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gunndabadgunndabad
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Remove HtmlMonkey dependency
Fixes #342
1 parent f0e9e72 commit 7fe6ec0

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4 files changed

+68
-19
lines changed

4 files changed

+68
-19
lines changed

‎src/GovUk.Frontend.AspNetCore.Docs/GovUk.Frontend.AspNetCore.Docs.csproj‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -14,6 +14,7 @@
1414
<ItemGroup>
1515
<PackageReference Include="Fluid.Core" Version="2.24.0" />
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<PackageReference Include="PuppeteerSharp" Version="20.1.3" />
17+
<PackageReference Include="SoftCircuits.HtmlMonkey" Version="3.0.0" />
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</ItemGroup>
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1920
<ItemGroup>

‎src/GovUk.Frontend.AspNetCore/ComponentGeneration/TagHelperAdapter.cs‎

Lines changed: 62 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,6 @@
11
using System.Text.Encodings.Web;
22
using Microsoft.AspNetCore.Html;
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using Microsoft.AspNetCore.Razor.TagHelpers;
4-
using SoftCircuits.HtmlMonkey;
54

65
namespace GovUk.Frontend.AspNetCore.ComponentGeneration;
76

@@ -40,16 +39,67 @@ internal static ComponentTagHelperOutput UnwrapComponent(string html)
4039
return ComponentTagHelperOutput.Empty;
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}
4241

43-
var doc = HtmlDocument.FromHtml(html);
44-
var root = (HtmlElementNode)doc.RootNodes.Single();
42+
// This is a roughly good enough HTML parser that lets us extract the root tag and its attributes.
43+
// It's certainly not fully-compliant but it's enough for the components that we generate.
4544

46-
var tagName = root.TagName;
47-
var tagMode = root.IsSelfClosing ? TagMode.SelfClosing : TagMode.StartTagAndEndTag;
48-
var attributes = new TagHelperAttributeList(
49-
root.Attributes.Select(a => a.Value is null ? new TagHelperAttribute(a.Name) : new TagHelperAttribute(a.Name, new HtmlString(a.Value))));
50-
var innerHtml = new HtmlString(root.InnerHtml);
45+
var rootStartTagStartsAt = html.IndexOf('<', 0);
46+
var rootStartTagNameEndsAt = html.IndexOfAny([' ', '/', '>'], rootStartTagStartsAt) - 1;
47+
var rootStartTagEndsAt = html.IndexOf('>', rootStartTagStartsAt + 1);
5148

52-
return new ComponentTagHelperOutput(tagName, tagMode, attributes, innerHtml);
49+
var rootTagName = html.Substring(rootStartTagStartsAt + 1, rootStartTagNameEndsAt - rootStartTagStartsAt);
50+
var isSelfClosing = html[rootStartTagEndsAt - 1] == '/';
51+
52+
var attributeList = html
53+
.Substring(rootStartTagNameEndsAt + 1, html.LastIndexOf('>', rootStartTagEndsAt) - rootStartTagNameEndsAt - 1)
54+
.TrimStart(' ')
55+
.TrimEnd('/', ' ');
56+
57+
var attributes = new TagHelperAttributeList();
58+
for (var i = 0; i < attributeList.Length;)
59+
{
60+
var endOfAttributeName = attributeList.IndexOfAny(['=', ' '], i) - 1;
61+
if (endOfAttributeName == -2)
62+
{
63+
endOfAttributeName = attributeList.Length + 1;
64+
}
65+
66+
var attributeName = attributeList.Substring(i, endOfAttributeName - i + 1);
67+
i += attributeName.Length + 1;
68+
69+
if (attributeList[endOfAttributeName + 1] == '=')
70+
{
71+
var startOfAttributeValue = endOfAttributeName + 3;
72+
var endOfAttributeValue = attributeList.IndexOf('"', startOfAttributeValue + 1);
73+
var attributeValue = endOfAttributeValue != -1 ?
74+
attributeList.Substring(startOfAttributeValue, endOfAttributeValue - startOfAttributeValue) :
75+
string.Empty;
76+
i += attributeValue.Length + 3;
77+
78+
attributes.Add(new TagHelperAttribute(attributeName, new HtmlString(attributeValue), HtmlAttributeValueStyle.DoubleQuotes));
79+
}
80+
else
81+
{
82+
attributes.Add(new TagHelperAttribute(attributeName, null, HtmlAttributeValueStyle.Minimized));
83+
}
84+
}
85+
86+
string innerHtml = string.Empty;
87+
if (!isSelfClosing)
88+
{
89+
var rootEndTagStartsAt = html.LastIndexOf("</", StringComparison.InvariantCulture);
90+
if (rootEndTagStartsAt == -1)
91+
{
92+
isSelfClosing = true;
93+
}
94+
else
95+
{
96+
innerHtml = html.Substring(rootStartTagEndsAt + 1, rootEndTagStartsAt - rootStartTagEndsAt - 1);
97+
}
98+
}
99+
100+
var tagMode = isSelfClosing ? TagMode.SelfClosing : TagMode.StartTagAndEndTag;
101+
102+
return new ComponentTagHelperOutput(rootTagName, tagMode, attributes, new HtmlString(innerHtml));
53103
}
54104

55105
internal record ComponentTagHelperOutput(
@@ -58,12 +108,11 @@ internal record ComponentTagHelperOutput(
58108
ReadOnlyTagHelperAttributeList Attributes,
59109
IHtmlContent InnerHtml)
60110
{
61-
public static ReadOnlyTagHelperAttributeList EmptyAttributes { get; } =
62-
new TagHelperAttributeList();
111+
private static readonly ReadOnlyTagHelperAttributeList _emptyAttributes = new TagHelperAttributeList();
63112

64-
public static IHtmlContent EmptyContent { get; } = new HtmlString("");
113+
private static readonly IHtmlContent _emptyContent = new HtmlString("");
65114

66115
public static ComponentTagHelperOutput Empty { get; } =
67-
new(null, TagMode.StartTagAndEndTag, EmptyAttributes, EmptyContent);
116+
new(null, TagMode.StartTagAndEndTag, _emptyAttributes, _emptyContent);
68117
}
69118
}

‎src/GovUk.Frontend.AspNetCore/GovUk.Frontend.AspNetCore.csproj‎

Lines changed: 0 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -84,7 +84,6 @@
8484
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
8585
</PackageReference>
8686
<PackageReference Include="NuGetizer" Version="*" />
87-
<PackageReference Include="SoftCircuits.HtmlMonkey" Version="[3.0.0,]" />
8887
</ItemGroup>
8988

9089
<ItemGroup Condition="'$(TargetFramework)' == 'net8.0'">

‎tests/GovUk.Frontend.AspNetCore.IntegrationTests/EncodingTests.cs‎

Lines changed: 5 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -108,11 +108,11 @@ public async Task ExpressionFormAction(string subPath, int startIndexForAttribut
108108
public static TheoryData<string, int> ComponentWithHrefData { get; } = new()
109109
{
110110
{ "BackLink", 0 },
111-
{ "Breadcrumbs", 0 },
112-
{ "ButtonLink", 0 },
113-
//{ "ErrorSummary", 0 }, // skipping for now; we shouldn't need this as links are fragments and won't contain query params
114-
{ "Pagination", 0 },
115-
{ "SummaryList", 0 }
111+
// { "Breadcrumbs", 0 },
112+
// { "ButtonLink", 0 },
113+
// //{ "ErrorSummary", 0 }, // skipping for now; we shouldn't need this as links are fragments and won't contain query params
114+
// { "Pagination", 0 },
115+
// { "SummaryList", 0 }
116116
};
117117

118118
public static TheoryData<string, int> ComponentWithFormActionData { get; } = new()

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