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#!/bin/bash
# Copyright 2016 Google Inc. All Rights Reserved.
#
# Licensed under the MIT License, <LICENSE or http://opensource.org/licenses/MIT>.
# This file may not be copied, modified, or distributed except according to those terms.
#
# Pre-commit hook for the tarpc repository. To use this hook, copy it to .git/hooks in your
# repository root.
#
# This precommit checks the following:
# 1. All filenames are ascii
# 2. There is no bad whitespace
# 3. rustfmt is installed
# 4. rustfmt is a noop on files that are in the index
#
# Options:
#
# - TARPC_SKIP_RUSTFMT, default = 0
#
# Set this to 1 to skip running rustfmt
#
# Note that these options are most useful for testing the hooks themselves. Use git commit
# --no-verify to skip the pre-commit hook altogether.
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
NC='\033[0m' # No Color
PREFIX="${GREEN}[PRECOMMIT]${NC}"
FAILURE="${RED}FAILED${NC}"
WARNING="${RED}[WARNING]${NC}"
SKIPPED="${YELLOW}SKIPPED${NC}"
SUCCESS="${GREEN}ok${NC}"
if git rev-parse --verify HEAD &>/dev/null
then
against=HEAD
else
# Initial commit: diff against an empty tree object
against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi
FAILED=0
printf "${PREFIX} Checking that all filenames are ascii ... "
# Note that the use of brackets around a tr range is ok here, (it's
# even required, for portability to Solaris 10's /usr/bin/tr), since
# the square bracket bytes happen to fall in the designated range.
if test $(git diff --cached --name-only --diff-filter=A -z $against | LC_ALL=C tr -d '[ -~]\0' | wc -c) != 0
then
FAILED=1
printf "${FAILURE}\n"
else
printf "${SUCCESS}\n"
fi
printf "${PREFIX} Checking for bad whitespace ... "
git diff-index --check --cached $against -- &>/dev/null
if [ "$?" != 0 ]; then
FAILED=1
printf "${FAILURE}\n"
else
printf "${SUCCESS}\n"
fi
printf "${PREFIX} Checking for shasum ... "
command -v shasum &>/dev/null
if [ $? == 0 ]; then
printf "${SUCCESS}\n"
else
printf "${FAILURE}\n"
exit 1
fi
printf "${PREFIX} Running clippy ... "
command -v cargo +nightly clippy &>/dev/null
if [ $? == 0 ]; then
printf "${SUCCESS}\n"
else
printf "${FAILURE}\n"
exit 1
fi
# Just check that running rustfmt doesn't do anything to the file. I do this instead of
# modifying the file because I don't want to mess with the developer's index, which may
# not only contain discrete files.
printf "${PREFIX} Checking formatting ... "
FMTRESULT=0
diff=""
for file in $(git diff --name-only --cached);
do
if [ ${file: -3} == ".rs" ]; then
diff="$diff$(rustfmt $file)"
fi
done
if grep --quiet "^Diff at line" <<< "$diff"; then
FMTRESULT=1
fi
if [ "${TARPC_SKIP_RUSTFMT}" == 1 ]; then
printf "${SKIPPED}\n"$?
elif [ ${FMTRESULT} != 0 ]; then
FAILED=1
printf "${FAILURE}\n"
echo "$diff" | sed 's/Using rustfmt config file.*$/d/'
else
printf "${SUCCESS}\n"
fi
exit ${FAILED}