feat: initial release

2021-09-07 00:15:45 -05:00 · 2021-09-07 00:15:45 -05:00 · 78054ee2a7
commit 78054ee2a7
164 changed files with 22055 additions and 0 deletions
--- a/.editorconfig
+++ b/.editorconfig
@ -0,0 +1,122 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+root = true
+
+[*]
+charset=utf-8
+end_of_line = lf
+insert_final_newline=true
+indent_style=space
+indent_size=4
+
+# Microsoft .NET properties
+csharp_new_line_before_members_in_object_initializers=false
+csharp_preferred_modifier_order=public, private, protected, internal, new, abstract, virtual, sealed, override, static, readonly, extern, unsafe, volatile, async:suggestion
+csharp_space_after_cast=false
+csharp_style_var_elsewhere=false:hint
+csharp_style_var_for_built_in_types=false:hint
+csharp_style_var_when_type_is_apparent=true:hint
+csharp_preserve_single_line_statements=false
+csharp_preserve_single_line_blocks=true
+dotnet_style_predefined_type_for_locals_parameters_members=true:hint
+dotnet_style_predefined_type_for_member_access=true:hint
+dotnet_style_qualification_for_event=true:hint
+dotnet_style_qualification_for_field=true:hint
+dotnet_style_qualification_for_method=true:hint
+dotnet_style_qualification_for_property=true:hint
+dotnet_style_require_accessibility_modifiers=for_non_interface_members:hint
+
+# ReSharper properties
+resharper_alignment_tab_fill_style=optimal_fill
+resharper_apply_on_completion=true
+resharper_blank_lines_after_control_transfer_statements=1
+resharper_blank_lines_around_single_line_auto_property=1
+resharper_blank_lines_around_single_line_property=1
+resharper_blank_lines_before_single_line_comment=1
+resharper_blank_lines_between_using_groups=1
+resharper_braces_for_for=required
+resharper_braces_for_foreach=required
+resharper_braces_for_ifelse=required
+resharper_braces_for_while=required
+resharper_can_use_global_alias=false
+resharper_csharp_blank_lines_around_single_line_field=1
+resharper_csharp_blank_lines_around_single_line_invocable=1
+resharper_csharp_indent_style=tab
+resharper_csharp_insert_final_newline=true
+resharper_csharp_keep_blank_lines_in_code=1
+resharper_csharp_keep_blank_lines_in_declarations=1
+resharper_csharp_new_line_before_while=true
+resharper_csharp_use_indent_from_vs=false
+resharper_csharp_wrap_arguments_style=chop_if_long
+resharper_csharp_wrap_extends_list_style=chop_if_long
+resharper_csharp_wrap_parameters_style=chop_if_long
+resharper_css_insert_final_newline=false
+resharper_enforce_line_ending_style=true
+resharper_html_insert_final_newline=false
+resharper_indent_nested_fixed_stmt=true
+resharper_js_indent_style=tab
+resharper_js_insert_final_newline=true
+resharper_js_keep_blank_lines_in_code=1
+resharper_js_stick_comment=false
+resharper_js_use_indent_from_vs=false
+resharper_js_wrap_before_binary_opsign=true
+resharper_js_wrap_chained_method_calls=chop_if_long
+resharper_keep_blank_lines_between_declarations=1
+resharper_min_blank_lines_after_imports=1
+resharper_place_attribute_on_same_line=False
+resharper_place_constructor_initializer_on_same_line=false
+resharper_place_type_constraints_on_same_line=false
+resharper_protobuf_insert_final_newline=false
+resharper_qualified_using_at_nested_scope=true
+resharper_resx_insert_final_newline=false
+resharper_space_within_single_line_array_initializer_braces=true
+resharper_use_indents_from_main_language_in_file=false
+resharper_vb_insert_final_newline=false
+resharper_wrap_after_declaration_lpar=true
+resharper_wrap_after_invocation_lpar=true
+resharper_wrap_before_extends_colon=true
+resharper_wrap_before_first_type_parameter_constraint=true
+resharper_wrap_before_type_parameter_langle=true
+resharper_xmldoc_indent_child_elements=ZeroIndent
+resharper_xmldoc_indent_text=ZeroIndent
+resharper_xmldoc_insert_final_newline=false
+resharper_xml_insert_final_newline=false
+
+# ReSharper inspection severities
+resharper_check_namespace_highlighting=none
+resharper_convert_to_auto_property_highlighting=none
+resharper_localizable_element_highlighting=none
+resharper_redundant_comma_in_attribute_list_highlighting=none
+resharper_redundant_comma_in_enum_declaration_highlighting=none
+resharper_redundant_comma_in_initializer_highlighting=none
+resharper_string_compare_to_is_culture_specific_highlighting=none
+resharper_string_index_of_is_culture_specific_1_highlighting=none
+resharper_use_null_propagation_highlighting=none
+resharper_use_object_or_collection_initializer_highlighting=hint
+resharper_use_string_interpolation_highlighting=hint
+
+# Matches the exact files either package.json or .travis.yml
+[{package.json,.travis.yml}]
+indent_style=space
+indent_size=2
+tab_width=2
+
+[*.{cs,js,json,jsx,proto,resjson,ts,tsx}]
+indent_style=space
+indent_size=space
+tab_width=4
+
+[*.{asax,ascx,aspx,cshtml,css,htm,html,master,razor,skin,vb,xaml,xamlx,xoml}]
+indent_style=space
+indent_size=4
+tab_width=4
+
+[*.{appxmanifest,build,config,csproj,dbml,discomap,dtd,jsproj,lsproj,njsproj,nuspec,proj,props,resw,resx,StyleCop,targets,tasks,vbproj,xml,xsd}]
+indent_style=space
+indent_size=2
+tab_width=2
+
+[*.proto]
+indent_style=space
+indent_size=2
+tab_width=2
--- a/.envrc
+++ b/.envrc
@ -0,0 +1 @@
+use asdf
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,13 @@
+launchSettings.json
+
+*~
+*.user
+Directory.Build.props
+
+obj/
+[Bb]in/
+.vs/
+.vscode/
+.idea/
+_ReSharper.Caches/
+node_modules/
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@ -0,0 +1,51 @@
+stages:
+    - build
+
+default:
+    before_script:
+        - curl -sL https://deb.nodesource.com/setup_15.x | bash -
+        - apt-get install -y nodejs
+
+build:
+    image: mcr.microsoft.com/dotnet/sdk:5.0
+    stage: build
+    script:
+        # Set up the environment.
+        - npx npm install --ci
+        - npx commitlint-gitlab-ci -x @commitlint/config-conventional
+
+        # Build and test everything.
+        - dotnet restore
+        - dotnet build
+        #- 'dotnet test --test-adapter-path:. --logger:"junit;LogFilePath=../artifacts/{assembly}-test-result.xml;MethodFormat=Default;FailureBodyFormat=Verbose" --collect:"XPlat Code Coverage"'
+
+        # Summarize the output for Gitlab CI reporting.
+        #- dotnet new tool-manifest
+        #- dotnet tool install dotnet-reportgenerator-globaltool
+        #- dotnet tool run reportgenerator -reports:src/*/TestResults/*/coverage.cobertura.xml -targetdir:./coverage "-reporttypes:Cobertura;TextSummary"
+        #- grep "Line coverage" coverage/Summary.txt
+
+        # Perform the release.
+        - npx semantic-release
+
+    rules:
+        - if: '$CI_COMMIT_TITLE =~ /^chore\(release\)/'
+          when: never
+        - if: '$CI_COMMIT_TAG'
+          when: never
+        - if: '$CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH'
+          when: never
+        - when: on_success
+
+    artifacts:
+        when: always
+        paths:
+            - ./**/*test-result.xml
+            - ./coverage/Cobertura.xml
+            - ./coverage/Summary.*
+            - ./**/*.nupkg
+        reports:
+            junit:
+                - ./**/*test-result.xml
+            cobertura:
+                - ./coverage/Cobertura.xml
--- a/.husky/commit-msg
+++ b/.husky/commit-msg
@ -0,0 +1,4 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+npx --no-install commitlint --edit $1
--- a/.tool-versions
+++ b/.tool-versions
@ -0,0 +1,3 @@
+dotnet-core 5.0.100
+yarn 1.22.10
+nodejs 15.0.1
--- a/LICENSE.txt
+++ b/LICENSE.txt
@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) Moonfire Games
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/Nitride.sln
+++ b/Nitride.sln
@ -0,0 +1,264 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.26124.0
+MinimumVisualStudioVersion = 15.0.26124.0
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{570184FD-ECE4-4EC8-86E1-C1265E17D647}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Calendar", "src\Nitride.Calendar\Nitride.Calendar.csproj", "{D480943C-764D-4A8A-B546-642ED10586BB}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Feeds", "src\Nitride.Feeds\Nitride.Feeds.csproj", "{1204DECC-654A-433A-BF82-53F98AB24DCF}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Gemtext", "src\Nitride.Gemtext\Nitride.Gemtext.csproj", "{23C7CBF7-9624-457A-8296-C03F75BC9BC6}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Generators", "src\Nitride.Generators\Nitride.Generators.csproj", "{4ACB11B7-1EEB-48E7-845A-528770839125}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Handlebars", "src\Nitride.Handlebars\Nitride.Handlebars.csproj", "{56E595A6-7880-416E-B328-93B9617F92A6}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Html", "src\Nitride.Html\Nitride.Html.csproj", "{3F9292D3-DA50-4DBA-AE90-E33E462470A1}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.IO", "src\Nitride.IO\Nitride.IO.csproj", "{534BF940-25B2-4948-A101-7890CC9C4EA5}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.IO.Tests", "src\Nitride.IO.Tests\Nitride.IO.Tests.csproj", "{57F4C4C3-A2C9-4D6C-AA51-9A7EC926918D}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Javascript", "src\Nitride.Javascript\Nitride.Javascript.csproj", "{285A855E-B2FC-4770-AFD9-4CC67AD3C83C}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Markdown", "src\Nitride.Markdown\Nitride.Markdown.csproj", "{41FF3823-7008-43B1-AD6A-92437E0600B7}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride", "src\Nitride\Nitride.csproj", "{757BA115-3465-46C5-ADDB-7B96D6900F33}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Slugs", "src\Nitride.Slugs\Nitride.Slugs.csproj", "{17BF2A03-2C1D-4F75-9C18-B4341FAAF1A5}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Temporal", "src\Nitride.Temporal\Nitride.Temporal.csproj", "{FEFFA469-245E-45A7-A094-3F0E89CEF3A9}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Tests", "src\Nitride.Tests\Nitride.Tests.csproj", "{A0EED899-35C7-4C1C-8BBF-F7FD2F281839}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Yaml", "src\Nitride.Yaml\Nitride.Yaml.csproj", "{1A5B4B4D-CF32-4458-8F2C-83A2AE494837}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nitride.Yaml.Tests", "src\Nitride.Yaml.Tests\Nitride.Yaml.Tests.csproj", "{C8CD60C2-2A26-48AE-848D-A71AEE2267C9}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|Any CPU = Release|Any CPU
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D480943C-764D-4A8A-B546-642ED10586BB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
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+	EndGlobalSection
+EndGlobal
--- a/Nitride.sln.DotSettings
+++ b/Nitride.sln.DotSettings
@ -0,0 +1,3 @@
+<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Gemtext/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Markdig/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>
--- a/Nitride.sln.Dotsettings
+++ b/Nitride.sln.Dotsettings
--- a/NuGet.Config
+++ b/NuGet.Config
@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
+    <add key="mfgames" value="https://www.myget.org/F/mfgames/api/v3/index.json" protocolVersion="3" />
+  </packageSources>
+</configuration>
--- a/README.md
+++ b/README.md
@ -0,0 +1,4 @@
+Nitride CIL
+===========
+
+A static site generator based on the [Gallium ECS](https://gitlab.com/mfgames-cil/gallium-cil/).
--- a/commitlint.config.js
+++ b/commitlint.config.js
@ -0,0 +1,3 @@
+module.exports = {
+    extends: ["@commitlint/config-conventional"],
+};
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@ -0,0 +1,21 @@
+{
+  "name": "nitride-cil",
+  "version": "1.0.0",
+  "private": true,
+  "scripts": {
+    "prepare": "husky install"
+  },
+  "devDependencies": {
+    "@commitlint/cli": "^13.1.0",
+    "@commitlint/config-conventional": "^13.1.0",
+    "@semantic-release/changelog": "^5.0.1",
+    "@semantic-release/git": "^9.0.0",
+    "@semantic-release/gitlab": "^6.2.2",
+    "@semantic-release/npm": "^7.1.3",
+    "commitlint-gitlab-ci": "^0.0.4",
+    "husky": "^7.0.2",
+    "semantic-release": "^17.4.7",
+    "semantic-release-dotnet": "^1.0.0",
+    "semantic-release-nuget": "^1.1.0"
+  }
+}
--- a/release.config.js
+++ b/release.config.js
@ -0,0 +1,20 @@
+module.exports = {
+  branches: ["main"],
+  message: "chore(release): v${nextRelease.version}\n\n${nextRelease.notes}",
+  plugins: [
+    "@semantic-release/commit-analyzer",
+    "@semantic-release/release-notes-generator",
+    "@semantic-release/npm",
+    "semantic-release-dotnet",
+    [
+      "semantic-release-nuget",
+      {
+        packArguments: ["--include-symbols", "--include-source"],
+        pushFiles: ["src/*/bin/Debug/*.nupkg"],
+      },
+    ],
+    "@semantic-release/changelog",
+    "@semantic-release/git",
+    "@semantic-release/gitlab",
+  ],
+};
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@ -0,0 +1,14 @@
+<Project>
+
+    <PropertyGroup>
+        <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+        <Authors>Dylan Moonfire</Authors>
+        <Company>Moonfire Games</Company>
+        <RepositoryUrl>https://gitlab.com/mfgames-cil/nitride-cil</RepositoryUrl>
+        <RepositoryType>Git</RepositoryType>
+        <PackageTags>nitride</PackageTags>
+        <PackageProjectUrl>https://gitlab.com/mfgames-cil/nitride-cil</PackageProjectUrl>
+        <PackageLicense>MIT</PackageLicense>
+    </PropertyGroup>
+
+</Project>
--- a/src/Nitride.Calendar/CreateCalender.cs
+++ b/src/Nitride.Calendar/CreateCalender.cs
@ -0,0 +1,104 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Gallium;
+using Ical.Net.CalendarComponents;
+using Ical.Net.DataTypes;
+using Ical.Net.Serialization;
+using Nitride.Contents;
+using Nitride.Temporal;
+using NodaTime;
+using Zio;
+
+namespace Nitride.Calendar
+{
+    /// <summary>
+    /// Creates an iCalendar file from all the entities passed into the method
+    /// that have a NodaTime.Instant component. This will write both past and
+    /// future events.
+    /// </summary>
+    [WithProperties]
+    public partial class CreateCalender : NitrideOperationBase
+    {
+        private readonly NitrideClock clock;
+
+        public CreateCalender(NitrideClock clock)
+        {
+            this.clock = clock;
+        }
+
+        /// <summary>
+        /// Gets or sets a callback to get the summary of the event representing
+        /// the entity.
+        /// </summary>
+        public Func<Entity, string>? GetEventSummary { get; set; }
+
+        /// <summary>
+        /// Gets or sets a callback to get the optional URL of an event for
+        /// the entity.
+        /// </summary>
+        public Func<Entity, Uri?>? GetEventUrl { get; set; }
+
+        /// <summary>
+        /// Gets or sets the file system path for the resulting calendar.
+        /// </summary>
+        public UPath? Path { get; set; }
+
+        /// <inheritdoc />
+        public override IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            this.CheckNotNull(x => x.Path);
+            this.CheckNotNull(x => x.GetEventSummary);
+
+            IEnumerable<Entity> output = input
+                .ForEntities<Instant>(this.CreateCalendarEntity);
+
+            return output;
+        }
+
+        private IEnumerable<Entity> CreateCalendarEntity(
+            IEnumerable<Entity> entities)
+        {
+            // Create the calendar in the same time zone as the rest of the system.
+            var calendar = new Ical.Net.Calendar();
+
+            calendar.TimeZones.Add(new VTimeZone(this.clock.DateTimeZone.Id));
+
+            // Go through the events and add all of them.
+            List<Entity> input = entities.ToList();
+            IEnumerable<CalendarEvent> events =
+                input.Select(this.CreateCalendarEvent);
+
+            calendar.Events.AddRange(events);
+
+            // Create the iCalendar file.
+            var serializer = new CalendarSerializer();
+            string serializedCalendar = serializer.SerializeToString(calendar);
+
+            // Create the calendar entity and populate everything.
+            Entity calendarEntity = new Entity()
+                .Set(IsCalendar.Instance)
+                .Set(this.Path!.Value)
+                .SetTextContent(serializedCalendar);
+
+            // Return the results along with the new calendar.
+            return input.Union(new[] { calendarEntity });
+        }
+
+        private CalendarEvent CreateCalendarEvent(Entity entity)
+        {
+            var instant = entity.Get<Instant>();
+            var when = this.clock.ToDateTime(instant);
+            string summary = this.GetEventSummary!(entity);
+            Uri? url = this.GetEventUrl?.Invoke(entity);
+            var calendarEvent = new CalendarEvent
+            {
+                Summary = summary,
+                Start = new CalDateTime(when),
+                Url = url,
+            };
+
+            return calendarEvent;
+        }
+    }
+}
--- a/src/Nitride.Calendar/IsCalendar.cs
+++ b/src/Nitride.Calendar/IsCalendar.cs
@ -0,0 +1,10 @@
+namespace Nitride.Calendar
+{
+    /// <summary>
+    /// A marker component for identifying an entity that represents a calendar.
+    /// </summary>
+    public class IsCalendar
+    {
+        public static IsCalendar Instance { get; } = new();
+    }
+}
--- a/src/Nitride.Calendar/Nitride.Calendar.csproj
+++ b/src/Nitride.Calendar/Nitride.Calendar.csproj
@ -0,0 +1,37 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net5.0</TargetFramework>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <PropertyGroup>
+        <Description>An extension to Nitride static site generator to generate iCalendar files.</Description>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.IO\Nitride.IO.csproj" />
+        <ProjectReference Include="..\Nitride.Temporal\Nitride.Temporal.csproj" />
+        <ProjectReference Include="..\Nitride\Nitride.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Gallium" Version="1.0.2" />
+        <PackageReference Include="Ical.Net" Version="4.2.0" />
+        <PackageReference Include="NodaTime" Version="3.0.5" />
+        <PackageReference Include="Zio" Version="0.12.0" />
+    </ItemGroup>
+
+    <!-- Include the source generator -->
+    <PropertyGroup>
+        <EmitCompilerGeneratedFiles>True</EmitCompilerGeneratedFiles>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.Generators\Nitride.Generators.csproj">
+            <OutputItemType>Analyzer</OutputItemType>
+            <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+        </ProjectReference>
+    </ItemGroup>
+
+</Project>
--- a/src/Nitride.Calendar/NitrideCalendarBuilderExtensions.cs
+++ b/src/Nitride.Calendar/NitrideCalendarBuilderExtensions.cs
@ -0,0 +1,16 @@
+using Autofac;
+using Nitride.Temporal;
+
+namespace Nitride.Calendar
+{
+    public static class NitrideCalendarBuilderExtensions
+    {
+        public static NitrideBuilder UseCalendar(this NitrideBuilder builder)
+        {
+            return builder
+                .UseTemporal()
+                .ConfigureContainer(
+                    x => x.RegisterModule<NitrideCalendarModule>());
+        }
+    }
+}
--- a/src/Nitride.Calendar/NitrideCalendarModule.cs
+++ b/src/Nitride.Calendar/NitrideCalendarModule.cs
@ -0,0 +1,6 @@
+namespace Nitride.Calendar
+{
+    public class NitrideCalendarModule : NitrideModuleBase
+    {
+    }
+}
--- a/src/Nitride.Feeds/CreateAtomFeeds.cs
+++ b/src/Nitride.Feeds/CreateAtomFeeds.cs
@ -0,0 +1,123 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Gallium;
+using Nitride.Contents;
+using Nitride.Feeds.Structure;
+using NodaTime;
+using Serilog;
+using Zio;
+
+namespace Nitride.Feeds
+{
+    /// <summary>
+    /// Creates various feeds from the given input.
+    /// </summary>
+    [WithProperties]
+    public partial class CreateAtomFeeds : NitrideOperationBase
+    {
+        private readonly ILogger logger;
+
+        public CreateAtomFeeds(ILogger logger)
+        {
+            this.logger = logger;
+            this.GetAlternateMimeType = _ => "text/html";
+        }
+
+        /// <summary>
+        /// Gets or sets the base URL for all the links.
+        /// </summary>
+        public string? BaseUrl { get; set; }
+
+        /// <summary>
+        /// Gets or sets the alternate MIME type.
+        /// </summary>
+        public Func<Entity, string> GetAlternateMimeType { get; set; }
+
+        /// <summary>
+        /// Gets or sets the alternate URL associated with the feed.
+        /// </summary>
+        public Func<Entity, Uri>? GetAlternateUrl { get; set; }
+
+        /// <summary>
+        /// Gets or sets the callback to get the author for the feed.
+        /// </summary>
+        public Func<Entity, AtomAuthor>? GetAuthor { get; set; }
+
+        /// <summary>
+        /// Gets or sets the callback to get the entries associated with the
+        /// feed.
+        /// </summary>
+        public Func<Entity, IEnumerable<AtomEntry>>? GetEntries { get; set; }
+
+        /// <summary>
+        /// Gets or sets the identifier (typically a URL) of the feed.
+        /// </summary>
+        public Func<Entity, string>? GetId { get; set; }
+
+        /// <summary>
+        /// Gets or sets the callback to get the path of the generated feed.
+        /// </summary>
+        public Func<Entity, UPath>? GetPath { get; set; }
+
+        /// <summary>
+        /// Gets or sets the rights (license) of the feed.
+        /// </summary>
+        public Func<Entity, string>? GetRights { get; set; }
+
+        /// <summary>
+        /// A callback that gets the title of the feed from the given entity.
+        /// </summary>
+        public Func<Entity, string>? GetTitle { get; set; }
+
+        /// <summary>
+        /// Gets or sets the updated timestamp for the feed.
+        /// </summary>
+        public Func<Entity, Instant>? GetUpdated { get; set; }
+
+        /// <summary>
+        /// Gets or sets the URL associated with the feed.
+        /// </summary>
+        public Func<Entity, Uri>? GetUrl { get; set; }
+
+        /// <inheritdoc />
+        public override IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            this.CheckNotNull(x => this.GetTitle);
+            this.CheckNotNull(x => this.GetPath);
+            this.CheckNotNull(x => this.GetEntries);
+
+            return input.SelectMany(this.CreateEntityFeed);
+        }
+
+        private IEnumerable<Entity> CreateEntityFeed(Entity entity)
+        {
+            // Create the top-level feed. All the nullable callbacks were
+            // verified in the function that calls this.
+            var feed = new AtomFeed()
+                .WithTitle(this.GetTitle?.Invoke(entity))
+                .WithId(this.GetId?.Invoke(entity))
+                .WithRights(this.GetRights?.Invoke(entity))
+                .WithUpdated(this.GetUpdated?.Invoke(entity))
+                .WithUrl(this.GetUrl?.Invoke(entity))
+                .WithAlternateUrl(this.GetAlternateUrl?.Invoke(entity))
+                .WithAlternateMimeType(this.GetAlternateMimeType.Invoke(entity))
+                .WithAuthor(this.GetAuthor?.Invoke(entity))
+                .ToXElement();
+
+            // Go through all the items inside the feed and add them.
+            foreach (var entry in this.GetEntries!(entity))
+            {
+                feed.Add(entry.ToXElement());
+            }
+
+            // Create the feed entity and return both objects.
+            Entity feedEntity = new Entity()
+                .Set(IsFeed.Instance)
+                .Set(this.GetPath!(entity))
+                .SetTextContent(feed + "\n");
+
+            return new[] { entity, feedEntity };
+        }
+    }
+}
--- a/src/Nitride.Feeds/HasFeed.cs
+++ b/src/Nitride.Feeds/HasFeed.cs
@ -0,0 +1,15 @@
+namespace Nitride.Feeds
+{
+    /// <summary>
+    /// A marker component that indicates this entity has a feed associated with
+    /// it.
+    /// </summary>
+    public class HasFeed
+    {
+        public HasFeed()
+        {
+        }
+
+        public static HasFeed Instance { get; } = new();
+    }
+}
--- a/src/Nitride.Feeds/IsFeed.cs
+++ b/src/Nitride.Feeds/IsFeed.cs
@ -0,0 +1,14 @@
+namespace Nitride.Feeds
+{
+    /// <summary>
+    /// A marker component that indicates this page is a feed.
+    /// </summary>
+    public class IsFeed
+    {
+        public IsFeed()
+        {
+        }
+
+        public static IsFeed Instance { get; } = new();
+    }
+}
--- a/src/Nitride.Feeds/Nitride.Feeds.csproj
+++ b/src/Nitride.Feeds/Nitride.Feeds.csproj
@ -0,0 +1,36 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net5.0</TargetFramework>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <PropertyGroup>
+        <Description>An extension to Nitride static site generator to generate Atom feeds.</Description>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.IO\Nitride.IO.csproj" />
+        <ProjectReference Include="..\Nitride.Temporal\Nitride.Temporal.csproj" />
+        <ProjectReference Include="..\Nitride\Nitride.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Gallium" Version="1.0.2" />
+        <PackageReference Include="NodaTime" Version="3.0.5" />
+        <PackageReference Include="Zio" Version="0.12.0" />
+    </ItemGroup>
+
+    <!-- Include the source generator -->
+    <PropertyGroup>
+        <EmitCompilerGeneratedFiles>True</EmitCompilerGeneratedFiles>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.Generators\Nitride.Generators.csproj">
+            <OutputItemType>Analyzer</OutputItemType>
+            <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+        </ProjectReference>
+    </ItemGroup>
+
+</Project>
--- a/src/Nitride.Feeds/NitrideFeedsBuilderExtensions.cs
+++ b/src/Nitride.Feeds/NitrideFeedsBuilderExtensions.cs
@ -0,0 +1,16 @@
+using Autofac;
+using Nitride.Temporal;
+
+namespace Nitride.Feeds
+{
+    public static class NitrideFeedsBuilderExtensions
+    {
+        public static NitrideBuilder UseFeeds(this NitrideBuilder builder)
+        {
+            return builder
+                .UseTemporal()
+                .ConfigureContainer(
+                    x => x.RegisterModule<NitrideFeedsModule>());
+        }
+    }
+}
--- a/src/Nitride.Feeds/NitrideFeedsModule.cs
+++ b/src/Nitride.Feeds/NitrideFeedsModule.cs
@ -0,0 +1,6 @@
+namespace Nitride.Feeds
+{
+    public class NitrideFeedsModule : NitrideModuleBase
+    {
+    }
+}
--- a/src/Nitride.Feeds/Structure/AtomAuthor.cs
+++ b/src/Nitride.Feeds/Structure/AtomAuthor.cs
@ -0,0 +1,41 @@
+using System.Xml.Linq;
+
+namespace Nitride.Feeds.Structure
+{
+    /// <summary>
+    /// The type-safe structure for an author element.
+    /// </summary>
+    [WithProperties]
+    public partial class AtomAuthor
+    {
+        /// <summary>
+        /// Gets or sets the name of the author.
+        /// </summary>
+        public string? Name { get; set; }
+
+        /// <summary>
+        /// Creates an XML element out of the feed along with all items inside
+        /// the feed.
+        /// </summary>
+        /// <returns></returns>
+        public XElement? ToXElement()
+        {
+            if (this.Name == null)
+            {
+                return null;
+            }
+
+            var author = new XElement(XmlConstants.AtomNamespace + "author");
+
+            if (!string.IsNullOrEmpty(this.Name))
+            {
+                author.Add(
+                    new XElement(
+                        XmlConstants.AtomNamespace + "name",
+                        new XText(this.Name)));
+            }
+
+            return author;
+        }
+    }
+}
--- a/src/Nitride.Feeds/Structure/AtomCategory.cs
+++ b/src/Nitride.Feeds/Structure/AtomCategory.cs
@ -0,0 +1,57 @@
+using System;
+using System.Xml.Linq;
+
+namespace Nitride.Feeds.Structure
+{
+    /// <summary>
+    /// The type-safe structure for a entry's category element.
+    /// </summary>
+    [WithProperties]
+    public partial class AtomCategory
+    {
+        /// <summary>
+        /// Gets or sets the label associated with the category.
+        /// </summary>
+        public string? Label { get; set; }
+
+        /// <summary>
+        /// Gets or sets the scheme associated with the category.
+        /// </summary>
+        public Uri? Scheme { get; set; }
+
+        /// <summary>
+        /// Gets or sets the term of the category.
+        /// </summary>
+        public string? Term { get; set; }
+
+        /// <summary>
+        /// Creates an XML element out of the feed along with all items inside
+        /// the feed.
+        /// </summary>
+        /// <returns></returns>
+        public XElement ToXElement()
+        {
+            if (this.Term == null)
+            {
+                throw new NullReferenceException(
+                    "Category term cannot be null.");
+            }
+
+            var elem = new XElement(
+                XmlConstants.AtomNamespace + "category",
+                new XAttribute("term", this.Term));
+
+            if (this.Scheme != null)
+            {
+                elem.Add(new XAttribute("scheme", this.Scheme.ToString()));
+            }
+
+            if (!string.IsNullOrEmpty(this.Label))
+            {
+                elem.Add(new XAttribute("label", this.Label));
+            }
+
+            return elem;
+        }
+    }
+}
--- a/src/Nitride.Feeds/Structure/AtomEntry.cs
+++ b/src/Nitride.Feeds/Structure/AtomEntry.cs
@ -0,0 +1,121 @@
+using System;
+using System.Collections.Generic;
+using System.Xml.Linq;
+using NodaTime;
+using static Nitride.Feeds.Structure.XmlConstants;
+
+namespace Nitride.Feeds.Structure
+{
+    /// <summary>
+    /// The type-safe structure for an entry in the Atom feed.
+    /// </summary>
+    [WithProperties]
+    public partial class AtomEntry
+    {
+        /// <summary>
+        /// Gets or sets the author for the feed.
+        /// </summary>
+        public AtomAuthor? Author { get; set; }
+
+        /// <summary>
+        /// Gets or sets the categories associated with this entry.
+        /// </summary>
+        public IEnumerable<AtomCategory>? Categories { get; set; }
+
+        /// <summary>
+        /// Gets or sets the content of the entry.
+        /// </summary>
+        public string? Content { get; set; }
+
+        /// <summary>
+        /// Gets or sets the type of content (text, html) of the content.
+        /// </summary>
+        public string ContentType { get; set; } = "html";
+
+        /// <summary>
+        /// Gets or sets the ID of the feed.
+        /// </summary>
+        public string? Id { get; set; }
+
+        /// <summary>
+        /// Gets or sets the summary of the entry.
+        /// </summary>
+        public string? Summary { get; set; }
+
+        /// <summary>
+        /// Gets or sets the type of content (text, html) of the summary.
+        /// </summary>
+        public string SummaryType { get; set; } = "html";
+
+        /// <summary>
+        /// Gets or sets the title of the Feed.
+        /// </summary>
+        public string? Title { get; set; }
+
+        /// <summary>
+        /// Gets or sets the timestamp that the feed was updated.
+        /// </summary>
+        public Instant? Updated { get; set; }
+
+        /// <summary>
+        /// Gets or sets the URL associated with this feed.
+        /// </summary>
+        public Uri? Url { get; set; }
+
+        /// <summary>
+        /// Creates an XML element out of the feed along with all items inside
+        /// the feed.
+        /// </summary>
+        /// <returns></returns>
+        public XElement? ToXElement()
+        {
+            var elem = new XElement(AtomNamespace + "entry");
+
+            AtomHelper.AddIfSet(elem, "title", this.Title);
+
+            if (this.Url != null)
+            {
+                elem.Add(
+                    new XElement(
+                        AtomNamespace + "link",
+                        new XAttribute("rel", "alternate"),
+                        new XAttribute("href", this.Url.ToString())));
+            }
+
+            AtomHelper.AddIfSet(
+                elem,
+                "updated",
+                this.Updated?.ToString("g", null));
+            AtomHelper.AddIfSet(elem, "id", this.Id);
+            AtomHelper.AddIfSet(elem, this.Author?.ToXElement());
+
+            if (this.Categories != null)
+            {
+                foreach (var category in this.Categories)
+                {
+                    elem.Add(category.ToXElement());
+                }
+            }
+
+            if (!string.IsNullOrWhiteSpace(this.Summary))
+            {
+                elem.Add(
+                    new XElement(
+                        AtomNamespace + "summary",
+                        new XAttribute("type", this.SummaryType),
+                        new XText(this.Summary)));
+            }
+
+            if (!string.IsNullOrWhiteSpace(this.Content))
+            {
+                elem.Add(
+                    new XElement(
+                        AtomNamespace + "content",
+                        new XAttribute("type", this.ContentType),
+                        new XText(this.Content)));
+            }
+
+            return elem;
+        }
+    }
+}
--- a/src/Nitride.Feeds/Structure/AtomFeed.cs
+++ b/src/Nitride.Feeds/Structure/AtomFeed.cs
@ -0,0 +1,104 @@
+using System;
+using System.Xml.Linq;
+using NodaTime;
+using static Nitride.Feeds.Structure.XmlConstants;
+
+namespace Nitride.Feeds.Structure
+{
+    /// <summary>
+    /// The type-safe structure of the top-level feed.
+    /// </summary>
+    [WithProperties]
+    public partial class AtomFeed
+    {
+        /// <summary>
+        /// Gets or sets the MIME type for the alternate URL.
+        /// </summary>
+        public string AlternateMimeType { get; set; } = "text/html";
+
+        /// <summary>
+        /// Gets or sets the alternate URL for this feed.
+        /// </summary>
+        public Uri? AlternateUrl { get; set; }
+
+        /// <summary>
+        /// Gets or sets the author for the feed.
+        /// </summary>
+        public AtomAuthor? Author { get; set; }
+
+        /// <summary>
+        /// Gets or sets the ID of the feed.
+        /// </summary>
+        public string? Id { get; set; }
+
+        /// <summary>
+        /// Gets or sets the rights (license) of the feed.
+        /// </summary>
+        public string? Rights { get; set; }
+
+        /// <summary>
+        /// Gets or sets the title of the Feed.
+        /// </summary>
+        public string? Title { get; set; }
+
+        /// <summary>
+        /// Gets or sets the timestamp that the feed was updated.
+        /// </summary>
+        public Instant? Updated { get; set; }
+
+        /// <summary>
+        /// Gets or sets the URL associated with this feed.
+        /// </summary>
+        public Uri? Url { get; set; }
+
+        /// <summary>
+        /// Creates an XML element out of the feed along with all items inside
+        /// the feed.
+        /// </summary>
+        /// <returns></returns>
+        public XElement ToXElement()
+        {
+            var elem = new XElement(AtomNamespace + "feed");
+
+            if (!string.IsNullOrWhiteSpace(this.Title))
+            {
+                elem.Add(
+                    new XElement(
+                        AtomNamespace + "title",
+                        new XAttribute("type", "text"),
+                        new XAttribute(XNamespace.Xml + "lang", "en"),
+                        new XText(this.Title)));
+            }
+
+            if (this.Url != null)
+            {
+                elem.Add(
+                    new XElement(
+                        AtomNamespace + "link",
+                        new XAttribute("type", "application/atom+xml"),
+                        new XAttribute("href", this.Url.ToString()),
+                        new XAttribute("rel", "self")));
+            }
+
+            if (this.AlternateUrl != null)
+            {
+                elem.Add(
+                    new XElement(
+                        AtomNamespace + "link",
+                        new XAttribute("type", this.AlternateMimeType),
+                        new XAttribute("href", this.AlternateUrl.ToString()),
+                        new XAttribute("rel", "alternate")));
+            }
+
+            AtomHelper.AddIfSet(
+                elem,
+                "updated",
+                this.Updated?.ToString("g", null));
+            AtomHelper.AddIfSet(elem, "id", this.Id);
+            AtomHelper.AddIfSet(elem, this.Author?.ToXElement());
+            AtomHelper.AddIfSet(elem, "rights", this.Rights);
+
+            return elem;
+        }
+    }
+}
--- a/src/Nitride.Feeds/Structure/AtomHelper.cs
+++ b/src/Nitride.Feeds/Structure/AtomHelper.cs
@ -0,0 +1,29 @@
+using System.Xml.Linq;
+
+namespace Nitride.Feeds.Structure
+{
+    /// <summary>
+    /// Helper methods for working with XML elements.
+    /// </summary>
+    public static class AtomHelper
+    {
+        public static void AddIfSet(XElement root, XElement? elem)
+        {
+            if (elem != null)
+            {
+                root.Add(elem);
+            }
+        }
+
+        public static void AddIfSet(XElement elem, string name, string? text)
+        {
+            if (!string.IsNullOrWhiteSpace(text))
+            {
+                elem.Add(
+                    new XElement(
+                        XmlConstants.AtomNamespace + name,
+                        new XText(text)));
+            }
+        }
+    }
+}
--- a/src/Nitride.Feeds/Structure/XmlConstants.cs
+++ b/src/Nitride.Feeds/Structure/XmlConstants.cs
@ -0,0 +1,22 @@
+using System.Xml.Linq;
+
+namespace Nitride.Feeds.Structure
+{
+    /// <summary>
+    /// Common constants used while generating feeds.
+    /// </summary>
+    public static class XmlConstants
+    {
+        /// <summary>
+        /// The XML namespace for Atom feeds.
+        /// </summary>
+        public static readonly XNamespace AtomNamespace =
+            "http://www.w3.org/2005/Atom";
+
+        /// <summary>
+        /// The XML namespace for media.
+        /// </summary>
+        public static readonly XNamespace MediaNamespace =
+            "http://search.yahoo.com/mrss/";
+    }
+}
--- a/src/Nitride.Gemtext/IsGemtext.cs
+++ b/src/Nitride.Gemtext/IsGemtext.cs
@ -0,0 +1,11 @@
+namespace Nitride.Gemtext
+{
+    /// <summary>
+    /// A marker component for indicating that an entity is Gemtext, the format
+    /// for text files using the Gemini protocol.
+    /// </summary>
+    public class IsGemtext
+    {
+        public static IsGemtext Instance { get; } = new IsGemtext();
+    }
+}
--- a/src/Nitride.Gemtext/Nitride.Gemtext.csproj
+++ b/src/Nitride.Gemtext/Nitride.Gemtext.csproj
@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net5.0</TargetFramework>
+    </PropertyGroup>
+
+    <PropertyGroup>
+        <Description>An extension to Nitride static site generator to generate Gemtext output.</Description>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride\Nitride.csproj"/>
+    </ItemGroup>
+
+    <!-- Include the source generator -->
+    <PropertyGroup>
+        <EmitCompilerGeneratedFiles>True</EmitCompilerGeneratedFiles>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.Generators\Nitride.Generators.csproj">
+            <OutputItemType>Analyzer</OutputItemType>
+            <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+        </ProjectReference>
+    </ItemGroup>
+
+</Project>
--- a/src/Nitride.Gemtext/NitrideGemtextBuilderExtensions.cs
+++ b/src/Nitride.Gemtext/NitrideGemtextBuilderExtensions.cs
@ -0,0 +1,14 @@
+using Autofac;
+
+namespace Nitride.Gemtext
+{
+    public static class NitrideGemtextBuilderExtensions
+    {
+        public static NitrideBuilder UseGemtext(this NitrideBuilder builder)
+        {
+            return builder
+                .ConfigureContainer(
+                    x => x.RegisterModule<NitrideGemtextModule>());
+        }
+    }
+}
--- a/src/Nitride.Gemtext/NitrideGemtextModule.cs
+++ b/src/Nitride.Gemtext/NitrideGemtextModule.cs
@ -0,0 +1,6 @@
+namespace Nitride.Gemtext
+{
+    public class NitrideGemtextModule : NitrideModuleBase
+    {
+    }
+}
--- a/src/Nitride.Generators/CodeAnalysisExtensions.cs
+++ b/src/Nitride.Generators/CodeAnalysisExtensions.cs
@ -0,0 +1,159 @@
+using Microsoft.CodeAnalysis;
+
+namespace Nitride.Generators
+{
+    /// <summary>
+    /// Various wrappers around the diagnostics to simplify generation.
+    /// </summary>
+    public static class CodeAnalysisExtensions
+    {
+        /// <summary>
+        /// Creates an error message to break the build while generating code.
+        /// </summary>
+        /// <param name="context">The context that contains the diagnostic.</param>
+        /// <param name="messageCode">The normalized message code.</param>
+        /// <param name="format">The string format for the message.</param>
+        /// <param name="parameters">The optional parameters.</param>
+        public static void Error(
+            this GeneratorExecutionContext context,
+            MessageCode messageCode,
+            string format,
+            params object[] parameters)
+        {
+            Error(context, messageCode, null, format, parameters);
+        }
+
+        /// <summary>
+        /// Creates an error message to break the build while generating code.
+        /// </summary>
+        /// <param name="context">The context that contains the diagnostic.</param>
+        /// <param name="messageCode">The normalized message code.</param>
+        /// <param name="location">The optional location for the message.</param>
+        /// <param name="format">The string format for the message.</param>
+        /// <param name="parameters">The optional parameters.</param>
+        public static void Error(
+            this GeneratorExecutionContext context,
+            MessageCode messageCode,
+            Location? location,
+            string format,
+            params object[] parameters)
+        {
+            context.Message(
+                messageCode,
+                location,
+                DiagnosticSeverity.Error,
+                format,
+                parameters);
+        }
+
+        /// <summary>
+        /// Creates an informational message to break the build while generating code.
+        /// </summary>
+        /// <param name="context">The context that contains the diagnostic.</param>
+        /// <param name="messageCode">The normalized message code.</param>
+        /// <param name="format">The string format for the message.</param>
+        /// <param name="parameters">The optional parameters.</param>
+        public static void Information(
+            this GeneratorExecutionContext context,
+            MessageCode messageCode,
+            string format,
+            params object[] parameters)
+        {
+            Information(context, messageCode, null, format, parameters);
+        }
+
+        /// <summary>
+        /// Creates an informational message to break the build while generating code.
+        /// </summary>
+        /// <param name="context">The context that contains the diagnostic.</param>
+        /// <param name="messageCode">The normalized message code.</param>
+        /// <param name="location">The optional location for the message.</param>
+        /// <param name="format">The string format for the message.</param>
+        /// <param name="parameters">The optional parameters.</param>
+        public static void Information(
+            this GeneratorExecutionContext context,
+            MessageCode messageCode,
+            Location? location,
+            string format,
+            params object[] parameters)
+        {
+            context.Message(
+                messageCode,
+                location,
+                DiagnosticSeverity.Info,
+                format,
+                parameters);
+        }
+
+        /// <summary>
+        /// Creates a warning message to break the build while generating code.
+        /// </summary>
+        /// <param name="context">The context that contains the diagnostic.</param>
+        /// <param name="messageCode">The normalized message code.</param>
+        /// <param name="format">The string format for the message.</param>
+        /// <param name="parameters">The optional parameters.</param>
+        public static void Warning(
+            this GeneratorExecutionContext context,
+            MessageCode messageCode,
+            string format,
+            params object[] parameters)
+        {
+            Warning(context, messageCode, null, format, parameters);
+        }
+
+        /// <summary>
+        /// Creates a warning message to break the build while generating code.
+        /// </summary>
+        /// <param name="context">The context that contains the diagnostic.</param>
+        /// <param name="messageCode">The normalized message code.</param>
+        /// <param name="location">The optional location for the message.</param>
+        /// <param name="format">The string format for the message.</param>
+        /// <param name="parameters">The optional parameters.</param>
+        public static void Warning(
+            this GeneratorExecutionContext context,
+            MessageCode messageCode,
+            Location? location,
+            string format,
+            params object[] parameters)
+        {
+            context.Message(
+                messageCode,
+                location,
+                DiagnosticSeverity.Warning,
+                format,
+                parameters);
+        }
+
+        /// <summary>
+        /// Creates a message to break the build while generating code.
+        /// </summary>
+        /// <param name="context">The context that contains the diagnostic.</param>
+        /// <param name="messageCode">The normalized message code.</param>
+        /// <param name="location">The optional location for the message.</param>
+        /// <param name="format">The string format for the message.</param>
+        /// <param name="parameters">The optional parameters.</param>
+        /// <param name="severity">The severity of the message.</param>
+        private static void Message(
+            this GeneratorExecutionContext context,
+            MessageCode messageCode,
+            Location? location,
+            DiagnosticSeverity severity,
+            string format,
+            params object[] parameters)
+        {
+            context.ReportDiagnostic(
+                Diagnostic.Create(
+                    "GN" + ((int)messageCode).ToString("D4"),
+                    "Nitride",
+                    string.Format(format, parameters),
+                    severity,
+                    severity,
+                    true,
+                    severity is DiagnosticSeverity.Warning
+                        or DiagnosticSeverity.Info
+                        ? 4
+                        : 0,
+                    location: location));
+        }
+    }
+}
--- a/src/Nitride.Generators/MessageCode.cs
+++ b/src/Nitride.Generators/MessageCode.cs
@ -0,0 +1,10 @@
+namespace Nitride.Generators
+{
+    /// <summary>
+    /// All the error messages produced by the generators.
+    /// </summary>
+    public enum MessageCode
+    {
+        Debug = 1,
+    }
+}
--- a/src/Nitride.Generators/Nitride.Generators.csproj
+++ b/src/Nitride.Generators/Nitride.Generators.csproj
@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net5.0</TargetFramework>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <PropertyGroup>
+        <Description>Common source generators for Nitride.</Description>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Gallium" Version="1.0.2" />
+        <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="3.8.0" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.8.0" />
+        <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.8.0" />
+    </ItemGroup>
+
+</Project>
--- a/src/Nitride.Generators/WithPropertySourceGenerator.cs
+++ b/src/Nitride.Generators/WithPropertySourceGenerator.cs
@ -0,0 +1,209 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Text;
+
+namespace Nitride.Generators
+{
+    /// <summary>
+    /// Implements a source generator that creates Set* methods for the various
+    /// properties that also returns the same object for purposes of chaining
+    /// together calls.
+    /// </summary>
+    [Generator]
+    public class WithPropertySourceGenerator : ISourceGenerator
+    {
+        public void Execute(GeneratorExecutionContext context)
+        {
+            // Get the  generator infrastructure will create a receiver and
+            // populate it we can retrieve the populated instance via the
+            // context.
+            var syntaxReceiver = (SyntaxReceiver?)context.SyntaxReceiver;
+
+            if (syntaxReceiver == null)
+            {
+                return;
+            }
+
+            // Report any messages.
+            foreach (var message in syntaxReceiver.Messages)
+            {
+                context.Information(
+                    MessageCode.Debug,
+                    Location.Create(
+                        "Temporary.g.cs",
+                        TextSpan.FromBounds(0, 0),
+                        new LinePositionSpan(
+                            new LinePosition(0, 0),
+                            new LinePosition(0, 0))),
+                    "Generating additional identifier code: {0}",
+                    message);
+            }
+
+            // If we didn't find anything, then there is nothing to do.
+            if (syntaxReceiver.ClassesToAugment.Count == 0)
+            {
+                return;
+            }
+
+            // Go through each one.
+            foreach (var cds in syntaxReceiver.ClassesToAugment)
+            {
+                this.GenerateClassFile(context, cds);
+            }
+        }
+
+        public void Initialize(GeneratorInitializationContext context)
+        {
+            // Register a factory that can create our custom syntax receiver
+            context.RegisterForSyntaxNotifications(
+                () => new SyntaxReceiver(context));
+        }
+
+        private void GenerateClassFile(
+            GeneratorExecutionContext context,
+            ClassDeclarationSyntax cds)
+        {
+            // Get the namespace.
+            var nds = (NamespaceDeclarationSyntax?)cds.Parent;
+
+            if (nds == null)
+            {
+                return;
+            }
+
+            string? ns = nds.Name.ToString();
+
+            // Create the partial class.
+            StringBuilder buffer = new();
+            buffer.AppendLine("#nullable enable");
+
+            // Copy the using statements from the file.
+            if (nds.Parent is CompilationUnitSyntax cus)
+            {
+                foreach (var uds in cus.Usings)
+                {
+                    buffer.AppendLine(uds.ToString());
+                }
+
+                buffer.AppendLine();
+            }
+
+            // Create the namespace.
+            buffer.AppendLine($"namespace {ns}");
+            buffer.AppendLine("{");
+            buffer.AppendLine($"    public partial class {cds.Identifier}");
+            buffer.AppendLine("    {");
+
+            // Go through the properties of the namespace.
+            IEnumerable<PropertyDeclarationSyntax> properties = cds.Members
+                .Where(m => m.Kind() == SyntaxKind.PropertyDeclaration)
+                .Cast<PropertyDeclarationSyntax>();
+            bool first = true;
+
+            foreach (PropertyDeclarationSyntax pds in properties)
+            {
+                // See if we have a setter.
+                bool found =
+                    pds.AccessorList?.Accessors
+                        .Any(x => x.Keyword.ToString() == "set")
+                    ?? false;
+
+                if (!found)
+                {
+                    continue;
+                }
+
+                // If we aren't first, then add a newline before it.
+                if (first)
+                {
+                    first = false;
+                }
+                else
+                {
+                    buffer.AppendLine();
+                }
+
+                // Write some documentation.
+                buffer.AppendLine("        /// <summary>");
+                buffer.AppendLine(
+                    string.Format(
+                        "        /// Sets the {0} value and returns the operation for chaining.",
+                        pds.Identifier));
+                buffer.AppendLine("        /// </summary>");
+
+                // We have the components for writing out a setter.
+                buffer.AppendLine(
+                    string.Format(
+                        "        public {0} With{1}({2} value)",
+                        cds.Identifier,
+                        pds.Identifier,
+                        pds.Type));
+                buffer.AppendLine("        {");
+                buffer.AppendLine(
+                    string.Format(
+                        "            this.{0} = value;",
+                        pds.Identifier));
+                buffer.AppendLine("            return this;");
+                buffer.AppendLine("        }");
+            }
+
+            // Finish up the class.
+            buffer.AppendLine("    }");
+            buffer.AppendLine("}");
+
+            // Create the source text and write out the file.
+            SourceText sourceText = SourceText.From(
+                buffer.ToString(),
+                Encoding.UTF8);
+            context.AddSource(cds.Identifier + ".Generated.cs", sourceText);
+        }
+
+        private class SyntaxReceiver : ISyntaxReceiver
+        {
+            private readonly GeneratorInitializationContext context;
+
+            public SyntaxReceiver(GeneratorInitializationContext context)
+            {
+                this.context = context;
+                this.ClassesToAugment = new List<ClassDeclarationSyntax>();
+                this.Messages = new List<string>();
+            }
+
+            public List<ClassDeclarationSyntax> ClassesToAugment { get; }
+
+            public List<string> Messages { get; }
+
+            public void OnVisitSyntaxNode(SyntaxNode syntaxNode)
+            {
+                // We only care about class declarations.
+                if (syntaxNode is not ClassDeclarationSyntax cds)
+                {
+                    return;
+                }
+
+                // See if the class has our set properties attribute.
+                bool found = cds
+                    .AttributeLists
+                    .AsEnumerable()
+                    .SelectMany(x => x.Attributes)
+                    .Select(x => x.Name.ToString())
+                    .Any(
+                        x => x switch
+                        {
+                            "WithProperties" => true,
+                            "WithPropertiesAttribute" => true,
+                            _ => false,
+                        });
+
+                if (found)
+                {
+                    this.ClassesToAugment.Add(cds);
+                }
+            }
+        }
+    }
+}
--- a/src/Nitride.Handlebars/ApplyContentHandlebarsTemplate.cs
+++ b/src/Nitride.Handlebars/ApplyContentHandlebarsTemplate.cs
@ -0,0 +1,74 @@
+using System;
+using System.Collections.Generic;
+using Gallium;
+using HandlebarsDotNet;
+using Nitride.Contents;
+
+namespace Nitride.Handlebars
+{
+    /// <summary>
+    /// An operation that uses the content to create a template that is then
+    /// applied against the content and metadata and then replaces the content
+    /// of that entity.
+    /// </summary>
+    public class ApplyContentHandlebarsTemplate<TModel> : NitrideOperationBase
+    {
+        private readonly HandlebarsTemplateCache cache;
+
+        public ApplyContentHandlebarsTemplate(HandlebarsTemplateCache cache)
+        {
+            this.cache = cache;
+        }
+
+        /// <summary>
+        /// Gets or sets the callback used to create a model from a given
+        /// entity. This allows for the website to customize what information is
+        /// being passed to the template.
+        /// </summary>
+        public Func<Entity, TModel>? CreateModelCallback { get; set; }
+
+        /// <inheritdoc />
+        public override IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            this.CheckNotNull(x => x.CreateModelCallback);
+
+            return input
+                .ForEachEntity<HasHandlebarsTemplate, ITextContent>(this.Apply);
+        }
+
+        /// <summary>
+        /// Sets the callback for the template and returns the operation to
+        /// chain operations.
+        /// </summary>
+        /// <param name="callback">The callback to set.</param>
+        /// <returns>The ApplyContentHandlebarsTemplate to chain requests.</returns>
+        public ApplyContentHandlebarsTemplate<TModel> WithCreateModelCallback(
+            Func<Entity, TModel>? callback)
+        {
+            this.CreateModelCallback = callback;
+            return this;
+        }
+
+        private Entity Apply(
+            Entity entity,
+            HasHandlebarsTemplate _,
+            ITextContent content)
+        {
+            // Create the model using the callback.
+            TModel model = this.CreateModelCallback!(entity);
+
+            // Create a template from the contents.
+            string text = content.GetText();
+            HandlebarsTemplate<object, object> template =
+                this.cache.GetLiteralTemplate(text);
+
+            // Render the template and create a new entity with the updated
+            // text.
+            string result = template(model!);
+
+            return entity
+                .Remove<HasHandlebarsTemplate>()
+                .SetTextContent(new StringTextContent(result));
+        }
+    }
+}
--- a/src/Nitride.Handlebars/ApplyStyleHandlebarsTemplate.cs
+++ b/src/Nitride.Handlebars/ApplyStyleHandlebarsTemplate.cs
@ -0,0 +1,88 @@
+using System;
+using System.Collections.Generic;
+using Gallium;
+using HandlebarsDotNet;
+using Nitride.Contents;
+
+namespace Nitride.Handlebars
+{
+    /// <summary>
+    /// An operation that applies a common or shared template on the content of
+    /// a document that includes theme or styling information.
+    /// </summary>
+    public class ApplyStyleHandlebarsTemplate<TModel> : NitrideOperationBase
+    {
+        private readonly HandlebarsTemplateCache cache;
+
+        public ApplyStyleHandlebarsTemplate(HandlebarsTemplateCache cache)
+        {
+            this.cache = cache;
+        }
+
+        /// <summary>
+        /// Gets or sets the callback used to create a model from a given
+        /// entity. This allows for the website to customize what information is
+        /// being passed to the template.
+        /// </summary>
+        public Func<Entity, TModel>? CreateModelCallback { get; set; }
+
+        /// <summary>
+        /// Gets or sets the callback used to determine which template to use
+        /// for a given entity. This lets one have a per-page template change.
+        /// </summary>
+        public Func<Entity, string>? GetTemplateName { get; set; }
+
+        public IHandlebars? Handlebars { get; set; }
+
+        /// <inheritdoc />
+        public override IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            // Make sure we have sane data.
+            this.CheckNotNull(x => x.CreateModelCallback);
+            this.CheckNotNull(x => x.Handlebars);
+            this.CheckNotNull(x => x.GetTemplateName);
+
+            // Create and set up the Handlebars.
+            return input
+                .ForEachEntity<ITextContent>(this.Apply);
+        }
+
+        /// <summary>
+        /// Sets the callback for the template and returns the operation to
+        /// chain operations.
+        /// </summary>
+        /// <param name="callback">The callback to set.</param>
+        /// <returns>The ApplyContentHandlebarsTemplate to chain requests.</returns>
+        public ApplyStyleHandlebarsTemplate<TModel> WithCreateModelCallback(
+            Func<Entity, TModel>? callback)
+        {
+            this.CreateModelCallback = callback;
+            return this;
+        }
+
+        public ApplyStyleHandlebarsTemplate<TModel> WithGetTemplateName(
+            Func<Entity, string>? callback)
+        {
+            this.GetTemplateName = callback;
+            return this;
+        }
+
+        public ApplyStyleHandlebarsTemplate<TModel> WithHandlebars(
+            IHandlebars? handlebars)
+        {
+            this.Handlebars = handlebars;
+            return this;
+        }
+
+        private Entity Apply(Entity entity, ITextContent content)
+        {
+            TModel model = this.CreateModelCallback!(entity);
+            string name = this.GetTemplateName!(entity);
+            HandlebarsTemplate<object, object> template =
+                this.cache.GetNamedTemplate(name);
+            string result = template(model!);
+
+            return entity.SetTextContent(result);
+        }
+    }
+}
--- a/src/Nitride.Handlebars/HandlebarsTemplateCache.cs
+++ b/src/Nitride.Handlebars/HandlebarsTemplateCache.cs
@ -0,0 +1,70 @@
+using System.Collections.Generic;
+using HandlebarsDotNet;
+using Open.Threading;
+
+namespace Nitride.Handlebars
+{
+    /// <summary>
+    /// Implements a cache for templates to prevent compiling the same template
+    /// more than once.
+    /// </summary>
+    public class HandlebarsTemplateCache
+    {
+        private readonly IHandlebars handlebars;
+
+        private readonly ModificationSynchronizer locker;
+
+        private readonly Dictionary<string, HandlebarsTemplate<object, object>>
+            templates;
+
+        public HandlebarsTemplateCache(IHandlebars handlebars)
+        {
+            this.handlebars = handlebars;
+            this.locker = new ModificationSynchronizer();
+            this.templates =
+                new Dictionary<string, HandlebarsTemplate<object, object>>();
+        }
+
+        /// <summary>
+        /// Caches the template by name based on the contents of the disk. It
+        /// does it once in a multi-threaded manner to ensure it is only cached
+        /// once in memory.
+        /// </summary>
+        /// <param name="literal">The string that contains the template.</param>
+        /// <returns></returns>
+        public HandlebarsTemplate<object, object> GetLiteralTemplate(
+            string literal)
+        {
+            // Start with a read lock to see if we've already compiled it.
+            this.locker.Modifying(
+                () => !this.templates.ContainsKey(literal),
+                () =>
+                {
+                    HandlebarsTemplate<object, object> template =
+                        this.handlebars
+                            !.Compile(literal);
+
+                    this.templates[literal] = template;
+
+                    return true;
+                });
+
+            return this.locker.Reading(() => this.templates[literal]);
+        }
+
+        /// <summary>
+        /// Caches the template by name based on the contents of the disk. It
+        /// does it once in a multi-threaded manner to ensure it is only cached
+        /// once in memory.
+        /// </summary>
+        /// <param name="templateName"></param>
+        /// <returns></returns>
+        public HandlebarsTemplate<object, object> GetNamedTemplate(
+            string templateName)
+        {
+            string template = $"{{{{> {templateName}}}}}";
+
+            return this.GetLiteralTemplate(template);
+        }
+    }
+}
--- a/src/Nitride.Handlebars/HasHandlebarsTemplate.cs
+++ b/src/Nitride.Handlebars/HasHandlebarsTemplate.cs
@ -0,0 +1,11 @@
+namespace Nitride.Handlebars
+{
+    /// <summary>
+    /// A marker component that indicates that a given file with text component
+    /// has a Handlebars template in it.
+    /// </summary>
+    public class HasHandlebarsTemplate
+    {
+        public static HasHandlebarsTemplate Instance { get; } = new();
+    }
+}
--- a/src/Nitride.Handlebars/IdentifyHandlebars.cs
+++ b/src/Nitride.Handlebars/IdentifyHandlebars.cs
@ -0,0 +1,32 @@
+using System.Collections.Generic;
+using Gallium;
+using Nitride.Contents;
+
+namespace Nitride.Handlebars
+{
+    /// <summary>
+    /// An operation that discovers which text files have a Handlebars template
+    /// inside them.
+    /// </summary>
+    public class IdentifyHandlebars : INitrideOperation
+    {
+        /// <inheritdoc />
+        public IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            return input
+                .ForEachEntity<ITextContent>(this.ScanContent);
+        }
+
+        private Entity ScanContent(Entity entity, ITextContent content)
+        {
+            string text = content.GetText();
+
+            if (text.Contains("{{") && text.Contains("}}"))
+            {
+                return entity.Set(HasHandlebarsTemplate.Instance);
+            }
+
+            return entity;
+        }
+    }
+}
--- a/src/Nitride.Handlebars/Nitride.Handlebars.csproj
+++ b/src/Nitride.Handlebars/Nitride.Handlebars.csproj
@ -0,0 +1,36 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net5.0</TargetFramework>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <PropertyGroup>
+        <Description>An extension to Nitride static site generator to style output with Handlebars.</Description>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Autofac" Version="6.2.0" />
+        <PackageReference Include="Gallium" Version="1.0.2" />
+        <PackageReference Include="Handlebars.Net" Version="2.0.8" />
+        <PackageReference Include="NodaTime.Testing" Version="3.0.5" />
+        <PackageReference Include="Open.Threading" Version="1.6.3" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride\Nitride.csproj" />
+    </ItemGroup>
+
+    <!-- Include the source generator -->
+    <PropertyGroup>
+        <EmitCompilerGeneratedFiles>True</EmitCompilerGeneratedFiles>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.Generators\Nitride.Generators.csproj">
+            <OutputItemType>Analyzer</OutputItemType>
+            <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+        </ProjectReference>
+    </ItemGroup>
+
+</Project>
--- a/src/Nitride.Handlebars/NitrideHandlebarsBuilderExtensions.cs
+++ b/src/Nitride.Handlebars/NitrideHandlebarsBuilderExtensions.cs
@ -0,0 +1,14 @@
+using Autofac;
+
+namespace Nitride.Handlebars
+{
+    public static class NitrideHandlebarsBuilderExtensions
+    {
+        public static NitrideBuilder UseHandlebars(this NitrideBuilder builder)
+        {
+            return builder
+                .ConfigureContainer(
+                    x => x.RegisterModule<NitrideHandlebarsModule>());
+        }
+    }
+}
--- a/src/Nitride.Handlebars/NitrideHandlebarsModule.cs
+++ b/src/Nitride.Handlebars/NitrideHandlebarsModule.cs
@ -0,0 +1,22 @@
+using Autofac;
+
+namespace Nitride.Handlebars
+{
+    public class NitrideHandlebarsModule : NitrideModuleBase
+    {
+        /// <inheritdoc />
+        protected override void Register(ContainerBuilder builder)
+        {
+            builder
+                .RegisterType<HandlebarsTemplateCache>()
+                .AsSelf()
+                .SingleInstance();
+            builder
+                .RegisterGeneric(typeof(ApplyContentHandlebarsTemplate<>))
+                .As(typeof(ApplyContentHandlebarsTemplate<>));
+            builder
+                .RegisterGeneric(typeof(ApplyStyleHandlebarsTemplate<>))
+                .As(typeof(ApplyStyleHandlebarsTemplate<>));
+        }
+    }
+}
--- a/src/Nitride.Handlebars/README.md
+++ b/src/Nitride.Handlebars/README.md
@ -0,0 +1,26 @@
+Nitride.Handlebars
+==================
+
+This is a collection
+of [Handlebars](https://github.com/Handlebars-Net/Handlebars.Net)
+operations that work with Nitride. There are two ways of using Handelbars in
+this package.
+
+## IHandlebars
+
+This library does *not* configure or register `IHandlebars` but requires it to
+be injected into the DI container (Autofac) along with any templates or inlines
+loaded.
+
+## Styling Templates
+
+The first is to use it to apply a Handlebars theme to a page or text content.
+This would include adding links to the CSS, any javascript, generating menus,
+and common navigation elements.
+
+## Content Templates
+
+The second is used to apply it to the Handlebars inside the text content. This
+is the page-specific content that needs to be resolved. A good example of this
+might be creating a "last five posts" page or embedding some metadata from the
+YAML header into the page.
--- a/src/Nitride.Html/HtmlEntitiesToUnicode.cs
+++ b/src/Nitride.Html/HtmlEntitiesToUnicode.cs
@ -0,0 +1,31 @@
+using System.Collections.Generic;
+using System.Net;
+using Gallium;
+using Nitride.Contents;
+
+namespace Nitride.Html
+{
+    /// <summary>
+    /// Converts the text input that uses HTML entities and turns them into
+    /// Unicode variations.
+    /// </summary>
+    public class HtmlEntitiesToUnicode : NitrideOperationBase
+    {
+        /// <inheritdoc />
+        public override IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            return input
+                .ForEachEntity<ITextContent>(this.ResolveHtmlEntities);
+        }
+
+        private Entity ResolveHtmlEntities(
+            Entity entity,
+            ITextContent content)
+        {
+            string text = content.GetText();
+            string resolved = WebUtility.HtmlDecode(text);
+
+            return entity.SetTextContent(resolved);
+        }
+    }
+}
--- a/src/Nitride.Html/IsHtml.cs
+++ b/src/Nitride.Html/IsHtml.cs
@ -0,0 +1,10 @@
+namespace Nitride.Html
+{
+    /// <summary>
+    /// A marker component that indicates that the entity is an HTML file.
+    /// </summary>
+    public class IsHtml
+    {
+        public static IsHtml Instance { get; } = new();
+    }
+}
--- a/src/Nitride.Html/Nitride.Html.csproj
+++ b/src/Nitride.Html/Nitride.Html.csproj
@ -0,0 +1,31 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net5.0</TargetFramework>
+    </PropertyGroup>
+
+    <PropertyGroup>
+        <Description>An extension to Nitride static site generator to generate HTML output.</Description>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride\Nitride.csproj" />
+    </ItemGroup>
+
+    <!-- Include the source generator -->
+    <PropertyGroup>
+        <EmitCompilerGeneratedFiles>True</EmitCompilerGeneratedFiles>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.Generators\Nitride.Generators.csproj">
+            <OutputItemType>Analyzer</OutputItemType>
+            <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+        </ProjectReference>
+    </ItemGroup>
+
+    <ItemGroup>
+      <PackageReference Include="Gallium" Version="1.0.2" />
+    </ItemGroup>
+
+</Project>
--- a/src/Nitride.Html/NitrideHtmlBuilderExtensions.cs
+++ b/src/Nitride.Html/NitrideHtmlBuilderExtensions.cs
@ -0,0 +1,14 @@
+using Autofac;
+
+namespace Nitride.Html
+{
+    public static class NitrideHtmlBuilderExtensions
+    {
+        public static NitrideBuilder UseHtml(this NitrideBuilder builder)
+        {
+            return builder
+                .ConfigureContainer(
+                    x => x.RegisterModule<NitrideHtmlModule>());
+        }
+    }
+}
--- a/src/Nitride.Html/NitrideHtmlModule.cs
+++ b/src/Nitride.Html/NitrideHtmlModule.cs
@ -0,0 +1,6 @@
+namespace Nitride.Html
+{
+    public class NitrideHtmlModule : NitrideModuleBase
+    {
+    }
+}
--- a/src/Nitride.IO.Tests/AddPathPrefixTests.cs
+++ b/src/Nitride.IO.Tests/AddPathPrefixTests.cs
@ -0,0 +1,48 @@
+using System.Linq;
+using Autofac;
+using Nitride.IO.Contents;
+using Nitride.IO.Paths;
+using Xunit;
+using Xunit.Abstractions;
+using Zio;
+using Zio.FileSystems;
+
+namespace Nitride.IO.Tests
+{
+    public class AddPathPrefixTests : NitrideIOTestsBase
+    {
+        private readonly MemoryFileSystem fileSystem;
+
+        public AddPathPrefixTests(ITestOutputHelper output)
+            : base(output)
+        {
+            this.fileSystem = new MemoryFileSystem();
+            this.fileSystem.CreateFile("/b1.txt");
+            this.fileSystem.CreateFile("/c1.md");
+        }
+
+        [Fact]
+        public void PrefixAllFiles()
+        {
+            // Set up the operation.
+            var readFiles = this.Container.Resolve<ReadFiles.Factory>();
+            var op = new AddPathPrefix("/prefix");
+
+            // Read and replace the paths.
+            IOrderedEnumerable<string> output = readFiles(this.fileSystem)
+                .Read()
+                .Run(op)
+                .Select(x => x.Get<UPath>().ToString())
+                .OrderBy(x => x);
+
+            // Verify the results.
+            Assert.Equal(
+                new[]
+                {
+                    "/prefix/b1.txt",
+                    "/prefix/c1.md",
+                },
+                output);
+        }
+    }
+}
--- a/src/Nitride.IO.Tests/MoveToIndexPathsTests.cs
+++ b/src/Nitride.IO.Tests/MoveToIndexPathsTests.cs
@ -0,0 +1,80 @@
+using System.Linq;
+using Autofac;
+using Nitride.IO.Contents;
+using Nitride.IO.Paths;
+using Xunit;
+using Xunit.Abstractions;
+using Zio;
+using Zio.FileSystems;
+
+namespace Nitride.IO.Tests
+{
+    public class MoveToIndexPathsTests : NitrideIOTestsBase
+    {
+        private readonly MemoryFileSystem fileSystem;
+
+        public MoveToIndexPathsTests(ITestOutputHelper output)
+            : base(output)
+        {
+            this.fileSystem = new MemoryFileSystem();
+            this.fileSystem.CreateDirectory("/c1");
+            this.fileSystem.CreateFile("/a1");
+            this.fileSystem.CreateFile("/b1.txt");
+            this.fileSystem.CreateFile("/c1/index.md");
+            this.fileSystem.CreateFile("/d1.html");
+        }
+
+        [Fact]
+        public void MoveAllFiles()
+        {
+            // Set up the operation.
+            var readFiles = this.Container.Resolve<ReadFiles.Factory>();
+            var op = new MoveToIndexPaths();
+
+            // Read and replace the paths.
+            IOrderedEnumerable<string> output = readFiles(this.fileSystem)
+                .Read()
+                .Run(op)
+                .Select(x => x.Get<UPath>().ToString())
+                .OrderBy(x => x);
+
+            // Verify the results.
+            Assert.Equal(
+                new[]
+                {
+                    "/a1",
+                    "/b1.txt",
+                    "/c1/index.md",
+                    "/d1/index.html",
+                },
+                output);
+        }
+
+        [Fact]
+        public void OverrideCanMoveCallback()
+        {
+            // Set up the operation.
+            var readFiles = this.Container.Resolve<ReadFiles.Factory>();
+            MoveToIndexPaths? op = new MoveToIndexPaths()
+                .WithCanMoveCallback((path) => path.ToString().Contains("a1"));
+
+            // Read and replace the paths.
+            IOrderedEnumerable<string> output = readFiles(this.fileSystem)
+                .Read()
+                .Run(op)
+                .Select(x => x.Get<UPath>().ToString())
+                .OrderBy(x => x);
+
+            // Verify the results.
+            Assert.Equal(
+                new[]
+                {
+                    "/a1/index",
+                    "/b1.txt",
+                    "/c1/index.md",
+                    "/d1.html",
+                },
+                output);
+        }
+    }
+}
--- a/src/Nitride.IO.Tests/Nitride.IO.Tests.csproj
+++ b/src/Nitride.IO.Tests/Nitride.IO.Tests.csproj
@ -0,0 +1,29 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net5.0</TargetFramework>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.IO\Nitride.IO.csproj" />
+        <ProjectReference Include="..\Nitride.Tests\Nitride.Tests.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Gallium" Version="1.0.2" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.10.0" />
+        <PackageReference Include="JunitXml.TestLogger" Version="2.1.81" />
+        <PackageReference Include="xunit" Version="2.4.1" />
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
+        <PackageReference Include="Zio" Version="0.12.0" />
+        <PackageReference Include="coverlet.collector" Version="3.0.3">
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+            <PrivateAssets>all</PrivateAssets>
+        </PackageReference>
+    </ItemGroup>
+
+</Project>
--- a/src/Nitride.IO.Tests/NitrideIOTestsBase.cs
+++ b/src/Nitride.IO.Tests/NitrideIOTestsBase.cs
@ -0,0 +1,21 @@
+using Autofac;
+using Nitride.Tests;
+using Xunit.Abstractions;
+
+namespace Nitride.IO.Tests
+{
+    public abstract class NitrideIOTestsBase : NitrideTestsBase
+    {
+        protected NitrideIOTestsBase(ITestOutputHelper output)
+            : base(output)
+        {
+        }
+
+        /// <inheritdoc />
+        protected override void ConfigureContainer(ContainerBuilder builder)
+        {
+            base.ConfigureContainer(builder);
+            builder.RegisterModule<NitrideIOModule>();
+        }
+    }
+}
--- a/src/Nitride.IO.Tests/ReadFilesTests.cs
+++ b/src/Nitride.IO.Tests/ReadFilesTests.cs
@ -0,0 +1,97 @@
+using System.Linq;
+using Autofac;
+using Nitride.IO.Contents;
+using Xunit;
+using Xunit.Abstractions;
+using Zio;
+using Zio.FileSystems;
+
+namespace Nitride.IO.Tests
+{
+    /// <summary>
+    /// Tests the functionality of the ReadFiles().
+    /// </summary>
+    public class ReadFilesTests : NitrideIOTestsBase
+    {
+        private readonly MemoryFileSystem fileSystem;
+
+        public ReadFilesTests(ITestOutputHelper output)
+            : base(output)
+        {
+            this.fileSystem = new MemoryFileSystem();
+            this.fileSystem.CreateDirectory("/b1");
+            this.fileSystem.CreateDirectory("/c1");
+            this.fileSystem.CreateDirectory("/c1/c2");
+            this.fileSystem.CreateDirectory("/d1");
+            this.fileSystem.WriteAllText("/a.txt", "File A");
+            this.fileSystem.WriteAllText("/b1/b.md", "File B");
+            this.fileSystem.WriteAllText("/c1/c.txt", "File C");
+            this.fileSystem.WriteAllText("/c1/c2/e.md", "File C");
+        }
+
+        [Fact]
+        public void ReadAllFiles()
+        {
+            // Set up the operation.
+            var factory = this.Container.Resolve<ReadFiles.Factory>();
+            ReadFiles op = factory(this.fileSystem);
+
+            // Verify the paths.
+            IOrderedEnumerable<string> paths = op.Read()
+                .Select(x => x.Get<UPath>())
+                .Select(x => (string)x)
+                .OrderBy(x => x);
+
+            Assert.Equal(
+                new[]
+                {
+                    "/a.txt",
+                    "/b1/b.md",
+                    "/c1/c.txt",
+                    "/c1/c2/e.md",
+                },
+                paths);
+        }
+
+        [Fact]
+        public void ReadGlob()
+        {
+            // Set up the operation.
+            var factory = this.Container.Resolve<ReadFiles.Factory>();
+            ReadFiles op = factory(this.fileSystem);
+
+            // Verify the paths.
+            IOrderedEnumerable<string> paths = op.Read("/*.txt")
+                .Select(x => (string)x.Get<UPath>())
+                .OrderBy(x => x);
+
+            Assert.Equal(
+                new[]
+                {
+                    "/a.txt",
+                },
+                paths);
+        }
+
+        [Fact]
+        public void ReadGlobWithSubdirectories()
+        {
+            // Set up the operation.
+            var factory = this.Container.Resolve<ReadFiles.Factory>();
+            ReadFiles op = factory(this.fileSystem);
+
+            // Verify the paths.
+            IOrderedEnumerable<string> paths = op.Read("**/*.txt")
+                .Select(x => (string)x.Get<UPath>())
+                .OrderBy(x => x);
+
+            Assert.Equal(
+                new[]
+                {
+                    "/a.txt",
+                    "/c1/c.txt",
+                },
+                paths);
+        }
+    }
+}
--- a/src/Nitride.IO.Tests/RemovePathPrefixTests.cs
+++ b/src/Nitride.IO.Tests/RemovePathPrefixTests.cs
@ -0,0 +1,50 @@
+using System.Linq;
+using Autofac;
+using Nitride.IO.Contents;
+using Nitride.IO.Paths;
+using Xunit;
+using Xunit.Abstractions;
+using Zio;
+using Zio.FileSystems;
+
+namespace Nitride.IO.Tests
+{
+    public class RemovePathPrefixTests : NitrideIOTestsBase
+    {
+        private readonly MemoryFileSystem fileSystem;
+
+        public RemovePathPrefixTests(ITestOutputHelper output)
+            : base(output)
+        {
+            this.fileSystem = new MemoryFileSystem();
+            this.fileSystem.CreateDirectory("/a");
+            this.fileSystem.CreateDirectory("/a/a");
+            this.fileSystem.CreateFile("/a/b1.txt");
+            this.fileSystem.CreateFile("/a/a/c1.md");
+        }
+
+        [Fact]
+        public void PrefixAllFiles()
+        {
+            // Set up the operation.
+            var readFiles = this.Container.Resolve<ReadFiles.Factory>();
+            var op = new RemovePathPrefix("/a");
+
+            // Read and replace the paths.
+            IOrderedEnumerable<string> output = readFiles(this.fileSystem)
+                .Read()
+                .Run(op)
+                .Select(x => x.Get<UPath>().ToString())
+                .OrderBy(x => x);
+
+            // Verify the results.
+            Assert.Equal(
+                new[]
+                {
+                    "/a/c1.md",
+                    "/b1.txt",
+                },
+                output);
+        }
+    }
+}
--- a/src/Nitride.IO.Tests/WriteFilesTest.cs
+++ b/src/Nitride.IO.Tests/WriteFilesTest.cs
@ -0,0 +1,63 @@
+using System.Linq;
+using Autofac;
+using Nitride.Contents;
+using Nitride.IO.Contents;
+using Xunit;
+using Xunit.Abstractions;
+using Zio;
+using Zio.FileSystems;
+
+namespace Nitride.IO.Tests
+{
+    /// <summary>
+    /// Tests the functionality of the WriteFiles().
+    /// </summary>
+    public class WriteFilesTest : NitrideIOTestsBase
+    {
+        private readonly MemoryFileSystem fileSystem;
+
+        public WriteFilesTest(ITestOutputHelper output)
+            : base(output)
+        {
+            this.fileSystem = new MemoryFileSystem();
+            this.fileSystem.CreateDirectory("/b1");
+            this.fileSystem.CreateDirectory("/c1");
+            this.fileSystem.CreateDirectory("/c1/c2");
+            this.fileSystem.CreateDirectory("/d1");
+            this.fileSystem.WriteAllText("/a.txt", "File A");
+            this.fileSystem.WriteAllText("/b1/b.md", "File B");
+            this.fileSystem.WriteAllText("/c1/c2/e.md", "File E");
+        }
+
+        [Fact]
+        public void WriteAllFiles()
+        {
+            // Set up the operation.
+            var output = new MemoryFileSystem();
+            var readFiles = this.Container.Resolve<ReadFiles.Factory>();
+            var factory = this.Container.Resolve<WriteFiles.Factory>();
+            WriteFiles op = factory(output);
+
+            // Read and write out the files. We switch one of the files to be
+            // text content to make sure that works too.
+            readFiles(this.fileSystem)
+                .Read()
+                .Select(
+                    x => x.Get<UPath>() == "/b1/b.md"
+                        ? x.SetTextContent(
+                            ((ITextContentConvertable)x.GetBinaryContent())
+                            .ToTextContent())
+                        : x)
+                .Run(op);
+
+            // Verify the results.
+            Assert.True(output.FileExists("/a.txt"));
+            Assert.True(output.FileExists("/b1/b.md"));
+            Assert.True(output.FileExists("/c1/c2/e.md"));
+
+            Assert.Equal("File A", output.ReadAllText("/a.txt"));
+            Assert.Equal("File B", output.ReadAllText("/b1/b.md"));
+            Assert.Equal("File E", output.ReadAllText("/c1/c2/e.md"));
+        }
+    }
+}
--- a/src/Nitride.IO/Contents/FileEntryBinaryContent.cs
+++ b/src/Nitride.IO/Contents/FileEntryBinaryContent.cs
@ -0,0 +1,35 @@
+using System.IO;
+using Nitride.Contents;
+using Zio;
+
+namespace Nitride.IO.Contents
+{
+    /// <summary>
+    /// Contains a wrapper around a file entry to retrieve the binary data.
+    /// </summary>
+    public class FileEntryBinaryContent
+        : IBinaryContent, ITextContentConvertable
+    {
+        private readonly FileEntry entry;
+
+        public FileEntryBinaryContent(FileEntry entry)
+        {
+            this.entry = entry;
+        }
+
+        /// <inheritdoc />
+        public Stream GetStream()
+        {
+            return this.entry.Open(
+                FileMode.Open,
+                FileAccess.Read,
+                FileShare.Read);
+        }
+
+        /// <inheritdoc />
+        public ITextContent ToTextContent()
+        {
+            return new FileEntryTextContent(this.entry);
+        }
+    }
+}
--- a/src/Nitride.IO/Contents/FileEntryTextContent.cs
+++ b/src/Nitride.IO/Contents/FileEntryTextContent.cs
@ -0,0 +1,38 @@
+using System.IO;
+using System.Text;
+using Nitride.Contents;
+using Zio;
+
+namespace Nitride.IO.Contents
+{
+    /// <summary>
+    /// Contains a wrapper around a file entry to retrieve text data.
+    /// </summary>
+    public class FileEntryTextContent
+        : ITextContent, IBinaryContentConvertable
+    {
+        private readonly FileEntry entry;
+
+        public FileEntryTextContent(FileEntry entry)
+        {
+            this.entry = entry;
+        }
+
+        /// <inheritdoc />
+        public TextReader GetReader()
+        {
+            return new StreamReader(
+                this.entry.Open(
+                    FileMode.Open,
+                    FileAccess.Read,
+                    FileShare.Read),
+                Encoding.UTF8);
+        }
+
+        /// <inheritdoc />
+        public IBinaryContent ToBinaryContent()
+        {
+            return new FileEntryBinaryContent(this.entry);
+        }
+    }
+}
--- a/src/Nitride.IO/Contents/ReadFiles.cs
+++ b/src/Nitride.IO/Contents/ReadFiles.cs
@ -0,0 +1,89 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using DotNet.Globbing;
+using Gallium;
+using Nitride.Contents;
+using Zio;
+
+namespace Nitride.IO.Contents
+{
+    /// <summary>
+    /// A module that reads files from the file system and wraps them in an
+    /// entity with the following components: UPath, IContent.
+    /// </summary>
+    public class ReadFiles : FileSystemOperation
+    {
+        public ReadFiles(IFileSystem fileSystem)
+            : base(fileSystem)
+        {
+        }
+
+        /// <summary>
+        /// Primary method for creating a read file.
+        /// </summary>
+        public delegate ReadFiles Factory(IFileSystem fileSystem);
+
+        /// <summary>
+        /// Reads all files from the file system and returns them.
+        /// </summary>
+        /// <returns>A populated collection of entities.</returns>
+        public IEnumerable<Entity> Read(
+            UPath path = new(),
+            string searchPattern = "*",
+            SearchOption search = SearchOption.AllDirectories)
+        {
+            // Normalize the path.
+            path = path == new UPath() ? "/" : path;
+
+            //  Search for the file and wrap the results.
+            IEnumerable<FileEntry> files = this.FileSystem
+                .EnumerateFileEntries(path, searchPattern, search);
+            IEnumerable<Entity> entities = files.Select(this.ToEntity);
+
+            return entities;
+        }
+
+        /// <summary>
+        /// Reads all files from the file system and returns them.
+        /// </summary>
+        /// <returns>A populated collection of entities.</returns>
+        public IEnumerable<Entity> Read(string glob)
+        {
+            Glob parsed = Glob.Parse(glob);
+
+            return this.Read(parsed);
+        }
+
+        /// <summary>
+        /// Reads all files from the file system, filtering them out by the
+        /// minimatch pattern (as defined by DotNet.Blob).
+        /// </summary>
+        /// <returns>A populated collection of entities.</returns>
+        public IEnumerable<Entity> Read(Glob glob)
+        {
+            IEnumerable<FileEntry> files = this.FileSystem
+                .EnumerateFileEntries("/", "*.*", SearchOption.AllDirectories)
+                .Where(x => glob.IsMatch(x.Path.ToString()));
+            IEnumerable<Entity> entities = files.Select(this.ToEntity);
+
+            return entities;
+        }
+
+        /// <summary>
+        /// Creates an entity with the standard components for all Zio-based
+        /// files. This attaches the file's path relative to the file system
+        /// and a way of accessing the content from the file system.
+        /// </summary>
+        /// <param name="file">The Zio file entry.</param>
+        /// <returns>An Entity with appropriate content.</returns>
+        private Entity ToEntity(FileEntry file)
+        {
+            Entity entity = new Entity()
+                .Set(file.Path)
+                .SetBinaryContent(new FileEntryBinaryContent(file));
+
+            return entity;
+        }
+    }
+}
--- a/src/Nitride.IO/Contents/WriteFiles.cs
+++ b/src/Nitride.IO/Contents/WriteFiles.cs
@ -0,0 +1,220 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using Gallium;
+using Nitride.Contents;
+using Serilog;
+using Zio;
+
+namespace Nitride.IO.Contents
+{
+    /// <summary>
+    /// An operation that writes out entities to a file system.
+    /// </summary>
+    [WithProperties]
+    public partial class WriteFiles : FileSystemOperation, INitrideOperation
+    {
+        private readonly ILogger logger;
+
+        private Dictionary<Type, Func<IContent, Stream>> factories;
+
+        public WriteFiles(
+            IFileSystem fileSystem,
+            ILogger logger)
+            : base(fileSystem)
+        {
+            this.logger = logger.ForContext<WriteFiles>();
+            this.factories = new Dictionary<Type, Func<IContent, Stream>>
+            {
+                [typeof(IBinaryContent)] = GetBinaryStream,
+                [typeof(ITextContent)] = this.GetTextStream,
+            };
+        }
+
+        /// <summary>
+        /// Primary method for creating a write files operation.
+        /// </summary>
+        public delegate WriteFiles Factory(IFileSystem fileSystem);
+
+        public Dictionary<Type, Func<IContent, Stream>> StreamFactories
+        {
+            get => this.factories;
+            set => this.factories =
+                value ?? throw new ArgumentNullException(nameof(value));
+        }
+
+        /// <summary>
+        /// Gets or sets the encoding to force any text output.
+        /// </summary>
+        public Encoding? TextEncoding { get; set; }
+
+        /// <summary>
+        /// Writes out all the files to the given file system using the paths
+        /// currently stored in the `UPath` component. Only files that have
+        /// a path and a registered writer will be written.
+        /// </summary>
+        /// <param name="entities">The entities to parse.</param>
+        /// <returns>The same list of entities without changes.</returns>
+        public IEnumerable<Entity> Run(IEnumerable<Entity> entities)
+        {
+            // We need the `ToList()` here, otherwise it doesn't work.
+            IEnumerable<Entity> results = entities
+                .ForEachEntity<UPath>(this.Process)
+                .ToList();
+
+            return results;
+        }
+
+        private static Stream GetBinaryStream(IContent content)
+        {
+            return ((IBinaryContent)content).GetStream();
+        }
+
+        private Stream GetTextStream(IContent content)
+        {
+            // See if we can convert the stream first. If that is the case, then
+            // we don't have to load it entirely in memory.
+            if (content is IBinaryContentConvertable convertable)
+            {
+                return convertable.ToBinaryContent().GetStream();
+            }
+
+            // We have the load the text into memory and convert it.
+            var textContent = (ITextContent)content;
+            string text = textContent.GetReader().ReadToEnd();
+            var stream = new MemoryStream();
+            var writer = new StreamWriter(
+                stream,
+                this.TextEncoding ?? Encoding.UTF8);
+
+            writer.Write(text);
+            writer.Flush();
+            stream.Position = 0;
+
+            return stream;
+        }
+
+        /// <summary>
+        /// Internal method for writing out the entity. This handles the
+        /// registered writers to allow for multiple `IContent` types being
+        /// written out automatically.
+        /// </summary>
+        /// <param name="entity">The entity to write out.</param>
+        /// <param name="path">The path of the entity.</param>
+        /// <returns>The entity passed in.</returns>
+        private Entity Process(Entity entity, UPath path)
+        {
+            // See if we have any content. If we don't, then there is nothing
+            // to do.
+            if (!entity.HasContent())
+            {
+                return entity;
+            }
+
+            // First see if we have a factory for the exact type of content.
+            IContent content = entity.GetContent();
+
+            if (this.factories.TryGetValue(
+                content.GetType(),
+                out var getStream))
+            {
+                Stream stream = getStream(content);
+
+                return this.Process(entity, path, stream);
+            }
+
+            // If we have an easy conversion, then use that so we don't have to
+            // walk up the tree looking for one we do have.
+            if (content is IBinaryContentConvertable binaryConvertable
+                && this.factories.TryGetValue(
+                    typeof(IBinaryContent),
+                    out var binaryContent))
+            {
+                Stream stream =
+                    binaryContent(binaryConvertable.ToBinaryContent());
+
+                return this.Process(entity, path, stream);
+            }
+
+            if (content is ITextContentConvertable textConvertable
+                && this.factories.TryGetValue(
+                    typeof(ITextContent),
+                    out var textContent))
+            {
+                Stream stream = textContent(textConvertable.ToTextContent());
+
+                return this.Process(entity, path, stream);
+            }
+
+            // For everything else, we have to find a content that we have a
+            // registered type for by walking up the inheritance tree and
+            // finding the right type.
+            List<Type> types = new() { content.GetType() };
+
+            while (types.Count > 0)
+            {
+                // Check to see if we have any of these types.
+                Func<IContent, Stream>? found = types
+                    .Select(
+                        x => this.factories.TryGetValue(x, out var factory)
+                            ? factory
+                            : null)
+                    .FirstOrDefault(x => x != null);
+
+                if (found != null)
+                {
+                    Stream stream = found(content);
+
+                    return this.Process(entity, path, stream);
+                }
+
+                // We didn't find one, so add all the parent types and try
+                // again with the new list.
+                types = types
+                    .SelectMany(
+                        x => new[] { x.BaseType }
+                            .Union(x.GetInterfaces()))
+                    .Where(x => x != null)
+                    .Select(x => x!)
+                    .ToList();
+            }
+
+            // If we got this far, we never found a content to handle.
+            throw new InvalidOperationException(
+                "Cannot write out entity "
+                + path
+                + " because cannot determine how to get a stream out content type "
+                + content.GetType().FullName
+                + ". To resolve, register a function to this.StreamFactories.");
+        }
+
+        /// <summary>
+        /// Writes out a stream to the given path in the file system.
+        /// </summary>
+        /// <param name="entity">The entity being written out.</param>
+        /// <param name="path">The path to write out, directories will be created.</param>
+        /// <param name="stream">The stream to write out.</param>
+        /// <returns>The entity passed in.</returns>
+        private Entity Process(Entity entity, UPath path, Stream stream)
+        {
+            // Make sure we have the directory structure.
+            UPath directory = path.GetDirectory();
+
+            if (directory != "/")
+            {
+                this.FileSystem.CreateDirectory(directory);
+            }
+
+            // Write out the file.
+            using Stream fileStream = this.FileSystem.CreateFile(path);
+
+            stream.CopyTo(fileStream);
+            stream.Close();
+
+            // Return the entity because we've written out the files.
+            return entity;
+        }
+    }
+}
--- a/src/Nitride.IO/Directories/ClearDirectory.cs
+++ b/src/Nitride.IO/Directories/ClearDirectory.cs
@ -0,0 +1,82 @@
+using System;
+using System.Collections.Generic;
+using Gallium;
+using Serilog;
+using Zio;
+
+namespace Nitride.IO.Directories
+{
+    /// <summary>
+    /// A Nitride operation that removes the contents of a directory but not
+    /// the directory itself. This is used because some tools don't handle
+    /// when the root directory is removed.
+    /// This will create the top-level directory if it doesn't exist.
+    /// </summary>
+    [WithProperties]
+    public partial class ClearDirectory : FileSystemOperation, INitrideOperation
+    {
+        private readonly ILogger logger;
+
+        public ClearDirectory(
+            ILogger logger,
+            IFileSystem fileSystem)
+            : base(fileSystem)
+        {
+            this.logger = logger.ForContext<ClearDirectory>();
+        }
+
+        /// <summary>
+        /// Gets or sets the path of the directory to clear.
+        /// </summary>
+        public UPath? Path { get; set; }
+
+        public IEnumerable<Entity> Run()
+        {
+            return this.Run(new List<Entity>());
+        }
+
+        /// <inheritdoc />
+        public IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            // This really isn't an input-type of operation, but it can fit
+            // inside one to keep a pattern.
+            if (!this.Path.HasValue)
+            {
+                throw new InvalidOperationException(
+                    nameof(ClearDirectory)
+                    + "cannot be used without setting the path either by the"
+                    + "factory method, the constructor, the property, or "
+                    + "SetPath method.");
+            }
+
+            // See if the directory exists. If it doesn't, then we make it.
+            UPath path = this.Path.Value;
+
+            if (!this.FileSystem.DirectoryExists(path))
+            {
+                this.logger.Information(
+                    "Creating the directory {Path}",
+                    path);
+                this.FileSystem.CreateDirectory(path);
+            }
+
+            // Clear out the contents.
+            IEnumerable<UPath> files = this.FileSystem.EnumerateFiles(path);
+            IEnumerable<UPath> directories =
+                this.FileSystem.EnumerateDirectories(path);
+
+            foreach (UPath file in files)
+            {
+                this.FileSystem.DeleteFile(file);
+            }
+
+            foreach (UPath directory in directories)
+            {
+                this.FileSystem.DeleteDirectory(directory, true);
+            }
+
+            // Just pass the input on.
+            return input;
+        }
+    }
+}
--- a/src/Nitride.IO/FileSystemOperation.cs
+++ b/src/Nitride.IO/FileSystemOperation.cs
@ -0,0 +1,14 @@
+using Zio;
+
+namespace Nitride.IO
+{
+    public abstract class FileSystemOperation
+    {
+        protected FileSystemOperation(IFileSystem fileSystem)
+        {
+            this.FileSystem = fileSystem;
+        }
+
+        protected IFileSystem FileSystem { get; }
+    }
+}
--- a/src/Nitride.IO/Nitride.IO.csproj
+++ b/src/Nitride.IO/Nitride.IO.csproj
@ -0,0 +1,37 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net5.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <RootNamespace>Nitride.IO</RootNamespace>
+    </PropertyGroup>
+
+    <PropertyGroup>
+        <Description>An extension to Nitride static site generator to read and write files.</Description>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Autofac" Version="6.2.0" />
+        <PackageReference Include="DotNet.Glob" Version="3.1.2" />
+        <PackageReference Include="Gallium" Version="1.0.2" />
+        <PackageReference Include="Serilog" Version="2.10.0" />
+        <PackageReference Include="Zio" Version="0.12.0" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride\Nitride.csproj" />
+    </ItemGroup>
+
+    <!-- Include the source generator -->
+    <PropertyGroup>
+        <EmitCompilerGeneratedFiles>True</EmitCompilerGeneratedFiles>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.Generators\Nitride.Generators.csproj">
+            <OutputItemType>Analyzer</OutputItemType>
+            <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+        </ProjectReference>
+    </ItemGroup>
+
+</Project>
--- a/src/Nitride.IO/NitrideIOBuilderExtensions.cs
+++ b/src/Nitride.IO/NitrideIOBuilderExtensions.cs
@ -0,0 +1,14 @@
+using Autofac;
+
+namespace Nitride.IO
+{
+    public static class NitrideIOBuilderExtensions
+    {
+        public static NitrideBuilder UseIO(this NitrideBuilder builder)
+        {
+            return builder
+                .ConfigureContainer(
+                    x => x.RegisterModule<NitrideIOModule>());
+        }
+    }
+}
--- a/src/Nitride.IO/NitrideIOModule.cs
+++ b/src/Nitride.IO/NitrideIOModule.cs
@ -0,0 +1,6 @@
+namespace Nitride.IO
+{
+    public class NitrideIOModule : NitrideModuleBase
+    {
+    }
+}
--- a/src/Nitride.IO/Paths/AddPathPrefix.cs
+++ b/src/Nitride.IO/Paths/AddPathPrefix.cs
@ -0,0 +1,48 @@
+using System;
+using System.Collections.Generic;
+using Gallium;
+using Zio;
+
+namespace Nitride.IO.Paths
+{
+    [WithProperties]
+    public partial class AddPathPrefix : INitrideOperation
+    {
+        public AddPathPrefix()
+        {
+        }
+
+        public AddPathPrefix(UPath pathPrefix)
+        {
+            this.PathPrefix = pathPrefix;
+        }
+
+        /// <summary>
+        /// Gets or sets the prefix for the path operations.
+        /// </summary>
+        public UPath? PathPrefix { get; set; }
+
+        public IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            if (this.PathPrefix == null)
+            {
+                throw new InvalidOperationException(
+                    nameof(AddPathPrefix)
+                    + ".Prefix was not set "
+                    + "(via constructor, property, or SetPrefix) before "
+                    + "Run() was called.");
+            }
+
+            ReplacePaths replacePaths = new ReplacePaths()
+                .WithReplacement(this.RunReplacement);
+
+            return replacePaths.Run(input);
+        }
+
+        private UPath RunReplacement(Entity _, UPath path)
+        {
+            string innerRelativePath = path.ToString().TrimStart('/');
+            return this.PathPrefix!.Value / innerRelativePath;
+        }
+    }
+}
--- a/src/Nitride.IO/Paths/ChangePathExtension.cs
+++ b/src/Nitride.IO/Paths/ChangePathExtension.cs
@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using Gallium;
+using Zio;
+
+namespace Nitride.IO.Paths
+{
+    /// <summary>
+    /// Changes the extension of the paths given.
+    /// </summary>
+    [WithProperties]
+    public partial class ChangePathExtension : INitrideOperation
+    {
+        public ChangePathExtension()
+        {
+        }
+
+        public ChangePathExtension(string extension)
+        {
+            this.Extension = extension;
+        }
+
+        /// <summary>
+        /// Gets or sets the prefix for the path operations.
+        /// </summary>
+        public string? Extension { get; set; }
+
+        public IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            if (this.Extension == null)
+            {
+                throw new InvalidOperationException(
+                    nameof(AddPathPrefix)
+                    + ".Extension was not set "
+                    + "(via constructor, property, or SetExtension) before "
+                    + "Run() was called.");
+            }
+
+            ReplacePaths replacePaths = new ReplacePaths()
+                .WithReplacement(this.RunReplacement);
+
+            return replacePaths.Run(input);
+        }
+
+        private UPath RunReplacement(Entity _, UPath path)
+        {
+            return path.ChangeExtension(this.Extension!);
+        }
+    }
+}
--- a/src/Nitride.IO/Paths/MoveToIndexPaths.cs
+++ b/src/Nitride.IO/Paths/MoveToIndexPaths.cs
@ -0,0 +1,86 @@
+using System;
+using System.Collections.Generic;
+using Gallium;
+using Zio;
+
+namespace Nitride.IO.Paths
+{
+    /// <summary>
+    /// Moves various files to indexes of a direction with the base filename.
+    /// </summary>
+    [WithProperties]
+    public partial class MoveToIndexPaths : INitrideOperation
+    {
+        public MoveToIndexPaths()
+        {
+            this.CanMoveCallback = DefaultCanMoveCallback;
+        }
+
+        /// <summary>
+        /// Gets or sets the callback to determine if the file should be moved.
+        /// This will not be called if the file is already an index.
+        /// </summary>
+        public Func<UPath, bool>? CanMoveCallback { get; set; }
+
+        /// <summary>
+        /// Default implement of the operation moves .html, .htm, .md, and
+        /// .markdown files into their indexes.
+        /// </summary>
+        /// <param name="path"></param>
+        /// <returns>True if the file should move, otherwise false.</returns>
+        public static bool DefaultCanMoveCallback(UPath path)
+        {
+            return path.GetExtensionWithDot() switch
+            {
+                ".htm" => true,
+                ".html" => true,
+                ".md" => true,
+                ".markdown" => true,
+                _ => false,
+            };
+        }
+
+        public IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            if (this.CanMoveCallback == null)
+            {
+                throw new InvalidOperationException(
+                    nameof(MoveToIndexPaths)
+                    + ".CanMoveCallback was not set "
+                    + "(via constructor, property, or SetCanMoveCallback) before "
+                    + "Run() was called.");
+            }
+
+            ReplacePaths replacePaths = new ReplacePaths()
+                .WithReplacement(this.RunReplacement);
+
+            return replacePaths.Run(input);
+        }
+
+        private UPath RunReplacement(Entity _, UPath path)
+        {
+            // See if we are already an index. If that is true, then we don't
+            // have to move any further.
+            string? nameWithoutExtension = path.GetNameWithoutExtension();
+
+            if (nameWithoutExtension is null or "index")
+            {
+                return path;
+            }
+
+            // See if the path should be moved. If it can't, then just stop
+            // processing.
+            if (!this.CanMoveCallback!.Invoke(path))
+            {
+                return path;
+            }
+
+            // Move the file to an index.
+            UPath parent = path.GetDirectory();
+            string? extension = path.GetExtensionWithDot();
+            string index = "index" + extension;
+
+            return parent / nameWithoutExtension / index;
+        }
+    }
+}
--- a/src/Nitride.IO/Paths/RemovePathPrefix.cs
+++ b/src/Nitride.IO/Paths/RemovePathPrefix.cs
@ -0,0 +1,58 @@
+using System;
+using System.Collections.Generic;
+using Gallium;
+using Zio;
+
+namespace Nitride.IO.Paths
+{
+    /// <summary>
+    /// An operation that removes a path prefix from the input.
+    /// </summary>
+    [WithProperties]
+    public partial class RemovePathPrefix : INitrideOperation
+    {
+        public RemovePathPrefix()
+        {
+        }
+
+        public RemovePathPrefix(UPath pathPrefix)
+        {
+            this.PathPrefix = pathPrefix;
+        }
+
+        /// <summary>
+        /// Gets or sets the prefix for the path operations.
+        /// </summary>
+        public UPath? PathPrefix { get; set; }
+
+        public IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            if (this.PathPrefix == null)
+            {
+                throw new InvalidOperationException(
+                    nameof(RemovePathPrefix)
+                    + ".Prefix was not set "
+                    + "(via constructor, property, or SetPrefix) before "
+                    + "Replace() was called.");
+            }
+
+            ReplacePaths replacePaths = new ReplacePaths()
+                .WithReplacement(this.RunReplacement);
+
+            return replacePaths.Run(input);
+        }
+
+        private UPath RunReplacement(Entity _, UPath path)
+        {
+            string normalized = path.ToString();
+            string prefix = this.PathPrefix.ToString()!;
+
+            if (normalized.StartsWith(prefix))
+            {
+                return (UPath)path.ToString().Substring(prefix.Length);
+            }
+
+            return path;
+        }
+    }
+}
--- a/src/Nitride.IO/Paths/ReplacePaths.cs
+++ b/src/Nitride.IO/Paths/ReplacePaths.cs
@ -0,0 +1,59 @@
+using System;
+using System.Collections.Generic;
+using Gallium;
+using Zio;
+
+namespace Nitride.IO.Paths
+{
+    /// <summary>
+    /// A pipeline operation that replaces the UPath of the given entity
+    /// with the results of a lambda output. Entities without a path component
+    /// are passed on without touching.
+    /// </summary>
+    [WithProperties]
+    public partial class ReplacePaths : INitrideOperation
+    {
+        public ReplacePaths()
+        {
+        }
+
+        public ReplacePaths(Func<Entity, UPath, UPath> replacement)
+        {
+            this.Replacement = replacement;
+        }
+
+        /// <summary>
+        /// Gets or sets the replacement callback to alter the paths.
+        /// </summary>
+        public Func<Entity, UPath, UPath>? Replacement { get; set; }
+
+        /// <summary>
+        /// Performs the replacement on the input streams and outputs the
+        /// resulting entities. Only entities that have had their paths changed
+        /// will be updated, the others will be passed on as-is.
+        /// </summary>
+        /// <param name="input">The list of input entities.</param>
+        /// <returns>The output entities.</returns>
+        public IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            if (this.Replacement == null)
+            {
+                throw new InvalidOperationException(
+                    "ReplacePaths.Replacement was not set "
+                    + "(via constructor, property, or SetReplacement) before "
+                    + "Replace() was called.");
+            }
+
+            return input
+                .ForEachEntity<UPath>(
+                    (entity, oldPath) =>
+                    {
+                        UPath newPath = this.Replacement(entity, oldPath);
+
+                        return newPath != oldPath
+                            ? entity.Set(newPath)
+                            : entity;
+                    });
+        }
+    }
+}
--- a/src/Nitride.IO/Paths/UPathExtensions.cs
+++ b/src/Nitride.IO/Paths/UPathExtensions.cs
@ -0,0 +1,41 @@
+using Zio;
+
+namespace Nitride.IO.Paths
+{
+    /// <summary>
+    /// Extension methods for the UPath class.
+    /// </summary>
+    public static class UPathExtensions
+    {
+        /// <summary>
+        /// Gets the directory path, which excludes the directory at the end
+        /// of the path.
+        /// </summary>
+        /// <param name="path">The path to manipulate.</param>
+        /// <returns>A normalized path.</returns>
+        public static string GetDirectoryIndexPath(this UPath path)
+        {
+            if (path.GetNameWithoutExtension() == "index")
+            {
+                return path.GetDirectory().ToString().TrimEnd('/') + "/";
+            }
+
+            return path.ToString();
+        }
+
+        public static string GetParentDirectoryIndexPath(this UPath path)
+        {
+            UPath indexPath = path.GetDirectoryIndexPath();
+            UPath parent = indexPath.GetDirectory();
+
+            if (parent == null!)
+            {
+                parent = "/";
+            }
+
+            string parentPath = parent.ToString().TrimEnd('/') + "/";
+
+            return parentPath;
+        }
+    }
+}
--- a/src/Nitride.IO/README.md
+++ b/src/Nitride.IO/README.md
@ -0,0 +1,31 @@
+# Nitride.IO
+
+This assembly contains the primary system for reading and writing from the disk,
+along with various processes to manipulate paths. It contains three primary
+components:
+
+- File System I/O
+- Path Normalization
+- Disk-Based Content
+
+## File System I/O
+
+Internally, this assembly uses [Zio](https://github.com/xoofx/zio), an file
+system abstraction that also has an in-memory implementation which is ideal for
+running unit tests. Zio also provides a way of treating an arbitrary directory
+as a root directory so all paths are relative to the "root".
+
+## Path Normalization
+
+Zio also provides `UPath`, a normalization class that handles relative and
+absolute paths. Entities that are read from the disk, such as with `ReadFiles`,
+will have a `UPath` component with the path from the file. This component is
+also used to determine the path when writing out the results.
+
+## Disk-Based Content
+
+This assembly also extends the `Nitride.Contents.IBinaryContent` and
+`Nitride.Contents.ITextContent` to have file system based implementations. These
+keep track of the original path and file system regardless of changes made to
+the `UPath` component.
+
--- a/src/Nitride.Javascript/InstallYarn.cs
+++ b/src/Nitride.Javascript/InstallYarn.cs
@ -0,0 +1,110 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using Gallium;
+using Serilog;
+using Zio;
+
+namespace Nitride.Javascript
+{
+    /// <summary>
+    /// Installs Yarn in a given directory if it is missing. If the
+    /// `node_modules` is already there, this step is skipped unless
+    /// ForceInstall is set to true.
+    /// </summary>
+    [WithProperties]
+    public partial class InstallYarn : INitrideOperation
+    {
+        private readonly IFileSystem fileSystem;
+
+        private readonly ILogger logger;
+
+        public InstallYarn(ILogger logger, IFileSystem fileSystem)
+        {
+            this.fileSystem = fileSystem;
+            this.logger = logger.ForContext<InstallYarn>();
+            this.Directory = "/";
+        }
+
+        /// <summary>
+        /// Gets or sets the directory that the install should be run from. This
+        /// is typically the same file as the package.json and the yarn.lock.
+        /// </summary>
+        public UPath? Directory { get; set; }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether the install should be
+        /// forced.
+        /// </summary>
+        public bool ForceInstall { get; set; }
+
+        /// <inheritdoc />
+        public IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            // Make sure we have a sane value.
+            if (!this.Directory.HasValue)
+            {
+                throw new InvalidOperationException(
+                    nameof(InstallYarn)
+                    + ".Directory was not set before Run() was called.");
+            }
+
+            // Make sure the directory exists in case we are the first.
+            UPath directory = this.Directory.Value;
+
+            if (!this.fileSystem.DirectoryExists(directory))
+            {
+                this.logger.Information("Creating directory {Path}", directory);
+                this.fileSystem.CreateDirectory(directory);
+            }
+
+            // Check to see if the directory exists.
+            UPath modulesPath = directory / "node_modules";
+            bool exists = this.fileSystem.DirectoryExists(modulesPath);
+
+            if (exists)
+            {
+                if (!this.ForceInstall)
+                {
+                    this.logger.Debug(
+                        "{Path} already exists, skipping",
+                        modulesPath);
+                    return input;
+                }
+
+                this.logger.Information(
+                    "{Path} already exists, forcing installation",
+                    modulesPath);
+                this.fileSystem.DeleteDirectory(modulesPath, true);
+            }
+
+            // Run Yarn install on the directory. Sadly, Yarn doesn't understand
+            // a C# abstraction layer, so we need the "real" path to work with
+            // these operations.
+            string realPath = this.fileSystem
+                .ConvertPathToInternal(directory);
+
+            // Run the install.
+            string command = YarnHelper.GetYarnCommand();
+            var start = new ProcessStartInfo
+            {
+                FileName = command,
+                Arguments = "install",
+                WorkingDirectory = realPath,
+                RedirectStandardOutput = true,
+            };
+            Process process = Process.Start(start);
+
+            if (process == null)
+            {
+                throw new InvalidOperationException(
+                    "Cannot start yarn install");
+            }
+
+            process.WaitForExit();
+
+            // We are done, so just pass our input on.
+            return input;
+        }
+    }
+}
--- a/src/Nitride.Javascript/Nitride.Javascript.csproj
+++ b/src/Nitride.Javascript/Nitride.Javascript.csproj
@ -0,0 +1,33 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net5.0</TargetFramework>
+    </PropertyGroup>
+
+    <PropertyGroup>
+        <Description>An extension to Nitride static site generator to generate Webpack output.</Description>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.IO\Nitride.IO.csproj" />
+        <ProjectReference Include="..\Nitride\Nitride.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Gallium" Version="1.0.2" />
+        <PackageReference Include="Zio" Version="0.12.0" />
+    </ItemGroup>
+
+    <!-- Include the source generator -->
+    <PropertyGroup>
+        <EmitCompilerGeneratedFiles>True</EmitCompilerGeneratedFiles>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.Generators\Nitride.Generators.csproj">
+            <OutputItemType>Analyzer</OutputItemType>
+            <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+        </ProjectReference>
+    </ItemGroup>
+
+</Project>
--- a/src/Nitride.Javascript/NitrideJavascriptBuilderExtensions.cs
+++ b/src/Nitride.Javascript/NitrideJavascriptBuilderExtensions.cs
@ -0,0 +1,14 @@
+using Autofac;
+
+namespace Nitride.Javascript
+{
+    public static class NitrideJavascriptBuilderExtensions
+    {
+        public static NitrideBuilder UseJavascript(this NitrideBuilder builder)
+        {
+            return builder
+                .ConfigureContainer(
+                    x => x.RegisterModule<NitrideJavascriptModule>());
+        }
+    }
+}
--- a/src/Nitride.Javascript/NitrideJavascriptModule.cs
+++ b/src/Nitride.Javascript/NitrideJavascriptModule.cs
@ -0,0 +1,6 @@
+namespace Nitride.Javascript
+{
+    public class NitrideJavascriptModule : NitrideModuleBase
+    {
+    }
+}
--- a/src/Nitride.Javascript/RunWebpack.cs
+++ b/src/Nitride.Javascript/RunWebpack.cs
@ -0,0 +1,115 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using Gallium;
+using Nitride.IO.Contents;
+using Nitride.IO.Paths;
+using Serilog;
+using Zio;
+
+namespace Nitride.Javascript
+{
+    /// <summary>
+    /// Runs `webpack` in the directory, writing out whatever files need to be
+    /// written.
+    /// </summary>
+    [WithProperties]
+    public partial class RunWebpack : INitrideOperation
+    {
+        private readonly IFileSystem fileSystem;
+
+        private readonly ILogger logger;
+
+        private readonly ReadFiles readFiles;
+
+        public RunWebpack(
+            ILogger logger,
+            IFileSystem fileSystem,
+            ReadFiles readFiles)
+        {
+            this.fileSystem = fileSystem;
+            this.readFiles = readFiles;
+            this.logger = logger.ForContext<RunWebpack>();
+            this.WebpackDirectory = "/";
+        }
+
+        /// <summary>
+        /// Gets or sets the directory that contains the output from the
+        /// webpack execution.
+        /// </summary>
+        public UPath? OutputDirectory { get; set; }
+
+        /// <summary>
+        /// Gets or sets the directory that the install should be run from. This
+        /// is typically the same file as the webpack.config.js.
+        /// </summary>
+        public UPath? WebpackDirectory { get; set; }
+
+        /// <inheritdoc />
+        public IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            // Make sure we have a sane values.
+            if (!this.WebpackDirectory.HasValue)
+            {
+                throw new InvalidOperationException(
+                    nameof(InstallYarn)
+                    + ".WebpackDirectory was not set before Run() was called.");
+            }
+
+            if (!this.OutputDirectory.HasValue)
+            {
+                throw new InvalidOperationException(
+                    nameof(InstallYarn)
+                    + ".OutputDirectory was not set before Run() was called.");
+            }
+
+            // Make sure the directory exists in case we are the first.
+            UPath directory = this.WebpackDirectory.Value;
+
+            if (!this.fileSystem.DirectoryExists(directory))
+            {
+                this.logger.Information("Creating directory {Path}", directory);
+                this.fileSystem.CreateDirectory(directory);
+            }
+
+            // Sadly, Yarn doesn't understand virtual file systems, so we need
+            // the "real" path to the directory for this.
+            string realPath = this.fileSystem
+                .ConvertPathToInternal(directory);
+
+            // Run the install.
+            this.logger.Debug("Running Webpack via Yarn");
+
+            string command = YarnHelper.GetYarnCommand();
+            var start = new ProcessStartInfo
+            {
+                FileName = command,
+                Arguments = "run webpack",
+                WorkingDirectory = realPath,
+                RedirectStandardOutput = true,
+            };
+            Process process = Process.Start(start);
+
+            if (process == null)
+            {
+                throw new InvalidOperationException(
+                    "Cannot start yarn run webpack");
+            }
+
+            process.WaitForExit();
+
+            // We are done and all the output will be written into the
+            // filesystem, so merge it with our input.
+            this.logger.Debug("Adding Webpack output to the pipeline");
+
+            UPath outputDirectory = this.OutputDirectory.Value;
+
+            return input
+                .Union(
+                    this.readFiles
+                        .Read(outputDirectory)
+                        .Run(new RemovePathPrefix(outputDirectory)));
+        }
+    }
+}
--- a/src/Nitride.Javascript/YarnHelper.cs
+++ b/src/Nitride.Javascript/YarnHelper.cs
@ -0,0 +1,34 @@
+using System;
+using System.IO;
+
+namespace Nitride.Javascript
+{
+    /// <summary>
+    /// A helper class for finding how to run or install Yarn.
+    /// </summary>
+    public static class YarnHelper
+    {
+        /// <summary>
+        /// Gets the name of the command to run Yarn.
+        /// </summary>
+        /// <returns>The command to run.</returns>
+        public static string GetYarnCommand()
+        {
+            // Figure out how to run Yarn. This is needed because Windows can't
+            // run the script like the shell can.
+            string command = "yarn";
+            string appData = Path.Combine(
+                Environment.GetFolderPath(
+                    Environment.SpecialFolder.ApplicationData),
+                "npm",
+                "yarn.cmd");
+
+            if (File.Exists(appData))
+            {
+                command = appData;
+            }
+
+            return command;
+        }
+    }
+}
--- a/src/Nitride.Markdown/IdentifyMarkdown.cs
+++ b/src/Nitride.Markdown/IdentifyMarkdown.cs
@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using Gallium;
+using Nitride.Contents;
+using Zio;
+
+namespace Nitride.Markdown
+{
+    /// <summary>
+    /// An operation that identifies Markdown files by their common extensions
+    /// and converts them to text input while also adding the IsMarkdown
+    /// component to identify them.
+    /// </summary>
+    [WithProperties]
+    public partial class IdentifyMarkdown : INitrideOperation
+    {
+        public IdentifyMarkdown()
+        {
+            this.IsMarkdownTest = DefaultIsMarkdown;
+        }
+
+        public Func<Entity, UPath, bool> IsMarkdownTest { get; set; }
+
+        /// <inheritdoc />
+        public IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            return input
+                .ForEachEntity<UPath, ITextContent>(
+                    (entity, path, _) =>
+                    {
+                        // If we aren't a Markdown file, then there is nothing
+                        // we can do about that.
+                        if (!this.IsMarkdownTest(entity, path))
+                        {
+                            return entity;
+                        }
+
+                        // We are already text, so just mark it as Markdown.
+                        entity = entity
+                            .Set(IsMarkdown.Instance);
+
+                        return entity;
+                    })
+                .ForEachEntity<UPath, IBinaryContent>(
+                    (entity, path, binary) =>
+                    {
+                        // If we aren't a Markdown file, then there is nothing
+                        // we can do about that.
+                        if (!this.IsMarkdownTest(entity, path))
+                        {
+                            return entity;
+                        }
+
+                        // Convert the file as a binary.
+                        if (binary is ITextContentConvertable textConvertable)
+                        {
+                            entity = entity
+                                .SetTextContent(textConvertable.ToTextContent())
+                                .Set(IsMarkdown.Instance);
+                        }
+                        else
+                        {
+                            throw new InvalidOperationException(
+                                "Cannot convert a binary content to a "
+                                + "text without ITextContentConvertable.");
+                        }
+
+                        return entity;
+                    });
+        }
+
+        private static bool DefaultIsMarkdown(Entity entity, UPath path)
+        {
+            return (path.GetExtensionWithDot() ?? string.Empty)
+                .ToLowerInvariant() switch
+                {
+                    ".md" => true,
+                    ".markdown" => true,
+                    _ => false,
+                };
+        }
+    }
+}
--- a/src/Nitride.Markdown/IsMarkdown.cs
+++ b/src/Nitride.Markdown/IsMarkdown.cs
@ -0,0 +1,10 @@
+namespace Nitride.Markdown
+{
+    /// <summary>
+    /// A marker class that indicates that the file is a Markdown file.
+    /// </summary>
+    public class IsMarkdown
+    {
+        public static IsMarkdown Instance { get; } = new();
+    }
+}
--- a/src/Nitride.Markdown/MarkdownOperationBase.cs
+++ b/src/Nitride.Markdown/MarkdownOperationBase.cs
@ -0,0 +1,48 @@
+using System;
+using System.Collections.Generic;
+using Gallium;
+using Markdig;
+using Nitride.Contents;
+
+namespace Nitride.Markdown
+{
+    public abstract class MarkdownOperationBase : INitrideOperation
+    {
+        /// <summary>
+        /// Gets or sets an additional callback to configure additional features
+        /// from the baseline Markdown.
+        /// </summary>
+        public Action<MarkdownPipelineBuilder>? ConfigureMarkdown { get; set; }
+
+        /// <inheritdoc />
+        public IEnumerable<Entity> Run(IEnumerable<Entity> input)
+        {
+            // Create the Markdown pipeline used for formatting.
+            var builder = new MarkdownPipelineBuilder();
+
+            this.ConfigureMarkdown?.Invoke(builder);
+
+            MarkdownPipeline options = builder.Build();
+
+            // Process the Markdown files (while passing everything on).
+            return input
+                .ForEachEntity<IsMarkdown, ITextContent>(
+                    (entity, _, content) => this.Convert(
+                        entity,
+                        content,
+                        options));
+        }
+
+        /// <summary>
+        /// Converts the Markdown file into HTML.
+        /// </summary>
+        /// <param name="entity">The entity to convert.</param>
+        /// <param name="markdownContent">The content for this entity.</param>
+        /// <param name="options">The markdown pipeline.</param>
+        /// <returns>A converted entity.</returns>
+        protected abstract Entity Convert(
+            Entity entity,
+            ITextContent markdownContent,
+            MarkdownPipeline options);
+    }
+}
--- a/src/Nitride.Markdown/MarkdownToGemtext.cs
+++ b/src/Nitride.Markdown/MarkdownToGemtext.cs
@ -0,0 +1,40 @@
+using Gallium;
+using Markdig;
+using MfGames.Markdown.Gemtext;
+using Nitride.Contents;
+using Nitride.Gemtext;
+
+namespace Nitride.Markdown
+{
+    /// <summary>
+    /// Converts the input Markdown files into Gemtext using Markdig and
+    /// MfGames.Markdown.Gemtext. This only processes files with a text input
+    /// and the IsMarkdown component.
+    /// </summary>
+    public class MarkdownToGemtext : MarkdownOperationBase
+    {
+        /// <summary>
+        /// Converts the Markdown file into HTML.
+        /// </summary>
+        /// <param name="entity">The entity to convert.</param>
+        /// <param name="markdownContent">The content for this entity.</param>
+        /// <param name="options">The markdown pipeline.</param>
+        /// <returns>A converted entity.</returns>
+        protected override Entity Convert(
+            Entity entity,
+            ITextContent markdownContent,
+            MarkdownPipeline options)
+        {
+            string markdown = markdownContent.GetText();
+            string gemtext = MarkdownGemtext.ToGemtext(markdown, options);
+            var content = new StringTextContent(gemtext);
+
+            entity = entity
+                .SetTextContent(content)
+                .Remove<IsMarkdown>()
+                .Set(IsGemtext.Instance);
+
+            return entity;
+        }
+    }
+}
--- a/src/Nitride.Markdown/MarkdownToHtml.cs
+++ b/src/Nitride.Markdown/MarkdownToHtml.cs
@ -0,0 +1,40 @@
+using Gallium;
+using Markdig;
+using Nitride.Contents;
+using Nitride.Html;
+
+namespace Nitride.Markdown
+{
+    /// <summary>
+    /// Converts the input Markdown files into HTML using Markdig. This only
+    /// processes files with a text input and the IsMarkdown component.
+    /// </summary>
+    public class MarkdownToHtml : MarkdownOperationBase
+    {
+        /// <summary>
+        /// Converts the Markdown file into HTML.
+        /// </summary>
+        /// <param name="entity">The entity to convert.</param>
+        /// <param name="markdownContent">The content for this entity.</param>
+        /// <param name="options">The markdown pipeline.</param>
+        /// <returns>A converted entity.</returns>
+        protected override Entity Convert(
+            Entity entity,
+            ITextContent markdownContent,
+            MarkdownPipeline options)
+        {
+            // Convert the entity to Html.
+            string markdown = markdownContent.GetText();
+            string html = Markdig.Markdown.ToHtml(markdown, options);
+            var htmlContent = new StringTextContent(html);
+
+            entity = entity
+                .SetTextContent(htmlContent)
+                .Remove<IsMarkdown>()
+                .Set(IsHtml.Instance);
+
+            // Return the resulting entity.
+            return entity;
+        }
+    }
+}
--- a/src/Nitride.Markdown/MarkdownToOperationBaseExtension.cs
+++ b/src/Nitride.Markdown/MarkdownToOperationBaseExtension.cs
@ -0,0 +1,22 @@
+using System;
+using Markdig;
+
+namespace Nitride.Markdown
+{
+    /// <summary>
+    /// Extension methods to handle generics while configuring a Markdown
+    /// operation.
+    /// </summary>
+    public static class MarkdownToOperationBaseExtension
+    {
+        public static T WithConfigureMarkdown<T>(
+            this T operation,
+            Action<MarkdownPipelineBuilder>? callback)
+            where T : MarkdownOperationBase
+
+        {
+            operation.ConfigureMarkdown = callback;
+            return operation;
+        }
+    }
+}
--- a/src/Nitride.Markdown/Nitride.Markdown.csproj
+++ b/src/Nitride.Markdown/Nitride.Markdown.csproj
@ -0,0 +1,37 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net5.0</TargetFramework>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <PropertyGroup>
+        <Description>An extension to Nitride static site generator to render Markdown content.</Description>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.Gemtext\Nitride.Gemtext.csproj" />
+        <ProjectReference Include="..\Nitride.Html\Nitride.Html.csproj" />
+        <ProjectReference Include="..\Nitride\Nitride.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Gallium" Version="1.0.2" />
+        <PackageReference Include="Markdig" Version="0.25.0" />
+        <PackageReference Include="MfGames.Markdown.Gemtext" Version="1.0.0" />
+        <PackageReference Include="Zio" Version="0.12.0" />
+    </ItemGroup>
+
+    <!-- Include the source generator -->
+    <PropertyGroup>
+        <EmitCompilerGeneratedFiles>True</EmitCompilerGeneratedFiles>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.Generators\Nitride.Generators.csproj">
+            <OutputItemType>Analyzer</OutputItemType>
+            <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+        </ProjectReference>
+    </ItemGroup>
+
+</Project>
--- a/src/Nitride.Markdown/NitrideMarkdownBuilderExtensions.cs
+++ b/src/Nitride.Markdown/NitrideMarkdownBuilderExtensions.cs
@ -0,0 +1,14 @@
+using Autofac;
+
+namespace Nitride.Markdown
+{
+    public static class NitrideMarkdownBuilderExtensions
+    {
+        public static NitrideBuilder UseMarkdown(this NitrideBuilder builder)
+        {
+            return builder
+                .ConfigureContainer(
+                    x => x.RegisterModule<NitrideMarkdownModule>());
+        }
+    }
+}
--- a/src/Nitride.Markdown/NitrideMarkdownModule.cs
+++ b/src/Nitride.Markdown/NitrideMarkdownModule.cs
@ -0,0 +1,6 @@
+namespace Nitride.Markdown
+{
+    public class NitrideMarkdownModule : NitrideModuleBase
+    {
+    }
+}
--- a/src/Nitride.Slugs/ISlugProvider.cs
+++ b/src/Nitride.Slugs/ISlugProvider.cs
@ -0,0 +1,15 @@
+namespace Nitride.Slugs
+{
+    /// <summary>
+    /// An interface that provides slugs for various paths.
+    /// </summary>
+    public interface ISlugProvider
+    {
+        /// <summary>
+        /// Converts the given input into a slug.
+        /// </summary>
+        /// <param name="input">The input string to normalize.</param>
+        /// <returns>The resulting slug.</returns>
+        string ToSlug(string input);
+    }
+}
--- a/src/Nitride.Slugs/Nitride.Slugs.csproj
+++ b/src/Nitride.Slugs/Nitride.Slugs.csproj
@ -0,0 +1,31 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net5.0</TargetFramework>
+    </PropertyGroup>
+
+    <PropertyGroup>
+        <Description>An extension to Nitride static site generator to generate slugs.</Description>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Slugify.Core" Version="3.0.0"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride\Nitride.csproj"/>
+    </ItemGroup>
+
+    <!-- Include the source generator -->
+    <PropertyGroup>
+        <EmitCompilerGeneratedFiles>True</EmitCompilerGeneratedFiles>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\Nitride.Generators\Nitride.Generators.csproj">
+            <OutputItemType>Analyzer</OutputItemType>
+            <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+        </ProjectReference>
+    </ItemGroup>
+
+</Project>
--- a/src/Nitride.Slugs/NitrideSlugsBuilderExtensions.cs
+++ b/src/Nitride.Slugs/NitrideSlugsBuilderExtensions.cs
@ -0,0 +1,28 @@
+using System;
+using Autofac;
+
+namespace Nitride.Slugs
+{
+    public static class NitrideSlugsBuilderExtensions
+    {
+        public static NitrideBuilder UseSlugs(
+            this NitrideBuilder builder,
+            ISlugProvider slugs)
+        {
+            if (slugs == null)
+            {
+                throw new ArgumentNullException(nameof(slugs));
+            }
+
+            return builder
+                .ConfigureContainer(
+                    x =>
+                    {
+                        x.RegisterInstance(slugs)
+                            .As<ISlugProvider>()
+                            .SingleInstance();
+                        x.RegisterModule<NitrideSlugsModule>();
+                    });
+        }
+    }
+}
--- a/src/Nitride.Slugs/NitrideSlugsModule.cs
+++ b/src/Nitride.Slugs/NitrideSlugsModule.cs
@ -0,0 +1,8 @@
+using Autofac;
+
+namespace Nitride.Slugs
+{
+    public class NitrideSlugsModule : Module
+    {
+    }
+}
--- a/src/Nitride.Slugs/SimpleSlugProvider.cs
+++ b/src/Nitride.Slugs/SimpleSlugProvider.cs
@ -0,0 +1,78 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using Slugify;
+
+namespace Nitride.Slugs
+{
+    /// <summary>
+    /// A default implementation of ISlugProvider.
+    /// </summary>
+    public class SimpleSlugProvider : ISlugProvider, IEnumerable<string>
+    {
+        private readonly List<(string, string)> replacements;
+
+        public SimpleSlugProvider()
+        {
+            this.replacements = new List<(string, string)>();
+        }
+
+        public SimpleSlugProvider(IDictionary<string, string> replacements)
+            : this()
+        {
+            foreach (KeyValuePair<string, string> pair in replacements)
+            {
+                this.Add(pair.Key, pair.Value);
+            }
+        }
+
+        /// <summary>
+        /// Adds a replacement for the resulting slug.
+        /// </summary>
+        /// <param name="search">The text to search for.</param>
+        /// <param name="replace">The replacement string.</param>
+        public void Add(string search, string replace)
+        {
+            this.replacements.Add((search, replace));
+        }
+
+        /// <inheritdoc />
+        public IEnumerator<string> GetEnumerator()
+        {
+            return this.replacements
+                .Select(x => x.Item1)
+                .GetEnumerator();
+        }
+
+        /// <inheritdoc />
+        public virtual string ToSlug(string input)
+        {
+            // If we have null or whitespace, we have a problem.
+            if (string.IsNullOrWhiteSpace(input))
+            {
+                throw new ArgumentException(
+                    "Cannot have a blank or null input",
+                    nameof(input));
+            }
+
+            // Create a slug..
+            var helper = new SlugHelper();
+            string output = helper.GenerateSlug(input);
+
+            // Perform any additional replacements.
+            foreach ((string search, string replace) in this.replacements)
+            {
+                output = output.Replace(search, replace);
+            }
+
+            return output;
+        }
+
+        /// <inheritdoc />
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return this.GetEnumerator();
+        }
+    }
+}
--- a/src/Nitride.Slugs/UnicodeNormalizingSlugProvider.cs
+++ b/src/Nitride.Slugs/UnicodeNormalizingSlugProvider.cs
@ -0,0 +1,58 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+
+namespace Nitride.Slugs
+{
+    /// <summary>
+    /// Extends the slug provider to strip out accented characters for
+    /// a normalized form.
+    /// </summary>
+    public class UnicodeNormalizingSlugProvider : SimpleSlugProvider
+    {
+        /// <inheritdoc />
+        public UnicodeNormalizingSlugProvider()
+        {
+        }
+
+        /// <inheritdoc />
+        public UnicodeNormalizingSlugProvider(
+            IDictionary<string, string> replacements)
+            : base(replacements)
+        {
+        }
+
+        /// <inheritdoc />
+        public override string ToSlug(string input)
+        {
+            // If we have null or whitespace, we have a problem.
+            if (string.IsNullOrWhiteSpace(input))
+            {
+                throw new ArgumentException(
+                    "Cannot have a blank or null input",
+                    nameof(input));
+            }
+
+            // Normalize the Unicode objects.
+            // Strip out the accents. This is a cheesy way of doing so.
+            char[] chars = input
+                .Normalize(NormalizationForm.FormD)
+                .Where(this.IsNonSpacingMark)
+                .ToArray();
+            string normalized = new string(chars)
+                .Normalize(NormalizationForm.FormC);
+
+            // Return the base implementation.
+            return base.ToSlug(normalized);
+        }
+
+        private bool IsNonSpacingMark(char c)
+        {
+            UnicodeCategory category = CharUnicodeInfo.GetUnicodeCategory(c);
+
+            return category != UnicodeCategory.NonSpacingMark;
+        }
+    }
+}
--- a/Show more
+++ b/Show more