703 lines
26 KiB
Java
703 lines
26 KiB
Java
/*
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This file is part of Subsonic.
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Subsonic is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Subsonic is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2009 (C) Sindre Mehus
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*/
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package net.nullsum.audinaut.util;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.os.Build;
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import android.os.Environment;
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import android.support.v4.content.ContextCompat;
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import android.util.Log;
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import com.esotericsoftware.kryo.Kryo;
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import com.esotericsoftware.kryo.io.Input;
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import com.esotericsoftware.kryo.io.Output;
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import net.nullsum.audinaut.domain.Artist;
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import net.nullsum.audinaut.domain.Genre;
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import net.nullsum.audinaut.domain.Indexes;
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import net.nullsum.audinaut.domain.MusicDirectory;
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import net.nullsum.audinaut.domain.MusicFolder;
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import net.nullsum.audinaut.domain.Playlist;
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import net.nullsum.audinaut.service.MediaStoreService;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.RandomAccessFile;
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import java.io.Serializable;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.List;
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import java.util.SortedSet;
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import java.util.TreeSet;
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import java.util.zip.DeflaterOutputStream;
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import java.util.zip.InflaterInputStream;
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/**
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* @author Sindre Mehus
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*/
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public class FileUtil {
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private static final String TAG = FileUtil.class.getSimpleName();
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private static final String[] FILE_SYSTEM_UNSAFE = {"/", "\\", "..", ":", "\"", "?", "*", "<", ">", "|"};
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private static final String[] FILE_SYSTEM_UNSAFE_DIR = {"\\", "..", ":", "\"", "?", "*", "<", ">", "|"};
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private static final List<String> MUSIC_FILE_EXTENSIONS = Arrays.asList("mp3", "ogg", "aac", "flac", "m4a", "wav", "wma");
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private static final List<String> PLAYLIST_FILE_EXTENSIONS = Collections.singletonList("m3u");
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private static final int MAX_FILENAME_LENGTH = 254 - ".complete.mp3".length();
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private static final Kryo kryo = new Kryo();
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private static File DEFAULT_MUSIC_DIR;
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private static HashMap<String, MusicDirectory.Entry> entryLookup;
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static {
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kryo.register(MusicDirectory.Entry.class);
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kryo.register(Indexes.class);
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kryo.register(Artist.class);
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kryo.register(MusicFolder.class);
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kryo.register(Playlist.class);
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kryo.register(Genre.class);
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}
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public static File getEntryFile(Context context, MusicDirectory.Entry entry) {
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if (entry.isDirectory()) {
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return getAlbumDirectory(context, entry);
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} else {
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return getSongFile(context, entry);
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}
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}
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public static File getSongFile(Context context, MusicDirectory.Entry song) {
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File dir = getAlbumDirectory(context, song);
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StringBuilder fileName = new StringBuilder();
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Integer track = song.getTrack();
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if (track != null) {
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if (track < 10) {
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fileName.append("0");
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}
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fileName.append(track).append("-");
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}
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fileName.append(fileSystemSafe(song.getTitle()));
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if (fileName.length() >= MAX_FILENAME_LENGTH) {
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fileName.setLength(MAX_FILENAME_LENGTH);
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}
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fileName.append(".");
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if (song.getTranscodedSuffix() != null) {
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fileName.append(song.getTranscodedSuffix());
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} else {
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fileName.append(song.getSuffix());
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}
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return new File(dir, fileName.toString());
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}
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public static File getPlaylistFile(Context context, String server, String name) {
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File playlistDir = getPlaylistDirectory(context, server);
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return new File(playlistDir, fileSystemSafe(name) + ".m3u");
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}
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public static void writePlaylistFile(Context context, File file, MusicDirectory playlist) throws IOException {
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FileWriter fw = new FileWriter(file);
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BufferedWriter bw = new BufferedWriter(fw);
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try {
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fw.write("#EXTM3U\n");
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for (MusicDirectory.Entry e : playlist.getChildren()) {
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String filePath = FileUtil.getSongFile(context, e).getAbsolutePath();
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if (!new File(filePath).exists()) {
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String ext = FileUtil.getExtension(filePath);
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String base = FileUtil.getBaseName(filePath);
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filePath = base + ".complete." + ext;
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}
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fw.write(filePath + "\n");
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}
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} catch (Exception e) {
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Log.w(TAG, "Failed to save playlist: " + playlist.getName());
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} finally {
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bw.close();
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fw.close();
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}
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}
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public static File getPlaylistDirectory(Context context) {
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File playlistDir = new File(getSubsonicDirectory(context), "playlists");
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ensureDirectoryExistsAndIsReadWritable(playlistDir);
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return playlistDir;
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}
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public static File getPlaylistDirectory(Context context, String server) {
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File playlistDir = new File(getPlaylistDirectory(context), server);
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ensureDirectoryExistsAndIsReadWritable(playlistDir);
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return playlistDir;
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}
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public static File getAlbumArtFile(Context context, MusicDirectory.Entry entry) {
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if (entry.getId().contains(ImageLoader.PLAYLIST_PREFIX)) {
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File dir = getAlbumArtDirectory(context);
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return new File(dir, Util.md5Hex(ImageLoader.PLAYLIST_PREFIX + entry.getTitle()) + ".jpeg");
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} else {
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File albumDir = getAlbumDirectory(context, entry);
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File artFile;
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File albumFile = getAlbumArtFile(albumDir);
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File hexFile = getHexAlbumArtFile(context, albumDir);
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if (albumDir.exists()) {
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if (hexFile.exists()) {
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hexFile.renameTo(albumFile);
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}
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artFile = albumFile;
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} else {
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artFile = hexFile;
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}
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return artFile;
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}
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}
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private static File getAlbumArtFile(File albumDir) {
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return new File(albumDir, Constants.ALBUM_ART_FILE);
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}
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private static File getHexAlbumArtFile(Context context, File albumDir) {
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return new File(getAlbumArtDirectory(context), Util.md5Hex(albumDir.getPath()) + ".jpeg");
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}
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public static Bitmap getAlbumArtBitmap(Context context, MusicDirectory.Entry entry, int size) {
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File albumArtFile = getAlbumArtFile(context, entry);
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if (albumArtFile.exists()) {
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final BitmapFactory.Options opt = new BitmapFactory.Options();
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opt.inJustDecodeBounds = true;
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BitmapFactory.decodeFile(albumArtFile.getPath(), opt);
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opt.inPurgeable = true;
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opt.inSampleSize = Util.calculateInSampleSize(opt, size, Util.getScaledHeight(opt.outHeight, opt.outWidth, size));
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opt.inJustDecodeBounds = false;
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Bitmap bitmap = BitmapFactory.decodeFile(albumArtFile.getPath(), opt);
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return bitmap == null ? null : getScaledBitmap(bitmap, size);
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}
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return null;
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}
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public static Bitmap getSampledBitmap(byte[] bytes, int size) {
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final BitmapFactory.Options opt = new BitmapFactory.Options();
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opt.inJustDecodeBounds = true;
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BitmapFactory.decodeByteArray(bytes, 0, bytes.length, opt);
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opt.inPurgeable = true;
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opt.inSampleSize = Util.calculateInSampleSize(opt, size, Util.getScaledHeight(opt.outHeight, opt.outWidth, size));
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opt.inJustDecodeBounds = false;
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Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length, opt);
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if (bitmap == null) {
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return null;
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} else {
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return getScaledBitmap(bitmap, size);
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}
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}
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private static Bitmap getScaledBitmap(Bitmap bitmap, int size) {
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// Don't waste time scaling if the difference is minor
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// Large album arts still need to be scaled since displayed as is on now playing!
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if (size < 400 && bitmap.getWidth() < (size * 1.1)) {
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return bitmap;
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} else {
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return Bitmap.createScaledBitmap(bitmap, size, Util.getScaledHeight(bitmap, size), true);
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}
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}
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public static File getAlbumArtDirectory(Context context) {
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File albumArtDir = new File(getSubsonicDirectory(context), "artwork");
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ensureDirectoryExistsAndIsReadWritable(albumArtDir);
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ensureDirectoryExistsAndIsReadWritable(new File(albumArtDir, ".nomedia"));
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return albumArtDir;
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}
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public static File getArtistDirectory(Context context, Artist artist) {
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return new File(getMusicDirectory(context).getPath() + "/" + fileSystemSafe(artist.getName()));
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}
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public static File getArtistDirectory(Context context, MusicDirectory.Entry artist) {
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return new File(getMusicDirectory(context).getPath() + "/" + fileSystemSafe(artist.getTitle()));
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}
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public static File getAlbumDirectory(Context context, MusicDirectory.Entry entry) {
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File dir = null;
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if (entry.getPath() != null) {
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File f = new File(fileSystemSafeDir(entry.getPath()));
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String folder = getMusicDirectory(context).getPath();
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if (entry.isDirectory()) {
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folder += "/" + f.getPath();
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} else if (f.getParent() != null) {
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folder += "/" + f.getParent();
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}
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dir = new File(folder);
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} else {
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MusicDirectory.Entry firstSong;
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if (!Util.isOffline(context)) {
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firstSong = lookupChild(context, entry, false);
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if (firstSong != null) {
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File songFile = FileUtil.getSongFile(context, firstSong);
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dir = songFile.getParentFile();
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}
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}
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if (dir == null) {
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String artist = fileSystemSafe(entry.getArtist());
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String album = fileSystemSafe(entry.getAlbum());
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if ("unnamed".equals(album)) {
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album = fileSystemSafe(entry.getTitle());
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}
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dir = new File(getMusicDirectory(context).getPath() + "/" + artist + "/" + album);
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}
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}
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return dir;
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}
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public static MusicDirectory.Entry lookupChild(Context context, MusicDirectory.Entry entry, boolean allowDir) {
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// Initialize lookupMap if first time called
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String lookupName = Util.getCacheName(context);
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if (entryLookup == null) {
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entryLookup = deserialize(context, lookupName, HashMap.class);
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// Create it if
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if (entryLookup == null) {
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entryLookup = new HashMap<>();
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}
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}
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// Check if this lookup has already been done before
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MusicDirectory.Entry child = entryLookup.get(entry.getId());
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if (child != null) {
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return child;
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}
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// Do a special lookup since 4.7+ doesn't match artist/album to entry.getPath
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String s = Util.getRestUrl(context, null, false) + entry.getId();
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String cacheName = "album-" + s.hashCode() + ".ser";
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MusicDirectory entryDir = FileUtil.deserialize(context, cacheName, MusicDirectory.class);
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if (entryDir != null) {
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List<MusicDirectory.Entry> songs = entryDir.getChildren(allowDir, true);
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if (songs.size() > 0) {
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child = songs.get(0);
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entryLookup.put(entry.getId(), child);
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serialize(context, entryLookup, lookupName);
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return child;
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}
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}
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return null;
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}
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public static void createDirectoryForParent(File file) {
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File dir = file.getParentFile();
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if (!dir.exists()) {
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if (!dir.mkdirs()) {
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Log.e(TAG, "Failed to create directory " + dir);
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}
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}
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}
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public static File getSubsonicDirectory(Context context) {
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return context.getExternalFilesDir(null);
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}
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public static File getDefaultMusicDirectory(Context context) {
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if (DEFAULT_MUSIC_DIR == null) {
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File[] dirs;
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
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dirs = context.getExternalMediaDirs();
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} else {
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dirs = ContextCompat.getExternalFilesDirs(context, null);
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}
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DEFAULT_MUSIC_DIR = new File(getBestDir(dirs), "music");
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if (!DEFAULT_MUSIC_DIR.exists() && !DEFAULT_MUSIC_DIR.mkdirs()) {
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Log.e(TAG, "Failed to create default dir " + DEFAULT_MUSIC_DIR);
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// Some devices seem to have screwed up the new media directory API. Go figure. Try again with standard locations
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
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dirs = ContextCompat.getExternalFilesDirs(context, null);
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DEFAULT_MUSIC_DIR = new File(getBestDir(dirs), "music");
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if (!DEFAULT_MUSIC_DIR.exists() && !DEFAULT_MUSIC_DIR.mkdirs()) {
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Log.e(TAG, "Failed to create default dir " + DEFAULT_MUSIC_DIR);
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} else {
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Log.w(TAG, "Stupid OEM's messed up media dir API added in 5.0");
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}
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}
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}
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}
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return DEFAULT_MUSIC_DIR;
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}
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private static File getBestDir(File[] dirs) {
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// Past 5.0 we can query directly for SD Card
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
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for (File dir : dirs) {
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try {
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if (dir != null && Environment.isExternalStorageRemovable(dir)) {
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return dir;
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}
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} catch (Exception e) {
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Log.e(TAG, "Failed to check if is external", e);
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}
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}
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}
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// Before 5.0, we have to guess. Most of the time the SD card is last
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for (int i = dirs.length - 1; i >= 0; i--) {
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if (dirs[i] != null) {
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return dirs[i];
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}
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}
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// Should be impossible to be reached
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return dirs[0];
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}
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public static File getMusicDirectory(Context context) {
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String path = Util.getPreferences(context).getString(Constants.PREFERENCES_KEY_CACHE_LOCATION, getDefaultMusicDirectory(context).getPath());
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File dir = new File(path);
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return ensureDirectoryExistsAndIsReadWritable(dir) ? dir : getDefaultMusicDirectory(context);
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}
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public static void deleteMusicDirectory(Context context) {
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File musicDirectory = FileUtil.getMusicDirectory(context);
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MediaStoreService mediaStore = new MediaStoreService(context);
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recursiveDelete(musicDirectory, mediaStore);
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}
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public static void deleteSerializedCache(Context context) {
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for (File file : context.getCacheDir().listFiles()) {
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if (file.getName().contains(".ser")) {
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file.delete();
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}
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}
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}
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public static void deleteArtworkCache(Context context) {
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File artDirectory = FileUtil.getAlbumArtDirectory(context);
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recursiveDelete(artDirectory);
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}
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private static void recursiveDelete(File dir) {
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recursiveDelete(dir, null);
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}
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public static boolean recursiveDelete(File dir, MediaStoreService mediaStore) {
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if (dir != null && dir.exists()) {
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File[] list = dir.listFiles();
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if (list != null) {
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for (File file : list) {
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if (file.isDirectory()) {
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if (!recursiveDelete(file, mediaStore)) {
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return false;
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}
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} else if (file.exists()) {
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if (!file.delete()) {
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return false;
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} else if (mediaStore != null) {
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mediaStore.deleteFromMediaStore(file);
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}
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}
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}
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}
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return dir.delete();
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}
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return false;
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}
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public static void deleteEmptyDir(File dir) {
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try {
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File[] children = dir.listFiles();
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if (children == null) {
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return;
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}
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// No songs left in the folder
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if (children.length == 1 && children[0].getPath().equals(FileUtil.getAlbumArtFile(dir).getPath())) {
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Util.delete(children[0]);
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children = dir.listFiles();
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}
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// Delete empty directory
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if (children.length == 0) {
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Util.delete(dir);
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}
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} catch (Exception e) {
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Log.w(TAG, "Error while trying to delete empty dir", e);
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}
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}
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private static boolean ensureDirectoryExistsAndIsReadWritable(File dir) {
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if (dir == null) {
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return false;
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}
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if (dir.exists()) {
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if (!dir.isDirectory()) {
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Log.w(TAG, dir + " exists but is not a directory.");
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return false;
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}
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} else {
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if (dir.mkdirs()) {
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Log.i(TAG, "Created directory " + dir);
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} else {
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Log.w(TAG, "Failed to create directory " + dir);
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return false;
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}
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}
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if (!dir.canRead()) {
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Log.w(TAG, "No read permission for directory " + dir);
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return false;
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}
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if (!dir.canWrite()) {
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Log.w(TAG, "No write permission for directory " + dir);
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return false;
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}
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return true;
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}
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public static boolean verifyCanWrite(File dir) {
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if (ensureDirectoryExistsAndIsReadWritable(dir)) {
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try {
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File tmp = new File(dir, "checkWrite");
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tmp.createNewFile();
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if (tmp.exists()) {
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if (tmp.delete()) {
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return true;
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} else {
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Log.w(TAG, "Failed to delete temp file, retrying");
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// This should never be reached since this is a file Audinaut created!
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Thread.sleep(100L);
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tmp = new File(dir, "checkWrite");
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if (tmp.delete()) {
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return true;
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} else {
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Log.w(TAG, "Failed retry to delete temp file");
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return false;
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}
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}
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} else {
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Log.w(TAG, "Temp file does not actually exist");
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return false;
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}
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|
} catch (Exception e) {
|
|
Log.w(TAG, "Failed to create tmp file", e);
|
|
return false;
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Makes a given filename safe by replacing special characters like slashes ("/" and "\")
|
|
* with dashes ("-").
|
|
*
|
|
* @param filename The filename in question.
|
|
* @return The filename with special characters replaced by hyphens.
|
|
*/
|
|
private static String fileSystemSafe(String filename) {
|
|
if (filename == null || filename.trim().length() == 0) {
|
|
return "unnamed";
|
|
}
|
|
|
|
for (String s : FILE_SYSTEM_UNSAFE) {
|
|
filename = filename.replace(s, "-");
|
|
}
|
|
return filename;
|
|
}
|
|
|
|
/**
|
|
* Makes a given filename safe by replacing special characters like colons (":")
|
|
* with dashes ("-").
|
|
*
|
|
* @param path The path of the directory in question.
|
|
* @return The the directory name with special characters replaced by hyphens.
|
|
*/
|
|
private static String fileSystemSafeDir(String path) {
|
|
if (path == null || path.trim().length() == 0) {
|
|
return "";
|
|
}
|
|
|
|
for (String s : FILE_SYSTEM_UNSAFE_DIR) {
|
|
path = path.replace(s, "-");
|
|
}
|
|
return path;
|
|
}
|
|
|
|
/**
|
|
* Similar to {@link File#listFiles()}, but returns a sorted set.
|
|
* Never returns {@code null}, instead a warning is logged, and an empty set is returned.
|
|
*/
|
|
public static SortedSet<File> listFiles(File dir) {
|
|
File[] files = dir.listFiles();
|
|
if (files == null) {
|
|
Log.w(TAG, "Failed to list children for " + dir.getPath());
|
|
return new TreeSet<>();
|
|
}
|
|
|
|
return new TreeSet<>(Arrays.asList(files));
|
|
}
|
|
|
|
public static SortedSet<File> listMediaFiles(File dir) {
|
|
SortedSet<File> files = listFiles(dir);
|
|
Iterator<File> iterator = files.iterator();
|
|
while (iterator.hasNext()) {
|
|
File file = iterator.next();
|
|
if (!file.isDirectory() && !isMediaFile(file)) {
|
|
iterator.remove();
|
|
}
|
|
}
|
|
return files;
|
|
}
|
|
|
|
private static boolean isMediaFile(File file) {
|
|
String extension = getExtension(file.getName());
|
|
return MUSIC_FILE_EXTENSIONS.contains(extension);
|
|
}
|
|
|
|
public static boolean isPlaylistFile(File file) {
|
|
String extension = getExtension(file.getName());
|
|
return PLAYLIST_FILE_EXTENSIONS.contains(extension);
|
|
}
|
|
|
|
/**
|
|
* Returns the extension (the substring after the last dot) of the given file. The dot
|
|
* is not included in the returned extension.
|
|
*
|
|
* @param name The filename in question.
|
|
* @return The extension, or an empty string if no extension is found.
|
|
*/
|
|
public static String getExtension(String name) {
|
|
int index = name.lastIndexOf('.');
|
|
return index == -1 ? "" : name.substring(index + 1).toLowerCase();
|
|
}
|
|
|
|
/**
|
|
* Returns the base name (the substring before the last dot) of the given file. The dot
|
|
* is not included in the returned basename.
|
|
*
|
|
* @param name The filename in question.
|
|
* @return The base name, or an empty string if no basename is found.
|
|
*/
|
|
public static String getBaseName(String name) {
|
|
int index = name.lastIndexOf('.');
|
|
return index == -1 ? name : name.substring(0, index);
|
|
}
|
|
|
|
public static <T extends Serializable> void serialize(Context context, T obj, String fileName) {
|
|
Output out = null;
|
|
try {
|
|
RandomAccessFile file = new RandomAccessFile(context.getCacheDir() + "/" + fileName, "rw");
|
|
out = new Output(new FileOutputStream(file.getFD()));
|
|
synchronized (kryo) {
|
|
kryo.writeObject(out, obj);
|
|
}
|
|
} catch (Throwable x) {
|
|
Log.w(TAG, "Failed to serialize object to " + fileName);
|
|
} finally {
|
|
Util.close(out);
|
|
}
|
|
}
|
|
|
|
public static <T extends Serializable> T deserialize(Context context, String fileName, Class<T> tClass) {
|
|
Input in = null;
|
|
try {
|
|
File file = new File(context.getCacheDir(), fileName);
|
|
if (!file.exists()) {
|
|
return null;
|
|
}
|
|
|
|
if (0 != 0) {
|
|
Date fileDate = new Date(file.lastModified());
|
|
// Convert into hours
|
|
long age = (new Date().getTime() - fileDate.getTime()) / 1000 / 3600;
|
|
if (age > 0) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
RandomAccessFile randomFile = new RandomAccessFile(file, "r");
|
|
|
|
in = new Input(new FileInputStream(randomFile.getFD()));
|
|
synchronized (kryo) {
|
|
return kryo.readObject(in, tClass);
|
|
}
|
|
} catch (FileNotFoundException e) {
|
|
// Different error message
|
|
Log.w(TAG, "No serialization for object from " + fileName);
|
|
return null;
|
|
} catch (Throwable x) {
|
|
Log.w(TAG, "Failed to deserialize object from " + fileName);
|
|
return null;
|
|
} finally {
|
|
Util.close(in);
|
|
}
|
|
}
|
|
|
|
public static <T extends Serializable> void serializeCompressed(Context context, T obj, String fileName) {
|
|
Output out = null;
|
|
try {
|
|
RandomAccessFile file = new RandomAccessFile(context.getCacheDir() + "/" + fileName, "rw");
|
|
out = new Output(new DeflaterOutputStream(new FileOutputStream(file.getFD())));
|
|
synchronized (kryo) {
|
|
kryo.writeObject(out, obj);
|
|
}
|
|
} catch (Throwable x) {
|
|
Log.w(TAG, "Failed to serialize compressed object to " + fileName);
|
|
} finally {
|
|
Util.close(out);
|
|
}
|
|
}
|
|
|
|
public static <T extends Serializable> T deserializeCompressed(Context context, String fileName, Class<T> tClass) {
|
|
Input in = null;
|
|
try {
|
|
RandomAccessFile file = new RandomAccessFile(context.getCacheDir() + "/" + fileName, "r");
|
|
|
|
in = new Input(new InflaterInputStream(new FileInputStream(file.getFD())));
|
|
synchronized (kryo) {
|
|
return kryo.readObject(in, tClass);
|
|
}
|
|
} catch (FileNotFoundException e) {
|
|
// Different error message
|
|
Log.w(TAG, "No serialization compressed for object from " + fileName);
|
|
return null;
|
|
} catch (Throwable x) {
|
|
Log.w(TAG, "Failed to deserialize compressed object from " + fileName);
|
|
return null;
|
|
} finally {
|
|
Util.close(in);
|
|
}
|
|
}
|
|
}
|