Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * * Copyright (C) 2013-2014 Matt Baxter http://kitteh.org
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    private static final char CTCP_DELIMITER = '\u0001';
    private static final char CTCP_MQUOTE = '\u0016';
    private static final Pattern CTCP_ESCAPABLE_CHAR = Pattern
            .compile("[\n\r\u0000" + CTCP_DELIMITER + CTCP_MQUOTE + "\\\\]");

    /**
     * Converts a given message to CTCP formatting.
     *
     * @param message message to convert
     * @return converted message
     */
    static String toCTCP(String message) {
        StringBuilder builder = new StringBuilder();
        builder.append(CTCP_DELIMITER);
        int currentIndex = 0;
        Matcher matcher = CTCP_ESCAPABLE_CHAR.matcher(message);
        while (matcher.find()) {
            if (matcher.start() > currentIndex) {
                builder.append(message.substring(currentIndex, matcher.start()));
            }
            switch (matcher.group()) {
            case "\n":
                builder.append(CTCP_MQUOTE).append('n');
                break;
            case "\r":
                builder.append(CTCP_MQUOTE).append('r');
                break;
            case "\u0000":
                builder.append(CTCP_MQUOTE).append('0');
                break;
            case CTCP_MQUOTE + "":
                builder.append(CTCP_MQUOTE).append(CTCP_MQUOTE);
                break;
            case CTCP_DELIMITER + "":
                builder.append("\\a");
                break;
            case "\\":
                builder.append("\\\\");
                break;
            }
            currentIndex = matcher.end();
        }
        if (currentIndex < message.length()) {
            builder.append(message.substring(currentIndex));
        }
        builder.append(CTCP_DELIMITER);
        return builder.toString();
    }
}