org.getspout.spout.packet.PacketCacheFile.java Source code

Introduction

Here is the source code for org.getspout.spout.packet.PacketCacheFile.java

Source

/*
 * This file is part of Spoutcraft (http://wiki.getspout.org/).
 * 
 * Spoutcraft is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Spoutcraft 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.getspout.spout.packet;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;

import net.minecraft.src.*;
import net.minecraft.client.Minecraft;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.output.ByteArrayOutputStream;
import org.getspout.spout.client.SpoutClient;
import org.getspout.spout.io.CRCManager;
import org.getspout.spout.io.CustomTextureManager;
import org.getspout.spout.io.FileUtil;
import org.spoutcraft.spoutcraftapi.packet.PacketUtil;

public class PacketCacheFile implements CompressablePacket {
    private String plugin;
    private byte[] fileData;
    private String fileName;
    private boolean compressed = false;

    public PacketCacheFile() {

    }

    public PacketCacheFile(String plugin, File file) {
        this.plugin = plugin;
        try {
            this.fileData = FileUtils.readFileToByteArray(file);
        } catch (IOException e) {
            e.printStackTrace();
        }
        this.fileName = FileUtil.getFileName(file.getPath());
    }

    //TODO move to separate thread?
    public void compress() {
        if (!compressed) {
            Deflater deflater = new Deflater();
            deflater.setInput(fileData);
            deflater.setLevel(Deflater.BEST_COMPRESSION);
            deflater.finish();
            ByteArrayOutputStream bos = new ByteArrayOutputStream(fileData.length);
            byte[] buffer = new byte[1024];
            while (!deflater.finished()) {
                int bytesCompressed = deflater.deflate(buffer);
                bos.write(buffer, 0, bytesCompressed);
            }
            try {
                bos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            fileData = bos.toByteArray();
            compressed = true;
        }
    }

    public boolean isCompressed() {
        return compressed;
    }

    public void decompress() {
        if (compressed) {
            Inflater decompressor = new Inflater();
            decompressor.setInput(fileData);

            ByteArrayOutputStream bos = new ByteArrayOutputStream(fileData.length);

            byte[] buf = new byte[1024];
            while (!decompressor.finished()) {
                try {
                    int count = decompressor.inflate(buf);
                    bos.write(buf, 0, count);
                } catch (DataFormatException e) {

                }
            }
            try {
                bos.close();
            } catch (IOException e) {

            }

            fileData = bos.toByteArray();
        }
    }

    public int getNumBytes() {
        return PacketUtil.getNumBytes(fileName) + PacketUtil.getNumBytes(plugin) + fileData.length + 4;
    }

    public void readData(DataInputStream input) throws IOException {
        this.fileName = PacketUtil.readString(input);
        this.plugin = PacketUtil.readString(input);
        compressed = input.readBoolean();
        int size = input.readInt();
        this.fileData = new byte[size];
        input.readFully(this.fileData);
    }

    public void writeData(DataOutputStream output) throws IOException {
        PacketUtil.writeString(output, fileName);
        PacketUtil.writeString(output, plugin);
        output.writeBoolean(compressed);
        output.writeInt(fileData.length);
        output.write(fileData);
    }

    public void run(int playerId) {
        this.fileName = FileUtil.getFileName(this.fileName);
        if (!FileUtil.canCache(fileName)) {
            System.out.println("WARNING, " + plugin + " tried to cache an invalid file type: " + fileName);
            return;
        }
        File directory = new File(FileUtil.getCacheDirectory(), plugin);
        if (!directory.exists()) {
            directory.mkdir();
        }
        File cache = new File(directory, fileName);
        try {
            FileUtils.writeByteArrayToFile(cache, fileData);
        } catch (IOException e) {
            e.printStackTrace();
        }
        long expectedCRC = CRCManager.getCRC(fileName);
        long calculatedCRC = FileUtil.getCRC(cache, new byte[16384]);
        if (expectedCRC != calculatedCRC) {
            System.out.println("WARNING, Downloaded File " + fileName + "'s CRC " + calculatedCRC
                    + " did not match the expected CRC: " + expectedCRC);
            SpoutClient.getInstance().getPacketManager()
                    .sendSpoutPacket(new PacketPreCacheFile(plugin, fileName, expectedCRC, false));
            System.out.println("Requesting re-downloaded of File " + fileName);
        } else if (cache.exists() && FileUtil.isImageFile(fileName)) {
            CustomTextureManager.getTextureFromUrl(plugin, fileName);
        }
        ((EntityClientPlayerMP) Minecraft.theMinecraft.thePlayer).sendQueue.addToSendQueue(new Packet0KeepAlive());
    }

    public void failure(int playerId) {
        // TODO Auto-generated method stub

    }

    public PacketType getPacketType() {
        return PacketType.PacketCacheFile;
    }

    public int getVersion() {
        return 1;
    }

}