Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2015 iChano incorporation's Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.UnsupportedEncodingException;

import java.net.URLDecoder;
import java.net.URLEncoder;

import java.util.StringTokenizer;

public class Main {
    public static String encodeUrl(String url, String charset) throws UnsupportedEncodingException {
        if (url == null) {
            return "";
        }

        int index = url.indexOf("?");
        if (index >= 0) {

            String result = url.substring(0, index + 1);
            String paramsPart = url.substring(index + 1);
            StringTokenizer tokenizer = new StringTokenizer(paramsPart, "&");
            while (tokenizer.hasMoreTokens()) {
                String definition = tokenizer.nextToken();
                int eqIndex = definition.indexOf("=");
                if (eqIndex >= 0) {
                    String paramName = definition.substring(0, eqIndex);
                    String paramValue = definition.substring(eqIndex + 1);
                    result += paramName + "=" + encodeUrlParam(paramValue, charset) + "&";
                } else {
                    result += encodeUrlParam(definition, charset) + "&";
                }
            }

            if (result.endsWith("&")) {
                result = result.substring(0, result.length() - 1);
            }

            return result;

        }

        return url;
    }

    private static String encodeUrlParam(String value, String charset) throws UnsupportedEncodingException {
        if (value == null) {
            return "";
        }

        try {
            String decoded = URLDecoder.decode(value, charset);

            String result = "";
            for (int i = 0; i < decoded.length(); i++) {
                char ch = decoded.charAt(i);
                result += (ch == '#') ? "#" : URLEncoder.encode(String.valueOf(ch), charset);
            }

            return result;
        } catch (IllegalArgumentException e) {
            return value;
        }
    }
}