org.jjdltc.cordova.plugin.zip.decompressZip.java Source code

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Here is the source code for org.jjdltc.cordova.plugin.zip.decompressZip.java

Source

/*
 * The MIT License (MIT)
 * Copyright (c) 2015 Joel De La Torriente - jjdltc - http://www.jjdltc.com/
 * See a full copy of license in the root folder of the project
 */
package org.jjdltc.cordova.plugin.zip;

import org.json.JSONObject;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class decompressZip {

    private String sourceEntry = "";
    private String targetPath = "";
    private final int BUFFER_SIZE = 2048;

    public decompressZip(JSONObject opts) {
        this.sourceEntry = opts.optString("sourceEntry");
        this.targetPath = opts.optString("targetPath");
    }

    public boolean unZip() {
        boolean result = false;
        try {
            result = this.doUnZip(this.targetPath);
        } catch (IOException e) {
            result = false;
        }
        return result;
    }

    /**
     * Extracts a zip file to a given path
     * @param actualTargetPath  Path to un-zip
     * @throws IOException
     */
    public boolean doUnZip(String actualTargetPath) throws IOException {
        File target = new File(actualTargetPath);
        if (!target.exists()) {
            target.mkdir();
        }

        ZipInputStream zipFl = new ZipInputStream(new FileInputStream(this.sourceEntry));
        ZipEntry entry = zipFl.getNextEntry();

        while (entry != null) {
            String filePath = actualTargetPath + File.separator + entry.getName();
            if (entry.isDirectory()) {
                File path = new File(filePath);
                path.mkdir();
            } else {
                extractFile(zipFl, filePath);
            }
            zipFl.closeEntry();
            entry = zipFl.getNextEntry();
        }
        zipFl.close();
        return true;
    }

    /**
     * Extracts a file
     * @param zipIn
     * @param filePath
     * @throws IOException
     */
    private void extractFile(ZipInputStream zipFl, String filePath) throws IOException {
        BufferedOutputStream buffer = new BufferedOutputStream(new FileOutputStream(filePath));
        byte[] bytesIn = new byte[this.BUFFER_SIZE];
        int read = 0;
        while ((read = zipFl.read(bytesIn)) != -1) {
            buffer.write(bytesIn, 0, read);
        }
        buffer.close();
    }
}