Java String Quote quote(String str)

Description

quote

License

Open Source License

Declaration

public static String quote(String str) 

Method Source Code

//package com.java2s;
/*/*from w  w w  .  j a  va2  s  .c  o  m*/
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
       
   This program 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 General Public License for more details.
       
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

public class Main {
    public static String quote(String str) {
        StringBuffer result = new StringBuffer("\"");
        for (int i = 0; i < str.length(); i++) {
            char c;
            switch (c = str.charAt(i)) {
            case '\0':
                result.append("\\0");
                break;
            case '\t':
                result.append("\\t");
                break;
            case '\n':
                result.append("\\n");
                break;
            case '\r':
                result.append("\\r");
                break;
            case '\\':
                result.append("\\\\");
                break;
            case '\"':
                result.append("\\\"");
                break;
            default:
                if (c < 32) {
                    String oct = Integer.toOctalString(c);
                    result.append("\\000".substring(0, 4 - oct.length())).append(oct);
                } else if (c >= 32 && c < 127)
                    result.append(str.charAt(i));
                else {
                    String hex = Integer.toHexString(c);
                    result.append("\\u0000".substring(0, 6 - hex.length())).append(hex);
                }
            }
        }
        return result.append("\"").toString();
    }

    public static String quote(char c) {
        switch (c) {
        case '\0':
            return "\'\\0\'";
        case '\t':
            return "\'\\t\'";
        case '\n':
            return "\'\\n\'";
        case '\r':
            return "\'\\r\'";
        case '\\':
            return "\'\\\\\'";
        case '\"':
            return "\'\\\"\'";
        case '\'':
            return "\'\\\'\'";
        }
        if (c < 32) {
            String oct = Integer.toOctalString(c);
            return "\'\\000".substring(0, 5 - oct.length()) + oct + "\'";
        }
        if (c >= 32 && c < 127)
            return "\'" + c + "\'";
        else {
            String hex = Integer.toHexString(c);
            return "\'\\u0000".substring(0, 7 - hex.length()) + hex + "\'";
        }
    }
}

Related

1. quote(String s, char ch)
2. quote(String s, String nullResult)
3. quote(String s, String specials, char quoteChar)
4. quote(String str)
5. quote(String str)
6. quote(String str)
7. quote(String str)
8. quote(String str)
9. quote(String str)