loncom/xml/londefdef.pm - diff

Return to londefdef.pm CVS log

Up to [LON-CAPA] / loncom / xml

Diff for /loncom/xml/londefdef.pm between versions 1.348 and 1.475

version 1.348, 2006/12/19 22:30:52	version 1.475, 2024/04/14 17:12:28
Line 1	Line 1
# The LearningOnline Network with CAPA	# The LearningOnline Network with CAPA
# Tags Default Definition Module	# Tags Default Definition Module
#	#
# $Id$	# $Id$
#	#
#	#
# Copyright Michigan State University Board of Trustees	# Copyright Michigan State University Board of Trustees
#	#
Line 25	Line 25
# /home/httpd/html/adm/gpl.txt	# /home/httpd/html/adm/gpl.txt
#	#
# http://www.lon-capa.org/	# http://www.lon-capa.org/
## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.	## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
# TtHfunc and TtMfunc (the "Code") may be compiled and linked into	# TtHfunc and TtMfunc (the "Code") may be compiled and linked into
# binary executable programs or libraries distributed by the	# binary executable programs or libraries distributed by the
# Michigan State University (the "Licensee"), but any binaries so	# Michigan State University (the "Licensee"), but any binaries so
# distributed are hereby licensed only for use in the context	# distributed are hereby licensed only for use in the context
# of a program or computational system for which the Licensee is the	# of a program or computational system for which the Licensee is the
# primary author or distributor, and which performs substantial	# primary author or distributor, and which performs substantial
# additional tasks beyond the translation of (La)TeX into HTML.	# additional tasks beyond the translation of (La)TeX into HTML.
# The C source of the Code may not be distributed by the Licensee	# The C source of the Code may not be distributed by the Licensee
# to any other parties under any circumstances.	# to any other parties under any circumstances.
#	#

package Apache::londefdef;	package Apache::londefdef;

use Apache::lonnet;	use Apache::lonnet;
use strict;	use strict;
use Apache::lonxml;	use Apache::lonxml;
use Apache::File();	use Apache::lontable;
use Image::Magick;	use Image::Magick;
use Apache::lonmenu();	use Apache::lonmenu();
use Apache::lonmeta();	use Apache::lonmeta();
	use Apache::lonlocal;
	use Apache::loncommon();
use Apache::Constants qw(:common);	use Apache::Constants qw(:common);
use File::Basename;	use File::Basename;
use LONCAPA();	use LONCAPA;
# use Data::Dumper;	# use Data::Dumper;

BEGIN {	BEGIN {

&Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));	&Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','style','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));

}	}

#
# Dumps all elements of the table structure.
# Need this 'cause evidently when given an array, Data::Dumper only seems
# to dump element 0.
#
#sub debug_dump_table {
# my $lastrow = $#Apache::londefdef::table;
# &Apache::lonnet::logthis("Dumping table: Last row index: $lastrow");
# my $row;
# for ($row =0; $row <= $lastrow; $row++ ) {
# my $text = Dumper($Apache::londefdef::table[$row]);
# &Apache::lonnet::logthis("table [ $row ]".$text);
# }
#}
sub initialize_londefdef {	sub initialize_londefdef {
$Apache::londefdef::TD_redirection=0;	$Apache::londefdef::TD_redirection=0;
@Apache::londefdef::table = ();	@Apache::londefdef::table = ();
Line 103 sub start_m {	Line 92 sub start_m {
my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);	my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
if ($target eq 'web' \|\| $target eq 'analyze') {	if ($target eq 'web' \|\| $target eq 'analyze') {
&Apache::lonxml::debug("M is starting with:$inside:");	&Apache::lonxml::debug("M is starting with:$inside:");
	if (!($inside =~ /^\s\$.\$\s$/ \|\| $inside =~ /^\s\\[([].\\[)\]]\s$/)) {
	# Non-math LaTeX will not be rendered correctly with MathJax
	# and it should be avoided anyway.
	# On top of that, MathJax will render math without $, but
	# it will fail with tth. This is worth a warning.
	# (even though some people might just use latex for printing)
	&Apache::lonxml::warning(&mt('Missing $ in [_1].','<m>'));
	} elsif (($env{'browser.type'} eq 'safari') && ($env{'form.editxmltext'}) &&
	(($env{'form.problemmode'} eq 'view') \|\| ($env{'form.problemmode'} eq 'discard'))) {
	my $delimiter;
	if ($inside =~ /\$$/) {
	$delimiter = '$';
	} elsif ($inside =~ /\\([)\]])$/) {
	$delimiter = $1;
	}
	if ($delimiter) {
	&Apache::lonxml::warning(&mt('Insert a space between [_1] and [_2].',
	$delimiter,'</m>'));
	}
	}
my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);	my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
if ($eval eq 'on') {	if ($eval eq 'on') {
$inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);	$inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
#&Apache::lonxml::debug("M is evaulated to:$inside:");	#&Apache::lonxml::debug("M is evaluated to:$inside:");
}	}
my $tex = $inside;	my $tex = $inside;
my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
$currentstring = &Apache::lontexconvert::converted(\$inside,$display);	$currentstring = &Apache::lontexconvert::converted(\$inside,$display);
if ($Apache::lontexconvert::errorstring) {	if ($Apache::lontexconvert::errorstring) {
my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occured while attempting to convert this TeX: <pre>';	my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
$tex = &HTML::Entities::encode($tex,'<>&"');	$tex = &HTML::Entities::encode($tex,'<>&"');
my ($linenumber) =	my ($linenumber) =
($Apache::lontexconvert::errorstring =~ /Line (\d+)/);	($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
Line 128 sub start_m {	Line 137 sub start_m {
#&Apache::lonxml::debug("M is ends with:$currentstring:");	#&Apache::lonxml::debug("M is ends with:$currentstring:");
$Apache::lonxml::post_evaluate=0;	$Apache::lonxml::post_evaluate=0;
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {

$currentstring = $inside;	$currentstring = $inside;
my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);	my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
if ($eval eq 'on') {	if ($eval eq 'on') {
Line 135 sub start_m {	Line 145 sub start_m {
}	}
if ($currentstring=~/^(\s\\\\\s)*$/) {$currentstring = ' \vskip 0 mm ';}	if ($currentstring=~/^(\s\\\\\s)*$/) {$currentstring = ' \vskip 0 mm ';}
# detect simple math mode entry exits, and convert them	# detect simple math mode entry exits, and convert them
# to use \ensuremath	# to use \ensuremath ... unless there's a \verb inside.
if ($currentstring=~/^\s\$[^\$].[^\$]\$\s*$/) {	if (! ($currentstring=~/\\verb/)) {
$currentstring=~s/^(\s*)\$/$1/;	if ($currentstring=~/^\s\$[^\$].\$\s*$/) {
$currentstring=~s/\$(\s*)$/$1/;	$currentstring=~s/^(\s*)\$/$1/;
$currentstring='\ensuremath{'.$currentstring.'}';	$currentstring=~s/\$(\s*)$/$1/;
	$currentstring='\ensuremath{'.$currentstring.'}';
	}
}	}
$Apache::lonxml::post_evaluate=0;	$Apache::lonxml::post_evaluate=0;
}	}
Line 182 sub start_html {	Line 194 sub start_html {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'edit' \|\| $target eq 'webgrade' ) {	if ($target eq 'web' \|\| $target eq 'edit' \|\| $target eq 'webgrade' ) {
# start_body() takes care of emitting the <html>	# start_body() takes care of emitting the <html>
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .=
'\documentclass[letterpaper,twoside]{article}\raggedbottom';	$currentstring .= &latex_header();
if (($env{'form.latex_type'}=~'batchmode') \|\|
(!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
$currentstring .= '\newcommand{\keephidden}[1]{}'.
'\renewcommand{\deg}{$^{\circ}$}'.
'\usepackage{multirow}'.
'\usepackage{longtable}'.
'\usepackage{textcomp}'.
'\usepackage{makeidx}'.
'\usepackage[dvips]{graphicx}'.
'\usepackage{wrapfig}'.
'\usepackage{picins}'.
'\usepackage{epsfig}'.
'\usepackage{calc}'.
'\usepackage{amsmath}'.
'\usepackage{amssymb}'.
'\usepackage{amsfonts}'.
'\usepackage{amsthm}'.
'\usepackage{amscd}'.
'\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
'\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
}	}
return $currentstring;	return $currentstring;
}	}
Line 225 sub start_head {	Line 217 sub start_head {
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
}	}
return $currentstring;	return $currentstring;
}	}

Line 238 sub end_head {	Line 230 sub end_head {
if ($Apache::lonxml::redirection) {	if ($Apache::lonxml::redirection) {
$Apache::londefdef::head = &Apache::lonxml::endredirection();	$Apache::londefdef::head = &Apache::lonxml::endredirection();
}	}
}	}
return $currentstring;	return $currentstring;
}	}

Line 247 sub start_map {	Line 239 sub start_map {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 256 sub end_map {	Line 248 sub end_map {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 266 sub start_select {	Line 258 sub start_select {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$Apache::londefdef::select=0;	$Apache::londefdef::select=0;
}	}
Line 277 sub end_select {	Line 269 sub end_select {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 287 sub start_option {	Line 279 sub start_option {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$Apache::londefdef::select++;	$Apache::londefdef::select++;
if ($Apache::londefdef::select == 1) {	if ($Apache::londefdef::select == 1) {
Line 303 sub end_option {	Line 295 sub end_option {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring='}';	$currentstring='}';
}	}
Line 315 sub start_input {	Line 307 sub start_input {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 324 sub end_input {	Line 316 sub end_input {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 334 sub start_textarea {	Line 326 sub start_textarea {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 343 sub end_textarea {	Line 335 sub end_textarea {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 353 sub start_form {	Line 345 sub start_form {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 362 sub end_form {	Line 354 sub end_form {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 372 sub start_title {	Line 364 sub start_title {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$Apache::londefdef::title =	$Apache::londefdef::title =
&Apache::lonxml::get_all_text('/title',$parser,$style);	&Apache::lonxml::get_all_text('/title',$parser,$style);
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\keephidden{Title of the document: '	$currentstring .= '\keephidden{Title of the document: ';
}	}
if ($target eq 'meta') {	if ($target eq 'meta') {
$currentstring='<title>';	$currentstring='<title>';
Line 391 sub end_title {	Line 383 sub end_title {
# start_title takes care of swallowing the title	# start_title takes care of swallowing the title
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
}	}
if ($target eq 'meta') {	if ($target eq 'meta') {
&end_output($target);	&end_output($target);
$currentstring='</title>';	$currentstring='</title>';
}	}
return $currentstring;	return $currentstring;
}	}

Line 411 sub start_meta {	Line 403 sub start_meta {
} else {	} else {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
	if ($env{'form.grade_imsexport'}) {
	$currentstring = '';
	}
} elsif ($target eq 'meta') {	} elsif ($target eq 'meta') {
unless (&Apache::lonxml::get_param	unless (&Apache::lonxml::get_param
('http-equiv',$parstack,$safeeval,undef,1)) {	('http-equiv',$parstack,$safeeval,undef,1)) {
Line 445 sub start_meta {	Line 440 sub start_meta {
if ((not defined $content) && (not defined $name)) {	if ((not defined $content) && (not defined $name)) {
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
}	}
	} elsif ($target eq 'edit') {
	$currentstring .= &Apache::edit::tag_start($target,$token);
	$currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
	$currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
	$currentstring .= &Apache::edit::end_row();
	} elsif ($target eq 'modified') {
	my $constructtag =
	&Apache::edit::get_new_args($token,$parstack,$safeeval,
	'name','content');
	if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
}	}
return $currentstring;	return $currentstring;
}	}
Line 468 sub end_meta {	Line 473 sub end_meta {
return $currentstring;	return $currentstring;
}	}

	sub insert_meta {
	return '
	<meta />';
	}

	#-- <start> tag
	sub start_style {
	my ($target, $token, $tagstack, $parstack, $parser, $safeeval, $style) = @_;
	my $currentstring = '';

	if ($target eq 'tex') {
	Apache::lonxml::startredirection();
	} else {
	$currentstring = $token->[4];
	}

	return $currentstring;
	}

	sub end_style {
	my ($target, $token, $tagstack, $parstack, $parser, $safeeval) = @_;
	my $currentstring = '';

	if ($target eq 'tex') {
	Apache::lonxml::endredirection();
	} else {
	$currentstring = $token->[2];
	}
	return $currentstring;
	}

# accessrule	# accessrule
sub start_accessrule {	sub start_accessrule {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
my $currentstring = '';	my $currentstring = '';
my $eff=&Apache::lonxml::get_param	my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
('effect',$parstack,$safeeval,undef,1);	my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
my $realm=&Apache::lonxml::get_param	my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
('realm',$parstack,$safeeval,undef,1);	my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
my $role=&Apache::lonxml::get_param
('role',$parstack,$safeeval,undef,1);	my ($dom,$crs,$sec,$separator);
$realm=~s/\s+//g;	if ($type eq 'user') {
$realm=~s/\//\_/g;	($dom,$crs,$sec)=split(m{/},$realm);
$realm=~s/^\_//;	$crs = &LONCAPA::clean_username($crs);
$realm=~s/\W/\;/g;	$separator = '/';
$role=~s/\s+//g;	} else {
$role=~s/\//\_/g;	($dom,$crs,$sec)=split(/\_/,$realm);
$role=~s/\W/\;/g;	$crs = &LONCAPA::clean_courseid($crs);
	$separator = '_';
	}
	$dom = &LONCAPA::clean_domain($dom);

	$sec =~s/\W//;
	$realm = $dom;
	if ($crs =~ /\S/) { $realm .= $separator.$crs; }
	if ($sec =~ /\S/) { $realm .= $separator.$sec; }
	$role=~s/\W//g;

if ($target eq 'web') {	if ($target eq 'web') {
my $args='';	my $args='';
if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }	if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
Line 495 sub start_accessrule {	Line 541 sub start_accessrule {
}	}
}	}
if ($target eq 'meta') {	if ($target eq 'meta') {
$currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';	$currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
}	}
return $currentstring;	return $currentstring;
}	}
Line 509 sub end_accessrule {	Line 555 sub end_accessrule {
if ($args ne '') {	if ($args ne '') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
}	}
return $currentstring;	return $currentstring;
}	}

	sub generate_css_links {
	my $links;
	my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
	if ($css_href =~ /\S/) {
	&Apache::lonxml::extlink($css_href);
	$links .=
	'<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
	}
	return $links;
	}

#-- <body> tag (end tag required)	#-- <body> tag (end tag required)
sub start_body {	sub start_body {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
Line 527 sub start_body {	Line 584 sub start_body {
if (&is_inside_of($tagstack, "head")) {	if (&is_inside_of($tagstack, "head")) {
&end_head(@_);	&end_head(@_);
}	}
$currentstring =
&Apache::loncommon::start_page($Apache::londefdef::title,	my $extra_head = &generate_css_links();
$Apache::londefdef::head,
{'add_entries' => $token->[2],
'no_title' => 1,
'force_register' => 1});

if ($env{'request.state'} ne 'published') {	# Breadcrumbs
$currentstring.=&Apache::lonmenu::constspaceform();	&Apache::lonhtmlcommon::clear_breadcrumbs();
$currentstring.=(<<EDITBUTTON);	if ($env{'request.state'} eq 'construct') {
<form method="post">	my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
<input type="submit" name="editmode" accesskey="e" value="Edit" />	my $text = 'Authoring Space';
</form>	my $href = &Apache::loncommon::authorspace($url);
<br />	if ($env{'request.course.id'}) {
EDITBUTTON	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
}	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
$currentstring.=&Apache::lonxml::message_location();	if ($href eq "/priv/$cdom/$cnum/") {
	$text = 'Course Authoring Space';
	}
	}
	&Apache::lonhtmlcommon::add_breadcrumb({
	'text' => $text,
	'href' => $href,
	});
	&Apache::lonhtmlcommon::add_breadcrumb({
	'text' => 'HTML Editor',
	'href' => '',
	});
	# breadcrumbs (and tools) will be created
	# in start_page->bodytag->innerregister
	} else {
	# FIXME Where are we?
	}

	my $args = {'add_entries' => $token->[2],
	'force_register' => 1,};
	if ($target eq 'web') {
	$args->{'print_suppress'} = 1;
	if ($env{'request.use_absolute'}) {
	$args->{'use_absolute'} = $env{'request.use_absolute'};
	}
	if ($env{'form.only_body'}) {
	$args->{'only_body'} = 1;
	}
	}
	$currentstring =
	&Apache::loncommon::start_page($Apache::londefdef::title,
	$Apache::londefdef::head
	.$extra_head,$args);
	my $header = '';
	if ($env{'request.state'} ne 'published' &&
	$env{'request.state'} ne 'construct') {
	$header=&Apache::lonmenu::constspaceform();
	}
	if ($env{'request.state'} ne 'published') {
	unless ($env{'form.inhibitmenu'} eq 'yes') {
	$header.=&edit_controls();
	}
	}
	if ($env{'request.state'} eq 'construct') {
	unless ($env{'form.inhibitmenu'} eq 'yes') {
	$currentstring.=&Apache::loncommon::head_subbox(
	&Apache::loncommon::CSTR_pageheader()
	.$header);
	}
	} elsif ($env{'request.state'} eq 'edit') {
	$currentstring.=&Apache::loncommon::head_subbox($header);
	}
	$currentstring.=&Apache::lonxml::message_location();
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\begin{document}';	$currentstring = ''; # '\begin{document}' is in header.
}	}

return $currentstring;	return $currentstring;
}	}

	sub edit_controls {
	my ($nochgview) = @_;
	my ($is_course_doc,$is_supp,$supp_path,$supp_title);
	my $result = '
	<form method="post" action="">
	<div class="LC_edit_problem_header">'."\n";
	unless ($nochgview) {
	$result .= '
	<div class="LC_edit_problem_header_row1">'.
	&Apache::lonxml::renderingoptions().'
	<input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
	</div>';
	}
	$result .= '
	<div>
	<input type="hidden" name="editmode" value="" />
	<input type="button" name="editordefault" accesskey="e" value="'.&mt('Edit').
	'" onclick="seteditmode(this.form,'."'edit'".');" />'."\n";
	if ($env{'browser.type'} ne 'explorer' \|\| $env{'browser.version'} > 9) {
	my $uri = $env{'request.uri'};
	if ($uri =~ /\.(xml\|html\|htm\|xhtml\|xhtm)$/) {
	my %editors = &Apache::loncommon::permitted_editors($uri);
	if ($editors{'daxe'}) {
	my $daxeurl = '/daxepage'.$uri;
	$result .= '<input type="button" name="editordaxe" value="'.&mt('Edit with Daxe').
	'" onclick="seteditmode(this.form,'."'daxe'".');" />'."\n";
	}
	}
	}
	if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
	my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
	if ($url =~ /\.html?$/i) {
	my ($cdom,$cnum);
	if ($env{'request.course.id'}) {
	$cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
	$cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
	if ($url =~ m{^\Q/uploaded/$cdom/$cnum/\E(supplemental\|docs)/}) {
	if ($1 eq 'supplemental') {
	$is_supp = 1;
	}
	$is_course_doc = 1;
	}
	if ($env{'request.filename'} =~ m{/userfiles/supplemental/default\|\d+/}) {
	my $fn=&Apache::lonnet::declutter($env{'request.filename'});
	if (&Apache::lonnet::is_course_upload($fn,$cnum,$cdom)) {
	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
	['folderpath','title']);
	$supp_path = &escape(&HTML::Entities::decode($Apache::lonnet::env{'form.folderpath'}));
	$supp_title = &escape(&HTML::Entities::decode($Apache::lonnet::env{'form.title'}));
	}
	}
	}
	my ($symb,$itemtitle,$displayfile,$caller);
	if ($url =~ m{^/uploaded/$cdom/$cnum/portfolio/syllabus/}) {
	$itemtitle = &mt('Syllabus');
	$caller = "/public/$cdom/$cnum/syllabus";
	} else {
	$caller = $url;
	($symb,$itemtitle,$displayfile) =
	&Apache::lonxml::get_courseupload_hierarchy($url,
	$env{'form.folderpath'},
	$env{'form.title'});
	}
	if (($symb ne '') \|\| ($env{'httpref.'.$url} ne '') \|\|
	($url =~ m{^/uploaded/$cdom/$cnum/portfolio/syllabus/})) {
	$result .= (' ' x 3).
	&Apache::lonhtmlcommon::dependencies_button()."\n".
	&Apache::lonhtmlcommon::dependencycheck_js($symb,
	$itemtitle,$url,$env{'form.folderpath'},$caller)."\n";
	}
	}
	}
	$result .= '</div>
	</div>
	</form>
	';
	my $setedit_js = &Apache::lonxml::seteditor_javascript($is_course_doc,$is_supp,
	$supp_path,$supp_title);
	return $setedit_js."\n".$result;
	}

sub end_body {	sub end_body {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p(); # Close off unclosed <p>	my $currentstring = &end_p(); # Close off unclosed <p>
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= &Apache::loncommon::end_page({'discussion' => 1});	$currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';	$currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
}	}
return $currentstring;	return $currentstring;
}	}

# \begin{center} causes a new paragprah spacing that looks odd inside	# \begin{center} causes a new paragprah spacing that looks odd inside
# of a table cell. Same at the end of a \center but with a slightly	# of a table cell. Same at the end of a \center but with a slightly
# larger space .. hence center_correction and center_end_correction.	# larger space .. hence center_correction and center_end_correction.
#	#
sub center_correction { return '\vspace*{-6 mm}'; }	sub center_correction { return '\vspace*{-6 mm}'; }
sub center_end_correction { return '\vspace*{-7 mm}'; }	sub center_end_correction { return '\vspace*{-7 mm}'; }

#-- <center> tag (end tag required)	#-- <center> tag (end tag required)
Line 573 sub start_center {	Line 760 sub start_center {
my ($target,$token,$tagstack) = @_;	my ($target,$token,$tagstack) = @_;
my $currentstring = &end_p(); # Close off any prior para.	my $currentstring = &end_p(); # Close off any prior para.
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
if (&is_inside_of($tagstack, "table")) {	if (&is_inside_of($tagstack, "table")) {
$currentstring .= &center_correction();	$currentstring .= &center_correction();
}	}
$currentstring .= '\begin{center}';	$currentstring .= '\begin{center}';
}	}
return $currentstring;	return $currentstring;
}	}
Line 587 sub end_center {	Line 774 sub end_center {
my ($target,$token,$tagstack) = @_;	my ($target,$token,$tagstack) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\end{center}';	$currentstring = '\end{center}';
if (&is_inside_of($tagstack, "table")) {	if (&is_inside_of($tagstack, "table")) {
$currentstring .= &center_end_correction();	$currentstring .= &center_end_correction();
}	}
Line 603 sub start_b {	Line 790 sub start_b {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
&disable_para();	&disable_para();
$currentstring .= '\textbf{';	$currentstring .= '\textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

Line 615 sub end_b {	Line 802 sub end_b {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
&enable_para();	&enable_para();
$currentstring = '}';	$currentstring = '}';
}	}
return $currentstring;	return $currentstring;
}	}

Line 629 sub start_strong {	Line 816 sub start_strong {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
&disable_para();	&disable_para();
$currentstring = '\textbf{';	$currentstring = '\textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

Line 641 sub end_strong {	Line 828 sub end_strong {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
&enable_para();	&enable_para();
$currentstring = '}';	$currentstring = '}';
}	}
return $currentstring;	return $currentstring;
}	}
Line 667 sub start_h1 {	Line 854 sub start_h1 {
}	}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}	if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';	$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
} elsif ($target eq 'meta') {	} elsif ($target eq 'meta') {
$currentstring.='<subject>';	$currentstring.='<subject>';
&start_output($target);	&start_output($target);
Line 682 sub end_h1 {	Line 869 sub end_h1 {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';	my $post='\vskip 0 mm ';
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);	my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
if ($align eq 'center') {	if ($align eq 'center') {
$post='\end{center}';	$post='\end{center}';
} elsif ($align eq 'left') {	} elsif ($align eq 'left') {
Line 694 sub end_h1 {	Line 881 sub end_h1 {
} elsif ($target eq 'meta') {	} elsif ($target eq 'meta') {
&end_output($target);	&end_output($target);
$currentstring='</subject>';	$currentstring='</subject>';
}	}
return $currentstring;	return $currentstring;
}	}

Line 716 sub start_h2 {	Line 903 sub start_h2 {
}	}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}	if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';	$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

Line 737 sub end_h2 {	Line 924 sub end_h2 {
$post='}'.'\vskip 0 mm ';	$post='}'.'\vskip 0 mm ';
}	}
$currentstring .= '}}'.$post;	$currentstring .= '}}'.$post;
}	}
return $currentstring;	return $currentstring;
}	}

Line 759 sub start_h3 {	Line 946 sub start_h3 {
}	}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}	if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';	$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

Line 780 sub end_h3 {	Line 967 sub end_h3 {
$post='}'.'\vskip 0 mm ';	$post='}'.'\vskip 0 mm ';
}	}
$currentstring .= '}}'.$post;	$currentstring .= '}}'.$post;
}	}
return $currentstring;	return $currentstring;
}	}

Line 802 sub start_h4 {	Line 989 sub start_h4 {
}	}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}	if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';	$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

Line 823 sub end_h4 {	Line 1010 sub end_h4 {
$post='}'.'\vskip 0 mm ';	$post='}'.'\vskip 0 mm ';
}	}
$currentstring .= '}}'.$post;	$currentstring .= '}}'.$post;
}	}
return $currentstring;	return $currentstring;
}	}

Line 845 sub start_h5 {	Line 1032 sub start_h5 {
}	}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}	if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';	$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

Line 866 sub end_h5 {	Line 1053 sub end_h5 {
$post='}'.'\vskip 0 mm ';	$post='}'.'\vskip 0 mm ';
}	}
$currentstring .= '}}'.$post;	$currentstring .= '}}'.$post;
}	}
return $currentstring;	return $currentstring;
}	}

Line 888 sub start_h6 {	Line 1075 sub start_h6 {
}	}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}	if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';	$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

Line 909 sub end_h6 {	Line 1096 sub end_h6 {
$post='}'.'\vskip 0 mm ';	$post='}'.'\vskip 0 mm ';
}	}
$currentstring .= '}}'.$post;	$currentstring .= '}}'.$post;
}	}
return $currentstring;	return $currentstring;
}	}

Line 955 sub end_i {	Line 1142 sub end_i {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
}	}
return $currentstring;	return $currentstring;
}	}

Line 990 sub start_dfn {	Line 1177 sub start_dfn {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\textit{';	$currentstring .= '\textit{';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1059 sub start_code {	Line 1246 sub start_code {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\texttt{';	$currentstring .= '\texttt{';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1070 sub end_code {	Line 1257 sub end_code {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1093 sub end_em {	Line 1280 sub end_em {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1116 sub end_q {	Line 1303 sub end_q {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1132 sub end_q {	Line 1319 sub end_q {
my $closing_string = ''; # String required to close <p>	my $closing_string = ''; # String required to close <p>

# Some tags are <p> fragile meaning that <p> inside of them	# Some tags are <p> fragile meaning that <p> inside of them
# does not work within TeX mode. This is managed via the	# does not work within TeX mode. This is managed via the
# counter below:	# counter below:
#	#

Line 1161 sub start_p {	Line 1348 sub start_p {

$currentstring .= &end_p(); # close off prior para if in progress.	$currentstring .= &end_p(); # close off prior para if in progress.
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (!defined $align) {
	# check inline CSS
	$align = &get_css_property('text-align',$parstack,$safeeval);
	}
if ($align eq 'center') {	if ($align eq 'center') {
$currentstring .='\begin{center}\par ';	$currentstring .='\begin{center}\par ';
$closing_string = '\end{center}';	$closing_string = '\end{center}';
Line 1168 sub start_p {	Line 1359 sub start_p {
$currentstring = &center_correction().$currentstring;	$currentstring = &center_correction().$currentstring;
}	}
} elsif ($align eq 'right') {	} elsif ($align eq 'right') {
$currentstring.="\n".'{\flushright ';	$currentstring.="\n".'\begin{flushright}';
# $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';	# $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
$closing_string= "}\n";	$closing_string= '\end{flushright}'."\n";
} elsif ($align eq 'left') {	} elsif ($align eq 'left') {
$currentstring.= "\n".'{\flushleft ';	$currentstring.= "\n".'\begin{flushleft}';
# $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';	# $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
$closing_string = "}\n";	$closing_string = '\end{flushleft}'."\n";
} else {	} else {
$currentstring.='\par ';	$currentstring.='\par ';
if (&is_inside_of($tagstack, 'table')) {	if (&is_inside_of($tagstack, 'table')) {
Line 1225 sub start_br {	Line 1416 sub start_br {
$signal = 1;	$signal = 1;
}	}
}	}
if ($signal eq 1) {	if ($signal != 1) {
$currentstring .= ' \vskip 0 mm ';
} elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
$currentstring .= '\strut \\\\ \strut ';	$currentstring .= '\strut \\\\ \strut ';
} else { # Honor break in simple <sup></sup>
$currentstring .= '}} \strut \\\\ \strut \ensuremath{^{';
}	}

}	}
return $currentstring;	return $currentstring;
}	}
Line 1253 sub start_big {	Line 1441 sub start_big {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '{\large ';	$currentstring .= '{\large ';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1296 sub start_basefont {	Line 1484 sub start_basefont {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);	my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
if (defined $basesize) {	if (defined $basesize) {
Line 1310 sub end_basefont {	Line 1498 sub end_basefont {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);	my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
if (defined $basesize) {	if (defined $basesize) {
Line 1326 sub start_font {	Line 1514 sub start_font {
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);	my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
if ($face!~/symbol/i) {	$currentstring = $token->[4];
if (($env{'browser.fontenhance'} eq 'on') \|\|
($env{'browser.blackwhite'} eq 'on')) { return ''; }
}
$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);	my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
if (defined $fontsize) {	if (defined $fontsize) {
Line 1344 sub end_font {	Line 1528 sub end_font {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);	my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
if (defined $fontsize) {	if (defined $fontsize) {
Line 1353 sub end_font {	Line 1537 sub end_font {
}	}
return $currentstring;	return $currentstring;
}	}

#-- <strike> tag (end tag required)	#-- <strike> tag (end tag required)
sub start_strike {	sub start_strike {
my ($target,$token) = @_;	my ($target,$token) = @_;
Line 1362 sub start_strike {	Line 1546 sub start_strike {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
}	}
return $currentstring;	return $currentstring;
}	}

Line 1373 sub end_strike {	Line 1557 sub end_strike {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring=&Apache::lonxml::endredirection();	$currentstring=&Apache::lonxml::endredirection();
$currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;	$currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
$currentstring=~s/^\s*(\S)/\\underline\{$1/;	$currentstring=~s/^\s*(\S)/\\underline\{$1/;
$currentstring=~s/(\S)\s*$/$1\}/;	$currentstring=~s/(\S)\s*$/$1\}/;
}	}
return $currentstring;	return $currentstring;
Line 1388 sub start_s {	Line 1572 sub start_s {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
}	}
return $currentstring;	return $currentstring;
}	}

Line 1413 sub start_sub {	Line 1597 sub start_sub {
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\ensuremath{_{';	$currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1436 sub start_sup {	Line 1620 sub start_sup {
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\ensuremath{^{';	$currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1459 sub start_hr {	Line 1643 sub start_hr {
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {

	# <hr /> can't be inside of <sup><sub> thank you LaTeX.
	#
	my $restart_sub = 0;
	my $restart_sup = 0;

	# Since <sub> and <sup> are simple tags it's ok to turn off/on
	# using the start_ stop_ functions.. those tags only care about
	# $target.

	if (&is_inside_of($tagstack, "sub")) {
	$restart_sub = 1;
	$currentstring .= &end_sub($target, $token, $tagstack,
	$parstack, $parser, $safeeval);
	}
	if (&is_inside_of($tagstack, "sup")) {
	$restart_sup = 1;
	$currentstring .= &end_sup($target, $token, $tagstack,
	$parstack, $parser, $safeeval);
	}

my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);	my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
if (defined $LaTeXwidth) {	if (defined $LaTeXwidth) {
if ($LaTeXwidth=~/^%/) {	if ($LaTeXwidth=~/^%/) {
Line 1479 sub start_hr {	Line 1684 sub start_hr {
}	}
$currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.	$currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
$LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';	$LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
}	# Turn stuff back on that we can't be inside of.

	if ($restart_sub) {
	$currentstring .= &start_sub($target, $token, $tagstack,
	$parstack, $parser, $safeeval);
	}
	if ($restart_sup) {
	$currentstring .= &start_sup($target, $token, $tagstack,
	$parstack, $parser, $safeeval);
	}
	}
return $currentstring;	return $currentstring;
}	}

Line 1506 sub start_div {	Line 1721 sub start_div {
my $currentstring = &end_p(); # Close enclosing para.	my $currentstring = &end_p(); # Close enclosing para.
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
}	}
if ($target eq 'tex') {	if ($target eq 'tex') {
# 4 possible alignments: left, right, center, and -missing-.	# 4 possible alignments: left, right, center, and -missing-.
	# If inside a table row, we must let the table logic
	# do the alignment, however.
	#

my $endstring = '';	my $endstring = '';

Line 1519 sub start_div {	Line 1737 sub start_div {
$endstring = '\end{center}';	$endstring = '\end{center}';
if (&is_inside_of($tagstack, "table")) {	if (&is_inside_of($tagstack, "table")) {
$currentstring = &center_correction().$currentstring;	$currentstring = &center_correction().$currentstring;
	$endstring .= &center_end_correction();
}	}
}	}
elsif ($align eq 'right') {	elsif ($align eq 'right') {
Line 1559 sub start_a {	Line 1778 sub start_a {
my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,	my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
undef,1);	undef,1);
$currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});	$currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
} elsif ($target eq 'tex') {	if ($href =~ /\S/) {
my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);	if ($href !~ m{^https?://}) {
my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);	my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
if ($a=~/\S/) {	my $linkurl;
$a=~s/([^\\])%/$1\\\%/g;	if ($href =~ m{^/uploaded/}) {
$currentstring .= '\ref{URI: '.$a.'}';	$linkurl = $href;
} elsif ($b=~/\S/) {	} elsif ($href =~ m{^[^/]}) {
$currentstring .= '\ref{Anchor: '.$b.'}';	my $path = $url;
} else {	$path =~ s{[^/]*$}{};
$currentstring.='';	$linkurl = $path.$href;
}	}
	if ($linkurl =~ m{^/uploaded/}) {
	if (!&Apache::lonnet::allowed('bre',$linkurl)) {
	if (&Apache::lonnet::is_on_map($url)) {
	&Apache::lonxml::extlink($linkurl);
	} elsif ($env{'request.course.id'}) {
	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
	if ($linkurl =~ m{^([^/]\|/uploaded/$cdom/$cnum/(docs\|supplemental)/)}) {
	my $cleanhref = &clean_docs_httpref($linkurl,$url,$cdom,$cnum);
	if ($cleanhref) {
	&Apache::lonxml::extlink($cleanhref);
	}
	}
	}
	}
	}
	}
	}
}	}
return $currentstring;	return $currentstring;
}	}
Line 1580 sub end_a {	Line 1817 sub end_a {
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
}	}
	if ($target eq 'tex') {
	my $href =
	&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
	my $name =
	&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
	my $uriprint =
	&Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
	my $anchorprint =
	&Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
	if (($href =~ /\S/) && ($uriprint=~/^on\|uriprint\|yes\|1$/i)) {
	$href =~ s/([^\\])%/$1\\\%/g;
	# Substitute special symbols... and allow line breaks at each /
	#
	$href = &Apache::lonxml::latex_special_symbols($href);
	$href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
	$currentstring .= ' ({\tt URI:'.$href.'})';
	} elsif (($name =~ /\S/) && ($anchorprint=~/^on\|anchorprint\|yes\|1$/i)) {
	$currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
	} else {
	$currentstring.='';
	}
	}
return $currentstring;	return $currentstring;
}	}

Line 1588 sub start_li {	Line 1847 sub start_li {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);	my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);	my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
#FIXME need to support types i and I	#FIXME need to support types i and I
if ($type=~/disc/) {	if ($type=~/disc/) {
$currentstring .= ' \item[$\bullet$] ';	$currentstring .= ' \item[$\bullet$] ';
} elsif ($type=~/circle/) {	} elsif ($type=~/circle/) {
Line 1609 sub start_li {	Line 1868 sub start_li {
$currentstring .= ' \item['.$value.'] ';	$currentstring .= ' \item['.$value.'] ';
} else {	} else {
$currentstring .= ' \item ';	$currentstring .= ' \item ';
}	}
$Apache::londefdef::list_index++;	$Apache::londefdef::list_index++;
}	}
return $currentstring;	return $currentstring;
Line 1619 sub end_li {	Line 1878 sub end_li {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = &end_p(); # In case there's a <p> in the <li>	my $currentstring = &end_p(); # In case there's a <p> in the <li>
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 1632 sub start_u {	Line 1891 sub start_u {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
}	}
return $currentstring;	return $currentstring;
}	}

Line 1655 sub start_ul {	Line 1914 sub start_ul {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p(); # Close off enclosing list.	my $currentstring = &end_p(); # Close off enclosing list.
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);	my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
$Apache::londefdef::list_index=0;	$Apache::londefdef::list_index=0;
if ($TeXtype eq 'disc') {	if ($TeXtype eq 'disc') {
$currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.	$currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
'\renewcommand{\labelitemii}{$\bullet$}'.	'\renewcommand{\labelitemii}{$\bullet$}'.
'\renewcommand{\labelitemiii}{$\bullet$}'.	'\renewcommand{\labelitemiii}{$\bullet$}'.
'\renewcommand{\labelitemiv}{$\bullet$}';	'\renewcommand{\labelitemiv}{$\bullet$}';
} elsif ($TeXtype eq 'circle') {	} elsif ($TeXtype eq 'circle') {
$currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.	$currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
'\renewcommand{\labelitemii}{$\circ$}'.	'\renewcommand{\labelitemii}{$\circ$}'.
'\renewcommand{\labelitemiii}{$\circ$}'.	'\renewcommand{\labelitemiii}{$\circ$}'.
'\renewcommand{\labelitemiv}{$\circ$}';	'\renewcommand{\labelitemiv}{$\circ$}';
} elsif ($TeXtype eq 'square') {	} elsif ($TeXtype eq 'square') {
$currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.	$currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
'\renewcommand{\labelitemii}{$\diamond$}'.	'\renewcommand{\labelitemii}{$\diamond$}'.
'\renewcommand{\labelitemiii}{$\diamond$}'.	'\renewcommand{\labelitemiii}{$\diamond$}'.
'\renewcommand{\labelitemiv}{$\diamond$}';	'\renewcommand{\labelitemiv}{$\diamond$}';
}	}
$currentstring .= '\strut \begin{itemize}';	$currentstring .= '\strut \begin{itemize}';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1684 sub end_ul {	Line 1943 sub end_ul {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.	$currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
'\renewcommand{\labelitemii}{$\bullet$}'.	'\renewcommand{\labelitemii}{$\bullet$}'.
'\renewcommand{\labelitemiii}{$\bullet$}'.	'\renewcommand{\labelitemiii}{$\bullet$}'.
'\renewcommand{\labelitemiv}{$\bullet$}\strut ';	'\renewcommand{\labelitemiv}{$\bullet$}\strut ';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1699 sub start_menu {	Line 1958 sub start_menu {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\begin{itemize} ";	$currentstring = " \\begin{itemize} ";
}	}
return $currentstring;	return $currentstring;
}	}

Line 1710 sub end_menu {	Line 1969 sub end_menu {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\end{itemize}";	$currentstring = " \\end{itemize}";
}	}
return $currentstring;	return $currentstring;
}	}

Line 1722 sub start_dir {	Line 1981 sub start_dir {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = &end_p(); # In case there's a <p> prior to the list.	my $currentstring = &end_p(); # In case there's a <p> prior to the list.
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= " \\begin{itemize} ";	$currentstring .= " \\begin{itemize} ";
}	}
return $currentstring;	return $currentstring;
}	}

Line 1733 sub end_dir {	Line 1992 sub end_dir {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\end{itemize}";	$currentstring = " \\end{itemize}";
}	}
return $currentstring;	return $currentstring;
}	}

Line 1745 sub start_ol {	Line 2004 sub start_ol {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p(); # In case there's a <p> prior to the list.	my $currentstring = &end_p(); # In case there's a <p> prior to the list.
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$Apache::londefdef::list_index=0;	$Apache::londefdef::list_index=0;
my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);	my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
if ($type eq '1') {	if ($type eq '1') {
$currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.	$currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
'\renewcommand{\labelenumii}{\arabic{enumii}.}'.	'\renewcommand{\labelenumii}{\arabic{enumii}.}'.
'\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.	'\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
'\renewcommand{\labelenumiv}{\arabic{enumiv}.}';	'\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
} elsif ($type eq 'A') {	} elsif ($type eq 'A') {
$currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.	$currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
'\renewcommand{\labelenumii}{\Alph{enumii}.}'.	'\renewcommand{\labelenumii}{\Alph{enumii}.}'.
'\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.	'\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
'\renewcommand{\labelenumiv}{\Alph{enumiv}.}';	'\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
} elsif ($type eq 'a') {	} elsif ($type eq 'a') {
Line 1775 sub start_ol {	Line 2034 sub start_ol {
'\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.	'\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
'\renewcommand{\labelenumiv}{\Roman{enumiv}.}';	'\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
}	}
$currentstring .= '\strut \begin{enumerate}';	$currentstring .= '\strut \begin{enumerate}';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1784 sub end_ol {	Line 2043 sub end_ol {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.	$currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
'\renewcommand{\labelenumii}{\arabic{enumii}.}'.	'\renewcommand{\labelenumii}{\arabic{enumii}.}'.
'\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.	'\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
'\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';	'\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
}	}
return $currentstring;	return $currentstring;
}	}

Line 1799 sub start_dl {	Line 2058 sub start_dl {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.	my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\begin{description}';	$currentstring .= '\begin{description}';
$Apache::londefdef::DL++;	$Apache::londefdef::DL++;
Line 1807 sub start_dl {	Line 2066 sub start_dl {
$Apache::londefdef::DD[$Apache::londefdef::DL]=0;	$Apache::londefdef::DD[$Apache::londefdef::DL]=0;
$Apache::londefdef::DT[$Apache::londefdef::DL]=0;	$Apache::londefdef::DT[$Apache::londefdef::DL]=0;
$Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;	$Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
}	}
return $currentstring;	return $currentstring;
}	}

Line 1815 sub end_dl {	Line 2074 sub end_dl {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }	if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }	if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
Line 1823 sub end_dl {	Line 2082 sub end_dl {
$currentstring.=' '.$element.' ';	$currentstring.=' '.$element.' ';
}	}
pop(@Apache::londefdef::description);	pop(@Apache::londefdef::description);
$currentstring.='\end{description}';	$currentstring.='\end{description}';
delete($Apache::londefdef::DD[$Apache::londefdef::DL]);	delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
delete($Apache::londefdef::DT[$Apache::londefdef::DL]);	delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);	delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
$Apache::londefdef::DL--;	$Apache::londefdef::DL--;
}	}
return $currentstring;	return $currentstring;
}	}

Line 1837 sub start_dt {	Line 2096 sub start_dt {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring='';	my $currentstring='';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }	if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }	if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
$Apache::londefdef::DT[-1]++;	$Apache::londefdef::DT[-1]++;
$Apache::londefdef::seenDT[-1]=1;	$Apache::londefdef::seenDT[-1]=1;
}	}
return $currentstring;	return $currentstring;
}	}

Line 1852 sub end_dt {	Line 2111 sub end_dt {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
if ($Apache::londefdef::DT[-1]) {	if ($Apache::londefdef::DT[-1]) {
my $data=&item_cleanup();	my $data=&item_cleanup();
push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');	push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
$Apache::londefdef::DT[-1]--;	$Apache::londefdef::DT[-1]--;
}	}
}	}
return $currentstring;	return $currentstring;
}	}

sub item_cleanup {	sub item_cleanup {
my $item=&Apache::lonxml::endredirection();	my $item=&Apache::lonxml::endredirection();
$item=~s/\\begin{center}//g;	$item=~s/\\begin\{center}//g;
$item=~s/\\end{center}//g;	$item=~s/\\end\{center}//g;
return $item;	return $item;
}	}

Line 1875 sub start_dd {	Line 2134 sub start_dd {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }	if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}	if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
Line 1886 sub start_dd {	Line 2145 sub start_dd {
$Apache::londefdef::description[-1]->[-1].=' \strut ';	$Apache::londefdef::description[-1]->[-1].=' \strut ';
$Apache::londefdef::DD[-1]++;	$Apache::londefdef::DD[-1]++;
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
}	}
return $currentstring;	return $currentstring;
}	}

Line 1894 sub end_dd {	Line 2153 sub end_dd {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$Apache::londefdef::description[-1]->[-1].=	$Apache::londefdef::description[-1]->[-1].=
&Apache::lonxml::endredirection().' \vskip 0mm ';	&Apache::lonxml::endredirection().' \vskip 0mm ';
Line 1906 sub end_dd {	Line 2165 sub end_dd {
#-- <table> tag (end tag required)	#-- <table> tag (end tag required)
# <table> also ends any prior <p> that is not closed.	# <table> also ends any prior <p> that is not closed.
# but, unless I allow <p>'s to nest, that's the	# but, unless I allow <p>'s to nest, that's the
# only way I could think of to allow <p> in	# only way I could think of to allow <p> in
# <tr> <th> bodies	# <tr> <th> bodies
#	#
#list of supported attributes: border,width,TeXwidth	#list of supported attributes: border,width,TeXwidth,TeXtheme
	# align
sub start_table {	sub start_table {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $textwidth = '';	my $textwidth = '';
my $currentstring = &end_p();	my $currentstring = &end_p();
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
push(@Apache::londefdef::table, {});	&disable_para(); # Can't have paras in a table.
$Apache::londefdef::table[-1]{'row_number'} = -1;
#maximum table's width (default coincides with text line length)	# Get the parameters that we can do something about:
if ($#Apache::londefdef::table==0) {
$textwidth=&recalc($env{'form.textwidth'}); #result is always in mm	my $border = &Apache::lonxml::get_param('border', $parstack, $safeeval, undef, 0);
$textwidth=~/(\d+\.?\d*)/;	my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval, undef, 0);
$textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame	my $theme = &Apache::lonxml::get_param('TeXtheme', $parstack, $safeeval, undef, 0);
} else {	my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 0);
if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {	my $cell_border = &Apache::lonxml::get_param('rules', $parstack, $safeeval, undef, 0);
#the maximum width of nested table is determined by LATeX width of parent cell
$textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];	# The only thing that needs any figuring out is the width.. and then only if it is
} else {	# a percent. If not it's assumed to be some valid TeX measurement unit e.g. 3.0cm
#try to use all space not used before (minus 5% for LaTeX table internal) - rather silly	#
$textwidth=$Apache::londefdef::table[-2]{'width'};
for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {	my $table = new Apache::lontable();
$textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];	if ((defined $border) && ($border > 0)) {
}	# &Apache::lonnet::logthis("Turning on table borders: $border");
	$table->table_border(1);
	if (!defined $cell_border) {
	$table->cell_border(1); # Default for rules is all if rules not defined.
}	}
}	}

# width either comes forced from the TeXwidth or the width parameters.	if ((defined $cell_border)) {
# in either case it can be a percentage or absolute width.	if ($cell_border eq 'all') {
# in the width case we ignore absolute width	$table->cell_border(1);
my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);	} elsif ($cell_border eq 'rows') {
if (!defined($TeXwidth)) {	$table->cell_border(2);
my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,	} elsif ($cell_border eq 'cols') {
$safeeval,undef,1);	$table->cell_border(3);
if ($htmlwidth =~ /%/) {	} elsif($cell_border eq 'groups') {
$TeXwidth = $htmlwidth;	$table->cell_border(4);
} else {	} else {
$TeXwidth = $textwidth;	$table->cell_border(0);
}	}
} else {
$Apache::londefdef::table[-1]{'forcedtablewidth'} = 1;
}	}
if ($TeXwidth=~/%/) {	if (defined $theme) {
$Apache::londefdef::table[-1]{'percent'}=1;	$table->theme($theme);
$TeXwidth=~/(\d+)/;
$Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
} else {
$Apache::londefdef::table[-1]{'width'}=$TeXwidth;
}	}
# In the end, however the table width cannot be wider than $textwidth...	if (defined $align) {
	$table->alignment($align);
if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
$Apache::londefdef::table[-1]{'width'} = $textwidth;
}	}

#table's border	# Missing width is most of page width
my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);	if (!(defined $width)) {
unless (defined $border) { $border = 0; }	$width = '70%';
if ($border) {
$Apache::londefdef::table[-1]{'hinc'} = '\hline ';
$Apache::londefdef::table[-1]{'vinc'} = '&';
$Apache::londefdef::table[-1]{'vvinc'} = '\|';
} else {
$Apache::londefdef::table[-1]{'hinc'} = '';
$Apache::londefdef::table[-1]{'vinc'} = '&';
$Apache::londefdef::table[-1]{'vvinc'} = '';
}
if ($#Apache::londefdef::table==0) {
# Note that \newline seems to destroy the alignment envs.
# $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
$Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
}
$Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
$Apache::londefdef::table[-1]{'TeXlen'}=[];
$Apache::londefdef::table[-1]{'objectlen'}=[];
$Apache::londefdef::table[-1]{'objectsignal'}=[];
$Apache::londefdef::table[-1]{'maxlen'}=[];
$Apache::londefdef::table[-1]{'minlen'}=[];
$Apache::londefdef::table[-1]{'content'}=[];
$Apache::londefdef::table[-1]{'align'}=[];
if (&is_inside_of($tagstack, 'sup')) {
$currentstring .= '}} \\\\ \ensuremath{^{ ';
}	}
if (&is_inside_of($tagstack, 'sub')) {
$currentstring .= '}} \\\\ \ensuremath{_{ ';	# If a percentage, need to calculate what this means in terms of
	# page width:

	if ($width =~ /%$/) {
	my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
	$width =~ s/%//;
	$width = $width * $textwidth / 100.0;
	$width .= " mm";
	$table->width($width);
}	}
$currentstring.=' \keephidden{NEW TABLE ENTRY}';

	push(@Apache::londefdef::table, $table);
	$currentstring.=' \keephidden{NEW TABLE ENTRY}';

}	}
return $currentstring;	return $currentstring;
}	}

sub end_table {	sub end_table {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $inmemory = '';
my $output = '';
my $WARNING='';	my $table = pop(@Apache::londefdef::table);
#width of columns from TeXwidth attributes	my $t = $table->generate();
	# &Apache::lonnet::logthis("Generating string");
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {	$currentstring = $t->generate_string();
for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {	# &Apache::lonnet::logthis("Generated: $currentstring");
if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {	&enable_para();
$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
}
}
}
#free space and number of empty columns
my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
$empty_columns++;
} else {
$available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
}
}
#boundaries for contents columns
my @min_len=();#columns can not be narrower
my @max_len=();#maximum length of column
for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
my ($localmin,$localmax)=(0,0);
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
$localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
}
if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
$localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
}
}
push @min_len, $localmin;
push @max_len, $localmax;
}
for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
my $localmin=0,;
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
$localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
}
}
if ($max_len[$jn]<$localmin) {
$max_len[$jn]=$localmin;
$Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
}#object size is bigger
if ($min_len[$jn]<$localmin) {
$min_len[$jn]=$localmin;
$Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
}#object size is bigger
if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
$min_len[$jn]=0;
$max_len[$jn]=0;
}
}
#final adjustment of column width
my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
my @adjust=();
#step 1. adjustment by maximum value
my $space_neeeded=0;
for (my $jn=0;$jn<=$#max_len;$jn++) {
$space_neeeded=$space_neeeded+$max_len[$jn];
}
if ($space_neeeded<=$available_space) {
for (my $jn=0;$jn<=$#max_len;$jn++) {
if ($fwidth[$jn]==0) {
$fwidth[$jn]=$max_len[$jn];
}
}
} else {
#step 2. adjustment by minimum value (estimation)
$space_neeeded=0;
for (my $jn=0;$jn<=$#min_len;$jn++) {
$space_neeeded+=$min_len[$jn];
}
if ($space_neeeded>$available_space) {
$WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
for (my $jn=0;$jn<=$#max_len;$jn++) {
if ($fwidth[$jn]==0) {
$fwidth[$jn]=$min_len[$jn];
}
}
#check if we have objects which can be scaled
my $how_many_to_scale=0;
my @to_scale=();
for (my $jn=0;$jn<=$#max_len;$jn++) {
if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
$how_many_to_scale++;
push @to_scale, $jn;
}
}
if ($how_many_to_scale>0) {
my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
foreach my $jn (@to_scale) {
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
$Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s=\s(\d+\.?\d\s(mm\|cm\|in\|pc\|pt)*)/;
if ($1 ne '') {
my $current_length=&recalc($1);
$current_length=~/(\d+\.?\d*)/;
$current_length=$current_length-$space_to_adjust;
$Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s=\s(\d+\.?\d\s(mm\|cm\|in\|pc\|pt)*)/width=$current_length mm/;
}
$Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d)\smm\]/;
if ($1 ne '') {
my $current_length=$1;
$current_length=$current_length-$space_to_adjust;
$Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d)\smm\]/\[$current_length mm\]/;
}
}
$fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
}
}
} else {
#step 3. adjustment over minimal + corrections
my $enlarge_coef=$available_space/$space_neeeded;
my $acsessive=0;
for (my $jn=0;$jn<=$#min_len;$jn++) {
$adjust[$jn]=$min_len[$jn]*$enlarge_coef;
if ($adjust[$jn]>$max_len[$jn]) {
$fwidth[$jn]=$max_len[$jn];
$acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
$adjust[$jn]=0;
}
}
if ($acsessive>0) {
#we have an excess of space and can redistribute it
my $notempty_columns=0;
for (my $jn=0;$jn<=$#min_len;$jn++) {
if ($adjust[$jn]!=0) {
$notempty_columns++;
}
}
my $per_column=$acsessive/$notempty_columns;
for (my $jn=0;$jn<=$#min_len;$jn++) {
if ($adjust[$jn]!=0) {
$adjust[$jn]+=$per_column;
$fwidth[$jn]=$adjust[$jn];
}
}
} else {
for (my $jn=0;$jn<=$#min_len;$jn++) {
$fwidth[$jn]=$adjust[$jn];
}
}
}
}
#use all available width if it is defined in % or as TeXwidth
if (($Apache::londefdef::table[-1]{'percent'}==1) \|\| ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
my $current=0;
for (my $i=0;$i<=$#fwidth;$i++) {
$current+=$fwidth[$i];
}
my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
for (my $i=0;$i<=$#fwidth;$i++) {
$fwidth[$i]*=$coef;
}
}
#removing of empty columns if allowed
my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
if ($permission eq 'yes') {
my @cleaned_table=();
my @cleaned_header=();
my $colind=0;
for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
if ($fwidth[$jn]!=0) {
#we need to copy column
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
$cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
$cleaned_header[$colind]=$fwidth[$jn];
}
$colind++;
}
}
$Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
@fwidth=@cleaned_header;
}
#construct header of the table
my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
for (my $in=0;$in<=$#fwidth;$in++) {
$header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
}
$header_of_table .= '}';
#fill the table
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
my $have_rowspan = 0;
for (my $jn=0;$jn<=$#fwidth;$jn++) {

#-----------------------------------------------------------
# I think this order of doing things will ensure that
# single rowspan, columspan and combined row/colspans will
# work correctly. LaTeX is delicate here.
# RF.

# Start a rowspan if necessary:

my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
#
# Do the appropriate magic if this has a colspan
#

if ($colspan > 1) {
my $spanwidth = 0;
for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
$spanwidth += $fwidth[$spancol];
}
$output .= '\multicolumn{'.
$colspan
."}";
if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
$output .= '{\|c\|}{';
} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
$output .= '{\|r\|}{';
}
else {
$output .= "{\|p{$spanwidth mm}\|}{";
}

}

# Rowspan... if colspan is 1, and there's an alignment we'll need
# to kick in a multicolumn in order to get the alignment spec.
# this must precede the multirow or LaTex gets quite upset.
# Naturally if colspan > 1 we've already done that above ^
#
my $multirow_aligned = 0;
if ($rowspan > 1) {
if ($colspan == 1) {
if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
$output .= '\multicolumn{1}{\|c\|}{';
$multirow_aligned = 1;
} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
$output .= '\multicolumn{1}{\|r\|}{';
$multirow_aligned = 1;
}
}
$have_rowspan++;
$output .= '\multirow{'.$rowspan.'}[0]{*}{';
#
# If we did not throw in a multicolumn to align, then add
# an extra {
# so we close correctly without having to keep additional state
# around
#
if (!$multirow_aligned) {
$output .= '{';
}
}
if (($rowspan eq '^') \|\| ($rowspan eq '_')) {
$have_rowspan++;
}
#--------------------------------------------------------------


# For right and center alignment of single cells.
# we are going to use a multicolumn with a span of 1 to specify alignment.
#
if ($colspan == 1 && $rowspan == 1) {
if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
$output .= '\multicolumn{1}{\|c\|}{';
} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
$output .= '\multicolumn{1}{\|r\|}{';
}
}

$output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];

if (($colspan == 1 && $rowspan == 1) &&
(($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') \|\|
($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
$output .= '}';
}

# Close off any open multirow:

if ($rowspan > 1) {
$output .= '}}';
}
# Close off the colspan...
#
if ($colspan > 1) {
$output .= '}';
$jn += $colspan-1; # Adjust for number of rows really left.
}
if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
}
# If have_rowspan > 0, and borders are on, then
# we need to do more than put an \hline at the bottom of row.
# we need to do the appropriate \cline to ensure that
# the spanned rows don't have \hlines through them.

if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
$output .= ' \\\\ ';
for (my $jn=0; $jn<=$#fwidth;$jn++) {
my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
if ($rowspan ne "^") {
if (($rowspan <= 1) \|\| ($rowspan eq '_')) {
my $column = $jn+1;
$output .= '\cline{'.$column.'-'.$column.'} ';
}
}
}

} else {
$output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
}
}
# Note that \newline destroys alignment env's produced by e.g. <div>
# $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
$Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
if ($#Apache::londefdef::table > 0) {
my $inmemory = $Apache::londefdef::table[-1]{'output'};
# Figure out max/and min width by summing us and then
# apply that to the current column of the table we nest in
# if it's larger than the current width or the current width
# is undefined.
#
my $min_nested_width = 0;
my $max_nested_width = 0;
for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
$min_nested_width += $min_len[$col];
$max_nested_width += $max_len[$col];

}
# Fudge in an extra 5 mm for borders etc:

$min_nested_width += 5;
$max_nested_width += 5;

my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
$Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
}
if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
$Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
}

pop @Apache::londefdef::table;
push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
} else {
$currentstring .= $Apache::londefdef::table[-1]{'output'};
pop @Apache::londefdef::table;
undef @Apache::londefdef::table;
}
}	}
return $currentstring;	return $currentstring;
}	}
Line 2367 sub start_tr {	Line 2268 sub start_tr {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {

	my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1);
	$Apache::londefdef::table[-1]->start_row();

	if ($align ne '') {
	$Apache::londefdef::table[-1]->configure_row({default_halign => $align});
	}

	#---------------------------------------------------------------
	# Old table code.
	#---------------------------------------------------------------

	if (0) {
$Apache::londefdef::table[-1]{'row_number'}++;	$Apache::londefdef::table[-1]{'row_number'}++;
my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);	my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($alignchar ne '') {	if ($alignchar ne '') {
Line 2387 sub start_tr {	Line 2301 sub start_tr {
push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];	push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];	push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
push @ {$Apache::londefdef::table[-1]{'content'}}, [];	push @ {$Apache::londefdef::table[-1]{'content'}}, [];
}	}
	}
return $currentstring;	return $currentstring;
}	}

sub end_tr {	sub end_tr {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p(); # Close any pending <p> in the row.	my $currentstring = &end_p(); # Close any pending <p> in the row.
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {

	# In case the user is missing a </td> or </th> tag:

	if ($Apache::londefdef::TD_redirection) {
	&end_td_tex($parstack,$parser,$safeeval);
	}
	$Apache::londefdef::table[-1]->end_row();

	#-----------------------------------------------
	# Old table code
	#-----------------------------------------------

	if (0) {
if ($Apache::londefdef::TD_redirection) {	if ($Apache::londefdef::TD_redirection) {
&end_td_tex($parstack,$parser,$safeeval);	&end_td_tex($parstack,$parser,$safeeval);
}	}
# Counter columns must be the maximum number of columns seen	# Counter columns must be the maximum number of columns seen
# in the table so far so:	# in the table so far so:
if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {	if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
$Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};	$Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
}	}
	}


}	}
Line 2417 sub start_td {	Line 2345 sub start_td {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$Apache::londefdef::TD_redirection = 1;	$Apache::londefdef::TD_redirection = 1;
&tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);	&tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
}	}
return $currentstring;	return $currentstring;
}	}

sub tag_check {	sub tag_check {
my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
my @ar=@$parstack;	my @ar=@$parstack;
for (my $i=$#ar-1;$i>=0;$i--) {	for (my $i=$#ar-1;$i>=0;$i--) {
if (lc($$tagstack[$i]) eq $good_tag) {	if (lc($$tagstack[$i]) eq $good_tag) {
&start_td_tex($parstack,$parser,$safeeval);	&start_td_tex($parstack,$parser,$safeeval);
Line 2441 sub tag_check {	Line 2369 sub tag_check {
}	}
return '';	return '';
}	}

	#
	# Factor out cell configuration hash generation:
	#

	sub cell_config_hash {
	my ($align, $rowspan, $colspan, $width) = @_;
	if ($rowspan ne '') {
	$rowspan =~ s/^\s+\|\s+$//g;
	}
	if ($colspan ne '') {
	$colspan =~ s/^\s+\|\s+$//g;
	}
	my %config;
	if ($align ne '') {
	$config{'halign'} = $align;
	}
	if (($colspan =~ /^\d+$/) && ($colspan > 0)) {
	$config{'colspan'} = $colspan;
	}
	if (($rowspan =~ /^\d+$/) && ($rowspan > 0)) {
	$config{'rowspan'} = $rowspan;
	}
	if ($width ne '') {
	$config{'width'} = $width;
	}
	return \%config;
	}

sub start_td_tex {	sub start_td_tex {
my ($parstack,$parser,$safeeval) = @_;	my ($parstack,$parser,$safeeval) = @_;

	# At this stage, an empty cell is created with the
	# appropriate rowspan/colspan and alignment
	# attributes, but empty of text. end_td_tex will
	# fetch the contents from the recursive parse and
	# fill the cell with them:
	my $align = &Apache::lonxml::get_param('align', $parstack, $safeeval);
	my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval);
	my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval);
	my $width = &Apache::lonxml::get_param('TeXwidth', $parstack, $safeeval);
	my $config = &cell_config_hash($align, $rowspan, $colspan, $width);

	my $table = $Apache::londefdef::table[-1];
	$table->add_cell('', $config);


	#------------------------------------------------
	# Old table code.
	#------------------------------------------------

	if (0) {

my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);	my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
if ($alignchar eq '') {	if ($alignchar eq '') {
$alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];	$alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
Line 2456 sub start_td_tex {	Line 2434 sub start_td_tex {
$current_length=~/(\d+\.?\d*)/;	$current_length=~/(\d+\.?\d*)/;
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;	push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
}	}
	}
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
return '';	return '';
}	}

sub end_td_tex {	sub end_td_tex {

	my $text = &Apache::lonxml::endredirection();
	my $table = $Apache::londefdef::table[-1];
	$table->append_cell_text($text);

	#-------------------------------------------------
	# Old table code
	#-------------------------------------------------

	if (0) {
my ($parstack,$parser,$safeeval) = @_;	my ($parstack,$parser,$safeeval) = @_;
my $current_row = $Apache::londefdef::table[-1]{'row_number'};	my $current_row = $Apache::londefdef::table[-1]{'row_number'};
my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};	my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
my $data = &Apache::lonxml::endredirection();	my $data = &Apache::lonxml::endredirection();

# The rowspan array of the table indicates which cells are part of a span.	# The rowspan array of the table indicates which cells are part of a span.
Line 2473 sub end_td_tex {	Line 2462 sub end_td_tex {
# If this and subsequent cells are part of a rowspan, we must	# If this and subsequent cells are part of a rowspan, we must
# push along the row until we find one that is not.	# push along the row until we find one that is not.

while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])	while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
&& ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {	&& ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
# Part of a span.	# Part of a span.
push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';	push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
$current_column++;	$current_column++;
}	}
$Apache::londefdef::table[-1]{'counter_columns'} = $current_column;	$Apache::londefdef::table[-1]{'counter_columns'} = $current_column;


# Get the column and row spans.	# Get the column and row spans.
# Colspan can be done via \multicolumn if I can figure out the data structs.	# Colspan can be done via \multicolumn if I can figure out the data structs.
Line 2509 sub end_td_tex {	Line 2498 sub end_td_tex {

my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);	my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
if (defined $TeXwidth) {	if (defined $TeXwidth) {
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	for (my $c = 0; $c < $colspan; $c++) {
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
	push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
	}
} else {	} else {
if (($data=~m/width\s=\s(\d+\.?\d\s(mm\|cm\|in\|pc\|pt))/) or ($data=~m/\[(\d+\.?\d)\s*mm\]/)) {	if (($data=~m/width\s=\s(\d+\.?\d\s(mm\|cm\|in\|pc\|pt))/) or ($data=~m/\[(\d+\.?\d)\s*mm\]/)) {
my $garbage_data=$data;	my $garbage_data=$data;
Line 2527 sub end_td_tex {	Line 2518 sub end_td_tex {
if ($fwidth<$current_length) {$fwidth=$current_length;}	if ($fwidth<$current_length) {$fwidth=$current_length;}
$garbage_data=~s/\[(\d+\.?\d)\smm\]//;	$garbage_data=~s/\[(\d+\.?\d)\smm\]//;
}	}
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	for (my $c = 0; $c < $colspan; $c++) {
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;	push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
	push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
	}
} elsif ($data=~/\\parbox\{\s\d+\.?\d\s(mm\|cm\|in\|pc\|pt)\s\}/ or $data=~/\\epsfxsize\s=\s\d+\.?\d\s(mm\|cm\|in\|pc\|pt)/) {	} elsif ($data=~/\\parbox\{\s\d+\.?\d\s(mm\|cm\|in\|pc\|pt)\s\}/ or $data=~/\\epsfxsize\s=\s\d+\.?\d\s(mm\|cm\|in\|pc\|pt)/) {
my $garbage_data=$data;	my $garbage_data=$data;
my $fwidth=0;	my $fwidth=0;
Line 2546 sub end_td_tex {	Line 2539 sub end_td_tex {
if ($fwidth<$1) {$fwidth=$1;}	if ($fwidth<$1) {$fwidth=$1;}
$garbage_data=~s/\\epsfxsize\s=\s(\d+\.?\d\s(mm\|cm\|in\|pc\|pt)*)//;	$garbage_data=~s/\\epsfxsize\s=\s(\d+\.?\d\s(mm\|cm\|in\|pc\|pt)*)//;
}	}
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	for (my $c = 0; $c < $colspan; $c++) {
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;	push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
$data=~s/\\\\\s*$//;	push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
} else {	}
$data=~s/^\s+(\S.*)/$1/;	$data=~s/\\\\\s*$//;
	} else {
	$data=~s/^\s+(\S.*)/$1/;
$data=~s/(.*\S)\s+$/$1/;	$data=~s/(.*\S)\s+$/$1/;
$data=~s/(\s)+/$1/;	$data=~s/(\s)+/$1/;
my ($current_length,$min_length)=(0,0);	my ($current_length,$min_length)=(0,0);
Line 2577 sub end_td_tex {	Line 2572 sub end_td_tex {
if ($min_length<$lengthword) {$min_length=$lengthword;}	if ($min_length<$lengthword) {$min_length=$lengthword;}
}	}
}	}
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	for (my $c = 0; $c < $colspan; $c++) {
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;	push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;	push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
}	push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
	}
	}
}	}
# Substitute all of the tables nested in this cell in their appropriate places.	# Substitute all of the tables nested in this cell in their appropriate places.


my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...	my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
for (my $in=0; $in<=$nested_count; $in++) {	for (my $in=0; $in<=$nested_count; $in++) {
my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};	my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
$nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;	$nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
# $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;	# $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
Line 2617 sub end_td_tex {	Line 2614 sub end_td_tex {

}	}

	}

return '';	return '';
}	}
Line 2626 sub end_td {	Line 2623 sub end_td {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$Apache::londefdef::TD_redirection =0;	$Apache::londefdef::TD_redirection =0;
&end_td_tex($parstack,$parser,$safeeval);	&end_td_tex($parstack,$parser,$safeeval);
Line 2639 sub start_th {	Line 2636 sub start_th {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$Apache::londefdef::TD_redirection = 1;	$Apache::londefdef::TD_redirection = 1;
&tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);	&tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
}	}
return $currentstring;	return $currentstring;
}	}

sub tagg_check {	sub tagg_check {
my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
my @ar=@$parstack;	my @ar=@$parstack;
for (my $i=$#ar-1;$i>=0;$i--) {	for (my $i=$#ar-1;$i>=0;$i--) {
if (lc($$tagstack[$i]) eq $good_tag) {	if (lc($$tagstack[$i]) eq $good_tag) {
&start_th_tex($parstack,$parser,$safeeval);	&start_th_tex($parstack,$parser,$safeeval);
Line 2663 sub tagg_check {	Line 2660 sub tagg_check {
}	}
return '';	return '';
}	}

sub start_th_tex {	sub start_th_tex {
my ($parstack,$parser,$safeeval) = @_;	my ($parstack,$parser,$safeeval) = @_;

	my $alignment = &Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1);
	my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 1);
	my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 1);

	my $config = cell_config_hash($alignment, $rowspan, $colspan);
	my $table = $Apache::londefdef::table[-1];
	$table->add_cell('\textbf{', $config);

	#-------------------------------------------------------------------------------------
	#
	# Old table code.
	#
	#--------------------------------------------------------------------------------------

	if (0) {


my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);	my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
if ($alignchar eq '') {	if ($alignchar eq '') {
$alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];	$alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
Line 2678 sub start_th_tex {	Line 2693 sub start_th_tex {
$current_length=~/(\d+\.?\d*)/;	$current_length=~/(\d+\.?\d*)/;
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;	push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
}	}
	}

	# Accept xml until the </th> tag.

&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
return '';	return '';
}	}

sub end_th_tex {	sub end_th_tex {
my ($parstack,$parser,$safeeval) = @_;	my ($parstack,$parser,$safeeval) = @_;

	my $table = $Apache::londefdef::table[-1];
	my $text = &Apache::lonxml::endredirection();
	$table->append_cell_text($text.'}');

	#-----------------------------------------------------------------------------
	# Old table code:
	#-----------------------------------------------------------------------------

	if (0) {
my $current_row = $Apache::londefdef::table[-1]{'row_number'};	my $current_row = $Apache::londefdef::table[-1]{'row_number'};
my $data=&Apache::lonxml::endredirection();	my $data=&Apache::lonxml::endredirection();
my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);	my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
Line 2710 sub end_th_tex {	Line 2739 sub end_th_tex {
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;	push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
} else {	} else {
$data=~s/^\s+(\S.*)/$1/;	$data=~s/^\s+(\S.*)/$1/;
$data=~s/(.*\S)\s+$/$1/;	$data=~s/(.*\S)\s+$/$1/;
$data=~s/(\s)+/$1/;	$data=~s/(\s)+/$1/;
my ($current_length,$min_length)=(0,0);	my ($current_length,$min_length)=(0,0);
Line 2740 sub end_th_tex {	Line 2769 sub end_th_tex {
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';	push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;	push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;	push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
}	}
}	}
for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {	for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
$data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;	$data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
}	}
#make data bold	#make data bold
$data='\textbf{'.$data.'}';	$data='\textbf{'.$data.'}';
push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;	push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
	}
return'';	return'';
}	}

Line 2755 sub end_th {	Line 2785 sub end_th {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p(); # Close any open <p> in the row.	my $currentstring = &end_p(); # Close any open <p> in the row.
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$Apache::londefdef::TD_redirection =0;	$Apache::londefdef::TD_redirection =0;
&end_th_tex($parstack,$parser,$safeeval);	&end_th_tex($parstack,$parser,$safeeval);
}	}
return $currentstring;	return $currentstring;
}	}

#-- <img> tag (end tag forbidden)	#-- <img> tag (end tag forbidden)
#	#
# Render the <IMG> tag.	# Render the <IMG> tag.
# <IMG> has the following attributes (in addition to the	# <IMG> has the following attributes (in addition to the
# standard HTML ones:	# standard HTML ones:
# TeXwrap - Governs how the tex target will try to wrap text around	# TeXwrap - Governs how the tex target will try to wrap text around
# horizontally aligned images.	# horizontally aligned images.
# TeXwidth - The width of the image when rendered for print (mm).	# TeXwidth - The width of the image when rendered for print (mm).
# TeXheight - The height of the image when rendered for print (mm)	# TeXheight - The height of the image when rendered for print (mm)
# (Note there seems to also be support for this as a % of page size)	# (Note there seems to also be support for this as a % of page size)
#	#
sub start_img {	sub start_img {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,	my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
undef,1);	undef,1);
if (! $src &&	if (! $src &&
($target eq 'web' \|\| $target eq 'webgrade' \|\| $target eq 'tex')	($target eq 'web' \|\| $target eq 'webgrade' \|\| $target eq 'tex')
) {	) {
my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);	my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
return '';	return '';
}	}
&Apache::lonxml::extlink($src);	unless ($src =~ m{^data\:image/gif;base64,}) {
	&Apache::lonxml::extlink($src);
	}
my $currentstring = '';	my $currentstring = '';
my $scaling = .3;	my $scaling = .3;

# Render unto browsers that which are the browser's...	# Render unto browsers that which are the browser's...

if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
if ($env{'browser.imagesuppress'} ne 'on') {	my $enc = ('yes' eq
my $enc = ('yes' eq	lc(&Apache::lonxml::get_param('encrypturl',$parstack,
lc(&Apache::lonxml::get_param('encrypturl',$parstack,	$safeeval)));
$safeeval)));	unless ($src =~ m{^data\:image/gif;base64,}) {
$currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},	$currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
$enc);	$enc);
} else {	}
my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
undef,1);
if (!$alttag) {
$alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
$src);
}
$currentstring.='[IMAGE: '.$alttag.']';
}

# and render unto TeX that which is LaTeX

	# and render unto TeX that which is LaTeX
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
#	#
# The alignment will require some superstructure to be put around	# The alignment will require some superstructure to be put around
Line 2816 sub start_img {	Line 2839 sub start_img {
# simulate the alignments offered by html.	# simulate the alignments offered by html.
#	#
#	#
my $align = lc(&Apache::lonxml::get_param('align',	my $align = lc(&Apache::lonxml::get_param('align',
$parstack,	$parstack,
$safeeval,	$safeeval,
undef,1));	undef,1));
Line 2826 sub start_img {	Line 2849 sub start_img {
#	#
&Apache::lonxml::debug("Alignemnt = $align");	&Apache::lonxml::debug("Alignemnt = $align");
# LaTeX's image/text wrapping is really bad since it wants to	# LaTeX's image/text wrapping is really bad since it wants to
# make figures float.	# make figures float.
# The user has the optional parameter (applicable only to l/r	# The user has the optional parameter (applicable only to l/r
# alignment to use the picins/parpic directive to get wrapped text	# alignment to use the picins/parpic directive to get wrapped text
# this is also imperfect.. that's why we give them a choice...	# this is also imperfect.. that's why we give them a choice...
Line 2849 sub start_img {	Line 2872 sub start_img {

# &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");	# &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");

#if original gif/jpg/png file exist do following:	#if original bmp/gif/jpg/png/svg file exist do following:
my $origsrc=$src;	my $origsrc=$src;
my ($path,$file) = &get_eps_image($src);	my ($path,$file) = &get_eps_image($src);
# &Apache::lonnet::logthis("Image source: $src result: $path $file");	# &Apache::lonnet::logthis("Image source: $src result: $path $file");
Line 2863 sub start_img {	Line 2886 sub start_img {
if ($width_param) { $size.='width='.$width_param.' mm,'; }	if ($width_param) { $size.='width='.$width_param.' mm,'; }
if ($height_param) { $size.='height='.$height_param.' mm]'; }	if ($height_param) { $size.='height='.$height_param.' mm]'; }
# Default size if not able to extract that (e.g. eps image).	# Default size if not able to extract that (e.g. eps image).

# &Apache::lonnet::logthis("Size = $size");	# &Apache::lonnet::logthis("Size = $size");

$size='['.$size;	$size='['.$size;
$size=~s/,$/]/;	$size=~s/,$/]/;
$currentstring .= '\graphicspath{{'.$path.'}}'	$currentstring .= '\graphicspath{{'.$path.'}}'
.'\includegraphics'.$size.'{'.$file.'} ';	.'\includegraphics'.$size.'{'.$file.'} ';
	my $closure;
	($currentstring, $closure) = &align_latex_image($align,
	$latex_rendering,
	$currentstring,
	$width_param,
	$height_param);
	$currentstring .= $closure;

# If there's an alignment specification we need to honor it here.
# For the horizontal alignments, we will also honor the
# value of the latex specfication. The default is parbox,
# and that's used for illegal values too.
#
# Even though we set a default alignment value, the user
# could have given us an illegal value. In that case we
# just use the default alignment of bottom..
if ($align eq "top") {
$currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
} elsif (($align eq "center") \|\| ($align eq "middle")) { # Being kind
my $offset = $height_param/2;
$currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
} elsif ($align eq "left") {
if ($latex_rendering eq "parpic") {
$currentstring = '\parpic[l]{'.$currentstring.'}';
} elsif ($latex_rendering eq "parbox") {
$currentstring = '\begin{minipage}[l]{'.$width_param.'mm}'
.$currentstring.'\end{minipage}';
} elsif ($latex_rendering eq "wrapfigure"
\|\| $latexrendering ne 'none') { # wrapfig render
$currentstring =
'\begin{wrapfigure}{l}{'.$width_param.'mm}'
.'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
}
} elsif ($align eq "right") {
if ($latex_rendering eq "parpic") {
$currentstring = '\parpic[r]{'.$currentstring.'}';
} elsif ($latex_rendering eq "parbox") {
$currentstring = '\begin{minipage}[r]{'.$width_param.'mm}'
.$currentstring.'\end{minipage}';
} elsif ($latex_rendering eq "wrapfigure"
\|\| $latexrendering ne 'none') { # wrapfig render
$currentstring =
'\begin{wrapfigure}{r}{'.$width_param.'mm}'
.'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}';
}
} else { # Bottom is also default.
# $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
}
} else {	} else {
&Apache::lonxml::debug("$src does not exist");	&Apache::lonxml::debug("$src does not exist");
#original image file doesn't exist so check the alt attribute	#original image file doesn't exist so check the alt attribute
my $alt =	my $alt =
&Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);	&Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
unless ($alt) {	unless ($alt) {
$alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);	$alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
Line 2926 sub start_img {	Line 2916 sub start_img {
# And here's where the semi-quote breaks down: allow the user	# And here's where the semi-quote breaks down: allow the user
# to edit the beast as well by rendering the problem for edit:	# to edit the beast as well by rendering the problem for edit:
} elsif ($target eq 'edit') {	} elsif ($target eq 'edit') {
	my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
$currentstring .=&Apache::edit::tag_start($target,$token);	$currentstring .=&Apache::edit::tag_start($target,$token);
$currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).	$currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
&Apache::edit::browse('src',undef,'alt').' '.	&Apache::edit::browse_or_search('src',undef,'alt',$only,undef,1).
&Apache::edit::search('src',undef,'alt').'<br />';	'<br />';
$currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';	$currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
$currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);	$currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
$currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';	$currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
Line 2939 sub start_img {	Line 2930 sub start_img {
['','bottom','middle','top','left','right'],$token,5);	['','bottom','middle','top','left','right'],$token,5);
$currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',	$currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);	['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
	my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
	my $enc= &Apache::lonxml::get_param('encrypturl',$parstack,$safeeval);

$currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',	$currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
['no','yes'], $token, 2);	['no','yes'], $token, 2);
	if (($alt=~/\S/) && (lc($enc) eq 'yes')) {
	$currentstring.='<br /><span class="LC_warning">'.&mt('Warning: the description "[_1]" will be available, even for encrypted URL',$alt).'</span><br />';
	}
$currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();	$currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);	my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);	my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);	my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
	my $element = &Apache::edit::get_element('src');
	my $text;
$currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';	if ($token->[2]{'src'}=~/\$/) {
if ($width) { $currentstring.=' width="'.$width.'" '; }	$text = &mt('Variable image source');
if ($height) { $currentstring.=' height="'.$height.'" '; }	} elsif ($token->[2]{'src'}=~/\S/) {
$currentstring .= ' />';	$currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
	if ($width) { $currentstring.=' width="'.$width.'" '; }
	if ($height) { $currentstring.=' height="'.$height.'" '; }
	$currentstring .= ' id="previewimg_'.$element.'" />';
	} else {
	$text = &mt("No image source specified");
	}
	$currentstring .= ' <span id="showimg_'.$element.'">'.$text.'</span>';
} elsif ($target eq 'modified') {	} elsif ($target eq 'modified') {
my ($osrc,$owidth,$oheight)=	my ($osrc,$owidth,$oheight)=
($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});	($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
Line 2972 sub start_img {	Line 2975 sub start_img {
}	}
if ($osrc ne $nsrc \|\| (!$nwidth && !$nheight)) {	if ($osrc ne $nsrc \|\| (!$nwidth && !$nheight)) {
# changed image or no size specified,	# changed image or no size specified,
# if they didn't explicitly change the	# if they didn't explicitly change the
# width or height use the ones from the image	# width or height use the ones from the image
if ($iwidth && $iheight) {	if ($iwidth && $iheight) {
if ($owidth == $nwidth \|\| (!$nwidth && !$nheight)) {	if ($owidth == $nwidth \|\| (!$nwidth && !$nheight)) {
Line 3011 sub end_img {	Line 3014 sub end_img {
#-- <applet> tag (end tag required)	#-- <applet> tag (end tag required)
sub start_applet {	sub start_applet {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;

my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);	my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
&Apache::lonxml::extlink($code);	&Apache::lonxml::extlink($code);
my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,	my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
Line 3019 sub start_applet {	Line 3022 sub start_applet {
&Apache::lonxml::extlink($archive);	&Apache::lonxml::extlink($archive);
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
if ($env{'browser.appletsuppress'} ne 'on') {	$currentstring = $token->[4];
$currentstring = &Apache::lonenc::encrypt_ref($token,
{'code'=>$code,
'archive'=>$archive}
);
} else {
my $alttag= &Apache::lonxml::get_param('alt',$parstack,
$safeeval,undef,1);
unless ($alttag) {
$alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
$code);
}
$currentstring='[APPLET: '.$alttag.']';
}
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
	# Turn off some stuff we can't be inside thank you LaTeX

	my $restart_sub = 0;
	my $restart_sup = 0;

	# Since <sub> and <sup> are simple tags it's ok to turn off/on
	# using the start_ stop_ functions.. those tags only care about
	# $target.

	if (&is_inside_of($tagstack, "sub")) {
	$restart_sub = 1;
	$currentstring .= &end_sub($target, $token, $tagstack,
	$parstack, $parser, $safeeval);
	}
	if (&is_inside_of($tagstack, "sup")) {
	$restart_sup = 1;
	$currentstring .= &end_sup($target, $token, $tagstack,
	$parstack, $parser, $safeeval);
	}

	# Now process the applet; just replace it with its alt attribute.

my $alttag= &Apache::lonxml::get_param('alt',$parstack,	my $alttag= &Apache::lonxml::get_param('alt',$parstack,
$safeeval,undef,1);	$safeeval,undef,1);
unless ($alttag) {	unless ($alttag) {
Line 3044 sub start_applet {	Line 3056 sub start_applet {
}	}
$currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.	$currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
'.}\end{center}';	'.}\end{center}';
}
	# Turn stuff back on that we can't be inside of.

	if ($restart_sub) {
	$currentstring .= &start_sub($target, $token, $tagstack,
	$parstack, $parser, $safeeval);
	}
	if ($restart_sup) {
	$currentstring .= &start_sup($target, $token, $tagstack,
	$parstack, $parser, $safeeval);
	}
	}
return $currentstring;	return $currentstring;
}	}

Line 3054 sub end_applet {	Line 3077 sub end_applet {
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
}	}
return $currentstring;	return $currentstring;
}	}

#-- <embed> tag (end tag optional/required)	#-- <embed> tag (end tag optional/required)
sub start_embed {	sub start_embed {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);	my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
&Apache::lonxml::extlink($src);	&Apache::lonxml::extlink($src);
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
if ($env{'browser.embedsuppress'} ne 'on') {	$currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
$currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
} else {
my $alttag=&Apache::lonxml::get_param
('alt',$parstack,$safeeval,undef,1);
unless ($alttag) {
$alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
}
$currentstring='[EMBED: '.$alttag.']';
}
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
}	}
return $currentstring;	return $currentstring;
}	}

Line 3084 sub end_embed {	Line 3098 sub end_embed {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
}	# ./.
	}
return $currentstring;	return $currentstring;
}	}

#-- <param> tag (end tag forbidden)	#-- <param> tag (end tag forbidden)
sub start_param {	sub start_param {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
if (&Apache::lonxml::get_param('name',$parstack,	my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval,
$safeeval,undef,1)=~/^cabbase$/i) {	undef,1);
	if ($name =~/^cabbase$/i) {
my $value=&Apache::lonxml::get_param('value',$parstack,	my $value=&Apache::lonxml::get_param('value',$parstack,
$safeeval,undef,1);	$safeeval,undef,1);
&Apache::lonxml::extlink($value);	&Apache::lonxml::extlink($value);
}	} elsif ($name eq 'flashvars') {
	if (lc(&Apache::lonxml::get_param('type',$parstack,$safeeval,-2,1))
	eq 'application/x-shockwave-flash') {
	my $launcher =
	&Apache::lonxml::get_param('data',$parstack,$safeeval,-2,1);
	if ($launcher) {
	&Apache::lonxml::extlink($launcher);
	}
	my $flashvars=&Apache::lonxml::get_param('value',$parstack,
	$safeeval,undef,1);
	if ($flashvars ne '') {
	foreach my $item (split(/\&/,$flashvars)) {
	my ($key,$value)=split(/=/,$item,2);
	if ($key eq 'content') {
	if ($value ne '') {
	my ($dir) = ($launcher =~ m{(.+/)[^/]+$});
	&Apache::lonxml::extlink($dir.$value);
	}
	} elsif ($key eq 'thumb') {
	if ($value ne '') {
	&Apache::lonxml::extlink($value);
	}
	}
	}
	}
	}
	}
my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);	my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
&Apache::lonxml::extlink($src);	if ($src ne '') {
	&Apache::lonxml::extlink($src);
	}
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
my %toconvert;	my %toconvert;
my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
if ($src) { $toconvert{'src'}= $src; }	if ($src) { $toconvert{'src'}= $src; }
my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
undef,1);
if ($name=~/^cabbase$/i) {	if ($name=~/^cabbase$/i) {
$toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,	$toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
$safeeval,undef,1);	$safeeval,undef,1);
}	}
$currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);	$currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
}	}
return $currentstring;	return $currentstring;
}	}

Line 3123 sub end_param {	Line 3163 sub end_param {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
}	}
return $currentstring;	return $currentstring;
}	}

Line 3160 sub end_allow {	Line 3200 sub end_allow {
sub start_frameset {	sub start_frameset {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = ''; # Close any pending para.	my $currentstring = ''; # Close any pending para.
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring =	$currentstring =
&Apache::loncommon::start_page($Apache::londefdef::title,	&Apache::loncommon::start_page($Apache::londefdef::title,
$Apache::londefdef::head,	$Apache::londefdef::head,
{'add_entries' => $token->[2],	{'add_entries' => $token->[2],
'no_title' => 1,	# 'no_title' => 1,
'force_register' => 1,	'force_register' => 1,
'frameset' => 1,});	'frameset' => 1,});

Line 3190 sub start_xmp {	Line 3230 sub start_xmp {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\begin{verbatim}';	$currentstring .= '\begin{verbatim}';
}	}
return $currentstring;	return $currentstring;
}	}

Line 3214 sub start_pre {	Line 3254 sub start_pre {
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\begin{verbatim}';	$currentstring .= '\begin{verbatim}';
&Apache::lonxml::disable_LaTeX_substitutions();	&Apache::lonxml::disable_LaTeX_substitutions();
}	}
return $currentstring;	return $currentstring;
}	}

Line 3270 sub end_externallink {	Line 3310 sub end_externallink {
return $currentstring;	return $currentstring;
}	}

#-- <blankspace heigth="">	#-- <blankspace height="">
sub start_blankspace {	sub start_blankspace {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p(); # closes off any unclosed <p>	my $currentstring = &end_p(); # closes off any unclosed <p>
if ($target eq 'tex') {	if ($target eq 'tex') {
my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);	my $howmuch = &Apache::lonxml::get_param('height',$parstack,$safeeval,undef,1);
$currentstring .= '\vskip '.$howmuch.' ';	$currentstring .= '\vskip '.$howmuch.' ';
}	}
return $currentstring;	return $currentstring;
Line 3295 sub start_abbr {	Line 3335 sub start_abbr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3304 sub end_abbr {	Line 3344 sub end_abbr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3314 sub start_acronym {	Line 3354 sub start_acronym {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3323 sub end_acronym {	Line 3363 sub end_acronym {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3333 sub start_area {	Line 3373 sub start_area {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3342 sub end_area {	Line 3382 sub end_area {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3352 sub start_base {	Line 3392 sub start_base {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}
Line 3361 sub end_base {	Line 3401 sub end_base {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3371 sub start_bdo {	Line 3411 sub start_bdo {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3380 sub end_bdo {	Line 3420 sub end_bdo {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3390 sub start_bgsound {	Line 3430 sub start_bgsound {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3399 sub end_bgsound {	Line 3439 sub end_bgsound {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3409 sub start_blink {	Line 3449 sub start_blink {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3418 sub end_blink {	Line 3458 sub end_blink {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3428 sub start_blockquote {	Line 3468 sub start_blockquote {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = &end_p(); # Close any unclosed <p>	my $currentstring = &end_p(); # Close any unclosed <p>
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
}	}
if ($target eq 'tex') {	if ($target eq 'tex') {
$currentstring .= '\begin{quote}';	$currentstring .= '\begin{quote}';
}	}
Line 3440 sub end_blockquote {	Line 3480 sub end_blockquote {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
if ($target eq 'tex') {	if ($target eq 'tex') {
$currentstring = '\end{quote}';	$currentstring = '\end{quote}';
}	}
Line 3453 sub start_button {	Line 3493 sub start_button {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3462 sub end_button {	Line 3502 sub end_button {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3472 sub start_caption {	Line 3512 sub start_caption {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3481 sub end_caption {	Line 3521 sub end_caption {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3491 sub start_col {	Line 3531 sub start_col {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3500 sub end_col {	Line 3540 sub end_col {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

#-- <colgroup> tag (end tag optional)	#-- <colgroup tag (end tag optional)
sub start_colgroup {	sub start_colgroup {
my ($target,$token) = @_;	my ($target,$token,$tagstack, $parstack, $parser, $safeeval, $style) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
	if ($target eq 'tex') {
	# TODO: Ensure this tag is in a table:

	# Fetch the attributes and build the hash for the
	# call to define_colgroup.

	my $span = &Apache::lonxml::get_param('span', $parstack, $safeeval);
	my $halign = &Apache::lonxml::get_param('halign', $parstack, $safeeval);

	my %colgroup_params;
	if ($span ne '') {
	$colgroup_params{'span'} = $span;
	}
	if ($halign ne '') {
	$colgroup_params{'halign'} = $halign;
	}

	my $table = $Apache::londefdef::table[-1];
	$table->define_colgroup(\%colgroup_params);

	}
return $currentstring;	return $currentstring;
}	}

Line 3519 sub end_colgroup {	Line 3580 sub end_colgroup {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}


#-- <del> tag (end tag required)	#-- <del> tag (end tag required)
sub start_del {	sub start_del {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	} elsif ($target eq 'tex') {
	&disable_para();
	$currentstring .= '\st{';
	}
return $currentstring;	return $currentstring;
}	}

Line 3538 sub end_del {	Line 3603 sub end_del {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	} elsif ($target eq 'tex') {
	&enable_para();
	$currentstring = '}';
	}
return $currentstring;	return $currentstring;
}	}

Line 3548 sub start_fieldset {	Line 3616 sub start_fieldset {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3557 sub end_fieldset {	Line 3625 sub end_fieldset {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3567 sub start_frame {	Line 3635 sub start_frame {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3576 sub end_frame {	Line 3644 sub end_frame {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3586 sub start_iframe {	Line 3654 sub start_iframe {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	my ($src,$url,$query);
}	if ($token->[2]->{'src'}) {
	$src = $token->[2]->{'src'};
	} elsif ($token->[2]->{'SRC'}) {
	$src = $token->[2]->{'SRC'};
	}
	if ($src) {
	($url,$query) = ($src =~ /^([^?]+)\??([^?]*)$/);
	if ($query =~ /inhibitmenu=yes/) {
	$currentstring = $token->[4];
	} else {
	my $inhibit;
	if ($url =~ m{^[^/.].*\.x?html?$}) {
	$inhibit = 1;
	} elsif ($url =~ m{^/(uploaded\|res)/.*\.x?html?$}) {
	$inhibit = 1;
	}
	if ($inhibit) {
	$currentstring = '<iframe ';
	foreach my $attrib (@{$token->[3]}) {
	if (lc($attrib) eq 'src') {
	if ($query) {
	$query.='&inhibitmenu=yes';
	} else {
	$query = 'inhibitmenu=yes';
	}
	$currentstring .= 'src="'.$url.'?'.$query.'" ';
	} else {
	$currentstring .= lc($attrib).'="'.$token->[2]->{$attrib}.'" ';
	}
	}
	$currentstring =~ s/\s+$//;
	if ($token->[4] =~ m{/>$}) {
	$currentstring .= ' />';
	} else {
	$currentstring .= '>';
	}
	} else {
	$currentstring = $token->[4];
	}
	}
	if (($url !~ m{^https?://}) && ($env{'request.course.id'})) {
	my $docuri = &Apache::lonnet::hreflocation('',$env{'request.filename'});
	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
	if ($url =~ m{^([^/]\|/uploaded/)}) {
	my $cleanhref = &clean_docs_httpref($url,$docuri,$cdom,$cnum);
	if ($cleanhref) {
	&Apache::lonxml::extlink($cleanhref);
	}
	} elsif (($url =~ m{/res/$LONCAPA::domain_re/}) && ($docuri =~ m{^\Q/uploaded/$cdom/$cnum/docs/\E})) {
	if (!&Apache::lonnet::allowed('bre',$url)) {
	if (&Apache::lonnet::is_on_map($url)) {
	&Apache::lonxml::extlink($url);
	}
	}
	}
	}
	} else {
	$currentstring = $token->[4];
	}
	}
return $currentstring;	return $currentstring;
}	}

Line 3595 sub end_iframe {	Line 3723 sub end_iframe {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3605 sub start_ins {	Line 3733 sub start_ins {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3614 sub end_ins {	Line 3742 sub end_ins {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3624 sub start_isindex {	Line 3752 sub start_isindex {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3633 sub end_isindex {	Line 3761 sub end_isindex {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3643 sub start_keygen {	Line 3771 sub start_keygen {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3652 sub end_keygen {	Line 3780 sub end_keygen {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3662 sub start_label {	Line 3790 sub start_label {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3671 sub end_label {	Line 3799 sub end_label {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3681 sub start_layer {	Line 3809 sub start_layer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3690 sub end_layer {	Line 3818 sub end_layer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3700 sub start_legend {	Line 3828 sub start_legend {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3709 sub end_legend {	Line 3837 sub end_legend {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3722 sub start_link {	Line 3850 sub start_link {
my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,	my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
undef,1);	undef,1);
&Apache::lonxml::extlink($href);	&Apache::lonxml::extlink($href);
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3731 sub end_link {	Line 3859 sub end_link {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3741 sub start_marquee {	Line 3869 sub start_marquee {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3750 sub end_marquee {	Line 3878 sub end_marquee {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3760 sub start_multicol {	Line 3888 sub start_multicol {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = &end_p(); # Close any pending <p>	my $currentstring = &end_p(); # Close any pending <p>
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3769 sub end_multicol {	Line 3897 sub end_multicol {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3779 sub start_nobr {	Line 3907 sub start_nobr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring='\mbox{';	$currentstring='\mbox{';
}	}
Line 3790 sub end_nobr {	Line 3918 sub end_nobr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring='}';	$currentstring='}';
}	}
Line 3802 sub start_noembed {	Line 3930 sub start_noembed {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3811 sub end_noembed {	Line 3939 sub end_noembed {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3821 sub start_noframes {	Line 3949 sub start_noframes {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3830 sub end_noframes {	Line 3958 sub end_noframes {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3840 sub start_nolayer {	Line 3968 sub start_nolayer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3849 sub end_nolayer {	Line 3977 sub end_nolayer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3859 sub start_noscript {	Line 3987 sub start_noscript {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3868 sub end_noscript {	Line 3996 sub end_noscript {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3878 sub start_object {	Line 4006 sub start_object {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3887 sub end_object {	Line 4015 sub end_object {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3897 sub start_optgroup {	Line 4025 sub start_optgroup {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3906 sub end_optgroup {	Line 4034 sub end_optgroup {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3916 sub start_samp {	Line 4044 sub start_samp {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring='\texttt{';	$currentstring='\texttt{';
}	}
Line 3927 sub end_samp {	Line 4055 sub end_samp {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring='}';	$currentstring='}';
}	}
Line 3939 sub start_server {	Line 4067 sub start_server {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3948 sub end_server {	Line 4076 sub end_server {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3958 sub start_spacer {	Line 4086 sub start_spacer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = &end_p(); # Close off any open <p> tag.	my $currentstring = &end_p(); # Close off any open <p> tag.
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 3967 sub end_spacer {	Line 4095 sub end_spacer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

	my @span_end_stack; # for span tex target

#-- <span> tag (end tag required)	#-- <span> tag (end tag required)
sub start_span {	sub start_span {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	} elsif ($target eq 'tex') {
	my $endstring = '';
	my $family = &get_css_property('font-family',$parstack,$safeeval);
	if ($family eq 'monospace') {
	$currentstring .= '\texttt{';
	$endstring .= '}';
	}
	my $weight = &get_css_property('font-weight',$parstack,$safeeval);
	if ($weight eq 'bold') {
	$currentstring .= '\textbf{';
	$endstring .= '}';
	}
	my $style = &get_css_property('font-style',$parstack,$safeeval);
	if ($style eq 'italic') {
	$currentstring .= '\textit{';
	$endstring .= '}';
	}
	push(@span_end_stack, $endstring);
	}
return $currentstring;	return $currentstring;
}	}

Line 3986 sub end_span {	Line 4134 sub end_span {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	} elsif ($target eq 'tex') {
	my $endstring = pop @span_end_stack;
	$currentstring .= $endstring;
	}
return $currentstring;	return $currentstring;
}	}

Line 3996 sub start_tbody {	Line 4147 sub start_tbody {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
	if ($target eq 'tex') {
	# TODO: Ensure this tag is within a table:

	my $table = $Apache::londefdef::table[-1];
	$table->start_body();
	}
return $currentstring;	return $currentstring;
}	}

Line 4005 sub end_tbody {	Line 4162 sub end_tbody {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
	if($target eq 'tex') {
	# TODO: Ensure this tag is within a table:

	my $table = $Apache::londefdef::table[-1];
	$table->end_body();
	}
return $currentstring;	return $currentstring;
}	}

Line 4015 sub start_tfoot {	Line 4178 sub start_tfoot {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
	if ($target eq 'tex') {
	# TODO: ensure this is within a table tag.
	my $table = $Apache::londefdef::table[-1];
	$table->start_foot();
	}
return $currentstring;	return $currentstring;
}	}

Line 4024 sub end_tfoot {	Line 4192 sub end_tfoot {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
	if ($target eq 'tex') {
	# TODO: Ensure this is in side a table
	my $table = $Apache::londefdef::table[-1];
	$table->end_foot();
	}
return $currentstring;	return $currentstring;
}	}

Line 4034 sub start_thead {	Line 4207 sub start_thead {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
	if ($target eq 'tex') {
	# Assume we're in a table... TODO: Verify that and ignore tag if not.
	my $table = $Apache::londefdef::table[-1];
	$table->start_head();
	}
return $currentstring;	return $currentstring;
}	}

Line 4043 sub end_thead {	Line 4221 sub end_thead {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
	if ($target eq 'tex') {
	# TODO: Verify we are in a table and ignore tag if not.

	my $table = $Apache::londefdef::table[-1];
	$table->end_head();
	}
return $currentstring;	return $currentstring;
}	}

Line 4053 sub start_var {	Line 4237 sub start_var {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\textit{';	$currentstring = '\textit{';
}	}
return $currentstring;	return $currentstring;
}	}
Line 4066 sub end_var {	Line 4250 sub end_var {
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '}';	$currentstring = '}';
}	}
return $currentstring;	return $currentstring;
}	}

Line 4076 sub start_wbr {	Line 4260 sub start_wbr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 4085 sub end_wbr {	Line 4269 sub end_wbr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

Line 4094 sub end_wbr {	Line 4278 sub end_wbr {
sub start_hideweboutput {	sub start_hideweboutput {
my ($target,$token) = @_;	my ($target,$token) = @_;
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
}	}
return '';	return '';
}	}

Line 4103 sub end_hideweboutput {	Line 4287 sub end_hideweboutput {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' \|\| $target eq 'webgrade') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = &Apache::lonxml::endredirection();	$currentstring = &Apache::lonxml::endredirection();
}	}
return '';	return '';
}	}

Line 4112 sub end_hideweboutput {	Line 4296 sub end_hideweboutput {
sub image_replication {	sub image_replication {
my $src = shift;	my $src = shift;
if (not -e $src) { &Apache::lonnet::repcopy($src); }	if (not -e $src) { &Apache::lonnet::repcopy($src); }
#replicates eps or ps	#replicates eps or ps
my $epssrc = my $pssrc = $src;	my $epssrc = my $pssrc = $src;
$epssrc =~ s/\.(gif\|jpg\|jpeg\|png)$/.eps/i;	$epssrc =~ s/\.(gif\|jpg\|jpeg\|png)$/.eps/i;
$pssrc =~ s/\.(gif\|jpg\|jpeg\|png)$/.ps/i;	$pssrc =~ s/\.(gif\|jpg\|jpeg\|png)$/.ps/i;
Line 4122 sub image_replication {	Line 4306 sub image_replication {
}	}
return '';	return '';
}	}
#
# Get correct sizing parameter for an image given
# it's initial ht. and wid. This allows sizing of
# images that are generated on-the-fly (e.g. gnuplot)
# as well as serving as a utility for image_size.
#
# Parameter:
# height_param
# width_param - Initial picture dimensions.
# scaling - A scale factor.
# parstack, - the current stack of tag attributes
# from the xml parser
# safeeval, - pointer to the safespace
# depth, - from what level in the stack to look for attributes
# (assumes -1 if unspecified)
# cis - look for attrubutes case insensitively
# (assumes false)
#
# Returns:
# height, width - new dimensions.
#
sub resize_image {	sub resize_image {
my ($height_param, $width_param, $scaling,	my ($height_param, $width_param, $scaling,
$parstack, $safeeval, $depth, $cis) = @_;	$parstack, $safeeval, $depth, $cis) = @_;
Line 4153 sub resize_image {	Line 4319 sub resize_image {
$width_param = $width_param * $scaling;	$width_param = $width_param * $scaling;

#do we have any specified LaTeX size of the picture?	#do we have any specified LaTeX size of the picture?
my $toget='TeXwidth';	my $toget='TeXwidth';
if ($cis) {	if ($cis) {
$toget=lc($toget);	$toget=lc($toget);
}	}
my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,	my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
$safeeval,$depth,$cis);	$safeeval,$depth,$cis);
Line 4165 sub resize_image {	Line 4331 sub resize_image {
#do we have any specified web size of the picture?	#do we have any specified web size of the picture?
my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,	my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
$depth,1);	$depth,1);
if ($TeXwidth) {	if ($TeXwidth) {
my $old_width_param=$width_param;	my $old_width_param=$width_param;
if ($TeXwidth=~/(\d+)\s*\%/) {	if ($TeXwidth=~/(\d+)\s*\%/) {
$width_param = $1*$env{'form.textwidth'}/100;	$width_param = $1*$env{'form.textwidth'}/100;
} else {	} else {
$width_param = $TeXwidth;	$width_param = $TeXwidth;
}	}
if ($TeXheight) {	if ($TeXheight) {
Line 4178 sub resize_image {	Line 4344 sub resize_image {
$height_param=$TeXwidth/$old_width_param*$height_param;	$height_param=$TeXwidth/$old_width_param*$height_param;
}	}
} elsif ($TeXheight) {	} elsif ($TeXheight) {
$height_param = $TeXheight;
if ($height_param) {	if ($height_param) {
$width_param = $TeXheight/$height_param*$width_param;	$width_param = $TeXheight/$height_param*$width_param;
}	}
	$height_param = $TeXheight;
} elsif ($width) {	} elsif ($width) {
my $old_width_param=$width_param;	my $old_width_param=$width_param;
$width_param = $width*$scaling;	$width_param = $width*$scaling;
Line 4203 sub resize_image {	Line 4369 sub resize_image {
sub image_size {	sub image_size {
my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;	my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;

#size of image from gif/jpg/jpeg/png	#size of image from gif/jpg/jpeg/png
my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);	my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
if (-e $ressrc) {	if (-e $ressrc) {
$src = $ressrc;	$src = $ressrc;
Line 4216 sub image_size {	Line 4382 sub image_size {
undef($image);	undef($image);

($height_param, $width_param) = &resize_image($height_param, $width_param,	($height_param, $width_param) = &resize_image($height_param, $width_param,
$scaling, $parstack, $safeeval,	$scaling, $parstack, $safeeval,
$depth, $cis);	$depth, $cis);

return ($height_param, $width_param);	return ($height_param, $width_param);
Line 4245 sub get_eps_image {	Line 4411 sub get_eps_image {
&Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.	&Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
}	}
&Apache::lonxml::debug("get_eps_image: Original image: $orig_src");	&Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
my ($spath, $sname, $sext) = &fileparse($src, qr/\.(gif\|png\|jpg\|jpeg)/i);	my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp\|gif\|png\|jpg\|jpeg\|svg)/i);
$src=~s/\.(gif\|png\|jpg\|jpeg)$/\.eps/i;	$src=~s/\.(bmp\|gif\|png\|jpg\|jpeg\|svg)$/\.eps/i;
$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);	$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
&Apache::lonxml::debug("Filelocation gives: $src");	&Apache::lonxml::debug("Filelocation gives: $src");
if (! -e $src) {	if (! -e $src) {
Line 4265 sub get_eps_image {	Line 4431 sub get_eps_image {

#if replication failed try to produce eps file dynamically	#if replication failed try to produce eps file dynamically
$src=~s/\.ps$/\.eps/;	$src=~s/\.ps$/\.eps/;
my $temp_file;	if (open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat")) {
open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");	my $newsrc=$orig_src;
my $newsrc=$orig_src;	$newsrc =~ s\|(.*)/res/\|/home/httpd/html/res/\|;
$newsrc =~ s\|(.*)/res/\|/home/httpd/html/res/\|;	&Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
&Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");	print FILE ("$newsrc\n");
print FILE ("$newsrc\n");	close(FILE);
close(FILE);	}
$src=~s\|/home/httpd/html/res\|/home/httpd/prtspool\|;	$src=~s\|/home/httpd/html/res\|/home/httpd/prtspool\|;
$src=~s\|/home/([^/]*)/public_html/\|/home/httpd/prtspool/$1/\|;	$src=~s\|/home/httpd/html/priv/[^/]+/([^/]*)/\|/home/httpd/prtspool/$1/\|;
if ($sext ne "") { # Put the ext. back in to uniquify.	if ($sext ne "") { # Put the ext. back in to uniquify.
$src =~ s/\.eps$/$sext.eps/;	$src =~ s/\.eps$/$sext.eps/;
}	}
Line 4292 sub get_eps_image {	Line 4458 sub get_eps_image {
print FILE "$src\n";	print FILE "$src\n";
close FILE;	close FILE;
$src=~s\|/home/httpd/html/res\|/home/httpd/prtspool\|;	$src=~s\|/home/httpd/html/res\|/home/httpd/prtspool\|;
$src=~s\|/home/([^/]*)/public_html/\|/home/httpd/prtspool/$1/\|;	$src=~s\|/home/httpd/html/priv/[^/]+/([^/]*)/\|/home/httpd/prtspool/$1/\|;
}	}
my ($path,$file)=($src=~m\|(.)/([^/])$\|);	my ($path,$file)=($src=~m\|(.)/([^/])$\|);
$path =~ s/ /\_/g;	$path =~ s/ /\_/g;
Line 4302 sub get_eps_image {	Line 4468 sub get_eps_image {
}	}

sub eps_generation {	sub eps_generation {
my ($src,$file,$width_param) = @_;	my ($src,$file,$width_param) = @_;
my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";	my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
my $temp_file = Apache::File->new('>>'.$filename);	if (open(my $tmpfile,">>$filename")) {
print $temp_file "$src\n";	print $tmpfile "$src\n";
	close($tmpfile);
	}
my $newsrc = $src;	my $newsrc = $src;
$newsrc =~ s/(\.gif\|\.jpg\|\.jpeg)$/\.eps/i;	$newsrc =~ s/(\.bmp\|\.gif\|\.jpg\|\.jpeg)$/\.eps/i;
$newsrc=~s{/home/httpd/html/res}{};	$newsrc=~s{/home/httpd/html/res}{};
$newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};	$newsrc=~s{/home/httpd/html/priv/[^/]+/($LONCAPA::username_re)/}{/$1/};
$newsrc=~s{/\./}{/};	$newsrc=~s{/\./}{/};
$newsrc=~s{/([^/]+)\.(ps\|eps)}{/};	$newsrc=~s{/([^/]+)\.(ps\|eps)}{/};
if ($newsrc=~m{/home/httpd/lonUsers/}) {	if ($newsrc=~m{/home/httpd/lonUsers/}) {
Line 4323 sub eps_generation {	Line 4491 sub eps_generation {
}	}
}	}

sub file_path {	sub file_path {
my $src=shift;	my $src=shift;
my ($file,$path);	my ($file,$path);
if ($src =~ m!(.)/([^/])$!) {	if ($src =~ m!(.)/([^/])$!) {
$file = $2;	$file = $2;
$path = $1.'/';	$path = $1.'/';
}	}
return $file,$path;	return $file,$path;
}	}
# Converts a measurement in to mm from any of
# the other valid LaTeX units of measure.
# If the units of measure are missing from the
# parameter, it is assumed to be in and returned
# with mm units of measure
sub recalc {	sub recalc {
my $argument = shift;	my $argument = shift;
if (not $argument=~/(mm\|cm\|in\|pc\|pt)/) {return $argument.' mm';}	if (not $argument=~/(mm\|cm\|in\|pc\|pt)/) {return $argument.' mm';}
Line 4358 sub recalc {	Line 4523 sub recalc {
sub LATEX_length {	sub LATEX_length {
my $garbage=shift;	my $garbage=shift;
$garbage=~s/^\s+$//;	$garbage=~s/^\s+$//;
$garbage=~s/^\s+(\S.*)/$1/;#space before	$garbage=~s/^\s+(\S.*)/$1/;#space before
$garbage=~s/(.*\S)\s+$/$1/;#space after	$garbage=~s/(.*\S)\s+$/$1/;#space after
$garbage=~s/(\s)+/$1/;#only one space	$garbage=~s/(\s)+/$1/;#only one space
$garbage=~s/(\\begin{([^\}]+)}\|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}	$garbage=~s/(\\begin\{([^\}]+)}\|\\end\{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
$garbage=~s/(\$\_\{\|\$\_\|\$\^{\|\$\^\|\}\$)//g;#remove $_{,$_,$^{,$^,}$	$garbage=~s/(\$\_\{\|\$\_\|\$\^\{\|\$\^\|\}\$)//g;#remove $_{,$_,$^{,$^,}$
$garbage=~s/([^\\])\$/$1/g;#$	$garbage=~s/([^\\])\$/$1/g;#$
$garbage=~s/(\\ensuremath\{\_\{\|\\ensuremath\{\_\|\\ensuremath\{\^{\|\\ensuremath\{\^\|\})//g;#remove \ensuremath{...}	$garbage=~s/(\\ensuremath\{\_\{\|\\ensuremath\{\_\|\\ensuremath\{\^\{\|\\ensuremath\{\^\|\})//g;#remove \ensuremath{...}
$garbage=~s/(\\alpha\|\\beta\|\\gamma\|\\delta\|\\epsilon\|\\verepsilon\|\\zeta\|\\eta\|\\theta\|\\vartheta\|\\iota\|\\kappa\|\\lambda\|\\mu\|\\nu\|\\xi\|\\pi\|\\varpi\|\\rho\|\\varrho\|\\sigma\|\\varsigma\|\\tau\|\\upsilon\|\\phi\|\\varphi\|\\chi\|\\psi\|\\omega\|\\Gamma\|\\Delta\|\\Theta\|\\Lambda\|\\Xi\|\\Pi\|\\Sigma\|\\Upsilon\|\\Phi\|\\Psi\|\\Omega)/1/g;	$garbage=~s/(\\alpha\|\\beta\|\\gamma\|\\delta\|\\epsilon\|\\verepsilon\|\\zeta\|\\eta\|\\theta\|\\vartheta\|\\iota\|\\kappa\|\\lambda\|\\mu\|\\nu\|\\xi\|\\pi\|\\varpi\|\\rho\|\\varrho\|\\sigma\|\\varsigma\|\\tau\|\\upsilon\|\\phi\|\\varphi\|\\chi\|\\psi\|\\omega\|\\Gamma\|\\Delta\|\\Theta\|\\Lambda\|\\Xi\|\\Pi\|\\Sigma\|\\Upsilon\|\\Phi\|\\Psi\|\\Omega)/1/g;
$garbage=~s/(\\pm\|\\mp\|\\times\|\\div\|\\cdot\|\\ast\|\\star\|\\dagger\|\\ddagger\|\\amalg\|\\cap\|\\cup\|\\uplus\|\\sqcap\|\\sqcup\|\\vee\|\\wedge\|\\oplus\|\\ominus\|\\otimes\|\\circ\|\\bullet\|\\diamond\|\\lhd\|\\rhd\|\\unlhd\|\\unrhd\|\\oslash\|\\odot\|\\bigcirc\|\\Box\|\\Diamond\|\\bigtriangleup\|\\bigtriangledown\|\\triangleleft\|\\triangleright\|\\setminus\|\\wr)/1/g;	$garbage=~s/(\\pm\|\\mp\|\\times\|\\div\|\\cdot\|\\ast\|\\star\|\\dagger\|\\ddagger\|\\amalg\|\\cap\|\\cup\|\\uplus\|\\sqcap\|\\sqcup\|\\vee\|\\wedge\|\\oplus\|\\ominus\|\\otimes\|\\circ\|\\bullet\|\\diamond\|\\lhd\|\\rhd\|\\unlhd\|\\unrhd\|\\oslash\|\\odot\|\\bigcirc\|\\Box\|\\Diamond\|\\bigtriangleup\|\\bigtriangledown\|\\triangleleft\|\\triangleright\|\\setminus\|\\wr)/1/g;
$garbage=~s/(\\le\|\\ll\|\\leq\|\\ge\|\\geq\|\\gg\|\\neq\|\\doreq\|\\sim\|\\simeq\|\\subset\|\\subseteq\|\\sqsubset\|\\sqsubseteq\|\\in\|\\vdash\|\\models\|\\supset\|\\supseteq\|\\sqsupset\|\\sqsupseteq\|\\ni\|\\dash\|\\perp\|\\approx\|\\cong\|\\equiv\|\\propto\|\\prec\|\\preceq\|\\parallel\|\\asymp\|\\smile\|\\frown\|\\bowtie\|\\succ\|\\succeq\|\\mid)/1/g;	$garbage=~s/(\\le\|\\ll\|\\leq\|\\ge\|\\geq\|\\gg\|\\neq\|\\doreq\|\\sim\|\\simeq\|\\subset\|\\subseteq\|\\sqsubset\|\\sqsubseteq\|\\in\|\\vdash\|\\models\|\\supset\|\\supseteq\|\\sqsupset\|\\sqsupseteq\|\\ni\|\\dash\|\\perp\|\\approx\|\\cong\|\\equiv\|\\propto\|\\prec\|\\preceq\|\\parallel\|\\asymp\|\\smile\|\\frown\|\\bowtie\|\\succ\|\\succeq\|\\mid)/1/g;
$garbage=~s/(\\not<\|\\\\not\\le\|\\not\\prec\|\\not\\preceq\|\\not\\subset\|\\not\\subseteq\|\\not\\sqsubseteq\|\\not\\in\|\\not>\|\\not\\ge\|\\not\\succ\|\\notsucceq\|\\not\\supset\|\\notsupseteq\|\\not\\sqsupseteq\|\\notin\|\\not=\|\\not\\equiv\|\\not\\sim\|\\not\\simeq\|\\not\\approx\|\\not\\cong\|\\not\\asymp)/1/g;	$garbage=~s/(\\not<\|\\\\not\\le\|\\not\\prec\|\\not\\preceq\|\\not\\subset\|\\not\\subseteq\|\\not\\sqsubseteq\|\\not\\in\|\\not>\|\\not\\ge\|\\not\\succ\|\\notsucceq\|\\not\\supset\|\\notsupseteq\|\\not\\sqsupseteq\|\\notin\|\\not=\|\\not\\equiv\|\\not\\sim\|\\not\\simeq\|\\not\\approx\|\\not\\cong\|\\not\\asymp)/1/g;
$garbage=~s/(\\leftarrow\|\\gets\|\\Leftarrow\|\\rightarrow\|\\to\|\\Rightarrow\|\\leftrightarrow\|\\Leftrightarrow\|\\mapsto\|\\hookleftarrow\|\\leftharpoonup\|\\leftkarpoondown\|\\rightleftharpoons\|\\longleftarrow\|\\Longleftarrow\|\\longrightarrow\|\\Longrightarrow\|\\longleftrightarrow\|\\Longleftrightarrow\|\\longmapsto\|\\hookrightarrow\|\\rightharpoonup\|\\rightharpoondown\|\\uparrow\|\\Uparrow\|\\downarrow\|\\Downarrow\|\\updownarrow\|\\Updownarrow\|\\nearrow\|\\searrow\|\\swarrow\|\\nwarrow)/11/g;	$garbage=~s/(\\leftarrow\|\\gets\|\\Leftarrow\|\\rightarrow\|\\to\|\\Rightarrow\|\\leftrightarrow\|\\Leftrightarrow\|\\mapsto\|\\hookleftarrow\|\\leftharpoonup\|\\leftkarpoondown\|\\rightleftharpoons\|\\longleftarrow\|\\Longleftarrow\|\\longrightarrow\|\\Longrightarrow\|\\longleftrightarrow\|\\Longleftrightarrow\|\\longmapsto\|\\hookrightarrow\|\\rightharpoonup\|\\rightharpoondown\|\\uparrow\|\\Uparrow\|\\downarrow\|\\Downarrow\|\\updownarrow\|\\Updownarrow\|\\nearrow\|\\searrow\|\\swarrow\|\\nwarrow)/11/g;
$garbage=~s/(\\aleph\|\\hbar\|\\imath\|\\jmath\|\\ell\|\\wp\|\\Re\|\\Im\|\\mho\|\\prime\|\\emptyset\|\\nabla\|\\surd\|\\partial\|\\top\|\\bot\|\\vdash\|\\dashv\|\\forall\|\\exists\|\\neg\|\\flat\|\\natural\|\\sharp\|\\\\|\|\\angle\|\\backslash\|\\Box\|\\Diamond\|\\triangle\|\\clubsuit\|\\diamondsuit\|\\heartsuit\|\\spadesuit\|\\Join\|\\infty)/11/g;	$garbage=~s/(\\aleph\|\\hbar\|\\imath\|\\jmath\|\\ell\|\\wp\|\\Re\|\\Im\|\\mho\|\\prime\|\\emptyset\|\\nabla\|\\surd\|\\partial\|\\top\|\\bot\|\\vdash\|\\dashv\|\\forall\|\\exists\|\\neg\|\\flat\|\\natural\|\\sharp\|\\\\|\|\\angle\|\\backslash\|\\Box\|\\Diamond\|\\triangle\|\\clubsuit\|\\diamondsuit\|\\heartsuit\|\\spadesuit\|\\Join\|\\infty)/11/g;
$garbage=~s/(\\hat{([^}]+)}\|\\check{([^}]+)}\|\\dot{([^}]+)}\|\\breve{([^}]+)}\|\\acute{([^}]+)}\|\\ddot{([^}]+)}\|\\grave{([^}]+)}\|\\tilde{([^}]+)}\|\\mathring{([^}]+)}\|\\bar{([^}]+)}\|\\vec{([^}]+)})/$1/g;	$garbage=~s/(\\hat\{([^}]+)}\|\\check\{([^}]+)}\|\\dot\{([^}]+)}\|\\breve\{([^}]+)}\|\\acute\{([^}]+)}\|\\ddot\{([^}]+)}\|\\grave\{([^}]+)}\|\\tilde\{([^}]+)}\|\\mathring\{([^}]+)}\|\\bar\{([^}]+)}\|\\vec\{([^}]+)})/$1/g;
#remove some other LaTeX command	#remove some other LaTeX command
$garbage=~s\|\\(\w+)\\\|\\\|g;	$garbage=~s\|\\(\w+)\\\|\\\|g;
$garbage=~s\|\\(\w+)(\s*)\|$2\|g;	$garbage=~s\|\\(\w+)(\s*)\|$2\|g;
$garbage=~s\|\+\|11\|g;	$garbage=~s\|\+\|11\|g;
my $value=length($garbage);	my $value=length($garbage);
return $value;	return $value;
}	}


# is_inside_of $tagstack $tag	sub align_latex_image {
# This sub returns true if the current state of Xml processing	my ($align, $latex_rendering, $image, $width, $height) = @_;
# is inside of the tag.	my $currentstring; # The 1/2 wrapped image.
# Parameters:	my $closure; # The closure of the wrappage.
# tagstack - The tagstack from the parser.
# tag - The tag (without the <>'s.).	# if it's none just return it back
# Sample usage:	if ($latex_rendering eq 'none') {
# if (is_inside_of($tagstack "table")) {	return ($image,'');
# # I'm in a table....	}
# }
	# If there's an alignment specification we need to honor it here.
	# For the horizontal alignments, we will also honor the
	# value of the latex specfication. The default is parbox,
	# and that's used for illegal values too.
	#
	# Even though we set a default alignment value, the user
	# could have given us an illegal value. In that case we
	# just use the default alignment of bottom..
	$currentstring = '';
	if ($align eq "top") {
	$currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
	$closure = '}';
	} elsif (($align eq "center") \|\| ($align eq "middle")) { # Being kind
	my $offset = $height/2;
	$currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
	$closure = '}';
	} elsif ($align eq "left") {
	if ($latex_rendering eq "parpic") {
	$currentstring .= '\parpic[l]{'.$image;
	$closure = '}';
	} elsif ($latex_rendering eq "parbox") {
	$currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
	.$image;
	$closure = '\end{minipage}';
	} elsif ($latex_rendering eq "wrapfigure"
	\|\| $latex_rendering ne 'none') { # wrapfig render
	$currentstring .=
	'\begin{wrapfigure}{l}{'.$width.'mm}'
	.'\scalebox{1.0}{'.$image;
	$closure = '}\end{wrapfigure}';
	}
	} elsif ($align eq "right") {
	if ($latex_rendering eq "parpic") {
	$currentstring .= '\parpic[r]{'.$image;
	$closure = '}';
	} elsif ($latex_rendering eq "parbox") {
	$currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
	.$image;
	$closure = '\end{minipage}';
	} elsif ($latex_rendering eq "wrapfigure"
	\|\| $latex_rendering ne 'none') { # wrapfig render
	$currentstring .=
	'\begin{wrapfigure}{r}{'.$width.'mm}'
	.'\scalebox{1.0}{'.$image;
	$closure = '}\end{wrapfigure}';
	}
	} else { # Bottom is also default.
	# $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
	$currentstring .= "{$image";
	$closure = '}';
	}
	return ($currentstring, $closure);
	}


sub is_inside_of {	sub is_inside_of {
my ($tagstack, $tag) = @_;	my ($tagstack, $tag) = @_;
my @stack = @$tagstack;	my @stack = @$tagstack;
Line 4403 sub is_inside_of {	Line 4623 sub is_inside_of {
}	}


	#
	# This sub provides the typical LaTeX prefix matter for tex output:
	#
	sub latex_header {
	my ($mode) = @_;
	my $currentstring = '';

	$currentstring .=
	"\n% &Apache::lonxml::londefdef \n" .
	'\documentclass[letterpaper,twoside]{article}\raggedbottom';
	if (($env{'form.latex_type'}=~'batchmode') \|\|
	(!$env{'request.role.adv'}) \|\|
	($mode eq 'batchmode')) {$currentstring .='\batchmode';}
	$currentstring .= '\newcommand{\keephidden}[1]{}'.
	'\renewcommand{\deg}{$^{\circ}$}'.
	'\usepackage{multirow}'."\n".
	'\usepackage{longtable}'."\n".
	'\usepackage{textcomp}'."\n".
	'\usepackage{makeidx}'."\n".
	'\usepackage[dvips]{graphicx}'."\n".
	'\usepackage{wrapfig}'."\n".
	'\usepackage{picins}'."\n".
	'\usepackage[T1]{fontenc}'."\n".
	'\usepackage{lmodern}'."\n".
	'\usepackage[postscript]{ucs}'."\n".
	'\usepackage[utf8x]{inputenc}'."\n".
	'\usepackage{pifont}'."\n".
	'\usepackage{latexsym}'."\n".
	'\usepackage{epsfig}'."\n".
	'\usepackage{xtab}'."\n".
	'\usepackage{tabularx}'."\n".
	'\usepackage{booktabs}'."\n".
	'\usepackage{array}'."\n".
	'\usepackage{colortbl}'."\n".
	'\usepackage{xcolor}'."\n".
	'\usepackage{calc}'."\n".
	'\usepackage{amsmath}'."\n".
	'\usepackage{soul}'."\n".
	'\usepackage{amssymb}'."\n".
	'\usepackage{amsfonts}'."\n".
	'\usepackage{amsthm}'."\n".
	'\usepackage{amscd}'."\n".
	'\usepackage{actuarialangle}'."\n";
	if($env{'form.pdfFormFields'} eq 'yes') {
	$currentstring .= '\usepackage{hyperref}'.
	'\usepackage{eforms}'.
	'\usepackage{tabularx}';
	}

	$currentstring .= '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
	'\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
	$currentstring .= '\begin{document}';

	return $currentstring;

	}

	sub clean_docs_httpref {
	my ($href,$docuri,$cdom,$cnum) = @_;
	if ($docuri eq '') {
	$docuri = &Apache::lonnet::hreflocation('',$env{'request.filename'});
	}
	if ($cdom eq '') {
	$cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
	}
	if ($cnum eq '') {
	$cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
	}
	my $cleanhref;
	if ($docuri =~ m{^(\Q/uploaded/$cdom/$cnum/\E(?:docs\|supplemental)/)(.+/)[^/]+$}) {
	my $prefix = $1;
	my $relpath = $2;
	my ($hrefpath,$fname);
	if ($href =~ m{^/}) {
	if ($href =~ m{^\Q$prefix\E(.+/)([^/]+)$}) {
	$hrefpath = $1;
	$fname = $2;
	} else {
	return $cleanhref;
	}
	} else {
	if ($href =~ m{/}) {
	(my $path,$fname) = ($href =~ m{^(.)/([^/])$});
	$hrefpath = $relpath.$path;
	if ($path eq '') {
	$hrefpath =~ s{/$}{};
	}
	} else {
	$fname = $href;
	$hrefpath = $relpath;
	$hrefpath =~ s{/$}{};
	}
	}
	if ($fname ne '') {
	my $cleanrelpath;
	foreach my $dir (split(/\//,$hrefpath)) {
	next if ($dir eq '.');
	if ($dir eq '..') {
	$cleanrelpath =~ s{([^/]+/)$}{};
	} else {
	$cleanrelpath .= $dir.'/';
	}
	}
	if ($cleanrelpath ne '') {
	$cleanhref = $prefix.$cleanrelpath.$fname;
	} else {
	$cleanhref = $prefix.$fname;
	}
	}
	}
	return $cleanhref;
	}

	# This is retrieving a CSS property from the style attribute of the current element.
	# It is not checking <style> elements or linked stylesheets yet.
	sub get_css_property {
	my ($property,$parstack,$safeeval) = @_;
	my $style=&Apache::lonxml::get_param('style',$parstack,$safeeval,undef,1);
	my @style_components=split(/;/,$style);
	foreach my $css_pair (@style_components) {
	my ($name, $value) = split(/:/, $css_pair);
	$name =~ s/^\s+\|\s+$//g;
	$value =~ s/^\s+\|\s+$//g;
	if ($name eq $property) {
	return $value;
	}
	}
	return undef;
	}

	=pod

	=head1 NAME

	Apache::londefdef.pm

	=head1 SYNOPSIS

	Tags Default Definition Module

	This is part of the LearningOnline Network with CAPA project
	described at http://www.lon-capa.org.


	=head1 NOTABLE SUBROUTINES

	=over

	=item start_hideweboutput()

	=item end_hideweboutput()

	=item image_replication()

	=item resize_image()

	Get correct sizing parameter for an image given
	it's initial ht. and wid. This allows sizing of
	images that are generated on-the-fly (e.g. gnuplot)
	as well as serving as a utility for image_size.

	Parameter:
	height_param
	width_param - Initial picture dimensions.
	scaling - A scale factor.
	parstack, - the current stack of tag attributes
	from the xml parser
	safeeval, - pointer to the safespace
	depth, - from what level in the stack to look for attributes
	(assumes -1 if unspecified)
	cis - look for attrubutes case insensitively
	(assumes false)

	Returns:
	height, width - new dimensions.

	=item image_size()

	=item image_width()

	=item image_height()

	=item get_eps_image()

	=item eps_generation()

	=item file_path()

	=item recalc()

	Converts a measurement in to mm from any of
	the other valid LaTeX units of measure.
	If the units of measure are missing from the
	parameter, it is assumed to be in and returned
	with mm units of measure

	=item LATEX_length()

	=item align_latex_image()

	Wrap image 'stuff' inside of the LaTeX required to implement
	alignment:
	align_tex_image(align, latex_rendering, image)
	Where:
	align - The HTML alignment specification.
	latex_rendering - rendering hint for latex.
	image - The LaTeX needed to insert the image itsef.
	width,height - dimensions of the image.
	Returns:
	The 1/2 wrapped image and the stuff required to close the
	wrappage. This allows e.g. randomlabel to insert more stuff
	into the closure.


	=item is_inside_of($tagstack, $tag)
	This sub returns true if the current state of Xml processing is inside of the tag.
	Parameters:
	tagstack - The tagstack from the parser.
	tag - The tag (without the <>'s.).
	Sample usage:
	if (is_inside_of($tagstack "table")) {
	I'm in a table....
	}

	=item clean_docs_httpref($href,$docuri,$cdom,$cnum)
	HTML pages uploaded to a course which contain dependencies either from iframes,
	javascript files or objects (FlashPlayerSwf, MediaSrc, XMPSrc, ConfigurationSrc,
	and PosterImageSrc) for which dependency is another file uploaded to the same
	course.

	Required input:
	href - dependency (either a relative URL, or an absolute URL)
	Optional inputs:
	docuri - URL of HTML page containing the dependency
	cdom - Course domain
	cnum - CourseID

	Output:
	returns an absolute URL constructed from the href provided, and the calling context.
	(this will be null, if the URL does not begin: /uploaded/$cdom/$cnum/docs/ or
	/uploaded/$cdom/$cnum/supplemental/).

	=back

	=cut


1;	1;
__END__	__END__

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.348
changed lines
	Added in v.1.475