Avoid a possible race condition where a parallel make might

[p5sagit/p5-mst-13.2.git] / keywords.pl

#!/usr/bin/perl -w
# 
# Regenerate (overwriting only if changed):
#
#    keywords.h
#
# from information stored in the DATA section of this file.
#
# Accepts the standard regen_lib -q and -v args.
#
# This script is normally invoked from regen.pl.

use strict;

require 'regen_lib.pl';

my $kw = safer_open("keywords.h-new");
select $kw;

print <<EOM;
/* -*- buffer-read-only: t -*-
 *
 *    keywords.h
 *
 *    Copyright (C) 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2005,
 *    2006, 2007, by Larry Wall and others
 *
 *    You may distribute under the terms of either the GNU General Public
 *    License or the Artistic License, as specified in the README file.
 *
 * !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
 *  This file is built by keywords.pl from its data.  Any changes made here
 *  will be lost!
 */
EOM

# Read & print data.

my $keynum = 0;
while (<DATA>) {
    chop;
    next unless $_;
    next if /^#/;
    my ($keyword) = split;
    print &tab(5, "#define KEY_$keyword"), $keynum++, "\n";
}

print $kw "\n/* ex: set ro: */\n";

safer_close($kw);

rename_if_different("keywords.h-new", "keywords.h");

###########################################################################
sub tab {
    my ($l, $t) = @_;
    $t .= "\t" x ($l - (length($t) + 1) / 8);
    $t;
}
###########################################################################
__END__

NULL
__FILE__
__LINE__
__PACKAGE__
__DATA__
__END__
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