5 // Marek Sieradzki (marek.sieradzki@gmail.com)
7 // (C) 2005 Marek Sieradzki
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 using System.Collections;
34 namespace Microsoft.Build.BuildEngine {
35 public static class Utilities {
37 static Hashtable charsToEscape;
41 charsToEscape = new Hashtable ();
43 charsToEscape.Add ('$', null);
44 charsToEscape.Add ('%', null);
45 charsToEscape.Add ('\'', null);
46 charsToEscape.Add ('(', null);
47 charsToEscape.Add (')', null);
48 charsToEscape.Add ('*', null);
49 charsToEscape.Add (';', null);
50 charsToEscape.Add ('?', null);
51 charsToEscape.Add ('@', null);
54 public static string Escape (string unescapedExpression)
56 StringBuilder sb = new StringBuilder ();
58 foreach (char c in unescapedExpression) {
59 if (charsToEscape.Contains (c))
60 sb.AppendFormat ("%{0:x2}", (int) c);
65 return sb.ToString ();
68 // FIXME: add tests for this
69 internal static string Unescape (string escapedExpression)
71 StringBuilder sb = new StringBuilder ();
74 while (i < escapedExpression.Length) {
75 sb.Append (Uri.HexUnescape (escapedExpression, ref i));
78 return sb.ToString ();