# The LearningOnline Network with CAPA
# definition of tags that give a structure to a document
#
# $Id: structuretags.pm,v 1.119 2002/09/30 15:10:11 sakharuk Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA 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 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA 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 LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
# 2/19 Guy
# 6/26/2001 fixed extra web display at end of tags
# 8/17,8/18,8/20 Gerd Kortemeyer
package Apache::structuretags;
use strict;
use Apache::lonnet;
use Apache::File();
BEGIN {
&Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));
# &Apache::lonxml::register_insert('problem','',('part','postanswerdate','preduedate'))
}
sub start_web {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]);
if ($target eq 'web') {
return $bodytext;
}
return '';
}
sub end_web {
return '';
}
sub start_tex {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]);
if ($target eq 'tex') {
return $bodytext.' ';
}
return '';
}
sub end_tex {
return '';
}
sub page_start {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my %found;
foreach my $taginside ($tagstack) {
foreach my $taglookedfor ('html','body','form') {
if ($taginside =~ /^$taglookedfor$/i) { $found{$taglookedfor} = 1; }
}
}
my $result;
my $head_tag_start;
if (!defined($found{'html'})) {
$result=&Apache::londefdef::start_html($target,$token,$tagstack,$parstack,
$parser,$safeeval);
$head_tag_start='
'.&Apache::lonxml::registerurl(undef,$target);
}
my $body_tag_start;
if (!defined($found{'body'})) {
$body_tag_start='';
}
my $form_tag_start;
if (!defined($found{'form'})) {
$form_tag_start='