pre-commit

#!/bin/sh
# Copyright 2012 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
 
# git gofmt pre-commit hook
#
# To use, store as .git/hooks/pre-commit inside your repository and make sure
# it has execute permissions.
#
# This script does not handle file names that contain spaces.
 
gofmtcmd="go tool goimports"
 
gofiles=$(git diff --cached --name-only --diff-filter=ACM | grep '.go$' | grep -v '_gen.go$' | grep -v '.pb.go$')
[ -z "$gofiles" ] && exit 0
 
unformatted=$($gofmtcmd -l $gofiles)
[ -z "$unformatted" ] && exit 0
 
# Some files are not gofmt'd. Print message and fail.
 
echo >&2 "Go files must be formatted with '$gofmtcmd'. Please run:"
for fn in $unformatted; do
echo >&2 " $gofmtcmd -w $PWD/$fn"
done
 
exit 1