loncom/xml/londefdef.pm - diff

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Diff for /loncom/xml/londefdef.pm between versions 1.253 and 1.444

version 1.253, 2005/02/09 15:47:06	version 1.444, 2013/06/04 22:20:20
Line 39	Line 39

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 LONCAPA();
	# 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'));

}	}


sub initialize_londefdef {	sub initialize_londefdef {
$Apache::londefdef::TD_redirection=0;	$Apache::londefdef::TD_redirection=0;
@Apache::londefdef::table = ();	@Apache::londefdef::table = ();
Line 64 sub initialize_londefdef {	Line 69 sub initialize_londefdef {
@Apache::londefdef::DT=(0);	@Apache::londefdef::DT=(0);
@Apache::londefdef::seenDT=(0);	@Apache::londefdef::seenDT=(0);
$Apache::londefdef::list_index=0;	$Apache::londefdef::list_index=0;
	undef($Apache::londefdef::head);
	undef($Apache::londefdef::title);
}	}

#======================= TAG SUBROUTINES =====================	#======================= TAG SUBROUTINES =====================
Line 84 sub start_m {	Line 91 sub start_m {
my $currentstring = '';	my $currentstring = '';
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') {
$inside ='\\documentstyle{article}'.$inside;
&Apache::lonxml::debug("M is starting with:$inside:");	&Apache::lonxml::debug("M is starting with:$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') {
$inside=&Apache::run::evaluate($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:");
}	}
$currentstring = &Apache::lontexconvert::converted(\$inside);	my $tex = $inside;
	my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
	$currentstring = &Apache::lontexconvert::converted(\$inside,$display);
if ($Apache::lontexconvert::errorstring) {	if ($Apache::lontexconvert::errorstring) {
&Apache::lonxml::warning("tth error: ".	my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occurred while attempting to convert this TeX: <pre>';
$Apache::lontexconvert::errorstring);	$tex = &HTML::Entities::encode($tex,'<>&"');
	my ($linenumber) =
	($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
	if (defined($linenumber)) {
	my @tex=split("\n",$tex);
	$tex[$linenumber]='<b><font color="red">'.
	$tex[$linenumber].'</font></b>';
	$tex=join("\n",@tex);
	}
	&Apache::lonxml::warning($errormsg.$tex.'</pre>');
$Apache::lontexconvert::errorstring='';	$Apache::lontexconvert::errorstring='';
}	}
#&Apache::lonxml::debug("M is ends with:$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') {
$currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);	$currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
}	}
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
	# to use \ensuremath ... unless there's a \verb inside.
	if (! ($currentstring=~/\\verb/)) {
	if ($currentstring=~/^\s\$[^\$].\$\s*$/) {
	$currentstring=~s/^(\s*)\$/$1/;
	$currentstring=~s/\$(\s*)$/$1/;
	$currentstring='\ensuremath{'.$currentstring.'}';
	}
	}
$Apache::lonxml::post_evaluate=0;	$Apache::lonxml::post_evaluate=0;
}	}
return $currentstring;	return $currentstring;
Line 121 sub end_m {	Line 148 sub end_m {
}	}

sub start_tthoption {	sub start_tthoption {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
my $result;	my $result;
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);	my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
	$style);
$inside=~s/^\s*//;	$inside=~s/^\s*//;
if ($ENV{'browser.mathml'}) {	if ($env{'browser.mathml'}) {
&tth::ttmoptions($inside);	&tth::ttmoptions($inside);
} else {	} else {
&tth::tthoptions($inside);	&tth::tthoptions($inside);
Line 145 sub end_tthoption {	Line 173 sub end_tthoption {
sub start_html {	sub start_html {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};	if ($target eq 'web' \|\| $target eq 'edit' \|\| $target eq 'webgrade' ) {
&Apache::lontexconvert::init_tth();	# start_body() takes care of emitting the <html>
if ($target eq 'web' \|\| $target eq 'edit') {	} elsif ($target eq 'tex') {
$currentstring = &Apache::lonxml::xmlbegin();
} elsif ($target eq 'tex') {	$currentstring .= &latex_header();
@Apache::londefdef::table = ();
$currentstring .= '\documentclass[letterpaper]{article}';
if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
$currentstring .= '\newcommand{\keephidden}[1]{}'.
'\renewcommand{\deg}{$^{\circ}$}'.
'\usepackage{longtable}'.
'\usepackage{textcomp}'.
'\usepackage{makeidx}'.
'\usepackage[dvips]{graphicx}'.
'\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 $currentstring;
}	}
Line 176 sub start_html {	Line 185 sub start_html {
sub end_html {	sub end_html {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = &Apache::lonxml::xmlend($target,$parser);	# end_body takes care of the </html>
}	}
return $currentstring;	return $currentstring;
}	}
Line 186 sub end_html {	Line 195 sub end_html {
sub start_head {	sub start_head {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4].&Apache::lonxml::fontsettings();	&Apache::lonxml::startredirection();
}	}
return $currentstring;	return $currentstring;
}	}
Line 195 sub start_head {	Line 204 sub start_head {
sub end_head {	sub end_head {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web' && $ENV{'request.state'} eq 'published') {	if (($target eq 'web' && $env{'request.state'} eq 'published') \|\|
$currentstring = &Apache::lonmenu::registerurl(undef,$target).	($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
$token->[2];	# in case there is a </head> but no <head>
	if ($Apache::lonxml::redirection) {
	$Apache::londefdef::head = &Apache::lonxml::endredirection();
	}
}	}
return $currentstring;	return $currentstring;
}	}
Line 206 sub end_head {	Line 218 sub end_head {
sub start_map {	sub start_map {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 215 sub start_map {	Line 227 sub start_map {
sub end_map {	sub end_map {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 225 sub end_map {	Line 237 sub end_map {
sub start_select {	sub start_select {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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;	$Apache::londefdef::select=0;
Line 236 sub start_select {	Line 248 sub start_select {
sub end_select {	sub end_select {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 246 sub end_select {	Line 258 sub end_select {
sub start_option {	sub start_option {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$Apache::londefdef::select++;	$Apache::londefdef::select++;
Line 262 sub start_option {	Line 274 sub start_option {
sub end_option {	sub end_option {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring='}';	$currentstring='}';
Line 274 sub end_option {	Line 286 sub end_option {
sub start_input {	sub start_input {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 283 sub start_input {	Line 295 sub start_input {
sub end_input {	sub end_input {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 293 sub end_input {	Line 305 sub end_input {
sub start_textarea {	sub start_textarea {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 302 sub start_textarea {	Line 314 sub start_textarea {
sub end_textarea {	sub end_textarea {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 312 sub end_textarea {	Line 324 sub end_textarea {
sub start_form {	sub start_form {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 321 sub start_form {	Line 333 sub start_form {
sub end_form {	sub end_form {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 329 sub end_form {	Line 341 sub end_form {

#-- <title> tag (end tag required)	#-- <title> tag (end tag required)
sub start_title {	sub start_title {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$Apache::londefdef::title =
	&Apache::lonxml::get_all_text('/title',$parser,$style);
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\keephidden{Title of the document: '	$currentstring .= '\keephidden{Title of the document: '
}	}
Line 346 sub start_title {	Line 359 sub start_title {
sub end_title {	sub end_title {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	# start_title takes care of swallowing the title
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
}	}
Line 360 sub end_title {	Line 373 sub end_title {

#-- <meta> tag (end tag forbidden)	#-- <meta> tag (end tag forbidden)
sub start_meta {	sub start_meta {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
my $args='';	my $args='';
if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }	if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
if ($args eq '') {	if ($args eq '') {
&Apache::lonxml::get_all_text("/meta",$parser);	&Apache::lonxml::get_all_text("/meta",$parser,$style);
} 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 404 sub start_meta {	Line 420 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 $currentstring;
}	}
Line 411 sub start_meta {	Line 437 sub start_meta {
sub end_meta {	sub end_meta {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
my $args='';	my $args='';
if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }	if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
if ($args ne '') {	if ($args ne '') {
Line 427 sub end_meta {	Line 453 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) = @_;	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]; }
if ($args eq '') {	if ($args eq '') {
&Apache::lonxml::get_all_text("/accessrule",$parser);	&Apache::lonxml::get_all_text("/accessrule",$parser,$style);
} else {	} else {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
}	}
if ($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 472 sub end_accessrule {	Line 539 sub end_accessrule {
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) = @_;
my $currentstring = '';	my $currentstring = '';

if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
if ($Apache::lonhomework::parsing_a_problem) {	if ($Apache::lonhomework::parsing_a_problem) {
&Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");	&Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
return '';	return '';
}	}
if (!$Apache::lonxml::registered &&
$ENV{'request.state'} eq 'published') {
$currentstring.='<head>'.
&Apache::lonmenu::registerurl(undef,$target).'</head>';
}
# Accessibility
if ($ENV{'browser.imagesuppress'} eq 'on') {
delete($token->[2]->{'background'});
}
if ($ENV{'browser.fontenhance'} eq 'on') {
my $style='';
foreach my $key (keys(%{$token->[2]})) {
if ($key =~ /^style$/i) {
$style.=$token->[2]->{$key}.';';
delete($token->[2]->{$key});
}
}
$token->[2]->{'style'}=$style.'; font-size: x-large;';
}
if ($ENV{'browser.blackwhite'} eq 'on') {
delete($token->[2]->{'font'});
delete($token->[2]->{'link'});
delete($token->[2]->{'alink'});
delete($token->[2]->{'vlink'});
delete($token->[2]->{'bgcolor'});
delete($token->[2]->{'background'});
}
# Overload loads
my $onLoad='';
foreach my $key (keys(%{$token->[2]})) {
if ($key =~ /^onload$/i) {
$onLoad.=$token->[2]->{$key}.';';
delete($token->[2]->{$key});
}
}
$token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
my $onUnload='';
foreach my $key (keys(%{$token->[2]})) {
if ($key =~ /^onunload$/i) {
$onUnload.=$token->[2]->{$key}.';';
delete($token->[2]->{$key});
}
}
$token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
';'.$onUnload;

if ($ENV{'request.state'} ne 'construct') {	if (&is_inside_of($tagstack, "head")) {
$currentstring .= '<'.$token->[1];	&end_head(@_);
}
foreach (keys %{$token->[2]}) {
$currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
}
if ($ENV{'request.state'} ne 'construct') {
$currentstring.='>';
}	}
if ($ENV{'request.state'} ne 'published') {
my $remote=($ENV{'environment.remote'} ne 'off');	my $extra_head = &generate_css_links();
$currentstring=&Apache::loncommon::bodytag(undef,undef,
$currentstring,$remote);	# Breadcrumbs
$currentstring.=(<<EDITBUTTON);	&Apache::lonhtmlcommon::clear_breadcrumbs();
<form method="post">	if ($env{'request.state'} eq 'construct') {
<input type="submit" name="editmode" accesskey="e" value="Edit" />	my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
</form>	&Apache::lonhtmlcommon::add_breadcrumb({
EDITBUTTON	'text' => 'Authoring Space',
} else {	'href' => &Apache::loncommon::authorspace($url),
$currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);	});
}	&Apache::lonhtmlcommon::add_breadcrumb({
$currentstring.=&Apache::lonxml::message_location();	'text' => 'HTML Editor',
	'href' => '',
	});
	# breadcrumbs (and tools) will be created
	# in start_page->bodytag->innerregister
	} else {
	# FIXME Where are we?
	}

	$currentstring =
	&Apache::loncommon::start_page($Apache::londefdef::title,
	$Apache::londefdef::head
	.$extra_head,
	{'add_entries' => $token->[2],
	# 'no_title' => 1,
	'force_register' => 1});

	my $header = '';
	if ($env{'request.state'} ne 'published' &&
	$env{'request.state'} ne 'construct') {
	$header=&Apache::lonmenu::constspaceform();
	}
	if ($env{'request.state'} ne 'published') {
	$header.=&edit_controls();
	}
	if ($env{'request.state'} eq 'construct') {
	$currentstring.=&Apache::loncommon::head_subbox(
	&Apache::loncommon::CSTR_pageheader()
	.$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 $result .= '
	<form method="post" action="">
	<div class="LC_edit_problem_header">';
	unless ($nochgview) {
	$result .= '
	<div class="LC_edit_problem_header_row1">'.
	&Apache::lonxml::renderingoptions().'
	<input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
	</div>';
	}
	$result .= '
	<div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
	if (($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 ($env{'request.filename'} =~ m{/userfiles/supplemental/default\|\d+/}) {
	if (&Apache::lonnet::is_course_upload($env{'request.filename'},
	$cnum,$cdom)) {
	&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
	['folderpath','title']);
	}
	}
	}
	my ($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>
	';
	return $result;
	}

sub end_body {	sub end_body {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close off unclosed <p>
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
} elsif ($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
	# of a table cell. Same at the end of a \center but with a slightly
	# larger space .. hence center_correction and center_end_correction.
	#
	sub center_correction { return '\vspace*{-6 mm}'; }
	sub center_end_correction { return '\vspace*{-7 mm}'; }

#-- <center> tag (end tag required)	#-- <center> tag (end tag required)
sub start_center {	sub start_center {
my ($target,$token) = @_;	my ($target,$token,$tagstack) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close off any prior para.
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\begin{center}';	if (&is_inside_of($tagstack, "table")) {
	$currentstring .= &center_correction();
	}
	$currentstring .= '\begin{center}';
}	}
return $currentstring;	return $currentstring;
}	}

sub end_center {	sub end_center {
my ($target,$token) = @_;	my ($target,$token,$tagstack) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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")) {
	$currentstring .= &center_end_correction();
	}
}	}
return $currentstring;	return $currentstring;
}	}

#-- <b> tag (end tag required)	#-- <b> tag (end tag required)
	# NOTE: In TeX mode disables internal <p>
sub start_b {	sub start_b {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\textbf{';	&disable_para();
	$currentstring .= '\textbf{';
}	}
return $currentstring;	return $currentstring;
}	}
Line 605 sub start_b {	Line 736 sub start_b {
sub end_b {	sub end_b {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '}';	&enable_para();
	$currentstring = '}';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <strong> tag (end tag required)	#-- <strong> tag (end tag required)
	# NOTE: in TeX mode disables internal <p>
sub start_strong {	sub start_strong {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
	&disable_para();
$currentstring = '\textbf{';	$currentstring = '\textbf{';
}	}
return $currentstring;	return $currentstring;
Line 628 sub start_strong {	Line 762 sub start_strong {
sub end_strong {	sub end_strong {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
	&enable_para();
$currentstring = '}';	$currentstring = '}';
}	}
return $currentstring;	return $currentstring;
Line 639 sub end_strong {	Line 774 sub end_strong {
#-- <h1> tag (end tag required)	#-- <h1> tag (end tag required)
sub start_h1 {	sub start_h1 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close off any prior para.
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $pre;	my $pre;
Line 654 sub start_h1 {	Line 789 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 .= $pre.'{\\'.$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);
}	}
return $currentstring;	return $currentstring;
Line 665 sub start_h1 {	Line 800 sub start_h1 {
sub end_h1 {	sub end_h1 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';	my $post='\vskip 0 mm ';
Line 688 sub end_h1 {	Line 823 sub end_h1 {
#-- <h2> tag	#-- <h2> tag
sub start_h2 {	sub start_h2 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close off any prior para.
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $pre;	my $pre;
Line 703 sub start_h2 {	Line 838 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 .= $pre.'{\\'.$TeXsize.' \textbf{';	$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}
Line 711 sub start_h2 {	Line 846 sub start_h2 {
sub end_h2 {	sub end_h2 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';	my $post='\vskip 0 mm ';
Line 731 sub end_h2 {	Line 866 sub end_h2 {
#-- <h3> tag	#-- <h3> tag
sub start_h3 {	sub start_h3 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close off any prior para.
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $pre;	my $pre;
Line 746 sub start_h3 {	Line 881 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 .= $pre.'{\\'.$TeXsize.' \textbf{';	$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}
Line 754 sub start_h3 {	Line 889 sub start_h3 {
sub end_h3 {	sub end_h3 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';	my $post='\vskip 0 mm ';
Line 774 sub end_h3 {	Line 909 sub end_h3 {
#-- <h4> tag	#-- <h4> tag
sub start_h4 {	sub start_h4 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close off any prior para.
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $pre;	my $pre;
Line 789 sub start_h4 {	Line 924 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 .= $pre.'{\\'.$TeXsize.' \textbf{';	$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}
Line 797 sub start_h4 {	Line 932 sub start_h4 {
sub end_h4 {	sub end_h4 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';	my $post='\vskip 0 mm ';
Line 817 sub end_h4 {	Line 952 sub end_h4 {
#-- <h5> tag	#-- <h5> tag
sub start_h5 {	sub start_h5 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close off any prior paras.
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $pre;	my $pre;
Line 832 sub start_h5 {	Line 967 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 .= $pre.'{\\'.$TeXsize.' \textbf{';	$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}
Line 840 sub start_h5 {	Line 975 sub start_h5 {
sub end_h5 {	sub end_h5 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';	my $post='\vskip 0 mm ';
Line 860 sub end_h5 {	Line 995 sub end_h5 {
#-- <h6> tag	#-- <h6> tag
sub start_h6 {	sub start_h6 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close off any prior paras.
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $pre;	my $pre;
Line 875 sub start_h6 {	Line 1010 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 .= $pre.'{\\'.$TeXsize.' \textbf{';	$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}
Line 883 sub start_h6 {	Line 1018 sub start_h6 {
sub end_h6 {	sub end_h6 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';	my $post='\vskip 0 mm ';
Line 904 sub end_h6 {	Line 1039 sub end_h6 {
sub start_cite {	sub start_cite {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\textit{';	$currentstring .= '\textit{';
Line 915 sub start_cite {	Line 1050 sub start_cite {
sub end_cite {	sub end_cite {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
Line 927 sub end_cite {	Line 1062 sub end_cite {
sub start_i {	sub start_i {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\textit{';	$currentstring .= '\textit{';
Line 938 sub start_i {	Line 1073 sub start_i {
sub end_i {	sub end_i {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
Line 950 sub end_i {	Line 1085 sub end_i {
sub start_address {	sub start_address {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\textit{';	$currentstring .= '\textit{';
Line 961 sub start_address {	Line 1096 sub start_address {
sub end_address {	sub end_address {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
Line 973 sub end_address {	Line 1108 sub end_address {
sub start_dfn {	sub start_dfn {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\textit{';	$currentstring .= '\textit{';
Line 984 sub start_dfn {	Line 1119 sub start_dfn {
sub end_dfn {	sub end_dfn {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
Line 996 sub end_dfn {	Line 1131 sub end_dfn {
sub start_tt {	sub start_tt {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\texttt{';	$currentstring .= '\texttt{';
Line 1007 sub start_tt {	Line 1142 sub start_tt {
sub end_tt {	sub end_tt {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
Line 1019 sub end_tt {	Line 1154 sub end_tt {
sub start_kbd {	sub start_kbd {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\texttt{';	$currentstring .= '\texttt{';
Line 1030 sub start_kbd {	Line 1165 sub start_kbd {
sub end_kbd {	sub end_kbd {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
Line 1042 sub end_kbd {	Line 1177 sub end_kbd {
sub start_code {	sub start_code {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\texttt{';	$currentstring .= '\texttt{';
Line 1053 sub start_code {	Line 1188 sub start_code {
sub end_code {	sub end_code {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
Line 1065 sub end_code {	Line 1200 sub end_code {
sub start_em {	sub start_em {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\emph{';	$currentstring .= '\emph{';
Line 1076 sub start_em {	Line 1211 sub start_em {
sub end_em {	sub end_em {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
Line 1088 sub end_em {	Line 1223 sub end_em {
sub start_q {	sub start_q {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\emph{';	$currentstring .= '\emph{';
Line 1099 sub start_q {	Line 1234 sub start_q {
sub end_q {	sub end_q {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
Line 1107 sub end_q {	Line 1242 sub end_q {
return $currentstring;	return $currentstring;
}	}

	# <p> is a bit strange since it does not require a closing </p>
	# However in latex, we must often output closing stuff to end
	# environments and {}'s etc. Therefore we do all the work
	# of figuring out the ending strings in the start tag processing,
	# and provide a mechanism to output the stop text external
	# to tag processing.
	#
	{

	my $closing_string = ''; # String required to close <p>

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

	my $para_disabled = 0;

	sub disable_para {
	$para_disabled++;
	}
	sub enable_para {
	$para_disabled--;
	}


#-- <p> tag (end tag optional)	#-- <p> tag (end tag optional)
#optional attribute - align="center\|left\|right"	#optional attribute - align="center\|left\|right"
sub start_p {	sub start_p {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
	$currentstring .= &end_p(); # close off prior para if in progress.
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	if (! ($currentstring =~ /\//)) {
	$closing_string = '</p>'; # Deal correctly with <p /> e.g.
	}
	} elsif ($target eq 'tex' && !$para_disabled) {

	$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,$safeeval,undef,1);
if ($align eq 'center') {	if ($align eq 'center') {
$currentstring='\begin{center}\par';	$currentstring .='\begin{center}\par ';
	$closing_string = '\end{center}';
	if (&is_inside_of($tagstack, "table")) {
	$currentstring = &center_correction().$currentstring;
	}
} elsif ($align eq 'right') {	} elsif ($align eq 'right') {
$currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';	$currentstring.="\n".'{\flushright ';
	# $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
	$closing_string= "}\n";
} elsif ($align eq 'left') {	} elsif ($align eq 'left') {
$currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';	$currentstring.= "\n".'{\flushleft ';
	# $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
	$closing_string = "}\n";
} else {	} else {
$currentstring='\par ';	$currentstring.='\par ';
	if (&is_inside_of($tagstack, 'table')) {
	$closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
	} else {
	$closing_string = '\strut\\\\\strut ';
	}
}	}
my $signal=1;#<p> does not work inside <b>...</b>
foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
if (!$signal) {$currentstring = '';}
}
}	}
return $currentstring;	return $currentstring;
}	}
	#
	# End paragraph processing just requires that we output the
	# closing string that was saved and blank it.
sub end_p {	sub end_p {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	# Note only 'tex' mode uses disable_para and enable_para
my $currentstring = '';	# so we don't need to know the target in the check below:
if ($target eq 'web') {
$currentstring .= $token->[2];	if (!$para_disabled) {
} elsif ($target eq 'tex') {	my $current_string = $closing_string;
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);	$closing_string = ''; # Not in a para anymore.
if (not defined $align) {	return $current_string;
$currentstring.='\strut\\\\\strut ';	} else {
} elsif ($align eq 'center') {	return '';
$currentstring .= '\end{center}';
} elsif ($align eq 'right') {
$currentstring .= '}}';
} elsif ($align eq 'left') {
$currentstring .= '}\hfill}';
}
}	}
return $currentstring;
}

	}
	}
#-- <br> tag (end tag forbidden)	#-- <br> tag (end tag forbidden)
sub start_br {	sub start_br {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my @tempo=@$tagstack;	my @tempo=@$tagstack;
my $signal=0;	my $signal=0;
	# Not going to factor this to is_inside_of since that would require
	# multiple stack traversals.
	#
for (my $i=$#tempo;$i>=0;$i--) {	for (my $i=$#tempo;$i>=0;$i--) {
if (($tempo[$i] eq 'b') \|\| ($tempo[$i] eq 'strong') \|\|	if (($tempo[$i] eq 'b') \|\| ($tempo[$i] eq 'strong') \|\|
($tempo[$i] eq 'ol') \|\| ($tempo[$i] eq 'ul') \|\|	($tempo[$i] eq 'ol') \|\| ($tempo[$i] eq 'ul')) {
($tempo[$i] eq 'td') \|\| ($tempo[$i] eq 'th')) {
$signal=1;	$signal=1;
last;	}
	if (($tempo[$i] eq 'td') \|\| ($tempo[$i] eq 'th')) {
	$signal = 1;
}	}
}	}
if ($signal) {	if ($signal != 1) {
$currentstring .= ' \vskip 0 mm ';
} elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
$currentstring .= '\strut \\\\ \strut ';	$currentstring .= '\strut \\\\ \strut ';
}	}

}	}
return $currentstring;	return $currentstring;
}	}
Line 1182 sub start_br {	Line 1358 sub start_br {
sub end_br {	sub end_br {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 1192 sub end_br {	Line 1368 sub end_br {
sub start_big {	sub start_big {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '{\large ';	$currentstring .= '{\large ';
Line 1203 sub start_big {	Line 1379 sub start_big {
sub end_big {	sub end_big {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
Line 1215 sub end_big {	Line 1391 sub end_big {
sub start_small {	sub start_small {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '{\footnotesize ';	$currentstring .= '{\footnotesize ';
Line 1226 sub start_small {	Line 1402 sub start_small {
sub end_small {	sub end_small {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
Line 1238 sub end_small {	Line 1414 sub end_small {
sub start_basefont {	sub start_basefont {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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,$safeeval);
Line 1252 sub start_basefont {	Line 1428 sub start_basefont {
sub end_basefont {	sub end_basefont {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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,$safeeval);
Line 1267 sub end_basefont {	Line 1443 sub end_basefont {
sub start_font {	sub start_font {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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) {
if (($ENV{'browser.fontenhance'} eq 'on') \|\|
($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
}
$currentstring = $token->[4];	$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,$safeeval);
Line 1286 sub start_font {	Line 1458 sub start_font {
sub end_font {	sub end_font {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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,$safeeval);
Line 1301 sub end_font {	Line 1473 sub end_font {
sub start_strike {	sub start_strike {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
Line 1312 sub start_strike {	Line 1484 sub start_strike {
sub end_strike {	sub end_strike {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring=&Apache::lonxml::endredirection();	$currentstring=&Apache::lonxml::endredirection();
Line 1327 sub end_strike {	Line 1499 sub end_strike {
sub start_s {	sub start_s {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
Line 1338 sub start_s {	Line 1510 sub start_s {
sub end_s {	sub end_s {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring=&Apache::lonxml::endredirection();	$currentstring=&Apache::lonxml::endredirection();
Line 1353 sub end_s {	Line 1525 sub end_s {
sub start_sub {	sub start_sub {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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 $currentstring;
}	}
Line 1364 sub start_sub {	Line 1536 sub start_sub {
sub end_sub {	sub end_sub {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}}';	$currentstring .= '}}';
Line 1376 sub end_sub {	Line 1548 sub end_sub {
sub start_sup {	sub start_sup {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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 $currentstring;
}	}
Line 1387 sub start_sup {	Line 1559 sub start_sup {
sub end_sup {	sub end_sup {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}}';	$currentstring .= '}}';
Line 1398 sub end_sup {	Line 1570 sub end_sup {
#-- <hr> tag (end tag forbidden)	#-- <hr> tag (end tag forbidden)
sub start_hr {	sub start_hr {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # End enclosing para.
if ($target eq 'web') {	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 1422 sub start_hr {	Line 1615 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 $currentstring;
}	}
Line 1429 sub start_hr {	Line 1632 sub start_hr {
sub end_hr {	sub end_hr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

#-- <div> tag (end tag required)	#-- <div> tag (end tag required)
	{

	# Since div can be nested, the stack below is used
	# in 'tex' mode to store the ending strings
	# for the div stack.

	my @div_end_stack;

sub start_div {	sub start_div {
my ($target,$token) = @_;	my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close enclosing para.
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
}	}
	if ($target eq 'tex') {
	# 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 $align = lc(&Apache::lonxml::get_param('align', $parstack,
	$safeeval, undef, 1));
	if ($align eq 'center') {
	$currentstring .= '\begin{center}';
	$endstring = '\end{center}';
	if (&is_inside_of($tagstack, "table")) {
	$currentstring = &center_correction().$currentstring;
	$endstring .= &center_end_correction();
	}
	}
	elsif ($align eq 'right') {
	$currentstring .= '\begin{flushright}';
	$endstring .= '\end{flushright}';
	} elsif ($align eq 'left') {
	$currentstring .= '\begin{flushleft}';
	$endstring = '\end{flushleft}';
	} else {

	}
	$currentstring .= "\n"; # For human readability.
	$endstring = "\n$endstring\n"; # For human readability
	push(@div_end_stack, $endstring);
	}
return $currentstring;	return $currentstring;
}	}

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

#-- <a> tag (end tag required)	#-- <a> tag (end tag required)
sub start_a {	sub start_a {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
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);
	}
	}
	}
	}
	}
}	}
return $currentstring;	return $currentstring;
}	}
Line 1480 sub start_a {	Line 1736 sub start_a {
sub end_a {	sub end_a {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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 1490 sub end_a {	Line 1768 sub end_a {
sub start_li {	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') {	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);
Line 1520 sub start_li {	Line 1798 sub start_li {

sub end_li {	sub end_li {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # In case there's a <p> in the <li>
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring .= $token->[2];
}	}
return $currentstring;	return $currentstring;
}	}
Line 1531 sub end_li {	Line 1809 sub end_li {
sub start_u {	sub start_u {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
Line 1542 sub start_u {	Line 1820 sub start_u {
sub end_u {	sub end_u {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring=&Apache::lonxml::endredirection();	$currentstring=&Apache::lonxml::endredirection();
Line 1556 sub end_u {	Line 1834 sub end_u {
#-- <ul> tag (end tag required)	#-- <ul> tag (end tag required)
sub start_ul {	sub start_ul {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close off enclosing list.
if ($target eq 'web') {	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;	$Apache::londefdef::list_index=0;
Line 1586 sub start_ul {	Line 1864 sub start_ul {
sub end_ul {	sub end_ul {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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$}'.
Line 1601 sub end_ul {	Line 1879 sub end_ul {
sub start_menu {	sub start_menu {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\begin{itemize} ";	$currentstring = " \\begin{itemize} ";
Line 1612 sub start_menu {	Line 1890 sub start_menu {
sub end_menu {	sub end_menu {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\end{itemize}";	$currentstring = " \\end{itemize}";
Line 1623 sub end_menu {	Line 1901 sub end_menu {
#-- <dir> tag (end tag required)	#-- <dir> tag (end tag required)
sub start_dir {	sub start_dir {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # In case there's a <p> prior to the list.
if ($target eq 'web') {	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 $currentstring;
}	}
Line 1635 sub start_dir {	Line 1913 sub start_dir {
sub end_dir {	sub end_dir {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\end{itemize}";	$currentstring = " \\end{itemize}";
Line 1646 sub end_dir {	Line 1924 sub end_dir {
#-- <ol> tag (end tag required)	#-- <ol> tag (end tag required)
sub start_ol {	sub start_ol {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # In case there's a <p> prior to the list.
if ($target eq 'web') {	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,$safeeval,undef,0);
Line 1686 sub start_ol {	Line 1964 sub start_ol {
sub end_ol {	sub end_ol {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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}.}'.	$currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
Line 1700 sub end_ol {	Line 1978 sub end_ol {
#-- <dl> tag (end tag required)	#-- <dl> tag (end tag required)
sub start_dl {	sub start_dl {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
if ($target eq 'web') {	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++;
push(@Apache::londefdef::description,[]);	push(@Apache::londefdef::description,[]);
$Apache::londefdef::DD[$Apache::londefdef::DL]=0;	$Apache::londefdef::DD[$Apache::londefdef::DL]=0;
Line 1717 sub start_dl {	Line 1995 sub start_dl {
sub end_dl {	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') {	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 ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
Line 1739 sub end_dl {	Line 2017 sub end_dl {
sub start_dt {	sub start_dt {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring='';	my $currentstring='';
if ($target eq 'web') {	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 ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
Line 1754 sub start_dt {	Line 2032 sub start_dt {
sub end_dt {	sub end_dt {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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 ($Apache::londefdef::DT[-1]) {
Line 1777 sub item_cleanup {	Line 2055 sub item_cleanup {
sub start_dd {	sub start_dd {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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 ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
Line 1796 sub start_dd {	Line 2074 sub start_dd {
sub end_dd {	sub end_dd {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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].=
Line 1807 sub end_dd {	Line 2085 sub end_dd {
}	}

#-- <table> tag (end tag required)	#-- <table> tag (end tag required)
#list of supported attributes: border,width,TeXwidth	# <table> also ends any prior <p> that is not closed.
	# but, unless I allow <p>'s to nest, that's the
	# only way I could think of to allow <p> in
	# <tr> <th> bodies
	#
	#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 ($textwidth,$currentstring)=('','');	my $textwidth = '';
if ($target eq 'web') {	my $currentstring = &end_p();
$currentstring = $token->[4];	if ($target eq 'web' \|\| $target eq 'webgrade') {
} elsif ($target eq 'tex') {	$currentstring .= $token->[4];
my $aa = {};	} elsif ($target eq 'tex') {
push @Apache::londefdef::table, $aa;	&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.
}	}
}	}
my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
if (not defined $TeXwidth) {	if ((defined $cell_border)) {
my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);	if ($cell_border eq 'all') {
if ($htmlwidth=~/%/) {	$table->cell_border(1);
$Apache::londefdef::table[-1]{'percent'}=1;	} elsif ($cell_border eq 'rows') {
$htmlwidth=~/(\d+)/;	$table->cell_border(2);
$Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;	} elsif ($cell_border eq 'cols') {
	$table->cell_border(3);
	} elsif($cell_border eq 'groups') {
	$table->cell_border(4);
} else {	} else {
$Apache::londefdef::table[-1]{'width'}=$textwidth;	$table->cell_border(0);
}	}
} elsif ($TeXwidth=~/%/) {	}
$Apache::londefdef::table[-1]{'percent'}=1;	if (defined $theme) {
$TeXwidth=~/(\d+)/;	$table->theme($theme);
$Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;	}
} else {	if (defined $align) {
$Apache::londefdef::table[-1]{'forcetablewidth'}=1;	$table->alignment($align);
$Apache::londefdef::table[-1]{'width'}=$TeXwidth;	}
}
#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'} = '&';	# If a percentage, need to calculate what this means in terms of
$Apache::londefdef::table[-1]{'vvinc'} = '\|';	# page width:
} else {
$Apache::londefdef::table[-1]{'hinc'} = '';	if ($width =~ /%$/) {
$Apache::londefdef::table[-1]{'vinc'} = '&';	my $textwidth = &recalc($env{'form.textwidth'}); # Page width in mm.
$Apache::londefdef::table[-1]{'vvinc'} = '';	$width =~ s/%//;
}	$width = $width * $textwidth / 100.0;
if ($#Apache::londefdef::table==0) {	$width .= " mm";
$Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';	$table->width($width);
}	}
$Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
$Apache::londefdef::table[-1]{'TeXlen'}=[];	push(@Apache::londefdef::table, $table);
$Apache::londefdef::table[-1]{'objectlen'}=[];	$currentstring.=' \keephidden{NEW TABLE ENTRY}';
$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'}=[];
$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') {	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();
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {	# &Apache::lonnet::logthis("Generating string");
for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {	$currentstring = $t->generate_string();
if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {	# &Apache::lonnet::logthis("Generated: $currentstring");
$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];	&enable_para();
}
}
}
#free space and number of empty columns
my ($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++) {
for (my $jn=0;$jn<=$#fwidth;$jn++) {
if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
$output.='\vspace*{-6 mm}\begin{center}';
} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
$output.=' \hfill \llap{'
}
$output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
$output.='\end{center}\vspace*{-6 mm}';
} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
$output.='} ';
}
if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
}
$output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
}
$Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
if ($#Apache::londefdef::table > 0) {
my $inmemory = $Apache::londefdef::table[-1]{'output'};
pop @Apache::londefdef::table;
push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
} else {
$currentstring .= $Apache::londefdef::table[-1]{'output'};
pop @Apache::londefdef::table;
undef @Apache::londefdef::table;
}
}	}
return $currentstring;	return $currentstring;
}	}
Line 2107 sub end_table {	Line 2189 sub end_table {
sub start_tr {	sub start_tr {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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 ($alignchar ne '') {
Line 2118 sub start_tr {	Line 2213 sub start_tr {
push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';	push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
}	}
push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});	push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
	#
	# Need to save the number of table columns to preserve the max # columns.
	#
	$Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
$Apache::londefdef::table[-1]{'counter_columns'} = -1;	$Apache::londefdef::table[-1]{'counter_columns'} = -1;
push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];	push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];	push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
push @ {$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 = '';	my $currentstring = &end_p(); # Close any pending <p> in the row.
if ($target eq 'web') {	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
	# in the table so far so:
	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'};
	}
	}


}	}
return $currentstring;	return $currentstring;
}	}
Line 2145 sub end_tr {	Line 2266 sub end_tr {
sub start_td {	sub start_td {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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;
Line 2170 sub tag_check {	Line 2291 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 2185 sub start_td_tex {	Line 2356 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 $data=&Apache::lonxml::endredirection();	my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
	my $data = &Apache::lonxml::endredirection();

	# The rowspan array of the table indicates which cells are part of a span.
	# n indicates the start of a span set of n rows.
	# ^ indicates a cell that continues a span set.
	# _ indicates the cell is at the bottom of a span set.
	# If this and subsequent cells are part of a rowspan, we must
	# push along the row until we find one that is not.

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


	# Get the column and row spans.
	# Colspan can be done via \multicolumn if I can figure out the data structs.

	my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
	if (!$colspan) {
	$colspan = 1;
	}

	my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
	if (!$rowspan) {
	$rowspan = 1;
	}



	for (my $c = 0; $c < $colspan; $c++) {
	$Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
	for (my $i = 1; $i < $rowspan; $i++) {
	$Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
	if ($i == ($rowspan-1)) {
	$Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
	}
	}
	}

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 2213 sub end_td_tex {	Line 2440 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 $fwidth=0;
Line 2232 sub end_td_tex {	Line 2461 sub end_td_tex {
if ($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'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
	push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
	}
$data=~s/\\\\\s*$//;	$data=~s/\\\\\s*$//;
} else {	} else {
$data=~s/^\s+(\S.*)/$1/;	$data=~s/^\s+(\S.*)/$1/;
Line 2263 sub end_td_tex {	Line 2494 sub end_td_tex {
if ($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;
	}
}	}
}	}
for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {	# Substitute all of the tables nested in this cell in their appropriate places.
$data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
}
	my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
	for (my $in=0; $in<=$nested_count; $in++) {
	my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
	$nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
	# $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
	$data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;

	}
	# Should be be killing off the 'include' elements as they're used up?

push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;	push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
return'';



	# the colspan array will indicate how many columns will be spanned by this
	# cell..this requires that counter_columns also be adjusted accordingly
	# so that the next bunch of text goes in the right cell. Note that since
	# counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
	#

	$Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
	for (my $i = 0; $i < ($colspan -1); $i++) {
	push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
	}
	for (my $r = 0; $r < $rowspan; $r++) {
	$Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
	# Put empty text in spanned cols.

	}

	}

	return '';
}	}

sub end_td {	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') {	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;	$Apache::londefdef::TD_redirection =0;
Line 2292 sub end_td {	Line 2557 sub end_td {
sub start_th {	sub start_th {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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;
Line 2320 sub tagg_check {	Line 2585 sub tagg_check {

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 2332 sub start_th_tex {	Line 2615 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 2402 sub end_th_tex {	Line 2699 sub end_th_tex {
#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'';
}	}

sub end_th {	sub end_th {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close any open <p> in the row.
if ($target eq 'web') {	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,$safeeval);
Line 2429 sub end_th {	Line 2727 sub end_th {
# (Note there seems to also be support for this as a % of page size)	# (Note there seems to also be support for this as a % of page size)
#	#
sub start_img {	sub start_img {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($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 (not $src and ($target eq 'web' or $target eq 'tex')) {	if (! $src &&
my $inside = &Apache::lonxml::get_all_text("/img",$parser);	($target eq 'web' \|\| $target eq 'webgrade' \|\| $target eq 'tex')
	) {
	my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
return '';	return '';
}	}
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;	&Apache::lonxml::extlink($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 ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
if ($ENV{'browser.imagesuppress'} ne 'on') {	my $enc = ('yes' eq
$currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});	lc(&Apache::lonxml::get_param('encrypturl',$parstack,
} else {	$safeeval)));
my $alttag= &Apache::lonxml::get_param	$currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
('alt',$parstack,$safeeval,undef,1);	$enc);
unless ($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 2469 sub start_img {	Line 2762 sub start_img {
$safeeval,	$safeeval,
undef,1));	undef,1));
if(!$align) {	if(!$align) {
$align = "bottom"; # This is html's default so it's ours too.	$align = "bottom"; # This is html's default so it's ours too.
}	}
#	#
&Apache::lonxml::debug("Alignemnt = $align");	&Apache::lonxml::debug("Alignemnt = $align");
Line 2484 sub start_img {	Line 2777 sub start_img {
$parstack,	$parstack,
$safeeval,	$safeeval,
undef,0);	undef,0);
&Apache::lonxml::debug("LaTeX rendering = $latex_rendering");	# &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
if(!$latex_rendering) {	if(!$latex_rendering) {
$latex_rendering = "parbox";	$latex_rendering = "texwrap";
}	}
&Apache::lonxml::debug("LaTeX rendering = $latex_rendering");	# using texwrap inside a table does not work. So, if after all of this,
	# texwrap is on, we turn it off if we detect we're in a table:
	#
	if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
	$latex_rendering = 'parpic';
	}

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

my $oldSRC=$src;	#if original bmp/gif/jpg/png file exist do following:
$oldSRC=~s/\.(gif\|jpg\|png)$/\.eps/;	my $origsrc=$src;
	my ($path,$file) = &get_eps_image($src);
	# &Apache::lonnet::logthis("Image source: $src result: $path $file");
$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);	$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
#if original gif/jpg/png file exist do following:	&Apache::lonxml::debug("path = $path file = $file src = $src");
if (-e $src) {	if (-e $src) {
#what is the image size?	&Apache::lonxml::debug("$src exists");
my $width_param=&image_width($src,$scaling,$parstack,$safeeval);	my ($height_param,$width_param)=
my $height_param=&image_height($src,$scaling,$parstack,$safeeval);	&image_size($origsrc,0.3,$parstack,$safeeval);
my ($file,$path)=&file_path($src);	my $size;
my $newsrc = $src;	if ($width_param) { $size.='width='.$width_param.' mm,'; }
$newsrc =~ s/\.(gif\|jpg\|png)$/.eps/i;	if ($height_param) { $size.='height='.$height_param.' mm]'; }
&Apache::lonnet::repcopy($oldSRC);	# Default size if not able to extract that (e.g. eps image).
$file=~s/\.(gif\|jpg\|png)$/.eps/i;
#where can we find the picture?	# &Apache::lonnet::logthis("Size = $size");
if (-e $newsrc) {
#eps counterpart for image exist	$size='['.$size;
if ($path) {	$size=~s/,$/]/;
$currentstring .= '\graphicspath{{'.$path.'}}'	$currentstring .= '\graphicspath{{'.$path.'}}'
.'\includegraphics[width='.$width_param.' mm,height='.$height_param.'mm]{'.$file.'} ';	.'\includegraphics'.$size.'{'.$file.'} ';
}	my $closure;
} else {	($currentstring, $closure) = &align_latex_image($align,
#there is no eps counterpart for image - check for ps one	$latex_rendering,
$newsrc =~ s/\.eps$/\.ps/;	$currentstring,
if (-e $newsrc) {	$width_param,
#ps counterpart for image exist	$height_param);
$file =~ s/\.eps$/\.ps/;	$currentstring .= $closure;
if ($path) {
$currentstring .= '\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
}
} else {
#care about eps dynamical generation
$currentstring.=&eps_generation($src,$file,$width_param);
}
}
# 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.'}';
} else { # parbox rendering
$currentstring = "\n".'\parbox{'.$width_param.'mm}{'.$currentstring.'}';
}
} elsif ($align eq "right") {
if ($latex_rendering eq "parpic") {
$currentstring = '\parpic[r]{'.$currentstring.'}';
} else { # parbox rendering.
$currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}'
.$currentstring.'\end{flushright}} \newline'."\n";
}
} else { # Bottom is also default.
# $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
}
} else {	} else {
	&Apache::lonxml::debug("$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);
Line 2561 sub start_img {	Line 2828 sub start_img {
$alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);	$alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
}	}

if ($alt) {	if ($alt) { $currentstring .= ' '.$alt.' '; }
$currentstring .= ' '.$alt.' ';
} else {
#<allow> tag will care about replication
}
}	}

# 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('src',undef,'alt',$only).' '.
&Apache::edit::search('src',undef,'alt').'<br />';	&Apache::edit::search('src',undef,'alt').'<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);
Line 2585 sub start_img {	Line 2847 sub start_img {
$currentstring .=&Apache::edit::select_arg('Alignment:','align',	$currentstring .=&Apache::edit::select_arg('Alignment:','align',
['','bottom','middle','top','left','right'],$token,5);	['','bottom','middle','top','left','right'],$token,5);
$currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',	$currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
['', 'parbox', 'parpic'], $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',
	['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);

	if ($token->[2]{'src'}=~/\$/) {
$currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';	$currentstring.=&mt('Variable image source');
if ($width) { $currentstring.=' width="'.$width.'" '; }	} elsif ($token->[2]{'src'}=~/\S/) {
if ($height) { $currentstring.=' height="'.$height.'" '; }	$currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
$currentstring .= ' />';	if ($width) { $currentstring.=' width="'.$width.'" '; }
	if ($height) { $currentstring.=' height="'.$height.'" '; }
	$currentstring .= ' />';
	} else {
	$currentstring.=&mt("No image source specified");
	}
} elsif ($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'});
my $ctag=&Apache::edit::get_new_args($token,$parstack,	my $ctag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'src','alt','align',	$safeeval,'src','alt','align',
'TeXwidth','TeXheight', 'TeXwrap',	'TeXwidth','TeXheight', 'TeXwrap',
'width','height');	'width','height','encrypturl');
my ($nsrc,$nwidth,$nheight)=	my ($nsrc,$nwidth,$nheight)=
($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});	($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);	my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
Line 2638 sub start_img {	Line 2912 sub start_img {
}	}
if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}	if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
}	}

return $currentstring;	return $currentstring;
}	}

sub end_img {	sub end_img {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '';	$currentstring = '';
Line 2657 sub start_applet {	Line 2932 sub start_applet {
my ($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);
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;	&Apache::lonxml::extlink($code);

my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,	my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
undef,1);	undef,1);
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;	&Apache::lonxml::extlink($archive);

my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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 2690 sub start_applet {	Line 2972 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 $currentstring;
}	}
Line 2697 sub start_applet {	Line 2990 sub start_applet {
sub end_applet {	sub end_applet {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
}	}
Line 2708 sub end_applet {	Line 3001 sub end_applet {
sub start_embed {	sub start_embed {
my ($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);
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;	&Apache::lonxml::extlink($src);
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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 $currentstring;
Line 2729 sub start_embed {	Line 3013 sub start_embed {
sub end_embed {	sub end_embed {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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	my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval,
('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {	undef,1);
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=	if ($name =~/^cabbase$/i) {
&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);	my $value=&Apache::lonxml::get_param('value',$parstack,
}	$safeeval,undef,1);
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=	&Apache::lonxml::extlink($value);
&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);	} elsif ($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,$safeeval,undef,1);
	if ($src ne '') {
	&Apache::lonxml::extlink($src);
	}
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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);	$safeeval,undef,1);
Line 2766 sub start_param {	Line 3078 sub start_param {
sub end_param {	sub end_param {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
}	}
Line 2777 sub end_param {	Line 3089 sub end_param {
sub start_allow {	sub start_allow {
my ($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);
$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);	&Apache::lonxml::extlink($src);
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
&Apache::lonnet::clutter($src);
if ($target eq 'tex') { &image_replication($src); }	if ($target eq 'tex') { &image_replication($src); }
my $result;	my $result;
if ($target eq 'edit') {	if ($target eq 'edit') {
Line 2804 sub end_allow {	Line 3115 sub end_allow {
#-- <frameset>	#-- <frameset>
sub start_frameset {	sub start_frameset {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = ''; # Close any pending para.
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
if (!$Apache::lonxml::registered &&	$currentstring =
$ENV{'request.state'} eq 'published') {	&Apache::loncommon::start_page($Apache::londefdef::title,
$currentstring.='<head>'.	$Apache::londefdef::head,
&Apache::lonmenu::registerurl(undef,$target).'</head>';	{'add_entries' => $token->[2],
}	# 'no_title' => 1,
my $onLoad='';	'force_register' => 1,
foreach my $key (keys(%{$token->[2]})) {	'frameset' => 1,});
if ($key =~ /^onload$/i) {
$onLoad.=$token->[2]->{$key}.';';
delete($token->[2]->{$key});
}
}
$token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
my $onUnload='';
foreach my $key (keys(%{$token->[2]})) {
if ($key =~ /^onunload$/i) {
$onUnload.=$token->[2]->{$key}.';';
delete($token->[2]->{$key});
}
}
$token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
';'.$onUnload;

$currentstring .= '<'.$token->[1];
foreach (keys %{$token->[2]}) {
$currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
}
$currentstring.='>';
}	}
return $currentstring;	return $currentstring;
}	}
Line 2841 sub start_frameset {	Line 3132 sub start_frameset {
sub end_frameset {	sub end_frameset {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 2851 sub end_frameset {	Line 3142 sub end_frameset {
sub start_xmp {	sub start_xmp {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\begin{verbatim}';	$currentstring .= '\begin{verbatim}';
Line 2862 sub start_xmp {	Line 3153 sub start_xmp {
sub end_xmp {	sub end_xmp {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\end{verbatim}';	$currentstring .= '\end{verbatim}';
Line 2873 sub end_xmp {	Line 3164 sub end_xmp {
#-- <pre> (end tag required)	#-- <pre> (end tag required)
sub start_pre {	sub start_pre {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # close off pending <p>
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\begin{verbatim}';	$currentstring .= '\begin{verbatim}';
	&Apache::lonxml::disable_LaTeX_substitutions();
}	}
return $currentstring;	return $currentstring;
}	}
Line 2885 sub start_pre {	Line 3177 sub start_pre {
sub end_pre {	sub end_pre {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\end{verbatim}';	$currentstring .= '\end{verbatim}';
	&Apache::lonxml::enable_LaTeX_substitutions();
}	}
return $currentstring;	return $currentstring;
}	}
Line 2897 sub end_pre {	Line 3190 sub end_pre {
sub start_insert {	sub start_insert {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);	my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
$currentstring .= '<b>'.$display.'</b>';;	$currentstring .= '<b>'.$display.'</b>';;
}	}
Line 2907 sub start_insert {	Line 3200 sub start_insert {
sub end_insert {	sub end_insert {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= '';	$currentstring .= '';
}	}
return $currentstring;	return $currentstring;
Line 2917 sub end_insert {	Line 3210 sub end_insert {
sub start_externallink {	sub start_externallink {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);	my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
$currentstring .= '<b>'.$display.'</b>';;	$currentstring .= '<b>'.$display.'</b>';;
}	}
Line 2927 sub start_externallink {	Line 3220 sub start_externallink {
sub end_externallink {	sub end_externallink {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring .= '';	$currentstring .= '';
}	}
return $currentstring;	return $currentstring;
Line 2936 sub end_externallink {	Line 3229 sub end_externallink {
#-- <blankspace heigth="">	#-- <blankspace heigth="">
sub start_blankspace {	sub start_blankspace {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	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 $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
$currentstring .= '\vskip '.$howmuch.' ';	$currentstring .= '\vskip '.$howmuch.' ';
Line 2957 sub end_blankspace {	Line 3250 sub end_blankspace {
sub start_abbr {	sub start_abbr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 2966 sub start_abbr {	Line 3259 sub start_abbr {
sub end_abbr {	sub end_abbr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 2976 sub end_abbr {	Line 3269 sub end_abbr {
sub start_acronym {	sub start_acronym {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 2985 sub start_acronym {	Line 3278 sub start_acronym {
sub end_acronym {	sub end_acronym {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 2995 sub end_acronym {	Line 3288 sub end_acronym {
sub start_area {	sub start_area {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3004 sub start_area {	Line 3297 sub start_area {
sub end_area {	sub end_area {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3014 sub end_area {	Line 3307 sub end_area {
sub start_base {	sub start_base {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3023 sub start_base {	Line 3316 sub start_base {
sub end_base {	sub end_base {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3033 sub end_base {	Line 3326 sub end_base {
sub start_bdo {	sub start_bdo {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3042 sub start_bdo {	Line 3335 sub start_bdo {
sub end_bdo {	sub end_bdo {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3052 sub end_bdo {	Line 3345 sub end_bdo {
sub start_bgsound {	sub start_bgsound {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3061 sub start_bgsound {	Line 3354 sub start_bgsound {
sub end_bgsound {	sub end_bgsound {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3071 sub end_bgsound {	Line 3364 sub end_bgsound {
sub start_blink {	sub start_blink {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3080 sub start_blink {	Line 3373 sub start_blink {
sub end_blink {	sub end_blink {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3089 sub end_blink {	Line 3382 sub end_blink {
#-- <blockquote> tag (end tag required)	#-- <blockquote> tag (end tag required)
sub start_blockquote {	sub start_blockquote {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close any unclosed <p>
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring .= $token->[4];
}	}
	if ($target eq 'tex') {
	$currentstring .= '\begin{quote}';
	}
return $currentstring;	return $currentstring;
}	}

sub end_blockquote {	sub end_blockquote {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
	if ($target eq 'tex') {
	$currentstring = '\end{quote}';
	}
return $currentstring;	return $currentstring;
}	}

Line 3109 sub end_blockquote {	Line 3408 sub end_blockquote {
sub start_button {	sub start_button {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3118 sub start_button {	Line 3417 sub start_button {
sub end_button {	sub end_button {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3128 sub end_button {	Line 3427 sub end_button {
sub start_caption {	sub start_caption {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3137 sub start_caption {	Line 3436 sub start_caption {
sub end_caption {	sub end_caption {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3147 sub end_caption {	Line 3446 sub end_caption {
sub start_col {	sub start_col {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3156 sub start_col {	Line 3455 sub start_col {
sub end_col {	sub end_col {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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') {	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;
}	}

sub end_colgroup {	sub end_colgroup {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
	} elsif ($target eq 'tex') {
	&disable_para();
	$currentstring .= '\st{';
}	}
return $currentstring;	return $currentstring;
}	}
Line 3194 sub start_del {	Line 3518 sub start_del {
sub end_del {	sub end_del {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
	} elsif ($target eq 'tex') {
	&enable_para();
	$currentstring = '}';
}	}
return $currentstring;	return $currentstring;
}	}
Line 3204 sub end_del {	Line 3531 sub end_del {
sub start_fieldset {	sub start_fieldset {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3213 sub start_fieldset {	Line 3540 sub start_fieldset {
sub end_fieldset {	sub end_fieldset {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3223 sub end_fieldset {	Line 3550 sub end_fieldset {
sub start_frame {	sub start_frame {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3232 sub start_frame {	Line 3559 sub start_frame {
sub end_frame {	sub end_frame {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3242 sub end_frame {	Line 3569 sub end_frame {
sub start_iframe {	sub start_iframe {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3251 sub start_iframe {	Line 3578 sub start_iframe {
sub end_iframe {	sub end_iframe {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3261 sub end_iframe {	Line 3588 sub end_iframe {
sub start_ins {	sub start_ins {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3270 sub start_ins {	Line 3597 sub start_ins {
sub end_ins {	sub end_ins {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3280 sub end_ins {	Line 3607 sub end_ins {
sub start_isindex {	sub start_isindex {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3289 sub start_isindex {	Line 3616 sub start_isindex {
sub end_isindex {	sub end_isindex {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3299 sub end_isindex {	Line 3626 sub end_isindex {
sub start_keygen {	sub start_keygen {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3308 sub start_keygen {	Line 3635 sub start_keygen {
sub end_keygen {	sub end_keygen {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3318 sub end_keygen {	Line 3645 sub end_keygen {
sub start_label {	sub start_label {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3327 sub start_label {	Line 3654 sub start_label {
sub end_label {	sub end_label {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3337 sub end_label {	Line 3664 sub end_label {
sub start_layer {	sub start_layer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3346 sub start_layer {	Line 3673 sub start_layer {
sub end_layer {	sub end_layer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3356 sub end_layer {	Line 3683 sub end_layer {
sub start_legend {	sub start_legend {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3365 sub start_legend {	Line 3692 sub start_legend {
sub end_legend {	sub end_legend {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3373 sub end_legend {	Line 3700 sub end_legend {

#-- <link> tag (end tag forbidden)	#-- <link> tag (end tag forbidden)
sub start_link {	sub start_link {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
	my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
	undef,1);
	&Apache::lonxml::extlink($href);
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3384 sub start_link {	Line 3714 sub start_link {
sub end_link {	sub end_link {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3394 sub end_link {	Line 3724 sub end_link {
sub start_marquee {	sub start_marquee {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3403 sub start_marquee {	Line 3733 sub start_marquee {
sub end_marquee {	sub end_marquee {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3412 sub end_marquee {	Line 3742 sub end_marquee {
#-- <multicol> tag (end tag required)	#-- <multicol> tag (end tag required)
sub start_multicol {	sub start_multicol {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close any pending <p>
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring .= $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}
Line 3422 sub start_multicol {	Line 3752 sub start_multicol {
sub end_multicol {	sub end_multicol {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3432 sub end_multicol {	Line 3762 sub end_multicol {
sub start_nobr {	sub start_nobr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring='\mbox{';	$currentstring='\mbox{';
Line 3443 sub start_nobr {	Line 3773 sub start_nobr {
sub end_nobr {	sub end_nobr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring='}';	$currentstring='}';
Line 3455 sub end_nobr {	Line 3785 sub end_nobr {
sub start_noembed {	sub start_noembed {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3464 sub start_noembed {	Line 3794 sub start_noembed {
sub end_noembed {	sub end_noembed {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3474 sub end_noembed {	Line 3804 sub end_noembed {
sub start_noframes {	sub start_noframes {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3483 sub start_noframes {	Line 3813 sub start_noframes {
sub end_noframes {	sub end_noframes {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3493 sub end_noframes {	Line 3823 sub end_noframes {
sub start_nolayer {	sub start_nolayer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3502 sub start_nolayer {	Line 3832 sub start_nolayer {
sub end_nolayer {	sub end_nolayer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3512 sub end_nolayer {	Line 3842 sub end_nolayer {
sub start_noscript {	sub start_noscript {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3521 sub start_noscript {	Line 3851 sub start_noscript {
sub end_noscript {	sub end_noscript {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3531 sub end_noscript {	Line 3861 sub end_noscript {
sub start_object {	sub start_object {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3540 sub start_object {	Line 3870 sub start_object {
sub end_object {	sub end_object {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3550 sub end_object {	Line 3880 sub end_object {
sub start_optgroup {	sub start_optgroup {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3559 sub start_optgroup {	Line 3889 sub start_optgroup {
sub end_optgroup {	sub end_optgroup {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3569 sub end_optgroup {	Line 3899 sub end_optgroup {
sub start_samp {	sub start_samp {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring='\texttt{';	$currentstring='\texttt{';
Line 3580 sub start_samp {	Line 3910 sub start_samp {
sub end_samp {	sub end_samp {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring='}';	$currentstring='}';
Line 3592 sub end_samp {	Line 3922 sub end_samp {
sub start_server {	sub start_server {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3601 sub start_server {	Line 3931 sub start_server {
sub end_server {	sub end_server {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3610 sub end_server {	Line 3940 sub end_server {
#-- <spacer> tag (end tag forbidden)	#-- <spacer> tag (end tag forbidden)
sub start_spacer {	sub start_spacer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = &end_p(); # Close off any open <p> tag.
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring .= $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}
Line 3620 sub start_spacer {	Line 3950 sub start_spacer {
sub end_spacer {	sub end_spacer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3630 sub end_spacer {	Line 3960 sub end_spacer {
sub start_span {	sub start_span {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3639 sub start_span {	Line 3969 sub start_span {
sub end_span {	sub end_span {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3649 sub end_span {	Line 3979 sub end_span {
sub start_tbody {	sub start_tbody {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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;
}	}

sub end_tbody {	sub end_tbody {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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 3668 sub end_tbody {	Line 4010 sub end_tbody {
sub start_tfoot {	sub start_tfoot {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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;
}	}

sub end_tfoot {	sub end_tfoot {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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 3687 sub end_tfoot {	Line 4039 sub end_tfoot {
sub start_thead {	sub start_thead {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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;
}	}

sub end_thead {	sub end_thead {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	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 3706 sub end_thead {	Line 4069 sub end_thead {
sub start_var {	sub start_var {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\textit{';	$currentstring = '\textit{';
Line 3717 sub start_var {	Line 4080 sub start_var {
sub end_var {	sub end_var {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '}';	$currentstring = '}';
Line 3729 sub end_var {	Line 4092 sub end_var {
sub start_wbr {	sub start_wbr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
Line 3738 sub start_wbr {	Line 4101 sub start_wbr {
sub end_wbr {	sub end_wbr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	}
return $currentstring;	return $currentstring;
Line 3747 sub end_wbr {	Line 4110 sub end_wbr {
#-- <hideweboutput> tag	#-- <hideweboutput> tag
sub start_hideweboutput {	sub start_hideweboutput {
my ($target,$token) = @_;	my ($target,$token) = @_;
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
}	}
return '';	return '';
Line 3756 sub start_hideweboutput {	Line 4119 sub start_hideweboutput {
sub end_hideweboutput {	sub end_hideweboutput {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' \|\| $target eq 'webgrade') {
$currentstring = &Apache::lonxml::endredirection();	$currentstring = &Apache::lonxml::endredirection();
}	}
return '';	return '';
Line 3772 sub image_replication {	Line 4135 sub image_replication {
$pssrc =~ s/\.(gif\|jpg\|jpeg\|png)$/.ps/i;	$pssrc =~ s/\.(gif\|jpg\|jpeg\|png)$/.ps/i;
if (not -e $epssrc && not -e $pssrc) {	if (not -e $epssrc && not -e $pssrc) {
my $result=&Apache::lonnet::repcopy($epssrc);	my $result=&Apache::lonnet::repcopy($epssrc);
if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }	if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
}	}
return '';	return '';
}	}

sub image_size {
my ($src,$scaling,$parstack,$safeeval)=@_;
#size of image from gif/jpg/jpeg/png	sub resize_image {
my $image = Image::Magick->new;	my ($height_param, $width_param, $scaling,
my $current_figure = $image->Read($src);	$parstack, $safeeval, $depth, $cis) = @_;
my $width_param = $image->Get('width') * $scaling;;
my $height_param = $image->Get('height') * $scaling;;	# First apply the scaling...
undef $image;
	$height_param = $height_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 $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);	my $toget='TeXwidth';
my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);	if ($cis) {
	$toget=lc($toget);
	}
	my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
	$safeeval,$depth,$cis);
	$toget='TeXheight'; if ($cis) { $toget=lc($toget); }
	my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
	$safeeval,$depth,$cis);
#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,
undef,1);	$depth,1);
if ($TeXwidth ne '') {	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;
}	}
$height_param=$TeXwidth/$old_width_param*$height_param;	if ($TeXheight) {
} elsif ($TeXheight ne '') {	$height_param = $TeXheight;
	} elsif ($old_width_param) {
	$height_param=$TeXwidth/$old_width_param*$height_param;
	}
	} elsif ($TeXheight) {
$height_param = $TeXheight;	$height_param = $TeXheight;
$width_param = $TeXheight/$height_param*$width_param;	if ($height_param) {
} elsif ($width ne '') {	$width_param = $TeXheight/$height_param*$width_param;
	}
	} elsif ($width) {
my $old_width_param=$width_param;	my $old_width_param=$width_param;
$width_param = $width*$scaling;	$width_param = $width*$scaling;
$height_param=$width_param/$old_width_param*$height_param;	if ($old_width_param) {
	$height_param=$width_param/$old_width_param*$height_param;
	}
}	}
if ($width_param > $ENV{'form.textwidth'}) {	if ($width_param > $env{'form.textwidth'}) {
my $old_width_param=$width_param;	my $old_width_param=$width_param;
$width_param =0.95*$ENV{'form.textwidth'};	$width_param =0.95*$env{'form.textwidth'};
$height_param=$width_param/$old_width_param*$height_param;	if ($old_width_param) {
	$height_param=$width_param/$old_width_param*$height_param;
	}
}	}

	return ($height_param, $width_param);
	}

	sub image_size {
	my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;

	#size of image from gif/jpg/jpeg/png
	my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
	if (-e $ressrc) {
	$src = $ressrc;
	}
	my $image = Image::Magick->new;
	my $current_figure = $image->Read($src);
	my $width_param = $image->Get('width');
	my $height_param = $image->Get('height');
	&Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
	undef($image);

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

return ($height_param, $width_param);	return ($height_param, $width_param);
}	}

Line 3827 sub image_height {	Line 4233 sub image_height {
return $height;	return $height;
}	}

	sub get_eps_image {
	my ($src)=@_;
	my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);

	# In order to prevent the substitution of the alt text, we need to
	# be sure the orig_src file is on system now so:

	if (! -e $orig_src) {
	&Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
	}
	&Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
	my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp\|gif\|png\|jpg\|jpeg)/i);
	$src=~s/\.(bmp\|gif\|png\|jpg\|jpeg)$/\.eps/i;
	$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
	&Apache::lonxml::debug("Filelocation gives: $src");
	if (! -e $src) {
	&Apache::lonxml::debug("$src does not exist");
	if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
	&Apache::lonxml::debug("Repcopy of $src failed (1)");
	#if replication failed try to find ps file
	$src=~s/\.eps$/\.ps/;
	&Apache::lonxml::debug("Now looking for $src");
	#if no ps file try to replicate it.
	my $didrepcopy = &Apache::lonnet::repcopy($src);
	&Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
	if ( (not -e $src) \|\|
	($didrepcopy ne 'ok')) {
	&Apache::lonxml::debug("Failed to find or replicate $src");

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

	}

	}
	} else {
	# If the postscript file has spaces in its name,
	# LaTeX will gratuitiously vomit. Therefore
	# queue such files for copy with " " replaced by "_".
	# printout.pm will know them by their .ps or .eps extensions.
	my $newsrc = $orig_src;
	$newsrc =~ s\|(.*)/res/\|/home/httpd/html/res/\|;
	open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
	print FILE "$src\n";
	close FILE;
	$src=~s\|/home/httpd/html/res\|/home/httpd/prtspool\|;
	$src=~s\|/home/httpd/html/priv/[^/]+/([^/]*)/\|/home/httpd/prtspool/$1/\|;
	}
	my ($path,$file)=($src=~m\|(.)/([^/])$\|);
	$path =~ s/ /\_/g;
	$file =~ s/ /\_/g;
	&Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
	return ($path.'/',$file);
	}

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\/([^\/]*)\/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=~/\/home\/httpd\/lonUsers\//) {	if ($newsrc=~m{/home/httpd/lonUsers/}) {
$newsrc=~s/\/home\/httpd\/lonUsers//;	$newsrc=~s{/home/httpd/lonUsers}{};
$newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;	$newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
}	}
if ($newsrc=~/\/userfiles\//) {	if ($newsrc=~m{/userfiles/}) {
return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';	return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
} else {	} else {
return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';	return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
Line 3859 sub file_path {	Line 4334 sub file_path {
return $file,$path;	return $file,$path;
}	}


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 3903 sub LATEX_length {	Line 4379 sub LATEX_length {
}	}


	sub align_latex_image {
	my ($align, $latex_rendering, $image, $width, $height) = @_;
	my $currentstring; # The 1/2 wrapped image.
	my $closure; # The closure of the wrappage.

	# if it's none just return it back
	if ($latex_rendering eq 'none') {
	return ($image,'');
	}

	# 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 {
	my ($tagstack, $tag) = @_;
	my @stack = @$tagstack;
	for (my $i = ($#stack - 1); $i >= 0; $i--) {
	if ($stack[$i] eq $tag) {
	return 1;
	}
	}
	return 0;
	}


	#
	# 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}'.
	'\usepackage{longtable}'.
	'\usepackage{textcomp}'.
	'\usepackage{makeidx}'.
	'\usepackage[dvips]{graphicx}'.
	'\usepackage{wrapfig}'.
	'\usepackage{picins}'.
	'\usepackage[T1]{fontenc}'."\n".
	'\usepackage{lmodern}'."\n".
	'\usepackage[postscript]{ucs}'."\n".
	'\usepackage[utf8x]{inputenc}'."\n".
	'\usepackage{pifont}' ."\n".
	'\usepackage{latexsym}'."\n".
	'\usepackage{epsfig}'.
	"\\usepackage{xtab}\n".
	"\\usepackage{tabularx}\n".
	"\\usepackage{booktabs}\n".
	"\\usepackage{array}\n".
	"\\usepackage{colortbl}\n".
	"\\usepackage{xcolor}\n".
	'\usepackage{calc}'.
	'\usepackage{amsmath}'.
	'\usepackage{soul}'.
	'\usepackage{amssymb}'.
	'\usepackage{amsfonts}'.
	'\usepackage{amsthm}'.
	'\usepackage{amscd}'
	.'\usepackage{picins}\usepackage{calc}'."\n". # From lonprintout.pm
	'\usepackage[T1]{fontenc}'."\n".
	'\usepackage{lmodern}'."\n".
	'\usepackage[postscript]{ucs}'."\n".
	'\usepackage[utf8x]{inputenc}'."\n".
	'\usepackage{pifont}' . "\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;

	}

	=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....
	}



	=back

	=cut


1;	1;

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	Added in v.1.444