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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.Core.TestPackage
{
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;
using System.Xml;
/// <summary>
/// Utility class to help compare XML in tests using string comparisons by using single quotes and stripping all namespaces.
/// </summary>
public static class XmlNodeExtensions
{
/// <summary>
/// Returns the node's outer XML using single quotes and stripping all namespaces.
/// </summary>
/// <param name="node"></param>
/// <param name="ignoredAttributesByElementName">Attributes for which the value should be set to '*'.</param>
/// <returns></returns>
public static string GetTestXml(this XmlNode node, Dictionary<string, List<string>> ignoredAttributesByElementName = null)
{
return node.OuterXml.GetTestXml(ignoredAttributesByElementName);
}
/// <summary>
/// Returns the XML using single quotes and stripping all namespaces.
/// </summary>
/// <param name="xml"></param>
/// <param name="ignoredAttributesByElementName">Attributes for which the value should be set to '*'.</param>
/// <returns></returns>
public static string GetTestXml(this string xml, Dictionary<string, List<string>> ignoredAttributesByElementName = null)
{
string formattedXml;
using (var sw = new StringWriter())
using (var writer = new TestXmlWriter(sw))
{
var doc = new XmlDocument();
doc.LoadXml(xml);
if (ignoredAttributesByElementName != null)
{
HandleIgnoredAttributes(doc, ignoredAttributesByElementName);
}
doc.Save(writer);
formattedXml = sw.ToString();
}
return Regex.Replace(formattedXml, " xmlns(:[^=]+)?='[^']*'", "");
}
private static void HandleIgnoredAttributes(XmlNode node, Dictionary<string, List<string>> ignoredAttributesByElementName)
{
if (node.Attributes != null && ignoredAttributesByElementName.TryGetValue(node.LocalName, out var ignoredAttributes))
{
foreach (var ignoredAttribute in ignoredAttributes)
{
var attribute = node.Attributes[ignoredAttribute];
if (attribute != null)
{
attribute.Value = "*";
}
}
}
if (node.ChildNodes != null)
{
foreach (XmlNode childNode in node.ChildNodes)
{
HandleIgnoredAttributes(childNode, ignoredAttributesByElementName);
}
}
}
private class TestXmlWriter : XmlTextWriter
{
public TestXmlWriter(TextWriter w)
: base(w)
{
this.QuoteChar = '\'';
}
public override void WriteStartDocument()
{
//OmitXmlDeclaration
}
}
}
}
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