Initial commit

.gitignore

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+.vs/
+bin/
+obj/
+.DS_Store
+

HighlightNonAscii.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.1.32414.318
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HighlightNonAscii", "HighlightNonAscii\HighlightNonAscii.csproj", "{32ECE961-F594-46EF-8922-588CC18EA929}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{64CEA342-BF64-436E-8D62-9CD6B3E713D9}"
+	ProjectSection(SolutionItems) = preProject
+		LICENSE = LICENSE
+		README.md = README.md
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Debug|x86 = Debug|x86
+		Release|Any CPU = Release|Any CPU
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{32ECE961-F594-46EF-8922-588CC18EA929}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{32ECE961-F594-46EF-8922-588CC18EA929}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{32ECE961-F594-46EF-8922-588CC18EA929}.Debug|x86.ActiveCfg = Debug|x86
+		{32ECE961-F594-46EF-8922-588CC18EA929}.Debug|x86.Build.0 = Debug|x86
+		{32ECE961-F594-46EF-8922-588CC18EA929}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{32ECE961-F594-46EF-8922-588CC18EA929}.Release|Any CPU.Build.0 = Release|Any CPU
+		{32ECE961-F594-46EF-8922-588CC18EA929}.Release|x86.ActiveCfg = Release|x86
+		{32ECE961-F594-46EF-8922-588CC18EA929}.Release|x86.Build.0 = Release|x86
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {A550F327-D73E-4ACA-8C08-8EB1395C1B75}
+	EndGlobalSection
+EndGlobal

HighlightNonAscii/HighlightNonAscii.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <MinimumVisualStudioVersion>17.0</MinimumVisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+  </PropertyGroup>
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectTypeGuids>{82b43b9b-a64c-4715-b499-d71e9ca2bd60};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ProjectGuid>{32ECE961-F594-46EF-8922-588CC18EA929}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Enyim.Extensions.HighlightNonAscii</RootNamespace>
+    <AssemblyName>HighlightNonAscii</AssemblyName>
+    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
+    <GeneratePkgDefFile>true</GeneratePkgDefFile>
+    <UseCodebase>true</UseCodebase>
+    <IncludeAssemblyInVSIXContainer>true</IncludeAssemblyInVSIXContainer>
+    <IncludeDebugSymbolsInVSIXContainer>false</IncludeDebugSymbolsInVSIXContainer>
+    <IncludeDebugSymbolsInLocalVSIXDeployment>false</IncludeDebugSymbolsInLocalVSIXDeployment>
+    <CopyBuildOutputToOutputDirectory>true</CopyBuildOutputToOutputDirectory>
+    <CopyOutputSymbolsToOutputDirectory>true</CopyOutputSymbolsToOutputDirectory>
+    <StartAction>Program</StartAction>
+    <StartProgram Condition="'$(DevEnvDir)' != ''">$(DevEnvDir)devenv.exe</StartProgram>
+    <StartArguments>/rootsuffix Exp</StartArguments>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="NonAsciiTaggerProvider.cs" />
+    <Compile Include="NonAsciiHighlightFormatDefinition.cs" />
+    <Compile Include="NonAsciiHighlightTag.cs" />
+    <Compile Include="NonAsciiTagger.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="HighlightNonAsciiPackage.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="..\LICENSE">
+      <Link>LICENSE</Link>
+      <IncludeInVSIX>true</IncludeInVSIX>
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+    <None Include="source.extension.vsixmanifest">
+      <SubType>Designer</SubType>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
+    <Reference Include="System" />
+    <Reference Include="System.ComponentModel.Composition" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Xaml" />
+    <Reference Include="System.Xml" />
+    <Reference Include="WindowsBase" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.VisualStudio.SDK" Version="17.0.31902.203" ExcludeAssets="runtime" />
+    <PackageReference Include="Microsoft.VSSDK.BuildTools" Version="17.1.4058" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Import Project="$(VSToolsPath)\VSSDK\Microsoft.VsSDK.targets" Condition="'$(VSToolsPath)' != ''" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

HighlightNonAscii/HighlightNonAsciiPackage.cs

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+using System;
+using System.Linq;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Threading;
+using System.Threading.Tasks;
+
+using Microsoft.VisualStudio.Shell;
+
+namespace Enyim.Extensions.HighlightNonAscii
+{
+    /// <summary>
+    /// This is the class that implements the package exposed by this assembly.
+    /// </summary>
+    /// <remarks>
+    /// <para>
+    /// The minimum requirement for a class to be considered a valid package for Visual Studio
+    /// is to implement the IVsPackage interface and register itself with the shell.
+    /// This package uses the helper classes defined inside the Managed Package Framework (MPF)
+    /// to do it: it derives from the Package class that provides the implementation of the
+    /// IVsPackage interface and uses the registration attributes defined in the framework to
+    /// register itself and its components with the shell. These attributes tell the pkgdef creation
+    /// utility what data to put into .pkgdef file.
+    /// </para>
+    /// <para>
+    /// To get loaded into VS, the package must be referred by &lt;Asset Type="Microsoft.VisualStudio.VsPackage" ...&gt; in .vsixmanifest file.
+    /// </para>
+    /// </remarks>
+    [PackageRegistration(UseManagedResourcesOnly = true, AllowsBackgroundLoading = true)]
+    [Guid(HighlightNonAsciiPackage.PackageGuidString)]
+    public sealed class HighlightNonAsciiPackage : AsyncPackage
+    {
+        /// <summary>
+        /// HighlightNonAsciiPackage GUID string.
+        /// </summary>
+        public const string PackageGuidString = "eaf80dd5-5dfd-4d25-a572-41f19f161eea";
+
+        #region Package Members
+
+        /// <summary>
+        /// Initialization of the package; this method is called right after the package is sited, so this is the place
+        /// where you can put all the initialization code that rely on services provided by VisualStudio.
+        /// </summary>
+        /// <param name="cancellationToken">A cancellation token to monitor for initialization cancellation, which can occur when VS is shutting down.</param>
+        /// <param name="progress">A provider for progress updates.</param>
+        /// <returns>A task representing the async work of package initialization, or an already completed task if there is none. Do not return null from this method.</returns>
+        protected override async Task InitializeAsync(CancellationToken cancellationToken, IProgress<ServiceProgressData> progress)
+        {
+            // When initialized asynchronously, the current thread may be a background thread at this point.
+            // Do any initialization that requires the UI thread after switching to the UI thread.
+            await this.JoinableTaskFactory.SwitchToMainThreadAsync(cancellationToken);
+        }
+
+        #endregion
+    }
+}

HighlightNonAscii/NonAsciiHighlightFormatDefinition.cs

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+using System;
+using System.Linq;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.Windows.Media;
+
+using Microsoft.VisualStudio.Text.Classification;
+using Microsoft.VisualStudio.Utilities;
+
+namespace Enyim.Extensions.HighlightNonAscii
+{
+    [Export(typeof(EditorFormatDefinition))]
+    [Name(NonAsciiHighlightFormatDefinition.TAG)]
+    [UserVisible(true)]
+    internal class NonAsciiHighlightFormatDefinition : MarkerFormatDefinition
+    {
+        public const string TAG = "MarkerFormatDefinition/" + nameof(NonAsciiHighlightFormatDefinition);
+
+        public NonAsciiHighlightFormatDefinition()
+        {
+            ForegroundColor = Colors.Red;
+            BackgroundColor = Colors.LightSalmon;
+            DisplayName = "Highlight Non-Ascii";
+            ZOrder = 100;
+        }
+    }
+}

HighlightNonAscii/NonAsciiHighlightTag.cs

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+using System;
+using System.Linq;
+using System.Collections.Generic;
+
+using Microsoft.VisualStudio.Text.Tagging;
+
+namespace Enyim.Extensions.HighlightNonAscii
+{
+    internal class NonAsciiHighlightTag : TextMarkerTag
+    {
+        public NonAsciiHighlightTag() : base(NonAsciiHighlightFormatDefinition.TAG)
+        {
+        }
+    }
+}

HighlightNonAscii/NonAsciiTagger.cs

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+using System;
+using System.Linq;
+using System.Collections.Generic;
+
+using Microsoft.VisualStudio.Text;
+using Microsoft.VisualStudio.Text.Tagging;
+
+namespace Enyim.Extensions.HighlightNonAscii
+{
+    internal class NonAsciiTagger : ITagger<NonAsciiHighlightTag>
+    {
+        public event EventHandler<SnapshotSpanEventArgs> TagsChanged;
+
+        public IEnumerable<ITagSpan<NonAsciiHighlightTag>> GetTags(NormalizedSnapshotSpanCollection spans)
+        {
+            foreach (var span in spans)
+            {
+                for (var i = span.Start.Position; i < span.End.Position; i++)
+                {
+                    var c = span.Snapshot[i];
+                    if (c > 127)
+                    {
+                        yield return new TagSpan<NonAsciiHighlightTag>(new SnapshotSpan(new SnapshotPoint(span.Snapshot, i), 1), new NonAsciiHighlightTag());
+                    }
+                }
+            }
+        }
+    }
+}

HighlightNonAscii/NonAsciiTaggerProvider.cs

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+using System;
+using System.Linq;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+
+using Microsoft.VisualStudio.Text;
+using Microsoft.VisualStudio.Text.Editor;
+using Microsoft.VisualStudio.Text.Tagging;
+using Microsoft.VisualStudio.Utilities;
+
+namespace Enyim.Extensions.HighlightNonAscii
+{
+    [Export(typeof(IViewTaggerProvider))]
+    [ContentType("text")]
+    [ContentType("code")]
+    [TagType(typeof(TextMarkerTag))]
+    [TextViewRole(PredefinedTextViewRoles.Document)]
+    internal class NonAsciiTaggerProvider : IViewTaggerProvider
+    {
+        public ITagger<T> CreateTagger<T>(ITextView textView, ITextBuffer buffer) where T : ITag
+        {
+            if (textView.TextBuffer != buffer) return null;
+
+            return buffer.Properties.GetOrCreateSingletonProperty(() => new NonAsciiTagger()) as ITagger<T>;
+        }
+    }
+}

HighlightNonAscii/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("HighlightNonAscii")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("enyim.com")]
+[assembly: AssemblyProduct("HighlightNonAscii")]
+[assembly: AssemblyCopyright("(c) 2022 enyim.com, Attila Kiskó")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.2.0")]
+[assembly: AssemblyFileVersion("1.0.2.0")]

HighlightNonAscii/source.extension.vsixmanifest

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+<?xml version="1.0" encoding="utf-8"?>
+<PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011" xmlns:d="http://schemas.microsoft.com/developer/vsx-schema-design/2011">
+    <Metadata>
+        <Identity Id="HighlightNonAscii.6b083210-9e15-4654-a0e9-18c4603deee8" Version="1.0.2" Language="en-US" Publisher="Attila Kiskó" />
+        <DisplayName>HighlightNonAscii</DisplayName>
+        <Description xml:space="preserve">Highlights characters in source that are above ASCII 127 (international, non-printable symbols, etc.)</Description>
+        <License>LICENSE</License>
+    </Metadata>
+    <Installation>
+        <InstallationTarget Id="Microsoft.VisualStudio.Community" Version="[17.0, 18.0)">
+            <ProductArchitecture>amd64</ProductArchitecture>
+        </InstallationTarget>
+    </Installation>
+    <Dependencies>
+        <Dependency Id="Microsoft.Framework.NDP" DisplayName="Microsoft .NET Framework" d:Source="Manual" Version="[4.5,)" />
+    </Dependencies>
+    <Prerequisites>
+        <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[17.0,18.0)" DisplayName="Visual Studio core editor" />
+    </Prerequisites>
+    <Assets>
+        <Asset Type="Microsoft.VisualStudio.VsPackage" d:Source="Project" d:ProjectName="%CurrentProject%" Path="|%CurrentProject%;PkgdefProjectOutputGroup|" />
+        <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="%CurrentProject%" Path="|%CurrentProject%|" />
+    </Assets>
+</PackageManifest>

LICENSE

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+MIT License
+
+Copyright (c) 2022 enyim.com, Attila Kiskó
+
+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.

README.md

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+# What is this
+
+Highlights characters in source that are above ASCII 127 (international, non-printable symbols, etc.)
+
+# Demo
+
+![demo](demo.png)