bash_completion

   1 # Copyright (C) 2007 Andre Noll <maan@tuebingen.mpg.de>
   2 #
   3 # Licensed under the GPL v2. For licencing details see COPYING.
   4
   5 _para_complete()
   6 {
   7         local prg="$1" # the program to execute
   8         local cur=${COMP_WORDS[$COMP_CWORD]}
   9         local line="$COMP_LINE" OLD_IFS="$IFS"
  10         local opts n
  11
  12         # This extracts short and long options from the help output
  13         local script='{
  14                 if ($1 ~ "-[a-zA-Z]," && $2 ~ "--[a-zA-Z]") {
  15                         print substr($1, 0, 2);
  16                         gsub("=.*", "", $2)
  17                         print $2
  18                 } else if ($1 ~ "--[a-zA-Z]") {
  19                         gsub("=.*", "", $1)
  20                         print $1
  21                 }
  22         }'
  23
  24         if [[ "$cur" == -* ]]; then # option
  25                 # Depending on whether '--' is one of the previous words we
  26                 # complete either on local options, i.e. those of the program
  27                 # to execute, or call the program to print possible completions
  28                 # (to a subcommand).
  29                 local_opts=true
  30                 for ((i=0; i < $COMP_CWORD; i++)); do
  31                         [[ "${COMP_WORDS[$i]}" != '--' ]] && continue
  32                         local_opts=false
  33                         break
  34                 done
  35                 if [[ "$local_opts" == "true" ]]; then
  36                         result="-- $($prg --help | awk "$script")"
  37                         COMPREPLY=($(compgen -W "$result" -- $cur))
  38                         return
  39                 fi
  40         fi
  41         # We need to call the program with --complete to get the possible
  42         # completions. Before that, all local options must be discarded.
  43         IFS=' '
  44         n=0
  45         for word in $line; do
  46                 ((n > 0)) && ! [[ "$word" == -* ]] && break
  47                 line="${line##*( )}" # remove leading whitespace
  48                 line="${line##+([^ ])}"
  49                 line="${line##*( )}"
  50                 let n++
  51                 [[ "$word" == '--' ]] && break
  52         done
  53         IFS="$OLD_IFS"
  54         s=$((${#COMP_LINE} - ${#line})) # how many characters have been cut
  55         if (($COMP_POINT > $s)); then
  56                 COMP_POINT=$(($COMP_POINT - $s))
  57         else
  58                 COMP_POINT=0
  59         fi
  60         COMP_LINE="$line"
  61         #echo "line: $COMP_LINE, point: $COMP_POINT"
  62         export COMP_LINE COMP_POINT
  63         result=($($prg --complete))
  64
  65         # the last line of the output contains the options for compopt,
  66         # prefixed with '-o='.
  67         n=${#result[@]}
  68         (($n == 0)) && return # oops, $prg did not write any output
  69         let n--
  70         opts="${result[$n]}"
  71         result[$n]=
  72         opts="${opts#-o=}"
  73         IFS=','
  74         compopt +o nospace
  75         for opt in $opts; do
  76                 #echo "opt: $opt"
  77                 case "$opt" in
  78                 filenames) compopt -o filenames;;
  79                 nospace) compopt -o nospace;;
  80                 esac
  81         done
  82         IFS="$OLD_IFS"
  83         COMPREPLY=(${result[@]})
  84 }
  85
  86 _para_audioc()
  87 {
  88         _para_complete para_audioc
  89 }
  90 complete -F _para_audioc para_audioc
  91
  92 _para_client()
  93 {
  94         _para_complete para_client
  95 }
  96 complete -o default -o nospace -F _para_client para_client
  97 complete -o default -o nospace -F _para_client para