| /* |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the |
| specific language governing permissions and limitations |
| under the License. |
| */ |
| package org.apache.cordova.file; |
| |
| import android.database.Cursor; |
| import android.net.Uri; |
| import android.webkit.MimeTypeMap; |
| |
| import org.apache.cordova.CordovaInterface; |
| import org.apache.cordova.LOG; |
| |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Locale; |
| |
| public class FileHelper { |
| private static final String LOG_TAG = "FileUtils"; |
| private static final String _DATA = "_data"; |
| |
| /** |
| * Returns the real path of the given URI string. |
| * If the given URI string represents a content:// URI, the real path is retrieved from the media store. |
| * |
| * @param uriString the URI string of the audio/image/video |
| * @param cordova the current application context |
| * @return the full path to the file |
| */ |
| @SuppressWarnings("deprecation") |
| public static String getRealPath(String uriString, CordovaInterface cordova) { |
| String realPath = null; |
| |
| if (uriString.startsWith("content://")) { |
| String[] proj = { _DATA }; |
| Cursor cursor = cordova.getActivity().managedQuery(Uri.parse(uriString), proj, null, null, null); |
| int column_index = cursor.getColumnIndexOrThrow(_DATA); |
| cursor.moveToFirst(); |
| realPath = cursor.getString(column_index); |
| if (realPath == null) { |
| LOG.e(LOG_TAG, "Could get real path for URI string %s", uriString); |
| } |
| } else if (uriString.startsWith("file://")) { |
| realPath = uriString.substring(7); |
| if (realPath.startsWith("/android_asset/")) { |
| LOG.e(LOG_TAG, "Cannot get real path for URI string %s because it is a file:///android_asset/ URI.", uriString); |
| realPath = null; |
| } |
| } else { |
| realPath = uriString; |
| } |
| |
| return realPath; |
| } |
| |
| /** |
| * Returns the real path of the given URI. |
| * If the given URI is a content:// URI, the real path is retrieved from the media store. |
| * |
| * @param uri the URI of the audio/image/video |
| * @param cordova the current application context |
| * @return the full path to the file |
| */ |
| public static String getRealPath(Uri uri, CordovaInterface cordova) { |
| return FileHelper.getRealPath(uri.toString(), cordova); |
| } |
| |
| /** |
| * Returns an input stream based on given URI string. |
| * |
| * @param uriString the URI string from which to obtain the input stream |
| * @param cordova the current application context |
| * @return an input stream into the data at the given URI or null if given an invalid URI string |
| * @throws IOException |
| */ |
| public static InputStream getInputStreamFromUriString(String uriString, CordovaInterface cordova) throws IOException { |
| if (uriString.startsWith("content")) { |
| Uri uri = Uri.parse(uriString); |
| return cordova.getActivity().getContentResolver().openInputStream(uri); |
| } else if (uriString.startsWith("file://")) { |
| int question = uriString.indexOf("?"); |
| if (question > -1) { |
| uriString = uriString.substring(0,question); |
| } |
| if (uriString.startsWith("file:///android_asset/")) { |
| Uri uri = Uri.parse(uriString); |
| String relativePath = uri.getPath().substring(15); |
| return cordova.getActivity().getAssets().open(relativePath); |
| } else { |
| return new FileInputStream(getRealPath(uriString, cordova)); |
| } |
| } else { |
| return new FileInputStream(getRealPath(uriString, cordova)); |
| } |
| } |
| |
| /** |
| * Removes the "file://" prefix from the given URI string, if applicable. |
| * If the given URI string doesn't have a "file://" prefix, it is returned unchanged. |
| * |
| * @param uriString the URI string to operate on |
| * @return a path without the "file://" prefix |
| */ |
| public static String stripFileProtocol(String uriString) { |
| if (uriString.startsWith("file://")) { |
| uriString = uriString.substring(7); |
| } |
| return uriString; |
| } |
| |
| public static String getMimeTypeForExtension(String path) { |
| String extension = path; |
| int lastDot = extension.lastIndexOf('.'); |
| if (lastDot != -1) { |
| extension = extension.substring(lastDot + 1); |
| } |
| // Convert the URI string to lower case to ensure compatibility with MimeTypeMap (see CB-2185). |
| extension = extension.toLowerCase(Locale.getDefault()); |
| if (extension.equals("3ga")) { |
| return "audio/3gpp"; |
| } |
| return MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension); |
| } |
| |
| /** |
| * Returns the mime type of the data specified by the given URI string. |
| * |
| * @param uriString the URI string of the data |
| * @return the mime type of the specified data |
| */ |
| public static String getMimeType(String uriString, CordovaInterface cordova) { |
| String mimeType = null; |
| |
| Uri uri = Uri.parse(uriString); |
| if (uriString.startsWith("content://")) { |
| mimeType = cordova.getActivity().getContentResolver().getType(uri); |
| } else { |
| mimeType = getMimeTypeForExtension(uri.getPath()); |
| } |
| |
| return mimeType; |
| } |
| } |