Converts an escaped directory name back to its original value - Java java.lang

Java examples for java.lang:String Escape

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Description

Converts an escaped directory name back to its original value

Demo Code

/**//from   w  w w  .  j  ava2s  .  c  om
 * 
 * Copyright (C) 2004-2008 FhG Fokus
 *
 * This file is part of the FhG Fokus UPnP stack - an open source UPnP implementation
 * with some additional features
 *
 * You can redistribute the FhG Fokus UPnP stack and/or modify it
 * under the terms of the GNU General Public License Version 3 as published by
 * the Free Software Foundation.
 *
 * For a license to use the FhG Fokus UPnP stack software under conditions
 * other than those described here, or to purchase support for this
 * software, please contact Fraunhofer FOKUS by e-mail at the following
 * addresses:
 *   upnpstack@fokus.fraunhofer.de
 *
 * The FhG Fokus UPnP stack 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, see <http://www.gnu.org/licenses/>
 * or write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */
 
//package com.java2s;

public class Main {
    public static void main(String[] argv) {
        String directoryName = "java2s.com";
        System.out.println(escapedDirectoryNameToString(directoryName));
    }

    /**
     * Converts an escaped directory name back to its original value
     * 
     * @param directoryName
     *          The escaped URL
     * @return The original name
     */
    public static String escapedDirectoryNameToString(String directoryName) {
        int i = 0;
        String result = "";

        try {
            while (i < directoryName.length()) {
                char currentChar = directoryName.charAt(i);
                if (currentChar != '%') {
                    result += currentChar;
                    i++;
                } else {
                    int value = Integer.parseInt(
                            directoryName.substring(i + 1, i + 3), 16);
                    result += new Character((char) value);

                    i += 3;
                }
            }
            return result;
        } catch (Exception ex) {
        }
        return null;
    }
}

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