[Bash-completion-devel] wget completion

[gibboris at gmail.com]

Hello,
I just tried a first attempt for the wget completion (see attachement).
(it's also my first completion)

- case statements are not yet "optimised".
- don't know how to specifically set a COMPREPLY as an option which
  requires a parameter (want to see "=" appended to the option list)
  A solution would be to append '=' to theses options in $cur case
  and use --option=) in $prev case, but maybe a cleaner solution exists ?
- long option where a short option exists are not given in the
  completion of long options ([ [:blank:]]), why ?
  Don't know myself, but I ""feel"" I should handle them separatly.
- any way to complete (or at least to give a clue about the value
  expected) for an option waiting for a numeric parameter ?
  This question joins the above one about appending a '=' to parametered
  options.
- doubts about completion of main argument, ideas :
  "f" --> "tp://"
  "h" --> "ttp"
  "http" --> "s://" | "://"
  "w" | "http://w" | "https://w" --> "www."
- completing -O, --output-document, --output-file, and -o
  make overwriting easier ... should they be implemented ?
Will continue soon, but I first would like any
comment/advice/criticism/whatever.

Raph
-------------- next part --------------
# wget(1) completion
# Copyright 2009 Droz Raphaël <gibboris at gmail.com>
# License: GNU GPL v2 or later
#
# $Id: wget,v 0.1 2009/03/13 19:35:22 r4ph Exp $

_wget()
{
    local cur prev

    COMPREPLY=()
    cur=`_get_cword`
    prev=${COMP_WORDS[COMP_CWORD-1]}
    
    case "$prev" in
	--progress)
	    COMPREPLY=( $( compgen -W 'bar dot' -- $cur ) )
	    return 0
	    ;;
	--bind-address|--exclude-domains|--domains|-D)
	    _known_hosts
	    return 0
	    ;;
	--restrict-file-names)
	    COMPREPLY=( $( compgen -W 'unix windows' -- $cur ) )
	    #todo : ,nocontrol
	    return 0
	    ;;
	--prefer-family)
	    COMPREPLY=( $( compgen -W 'IPv4 IPv6 none' -- $cur ) )
            return 0
            ;;
        --directory-prefix|--ca-directory|-P)
            _filedir -d
            return 0
            ;;
        --load-cookies|--save-cookies|--post-file|--certificate|--ca-certificate|--private-key|--random-file|--egd-file|--append-output|-a)
	    _filedir
	    return 0
	    ;;
	--input-file|-i)
	    _filedir && COMPREPLY=( "${COMPREPLY[@]}" - )
	    return 0
	    ;;
	--secure-protocol)
	    COMPREPLY=( $( compgen -W 'auto SSLv2 SSLv3 TLSv1' -- $cur ) )
	    return 0
	    ;;
	--certificate-type|--private-key-type)
	    COMPREPLY=( $( compgen -W 'PEM DER' -- $cur ) )
	    return 0
	    ;;
	--follow-tags|--ignore-tags)
	     COMPREPLY=( $( compgen -W 'a abbr acronym address applet area b base basefont bdo big blockquote \
	     		body br button caption center cite code col colgroup dd del dir div dfn dl dt em fieldset \
	     		font form frame frameset h6 head hr html i iframe img input ins isindex kbd label legend \
	     		li link map menu meta noframes noscript object ol optgroup option p param pre q s samp \
	     		script select small span strike strong style sub sup table tbody td textarea tfoot th \
	     		thead title tr tt u ul var xmp' -- $cur ) )
	     return 0
	     ;;
	     #TODO : long options with a parameter not defined above
    esac

    case "$cur" in
	--*)
	    #parametered ones first (only those defined above)
	    #then long non-parametered ones
	    COMPREPLY=( $( compgen -W "--progress --bind-address --restrict-file-names --prefer-family --directory-prefix \
	    --load-cookies --save-cookies --post-file --certificate --ca-certificate --private-key --random-file \
	    --egd-file --secure-protocol --append-output --input-file \
	    --certificate-type --private-key-type --ca-directory --exclude-domains --domains --follow-tags --ignore-tags \
	    \
	    $(wget -h | sed -n 's/^[ [:blank:]]*\(--[a-z-]*\)[ [:blank:]].*$/\1/Ip')" -- $cur ) )
	    return 0
	    ;;
	-*)
	    COMPREPLY=( $( compgen -W "$(wget -h | sed -n 's/^[ [:blank:]]*\(-[a-z46]\).*$/\1/Ip')" -- $cur ) )
	    return 0
	    ;;
	#*)
	#    COMPREPLY=( $( compgen -W 'http:// https:// ftp:// ftp:// file://' -- $cur ) )
	#    return 0
	#    ;;
    esac

    return 0
}
complete -F _wget -o default wget