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();}

}