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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.Collections;
using WixToolset.Harvesters.Extensibility;
using Wix = WixToolset.Harvesters.Serialize;
/// <summary>
/// The WiX Toolset mutator.
/// </summary>
internal class Mutator : IMutator
{
private SortedList extensions;
private string extensionArgument;
/// <summary>
/// Instantiate a new mutator.
/// </summary>
public Mutator()
{
this.extensions = new SortedList();
}
public IHarvesterCore Core { get; set; }
public string ExtensionArgument
{
get { return this.extensionArgument; }
set { this.extensionArgument = value; }
}
public void AddExtension(IMutatorExtension mutatorExtension)
{
this.extensions.Add(mutatorExtension.Sequence, mutatorExtension);
}
public bool Mutate(Wix.Wix wix)
{
bool encounteredError = false;
try
{
foreach (IMutatorExtension mutatorExtension in this.extensions.Values)
{
if (null == mutatorExtension.Core)
{
mutatorExtension.Core = this.Core;
}
mutatorExtension.Mutate(wix);
}
}
finally
{
encounteredError = this.Core.Messaging.EncounteredError;
}
// return the Wix document element only if mutation completed successfully
return !encounteredError;
}
public string Mutate(string wixString)
{
bool encounteredError = false;
try
{
foreach (IMutatorExtension mutatorExtension in this.extensions.Values)
{
if (null == mutatorExtension.Core)
{
mutatorExtension.Core = this.Core;
}
wixString = mutatorExtension.Mutate(wixString);
if (String.IsNullOrEmpty(wixString) || this.Core.Messaging.EncounteredError)
{
break;
}
}
}
finally
{
encounteredError = this.Core.Messaging.EncounteredError;
}
return encounteredError ? null : wixString;
}
}
}
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