Java String Unescape unescape(String src)

Description

unescape

License

Open Source License

Parameter

Parameter	Description
src	a parameter

Declaration

public static String unescape(String src) 

Method Source Code

//package com.java2s;

public class Main {
    /**/*from   w w w  .  ja v a  2 s  . c om*/
     * @param src
     * @return
     */
    public static String unescape(String src) {
        if (src == null)
            return null;
        StringBuffer tmp = new StringBuffer();
        tmp.ensureCapacity(src.length());
        int lastPos = 0, pos = 0;
        char ch;
        while (lastPos < src.length()) {
            pos = src.indexOf("%", lastPos);
            if (pos == lastPos) {
                if (src.charAt(pos + 1) == 'u') {
                    ch = (char) Integer.parseInt(src.substring(pos + 2, pos + 6), 16);
                    tmp.append(ch);
                    lastPos = pos + 6;
                } else if (src.charAt(pos + 1) == ' ' || src.charAt(pos + 1) == ';') {
                    tmp.append(src.substring(pos, pos + 1));
                    lastPos = pos + 1;
                } else {
                    ch = (char) Integer.parseInt(src.substring(pos + 1, pos + 3), 16);
                    tmp.append(ch);
                    lastPos = pos + 3;
                }
            } else {
                if (pos == -1) {
                    tmp.append(src.substring(lastPos));
                    lastPos = src.length();
                } else {
                    tmp.append(src.substring(lastPos, pos));
                    lastPos = pos;
                }
            }
        }
        return tmp.toString();
    }

    public static String subString(String original, int length) {
        if (null == original || "".equals(original)) {
            return original;
        }
        if (original.length() <= length) {
            return original;
        }
        return original.substring(0, length);
    }
}

Related

1. unescape(String s, String toUnescape)
2. unescape(String source)
3. unescape(String src)
4. unescape(String src)
5. unescape(String src)
6. unescape(String st)
7. unescape(String str)
8. unescape(String str)
9. unescape(String str)