bash_completion

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