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="$IFS"
  10         local opts n
  11
  12         if [[ "$COMP_WORDBREAKS" != ' '  ]]; then
  13                 COMP_WORDBREAKS=' '
  14                 return 124 # try again with proper value
  15         fi
  16         # This extracts short and long options from the help output
  17         local script='{
  18                 if ($1 ~ "-[a-zA-Z]," && $2 ~ "--[a-zA-Z]") {
  19                         print substr($1, 0, 2);
  20                         gsub("=.*", "", $2)
  21                         print $2
  22                 } else if ($1 ~ "--[a-zA-Z]") {
  23                         gsub("=.*", "", $1)
  24                         print $1
  25                 }
  26         }'
  27
  28         if [[ "$cur" == -* ]]; then # option
  29                 # Depending on whether '--' is one of the previous words we
  30                 # complete either on local options, i.e. those of the program
  31                 # to execute, or call the program to print possible completions
  32                 # (to a subcommand).
  33                 local_opts=true
  34                 for ((i=0; i < $COMP_CWORD; i++)); do
  35                         [[ "${COMP_WORDS[$i]}" != '--' ]] && continue
  36                         local_opts=false
  37                         break
  38                 done
  39                 if [[ "$local_opts" == "true" ]]; then
  40                         result="-- $($prg --help | awk "$script")"
  41                         COMPREPLY=($(compgen -W "$result" -- $cur))
  42                         return
  43                 fi
  44         fi
  45         # We need to call the program with --complete to get the possible
  46         # completions. Before that, all local options must be discarded.
  47         IFS=' '
  48         n=0
  49         for word in $line; do
  50                 ((n > 0)) && ! [[ "$word" == -* ]] && break
  51                 line="${line##*( )}" # remove leading whitespace
  52                 line="${line##+([^ ])}"
  53                 line="${line##*( )}"
  54                 let n++
  55                 [[ "$word" == '--' ]] && break
  56         done
  57         IFS="$OLD_IFS"
  58         s=$((${#COMP_LINE} - ${#line})) # how many characters have been cut
  59         if (($COMP_POINT > $s)); then
  60                 COMP_POINT=$(($COMP_POINT - $s))
  61         else
  62                 COMP_POINT=0
  63         fi
  64         COMP_LINE="$line"
  65         #echo "line: $COMP_LINE, point: $COMP_POINT"
  66         export COMP_LINE COMP_POINT
  67         result=($($prg --complete))
  68
  69         # the last line of the output contains the options for compopt,
  70         # prefixed with '-o='.
  71         n=${#result[@]}
  72         (($n == 0)) && return # oops, $prg did not write any output
  73         let n--
  74         opts="${result[$n]}"
  75         result[$n]=
  76         opts="${opts#-o=}"
  77         IFS=','
  78         compopt +o nospace
  79         for opt in $opts; do
  80                 #echo "opt: $opt"
  81                 case "$opt" in
  82                 filenames) compopt -o filenames;;
  83                 nospace) compopt -o nospace;;
  84                 esac
  85         done
  86         IFS="$OLD_IFS"
  87         COMPREPLY=(${result[@]})
  88 }
  89
  90 _para_audioc()
  91 {
  92         _para_complete para_audioc
  93 }
  94 complete -F _para_audioc para_audioc
  95
  96 _para_client()
  97 {
  98         _para_complete para_client
  99 }
 100 complete -o default -o nospace -F _para_client para_client
 101 complete -o default -o nospace -F _para_client para