com.clustercontrol.collect.util.ZipCompresser.java Source code

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Here is the source code for com.clustercontrol.collect.util.ZipCompresser.java

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/*
    
Copyright (C) 2006 NTT DATA Corporation
    
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, version 2.
    
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.
    
 */

package com.clustercontrol.collect.util;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.clustercontrol.fault.HinemosUnknown;

/**
 * ?<BR>
 *
 * @version 4.0.0
 * @since 4.0.0
 */
public class ZipCompresser {

    private static Log m_log = LogFactory.getLog(ZipCompresser.class);

    /**
     * ?????1????
     * 
     * @param inputFileNameList ??
     * @param outputFileName ?
     * 
     * @return ???
     */
    protected static synchronized void archive(ArrayList<String> inputFileNameList, String outputFileName)
            throws HinemosUnknown {
        m_log.debug("archive() output file = " + outputFileName);

        byte[] buf = new byte[128];
        BufferedInputStream in = null;
        ZipEntry entry = null;
        ZipOutputStream out = null;

        // ?
        if (outputFileName == null || "".equals(outputFileName)) {
            HinemosUnknown e = new HinemosUnknown("archive output fileName is null ");
            m_log.info("archive() : " + e.getClass().getSimpleName() + ", " + e.getMessage());
            throw e;
        }
        File zipFile = new File(outputFileName);
        if (zipFile.exists()) {
            if (zipFile.isFile() && zipFile.canWrite()) {
                m_log.debug("archive() output file = " + outputFileName
                        + " is exists & file & writable. initialize file(delete)");
                if (!zipFile.delete())
                    m_log.debug("Fail to delete " + zipFile.getAbsolutePath());
            } else {
                HinemosUnknown e = new HinemosUnknown("archive output fileName is directory or not writable ");
                m_log.info("archive() : " + e.getClass().getSimpleName() + ", " + e.getMessage());
                throw e;
            }
        }

        // ?
        try {
            // ????
            out = new ZipOutputStream(new FileOutputStream(outputFileName));

            for (String inputFileName : inputFileNameList) {
                m_log.debug("archive() input file name = " + inputFileName);

                // ????
                in = new BufferedInputStream(new FileInputStream(inputFileName));

                // ??
                String fileName = (new File(inputFileName)).getName();
                m_log.debug("archive() entry file name = " + fileName);
                entry = new ZipEntry(fileName);

                out.putNextEntry(entry);
                // ????
                int size;
                while ((size = in.read(buf, 0, buf.length)) != -1) {
                    out.write(buf, 0, size);
                }
                // ??
                out.closeEntry();
                in.close();
            }
            // ? out.flush();
            out.close();

        } catch (IOException e) {
            m_log.warn("archive() archive error : " + outputFileName + e.getClass().getSimpleName() + ", "
                    + e.getMessage(), e);
            throw new HinemosUnknown("archive error " + outputFileName, e);

        } finally {

            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                }
            }

            if (out != null) {
                try {
                    out.close();
                } catch (IOException e) {
                }
            }
        }
    }
}