com.twemyeez.picklr.InstallManager.java Source code

Introduction

Here is the source code for com.twemyeez.picklr.InstallManager.java

Source

package com.twemyeez.picklr;

import java.awt.*;

import net.minecraft.client.Minecraft;

import org.apache.commons.io.*;

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.*;
import java.net.URL;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

import javax.swing.*;

public class InstallManager {

    /*
     * This downloads and unzips libraries if required
     */
    public static void unzip() {

        // Firstly get the working directory
        String workingDirectory = Minecraft.getMinecraft().mcDataDir.getAbsolutePath();

        // If it ends with a . then remove it
        if (workingDirectory.endsWith(".")) {
            workingDirectory = workingDirectory.substring(0, workingDirectory.length() - 1);
        }

        // If it doesn't end with a / then add it
        if (!workingDirectory.endsWith("/") && !workingDirectory.endsWith("\\")) {
            workingDirectory = workingDirectory + "/";
        }

        // Use a test file to see if libraries installed
        File file = new File(workingDirectory + "mods/mp3spi1.9.5.jar");

        // If the libraries are installed, return
        if (file.exists()) {
            System.out.println("Checking " + file.getAbsolutePath());
            System.out.println("Target file exists, so not downloading API");
            return;
        }

        // Now try to download the libraries
        try {

            String location = "http://www.javazoom.net/mp3spi/sources/mp3spi1.9.5.zip";

            // Define the URL
            URL url = new URL(location);

            // Get the ZipInputStream
            ZipInputStream zipInput = new ZipInputStream(new BufferedInputStream((url).openStream()));

            // Use a temporary ZipEntry as a buffer
            ZipEntry zipFile;

            // While there are more file entries
            while ((zipFile = zipInput.getNextEntry()) != null) {
                // Check if it is one of the file names that we want to copy
                Boolean required = false;
                if (zipFile.getName().indexOf("mp3spi1.9.5.jar") != -1) {
                    required = true;
                }
                if (zipFile.getName().indexOf("jl1.0.1.jar") != -1) {
                    required = true;
                }
                if (zipFile.getName().indexOf("tritonus_share.jar") != -1) {
                    required = true;
                }
                if (zipFile.getName().indexOf("LICENSE.txt") != -1) {
                    required = true;
                }

                // If it is, then we shall now copy it
                if (!zipFile.getName().replace("MpegAudioSPI1.9.5/", "").equals("") && required) {

                    // Get the file location
                    String tempFile = new File(zipFile.getName()).getName();

                    tempFile = tempFile.replace("LICENSE.txt", "MpegAudioLicence.txt");

                    // Initialise the target file
                    File targetFile = (new File(
                            workingDirectory + "mods/" + tempFile.replace("MpegAudioSPI1.9.5/", "")));

                    // Print a debug/alert message
                    System.out.println("Picklr is extracting to " + workingDirectory + "mods/"
                            + tempFile.replace("MpegAudioSPI1.9.5/", ""));

                    // Make parent directories if required
                    targetFile.getParentFile().mkdirs();

                    // If the file does not exist, create it
                    if (!targetFile.exists()) {
                        targetFile.createNewFile();
                    }

                    // Create a buffered output stream to the destination
                    BufferedOutputStream destinationOutput = new BufferedOutputStream(
                            new FileOutputStream(targetFile, false), 2048);

                    // Store the data read
                    int bytesRead;

                    // Data buffer
                    byte dataBuffer[] = new byte[2048];

                    // While there is still data to write
                    while ((bytesRead = zipInput.read(dataBuffer, 0, 2048)) != -1) {
                        // Write it to the output stream
                        destinationOutput.write(dataBuffer, 0, bytesRead);
                    }

                    // Flush the output
                    destinationOutput.flush();

                    // Close the output stream
                    destinationOutput.close();
                }

            }
            // Close the zip input
            zipInput.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

}