clang format (#447)

* add linux clang format script

* first shot at powershell

* whoops

* webrequest is slow, try webclient

* just get the one file

* simplify and maybe make it work?

* whoops again

* try a different suggestion

* why is it always windows

* again

* try again

* bit of path stuff

* chmod +x

* add action to check

* fix workflow name

3 files changed, 96 insertions, 0 deletions

diff --git a/.github/workflows/clang-format.yml b/.github/workflows/clang-format.yml
new file mode 100644
index 000000000..443d6669d
--- /dev/null
+++ b/.github/workflows/clang-format.yml
@@ -0,0 +1,20 @@
+name: clang-format
+on: [pull_request]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  clang-format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+      - name: Install clang-format
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y clang-format-14
+      - name: Run clang-format
+        run: |
+          ./run-clang-format.sh
+          git diff --exit-code
diff --git a/run-clang-format.ps1 b/run-clang-format.ps1
new file mode 100644
index 000000000..38d4d1422
--- /dev/null
+++ b/run-clang-format.ps1
@@ -0,0 +1,47 @@
+$url = "https://github.com/llvm/llvm-project/releases/download/llvmorg-14.0.6/LLVM-14.0.6-win64.exe"
+$llvmInstallerPath = ".\LLVM-14.0.6-win64.exe"
+$clangFormatFilePath = ".\clang-format.exe"
+$requiredVersion = "clang-format version 14.0.6"
+$currentVersion = ""
+
+function Test-7ZipInstalled {
+    $sevenZipPath = "C:\Program Files\7-Zip\7z.exe"
+    return Test-Path $sevenZipPath -PathType Leaf
+}
+
+if (Test-Path $clangFormatFilePath) {
+    $currentVersion = & $clangFormatFilePath --version
+    if (-not ($currentVersion -eq $requiredVersion)) {
+        # Delete the existing file if the version is incorrect
+        Remove-Item $clangFormatFilePath -Force
+    }
+}
+
+if (-not (Test-Path $clangFormatFilePath) -or ($currentVersion -ne $requiredVersion)) {
+    if (-not (Test-7ZipInstalled)) {
+        Write-Host "7-Zip is not installed. Please install 7-Zip and run the script again."
+        exit
+    }
+
+    $wc = New-Object net.webclient
+    $wc.Downloadfile($url, $llvmInstallerPath)
+
+    $sevenZipPath = "C:\Program Files\7-Zip\7z.exe"
+    $specificFileInArchive = "bin\clang-format.exe"
+    & "$sevenZipPath" e $llvmInstallerPath $specificFileInArchive
+
+    Remove-Item $llvmInstallerPath -Force
+}
+
+$basePath = (Resolve-Path .).Path
+$files = Get-ChildItem -Path $basePath\mm -Recurse -File `
+    | Where-Object { ($_.Extension -eq '.c' -or $_.Extension -eq '.cpp' -or `
+                      ($_.Extension -eq '.h' -and `
+                       (-not ($_.FullName -like "*\mm\src\*" -or $_.FullName -like "*\mm\include\*")))) -and `
+                     (-not ($_.FullName -like "*\mm\assets\*")) }
+
+foreach ($file in $files) {
+    $relativePath = $file.FullName.Substring($basePath.Length + 1)
+    Write-Host "Formatting $relativePath"
+    .\clang-format.exe -i $file.FullName
+}
diff --git a/run-clang-format.sh b/run-clang-format.sh
new file mode 100755
index 000000000..7f37ec3f4
--- /dev/null
+++ b/run-clang-format.sh
@@ -0,0 +1,29 @@
+# this line does quite a bit, so let's break it down
+# 
+# find mm
+# use "find" to look in the "mm" directory
+# this ensures we don't try to format stuff in the submodules
+# 
+# -type f
+# only look for files
+# 
+# -name "*.c" -o -name "*.cpp"
+# find all .c and .cpp files
+# 
+# -name "*.h" ! -path "mm/src/**.h" ! -path "mm/include/**.h"
+# find all .h files that aren't in mm/src or mm/include
+# this is because zret decomp only runs clang-format on c files
+# https://github.com/zeldaret/mm/blob/b7e5468ca16315a7e322055eff3d97fe980bbc25/format.py#L182
+# 
+# ! -path "mm/assets/*"
+# asset headers are autogenerated, don't fight them
+#
+# | sed 's| |\\ |g'
+# pipe the result of find into sed to
+# ensure all the paths returned by find have spaces escaped
+# 
+# | xargs clang-format-14 -i
+# use xargs to take each path we've found
+# and pass it as an argument to clang-format
+
+find mm -type f \( -name "*.c" -o -name "*.cpp" -o \( -name "*.h" ! -path "mm/src/**.h" ! -path "mm/include/**.h" \) \) ! -path "mm/assets/*" | sed 's| |\\ |g' | xargs clang-format-14 -i