This app provides monitoring and information features for the common freifunk user and the technical stuff of a freifunk community.
Code base is taken from a TUM Practical Course project and added here to see if Freifunk Altdorf can use it.
https://www.freifunk-altdorf.de
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115 lines
3.3 KiB
115 lines
3.3 KiB
/** |
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* Copyright (c) 2015-present, Facebook, Inc. |
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* |
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* This source code is licensed under the MIT license found in the |
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* LICENSE file in the root directory of this source tree. |
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*/ |
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#import "RCTAssetsLibraryRequestHandler.h" |
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#import <stdatomic.h> |
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#import <AssetsLibrary/AssetsLibrary.h> |
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#import <MobileCoreServices/MobileCoreServices.h> |
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#import <React/RCTBridge.h> |
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#import <React/RCTUtils.h> |
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@implementation RCTAssetsLibraryRequestHandler |
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{ |
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ALAssetsLibrary *_assetsLibrary; |
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} |
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RCT_EXPORT_MODULE() |
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@synthesize bridge = _bridge; |
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- (ALAssetsLibrary *)assetsLibrary |
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{ |
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return _assetsLibrary ?: (_assetsLibrary = [ALAssetsLibrary new]); |
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} |
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#pragma mark - RCTURLRequestHandler |
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- (BOOL)canHandleRequest:(NSURLRequest *)request |
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{ |
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return [request.URL.scheme caseInsensitiveCompare:@"assets-library"] == NSOrderedSame; |
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} |
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- (id)sendRequest:(NSURLRequest *)request |
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withDelegate:(id<RCTURLRequestDelegate>)delegate |
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{ |
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__block atomic_bool cancelled = ATOMIC_VAR_INIT(NO); |
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void (^cancellationBlock)(void) = ^{ |
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atomic_store(&cancelled, YES); |
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}; |
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[[self assetsLibrary] assetForURL:request.URL resultBlock:^(ALAsset *asset) { |
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if (atomic_load(&cancelled)) { |
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return; |
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} |
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if (asset) { |
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ALAssetRepresentation *representation = [asset defaultRepresentation]; |
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NSInteger length = (NSInteger)representation.size; |
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CFStringRef MIMEType = UTTypeCopyPreferredTagWithClass((__bridge CFStringRef _Nonnull)(representation.UTI), kUTTagClassMIMEType); |
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NSURLResponse *response = |
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[[NSURLResponse alloc] initWithURL:request.URL |
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MIMEType:(__bridge NSString *)(MIMEType) |
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expectedContentLength:length |
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textEncodingName:nil]; |
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[delegate URLRequest:cancellationBlock didReceiveResponse:response]; |
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NSError *error = nil; |
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uint8_t *buffer = (uint8_t *)malloc((size_t)length); |
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if ([representation getBytes:buffer |
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fromOffset:0 |
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length:length |
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error:&error]) { |
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NSData *data = [[NSData alloc] initWithBytesNoCopy:buffer |
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length:length |
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freeWhenDone:YES]; |
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[delegate URLRequest:cancellationBlock didReceiveData:data]; |
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[delegate URLRequest:cancellationBlock didCompleteWithError:nil]; |
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} else { |
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free(buffer); |
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[delegate URLRequest:cancellationBlock didCompleteWithError:error]; |
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} |
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} else { |
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NSString *errorMessage = [NSString stringWithFormat:@"Failed to load asset" |
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" at URL %@ with no error message.", request.URL]; |
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NSError *error = RCTErrorWithMessage(errorMessage); |
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[delegate URLRequest:cancellationBlock didCompleteWithError:error]; |
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} |
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} failureBlock:^(NSError *loadError) { |
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if (atomic_load(&cancelled)) { |
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return; |
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} |
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[delegate URLRequest:cancellationBlock didCompleteWithError:loadError]; |
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}]; |
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return cancellationBlock; |
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} |
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- (void)cancelRequest:(id)requestToken |
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{ |
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((void (^)(void))requestToken)(); |
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} |
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@end |
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@implementation RCTBridge (RCTAssetsLibraryImageLoader) |
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- (ALAssetsLibrary *)assetsLibrary |
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{ |
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return [[self moduleForClass:[RCTAssetsLibraryRequestHandler class]] assetsLibrary]; |
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} |
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@end
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