Update to latest refs and target frameworks

.editorconfig

@@ -104,8 +104,8 @@ dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity:war
 dotnet_style_parentheses_in_other_binary_operators = always_for_clarity:warning
 dotnet_style_parentheses_in_other_operators = always_for_clarity:suggestion
 # Expression-level preferences
-dotnet_style_object_initializer = true:warning
-dotnet_style_collection_initializer = true:warning
+dotnet_style_object_initializer = true:error
+dotnet_style_collection_initializer = true:error
 dotnet_style_explicit_tuple_names = true:warning
 dotnet_style_prefer_inferred_tuple_names = true:warning
 dotnet_style_prefer_inferred_anonymous_type_member_names = true:warning
@@ -135,9 +135,9 @@ csharp_style_prefer_null_check_over_type_check = true:warning
 # https://docs.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/language-rules#c-style-rules
 [*.{cs,csx,cake}]
 # 'var' preferences
-csharp_style_var_for_built_in_types = false:warning
-csharp_style_var_when_type_is_apparent = false:warning
-csharp_style_var_elsewhere = false:warning
+csharp_style_var_for_built_in_types = false:error
+csharp_style_var_when_type_is_apparent = false:error
+csharp_style_var_elsewhere = false:error
 # Expression-bodied members
 csharp_style_expression_bodied_methods = true:warning
 csharp_style_expression_bodied_constructors = true:warning
@@ -160,7 +160,10 @@ csharp_style_pattern_local_over_anonymous_function = true:warning
 csharp_style_deconstructed_variable_declaration = true:warning
 csharp_style_prefer_index_operator = true:warning
 csharp_style_prefer_range_operator = true:warning
-csharp_style_implicit_object_creation_when_type_is_apparent = true:warning
+csharp_style_implicit_object_creation_when_type_is_apparent = true:error
+# ReSharper inspection severities
+resharper_arrange_object_creation_when_type_evident_highlighting = error
+resharper_arrange_object_creation_when_type_not_evident_highlighting = error
 # "Null" checking preferences
 csharp_style_throw_expression = true:warning
 csharp_style_conditional_delegate_call = true:warning
@@ -172,6 +175,11 @@ dotnet_diagnostic.IDE0063.severity = suggestion
 csharp_using_directive_placement = outside_namespace:warning
 # Modifier preferences
 csharp_prefer_static_local_function = true:warning
+# Primary constructor preferences
+csharp_style_prefer_primary_constructors = false:none
+# Collection preferences
+dotnet_style_prefer_collection_expression = true:error
+resharper_use_collection_expression_highlighting =true:error
 
 ##########################################
 # Unnecessary Code Rules

.gitattributes

@@ -133,3 +133,13 @@
 *.pnm               filter=lfs diff=lfs merge=lfs -text
 *.wbmp              filter=lfs diff=lfs merge=lfs -text
 *.exr               filter=lfs diff=lfs merge=lfs -text
+*.ico               filter=lfs diff=lfs merge=lfs -text
+*.cur               filter=lfs diff=lfs merge=lfs -text
+*.ani               filter=lfs diff=lfs merge=lfs -text
+*.heic              filter=lfs diff=lfs merge=lfs -text
+*.hif               filter=lfs diff=lfs merge=lfs -text
+*.avif              filter=lfs diff=lfs merge=lfs -text
+###############################################################################
+# Handle ICC files by git lfs
+###############################################################################
+*.icc               filter=lfs diff=lfs merge=lfs -text

.github/workflows/build-and-test.yml

@@ -12,49 +12,94 @@ on:
       - release/*
     types: [ labeled, opened, synchronize, reopened ]
 jobs:
+  # Prime a single LFS cache and expose the exact key for the matrix
+  WarmLFS:
+    runs-on: ubuntu-latest
+    outputs:
+      lfs_key: ${{ steps.expose-key.outputs.lfs_key }}
+    steps:
+      - name: Git Config
+        shell: bash
+        run: |
+          git config --global core.autocrlf false
+          git config --global core.longpaths true
+
+      - name: Git Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          submodules: recursive
+
+      # Deterministic list of LFS object IDs, then compute a portable key:
+      # - `git lfs ls-files -l` lists all tracked LFS objects with their SHA-256
+      # - `awk '{print $1}'` extracts just the SHA field
+      # - `sort` sorts in byte order (hex hashes sort the same everywhere)
+      # This ensures the file content is identical regardless of OS or locale
+      - name: Git Create LFS id list
+        shell: bash
+        run: git lfs ls-files -l | awk '{print $1}' | sort > .lfs-assets-id
+
+      - name: Git Expose LFS cache key
+        id: expose-key
+        shell: bash
+        env:
+          LFS_KEY: lfs-${{ hashFiles('.lfs-assets-id') }}-v1
+        run: echo "lfs_key=$LFS_KEY" >> "$GITHUB_OUTPUT"
+
+      - name: Git Setup LFS Cache
+        uses: actions/cache@v4
+        with:
+          path: .git/lfs
+          key: ${{ steps.expose-key.outputs.lfs_key }}
+
+      - name: Git Pull LFS
+        shell: bash
+        run: git lfs pull
+
   Build:
+    needs: WarmLFS
     strategy:
       matrix:
         isARM:
           - ${{ contains(github.event.pull_request.labels.*.name, 'arch:arm32') || contains(github.event.pull_request.labels.*.name, 'arch:arm64') }}
         options:
           - os: ubuntu-latest
-            framework: net7.0
-            sdk: 7.0.x
+            framework: net9.0
+            sdk: 9.0.x
             sdk-preview: true
             runtime: -x64
             codecov: false
           - os: macos-latest
-            framework: net7.0
-            sdk: 7.0.x
+            framework: net9.0
+            sdk: 9.0.x
             sdk-preview: true
             runtime: -x64
             codecov: false
           - os: windows-latest
-            framework: net7.0
-            sdk: 7.0.x
+            framework: net9.0
+            sdk: 9.0.x
             sdk-preview: true
             runtime: -x64
             codecov: false
           - os: buildjet-4vcpu-ubuntu-2204-arm
-            framework: net7.0
-            sdk: 7.0.x
+            framework: net9.0
+            sdk: 9.0.x
             sdk-preview: true
             runtime: -x64
             codecov: false
           - os: ubuntu-latest
-            framework: net6.0
-            sdk: 6.0.x
+            framework: net8.0
+            sdk: 8.0.x
             runtime: -x64
             codecov: false
           - os: macos-latest
-            framework: net6.0
-            sdk: 6.0.x
+            framework: net8.0
+            sdk: 8.0.x
             runtime: -x64
             codecov: false
           - os: windows-latest
-            framework: net6.0
-            sdk: 6.0.x
+            framework: net8.0
+            sdk: 8.0.x
             runtime: -x64
             codecov: true
         exclude:
@@ -66,8 +111,10 @@ jobs:
 
     steps:
       - name: Install libgdi+, which is required for tests running on ubuntu
-        if: ${{ matrix.options.os == 'buildjet-4vcpu-ubuntu-2204-arm' }}
-        run: sudo apt-get -y install libgdiplus libgif-dev libglib2.0-dev libcairo2-dev libtiff-dev libexif-dev
+        if: ${{ contains(matrix.options.os, 'ubuntu') }}
+        run: |
+          sudo apt-get update
+          sudo apt-get -y install libgdiplus libgif-dev libglib2.0-dev libcairo2-dev libtiff-dev libexif-dev
 
       - name: Git Config
         shell: bash
@@ -81,16 +128,12 @@ jobs:
           fetch-depth: 0
           submodules: recursive
 
-      # See https://github.com/actions/checkout/issues/165#issuecomment-657673315
-      - name: Git Create LFS FileList
-        run: git lfs ls-files -l | cut -d' ' -f1 | sort > .lfs-assets-id
-
+      # Use the warmed key from WarmLFS. Do not recompute or recreate .lfs-assets-id here.
       - name: Git Setup LFS Cache
         uses: actions/cache@v4
-        id: lfs-cache
         with:
           path: .git/lfs
-          key: ${{ runner.os }}-lfs-${{ hashFiles('.lfs-assets-id') }}-v1
+          key: ${{ needs.WarmLFS.outputs.lfs_key }}
 
       - name: Git Pull LFS
         run: git lfs pull
@@ -111,14 +154,14 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
-            6.0.x
+            8.0.x
 
       - name: DotNet Setup Preview
         if: ${{ matrix.options.sdk-preview == true }}
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
-            7.0.x
+            9.0.x
 
       - name: DotNet Build
         if: ${{ matrix.options.sdk-preview != true }}

samples/DrawWithImageSharp/DrawWithImageSharp.csproj

@@ -13,12 +13,12 @@
   <Choose>
     <When Condition="$(SIXLABORS_TESTING_PREVIEW) == true">
       <PropertyGroup>
-        <TargetFrameworks>net7.0;net6.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
       </PropertyGroup>
     </When>
     <Otherwise>
       <PropertyGroup>
-        <TargetFrameworks>net6.0</TargetFrameworks>
+        <TargetFrameworks>net8.0</TargetFrameworks>
       </PropertyGroup>
     </Otherwise>
   </Choose>

samples/ListFonts/ListFonts.csproj

@@ -7,12 +7,12 @@
   <Choose>
     <When Condition="$(SIXLABORS_TESTING_PREVIEW) == true">
       <PropertyGroup>
-        <TargetFrameworks>net7.0;net6.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
       </PropertyGroup>
     </When>
     <Otherwise>
       <PropertyGroup>
-        <TargetFrameworks>net6.0</TargetFrameworks>
+        <TargetFrameworks>net8.0</TargetFrameworks>
       </PropertyGroup>
     </Otherwise>
   </Choose>

src/SixLabors.Fonts/BigEndianBinaryReader.cs

@@ -377,6 +377,7 @@ public int ReadOffset(int size)
     /// </summary>
     /// <param name="data">Buffer to read into.</param>
     /// <param name="size">Number of bytes to read.</param>
+    /// <exception cref="EndOfStreamException">The end of the stream was reached before reading could complete.</exception>
     private void ReadInternal(byte[] data, int size)
     {
         int index = 0;

src/SixLabors.Fonts/FontCollection.cs

@@ -12,8 +12,8 @@ namespace SixLabors.Fonts;
 /// </summary>
 public sealed class FontCollection : IFontCollection, IFontMetricsCollection
 {
-    private readonly HashSet<string> searchDirectories = new();
-    private readonly HashSet<FontMetrics> metricsCollection = new();
+    private readonly HashSet<string> searchDirectories = [];
+    private readonly HashSet<FontMetrics> metricsCollection = [];
 
     /// <summary>
     /// Initializes a new instance of the <see cref="FontCollection"/> class.
@@ -208,15 +208,15 @@ private FontFamily AddImpl(Stream stream, CultureInfo culture, out FontDescripti
         return ((IFontMetricsCollection)this).AddMetrics(metrics, culture);
     }
 
-    private IEnumerable<FontFamily> AddCollectionImpl(
+    private HashSet<FontFamily> AddCollectionImpl(
         string path,
         CultureInfo culture,
         out IEnumerable<FontDescription> descriptions)
     {
         FileFontMetrics[] fonts = FileFontMetrics.LoadFontCollection(path);
 
         FontDescription[] description = new FontDescription[fonts.Length];
-        HashSet<FontFamily> families = new();
+        HashSet<FontFamily> families = [];
         for (int i = 0; i < fonts.Length; i++)
         {
             description[i] = fonts[i].Description;
@@ -228,7 +228,7 @@ private IEnumerable<FontFamily> AddCollectionImpl(
         return families;
     }
 
-    private IEnumerable<FontFamily> AddCollectionImpl(
+    private HashSet<FontFamily> AddCollectionImpl(
         Stream stream,
         CultureInfo culture,
         out IEnumerable<FontDescription> descriptions)
@@ -237,7 +237,7 @@ private IEnumerable<FontFamily> AddCollectionImpl(
         using BigEndianBinaryReader reader = new(stream, true);
         TtcHeader ttcHeader = TtcHeader.Read(reader);
         List<FontDescription> result = new((int)ttcHeader.NumFonts);
-        HashSet<FontFamily> installedFamilies = new();
+        HashSet<FontFamily> installedFamilies = [];
         for (int i = 0; i < ttcHeader.NumFonts; ++i)
         {
             stream.Position = startPos + ttcHeader.OffsetTable[i];
@@ -251,12 +251,11 @@ private IEnumerable<FontFamily> AddCollectionImpl(
         return installedFamilies;
     }
 
-    private IEnumerable<FontFamily> FamiliesByCultureImpl(CultureInfo culture)
-        => this.metricsCollection
+    private FontFamily[] FamiliesByCultureImpl(CultureInfo culture)
+        => [.. this.metricsCollection
         .Select(x => x.Description.FontFamily(culture))
         .Distinct()
-        .Select(x => new FontFamily(x, this, culture))
-        .ToArray();
+        .Select(x => new FontFamily(x, this, culture))];
 
     private bool TryGetImpl(string name, CultureInfo culture, out FontFamily family)
     {

src/SixLabors.Fonts/IO/ZlibInflateStream.cs

@@ -122,10 +122,7 @@ public override void Flush()
     /// <inheritdoc/>
     public override int Read(byte[] buffer, int offset, int count)
     {
-        if (this.deflateStream is null)
-        {
-            throw new ObjectDisposedException("inner stream");
-        }
+        ObjectDisposedException.ThrowIf(this.deflateStream is null, this.GetType());
 
         // We don't check CRC on reading
         int read = this.deflateStream.Read(buffer, offset, count);
@@ -135,7 +132,7 @@ public override int Read(byte[] buffer, int offset, int count)
             this.crcRead = new byte[4];
             for (int i = 0; i < 4; i++)
             {
-                // we dont really check/use this
+                // we don't really check/use this
                 this.crcRead[i] = (byte)this.rawStream.ReadByte();
             }
         }

src/SixLabors.Fonts/SixLabors.Fonts.csproj

@@ -26,19 +26,19 @@
 
   <PropertyGroup>
     <!--Bump to V2 prior to tagged release.-->
-    <MinVerMinimumMajorMinor>2.0</MinVerMinimumMajorMinor>
+    <MinVerMinimumMajorMinor>3.0</MinVerMinimumMajorMinor>
   </PropertyGroup>
 
   <Choose>
     <When Condition="$(SIXLABORS_TESTING_PREVIEW) == true">
       <PropertyGroup>
-        <TargetFrameworks>net7.0;net6.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
         <IsTrimmable>true</IsTrimmable>
       </PropertyGroup>
     </When>
     <Otherwise>
       <PropertyGroup>
-        <TargetFrameworks>net6.0</TargetFrameworks>
+        <TargetFrameworks>net8.0</TargetFrameworks>
         <IsTrimmable>true</IsTrimmable>
       </PropertyGroup>
     </Otherwise>
@@ -55,15 +55,5 @@
     <None Include="..\..\shared-infrastructure\branding\icons\fonts\sixlabors.fonts.128.png" Pack="true" PackagePath="" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFrameworkIdentifier)' == '.NETStandard' ">
-    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="4.7.0" />
-  </ItemGroup>
-
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
-    <PackageReference Include="System.Numerics.Vectors" Version="4.5.0" />
-    <PackageReference Include="System.Buffers" Version="4.5.1" />
-    <PackageReference Include="System.Memory" Version="4.5.4" />
-  </ItemGroup>
-
   <Import Project="..\..\shared-infrastructure\src\SharedInfrastructure\SharedInfrastructure.projitems" Label="Shared" />
 </Project>

src/SixLabors.Fonts/StreamFontMetrics.Cff.cs

@@ -65,7 +65,7 @@ private static StreamFontMetrics LoadCompactFont(FontReader reader)
         return new StreamFontMetrics(tables);
     }
 
-    private GlyphMetrics CreateCffGlyphMetrics(
+    private CffGlyphMetrics CreateCffGlyphMetrics(
         in CodePoint codePoint,
         ushort glyphId,
         GlyphType glyphType,