loncom/xml/londefdef.pm - diff

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Diff for /loncom/xml/londefdef.pm between versions 1.122 and 1.198

version 1.122, 2003/03/18 15:32:15	version 1.198, 2004/02/19 19:34:09
Line 25	Line 25
# /home/httpd/html/adm/gpl.txt	# /home/httpd/html/adm/gpl.txt
#	#
# http://www.lon-capa.org/	# http://www.lon-capa.org/
#	## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
# Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
# TtHfunc and TtMfunc (the "Code") may be compiled and linked into	# TtHfunc and TtMfunc (the "Code") may be compiled and linked into
# binary executable programs or libraries distributed by the	# binary executable programs or libraries distributed by the
# Michigan State University (the "Licensee"), but any binaries so	# Michigan State University (the "Licensee"), but any binaries so
Line 46 package Apache::londefdef;	Line 45 package Apache::londefdef;

use Apache::lonnet();	use Apache::lonnet();
use strict;	use strict;
use Apache::lonxml();	use Apache::lonxml;
use Apache::File();	use Apache::File();
use Image::Magick;	use Image::Magick;
use Apache::lonmenu();	use Apache::lonmenu();
use Apache::lonmeta();	use Apache::lonmeta();
	use Apache::Constants qw(:common);


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'));	&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'));

	}

	sub initialize_londefdef {
	$Apache::londefdef::TD_redirection=0;
	@Apache::londefdef::table = ();
	$Apache::londefdef::select=0;
	@Apache::londefdef::description=();
	$Apache::londefdef::DD_redirection=0;
	$Apache::londefdef::DT_redirection=0;
}	}

#======================= TAG SUBROUTINES =====================	#======================= TAG SUBROUTINES =====================
Line 72 sub end_output {	Line 82 sub end_output {
}	}
#-- <m> tag	#-- <m> tag
sub start_m {	sub start_m {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
	if ($target eq 'web' \|\| $target eq 'analyze') {
$Apache::lonxml::prevent_entity_encode++;	$Apache::lonxml::prevent_entity_encode++;
my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
$inside ='\\documentstyle{article}'.$inside;	$inside ='\\documentstyle{article}'.$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);
Line 91 sub start_m {	Line 101 sub start_m {
$Apache::lontexconvert::errorstring='';	$Apache::lontexconvert::errorstring='';
}	}
#&Apache::lonxml::debug("M is ends with:$currentstring:");	#&Apache::lonxml::debug("M is ends with:$currentstring:");
	$Apache::lonxml::post_evaluate=0;
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);	$currentstring = $inside;
	my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
	if ($eval eq 'on') {
	$currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
	}
if ($currentstring=~/^(\s\\\\\s)*$/) {$currentstring = ' \vskip 0 mm ';}	if ($currentstring=~/^(\s\\\\\s)*$/) {$currentstring = ' \vskip 0 mm ';}
} else {	$Apache::lonxml::post_evaluate=0;
my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
}	}
return $currentstring;	return $currentstring;
}	}
Line 133 sub end_tthoption {	Line 147 sub end_tthoption {
return $result;	return $result;
}	}

#-- <html> tag	#-- <html> tag (end tag optional)
sub start_html {	sub start_html {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($ENV{'browser.mathml'}) {	my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
&tth::ttminit();	&Apache::lontexconvert::init_tth();
if ($ENV{'browser.unicode'}) {	if ($target eq 'web' \|\| $target eq 'edit') {
&tth::ttmoptions('-L -u1');
} else {
&tth::ttmoptions('-L -u0');
}
} else {
&tth::tthinit();
if ($ENV{'browser.unicode'}) {
&tth::tthoptions('-L -u1');
} else {
&tth::tthoptions('-L -u0');
}
}
if ($target eq 'web') {
$currentstring = &Apache::lonxml::xmlbegin().	$currentstring = &Apache::lonxml::xmlbegin().
&Apache::lonxml::fontsettings();	&Apache::lonxml::fontsettings();
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
@Apache::londefdef::table = ();	@Apache::londefdef::table = ();
$currentstring .= '\documentclass[letterpaper]{article}	$currentstring .= '\documentclass[letterpaper]{article}';
\newcommand{\keephidden}[1]{}	if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}
	$currentstring .= '\newcommand{\keephidden}[1]{}
\renewcommand{\deg}{$^{\circ}$}	\renewcommand{\deg}{$^{\circ}$}
	\usepackage{longtable}
\usepackage{textcomp}	\usepackage{textcomp}
	\usepackage{makeidx}
\usepackage[dvips]{graphicx}	\usepackage[dvips]{graphicx}
\usepackage{epsfig}\usepackage{calc}	\usepackage{epsfig}\usepackage{calc}
\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}}';	\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 177 sub end_html {	Line 182 sub end_html {
return $currentstring;	return $currentstring;
}	}

#-- <head> tag	#-- <head> tag (end tag optional)
sub start_head {	sub start_head {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 190 sub start_head {	Line 195 sub start_head {
sub end_head {	sub end_head {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
$currentstring = &Apache::lonmenu::registerurl(undef,$target).	$currentstring = &Apache::lonmenu::registerurl(undef,$target).
$token->[2];	$token->[2];
}	}
return $currentstring;	return $currentstring;
}	}

#-- <map> tag	#-- <map> tag (end tag required)
sub start_map {	sub start_map {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 216 sub end_map {	Line 221 sub end_map {
return $currentstring;	return $currentstring;
}	}

#-- <select> tag	#-- <select> tag (end tag required)
sub start_select {	sub start_select {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	} elsif ($target eq 'tex') {
	$Apache::londefdef::select=0;
	}
return $currentstring;	return $currentstring;
}	}

Line 235 sub end_select {	Line 242 sub end_select {
return $currentstring;	return $currentstring;
}	}

#-- <option> tag	#-- <option> tag (end tag optional)
sub start_option {	sub start_option {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	} elsif ($target eq 'tex') {
	$Apache::londefdef::select++;
	if ($Apache::londefdef::select == 1) {
	$currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
	} else {
	$currentstring='\keephidden{';
	}
	}
return $currentstring;	return $currentstring;
}	}

Line 250 sub end_option {	Line 264 sub end_option {
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	} elsif ($target eq 'tex') {
	$currentstring='}';
	}
return $currentstring;	return $currentstring;
}	}

#-- <input> tag	#-- <input> tag (end tag forbidden)
sub start_input {	sub start_input {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 273 sub end_input {	Line 289 sub end_input {
return $currentstring;	return $currentstring;
}	}

#-- <textarea> tag	#-- <textarea> tag (end tag required)
sub start_textarea {	sub start_textarea {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 292 sub end_textarea {	Line 308 sub end_textarea {
return $currentstring;	return $currentstring;
}	}

#-- <form> tag	#-- <form> tag (end tag required)
sub start_form {	sub start_form {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 311 sub end_form {	Line 327 sub end_form {
return $currentstring;	return $currentstring;
}	}

#-- <title> tag	#-- <title> tag (end tag required)
sub start_title {	sub start_title {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\keephidden{'	$currentstring .= '\keephidden{Title of the document: '
}	}
if ($target eq 'meta') {	if ($target eq 'meta') {
$currentstring='<title>';	$currentstring='<title>';
&start_output();	&start_output($target);
}	}
return $currentstring;	return $currentstring;
}	}
Line 336 sub end_title {	Line 352 sub end_title {
$currentstring .= '}';	$currentstring .= '}';
}	}
if ($target eq 'meta') {	if ($target eq 'meta') {
&end_output();	&end_output($target);
$currentstring='</title>';	$currentstring='</title>';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <meta> tag	#-- <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) = @_;
my $currentstring = '';	my $currentstring = '';
Line 354 sub start_meta {	Line 370 sub start_meta {
} else {	} else {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
}	} elsif ($target eq 'meta') {
if ($target eq 'meta') {
unless (&Apache::lonxml::get_param	unless (&Apache::lonxml::get_param
('http-equiv',$parstack,$safeeval,undef,1)) {	('http-equiv',$parstack,$safeeval,undef,1)) {
my $name=$token->[2]->{'name'};	my $name=$token->[2]->{'name'};
Line 363 sub start_meta {	Line 378 sub start_meta {
$name=~s/\s/\_/gs;	$name=~s/\s/\_/gs;
$name=~s/\W//gs;	$name=~s/\W//gs;
if ($name) {	if ($name) {
$currentstring='<'.$name.'>'.	$currentstring='<'.$name;
	my $display=&Apache::lonxml::get_param
	('display',$parstack,$safeeval,undef,1);
	if ($display) {
	$display=~s/\"/\'/g;
	$currentstring.=' display="'.$display.'"';
	}
	$currentstring.='>'.
&Apache::lonxml::get_param	&Apache::lonxml::get_param
('content',$parstack,$safeeval,undef,1).	('content',$parstack,$safeeval,undef,1).
'</'.$name.'>';	'</'.$name.'>';
}	}
	my $display=&Apache::lonxml::get_param
	('display',$parstack,$safeeval,undef,1);
	if ($display) {
	$display=&HTML::Entities::encode($display);
	$currentstring.='<'.$name.'.display>'.$display.
	'</'.$name.'.display>';
	}
	}
	} elsif ($target eq 'tex') {
	my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
	my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
	if ((not defined $content) && (not defined $name)) {
	&Apache::lonxml::startredirection();
}	}
}	}
return $currentstring;	return $currentstring;
}	}

sub end_meta {	sub end_meta {
my ($target,$token,$tagstack,$parstack,$parser) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
my $args='';	my $args='';
Line 382 sub end_meta {	Line 417 sub end_meta {
if ($args ne '') {	if ($args ne '') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
}	} elsif ($target eq 'tex') {
	my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
	my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
	if ((not defined $content) && (not defined $name)) {
	&Apache::lonxml::endredirection();
	}
	}
return $currentstring;	return $currentstring;
}	}

Line 394 sub start_accessrule {	Line 435 sub start_accessrule {
('effect',$parstack,$safeeval,undef,1);	('effect',$parstack,$safeeval,undef,1);
my $realm=&Apache::lonxml::get_param	my $realm=&Apache::lonxml::get_param
('realm',$parstack,$safeeval,undef,1);	('realm',$parstack,$safeeval,undef,1);
my $cont=&Apache::lonxml::get_param	my $role=&Apache::lonxml::get_param
('content',$parstack,$safeeval,undef,1);	('role',$parstack,$safeeval,undef,1);
$cont=~s/\s+//g;	$realm=~s/\s+//g;
$cont=~s/\W/\;/g;	$realm=~s/\//\_/g;
	$realm=~s/^\_//;
	$realm=~s/\W/\;/g;
	$role=~s/\s+//g;
	$role=~s/\//\_/g;
	$role=~s/\W/\;/g;
if ($target eq 'web') {	if ($target eq 'web') {
my $args='';	my $args='';
if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }	if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
Line 408 sub start_accessrule {	Line 454 sub start_accessrule {
}	}
}	}
if ($target eq 'meta') {	if ($target eq 'meta') {
$currentstring='<rule>'.$eff.':'.$realm.':'.$cont.'</rule>';	$currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
}	}
return $currentstring;	return $currentstring;
}	}
Line 426 sub end_accessrule {	Line 472 sub end_accessrule {
return $currentstring;	return $currentstring;
}	}

#-- <body> tag	#-- <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 ($target eq 'web') {
if (!$Apache::lonxml::registered) {	if ($Apache::lonhomework::parsing_a_problem) {
	&Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
	return '';
	}
	if (!$Apache::lonxml::registered &&
	$ENV{'request.state'} eq 'published') {
$currentstring.='<head>'.	$currentstring.='<head>'.
&Apache::lonmenu::registerurl(undef,$target).'</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='';	my $onLoad='';
foreach my $key (keys(%{$token->[2]})) {	foreach my $key (keys(%{$token->[2]})) {
if ($key =~ /^onload$/i) {	if ($key =~ /^onload$/i) {
Line 479 sub end_body {	Line 553 sub end_body {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\end{document}';	$currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <center> tag	#-- <center> tag (end tag required)
sub start_center {	sub start_center {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 492 sub start_center {	Line 566 sub start_center {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\begin{center}';	$currentstring = '\begin{center}';
} elsif ($target eq 'latexsource') {	}
$currentstring = '\begin{center}';
}
return $currentstring;	return $currentstring;
}	}

Line 505 sub end_center {	Line 577 sub end_center {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\end{center}';	$currentstring = '\end{center}';
} elsif ($target eq 'latexsource') {	}
$currentstring = '\end{center}';
}
return $currentstring;	return $currentstring;
}	}

#-- <b> tag	#-- <b> tag (end tag required)
sub start_b {	sub start_b {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 519 sub start_b {	Line 589 sub start_b {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\textbf{';	$currentstring = '\textbf{';
} elsif ($target eq 'latexsource') {
$currentstring = '\textbf{';
}	}
return $currentstring;	return $currentstring;
}	}
Line 532 sub end_b {	Line 600 sub end_b {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '}';	$currentstring = '}';
} elsif ($target eq 'latexsource') {
$currentstring = '}';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <strong> tag	#-- <strong> tag (end tag required)
sub start_strong {	sub start_strong {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 546 sub start_strong {	Line 612 sub start_strong {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\textbf{';	$currentstring = '\textbf{';
} elsif ($target eq 'latexsource') {
$currentstring = '\textbf{';
}	}
return $currentstring;	return $currentstring;
}	}
Line 555 sub start_strong {	Line 619 sub start_strong {
sub end_strong {	sub end_strong {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {

$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '}';	$currentstring = '}';
} elsif ($target eq 'latexsource') {	}
$currentstring = '}';
}
return $currentstring;	return $currentstring;
}	}

#-- <h1> tag	#-- <h1> tag (end tag required)
sub start_h1 {	sub start_h1 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '{\large \textbf{';	my $pre;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$pre='\begin{center}';
	} elsif ($align eq 'left') {
	$pre='\rlap{';
	} elsif ($align eq 'right') {
	$pre=' \hfill \llap{';
	}
	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
	if (not defined $TeXsize) {$TeXsize="large";}
	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
} elsif ($target eq 'meta') {	} elsif ($target eq 'meta') {
$currentstring='<subject>';	$currentstring='<subject>';
&start_output();	&start_output($target);
}	}
return $currentstring;	return $currentstring;
}	}

sub end_h1 {	sub end_h1 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}}';	my $post;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$post='\end{center}';
	} elsif ($align eq 'left') {
	$post='} \hfill'.'\vskip 0 mm ';
	} elsif ($align eq 'right') {
	$post='}'.'\vskip 0 mm ';
	}
	$currentstring .= '}}'.$post;
} elsif ($target eq 'meta') {	} elsif ($target eq 'meta') {
&end_output();	&end_output($target);
$currentstring='</subject>';	$currentstring='</subject>';
}	}
return $currentstring;	return $currentstring;
Line 597 sub end_h1 {	Line 678 sub end_h1 {

#-- <h2> tag	#-- <h2> tag
sub start_h2 {	sub start_h2 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '{\large \textbf{';	my $pre;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$pre='\begin{center}';
	} elsif ($align eq 'left') {
	$pre='\rlap{';
	} elsif ($align eq 'right') {
	$pre=' \hfill \llap{';
	}
	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
	if (not defined $TeXsize) {$TeXsize="large";}
	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

sub end_h2 {	sub end_h2 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}}';	my $post;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$post='\end{center}';
	} elsif ($align eq 'left') {
	$post='} \hfill'.'\vskip 0 mm ';
	} elsif ($align eq 'right') {
	$post='}'.'\vskip 0 mm ';
	}
	$currentstring .= '}}'.$post;
}	}
return $currentstring;	return $currentstring;
}	}

#-- <h3> tag	#-- <h3> tag
sub start_h3 {	sub start_h3 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '{\large \textbf{';	my $pre;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$pre='\begin{center}';
	} elsif ($align eq 'left') {
	$pre='\rlap{';
	} elsif ($align eq 'right') {
	$pre=' \hfill \llap{';
	}
	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
	if (not defined $TeXsize) {$TeXsize="large";}
	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

sub end_h3 {	sub end_h3 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}}';	my $post;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$post='\end{center}';
	} elsif ($align eq 'left') {
	$post='} \hfill'.'\vskip 0 mm ';
	} elsif ($align eq 'right') {
	$post='}'.'\vskip 0 mm ';
	}
	$currentstring .= '}}'.$post;
}	}
return $currentstring;	return $currentstring;
}	}

#-- <h4> tag	#-- <h4> tag
sub start_h4 {	sub start_h4 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '{\large \textbf{';	my $pre;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$pre='\begin{center}';
	} elsif ($align eq 'left') {
	$pre='\rlap{';
	} elsif ($align eq 'right') {
	$pre=' \hfill \llap{';
	}
	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
	if (not defined $TeXsize) {$TeXsize="large";}
	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

sub end_h4 {	sub end_h4 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}}';	my $post;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$post='\end{center}';
	} elsif ($align eq 'left') {
	$post='} \hfill'.'\vskip 0 mm ';
	} elsif ($align eq 'right') {
	$post='}'.'\vskip 0 mm ';
	}
	$currentstring .= '}}'.$post;
}	}
return $currentstring;	return $currentstring;
}	}

#-- <h5> tag	#-- <h5> tag
sub start_h5 {	sub start_h5 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '{\large \textbf{';	my $pre;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$pre='\begin{center}';
	} elsif ($align eq 'left') {
	$pre='\rlap{';
	} elsif ($align eq 'right') {
	$pre=' \hfill \llap{';
	}
	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
	if (not defined $TeXsize) {$TeXsize="large";}
	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

sub end_h5 {	sub end_h5 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}}';	my $post;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$post='\end{center}';
	} elsif ($align eq 'left') {
	$post='} \hfill'.'\vskip 0 mm ';
	} elsif ($align eq 'right') {
	$post='}'.'\vskip 0 mm ';
	}
	$currentstring .= '}}'.$post;
}	}
return $currentstring;	return $currentstring;
}	}

#-- <h6> tag	#-- <h6> tag
sub start_h6 {	sub start_h6 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '{\large \textbf{';	my $pre;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$pre='\begin{center}';
	} elsif ($align eq 'left') {
	$pre='\rlap{';
	} elsif ($align eq 'right') {
	$pre=' \hfill \llap{';
	}
	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
	if (not defined $TeXsize) {$TeXsize="large";}
	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';
}	}
return $currentstring;	return $currentstring;
}	}

sub end_h6 {	sub end_h6 {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}}';	my $post;
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$post='\end{center}';
	} elsif ($align eq 'left') {
	$post='} \hfill'.'\vskip 0 mm ';
	} elsif ($align eq 'right') {
	$post='}'.'\vskip 0 mm ';
	}
	$currentstring .= '}}'.$post;
}	}
return $currentstring;	return $currentstring;
}	}

#--- <cite> tag	#--- <cite> tag (end tag required)
sub start_cite {	sub start_cite {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "\\textit{";	$currentstring .= '\textit{';
} elsif ($target eq 'latexsource') {	}
$currentstring .= "\\textit{";
}
return $currentstring;	return $currentstring;
}	}

Line 730 sub end_cite {	Line 909 sub end_cite {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "}";	$currentstring .= '}';
} elsif ($target eq 'latexsource') {	}
$currentstring .= "}";
}
return $currentstring;	return $currentstring;
}	}

#-- <i> tag	#-- <i> tag (end tag required)
sub start_i {	sub start_i {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 745 sub start_i {	Line 922 sub start_i {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\textit{';	$currentstring .= '\textit{';
} elsif ($target eq 'latexsource') {	}
$currentstring .= '\textit{';
}
return $currentstring;	return $currentstring;
}	}

Line 758 sub end_i {	Line 933 sub end_i {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
} elsif ($target eq 'latexsource') {
$currentstring .= '}';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <address> tag	#-- <address> tag (end tag required)
sub start_address {	sub start_address {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "\\textit{";	$currentstring .= '\textit{';
} elsif ($target eq 'latexsource') {	}
$currentstring .= "\\textit{";
}
return $currentstring;	return $currentstring;
}	}

Line 784 sub end_address {	Line 955 sub end_address {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "}";	$currentstring .= '}';
} elsif ($target eq 'latexsource') {
$currentstring .= "}";
}	}
return $currentstring;	return $currentstring;
}	}

#-- <dfn> tag	#-- <dfn> tag (end tag required)
sub start_dfn {	sub start_dfn {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "\\textit{";	$currentstring .= '\textit{';
} elsif ($target eq 'latexsource') {
$currentstring .= "\\textit{";
}	}
return $currentstring;	return $currentstring;
}	}
Line 811 sub end_dfn {	Line 978 sub end_dfn {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "}";	$currentstring .= '}';
} elsif ($target eq 'latexsource') {	}
$currentstring .= "}";
}
return $currentstring;	return $currentstring;
}	}

#-- <tt> tag	#-- <tt> tag (end tag required)
sub start_tt {	sub start_tt {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 826 sub start_tt {	Line 991 sub start_tt {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\texttt{';	$currentstring .= '\texttt{';
} elsif ($target eq 'latexsource') {	}
$currentstring .= '\texttt{';
}
return $currentstring;	return $currentstring;
}	}

Line 839 sub end_tt {	Line 1002 sub end_tt {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
} elsif ($target eq 'latexsource') {
$currentstring .= '}';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <kbd> tag	#-- <kbd> tag (end tag required)
sub start_kbd {	sub start_kbd {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "\\texttt";	$currentstring .= '\texttt{';
} elsif ($target eq 'latexsource') {	}
$currentstring .= "\\texttt{";
}
return $currentstring;	return $currentstring;
}	}

Line 865 sub end_kbd {	Line 1024 sub end_kbd {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "}";	$currentstring .= '}';
} elsif ($target eq 'latexsource') {	}
$currentstring .= "}";
}
return $currentstring;	return $currentstring;
}	}

#-- <code> tag	#-- <code> tag (end tag required)
sub start_code {	sub start_code {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 895 sub end_code {	Line 1052 sub end_code {
return $currentstring;	return $currentstring;
}	}

#-- <em> tag	#-- <em> tag (end tag required)
sub start_em {	sub start_em {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 903 sub start_em {	Line 1060 sub start_em {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\emph{';	$currentstring .= '\emph{';
} elsif ($target eq 'latexsource') {	}
$currentstring .= '\emph{';
}
return $currentstring;	return $currentstring;
}	}

Line 916 sub end_em {	Line 1071 sub end_em {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
} elsif ($target eq 'latexsource') {	}
$currentstring .= '}';
}
return $currentstring;	return $currentstring;
}	}

#-- <q> tag	#-- <q> tag (end tag required)
sub start_q {	sub start_q {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "\\emph{";	$currentstring .= '\emph{';
} elsif ($target eq 'latexsource') {
$currentstring .= "\\emph{";
}	}
return $currentstring;	return $currentstring;
}	}
Line 942 sub end_q {	Line 1093 sub end_q {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "}";	$currentstring .= '}';
} elsif ($target eq 'latexsource') {	}
$currentstring .= "}";
}
return $currentstring;	return $currentstring;
}	}

#-- <p> tag	#-- <p> tag (end tag optional)
	#optional attribute - align="center\|left\|right"
sub start_p {	sub start_p {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '{\par ';	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
} elsif ($target eq 'latexsource') {	if ($align eq 'center') {
$currentstring .= '{\par ';	$currentstring='\begin{center}\par';
}	} elsif ($align eq 'right') {
	$currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
	} elsif ($align eq 'left') {
	$currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
	}
	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;
}	}

sub end_p {	sub end_p {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	if ($$tagstack[-1] eq 'p') {
} elsif ($target eq 'latexsource') {	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
$currentstring .= '}';	if ($align eq 'center') {
	$currentstring .= '\end{center}';
	} elsif ($align eq 'right') {
	$currentstring .= '}}';
	} elsif ($align eq 'left') {
	$currentstring .= '}\hfill}';
	}
	}
}	}
return $currentstring;	return $currentstring;
}	}

#-- <br> tag	#-- <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 = '';
Line 984 sub start_br {	Line 1150 sub start_br {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {	if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
$currentstring .= '\vskip 0.2 mm';	$currentstring .= '\vskip 0.2 mm ';
}	}
} elsif ($target eq 'latexsource') {	}
$currentstring .= '\\';
}
return $currentstring;	return $currentstring;
}	}

Line 1001 sub end_br {	Line 1165 sub end_br {
return $currentstring;	return $currentstring;
}	}

#-- <big> tag	#-- <big> tag (end tag required)
sub start_big {	sub start_big {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\large{';	$currentstring .= '{\large ';
} elsif ($target eq 'latexsource') {	}
$currentstring .= '{\Large ';
}
return $currentstring;	return $currentstring;
}	}

Line 1022 sub end_big {	Line 1184 sub end_big {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
} elsif ($target eq 'latexsource') {
$currentstring .= '}';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <small> tag	#-- <small> tag (end tag required)
sub start_small {	sub start_small {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 1036 sub start_small {	Line 1196 sub start_small {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '{\footnotesize ';	$currentstring .= '{\footnotesize ';
} elsif ($target eq 'latexsource') {	}
$currentstring .= '{\footnotesize ';
}
return $currentstring;	return $currentstring;
}	}

Line 1049 sub end_small {	Line 1207 sub end_small {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '}';	$currentstring .= '}';
} elsif ($target eq 'latexsource') {
$currentstring .= '}';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <basefont> tag	#-- <basefont> tag (end tag forbidden)
sub start_basefont {	sub start_basefont {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	} elsif ($target eq 'tex') {
	my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
	if (defined $basesize) {
	$currentstring = '{\\'.$basesize.' ';
	}
	}
return $currentstring;	return $currentstring;
}	}

sub end_basefont {	sub end_basefont {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	} elsif ($target eq 'tex') {
	my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
	if (defined $basesize) {
	$currentstring = '}';
	}
	}
return $currentstring;	return $currentstring;
}	}

#-- <font> tag	#-- <font> tag (end tag required)
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') {
my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);	my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode++;}	if ($face=~/symbol/i) {
	$Apache::lonxml::prevent_entity_encode++;
	} else {
	if (($ENV{'browser.fontenhance'} eq 'on') \|\|
	($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
	}
$currentstring = $token->[4];	$currentstring = $token->[4];
}	} elsif ($target eq 'tex') {
	my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
	if (defined $fontsize) {
	$currentstring = '{\\'.$fontsize.' ';
	}
	}
return $currentstring;	return $currentstring;
}	}

Line 1093 sub end_font {	Line 1269 sub end_font {
my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);	my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;}	if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;}
$currentstring = $token->[2];	$currentstring = $token->[2];
}	} elsif ($target eq 'tex') {
	my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
	if (defined $fontsize) {
	$currentstring = '}';
	}
	}
return $currentstring;	return $currentstring;
}	}

#-- <strike> tag	#-- <strike> tag (end tag required)
sub start_strike {	sub start_strike {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 1123 sub end_strike {	Line 1304 sub end_strike {
return $currentstring;	return $currentstring;
}	}

#-- <s> tag	#-- <s> tag (end tag required)
sub start_s {	sub start_s {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 1149 sub end_s {	Line 1330 sub end_s {
return $currentstring;	return $currentstring;
}	}

#-- <sub> tag	#-- <sub> tag (end tag required)
sub start_sub {	sub start_sub {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "\$_{ ";	$currentstring .= "\$_{";
}	}
return $currentstring;	return $currentstring;
}	}
Line 1167 sub end_sub {	Line 1348 sub end_sub {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= " }\$";	$currentstring .= "}\$";
}	}
return $currentstring;	return $currentstring;
}	}

#-- <sup> tag	#-- <sup> tag (end tag required)
sub start_sup {	sub start_sup {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= "\$^{ ";	$currentstring .= "\$^{";
}	}
return $currentstring;	return $currentstring;
}	}
Line 1190 sub end_sup {	Line 1371 sub end_sup {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= " }\$";	$currentstring .= "}\$";
}	}
return $currentstring;	return $currentstring;
}	}

#-- <hr> tag	#-- <hr> tag (end tag forbidden)
sub start_hr {	sub start_hr {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\vskip 0 mm \noindent\makebox[\textwidth/2 ][b]{\hrulefill}\vskip 0 mm ';	my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
	if (defined $LaTeXwidth) {
	if ($LaTeXwidth=~/^%/) {
	substr($LaTeXwidth,0,1)='';
	$LaTeXwidth=($LaTeXwidth/100).'\textwidth';
	}
	} else {
	$LaTeXwidth ='0.9\textwidth';
	}
	my ($pre,$post);
	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
	if (($align eq 'center') \|\| (not defined $align)) {
	$pre=''; $post='';
	} elsif ($align eq 'left') {
	$pre='\rlap{'; $post='} \hfill';
	} elsif ($align eq 'right') {
	$pre=' \hfill \llap{'; $post='}';
	}
	$currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
	$LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
}	}
return $currentstring;	return $currentstring;
}	}
Line 1212 sub end_hr {	Line 1412 sub end_hr {
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {	}
}
return $currentstring;	return $currentstring;
}	}

#-- <div> tag	#-- <div> tag (end tag required)
sub start_div {	sub start_div {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 1236 sub end_div {	Line 1435 sub end_div {
return $currentstring;	return $currentstring;
}	}

#-- <a> tag	#-- <a> tag (end tag required)
sub start_a {	sub start_a {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
	my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
	my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
	if ($a=~/\S/) {
	$a=~s/([^\\])%/$1\\\%/g;
	$currentstring .= '\ref{URI: '.$a.'}';
	} elsif ($b=~/\S/) {
	$currentstring .= '\ref{Anchor: '.$b.'}';
	} else {
	$currentstring.='';
	}
}	}
return $currentstring;	return $currentstring;
}	}

sub end_a {	sub end_a {
my ($target,$token,$tagstack,$stackref) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring .= $token->[2];	$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
my $tempor_var = $stackref->[$#$stackref];
if (index($tempor_var,'name') != -1 ) {
$tempor_var =~ s/name=([^,]*),/$1/g;
} elsif (index($tempor_var,'href') != -1 ) {
$tempor_var =~ s/href=([^,]*),/$1/g;
$currentstring .= " \\ref{$tempor_var}";
}
}	}
return $currentstring;	return $currentstring;
}	}

#-- <li> tag	#-- <li> tag (end tag optional)
sub start_li {	sub start_li {
my ($target,$token,$tagstack,$stackref) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $tempor_var = $stackref->[$#$stackref];	my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
if (index($tempor_var,'circle') != -1 ) {	if ($type=~/circle/) {
$currentstring .= " \\item[o] ";	$currentstring .= ' \item[o] ';
} elsif (index($tempor_var,'square') != -1 ) {	} elsif ($type=~/square/) {
$currentstring .= " \\item[$\Box$] ";	$currentstring .= ' \item[$\Box$] ';
} elsif ($tempor_var ne '') {	} elsif ($type ne '') {
$_ = $tempor_var;	$currentstring .= ' \item['.$type.'] ';
m/my\s([^=])=/;
$currentstring .= " \\item[$1] ";
} else {	} else {
$currentstring .= " \\item ";	$currentstring .= ' \item ';
}	}
}	}
return $currentstring;	return $currentstring;
Line 1296 sub end_li {	Line 1495 sub end_li {
return $currentstring;	return $currentstring;
}	}

#-- <u> tag	#-- <u> tag (end tag required)
sub start_u {	sub start_u {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 1322 sub end_u {	Line 1521 sub end_u {
return $currentstring;	return $currentstring;
}	}

#-- <ul> tag	#-- <ul> tag (end tag required)
sub start_ul {	sub start_ul {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\begin{itemize}';	my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
	if ($TeXtype eq 'disc') {
	$currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}
	\renewcommand{\labelitemii}{$\bullet$}
	\renewcommand{\labelitemiii}{$\bullet$}
	\renewcommand{\labelitemiv}{$\bullet$}';
	} elsif ($TeXtype eq 'circle') {
	$currentstring .= ' \renewcommand{\labelitemi}{$\circ$}
	\renewcommand{\labelitemii}{$\circ$}
	\renewcommand{\labelitemiii}{$\circ$}
	\renewcommand{\labelitemiv}{$\circ$}';
	} elsif ($TeXtype eq 'square') {
	$currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}
	\renewcommand{\labelitemii}{$\diamond$}
	\renewcommand{\labelitemiii}{$\diamond$}
	\renewcommand{\labelitemiv}{$\diamond$}';
	}
	$currentstring .= '\begin{itemize}';
}	}
return $currentstring;	return $currentstring;
}	}
Line 1340 sub end_ul {	Line 1556 sub end_ul {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\end{itemize}';	$currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}
	\renewcommand{\labelitemii}{$\bullet$}
	\renewcommand{\labelitemiii}{$\bullet$}
	\renewcommand{\labelitemiv}{$\bullet$}';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <menu> tag	#-- <menu> tag (end tag required)
sub start_menu {	sub start_menu {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 1368 sub end_menu {	Line 1587 sub end_menu {
return $currentstring;	return $currentstring;
}	}

#-- <dir> tag	#-- <dir> tag (end tag required)
sub start_dir {	sub start_dir {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 1391 sub end_dir {	Line 1610 sub end_dir {
return $currentstring;	return $currentstring;
}	}

#-- <ol> tag	#-- <ol> tag (end tag required)
sub start_ol {	sub start_ol {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\begin{enumerate}';	my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
	if ($type eq '1') {
	$currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}
	\renewcommand{\labelenumii}{\arabic{enumii}.}
	\renewcommand{\labelenumiii}{\arabic{enumiii}.}
	\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
	} elsif ($type eq 'A') {
	$currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
	\renewcommand{\labelenumii}{\Alph{enumii}.}
	\renewcommand{\labelenumiii}{\Alph{enumiii}.}
	\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
	} elsif ($type eq 'a') {
	$currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}
	\renewcommand{\labelenumii}{\alph{enumii}.}
	\renewcommand{\labelenumiii}{\alph{enumiii}.}
	\renewcommand{\labelenumiv}{\alph{enumiv}.} ';
	} elsif ($type eq 'i') {
	$currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}
	\renewcommand{\labelenumii}{\roman{enumii}.}
	\renewcommand{\labelenumiii}{\roman{enumiii}.}
	\renewcommand{\labelenumiv}{\roman{enumiv}.} ';
	} elsif ($type eq 'I') {
	$currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}
	\renewcommand{\labelenumii}{\Roman{enumii}.}
	\renewcommand{\labelenumiii}{\Roman{enumiii}.}
	\renewcommand{\labelenumiv}{\Roman{enumiv}.} ';
	}
	$currentstring .= '\begin{enumerate}';
}	}
return $currentstring;	return $currentstring;
}	}
Line 1409 sub end_ol {	Line 1655 sub end_ol {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\end{enumerate}';	$currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}
	\renewcommand{\labelenumii}{\arabic{enumii}.}
	\renewcommand{\labelenumiii}{\arabic{enumiii}.}
	\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <dl> tag	#-- <dl> tag (end tag required)
sub start_dl {	sub start_dl {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\begin{description}';	$currentstring = '\begin{description}';
	@Apache::londefdef::description=();
	$Apache::londefdef::DD_redirection=0;
	$Apache::londefdef::DT_redirection=0;
}	}
return $currentstring;	return $currentstring;
}	}

sub end_dl {	sub end_dl {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\end{description}';	if ($Apache::londefdef::DT_redirection) {
	my $data=&item_cleanup;
	push @Apache::londefdef::description,'\item['.$data.']';
	$Apache::londefdef::DT_redirection=0;
	} elsif ($Apache::londefdef::DD_redirection) {
	$Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
	}
	foreach my $element (@Apache::londefdef::description) {
	$currentstring.=' '.$element.' ';
	}
	@Apache::londefdef::description=();
	$currentstring.='\end{description}';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <dt> tag	#-- <dt> tag (end tag optional)
sub start_dt {	sub start_dt {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring='';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = '\item[';	if ($Apache::londefdef::DT_redirection) {
	my $data=&item_cleanup;
	push @Apache::londefdef::description,'\item['.$data.']';
	$Apache::londefdef::DT_redirection=0;
	} elsif ($Apache::londefdef::DD_redirection) {
	$Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
	$Apache::londefdef::DD_redirection=0;
	}
	&Apache::lonxml::startredirection();
	$Apache::londefdef::DT_redirection=1;
}	}
return $currentstring;	return $currentstring;
}	}

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

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

	#-- <dd> tag (end tag optional)
sub start_dd {	sub start_dd {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
	} elsif ($target eq 'tex') {
	if ($Apache::londefdef::DT_redirection) {
	my $data=&item_cleanup;
	push @Apache::londefdef::description,'\item['.$data.']';
	$Apache::londefdef::DT_redirection=0;
	}
	$Apache::londefdef::DD_redirection=1;
	&Apache::lonxml::startredirection();
}	}
return $currentstring;	return $currentstring;
}	}

sub end_dd {	sub end_dd {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	} elsif ($target eq 'tex') {
	$Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
	$Apache::londefdef::DD_redirection=0;
	}
return $currentstring;	return $currentstring;
}	}

#-- <table> tag	#-- <table> tag (end tag required)
sub start_table {	sub start_table {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
	my $textwidth='';
	if (not defined @Apache::londefdef::table) {
	$textwidth=&recalc($ENV{'form.textwidth'});
	$textwidth=~/(\d+\.?\d*)/;
	$textwidth=0.95*$1;
	} else {
	$textwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
	}
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
Line 1489 sub start_table {	Line 1789 sub start_table {
my $aa = {};	my $aa = {};
push @Apache::londefdef::table, $aa;	push @Apache::londefdef::table, $aa;
$Apache::londefdef::table[-1]{'row_number'} = -1;	$Apache::londefdef::table[-1]{'row_number'} = -1;
$Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';	#table's width
	my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
	if (not defined $TeXwidth) {
	my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
	if ($htmlwidth=~/%/) {
	$htmlwidth=~/(\d+)/;
	my $value=$1*$textwidth/100;
	$Apache::londefdef::table[-1]{'width'}=$value;
	} else {
	$Apache::londefdef::table[-1]{'width'}=$textwidth;
	}
	} elsif ($TeXwidth=~/%/) {
	$TeXwidth=~/(\d+)/;
	my $value=$1*$textwidth/100;
	$Apache::londefdef::table[-1]{'width'}=$value;
	} else {
	$Apache::londefdef::table[-1]{'width'}=$textwidth;
	}
	#table's border
my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval,undef,1);	my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval,undef,1);
unless (defined $border) { $border = 0; }	unless (defined $border) { $border = 0; }
if ($border) {	if ($border) {
Line 1501 sub start_table {	Line 1819 sub start_table {
$Apache::londefdef::table[-1]{'vinc'} = '&';	$Apache::londefdef::table[-1]{'vinc'} = '&';
$Apache::londefdef::table[-1]{'vvinc'} = '';	$Apache::londefdef::table[-1]{'vvinc'} = '';
}	}
my $width;	$Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';
foreach my $key (keys(%{$token->[2]})) {	$currentstring = '\keephidden{NEW TABLE ENTRY}';
if ($key =~ /^width$/i) {
$width = &Apache::lonxml::get_param($key,$parstack,$safeeval,undef,1);
}
}
if (defined($width)) { $Apache::londefdef::table[-1]{'width'}=$width; }
}	}
return $currentstring;	return $currentstring;
}	}
Line 1522 sub end_table {	Line 1835 sub end_table {
my $output = '';	my $output = '';
#construct header of the table	#construct header of the table
my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};	my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
my $in;	for (my $in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {
for ($in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {
$header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};	$header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};
}	}
$header_of_table .= '}';	$header_of_table .= '}';
#fill the table
for ($in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
$output .= $Apache::londefdef::table[-1]{'rowdata'}[$in];
chop $output;
$output .= ' \\\\ ';
}
#define the length of the table cells	#define the length of the table cells
my @lengthforoutput = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);	#always starts with TeXwidth (if defined everything else is ignored)
my $how_many_columns = $#lengthforoutput + 1; #total number of columns in the table	my @length_row_final = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[0]);
my $filled_columns = 0; #number of columns with information about width	for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
my $available_space = ' ';	my @length_row = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[$in]);
foreach my $tempo_length (@{ $Apache::londefdef::table[-1]{'lengthrow'} }) {	for (my $jn=0;$jn<=$#length_row;$jn++) {
my @length = split(/,/,$tempo_length);	if ($length_row_final[$jn]<$length_row[$jn]) {$length_row_final[$jn]=$length_row[$jn];}
for (my $ico=0;$ico<=$#lengthforoutput;$ico++) {	}
$lengthforoutput[$ico] =~ m/(\d\.?\d)\s*(\w+)/;	}
my $old_value = $1;	#continues trying estimate the width of raw data
my $old_unit = $2;	my @length_raw_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);
if ($old_unit eq 'cm') {	for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
$old_value = $old_value * 10;	my @length_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[$in]);
} elsif ($old_unit eq 'in') {	for (my $jn=0;$jn<=$#length_row;$jn++) {
$old_value = $old_value * 25.4;	if ($length_raw_row[$jn]<$length_row[$jn]) {$length_raw_row[$jn]=$length_row[$jn];}
} elsif ($old_unit eq 'pt') {	}
$old_value = $old_value * 25.4/72.27;	}
} elsif ($old_unit eq 'pc') {	#comparing of TeXwidth and raw data width
$old_value = $old_value * 25.4/6.022;	my $available_length=$Apache::londefdef::table[-1]{'width'};
}	my $needed=0;
$old_unit = 'mm';	for (my $jn=0;$jn<=$#length_row_final;$jn++) {
$length[$ico] =~ m/(\d\.?\d)\s*(\w+)/;	if ($length_row_final[$jn]!=0) {
my $new_value = $1;	$available_length=$available_length-$length_row_final[$jn];
my $new_unit = $2;	$needed++;
if ($new_unit eq 'cm') {	}
$new_value = $new_value * 10;	}
} elsif ($old_unit eq 'in') {	$needed=$#length_row_final-$needed+1;
$new_value = $new_value * 25.4;	for (my $jn=0;$jn<=$#length_row_final;$jn++) {
} elsif ($old_unit eq 'pt') {	if ($length_row_final[$jn]==0) {
$new_value = $new_value * 25.4/72.27;	if ($length_raw_row[$jn]<$available_length) {
} elsif ($old_unit eq 'pc') {	$length_row_final[$jn]=$length_raw_row[$jn];
$new_value = $new_value * 25.4/6.022;	$available_length=$available_length-$length_raw_row[$jn];
}	$needed--;
$new_unit = 'mm';
if ($old_value < $new_value) {
$lengthforoutput[$ico] = $new_value.' mm';
} else {
$lengthforoutput[$ico] = $old_value.' mm';
}	}
}	}
}	}
for (my $ico=0;$ico<=$#lengthforoutput;$ico++) {	for (my $jn=0;$jn<=$#length_row_final;$jn++) {
if (not $lengthforoutput[$ico]=~m/^\s0\s\w\s$/) {	if ($length_row_final[$jn]==0) {
$filled_columns++;	$length_row_final[$jn]=0.9*$available_length/$needed;
$available_space = $available_space.' - '.$lengthforoutput[$ico];
}	}
}	}
my $temp_file;	#fill the table
my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.tbl";	for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
if (-e $filename) {	for (my $jn=0;$jn<=$#length_row_final;$jn++) {
$temp_file = Apache::File->new($filename);	my $substituted=$length_row_final[$jn];
my @tbl_file_content = <$temp_file>;	$Apache::londefdef::table[-1]{'rowdata'}[$in]=~s/TOBECHANGEDONNUMBER/$substituted mm/;
my ($one,$two,$three) = split(/,/,$tbl_file_content[0]);	}
$how_many_columns+=$one-1;	$output .= $Apache::londefdef::table[-1]{'rowdata'}[$in];
$filled_columns+=$two;	chop $output;
if($three=~/\S/) {$available_space = $available_space.' - '.$three;}	$output .= ' \\\\ ';
} else {
$temp_file = Apache::File->new('>>'.$filename);
}
print $temp_file "$how_many_columns,$filled_columns,$available_space\n";
$output =~ s/\\parbox{TOBECHANGEDONNUMBER}{}/\\parbox{1 mm}{}/g;
$output =~ s/\\parbox{TOBECHANGEDONNUMBER}/\\parbox{\$SpacePerColumn}/g;
my @tagar = @$tagstack;
my $signature = 1;
for (my $ico=0;$ico<$#tagar;$ico++) {
if ($tagar[$ico] eq 'table') { $signature = 0; }
}
if ($signature) {
my $NumberEmptyLength = $how_many_columns - $filled_columns;
my $SpacePerColumn = '(\textwidth '.$available_space.')/'.$NumberEmptyLength;
my $shorthand = ($filled_columns+1)*4;
$output =~ s/\$SpacePerColumn/$SpacePerColumn - $shorthand mm/g;
}
if ($how_many_columns==1) {
#start of block with width correction for one column table
$output=~s/^\s\\parbox\{([^\}])\}/\\parbox\{\\textwidth - 1 cm\}/;
#end of block with width correction for one column table
}	}
$Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm ';	$Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm ';
if ($#Apache::londefdef::table > 0) {	if ($#Apache::londefdef::table > 0) {
$inmemory = $Apache::londefdef::table[-1]{'output'};	my $inmemory = $Apache::londefdef::table[-1]{'output'};
pop @Apache::londefdef::table;	pop @Apache::londefdef::table;
$Apache::londefdef::table[-1]{'rowdata'}[$Apache::londefdef::table[-1]{'row_number'}] .= $inmemory	push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
} else {	} else {
$currentstring = $Apache::londefdef::table[-1]{'output'};	$currentstring .= $Apache::londefdef::table[-1]{'output'};
$currentstring =~ s/\\\\\s+\\\\/\\\\/g;
pop @Apache::londefdef::table;	pop @Apache::londefdef::table;
if (-e $filename) {	undef @Apache::londefdef::table;
unlink $filename;
}
}	}
}	}
return $currentstring;	return $currentstring;
}	}

#-- <tr> tag	#-- <tr> tag (end tag optional)
sub start_tr {	sub start_tr {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
Line 1644 sub start_tr {	Line 1920 sub start_tr {
}	}
push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});	push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
$Apache::londefdef::table[-1]{'counter_columns'} = -1;	$Apache::londefdef::table[-1]{'counter_columns'} = -1;
$Apache::londefdef::table[-1]{'length'} = '';	$Apache::londefdef::table[-1]{'TeXlength'} = '';
	$Apache::londefdef::table[-1]{'length'} = '';
}	}
return $currentstring;	return $currentstring;
}	}

sub end_tr {	sub end_tr {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
	if ($Apache::londefdef::TD_redirection) {
	&end_td_tex($parstack,$parser,$safeeval);
	}
	push @{ $Apache::londefdef::table[-1]{'TeXlengthrow'} },$Apache::londefdef::table[-1]{'TeXlength'};
push @{ $Apache::londefdef::table[-1]{'lengthrow'} },$Apache::londefdef::table[-1]{'length'};	push @{ $Apache::londefdef::table[-1]{'lengthrow'} },$Apache::londefdef::table[-1]{'length'};

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

#-- <td> tag	#-- <td> tag (end tag optional)
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') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);	$Apache::londefdef::TD_redirection = 1;
if ($what_to_push eq '') {	&tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
$what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
}
push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
$Apache::londefdef::table[-1]{'counter_columns'}++;
&Apache::lonxml::startredirection();
}	}
return $currentstring;	return $currentstring;
}	}

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

	sub start_td_tex {
	my ($parstack,$parser,$safeeval) = @_;
	my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
	if ($what_to_push eq '') {
	$what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
	}
	push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
	$Apache::londefdef::table[-1]{'counter_columns'}++;
	&Apache::lonxml::startredirection();
	return '';
	}

	sub end_td_tex {
	my ($parstack,$parser,$safeeval) = @_;
	my $current_row = $Apache::londefdef::table[-1]{'row_number'};
	my $data=&Apache::lonxml::endredirection();
	my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
	if (defined $TeXwidth) {
	my $current_length=&recalc($TeXwidth);
	$current_length=~/(\d+)/;
	$Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
	$Apache::londefdef::table[-1]{'length'} .= '0,';
	} else {
	if ($data=~m/width\s=\s(\d+\.?\d\s(mm\|cm\|in\|pc\|pt)*)/) {
	my $current_length=&recalc($1);
	$current_length=~/(\d+\.?\d*)/;
	$Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
	$Apache::londefdef::table[-1]{'length'} .= '0,';
	} else {
	$data=~s/^\s+(\S.*)/$1/;
	$data=~s/(.*\S)\s+$/$1/;
	$data=~s/(\s)+/$1/;
	my $current_length=0;
	if ($data=~/\\vskip/) {
	my $newdata=$data;
	$newdata=~s/\\vskip \d\.?\d\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
	my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
	foreach my $elementdata (@newdata) {
	my $lengthnewdata=1.8*LATEX_length($elementdata);
	if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
	}
	} else {
	$current_length=1.8*LATEX_length($data);
	}
	$Apache::londefdef::table[-1]{'length'} .= $current_length.',';
	$Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
	}
	}
	for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
	$data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
	}
	@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
	return'';
	}

sub end_td {	sub end_td {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
my $tempolen = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $current_row = $Apache::londefdef::table[-1]{'row_number'};	$Apache::londefdef::TD_redirection =0;
my $data=&Apache::lonxml::endredirection();	&end_td_tex($parstack,$parser,$safeeval);
if ($data=~m/width\s=\s(\d+\.?\d\s(mm\|cm\|in\|pc\|pt))/) {
$Apache::londefdef::table[-1]{'length'} .= $1.',';
$tempolen = $1;
} else {
if (length($data)<5) {
$Apache::londefdef::table[-1]{'length'} .= '0 mm,';
$tempolen = '6 mm';
} else {
$Apache::londefdef::table[-1]{'length'} .= '0 mm,';
$tempolen = 'TOBECHANGEDONNUMBER';
}
}
@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{'.$tempolen.'}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
}	}
return $currentstring;	return $currentstring;
}	}

#-- <th> tag	#-- <th> tag (end tag optional)
sub start_th {	sub start_th {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
Line 1719 sub start_th {	Line 2052 sub start_th {
push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;	push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
$Apache::londefdef::table[-1]{'counter_columns'}++;	$Apache::londefdef::table[-1]{'counter_columns'}++;
&Apache::lonxml::startredirection();	&Apache::lonxml::startredirection();
;
}	}
return $currentstring;	return $currentstring;
}	}

sub end_th {	sub end_th {
my ($target,$token) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
my $current_row = $Apache::londefdef::table[-1]{'row_number'};	my $current_row = $Apache::londefdef::table[-1]{'row_number'};
my $data=&Apache::lonxml::endredirection();	my $data=&Apache::lonxml::endredirection();
if ($data=~m/width\s=\s(\d+\.\d\s*(mm\|cm))/) {	my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
$Apache::londefdef::table[-1]{'length'} .= $1.',';	if (defined $TeXwidth) {
	my $current_length=&recalc($TeXwidth);
	$current_length=~/(\d+)/;
	$Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
	$Apache::londefdef::table[-1]{'length'} .= '0,';
} else {	} else {
$Apache::londefdef::table[-1]{'length'} .= '0 mm,';	if ($data=~m/width\s=\s(\d+\.?\d\s(mm\|cm\|in\|pc\|pt)*)/) {
}	my $current_length=&recalc($1);
@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{'.$1.'}{\textbf{'.$data.'}} '.$Apache::londefdef::table[-1]{'vinc'};	$current_length=~/(\d+)/;
	$Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
	$Apache::londefdef::table[-1]{'length'} .= '0,';
	} else {
	$data=~/^\s(\S.)/;
	$data=$1;
	$data=~/(.\S)\s$/;
	$data=$1;
	my $current_length=2*length($data);
	$Apache::londefdef::table[-1]{'length'} .= $current_length.',';
	$Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
	}
	}
	for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
	$data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
	}
	$data='\textbf{'.$data.'}';
	@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
}	}
return $currentstring;	return $currentstring;
}	}
	#-- <img> tag (end tag forbidden)
#-- <img> tag
sub start_img {	sub start_img {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
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')) {
	my $inside = &Apache::lonxml::get_all_text("/img",$parser);
	&Apache::lonnet::logthis("inside was $inside");
	return '';
	}
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;	$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
my $currentstring = '';	my $currentstring = '';
my $width_param = '';
my $height_param = '';
my $scaling = .3;	my $scaling = .3;

if ($target eq 'web') {	if ($target eq 'web') {
if ($ENV{'browser.imagesuppress'} ne 'on') {	if ($ENV{'browser.imagesuppress'} ne 'on') {
$currentstring = $token->[4];	$currentstring.= $token->[4];
} else {	} else {
my $alttag= &Apache::lonxml::get_param	my $alttag= &Apache::lonxml::get_param
('alt',$parstack,$safeeval,undef,1);	('alt',$parstack,$safeeval,undef,1);
Line 1763 sub start_img {	Line 2117 sub start_img {
$alttag=&Apache::lonmeta::alttag	$alttag=&Apache::lonmeta::alttag
($Apache::lonxml::pwd[-1],$src);	($Apache::lonxml::pwd[-1],$src);
}	}
$currentstring='[IMAGE: '.$alttag.']';	$currentstring.='[IMAGE: '.$alttag.']';
}	}
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);	$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
&image_replication($src);

#if original gif/jpg/png file exist do following:	#if original gif/jpg/png file exist do following:
if (-e $src) {	if (-e $src) {
#defines the default size of image	#what is the image size?
my $image = Image::Magick->new;	my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
my $current_figure = $image->Read($src);	my ($file,$path)=&file_path($src);
$width_param = $image->Get('width') * $scaling;;
$height_param = $image->Get('height') * $scaling;;
undef $image;
#do we have any specified size of the picture?
my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
undef,1);
if ($TeXwidth ne '') {
if ($TeXwidth=~/(\d+)\s*\%/) {
$width_param = $1*$ENV{'form.textwidth'}/100;
} else {
$width_param = $TeXwidth;
}
} elsif ($TeXheight ne '') {
$width_param = $TeXheight/$height_param*$width_param;
} elsif ($width ne '') {
$width_param = $width*$scaling;
}
my $file;
my $path;
if ($src =~ m!(.)/([^/])$!) {
$file = $2;
$path = $1.'/';
}
my $newsrc = $src;	my $newsrc = $src;
$newsrc =~ s/\.(gif\|jpg\|png)$/.eps/i;	$newsrc =~ s/\.(gif\|jpg\|png)$/.eps/i;
$file=~s/\.(gif\|jpg\|png)$/.eps/i;	$file=~s/\.(gif\|jpg\|png)$/.eps/i;
Line 1818 sub start_img {	Line 2145 sub start_img {
$currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';	$currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
}	}
} else {	} else {
#there aren't eps or ps - so create eps	#care about eps dynamical generation
my $temp_file;	$currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
$temp_file = Apache::File->new('>>'.$filename);
print $temp_file "$src\n";
$currentstring .= '\vskip 1 mm \graphicspath{{/home/httpd/prtspool/}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
}	}
}	}
} else {	} else {
Line 1840 sub start_img {	Line 2163 sub start_img {
#<allow> tag will care about replication	#<allow> tag will care about replication
}	}
}	}
	} elsif ($target eq 'edit') {
	$currentstring .=&Apache::edit::tag_start($target,$token);
	$currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
	&Apache::edit::browse('src',undef,'alt').' '.
	&Apache::edit::search('src',undef,'alt').'<br />';
	$currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
	$currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
	$currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
	$currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
	$currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
	$currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
	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 $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
	$currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
	if ($width) { $currentstring.=' width="'.$width.'" '; }
	if ($height) { $currentstring.=' height="'.$height.'" '; }
	$currentstring .= ' />';
	} elsif ($target eq 'modified') {
	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
	$safeeval,'src','alt',
	'TeXwidth','TeXheight',
	'width','height');
	$src=$token->[2]{'src'};
	if (!$token->[2]{'width'} && !$token->[2]{'height'}) {
	$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
	&image_replication($src);
	if (-e $src) {
	my $image = Image::Magick->new;
	my ($width, $height, $size, $format) = $image->Ping($src);
	if ($width && $height) {
	$token->[2]{'width'} =$width;
	$token->[2]{'height'}=$height;
	$constructtag=1;
	}
	}
	}
	if ($constructtag) {$currentstring=&Apache::edit::rebuild_tag($token);}
}	}
return $currentstring;	return $currentstring;
}	}
Line 1855 sub end_img {	Line 2217 sub end_img {
return $currentstring;	return $currentstring;
}	}

#-- <applet> tag	#-- <applet> tag (end tag required)
sub start_applet {	sub start_applet {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;

Line 1880 sub start_applet {	Line 2242 sub start_applet {
$currentstring='[APPLET: '.$alttag.']';	$currentstring='[APPLET: '.$alttag.']';
}	}
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\begin{figure} ";	my $alttag= &Apache::lonxml::get_param('alt',$parstack,
	$safeeval,undef,1);
	unless ($alttag) {
	my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
	undef,1);
	$alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
	$code);
	}
	$currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
	'.}\end{center}';
}	}
return $currentstring;	return $currentstring;
}	}
Line 1891 sub end_applet {	Line 2262 sub end_applet {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\end{figure}";
}	}
return $currentstring;	return $currentstring;
}	}

#-- <embed> tag	#-- <embed> tag (end tag optional/required)
sub start_embed {	sub start_embed {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);	my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
Line 1914 sub start_embed {	Line 2284 sub start_embed {
$currentstring='[EMBED: '.$alttag.']';	$currentstring='[EMBED: '.$alttag.']';
}	}
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\begin{figure} ";
}	}
return $currentstring;	return $currentstring;
}	}
Line 1924 sub end_embed {	Line 2293 sub end_embed {
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\end{figure}";
}	}
return $currentstring;	return $currentstring;
}	}

#-- <param> tag	#-- <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	if (&Apache::lonxml::get_param
Line 1944 sub start_param {	Line 2312 sub start_param {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\begin{figure} ";
}	}
return $currentstring;	return $currentstring;
}	}
Line 1955 sub end_param {	Line 2322 sub end_param {
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring = " \\end{figure}";
}	}
return $currentstring;	return $currentstring;
}	}
Line 1965 sub start_allow {	Line 2331 sub start_allow {
my ($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);	$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;	$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
	&Apache::lonnet::clutter($src);
&image_replication($src);	&image_replication($src);
my $result;	my $result;
if ($target eq 'edit') {	if ($target eq 'edit') {
Line 1986 sub end_allow {	Line 2353 sub end_allow {
return '';	return '';
}	}

#-- Frames	#-- Frames (end tag required)
	#-- <frameset>
sub start_frameset {	sub start_frameset {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
if (!$Apache::lonxml::registered) {	if (!$Apache::lonxml::registered &&
	$ENV{'request.state'} eq 'published') {
$currentstring.='<head>'.	$currentstring.='<head>'.
&Apache::lonmenu::registerurl(undef,$target).'</head>';	&Apache::lonmenu::registerurl(undef,$target).'</head>';
}	}
$currentstring .= $token->[4];	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;

	$currentstring .= '<'.$token->[1];
	foreach (keys %{$token->[2]}) {
	$currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
	}
	$currentstring.='>';
}	}
return $currentstring;	return $currentstring;
}	}
Line 2009 sub end_frameset {	Line 2400 sub end_frameset {
return $currentstring;	return $currentstring;
}	}

#-- <pre>	#-- <xmp> (end tag required)
sub start_pre {	sub start_xmp {
	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
	my $currentstring = '';
	if ($target eq 'web') {
	$currentstring .= $token->[4];
	} elsif ($target eq 'tex') {
	$currentstring .= '\begin{verbatim}';
	}
	return $currentstring;
	}

	sub end_xmp {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
	$currentstring .= $token->[2];
	} elsif ($target eq 'tex') {
	$currentstring .= '\end{verbatim}';
	}
	return $currentstring;
	}

	#-- <pre> (end tag required)
	sub start_pre {
	my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
	my $currentstring = '';
	if ($target eq 'web') {
$currentstring .= $token->[4];	$currentstring .= $token->[4];
} elsif ($target eq 'tex') {	} elsif ($target eq 'tex') {
$currentstring .= '\begin{verbatim}';	$currentstring .= '\begin{verbatim}';
Line 2092 sub end_blankspace {	Line 2506 sub end_blankspace {
return $currentstring;	return $currentstring;
}	}

#-- <abbr> tag	#-- <abbr> tag (end tag required)
sub start_abbr {	sub start_abbr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2111 sub end_abbr {	Line 2525 sub end_abbr {
return $currentstring;	return $currentstring;
}	}

#-- <acronym> tag	#-- <acronym> tag (end tag required)
sub start_acronym {	sub start_acronym {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2130 sub end_acronym {	Line 2544 sub end_acronym {
return $currentstring;	return $currentstring;
}	}

#-- <area> tag	#-- <area> tag (end tag forbidden)
sub start_area {	sub start_area {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2149 sub end_area {	Line 2563 sub end_area {
return $currentstring;	return $currentstring;
}	}

#-- <base> tag	#-- <base> tag (end tag forbidden)
sub start_base {	sub start_base {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	}
return $currentstring;	return $currentstring;
}	}

Line 2168 sub end_base {	Line 2582 sub end_base {
return $currentstring;	return $currentstring;
}	}

#-- <bdo> tag	#-- <bdo> tag (end tag required)
sub start_bdo {	sub start_bdo {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2187 sub end_bdo {	Line 2601 sub end_bdo {
return $currentstring;	return $currentstring;
}	}

#-- <bgsound> tag	#-- <bgsound> tag (end tag optional)
sub start_bgsound {	sub start_bgsound {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2206 sub end_bgsound {	Line 2620 sub end_bgsound {
return $currentstring;	return $currentstring;
}	}

#-- <blink> tag	#-- <blink> tag (end tag required)
sub start_blink {	sub start_blink {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2225 sub end_blink {	Line 2639 sub end_blink {
return $currentstring;	return $currentstring;
}	}

#-- <blockquote> tag	#-- <blockquote> tag (end tag required)
sub start_blockquote {	sub start_blockquote {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2244 sub end_blockquote {	Line 2658 sub end_blockquote {
return $currentstring;	return $currentstring;
}	}

#-- <button> tag	#-- <button> tag (end tag required)
sub start_button {	sub start_button {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2263 sub end_button {	Line 2677 sub end_button {
return $currentstring;	return $currentstring;
}	}

#-- <caption> tag	#-- <caption> tag (end tag required)
sub start_caption {	sub start_caption {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2282 sub end_caption {	Line 2696 sub end_caption {
return $currentstring;	return $currentstring;
}	}

#-- <col> tag	#-- <col> tag (end tag forbdden)
sub start_col {	sub start_col {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2301 sub end_col {	Line 2715 sub end_col {
return $currentstring;	return $currentstring;
}	}

#-- <colgroup> tag	#-- <colgroup> tag (end tag optional)
sub start_colgroup {	sub start_colgroup {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2320 sub end_colgroup {	Line 2734 sub end_colgroup {
return $currentstring;	return $currentstring;
}	}

#-- <del> tag	#-- <del> tag (end tag required)
sub start_del {	sub start_del {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2339 sub end_del {	Line 2753 sub end_del {
return $currentstring;	return $currentstring;
}	}

#-- <fieldset> tag	#-- <fieldset> tag (end tag required)
sub start_fieldset {	sub start_fieldset {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2358 sub end_fieldset {	Line 2772 sub end_fieldset {
return $currentstring;	return $currentstring;
}	}

#-- <frame> tag	#-- <frame> tag (end tag forbidden)
sub start_frame {	sub start_frame {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2377 sub end_frame {	Line 2791 sub end_frame {
return $currentstring;	return $currentstring;
}	}

#-- <iframe> tag	#-- <iframe> tag (end tag required)
sub start_iframe {	sub start_iframe {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2396 sub end_iframe {	Line 2810 sub end_iframe {
return $currentstring;	return $currentstring;
}	}

#-- <ins> tag	#-- <ins> tag (end tag required)
sub start_ins {	sub start_ins {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2415 sub end_ins {	Line 2829 sub end_ins {
return $currentstring;	return $currentstring;
}	}

#-- <isindex> tag	#-- <isindex> tag (end tag forbidden)
sub start_isindex {	sub start_isindex {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2434 sub end_isindex {	Line 2848 sub end_isindex {
return $currentstring;	return $currentstring;
}	}

#-- <keygen> tag	#-- <keygen> tag (end tag forbidden)
sub start_keygen {	sub start_keygen {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2472 sub end_label {	Line 2886 sub end_label {
return $currentstring;	return $currentstring;
}	}

#-- <layer> tag	#-- <layer> tag (end tag required)
sub start_layer {	sub start_layer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2491 sub end_layer {	Line 2905 sub end_layer {
return $currentstring;	return $currentstring;
}	}

#-- <legend> tag	#-- <legend> tag (end tag required)
sub start_legend {	sub start_legend {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2510 sub end_legend {	Line 2924 sub end_legend {
return $currentstring;	return $currentstring;
}	}

#-- <link> tag	#-- <link> tag (end tag forbidden)
sub start_link {	sub start_link {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2529 sub end_link {	Line 2943 sub end_link {
return $currentstring;	return $currentstring;
}	}

#-- <marquee> tag	#-- <marquee> tag (end tag optional)
sub start_marquee {	sub start_marquee {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2548 sub end_marquee {	Line 2962 sub end_marquee {
return $currentstring;	return $currentstring;
}	}

#-- <malticol> tag	#-- <multicol> tag (end tag required)
sub start_malticol {	sub start_multicol {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
Line 2558 sub start_malticol {	Line 2972 sub start_malticol {
return $currentstring;	return $currentstring;
}	}

sub end_malticol {	sub end_multicol {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
Line 2567 sub end_malticol {	Line 2981 sub end_malticol {
return $currentstring;	return $currentstring;
}	}

#-- <nobr> tag	#-- <nobr> tag (end tag required)
sub start_nobr {	sub start_nobr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	} elsif ($target eq 'tex') {
	$currentstring='\mbox{';
	}
return $currentstring;	return $currentstring;
}	}

Line 2582 sub end_nobr {	Line 2998 sub end_nobr {
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	} elsif ($target eq 'tex') {
	$currentstring='}';
	}
return $currentstring;	return $currentstring;
}	}

#-- <noembed> tag	#-- <noembed> tag (end tag required)
sub start_noembed {	sub start_noembed {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2605 sub end_noembed {	Line 3023 sub end_noembed {
return $currentstring;	return $currentstring;
}	}

#-- <noframes> tag	#-- <noframes> tag (end tag required)
sub start_noframes {	sub start_noframes {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2624 sub end_noframes {	Line 3042 sub end_noframes {
return $currentstring;	return $currentstring;
}	}

#-- <nolayer> tag	#-- <nolayer> tag (end tag required)
sub start_nolayer {	sub start_nolayer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2643 sub end_nolayer {	Line 3061 sub end_nolayer {
return $currentstring;	return $currentstring;
}	}

#-- <noscript> tag	#-- <noscript> tag (end tag required)
sub start_noscript {	sub start_noscript {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2662 sub end_noscript {	Line 3080 sub end_noscript {
return $currentstring;	return $currentstring;
}	}

#-- <object> tag	#-- <object> tag (end tag required)
sub start_object {	sub start_object {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2681 sub end_object {	Line 3099 sub end_object {
return $currentstring;	return $currentstring;
}	}

#-- <optgroup> tag	#-- <optgroup> tag (end tag required)
sub start_optgroup {	sub start_optgroup {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2700 sub end_optgroup {	Line 3118 sub end_optgroup {
return $currentstring;	return $currentstring;
}	}

#-- <samp> tag	#-- <samp> tag (end tag required)
sub start_samp {	sub start_samp {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	} elsif ($target eq 'tex') {
	$currentstring='\texttt{';
	}
return $currentstring;	return $currentstring;
}	}

Line 2715 sub end_samp {	Line 3135 sub end_samp {
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
}	} elsif ($target eq 'tex') {
	$currentstring='}';
	}
return $currentstring;	return $currentstring;
}	}

Line 2738 sub end_server {	Line 3160 sub end_server {
return $currentstring;	return $currentstring;
}	}

#-- <spacer> tag	#-- <spacer> tag (end tag forbidden)
sub start_spacer {	sub start_spacer {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2757 sub end_spacer {	Line 3179 sub end_spacer {
return $currentstring;	return $currentstring;
}	}

#-- <span> tag	#-- <span> tag (end tag required)
sub start_span {	sub start_span {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2776 sub end_span {	Line 3198 sub end_span {
return $currentstring;	return $currentstring;
}	}

#-- <tbody> tag	#-- <tbody> tag (end tag optional)
sub start_tbody {	sub start_tbody {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2795 sub end_tbody {	Line 3217 sub end_tbody {
return $currentstring;	return $currentstring;
}	}

#-- <tfoot> tag	#-- <tfoot> tag (end tag optional)
sub start_tfoot {	sub start_tfoot {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2814 sub end_tfoot {	Line 3236 sub end_tfoot {
return $currentstring;	return $currentstring;
}	}

#-- <thead> tag	#-- <thead> tag (end tag optional)
sub start_thead {	sub start_thead {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2839 sub start_var {	Line 3261 sub start_var {
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[4];	$currentstring = $token->[4];
}	} elsif ($target eq 'tex') {
	$currentstring = '\textit{';
	}
return $currentstring;	return $currentstring;
}	}

Line 2847 sub end_var {	Line 3271 sub end_var {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
if ($target eq 'web') {	if ($target eq 'web') {
$currentstring = $token->[2];	$currentstring = $token->[2];
	} elsif ($target eq 'tex') {
	$currentstring = '}';
}	}
return $currentstring;	return $currentstring;
}	}

#-- <wbr> tag	#-- <wbr> tag (end tag forbidden)
sub start_wbr {	sub start_wbr {
my ($target,$token) = @_;	my ($target,$token) = @_;
my $currentstring = '';	my $currentstring = '';
Line 2871 sub end_wbr {	Line 3297 sub end_wbr {
return $currentstring;	return $currentstring;
}	}

	#-- <hideweboutput> tag
	sub start_hideweboutput {
	my ($target,$token) = @_;
	if ($target eq 'web') {
	&Apache::lonxml::startredirection();
	}
	return '';
	}

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


sub image_replication {	sub image_replication {
my $src = shift;	my $src = shift;
if (not -e $src) {	if (not -e $src) { &Apache::lonnet::repcopy($src); }
#replicates image itself	#replicates eps or ps
&Apache::lonnet::repcopy($src);	my $epssrc = my $pssrc = $src;
#replicates eps or ps	$epssrc =~ s/\.(gif\|jpg\|jpeg\|png)$/.eps/i;
my $newsrc = $src;	$pssrc =~ s/\.(gif\|jpg\|jpeg\|png)$/.ps/i;
$newsrc =~ s/\.(gif\|jpg\|jpeg\|png)$/.eps/i;	if (not -e $epssrc && not -e $pssrc) {
if (not -e $newsrc) {	my $result=&Apache::lonnet::repcopy($epssrc);
if (&Apache::lonnet::repcopy($newsrc) ne 'OK') {	if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }
$newsrc =~ s/\.eps$/\.ps/;
&Apache::lonnet::repcopy($newsrc);
}
}
}	}
return '';	return '';
}	}

	sub image_size {
	my ($src,$scaling,$parstack,$safeeval)=@_;
	#size of image from gif/jpg/jpeg/png
	my $image = Image::Magick->new;
	my $current_figure = $image->Read($src);
	my $width_param = $image->Get('width') * $scaling;;
	my $height_param = $image->Get('height') * $scaling;;
	undef $image;
	#do we have any specified LaTeX size of the picture?
	my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
	my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
	#do we have any specified web size of the picture?
	my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
	undef,1);
	if ($TeXwidth ne '') {
	if ($TeXwidth=~/(\d+)\s*\%/) {
	$width_param = $1*$ENV{'form.textwidth'}/100;
	} else {
	$width_param = $TeXwidth;
	}
	} elsif ($TeXheight ne '') {
	$width_param = $TeXheight/$height_param*$width_param;
	} elsif ($width ne '') {
	$width_param = $width*$scaling;
	}
	if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
	return $width_param;
	}

	sub eps_generation {
	my ($src,$file,$width_param) = @_;
	my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
	my $temp_file = Apache::File->new('>>'.$filename);
	print $temp_file "$src\n";
	my $newsrc = $src;
	$newsrc =~ s/(\.gif\|\.jpg\|\.jpeg)$/\.eps/i;
	$newsrc=~s/\/home\/httpd\/html\/res//;
	$newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
	$newsrc=~s/\/\.\//\//;
	$newsrc=~s/\/([^\/]+)\.(ps\|eps)/\//;
	return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
	}

	sub file_path {
	my $src=shift;
	my ($file,$path);
	if ($src =~ m!(.)/([^/])$!) {
	$file = $2;
	$path = $1.'/';
	}
	return $file,$path;
	}

	sub recalc {
	my $argument = shift;
	if (not $argument=~/(mm\|cm\|in\|pc\|pt)/) {return $argument.' mm';}
	$argument=~/\s(\d+\.?\d)\s*(mm\|cm\|in\|pc\|pt)/;
	my $value=$1;
	my $units=$2;
	if ($units eq 'cm') {
	$value*=10;
	} elsif ($units eq 'in') {
	$value*=25.4;
	} elsif ($units eq 'pc') {
	$value=(25.412/72.27);
	} elsif ($units eq 'pt') {
	$value*=(25.4/72.27);
	}
	return $value.' mm';
	}

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




1;	1;
__END__	__END__

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