#!/bin/sh

set -eu

COLOUR=auto
case "${1:-}" in
--color=auto|--colour=auto) shift ;;
--color=yes|--colour=yes|--color|--colour) COLOUR=true; shift ;;
--color=no|--colour=no) COLOUR=false; shift ;;
esac

if [ "$COLOUR" = auto -a -t 1 ]; then
	COLOUR=true
elif [ "$COLOUR" != true ]; then
	COLOUR=false
fi

if $COLOUR; then
	COLOUR="$(printf '\x1b[32m')"
	NORMAL="$(printf '\x1b[39;49m')"
else
	COLOUR=
	NORMAL=
fi

while [ "$PWD" != / -a ! -s "$PWD/.repo/manifest.xml" ]; do
	cd ..
done

if [ ! -s "$PWD/.repo/manifest.xml" ]; then
	echo "not in a repo tree" >&2
	exit 1
fi

GIT="`which git`"
git() {
	local dir="$1"
	shift
	"$GIT" --git-dir "$dir/.git" --work-tree "$dir" "$@"
}

case "${0##*/}" in
repo-grep)
	if [ $# -gt 0 ]; then
		repo list -p | while read p; do
			git "$p" grep ${COLOUR:+--color=always} "$@" | sed -e "s|^|$COLOUR$p$NORMAL/|"
		done
	fi
	;;
repo-find|*)
	repo list -p | while read p; do
		if [ $# -gt 0 ]; then
			git "$p" ls-files | grep "$@"
		else
			git "$p" ls-files
		fi | sed -e "s|^|$COLOUR$p$NORMAL/|"
	done
	;;
esac