Application: gvSIG desktop

/*

 * Cresques Mapping Suite. Graphic Library for constructing mapping applications.

 *

 * Copyright (C) 2004-5.

 *

 * 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 2

 * 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, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 * cresques@gmail.com

 */

package org.cresques.io;

import java.io.IOException;

import java.io.InputStream;

import java.util.Enumeration;

import java.util.zip.ZipEntry;

import java.util.zip.ZipFile;

/**

 * @author "Luis W. Sevilla" <sevilla_lui@gva.es>* @author administrador

 */

public class ZipFileFolder extends FileFolder {

    String zName = null;

    public ZipFile file = null;

    public ZipFileFolder() {

        super();

    }

    /**

     * Constructor.

     *

     * @param fname

     */

    public ZipFileFolder(String fName) throws IOException {

        fName = DataSource.normalize(fName);

        if (isUrl(fName)) {

            zName = getZName(fName);

        } else {

            zName = fName;

        }

        file = new ZipFile(zName);

    }

    /**

     * Analiza un nombre de fichero en formato zip://zipname.zip?file.ext

     * @param urlName

     */

    public static boolean isUrl(String name) {

        String str = name.substring(0, 3);

        str.toLowerCase();

        if (str.compareTo("zip") == 0) {

            return true;

        }

        return false;

    }

    private String getZName(String urlName) {

        return urlName.substring(6, urlName.indexOf("?"));

    }

    private String getFName(String urlName) {

        return urlName.substring(urlName.indexOf("?") + 1);

    }

    public ZipEntry getZipEntry(String fName) throws IOException {

        InputStream is = null;

        if (isUrl(fName)) {

            fName = getFName(fName);

        }

        return file.getEntry(fName);

    }

    public InputStream getInputStream(String fName) throws IOException {

        return file.getInputStream(getZipEntry(fName));

    }

    public InputStream getInputStream(ZipEntry ze) throws IOException {

        return file.getInputStream(ze);

    }

    public int count() {

        return file.size();

    }

    public Enumeration entries() {

        return file.entries();

    }

}