Cache clearing and isCached method

Author: romanbsd

SDURLCache.h

@@ -35,4 +35,14 @@
  */
 + (NSString *)defaultCachePath;
 
+/*
+ * Checks if the provided URL exists in cache.
+ */
+- (BOOL)isCached:(NSURL *)url;
+
+/*
+ * Removes the cache contents.
+ */
+- (BOOL)clearCache;
+
 @end

SDURLCache.m

@@ -503,6 +503,28 @@ - (void)removeAllCachedResponses
  [super removeAllCachedResponses];
 }
 
+- (BOOL)clearCache
+{
+ NSFileManager *fileManager = [[[NSFileManager alloc] init] autorelease];
+ return [fileManager removeItemAtPath:diskCachePath error:NULL];
+}
+
+- (BOOL)isCached:(NSURL *)url
+{
+ NSURLRequest *request = [NSURLRequest requestWithURL:url];
+ if ([super cachedResponseForRequest:request])
+ {
+ return YES;
+ }
+ NSString *cacheKey = [SDURLCache cacheKeyForURL:url];
+ NSString *cacheFile = [diskCachePath stringByAppendingPathComponent:cacheKey];
+ if ([[[[NSFileManager alloc] init] autorelease] fileExistsAtPath:cacheFile])
+ {
+ return YES;
+ }
+ return NO;
+}
+
 #pragma mark NSObject
 
 - (void)dealloc