# povray completion                                        -*- shell-script -*-
# by "David Necas (Yeti)" <yeti@physics.muni.cz>

proc _povray
{
    var cur = '', prev = '', words = '', cword = ''
    _init_completion || return

    var povcur = $cur, pfx = '', oext = '', defoext = ''
    set defoext = 'png' # default output extension, if cannot be determined FIXME

    _expand || return 0

    match $povcur {
        with [-+]I*
            set cur = $(povcur#[-+]I) # to confuse _filedir
            set pfx = $(povcur%"$cur")
            _filedir pov
            setglobal COMPREPLY = '( '${COMPREPLY[@]/#/$pfx} )
            return 0
            
        with [-+]O*
            # guess what output file type user may want
            match $[ shell { setglobal IFS = '$'\n''; command grep '^[-+]F' <<<$(words[*]) }] {
                with [-+]FN set oext = 'png' 
                with [-+]FP set oext = 'ppm' 
                with [-+]F[CT] set oext = 'tga' 
                with * set oext = $defoext 
            }
            # complete filename corresponding to previously specified +I
            setglobal COMPREPLY = '( '$( ( IFS=$'\n'; command grep '^[-+]I' <<<"${words[*]}" ) ) )
            setglobal COMPREPLY = '( '${COMPREPLY[@]#[-+]I} )
            setglobal COMPREPLY = '( '${COMPREPLY[@]/%.pov/.$oext} )
            set cur = $(povcur#[-+]O) # to confuse _filedir
            set pfx = $(povcur%"$cur")
            _filedir $oext
            setglobal COMPREPLY = '( '${COMPREPLY[@]/#/$pfx} )
            return 0
            
        with *.ini\[|*.ini\[*[^]] # sections in .ini files
            set cur = $(povcur#*\[)
            set pfx = $(povcur%\["$cur") # prefix == filename
            [[ -r $pfx ]] || return 0
            setglobal COMPREPLY = '( '$(sed -e 's/^[[:space:]]*\[\('"$cur"'[^]]*\]\).*$/\1/' \
                -e 't' -e 'd' -- "$pfx") )
            # to prevent [bar] expand to nothing.  can be done more easily?
            setglobal COMPREPLY = '( '"${COMPREPLY[@]/#/$pfx[}" )
            return 0
            
        with *
            _filedir '@(ini|pov)'
            return 0
            
    }
} &&
complete -F _povray povray xpovray spovray

# ex: ts=4 sw=4 et filetype=sh