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list.c
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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% L IIIII SSSSS TTTTT %
% L I SS T %
% L I SSS T %
% L I SS T %
% LLLLL IIIII SSSSS T %
% %
% %
% MagickCore Image List Methods %
% %
% Software Design %
% Cristy %
% December 2002 %
% %
% %
% Copyright 1999-2018 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://www.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/list.h"
#include "MagickCore/memory_.h"
#include "MagickCore/string_.h"
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% A p p e n d I m a g e T o L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% AppendImageToList() appends the second image list to the end of the first
% list. The given image list pointer is left unchanged, unless it was empty.
%
% The format of the AppendImageToList method is:
%
% AppendImageToList(Image *images,const Image *image)
%
% A description of each parameter follows:
%
% o images: the image list to be appended to.
%
% o image: the appended image or image list.
%
*/
MagickExport void AppendImageToList(Image **images,const Image *append)
{
register Image
*p,
*q;
assert(images != (Image **) NULL);
if (append == (Image *) NULL)
return;
assert(append->signature == MagickCoreSignature);
if (append->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",append->filename);
if ((*images) == (Image *) NULL)
{
*images=(Image *) append;
return;
}
assert((*images)->signature == MagickCoreSignature);
p=GetLastImageInList(*images);
q=GetFirstImageInList(append);
p->next=q;
q->previous=p;
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% C l o n e I m a g e L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% CloneImageList() returns a duplicate of the image list.
%
% The format of the CloneImageList method is:
%
% Image *CloneImageList(const Image *images,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o images: the image list.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image *CloneImageList(const Image *images,ExceptionInfo *exception)
{
Image
*clone,
*image;
register Image
*p;
if (images == (Image *) NULL)
return((Image *) NULL);
assert(images->signature == MagickCoreSignature);
while (images->previous != (Image *) NULL)
images=images->previous;
image=(Image *) NULL;
for (p=(Image *) NULL; images != (Image *) NULL; images=images->next)
{
clone=CloneImage(images,0,0,MagickTrue,exception);
if (clone == (Image *) NULL)
{
if (image != (Image *) NULL)
image=DestroyImageList(image);
return((Image *) NULL);
}
if (image == (Image *) NULL)
{
image=clone;
p=image;
continue;
}
p->next=clone;
clone->previous=p;
p=p->next;
}
return(image);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% C l o n e I m a g e s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% CloneImages() clones one or more images from an image sequence, using a
% comma separated list of image numbers or ranges.
%
% The numbers start at 0 for the first image in the list, while negative
% numbers refer to images starting counting from the end of the range. Images
% may be refered to multiple times to clone them multiple times. Images
% refered beyond the available number of images in list are ignored.
%
% Images referenced may be reversed, and results in a clone of those images
% also being made with a reversed order.
%
% The format of the CloneImages method is:
%
% Image *CloneImages(const Image *images,const char *scenes,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o images: the image sequence.
%
% o scenes: This character string specifies which scenes to clone
% (e.g. 1,3-5,7-3,2).
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image *CloneImages(const Image *images,const char *scenes,
ExceptionInfo *exception)
{
char
*p;
const Image
*next;
Image
*clone_images,
*image;
long
first,
last,
step;
register ssize_t
i;
size_t
length;
assert(images != (const Image *) NULL);
assert(images->signature == MagickCoreSignature);
assert(scenes != (char *) NULL);
if (images->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
clone_images=NewImageList();
images=GetFirstImageInList(images);
length=GetImageListLength(images);
for (p=(char *) scenes; *p != '\0';)
{
while ((isspace((int) ((unsigned char) *p)) != 0) || (*p == ','))
p++;
first=strtol(p,&p,10);
if (first < 0)
first+=(long) length;
last=first;
while (isspace((int) ((unsigned char) *p)) != 0)
p++;
if (*p == '-')
{
last=strtol(p+1,&p,10);
if (last < 0)
last+=(long) length;
}
for (step=first > last ? -1 : 1; first != (last+step); first+=step)
{
i=0;
for (next=images; next != (Image *) NULL; next=GetNextImageInList(next))
{
if (i == (ssize_t) first)
{
image=CloneImage(next,0,0,MagickTrue,exception);
if (image == (Image *) NULL)
break;
AppendImageToList(&clone_images,image);
}
i++;
}
}
}
return(GetFirstImageInList(clone_images));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% D e l e t e I m a g e F r o m L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DeleteImageFromList() deletes an image from the list. List pointer
% is moved to the next image, if one is present. See RemoveImageFromList().
%
% The format of the DeleteImageFromList method is:
%
% DeleteImageFromList(Image **images)
%
% A description of each parameter follows:
%
% o images: the image list.
%
*/
MagickExport void DeleteImageFromList(Image **images)
{
Image
*image;
image=RemoveImageFromList(images);
if (image != (Image *) NULL)
(void) DestroyImage(image);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% D e l e t e I m a g e s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DeleteImages() deletes one or more images from an image sequence, using a
% comma separated list of image numbers or ranges.
%
% The numbers start at 0 for the first image, while negative numbers refer to
% images starting counting from the end of the range. Images may be refered to
% multiple times without problems. Image refered beyond the available number
% of images in list are ignored.
%
% If the referenced images are in the reverse order, that range will be
% completely ignored, unlike CloneImages().
%
% The format of the DeleteImages method is:
%
% DeleteImages(Image **images,const char *scenes,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o images: the image sequence.
%
% o scenes: This character string specifies which scenes to delete
% (e.g. 1,3-5,-2-6,2).
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport void DeleteImages(Image **images,const char *scenes,
ExceptionInfo *exception)
{
char
*p;
Image
*image;
long
first,
last;
MagickBooleanType
*delete_list;
register ssize_t
i;
size_t
length;
assert(images != (Image **) NULL);
assert((*images)->signature == MagickCoreSignature);
assert(scenes != (char *) NULL);
if ((*images)->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
(*images)->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
*images=GetFirstImageInList(*images);
length=GetImageListLength(*images);
delete_list=(MagickBooleanType *) AcquireQuantumMemory(length,
sizeof(*delete_list));
if (delete_list == (MagickBooleanType *) NULL)
{
(void) ThrowMagickException(exception,GetMagickModule(),
ResourceLimitError,"MemoryAllocationFailed","`%s'",(*images)->filename);
return;
}
image=(*images);
for (i=0; i < (ssize_t) length; i++)
delete_list[i]=MagickFalse;
/*
Note which images will be deleted, avoid duplicates.
*/
for (p=(char *) scenes; *p != '\0';)
{
while ((isspace((int) ((unsigned char) *p)) != 0) || (*p == ','))
p++;
first=strtol(p,&p,10);
if (first < 0)
first+=(long) length;
last=first;
while (isspace((int) ((unsigned char) *p)) != 0)
p++;
if (*p == '-')
{
last=strtol(p+1,&p,10);
if (last < 0)
last+=(long) length;
}
if (first > last)
continue;
for (i=(ssize_t) first; i <= (ssize_t) last; i++)
if ((i >= 0) && (i < (ssize_t) length))
delete_list[i]=MagickTrue;
}
/*
Delete images marked for deletion, once only.
*/
image=(*images);
for (i=0; i < (ssize_t) length; i++)
{
*images=image;
image=GetNextImageInList(image);
if (delete_list[i] != MagickFalse)
DeleteImageFromList(images);
}
(void) RelinquishMagickMemory(delete_list);
*images=GetFirstImageInList(*images);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% D e s t r o y I m a g e L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DestroyImageList() destroys an image list.
%
% The format of the DestroyImageList method is:
%
% Image *DestroyImageList(Image *image)
%
% A description of each parameter follows:
%
% o image: the image sequence.
%
*/
MagickExport Image *DestroyImageList(Image *images)
{
if (images == (Image *) NULL)
return((Image *) NULL);
assert(images->signature == MagickCoreSignature);
if (images->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
while (images != (Image *) NULL)
DeleteImageFromList(&images);
return((Image *) NULL);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% D u p l i c a t e I m a g e s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DuplicateImages() duplicates one or more images from an image sequence,
% using a count and a comma separated list of image numbers or ranges.
%
% The numbers start at 0 for the first image, while negative numbers refer to
% images starting counting from the end of the range. Images may be refered to
% multiple times without problems. Image refered beyond the available number
% of images in list are ignored.
%
% The format of the DuplicateImages method is:
%
% Image *DuplicateImages(Image *images,const size_t number_duplicates,
% const char *scenes,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o images: the image sequence.
%
% o number_duplicates: duplicate the image sequence this number of times.
%
% o scenes: This character string specifies which scenes to duplicate (e.g.
% 1,3-5,-2-6,2).
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image *DuplicateImages(Image *images,
const size_t number_duplicates,const char *scenes,ExceptionInfo *exception)
{
Image
*clone_images,
*duplicate_images;
register ssize_t
i;
/*
Duplicate images.
*/
assert(images != (Image *) NULL);
assert(images->signature == MagickCoreSignature);
assert(scenes != (char *) NULL);
if (images->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
duplicate_images=NewImageList();
for (i=0; i < (ssize_t) number_duplicates; i++)
{
clone_images=CloneImages(images,scenes,exception);
AppendImageToList(&duplicate_images,clone_images);
}
return(duplicate_images);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t F i r s t I m a g e I n L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetFirstImageInList() returns a pointer to the first image in the list.
%
% The format of the GetFirstImageInList method is:
%
% Image *GetFirstImageInList(const Image *images)
%
% A description of each parameter follows:
%
% o images: the image list.
%
*/
MagickExport Image *GetFirstImageInList(const Image *images)
{
register const Image
*p;
if (images == (Image *) NULL)
return((Image *) NULL);
assert(images->signature == MagickCoreSignature);
for (p=images; p->previous != (Image *) NULL; p=p->previous) ;
return((Image *) p);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t I m a g e F r o m L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetImageFromList() returns an image at the specified index from the image
% list. Starting with 0 as the first image in the list.
%
% A negative offset will return the image from the end of the list, such that
% an index of -1 is the last image.
%
% If no such image exists at the specified offset a NULL image pointer is
% returned. This will only happen if index is less that the negative of
% the list length, or larger than list length -1. EG: ( -N to N-1 )
%
% The format of the GetImageFromList method is:
%
% Image *GetImageFromList(const Image *images,const ssize_t index)
%
% A description of each parameter follows:
%
% o images: the image list.
%
% o index: the position within the list.
%
*/
MagickExport Image *GetImageFromList(const Image *images,const ssize_t index)
{
register const Image
*p;
register ssize_t
i;
if (images == (Image *) NULL)
return((Image *) NULL);
assert(images->signature == MagickCoreSignature);
if (images->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
/*
Designed to efficiently find first image (index == 0), or last image
(index == -1) as appropriate, without to go through the whole image list.
That is it tries to avoid 'counting the whole list' to handle the
most common image indexes.
*/
if ( index < 0 )
{
p=GetLastImageInList(images);
for (i=-1; p != (Image *) NULL; p=p->previous)
if (i-- == index)
break;
}
else
{
p=GetFirstImageInList(images);
for (i=0; p != (Image *) NULL; p=p->next)
if (i++ == index)
break;
}
return((Image *) p);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t I m a g e I n d e x I n L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetImageIndexInList() returns the offset in the list of the specified image.
%
% The format of the GetImageIndexInList method is:
%
% ssize_t GetImageIndexInList(const Image *images)
%
% A description of each parameter follows:
%
% o images: the image list.
%
*/
MagickExport ssize_t GetImageIndexInList(const Image *images)
{
register ssize_t
i;
if (images == (const Image *) NULL)
return(-1);
assert(images->signature == MagickCoreSignature);
for (i=0; images->previous != (Image *) NULL; i++)
images=images->previous;
return(i);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t I m a g e L i s t L e n g t h %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetImageListLength() returns the length of the list (the number of images in
% the list).
%
% The format of the GetImageListLength method is:
%
% size_t GetImageListLength(const Image *images)
%
% A description of each parameter follows:
%
% o images: the image list.
%
*/
MagickExport size_t GetImageListLength(const Image *images)
{
register ssize_t
i;
if (images == (Image *) NULL)
return(0);
assert(images->signature == MagickCoreSignature);
if (images->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
images=GetLastImageInList(images);
for (i=0; images != (Image *) NULL; images=images->previous)
i++;
return((size_t) i);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t L a s t I m a g e I n L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetLastImageInList() returns a pointer to the last image in the list.
%
% The format of the GetLastImageInList method is:
%
% Image *GetLastImageInList(const Image *images)
%
% A description of each parameter follows:
%
% o images: the image list.
%
*/
MagickExport Image *GetLastImageInList(const Image *images)
{
register const Image
*p;
if (images == (Image *) NULL)
return((Image *) NULL);
assert(images->signature == MagickCoreSignature);
for (p=images; p->next != (Image *) NULL; p=p->next) ;
return((Image *) p);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t N e x t I m a g e I n L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetNextImageInList() returns the next image in the list.
%
% The format of the GetNextImageInList method is:
%
% Image *GetNextImageInList(const Image *images)
%
% A description of each parameter follows:
%
% o images: the image list.
%
*/
MagickExport Image *GetNextImageInList(const Image *images)
{
if (images == (Image *) NULL)
return((Image *) NULL);
assert(images->signature == MagickCoreSignature);
if (images->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
return(images->next);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t P r e v i o u s I m a g e I n L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetPreviousImageInList() returns the previous image in the list.
%
% The format of the GetPreviousImageInList method is:
%
% Image *GetPreviousImageInList(const Image *images)
%
% A description of each parameter follows:
%
% o images: the image list.
%
*/
MagickExport Image *GetPreviousImageInList(const Image *images)
{
if (images == (Image *) NULL)
return((Image *) NULL);
assert(images->signature == MagickCoreSignature);
return(images->previous);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% I m a g e L i s t T o A r r a y %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ImageListToArray() is a convenience method that converts an image list to
% a sequential array, with a NULL image pointer at the end of the array.
%
% The images remain part of the original image list, with the array providing
% an alternative means of indexing the image array.
%
% group = ImageListToArray(images, exception);
% while (i = 0; group[i] != (Image *) NULL; i++)
% printf("%s\n", group[i]->filename);
% printf("%d images\n", i);
% group = RelinquishMagickMemory(group);
%
% The format of the ImageListToArray method is:
%
% Image **ImageListToArray(const Image *images,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: the image list.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image **ImageListToArray(const Image *images,
ExceptionInfo *exception)
{
Image
**group;
register ssize_t
i;
if (images == (Image *) NULL)
return((Image **) NULL);
assert(images->signature == MagickCoreSignature);
if (images->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
group=(Image **) AcquireQuantumMemory((size_t) GetImageListLength(images)+1UL,
sizeof(*group));
if (group == (Image **) NULL)
{
(void) ThrowMagickException(exception,GetMagickModule(),
ResourceLimitError,"MemoryAllocationFailed","`%s'",images->filename);
return((Image **) NULL);
}
images=GetFirstImageInList(images);
for (i=0; images != (Image *) NULL; images=images->next)
group[i++]=(Image *) images;
group[i]=(Image *) NULL;
return(group);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I n s e r t I m a g e I n L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% InsertImageInList() insert the given image or image list, into the first
% image list, immediately AFTER the image pointed to. The given image list
% pointer is left unchanged unless previously empty.
%
% The format of the InsertImageInList method is:
%
% InsertImageInList(Image **images,Image *insert)
%
% A description of each parameter follows:
%
% o images: the image list to insert into.
%
% o insert: the image list to insert.
%
*/
MagickExport void InsertImageInList(Image **images,Image *insert)
{
Image
*split;
assert(images != (Image **) NULL);
assert(insert != (Image *) NULL);
assert(insert->signature == MagickCoreSignature);
if (insert->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",insert->filename);
if ((*images) == (Image *) NULL)
return;
assert((*images)->signature == MagickCoreSignature);
split=SplitImageList(*images);
AppendImageToList(images,insert);
AppendImageToList(images,split);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% N e w I m a g e L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% NewImageList() creates an empty image list.
%
% The format of the NewImageList method is:
%
% Image *NewImageList(void)
%
*/
MagickExport Image *NewImageList(void)
{
return((Image *) NULL);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% P r e p e n d I m a g e T o L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% PrependImageToList() prepends the image to the beginning of the list.
%
% The format of the PrependImageToList method is:
%
% PrependImageToList(Image *images,Image *image)
%
% A description of each parameter follows:
%
% o images: the image list.
%
% o image: the image.
%
*/
MagickExport void PrependImageToList(Image **images,Image *prepend)
{
if (*images == (Image *) NULL)
{
*images=prepend;
return;
}
AppendImageToList(&prepend,*images);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e m o v e I m a g e F r o m L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RemoveImageFromList() removes and returns the image pointed to.
%
% The given image list pointer is set to point to the next image in list
% if it exists, otherwise it is set to the previous image, or NULL if list
% was emptied.
%
% The format of the RemoveImageFromList method is:
%
% Image *RemoveImageFromList(Image **images)
%
% A description of each parameter follows:
%
% o images: the image list.
%
*/
MagickExport Image *RemoveImageFromList(Image **images)
{
register Image
*p;
assert(images != (Image **) NULL);
if ((*images) == (Image *) NULL)
return((Image *) NULL);
assert((*images)->signature == MagickCoreSignature);
if ((*images)->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
(*images)->filename);
p=(*images);
if ((p->previous == (Image *) NULL) && (p->next == (Image *) NULL))
*images=(Image *) NULL;
else
{
if (p->previous != (Image *) NULL)
{
p->previous->next=p->next;