Add changes from BIP project

AFCache+PrivateAPI.h

@@ -43,6 +43,12 @@
 - (void)removeItemsForURL:(NSURL*)url;
 - (void)removeItemForURL:(NSURL*)url itemDelegate:(id)itemDelegate;
 - (NSFileHandle*)createFileForItem:(AFCacheableItem*)cacheableItem;
+- (void)addItemToDownloadQueue:(AFCacheableItem*)item;
+- (void)removeFromDownloadQueue:(AFCacheableItem*)item;
+- (void)removeFromDownloadQueueAndLoadNext:(AFCacheableItem*)item;
+- (void)fillPendingConnections;
+- (BOOL)isQueuedURL:(NSURL*)url;
+- (void)downloadNextEnqueuedItem;
 - (void)downloadItem:(AFCacheableItem*)item;
 - (void)registerItem:(AFCacheableItem*)item;
 - (void)signalItemsForURL:(NSURL*)url usingSelector:(SEL)selector;
@@ -57,8 +63,12 @@
 - (void)setDownloadStartedFileAttributes;
 - (void)setDownloadFinishedFileAttributes;
 - (BOOL)isDownloading;
+- (BOOL)hasDownloadFileAttribute;
+- (BOOL)hasValidContentLength;
 - (uint64_t)getContentLengthFromFile;
 - (void)appendData:(NSData*)newData;
 - (void)signalItems:(NSArray*)items usingSelector:(SEL)selector;
+- (void)signalItemsDidFinish:(NSArray*)items;
+- (void)signalItemsDidFail:(NSArray*)items;
 
 @end

AFCache.h

@@ -32,6 +32,9 @@
 // max cache item size in bytes
 #define kAFCacheDefaultMaxFileSize 1000000
 
+// max number of concurrent connections 
+#define kAFCacheDefaultConcurrentConnections 5
+
 //#define AFCACHE_LOGGING_ENABLED true
 #define kHTTPHeaderIfModifiedSince @"If-Modified-Since"
 #define kHTTPHeaderIfNoneMatch @"If-None-Match"
@@ -68,8 +71,10 @@ enum {
 	NSMutableDictionary *cacheInfoStore;
 	NSMutableDictionary *pendingConnections;
     NSMutableDictionary *clientItems;
+	NSMutableArray		*downloadQueue;
 	BOOL _offline;
 	int requestCounter;
+	int concurrentConnections;
 	double maxItemFileSize;
 	double diskCacheDisplacementTresholdSize;
 	NSDictionary *suffixToMimeTypeMap;
@@ -83,16 +88,16 @@ enum {
 @property (nonatomic, copy) NSString *dataPath;
 @property (nonatomic, retain) NSMutableDictionary *cacheInfoStore;
 @property (nonatomic, retain) NSMutableDictionary *pendingConnections;
+@property (nonatomic, retain) NSMutableArray *downloadQueue;
 @property (nonatomic, retain) NSDictionary *suffixToMimeTypeMap;
 @property (nonatomic, retain) NSDictionary *clientItems;
 @property (nonatomic, assign) double maxItemFileSize;
 @property (nonatomic, assign) double diskCacheDisplacementTresholdSize;
+@property (nonatomic, assign) int concurrentConnections;
 @property BOOL downloadPermission;
 
 + (AFCache *)sharedInstance;
 
-- (AFCacheableItem *)cachedObjectForURL: (NSURL *) url
-                                options: (int) options;
 
 - (AFCacheableItem *)cachedObjectForURL: (NSURL *) url
                                delegate: (id) aDelegate;
@@ -120,6 +125,9 @@ enum {
  *
  */
 
+- (AFCacheableItem *)cachedObjectForURL: (NSURL *) url
+                                options: (int) options __AVAILABILITY_INTERNAL_DEPRECATED;
+
 - (AFCacheableItem *)cachedObjectForURL: (NSURL *) url
 							   delegate: (id) aDelegate
 							   selector: (SEL) aSelector
@@ -144,6 +152,8 @@ enum {
 - (BOOL)hasCachedItemForURL:(NSURL *)url;
 - (unsigned long)diskCacheSize;
 - (void)cancelAsynchronousOperationsForURL:(NSURL *)url itemDelegate:(id)aDelegate;
+- (void)cancelAsynchronousOperationsForURL:(NSURL *)url itemDelegate:(id)aDelegate didLoadSelector:(SEL)selector;
+- (void)cancelAsynchronousOperationsForDelegate:(id)aDelegate;
 - (NSArray*)cacheableItemsForURL:(NSURL*)url;
-
+- (void)flushDownloadQueue;
 @end