#!/bin/bash
#
# To enable this hook, link it into .git/hooks/commit-msg like this:
# ln -s ../../Documentation/maintainers/git-hooks-commit-msg .git/hooks/commit-msg

FILE=$1

die() {
	echo "Aborting commit: $1"
	echo "(Your message was saved in $FILE)"
	exit 1
}

summary=`head -n1 "$FILE"`

### Enforce first-line summary ###
if [[ -z `grep '^\[[^]]\+\]' <<< "$summary"` ]] ; then
	die 'Summary (first line) should start with [changed path]'
fi

### Enforce usage of repoman ###
if [[ -n `grep -e '^\[Documentation' <<< "$summary"` ]] ; then
	# Do not enforce usage of repoman where it makes no sense
	exit 0
elif [[ -n `grep -e '^\[sets' <<< "$summary"` ]] ; then
	# Do not enforce usage of repoman where it makes no sense
	exit 0
elif [[ -n `grep -e '^\[profiles' <<< "$summary"` ]] ; then
	# Do not enforce usage of repoman where it makes no sense
	exit 0
elif [[ -n `grep -e '^\[eclass' <<< "$summary"` ]] ; then
	# Do not enforce usage of repoman where it makes no sense
	exit 0
elif [[ -n `grep -e '^\[metadata' <<< "$summary"` ]] ; then
	# Do not enforce usage of repoman where it makes no sense
	exit 0
elif grep '^NO_REPOMAN' "$FILE" >& /dev/null ; then
	# Allow i-know-what-i-am-doing override
	sed -i -e '/^NO_REPOMAN/d' "$FILE"
	exit 0
elif ! grep -e '(Portage version|Package-Manager' "$FILE" >& /dev/null ; then
	die 'Please use repoman to commit'
fi

exit 0