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|
#!/bin/bash
#
# Check or apply/fix the project coding style to all files passed as arguments.
# Uses clang-format for C and flake8 for Python.
#
# Requires clang-format version 10 (apt install clang-format-10).
#
CLANG_FORMAT=${CLANG_FORMAT:-clang-format}
set -e
ret=0
if [[ -z $1 ]]; then
echo "Usage: $0 [--fix] srcfile1.c srcfile2.h srcfile3.c ..."
echo ""
exit 0
fi
if [[ $1 == "--fix" ]]; then
fix=1
shift
else
fix=0
fi
clang_format_version=$(${CLANG_FORMAT} --version | sed -Ee 's/.*version ([[:digit:]]+)\.[[:digit:]]+\.[[:digit:]]+.*/\1/')
if [[ $clang_format_version != "10" ]] ; then
echo "$0: clang-format version 10, '$clang_format_version' detected"
exit 1
fi
# Get list of files from .formatignore to ignore formatting for.
ignore_files=( $(grep '^[^#]..' .formatignore) )
function ignore {
local file=$1
local f
for f in "${ignore_files[@]}" ; do
[[ $file == $f ]] && return 0
done
return 1
}
extra_info=""
for f in $*; do
if ignore $f ; then
echo "$f is ignored by .formatignore" 1>&2
continue
fi
lang="c"
if [[ $f == *.py ]]; then
lang="py"
style="pep8"
stylename="pep8"
else
style="file" # Use .clang-format
stylename="C"
fi
check=0
if [[ $fix == 1 ]]; then
# Convert tabs to 8 spaces first.
if grep -ql $'\t' "$f"; then
sed -i -e 's/\t/ /g' "$f"
echo "$f: tabs converted to spaces"
fi
if [[ $lang == c ]]; then
# Run clang-format to reformat the file
${CLANG_FORMAT} --style="$style" "$f" > _styletmp
else
# Run autopep8 to reformat the file.
python3 -m autopep8 -a "$f" > _styletmp
# autopep8 can't fix all errors, so we also perform a flake8 check.
check=1
fi
if ! cmp -s "$f" _styletmp; then
echo "$f: style fixed ($stylename)"
# Use cp to preserve target file mode/attrs.
cp _styletmp "$f"
rm _styletmp
fi
fi
if [[ $fix == 0 || $check == 1 ]]; then
# Check for tabs
if grep -q $'\t' "$f" ; then
echo "$f: contains tabs: convert to 8 spaces instead"
ret=1
fi
# Check style
if [[ $lang == c ]]; then
if ! ${CLANG_FORMAT} --style="$style" --Werror --dry-run "$f" ; then
echo "$f: had style errors ($stylename): see clang-format output above"
ret=1
fi
elif [[ $lang == py ]]; then
if ! python3 -m flake8 "$f"; then
echo "$f: had style errors ($stylename): see flake8 output above"
if [[ $fix == 1 ]]; then
# autopep8 couldn't fix all errors. Let the user know.
extra_info="Error: autopep8 could not fix all errors, fix the flake8 errors manually and run again."
fi
ret=1
fi
fi
fi
done
rm -f _styletmp
if [[ $ret != 0 ]]; then
echo ""
echo "You can run the following command to automatically fix the style:"
echo " $ make style-fix"
[[ -n $extra_info ]] && echo "$extra_info"
fi
exit $ret
|
