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//
// BuildTaskFactory.cs
//
// Author:
// Atsushi Enomoto (atsushi@xamarin.com)
//
// Copyright (C) 2013 Xamarin Inc. (http://www.xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Build.Framework;
using System.Reflection;
using Microsoft.Build.Execution;
using Microsoft.Build.Evaluation;
using Microsoft.Build.Construction;
using System.IO;
using System.Xml;
namespace Microsoft.Build.Internal
{
class BuildTaskDatabase
{
const string default_tasks_file = "Microsoft.Common.tasks";
static readonly Dictionary<string,BuildTaskDatabase> default_factory = new Dictionary<string, BuildTaskDatabase> ();
public static BuildTaskDatabase GetDefaultTaskDatabase (Toolset toolset)
{
if (toolset == null)
throw new ArgumentNullException ("toolset");
BuildTaskDatabase defaults;
if (!default_factory.TryGetValue (toolset.ToolsVersion, out defaults)) {
defaults = new BuildTaskDatabase (toolset);
}
return defaults;
}
// for 'default' tasks.
BuildTaskDatabase (Toolset toolset)
{
ProjectRootElement root;
using (var xml = XmlReader.Create (Path.Combine (toolset.ToolsPath, default_tasks_file)))
root = ProjectRootElement.Create (xml);
LoadUsingTasks (null, root.UsingTasks);
}
public BuildTaskDatabase (IBuildEngine engine, ProjectInstance projectInstance)
{
this.engine = engine;
LoadUsingTasks (projectInstance, projectInstance.UsingTasks);
}
internal class TaskDescription
{
public TaskAssembly TaskAssembly { get; set; }
public string Name { get; set; }
public Type TaskFactoryType { get; set; }
public Type TaskType { get; set; }
public IDictionary<string, TaskPropertyInfo> TaskFactoryParameters { get; set; }
public string TaskBody { get; set; }
public bool IsMatch (string name)
{
int ridx = Name.LastIndexOf ('.');
int tidx = name.IndexOf ('.');
return string.Equals (Name, name, StringComparison.OrdinalIgnoreCase) ||
tidx < 0 && ridx > 0 && string.Equals (Name.Substring (ridx + 1), name, StringComparison.OrdinalIgnoreCase);
}
}
internal class TaskAssembly
{
public string AssemblyName { get; set; }
public string AssemblyFile { get; set; }
public Assembly LoadedAssembly { get; set; }
}
readonly IBuildEngine engine;
readonly List<TaskAssembly> assemblies = new List<TaskAssembly> ();
readonly List<TaskDescription> task_descs = new List<TaskDescription> ();
public List<TaskDescription> Tasks {
get { return task_descs; }
}
// FIXME: my guess is the tasks does not have to be loaded entirely but only requested tasks must be loaded at invocation time.
void LoadUsingTasks (ProjectInstance projectInstance, IEnumerable<ProjectUsingTaskElement> usingTasks)
{
Func<string,bool> cond = s => projectInstance != null ? projectInstance.EvaluateCondition (s) : Convert.ToBoolean (s);
Func<string,string> expand = s => projectInstance != null ? projectInstance.ExpandString (s) : s;
foreach (var ut in usingTasks) {
var aName = expand (ut.AssemblyName);
var aFile = expand (ut.AssemblyFile);
if (string.IsNullOrEmpty (aName) && string.IsNullOrEmpty (aFile)) {
var errorNoAssembly = string.Format ("Task '{0}' does not specify either of AssemblyName or AssemblyFile.", ut.TaskName);
engine.LogWarningEvent (new BuildWarningEventArgs (null, null, projectInstance.FullPath, ut.Location.Line, ut.Location.Column, 0, 0, errorNoAssembly, null, null));
continue;
}
var ta = assemblies.FirstOrDefault (a => a.AssemblyFile.Equals (aFile, StringComparison.OrdinalIgnoreCase) || a.AssemblyName.Equals (aName, StringComparison.OrdinalIgnoreCase));
if (ta == null) {
var path = Path.GetDirectoryName (string.IsNullOrEmpty (ut.Location.File) ? projectInstance.FullPath : ut.Location.File);
ta = new TaskAssembly () { AssemblyName = aName, AssemblyFile = aFile };
try {
ta.LoadedAssembly = !string.IsNullOrEmpty (ta.AssemblyName) ? Assembly.Load (ta.AssemblyName) : Assembly.LoadFile (Path.Combine (path, ta.AssemblyFile));
} catch {
var errorNotLoaded = string.Format ("For task '{0}' Specified assembly '{1}' was not found", ut.TaskName, string.IsNullOrEmpty (ta.AssemblyName) ? Path.Combine (path, ta.AssemblyFile) : ta.AssemblyName);
engine.LogWarningEvent (new BuildWarningEventArgs (null, null, projectInstance.FullPath, ut.Location.Line, ut.Location.Column, 0, 0, errorNotLoaded, null, null));
continue;
}
assemblies.Add (ta);
}
var pg = ut.ParameterGroup == null ? null : ut.ParameterGroup.Parameters.Select (p => new TaskPropertyInfo (p.Name, Type.GetType (p.ParameterType), cond (p.Output), cond (p.Required)))
.ToDictionary (p => p.Name);
Type type = null;
string error = null;
TaskDescription task = new TaskDescription () {
TaskAssembly = ta,
Name = ut.TaskName,
TaskFactoryParameters = pg,
TaskBody = ut.TaskBody != null && cond (ut.TaskBody.Condition) ? ut.TaskBody.TaskBody : null,
};
if (string.IsNullOrEmpty (ut.TaskFactory)) {
type = LoadTypeFrom (ta.LoadedAssembly, ut.TaskName, ut.TaskName);
if (type == null)
error = string.Format ("For task '{0}' Specified type '{1}' was not found in assembly '{2}'", ut.TaskName, ut.TaskName, ta.LoadedAssembly.FullName);
else
task.TaskType = type;
} else {
type = LoadTypeFrom (ta.LoadedAssembly, ut.TaskName, ut.TaskFactory);
if (type == null)
error = string.Format ("For task '{0}' Specified factory type '{1}' was not found in assembly '{2}'", ut.TaskName, ut.TaskFactory, ta.LoadedAssembly.FullName);
else
task.TaskFactoryType = type;
}
if (error != null)
engine.LogWarningEvent (new BuildWarningEventArgs (null, null, projectInstance.FullPath, ut.Location.Line, ut.Location.Column, 0, 0, error, null, null));
else
task_descs.Add (task);
}
}
Type LoadTypeFrom (Assembly a, string taskName, string possiblyShortTypeName)
{
Type type = a.GetType (possiblyShortTypeName, false, true);
if (possiblyShortTypeName.IndexOf ('.') < 0)
type = a.GetTypes ().FirstOrDefault (t => t.Name == possiblyShortTypeName);
return type;
}
}
}
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