Strong name signing of assemblies (#18)

* Enabled .Net Standard 2.0 too

* Make .NS 2.0 code cleaner

* Strong name signing

* Fixed CI

* Make string.Contains on NS2.0 the same behavior as NS2.1

Author: gfoidl

Diff for: Directory.Build.props

@@ -1,4 +1,5 @@
 <Project>
+
     <PropertyGroup>
         <MinClientVersion>2.12</MinClientVersion>
         <Authors>MyCSharp.de, Benjamin Abt, Günther Foidl and Contributors</Authors>
@@ -15,9 +16,18 @@
         <IsTestProject>$(MSBuildProjectName.Contains('Test'))</IsTestProject>
         <IsBenchmarkProject>$(MsBuildProjectName.Contains('Benchmark'))</IsBenchmarkProject>
         <IsPackable>false</IsPackable>
+        <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     </PropertyGroup>
 
     <PropertyGroup Condition="'$(IsTestProject)' != 'true' AND '$(IsBenchmarkProject)' != 'true'">
         <GenerateDocumentationFile Condition="'$(Configuration)' == 'Release'">true</GenerateDocumentationFile>
     </PropertyGroup>
+
+    <PropertyGroup>
+        <SignAssembly>true</SignAssembly>
+        <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)MyCSharp.HttpUserAgentParser.snk</AssemblyOriginatorKeyFile>
+
+        <PublicKey>00240000048000009400000006020000002400005253413100040000010001003d5c022c088a46d41d5a5bf7591f3a3dcba30f76b0f43a312b6e45bb419d32283175cbd8bfd83134b123da6db83479e50596fb6bbe0e8c6cef50c01c64a0861c963daaf6905920f44ffe1ce44b3cfcb9c23779f34bc90c7b04e74e36a19bb58af3a69456d49b56993969dba9f8e9e935c2757844a11066d1091477f10cd923b7</PublicKey>
+    </PropertyGroup>
+
 </Project>

Diff for: MyCSharp.HttpUserAgentParser.sln

@@ -33,7 +33,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "_", "_", "{5738CE0D-5E6E-47
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "perf", "perf", "{FAAD18A0-E1B8-448D-B611-AFBDA8A89808}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MyCSharp.HttpUserAgentParser.Benchmarks", "perf\MyCSharp.HttpUserAgentParser.Benchmarks\MyCSharp.HttpUserAgentParser.Benchmarks.csproj", "{A0D213E9-6408-46D1-AFAF-5096C2F6E027}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MyCSharp.HttpUserAgentParser.Benchmarks", "perf\MyCSharp.HttpUserAgentParser.Benchmarks\MyCSharp.HttpUserAgentParser.Benchmarks.csproj", "{A0D213E9-6408-46D1-AFAF-5096C2F6E027}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

Diff for: MyCSharp.HttpUserAgentParser.snk

@@ -10,6 +10,10 @@
         <DefineConstants>$(DefineConstants);OS_WIN</DefineConstants>
     </PropertyGroup>
 
+    <PropertyGroup Label="No strong named assembly references">
+        <NoWarn>$(NoWarn);CS8002</NoWarn>
+    </PropertyGroup>
+
     <ItemGroup>
         <PackageReference Include="BenchmarkDotNet" Version="0.12.1" />
         <PackageReference Include="BenchmarkDotNet.Diagnostics.Windows" Version="0.12.1" Condition="'$(OS)' == 'Windows_NT'" />

Diff for: perf/MyCSharp.HttpUserAgentParser.Benchmarks/MyCSharp.HttpUserAgentParser.Benchmarks.csproj

@@ -12,6 +12,11 @@ public class HttpUserAgentParserMemoryCachedProvider : IHttpUserAgentParserProvi
         private readonly IMemoryCache _memoryCache;
         private readonly HttpUserAgentParserMemoryCachedProviderOptions _options;
 
+        /// <summary>
+        /// Creates a new instance of <see cref="HttpUserAgentParserMemoryCachedProvider"/>.
+        /// </summary>
+        /// <param name="memoryCache">The memory cache instance to use</param>
+        /// <param name="options">The options used to set expiration and size limit</param>
         public HttpUserAgentParserMemoryCachedProvider(IMemoryCache memoryCache, HttpUserAgentParserMemoryCachedProviderOptions options)
         {
             _memoryCache = memoryCache;

Diff for: src/MyCSharp.HttpUserAgentParser.MemoryCache/HttpUserAgentParserMemoryCachedProvider.cs

@@ -3,10 +3,14 @@
     <PropertyGroup>
         <Product>HTTP User Agent Parser Extensions for IMemoryCache</Product>
         <Description>HTTP User Agent Parser Extensions for IMemoryCache</Description>
-        <TargetFramework>netstandard2.1</TargetFramework>
+        <TargetFrameworks>netstandard2.0;netstandard2.1</TargetFrameworks>
         <IsPackable>true</IsPackable>
     </PropertyGroup>
 
+    <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+        <Compile Include="..\NetStandard2.0-Shim.cs" />
+    </ItemGroup>
+
     <ItemGroup>
         <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="5.0.0" />
         <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="5.0.0" />

Diff for: src/MyCSharp.HttpUserAgentParser.MemoryCache/MyCSharp.HttpUserAgentParser.MemoryCache.csproj

@@ -3,10 +3,14 @@
     <PropertyGroup>
         <Product>HTTP User Agent Parser</Product>
         <Description>Parses user agents for Browser, Platform and Bots.</Description>
-        <TargetFramework>netstandard2.1</TargetFramework>
+        <TargetFrameworks>netstandard2.0;netstandard2.1</TargetFrameworks>
         <IsPackable>true</IsPackable>
     </PropertyGroup>
 
+    <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+        <Compile Include="..\NetStandard2.0-Shim.cs" />
+    </ItemGroup>
+
     <ItemGroup>
         <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="5.0.0" />
     </ItemGroup>

Diff for: src/MyCSharp.HttpUserAgentParser/MyCSharp.HttpUserAgentParser.csproj

@@ -0,0 +1,30 @@
+// Copyright © myCSharp 2020-2021, all rights reserved
+
+namespace System.Diagnostics.CodeAnalysis
+{
+    [AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
+    internal sealed class NotNullWhenAttribute : Attribute
+    {
+        public NotNullWhenAttribute(bool returnValue) => this.ReturnValue = returnValue;
+
+        public bool ReturnValue { get; }
+    }
+}
+
+namespace MyCSharp.HttpUserAgentParser
+{
+    using System;
+    using System.Collections.Generic;
+
+    internal static class Extensions
+    {
+        public static void Deconstruct<TKey, TValue>(this KeyValuePair<TKey, TValue> kvp, out TKey key, out TValue value)
+        {
+            key = kvp.Key;
+            value = kvp.Value;
+        }
+
+        public static bool Contains(this string instance, string value, StringComparison comparison)
+            => instance.IndexOf(value, comparison) >= 0;
+    }
+}