locale encoding. 1514% LocaleCompare returns an integer greater than, equal to, or less than 0, 1515% if the string pointed to by p is greater than, equal to, or less than the 1516% string pointed to by q respectively. The sign of a non-zero return value 1517% is determined by the sign of the difference between the values of the first 1518% pair of bytes that differ in the strings being compared. 1519% 1520% The format of the LocaleCompare method is: 1521% 1522% int LocaleCompare(const char *p,const char *q) 1523% 1524% A description of each parameter follows: 1525% 1526% o p: A pointer to a character string. 1527% 1528% o q: A pointer to a character string to compare to p. 1529% 1530*/ 1531MagickExport int LocaleCompare(const char *p,const char *q) 1532{ 1533 if ((p == (char *) NULL) && (q == (char *) NULL)) 1534 return(0); 1535 if (p == (char *) NULL) 1536 return(-1); 1537 if (q == (char *) NULL) 1538 return(1); 1539#if defined(MAGICKCORE_HAVE_STRCASECMP) 1540 return(strcasecmp(p,q)); 1541#else 1542 { 1543 register int 1544 c, 1545 d; 1546 1547 for ( ; ; ) 1548 { 1549 c=(int) *((unsigned char *) p); 1550 d=(int) *((unsigned char *) q); 1551 if ((c == 0) || (AsciiMap[c] != AsciiMap[d])) 1552 break; 1553 p++; 1554 q++; 1555 } 1556 return(AsciiMap[c]-(int) AsciiMap[d]); 1557 } 1558#endif 1559} 1560 1561/* 1562%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1563% % 1564% % 1565% % 1566% L o c a l e L o w e r % 1567% % 1568% % 1569% % 1570%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1571% 1572% LocaleLower() transforms all of the characters in the supplied 1573% null-terminated string, changing all uppercase letters to lowercase. 1574% 1575% The format of the LocaleLower method is: 1576% 1577% void LocaleLower(char *string) 1578% 1579% A description of each parameter follows: 1580% 1581% o string: A pointer to the string to convert to lower-case Locale. 1582% 1583*/ 1584MagickExport void LocaleLower(char *string) 1585{ 1586 register char 1587 *q; 1588 1589 assert(string != (char *) NULL); 1590 for (q=string; *q != '\0'; q++) 1591 *q=(char) tolower((int) *q); 1592} 1593 1594/* 1595%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1596% % 1597% % 1598% % 1599% L o c a l e N C o m p a r e % 1600% % 1601% % 1602% % 1603%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1604% 1605% LocaleNCompare() performs a case-insensitive comparison of two strings 1606% byte-by-byte, according to the ordering of the current locale encoding. 1607% 1608% LocaleNCompare returns an integer greater than, equal to, or less than 0, 1609% if the string pointed to by p is greater than, equal to, or less than the 1610% string pointed to by q respectively. The sign of a non-zero return value 1611% is determined by the sign of the difference between the values of the first 1612% pair of bytes that differ in the strings being compared. 1613% 1614% The LocaleNCompare method makes the same comparison as LocaleCompare but 1615% looks at a maximum of n bytes. Bytes following a null byte are not 1616% compared. 1617% 1618% The format of the LocaleNCompare method is: 1619% 1620% int LocaleNCompare(const char *p,const char *q,const size_t n) 1621% 1622% A description of each parameter follows: 1623% 1624% o p: A pointer to a character string. 1625% 1626% o q: A pointer to a character string to compare to p. 1627% 1628% o length: the number of characters to compare in strings p and q. 1629% 1630*/ 1631MagickExport int LocaleNCompare(const char *p,const char *q,const size_t length) 1632{ 1633 if ((p == (char *) NULL) && (q == (char *) NULL)) 1634 return(0); 1635 if (p == (char *) NULL) 1636 return(-1); 1637 if (q == (char *) NULL) 1638 return(1); 1639#if defined(MAGICKCORE_HAVE_STRNCASECMP) 1640 return(strncasecmp(p,q,length)); 1641#else 1642 { 1643 register int 1644 c, 1645 d; 1646 1647 register size_t 1648 i; 1649 1650 for (i=length; i != 0; i--) 1651 { 1652 c=(int) *((unsigned char *) p); 1653 d=(int) *((unsigned char *) q); 1654 if (AsciiMap[c] != AsciiMap[d]) 1655 return(AsciiMap[c]-(int) AsciiMap[d]); 1656 if (c == 0) 1657 return(0); 1658 p++; 1659 q++; 1660 } 1661 return(0); 1662 } 1663#endif 1664} 1665 1666/* 1667%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1668% % 1669% % 1670% % 1671% L o c a l e U p p e r % 1672% % 1673% % 1674% % 1675%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1676% 1677% LocaleUpper() transforms all of the characters in the supplied 1678% null-terminated string, changing all lowercase letters to uppercase. 1679% 1680% The format of the LocaleUpper method is: 1681% 1682% void LocaleUpper(char *string) 1683% 1684% A description of each parameter follows: 1685% 1686% o string: A pointer to the string to convert to upper-case Locale. 1687% 1688*/ 1689MagickExport void LocaleUpper(char *string) 1690{ 1691 register char 1692 *q; 1693 1694 assert(string != (char *) NULL); 1695 for (q=string; *q != '\0'; q++) 1696 *q=(char) toupper((int) *q); 1697} 1698 1699/* 1700%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1701% % 1702% % 1703% % 1704% P r i n t S t r i n g I n f o % 1705% % 1706% % 1707% % 1708%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1709% 1710% PrintStringInfo() prints the string. 1711% 1712% The format of the PrintStringInfo method is: 1713% 1714% void PrintStringInfo(FILE *file,const char *id, 1715% const StringInfo *string_info) 1716% 1717% A description of each parameter follows: 1718% 1719% o file: the file, typically stdout. 1720% 1721% o id: the string id. 1722% 1723% o string_info: the string info. 1724% 1725*/ 1726MagickExport void PrintStringInfo(FILE *file,const char *id, 1727 const StringInfo *string_info) 1728{ 1729 register const char 1730 *p; 1731 1732 register size_t 1733 i, 1734 j; 1735 1736 assert(id != (const char *) NULL); 1737 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",id); 1738 assert(string_info != (StringInfo *) NULL); 1739 assert(string_info->signature == MagickSignature); 1740 p=(char *) string_info->datum; 1741 for (i=0; i < string_info->length; i++) 1742 { 1743 if (((int) ((unsigned char) *p) < 32) && 1744 (isspace((int) ((unsigned char) *p)) == 0)) 1745 break; 1746 p++; 1747 } 1748 if (i == string_info->length) 1749 { 1750 (void) fputs((char *) string_info->datum,file); 1751 (void) fputc('\n',file); 1752 return; 1753 } 1754 /* 1755 Convert string to a HEX list. 1756 */ 1757 p=(char *) string_info->datum; 1758 for (i=0; i < string_info->length; i+=0x14) 1759 { 1760 (void) FormatLocaleFile(file,"0x%08lx: ",(unsigned long) (0x14*i)); 1761 for (j=1; j <= MagickMin(string_info->length-i,0x14); j++) 1762 { 1763 (void) FormatLocaleFile(file,"%02lx",(unsigned long) (*(p+j)) & 0xff); 1764 if ((j % 0x04) == 0) 1765 (void) fputc(' ',file); 1766 } 1767 for ( ; j <= 0x14; j++) 1768 { 1769 (void) fputc(' ',file); 1770 (void) fputc(' ',file); 1771 if ((j % 0x04) == 0) 1772 (void) fputc(' ',file); 1773 } 1774 (void) fputc(' ',file); 1775 for (j=1; j <= MagickMin(string_info->length-i,0x14); j++) 1776 { 1777 if (isprint((int) ((unsigned char) *p)) != 0) 1778 (void) fputc(*p,file); 1779 else 1780 (void) fputc('-',file); 1781 p++; 1782 } 1783 (void) fputc('\n',file); 1784 } 1785} 1786 1787/* 1788%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1789% % 1790% % 1791% % 1792% R e s e t S t r i n g I n f o % 1793% % 1794% % 1795% % 1796%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1797% 1798% ResetStringInfo() reset the string to all null bytes. 1799% 1800% The format of the ResetStringInfo method is: 1801% 1802% void ResetStringInfo(StringInfo *string_info) 1803% 1804% A description of each parameter follows: 1805% 1806% o string_info: the string info. 1807% 1808*/ 1809MagickExport void ResetStringInfo(StringInfo *string_info) 1810{ 1811 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 1812 assert(string_info != (StringInfo *) NULL); 1813 assert(string_info->signature == MagickSignature); 1814 (void) ResetMagickMemory(string_info->datum,0,string_info->length); 1815} 1816 1817/* 1818%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1819% % 1820% % 1821% % 1822% S e t S t r i n g I n f o % 1823% % 1824% % 1825% % 1826%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1827% 1828% SetStringInfo() copies the source string to the destination string. 1829% 1830% The format of the SetStringInfo method is: 1831% 1832% void SetStringInfo(StringInfo *string_info,const StringInfo *source) 1833% 1834% A description of each parameter follows: 1835% 1836% o string_info: the string info. 1837% 1838% o source: the source string. 1839% 1840*/ 1841MagickExport void SetStringInfo(StringInfo *string_info, 1842 const StringInfo *source) 1843{ 1844 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 1845 assert(string_info != (StringInfo *) NULL); 1846 assert(string_info->signature == MagickSignature); 1847 assert(source != (StringInfo *) NULL); 1848 assert(source->signature == MagickSignature); 1849 if (string_info->length == 0) 1850 return; 1851 (void) ResetMagickMemory(string_info->datum,0,string_info->length); 1852 (void) memcpy(string_info->datum,source->datum,MagickMin(string_info->length, 1853 source->length)); 1854} 1855 1856/* 1857%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1858% % 1859% % 1860% % 1861% S e t S t r i n g I n f o D a t u m % 1862% % 1863% % 1864% % 1865%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1866% 1867% SetStringInfoDatum() copies bytes from the source string for the length of 1868% the destination string. 1869% 1870% The format of the SetStringInfoDatum method is: 1871% 1872% void SetStringInfoDatum(StringInfo *string_info, 1873% const unsigned char *source) 1874% 1875% A description of each parameter follows: 1876% 1877% o string_info: the string info. 1878% 1879% o source: the source string. 1880% 1881*/ 1882MagickExport void SetStringInfoDatum(StringInfo *string_info, 1883 const unsigned char *source) 1884{ 1885 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 1886 assert(string_info != (StringInfo *) NULL); 1887 assert(string_info->signature == MagickSignature); 1888 if (string_info->length != 0) 1889 (void) memcpy(string_info->datum,source,string_info->length); 1890} 1891 1892/* 1893%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1894% % 1895% % 1896% % 1897% S e t S t r i n g I n f o L e n g t h % 1898% % 1899% % 1900% % 1901%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1902% 1903% SetStringInfoLength() set the string length to the specified value. 1904% 1905% The format of the SetStringInfoLength method is: 1906% 1907% void SetStringInfoLength(StringInfo *string_info,const size_t length) 1908% 1909% A description of each parameter follows: 1910% 1911% o string_info: the string info. 1912% 1913% o length: the string length. 1914% 1915*/ 1916MagickExport void SetStringInfoLength(StringInfo *string_info, 1917 const size_t length) 1918{ 1919 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 1920 assert(string_info != (StringInfo *) NULL); 1921 assert(string_info->signature == MagickSignature); 1922 if (~length < MaxTextExtent) 1923 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); 1924 string_info->length=length; 1925 if (string_info->datum == (unsigned char *) NULL) 1926 string_info->datum=(unsigned char *) AcquireQuantumMemory(length+ 1927 MaxTextExtent,sizeof(*string_info->datum)); 1928 else 1929 string_info->datum=(unsigned char *) ResizeQuantumMemory(string_info->datum, 1930 length+MaxTextExtent,sizeof(*string_info->datum)); 1931 if (string_info->datum == (unsigned char *) NULL) 1932 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); 1933} 1934 1935/* 1936%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1937% % 1938% % 1939% % 1940% S e t S t r i n g I n f o D a t u m % 1941% % 1942% % 1943% % 1944%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1945% 1946% SetStringInfoPath() sets the path associated with the string. 1947% 1948% The format of the SetStringInfoPath method is: 1949% 1950% void SetStringInfoPath(StringInfo *string_info,const char *path) 1951% 1952% A description of each parameter follows: 1953% 1954% o string_info: the string info. 1955% 1956% o path: the path. 1957% 1958*/ 1959MagickExport void SetStringInfoPath(StringInfo *string_info,const char *path) 1960{ 1961 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 1962 assert(string_info != (StringInfo *) NULL); 1963 assert(string_info->signature == MagickSignature); 1964 assert(path != (const char *) NULL); 1965 (void) CopyMagickString(string_info->path,path,MaxTextExtent); 1966} 1967 1968/* 1969%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1970% % 1971% % 1972% % 1973% S p l i t S t r i n g I n f o % 1974% % 1975% % 1976% % 1977%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 1978% 1979% SplitStringInfo() splits a string into two and returns it. 1980% 1981% The format of the SplitStringInfo method is: 1982% 1983% StringInfo *SplitStringInfo(StringInfo *string_info,const size_t offset) 1984% 1985% A description of each parameter follows: 1986% 1987% o string_info: the string info. 1988% 1989*/ 1990MagickExport StringInfo *SplitStringInfo(StringInfo *string_info, 1991 const size_t offset) 1992{ 1993 StringInfo 1994 *split_info; 1995 1996 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 1997 assert(string_info != (StringInfo *) NULL); 1998 assert(string_info->signature == MagickSignature); 1999 if (offset > string_info->length) 2000 return((StringInfo *) NULL); 2001 split_info=AcquireStringInfo(offset); 2002 SetStringInfo(split_info,string_info); 2003 (void) memmove(string_info->datum,string_info->datum+offset, 2004 string_info->length-offset+MaxTextExtent); 2005 SetStringInfoLength(string_info,string_info->length-offset); 2006 return(split_info); 2007} 2008 2009/* 2010%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2011% % 2012% % 2013% % 2014% S t r i n g I n f o T o S t r i n g % 2015% % 2016% % 2017% % 2018%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2019% 2020% StringInfoToString() converts a string info string to a C string. 2021% 2022% The format of the StringInfoToString method is: 2023% 2024% char *StringInfoToString(const StringInfo *string_info) 2025% 2026% A description of each parameter follows: 2027% 2028% o string_info: the string. 2029% 2030*/ 2031MagickExport char *StringInfoToString(const StringInfo *string_info) 2032{ 2033 char 2034 *string; 2035 2036 size_t 2037 length; 2038 2039 string=(char *) NULL; 2040 length=string_info->length; 2041 if (~length >= (MaxTextExtent-1)) 2042 string=(char *) AcquireQuantumMemory(length+MaxTextExtent,sizeof(*string)); 2043 if (string == (char *) NULL) 2044 return((char *) NULL); 2045 (void) memcpy(string,(char *) string_info->datum,length*sizeof(*string)); 2046 string[length]='\0'; 2047 return(string); 2048} 2049 2050/* 2051%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2052% % 2053% % 2054% % 2055% S t r i n g I n f o T o H e x S t r i n g % 2056% % 2057% % 2058% % 2059%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2060% 2061% StringInfoToHexString() converts a string info string to a C string. 2062% 2063% The format of the StringInfoToHexString method is: 2064% 2065% char *StringInfoToHexString(const StringInfo *string_info) 2066% 2067% A description of each parameter follows: 2068% 2069% o string_info: the string. 2070% 2071*/ 2072MagickExport char *StringInfoToHexString(const StringInfo *string_info) 2073{ 2074 char 2075 *string; 2076 2077 register const unsigned char 2078 *p; 2079 2080 register ssize_t 2081 i; 2082 2083 register unsigned char 2084 *q; 2085 2086 size_t 2087 length; 2088 2089 unsigned char 2090 hex_digits[16]; 2091 2092 length=string_info->length; 2093 if (~length < MaxTextExtent) 2094 ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); 2095 string=(char *) AcquireQuantumMemory(length+MaxTextExtent,2*sizeof(*string)); 2096 if (string == (char *) NULL) 2097 ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); 2098 hex_digits[0]='0'; 2099 hex_digits[1]='1'; 2100 hex_digits[2]='2'; 2101 hex_digits[3]='3'; 2102 hex_digits[4]='4'; 2103 hex_digits[5]='5'; 2104 hex_digits[6]='6'; 2105 hex_digits[7]='7'; 2106 hex_digits[8]='8'; 2107 hex_digits[9]='9'; 2108 hex_digits[10]='a'; 2109 hex_digits[11]='b'; 2110 hex_digits[12]='c'; 2111 hex_digits[13]='d'; 2112 hex_digits[14]='e'; 2113 hex_digits[15]='f'; 2114 p=string_info->datum; 2115 q=(unsigned char *) string; 2116 for (i=0; i < (ssize_t) string_info->length; i++) 2117 { 2118 *q++=hex_digits[(*p >> 4) & 0x0f]; 2119 *q++=hex_digits[*p & 0x0f]; 2120 p++; 2121 } 2122 *q='\0'; 2123 return(string); 2124} 2125 2126/* 2127%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2128% % 2129% % 2130% % 2131% S t r i n g T o A r g v % 2132% % 2133% % 2134% % 2135%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2136% 2137% StringToArgv() converts a text string into command line arguments. 2138% The 'argv' array of arguments, is returned while the number of arguments 2139% is returned via the provided integer variable pointer. 2140% 2141% Simple 'word' tokenizer, which allows for each word to be optionally 2142% quoted. However it will not allow use of partial quotes, or escape 2143% characters. 2144% 2145% The format of the StringToArgv method is: 2146% 2147% char **StringToArgv(const char *text,int *argc) 2148% 2149% A description of each parameter follows: 2150% 2151% o argv: Method StringToArgv returns the string list unless an error 2152% occurs, otherwise NULL. 2153% 2154% o text: Specifies the string to segment into a list. 2155% 2156% o argc: This integer pointer returns the number of arguments in the 2157% list. 2158% 2159*/ 2160MagickExport char **StringToArgv(const char *text,int *argc) 2161{ 2162 char 2163 **argv; 2164 2165 register const char 2166 *p, 2167 *q; 2168 2169 register ssize_t 2170 i; 2171 2172 *argc=0; 2173 if (text == (char *) NULL) 2174 return((char **) NULL); 2175 /* 2176 Determine the number of arguments. 2177 */ 2178 for (p=text; *p != '\0'; ) 2179 { 2180 while (isspace((int) ((unsigned char) *p)) != 0) 2181 p++; 2182 if (*p == '\0') 2183 break; 2184 (*argc)++; 2185 if (*p == '"') 2186 for (p++; (*p != '"') && (*p != '\0'); p++) ; 2187 if (*p == '\'') 2188 for (p++; (*p != '\'') && (*p != '\0'); p++) ; 2189 while ((isspace((int) ((unsigned char) *p)) == 0) && (*p != '\0')) 2190 p++; 2191 } 2192 (*argc)++; 2193 argv=(char **) AcquireQuantumMemory((size_t) (*argc+1UL),sizeof(*argv)); 2194 if (argv == (char **) NULL) 2195 ThrowFatalException(ResourceLimitFatalError,"UnableToConvertStringToARGV"); 2196 /* 2197 Convert string to an ASCII list. 2198 */ 2199 argv[0]=AcquireString("magick"); 2200 p=text; 2201 for (i=1; i < (ssize_t) *argc; i++) 2202 { 2203 while (isspace((int) ((unsigned char) *p)) != 0) 2204 p++; 2205 q=p; 2206 if (*q == '"') 2207 { 2208 p++; 2209 for (q++; (*q != '"') && (*q != '\0'); q++) ; 2210 } 2211 else 2212 if (*q == '\'') 2213 { 2214 p++; 2215 for (q++; (*q != '\'') && (*q != '\0'); q++) ; 2216 } 2217 else 2218 while ((isspace((int) ((unsigned char) *q)) == 0) && (*q != '\0')) 2219 q++; 2220 argv[i]=(char *) AcquireQuantumMemory((size_t) (q-p)+MaxTextExtent, 2221 sizeof(**argv)); 2222 if (argv[i] == (char *) NULL) 2223 { 2224 for (i--; i >= 0; i--) 2225 argv[i]=DestroyString(argv[i]); 2226 argv=(char **) RelinquishMagickMemory(argv); 2227 ThrowFatalException(ResourceLimitFatalError, 2228 "UnableToConvertStringToARGV"); 2229 } 2230 (void) memcpy(argv[i],p,(size_t) (q-p)); 2231 argv[i][q-p]='\0'; 2232 p=q; 2233 while ((isspace((int) ((unsigned char) *p)) == 0) && (*p != '\0')) 2234 p++; 2235 } 2236 argv[i]=(char *) NULL; 2237 return(argv); 2238} 2239 2240/* 2241%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2242% % 2243% % 2244% % 2245% S t r i n g T o A r r a y O f D o u b l e s % 2246% % 2247% % 2248% % 2249%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2250% 2251% StringToArrayOfDoubles() converts a string of space or comma seperated 2252% numbers into array of floating point numbers (doubles). Any number that 2253% failes to parse properly will produce a syntax error. As will two commas 2254% without a number between them. However a final comma at the end will 2255% not be regarded as an error so as to simplify automatic list generation. 2256% 2257% A NULL value is returned on syntax or memory errors. 2258% 2259% Use RelinquishMagickMemory() to free returned array when finished. 2260% 2261% The format of the StringToArrayOfDoubles method is: 2262% 2263% double *StringToArrayOfDoubles(const char *string, 2264% size_t *count, ExceptionInfo *exception) 2265% 2266% A description of each parameter follows: 2267% 2268% o string: the string containing the comma/space seperated values. 2269% 2270% o count: returns number of arguments in returned array 2271% 2272% o exception: return 'memory failure' exceptions 2273% 2274*/ 2275MagickExport double *StringToArrayOfDoubles(const char *string, 2276 ssize_t *count, ExceptionInfo *exception) 2277{ 2278 const char 2279 *p; 2280 2281 char 2282 *q; 2283 2284 double 2285 *array; 2286 2287 register ssize_t 2288 i; 2289 2290 /* Determine count of values, and check syntax */ 2291 *count=0; 2292 p=string; 2293 i=0; 2294 while( *p != '\0' ) 2295 { 2296 (void) StringToDouble(p, &q); /* get value - ignores leading space */ 2297 if (p == q) return((double *)NULL); /* no value found */ 2298 p=q; i++; /* inc value count */ 2299 while ( isspace((int)*p) ) p++; /* skip spaces */ 2300 if ( *p == ',' ) p++; /* skip comma */ 2301 while ( isspace((int)*p) ) p++; /* and more spaces */ 2302 } 2303 2304 /* Allocate floating point argument list */ 2305 *count=i; 2306 array=(double *) AcquireQuantumMemory(i,sizeof(*array)); 2307 if (array == (double *) NULL) { 2308 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); 2309 (void) ThrowMagickException(exception,GetMagickModule(), 2310 ResourceLimitFatalError,"MemoryAllocationFailed"," "); 2311 return((double *)NULL); 2312 } 2313 2314 /* Fill in the floating point values */ 2315 p=string; 2316 i=0; 2317 while( *p != '\0' && i < *count ) { 2318 array[i++]=StringToDouble(p,&q); 2319 p=q; 2320 while ( isspace((int)*p) || *p == ',' ) p++; 2321 } 2322 2323 return(array); 2324} 2325 2326/* 2327%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2328% % 2329% % 2330% % 2331+ S t r i n g T o k e n % 2332% % 2333% % 2334% % 2335%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2336% 2337% StringToken() Looks for any one of given delimiters and splits the string 2338% into two separate strings by replacing the delimiter character found with a 2339% nul character. 2340% 2341% The given string pointer is changed to point to the string following the 2342% delimiter character found, or NULL. A pointer to the start of the 2343% string is returned, representing the token before the delimiter. 2344% 2345% In may ways this is equivent to the strtok() C library function, but with 2346% multiple delimiter characters rather than a delimiter string. 2347% 2348% The format of the StringToken method is: 2349% 2350% char *StringToken(const char *delimiters,char **string) 2351% 2352% A description of each parameter follows: 2353% 2354% o delimiters: one or more delimiters. 2355% 2356% o string: return the first token in the string. If none is found, return 2357% NULL. 2358% 2359*/ 2360MagickExport char *StringToken(const char *delimiters,char **string) 2361{ 2362 char 2363 *q; 2364 2365 register char 2366 *p; 2367 2368 register const char 2369 *r; 2370 2371 register int 2372 c, 2373 d; 2374 2375 p=(*string); 2376 if (p == (char *) NULL) 2377 return((char *) NULL); 2378 q=p; 2379 for ( ; ; ) 2380 { 2381 c=(*p++); 2382 r=delimiters; 2383 do 2384 { 2385 d=(*r++); 2386 if (c == d) 2387 { 2388 if (c == '\0') 2389 p=(char *) NULL; 2390 else 2391 p[-1]='\0'; 2392 *string=p; 2393 return(q); 2394 } 2395 } while (d != '\0'); 2396 } 2397} 2398 2399/* 2400%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2401% % 2402% % 2403% % 2404% S t r i n g T o L i s t % 2405% % 2406% % 2407% % 2408%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2409% 2410% StringToList() converts a text string into a list by segmenting the text 2411% string at each carriage return discovered. The list is converted to HEX 2412% characters if any control characters are discovered within the text string. 2413% 2414% The format of the StringToList method is: 2415% 2416% char **StringToList(const char *text) 2417% 2418% A description of each parameter follows: 2419% 2420% o text: Specifies the string to segment into a list. 2421% 2422*/ 2423MagickExport char **StringToList(const char *text) 2424{ 2425 char 2426 **textlist; 2427 2428 register const char 2429 *p; 2430 2431 register ssize_t 2432 i; 2433 2434 size_t 2435 lines; 2436 2437 if (text == (char *) NULL) 2438 return((char **) NULL); 2439 for (p=text; *p != '\0'; p++) 2440 if (((int) ((unsigned char) *p) < 32) && 2441 (isspace((int) ((unsigned char) *p)) == 0)) 2442 break; 2443 if (*p == '\0') 2444 { 2445 register const char 2446 *q; 2447 2448 /* 2449 Convert string to an ASCII list. 2450 */ 2451 lines=1; 2452 for (p=text; *p != '\0'; p++) 2453 if (*p == '\n') 2454 lines++; 2455 textlist=(char **) AcquireQuantumMemory((size_t) lines+1UL, 2456 sizeof(*textlist)); 2457 if (textlist == (char **) NULL) 2458 ThrowFatalException(ResourceLimitFatalError,"UnableToConvertText"); 2459 p=text; 2460 for (i=0; i < (ssize_t) lines; i++) 2461 { 2462 for (q=p; *q != '\0'; q++) 2463 if ((*q == '\r') || (*q == '\n')) 2464 break; 2465 textlist[i]=(char *) AcquireQuantumMemory((size_t) (q-p)+MaxTextExtent, 2466 sizeof(**textlist)); 2467 if (textlist[i] == (char *) NULL) 2468 ThrowFatalException(ResourceLimitFatalError,"UnableToConvertText"); 2469 (void) memcpy(textlist[i],p,(size_t) (q-p)); 2470 textlist[i][q-p]='\0'; 2471 if (*q == '\r') 2472 q++; 2473 p=q+1; 2474 } 2475 } 2476 else 2477 { 2478 char 2479 hex_string[MaxTextExtent]; 2480 2481 register char 2482 *q; 2483 2484 register ssize_t 2485 j; 2486 2487 /* 2488 Convert string to a HEX list. 2489 */ 2490 lines=(size_t) (strlen(text)/0x14)+1; 2491 textlist=(char **) AcquireQuantumMemory((size_t) lines+1UL, 2492 sizeof(*textlist)); 2493 if (textlist == (char **) NULL) 2494 ThrowFatalException(ResourceLimitFatalError,"UnableToConvertText"); 2495 p=text; 2496 for (i=0; i < (ssize_t) lines; i++) 2497 { 2498 textlist[i]=(char *) AcquireQuantumMemory(2UL*MaxTextExtent, 2499 sizeof(**textlist)); 2500 if (textlist[i] == (char *) NULL) 2501 ThrowFatalException(ResourceLimitFatalError,"UnableToConvertText"); 2502 (void) FormatLocaleString(textlist[i],MaxTextExtent,"0x%08lx: ", 2503 (long) (0x14*i)); 2504 q=textlist[i]+strlen(textlist[i]); 2505 for (j=1; j <= (ssize_t) MagickMin(strlen(p),0x14); j++) 2506 { 2507 (void) FormatLocaleString(hex_string,MaxTextExtent,"%02x",*(p+j)); 2508 (void) CopyMagickString(q,hex_string,MaxTextExtent); 2509 q+=2; 2510 if ((j % 0x04) == 0) 2511 *q++=' '; 2512 } 2513 for ( ; j <= 0x14; j++) 2514 { 2515 *q++=' '; 2516 *q++=' '; 2517 if ((j % 0x04) == 0) 2518 *q++=' '; 2519 } 2520 *q++=' '; 2521 for (j=1; j <= (ssize_t) MagickMin(strlen(p),0x14); j++) 2522 { 2523 if (isprint((int) ((unsigned char) *p)) != 0) 2524 *q++=(*p); 2525 else 2526 *q++='-'; 2527 p++; 2528 } 2529 *q='\0'; 2530 } 2531 } 2532 textlist[i]=(char *) NULL; 2533 return(textlist); 2534} 2535 2536/* 2537%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2538% % 2539% % 2540% % 2541% S t r i n g T o S t r i n g I n f o % 2542% % 2543% % 2544% % 2545%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2546% 2547% StringToStringInfo() converts a string to a StringInfo type. 2548% 2549% The format of the StringToStringInfo method is: 2550% 2551% StringInfo *StringToStringInfo(const char *string) 2552% 2553% A description of each parameter follows: 2554% 2555% o string: The string. 2556% 2557*/ 2558MagickExport StringInfo *StringToStringInfo(const char *string) 2559{ 2560 StringInfo 2561 *string_info; 2562 2563 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); 2564 assert(string != (const char *) NULL); 2565 string_info=AcquireStringInfo(strlen(string)); 2566 SetStringInfoDatum(string_info,(const unsigned char *) string); 2567 return(string_info); 2568} 2569 2570/* 2571%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2572% % 2573% % 2574% % 2575% S t r i p S t r i n g % 2576% % 2577% % 2578% % 2579%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2580% 2581% StripString() strips any whitespace or quotes from the beginning and end of 2582% a string of characters. 2583% 2584% The format of the StripString method is: 2585% 2586% void StripString(char *message) 2587% 2588% A description of each parameter follows: 2589% 2590% o message: Specifies an array of characters. 2591% 2592*/ 2593MagickExport void StripString(char *message) 2594{ 2595 register char 2596 *p, 2597 *q; 2598 2599 size_t 2600 length; 2601 2602 assert(message != (char *) NULL); 2603 if (*message == '\0') 2604 return; 2605 length=strlen(message); 2606 p=message; 2607 while (isspace((int) ((unsigned char) *p)) != 0) 2608 p++; 2609 if ((*p == '\'') || (*p == '"')) 2610 p++; 2611 q=message+length-1; 2612 while ((isspace((int) ((unsigned char) *q)) != 0) && (q > p)) 2613 q--; 2614 if (q > p) 2615 if ((*q == '\'') || (*q == '"')) 2616 q--; 2617 (void) memmove(message,p,(size_t) (q-p+1)); 2618 message[q-p+1]='\0'; 2619 for (p=message; *p != '\0'; p++) 2620 if (*p == '\n') 2621 *p=' '; 2622} 2623 2624/* 2625%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2626% % 2627% % 2628% % 2629% S u b s t i t u t e S t r i n g % 2630% % 2631% % 2632% % 2633%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 2634% 2635% SubstituteString() performs string substitution on a string, replacing the 2636% string with the substituted version. Buffer must be allocated from the heap. 2637% If the string is matched and status, MagickTrue is returned otherwise 2638% MagickFalse. 2639% 2640% The format of the SubstituteString method is: 2641% 2642% MagickBooleanType SubstituteString(char **string,const char *search, 2643% const char *replace) 2644% 2645% A description of each parameter follows: 2646% 2647% o string: the string to perform replacements on; replaced with new 2648% allocation if a replacement is made. 2649% 2650% o search: search for this string. 2651% 2652% o replace: replace any matches with this string. 2653% 2654*/ 2655MagickExport MagickBooleanType SubstituteString(char **string, 2656 const char *search,const char *replace) 2657{ 2658 MagickBooleanType 2659 status; 2660 2661 register char 2662 *p; 2663 2664 size_t 2665 extent, 2666 replace_extent, 2667 search_extent; 2668 2669 ssize_t 2670 offset; 2671 2672 status=MagickFalse; 2673 search_extent=0, 2674 replace_extent=0; 2675 for (p=strchr(*string,*search); p != (char *) NULL; p=strchr(p+1,*search)) 2676 { 2677 if (search_extent == 0) 2678 search_extent=strlen(search); 2679 if (strncmp(p,search,search_extent) != 0) 2680 continue; 2681 /* 2682 We found a match. 2683 */ 2684 status=MagickTrue; 2685 if (replace_extent == 0) 2686 replace_extent=strlen(replace); 2687 if (replace_extent > search_extent) 2688 { 2689 /* 2690 Make room for the replacement string. 2691 */ 2692 offset=(ssize_t) (p-(*string)); 2693 extent=strlen(*string)+replace_extent-search_extent+1; 2694 *string=(char *) ResizeQuantumMemory(*string,extent+MaxTextExtent, 2695 sizeof(*p)); 2696 if (*string == (char *) NULL) 2697 ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); 2698 p=(*string)+offset; 2699 } 2700 /* 2701 Replace string. 2702 */ 2703 if (search_extent != replace_extent) 2704 (void) CopyMagickMemory(p+replace_extent,p+search_extent, 2705 strlen(p+search_extent)+1); 2706 (void) CopyMagickMemory(p,replace,replace_extent); 2707 p+=replace_extent-1; 2708 } 2709 return(status); 2710} 2711