Update:

* Fixes import cycles
* Fixes problems for streaming files in combination with utf-8 encoding

Fixes #58
Fixes #51

Merge remote-tracking branch 'origin/develop' into master

Author: Ron Radtke

.eslintrc

@@ -0,0 +1,30 @@
+module.exports = {
+    root: true,
+    rules: {
+        'prettier/prettier': 0,
+        "eqeqeq": 2,
+        "comma-dangle": 0,
+        "curly": 0,
+        "no-console": 1,
+        "no-debugger": 1,
+        "no-extra-semi": 2,
+        "no-extra-parens": 1,
+        "no-extra-boolean-cast": 1,
+        "no-cond-assign": 2,
+        "no-irregular-whitespace": 2,
+        "no-undef": 0,
+        "no-unused-vars": 0,
+        "semi": 2,
+        "semi-spacing": 2,
+        "valid-jsdoc": [
+            1,
+            {
+                "requireReturn": false,
+                "requireParamDescription": false,
+                "requireReturnDescription": false
+            }
+        ],
+        "radix": 0
+    },
+    "parser": "babel-eslint"
+};

.eslintrc.js

@@ -2,9 +2,9 @@
 // Use of this source code is governed by a MIT-style license that can be
 // found in the LICENSE file.
 
-import { NativeModules, Platform } from 'react-native'
+import { NativeModules, Platform } from 'react-native';
 
-const ReactNativeBlobUtil = NativeModules.ReactNativeBlobUtil
+const ReactNativeBlobUtil = NativeModules.ReactNativeBlobUtil;
 
 /**
  * Send an intent to open the file.
@@ -16,37 +16,37 @@ const ReactNativeBlobUtil = NativeModules.ReactNativeBlobUtil
 function actionViewIntent(path, mime, chooserTitle) {
   if(typeof chooserTitle === 'undefined') chooserTitle = null;
   if(Platform.OS === 'android')
-    return ReactNativeBlobUtil.actionViewIntent(path, mime, chooserTitle)
+    return ReactNativeBlobUtil.actionViewIntent(path, mime, chooserTitle);
   else
-    return Promise.reject('ReactNativeBlobUtil.android.actionViewIntent only supports Android.')
+    return Promise.reject('ReactNativeBlobUtil.android.actionViewIntent only supports Android.');
 }
 
 function getContentIntent(mime) {
   if(Platform.OS === 'android')
-    return ReactNativeBlobUtil.getContentIntent(mime)
+    return ReactNativeBlobUtil.getContentIntent(mime);
   else
-    return Promise.reject('ReactNativeBlobUtil.android.getContentIntent only supports Android.')
+    return Promise.reject('ReactNativeBlobUtil.android.getContentIntent only supports Android.');
 }
 
 function addCompleteDownload(config) {
   if(Platform.OS === 'android')
-    return ReactNativeBlobUtil.addCompleteDownload(config)
+    return ReactNativeBlobUtil.addCompleteDownload(config);
   else
-    return Promise.reject('ReactNativeBlobUtil.android.addCompleteDownload only supports Android.')
+    return Promise.reject('ReactNativeBlobUtil.android.addCompleteDownload only supports Android.');
 }
 
 function getSDCardDir() {
   if(Platform.OS === 'android')
-    return ReactNativeBlobUtil.getSDCardDir()
+    return ReactNativeBlobUtil.getSDCardDir();
   else
-    return Promise.reject('ReactNativeBlobUtil.android.getSDCardDir only supports Android.')
+    return Promise.reject('ReactNativeBlobUtil.android.getSDCardDir only supports Android.');
 }
 
 function getSDCardApplicationDir() {
   if(Platform.OS === 'android')
-    return ReactNativeBlobUtil.getSDCardApplicationDir()
+    return ReactNativeBlobUtil.getSDCardApplicationDir();
   else
-    return Promise.reject('ReactNativeBlobUtil.android.getSDCardApplicationDir only supports Android.')
+    return Promise.reject('ReactNativeBlobUtil.android.getSDCardApplicationDir only supports Android.');
 }
 
 
@@ -56,4 +56,4 @@ export default {
   addCompleteDownload,
   getSDCardDir,
   getSDCardApplicationDir,
-}
+};

android.js

@@ -21,9 +21,7 @@
 import com.facebook.react.modules.core.DeviceEventManagerModule;
 
 import java.io.*;
-import java.nio.ByteBuffer;
 import java.nio.charset.Charset;
-import java.nio.charset.CharsetEncoder;
 import java.security.MessageDigest;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -360,20 +358,25 @@ else if (resolved == null) {
                 fs = new FileInputStream(new File(path));
             }
 
-            byte[] buffer = new byte[chunkSize];
             int cursor = 0;
             boolean error = false;
 
             if (encoding.equalsIgnoreCase("utf8")) {
-                CharsetEncoder encoder = Charset.forName("UTF-8").newEncoder();
-                while ((cursor = fs.read(buffer)) != -1) {
-                    encoder.encode(ByteBuffer.wrap(buffer).asCharBuffer());
-                    String chunk = new String(buffer, 0, cursor);
+                InputStreamReader isr = new InputStreamReader(fs, Charset.forName("UTF-8"));
+                BufferedReader reader = new BufferedReader(isr, chunkSize);
+                char[] buffer = new char[chunkSize];
+                // read chunks of the string
+                while (reader.read(buffer, 0, chunkSize) != -1) {
+                    String chunk = new String(buffer);
                     emitStreamEvent(streamId, "data", chunk);
                     if (tick > 0)
                         SystemClock.sleep(tick);
                 }
+
+                reader.close();
+                isr.close();
             } else if (encoding.equalsIgnoreCase("ascii")) {
+                byte[] buffer = new byte[chunkSize];
                 while ((cursor = fs.read(buffer)) != -1) {
                     WritableArray chunk = Arguments.createArray();
                     for (int i = 0; i < cursor; i++) {
@@ -384,6 +387,7 @@ else if (resolved == null) {
                         SystemClock.sleep(tick);
                 }
             } else if (encoding.equalsIgnoreCase("base64")) {
+                byte[] buffer = new byte[chunkSize];
                 while ((cursor = fs.read(buffer)) != -1) {
                     if (cursor < chunkSize) {
                         byte[] copy = new byte[cursor];
@@ -407,7 +411,7 @@ else if (resolved == null) {
             if (!error)
                 emitStreamEvent(streamId, "end", "");
             fs.close();
-            buffer = null;
+
         } catch (FileNotFoundException err) {
             emitStreamEvent(
                     streamId,
@@ -710,8 +714,8 @@ static void exists(String path, Callback callback) {
     /**
      * List content of folder
      *
-     * @param path     Target folder
-     * @param callback JS context callback
+     * @param path    Target folder
+     * @param promise JS context promise
      */
     static void ls(String path, Promise promise) {
         try {