mcs/class/Commons.Xml.Relaxng/Commons.Xml.Relaxng/Misc.cs

   1 //\r
   2 // Commons.Xml.Relaxng.General.cs\r
   3 //\r
   4 // Author:\r
   5 //      Atsushi Enomoto <ginga@kit.hi-ho.ne.jp>\r
   6 //\r
   7 // 2003 Atsushi Enomoto "No rights reserved."\r
   8 //\r
   9 using System;\r
  10 using System.Collections;\r
  11 using System.IO;\r
  12 using System.Xml;\r
  13 using Commons.Xml.Relaxng.Derivative;\r
  14 \r
  15 namespace Commons.Xml.Relaxng\r
  16 {\r
  17         public class Util\r
  18         {\r
  19                 public static string ResolveUri (string baseUri, string href)\r
  20                 {\r
  21 #if true\r
  22                         Uri uri = null;\r
  23                         if (baseUri != null && baseUri.Length > 0)
  24                                 uri = new Uri (baseUri);
  25                         Uri result = new XmlUrlResolver ().ResolveUri (uri, href);
  26                         if (result.Query.Length > 0 || result.Fragment.Length > 0)
  27                                 throw new RelaxngException ("Invalid URI format: " + href);
  28                         return result.ToString ();
  29 #else
  30                         // If baseUri does not exist, then it is only the way.\r
  31                         if (baseUri == String.Empty)\r
  32                                 return href;\r
  33 \r
  34                         // If href itself is a uri, then return it directly.\r
  35                         try {\r
  36                                 return new Uri (href).ToString ();\r
  37                         } catch (UriFormatException) {\r
  38                         }\r
  39 \r
  40                         // If baseUri is a valid uri, then make relative uri.\r
  41                         try {\r
  42                                 return new Uri (\r
  43                                         new Uri (baseUri), href).ToString ();\r
  44                         } catch (UriFormatException) {\r
  45                         }\r
  46 \r
  47                         // Otherwise, they might be filesystem path.\r
  48                         if (Path.IsPathRooted (href))\r
  49                                 return href;\r
  50 \r
  51                         return Path.Combine (\r
  52                                 Path.GetDirectoryName (baseUri), href);\r
  53 #endif\r
  54                 }\r
  55 \r
  56                 public static string NormalizeWhitespace (string s)\r
  57                 {\r
  58                         if (s.Length == 0)\r
  59                                 return s;\r
  60 \r
  61                         char [] ca = s.ToCharArray ();\r
  62                         int j = 0;\r
  63                         for (int i = 0; i < ca.Length; i++) {\r
  64                                 switch (ca [i]) {\r
  65                                 case ' ':\r
  66                                 case '\r':\r
  67                                 case '\t':\r
  68                                 case '\n':\r
  69                                         if (j == 0)\r
  70                                                 break;\r
  71                                         if (ca [j - 1] != ' ')\r
  72                                                 ca [j++] = ' ';\r
  73                                         break;\r
  74                                 default:\r
  75                                         ca [j++] = ca [i];\r
  76                                         break;\r
  77                                 }\r
  78                         }\r
  79                         if (j == 0)\r
  80                                 return String.Empty;\r
  81                         string r = new string (ca, 0, (ca [j - 1] != ' ') ? j : j - 1);\r
  82                         return r;\r
  83                 }\r
  84 \r
  85                 public static bool IsWhitespace (string s)\r
  86                 {\r
  87                         for (int i = 0; i < s.Length; i++) {\r
  88                                 switch (s [i]) {\r
  89                                 case ' ':\r
  90                                 case '\t':\r
  91                                 case '\n':\r
  92                                 case '\r':\r
  93                                         continue;\r
  94                                 default:\r
  95                                         return false;\r
  96                                 }\r
  97                         }\r
  98                         return true;\r
  99                 }\r
 100         }\r
 101 }\r
 102 \r