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#!/bin/bash
set -e
die() {
printf '%s\n' "$*" >&2
exit 1
}
EXCLUDE_PATHS_TOPLEVEL=(
"src/c-list"
"src/c-rbtree"
"src/c-siphash"
"src/c-stdaux"
"src/libnm-std-aux/unaligned.h"
"src/libnm-systemd-core/src"
"src/libnm-systemd-shared/src"
"src/linux-headers"
"src/n-acd"
"src/n-dhcp4"
)
NM_ROOT="$(git rev-parse --show-toplevel)" || die "not inside a git repository"
NM_PREFIX="$(git rev-parse --show-prefix)" || die "not inside a git repository"
if [ ! -f "$NM_ROOT/.clang-format" ]; then
die "Error: the clang-format file in \"$NM_ROOT\" does not exist"
fi
if ! command -v clang-format &> /dev/null; then
die "Error: clang-format is not installed. On RHEL/Fedora/CentOS run 'dnf install clang-tools-extra'"
fi
if test -n "$NM_PREFIX"; then
EXCLUDE_PATHS=()
for e in "${EXCLUDE_PATHS_TOPLEVEL[@]}"; do
REGEX="^$NM_PREFIX([^/].*)$"
if [[ "$e" =~ $REGEX ]]; then
EXCLUDE_PATHS+=("${BASH_REMATCH[1]}")
fi
done
else
EXCLUDE_PATHS=("${EXCLUDE_PATHS_TOPLEVEL[@]}")
fi
FILES=()
HAS_EXPLICIT_FILES=0
SHOW_FILENAMES=0
TEST_ONLY=0
CHECK_ALL=1
usage() {
printf "Usage: %s [OPTION]... [FILE]...\n" "$(basename "$0")"
printf "Reformat source files using NetworkManager's code-style.\n\n"
printf "If no file is given the script runs on the whole codebase.\n"
printf "OPTIONS:\n"
printf " -h Print this help message.\n"
printf " -i Reformat files (the default).\n"
printf " -n|--dry-run Only check the files (contrary to \"-i\").\n"
printf " -a|--all Check all files (the default).\n"
printf " -F|--fast Check only files from \`git diff --name-only HEAD^\` (contrary to \"-a\").\n"
printf " This also affects directories given in the [FILE] list, but not files.\n"
printf " --show-filenames Only print the filenames that would be checked/formatted\n"
printf " -- Separate options from filenames/directories\n"
}
ls_files_filter() {
local OLD_IFS="$IFS"
IFS=$'\n'
for f in $(cat) ; do
local found=1
local p
for p; do
[[ "$f" = "$p/"* ]] && found=
[[ "$f" = "$p" ]] && found=
done
test -n "$found" && printf '%s\n' "$f"
done
IFS="$OLD_IFS"
}
g_ls_files() {
local pattern="$1"
shift
if [ $CHECK_ALL = 1 ]; then
git ls-files -- "$pattern"
else
git diff --name-only HEAD^ -- "$pattern"
fi | ls_files_filter "$@"
}
HAD_DASHDASH=0
while (( $# )); do
if [ "$HAD_DASHDASH" = 0 ]; then
case "$1" in
-h)
usage
exit 0
;;
--show-filenames)
SHOW_FILENAMES=1
shift
continue
;;
-a|--all)
CHECK_ALL=1
shift
continue
;;
-F|--fast)
CHECK_ALL=0
shift
continue
;;
-n|--dry-run)
TEST_ONLY=1
shift
continue
;;
-i)
TEST_ONLY=0
shift
continue
;;
--)
HAD_DASHDASH=1
shift
continue
;;
esac
fi
if [ -d "$1" ]; then
while IFS='' read -r line;
do FILES+=("$line")
done < <(CHECK_ALL=$CHECK_ALL g_ls_files "${1}/*.[hc]" "${EXCLUDE_PATHS[@]}")
elif [ -f "$1" ]; then
FILES+=("$1")
else
usage >&2
echo >&2
die "Unknown argument \"$1\" which also is neither a file nor a directory."
fi
shift
HAS_EXPLICIT_FILES=1
done
if [ $HAS_EXPLICIT_FILES = 0 ]; then
while IFS='' read -r line; do
FILES+=("$line")
done < <(CHECK_ALL=$CHECK_ALL g_ls_files '*.[ch]' "${EXCLUDE_PATHS[@]}")
fi
if [ $SHOW_FILENAMES = 1 ]; then
for f in "${FILES[@]}" ; do
printf '%s\n' "$f"
done
exit 0
fi
if [ "${#FILES[@]}" = 0 ]; then
if [ $CHECK_ALL = 1 ]; then
die "Error: no files to check"
fi
exit 0
fi
FLAGS_TEST=( --Werror -n --ferror-limit=1 )
if [ $TEST_ONLY = 1 ]; then
# We assume that all formatting is correct. In that mode, passing
# all filenames to clang-format is significantly faster.
#
# Only in case of an error, we iterate over the files one by one
# until we find the first invalid file.
for f in "${FILES[@]}"; do
[ -f "$f" ] || die "Error: file \"$f\" does not exist (or is not a regular file)"
done
clang-format "${FLAGS_TEST[@]}" "${FILES[@]}" &>/dev/null && exit 0
for f in "${FILES[@]}"; do
[ -f "$f" ] || die "Error: file \"$f\" does not exist (or is not a regular file)"
if ! clang-format "${FLAGS_TEST[@]}" "$f" &>/dev/null; then
FF="$(mktemp)"
trap 'rm -f "$FF"' EXIT
clang-format "$f" 2>/dev/null > "$FF"
git --no-pager diff "$f" "$FF" || :
die "Error: file \"$f\" has code-style is wrong. Fix it by running "'`'"\"$0\" -i \"$f\""'`'
fi
done
die "an unknown error happened."
fi
clang-format -i "${FILES[@]}"
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