RCTFileReaderModule.m
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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTFileReaderModule.h"
#import <React/RCTBridge.h>
#import <React/RCTConvert.h>
#import "RCTBlobManager.h"
@implementation RCTFileReaderModule
RCT_EXPORT_MODULE(FileReaderModule)
@synthesize bridge = _bridge;
RCT_EXPORT_METHOD(readAsText:(NSDictionary<NSString *, id> *)blob
encoding:(NSString *)encoding
resolve:(RCTPromiseResolveBlock)resolve
reject:(RCTPromiseRejectBlock)reject)
{
RCTBlobManager *blobManager = [[self bridge] moduleForClass:[RCTBlobManager class]];
NSData *data = [blobManager resolve:blob];
if (data == nil) {
reject(RCTErrorUnspecified,
[NSString stringWithFormat:@"Unable to resolve data for blob: %@", [RCTConvert NSString:blob[@"blobId"]]], nil);
} else {
NSStringEncoding stringEncoding;
if (encoding == nil) {
stringEncoding = NSUTF8StringEncoding;
} else {
stringEncoding = CFStringConvertEncodingToNSStringEncoding(CFStringConvertIANACharSetNameToEncoding((CFStringRef) encoding));
}
NSString *text = [[NSString alloc] initWithData:data encoding:stringEncoding];
resolve(text);
}
}
RCT_EXPORT_METHOD(readAsDataURL:(NSDictionary<NSString *, id> *)blob
resolve:(RCTPromiseResolveBlock)resolve
reject:(RCTPromiseRejectBlock)reject)
{
RCTBlobManager *blobManager = [[self bridge] moduleForClass:[RCTBlobManager class]];
NSData *data = [blobManager resolve:blob];
if (data == nil) {
reject(RCTErrorUnspecified,
[NSString stringWithFormat:@"Unable to resolve data for blob: %@", [RCTConvert NSString:blob[@"blobId"]]], nil);
} else {
NSString *type = [RCTConvert NSString:blob[@"type"]];
NSString *text = [NSString stringWithFormat:@"data:%@;base64,%@",
type != nil && [type length] > 0 ? type : @"application/octet-stream",
[data base64EncodedStringWithOptions:0]];
resolve(text);
}
}
@end