Add IOS assets library resource support to fs.cp #112

src/android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java

                 }
                 break;
         }
-//        if(!resp.isSuccessful())
-//            resp.body().close();
-        resp.body().close();
+        if(!resp.isSuccessful())
+            resp.body().close();
         releaseTaskResource();
     }
 

src/ios/RNFetchBlob/RNFetchBlob.m

 
 }
 
-RCT_EXPORT_METHOD(cp:(NSString *)path toPath:(NSString *)dest callback:(RCTResponseSenderBlock) callback) {
-    NSError * error = nil;
-    path = [RNFetchBlobFS getPathOfAsset:path];
-    BOOL result = [[NSFileManager defaultManager] copyItemAtURL:[NSURL fileURLWithPath:path] toURL:[NSURL fileURLWithPath:dest] error:&error];
-
-    if(error == nil)
-        callback(@[[NSNull null], @YES]);
-    else
-        callback(@[[error localizedDescription], @NO]);
-
+RCT_EXPORT_METHOD(cp:(NSString*)src toPath:(NSString *)dest callback:(RCTResponseSenderBlock) callback) {
+    
+//    path = [RNFetchBlobFS getPathOfAsset:path];
+    [RNFetchBlobFS getPathFromUri:src completionHandler:^(NSString *path, ALAssetRepresentation *asset) {
+        NSError * error = nil;
+        if(path == nil)
+        {
+            [RNFetchBlobFS writeAssetToPath:asset dest:dest];
+            callback(@[[NSNull null], @YES]);
+        }
+        else
+        {
+            BOOL result = [[NSFileManager defaultManager] copyItemAtURL:[NSURL fileURLWithPath:path] toURL:[NSURL fileURLWithPath:dest] error:&error];
+            
+            if(error == nil)
+                callback(@[[NSNull null], @YES]);
+            else
+                callback(@[[error localizedDescription], @NO]);
+        }
+    }];
+    
 }
 
 RCT_EXPORT_METHOD(mv:(NSString *)path toPath:(NSString *)dest callback:(RCTResponseSenderBlock) callback) {

src/ios/RNFetchBlobFS.h

      resolver:(RCTPromiseResolveBlock)resolve
      rejecter:(RCTPromiseRejectBlock)reject;
 //+ (void) writeFileFromFile:(NSString *)src toFile:(NSString *)dest append:(BOOL)append;
++ (void) writeAssetToPath:(ALAssetRepresentation * )rep dest:(NSString *)dest;
 
 // constructor
 - (id) init;

src/ios/RNFetchBlobFS.m

-//
+
 //  RNFetchBlobFS.m
 //  RNFetchBlob
 //
 
 + (NSNumber *) writeFileFromFile:(NSString *)src toFile:(NSString *)dest append:(BOOL)append
 {
+    
     NSInputStream * is = [[NSInputStream alloc] initWithFileAtPath:src];
     NSOutputStream * os = [[NSOutputStream alloc] initToFileAtPath:dest append:append];
     [is open];
     }
 }
 
++ (void) writeAssetToPath:(ALAssetRepresentation * )rep dest:(NSString *)dest
+{
+    int read = 0;
+    int cursor = 0;
+    Byte * buffer = (Byte *)malloc(10240);
+    NSOutputStream * ostream = [[NSOutputStream alloc] initToFileAtPath:dest append:NO];
+    [ostream open];
+    while((read = [rep getBytes:buffer fromOffset:cursor length:10240 error:nil]) > 0)
+    {
+        cursor+=10240;
+        [ostream write:buffer maxLength:read];
+    }
+    [ostream close];
+    free(buffer);
+    return;
+}
+
 @end