#!/usr/bin/env perl
#
# Copyright (C) 2013 Free Software Foundation, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

use warnings;
use strict;

my @lines = <>;
my @protos = map { /^(sub \w+\s*\(.*\))/ ? ("$1;") : () } @lines;

while (defined ($_ = shift @lines))
  {
    if (/^#!.* prototypes/i)
      {
        print "# BEGIN AUTOMATICALLY GENERATED PROTOTYPES\n";
        print join ("\n", sort @protos) . "\n";
        print "# END AUTOMATICALLY GENERATED PROTOTYPES\n";
      }
    else
      {
        print;
      }
  }