Java Char Array Create charArrayLiteral(CharSequence cs)

Description

char Array Literal

License

Open Source License

Declaration

public static String charArrayLiteral(CharSequence cs) 

Method Source Code

//package com.java2s;
/*// ww w  .j  a v  a 2  s  . co  m
 * Copyright (c) 2005 Henri Sivonen
 *
 * 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.
 */

public class Main {
    public static String charArrayLiteral(CharSequence cs) {
        if (cs == null) {
            return "null";
        }
        StringBuilder sb = new StringBuilder();
        sb.append('{');
        int len = cs.length();
        for (int i = 0; i < len; i++) {
            sb.append(" \'");
            sb.append(unquotedCharLiteral(cs.charAt(i)));
            sb.append("\',");
        }
        if (sb.length() > 1) {
            sb.deleteCharAt(sb.length() - 1);
        }
        sb.append(" }");
        return sb.toString();
    }

    public static String unquotedCharLiteral(char c) {
        // http://java.sun.com/docs/books/jls/second_edition/html/lexical.doc.html#101089
        switch (c) {
        case '\b':
            return "\\b";
        case '\t':
            return "\\t";
        case '\n':
            return "\\n";
        case '\f':
            return "\\f";
        case '\r':
            return "\\r";
        case '\"':
            return "\\\"";
        case '\'':
            return "\\\'";
        case '\\':
            return "\\\\";
        default:
            if (c >= ' ' && c <= '~') {
                return "" + c;
            } else {
                String hex = Integer.toHexString((int) c);
                switch (hex.length()) {
                case 1:
                    return "\\u000" + hex;
                case 2:
                    return "\\u00" + hex;
                case 3:
                    return "\\u0" + hex;
                default:
                    return "\\u" + hex;
                }
            }
        }
    }
}

Related

1. charArray(int arraySize)
2. toCharacterArray(String s)
3. toCharArray(boolean[] array)
4. toCharArray(byte[] barr)
5. toCharArray(byte[] byteArray)