/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % SSSSS TTTTT RRRR IIIII N N GGGG % % SS T R R I NN N G % % SSS T RRRR I N N N G GGG % % SS T R R I N NN G G % % SSSSS T R R IIIII N N GGGG % % % % % % MagickCore String Methods % % % % Software Design % % Cristy % % August 2003 % % % % % % Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization % % dedicated to making software imaging solutions freely available. % % % % You may not use this file except in compliance with the license. You may % % obtain a copy of the license at % % % % https://imagemagick.org/script/license.php % % % % unless required by applicable law or agreed to in writing, software % % distributed under the license is distributed on an "as is" basis, % % without warranties or conditions of any kind, either express or implied. % % See the license for the specific language governing permissions and % % limitations under the license. % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % */ /* include declarations. */ #include "MagickCore/studio.h" #include "MagickCore/blob.h" #include "MagickCore/blob-private.h" #include "MagickCore/exception.h" #include "MagickCore/exception-private.h" #include "MagickCore/image-private.h" #include "MagickCore/list.h" #include "MagickCore/locale_.h" #include "MagickCore/log.h" #include "MagickCore/memory_.h" #include "MagickCore/memory-private.h" #include "MagickCore/nt-base-private.h" #include "MagickCore/property.h" #include "MagickCore/resource_.h" #include "MagickCore/signature-private.h" #include "MagickCore/string_.h" #include "MagickCore/string-private.h" #include "MagickCore/utility-private.h" /* Define declarations. */ #define CharsPerLine 0x14 /* Static declarations. */ #ifdef __VMS #define asciimap AsciiMap #endif #if !defined(MAGICKCORE_HAVE_STRCASECMP) || !defined(MAGICKCORE_HAVE_STRNCASECMP) static const unsigned char AsciiMap[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xe1, 0xe2, 0xe3, 0xe4, 0xc5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, }; #endif /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % A c q u i r e S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % AcquireString() returns an new extented string, containing a clone of the % given string. % % An extended string is the string length, plus an extra MagickPathExtent space % to allow for the string to be actively worked on. % % The returned string shoud be freed using DestoryString(). % % The format of the AcquireString method is: % % char *AcquireString(const char *source) % % A description of each parameter follows: % % o source: A character string. % */ MagickExport char *AcquireString(const char *source) { char *destination; size_t length; length=0; if (source != (char *) NULL) length+=strlen(source); if (~length < MagickPathExtent) ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); destination=(char *) AcquireQuantumMemory(length+MagickPathExtent, sizeof(*destination)); if (destination == (char *) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); *destination='\0'; if (source != (char *) NULL) (void) memcpy(destination,source,length*sizeof(*destination)); destination[length]='\0'; return(destination); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % A c q u i r e S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % AcquireStringInfo() allocates the StringInfo structure. % % The format of the AcquireStringInfo method is: % % StringInfo *AcquireStringInfo(const size_t length) % % A description of each parameter follows: % % o length: the string length. % */ static StringInfo *AcquireStringInfoContainer() { StringInfo *string_info; string_info=(StringInfo *) AcquireCriticalMemory(sizeof(*string_info)); (void) memset(string_info,0,sizeof(*string_info)); string_info->signature=MagickCoreSignature; return(string_info); } MagickExport StringInfo *AcquireStringInfo(const size_t length) { StringInfo *string_info; string_info=AcquireStringInfoContainer(); string_info->length=length; if (~string_info->length >= (MagickPathExtent-1)) string_info->datum=(unsigned char *) AcquireQuantumMemory( string_info->length+MagickPathExtent,sizeof(*string_info->datum)); if (string_info->datum == (unsigned char *) NULL) ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); (void) memset(string_info->datum,0,(length+MagickPathExtent)* sizeof(*string_info->datum)); return(string_info); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % B l o b T o S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % BlobToStringInfo() returns the contents of a blob as a StringInfo structure % with MagickPathExtent extra space. % % The format of the BlobToStringInfo method is: % % StringInfo *BlobToStringInfo(const void *blob,const size_t length) % % A description of each parameter follows: % % o blob: the blob. % % o length: the length of the blob. % */ MagickExport StringInfo *BlobToStringInfo(const void *blob,const size_t length) { StringInfo *string_info; if (~length < MagickPathExtent) ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); string_info=AcquireStringInfoContainer(); string_info->length=length; string_info->datum=(unsigned char *) AcquireQuantumMemory(length+ MagickPathExtent,sizeof(*string_info->datum)); if (string_info->datum == (unsigned char *) NULL) { string_info=DestroyStringInfo(string_info); return((StringInfo *) NULL); } if (blob != (const void *) NULL) (void) memcpy(string_info->datum,blob,length); else (void) memset(string_info->datum,0,length*sizeof(*string_info->datum)); (void) memset(string_info->datum+length,0,MagickPathExtent* sizeof(*string_info->datum)); return(string_info); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % C l o n e S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % CloneString() replaces or frees the destination string to make it % a clone of the input string plus MagickPathExtent more space so the string % may be worked on. % % If source is a NULL pointer the destination string will be freed and set to % a NULL pointer. A pointer to the stored in the destination is also returned. % % When finished the non-NULL string should be freed using DestoryString() % or using CloneString() with a NULL pointed for the source. % % The format of the CloneString method is: % % char *CloneString(char **destination,const char *source) % % A description of each parameter follows: % % o destination: A pointer to a character string. % % o source: A character string. % */ MagickExport char *CloneString(char **destination,const char *source) { size_t length; assert(destination != (char **) NULL); if (source == (const char *) NULL) { if (*destination != (char *) NULL) *destination=DestroyString(*destination); return(*destination); } if (*destination == (char *) NULL) { *destination=AcquireString(source); return(*destination); } length=strlen(source); if (~length < MagickPathExtent) ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); *destination=(char *) ResizeQuantumMemory(*destination,length+ MagickPathExtent,sizeof(**destination)); if (*destination == (char *) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); if (length != 0) (void) memcpy(*destination,source,length*sizeof(**destination)); (*destination)[length]='\0'; return(*destination); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % C l o n e S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % CloneStringInfo() clones a copy of the StringInfo structure. % % The format of the CloneStringInfo method is: % % StringInfo *CloneStringInfo(const StringInfo *string_info) % % A description of each parameter follows: % % o string_info: the string info. % */ MagickExport StringInfo *CloneStringInfo(const StringInfo *string_info) { StringInfo *clone_info; assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); clone_info=AcquireStringInfo(string_info->length); if (string_info->length != 0) (void) memcpy(clone_info->datum,string_info->datum,string_info->length+1); return(clone_info); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % C o m p a r e S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % CompareStringInfo() compares the two datums target and source. It returns % an integer less than, equal to, or greater than zero if target is found, % respectively, to be less than, to match, or be greater than source. % % The format of the CompareStringInfo method is: % % int CompareStringInfo(const StringInfo *target,const StringInfo *source) % % A description of each parameter follows: % % o target: the target string. % % o source: the source string. % */ MagickExport int CompareStringInfo(const StringInfo *target, const StringInfo *source) { int status; assert(target != (StringInfo *) NULL); assert(target->signature == MagickCoreSignature); assert(source != (StringInfo *) NULL); assert(source->signature == MagickCoreSignature); status=memcmp(target->datum,source->datum,MagickMin(target->length, source->length)); if (status != 0) return(status); if (target->length == source->length) return(0); return(target->length < source->length ? -1 : 1); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % C o n c a t e n a t e M a g i c k S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ConcatenateMagickString() concatenates the source string to the destination % string. The destination buffer is always null-terminated even if the % string must be truncated. % % The format of the ConcatenateMagickString method is: % % size_t ConcatenateMagickString(char *destination,const char *source, % const size_t length) % % A description of each parameter follows: % % o destination: the destination string. % % o source: the source string. % % o length: the length of the destination string. % */ MagickExport size_t ConcatenateMagickString(char *destination, const char *source,const size_t length) { register char *q; register const char *p; register size_t i; size_t count; assert(destination != (char *) NULL); assert(source != (const char *) NULL); assert(length >= 1); p=source; q=destination; i=length; while ((i-- != 0) && (*q != '\0')) q++; count=(size_t) (q-destination); i=length-count; if (i == 0) return(count+strlen(p)); while (*p != '\0') { if (i != 1) { *q++=(*p); i--; } p++; } *q='\0'; return(count+(p-source)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % C o n c a t e n a t e S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ConcatenateString() appends a copy of string source, including the % terminating null character, to the end of string destination. % % The format of the ConcatenateString method is: % % MagickBooleanType ConcatenateString(char **destination, % const char *source) % % A description of each parameter follows: % % o destination: A pointer to a character string. % % o source: A character string. % */ MagickExport MagickBooleanType ConcatenateString(char **destination, const char *source) { size_t destination_length, length, source_length; assert(destination != (char **) NULL); if (source == (const char *) NULL) return(MagickTrue); if (*destination == (char *) NULL) { *destination=AcquireString(source); return(MagickTrue); } destination_length=strlen(*destination); source_length=strlen(source); length=destination_length; if (~length < source_length) ThrowFatalException(ResourceLimitFatalError,"UnableToConcatenateString"); length+=source_length; if (~length < MagickPathExtent) ThrowFatalException(ResourceLimitFatalError,"UnableToConcatenateString"); *destination=(char *) ResizeQuantumMemory(*destination,length+ MagickPathExtent,sizeof(**destination)); if (*destination == (char *) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToConcatenateString"); if (source_length != 0) (void) memcpy((*destination)+destination_length,source,source_length); (*destination)[length]='\0'; return(MagickTrue); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % C o n c a t e n a t e S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ConcatenateStringInfo() concatenates the source string to the destination % string. % % The format of the ConcatenateStringInfo method is: % % void ConcatenateStringInfo(StringInfo *string_info, % const StringInfo *source) % % A description of each parameter follows: % % o string_info: the string info. % % o source: the source string. % */ MagickExport void ConcatenateStringInfo(StringInfo *string_info, const StringInfo *source) { size_t length; assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); assert(source != (const StringInfo *) NULL); length=string_info->length; if (~length < source->length) ThrowFatalException(ResourceLimitFatalError,"UnableToConcatenateString"); SetStringInfoLength(string_info,length+source->length); (void) memcpy(string_info->datum+length,source->datum,source->length); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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 % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ConfigureFileToStringInfo() returns the contents of a configure file as a % string. % % The format of the ConfigureFileToStringInfo method is: % % StringInfo *ConfigureFileToStringInfo(const char *filename) % ExceptionInfo *exception) % % A description of each parameter follows: % % o filename: the filename. % */ MagickExport StringInfo *ConfigureFileToStringInfo(const char *filename) { char *string; int file; MagickOffsetType offset; size_t length; StringInfo *string_info; void *map; assert(filename != (const char *) NULL); file=open_utf8(filename,O_RDONLY | O_BINARY,0); if (file == -1) return((StringInfo *) NULL); offset=(MagickOffsetType) lseek(file,0,SEEK_END); if ((offset < 0) || (offset != (MagickOffsetType) ((ssize_t) offset))) { file=close(file)-1; return((StringInfo *) NULL); } length=(size_t) offset; string=(char *) NULL; if (~length >= (MagickPathExtent-1)) string=(char *) AcquireQuantumMemory(length+MagickPathExtent, sizeof(*string)); if (string == (char *) NULL) { file=close(file)-1; return((StringInfo *) NULL); } map=MapBlob(file,ReadMode,0,length); if (map != (void *) NULL) { (void) memcpy(string,map,length); (void) UnmapBlob(map,length); } else { register size_t i; ssize_t count; (void) lseek(file,0,SEEK_SET); for (i=0; i < length; i+=count) { count=read(file,string+i,(size_t) MagickMin(length-i,(size_t) SSIZE_MAX)); if (count <= 0) { count=0; if (errno != EINTR) break; } } if (i < length) { file=close(file)-1; string=DestroyString(string); return((StringInfo *) NULL); } } string[length]='\0'; file=close(file)-1; string_info=AcquireStringInfoContainer(); string_info->path=ConstantString(filename); string_info->length=length; string_info->datum=(unsigned char *) string; return(string_info); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % C o n s t a n t S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ConstantString() allocates exactly the needed memory for a string and % copies the source string to that memory location. A NULL string pointer % will allocate an empty string containing just the NUL character. % % When finished the string should be freed using DestoryString() % % The format of the ConstantString method is: % % char *ConstantString(const char *source) % % A description of each parameter follows: % % o source: A character string. % */ MagickExport char *ConstantString(const char *source) { char *destination; size_t length; length=0; if (source != (char *) NULL) length+=strlen(source); destination=(char *) NULL; if (~length >= 1UL) destination=(char *) AcquireQuantumMemory(length+1UL,sizeof(*destination)); if (destination == (char *) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); *destination='\0'; if (source != (char *) NULL) (void) memcpy(destination,source,length*sizeof(*destination)); destination[length]='\0'; return(destination); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % C o p y M a g i c k S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % CopyMagickString() copies the source string to the destination string, with % out exceeding the given pre-declared length. % % The destination buffer is always null-terminated even if the string must be % truncated. The return value is the minimum of the source string length or % the length parameter. % % The format of the CopyMagickString method is: % % size_t CopyMagickString(const char *destination,char *source, % const size_t length) % % A description of each parameter follows: % % o destination: the destination string. % % o source: the source string. % % o length: the length of the destination string. % */ MagickExport size_t CopyMagickString(char *destination,const char *source, const size_t length) { register char *q; register const char *p; register size_t n; p=source; q=destination; for (n=length; n > 4; n-=4) { *q=(*p++); if (*q == '\0') return((size_t) (p-source-1)); q++; *q=(*p++); if (*q == '\0') return((size_t) (p-source-1)); q++; *q=(*p++); if (*q == '\0') return((size_t) (p-source-1)); q++; *q=(*p++); if (*q == '\0') return((size_t) (p-source-1)); q++; } if (n != 0) for (n--; n != 0; n--) { *q=(*p++); if (*q == '\0') return((size_t) (p-source-1)); q++; } if (length != 0) *q='\0'; return((size_t) (p-source-1)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % D e s t r o y S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % DestroyString() destroys memory associated with a string. % % The format of the DestroyString method is: % % char *DestroyString(char *string) % % A description of each parameter follows: % % o string: the string. % */ MagickExport char *DestroyString(char *string) { return((char *) RelinquishMagickMemory(string)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % D e s t r o y S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % DestroyStringInfo() destroys memory associated with the StringInfo structure. % % The format of the DestroyStringInfo method is: % % StringInfo *DestroyStringInfo(StringInfo *string_info) % % A description of each parameter follows: % % o string_info: the string info. % */ MagickExport StringInfo *DestroyStringInfo(StringInfo *string_info) { assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); if (string_info->datum != (unsigned char *) NULL) string_info->datum=(unsigned char *) RelinquishMagickMemory( string_info->datum); if (string_info->name != (char *) NULL) string_info->name=DestroyString(string_info->name); if (string_info->path != (char *) NULL) string_info->path=DestroyString(string_info->path); string_info->signature=(~MagickCoreSignature); string_info=(StringInfo *) RelinquishMagickMemory(string_info); return(string_info); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % D e s t r o y S t r i n g L i s t % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % DestroyStringList() zeros memory associated with a string list. % % The format of the DestroyStringList method is: % % char **DestroyStringList(char **list) % % A description of each parameter follows: % % o list: the string list. % */ MagickExport char **DestroyStringList(char **list) { register ssize_t i; assert(list != (char **) NULL); for (i=0; list[i] != (char *) NULL; i++) list[i]=DestroyString(list[i]); list=(char **) RelinquishMagickMemory(list); return(list); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % E s c a p e S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % EscapeString() allocates memory for a backslash-escaped version of a % source text string, copies the escaped version of the text to that % memory location while adding backslash characters, and returns the % escaped string. % % The format of the EscapeString method is: % % char *EscapeString(const char *source,const char escape) % % A description of each parameter follows: % % o allocate_string: Method EscapeString returns the escaped string. % % o source: A character string. % % o escape: the quoted string termination character to escape (e.g. '"'). % */ MagickExport char *EscapeString(const char *source,const char escape) { char *destination; register char *q; register const char *p; size_t length; assert(source != (const char *) NULL); length=0; for (p=source; *p != '\0'; p++) { if ((*p == '\\') || (*p == escape)) { if (~length < 1) ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString"); length++; } length++; } destination=(char *) NULL; if (~length >= (MagickPathExtent-1)) destination=(char *) AcquireQuantumMemory(length+MagickPathExtent, sizeof(*destination)); if (destination == (char *) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToEscapeString"); *destination='\0'; q=destination; for (p=source; *p != '\0'; p++) { if ((*p == '\\') || (*p == escape)) *q++='\\'; *q++=(*p); } *q='\0'; return(destination); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % F i l e T o S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % FileToString() returns the contents of a file as a string. % % The format of the FileToString method is: % % char *FileToString(const char *filename,const size_t extent, % ExceptionInfo *exception) % % A description of each parameter follows: % % o filename: the filename. % % o extent: Maximum length of the string. % % o exception: return any errors or warnings in this structure. % */ MagickExport char *FileToString(const char *filename,const size_t extent, ExceptionInfo *exception) { size_t length; assert(filename != (const char *) NULL); (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",filename); assert(exception != (ExceptionInfo *) NULL); return((char *) FileToBlob(filename,extent,&length,exception)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % F i l e T o S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % FileToStringInfo() returns the contents of a file as a string. % % The format of the FileToStringInfo method is: % % StringInfo *FileToStringInfo(const char *filename,const size_t extent, % ExceptionInfo *exception) % % A description of each parameter follows: % % o filename: the filename. % % o extent: Maximum length of the string. % % o exception: return any errors or warnings in this structure. % */ MagickExport StringInfo *FileToStringInfo(const char *filename, const size_t extent,ExceptionInfo *exception) { StringInfo *string_info; assert(filename != (const char *) NULL); (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",filename); assert(exception != (ExceptionInfo *) NULL); string_info=AcquireStringInfoContainer(); string_info->path=ConstantString(filename); string_info->datum=(unsigned char *) FileToBlob(filename,extent, &string_info->length,exception); if (string_info->datum == (unsigned char *) NULL) { string_info=DestroyStringInfo(string_info); return((StringInfo *) NULL); } return(string_info); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % F o r m a t M a g i c k S i z e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % FormatMagickSize() converts a size to a human readable format, for example, % 14k, 234m, 2.7g, or 3.0t. Scaling is done by repetitively dividing by % 1000. % % The format of the FormatMagickSize method is: % % ssize_t FormatMagickSize(const MagickSizeType size,const char *suffix, % const size_t length,char *format) % % A description of each parameter follows: % % o size: convert this size to a human readable format. % % o bi: use power of two rather than power of ten. % % o suffix: append suffix, typically B or P. % % o length: the maximum length of the string. % % o format: human readable format. % */ MagickExport ssize_t FormatMagickSize(const MagickSizeType size, const MagickBooleanType bi,const char *suffix,const size_t length, char *format) { char p[MagickPathExtent], q[MagickPathExtent]; const char **units; double bytes, extent; register ssize_t i; ssize_t count; static const char *bi_units[] = { "", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi", (char *) NULL }, *traditional_units[] = { "", "K", "M", "G", "T", "P", "E", "Z", "Y", (char *) NULL }; bytes=1000.0; units=traditional_units; if (bi != MagickFalse) { bytes=1024.0; units=bi_units; } #if defined(_MSC_VER) && (_MSC_VER == 1200) extent=(double) ((MagickOffsetType) size); #else extent=(double) size; #endif (void) FormatLocaleString(p,MagickPathExtent,"%.*g",GetMagickPrecision(), extent); (void) FormatLocaleString(q,MagickPathExtent,"%.20g",extent); if (strtod(p,(char **) NULL) == strtod(q,(char **) NULL)) { if (suffix == (const char *) NULL) count=FormatLocaleString(format,length,"%.20g%s",extent,units[0]); else count=FormatLocaleString(format,length,"%.20g%s%s",extent,units[0], suffix); return(count); } for (i=0; (extent >= bytes) && (units[i+1] != (const char *) NULL); i++) extent/=bytes; if (suffix == (const char *) NULL) count=FormatLocaleString(format,length,"%.*g%s",GetMagickPrecision(), extent,units[i]); else count=FormatLocaleString(format,length,"%.*g%s%s",GetMagickPrecision(), extent,units[i],suffix); return(count); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % F o r m a t M a g i c k T i m e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % FormatMagickTime() returns the specified time in the Internet date/time % format and the length of the timestamp. % % The format of the FormatMagickTime method is: % % ssize_t FormatMagickTime(const time_t time,const size_t length, % char *timestamp) % % A description of each parameter follows. % % o time: the time since the Epoch (00:00:00 UTC, January 1, 1970), % measured in seconds. % % o length: the maximum length of the string. % % o timestamp: Return the Internet date/time here. % */ MagickExport ssize_t FormatMagickTime(const time_t time,const size_t length, char *timestamp) { ssize_t count; struct tm gm_time, local_time; time_t timezone; assert(timestamp != (char *) NULL); (void) memset(&local_time,0,sizeof(local_time)); (void) memset(&gm_time,0,sizeof(gm_time)); #if defined(MAGICKCORE_HAVE_LOCALTIME_R) (void) localtime_r(&time,&local_time); #else { struct tm *my_time; my_time=localtime(&time); if (my_time != (struct tm *) NULL) (void) memcpy(&local_time,my_time,sizeof(local_time)); } #endif #if defined(MAGICKCORE_HAVE_GMTIME_R) (void) gmtime_r(&time,&gm_time); #else { struct tm *my_time; my_time=gmtime(&time); if (my_time != (struct tm *) NULL) (void) memcpy(&gm_time,my_time,sizeof(gm_time)); } #endif timezone=(time_t) ((local_time.tm_min-gm_time.tm_min)/60+ local_time.tm_hour-gm_time.tm_hour+24*((local_time.tm_year- gm_time.tm_year) != 0 ? (local_time.tm_year-gm_time.tm_year) : (local_time.tm_yday-gm_time.tm_yday))); count=FormatLocaleString(timestamp,length, "%04d-%02d-%02dT%02d:%02d:%02d%+03ld:00",local_time.tm_year+1900, local_time.tm_mon+1,local_time.tm_mday,local_time.tm_hour, local_time.tm_min,local_time.tm_sec,(long) timezone); return(count); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % G e t E n v i r o n m e n t V a l u e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % GetEnvironmentValue() returns the environment string that matches the % specified name. % % The format of the GetEnvironmentValue method is: % % char *GetEnvironmentValue(const char *name) % % A description of each parameter follows: % % o name: the environment name. % */ MagickExport char *GetEnvironmentValue(const char *name) { const char *environment; environment=getenv(name); if (environment == (const char *) NULL) return((char *) NULL); return(ConstantString(environment)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % G e t S t r i n g I n f o D a t u m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % GetStringInfoDatum() returns the datum associated with the string. % % The format of the GetStringInfoDatum method is: % % unsigned char *GetStringInfoDatum(const StringInfo *string_info) % % A description of each parameter follows: % % o string_info: the string info. % */ MagickExport unsigned char *GetStringInfoDatum(const StringInfo *string_info) { assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); return(string_info->datum); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % G e t S t r i n g I n f o L e n g t h % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % GetStringInfoLength() returns the string length. % % The format of the GetStringInfoLength method is: % % size_t GetStringInfoLength(const StringInfo *string_info) % % A description of each parameter follows: % % o string_info: the string info. % */ MagickExport size_t GetStringInfoLength(const StringInfo *string_info) { assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); return(string_info->length); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % G e t S t r i n g I n f o N a m e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % GetStringInfoName() returns the name associated with the string. % % The format of the GetStringInfoName method is: % % const char *GetStringInfoName(const StringInfo *string_info) % % A description of each parameter follows: % % o string_info: the string info. % */ MagickExport const char *GetStringInfoName(const StringInfo *string_info) { assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); return(string_info->name); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % G e t S t r i n g I n f o P a t h % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % GetStringInfoPath() returns the path associated with the string. % % The format of the GetStringInfoPath method is: % % const char *GetStringInfoPath(const StringInfo *string_info) % % A description of each parameter follows: % % o string_info: the string info. % */ MagickExport const char *GetStringInfoPath(const StringInfo *string_info) { assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); return(string_info->path); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + I n t e r p r e t S i P r e f i x V a l u e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % InterpretSiPrefixValue() converts the initial portion of the string to a % double representation. It also recognizes SI prefixes (e.g. B, KB, MiB, % etc.). % % The format of the InterpretSiPrefixValue method is: % % double InterpretSiPrefixValue(const char *value,char **sentinal) % % A description of each parameter follows: % % o value: the string value. % % o sentinal: if sentinal is not NULL, return a pointer to the character % after the last character used in the conversion. % */ MagickExport double InterpretSiPrefixValue(const char *magick_restrict string, char **magick_restrict sentinal) { char *q; double value; value=InterpretLocaleValue(string,&q); if (q != string) { if ((*q >= 'E') && (*q <= 'z')) { double e; switch ((int) ((unsigned char) *q)) { case 'y': e=(-24.0); break; case 'z': e=(-21.0); break; case 'a': e=(-18.0); break; case 'f': e=(-15.0); break; case 'p': e=(-12.0); break; case 'n': e=(-9.0); break; case 'u': e=(-6.0); break; case 'm': e=(-3.0); break; case 'c': e=(-2.0); break; case 'd': e=(-1.0); break; case 'h': e=2.0; break; case 'k': e=3.0; break; case 'K': e=3.0; break; case 'M': e=6.0; break; case 'G': e=9.0; break; case 'T': e=12.0; break; case 'P': e=15.0; break; case 'E': e=18.0; break; case 'Z': e=21.0; break; case 'Y': e=24.0; break; default: e=0.0; break; } if (e >= MagickEpsilon) { if (q[1] == 'i') { value*=pow(2.0,e/0.3); q+=2; } else { value*=pow(10.0,e); q++; } } } if ((*q == 'B') || (*q == 'P')) q++; } if (sentinal != (char **) NULL) *sentinal=q; return(value); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % I s S t r i n g T r u e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % IsStringTrue() returns MagickTrue if the value is "true", "on", "yes" or % "1". Any other string or undefined returns MagickFalse. % % Typically this is used to look at strings (options or artifacts) which % has a default value of "false", when not defined. % % The format of the IsStringTrue method is: % % MagickBooleanType IsStringTrue(const char *value) % % A description of each parameter follows: % % o value: Specifies a pointer to a character array. % */ MagickExport MagickBooleanType IsStringTrue(const char *value) { if (value == (const char *) NULL) return(MagickFalse); if (LocaleCompare(value,"true") == 0) return(MagickTrue); if (LocaleCompare(value,"on") == 0) return(MagickTrue); if (LocaleCompare(value,"yes") == 0) return(MagickTrue); if (LocaleCompare(value,"1") == 0) return(MagickTrue); return(MagickFalse); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % I s S t r i n g F a l s e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % IsStringFalse() returns MagickTrue if the value is "false", "off", "no" or % "0". Any other string or undefined returns MagickFalse. % % Typically this is used to look at strings (options or artifacts) which % has a default value of "true", when it has not been defined. % % The format of the IsStringFalse method is: % % MagickBooleanType IsStringFalse(const char *value) % % A description of each parameter follows: % % o value: Specifies a pointer to a character array. % */ MagickExport MagickBooleanType IsStringFalse(const char *value) { if (value == (const char *) NULL) return(MagickFalse); if (LocaleCompare(value,"false") == 0) return(MagickTrue); if (LocaleCompare(value,"off") == 0) return(MagickTrue); if (LocaleCompare(value,"no") == 0) return(MagickTrue); if (LocaleCompare(value,"0") == 0) return(MagickTrue); return(MagickFalse); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % P r i n t S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % PrintStringInfo() prints the string. % % The format of the PrintStringInfo method is: % % void PrintStringInfo(FILE *file,const char *id, % const StringInfo *string_info) % % A description of each parameter follows: % % o file: the file, typically stdout. % % o id: the string id. % % o string_info: the string info. % */ MagickExport void PrintStringInfo(FILE *file,const char *id, const StringInfo *string_info) { register const char *p; register size_t i, j; assert(id != (const char *) NULL); assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); p=(char *) string_info->datum; for (i=0; i < string_info->length; i++) { if (((int) ((unsigned char) *p) < 32) && (isspace((int) ((unsigned char) *p)) == 0)) break; p++; } (void) FormatLocaleFile(file,"%s(%.20g):\n",id,(double) string_info->length); if (i == string_info->length) { for (i=0; i < string_info->length; i++) (void) fputc(string_info->datum[i],file); (void) fputc('\n',file); return; } /* Convert string to a HEX list. */ p=(char *) string_info->datum; for (i=0; i < string_info->length; i+=CharsPerLine) { (void) FormatLocaleFile(file,"0x%08lx: ",(unsigned long) (CharsPerLine*i)); for (j=1; j <= MagickMin(string_info->length-i,CharsPerLine); j++) { (void) FormatLocaleFile(file,"%02lx",(unsigned long) (*(p+j)) & 0xff); if ((j % 0x04) == 0) (void) fputc(' ',file); } for ( ; j <= CharsPerLine; j++) { (void) fputc(' ',file); (void) fputc(' ',file); if ((j % 0x04) == 0) (void) fputc(' ',file); } (void) fputc(' ',file); for (j=1; j <= MagickMin(string_info->length-i,CharsPerLine); j++) { if (isprint((int) ((unsigned char) *p)) != 0) (void) fputc(*p,file); else (void) fputc('-',file); p++; } (void) fputc('\n',file); } } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e s e t S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ResetStringInfo() reset the string to all null bytes. % % The format of the ResetStringInfo method is: % % void ResetStringInfo(StringInfo *string_info) % % A description of each parameter follows: % % o string_info: the string info. % */ MagickExport void ResetStringInfo(StringInfo *string_info) { assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); (void) memset(string_info->datum,0,string_info->length); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S a n t i z e S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SanitizeString() returns an new string removes all characters except % letters, digits and !#$%&'*+-=?^_`{|}~@.[]. % % The returned string shoud be freed using DestoryString(). % % The format of the SanitizeString method is: % % char *SanitizeString(const char *source) % % A description of each parameter follows: % % o source: A character string. % */ MagickExport char *SanitizeString(const char *source) { char *sanitize_source; const char *q; register char *p; static char whitelist[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 " "$-_.+!*'(),{}|\\^~[]`\"><#%;/?:@&="; sanitize_source=AcquireString(source); p=sanitize_source; q=sanitize_source+strlen(sanitize_source); for (p+=strspn(p,whitelist); p != q; p+=strspn(p,whitelist)) *p='_'; return(sanitize_source); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S e t S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SetStringInfo() copies the source string to the destination string. % % The format of the SetStringInfo method is: % % void SetStringInfo(StringInfo *string_info,const StringInfo *source) % % A description of each parameter follows: % % o string_info: the string info. % % o source: the source string. % */ MagickExport void SetStringInfo(StringInfo *string_info, const StringInfo *source) { assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); assert(source != (StringInfo *) NULL); assert(source->signature == MagickCoreSignature); if (string_info->length == 0) return; (void) memset(string_info->datum,0,string_info->length); (void) memcpy(string_info->datum,source->datum,MagickMin(string_info->length, source->length)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S e t S t r i n g I n f o D a t u m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SetStringInfoDatum() copies bytes from the source string for the length of % the destination string. % % The format of the SetStringInfoDatum method is: % % void SetStringInfoDatum(StringInfo *string_info, % const unsigned char *source) % % A description of each parameter follows: % % o string_info: the string info. % % o source: the source string. % */ MagickExport void SetStringInfoDatum(StringInfo *string_info, const unsigned char *source) { assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); if (string_info->length != 0) (void) memcpy(string_info->datum,source,string_info->length); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S e t S t r i n g I n f o L e n g t h % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SetStringInfoLength() set the string length to the specified value. % % The format of the SetStringInfoLength method is: % % void SetStringInfoLength(StringInfo *string_info,const size_t length) % % A description of each parameter follows: % % o string_info: the string info. % % o length: the string length. % */ MagickExport void SetStringInfoLength(StringInfo *string_info, const size_t length) { assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); if (string_info->length == length) return; if (~length < MagickPathExtent) ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); string_info->length=length; if (string_info->datum == (unsigned char *) NULL) string_info->datum=(unsigned char *) AcquireQuantumMemory(length+ MagickPathExtent,sizeof(*string_info->datum)); else string_info->datum=(unsigned char *) ResizeQuantumMemory(string_info->datum, length+MagickPathExtent,sizeof(*string_info->datum)); if (string_info->datum == (unsigned char *) NULL) ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S e t S t r i n g I n f o N a m e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SetStringInfoName() sets the name associated with the string. % % The format of the SetStringInfoName method is: % % void SetStringInfoName(StringInfo *string_info,const char *name) % % A description of each parameter follows: % % o string_info: the string info. % % o name: the name. % */ MagickExport void SetStringInfoName(StringInfo *string_info,const char *name) { assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); assert(name != (const char *) NULL); string_info->name=ConstantString(name); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S e t S t r i n g I n f o P a t h % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SetStringInfoPath() sets the path associated with the string. % % The format of the SetStringInfoPath method is: % % void SetStringInfoPath(StringInfo *string_info,const char *path) % % A description of each parameter follows: % % o string_info: the string info. % % o path: the path. % */ MagickExport void SetStringInfoPath(StringInfo *string_info,const char *path) { assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); assert(path != (const char *) NULL); string_info->path=ConstantString(path); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S p l i t S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SplitStringInfo() splits a string into two and returns it. % % The format of the SplitStringInfo method is: % % StringInfo *SplitStringInfo(StringInfo *string_info,const size_t offset) % % A description of each parameter follows: % % o string_info: the string info. % */ MagickExport StringInfo *SplitStringInfo(StringInfo *string_info, const size_t offset) { StringInfo *split_info; assert(string_info != (StringInfo *) NULL); assert(string_info->signature == MagickCoreSignature); if (offset > string_info->length) return((StringInfo *) NULL); split_info=AcquireStringInfo(offset); SetStringInfo(split_info,string_info); (void) memmove(string_info->datum,string_info->datum+offset, string_info->length-offset+MagickPathExtent); SetStringInfoLength(string_info,string_info->length-offset); return(split_info); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S t r i n g I n f o T o S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % StringInfoToString() converts a string info string to a C string. % % The format of the StringInfoToString method is: % % char *StringInfoToString(const StringInfo *string_info) % % A description of each parameter follows: % % o string_info: the string. % */ MagickExport char *StringInfoToString(const StringInfo *string_info) { char *string; size_t length; string=(char *) NULL; length=string_info->length; if (~length >= (MagickPathExtent-1)) string=(char *) AcquireQuantumMemory(length+MagickPathExtent, sizeof(*string)); if (string == (char *) NULL) return((char *) NULL); (void) memcpy(string,(char *) string_info->datum,length*sizeof(*string)); string[length]='\0'; return(string); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S t r i n g I n f o T o H e x S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % StringInfoToHexString() converts a string info string to a C string. % % The format of the StringInfoToHexString method is: % % char *StringInfoToHexString(const StringInfo *string_info) % % A description of each parameter follows: % % o string_info: the string. % */ MagickExport char *StringInfoToHexString(const StringInfo *string_info) { char *string; register const unsigned char *p; register ssize_t i; register unsigned char *q; size_t length; unsigned char hex_digits[16]; length=string_info->length; if (~length < MagickPathExtent) ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); string=(char *) AcquireQuantumMemory(length+MagickPathExtent,2* sizeof(*string)); if (string == (char *) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); hex_digits[0]='0'; hex_digits[1]='1'; hex_digits[2]='2'; hex_digits[3]='3'; hex_digits[4]='4'; hex_digits[5]='5'; hex_digits[6]='6'; hex_digits[7]='7'; hex_digits[8]='8'; hex_digits[9]='9'; hex_digits[10]='a'; hex_digits[11]='b'; hex_digits[12]='c'; hex_digits[13]='d'; hex_digits[14]='e'; hex_digits[15]='f'; p=string_info->datum; q=(unsigned char *) string; for (i=0; i < (ssize_t) string_info->length; i++) { *q++=hex_digits[(*p >> 4) & 0x0f]; *q++=hex_digits[*p & 0x0f]; p++; } *q='\0'; return(string); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S t r i n g T o A r g v % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % StringToArgv() converts a text string into command line arguments. % The 'argv' array of arguments, is returned while the number of arguments % is returned via the provided integer variable pointer. % % Simple 'word' tokenizer, which allows for each word to be optionally % quoted. However it will not allow use of partial quotes, or escape % characters. % % The format of the StringToArgv method is: % % char **StringToArgv(const char *text,int *argc) % % A description of each parameter follows: % % o argv: Method StringToArgv returns the string list unless an error % occurs, otherwise NULL. % % o text: Specifies the string to segment into a list. % % o argc: This integer pointer returns the number of arguments in the % list. % */ MagickExport char **StringToArgv(const char *text,int *argc) { char **argv; register const char *p, *q; register ssize_t i; *argc=0; if (text == (char *) NULL) return((char **) NULL); /* Determine the number of arguments. */ for (p=text; *p != '\0'; ) { while (isspace((int) ((unsigned char) *p)) != 0) p++; if (*p == '\0') break; (*argc)++; if (*p == '"') for (p++; (*p != '"') && (*p != '\0'); p++) ; if (*p == '\'') for (p++; (*p != '\'') && (*p != '\0'); p++) ; while ((isspace((int) ((unsigned char) *p)) == 0) && (*p != '\0')) p++; } (*argc)++; argv=(char **) AcquireQuantumMemory((size_t) (*argc+1UL),sizeof(*argv)); if (argv == (char **) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToConvertStringToARGV"); /* Convert string to an ASCII list. */ argv[0]=AcquireString("magick"); p=text; for (i=1; i < (ssize_t) *argc; i++) { while (isspace((int) ((unsigned char) *p)) != 0) p++; q=p; if (*q == '"') { p++; for (q++; (*q != '"') && (*q != '\0'); q++) ; } else if (*q == '\'') { p++; for (q++; (*q != '\'') && (*q != '\0'); q++) ; } else while ((isspace((int) ((unsigned char) *q)) == 0) && (*q != '\0')) q++; argv[i]=(char *) AcquireQuantumMemory((size_t) (q-p)+MagickPathExtent, sizeof(**argv)); if (argv[i] == (char *) NULL) { for (i--; i >= 0; i--) argv[i]=DestroyString(argv[i]); argv=(char **) RelinquishMagickMemory(argv); ThrowFatalException(ResourceLimitFatalError, "UnableToConvertStringToARGV"); } (void) memcpy(argv[i],p,(size_t) (q-p)); argv[i][q-p]='\0'; p=q; while ((isspace((int) ((unsigned char) *p)) == 0) && (*p != '\0')) p++; } argv[i]=(char *) NULL; return(argv); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S t r i n g T o A r r a y O f D o u b l e s % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % StringToArrayOfDoubles() converts a string of space or comma separated % numbers into array of floating point numbers (doubles). Any number that % failes to parse properly will produce a syntax error. As will two commas % without a number between them. However a final comma at the end will % not be regarded as an error so as to simplify automatic list generation. % % A NULL value is returned on syntax or memory errors. % % Use RelinquishMagickMemory() to free returned array when finished. % % The format of the StringToArrayOfDoubles method is: % % double *StringToArrayOfDoubles(const char *string,size_t *count, % ExceptionInfo *exception) % % A description of each parameter follows: % % o string: the string containing the comma/space separated values. % % o count: returns number of arguments in returned array % % o exception: return any errors or warnings in this structure. % */ MagickExport double *StringToArrayOfDoubles(const char *string,ssize_t *count, ExceptionInfo *exception) { char *q; const char *p; double *array; register ssize_t i; /* Determine count of values, and check syntax. */ assert(exception != (ExceptionInfo *) NULL); assert(exception->signature == MagickCoreSignature); *count=0; if (string == (char *) NULL) return((double *) NULL); /* no value found */ i=0; p=string; while (*p != '\0') { (void) StringToDouble(p,&q); /* get value - ignores leading space */ if (p == q) return((double *) NULL); /* no value found */ p=q; i++; /* increment value count */ while (isspace((int) ((unsigned char) *p)) != 0) p++; /* skip spaces */ if (*p == ',') p++; /* skip comma */ while (isspace((int) ((unsigned char) *p)) != 0) p++; /* and more spaces */ } /* Allocate floating point argument list. */ *count=i; array=(double *) AcquireQuantumMemory((size_t) i,sizeof(*array)); if (array == (double *) NULL) { (void) ThrowMagickException(exception,GetMagickModule(), ResourceLimitError,"MemoryAllocationFailed","`%s'",""); return((double *) NULL); } /* Fill in the floating point values. */ i=0; p=string; while ((*p != '\0') && (i < *count)) { array[i++]=StringToDouble(p,&q); p=q; while ((isspace((int) ((unsigned char) *p)) != 0) || (*p == ',')) p++; } return(array); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + S t r i n g T o k e n % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % StringToken() looks for any one of given delimiters and splits the string % into two separate strings by replacing the delimiter character found with a % nul character. % % The given string pointer is changed to point to the string following the % delimiter character found, or NULL. A pointer to the start of the % string is returned, representing the token before the delimiter. % % In may ways this is equivent to the strtok() C library function, but with % multiple delimiter characters rather than a delimiter string. % % The format of the StringToken method is: % % char *StringToken(const char *delimiters,char **string) % % A description of each parameter follows: % % o delimiters: one or more delimiters. % % o string: return the first token in the string. If none is found, return % NULL. % */ MagickExport char *StringToken(const char *delimiters,char **string) { char *q; register char *p; register const char *r; register int c, d; p=(*string); if (p == (char *) NULL) return((char *) NULL); q=p; for ( ; ; ) { c=(*p++); r=delimiters; do { d=(*r++); if (c == d) { if (c == '\0') p=(char *) NULL; else p[-1]='\0'; *string=p; return(q); } } while (d != '\0'); } } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S t r i n g T o L i s t % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % StringToList() converts a text string into a list by segmenting the text % string at each carriage return discovered. The list is converted to HEX % characters if any control characters are discovered within the text string. % % The format of the StringToList method is: % % char **StringToList(const char *text) % % A description of each parameter follows: % % o text: Specifies the string to segment into a list. % */ MagickExport char **StringToList(const char *text) { return(StringToStrings(text, (size_t *) NULL)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S t r i n g T o S t r i n g s % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % StringToList() converts a text string into a list by segmenting the text % string at each carriage return discovered. The list is converted to HEX % characters if any control characters are discovered within the text string. % % The format of the StringToList method is: % % char **StringToList(const char *text,size_t *lines) % % A description of each parameter follows: % % o text: Specifies the string to segment into a list. % % o count: Return value for the number of items in the list. % */ MagickExport char **StringToStrings(const char *text,size_t *count) { char **textlist; register const char *p; register ssize_t i; size_t lines; if (text == (char *) NULL) { if (count != (size_t *) NULL) *count=0; return((char **) NULL); } for (p=text; *p != '\0'; p++) if (((int) ((unsigned char) *p) < 32) && (isspace((int) ((unsigned char) *p)) == 0)) break; if (*p == '\0') { register const char *q; /* Convert string to an ASCII list. */ lines=1; for (p=text; *p != '\0'; p++) if (*p == '\n') lines++; textlist=(char **) AcquireQuantumMemory((size_t) lines+1UL, sizeof(*textlist)); if (textlist == (char **) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToConvertText"); p=text; for (i=0; i < (ssize_t) lines; i++) { for (q=p; *q != '\0'; q++) if ((*q == '\r') || (*q == '\n')) break; textlist[i]=(char *) AcquireQuantumMemory((size_t) (q-p)+1, sizeof(**textlist)); if (textlist[i] == (char *) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToConvertText"); (void) memcpy(textlist[i],p,(size_t) (q-p)); textlist[i][q-p]='\0'; if (*q == '\r') q++; p=q+1; } } else { char hex_string[MagickPathExtent]; register char *q; register ssize_t j; /* Convert string to a HEX list. */ lines=(size_t) (strlen(text)/CharsPerLine)+1; textlist=(char **) AcquireQuantumMemory((size_t) lines+1UL, sizeof(*textlist)); if (textlist == (char **) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToConvertText"); p=text; for (i=0; i < (ssize_t) lines; i++) { textlist[i]=(char *) AcquireQuantumMemory(2UL*MagickPathExtent, sizeof(**textlist)); if (textlist[i] == (char *) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToConvertText"); (void) FormatLocaleString(textlist[i],MagickPathExtent,"0x%08lx: ", (long) (CharsPerLine*i)); q=textlist[i]+strlen(textlist[i]); for (j=1; j <= (ssize_t) MagickMin(strlen(p),CharsPerLine); j++) { (void) FormatLocaleString(hex_string,MagickPathExtent,"%02x",*(p+j)); (void) CopyMagickString(q,hex_string,MagickPathExtent); q+=2; if ((j % 0x04) == 0) *q++=' '; } for ( ; j <= CharsPerLine; j++) { *q++=' '; *q++=' '; if ((j % 0x04) == 0) *q++=' '; } *q++=' '; for (j=1; j <= (ssize_t) MagickMin(strlen(p),CharsPerLine); j++) { if (isprint((int) ((unsigned char) *p)) != 0) *q++=(*p); else *q++='-'; p++; } *q='\0'; textlist[i]=(char *) ResizeQuantumMemory(textlist[i],q-textlist[i]+1, sizeof(**textlist)); if (textlist[i] == (char *) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToConvertText"); } } if (count != (size_t *) NULL) *count=lines; textlist[i]=(char *) NULL; return(textlist); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S t r i n g T o S t r i n g I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % StringToStringInfo() converts a string to a StringInfo type. % % The format of the StringToStringInfo method is: % % StringInfo *StringToStringInfo(const char *string) % % A description of each parameter follows: % % o string: The string. % */ MagickExport StringInfo *StringToStringInfo(const char *string) { StringInfo *string_info; assert(string != (const char *) NULL); string_info=AcquireStringInfo(strlen(string)); SetStringInfoDatum(string_info,(const unsigned char *) string); return(string_info); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S t r i p S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % StripString() strips any whitespace or quotes from the beginning and end of % a string of characters. % % The format of the StripString method is: % % void StripString(char *message) % % A description of each parameter follows: % % o message: Specifies an array of characters. % */ MagickExport void StripString(char *message) { register char *p, *q; size_t length; assert(message != (char *) NULL); if (*message == '\0') return; length=strlen(message); p=message; while (isspace((int) ((unsigned char) *p)) != 0) p++; if ((*p == '\'') || (*p == '"')) p++; q=message+length-1; while ((isspace((int) ((unsigned char) *q)) != 0) && (q > p)) q--; if (q > p) if ((*q == '\'') || (*q == '"')) q--; (void) memmove(message,p,(size_t) (q-p+1)); message[q-p+1]='\0'; for (p=message; *p != '\0'; p++) if (*p == '\n') *p=' '; } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % S u b s t i t u t e S t r i n g % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SubstituteString() performs string substitution on a string, replacing the % string with the substituted version. Buffer must be allocated from the heap. % If the string is matched and status, MagickTrue is returned otherwise % MagickFalse. % % The format of the SubstituteString method is: % % MagickBooleanType SubstituteString(char **string,const char *search, % const char *replace) % % A description of each parameter follows: % % o string: the string to perform replacements on; replaced with new % allocation if a replacement is made. % % o search: search for this string. % % o replace: replace any matches with this string. % */ MagickExport MagickBooleanType SubstituteString(char **string, const char *search,const char *replace) { MagickBooleanType status; register char *p; size_t extent, replace_extent, search_extent; ssize_t offset; status=MagickFalse; search_extent=0, replace_extent=0; for (p=strchr(*string,*search); p != (char *) NULL; p=strchr(p+1,*search)) { if (search_extent == 0) search_extent=strlen(search); if (strncmp(p,search,search_extent) != 0) continue; /* We found a match. */ status=MagickTrue; if (replace_extent == 0) replace_extent=strlen(replace); if (replace_extent > search_extent) { /* Make room for the replacement string. */ offset=(ssize_t) (p-(*string)); extent=strlen(*string)+replace_extent-search_extent+1; *string=(char *) ResizeQuantumMemory(*string,extent+MagickPathExtent, sizeof(*p)); if (*string == (char *) NULL) ThrowFatalException(ResourceLimitFatalError,"UnableToAcquireString"); p=(*string)+offset; } /* Replace string. */ if (search_extent != replace_extent) (void) memmove(p+replace_extent,p+search_extent, strlen(p+search_extent)+1); (void) memcpy(p,replace,replace_extent); p+=replace_extent-1; } return(status); }