2010-04-06 Jb Evain <jbevain@novell.com>
[mcs.git] / class / Commons.Xml.Relaxng / Commons.Xml.Relaxng / Misc.cs
blobbc51d78bf96c1b1d4d5c374ca066232513061c1c
1 //
2 // Commons.Xml.Relaxng.General.cs
3 //
4 // Author:
5 // Atsushi Enomoto <ginga@kit.hi-ho.ne.jp>
6 //
7 // 2003 Atsushi Enomoto "No rights reserved."
8 //
9 // Copyright (c) 2004 Novell Inc.
10 // All rights reserved
14 // Permission is hereby granted, free of charge, to any person obtaining
15 // a copy of this software and associated documentation files (the
16 // "Software"), to deal in the Software without restriction, including
17 // without limitation the rights to use, copy, modify, merge, publish,
18 // distribute, sublicense, and/or sell copies of the Software, and to
19 // permit persons to whom the Software is furnished to do so, subject to
20 // the following conditions:
21 //
22 // The above copyright notice and this permission notice shall be
23 // included in all copies or substantial portions of the Software.
24 //
25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 using System;
34 using System.Collections;
35 using System.IO;
36 using System.Text;
37 using System.Xml;
38 using Commons.Xml.Relaxng.Derivative;
40 namespace Commons.Xml.Relaxng
42 internal class Util
44 public static string NormalizeWhitespace (string s)
46 if (s.Length == 0)
47 return s;
49 StringBuilder sb = null;
50 int noSpaceIndex = 0;
51 bool inSpace = false;
53 for (int i = 0; i < s.Length; i++) {
54 switch (s [i]) {
55 case ' ':
56 case '\r':
57 case '\t':
58 case '\n':
59 if (inSpace)
60 continue;
61 if (sb == null)
62 sb = new StringBuilder (s.Length);
63 if (noSpaceIndex < i) {
64 if (sb.Length > 0)
65 sb.Append (' ');
66 sb.Append (s, noSpaceIndex, i - noSpaceIndex);
68 inSpace = true;
69 break;
70 default:
71 if (inSpace) {
72 noSpaceIndex = i;
73 inSpace = false;
75 break;
78 if (sb == null)
79 return s;
80 if (!inSpace && noSpaceIndex < s.Length) {
81 sb.Append (' ');
82 sb.Append (s, noSpaceIndex, s.Length - noSpaceIndex);
84 return sb.ToString ();
87 public static bool IsWhitespace (string s)
89 for (int i = 0; i < s.Length; i++) {
90 switch (s [i]) {
91 case ' ':
92 case '\t':
93 case '\n':
94 case '\r':
95 continue;
96 default:
97 return false;
100 return true;