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use a constant for signature and use for now only the bytes needed for TGA

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This commit is contained in:
Riccardo Mottola 2024-05-21 14:38:26 +02:00
parent 7feeccceab
commit 3ec731943c
1 changed files with 4 additions and 2 deletions
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6
Source/GSImageMagickImageRep.m
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@ -125,6 +125,8 @@
return bmp;
}
#define SIGNATURE_LENGTH 18
+ (NSArray*) imageRepsWithData: (NSData *)data allImages: (BOOL)allImages
{
NSMutableArray *reps = [NSMutableArray array];
@ -133,7 +135,7 @@
ImageInfo *imageinfo = CloneImageInfo(NULL);
Image *images;
Image *image;
char signature[32];
char signature[SIGNATURE_LENGTH];
// Set the background color to transparent
// (otherwise SVG's are rendered against a white background by default)
@ -143,7 +145,7 @@
QueryColorDatabase("none", &imageinfo->background_color, exception);
#endif
memset(signature, 0, 32);
memset(signature, 0, SIGNATURE_LENGTH);
[data getBytes: signature range: NSMakeRange([data length] - 18, 18)];
if (strncmp(signature, "TRUEVISION-XFILE.", 17) == 0)
{