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** Copyright (C) 2021 The Qt Company Ltd.
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** This file is part of the Qt VS Tools.
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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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****************************************************************************/
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#region Task TaskName="GetItemHash"
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#region Comment
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/////////////////////////////////////////////////////////////////////////////////////////////////
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/// TASK GetItemHash
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/////////////////////////////////////////////////////////////////////////////////////////////////
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// Calculate an hash code (Deflate + Base64) for an item, given a list of metadata to use as key
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// Parameters:
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// in ITaskItem Item: item for which the hash will be calculated
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// in string[] Keys: list of names of the metadata to use as item key
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// out string Hash: hash code (Base64 representation of Deflate'd UTF-8 item key)
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#endregion
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#region Using
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using System;
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using System.Linq;
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using System.Text;
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using System.IO;
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using System.IO.Compression;
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#endregion
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namespace QtVsTools.QtMsBuild.Tasks
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{
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public static class GetItemHash
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{
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public static bool Execute(
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#region Parameters
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Microsoft.Build.Framework.ITaskItem Item,
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System.String[] Keys,
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out System.String Hash)
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#endregion
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{
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#region Code
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var data = Encoding.UTF8.GetBytes(string.Concat(Keys.OrderBy(x => x)
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.Select(x => string.Format("[{0}={1}]", x, Item.GetMetadata(x))))
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.ToUpper());
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using (var dataZipped = new MemoryStream()) {
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using (var zip = new DeflateStream(dataZipped, CompressionLevel.Fastest))
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zip.Write(data, 0, data.Length);
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Hash = Convert.ToBase64String(dataZipped.ToArray());
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}
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#endregion
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return true;
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}
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}
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}
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#endregion
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