63 lines
2.4 KiB
Objective-C
63 lines
2.4 KiB
Objective-C
// AFImageCache.m
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//
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// Copyright (c) 2011 Gowalla (http://gowalla.com/)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#import "AFImageCache.h"
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static inline NSString * AFImageCacheKeyFromURLAndCacheName(NSURL *url, NSString *cacheName) {
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return [[url absoluteString] stringByAppendingFormat:@"#%@", cacheName];
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}
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@implementation AFImageCache
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+ (AFImageCache *)sharedImageCache {
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static AFImageCache *_sharedImageCache = nil;
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static dispatch_once_t oncePredicate;
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dispatch_once(&oncePredicate, ^{
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_sharedImageCache = [[self alloc] init];
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});
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return _sharedImageCache;
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}
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#if __IPHONE_OS_VERSION_MIN_REQUIRED
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- (UIImage *)cachedImageForURL:(NSURL *)url
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cacheName:(NSString *)cacheName
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{
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return [UIImage imageWithData:[self objectForKey:AFImageCacheKeyFromURLAndCacheName(url, cacheName)]];
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}
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#elif __MAC_OS_X_VERSION_MIN_REQUIRED
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- (NSImage *)cachedImageForURL:(NSURL *)url
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cacheName:(NSString *)cacheName
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{
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return [[[NSImage alloc] initWithData:[self objectForKey:AFImageCacheKeyFromURLAndCacheName(url, cacheName)]] autorelease];
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}
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#endif
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- (void)cacheImageData:(NSData *)imageData
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forURL:(NSURL *)url
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cacheName:(NSString *)cacheName
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{
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[self setObject:[NSPurgeableData dataWithData:imageData] forKey:AFImageCacheKeyFromURLAndCacheName(url, cacheName)];
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}
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@end
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