wtf/wtf

   1 #!/bin/sh
   2 #
   3 #       $NetBSD: wtf,v 1.18 2012/10/03 19:50:06 wiz Exp $
   4 #
   5 # Public domain
   6 #
   7
   8 PROGNAME="$(basename "$0")"
   9
  10 usage() {
  11         echo "usage: $PROGNAME [-f dbfile] [is] <acronym> ..."
  12         exit 1
  13 }
  14
  15 while getopts f: f
  16 do
  17         case "$f" in
  18         f)
  19                 acronyms="$OPTARG $acronyms"
  20                 ;;
  21         *)
  22                 usage
  23                 ;;
  24         esac
  25 done
  26
  27 shift "$(expr "$OPTIND" - 1)"
  28
  29 if [ "$1" = "is" ]; then
  30         shift
  31 fi
  32
  33 if [ -z "$1" ]; then
  34         usage
  35 fi
  36
  37 if [ -z "$acronyms" ]; then
  38         acronyms=${ACRONYMDB:-$(ls /usr/share/misc/acronyms* 2>/dev/null)}
  39 fi
  40
  41 if [ -z "$acronyms" ]; then
  42         echo "$PROGNAME: acronym database not found!" >&2
  43         exit 1
  44 fi
  45
  46
  47 for f in $acronyms; do
  48         if [ ! -f $f ]; then
  49                 echo "$PROGNAME: cannot open acronym database file \`$f'" >&2
  50                 exit 1
  51         fi
  52 done
  53
  54 rv=0
  55 for i; do
  56         # Search acronym list first
  57         target="$(echo "$i" | tr '[a-z]' '[A-Z]')"
  58         ans="$(fgrep -h "$target" $acronyms 2>/dev/null \
  59              | sed -ne "\|^$target[[:space:]]|s|^$target[[:space:]]*||p")"
  60         if [ -n "$ans" ] ; then
  61                 echo "$target: $ans"
  62                 continue
  63         fi
  64
  65         # Try whatis(1) next
  66         ans="$(whatis "$i" 2>/dev/null)"
  67         if [ $? -eq 0 ]; then
  68                 echo "$ans" | sort -u
  69                 continue
  70         fi
  71
  72         # Try pkg_info(1) next
  73         ans="$(pkg_info -qc "$i" 2> /dev/null)"
  74         if [ $? -eq 0 ]; then
  75                 echo "$i: $ans"
  76                 continue
  77         fi
  78
  79         # Try querying pkgsrc's help facility next
  80         if [ -f ../../mk/bsd.pkg.mk ]; then
  81                 ans="$(make help topic="$i")"
  82                 if [ $? -eq 0 ]; then
  83                         echo "$i: $ans"
  84                         continue
  85                 fi
  86         fi
  87
  88         # Give up!
  89         echo "$PROGNAME: I don't know what \`$i' means!" 1>&2
  90         rv=1
  91 done
  92 exit $rv