Java version of the ecape unecape function and [to]
Java version of the escape and unescape function [to]
Class EscapeUnescape
(
Public static String escape (String src)
(
Int i;
Char j;
StringBuffer tmp = new StringBuffer ();
Tmp.ensureCapacity (src.length () * 6);
For (i = 0; i <src.length (); i + +)
(
J = src.charAt (i);
If (Character.isDigit (j) | | Character.isLowerCase (j) | | Character.isUpperCase (j))
Tmp.append (j);
Else
If (j <256)
(
Tmp.append ( "%");
If (j <16)
Tmp.append ( "0");
Tmp.append (Integer.toString (j, 16));
)
Else
(
Tmp.append ( "% u");
Tmp.append (Integer.toString (j, 16));
)
)
Return tmp.toString ();
)
Public static String unescape (String src)
(
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 (+2 pos, pos +6), 16);
Tmp.append (ch);
LastPos +6 = pos;
)
Else
(
Ch = (char) Integer.parseInt (src.substring (+1 pos, pos +3), 16);
Tmp.append (ch);
LastPos +3 = pos;
)
)
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 void main (String [] args)
(
String tmp ="<;'][{} \ "> ~!@#$%^&*()_+| \ \ =-,./?><;'][{} \" ";
System.out.println ( "testing escape:" + tmp);
Tmp = escape (tmp);
System.out.println (tmp);
System.out.println ( "testing unescape:" + tmp);
System.out.println (unescape (tmp));
)
)
Tags: function