use version-controlled clang-format.sh from https://github.com/ValeevGroup/DevOps/blob/master/tools/clang-format/clang-format.sh

Author: evaleev

.pre-commit-config.yaml

@@ -38,5 +38,5 @@ repos:
                 name: Format C/C++ code using clang-format.
                 language: system
                 files: \.(c|cc|cxx|cpp|h|hpp|hxx)$
-                entry: clang-format -i
-                args: [--style=file]
+                entry: bin/admin/clang-format.sh
+                args: [--style=file -i]

bin/admin/clang-format.sh

@@ -0,0 +1,94 @@
+#!/bin/bash
+
+# these are the versions of clang-format that are supported required
+# should be ordered from oldest to newest to make sure the newest is picked
+supported_clang_format_versions="16 17"
+preferred_clang_format_version=""  # prefer most recent supported clang-format version
+for v in $supported_clang_format_versions; do
+  preferred_clang_format_version=$v
+done
+
+# append common locations of clang-format to PATH
+unameOut="$(uname -s)"
+case "${unameOut}" in
+    Darwin*)
+      extra_path=""
+      # this prefers more recent versions
+      for v in $supported_clang_format_versions; do
+        extra_path=/opt/homebrew/opt/llvm@$v/bin:/opt/homebrew/opt/clang-format@$v/bin:$extra_path
+      done
+      # prepend paths
+      export PATH=$extra_path:$PATH:/opt/homebrew/bin
+    ;;
+esac
+
+path_to_clang_format=`which clang-format`
+have_supported_clang_format_version=0
+if [[ "X$path_to_clang_format" != "X" ]]; then
+
+  # check clang-format version
+  clang_format_version=`clang-format --version | sed 's/.* version //' | awk -F'[.]' '{print $1}'`
+
+  #echo "supported_clang_format_versions=\"$supported_clang_format_versions\" clang_format_version=$clang_format_version"
+
+  # if found clang-format, but wrong version, check if docker is available
+  for v in $supported_clang_format_versions; do
+    if [[ $clang_format_version -eq $v ]]; then
+      have_supported_clang_format_version=1
+      break
+    fi
+  done
+fi
+
+if [[ $have_supported_clang_format_version -eq 0 ]]; then
+  echo "WARNING: found clang-format with unsupported version $clang_format_version (supported versions: $supported_clang_format_versions)"
+
+  # look for docker
+  path_to_docker=`which docker`
+  if [[ "X$path_to_docker" = "X" ]]; then
+    echo "ERROR: docker is not found either, PATH=$PATH, install one of supported clang-format versions (any of these: $supported_clang_format_versions) or install docker"
+    exit 1
+  fi
+
+  # if docker up?
+  docker info >/dev/null 2>&1
+  if [[ $? -ne 0 ]]; then
+    echo "ERROR: docker is found but not running, start it"
+    exit 1
+  fi
+
+  # use docker to run clang-format
+  mount_path=$(readlink -f "$HOME")
+
+  # convert file names in the arguments to relative paths
+  args=""
+  for i in "$@"; do
+    # skip options
+    if [[ "$i" == -* ]]; then
+      args="$args $i"
+      continue
+    fi
+    abs_file_path=$(readlink -f "$i")
+    if [[ "X$abs_file_path" = "X" ]]; then
+      echo "ERROR: given file $i is not found"
+      exit 1
+    fi
+
+    dir=$(dirname $abs_file_path)
+    file_path_relative_to_project_root=$(basename $abs_file_path)
+    while [[ "$dir" != "$mount_path" && "$dir" != "/" ]]; do
+      file_path_relative_to_project_root="$(basename $dir)/$file_path_relative_to_project_root"
+      dir=$(dirname $dir)
+      #echo "dir=$dir file_path_relative_to_project_root=$file_path_relative_to_project_root"
+    done
+    if [[ "$dir" == "/" ]]; then
+      echo "ERROR: given file $i (absolute path $abs_file_path) is not under \$HOME=$mount_path, cannot use docker-based clang-format in this case"
+      exit 1
+    fi
+    args="$args /hostHOME/$file_path_relative_to_project_root"
+  done
+  docker run --platform linux/x86_64 -v $mount_path:/hostHOME xianpengshen/clang-tools:$preferred_clang_format_version clang-format $args
+else
+  #echo "found $path_to_clang_format with required version $clang_format_version"
+  clang-format $*
+fi