Java String Unquote unquote(String s)

Description

Unquote the given string and replace escape sequences by the original characters.

License

Apache License

Parameter

Parameter	Description
s	the string to be unquoted.

Return

a string with quotes removed and escape sequences replaced by the respective character codes.

Declaration

public static String unquote(String s) 

Method Source Code

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

public class Main {
    /** Unquote the given string and replace escape sequences by the
    original characters. //from   w  w w  . ja v a2 s .  com
         
    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 unquoted.
    @return a string with quotes removed and escape sequences
    replaced by the respective character codes. */
    public static String unquote(String s) {
        char[] in = s.toCharArray();
        char[] out = new char[in.length];
        boolean inEscape = false;
        int k = 0;
        int n = in.length;
        for (int i = 0; i < n; i++) {
            if (inEscape) {
                switch (in[i]) {
                case 'n':
                    out[k++] = '\n';
                    break;
                case 't':
                    out[k++] = '\t';
                    break;
                case 'b':
                    out[k++] = '\b';
                    break;
                case 'r':
                    out[k++] = '\r';
                    break;
                case 'f':
                    out[k++] = '\f';
                    break;
                case '\\':
                    out[k++] = '\\';
                    break;
                case '\'':
                    out[k++] = '\'';
                    break;
                case '\"':
                    out[k++] = '\"';
                    break;
                default:
                    out[k++] = '\\';
                    out[k++] = in[i];
                    break;
                }
                inEscape = false;
            } else {
                if (in[i] == '\\') {
                    inEscape = true;
                } else {
                    out[k++] = in[i];
                }
            }
        }
        return (new String(out, 0, k));
    }
}

Related

1. unquote(String quoted)
2. unquote(String quoted)
3. unquote(String quotedString)
4. unquote(String s)
5. unquote(String s)
6. unquote(String s)
7. unquote(String s)
8. unquote(String s)
9. unquote(String s)