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) 2006-2011 Andreas Kirschbaum.
 */

package com.realtime.crossfire.jxclient.sound;

import com.realtime.crossfire.jxclient.settings.Filenames;
import com.realtime.crossfire.jxclient.util.DebugWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
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(@Nullable final String name, @NotNull final String action) throws IOException {
        @Nullable final IOException savedException;
        if (name == null) {
            savedException = null;
        } else {
            try {
                return getResource(name+"/"+action);
            } catch (final IOException ex) {
                savedException = ex;
            }
        }

        try {
            return getResource(action);
        } catch (final IOException ex) {
            throw savedException == null ? ex : savedException;
        }
    }

    @NotNull
    private InputStream getResource(@NotNull final String name) throws IOException {
        final String resource = "resource/sounds/"+name+".wav";

        @Nullable File localFile;
        try {
            localFile = new File(resource).getCanonicalFile();
        } catch (final IOException ex) {
            if (debugSound != null) {
                debugSound.debugProtocolWrite("resource: ["+resource+"] not found as file:"+resource+" ("+ex.getMessage()+")");
            }
            localFile = null;
        }
        if (localFile != null) {
            try {
                final InputStream inputStream = new FileInputStream(localFile);
                if (debugSound != null) {
                    debugSound.debugProtocolWrite("resource: ["+resource+"] found as file:"+localFile);
                }
                return inputStream;
            } catch (final FileNotFoundException ignored) {
                if (debugSound != null) {
                    debugSound.debugProtocolWrite("resource: ["+resource+"] not found as file:"+localFile);
                }
            }
        }

        final File file = new File(Filenames.getSettingsFile("sounds"), resource);
        try {
            final InputStream inputStream = new FileInputStream(file);
            if (debugSound != null) {
                debugSound.debugProtocolWrite("resource: ["+resource+"] found as file:"+file);
            }
            return inputStream;
        } catch (final FileNotFoundException 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 inputStream;
        }
        if (debugSound != null) {
            debugSound.debugProtocolWrite("resource: ["+resource+"] not found as rsrc:"+resource);
        }

        throw new IOException("resource "+resource+" does not exist");
    }

}