lib/gen_m4.awk

   1 #!/usr/bin/awk -f
   2 #
   3 #                            COPYRIGHT
   4 #
   5 #   PCB, interactive printed circuit board design
   6 #   Copyright (C) 2003 Dan McMahill
   7 #
   8 #   This program is free software; you can redistribute it and/or modify
   9 #   it under the terms of the GNU General Public License as published by
  10 #   the Free Software Foundation; either version 2 of the License, or
  11 #   (at your option) any later version.
  12 #
  13 #   This program is distributed in the hope that it will be useful,
  14 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 #   GNU General Public License for more details.
  17 #
  18 #   You should have received a copy of the GNU General Public License
  19 #   along with this program; if not, write to the Free Software
  20 #   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 #
  22 # Script to regenerate *.m4 from *.inc
  23 #
  24 # Usage:
  25 #
  26 #  awk -f gen_m4.awk name=foo foo.inc > foo.m4
  27 #
  28
  29 BEGIN {
  30         printf("divert(-1)\n");
  31         printf("#\n");
  32         printf("# NOTE: Auto-generated. Do not change.\n");
  33         printf("#");
  34         do_process = 0;
  35 }
  36
  37 /^\#[ \t]*EXTRACT_BEGIN/ {
  38   do_process = 1;
  39 }
  40
  41 /^\#[ \t]*EXTRACT_END/ {
  42   do_process = 0;
  43 }
  44
  45 do_process == 0 {
  46   next;
  47 }
  48
  49 /^\#\#/ {
  50         descr = $0;
  51         ind = index(descr, $2);
  52         descr = substr(descr, ind);
  53         printf("#\n");
  54         next;
  55 }
  56
  57
  58 /^[ \t]*define/ {
  59         pkg = $1;
  60         ind = index(pkg, "PKG");
  61         pkg = substr(pkg, ind+4);
  62         ind = index(pkg, "'");
  63         pkg = substr(pkg, 1, ind-1);
  64         printf("define(`Description_%s_%s',\t``%s'')\n", name, pkg, descr);
  65 }
  66
  67 END {
  68         printf("divert(0)dnl\n");
  69 }
  70