diplodocus.org Git - nmh/blob - etc/bash_completion_nmh-gen

   1 #! /bin/sh
   2 #
   3 # Generates COMPLETION-BASH from man/mh-chart.man.
   4 #
   5 # This code is Copyright (c) 2016, by the authors of nmh.
   6 # See the COPYRIGHT file in the root directory of the nmh
   7 # distribution for complete copyright information.
   8
   9 mhchart=man/mh-chart.man
  10
  11 #### Extract switches for nmh program.
  12 prog_switches() {
  13     program=$1
  14
  15     #### Extract lines from just after .B program-name to just before
  16     #### blank line, and then only those that start with .RB, e.g.,
  17     #### .RB [ \-list " | " \-nolist ]
  18     #### .RB " | " \-autoheaderencoding ]
  19     #### .RB [ \-\|\-component
  20     awk '/^.B.*(\/| )'"$program"'/,/^$/ {
  21         if (/^\.RB /) print
  22     }' "$mhchart" | \
  23     tr -d '\n' | \
  24     sed -e 's/\.RB //g' -e 's/\[//g' -e 's/\]//g' \
  25         -e 's/\(\\\)*//g' -e 's/-|-/-/g' -e 's/" *| "//g' \
  26         -e 's/^ *//' -e 's/ *$//' -e 's/  */ /g'
  27 }
  28
  29 cat <<'EOF'
  30 # bash completions for nmh commands                        -*- shell-script -*-
  31 # This file was generated by etc/bash_completion_nmh-gen.
  32 #
  33 # This code is Copyright (c) 2016, by the authors of nmh.
  34 # See the COPYRIGHT file in the root directory of the nmh
  35 # distribution for complete copyright information.
  36 #
  37 # To use:  source at a bash prompt or in an initialization file.
  38
  39 _nmh() {
  40   local -a switches
  41
  42   COMPREPLY=()
  43   #### Complete filenames.
  44   compopt -o default
  45
  46   case ${COMP_WORDS[COMP_CWORD]} in
  47   -*) case $1 in
  48 EOF
  49
  50 #### Extract program names from lines such as:
  51 #### .B %nmhlibexecdir%/install\-mh
  52 #### .B new \-mode fnext
  53 programs=`egrep '\.B [^\-]' "$mhchart" | \
  54           sed -e 's/^\.B //' -e 's/ .*//' -e 's|%[^%]*%/||' -e 's/\\-/-/'`
  55 for program in $programs; do
  56     switches=`prog_switches "$program"`
  57     # Support mime as alias for mhbuild.
  58     [ "$program" = mhbuild ]  &&  program='mhbuild|mime'
  59     printf '      %s) switches=(%s) ;;\n' "$program" "$switches"
  60
  61 done
  62 programs="$programs mime"
  63
  64 cat <<'EOF'
  65       esac ;;
  66
  67   +*) switches=($(folder -all -fast -recurse | sed 's/^/+/')) ;;
  68
  69   #### Complete special message names, except after -file.  The compopt -o default above provides filename completions.  Assume that -file was fully completed, so don't need to match -fil, etc.
  70   [flc.np]*) [ ${COMP_CWORD:-0} -lt 2  -o  ${COMP_WORDS[$(($COMP_CWORD - 1))]} != -file ]  &&
  71                  switches=(first last cur . next prev) ;;
  72   esac
  73
  74   #### Special case:  add "new" to mhpath's completions.
  75   [ $1 = mhpath ]  &&  switches=("${switches[*]}" + new)
  76
  77   COMPREPLY=($(compgen -W "${switches[*]}" -- ${COMP_WORDS[COMP_CWORD]}))
  78 }
  79
  80 EOF
  81
  82 #### There better not be an nmh program name with whitespace in it.
  83 echo complete -F _nmh $programs