commit-tree

#!/bin/sh -eu
SHIT_PATH=$(dirname "$0")
. $SHIT_PATH/common.sh

tree="$1"
shift

parents=

while getopts p: opt
do
	case $opt in
		p)
			parents="$(printf "%s" "$OPTARG" | tr -s , ' ')"
			;;
		?)
			printf "Usage: %s [-p <parents...>]\n" "$0" >&2
			exit 1
			;;
	esac
done

# TODO: Read from git config
if [ -z "$GIT_AUTHOR_NAME" ]
then
	printf "GIT_AUTHOR_NAME unset\n"
	exit 1
fi
if [ -z "$GIT_AUTHOR_EMAIL" ]
then
	printf "GIT_AUTHOR_EMAIL unset\n"
	exit 1
fi
GIT_COMMITTER_NAME=${GIT_COMMITTER_NAME:-$GIT_AUTHOR_NAME}
GIT_COMMITTER_EMAIL=${GIT_COMMITTER_EMAIL:-$GIT_AUTHOR_EMAIL}
GIT_AUTHOR_DATE=${GIT_AUTHOR_DATE:-$(date -u +'%s +0000')}
GIT_COMMITTER_DATE=${GIT_COMMITTER_DATE:-$(date -u +'%s +0000')}

printf "tree %s\n" "$tree"
for parent in $parents
do
	printf "parent %s\n" "$parent"
done
printf "author %s <%s> %s\n" \
	"$GIT_AUTHOR_NAME" "$GIT_AUTHOR_EMAIL" "$GIT_AUTHOR_DATE"
printf "committer %s <%s> %s\n" \
	"$GIT_COMMITTER_NAME" "$GIT_COMMITTER_EMAIL" "$GIT_COMMITTER_DATE"
printf "\n"

printf 'Enter your comment message:\n' >&2
cat