Prototype clang-format support

.clang-format

@@ -0,0 +1,11 @@
+# Copyright 2024 The Khronos Group Inc.
+# SPDX-License-Identifier: Apache-2.0
+---
+# Use defaults from the Google style with the following exceptions:
+Language: Cpp
+BasedOnStyle: Google
+IndentWidth: 4
+IndentCaseLabels: false
+ColumnLimit: 132
+SortIncludes: false
+...

.github/workflows/formatting.yml

@@ -0,0 +1,37 @@
+# Copyright 2024 The Khronos Group Inc.
+# Copyright 2024 RasterGrid Kft.
+# SPDX-License-Identifier: Apache-2.0
+name: Formatting
+
+on:
+  # Trigger the workflow on a pull request,
+  pull_request:
+
+  push:
+    # And on pushes to main, which will occur when a PR is merged.
+    branches:
+      - main
+    # Also trigger on push of release tags to any branch. Useful
+    # for testing release builds before merging to main.
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+'
+      - 'v[0-9]+.[0-9]+.[0-9]+-*'
+    paths-ignore:
+      - .appveyor.yml
+      - .travis.yml
+
+permissions:
+  contents: read
+
+jobs:
+  clang-format:
+    name: clang-format
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+    - uses: actions/checkout@v4
+    - name: Run clang-format
+      uses: jidicula/[email protected]
+      with:
+        clang-format-version: '16'

.gitignore

@@ -13,13 +13,12 @@
 # /include/
 /include/imdebug.h
 
-# /lib/
-/lib/astc-encoder/.gitmodules
-/lib/astc-encoder/Source/GoogleTest
-/lib/basisu/bin_osx
-/lib/basisu/bin
-/lib/basisu/build
-/lib/src
+# /external/
+/external/astc-encoder/.gitmodules
+/external/astc-encoder/Source/GoogleTest
+/external/basisu/bin_osx
+/external/basisu/bin
+/external/basisu/build
 
 # /testimages/
 /testimages/*.png

.reuse/dep5

@@ -70,48 +70,48 @@ Files: */*.json
 Copyright: 2017-2020 Mark Callow
 License: Apache-2.0
 
-Files: lib/astc-encoder/Docs/* lib/astc-encoder/Test/* lib/astc-encoder/jenkins/* lib/astc-encoder/.gitattributes lib/astc-encoder/.gitignore lib/astc-encoder/.gitmodules lib/astc-encoder/.pylintrc lib/astc-encoder/README.md lib/astc-encoder/Utils/Example/README.md
+Files: external/astc-encoder/Docs/* external/astc-encoder/Test/* external/astc-encoder/jenkins/* external/astc-encoder/.gitattributes external/astc-encoder/.gitignore external/astc-encoder/.gitmodules external/astc-encoder/.pylintrc external/astc-encoder/README.md external/astc-encoder/Utils/Example/README.md
 Copyright: 2020-2021 Arm Limited
 License: Apache-2.0
 
-Files: lib/astc-encoder/.gitrepo
+Files: external/astc-encoder/.gitrepo
 Copyright: 2021 Mark Callow
 License: Apache-2.0
 
-Files: lib/astc-encoder/Source/stb_image*.h
+Files: external/astc-encoder/Source/stb_image*.h
 Copyright: 2017 Sean Barrett
 License: MIT
 
-Files: lib/astc-encoder/Source/tinyexr.h
+Files: external/astc-encoder/Source/tinyexr.h
 Copyright: 2014-2019 Syoyo Fujita and many contributors
 License: BSD-3-Clause
 
-Files: lib/astc-encoder/Source/wuffs-v0.3.c
+Files: external/astc-encoder/Source/wuffs-v0.3.c
 Copyright: 2022 The Wuffs Authors.
 License: Apache-2.0
 
 # We have asked Binomial about REUSE compliance for their repo, see https://github.com/BinomialLLC/basis_universal/issues/165
-Files: lib/basisu/*
+Files: external/basisu/*
 Copyright: 2019-2020 Binomial LLC
 License: Apache-2.0
 
-Files: lib/basisu/apg_bmp.* lib/basisu/CMakeLists.txt lib/basisu/webgl/transcoder/CMakeLists.txt
+Files: external/basisu/apg_bmp.* external/basisu/CMakeLists.txt external/basisu/webgl/transcoder/CMakeLists.txt
 Copyright: 2019 Anton Gerdelan
 License: Apache-2.0
 
-Files: lib/basisu/basisu_astc_decomp.*
+Files: external/basisu/basisu_astc_decomp.*
 Copyright: 2016 The Android Open Source Project
 License: Apache-2.0
 
 Files: tools/imageio/png.imageio/lodepng.*
 Copyright: 2005-2019 Lode Vandevenne
 License: Zlib
 
-Files: lib/dfdutils/vulkan/*
+Files: external/dfdutils/vulkan/*
 Copyright: 2015-2020 The Khronos Group Inc.
 License: Apache-2.0
 
-Files: lib/dfdutils/.gitrepo
+Files: external/dfdutils/.gitrepo
 Copyright: 2019-2020 The Khronos Group Inc
 License: Apache-2.0
 
@@ -201,10 +201,10 @@ Files: the_khronos_group_inc.p12.enc
 Copyright: 2022 The Khronos Group Inc.
 License: Apache-2.0
 
-Files: other_projects/fmt/*
+Files: external/fmt/*
 Copyright: 2012 - present Victor Zverovich
 License: MIT
 
-Files: other_projects/cxxopts/*
+Files: external/cxxopts/*
 Copyright: 2014-2022 Jarryd Beck
 License: MIT