mcs/tools/compiler-tester/xmldocdiff.cs

   1 //\r
   2 // xmldocdiff.cs\r
   3 //\r
   4 // Author:\r
   5 //   Marek Safar (marek.safar@gmail.com)\r
   6 //\r
   7 // Copyright (C) 2012 Xamarin Inc (http://www.xamarin.com)\r
   8 //\r
   9 // Permission is hereby granted, free of charge, to any person obtaining\r
  10 // a copy of this software and associated documentation files (the\r
  11 // "Software"), to deal in the Software without restriction, including\r
  12 // without limitation the rights to use, copy, modify, merge, publish,\r
  13 // distribute, sublicense, and/or sell copies of the Software, and to\r
  14 // permit persons to whom the Software is furnished to do so, subject to\r
  15 // the following conditions:\r
  16 // \r
  17 // The above copyright notice and this permission notice shall be\r
  18 // included in all copies or substantial portions of the Software.\r
  19 // \r
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,\r
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\r
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\r
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE\r
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION\r
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION\r
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
  27 //
  28 \r
  29 #if !NET_2_1\r
  30 \r
  31 using System;\r
  32 using System.Collections;\r
  33 using System.Collections.Generic;\r
  34 using System.Xml;\r
  35 using System.Linq;\r
  36 \r
  37 public class XmlComparer\r
  38 {\r
  39         public class ComparisonException : Exception\r
  40         {\r
  41                 public ComparisonException (string message)\r
  42                         : base (message)\r
  43                 {\r
  44                 }\r
  45         }\r
  46 \r
  47         static readonly bool debug = false;\r
  48         readonly string start;\r
  49 \r
  50         public XmlComparer (string startNode)\r
  51         {\r
  52                 this.start = "/" + startNode;\r
  53         }\r
  54 \r
  55         public void Compare (string reference, string output)\r
  56         {\r
  57                 XmlDocument doc1 = new XmlDocument ();\r
  58                 doc1.Load (reference);\r
  59                 XmlDocument doc2 = new XmlDocument ();\r
  60                 doc2.Load (output);\r
  61 \r
  62                 var memberList1 = doc1.SelectSingleNode (start);\r
  63                 var memberList2 = doc2.SelectSingleNode (start);\r
  64 \r
  65                 CompareNodes (memberList1, memberList2);\r
  66         }\r
  67 \r
  68         static bool CompareNodes (XmlNode reference, XmlNode output)\r
  69         {\r
  70                 List<Tuple<string, XmlNode>> ref_nodes = new List<Tuple<string, XmlNode>> ();\r
  71                 foreach (XmlNode node in reference.ChildNodes) {\r
  72                         if (node.NodeType == XmlNodeType.Comment)\r
  73                                 continue;\r
  74 \r
  75                         ref_nodes.Add (Tuple.Create (node.Name, node));\r
  76                 }\r
  77 \r
  78                 foreach (XmlNode node in output.ChildNodes) {\r
  79                         if (node.NodeType == XmlNodeType.Comment)\r
  80                                 continue;\r
  81 \r
  82                         Tuple<string, XmlNode> found = null;\r
  83                         foreach (var entry in ref_nodes.Where (l => l.Item1 == node.Name)) {\r
  84                                 if (node.Attributes == null) {\r
  85                                         if (node.Attributes != entry.Item2.Attributes)\r
  86                                                 continue;\r
  87                                 } else {\r
  88                                         List<XmlAttribute> attrs = node.Attributes.Cast<XmlAttribute> ().ToList ();\r
  89                                         XmlAttribute missing = null;\r
  90                                         foreach (XmlAttribute attr in entry.Item2.Attributes) {\r
  91                                                 var match = attrs.Find (l => l.Name == attr.Name);\r
  92                                                 if (match == null) {\r
  93                                                         missing = attr;\r
  94                                                         break;\r
  95                                                 }\r
  96 \r
  97                                                 if (match.Value == attr.Value)\r
  98                                                         attrs.Remove (match);\r
  99                                         }\r
 100 \r
 101                                         if (missing != null || attrs.Count > 0) {\r
 102                                                 continue;\r
 103                                         }\r
 104                                 }\r
 105 \r
 106                                 if (node.HasChildNodes != entry.Item2.HasChildNodes)\r
 107                                         continue;\r
 108 \r
 109                                 if (!node.HasChildNodes || CompareNodes (node, entry.Item2)) {\r
 110                                         found = entry;\r
 111                                         break;\r
 112                                 }\r
 113                         }\r
 114 \r
 115                         if (found == null) {\r
 116                                 Report ("Expected node: " + node.OuterXml);\r
 117                                 return false;\r
 118                         }\r
 119 \r
 120                         ref_nodes.Remove (found);\r
 121                 }\r
 122 \r
 123                 if (ref_nodes.Count > 0) {\r
 124                         Report ("Unexpected node: " + ref_nodes[0].Item2.OuterXml);\r
 125                         return false;\r
 126                 }\r
 127 \r
 128                 return true;\r
 129         }\r
 130 \r
 131         static void Report (string format, params object[] args)\r
 132         {\r
 133                 if (debug)\r
 134                         Console.WriteLine (format, args);\r
 135                 else\r
 136                         throw new ComparisonException (String.Format (format, args));\r
 137         }\r
 138 }\r
 139 \r
 140 #endif