Java String Quote quote(String s)

Description

Quote the given string by replacing unprintable characters by escape sequences.

License

Apache License

Parameter

Parameter	Description
s	the string to be quoted.

Return

a string which is a quoted representation of the input string.

Declaration

public static String quote(String s) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

public class Main {
    /** Quote the given string by replacing unprintable characters by escape
    sequences./*from  w  w  w.jav a  2  s  .c om*/
         
    From PXLab at 
    http://www.uni-mannheim.de/fakul/psycho/irtel/pxlab/index-download.html
           
    @author Hans Irtel, with mods by Dave Voorhis
    @version 0.1.9
        
    @param s the string to be quoted.
    @return a string which is a quoted representation of the input
    string. */
    public static String quote(String s) {
        char[] in = s.toCharArray();
        int n = in.length;
        StringBuffer out = new StringBuffer(n);
        for (int i = 0; i < n; i++) {
            switch (in[i]) {
            case '\n':
                out.append("\\n");
                break;
            case '\t':
                out.append("\\t");
                break;
            case '\b':
                out.append("\\b");
                break;
            case '\r':
                out.append("\\r");
                break;
            case '\f':
                out.append("\\f");
                break;
            case '\\':
                out.append("\\\\");
                break;
            case '\'':
                out.append("\\\'");
                break;
            case '\"':
                out.append("\\\"");
                break;
            default:
                out.append(new String(in, i, 1));
                break;
            }
        }
        return (out.toString());
    }
}

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