Mon 21 Jul 22:43:21 CEST 2025
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/*
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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*/
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package org.apache.cordova.file;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.database.Cursor;
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import android.net.Uri;
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import android.provider.DocumentsContract;
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import android.provider.MediaStore;
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import android.provider.OpenableColumns;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import org.apache.cordova.CordovaResourceApi;
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import org.json.JSONException;
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import org.json.JSONObject;
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public class ContentFilesystem extends Filesystem {
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private final Context context;
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public ContentFilesystem(Context context, CordovaResourceApi resourceApi) {
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super(Uri.parse("content://"), "content", resourceApi);
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this.context = context;
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}
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@Override
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public Uri toNativeUri(LocalFilesystemURL inputURL) {
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String authorityAndPath = inputURL.uri.getEncodedPath().substring(this.name.length() + 2);
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if (authorityAndPath.length() < 2) {
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return null;
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}
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String ret = "content://" + authorityAndPath;
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String query = inputURL.uri.getEncodedQuery();
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if (query != null) {
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ret += '?' + query;
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}
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String frag = inputURL.uri.getEncodedFragment();
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if (frag != null) {
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ret += '#' + frag;
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}
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return Uri.parse(ret);
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}
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@Override
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public LocalFilesystemURL toLocalUri(Uri inputURL) {
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if (!"content".equals(inputURL.getScheme())) {
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return null;
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}
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String subPath = inputURL.getEncodedPath();
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if (subPath.length() > 0) {
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subPath = subPath.substring(1);
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}
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Uri.Builder b = new Uri.Builder()
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.scheme(LocalFilesystemURL.FILESYSTEM_PROTOCOL)
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.authority("localhost")
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.path(name)
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.appendPath(inputURL.getAuthority());
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if (subPath.length() > 0) {
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b.appendEncodedPath(subPath);
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}
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Uri localUri = b.encodedQuery(inputURL.getEncodedQuery())
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.encodedFragment(inputURL.getEncodedFragment())
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.build();
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return LocalFilesystemURL.parse(localUri);
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}
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@Override
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public JSONObject getFileForLocalURL(LocalFilesystemURL inputURL,
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String fileName, JSONObject options, boolean directory) throws IOException, TypeMismatchException, JSONException {
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throw new UnsupportedOperationException("getFile() not supported for content:. Use resolveLocalFileSystemURL instead.");
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}
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@Override
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public boolean removeFileAtLocalURL(LocalFilesystemURL inputURL)
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throws NoModificationAllowedException {
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Uri contentUri = toNativeUri(inputURL);
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try {
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context.getContentResolver().delete(contentUri, null, null);
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} catch (UnsupportedOperationException t) {
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// Was seeing this on the File mobile-spec tests on 4.0.3 x86 emulator.
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// The ContentResolver applies only when the file was registered in the
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// first case, which is generally only the case with images.
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throw new NoModificationAllowedException("Deleting not supported for content uri: " + contentUri);
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}
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return true;
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}
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@Override
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public boolean recursiveRemoveFileAtLocalURL(LocalFilesystemURL inputURL)
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throws NoModificationAllowedException {
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throw new NoModificationAllowedException("Cannot remove content url");
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}
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@Override
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public LocalFilesystemURL[] listChildren(LocalFilesystemURL inputURL) throws FileNotFoundException {
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throw new UnsupportedOperationException("readEntriesAtLocalURL() not supported for content:. Use resolveLocalFileSystemURL instead.");
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}
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@Override
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public JSONObject getFileMetadataForLocalURL(LocalFilesystemURL inputURL) throws FileNotFoundException {
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long size = -1;
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long lastModified = 0;
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Uri nativeUri = toNativeUri(inputURL);
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String mimeType = resourceApi.getMimeType(nativeUri);
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Cursor cursor = openCursorForURL(nativeUri);
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try {
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if (cursor != null && cursor.moveToFirst()) {
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size = resourceSizeForCursor(cursor);
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Long modified = lastModifiedDateForCursor(cursor);
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if (modified != null)
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lastModified = modified.longValue();
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} else {
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// Some content providers don't support cursors at all!
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CordovaResourceApi.OpenForReadResult offr = resourceApi.openForRead(nativeUri);
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size = offr.length;
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}
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} catch (IOException e) {
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throw new FileNotFoundException();
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} finally {
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if (cursor != null)
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cursor.close();
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}
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JSONObject metadata = new JSONObject();
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try {
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metadata.put("size", size);
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metadata.put("type", mimeType);
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metadata.put("name", name);
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metadata.put("fullPath", inputURL.path);
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metadata.put("lastModifiedDate", lastModified);
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} catch (JSONException e) {
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return null;
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}
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return metadata;
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}
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@Override
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public long writeToFileAtURL(LocalFilesystemURL inputURL, String data,
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int offset, boolean isBinary) throws NoModificationAllowedException {
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throw new NoModificationAllowedException("Couldn't write to file given its content URI");
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}
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@Override
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public long truncateFileAtURL(LocalFilesystemURL inputURL, long size)
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throws NoModificationAllowedException {
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throw new NoModificationAllowedException("Couldn't truncate file given its content URI");
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}
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protected Cursor openCursorForURL(Uri nativeUri) {
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ContentResolver contentResolver = context.getContentResolver();
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try {
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return contentResolver.query(nativeUri, null, null, null, null);
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} catch (UnsupportedOperationException e) {
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return null;
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}
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}
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private Long resourceSizeForCursor(Cursor cursor) {
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int columnIndex = cursor.getColumnIndex(OpenableColumns.SIZE);
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if (columnIndex != -1) {
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String sizeStr = cursor.getString(columnIndex);
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if (sizeStr != null) {
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return Long.parseLong(sizeStr);
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}
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}
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return null;
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}
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protected Long lastModifiedDateForCursor(Cursor cursor) {
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int columnIndex = cursor.getColumnIndex(MediaStore.MediaColumns.DATE_MODIFIED);
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if (columnIndex == -1) {
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columnIndex = cursor.getColumnIndex(DocumentsContract.Document.COLUMN_LAST_MODIFIED);
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}
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if (columnIndex != -1) {
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String dateStr = cursor.getString(columnIndex);
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if (dateStr != null) {
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return Long.parseLong(dateStr);
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}
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}
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return null;
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}
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@Override
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public String filesystemPathForURL(LocalFilesystemURL url) {
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File f = resourceApi.mapUriToFile(toNativeUri(url));
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return f == null ? null : f.getAbsolutePath();
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}
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@Override
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public LocalFilesystemURL URLforFilesystemPath(String path) {
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// Returns null as we don't support reverse mapping back to content:// URLs
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return null;
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}
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@Override
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public boolean canRemoveFileAtLocalURL(LocalFilesystemURL inputURL) {
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return true;
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}
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}
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