This is how I have my code set up: an Objective-C protocol that has a class
function that returns an NSArray of UTIs that it can handle, and a member
function that handles the file type:
@protocol PcsxrFileHandle <NSObject>
+ (NSArray *)utisCanHandle;
- (BOOL)handleFile:(NSString *)theFile;
@end
However, as my code is currently set up, the UTIs are used in a few special
cases and are not called in determining what UTI opens what file. The code is
set up like so:
- (BOOL)application:(NSApplication *)theApplication openFile:(NSString
*)filename
{
NSString *utiFile = [[NSWorkspace sharedWorkspace] typeOfFile:filename
error:nil];
NSObject<PcsxrFileHandle> *hand = nil;
BOOL isHandled = NO;
if(UTTypeEqual(CFSTR("com.codeplex.pcsxr.plugin"),
(CFStringRef)utiFile)) {
hand = [[PcsxrPluginHandler alloc] init];
isHandled = [hand handleFile:filename];
} else if(UTTypeEqual(CFSTR("com.codeplex.pcsxr.memcard"),
(CFStringRef)utiFile)) {
hand = [[PcsxrMemCardHandler alloc] init];
isHandled = [hand handleFile:filename];
} else if(UTTypeEqual(CFSTR("com.codeplex.pcsxr.freeze"),
(CFStringRef)utiFile)) {
hand = [[PcsxrFreezeStateHandler alloc] init];
isHandled = [hand handleFile:filename];
} else if(UTTypeEqual(CFSTR("com.alcohol-soft.mdfdisc"),
(CFStringRef)utiFile) || UTTypeEqual(CFSTR("com.apple.disk-image-ndif"),
(CFStringRef)utiFile) || UTTypeEqual(CFSTR("public.iso-image"),
(CFStringRef)utiFile) || UTTypeEqual(CFSTR("com.codeplex.pcsxr.cuefile"),
(CFStringRef)utiFile)) {
hand = [[PcsxrDiscHandler alloc] init];
isHandled = [hand handleFile:HandleBinCue(filename)];
}
if (hand) [hand release];
return isHandled;
}
The PcsxrPluginHandler, PcsxrMemCardHandler, PcsxrFreezeStateHandler, and
PcsxrDiscHandler all implement the PcsxrFileHandle protocol.
Is there a way to put classes into some sort of array to go through and check
if the UTI of a file matches up to any of the UTIs that the class can handle?
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