com.jaspersoft.jasperserver.export.io.ZipOutput.java Source code

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Here is the source code for com.jaspersoft.jasperserver.export.io.ZipOutput.java

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/*
 * Copyright (C) 2005 - 2014 TIBCO Software Inc. All rights reserved.
 * http://www.jaspersoft.com.
 *
 * Unless you have purchased  a commercial license agreement from Jaspersoft,
 * the following license terms  apply:
 *
 * This program is free software: you can redistribute it and/or  modify
 * it under the terms of the GNU Affero 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 Affero  General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public  License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package com.jaspersoft.jasperserver.export.io;

import com.jaspersoft.jasperserver.api.JSExceptionWrapper;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.io.*;
import java.util.HashSet;
import java.util.Properties;
import java.util.Set;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

/**
 * @author Lucian Chirita (lucianc@users.sourceforge.net)
 * @version $Id: ZipOutput.java 19925 2010-12-11 15:06:41Z tmatyashovsky $
 */
public abstract class ZipOutput extends BaseExportOutput {

    private static final Log log = LogFactory.getLog(ZipOutput.class);

    protected static final String ZIP_ENTRY_DIR_SUFFIX = "/";

    private final int level;
    private final PathProcessor pathProcessor;

    protected Set directories;

    protected class EntryOutputStream extends OutputStream {
        public void close() throws IOException {
            zipOut.closeEntry();
        }

        public void flush() throws IOException {
            zipOut.flush();
        }

        public void write(byte[] b, int off, int len) throws IOException {
            zipOut.write(b, off, len);
        }

        public void write(byte[] b) throws IOException {
            zipOut.write(b);
        }

        public void write(int b) throws IOException {
            zipOut.write(b);
        }
    }

    protected ZipOutputStream zipOut;

    protected ZipOutput(int level, PathProcessor pathProcessor, Properties outputProperties) {
        super(outputProperties);
        this.level = level;
        this.pathProcessor = pathProcessor;
    }

    protected abstract OutputStream getOutputStream() throws IOException;

    public void open() {
        try {
            zipOut = new ZipOutputStream(getOutputStream());
            zipOut.setLevel(level);
        } catch (IOException e) {
            log.error(e);
            throw new JSExceptionWrapper(e);
        }

        directories = new HashSet();
    }

    public void close() throws IOException {
        zipOut.finish();
        zipOut.close();
    }

    public OutputStream getFileOutputStream(String path) throws IOException {
        String zipPath = getZipPath(path);
        ZipEntry fileEntry = new ZipEntry(zipPath);
        zipOut.putNextEntry(fileEntry);
        EntryOutputStream entryOut = new EntryOutputStream();
        return entryOut;
    }

    protected String getZipPath(String path) {
        String zipPath = pathProcessor.processPath(path);
        return zipPath;
    }

    public void mkdir(String path) throws IOException {
        if (directories.add(path)) {
            String zipPath = getZipPath(path);
            ZipEntry dirEntry = new ZipEntry(zipPath + ZIP_ENTRY_DIR_SUFFIX);
            zipOut.putNextEntry(dirEntry);
            zipOut.closeEntry();
        }
    }

}