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/***************************************************************************************************
Copyright (C) 2024 The Qt Company Ltd.
SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
***************************************************************************************************/
#region Task TaskName="GetItemHash"
#region Comment
/////////////////////////////////////////////////////////////////////////////////////////////////
/// TASK GetItemHash
/////////////////////////////////////////////////////////////////////////////////////////////////
// Calculate an hash code (Deflate + Base64) for an item, given a list of metadata to use as key
// Parameters:
// in ITaskItem Item: item for which the hash will be calculated
// in string[] Keys: list of names of the metadata to use as item key
// out string Hash: hash code (Base64 representation of Deflate'd UTF-8 item key)
#endregion
#region Using
using System;
using System.Linq;
using System.Text;
using System.IO;
using System.IO.Compression;
#endregion
namespace QtVsTools.QtMsBuild.Tasks
{
public static class GetItemHash
{
public static bool Execute(
#region Parameters
Microsoft.Build.Framework.ITaskItem Item,
System.String[] Keys,
out System.String Hash)
#endregion
{
#region Code
var data = Encoding.UTF8.GetBytes(string.Concat(Keys.OrderBy(x => x)
.Select(x => string.Format("[{0}={1}]", x, Item.GetMetadata(x))))
.ToUpper());
using (var dataZipped = new MemoryStream()) {
using (var zip = new DeflateStream(dataZipped, CompressionLevel.Fastest))
zip.Write(data, 0, data.Length);
Hash = Convert.ToBase64String(dataZipped.ToArray());
}
#endregion
return true;
}
}
}
#endregion
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