pre-commit_01_gofmt

#!/bin/sh

# heavily inspired by http://tip.golang.org/misc/git/pre-commit
#
# git gofmt pre-commit hook

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 "Go files must be formatted with gofmt. Please run:\n"
printf >&2 "  gofmt -w"
echo "$unformatted" | while read fn; do
        echo >&2 " \\"
        printf >&2 "    %s/%s" "${PWD}" "${fn}"
done
echo >&2

exit 1