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Forked from AustinDizzy/pre-commit
Created October 26, 2016 10:54
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A pre-commit git hook that prompts you to automatically `gofmt` Go files staged to commit.
#!/bin/sh
# Modified 2015, Austin Dizzy
# 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.
gofiles=$(git diff --cached --name-only --diff-filter=ACM | grep '.go$')
[ -z "$gofiles" ] && exit 0
unformatted=$(gofmt -l $gofiles)
[ -z "$unformatted" ] && exit 0
# Some files are not gofmt'd. Print message and fail.
echo >&2 "The following Go files are not gofmt'd:"
for fn in $unformatted; do
echo >&2 " [*] $fn"
done
exec < /dev/tty
read -p "Would you like to gofmt them? (Y/n) " yn
if [ "$yn" = "" ]; then
yn='Y'
fi
case $yn in
[Yy])
for fn in $unformatted; do
eval "gofmt -w $PWD/$fn"
eval "git add $PWD/$fn"
done
;;
[Nn]) exit 0
;;
* ) echo "Please answer y or n for yes or no.";;
esac
exec <&-
exit 0
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