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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using Microsoft.Build.Framework;
using Microsoft.Build.Utilities;
using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection.Metadata;
using System.Reflection.PortableExecutable;
namespace Build.Tasks
{
public class ComputeManagedAssemblies : Task
{
[Required]
public ITaskItem[] Assemblies
{
get;
set;
}
/// <summary>
/// The CoreRT-specific System.Private.* assemblies that must be used instead of the netcoreapp2.1 versions.
/// </summary>
[Required]
public ITaskItem[] SdkAssemblies
{
get;
set;
}
/// <summary>
/// The set of AOT-specific framework assemblies we currently need to use which will replace the same-named ones
/// in the app's closure.
/// </summary>
[Required]
public ITaskItem[] FrameworkAssemblies
{
get;
set;
}
/// <summary>
/// The native apphost (whose name ends up colliding with the CoreRT output binary)
/// </summary>
[Required]
public string DotNetAppHostExecutableName
{
get;
set;
}
/// <summary>
/// The CoreCLR dotnet host fixer library that can be skipped during publish
/// </summary>
[Required]
public string DotNetHostFxrLibraryName
{
get;
set;
}
/// <summary>
/// The CoreCLR dotnet host policy library that can be skipped during publish
/// </summary>
[Required]
public string DotNetHostPolicyLibraryName
{
get;
set;
}
[Output]
public ITaskItem[] ManagedAssemblies
{
get;
set;
}
[Output]
public ITaskItem[] AssembliesToSkipPublish
{
get;
set;
}
public override bool Execute()
{
var list = new List<ITaskItem>();
var assembliesToSkipPublish = new List<ITaskItem>();
var coreRTFrameworkAssembliesToUse = new HashSet<string>();
foreach (ITaskItem taskItem in SdkAssemblies)
{
coreRTFrameworkAssembliesToUse.Add(Path.GetFileName(taskItem.ItemSpec));
}
foreach (ITaskItem taskItem in FrameworkAssemblies)
{
coreRTFrameworkAssembliesToUse.Add(Path.GetFileName(taskItem.ItemSpec));
}
foreach (ITaskItem taskItem in Assemblies)
{
// In the case of disk-based assemblies, this holds the file path
string itemSpec = taskItem.ItemSpec;
// Skip the native apphost (whose name ends up colliding with the CoreRT output binary) and supporting libraries
if (itemSpec.EndsWith(DotNetAppHostExecutableName, StringComparison.OrdinalIgnoreCase) || itemSpec.Contains(DotNetHostFxrLibraryName) || itemSpec.Contains(DotNetHostPolicyLibraryName))
{
assembliesToSkipPublish.Add(taskItem);
continue;
}
// Prototype aid - remove the native CoreCLR runtime pieces from the publish folder
if (itemSpec.Contains("microsoft.netcore.app") && (itemSpec.Contains("\\native\\") || itemSpec.Contains("/native/")))
{
assembliesToSkipPublish.Add(taskItem);
continue;
}
// Remove any assemblies whose implementation we want to come from CoreRT's package.
// Currently that's System.Private.* SDK assemblies and a bunch of framework assemblies.
if (coreRTFrameworkAssembliesToUse.Contains(Path.GetFileName(itemSpec)))
{
assembliesToSkipPublish.Add(taskItem);
continue;
}
try
{
using (FileStream moduleStream = File.OpenRead(itemSpec))
using (var module = new PEReader(moduleStream))
{
if (module.HasMetadata)
{
MetadataReader moduleMetadataReader = module.GetMetadataReader();
if (moduleMetadataReader.IsAssembly)
{
string culture = moduleMetadataReader.GetString(moduleMetadataReader.GetAssemblyDefinition().Culture);
if (culture == "" || culture.Equals("neutral", StringComparison.OrdinalIgnoreCase))
{
// CoreRT doesn't consume resource assemblies yet so skip them
assembliesToSkipPublish.Add(taskItem);
list.Add(taskItem);
}
}
}
}
}
catch (BadImageFormatException)
{
}
}
ManagedAssemblies = list.ToArray();
AssembliesToSkipPublish = assembliesToSkipPublish.ToArray();
return true;
}
}
}
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