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Fix string length detection #3

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Oct 9, 2022
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4 changes: 4 additions & 0 deletions .github/workflows/ci.yml
Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,10 @@ jobs:
run: dotnet format --no-restore --verify-no-changes
working-directory: './src'

- name: Run unit tests
run: dotnet test --no-restore -c ${{ env.configuration }}
working-directory: './src'

- name: Test Linux 64 bit
if: ${{ matrix.os == 'ubuntu-22.04' }}
run: |
Expand Down
8 changes: 8 additions & 0 deletions src/Directory.Build.props
Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
<Project>
<PropertyGroup>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
</PropertyGroup>
</Project>
21 changes: 8 additions & 13 deletions src/HidApi.Net.Benchmark/HidApi.Net.Benchmark.csproj
Original file line number Diff line number Diff line change
@@ -1,16 +1,11 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
<IsPackable>false</IsPackable>
</PropertyGroup>

<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
<IsPackable>false</IsPackable>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="BenchmarkDotNet" Version="0.13.2" />
</ItemGroup>

<ItemGroup>
<PackageReference Include="BenchmarkDotNet" Version="0.13.2"/>
</ItemGroup>
</Project>
8 changes: 2 additions & 6 deletions src/HidApi.Net.Tester/HidApi.Net.Tester.csproj
Original file line number Diff line number Diff line change
@@ -1,16 +1,12 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
<IsPackable>false</IsPackable>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="System.CommandLine" Version="2.0.0-beta4.22272.1" />
<ProjectReference Include="..\HidApi.Net\HidApi.Net.csproj" />
<PackageReference Include="System.CommandLine" Version="2.0.0-beta4.22272.1"/>
<ProjectReference Include="..\HidApi.Net\HidApi.Net.csproj"/>
</ItemGroup>
</Project>
17 changes: 17 additions & 0 deletions src/HidApi.Net.Tests/HidApi.Net.Tests.csproj
Original file line number Diff line number Diff line change
@@ -0,0 +1,17 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<IsPackable>false</IsPackable>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="FluentAssertions" Version="6.7.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
<PackageReference Include="MSTest.TestAdapter" Version="2.2.10" />
<PackageReference Include="MSTest.TestFramework" Version="2.2.10" />
</ItemGroup>

<ItemGroup>
<ProjectReference Include="..\HidApi.Net\HidApi.Net.csproj" />
</ItemGroup>
</Project>
56 changes: 56 additions & 0 deletions src/HidApi.Net.Tests/StringTests.cs
Original file line number Diff line number Diff line change
@@ -0,0 +1,56 @@
using FluentAssertions;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace HidApi.Tests;

[TestClass]
public class StringTests
{
[TestMethod]
public void TestUnicode()
{
var data = new byte[6];
data[0] = 0;
data[1] = 1;
data[2] = 0;
data[3] = 1;
data[4] = 0;
data[5] = 0;

unsafe
{
fixed (byte* p = data)
{
var str = Unicode.Read(p);
str.Should().Be(new string(new[] { '\u0100', '\u0100' }));
}
}
}

[TestMethod]
public void TestUtf32()
{
var data = new byte[12];
data[0] = 0;
data[1] = 1;
data[2] = 0;
data[3] = 0;
data[4] = 0;
data[5] = 1;
data[6] = 0;
data[7] = 0;
data[8] = 0;
data[9] = 0;
data[10] = 0;
data[11] = 0;

unsafe
{
fixed (byte* p = data)
{
var str = Utf32.Read(p);
str.Should().Be(new string(new[] { '\u0100', '\u0100' }));
}
}
}
}
7 changes: 7 additions & 0 deletions src/HidApi.Net.sln
Original file line number Diff line number Diff line change
Expand Up @@ -9,12 +9,15 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "SolutionItems", "SolutionIt
..\.editorconfig = ..\.editorconfig
..\.github\workflows\ci.yml = ..\.github\workflows\ci.yml
..\.github\dependabot.yml = ..\.github\dependabot.yml
Directory.Build.props = Directory.Build.props
EndProjectSection
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HidApi.Net.Benchmark", "HidApi.Net.Benchmark\HidApi.Net.Benchmark.csproj", "{0AFE95CC-90A8-490A-8FE5-2604A1BB13CE}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HidApi.Net.Tester", "HidApi.Net.Tester\HidApi.Net.Tester.csproj", "{D7FE837A-D24D-4D56-B538-CCC6968DDF1E}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HidApi.Net.Tests", "HidApi.Net.Tests\HidApi.Net.Tests.csproj", "{3F7CF192-630B-4981-963A-6BA97F8C65EA}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Expand All @@ -33,5 +36,9 @@ Global
{D7FE837A-D24D-4D56-B538-CCC6968DDF1E}.Debug|Any CPU.Build.0 = Debug|Any CPU
{D7FE837A-D24D-4D56-B538-CCC6968DDF1E}.Release|Any CPU.ActiveCfg = Release|Any CPU
{D7FE837A-D24D-4D56-B538-CCC6968DDF1E}.Release|Any CPU.Build.0 = Release|Any CPU
{3F7CF192-630B-4981-963A-6BA97F8C65EA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{3F7CF192-630B-4981-963A-6BA97F8C65EA}.Debug|Any CPU.Build.0 = Debug|Any CPU
{3F7CF192-630B-4981-963A-6BA97F8C65EA}.Release|Any CPU.ActiveCfg = Release|Any CPU
{3F7CF192-630B-4981-963A-6BA97F8C65EA}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
EndGlobal
5 changes: 1 addition & 4 deletions src/HidApi.Net/HidApi.Net.csproj
Original file line number Diff line number Diff line change
Expand Up @@ -2,11 +2,7 @@
<PropertyGroup>
<VersionPrefix>0.1.1</VersionPrefix>

<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<RootNamespace>HidApi</RootNamespace>
<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>

<Authors>Marcel Tiede</Authors>
Expand All @@ -32,6 +28,7 @@
<ItemGroup>
<PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All"/>
<InternalsVisibleTo Include="$(AssemblyName).Tester" />
<InternalsVisibleTo Include="$(AssemblyName).Tests" />
<None Include="../../readme.md" Pack="true" PackagePath="/" />
</ItemGroup>
</Project>
10 changes: 4 additions & 6 deletions src/HidApi.Net/Internal/Unicode.cs
Original file line number Diff line number Diff line change
Expand Up @@ -4,11 +4,9 @@ namespace HidApi;

internal static class Unicode
{
private const int UnicodeSize = 2;

public static ReadOnlySpan<byte> CreateBuffer(int size)
{
return new byte[size * UnicodeSize];
return new byte[size * sizeof(ushort)];
}

public static unsafe string Read(byte* ptr)
Expand All @@ -25,13 +23,13 @@ private static unsafe int Length(byte* ptr)
//check code to throw exception in case of arithmethic overflow
checked
{
var current = ptr;
var current = (ushort*) ptr;
while (*current != 0)
{
current += UnicodeSize; //Jump to next unicode char
current += 1; //Jump to next unicode char
}

return (int) (current - ptr);
return (int) ((byte*) current - ptr);
}
}
}
10 changes: 4 additions & 6 deletions src/HidApi.Net/Internal/Utf32.cs
Original file line number Diff line number Diff line change
Expand Up @@ -4,11 +4,9 @@ namespace HidApi;

internal static class Utf32
{
private const int Utf32Size = 4;

public static ReadOnlySpan<byte> CreateBuffer(int size)
{
return new byte[size * Utf32Size];
return new byte[size * sizeof(uint)];
}

public static unsafe string Read(byte* ptr)
Expand All @@ -25,13 +23,13 @@ private static unsafe int Length(byte* ptr)
//check code to throw exception in case of arithmethic overflow
checked
{
var current = ptr;
var current = (uint*) ptr;
while (*current != 0)
{
current += Utf32Size; //Jump to next UTF32 char
current += 1; //Jump to next UTF32 char
}

return (int) (current - ptr);
return (int) ((byte*) current - ptr);
}
}
}