CKAN bash completion

ckan.sh

_ckan()
{
    local cur=${COMP_WORDS[COMP_CWORD]}
    if [ $COMP_CWORD -eq 1 ]; then
        # Complete command
        local commands="$(ckan help 2>&1 | grep -e '^  ' | awk '{print $1}')"
        COMPREPLY=( $(compgen -W "$commands" -- $cur) )
        return
    fi
    local command="${COMP_WORDS[1]}"
    case "$command" in
    install|show)
        local available="$(ckan available | grep '^\*' | awk '{print $2}')"
        COMPREPLY=( $(compgen -W "$available" -- $cur) )
        ;;
        
    remove)
        local installed="$(ckan list | grep '^. ' | awk '{print $2}')"
        COMPREPLY=( $(compgen -W "$installed" -- $cur) )
        ;;
    esac
}
complete -F _ckan ckan