Java URL Decode decode(String source)

Description

decode

License

Open Source License

Declaration

public static String decode(String source) 

Method Source Code

//package com.java2s;
/*//from w  ww  . j  av  a  2s  . c  o  m
 * ====================================================================
 * Copyright (c) 2004 TMate Software Ltd.  All rights reserved.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution.  The terms
 * are also available at http://tmate.org/svn/license.html.
 * If newer versions of this license are posted there, you may use a
 * newer version instead, at your option.
 * ====================================================================
 */

import java.io.IOException;
import java.net.URLDecoder;

import java.util.StringTokenizer;

public class Main {
    public static String decode(String source) {
        if (source == null) {
            return source;
        }
        StringBuffer dst = new StringBuffer();
        for (StringTokenizer tokens = new StringTokenizer(source, "+/:", true); tokens.hasMoreTokens();) {
            String token = tokens.nextToken();
            if ("+".equals(token)) {
                dst.append("+");
            } else if ("/".equals(token)) {
                dst.append("/");
            } else if (":".equals(token)) {
                dst.append(":");
            } else {
                try {
                    dst.append(URLDecoder.decode(token, "UTF-8"));
                } catch (IOException e) {
                    dst.append(token);
                }
            }
        }
        return dst.toString();
    }

    public static final String append(String path, String segment) {
        path = isEmpty(path) ? "" : removeTrailingSlash(path);
        segment = isEmpty(segment) ? "" : removeLeadingSlash(segment);
        if (path.endsWith("/")) {
            path = path.substring(0, path.length() - "/".length());
        }
        if (segment.startsWith("/")) {
            segment = segment.substring("/".length());
        }
        return path + '/' + segment;
    }

    public static final boolean isEmpty(String path) {
        return path == null || "".equals(path.trim()) || "/".equals(path.trim());
    }

    public static final String removeTrailingSlash(String path) {
        if (isEmpty(path)) {
            return path;
        }
        if (path.charAt(path.length() - 1) == '/') {
            path = path.substring(0, path.length() - 1);
        }
        return path;
    }

    public static String removeLeadingSlash(String path) {
        if (path == null || path.length() == 0) {
            return "";
        }
        if (path.charAt(0) == '/') {
            path = path.substring(1);
        }
        return path;
    }
}

Related

1. decode(String s)
2. decode(String s)
3. decode(String s)
4. decode(String s, boolean formDecode)
5. decode(String s, String enc)
6. decode(String source, String encoding)
7. decode(String source, String encoding)
8. decode(String str)
9. decode(String str)