#! /usr/local/bin/perl -wi~
#
# This script will stamp a copyright notice on each file listed on the
# command line.  It will overwrite the file with the newly stamped version,
# leaving a copy of the original contents in a backup file.  Files without
# both a pre-existing notice and RCS tag will *not* be tagged.
#
# $Id: copywrite,v 1.4 1998/10/28 15:16:28 garland Exp $
#

$notice =
'Copyright (C) 1998 Michael Garland.  See "COPYING.txt" for details.';

$stamped = "";

while(<>)
{
    if( /^(.*)Copyright/ )
    {
	$leader = $1;
	# replace existing notice, if appropriate
	if( /Michael Garland/ )
	{
	    print STDERR "$ARGV\n";
	    print "$leader$notice\n";
	}
	else
	{
	    print;
	}
	$stamped = $ARGV;
    }
    elsif( $stamped ne $ARGV && /^(.*)\$Id/ )
    {
	# place notice just before RCS revision tag
	print STDERR "$ARGV\n";
	print "$1$notice\n";
	print "$1\n";
	print;
	$stamped = $ARGV;
    }
    else
    {
	print;
    }
}