dotnet-installer/build_projects/dotnet-cli-build/ZipFileExtractToDirectory.cs
2017-03-02 20:35:20 -08:00

85 lines
3.6 KiB
C#

// 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.IO;
using System.IO.Compression;
namespace Microsoft.DotNet.Build.Tasks
{
public sealed class ZipFileExtractToDirectory : Task
{
/// <summary>
/// The path to the directory to be archived.
/// </summary>
[Required]
public string SourceArchive { get; set; }
/// <summary>
/// The path of the archive to be created.
/// </summary>
[Required]
public string DestinationDirectory { get; set; }
/// <summary>
/// Indicates if the destination directory should be cleaned if it already exists.
/// </summary>
public bool OverwriteDestination { get; set; }
public override bool Execute()
{
try
{
if (Directory.Exists(DestinationDirectory))
{
if (OverwriteDestination == true)
{
Log.LogMessage(MessageImportance.Low, "'{0}' already exists, trying to delete before unzipping...", DestinationDirectory);
Directory.Delete(DestinationDirectory, recursive: true);
}
}
Log.LogMessage(MessageImportance.High, "Decompressing '{0}' into '{1}'...", SourceArchive, DestinationDirectory);
if (!Directory.Exists(Path.GetDirectoryName(DestinationDirectory)))
Directory.CreateDirectory(Path.GetDirectoryName(DestinationDirectory));
// match tar default behavior to overwrite by default
// Replace this code with ZipFile.ExtractToDirectory when https://github.com/dotnet/corefx/pull/14806 is available
using (ZipArchive archive = ZipFile.Open(SourceArchive, ZipArchiveMode.Read))
{
DirectoryInfo di = Directory.CreateDirectory(DestinationDirectory);
string destinationDirectoryFullPath = di.FullName;
foreach (ZipArchiveEntry entry in archive.Entries)
{
string fileDestinationPath = Path.GetFullPath(Path.Combine(destinationDirectoryFullPath, entry.FullName));
if (Path.GetFileName(fileDestinationPath).Length == 0)
{
// If it is a directory:
Directory.CreateDirectory(fileDestinationPath);
}
else
{
// If it is a file:
// Create containing directory:
Directory.CreateDirectory(Path.GetDirectoryName(fileDestinationPath));
entry.ExtractToFile(fileDestinationPath, overwrite: true);
}
}
}
}
catch (Exception e)
{
// We have 2 log calls because we want a nice error message but we also want to capture the callstack in the log.
Log.LogError("An exception has occured while trying to decompress '{0}' into '{1}'.", SourceArchive, DestinationDirectory);
Log.LogMessage(MessageImportance.Low, e.ToString());
return false;
}
return true;
}
}
}