mirror of
https://github.com/zhigang1992/PINRemoteImage.git
synced 2026-06-13 17:36:05 +08:00
0d5437cab6
* Don't bother archiving / unarchiving data. This change upgrades to PINCache 3.0.1-beta which supports custom archiving and unarchiving. This allows us to avoid using NSArchiver/Archiver which adds a small amount of disk space overhead and between .5 and 10 ms (on an iPhone 4) for each encode / decode. To support this, we *do* have to add versioning for the cache and destroy it for the old versions. I considered adding a process to migrate the images, but because that would have to occur on startup and process all existing images, it could cause issues for very large image cache databases, so I decided against that. * Fix warnings * Fix invalid object test * Cleanup, thanks @chrisdanford!
99 lines
2.8 KiB
Objective-C
99 lines
2.8 KiB
Objective-C
//
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// PINRemoteImageBasicCache.m
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// Pods
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//
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// Created by Aleksei Shevchenko on 7/28/16.
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//
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//
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#import "PINRemoteImageBasicCache.h"
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@interface PINRemoteImageBasicCache()
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@property (nonatomic, strong) NSCache *cache;
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@end
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@implementation PINRemoteImageBasicCache
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- (instancetype)init
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{
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self = [super init];
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if (self) {
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self.cache = [[NSCache alloc] init];
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}
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return self;
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}
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//******************************************************************************************************
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// Memory cache methods
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//******************************************************************************************************
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-(nullable id)objectFromMemoryCacheForKey:(NSString *)key
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{
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return [self.cache objectForKey:key];
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}
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-(void)cacheObjectInMemory:(id)object forKey:(NSString *)key withCost:(NSUInteger)cost
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{
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[self.cache setObject:object forKey:key cost:cost];
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}
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- (void)removeCachedObjectForKeyFromMemoryCache:(NSString *)key
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{
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[self.cache removeObjectForKey:key];
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}
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//******************************************************************************************************
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// Disk cache methods
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//******************************************************************************************************
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-(nullable id)objectFromDiskCacheForKey:(NSString *)key
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{
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return [self.cache objectForKey:key];
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}
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-(void)objectFromDiskCacheForKey:(NSString *)key completion:(PINRemoteImageCachingObjectBlock)completion
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{
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__weak typeof(self) weakSelf = self;
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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if (completion) {
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typeof(self) strongSelf = weakSelf;
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completion(strongSelf, key, [strongSelf.cache objectForKey:key]);
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}
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});
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}
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-(void)cacheObjectOnDisk:(id)object forKey:(NSString *)key
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{
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[self.cache setObject:object forKey:key];
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}
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- (BOOL)objectExistsInCacheForKey:(NSString *)key
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{
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return [self.cache objectForKey:key] != nil;
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}
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//******************************************************************************************************
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// Common methods, should apply to both in-memory and disk storage
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//******************************************************************************************************
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- (void)removeCachedObjectForKey:(NSString *)key
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{
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[self.cache removeObjectForKey:key];
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}
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- (void)removeCachedObjectForKey:(NSString *)key completion:(PINRemoteImageCachingObjectBlock)completion
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{
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__weak typeof(self) weakSelf = self;
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id object = [self.cache objectForKey:key];
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[self.cache removeObjectForKey:key];
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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if (completion) {
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typeof(self) strongSelf = weakSelf;
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completion(strongSelf, key, object);
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}
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});
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}
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- (void)removeAllCachedObjects
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{
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[self.cache removeAllObjects];
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}
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@end
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