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(+imageRepsWithContentsOfFile:): If the filename has no extension, use the data to determine the type.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@19726 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
alexm 2004-07-13 00:59:37 +00:00
parent 0df41169fd
commit ea3ee18eba
2 changed files with 47 additions and 27 deletions
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67
Source/NSImageRep.m
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@ -156,6 +156,39 @@ static Class NSImageRep_class = NULL;
return nil;
}
/* Helper for +imageRepsWithContentsOfFile: and imageRepsWithContentsOfURL:.
It would make sense (and make initialization of images from data more natural
for the user) to make this a real method and call it +imageRepsWithData:, but
that's already the name of one of the method concrete image reps need to
implement, so we can't do that. */
+ (NSArray *) _imageRepsWithData: (NSData *)data
{
Class rep;
if (self == NSImageRep_class)
{
rep = [self imageRepClassForData: data];
}
else if ([self canInitWithData: data])
{
rep = self;
}
else
return nil;
if ([rep respondsToSelector: @selector(imageRepsWithData:)])
return [rep imageRepsWithData: data];
else if ([rep respondsToSelector: @selector(imageRepWithData:)])
{
NSImageRep *imageRep = [rep imageRepWithData: data];
if (imageRep != nil)
return [NSArray arrayWithObject: imageRep];
}
return nil;
}
+ (NSArray *) imageRepsWithContentsOfFile: (NSString *)filename
{
NSString *ext;
@ -165,9 +198,11 @@ static Class NSImageRep_class = NULL;
ext = [filename pathExtension];
if (!ext)
{
// FIXME: Should this be an exception?
NSLog(@"Extension missing from image filename - '%@'", filename);
return nil;
/* With no extension, we can't tell the type from the file name.
Use the data instead. */
NSData *data;
data = [NSData dataWithContentsOfFile: filename];
return [self _imageRepsWithData: data];
}
ext = [ext lowercaseString];
@ -212,34 +247,12 @@ static Class NSImageRep_class = NULL;
+ (NSArray *)imageRepsWithContentsOfURL:(NSURL *)anURL
{
Class rep;
NSData* data;
NSData *data;
// FIXME: Should we use the file type for URLs or only check the data?
data = [anURL resourceDataUsingCache: YES];
if (self == NSImageRep_class)
{
rep = [self imageRepClassForData: data];
}
else if ([self canInitWithData: data])
{
rep = self;
}
else
return nil;
if ([rep respondsToSelector: @selector(imageRepsWithData:)])
return [rep imageRepsWithData: data];
else if ([rep respondsToSelector: @selector(imageRepWithData:)])
{
NSImageRep *imageRep = [rep imageRepWithData: data];
if (imageRep != nil)
return [NSArray arrayWithObject: imageRep];
}
return nil;
return [self _imageRepsWithData: data];
}
+ (id) imageRepWithPasteboard: (NSPasteboard *)pasteboard