#!/usr/local/bin/perl5

# This is a very simple Perl script to expand server-side includes
# in the directory it is run, and direct subdirectories. It will
# work only on SSI directives of the form
#
# <!--#include virtual="filename" -->
#
# Filename must be relative to the directory the file appears in.
#
# Nov 30, 1996 - Alexei Kosut <akosut@apache.org>

# ====================================================================
# Copyright (c) 1996-1999 The Apache Group.  All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer. 
#
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
#
# 3. All advertising materials mentioning features or use of this
#    software must display the following acknowledgment:
#    "This product includes software developed by the Apache Group
#    for use in the Apache HTTP server project (http://www.apache.org/)."
#
# 4. The names "Apache Server" and "Apache Group" must not be used to
#    endorse or promote products derived from this software without
#    prior written permission.
#
# 5. Products derived from this software may not be called "Apache"
#    nor may "Apache" appear in their names without prior written
#    permission of the Apache Group.
#
# 6. Redistributions of any form whatsoever must retain the following
#    acknowledgment:
#    "This product includes software developed by the Apache Group
#    for use in the Apache HTTP server project (http://www.apache.org/)."
#
# THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
# EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE APACHE GROUP OR
# ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
# OF THE POSSIBILITY OF SUCH DAMAGE.
# ====================================================================
#
# This software consists of voluntary contributions made by many
# individuals on behalf of the Apache Group and was originally based
# on public domain software written at the National Center for
# Supercomputing Applications, University of Illinois, Urbana-Champaign.
# For more information on the Apache Group and the Apache HTTP server
# project, please see <http://www.apache.org/>.

# Put a list of dirs (except ..) into @dirs

opendir DIR, "." or die "Could not open directory: $!";
@dirs = grep !/^\.\.$/, (grep -d, readdir DIR);
closedir DIR;

foreach $dir (@dirs) {
    print "Entering directory $dir\n";
    opendir SUBDIR, "$dir" or die "Could not open subdir $dir: $!";
    foreach $file (grep /\.html$/, readdir SUBDIR) {
	print "Expanding file $dir/$file\n";
	rename "$dir/$file", "$dir/${file}.old";
	open READ, "$dir/${file}.old" or die "Couldn't read $dir/$file: $!";
	open WRITE, ">$dir/$file" or die "Couldn't write $dir/$file: $!";
	while ($r = <READ>) {
	    if ($r =~ /<!--#include virtual="(.*)" -->/) {
		($pre, $include, $post) = ($`, $1, $');
		print WRITE $pre;

		open INC, "$dir/$include" or
		    print "Could not include file $dir/$include: $!";
		print WRITE while (<INC>);
		close INC;

		print WRITE $post;
	    }
	    else {
		print WRITE $r;
	    }
	}
	close READ;
	close WRITE;
	unlink "$dir/$file.old";
    }
    closedir SUBDIR;
}