# Gentoo linux command completion.
#
_emerge()
{
	local cur prev grepcmd sedcmd systemactions setsma setbig portagedir

	portagedir=/usr/portage

	COMPREPLY=()
	cur=${COMP_WORDS[COMP_CWORD]}
	prev=${COMP_WORDS[COMP_CWORD-1]}

	if [ $COMP_CWORD -eq 1 ] && [[ "$cur" == -* ]]; then
		COMPREPLY=( $( compgen -W '--pretend \
			--autoclean \
			--usepkg \
			--buildpkg' | grep ^$cur ) )
	elif [ "$prev" == "--usepkg" ]; then
		COMPREPLY=( $( compgen -f $cur ) )
	else
		cd ${portagedir}
		grepcmd="grep -E ^$cur.*"
		sedcmd="sed -e /CVS/d \
						-e /BUGS-TODO/d \
						-e /ChangeLog.*/d \
						-e /header.txt/d \
						-e /skel.build/d \
						-e /distfiles/d \
						-e /eclass/d \
						-e /files/d \
						-e /incoming/d \
						-e /packages/d \
						-e /profiles/d \
						-e /scripts/d"
		systemactions=$'\n'"system"$'\n'"update"
		if [ $cur ]; then
			if [ `echo $cur | grep '/'` ]; then
				setbig="`compgen -G "$cur*" | $sedcmd`"$systemactions
				COMPREPLY=( $( echo "$setbig" | $grepcmd ) )
			else
				setsma="`compgen -S '/' -G "$cur*" | $sedcmd`"$systemactions
				if [ `echo "$setsma" | $grepcmd | grep '/' | wc -l` = 1 ]; then
					setbig="`compgen -G "*/*" | $sedcmd`"$systemactions
					COMPREPLY=( $( echo "$setbig" | $grepcmd ) )
				else
					COMPREPLY=( $( echo "$setsma" | $grepcmd ) )
				fi
			fi
		else
			setsma="`compgen -S '/' -G "$cur*" | $sedcmd`"$systemactions
			COMPREPLY=( $( echo "$setsma" ) )
		fi
	fi
		
	return 0
}
complete -F _emerge emerge

_ebuild()
{
	local cur prev

	COMPREPLY=()
	cur=${COMP_WORDS[COMP_CWORD]}
	prev=${COMP_WORDS[COMP_CWORD-1]}
		
	if [ $COMP_CWORD -eq 1 ]; then
		COMPREPLY=( $( compgen -f $cur ) )
	elif [ $COMP_CWORD -eq 2 ]; then
		COMPREPLY=( $( compgen -W 'clean \
			compile \
			fetch \
			install \
			merge \
			package \
			qmerge \
			remerge \
			rpm \
			unmerge \
			unpack' $cur ) )
	fi

	return 0
}
complete -F _ebuild ebuild

_rc-update()
{
	local cur prev initdir runlvdir

	initdir=/etc/init.d/
	runlvdir=/etc/runlevels/

	COMPREPLY=()
	cur=${COMP_WORDS[COMP_CWORD]}
	prev=${COMP_WORDS[COMP_CWORD-1]}
		
	if [ $COMP_CWORD -eq 1 ]; then
		COMPREPLY=( $( compgen -W 'add del' $cur ) )
	elif [ $COMP_CWORD -eq 2 ]; then
		cd $initdir
		COMPREPLY=( $( compgen -G "$cur*" ) )
	elif [ $COMP_CWORD -eq 3 ]; then
		cd $runlvdir
		COMPREPLY=( $( compgen -G "$cur*" ) )
	fi

	return 0
}
complete -F _rc-update rc-update