Created
November 13, 2013 14:18
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| +(NSString *)cacheFilenameForURL:(NSURL *)resourceURL atSize:(CGSize)size atScaleFactor:(CGFloat)scaleFactor atPage:(int)page | |
| { | |
| NSString *cacheFilename = nil; | |
| #ifdef UIIMAGE_PDF_CACHEING | |
| NSFileManager *fileManager = [ NSFileManager defaultManager ]; | |
| NSString *filePath = [ resourceURL path ]; | |
| //NSLog( @"filePath: %@", filePath ); | |
| NSDictionary *fileAttributes = [ fileManager attributesOfItemAtPath:filePath error:NULL ]; | |
| //NSLog( @"fileAttributes: %@", fileAttributes ); | |
| NSString *cacheRoot = [ NSString stringWithFormat:@"%@ - %@ - %@ - %@ - %d", [ filePath lastPathComponent ], [ fileAttributes objectForKey:NSFileSize ], [ fileAttributes objectForKey:NSFileModificationDate ], NSStringFromCGSize(CGSizeMake( size.width * scaleFactor, size.height * scaleFactor )), page ]; | |
| //NSLog( @"cacheRoot: %@", cacheRoot ); | |
| NSString *MD5 = [ cacheRoot MD5 ]; | |
| //NSLog( @"MD5: %@", MD5 ); | |
| NSString *cachesDirectory = [ NSSearchPathForDirectoriesInDomains( NSCachesDirectory, NSUserDomainMask, YES ) objectAtIndex:0 ]; | |
| NSString *cacheDirectory = [ NSString stringWithFormat:@"%@/__PDF_CACHE__", cachesDirectory ]; | |
| //NSLog( @"cacheDirectory: %@", cacheDirectory ); | |
| [ fileManager createDirectoryAtPath:cacheDirectory withIntermediateDirectories:YES attributes:nil error:NULL ]; | |
| cacheFilename = [ NSString stringWithFormat:@"%@/%@.png", cacheDirectory, MD5 ]; | |
| //NSLog( @"cacheFilename: %@", cacheFilename ); | |
| #endif | |
| return cacheFilename; | |
| } |
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