mcs/class/Microsoft.Build.Engine/Microsoft.Build.BuildEngine/UsingTask.cs

   1 //
   2 // UsingTask.cs: Represents a single UsingTask element in an MSBuild project.
   3 //
   4 // Author:
   5 //   Marek Sieradzki (marek.sieradzki@gmail.com)
   6 //
   7 // (C) 2005 Marek Sieradzki
   8 //
   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:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  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.
  27
  28 #if NET_2_0
  29
  30 using System;
  31 using System.IO;
  32 using System.Xml;
  33 using Mono.XBuild.Framework;
  34
  35 namespace Microsoft.Build.BuildEngine {
  36         public class UsingTask {
  37
  38                 ImportedProject importedProject;
  39                 Project         project;
  40                 XmlElement      usingTaskElement;
  41
  42                 internal UsingTask (XmlElement usingTaskElement, Project project, ImportedProject importedProject)
  43                 {
  44                         this.project = project;
  45                         this.importedProject = importedProject;
  46                         this.usingTaskElement = usingTaskElement;
  47
  48                         if (project == null)
  49                                 throw new ArgumentNullException ("project");
  50                         if (usingTaskElement == null)
  51                                 throw new ArgumentNullException ("usingTaskElement");
  52                         if (AssemblyName != null && AssemblyFile != null)
  53                                 throw new InvalidProjectFileException ("A <UsingTask> element must contain either the \"AssemblyName\" attribute or the \"AssemblyFile\" attribute (but not both).  ");
  54                         if (TaskName == String.Empty)
  55                                 throw new InvalidProjectFileException ("The required attribute \"TaskName\" is missing from element <UsingTask>.  ");
  56                 }
  57
  58                 internal void Evaluate ()
  59                 {
  60                         AssemblyLoadInfo loadInfo;
  61
  62                         if (AssemblyName != null) {
  63                                 loadInfo = new AssemblyLoadInfo (AssemblyName, TaskName);
  64                         } else if (AssemblyFile != null) {
  65                                 Expression exp = new Expression ();
  66                                 exp.Parse (AssemblyFile);
  67                                 string filename = (string) exp.ConvertTo (project, typeof (string));
  68
  69                                 if (Path.IsPathRooted (filename) == false) {
  70                                         string ffn;
  71                                         if (importedProject != null) {
  72                                                 ffn = Path.GetDirectoryName (importedProject.FullFileName);
  73                                         } else if (project.FullFileName != String.Empty) {
  74                                                 ffn = Path.GetDirectoryName (project.FullFileName);
  75                                         } else {
  76                                                 ffn = Environment.CurrentDirectory;
  77                                         }
  78                                         filename = Path.Combine (ffn, filename);
  79                                 }
  80                                 loadInfo = new AssemblyLoadInfo (LoadInfoType.AssemblyFilename, filename, null, null, null, null, TaskName);
  81                         } else {
  82                                 throw new InvalidProjectFileException ("A <UsingTask> element must contain either the \"AssemblyName\" attribute or the \"AssemblyFile\" attribute (but not both).  ");
  83                         }
  84                         project.TaskDatabase.RegisterTask (TaskName, loadInfo);
  85                 }
  86
  87                 public bool IsImported {
  88                         get { return importedProject != null; }
  89                 }
  90
  91                 public string AssemblyFile {
  92                         get {
  93                                 string assemblyFile = usingTaskElement.GetAttribute ("AssemblyFile");
  94                                 return (assemblyFile == String.Empty) ? null : assemblyFile;
  95                         }
  96                 }
  97
  98                 public string AssemblyName {
  99                         get {
 100                                 string assemblyName = usingTaskElement.GetAttribute ("AssemblyName");
 101                                 return (assemblyName == String.Empty) ? null : assemblyName;
 102                         }
 103                 }
 104
 105                 public string Condition {
 106                         get {
 107                                 string condition = usingTaskElement.GetAttribute ("Condition");
 108                                 return (condition == String.Empty) ? null : condition;
 109                         }
 110                 }
 111
 112                 public string TaskName {
 113                         get { return usingTaskElement.GetAttribute ("TaskName"); }
 114                 }
 115         }
 116 }
 117
 118 #endif