# gbsplay/gbsinfo bash completion
#
# 2008 (c) Christian Garbs <mitch@cgarbs.de>
# licensed under GNU GPL
#
# based on the ditz bash completion code

_gbsplay() 
{
    local cur=${COMP_WORDS[COMP_CWORD]}

    if [ "${cur:0:1}" = '-' ]; then
	# looks like an option, return list of all options
	COMPREPLY=( $( compgen -W "-E -f -g -h -l -o -q -r -R -t -T -v -V -z -Z -1 -2 -3 -4" -- $cur ) )
    elif [[ "${COMP_WORDS[$(( ${COMP_CWORD} - 1))]}" =~ '^-.*o$' ]]; then
	# previous word contained -o, return list of plugouts
	COMPREPLY=( $( compgen -W "$(gbsplay -o list 2>/dev/null | ( read; cut -d -  -f 1 )) list" -- $cur ) )
    else
	# calculate position of filename
	local filepos=1
	while [ "${COMP_WORDS[filepos]:0:1}" = '-' ]; do
	    if [[ "${COMP_WORDS[$(( filepos ))]}" =~ '^-.*o$' ]]; then
		# jump over parameter to -o
		let filepos++
	    fi
	    let filepos++
	done
	if [ $(( $COMP_CWORD - $filepos )) -eq 0 ] ; then
	    # this is the filename
	    COMPREPLY=( $( compgen -f -X '!*.gbs' -- $cur) $(compgen -d -o dirnames -- $cur ))
	elif [ $(( $COMP_CWORD - $filepos )) -eq 1 ] ; then
	    # this is the subsong start
	    COMPREPLY=( $( compgen -W "$(seq $(gbsinfo ${COMP_WORDS[filepos]} 2>/dev/null | grep ^Subsongs | cut -d: -f 2) 2>/dev/null)" -- $cur ) )
	elif [ $(( $COMP_CWORD - $filepos )) -eq 2 ] ; then
	    # this is the subsong stop...
	    if [[ ${COMP_WORDS[COMP_CWORD - 1]} =~ '^[0-9]+$' ]] ; then
		# ...but only if subsong start was given before
		COMPREPLY=( $( compgen -W "$(seq $(gbsinfo ${COMP_WORDS[filepos]} 2>/dev/null | grep ^Subsongs | cut -d: -f 2) 2>/dev/null)" -- $cur ) )
	    fi
	fi
    fi
}


_gbsinfo() 
{
    local cur=${COMP_WORDS[COMP_CWORD]}

    if [ "${cur:0:1}" = '-' ]; then
	# looks like an option, return list of all options
	COMPREPLY=( $( compgen -W "-h -V" -- $cur ) )
    else
	# calculate position of filename
	local filepos=1
	while [ "${COMP_WORDS[filepos]:0:1}" = '-' ]; do
	    let filepos++
	done
	if [ $(( $COMP_CWORD - $filepos )) -eq 0 ] ; then
	    # this is the filename
	    COMPREPLY=( $( compgen -f -X '!*.gbs' -- $cur) $(compgen -d -o dirnames -- $cur ))
	fi
    fi
}

complete -F _gbsplay -o plusdirs gbsplay
complete -F _gbsinfo -o plusdirs gbsinfo