/front/plugins/cordova-plugin-file/src/android/ContentFilesystem.java
Java | 216 lines | 174 code | 19 blank | 23 comment | 27 complexity | abfc571c363e5f8fdebe65d6f5e6e9bf MD5 | raw file
- /*
- 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.content.ContentResolver;
- import android.content.Context;
- import android.database.Cursor;
- import android.net.Uri;
- import android.provider.DocumentsContract;
- import android.provider.MediaStore;
- import android.provider.OpenableColumns;
- import java.io.File;
- import java.io.FileNotFoundException;
- import java.io.IOException;
- import org.apache.cordova.CordovaResourceApi;
- import org.json.JSONException;
- import org.json.JSONObject;
- public class ContentFilesystem extends Filesystem {
- private final Context context;
- public ContentFilesystem(Context context, CordovaResourceApi resourceApi) {
- super(Uri.parse("content://"), "content", resourceApi);
- this.context = context;
- }
- @Override
- public Uri toNativeUri(LocalFilesystemURL inputURL) {
- String authorityAndPath = inputURL.uri.getEncodedPath().substring(this.name.length() + 2);
- if (authorityAndPath.length() < 2) {
- return null;
- }
- String ret = "content://" + authorityAndPath;
- String query = inputURL.uri.getEncodedQuery();
- if (query != null) {
- ret += '?' + query;
- }
- String frag = inputURL.uri.getEncodedFragment();
- if (frag != null) {
- ret += '#' + frag;
- }
- return Uri.parse(ret);
- }
- @Override
- public LocalFilesystemURL toLocalUri(Uri inputURL) {
- if (!"content".equals(inputURL.getScheme())) {
- return null;
- }
- String subPath = inputURL.getEncodedPath();
- if (subPath.length() > 0) {
- subPath = subPath.substring(1);
- }
- Uri.Builder b = new Uri.Builder()
- .scheme(LocalFilesystemURL.FILESYSTEM_PROTOCOL)
- .authority("localhost")
- .path(name)
- .appendPath(inputURL.getAuthority());
- if (subPath.length() > 0) {
- b.appendEncodedPath(subPath);
- }
- Uri localUri = b.encodedQuery(inputURL.getEncodedQuery())
- .encodedFragment(inputURL.getEncodedFragment())
- .build();
- return LocalFilesystemURL.parse(localUri);
- }
- @Override
- public JSONObject getFileForLocalURL(LocalFilesystemURL inputURL,
- String fileName, JSONObject options, boolean directory) throws IOException, TypeMismatchException, JSONException {
- throw new UnsupportedOperationException("getFile() not supported for content:. Use resolveLocalFileSystemURL instead.");
- }
- @Override
- public boolean removeFileAtLocalURL(LocalFilesystemURL inputURL)
- throws NoModificationAllowedException {
- Uri contentUri = toNativeUri(inputURL);
- try {
- context.getContentResolver().delete(contentUri, null, null);
- } catch (UnsupportedOperationException t) {
- // Was seeing this on the File mobile-spec tests on 4.0.3 x86 emulator.
- // The ContentResolver applies only when the file was registered in the
- // first case, which is generally only the case with images.
- throw new NoModificationAllowedException("Deleting not supported for content uri: " + contentUri);
- }
- return true;
- }
- @Override
- public boolean recursiveRemoveFileAtLocalURL(LocalFilesystemURL inputURL)
- throws NoModificationAllowedException {
- throw new NoModificationAllowedException("Cannot remove content url");
- }
- @Override
- public LocalFilesystemURL[] listChildren(LocalFilesystemURL inputURL) throws FileNotFoundException {
- throw new UnsupportedOperationException("readEntriesAtLocalURL() not supported for content:. Use resolveLocalFileSystemURL instead.");
- }
- @Override
- public JSONObject getFileMetadataForLocalURL(LocalFilesystemURL inputURL) throws FileNotFoundException {
- long size = -1;
- long lastModified = 0;
- Uri nativeUri = toNativeUri(inputURL);
- String mimeType = resourceApi.getMimeType(nativeUri);
- Cursor cursor = openCursorForURL(nativeUri);
- try {
- if (cursor != null && cursor.moveToFirst()) {
- size = resourceSizeForCursor(cursor);
- Long modified = lastModifiedDateForCursor(cursor);
- if (modified != null)
- lastModified = modified.longValue();
- } else {
- // Some content providers don't support cursors at all!
- CordovaResourceApi.OpenForReadResult offr = resourceApi.openForRead(nativeUri);
- size = offr.length;
- }
- } catch (IOException e) {
- throw new FileNotFoundException();
- } finally {
- if (cursor != null)
- cursor.close();
- }
- JSONObject metadata = new JSONObject();
- try {
- metadata.put("size", size);
- metadata.put("type", mimeType);
- metadata.put("name", name);
- metadata.put("fullPath", inputURL.path);
- metadata.put("lastModifiedDate", lastModified);
- } catch (JSONException e) {
- return null;
- }
- return metadata;
- }
- @Override
- public long writeToFileAtURL(LocalFilesystemURL inputURL, String data,
- int offset, boolean isBinary) throws NoModificationAllowedException {
- throw new NoModificationAllowedException("Couldn't write to file given its content URI");
- }
- @Override
- public long truncateFileAtURL(LocalFilesystemURL inputURL, long size)
- throws NoModificationAllowedException {
- throw new NoModificationAllowedException("Couldn't truncate file given its content URI");
- }
- protected Cursor openCursorForURL(Uri nativeUri) {
- ContentResolver contentResolver = context.getContentResolver();
- try {
- return contentResolver.query(nativeUri, null, null, null, null);
- } catch (UnsupportedOperationException e) {
- return null;
- }
- }
- private Long resourceSizeForCursor(Cursor cursor) {
- int columnIndex = cursor.getColumnIndex(OpenableColumns.SIZE);
- if (columnIndex != -1) {
- String sizeStr = cursor.getString(columnIndex);
- if (sizeStr != null) {
- return Long.parseLong(sizeStr);
- }
- }
- return null;
- }
-
- protected Long lastModifiedDateForCursor(Cursor cursor) {
- int columnIndex = cursor.getColumnIndex(MediaStore.MediaColumns.DATE_MODIFIED);
- if (columnIndex == -1) {
- columnIndex = cursor.getColumnIndex(DocumentsContract.Document.COLUMN_LAST_MODIFIED);
- }
- if (columnIndex != -1) {
- String dateStr = cursor.getString(columnIndex);
- if (dateStr != null) {
- return Long.parseLong(dateStr);
- }
- }
- return null;
- }
- @Override
- public String filesystemPathForURL(LocalFilesystemURL url) {
- File f = resourceApi.mapUriToFile(toNativeUri(url));
- return f == null ? null : f.getAbsolutePath();
- }
- @Override
- public LocalFilesystemURL URLforFilesystemPath(String path) {
- // Returns null as we don't support reverse mapping back to content:// URLs
- return null;
- }
- @Override
- public boolean canRemoveFileAtLocalURL(LocalFilesystemURL inputURL) {
- return true;
- }
- }