de.suse.swamp.util.FileUtils.java Source code

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Here is the source code for de.suse.swamp.util.FileUtils.java

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/*
 * SWAMP Workflow Administration and Management Platform
 *
 * Copyright (c) 2006 Thomas Schmidt <tschmidt [at] suse.de>
 * Copyright (c) 2006 Novell Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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, write to the Free Software Foundation, Inc., 51 Franklin
 * St, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * In addition, as a special exception, Novell Inc. gives permission to link the
 * code of this program with the following applications:
 *
 * - All applications of the Apache Software Foundation
 *
 * and distribute such linked combinations.
 */

package de.suse.swamp.util;

import java.io.*;
import java.util.zip.*;

/**
 * @author tschmidt
 * Helper utils for handling file operations.
 */
public class FileUtils {

    public static org.apache.log4j.Logger log = org.apache.log4j.Logger.getLogger("de.suse.swamp.util.FileUtils");

    private FileUtils() {
    }

    public static void copyFile(File in, File out) throws Exception {
        org.apache.commons.io.FileUtils.copyFile(in, out);
    }

    public static void uncompress(File inputFile, String targetPath) throws Exception {
        uncompress(new FileInputStream(inputFile), targetPath);
    }

    /**
     * Decompress the provided Stream to "targetPath"
     */
    public static void uncompress(InputStream inputFile, String targetPath) throws Exception {
        ZipInputStream zin = new ZipInputStream(new BufferedInputStream(inputFile));
        BufferedOutputStream dest = null;
        ZipEntry entry;
        while ((entry = zin.getNextEntry()) != null) {
            int count;
            byte data[] = new byte[2048];
            // write the files to the disk
            if (entry.isDirectory()) {
                org.apache.commons.io.FileUtils.forceMkdir(new File(targetPath + "/" + entry.getName()));
            } else {
                FileOutputStream fos = new FileOutputStream(targetPath + "/" + entry.getName());
                dest = new BufferedOutputStream(fos, 2048);
                while ((count = zin.read(data, 0, 2048)) != -1) {
                    dest.write(data, 0, count);
                }
                dest.flush();
                dest.close();
            }
        }
    }

    /**
     * Return the text content of a file
     */
    public static String getText(File file) throws Exception {
        if (file != null && file.exists() && file.canRead()) {
            byte[] b = new byte[(int) file.length()];
            log.debug("Getting text from file: " + file);
            FileInputStream filestream = null;
            filestream = new FileInputStream(file);
            filestream.read(b);
            filestream.close();
            return new String(b);
        } else {
            throw new Exception("Could not read from file: " + file.getAbsolutePath());
        }
    }

}