Java Json Escape jsonEscape(String str)

Description

json Escape

License

Open Source License

Declaration

public static String jsonEscape(String str) 

Method Source Code

//package com.java2s;
/*/*from   w ww  . j a  v  a  2 s  . c  o m*/
 * This file is part of Pustefix.
 *
 * Pustefix is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Pustefix 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Pustefix; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

public class Main {
    final static char[] ESC_CHARS = { 'b', 'f', 'n', 'r', 't', '\\', '"' };
    final static char[] ESC_MAP = { '\b', '\f', '\n', '\r', '\t', '\\', '"' };

    public static String jsonEscape(String str) {
        StringBuilder sb = new StringBuilder();
        sb.append("\"");
        for (int i = 0; i < str.length(); i++) {
            char ch = str.charAt(i);
            int found = -1;
            for (int k = 0; k < ESC_MAP.length && found == -1; k++) {
                if (ch == ESC_MAP[k])
                    found = k;
            }
            if (found > -1)
                sb.append("\\" + ESC_CHARS[found]);
            else if (ch < '\u0020') {
                String hexStr = Integer.toHexString(ch);
                if (hexStr.length() == 1)
                    hexStr = "0" + hexStr;
                sb.append("\\u00" + hexStr);
            } else
                sb.append(ch);
        }
        sb.append("\"");
        return sb.toString();
    }
}

Related

1. escape4Json(String source)
2. escapeJSON(String aText)
3. jsonEscape(CharSequence s)
4. jsonEscape(String in)
5. jsonEscape(String s)
6. JsonEscape(String str)
7. jsonEscape(String string)
8. jsonEscapes(String str)