AudioFileLoader.java

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/*
 * This file is part of JXClient, the Fullscreen Java Crossfire Client.
 *
 * JXClient is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * JXClient is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with JXClient; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Copyright (C) 2005-2008 Yann Chachkoff
 * Copyright (C) 2006-2017,2019-2023 Andreas Kirschbaum
 * Copyright (C) 2010-2012,2014-2018,2020-2023 Nicolas Weeger
 */
 
package com.realtime.crossfire.jxclient.sound;
 
import com.realtime.crossfire.jxclient.settings.Filenames;
import com.realtime.crossfire.jxclient.util.DebugWriter;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
 
public class AudioFileLoader {
 
    @Nullable
    private final DebugWriter debugSound;
 
    public AudioFileLoader(@Nullable final DebugWriter debugSound) {
        this.debugSound = debugSound;
    }
 
    @NotNull
    public InputStream getInputStream(@NotNull final CharSequence name) throws IOException {
        final StringBuilder sb = new StringBuilder("resource/sounds/");
        for (int i = 0; i < 64 && i < name.length(); i++) {
            final char ch = name.charAt(i);
            if (('0' <= ch && ch <= '9') || ('a' <= ch && ch <= 'z')) {
                sb.append(ch);
            } else {
                sb.append('_');
            }
        }
        sb.append(".mp3");
        final String resource = sb.toString();
 
        final Path localFile = Paths.get(resource).toAbsolutePath().normalize();
        try {
            final InputStream inputStream = Files.newInputStream(localFile);
            if (debugSound != null) {
                debugSound.debugProtocolWrite("resource: ["+resource+"] found as file:"+localFile);
            }
            return new BufferedInputStream(inputStream);
        } catch (final NoSuchFileException ignored) {
            if (debugSound != null) {
                debugSound.debugProtocolWrite("resource: ["+resource+"] not found as file:"+localFile);
            }
        }
 
        final Path file = Filenames.getSettingsFile("sounds").resolve(resource);
        try {
            final InputStream inputStream = Files.newInputStream(file);
            if (debugSound != null) {
                debugSound.debugProtocolWrite("resource: ["+resource+"] found as file:"+file);
            }
            return new BufferedInputStream(inputStream);
        } catch (final NoSuchFileException ignored) {
            if (debugSound != null) {
                debugSound.debugProtocolWrite("resource: ["+resource+"] not found as file:"+file);
            }
        }
 
        final InputStream inputStream = AudioFileLoader.class.getClassLoader().getResourceAsStream(resource);
        if (inputStream != null) {
            if (debugSound != null) {
                debugSound.debugProtocolWrite("resource: ["+resource+"] found as rsrc:"+resource);
            }
            return new BufferedInputStream(inputStream);
        }
        if (debugSound != null) {
            debugSound.debugProtocolWrite("resource: ["+resource+"] not found as rsrc:"+resource);
        }
 
        throw new IOException("resource "+resource+" does not exist");
    }
 
}