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// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
namespace WixToolset.Harvesters
{
using System;
using System.IO;
using System.Xml;
using System.Xml.Xsl;
using WixToolset.Harvesters.Data;
using WixToolset.Harvesters.Extensibility;
public sealed class UtilTransformMutator : BaseMutatorExtension
{
private string transform;
private int transformSequence;
/// <summary>
/// Instantiate a new UtilTransformMutator.
/// </summary>
/// <param name="transform">Path to the XSL transform file.</param>
/// <param name="transformSequence">Order in which the transform should be applied,
/// relative to other transforms.</param>
public UtilTransformMutator(string transform, int transformSequence)
{
this.transform = transform;
this.transformSequence = transformSequence;
}
/// <summary>
/// Gets the sequence of the extension.
/// </summary>
/// <value>The sequence of the extension.</value>
public override int Sequence
{
get { return 3000 + this.transformSequence; }
}
/// <summary>
/// Mutate a WiX document as a string.
/// </summary>
/// <param name="wixString">The Wix document element as a string.</param>
/// <returns>The mutated Wix document as a string.</returns>
public override string Mutate(string wixString)
{
try
{
XslCompiledTransform xslt = new XslCompiledTransform();
xslt.Load(this.transform, XsltSettings.TrustedXslt, new XmlUrlResolver());
using (XmlTextReader xmlReader = new XmlTextReader(new StringReader(wixString)))
{
using (StringWriter stringWriter = new StringWriter())
{
XmlWriterSettings xmlSettings = new XmlWriterSettings();
xmlSettings.Indent = true;
xmlSettings.IndentChars = " ";
xmlSettings.OmitXmlDeclaration = true;
using (XmlWriter xmlWriter = XmlWriter.Create(stringWriter, xmlSettings))
{
xslt.Transform(xmlReader, xmlWriter);
}
wixString = stringWriter.ToString();
}
}
}
catch (Exception ex)
{
this.Core.Messaging.Write(HarvesterErrors.ErrorTransformingHarvestedWiX(this.transform, ex.Message));
return null;
}
return wixString;
}
}
}
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