Java Unicode to String unicodeToAscii(String theString)

Description

unicode To Ascii

License

Open Source License

Declaration

public static String unicodeToAscii(String theString) 

Method Source Code

//package com.java2s;

public class Main {
    private static final String specialCharacters = "\t\r\n\f";
    /** A table of hex digits */
    private static final char[] hexDigit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D',
            'E', 'F' };

    public static String unicodeToAscii(String theString) {
        char aChar;
        int len = theString.length();
        StringBuffer outBuffer = new StringBuffer(len * 2);

        for (int x = 0; x < len;) {
            aChar = theString.charAt(x++);
            switch (aChar) {
            case '\\':
                outBuffer.append('\\');
                outBuffer.append('\\');
                continue;
            case '\t':
                outBuffer.append('\\');
                outBuffer.append('t');
                continue;
            case '\n':
                outBuffer.append('\\');
                outBuffer.append('n');
                continue;
            case '\r':
                outBuffer.append('\\');
                outBuffer.append('r');
                continue;
            case '\f':
                outBuffer.append('\\');
                outBuffer.append('f');
                continue;
            default:
                if ((aChar < 20) || (aChar > 127)) {
                    outBuffer.append('\\');
                    outBuffer.append('u');
                    outBuffer.append(toHex((aChar >> 12) & 0xF));
                    outBuffer.append(toHex((aChar >> 8) & 0xF));
                    outBuffer.append(toHex((aChar >> 4) & 0xF));
                    outBuffer.append(toHex((aChar >> 0) & 0xF));
                } else {
                    if (specialCharacters.indexOf(aChar) != -1)
                        outBuffer.append('\\');
                    outBuffer.append(aChar);
                }//from   w w  w.j a v  a2s . c om
            }
        }
        return outBuffer.toString();
    }

    /**
     * Convert a nibble to a hex character
     * @param nibble the nibble to convert.
     */
    private static char toHex(int nibble) {
        return hexDigit[(nibble & 0xF)];
    }
}

Related

1. Unicode2Str(String s)
2. unicode2String(String unicodeStr)
3. unicodeStringToPrettyString(String s)
4. unicodeToAscii(String name, StringBuffer result)
5. unicodeToString(int unicode)
6. unicodeToString(String escaped)
7. unicodeToString(String hex)
8. unicodeToString(String unicodeStr)