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#region Copyright notice and license
// Copyright 2018 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#endregion
using System.Collections.Generic;
using Microsoft.Build.Framework;
using Microsoft.Build.Utilities;
namespace Grpc.Tools
{
public class ProtoReadDependencies : Task
{
/// <summary>
/// The collection is used to collect possible additional dependencies
/// of proto files cached under ProtoDepDir.
/// </summary>
[Required]
public ITaskItem[] ProtoBuf { get; set; }
/// <summary>
/// Directory where protoc dependency files are cached.
/// </summary>
[Required]
public string ProtoDepDir { get; set; }
/// <summary>
/// Additional items that a proto file depends on. This list may include
/// extra dependencies; we do our best to include as few extra positives
/// as reasonable to avoid missing any. The collection item is the
/// dependency, and its Source metadatum is the dependent proto file, like
/// <ItemName Include="/usr/include/proto/wrapper.proto"
/// Source="my_proto.proto" />
/// </summary>
[Output]
public ITaskItem[] Dependencies { get; private set; }
public override bool Execute()
{
// Read dependency files, where available. There might be none,
// just use a best effort.
if (ProtoDepDir != null)
{
var dependencies = new List<ITaskItem>();
foreach (var proto in ProtoBuf)
{
string[] deps = DepFileUtil.ReadDependencyInputs(ProtoDepDir, proto.ItemSpec, Log);
foreach (string dep in deps)
{
var ti = new TaskItem(dep);
ti.SetMetadata(Metadata.Source, proto.ItemSpec);
dependencies.Add(ti);
}
}
Dependencies = dependencies.ToArray();
}
else
{
Dependencies = new ITaskItem[0];
}
return !Log.HasLoggedErrors;
}
};
}
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