#!/bin/sh

USAGE='[--staged] [--changed] [--untracked]'
SUBDIRECTORY_OK=1 . git-sh-setup
require_work_tree

print_stat_line() {
	case "$1" in
		M)	echo "#       modified:  $2";;
		A)	echo "#       new file:  $2";;
		R*)	echo "#       renamed:   $2 -> $3";;
		D)	echo "#       deleted:   $2";;
		U)	echo "#       unmerged:  $2";;
		X)	echo "#       $2";;
		*)	echo "#       [$S]:      $2";;
	esac
}

STAGED= CHANGED= UNTRACKED= HP=

while test $# != 0
do
	case "$1" in
		-s|--staged) STAGED=1; shift;;
		-c|--changed) CHANGED=1; shift;;
		-u|--untracked) UNTRACKED=1; shift;;
		--) shift; break;;
		-*) usage;;
		 *) break;;
	esac
done

if BRANCH_NAME=$(git symbolic-ref -q HEAD)
then
	BRANCH_NAME="On branch $(expr "z$BRANCH_NAME" : 'zrefs/heads/\(.*\)')"
else
	BRANCH_NAME="Not currently on any branch"
fi

[ "$#" = 0 ] && cd_to_toplevel


if [ -z "$STAGED$CHANGED$UNTRACKED" ]; then
	STAGED=1; CHANGED=1; UNTRACKED=1
fi

SP=$(echo _/$(git rev-parse --show-cdup)|tr '/' ' '|wc -w)

echo "# $BRANCH_NAME"

# Changes to be commited
[ "$STAGED" ] && git-diff --name-status --cached -M -- "$@"|while read S F R
do
	if [ -z "$HP" ]; then
		echo '# Changes to be committed:'
		echo '#   (use "git reset HEAD <file>..." to unstage)'
		echo '#'
		HP=1
	fi
	F=$(echo $F|cut -d'/' -f$SP-)
	print_stat_line "$S" "$F" "$R"

done

# Changed but not updated
[ "$CHANGED" ] && git-diff --name-status -- "$@"|while read S F
do
	if [ -z "$HP" ]; then
		echo '#'
		echo '# Changed but not updated:'
		echo '#   (use "git add <file>..." to update what will be committed)'
		echo '#'
		HP=1
	fi
	F=$(echo $F|cut -d'/' -f$SP-)
	print_stat_line "$S" "$F"
done

# Untracked files
[ "$UNTRACKED" ] && git-ls-files --exclude-per-directory=.gitignore -o --directory -- "$@"|while read F
do
	if [ -z "$HP" ]; then
		echo '#'
		echo '# Untracked files:'
		echo '#   (use "git add <file>..." to include in what will be committed)'
		echo '#'
		HP=1
	fi
	print_stat_line "X" "$F"
done