bin/ksh/siglist.sh

   1 #!/bin/sh
   2 #       $NetBSD: siglist.sh,v 1.7 2008/10/19 22:10:04 apb Exp $
   3 #
   4 # Script to generate a sorted, complete list of signals, suitable
   5 # for inclusion in trap.c as array initializer.
   6 #
   7
   8 set -e
   9
  10 : ${AWK:=awk}
  11 : ${SED:=sed}
  12
  13 in=tmpi$$.c
  14 out=tmpo$$.c
  15 ecode=1
  16 trapsigs='0 1 2 13 15'
  17 trap 'rm -f $in $out; trap 0; exit $ecode' $trapsigs
  18
  19 CPP="${1-cc -E}"
  20
  21 # The trap here to make up for a bug in bash (1.14.3(1)) that calls the trap
  22 (trap $trapsigs;
  23  echo '#include "sh.h"';
  24  echo ' { QwErTy SIGNALS , "DUMMY" , "hook for number of signals" },';
  25  ${SED} -e '/^[  ]*#/d' -e 's/^[         ]*\([^         ][^     ]*\)[    ][      ]*\(.*[^       ]\)[    ]*$/#ifdef SIG\1\
  26         { QwErTy .signal = SIG\1 , .name = "\1", .mess = "\2" },\
  27 #endif/') > $in
  28 $CPP $in  > $out
  29 ${SED} -n 's/{ QwErTy/{/p' < $out | ${AWK} '{print NR, $0}' | sort -k5n -k1n |
  30     ${SED} 's/^[0-9]* //' |
  31     ${AWK} 'BEGIN { last=0; nsigs=0; }
  32         {
  33             if ($4 ~ /^[0-9][0-9]*$/ && $5 == ",") {
  34                 n = $4;
  35                 if (n > 0 && n != last) {
  36                     while (++last < n) {
  37                         printf "\t{ .signal = %d , .name = NULL, .mess = `Signal %d` } ,\n", last, last;
  38                     }
  39                     print;
  40                 }
  41             }
  42         }' |
  43     tr '`' '"' | grep -v '"DUMMY"'
  44 ecode=0