deodex.tools.ZipTools.java Source code

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Here is the source code for deodex.tools.ZipTools.java

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/*
 *  Lordroid One Deodexer To Rule Them All
 * 
 *  Copyright 2016 Rachid Boudjelida <rachidboudjelida@gmail.com>
 * 
 *  This program 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package deodex.tools;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Enumeration;
import java.util.List;
import java.util.zip.ZipEntry;

import org.apache.commons.compress.compressors.xz.XZCompressorInputStream;

import deodex.S;
import net.lingala.zip4j.core.ZipFile;
import net.lingala.zip4j.model.FileHeader;

public class ZipTools {

    /**
     * extract an odex file from .xz file
     * 
     * @returns success only if an odex file was extracted
     * @param odex
     *            the odex file to decompress
     * @throws IOException
     *             well we are using IOs Exception might be thrown
     */
    public static boolean extractOdex(File odex) throws IOException {
        File Decomdex;
        if (odex.getName().endsWith(S.ODEX_EXT)) {
            Logger.appendLog("[ZipTools][I]Decompressing  " + odex.getName() + " not needed");
            return true;
        } else if (odex.getName().endsWith(S.COMP_GZ_ODEX_EXT)) {
            Logger.appendLog("[ZipTools][I]Decompressing  " + odex.getName() + " gzip detected ...");
            return TarGzUtils.unGzipOdex(odex, odex.getParentFile());
        } else {
            Logger.appendLog("[ZipTools][I]Decompressing  " + odex.getName() + " xz compression detected ...");
            Decomdex = new File(odex.getParentFile().getAbsolutePath() + "/"
                    + StringUtils.getCropString(odex.getName(), odex.getName().length() - 3));
            Logger.appendLog("[ZipTools][I]Decompressing  " + odex.getAbsolutePath() + "  to  "
                    + Decomdex.getAbsolutePath());
            FileInputStream fin = new FileInputStream(odex);
            BufferedInputStream in = new BufferedInputStream(fin);
            FileOutputStream out = new FileOutputStream(Decomdex);
            XZCompressorInputStream xzIn = new XZCompressorInputStream(in);
            final byte[] buffer = new byte[32768];
            int n = 0;
            while (-1 != (n = xzIn.read(buffer))) {
                out.write(buffer, 0, n);
            }
            out.close();
            xzIn.close();

        }
        Logger.appendLog("[ZipTools][I]Decompressing  " + odex.getAbsolutePath() + "  to  "
                + Decomdex.getAbsolutePath() + " success ? " + Decomdex.exists());
        return Decomdex.exists();
    }

    /**
     * search a filename is a zip file
     * 
     * @param fileName
     * @param zipFile
     * @return returns true is a file with the same name is in the zip file !
     */
    public static boolean isFileinZip(String fileName, ZipFile zipFile) {
        try {
            Logger.appendLog(
                    "[ZipTools][I] about to search " + fileName + " in " + zipFile.getFile().getAbsolutePath());
            // Get the list of file headers from the zip file
            @SuppressWarnings("rawtypes")
            List fileHeaderList = zipFile.getFileHeaders();

            // Loop through the file headers
            // TODO why some zips throw OutOfBoundsException ? weird zips ?

            for (int i = 0; i < fileHeaderList.size(); i++) {
                FileHeader fileHeader = (FileHeader) fileHeaderList.get(i);
                String name = fileHeader.getFileName();

                if (name.length() >= fileName.length())
                    if (name.contains(fileName)) {
                        return true;
                    }

            }

        } catch (Exception e) {
            //e.printStackTrace(); don't print the Exception can be a throwable and doesn't have sush method 
            Logger.appendLog("[ZipTools][EX] isFileInZip fail trying fail safe mode instead ");
            File zip = zipFile.getFile();
            try {
                return ZipTools.isFileinZipFailSafe(fileName, new java.util.zip.ZipFile(zip));
            } catch (IOException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
        }
        return false;
    }

    /**
     * check if the given fileName matches a file in the given zipFile
     * without extraction ,file name can contain full paths in zip like
     * '/path/myFile.txt 
     * @param fileName file name to search fot
     * @param zipFile the zip in which we will search for the file 
     * @return isFileFound returns true is a file matches the given file 
     */
    public static boolean isFileinZipFailSafe(String fileName, java.util.zip.ZipFile zipFile) {
        try {

            Enumeration<? extends ZipEntry> zipEntries = zipFile.entries();

            while (zipEntries.hasMoreElements()) {

                if (zipEntries.nextElement().getName().contains(fileName)) {
                    return true;
                }
            }

        } catch (Exception e) {
            Logger.appendLog("[ZipTools][EX]" + e.getStackTrace());
            return false;
        }
        return false;
    }
}