Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 *     Copyright (C) 2009-2011  Jack A. Rider All rights reserved.
 * 
 *     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 3 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.
 */

public class Main {
    public static String toUnicode(String input) {
        StringBuffer ret = new StringBuffer();
        if (input != null) {
            for (int i = 0; i < input.length(); i++) {
                char ch = input.charAt(i);
                if (!Character.isWhitespace(ch) && ch < 0x20 || ch > 0x7e) {
                    ret.append("\\u");
                    // requires 1.5 VM
                    // ret.append(String.format("%1$04x", new Object[] { Integer.valueOf(ch) }));
                    ret.append(leading4Zeros(Integer.toHexString(ch)));
                } else {
                    ret.append(ch);
                }
            }
        }
        return ret.toString();
    }

    /**
     * @param hexString max 4 characters length
     * @return same string with leading zeros
     */
    public static char[] leading4Zeros(String hexString) {
        char[] chars = "0000".toCharArray();
        int length = hexString.length();
        hexString.getChars(0, length, chars, 4 - length);
        return chars;
    }
}