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="$IFS"
   7         local opts n
   8
   9         if [[ "$COMP_WORDBREAKS" != ' '  ]]; then
  10                 COMP_WORDBREAKS=' '
  11                 return 124 # try again with proper value
  12         fi
  13         # This extracts short and long options from the help output
  14         local script='{
  15                 if ($1 ~ "-[a-zA-Z]," && $2 ~ "--[a-zA-Z]") {
  16                         print substr($1, 0, 2);
  17                         gsub("=.*", "", $2)
  18                         print $2
  19                 } else if ($1 ~ "--[a-zA-Z]") {
  20                         gsub("=.*", "", $1)
  21                         print $1
  22                 }
  23         }'
  24
  25         if [[ "$cur" == -* ]]; then # option
  26                 # Depending on whether '--' is one of the previous words we
  27                 # complete either on local options, i.e. those of the program
  28                 # to execute, or call the program to print possible completions
  29                 # (to a subcommand).
  30                 local_opts=true
  31                 for ((i=0; i < $COMP_CWORD; i++)); do
  32                         [[ "${COMP_WORDS[$i]}" != '--' ]] && continue
  33                         local_opts=false
  34                         break
  35                 done
  36                 if [[ "$local_opts" == "true" ]]; then
  37                         result="-- $($prg --help | awk "$script")"
  38                         COMPREPLY=($(compgen -W "$result" -- $cur))
  39                         return
  40                 fi
  41         fi
  42         # We need to call the program with --complete to get the possible
  43         # completions. Before that, all local options must be discarded.
  44         IFS=' '
  45         n=0
  46         for word in $line; do
  47                 ((n > 0)) && ! [[ "$word" == -* ]] && break
  48                 line="${line##*( )}" # remove leading whitespace
  49                 line="${line##+([^ ])}"
  50                 line="${line##*( )}"
  51                 let n++
  52                 [[ "$word" == '--' ]] && break
  53         done
  54         IFS="$OLD_IFS"
  55         s=$((${#COMP_LINE} - ${#line})) # how many characters have been cut
  56         if (($COMP_POINT > $s)); then
  57                 COMP_POINT=$(($COMP_POINT - $s))
  58         else
  59                 COMP_POINT=0
  60         fi
  61         COMP_LINE="$line"
  62         #echo "line: $COMP_LINE, point: $COMP_POINT"
  63         export COMP_LINE COMP_POINT
  64         result=($($prg --complete))
  65
  66         # the last line of the output contains the options for compopt,
  67         # prefixed with '-o='.
  68         n=${#result[@]}
  69         (($n == 0)) && return # oops, $prg did not write any output
  70         let n--
  71         opts="${result[$n]}"
  72         result[$n]=
  73         opts="${opts#-o=}"
  74         IFS=','
  75         compopt +o nospace
  76         for opt in $opts; do
  77                 #echo "opt: $opt"
  78                 case "$opt" in
  79                 filenames) compopt -o filenames;;
  80                 nospace) compopt -o nospace;;
  81                 esac
  82         done
  83         IFS="$OLD_IFS"
  84         COMPREPLY=(${result[@]})
  85 }
  86
  87 _para_audioc()
  88 {
  89         _para_complete para_audioc
  90 }
  91 complete -F _para_audioc para_audioc
  92
  93 _para_client()
  94 {
  95         _para_complete para_client
  96 }
  97 complete -o default -o nospace -F _para_client para_client
  98 complete -o default -o nospace -F _para_client para