#!/bin/sh -e

if [ -n "${SKIP_GCF}" ]; then

# Running inside of another git-clang-format hook

exit 0

fi

if ! command -v git-clang-format >/dev/null 2>&1 ; then

printf "\e[1;33mgit-clang-format is not installed!\e[0m

Install clang to enable auto-formatting.

" >&2

exit 0

fi

if ! git diff-files --quiet ; then

printf "\e[1;33mWill not git-clang-format: repository is dirty\e[0m. \e[33m \

Stage (with 'git add') or stash (with 'git stash') all files before committing \

to apply formatting.\e[0m

" >&2

exit 0

fi

printf "\e[2;37;40mRunning git-clang-format...\e[0m" >&2

if CLANG_FORMAT_RESULT="$(git-clang-format HEAD^)"; then

GCF_STATUS=0

else

GCF_STATUS=$?

fi

# git-clang-format returns 1 when it successfully applies formatting changes.

# Any other nonzero status indicates an actual failure.

if [ "${GCF_STATUS}" -gt 1 ]; then

printf "%s\n" "${CLANG_FORMAT_RESULT}" >&2

printf "git-clang-format failed with status %s\n" "${GCF_STATUS}" >&2

exit "${GCF_STATUS}"

fi

if git diff-files --quiet ; then

printf "\r\e[2;32mAll code changes were properly formatted\e[0m\n" >&2

else

BAD_COMMIT=$(git rev-parse --short HEAD)

printf "\r\e[0;33mCode formatting changes were required:\e[0m\n" >&2

printf "${CLANG_FORMAT_RESULT}\n" >&2

git add -u :/

SKIP_GCF=1 git commit --amend -C HEAD >/dev/null

GOOD_COMMIT=$(git rev-parse --short HEAD)

printf "\e[2;37mTo view formatting changes:

git diff ${BAD_COMMIT} ${GOOD_COMMIT}\e[0m

" >&2

fi