Java Unicode Create toUnicode(String theString, boolean escapeSpace)

Description

to Unicode

License

Open Source License

Declaration

public static String toUnicode(String theString, boolean escapeSpace) 

Method Source Code

//package com.java2s;

public class Main {
    private static final char[] hexDigit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D',
            'E', 'F' };

    public static String toUnicode(String theString, boolean escapeSpace) {
        int len = theString.length();
        int bufLen = len * 2;
        if (bufLen < 0) {
            bufLen = Integer.MAX_VALUE;
        }/*from   www .j a va 2 s  . com*/
        StringBuffer outBuffer = new StringBuffer(bufLen);

        for (int x = 0; x < len; x++) {
            char aChar = theString.charAt(x);
            // Handle common case first, selecting largest block that
            // avoids the specials below
            if ((aChar > 61) && (aChar < 127)) {
                if (aChar == '\\') {
                    outBuffer.append('\\');
                    outBuffer.append('\\');
                    continue;
                }
                outBuffer.append(aChar);
                continue;
            }
            switch (aChar) {
            case ' ':
                if (x == 0 || escapeSpace)
                    outBuffer.append('\\');
                outBuffer.append(' ');
                break;
            case '\t':
                outBuffer.append('\\');
                outBuffer.append('t');
                break;
            case '\n':
                outBuffer.append('\\');
                outBuffer.append('n');
                break;
            case '\r':
                outBuffer.append('\\');
                outBuffer.append('r');
                break;
            case '\f':
                outBuffer.append('\\');
                outBuffer.append('f');
                break;
            case '=': // Fall through
            case ':': // Fall through
            case '#': // Fall through
            case '!':
                outBuffer.append('\\');
                outBuffer.append(aChar);
                break;
            default:
                if ((aChar < 0x0020) || (aChar > 0x007e)) {
                    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 & 0xF));
                } else {
                    outBuffer.append(aChar);
                }
            }
        }
        return outBuffer.toString();
    }

    private static char toHex(int nibble) {
        return hexDigit[(nibble & 0xF)];
    }
}

Related

1. toUnicode(String str)
2. toUnicode(String string)
3. toUnicode(String strText)
4. toUnicode(String text)
5. toUnicode(String text)
6. toUnicode(String value)
7. toUnicode(StringBuilder strBuilder, char ch)
8. toUnicodeBytes(String str)
9. toUnicodeEncoded(String data)