CI: Speed up static checks by checking only changed files

- file_format, header_guards and clang-format benefit from this short list.
- dotnet-format, Python and JS checks don't, but they're only relevant for
  PRs changing a specific set of files, so we skip them when those files
  aren't modified.

The logic to get changed files only works reliably for:
- Pull request events
- Non-force pushed push events

So when force pushing a branch in your fork, or creating a new branch,
it will still scan all files as fallback.

Upgraded CI runner to Ubuntu 22.04 so we get clang-format 14 out of the box,
so we don't need to install a custom version (saves ~15 s). We also cache
the APT dependencies to speed up the build and avoid flaky Ubuntu/Microsoft
repos.

1 files changed, 13 insertions, 5 deletions

diff --git a/misc/scripts/header_guards.sh b/misc/scripts/header_guards.sh
index a063ff4b9c..1f8aa6151c 100755
--- a/misc/scripts/header_guards.sh
+++ b/misc/scripts/header_guards.sh
@@ -5,9 +5,17 @@ if [ ! -f "version.py" ]; then
   echo "Some of the paths checks may not work as intended from a different folder."
 fi
 
+if [ $# -eq 0 ]; then
+    # Loop through all code files tracked by Git.
+    files=$(find -name "thirdparty" -prune -o -name "*.h" -print | sed "s@^\./@@g")
+else
+    # $1 should be a file listing file paths to process. Used in CI.
+    files=$(cat "$1" | grep -v "thirdparty/" | grep -E "\.h$" | sed "s@^\./@@g")
+fi
+
 files_invalid_guard=""
 
-for file in $(find -name "thirdparty" -prune -o -name "*.h" -print); do
+for file in $files; do
   # Skip *.gen.h and *-so_wrap.h, they're generated.
   if [[ "$file" == *".gen.h" || "$file" == *"-so_wrap.h" ]]; then continue; fi
   # Has important define before normal header guards.
@@ -20,16 +28,16 @@ for file in $(find -name "thirdparty" -prune -o -name "*.h" -print); do
   # Add custom prefix or suffix for generic filenames with a well-defined namespace.
 
   prefix=
-  if [[ "$file" == "./modules/"*"/register_types.h" ]]; then
+  if [[ "$file" == "modules/"*"/register_types.h" ]]; then
     module=$(echo $file | sed "s@.*modules/\([^/]*\).*@\1@")
     prefix="${module^^}_"
   fi
-  if [[ "$file" == "./platform/"*"/api/api.h" || "$file" == "./platform/"*"/export/"* ]]; then
+  if [[ "$file" == "platform/"*"/api/api.h" || "$file" == "platform/"*"/export/"* ]]; then
     platform=$(echo $file | sed "s@.*platform/\([^/]*\).*@\1@")
     prefix="${platform^^}_"
   fi
-  if [[ "$file" == "./modules/mono/utils/"* && "$bname" != *"mono"* ]]; then prefix="MONO_"; fi
-  if [[ "$file" == "./servers/rendering/storage/utilities.h" ]]; then prefix="RENDERER_"; fi
+  if [[ "$file" == "modules/mono/utils/"* && "$bname" != *"mono"* ]]; then prefix="MONO_"; fi
+  if [[ "$file" == "servers/rendering/storage/utilities.h" ]]; then prefix="RENDERER_"; fi
 
   suffix=
   if [[ "$file" == *"dummy"* && "$bname" != *"dummy"* ]]; then suffix="_DUMMY"; fi