--- loncom/xml/londefdef.pm 2003/10/21 13:36:32 1.184 +++ loncom/xml/londefdef.pm 2007/04/06 10:41:45 1.364 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # Tags Default Definition Module # -# $Id: londefdef.pm,v 1.184 2003/10/21 13:36:32 sakharuk Exp $ +# $Id: londefdef.pm,v 1.364 2007/04/06 10:41:45 foxr Exp $ # # # Copyright Michigan State University Board of Trustees @@ -36,22 +36,20 @@ # The C source of the Code may not be distributed by the Licensee # to any other parties under any circumstances. # -# -# last modified 06/26/00 by Alexander Sakharuk -# 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer -# 01/18 Alex Sakharuk package Apache::londefdef; -use Apache::lonnet(); +use Apache::lonnet; use strict; use Apache::lonxml; use Apache::File(); use Image::Magick; use Apache::lonmenu(); use Apache::lonmeta(); - -$Apache::londefdef::TD_redirection=0; +use Apache::Constants qw(:common); +use File::Basename; +use LONCAPA(); +# use Data::Dumper; BEGIN { @@ -59,6 +57,33 @@ BEGIN { } +# +# Dumps all elements of the table structure. +# Need this 'cause evidently when given an array, Data::Dumper only seems +# to dump element 0. +# +#sub debug_dump_table { +# my $lastrow = $#Apache::londefdef::table; +# &Apache::lonnet::logthis("Dumping table: Last row index: $lastrow"); +# my $row; +# for ($row =0; $row <= $lastrow; $row++ ) { +# my $text = Dumper($Apache::londefdef::table[$row]); +# &Apache::lonnet::logthis("table [ $row ]".$text); +# } +#} +sub initialize_londefdef { + $Apache::londefdef::TD_redirection=0; + @Apache::londefdef::table = (); + $Apache::londefdef::select=0; + undef(@Apache::londefdef::description); + @Apache::londefdef::DD=(0); + @Apache::londefdef::DT=(0); + @Apache::londefdef::seenDT=(0); + $Apache::londefdef::list_index=0; + undef($Apache::londefdef::head); + undef($Apache::londefdef::title); +} + #======================= TAG SUBROUTINES ===================== #-- sub start_output { @@ -73,36 +98,53 @@ sub end_output { } #-- tag sub start_m { - my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $currentstring = ''; - if ($target eq 'web') { - $Apache::lonxml::prevent_entity_encode++; - my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser); - $inside ='\\documentstyle{article}'.$inside; + my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser); + if ($target eq 'web' || $target eq 'analyze') { &Apache::lonxml::debug("M is starting with:$inside:"); my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval); if ($eval eq 'on') { $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]); #&Apache::lonxml::debug("M is evaulated to:$inside:"); } - $currentstring = &Apache::lontexconvert::converted(\$inside); + my $tex = $inside; + my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval); + $currentstring = &Apache::lontexconvert::converted(\$inside,$display); if ($Apache::lontexconvert::errorstring) { - &Apache::lonxml::warning("tth error: ". - $Apache::lontexconvert::errorstring); + my $errormsg='
'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'
occured while attempting to convert this TeX: 
';
+	    $tex = &HTML::Entities::encode($tex,'<>&"');
+	    my ($linenumber) =
+		($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
+	    if (defined($linenumber)) {
+		my @tex=split("\n",$tex);
+		$tex[$linenumber]=''.
+		    $tex[$linenumber].'';
+		$tex=join("\n",@tex);
+	    }
+	    &Apache::lonxml::warning($errormsg.$tex.'
'); $Apache::lontexconvert::errorstring=''; } #&Apache::lonxml::debug("M is ends with:$currentstring:"); $Apache::lonxml::post_evaluate=0; } elsif ($target eq 'tex') { - $currentstring = &Apache::lonxml::get_all_text_unbalanced("/m",$parser); + + $currentstring = $inside; my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval); if ($eval eq 'on') { $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]); } if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';} + # detect simple math mode entry exits, and convert them + # to use \ensuremath ... unless there's a \verb inside. + if (! ($currentstring=~/\\verb/)) { + if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) { + $currentstring=~s/^(\s*)\$/$1/; + $currentstring=~s/\$(\s*)$/$1/; + $currentstring='\ensuremath{'.$currentstring.'}'; + } + } $Apache::lonxml::post_evaluate=0; - } else { - my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser); } return $currentstring; } @@ -110,22 +152,20 @@ sub start_m { sub end_m { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { - $Apache::lonxml::prevent_entity_encode--; - } elsif ($target eq 'tex') { + if ($target eq 'tex') { $currentstring = ""; - } elsif ($target eq 'meta') { } return $currentstring; } sub start_tthoption { - my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $result; - if ($target eq 'web') { - my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser); + if ($target eq 'web' || $target eq 'webgrade') { + my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser, + $style); $inside=~s/^\s*//; - if ($ENV{'browser.mathml'}) { + if ($env{'browser.mathml'}) { &tth::ttmoptions($inside); } else { &tth::tthoptions($inside); @@ -144,46 +184,40 @@ sub end_tthoption { sub start_html { my ($target,$token) = @_; my $currentstring = ''; - if ($ENV{'browser.mathml'}) { - &tth::ttminit(); - if ($ENV{'browser.unicode'}) { - &tth::ttmoptions('-L -u1'); - } else { - &tth::ttmoptions('-L -u0'); - } - } else { - &tth::tthinit(); - if ($ENV{'browser.unicode'}) { - &tth::tthoptions('-L -u1'); - } else { - &tth::tthoptions('-L -u0'); - } - } - if ($target eq 'web') { - $currentstring = &Apache::lonxml::xmlbegin(). - &Apache::lonxml::fontsettings(); + if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) { + # start_body() takes care of emitting the } elsif ($target eq 'tex') { - @Apache::londefdef::table = (); - $currentstring .= '\documentclass[letterpaper]{article}'; - if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';} - $currentstring .= '\newcommand{\keephidden}[1]{} - \renewcommand{\deg}{$^{\circ}$} - \usepackage{longtable} - \usepackage{textcomp} - \usepackage{makeidx} - \usepackage[dvips]{graphicx} - \usepackage{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}} -\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}'; + $currentstring .= + '\documentclass[letterpaper,twoside]{article}\raggedbottom'; + if (($env{'form.latex_type'}=~'batchmode') || + (!$env{'request.role.adv'})) {$currentstring .='\batchmode';} + $currentstring .= '\newcommand{\keephidden}[1]{}'. + '\renewcommand{\deg}{$^{\circ}$}'. + '\usepackage{multirow}'. + '\usepackage{longtable}'. + '\usepackage{textcomp}'. + '\usepackage{makeidx}'. + '\usepackage[dvips]{graphicx}'. + '\usepackage{wrapfig}'. + '\usepackage{picins}'. + '\usepackage{epsfig}'. + '\usepackage{calc}'. + '\usepackage{amsmath}'. + '\usepackage{amssymb}'. + '\usepackage{amsfonts}'. + '\usepackage{amsthm}'. + '\usepackage{amscd}'. + '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'. + '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}'; } return $currentstring; } sub end_html { - my ($target,$token) = @_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { - $currentstring = &Apache::lonxml::xmlend(); + if ($target eq 'web' || $target eq 'webgrade') { + # end_body takes care of the } return $currentstring; } @@ -192,8 +226,8 @@ sub end_html { sub start_head { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; + if ($target eq 'web' || $target eq 'webgrade') { + &Apache::lonxml::startredirection(); } return $currentstring; } @@ -201,9 +235,12 @@ sub start_head { sub end_head { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web' && $ENV{'request.state'} eq 'published') { - $currentstring = &Apache::lonmenu::registerurl(undef,$target). - $token->[2]; + if (($target eq 'web' && $env{'request.state'} eq 'published') || + ($target eq 'webgrade' && $env{'request.state'} eq 'published')) { + # in case there is a but no + if ($Apache::lonxml::redirection) { + $Apache::londefdef::head = &Apache::lonxml::endredirection(); + } } return $currentstring; } @@ -212,7 +249,7 @@ sub end_head { sub start_map { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; @@ -221,7 +258,7 @@ sub start_map { sub end_map { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; @@ -231,7 +268,7 @@ sub end_map { sub start_select { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $Apache::londefdef::select=0; @@ -242,7 +279,7 @@ sub start_select { sub end_select { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; @@ -252,7 +289,7 @@ sub end_select { sub start_option { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $Apache::londefdef::select++; @@ -268,7 +305,7 @@ sub start_option { sub end_option { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring='}'; @@ -280,7 +317,7 @@ sub end_option { sub start_input { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; @@ -289,7 +326,7 @@ sub start_input { sub end_input { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; @@ -299,7 +336,7 @@ sub end_input { sub start_textarea { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; @@ -308,7 +345,7 @@ sub start_textarea { sub end_textarea { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; @@ -318,7 +355,7 @@ sub end_textarea { sub start_form { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; @@ -327,7 +364,7 @@ sub start_form { sub end_form { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; @@ -335,16 +372,17 @@ sub end_form { #-- tag (end tag required) sub start_title { - my ($target,$token) = @_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; + if ($target eq 'web' || $target eq 'webgrade') { + $Apache::londefdef::title = + &Apache::lonxml::get_all_text('/title',$parser,$style); } elsif ($target eq 'tex') { $currentstring .= '\keephidden{Title of the document: ' } if ($target eq 'meta') { $currentstring='<title>'; - &start_output(); + &start_output($target); } return $currentstring; } @@ -352,13 +390,13 @@ sub start_title { sub end_title { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; + if ($target eq 'web' || $target eq 'webgrade') { + # start_title takes care of swallowing the title } elsif ($target eq 'tex') { $currentstring .= '}'; } if ($target eq 'meta') { - &end_output(); + &end_output($target); $currentstring=''; } return $currentstring; @@ -366,13 +404,13 @@ sub end_title { #-- tag (end tag forbidden) sub start_meta { - my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { my $args=''; if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } if ($args eq '') { - &Apache::lonxml::get_all_text("/meta",$parser); + &Apache::lonxml::get_all_text("/meta",$parser,$style); } else { $currentstring = $token->[4]; } @@ -399,7 +437,7 @@ sub start_meta { my $display=&Apache::lonxml::get_param ('display',$parstack,$safeeval,undef,1); if ($display) { - $display=&HTML::Entities::encode($display); + $display=&HTML::Entities::encode($display,'<>&"'); $currentstring.='<'.$name.'.display>'.$display. ''; } @@ -417,7 +455,7 @@ sub start_meta { sub end_meta { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { my $args=''; if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } if ($args ne '') { @@ -435,7 +473,7 @@ sub end_meta { # accessrule sub start_accessrule { - my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $currentstring = ''; my $eff=&Apache::lonxml::get_param ('effect',$parstack,$safeeval,undef,1); @@ -454,7 +492,7 @@ sub start_accessrule { my $args=''; if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } if ($args eq '') { - &Apache::lonxml::get_all_text("/accessrule",$parser); + &Apache::lonxml::get_all_text("/accessrule",$parser,$style); } else { $currentstring = $token->[4]; } @@ -482,71 +520,33 @@ sub end_accessrule { sub start_body { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + + if ($target eq 'web' || $target eq 'webgrade') { if ($Apache::lonhomework::parsing_a_problem) { &Apache::lonxml::warning(" tag found inside of tag this can cause problems."); return ''; } - if (!$Apache::lonxml::registered && - $ENV{'request.state'} eq 'published') { - $currentstring.=''. - &Apache::lonmenu::registerurl(undef,$target).''; - } -# Accessibility - if ($ENV{'browser.imagesuppress'} eq 'on') { - delete($token->[2]->{'background'}); - } - if ($ENV{'browser.fontenhance'} eq 'on') { - my $style=''; - foreach my $key (keys(%{$token->[2]})) { - if ($key =~ /^style$/i) { - $style.=$token->[2]->{$key}.';'; - delete($token->[2]->{$key}); - } - } - $token->[2]->{'style'}=$style.'; font-size: x-large;'; - } - if ($ENV{'browser.blackwhite'} eq 'on') { - delete($token->[2]->{'font'}); - delete($token->[2]->{'link'}); - delete($token->[2]->{'alink'}); - delete($token->[2]->{'vlink'}); - delete($token->[2]->{'bgcolor'}); - delete($token->[2]->{'background'}); - } -# Overload loads - my $onLoad=''; - foreach my $key (keys(%{$token->[2]})) { - if ($key =~ /^onload$/i) { - $onLoad.=$token->[2]->{$key}.';'; - delete($token->[2]->{$key}); - } - } - $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad; - my $onUnload=''; - foreach my $key (keys(%{$token->[2]})) { - if ($key =~ /^onunload$/i) { - $onUnload.=$token->[2]->{$key}.';'; - delete($token->[2]->{$key}); - } - } - $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents(). - ';'.$onUnload; - $currentstring .= '<'.$token->[1]; - foreach (keys %{$token->[2]}) { - $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"'; + if (&is_inside_of($tagstack, "head")) { + &end_head(@_); } - $currentstring.='>'; - if ($ENV{'request.state'} ne 'published') { + $currentstring = + &Apache::loncommon::start_page($Apache::londefdef::title, + $Apache::londefdef::head, + {'add_entries' => $token->[2], + 'no_title' => 1, + 'force_register' => 1}); + + if ($env{'request.state'} ne 'published') { + $currentstring.=&Apache::lonmenu::constspaceform(); $currentstring.=(< - - +
+ +
+
EDITBUTTON - } else { - $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1); } + $currentstring.=&Apache::lonxml::message_location(); } elsif ($target eq 'tex') { $currentstring = '\begin{document}'; } @@ -554,47 +554,62 @@ EDITBUTTON } sub end_body { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; + my $currentstring = &end_p(); # Close off unclosed

+ if ($target eq 'web' || $target eq 'webgrade') { + $currentstring .= &Apache::loncommon::end_page({'discussion' => 1}); } elsif ($target eq 'tex') { - $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}'; + $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}'; } return $currentstring; } +# \begin{center} causes a new paragprah spacing that looks odd inside +# of a table cell. Same at the end of a \center but with a slightly +# larger space .. hence center_correction and center_end_correction. +# +sub center_correction { return '\vspace*{-6 mm}'; } +sub center_end_correction { return '\vspace*{-7 mm}'; } + #--

tag (end tag required) sub start_center { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; + my ($target,$token,$tagstack) = @_; + my $currentstring = &end_p(); # Close off any prior para. + if ($target eq 'web' || $target eq 'webgrade') { + $currentstring .= $token->[4]; } elsif ($target eq 'tex') { - $currentstring = '\begin{center}'; + if (&is_inside_of($tagstack, "table")) { + $currentstring .= ¢er_correction(); + } + $currentstring .= '\begin{center}'; } return $currentstring; } sub end_center { - my ($target,$token) = @_; + my ($target,$token,$tagstack) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = '\end{center}'; + if (&is_inside_of($tagstack, "table")) { + $currentstring .= ¢er_end_correction(); + } } return $currentstring; } #-- tag (end tag required) +# NOTE: In TeX mode disables internal

sub start_b { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { - $currentstring = '\textbf{'; + &disable_para(); + $currentstring .= '\textbf{'; } return $currentstring; } @@ -602,21 +617,24 @@ sub start_b { sub end_b { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { - $currentstring = '}'; + &enable_para(); + $currentstring = '}'; } return $currentstring; } #-- tag (end tag required) +# NOTE: in TeX mode disables internal

sub start_strong { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { + &disable_para(); $currentstring = '\textbf{'; } return $currentstring; @@ -625,9 +643,10 @@ sub start_strong { sub end_strong { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { + &enable_para(); $currentstring = '}'; } return $currentstring; @@ -636,13 +655,13 @@ sub end_strong { #--

tag (end tag required) sub start_h1 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - my $currentstring = ''; - if ($target eq 'web') { + my $currentstring = &end_p(); # Close off any prior para. + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; - my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1)); + if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; @@ -651,10 +670,10 @@ sub start_h1 { } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} - $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; + $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } elsif ($target eq 'meta') { - $currentstring=''; - &start_output(); + $currentstring.=''; + &start_output($target); } return $currentstring; } @@ -662,12 +681,12 @@ sub start_h1 { sub end_h1 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { - my $post; + my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; @@ -676,7 +695,7 @@ sub end_h1 { } $currentstring .= '}}'.$post; } elsif ($target eq 'meta') { - &end_output(); + &end_output($target); $currentstring=''; } return $currentstring; @@ -685,13 +704,13 @@ sub end_h1 { #--

tag sub start_h2 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - my $currentstring = ''; - if ($target eq 'web') { + my $currentstring = &end_p(); # Close off any prior para. + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; @@ -700,7 +719,7 @@ sub start_h2 { } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} - $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; + $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } return $currentstring; } @@ -708,12 +727,12 @@ sub start_h2 { sub end_h2 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { - my $post; + my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; @@ -728,13 +747,13 @@ sub end_h2 { #--

tag sub start_h3 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - my $currentstring = ''; - if ($target eq 'web') { + my $currentstring = &end_p(); # Close off any prior para. + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; @@ -743,7 +762,7 @@ sub start_h3 { } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} - $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; + $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } return $currentstring; } @@ -751,12 +770,12 @@ sub start_h3 { sub end_h3 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { - my $post; + my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; @@ -771,13 +790,13 @@ sub end_h3 { #--

tag sub start_h4 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - my $currentstring = ''; - if ($target eq 'web') { + my $currentstring = &end_p(); # Close off any prior para. + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; @@ -786,7 +805,7 @@ sub start_h4 { } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} - $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; + $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } return $currentstring; } @@ -794,12 +813,12 @@ sub start_h4 { sub end_h4 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { - my $post; + my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; @@ -814,13 +833,13 @@ sub end_h4 { #--

tag sub start_h5 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - my $currentstring = ''; - if ($target eq 'web') { + my $currentstring = &end_p(); # Close off any prior paras. + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; @@ -829,7 +848,7 @@ sub start_h5 { } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} - $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; + $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } return $currentstring; } @@ -837,12 +856,12 @@ sub start_h5 { sub end_h5 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { - my $post; + my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; @@ -857,13 +876,13 @@ sub end_h5 { #--
tag sub start_h6 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - my $currentstring = ''; - if ($target eq 'web') { + my $currentstring = &end_p(); # Close off any prior paras. + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; @@ -872,7 +891,7 @@ sub start_h6 { } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} - $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; + $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } return $currentstring; } @@ -880,12 +899,12 @@ sub start_h6 { sub end_h6 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { - my $post; + my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); - if (($align eq 'center') || (not defined $align)) { + if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; @@ -901,7 +920,7 @@ sub end_h6 { sub start_cite { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; @@ -912,7 +931,7 @@ sub start_cite { sub end_cite { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; @@ -924,7 +943,7 @@ sub end_cite { sub start_i { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; @@ -935,7 +954,7 @@ sub start_i { sub end_i { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; @@ -947,7 +966,7 @@ sub end_i { sub start_address { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; @@ -958,7 +977,7 @@ sub start_address { sub end_address { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; @@ -970,7 +989,7 @@ sub end_address { sub start_dfn { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; @@ -981,7 +1000,7 @@ sub start_dfn { sub end_dfn { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; @@ -993,7 +1012,7 @@ sub end_dfn { sub start_tt { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\texttt{'; @@ -1004,7 +1023,7 @@ sub start_tt { sub end_tt { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; @@ -1016,7 +1035,7 @@ sub end_tt { sub start_kbd { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\texttt{'; @@ -1027,7 +1046,7 @@ sub start_kbd { sub end_kbd { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; @@ -1039,7 +1058,7 @@ sub end_kbd { sub start_code { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\texttt{'; @@ -1050,7 +1069,7 @@ sub start_code { sub end_code { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; @@ -1062,7 +1081,7 @@ sub end_code { sub start_em { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\emph{'; @@ -1073,7 +1092,7 @@ sub start_em { sub end_em { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; @@ -1085,7 +1104,7 @@ sub end_em { sub start_q { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\emph{'; @@ -1096,7 +1115,7 @@ sub start_q { sub end_q { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; @@ -1104,39 +1123,117 @@ sub end_q { return $currentstring; } +#

is a bit strange since it does not require a closing

+# However in latex, we must often output closing stuff to end +# environments and {}'s etc. Therefore we do all the work +# of figuring out the ending strings in the start tag processing, +# and provide a mechanism to output the stop text external +# to tag processing. +# +{ + + my $closing_string = ''; # String required to close

+ +# Some tags are

fragile meaning that

inside of them +# does not work within TeX mode. This is managed via the +# counter below: +# + + my $para_disabled = 0; + +sub disable_para { + $para_disabled++; +} +sub enable_para { + $para_disabled--; +} + + #--

tag (end tag optional) +#optional attribute - align="center|left|right" sub start_p { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { + $currentstring .= &end_p(); # close off prior para if in progress. $currentstring .= $token->[4]; - } elsif ($target eq 'tex') { - my $signal=1; - foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}} - if ($signal) {$currentstring .= '\par ';} + if (! ($currentstring =~ /\//)) { + $closing_string = '

'; # Deal correctly with

e.g. + } + } elsif ($target eq 'tex' && !$para_disabled) { + + $currentstring .= &end_p(); # close off prior para if in progress. + my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); + if ($align eq 'center') { + $currentstring .='\begin{center}\par '; + $closing_string = '\end{center}'; + if (&is_inside_of($tagstack, "table")) { + $currentstring = ¢er_correction().$currentstring; + } + } elsif ($align eq 'right') { + $currentstring.="\n".'{\flushright '; +# $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{'; + $closing_string= "}\n"; + } elsif ($align eq 'left') { + $currentstring.= "\n".'{\flushleft '; +# $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{'; + $closing_string = "}\n"; + } else { + $currentstring.='\par '; + if (&is_inside_of($tagstack, 'table')) { + $closing_string = '\vskip 0pt'; # Seems to be consistent with

in tables. + } else { + $closing_string = '\strut\\\\\strut '; + } + } + } return $currentstring; } - +# +# End paragraph processing just requires that we output the +# closing string that was saved and blank it. sub end_p { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring .= $token->[2]; + # Note only 'tex' mode uses disable_para and enable_para + # so we don't need to know the target in the check below: + + if (!$para_disabled) { + my $current_string = $closing_string; + $closing_string = ''; # Not in a para anymore. + return $current_string; + } else { + return ''; } - return $currentstring; -} +} +} #--
tag (end tag forbidden) sub start_br { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { - if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') { - $currentstring .= '\vskip 0.2 mm '; + my @tempo=@$tagstack; + my $signal=0; + # Not going to factor this to is_inside_of since that would require + # multiple stack traversals. + # + for (my $i=$#tempo;$i>=0;$i--) { + if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') || + ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) { + $signal=1; + } + if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) { + $signal = 1; + } + } + if ($signal eq 1) { + $currentstring .= ' \vskip 0 mm '; + } else { + $currentstring .= '\strut \\\\ \strut '; } + } return $currentstring; } @@ -1144,7 +1241,7 @@ sub start_br { sub end_br { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } return $currentstring; @@ -1154,7 +1251,7 @@ sub end_br { sub start_big { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '{\large '; @@ -1165,7 +1262,7 @@ sub start_big { sub end_big { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; @@ -1177,7 +1274,7 @@ sub end_big { sub start_small { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '{\footnotesize '; @@ -1188,7 +1285,7 @@ sub start_small { sub end_small { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; @@ -1200,7 +1297,7 @@ sub end_small { sub start_basefont { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); @@ -1214,7 +1311,7 @@ sub start_basefont { sub end_basefont { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); @@ -1229,13 +1326,11 @@ sub end_basefont { sub start_font { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval); - if ($face=~/symbol/i) { - $Apache::lonxml::prevent_entity_encode++; - } else { - if (($ENV{'browser.fontenhance'} eq 'on') || - ($ENV{'browser.blackwhite'} eq 'on')) { return ''; } + if ($face!~/symbol/i) { + if (($env{'browser.fontenhance'} eq 'on') || + ($env{'browser.blackwhite'} eq 'on')) { return ''; } } $currentstring = $token->[4]; } elsif ($target eq 'tex') { @@ -1250,9 +1345,7 @@ sub start_font { sub end_font { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $currentstring = ''; - if ($target eq 'web') { - my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval); - if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;} + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); @@ -1267,7 +1360,7 @@ sub end_font { sub start_strike { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { &Apache::lonxml::startredirection(); @@ -1278,7 +1371,7 @@ sub start_strike { sub end_strike { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring=&Apache::lonxml::endredirection(); @@ -1293,7 +1386,7 @@ sub end_strike { sub start_s { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { &Apache::lonxml::startredirection(); @@ -1304,7 +1397,7 @@ sub start_s { sub end_s { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring=&Apache::lonxml::endredirection(); @@ -1319,10 +1412,10 @@ sub end_s { sub start_sub { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { - $currentstring .= "\$_{"; + $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{'; } return $currentstring; } @@ -1330,10 +1423,10 @@ sub start_sub { sub end_sub { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { - $currentstring .= "}\$"; + $currentstring .= '}}'; } return $currentstring; } @@ -1342,10 +1435,10 @@ sub end_sub { sub start_sup { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { - $currentstring .= "\$^{"; + $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{'; } return $currentstring; } @@ -1353,10 +1446,10 @@ sub start_sup { sub end_sup { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { - $currentstring .= "}\$"; + $currentstring .= '}}'; } return $currentstring; } @@ -1364,10 +1457,31 @@ sub end_sup { #--

tag (end tag forbidden) sub start_hr { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - my $currentstring = ''; - if ($target eq 'web') { + my $currentstring = &end_p(); # End enclosing para. + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { + + #
can't be inside of thank you LaTeX. + # + my $restart_sub = 0; + my $restart_sup = 0; + + # Since and are simple tags it's ok to turn off/on + # using the start_ stop_ functions.. those tags only care about + # $target. + + if (&is_inside_of($tagstack, "sub")) { + $restart_sub = 1; + $currentstring .= &end_sub($target, $token, $tagstack, + $parstack, $parser, $safeeval); + } + if (&is_inside_of($tagstack, "sup")) { + $restart_sup = 1; + $currentstring .= &end_sup($target, $token, $tagstack, + $parstack, $parser, $safeeval); + } + my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); if (defined $LaTeXwidth) { if ($LaTeXwidth=~/^%/) { @@ -1388,6 +1502,16 @@ sub start_hr { } $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['. $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm '; + # Turn stuff back on that we can't be inside of. + + if ($restart_sub) { + $currentstring .= &start_sub($target, $token, $tagstack, + $parstack, $parser, $safeeval); + } + if ($restart_sup) { + $currentstring .= &start_sup($target, $token, $tagstack, + $parstack, $parser, $safeeval); + } } return $currentstring; } @@ -1395,48 +1519,79 @@ sub start_hr { sub end_hr { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } return $currentstring; } #--
tag (end tag required) +{ + +# Since div can be nested, the stack below is used +# in 'tex' mode to store the ending strings +# for the div stack. + + my @div_end_stack; + sub start_div { - my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { + my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_; + my $currentstring = &end_p(); # Close enclosing para. + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } + if ($target eq 'tex') { + # 4 possible alignments: left, right, center, and -missing-. + + my $endstring = ''; + + my $align = lc(&Apache::lonxml::get_param('align', $parstack, + $safeeval, undef, 1)); + if ($align eq 'center') { + $currentstring .= '\begin{center}'; + $endstring = '\end{center}'; + if (&is_inside_of($tagstack, "table")) { + $currentstring = ¢er_correction().$currentstring; + } + } + elsif ($align eq 'right') { + $currentstring .= '\begin{flushright}'; + $endstring .= '\end{flushright}'; + } elsif ($align eq 'left') { + $currentstring .= '\begin{flushleft}'; + $endstring = '\end{flushleft}'; + } else { + + } + $currentstring .= "\n"; # For human readability. + $endstring = "\n$endstring\n"; # For human readability + push(@div_end_stack, $endstring); + } return $currentstring; } sub end_div { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; - } + } + if ($target eq 'tex') { + my $endstring = pop @div_end_stack; + $currentstring .= $endstring; + } return $currentstring; } +} #-- tag (end tag required) sub start_a { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { - $currentstring .= $token->[4]; - } elsif ($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 { - $currentstring.=''; - } + if ($target eq 'web' || $target eq 'webgrade') { + my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval, + undef,1); + $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href}); } return $currentstring; } @@ -1444,9 +1599,23 @@ sub start_a { sub end_a { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } + if ($target eq 'tex') { + my $href = + &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1); + my $name = + &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1); + if ($href =~ /\S/) { + $href =~ s/([^\\])%/$1\\\%/g; + $currentstring .= ' ({\tt URI:'.&Apache::lonxml::latex_special_symbols($href).'})'; + } elsif ($name =~ /\S/) { + $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})'; + } else { + $currentstring.=''; + } + } return $currentstring; } @@ -1454,28 +1623,39 @@ sub end_a { sub start_li { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { - my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1); - if ($type=~/circle/) { - $currentstring .= ' \item[o] '; + my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0); + my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0); + #FIXME need to support types i and I + if ($type=~/disc/) { + $currentstring .= ' \item[$\bullet$] '; + } elsif ($type=~/circle/) { + $currentstring .= ' \item[$\circ$] '; } elsif ($type=~/square/) { - $currentstring .= ' \item[$\Box$] '; - } elsif ($type ne '') { - $currentstring .= ' \item['.$type.'] '; + $currentstring .= ' \item[$\diamond$] '; + } elsif ($type eq '1') { + $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]'; + } elsif ($type eq 'A') { + $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]'; + } elsif ($type eq 'a') { + $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]'; + } elsif ($value ne '') { + $currentstring .= ' \item['.$value.'] '; } else { $currentstring .= ' \item '; } - } + $Apache::londefdef::list_index++; + } return $currentstring; } sub end_li { my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; + my $currentstring = &end_p(); # In case there's a

in the

  • + if ($target eq 'web' || $target eq 'webgrade') { + $currentstring .= $token->[2]; } return $currentstring; } @@ -1484,7 +1664,7 @@ sub end_li { sub start_u { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { &Apache::lonxml::startredirection(); @@ -1495,7 +1675,7 @@ sub start_u { sub end_u { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring=&Apache::lonxml::endredirection(); @@ -1509,28 +1689,29 @@ sub end_u { #--
      tag (end tag required) sub start_ul { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; + my $currentstring = &end_p(); # Close off enclosing list. + if ($target eq 'web' || $target eq 'webgrade') { + $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0); + $Apache::londefdef::list_index=0; if ($TeXtype eq 'disc') { - $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$} - \renewcommand{\labelitemii}{$\bullet$} - \renewcommand{\labelitemiii}{$\bullet$} - \renewcommand{\labelitemiv}{$\bullet$}'; + $currentstring .= '\renewcommand{\labelitemi}{$\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$}'; + $currentstring .= '\renewcommand{\labelitemi}{$\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$}'; + $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'. + '\renewcommand{\labelitemii}{$\diamond$}'. + '\renewcommand{\labelitemiii}{$\diamond$}'. + '\renewcommand{\labelitemiv}{$\diamond$}'; } - $currentstring .= '\begin{itemize}'; + $currentstring .= '\strut \begin{itemize}'; } return $currentstring; } @@ -1538,13 +1719,13 @@ sub start_ul { sub end_ul { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { - $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$} - \renewcommand{\labelitemii}{$\bullet$} - \renewcommand{\labelitemiii}{$\bullet$} - \renewcommand{\labelitemiv}{$\bullet$}'; + $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'. + '\renewcommand{\labelitemii}{$\bullet$}'. + '\renewcommand{\labelitemiii}{$\bullet$}'. + '\renewcommand{\labelitemiv}{$\bullet$}\strut '; } return $currentstring; } @@ -1553,7 +1734,7 @@ sub end_ul { sub start_menu { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $currentstring = " \\begin{itemize} "; @@ -1564,7 +1745,7 @@ sub start_menu { sub end_menu { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = " \\end{itemize}"; @@ -1575,11 +1756,11 @@ sub end_menu { #-- tag (end tag required) sub start_dir { my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; + my $currentstring = &end_p(); # In case there's a

      prior to the list. + if ($target eq 'web' || $target eq 'webgrade') { + $currentstring .= $token->[4]; } elsif ($target eq 'tex') { - $currentstring = " \\begin{itemize} "; + $currentstring .= " \\begin{itemize} "; } return $currentstring; } @@ -1587,7 +1768,7 @@ sub start_dir { sub end_dir { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = " \\end{itemize}"; @@ -1598,38 +1779,39 @@ sub end_dir { #--

        tag (end tag required) sub start_ol { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; + my $currentstring = &end_p(); # In case there's a

        prior to the list. + if ($target eq 'web' || $target eq 'webgrade') { + $currentstring .= $token->[4]; } elsif ($target eq 'tex') { + $Apache::londefdef::list_index=0; 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}.}'; + $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'. + '\renewcommand{\labelenumii}{\arabic{enumii}.}'. + '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'. + '\renewcommand{\labelenumiv}{\arabic{enumiv}.}'; } elsif ($type eq 'A') { - $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.} - \renewcommand{\labelenumii}{\Alph{enumii}.} - \renewcommand{\labelenumiii}{\Alph{enumiii}.} - \renewcommand{\labelenumiv}{\Alph{enumiv}.}'; + $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'. + '\renewcommand{\labelenumii}{\Alph{enumii}.}'. + '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'. + '\renewcommand{\labelenumiv}{\Alph{enumiv}.}'; } elsif ($type eq 'a') { - $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.} - \renewcommand{\labelenumii}{\alph{enumii}.} - \renewcommand{\labelenumiii}{\alph{enumiii}.} - \renewcommand{\labelenumiv}{\alph{enumiv}.} '; + $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'. + '\renewcommand{\labelenumii}{\alph{enumii}.}'. + '\renewcommand{\labelenumiii}{\alph{enumiii}.}'. + '\renewcommand{\labelenumiv}{\alph{enumiv}.}'; } elsif ($type eq 'i') { - $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.} - \renewcommand{\labelenumii}{\roman{enumii}.} - \renewcommand{\labelenumiii}{\roman{enumiii}.} - \renewcommand{\labelenumiv}{\roman{enumiv}.} '; + $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'. + '\renewcommand{\labelenumii}{\roman{enumii}.}'. + '\renewcommand{\labelenumiii}{\roman{enumiii}.}'. + '\renewcommand{\labelenumiv}{\roman{enumiv}.}'; } elsif ($type eq 'I') { - $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.} - \renewcommand{\labelenumii}{\Roman{enumii}.} - \renewcommand{\labelenumiii}{\Roman{enumiii}.} - \renewcommand{\labelenumiv}{\Roman{enumiv}.} '; + $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'. + '\renewcommand{\labelenumii}{\Roman{enumii}.}'. + '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'. + '\renewcommand{\labelenumiv}{\Roman{enumiv}.}'; } - $currentstring .= '\begin{enumerate}'; + $currentstring .= '\strut \begin{enumerate}'; } return $currentstring; } @@ -1637,13 +1819,13 @@ sub start_ol { sub end_ol { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { - $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.} - \renewcommand{\labelenumii}{\arabic{enumii}.} - \renewcommand{\labelenumiii}{\arabic{enumiii}.} - \renewcommand{\labelenumiv}{\arabic{enumiv}.}'; + $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'. + '\renewcommand{\labelenumii}{\arabic{enumii}.}'. + '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'. + '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut '; } return $currentstring; } @@ -1651,14 +1833,16 @@ sub end_ol { #--

        tag (end tag required) sub start_dl { my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; - } elsif ($target eq 'tex') { - $currentstring = '\begin{description}'; - @Apache::londefdef::description=(); - $Apache::londefdef::DD_redirection=0; - $Apache::londefdef::DT_redirection=0; + my $currentstring = &end_p(); # In case there's a

        unclosed prior to the list. + if ($target eq 'web' || $target eq 'webgrade') { + $currentstring .= $token->[4]; + } elsif ($target eq 'tex') { + $currentstring .= '\begin{description}'; + $Apache::londefdef::DL++; + push(@Apache::londefdef::description,[]); + $Apache::londefdef::DD[$Apache::londefdef::DL]=0; + $Apache::londefdef::DT[$Apache::londefdef::DL]=0; + $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0; } return $currentstring; } @@ -1666,21 +1850,20 @@ sub start_dl { sub end_dl { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { - 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 $element (@Apache::londefdef::description) { + if ($Apache::londefdef::DT[-1]) { &end_dt(@_); } + if ($Apache::londefdef::DD[-1]) { &end_dd(@_); } + foreach my $element (@{$Apache::londefdef::description[-1]}) { $currentstring.=' '.$element.' '; } - @Apache::londefdef::description=(); + pop(@Apache::londefdef::description); $currentstring.='\end{description}'; + delete($Apache::londefdef::DD[$Apache::londefdef::DL]); + delete($Apache::londefdef::DT[$Apache::londefdef::DL]); + delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]); + $Apache::londefdef::DL--; } return $currentstring; } @@ -1689,19 +1872,14 @@ sub end_dl { sub start_dt { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring=''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { - if ($Apache::londefdef::DT_redirection) { - my $data=&item_cleanup; - push @Apache::londefdef::description,'\item['.$data.']'; - $Apache::londefdef::DT_redirection=0; - } elsif ($Apache::londefdef::DD_redirection) { - $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection(); - $Apache::londefdef::DD_redirection=0; - } + if ($Apache::londefdef::DT[-1]) { &end_dt(@_); } + if ($Apache::londefdef::DD[-1]) { &end_dd(@_); } &Apache::lonxml::startredirection(); - $Apache::londefdef::DT_redirection=1; + $Apache::londefdef::DT[-1]++; + $Apache::londefdef::seenDT[-1]=1; } return $currentstring; } @@ -1709,12 +1887,14 @@ sub start_dt { sub end_dt { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { - my $data=&item_cleanup; - push @Apache::londefdef::description,'\item['.$data.']'; - $Apache::londefdef::DT_redirection=0; + if ($Apache::londefdef::DT[-1]) { + my $data=&item_cleanup(); + push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm'); + $Apache::londefdef::DT[-1]--; + } } return $currentstring; } @@ -1730,15 +1910,17 @@ sub item_cleanup { sub start_dd { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { - if ($Apache::londefdef::DT_redirection) { - my $data=&item_cleanup; - push @Apache::londefdef::description,'\item['.$data.']'; - $Apache::londefdef::DT_redirection=0; + if ($Apache::londefdef::DT[-1]) { &end_dt(@_); } + if ($Apache::londefdef::DD[-1]) { &end_dd(@_);} + if (!$Apache::londefdef::seenDT[-1]) { + push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm '); } - $Apache::londefdef::DD_redirection=1; + push(@{$Apache::londefdef::description[-1]},''); + $Apache::londefdef::description[-1]->[-1].=' \strut '; + $Apache::londefdef::DD[-1]++; &Apache::lonxml::startredirection(); } return $currentstring; @@ -1747,53 +1929,80 @@ sub start_dd { sub end_dd { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { - $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection(); - $Apache::londefdef::DD_redirection=0; + $Apache::londefdef::description[-1]->[-1].= + &Apache::lonxml::endredirection().' \vskip 0mm '; + $Apache::londefdef::DD[-1]--; } return $currentstring; } #-- tag (end tag required) +#
        also ends any prior

        that is not closed. +# but, unless I allow

        's to nest, that's the +# only way I could think of to allow

        in +#

        bodies +# +#list of supported attributes: border,width,TeXwidth sub start_table { 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 $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; + my $textwidth = ''; + my $currentstring = &end_p(); + if ($target eq 'web' || $target eq 'webgrade') { + $currentstring .= $token->[4]; } elsif ($target eq 'tex') { - my $aa = {}; - push @Apache::londefdef::table, $aa; + push(@Apache::londefdef::table, {}); $Apache::londefdef::table[-1]{'row_number'} = -1; - #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; + #maximum table's width (default coincides with text line length) + if ($#Apache::londefdef::table==0) { + $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm + $textwidth=~/(\d+\.?\d*)/; + $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame + } else { + if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) { + #the maximum width of nested table is determined by LATeX width of parent cell + $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]; } else { - $Apache::londefdef::table[-1]{'width'}=$textwidth; + #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly + $textwidth=$Apache::londefdef::table[-2]{'width'}; + for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) { + $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i]; + } + } + } + + # width either comes forced from the TeXwidth or the width parameters. + # in either case it can be a percentage or absolute width. + # in the width case we ignore absolute width + my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); + if (!defined($TeXwidth)) { + my $htmlwidth = &Apache::lonxml::get_param('width',$parstack, + $safeeval,undef,1); + if ($htmlwidth =~ /%/) { + $TeXwidth = $htmlwidth; + } else { + $TeXwidth = $textwidth; } - } elsif ($TeXwidth=~/%/) { + } + # if the width is specified as a % it is converted to an absolute width. + # otherwise.. just plugged right in the hash + + if ($TeXwidth=~/%/) { $TeXwidth=~/(\d+)/; - my $value=$1*$textwidth/100; - $Apache::londefdef::table[-1]{'width'}=$value; + $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100; } else { - $Apache::londefdef::table[-1]{'width'}=$textwidth; - } + $Apache::londefdef::table[-1]{'width'}=$TeXwidth; + } + # In the end, however the table width cannot be wider than $textwidth... + + if ($Apache::londefdef::table[-1]{'width'} > $textwidth) { + $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); + my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0); unless (defined $border) { $border = 0; } if ($border) { $Apache::londefdef::table[-1]{'hinc'} = '\hline '; @@ -1804,8 +2013,22 @@ sub start_table { $Apache::londefdef::table[-1]{'vinc'} = '&'; $Apache::londefdef::table[-1]{'vvinc'} = ''; } - $Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} '; - $currentstring = '\keephidden{NEW TABLE ENTRY}'; + if ($#Apache::londefdef::table==0) { + # Note that \newline seems to destroy the alignment envs. + # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}'; + $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}'; + } + $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} '; + $Apache::londefdef::table[-1]{'TeXlen'}=[]; + $Apache::londefdef::table[-1]{'objectlen'}=[]; + $Apache::londefdef::table[-1]{'objectsignal'}=[]; + $Apache::londefdef::table[-1]{'maxlen'}=[]; + $Apache::londefdef::table[-1]{'minlen'}=[]; + $Apache::londefdef::table[-1]{'content'}=[]; + $Apache::londefdef::table[-1]{'align'}=[]; + $currentstring.=' \keephidden{NEW TABLE ENTRY}'; + + } return $currentstring; } @@ -1813,71 +2036,402 @@ sub start_table { sub end_table { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { my $inmemory = ''; my $output = ''; - #construct header of the table - my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'}; - for (my $in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) { - $header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'}; + my $WARNING=''; + #width of columns from TeXwidth attributes + + for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { + for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { + if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) { + $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]; + } + } } - $header_of_table .= '}'; - #define the length of the table cells - #always starts with TeXwidth (if defined everything else is ignored) - my @length_row_final = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[0]); - for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { - my @length_row = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[$in]); - for (my $jn=0;$jn<=$#length_row;$jn++) { - if ($length_row_final[$jn]<$length_row[$jn]) {$length_row_final[$jn]=$length_row[$jn];} - } - } - #continues trying estimate the width of raw data - my @length_raw_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]); - for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { - my @length_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[$in]); - for (my $jn=0;$jn<=$#length_row;$jn++) { - if ($length_raw_row[$jn]<$length_row[$jn]) {$length_raw_row[$jn]=$length_row[$jn];} - } - } - #comparing of TeXwidth and raw data width - my $available_length=$Apache::londefdef::table[-1]{'width'}; - my $needed=0; - for (my $jn=0;$jn<=$#length_row_final;$jn++) { - if ($length_row_final[$jn]!=0) { - $available_length=$available_length-$length_row_final[$jn]; - $needed++; - } - } - $needed=$#length_row_final-$needed+1; - for (my $jn=0;$jn<=$#length_row_final;$jn++) { - if ($length_row_final[$jn]==0) { - if ($length_raw_row[$jn]<$available_length) { - $length_row_final[$jn]=$length_raw_row[$jn]; - $available_length=$available_length-$length_raw_row[$jn]; - $needed--; + #free space and number of empty columns + my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0); + if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;} + for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { + if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) { + $empty_columns++; + } else { + $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]; + } + } + + #boundaries for contents columns + my @min_len=();#columns can not be narrower + my @max_len=();#maximum length of column + my $avg_max; + my $avg_min; + my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'}; + for (my $jn=0;$jn<=$counter_cols; $jn++) { + my ($localmin,$localmax)=(0,0); + for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { + if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) { + $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]; + } + if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) { + $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]; + } + } + push @min_len, $localmin; + push @max_len, $localmax; + $avg_max = $localmax + $avg_max; + $avg_min = $localmin + $avg_min; + } + # Does not really matter what the average max/min are if there are no cols. + # and this prevents div 0 in that case. + + if ($counter_cols != 0) { + $avg_max = $avg_max/$counter_cols; + $avg_min = $avg_min/$counter_cols; + } + + + # I don't think the below is needed.. but just in case: + + if ($avg_min > $avg_max) { + my $temp = $avg_min; + $avg_min = $avg_max; + $avg_max = $temp; + } + + + for (my $jn=0;$jn<=$counter_cols;$jn++) { + my $localmin=0,; + for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { + if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) { + $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]; } } + if ($max_len[$jn]<$localmin) { + $max_len[$jn]=$localmin; + $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1; + }#object size is bigger + if ($min_len[$jn]<$localmin) { + $min_len[$jn]=$localmin; + $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1; + }#object size is bigger + if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) { + $min_len[$jn]=0; + $max_len[$jn]=0; + } + # Spans seem to be really bothered by max/min = 0. So if we have one + # make it an average joe max/min. + + if ($max_len[$jn] == 0) { + $max_len[$jn] = $avg_max; + } + if ($min_len[$jn] == 0) { + $min_len[$jn] = $avg_min; + } + } - for (my $jn=0;$jn<=$#length_row_final;$jn++) { - if ($length_row_final[$jn]==0) { - $length_row_final[$jn]=0.9*$available_length/$needed; + #final adjustment of column width + my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array + my @adjust=(); + #step 1. adjustment by maximum value + my $space_neeeded=0; + for (my $jn=0;$jn<=$#max_len;$jn++) { + $space_neeeded=$space_neeeded+$max_len[$jn]; + } + if ($space_neeeded<=$available_space) { + + for (my $jn=0;$jn<=$#max_len;$jn++) { + if ($fwidth[$jn]==0) { + $fwidth[$jn]=$max_len[$jn]; + } } + } else { + #step 2. adjustment by minimum value (estimation) + $space_neeeded=0; + for (my $jn=0;$jn<=$#min_len;$jn++) { + $space_neeeded+=$min_len[$jn]; + } + if ($space_neeeded>$available_space) { + $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} '; + for (my $jn=0;$jn<=$#max_len;$jn++) { + if ($fwidth[$jn]==0) { + $fwidth[$jn]=$min_len[$jn]; + } + } + #check if we have objects which can be scaled + my $how_many_to_scale=0; + my @to_scale=(); + for (my $jn=0;$jn<=$#max_len;$jn++) { + if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') { + $how_many_to_scale++; + push @to_scale, $jn; + } + } + if ($how_many_to_scale>0) { + my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale; + foreach my $jn (@to_scale) { + for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { + $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/; + if ($1 ne '') { + my $current_length=&recalc($1); + $current_length=~/(\d+\.?\d*)/; + $current_length=$current_length-$space_to_adjust; + $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/; + } + $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/; + if ($1 ne '') { + my $current_length=$1; + $current_length=$current_length-$space_to_adjust; + $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/; + } + } + $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust; + } + } + } else { + #step 3. adjustment over minimal + corrections + my $enlarge_coef=$available_space/$space_neeeded; + my $acsessive=0; + for (my $jn=0;$jn<=$#min_len;$jn++) { + $adjust[$jn]=$min_len[$jn]*$enlarge_coef; + if ($adjust[$jn]>$max_len[$jn]) { + $fwidth[$jn]=$max_len[$jn]; + $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn]; + $adjust[$jn]=0; + + } + } + if ($acsessive>0) { + #we have an excess of space and can redistribute it + my $notempty_columns=0; + for (my $jn=0;$jn<=$#min_len;$jn++) { + if ($adjust[$jn]!=0) { + $notempty_columns++; + } + } + my $per_column=$acsessive/$notempty_columns; + for (my $jn=0;$jn<=$#min_len;$jn++) { + if ($adjust[$jn]!=0) { + $adjust[$jn]+=$per_column; + $fwidth[$jn]=$adjust[$jn]; + } + } + } else { + for (my $jn=0;$jn<=$#min_len;$jn++) { + $fwidth[$jn]=$adjust[$jn]; + } + } + } + } + # use all available width or specified width as if not specified, + # the specified width gets defaulted to the available width. + + my $current=0; + for (my $i=0;$i<=$#fwidth;$i++) { + $current+=$fwidth[$i]; + } + my $coef=$Apache::londefdef::table[-1]{'width'}/$current; + for (my $i=0;$i<=$#fwidth;$i++) { + $fwidth[$i]*=$coef; + } + #removing of empty columns if allowed + my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0); + if ($permission eq 'yes') { + my @cleaned_table=(); + my @cleaned_header=(); + my $colind=0; + for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { + if ($fwidth[$jn]!=0) { + #we need to copy column + for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { + $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn]; + $cleaned_header[$colind]=$fwidth[$jn]; + } + $colind++; + } + } + $Apache::londefdef::table[-1]{'content'}=\@cleaned_table; + @fwidth=@cleaned_header; + } + + + #construct header of the table + my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'}; + for (my $in=0;$in<=$#fwidth;$in++) { + $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'}; } + $header_of_table .= '}'; + #fill the table for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { - for (my $jn=0;$jn<=$#length_row_final;$jn++) { - my $substituted=$length_row_final[$jn]; - $Apache::londefdef::table[-1]{'rowdata'}[$in]=~s/TOBECHANGEDONNUMBER/$substituted mm/; - } - $output .= $Apache::londefdef::table[-1]{'rowdata'}[$in]; - chop $output; - $output .= ' \\\\ '; + my $have_rowspan = 0; + for (my $jn=0;$jn<=$#fwidth;$jn++) { + + #----------------------------------------------------------- + # I think this order of doing things will ensure that + # single rowspan, columspan and combined row/colspans will + # work correctly. LaTeX is delicate here. + # RF. + + # Start a rowspan if necessary: + + my $primary_col_width = $fwidth[$jn]; # Width of primary column. + my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn]; + my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn]; + # + # Do the appropriate magic if this has a colspan + # + + my $spanwidth = 0; + if ($colspan > 1) { + for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) { + $spanwidth += $fwidth[$spancol]; + } + $output .= '\multicolumn{'. + $colspan + ."}"; + if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') { + $output .= '{|c|}{'; + } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') { + $output .= '{|r|}{'; + } + else { + $output .= "{|p{$spanwidth mm}|}{"; + } + + } else { + $spanwidth = $primary_col_width; # If no span width will be just colwidth + } + + # Rowspan... if colspan is 1, and there's an alignment we'll need + # to kick in a multicolumn in order to get the alignment spec. + # this must precede the multirow or LaTex gets quite upset. + # Naturally if colspan > 1 we've already done that above ^ + # + my $multirow_aligned = 0; + if ($rowspan > 1) { + if ($colspan == 1) { + if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') { + $output .= '\multicolumn{1}{|c|}{'; + $multirow_aligned = 1; + } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') { + $output .= '\multicolumn{1}{|r|}{'; + $multirow_aligned = 1; + } + } + $have_rowspan++; + if ($multirow_aligned) { + $output .= '\multirow{'.$rowspan.'}[0]{*}{'; + } else { + $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{"; + } + + $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~ + s{^\s*\\par\s*}{}; + $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~ + s{\s*\\vskip\s*0pt\s*$}{}; + + # + # If we did not throw in a multicolumn to align, then add + # an extra { + # so we close correctly without having to keep additional state + # around + # + if (!$multirow_aligned) { + $output .= '{'; + } + } + if (($rowspan eq '^') || ($rowspan eq '_')) { + $have_rowspan++; + } + #-------------------------------------------------------------- + + + # For right and center alignment of single cells. + # we are going to use a multicolumn with a span of 1 to specify alignment. + # + if ($colspan == 1 && $rowspan == 1) { + if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') { + $output .= '\multicolumn{1}{|c|}{'; + } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') { + $output .= '\multicolumn{1}{|r|}{'; + } + } + + $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn]; + + if (($colspan == 1 && $rowspan == 1) && + (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') || + ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) { + $output .= '}'; + } + + # Close off any open multirow: + + if ($rowspan > 1) { + $output .= '}}'; + } + # Close off the colspan... + # + if ($colspan > 1) { + $output .= '}'; + $jn += $colspan-1; # Adjust for number of rows really left. + } + if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};} + } + # If have_rowspan > 0, and borders are on, then + # we need to do more than put an \hline at the bottom of row. + # we need to do the appropriate \cline to ensure that + # the spanned rows don't have \hlines through them. + + if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) { + $output .= ' \\\\ '; + for (my $jn=0; $jn<=$#fwidth;$jn++) { + my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn]; + if ($rowspan ne "^") { + if (($rowspan <= 1) || ($rowspan eq '_')) { + my $column = $jn+1; + $output .= '\cline{'.$column.'-'.$column.'} '; + } + } + } + + } else { + $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' '; + } } - $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm '; + # Note that \newline destroys alignment env's produced by e.g.
        + # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut '; + $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut '; if ($#Apache::londefdef::table > 0) { my $inmemory = $Apache::londefdef::table[-1]{'output'}; + # Figure out max/and min width by summing us and then + # apply that to the current column of the table we nest in + # if it's larger than the current width or the current width + # is undefined. + # + my $min_nested_width = 0; + my $max_nested_width = 0; + for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) { + $min_nested_width += $min_len[$col]; + $max_nested_width += $max_len[$col]; + + } + # Fudge in an extra 5 mm for borders etc: + + $min_nested_width += 5; + $max_nested_width += 5; + + my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'}; + my $outer_row = $Apache::londefdef::table[-2]{'row_number'}; + if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) { + $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width; + } + if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) { + $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width; + } + pop @Apache::londefdef::table; push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory; } else { @@ -1893,35 +2447,48 @@ sub end_table { sub start_tr { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $Apache::londefdef::table[-1]{'row_number'}++; - my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1); + my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($alignchar ne '') { - push @ {$Apache::londefdef::table[-1]{'rows'} }, $alignchar; + push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1); } else { push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l'; } push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'}); + # + # Need to save the number of table columns to preserve the max # columns. + # + $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'}; $Apache::londefdef::table[-1]{'counter_columns'} = -1; - $Apache::londefdef::table[-1]{'TeXlength'} = ''; - $Apache::londefdef::table[-1]{'length'} = ''; + push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, []; + push @ {$Apache::londefdef::table[-1]{'objectlen'}}, []; + push @ {$Apache::londefdef::table[-1]{'minlen'}}, []; + push @ {$Apache::londefdef::table[-1]{'maxlen'}}, []; + push @ {$Apache::londefdef::table[-1]{'content'}}, []; } return $currentstring; } sub end_tr { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; + my $currentstring = &end_p(); # Close any pending

        in the row. + if ($target eq 'web' || $target eq 'webgrade') { + $currentstring .= $token->[2]; } elsif ($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'}; + # Counter columns must be the maximum number of columns seen + # in the table so far so: + if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) { + $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'}; + } + + + } return $currentstring; } @@ -1930,7 +2497,7 @@ sub end_tr { sub start_td { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $Apache::londefdef::TD_redirection = 1; @@ -1958,63 +2525,196 @@ sub tag_check { sub start_td_tex { my ($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);; + my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1); + if ($alignchar eq '') { + $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1]; } - push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push; + push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar; $Apache::londefdef::table[-1]{'counter_columns'}++; + my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); + if (defined $TeXwidth) { + my $current_length=&recalc($TeXwidth); + $current_length=~/(\d+\.?\d*)/; + push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1; + } &Apache::lonxml::startredirection(); return ''; } sub end_td_tex { my ($parstack,$parser,$safeeval) = @_; - my $current_row = $Apache::londefdef::table[-1]{'row_number'}; - my $data=&Apache::lonxml::endredirection(); + my $current_row = $Apache::londefdef::table[-1]{'row_number'}; + my $current_column = $Apache::londefdef::table[-1]{'counter_columns'}; + my $data = &Apache::lonxml::endredirection(); + + # The rowspan array of the table indicates which cells are part of a span. + # n indicates the start of a span set of n rows. + # ^ indicates a cell that continues a span set. + # _ indicates the cell is at the bottom of a span set. + # If this and subsequent cells are part of a rowspan, we must + # push along the row until we find one that is not. + + while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column]) + && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) { + # Part of a span. + push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, ''; + $current_column++; + } + $Apache::londefdef::table[-1]{'counter_columns'} = $current_column; + + + # Get the column and row spans. + # Colspan can be done via \multicolumn if I can figure out the data structs. + + my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0); + if (!$colspan) { + $colspan = 1; + } + + my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0); + if (!$rowspan) { + $rowspan = 1; + } + + + + for (my $c = 0; $c < $colspan; $c++) { + $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan; + for (my $i = 1; $i < $rowspan; $i++) { + $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^'; + if ($i == ($rowspan-1)) { + $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_'; + } + } + } + my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); if (defined $TeXwidth) { - my $current_length=&recalc($TeXwidth); - $current_length=~/(\d+)/; - $Apache::londefdef::table[-1]{'TeXlength'} .= $1.','; - $Apache::londefdef::table[-1]{'length'} .= '0,'; + for (my $c = 0; $c < $colspan; $c++) { + push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + } } else { - if ($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.','; - $Apache::londefdef::table[-1]{'length'} .= '0,'; + if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) { + my $garbage_data=$data; + my $fwidth=0; + while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) { + my $current_length=&recalc($1); + $current_length=~/(\d+\.?\d*)/; + if ($fwidth<$1) {$fwidth=$1;} + $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//; + } + while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) { + my $current_length=$1; + if ($fwidth<$current_length) {$fwidth=$current_length;} + $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//; + } + for (my $c = 0; $c < $colspan; $c++) { + push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth; + push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + } + } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) { + my $garbage_data=$data; + my $fwidth=0; + while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) { + my $current_length=&recalc($1); + $current_length=~/(\d+\.?\d*)/; + if ($fwidth<$1) {$fwidth=$1;} + $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//; + } + while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) { + my $current_length=&recalc($1); + $current_length=~/(\d+\.?\d*)/; + if ($fwidth<$1) {$fwidth=$1;} + $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//; + } + for (my $c = 0; $c < $colspan; $c++) { + push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth; + push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + } + $data=~s/\\\\\s*$//; } else { $data=~s/^\s+(\S.*)/$1/; $data=~s/(.*\S)\s+$/$1/; $data=~s/(\s)+/$1/; - my $current_length=0; + my ($current_length,$min_length)=(0,0); if ($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); + my $lengthnewdata=2.5*&LATEX_length($elementdata); if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;} + my @words=split(/ /,$elementdata); + foreach my $word (@words) { + my $lengthword=2.5*&LATEX_length($word); + if ($min_length<$lengthword) {$min_length=$lengthword;} + } } } else { - $current_length=1.8*LATEX_length($data); + $current_length=2.5*&LATEX_length($data); + my @words=split(/ /,$data); + foreach my $word (@words) { + my $lengthword=2*&LATEX_length($word); + if ($min_length<$lengthword) {$min_length=$lengthword;} + } + } + for (my $c = 0; $c < $colspan; $c++) { + push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length; + push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length; } - $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''; + # Substitute all of the tables nested in this cell in their appropriate places. + + + my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant... + for (my $in=0; $in<=$nested_count; $in++) { + my $nested = shift @{$Apache::londefdef::table[-1]{'include'}}; + $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/; + # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/; + $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/; + + } + # Should be be killing off the 'include' elements as they're used up? + + push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data; + + + + + # the colspan array will indicate how many columns will be spanned by this + # cell..this requires that counter_columns also be adjusted accordingly + # so that the next bunch of text goes in the right cell. Note that since + # counter_columns is incremented in the start_td_tex, we adjust by colspan-1. + # + + $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1; + for (my $i = 0; $i < ($colspan -1); $i++) { + push @ {$Apache::londefdef::table[-1]{'content'}[-1] },''; + } + for (my $r = 0; $r < $rowspan; $r++) { + $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan; + # Put empty text in spanned cols. + + } + + + + return ''; } sub end_td { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $Apache::londefdef::TD_redirection =0; @@ -2027,144 +2727,248 @@ sub end_td { sub start_th { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { - 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(); + $Apache::londefdef::TD_redirection = 1; + &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval); } return $currentstring; } - -sub end_th { - my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[2]; - } elsif ($target eq 'tex') { - 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+)/; - $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.','; - $Apache::londefdef::table[-1]{'TeXlength'} .= '0,'; - } + +sub tagg_check { + my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_; + my @ar=@$parstack; + for (my $i=$#ar-1;$i>=0;$i--) { + if (lc($$tagstack[$i]) eq $good_tag) { + &start_th_tex($parstack,$parser,$safeeval); + last; + } elsif (lc($$tagstack[$i]) eq $bad_tag) { + splice @ar, $i+1; + &end_th_tex(\@ar,$parser,$safeeval); + &start_th_tex($parstack,$parser,$safeeval); + last; } - for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) { + } + return ''; +} + +sub start_th_tex { + my ($parstack,$parser,$safeeval) = @_; + my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1); + if ($alignchar eq '') { + $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1]; + } + push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar; + $Apache::londefdef::table[-1]{'counter_columns'}++; + my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); + if (defined $TeXwidth) { + my $current_length=&recalc($TeXwidth); + $current_length=~/(\d+\.?\d*)/; + push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1; + } + &Apache::lonxml::startredirection(); + return ''; +} + +sub end_th_tex { + my ($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 $TeXwidth) { + push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + } else { + if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) { + my $garbage_data=$data; + my $fwidth=0; + while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) { + my $current_length=&recalc($1); + $current_length=~/(\d+\.?\d*)/; + if ($fwidth<$1) {$fwidth=$1;} + $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//; + } + while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) { + my $current_length=$1; + if ($fwidth<$current_length) {$fwidth=$current_length;} + $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//; + } + push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth; + push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + } else { + $data=~s/^\s+(\S.*)/$1/; + $data=~s/(.*\S)\s+$/$1/; + $data=~s/(\s)+/$1/; + my ($current_length,$min_length)=(0,0); + if ($data=~/\\vskip/) { + my $newdata=$data; + $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g; + my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata); + foreach my $elementdata (@newdata) { + my $lengthnewdata=2.5*&LATEX_length($elementdata); + if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;} + my @words=split(/ /,$elementdata); + foreach my $word (@words) { + my $lengthword=2.5*&LATEX_length($word); + if ($min_length<$lengthword) {$min_length=$lengthword;} + } + } + } else { + $current_length=2.5*&LATEX_length($data); + my @words=split(/ /,$data); + foreach my $word (@words) { + my $lengthword=2*&LATEX_length($word); + if ($min_length<$lengthword) {$min_length=$lengthword;} + } + } + push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; + push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length; + push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length; + } + } + 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'}; + #make data bold + $data='\textbf{'.$data.'}'; + push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data; + return''; +} + +sub end_th { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; + my $currentstring = &end_p(); # Close any open

        in the row. + if ($target eq 'web' || $target eq 'webgrade') { + $currentstring .= $token->[2]; + } elsif ($target eq 'tex') { + $Apache::londefdef::TD_redirection =0; + &end_th_tex($parstack,$parser,$safeeval); } return $currentstring; } + #-- tag (end tag forbidden) +# +# Render the tag. +# has the following attributes (in addition to the +# standard HTML ones: +# TeXwrap - Governs how the tex target will try to wrap text around +# horizontally aligned images. +# TeXwidth - The width of the image when rendered for print (mm). +# TeXheight - The height of the image when rendered for print (mm) +# (Note there seems to also be support for this as a % of page size) +# sub start_img { - my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval, undef,1); - $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src; + if (! $src && + ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex') + ) { + my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style); + return ''; + } + &Apache::lonxml::extlink($src); my $currentstring = ''; - my $width_param = ''; - my $height_param = ''; my $scaling = .3; - if ($target eq 'web') { - if ($ENV{'browser.imagesuppress'} ne 'on') { - $currentstring.= $token->[4]; + + # Render unto browsers that which are the browser's... + + if ($target eq 'web' || $target eq 'webgrade') { + if ($env{'browser.imagesuppress'} ne 'on') { + my $enc = ('yes' eq + lc(&Apache::lonxml::get_param('encrypturl',$parstack, + $safeeval))); + $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src}, + $enc); } else { - my $alttag= &Apache::lonxml::get_param - ('alt',$parstack,$safeeval,undef,1); - unless ($alttag) { - $alttag=&Apache::lonmeta::alttag - ($Apache::lonxml::pwd[-1],$src); + my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval, + undef,1); + if (!$alttag) { + $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1], + $src); } $currentstring.='[IMAGE: '.$alttag.']'; } + + # and render unto TeX that which is LaTeX + } elsif ($target eq 'tex') { - $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src); - &image_replication($src); + # + # The alignment will require some superstructure to be put around + # the \includegraphics stuff. At present we can only partially + # simulate the alignments offered by html. + # + # + my $align = lc(&Apache::lonxml::get_param('align', + $parstack, + $safeeval, + undef,1)); + if(!$align) { + $align = "bottom"; # This is html's default so it's ours too. + } + # + &Apache::lonxml::debug("Alignemnt = $align"); + # LaTeX's image/text wrapping is really bad since it wants to + # make figures float. + # The user has the optional parameter (applicable only to l/r + # alignment to use the picins/parpic directive to get wrapped text + # this is also imperfect.. that's why we give them a choice... + # so they can't yell at us for our choice. + # + my $latex_rendering = &Apache::lonxml::get_param('TeXwrap', + $parstack, + $safeeval, + undef,0); + # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering"); + if(!$latex_rendering) { + $latex_rendering = "texwrap"; + } + # using texwrap inside a table does not work. So, if after all of this, + # texwrap is on, we turn it off if we detect we're in a table: + # + if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) { + $latex_rendering = 'parpic'; + } + + # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src"); + #if original gif/jpg/png file exist do following: - if (-e $src) { - #defines the default size of image - my $image = Image::Magick->new; - my $current_figure = $image->Read($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; - } - if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}} - my $file; - my $path; - if ($src =~ m!(.*)/([^/]*)$!) { - $file = $2; - $path = $1.'/'; - } - my $newsrc = $src; - $newsrc =~ s/\.(gif|jpg|png)$/.eps/i; - $file=~s/\.(gif|jpg|png)$/.eps/i; - #where can we find the picture? - if (-e $newsrc) { - #eps counterpart for image exist - if ($path) { - $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; - } - } else { - #there is no eps counterpart for image - check for ps one - $newsrc =~ s/\.eps$/\.ps/; - if (-e $newsrc) { - #ps counterpart for image exist - $file =~ s/\.eps$/\.ps/; - if ($path) { - $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; - } - } else { - #there aren't eps or ps - so create eps - my $temp_file; - my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat"; - $temp_file = Apache::File->new('>>'.$filename); - print $temp_file "$src\n"; - $newsrc=~s/\/home\/httpd\/html\/res//; - $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//; - $currentstring .= '\vskip 1 mm \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; - } - } + my $origsrc=$src; + my ($path,$file) = &get_eps_image($src); + # &Apache::lonnet::logthis("Image source: $src result: $path $file"); + $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src); + &Apache::lonxml::debug("path = $path file = $file src = $src"); + if (-e $src) { + &Apache::lonxml::debug("$src exists"); + my ($height_param,$width_param)= + &image_size($origsrc,0.3,$parstack,$safeeval); + my $size; + if ($width_param) { $size.='width='.$width_param.' mm,'; } + if ($height_param) { $size.='height='.$height_param.' mm]'; } + # Default size if not able to extract that (e.g. eps image). + + # &Apache::lonnet::logthis("Size = $size"); + + $size='['.$size; + $size=~s/,$/]/; + $currentstring .= '\graphicspath{{'.$path.'}}' + .'\includegraphics'.$size.'{'.$file.'} '; + my $closure; + ($currentstring, $closure) = &align_latex_image($align, + $latex_rendering, + $currentstring, + $width_param, + $height_param); + $currentstring .= $closure; + } else { + &Apache::lonxml::debug("$src does not exist"); #original image file doesn't exist so check the alt attribute my $alt = &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1); @@ -2172,20 +2976,87 @@ sub start_img { $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src); } - if ($alt) { - $currentstring .= ' '.$alt.' '; - } else { - # tag will care about replication + if ($alt) { $currentstring .= ' '.$alt.' '; } + } + + # And here's where the semi-quote breaks down: allow the user + # to edit the beast as well by rendering the problem for edit: + } 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').'
        '; + $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'
        '; + $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5); + $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'
        '; + $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5); + $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5); + $currentstring .=&Apache::edit::select_arg('Alignment:','align', + ['','bottom','middle','top','left','right'],$token,5); + $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap', + ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2); + $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl', + ['no','yes'], $token, 2); + $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); + + + $currentstring .= ''.$alt.'[2]{'src'},$token->[2]{'width'},$token->[2]{'height'}); + my $ctag=&Apache::edit::get_new_args($token,$parstack, + $safeeval,'src','alt','align', + 'TeXwidth','TeXheight', 'TeXwrap', + 'width','height','encrypturl'); + my ($nsrc,$nwidth,$nheight)= + ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'}); + my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc); + &image_replication($loc); + my ($iwidth,$iheight); + if (-e $loc) { + my $image = Image::Magick->new; + $image->Read($loc); + ($iwidth, $iheight) = ($image->Get('width'), + $image->Get('height')); + } + if ($osrc ne $nsrc || (!$nwidth && !$nheight)) { + # changed image or no size specified, + # if they didn't explicitly change the + # width or height use the ones from the image + if ($iwidth && $iheight) { + if ($owidth == $nwidth || (!$nwidth && !$nheight)) { + $token->[2]{'width'} = $iwidth;$ctag=1; + } + if ($oheight == $nheight || (!$nwidth && !$nheight)) { + $token->[2]{'height'}=$iheight;$ctag=1; + } } } + my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'}); + # if we don't have a width or height + if ($iwidth && $cwidth && !$cheight) { + $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1; + } + if ($iheight && $cheight && !$cwidth) { + $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1; + } + if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);} } + return $currentstring; } sub end_img { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = ''; @@ -2198,16 +3069,17 @@ sub start_applet { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1); - $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code; - + &Apache::lonxml::extlink($code); my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval, undef,1); - $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive; - + &Apache::lonxml::extlink($archive); my $currentstring = ''; - if ($target eq 'web') { - if ($ENV{'browser.appletsuppress'} ne 'on') { - $currentstring = $token->[4]; + if ($target eq 'web' || $target eq 'webgrade') { + if ($env{'browser.appletsuppress'} ne 'on') { + $currentstring = &Apache::lonenc::encrypt_ref($token, + {'code'=>$code, + 'archive'=>$archive} + ); } else { my $alttag= &Apache::lonxml::get_param('alt',$parstack, $safeeval,undef,1); @@ -2218,6 +3090,29 @@ sub start_applet { $currentstring='[APPLET: '.$alttag.']'; } } elsif ($target eq 'tex') { + # Turn off some stuff we can't be inside thank you LaTeX + + + my $restart_sub = 0; + my $restart_sup = 0; + + # Since and are simple tags it's ok to turn off/on + # using the start_ stop_ functions.. those tags only care about + # $target. + + if (&is_inside_of($tagstack, "sub")) { + $restart_sub = 1; + $currentstring .= &end_sub($target, $token, $tagstack, + $parstack, $parser, $safeeval); + } + if (&is_inside_of($tagstack, "sup")) { + $restart_sup = 1; + $currentstring .= &end_sup($target, $token, $tagstack, + $parstack, $parser, $safeeval); + } + + # Now process the applet; just replace it with its alt attribute. + my $alttag= &Apache::lonxml::get_param('alt',$parstack, $safeeval,undef,1); unless ($alttag) { @@ -2228,6 +3123,17 @@ sub start_applet { } $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag. '.}\end{center}'; + + # Turn stuff back on that we can't be inside of. + + if ($restart_sub) { + $currentstring .= &start_sub($target, $token, $tagstack, + $parstack, $parser, $safeeval); + } + if ($restart_sup) { + $currentstring .= &start_sup($target, $token, $tagstack, + $parstack, $parser, $safeeval); + } } return $currentstring; } @@ -2235,7 +3141,7 @@ sub start_applet { sub end_applet { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { } @@ -2246,11 +3152,11 @@ sub end_applet { sub start_embed { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); - $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src; + &Apache::lonxml::extlink($src); my $currentstring = ''; - if ($target eq 'web') { - if ($ENV{'browser.embedsuppress'} ne 'on') { - $currentstring = $token->[4]; + if ($target eq 'web' || $target eq 'webgrade') { + if ($env{'browser.embedsuppress'} ne 'on') { + $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src}); } else { my $alttag=&Apache::lonxml::get_param ('alt',$parstack,$safeeval,undef,1); @@ -2267,7 +3173,7 @@ sub start_embed { sub end_embed { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { } @@ -2277,16 +3183,27 @@ sub end_embed { #-- tag (end tag forbidden) sub start_param { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; - if (&Apache::lonxml::get_param - ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) { - $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]= - &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1); - } - $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]= - &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); + if (&Apache::lonxml::get_param('name',$parstack, + $safeeval,undef,1)=~/^cabbase$/i) { + my $value=&Apache::lonxml::get_param('value',$parstack, + $safeeval,undef,1); + &Apache::lonxml::extlink($value); + } + + my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); + &Apache::lonxml::extlink($src); my $currentstring = ''; - if ($target eq 'web') { - $currentstring = $token->[4]; + if ($target eq 'web' || $target eq 'webgrade') { + my %toconvert; + my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); + if ($src) { $toconvert{'src'}= $src; } + my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval, + undef,1); + if ($name=~/^cabbase$/i) { + $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack, + $safeeval,undef,1); + } + $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert); } elsif ($target eq 'tex') { } return $currentstring; @@ -2295,7 +3212,7 @@ sub start_param { sub end_param { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { } @@ -2306,10 +3223,9 @@ sub end_param { sub start_allow { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); - $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src); - $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]= - &Apache::lonnet::clutter($src); - &image_replication($src); + &Apache::lonxml::extlink($src); + + if ($target eq 'tex') { &image_replication($src); } my $result; if ($target eq 'edit') { $result .=&Apache::edit::tag_start($target,$token); @@ -2333,36 +3249,16 @@ sub end_allow { #-- sub start_frameset { my ($target,$token) = @_; - my $currentstring = ''; - if ($target eq 'web') { - if (!$Apache::lonxml::registered && - $ENV{'request.state'} eq 'published') { - $currentstring.=''. - &Apache::lonmenu::registerurl(undef,$target).''; - } - 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.='>'; + my $currentstring = ''; # Close any pending para. + if ($target eq 'web' || $target eq 'webgrade') { + $currentstring = + &Apache::loncommon::start_page($Apache::londefdef::title, + $Apache::londefdef::head, + {'add_entries' => $token->[2], + 'no_title' => 1, + 'force_register' => 1, + 'frameset' => 1,}); + } return $currentstring; } @@ -2370,7 +3266,7 @@ sub start_frameset { sub end_frameset { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; @@ -2380,7 +3276,7 @@ sub end_frameset { sub start_xmp { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\begin{verbatim}'; @@ -2391,7 +3287,7 @@ sub start_xmp { sub end_xmp { my ($target,$token) = @_; my $currentstring = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '\end{verbatim}'; @@ -2402,11 +3298,12 @@ sub end_xmp { #-- 

         (end tag required)
 sub start_pre {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
-    my $currentstring = '';
-    if ($target eq 'web') {
+    my $currentstring = &end_p();	# close off pending 
        
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\begin{verbatim}';
+	&Apache::lonxml::disable_LaTeX_substitutions();
     } 
     return $currentstring;
 }
@@ -2414,10 +3311,11 @@ sub start_pre {
 sub end_pre {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\end{verbatim}';
+	&Apache::lonxml::enable_LaTeX_substitutions();
     }
     return $currentstring;
 }
@@ -2426,7 +3324,7 @@ sub end_pre {
 sub start_insert {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
 	$currentstring .= ''.$display.'';;
     }
@@ -2436,7 +3334,7 @@ sub start_insert {
 sub end_insert {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= '';
     }
     return $currentstring;
@@ -2446,7 +3344,7 @@ sub end_insert {
 sub start_externallink {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
 	$currentstring .= ''.$display.'';;
     }
@@ -2456,7 +3354,7 @@ sub start_externallink {
 sub end_externallink {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring .= '';
     }
     return $currentstring;
@@ -2465,7 +3363,7 @@ sub end_externallink {
 #-- 
 sub start_blankspace {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
-    my $currentstring = '';
+    my $currentstring = &end_p();	# closes off any unclosed 
        
     if ($target eq 'tex') {
 	my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
 	$currentstring .= '\vskip '.$howmuch.' ';
@@ -2486,7 +3384,7 @@ sub end_blankspace {
 sub start_abbr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2495,7 +3393,7 @@ sub start_abbr {
 sub end_abbr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2505,7 +3403,7 @@ sub end_abbr {
 sub start_acronym {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2514,7 +3412,7 @@ sub start_acronym {
 sub end_acronym {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2524,7 +3422,7 @@ sub end_acronym {
 sub start_area {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2533,7 +3431,7 @@ sub start_area {
 sub end_area {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2543,7 +3441,7 @@ sub end_area {
 sub start_base {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     }
     return $currentstring;
@@ -2552,7 +3450,7 @@ sub start_base {
 sub end_base {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2562,7 +3460,7 @@ sub end_base {
 sub start_bdo {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2571,7 +3469,7 @@ sub start_bdo {
 sub end_bdo {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2581,7 +3479,7 @@ sub end_bdo {
 sub start_bgsound {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2590,7 +3488,7 @@ sub start_bgsound {
 sub end_bgsound {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2600,7 +3498,7 @@ sub end_bgsound {
 sub start_blink {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2609,7 +3507,7 @@ sub start_blink {
 sub end_blink {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2618,19 +3516,25 @@ sub end_blink {
 #-- 
         tag (end tag required)
 sub start_blockquote {
     my ($target,$token) = @_;
-    my $currentstring = '';
-    if ($target eq 'web') {
-	$currentstring = $token->[4];     
+    my $currentstring = &end_p();	# Close any unclosed 
        
+    if ($target eq 'web' || $target eq 'webgrade') {
+	$currentstring .= $token->[4];     
     } 
+    if ($target eq 'tex') {
+	$currentstring .= '\begin{quote}';
+    }
     return $currentstring;
 }
 
 sub end_blockquote {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
+    if ($target eq 'tex') {
+	$currentstring = '\end{quote}';
+    }
     return $currentstring;
 }
 
@@ -2638,7 +3542,7 @@ sub end_blockquote {
 sub start_button {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2647,7 +3551,7 @@ sub start_button {
 sub end_button {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2657,7 +3561,7 @@ sub end_button {
 sub start_caption {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2666,7 +3570,7 @@ sub start_caption {
 sub end_caption {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2676,7 +3580,7 @@ sub end_caption {
 sub start_col {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2685,7 +3589,7 @@ sub start_col {
 sub end_col {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2695,7 +3599,7 @@ sub end_col {
 sub start_colgroup {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2704,7 +3608,7 @@ sub start_colgroup {
 sub end_colgroup {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2714,7 +3618,7 @@ sub end_colgroup {
 sub start_del {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2723,7 +3627,7 @@ sub start_del {
 sub end_del {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2733,7 +3637,7 @@ sub end_del {
 sub start_fieldset {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2742,7 +3646,7 @@ sub start_fieldset {
 sub end_fieldset {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2752,7 +3656,7 @@ sub end_fieldset {
 sub start_frame {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2761,7 +3665,7 @@ sub start_frame {
 sub end_frame {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2771,7 +3675,7 @@ sub end_frame {
 sub start_iframe {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2780,7 +3684,7 @@ sub start_iframe {
 sub end_iframe {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2790,7 +3694,7 @@ sub end_iframe {
 sub start_ins {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2799,7 +3703,7 @@ sub start_ins {
 sub end_ins {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2809,7 +3713,7 @@ sub end_ins {
 sub start_isindex {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2818,7 +3722,7 @@ sub start_isindex {
 sub end_isindex {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2828,7 +3732,7 @@ sub end_isindex {
 sub start_keygen {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2837,7 +3741,7 @@ sub start_keygen {
 sub end_keygen {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2847,7 +3751,7 @@ sub end_keygen {
 sub start_label {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2856,7 +3760,7 @@ sub start_label {
 sub end_label {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2866,7 +3770,7 @@ sub end_label {
 sub start_layer {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2875,7 +3779,7 @@ sub start_layer {
 sub end_layer {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2885,7 +3789,7 @@ sub end_layer {
 sub start_legend {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2894,7 +3798,7 @@ sub start_legend {
 sub end_legend {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2902,9 +3806,12 @@ sub end_legend {
 
 #--  tag (end tag forbidden)
 sub start_link {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
+	my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
+					    undef,1);
+	&Apache::lonxml::extlink($href);
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2913,7 +3820,7 @@ sub start_link {
 sub end_link {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2923,7 +3830,7 @@ sub end_link {
 sub start_marquee {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2932,7 +3839,7 @@ sub start_marquee {
 sub end_marquee {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2941,9 +3848,9 @@ sub end_marquee {
 #--  tag (end tag required)
 sub start_multicol {
     my ($target,$token) = @_;
-    my $currentstring = '';
-    if ($target eq 'web') {
-	$currentstring = $token->[4];     
+    my $currentstring = &end_p();	# Close any pending 
        
+    if ($target eq 'web' || $target eq 'webgrade') {
+	$currentstring .= $token->[4];     
     } 
     return $currentstring;
 }
@@ -2951,7 +3858,7 @@ sub start_multicol {
 sub end_multicol {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -2961,7 +3868,7 @@ sub end_multicol {
 sub start_nobr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     }  elsif ($target eq 'tex') {
 	$currentstring='\mbox{';
@@ -2972,7 +3879,7 @@ sub start_nobr {
 sub end_nobr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     }   elsif ($target eq 'tex') {
 	$currentstring='}';
@@ -2984,7 +3891,7 @@ sub end_nobr {
 sub start_noembed {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -2993,7 +3900,7 @@ sub start_noembed {
 sub end_noembed {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3003,7 +3910,7 @@ sub end_noembed {
 sub start_noframes {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3012,7 +3919,7 @@ sub start_noframes {
 sub end_noframes {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3022,7 +3929,7 @@ sub end_noframes {
 sub start_nolayer {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3031,7 +3938,7 @@ sub start_nolayer {
 sub end_nolayer {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3041,7 +3948,7 @@ sub end_nolayer {
 sub start_noscript {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3050,7 +3957,7 @@ sub start_noscript {
 sub end_noscript {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3060,7 +3967,7 @@ sub end_noscript {
 sub start_object {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3069,7 +3976,7 @@ sub start_object {
 sub end_object {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3079,7 +3986,7 @@ sub end_object {
 sub start_optgroup {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3088,7 +3995,7 @@ sub start_optgroup {
 sub end_optgroup {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3098,7 +4005,7 @@ sub end_optgroup {
 sub start_samp {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$currentstring='\texttt{';
@@ -3109,7 +4016,7 @@ sub start_samp {
 sub end_samp {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } elsif ($target eq 'tex') {
 	$currentstring='}';
@@ -3121,7 +4028,7 @@ sub end_samp {
 sub start_server {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3130,7 +4037,7 @@ sub start_server {
 sub end_server {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3139,9 +4046,9 @@ sub end_server {
 #--  tag (end tag forbidden)
 sub start_spacer {
     my ($target,$token) = @_;
-    my $currentstring = '';
-    if ($target eq 'web') {
-	$currentstring = $token->[4];     
+    my $currentstring = &end_p();	# Close off any open 
         tag.
+    if ($target eq 'web' || $target eq 'webgrade') {
+	$currentstring .= $token->[4];     
     } 
     return $currentstring;
 }
@@ -3149,7 +4056,7 @@ sub start_spacer {
 sub end_spacer {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3159,7 +4066,7 @@ sub end_spacer {
 sub start_span {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3168,7 +4075,7 @@ sub start_span {
 sub end_span {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3178,7 +4085,7 @@ sub end_span {
 sub start_tbody {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3187,7 +4094,7 @@ sub start_tbody {
 sub end_tbody {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3197,7 +4104,7 @@ sub end_tbody {
 sub start_tfoot {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3206,7 +4113,7 @@ sub start_tfoot {
 sub end_tfoot {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3216,7 +4123,7 @@ sub end_tfoot {
 sub start_thead {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3225,7 +4132,7 @@ sub start_thead {
 sub end_thead {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3235,7 +4142,7 @@ sub end_thead {
 sub start_var {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$currentstring = '\textit{'; 
@@ -3246,7 +4153,7 @@ sub start_var {
 sub end_var {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring = '}'; 
@@ -3258,7 +4165,7 @@ sub end_var {
 sub start_wbr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
     } 
     return $currentstring;
@@ -3267,7 +4174,7 @@ sub start_wbr {
 sub end_wbr {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[2];    
     } 
     return $currentstring;
@@ -3276,7 +4183,7 @@ sub end_wbr {
 #--  tag
 sub start_hideweboutput {
     my ($target,$token) = @_;
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	&Apache::lonxml::startredirection();     
     } 
     return '';
@@ -3285,7 +4192,7 @@ sub start_hideweboutput {
 sub end_hideweboutput {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = &Apache::lonxml::endredirection();    
     } 
     return '';
@@ -3294,22 +4201,232 @@ sub end_hideweboutput {
 
 sub image_replication {
     my $src = shift;
-    if (not -e $src) {
-	#replicates image itself
-	&Apache::lonnet::repcopy($src);
-	#replicates eps or ps 
-	my $newsrc = $src;
-	$newsrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
-	if (not -e $newsrc) {
-	    if (&Apache::lonnet::repcopy($newsrc) ne 'OK') {
-		$newsrc =~ s/\.eps$/\.ps/;
-		&Apache::lonnet::repcopy($newsrc);
+    if (not -e $src) { &Apache::lonnet::repcopy($src); }
+    #replicates eps or ps 
+    my $epssrc = my $pssrc = $src;
+    $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
+    $pssrc  =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
+    if (not -e $epssrc && not -e $pssrc) {
+	my $result=&Apache::lonnet::repcopy($epssrc);
+	if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
+    }
+    return '';
+}
+#
+#   Get correct sizing parameter for an image given
+#   it's initial ht. and wid.  This allows sizing of
+#   images that are generated on-the-fly (e.g. gnuplot)
+#   as well as serving as a utility for image_size.
+# 
+#  Parameter:
+#        height_param
+#        width_param    - Initial picture dimensions.
+#        scaling        - A scale factor.
+#        parstack,      - the current stack of tag attributes 
+#                         from the xml parser
+#        safeeval,      - pointer to the safespace
+#        depth,         - from what level in the stack to look for attributes
+#                         (assumes -1 if unspecified)
+#        cis            - look for attrubutes case insensitively
+#                         (assumes false)
+#
+# Returns:
+#   height, width   - new dimensions.
+#
+sub resize_image {
+    my ($height_param, $width_param, $scaling,
+	$parstack, $safeeval, $depth, $cis) = @_;
+
+    # First apply the scaling...
+
+    $height_param = $height_param * $scaling;
+    $width_param  = $width_param  * $scaling;
+
+    #do we have any specified LaTeX size of the picture?
+    my $toget='TeXwidth'; 
+    if ($cis) { 
+	$toget=lc($toget); 
+    }
+    my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
+					      $safeeval,$depth,$cis);
+    $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
+    my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
+					       $safeeval,$depth,$cis);
+    #do we have any specified web size of the picture?
+    my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
+					   $depth,1);
+    if ($TeXwidth) { 
+	my $old_width_param=$width_param;
+	if ($TeXwidth=~/(\d+)\s*\%/) {
+	    $width_param = $1*$env{'form.textwidth'}/100;
+	} else { 
+	    $width_param = $TeXwidth;
+	}
+	if ($TeXheight) {
+	    $height_param = $TeXheight;
+	} elsif ($old_width_param) {
+	    $height_param=$TeXwidth/$old_width_param*$height_param;
+	}
+    } elsif ($TeXheight) {
+	$height_param = $TeXheight;
+	if ($height_param) {
+	    $width_param  = $TeXheight/$height_param*$width_param;
+	}
+    } elsif ($width) {
+	my $old_width_param=$width_param;
+	$width_param = $width*$scaling;
+	if ($old_width_param) {
+	    $height_param=$width_param/$old_width_param*$height_param;
+	}
+    }
+    if ($width_param > $env{'form.textwidth'}) {
+        my $old_width_param=$width_param;
+	$width_param =0.95*$env{'form.textwidth'};
+	if ($old_width_param) {
+	    $height_param=$width_param/$old_width_param*$height_param;
+	}
+    }
+
+    return ($height_param, $width_param);
+}
+
+sub image_size {
+    my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
+
+    #size of image from gif/jpg/jpeg/png 
+    my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
+    if (-e $ressrc) {
+	$src = $ressrc;
+    }
+    my $image = Image::Magick->new;
+    my $current_figure = $image->Read($src);
+    my $width_param = $image->Get('width');
+    my $height_param = $image->Get('height');
+    &Apache::lonxml::debug("Image magick says: $src :  Height = $height_param width = $width_param");
+    undef($image);
+
+    ($height_param, $width_param) = &resize_image($height_param, $width_param,
+						  $scaling, $parstack, $safeeval, 
+						  $depth, $cis);
+
+    return ($height_param, $width_param);
+}
+
+sub image_width {
+    my ($height, $width) = &image_size(@_);
+    return $width;
+}
+#  Not yet 100% sure this is correct in all circumstances..
+#  due to my uncertainty about mods to image_size.
+#
+sub image_height {
+    my ($height, $width) = &image_size(@_);
+    return $height;
+}
+
+sub get_eps_image {
+    my ($src)=@_;
+    my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
+
+    # In order to prevent the substitution of the alt text, we need to
+    # be sure the orig_src file is on system now so:
+
+    if (! -e $orig_src) {
+	&Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
+    }
+    &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
+    my ($spath, $sname, $sext) = &fileparse($src, qr/\.(gif|png|jpg|jpeg)/i);
+    $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
+    $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
+    &Apache::lonxml::debug("Filelocation gives: $src");
+    if (! -e $src) {
+	&Apache::lonxml::debug("$src does not exist");
+	if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
+	    &Apache::lonxml::debug("Repcopy of $src failed (1)");
+	    #if replication failed try to find ps file
+	    $src=~s/\.eps$/\.ps/;
+	    &Apache::lonxml::debug("Now looking for $src");
+	    #if no ps file try to replicate it.
+	    my $didrepcopy = &Apache::lonnet::repcopy($src);
+	    &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
+	    if ( (not -e $src) ||
+		($didrepcopy ne 'ok')) {
+		&Apache::lonxml::debug("Failed to find or replicate $src");
+
+		#if replication failed try to produce eps file dynamically
+		$src=~s/\.ps$/\.eps/;
+		my $temp_file;
+		open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
+		my $newsrc=$orig_src;
+		$newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
+		&Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
+		print FILE ("$newsrc\n");
+		close(FILE);
+		$src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
+		$src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
+		if ($sext ne "") {	 # Put the ext. back in to uniquify.
+		    $src =~ s/\.eps$/$sext.eps/;
+		}
+
 	    }
+
 	}
+    } else {
+	# If the postscript file has spaces in its name,
+	# LaTeX will gratuitiously vomit.  Therefore
+	# queue such files for copy with " " replaced by "_".
+	# printout.pm will know them by their .ps  or .eps extensions.
+	my $newsrc = $orig_src;
+	$newsrc    =~  s|(.*)/res/|/home/httpd/html/res/|;
+	open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
+	print FILE "$src\n";
+	close FILE;
+	$src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
+	$src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
+    }
+    my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
+    $path =~ s/ /\_/g;
+    $file =~ s/ /\_/g;
+    &Apache::lonxml::debug("get_eps_image returning: $path / $file
        ");
+    return ($path.'/',$file);
+}
+
+sub eps_generation {
+    my ($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}{};
+    $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
+    $newsrc=~s{/\./}{/};
+    $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
+    if ($newsrc=~m{/home/httpd/lonUsers/}) {
+	$newsrc=~s{/home/httpd/lonUsers}{};
+	$newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
+    }
+    if ($newsrc=~m{/userfiles/}) {
+	return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
+    } else {
+	return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
     }
-    return '';
 }
 
+sub file_path {     
+    my $src=shift;
+    my ($file,$path); 
+    if ($src =~ m!(.*)/([^/]*)$!) {
+	$file = $2; 
+	$path = $1.'/'; 
+    } 
+    return $file,$path;
+}
+#  Converts a measurement in to mm from any of 
+#  the other valid LaTeX units of measure.
+#  If the units of measure are missing from the 
+#  parameter, it is assumed to be in and returned
+#  with mm units of measure
 sub recalc {
     my $argument = shift;
     if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
@@ -3330,23 +4447,122 @@ sub recalc {
 
 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;
+    $garbage=~s/^\s+$//;
+    $garbage=~s/^\s+(\S.*)/$1/;#space before 
+    $garbage=~s/(.*\S)\s+$/$1/;#space after 
+    $garbage=~s/(\s)+/$1/;#only one space
+    $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
+    $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
+    $garbage=~s/([^\\])\$/$1/g;#$
+    $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
+   $garbage=~s/(\\alpha|\\beta|\\gamma|\\delta|\\epsilon|\\verepsilon|\\zeta|\\eta|\\theta|\\vartheta|\\iota|\\kappa|\\lambda|\\mu|\\nu|\\xi|\\pi|\\varpi|\\rho|\\varrho|\\sigma|\\varsigma|\\tau|\\upsilon|\\phi|\\varphi|\\chi|\\psi|\\omega|\\Gamma|\\Delta|\\Theta|\\Lambda|\\Xi|\\Pi|\\Sigma|\\Upsilon|\\Phi|\\Psi|\\Omega)/1/g;
     $garbage=~s/(\\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; 
+    $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/11/g;
+    $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/11/g;
+    $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
+    #remove some other LaTeX command
+    $garbage=~s|\\(\w+)\\|\\|g;	 
+    $garbage=~s|\\(\w+)(\s*)|$2|g;	 	 
+    $garbage=~s|\+|11|g;
     my  $value=length($garbage);
     return $value;
 }
 
-
+#   Wrap image 'stuff' inside of the LaTeX required to implement 
+#   alignment:
+#     align_tex_image(align, latex_rendering, image)
+#   Where:
+#     align   - The HTML alignment specification.
+#     latex_rendering - rendering hint for latex.
+#     image   - The LaTeX needed to insert the image itsef.
+#     width,height - dimensions of the image.
+# Returns:
+#    The 1/2 wrapped image and the stuff required to close the
+#    wrappage.  This allows e.g. randomlabel to insert more stuff
+#    into the closure.
+#
+sub align_latex_image {
+    my ($align, $latex_rendering, $image, $width, $height) = @_;
+    my $currentstring;        # The 1/2 wrapped image.
+    my $closure;              # The closure of the wrappage.
+    #    If there's an alignment specification we need to honor it here.
+    #    For the horizontal alignments, we will also honor the
+    #    value of the latex specfication.  The default is parbox,
+    #    and that's used for illegal values too.  
+    #    
+    #    Even though we set a default alignment value, the user
+    #    could have given us an illegal value.  In that case we
+    #    just use the default alignment of bottom..
+    $currentstring = "\n% figurewrapping \n";
+    if      ($align eq "top")    {
+	$currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
+	$closure = '}';
+    } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
+	my $offset = $height/2;
+	$currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
+	$closure       = '}';
+    } elsif ($align eq "left")   { 
+	if ($latex_rendering eq "parpic") { 
+	    $currentstring .= '\parpic[l]{'.$image;
+	    $closure       = '}';
+	} elsif ($latex_rendering eq "parbox") {
+	    $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
+		.$image;
+	    $closure = '\end{minipage}';
+	} elsif ($latex_rendering eq "wrapfigure"
+		 || $latex_rendering ne 'none') {  # wrapfig render
+	    $currentstring .= 
+		'\begin{wrapfigure}{l}{'.$width.'mm}'
+		.'\scalebox{1.0}{'.$image;
+	    $closure = '}\end{wrapfigure}';
+	}
+    } elsif ($align eq "right")  {   
+	if ($latex_rendering eq "parpic") {
+	    $currentstring .= '\parpic[r]{'.$image;
+	    $closure = '}';
+	} elsif ($latex_rendering eq "parbox") {
+	    $currentstring .=  '\begin{minipage}[r]{'.$width.'mm}'
+		.$image;
+	    $closure = '\end{minipage}';
+	} elsif ($latex_rendering eq "wrapfigure"
+		 || $latex_rendering ne 'none') {  # wrapfig render
+	    $currentstring .= 
+		'\begin{wrapfigure}{r}{'.$width.'mm}'
+		.'\scalebox{1.0}{'.$image;
+	    $closure = '}\end{wrapfigure}';
+	}
+    } else {		# Bottom is also default.
+	# $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
+	$currentstring .= "{$image";
+	$closure       = '}';
+    }
+    $currentstring .= "\n% end wrappage\n";
+    $closure        = "\n% Begin closure\n".$closure."\n% End closure\n";
+    return ($currentstring, $closure);
+}
+
+# is_inside_of $tagstack $tag
+#    This sub returns true if the current state of Xml processing
+#    is inside of the tag.   
+# Parameters:
+#     tagstack   - The tagstack from the parser.
+#     tag        - The tag (without the <>'s.).
+# Sample usage:
+#     if (is_inside_of($tagstack "table")) {
+#          # I'm in a table....
+#      }
+sub is_inside_of {
+    my ($tagstack, $tag) = @_;
+    my @stack = @$tagstack;
+    for (my $i = ($#stack - 1); $i >= 0; $i--) {
+	if ($stack[$i] eq $tag) {
+	    return 1;
+	}
+    }
+    return 0;
+}
 
 
 1;