kicad/.githooks/pre-commit.d/50-check-format

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#!/usr/bin/env bash
#
# Runs clang-format on changed regions before commit.
#
# Remaining installation checks/instructions will be printed when you commit.
#
# Based on clang-format pre-commit hook by Alex Eagle
# https://gist.github.com/alexeagle/c8ed91b14a407342d9a8e112b5ac7dab
# Set kicad.check-format to allow this hook to run
# If not set, the hook always succeeds.
do_format=false
# Check if formatting is configured
if [ "$(git config --get kicad.check-format)" = true ]; then
do_format=true
fi
# Older env variable method
if [ ! -z "$KICAD_CHECK_FORMAT" ]; then
do_format=true
fi
if [ ! ${do_format} = true ]; then
# No formatting required
exit 0;
fi
check_clang_format() {
if hash git-clang-format 2>/dev/null; then
return
else
echo "SETUP ERROR: no git-clang-format executable found, or it is not executable"
exit 1
fi
}
check_git_config() {
if [[ "$(git config --get clangFormat.style)" != "file" ]]; then
echo "SETUP ERROR: git config clangFormat.style is wrong (should be 'file'). Fix this with:"
echo "git config clangFormat.style file"
exit 1
fi
}
get_filtered_filenames()
{
format_attr='clang-format-kicad'
# command to get list of candidate files
git_list_files='git diff --cached --name-only --diff-filter=ACM'
files=$(${git_list_files} |
# Filter for format-controlled files
git check-attr --stdin format.${format_attr} |
# output only the file names
grep ": set$" |
cut -d: -f1)
echo ${files}
}
check_clang_format
check_git_config
files_to_check=$(get_filtered_filenames)
if [ -z "${files_to_check}" ]; then
# No controlled files to check
exit 0;
fi
git_clang_format_cmd="git clang-format -v --diff -- ${files_to_check}"
readonly out=$(${git_clang_format_cmd})
# In these cases, there is no formatting issues, so we succeed
if [[ "$out" == *"no modified files to format"* ]]; then exit 0; fi
if [[ "$out" == *"clang-format did not modify any files"* ]]; then exit 0; fi
# Any other case implies formatting results
echo "ERROR: you need to run clang-format (e.g. using tools/check_coding.sh) on your commit"
# print the errors to show what's the issue
${git_clang_format_cmd}
# fail the pre-commit
exit 1