Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
// License & terms of use: http://www.unicode.org/copyright.html#License

public class Main {
    static final char DIGITS[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F',
            'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' };

    /**
     * Escape unprintable characters using <backslash>uxxxx notation
     * for U+0000 to U+FFFF and <backslash>Uxxxxxxxx for U+10000 and
     * above.  If the character is printable ASCII, then do nothing
     * and return FALSE.  Otherwise, append the escaped notation and
     * return TRUE.
     */
    public static boolean escapeUnprintable(StringBuffer result, int c) {
        if (isUnprintable(c)) {
            result.append('\\');
            if ((c & ~0xFFFF) != 0) {
                result.append('U');
                result.append(DIGITS[0xF & (c >> 28)]);
                result.append(DIGITS[0xF & (c >> 24)]);
                result.append(DIGITS[0xF & (c >> 20)]);
                result.append(DIGITS[0xF & (c >> 16)]);
            } else {
                result.append('u');
            }
            result.append(DIGITS[0xF & (c >> 12)]);
            result.append(DIGITS[0xF & (c >> 8)]);
            result.append(DIGITS[0xF & (c >> 4)]);
            result.append(DIGITS[0xF & c]);
            return true;
        }
        return false;
    }

    /**
     * Return true if the character is NOT printable ASCII.  The tab,
     * newline and linefeed characters are considered unprintable.
     */
    public static boolean isUnprintable(int c) {
        return !(c >= 0x20 && c <= 0x7E);
    }
}