loncom/xml/londefdef.pm - view

File: [LON-CAPA] / loncom / xml / londefdef.pm
Revision 1.301: download - view: text, annotated - select for diffs
Tue Dec 6 22:37:00 2005 UTC (18 years, 5 months ago) by foxr
Branches: MAIN
CVS tags: HEAD

Tables that were nested in cells of tables were not being 'consumed' when included
into the outer table and hence the wrong table was getting substituted into the
output if multiple tables were nested in a single table.

# The LearningOnline Network with CAPA # Tags Default Definition Module # # $Id: londefdef.pm,v 1.301 2005/12/06 22:37:00 foxr Exp $ # # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ ## Copyright for TtHfunc and TtMfunc by Ian Hutchinson. # TtHfunc and TtMfunc (the "Code") may be compiled and linked into # binary executable programs or libraries distributed by the # Michigan State University (the "Licensee"), but any binaries so # distributed are hereby licensed only for use in the context # of a program or computational system for which the Licensee is the # primary author or distributor, and which performs substantial # additional tasks beyond the translation of (La)TeX into HTML. # The C source of the Code may not be distributed by the Licensee # to any other parties under any circumstances. # package Apache::londefdef; use Apache::lonnet; use strict; use Apache::lonxml; use Apache::File(); use Image::Magick; use Apache::lonmenu(); use Apache::lonmeta(); use Apache::Constants qw(:common); use File::Basename; use Data::Dumper; BEGIN { &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput')); } # # 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); $Apache::londefdef::list_index=0; } #======================= TAG SUBROUTINES ===================== #-- <output> sub start_output { my ($target) = @_; if ($target eq 'meta') { $Apache::lonxml::metamode--; } return ''; } sub end_output { my ($target) = @_; if ($target eq 'meta') { $Apache::lonxml::metamode++; } return ''; } #-- <m> tag sub start_m { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $currentstring = ''; 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,$$parstack[-1]); #&Apache::lonxml::debug("M is evaulated to:$inside:"); } my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval); $currentstring = &Apache::lontexconvert::converted(\$inside,$display); if ($Apache::lontexconvert::errorstring) { &Apache::lonxml::warning("tth error: ". $Apache::lontexconvert::errorstring); $Apache::lontexconvert::errorstring=''; } #&Apache::lonxml::debug("M is ends with:$currentstring:"); $Apache::lonxml::post_evaluate=0; } elsif ($target eq 'tex') { $currentstring = $inside; my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval); if ($eval eq 'on') { $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]); } if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';} # detect simple math mode entry exits, and convert them # to use \ensuremath if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) { $currentstring=~s/^(\s*)\$/$1/; $currentstring=~s/\$(\s*)$/$1/; $currentstring='\ensuremath{'.$currentstring.'}'; } $Apache::lonxml::post_evaluate=0; } return $currentstring; } sub end_m { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'tex') { $currentstring = ""; } return $currentstring; } sub start_tthoption { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $result; if ($target eq 'web') { my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser, $style); $inside=~s/^\s*//; if ($env{'browser.mathml'}) { &tth::ttmoptions($inside); } else { &tth::tthoptions($inside); } } return $result; } sub end_tthoption { my ($target,$token) = @_; my $result; return $result; } #-- <html> tag (end tag optional) sub start_html { my ($target,$token) = @_; my $currentstring = ''; my $options=$env{'course.'.$env{'request.course.id'}.'.tthoptions'}; &Apache::lontexconvert::init_tth(); if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) { $currentstring = &Apache::lonxml::xmlbegin(); } elsif ($target eq 'tex') { $currentstring .= '\documentclass[letterpaper]{article}'; if (($env{'form.latex_type'}=~'batchmode') || (!$env{'request.role.adv'})) {$currentstring .='\batchmode';} $currentstring .= '\newcommand{\keephidden}[1]{}'. '\renewcommand{\deg}{$^{\circ}$}'. '\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,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = '</html>'; } return $currentstring; } #-- <head> tag (end tag optional) sub start_head { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4].&Apache::lonxml::fontsettings(); } return $currentstring; } sub end_head { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' && $env{'request.state'} eq 'published') { $currentstring = &Apache::lonmenu::registerurl(undef,$target). $token->[2]; } return $currentstring; } #-- <map> tag (end tag required) sub start_map { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_map { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <select> tag (end tag required) sub start_select { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $Apache::londefdef::select=0; } return $currentstring; } sub end_select { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <option> tag (end tag optional) sub start_option { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $Apache::londefdef::select++; if ($Apache::londefdef::select == 1) { $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{'; } else { $currentstring='\keephidden{'; } } return $currentstring; } sub end_option { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring='}'; } return $currentstring; } #-- <input> tag (end tag forbidden) sub start_input { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_input { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <textarea> tag (end tag required) sub start_textarea { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_textarea { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <form> tag (end tag required) sub start_form { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_form { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <title> tag (end tag required) sub start_title { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\keephidden{Title of the document: ' } if ($target eq 'meta') { $currentstring='<title>'; &start_output($target); } return $currentstring; } sub end_title { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } if ($target eq 'meta') { &end_output($target); $currentstring='</title>'; } return $currentstring; } #-- <meta> tag (end tag forbidden) sub start_meta { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $currentstring = ''; if ($target eq 'web') { my $args=''; if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } if ($args eq '') { &Apache::lonxml::get_all_text("/meta",$parser,$style); } else { $currentstring = $token->[4]; } } elsif ($target eq 'meta') { unless (&Apache::lonxml::get_param ('http-equiv',$parstack,$safeeval,undef,1)) { my $name=$token->[2]->{'name'}; $name=~tr/A-Z/a-z/; $name=~s/\s/\_/gs; $name=~s/\W//gs; if ($name) { $currentstring='<'.$name; my $display=&Apache::lonxml::get_param ('display',$parstack,$safeeval,undef,1); if ($display) { $display=~s/\"/\'/g; $currentstring.=' display="'.$display.'"'; } $currentstring.='>'. &Apache::lonxml::get_param ('content',$parstack,$safeeval,undef,1). '</'.$name.'>'; } my $display=&Apache::lonxml::get_param ('display',$parstack,$safeeval,undef,1); if ($display) { $display=&HTML::Entities::encode($display,'<>&"'); $currentstring.='<'.$name.'.display>'.$display. '</'.$name.'.display>'; } } } elsif ($target eq 'tex') { my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval); my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval); if ((not defined $content) && (not defined $name)) { &Apache::lonxml::startredirection(); } } return $currentstring; } sub end_meta { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { my $args=''; if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } if ($args ne '') { $currentstring = $token->[4]; } } elsif ($target eq 'tex') { my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval); my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval); if ((not defined $content) && (not defined $name)) { &Apache::lonxml::endredirection(); } } return $currentstring; } # accessrule sub start_accessrule { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $currentstring = ''; my $eff=&Apache::lonxml::get_param ('effect',$parstack,$safeeval,undef,1); my $realm=&Apache::lonxml::get_param ('realm',$parstack,$safeeval,undef,1); my $role=&Apache::lonxml::get_param ('role',$parstack,$safeeval,undef,1); $realm=~s/\s+//g; $realm=~s/\//\_/g; $realm=~s/^\_//; $realm=~s/\W/\;/g; $role=~s/\s+//g; $role=~s/\//\_/g; $role=~s/\W/\;/g; if ($target eq 'web') { my $args=''; if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } if ($args eq '') { &Apache::lonxml::get_all_text("/accessrule",$parser,$style); } else { $currentstring = $token->[4]; } } if ($target eq 'meta') { $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>'; } return $currentstring; } sub end_accessrule { my ($target,$token,$tagstack,$parstack,$parser) = @_; my $currentstring = ''; if ($target eq 'web') { my $args=''; if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } if ($args ne '') { $currentstring = $token->[4]; } } return $currentstring; } #-- <body> tag (end tag required) sub start_body { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { if ($Apache::lonhomework::parsing_a_problem) { &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems."); return ''; } if (!$Apache::lonxml::registered && $env{'request.state'} eq 'published') { $currentstring.='<head>'. &Apache::lonmenu::registerurl(undef,$target).'</head>'; } # Accessibility if ($env{'browser.imagesuppress'} eq 'on') { delete($token->[2]->{'background'}); } if ($env{'browser.fontenhance'} eq 'on') { my $style=''; foreach my $key (keys(%{$token->[2]})) { if ($key =~ /^style$/i) { $style.=$token->[2]->{$key}.';'; delete($token->[2]->{$key}); } } $token->[2]->{'style'}=$style.'; font-size: x-large;'; } if ($env{'browser.blackwhite'} eq 'on') { delete($token->[2]->{'font'}); delete($token->[2]->{'link'}); delete($token->[2]->{'alink'}); delete($token->[2]->{'vlink'}); delete($token->[2]->{'bgcolor'}); delete($token->[2]->{'background'}); } # Overload loads my $onLoad=''; foreach my $key (keys(%{$token->[2]})) { if ($key =~ /^onload$/i) { $onLoad.=$token->[2]->{$key}.';'; delete($token->[2]->{$key}); } } $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad; my $onUnload=''; foreach my $key (keys(%{$token->[2]})) { if ($key =~ /^onunload$/i) { $onUnload.=$token->[2]->{$key}.';'; delete($token->[2]->{$key}); } } $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents(). ';'.$onUnload; $currentstring .= '<'.$token->[1]; foreach (keys %{$token->[2]}) { $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"'; } $currentstring.='>'; &Apache::lontexconvert::jsMath_reset(); if ($env{'environment.texengine'} eq 'jsMath') { $currentstring.=&Apache::lontexconvert::jsMath_header(); } if ($env{'request.state'} ne 'published') { if ($env{'environment.remote'} eq 'off') { $currentstring.= &Apache::lonmenu::constspaceform(). &Apache::lonmenu::menubuttons(1,'web',1); } $currentstring.=(<<EDITBUTTON); <form method="post"> <input type="submit" name="editmode" accesskey="e" value="Edit" /> </form> EDITBUTTON } else { $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1); } $currentstring.=&Apache::lonxml::message_location(); } elsif ($target eq 'tex') { $currentstring = '\begin{document}'; } return $currentstring; } sub end_body { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # Close off unclosed <p> if ($target eq 'web') { $currentstring .= &Apache::lonxml::xmlend($target,$parser); } elsif ($target eq 'tex') { $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}'; } return $currentstring; } #-- <center> tag (end tag required) sub start_center { my ($target,$token) = @_; my $currentstring = &end_p(); # Close off any prior para. if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\begin{center}'; } return $currentstring; } sub end_center { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = '\end{center}'; } return $currentstring; } #-- <b> tag (end tag required) # NOTE: In TeX mode disables internal <p> sub start_b { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { &disable_para(); $currentstring .= '\textbf{'; } return $currentstring; } sub end_b { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { &enable_para(); $currentstring = '}'; } return $currentstring; } #-- <strong> tag (end tag required) # NOTE: in TeX mode disables internal <p> sub start_strong { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { &disable_para(); $currentstring = '\textbf{'; } return $currentstring; } sub end_strong { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { &enable_para(); $currentstring = '}'; } return $currentstring; } #-- <h1> tag (end tag required) sub start_h1 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # Close off any prior para. if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1)); if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; } elsif ($align eq 'right') { $pre=' \hfill \llap{'; } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } elsif ($target eq 'meta') { $currentstring.='<subject>'; &start_output($target); } return $currentstring; } sub end_h1 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; } elsif ($align eq 'right') { $post='}'.'\vskip 0 mm '; } $currentstring .= '}}'.$post; } elsif ($target eq 'meta') { &end_output($target); $currentstring='</subject>'; } return $currentstring; } #-- <h2> tag sub start_h2 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # Close off any prior para. if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; } elsif ($align eq 'right') { $pre=' \hfill \llap{'; } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } return $currentstring; } sub end_h2 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; } elsif ($align eq 'right') { $post='}'.'\vskip 0 mm '; } $currentstring .= '}}'.$post; } return $currentstring; } #-- <h3> tag sub start_h3 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # Close off any prior para. if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; } elsif ($align eq 'right') { $pre=' \hfill \llap{'; } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } return $currentstring; } sub end_h3 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; } elsif ($align eq 'right') { $post='}'.'\vskip 0 mm '; } $currentstring .= '}}'.$post; } return $currentstring; } #-- <h4> tag sub start_h4 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # Close off any prior para. if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; } elsif ($align eq 'right') { $pre=' \hfill \llap{'; } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } return $currentstring; } sub end_h4 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; } elsif ($align eq 'right') { $post='}'.'\vskip 0 mm '; } $currentstring .= '}}'.$post; } return $currentstring; } #-- <h5> tag sub start_h5 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # Close off any prior paras. if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; } elsif ($align eq 'right') { $pre=' \hfill \llap{'; } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } return $currentstring; } sub end_h5 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; } elsif ($align eq 'right') { $post='}'.'\vskip 0 mm '; } $currentstring .= '}}'.$post; } return $currentstring; } #-- <h6> tag sub start_h6 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # Close off any prior paras. if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $pre='\begin{center}'; } elsif ($align eq 'left') { $pre='\rlap{'; } elsif ($align eq 'right') { $pre=' \hfill \llap{'; } my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0); if (not defined $TeXsize) {$TeXsize="large";} $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; } return $currentstring; } sub end_h6 { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { my $post='\vskip 0 mm '; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $post='\end{center}'; } elsif ($align eq 'left') { $post='} \hfill'.'\vskip 0 mm '; } elsif ($align eq 'right') { $post='}'.'\vskip 0 mm '; } $currentstring .= '}}'.$post; } return $currentstring; } #--- <cite> tag (end tag required) sub start_cite { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; } return $currentstring; } sub end_cite { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } return $currentstring; } #-- <i> tag (end tag required) sub start_i { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; } return $currentstring; } sub end_i { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } return $currentstring; } #-- <address> tag (end tag required) sub start_address { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; } return $currentstring; } sub end_address { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } return $currentstring; } #-- <dfn> tag (end tag required) sub start_dfn { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; } return $currentstring; } sub end_dfn { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } return $currentstring; } #-- <tt> tag (end tag required) sub start_tt { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\texttt{'; } return $currentstring; } sub end_tt { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } return $currentstring; } #-- <kbd> tag (end tag required) sub start_kbd { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\texttt{'; } return $currentstring; } sub end_kbd { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } return $currentstring; } #-- <code> tag (end tag required) sub start_code { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\texttt{'; } return $currentstring; } sub end_code { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } return $currentstring; } #-- <em> tag (end tag required) sub start_em { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\emph{'; } return $currentstring; } sub end_em { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } return $currentstring; } #-- <q> tag (end tag required) sub start_q { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\emph{'; } return $currentstring; } sub end_q { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } return $currentstring; } # <p> is a bit strange since it does not require a closing </p> # However in latex, we must often output closing stuff to end # environments and {}'s etc. Therefore we do all the work # of figuring out the ending strings in the start tag processing, # and provide a mechanism to output the stop text external # to tag processing. # { my $closing_string = ''; # String required to close <p> # Some tags are <p> fragile meaning that <p> inside of them # does not work within TeX mode. This is managed via the # counter below: # my $para_disabled = 0; sub disable_para { $para_disabled++; } sub enable_para { $para_disabled--; } #-- <p> tag (end tag optional) #optional attribute - align="center|left|right" sub start_p { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= &end_p(); # close off prior para if in progress. $currentstring .= $token->[4]; if (! ($currentstring =~ /\//)) { $closing_string = '</p>'; # Deal correctly with <p /> e.g. } } elsif ($target eq 'tex' && !$para_disabled) { $currentstring .= &end_p(); # close off prior para if in progress. my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $currentstring .='\begin{center}\par'; $closing_string = '\end{center}'; } elsif ($align eq 'right') { $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{'; $closing_string= '}}'; } elsif ($align eq 'left') { $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{\rlap{'; $closing_string = '}\hfill}'; } else { $currentstring.='\par '; $closing_string = '\strut\\\\\strut '; } } return $currentstring; } # # End paragraph processing just requires that we output the # closing string that was saved and blank it. sub end_p { # Note only 'tex' mode uses disable_para and enable_para # so we don't need to know the target in the check below: if (!$para_disabled) { my $current_string = $closing_string; $closing_string = ''; # Not in a para anymore. return $current_string; } else { return ''; } } } #-- <br> tag (end tag forbidden) sub start_br { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { 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') || ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) { $signal=1; last; } } if ($signal) { $currentstring .= ' \vskip 0 mm '; } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') { $currentstring .= '\strut \\\\ \strut '; } } return $currentstring; } sub end_br { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } return $currentstring; } #-- <big> tag (end tag required) sub start_big { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '{\large '; } return $currentstring; } sub end_big { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } return $currentstring; } #-- <small> tag (end tag required) sub start_small { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '{\footnotesize '; } return $currentstring; } sub end_small { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}'; } return $currentstring; } #-- <basefont> tag (end tag forbidden) sub start_basefont { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); if (defined $basesize) { $currentstring = '{\\'.$basesize.' '; } } return $currentstring; } sub end_basefont { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); if (defined $basesize) { $currentstring = '}'; } } return $currentstring; } #-- <font> tag (end tag required) sub start_font { my ($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) { if (($env{'browser.fontenhance'} eq 'on') || ($env{'browser.blackwhite'} eq 'on')) { return ''; } } $currentstring = $token->[4]; } elsif ($target eq 'tex') { my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); if (defined $fontsize) { $currentstring = '{\\'.$fontsize.' '; } } return $currentstring; } sub end_font { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval); if (defined $fontsize) { $currentstring = '}'; } } return $currentstring; } #-- <strike> tag (end tag required) sub start_strike { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { &Apache::lonxml::startredirection(); } return $currentstring; } sub end_strike { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring=&Apache::lonxml::endredirection(); $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g; $currentstring=~s/^\s*(\S)/\\underline\{$1/; $currentstring=~s/(\S)\s*$/$1\}/; } return $currentstring; } #-- <s> tag (end tag required) sub start_s { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { &Apache::lonxml::startredirection(); } return $currentstring; } sub end_s { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring=&Apache::lonxml::endredirection(); $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g; $currentstring=~s/^\s*(\S)/\\underline\{$1/; $currentstring=~s/(\S)\s*$/$1\}/; } return $currentstring; } #-- <sub> tag (end tag required) sub start_sub { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\ensuremath{_{'; } return $currentstring; } sub end_sub { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}}'; } return $currentstring; } #-- <sup> tag (end tag required) sub start_sup { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\ensuremath{^{'; } return $currentstring; } sub end_sup { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '}}'; } return $currentstring; } #-- <hr> tag (end tag forbidden) sub start_hr { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # End enclosing para. if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); if (defined $LaTeXwidth) { if ($LaTeXwidth=~/^%/) { substr($LaTeXwidth,0,1)=''; $LaTeXwidth=($LaTeXwidth/100).'\textwidth'; } } else { $LaTeXwidth ='0.9\textwidth'; } my ($pre,$post); my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if (($align eq 'center') || (not defined $align)) { $pre=''; $post=''; } elsif ($align eq 'left') { $pre='\rlap{'; $post='} \hfill'; } elsif ($align eq 'right') { $pre=' \hfill \llap{'; $post='}'; } $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['. $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm '; } return $currentstring; } sub end_hr { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } return $currentstring; } #-- <div> tag (end tag required) { # Since div can be nested, the stack below is used # in 'tex' mode to store the ending strings # for the div stack. my @div_end_stack; sub start_div { my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_; my $currentstring = &end_p(); # Close enclosing para. if ($target eq 'web') { $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}'; $endstring = '\end{center}'; } elsif ($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') { $currentstring .= $token->[2]; } if ($target eq 'tex') { my $endstring = pop @div_end_stack; $currentstring .= $endstring; } return $currentstring; } } #-- <a> tag (end tag required) sub start_a { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval, undef,1); $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href}); } elsif ($target eq 'tex') { my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1); my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1); if ($a=~/\S/) { $a=~s/([^\\])%/$1\\\%/g; $currentstring .= '\ref{URI: '.$a.'}'; } elsif ($b=~/\S/) { $currentstring .= '\ref{Anchor: '.$b.'}'; } else { $currentstring.=''; } } return $currentstring; } sub end_a { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } return $currentstring; } #-- <li> tag (end tag optional) sub start_li { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { 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/) { $currentstring .= ' \item[$\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 $currentstring = &end_p(); # In case there's a <p> in the <li> if ($target eq 'web') { $currentstring .= $token->[2]; } return $currentstring; } #-- <u> tag (end tag required) sub start_u { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { &Apache::lonxml::startredirection(); } return $currentstring; } sub end_u { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring=&Apache::lonxml::endredirection(); $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g; $currentstring=~s/^\s*(\S)/\\underline\{$1/; $currentstring=~s/(\S)\s*$/$1\}/; } return $currentstring; } #-- <ul> tag (end tag required) sub start_ul { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # Close off enclosing list. if ($target eq 'web') { $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$}'; } elsif ($TeXtype eq 'circle') { $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'. '\renewcommand{\labelitemii}{$\circ$}'. '\renewcommand{\labelitemiii}{$\circ$}'. '\renewcommand{\labelitemiv}{$\circ$}'; } elsif ($TeXtype eq 'square') { $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'. '\renewcommand{\labelitemii}{$\diamond$}'. '\renewcommand{\labelitemiii}{$\diamond$}'. '\renewcommand{\labelitemiv}{$\diamond$}'; } $currentstring .= '\strut \begin{itemize}'; } return $currentstring; } sub end_ul { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'. '\renewcommand{\labelitemii}{$\bullet$}'. '\renewcommand{\labelitemiii}{$\bullet$}'. '\renewcommand{\labelitemiv}{$\bullet$}\strut '; } return $currentstring; } #-- <menu> tag (end tag required) sub start_menu { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $currentstring = " \\begin{itemize} "; } return $currentstring; } sub end_menu { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = " \\end{itemize}"; } return $currentstring; } #-- <dir> tag (end tag required) sub start_dir { my ($target,$token) = @_; my $currentstring = &end_p(); # In case there's a <p> prior to the list. if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= " \\begin{itemize} "; } return $currentstring; } sub end_dir { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = " \\end{itemize}"; } return $currentstring; } #-- <ol> tag (end tag required) sub start_ol { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # In case there's a <p> prior to the list. if ($target eq 'web') { $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') { $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'. '\renewcommand{\labelenumii}{\arabic{enumii}.}'. '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'. '\renewcommand{\labelenumiv}{\arabic{enumiv}.}'; } elsif ($type eq 'A') { $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'. '\renewcommand{\labelenumii}{\Alph{enumii}.}'. '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'. '\renewcommand{\labelenumiv}{\Alph{enumiv}.}'; } elsif ($type eq 'a') { $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'. '\renewcommand{\labelenumii}{\alph{enumii}.}'. '\renewcommand{\labelenumiii}{\alph{enumiii}.}'. '\renewcommand{\labelenumiv}{\alph{enumiv}.}'; } elsif ($type eq 'i') { $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'. '\renewcommand{\labelenumii}{\roman{enumii}.}'. '\renewcommand{\labelenumiii}{\roman{enumiii}.}'. '\renewcommand{\labelenumiv}{\roman{enumiv}.}'; } elsif ($type eq 'I') { $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'. '\renewcommand{\labelenumii}{\Roman{enumii}.}'. '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'. '\renewcommand{\labelenumiv}{\Roman{enumiv}.}'; } $currentstring .= '\strut \begin{enumerate}'; } return $currentstring; } sub end_ol { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $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}.}\strut '; } return $currentstring; } #-- <dl> tag (end tag required) sub start_dl { my ($target,$token) = @_; my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list. if ($target eq 'web') { $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 $currentstring; } sub end_dl { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { if ($Apache::londefdef::DT[-1]) { &end_dt(@_); } if ($Apache::londefdef::DD[-1]) { &end_dd(@_); } foreach my $element (@{$Apache::londefdef::description[-1]}) { $currentstring.=' '.$element.' '; } 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 $currentstring; } #-- <dt> tag (end tag optional) sub start_dt { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring=''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { if ($Apache::londefdef::DT[-1]) { &end_dt(@_); } if ($Apache::londefdef::DD[-1]) { &end_dd(@_); } &Apache::lonxml::startredirection(); $Apache::londefdef::DT[-1]++; $Apache::londefdef::seenDT[-1]=1; } return $currentstring; } sub end_dt { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { 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; } sub item_cleanup { my $item=&Apache::lonxml::endredirection(); $item=~s/\\begin{center}//g; $item=~s/\\end{center}//g; return $item; } #-- <dd> tag (end tag optional) sub start_dd { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { 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 '); } push(@{$Apache::londefdef::description[-1]},''); $Apache::londefdef::description[-1]->[-1].=' \strut '; $Apache::londefdef::DD[-1]++; &Apache::lonxml::startredirection(); } return $currentstring; } sub end_dd { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $Apache::londefdef::description[-1]->[-1].= &Apache::lonxml::endredirection().' \vskip 0mm '; $Apache::londefdef::DD[-1]--; } return $currentstring; } #-- <table> tag (end tag required) # <table> also ends any prior <p> that is not closed. # but, unless I allow <p>'s to nest, that's the # only way I could think of to allow <p> in # <tr> <th> bodies # #list of supported attributes: border,width,TeXwidth sub start_table { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $textwidth = ''; my $currentstring = &end_p(); if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $aa = {}; push @Apache::londefdef::table, $aa; $Apache::londefdef::table[-1]{'row_number'} = -1; #maximum table's width (default coincides with text line length) if ($#Apache::londefdef::table==0) { $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm $textwidth=~/(\d+\.?\d*)/; $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame } else { if ($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 { #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. my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); if (not defined $TeXwidth) { $TeXwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1); } else { $Apache::londefdef::table[-1]{'forcedtablewidth'} = 1; } if ($TeXwidth=~/%/) { $Apache::londefdef::table[-1]{'percent'}=1; $TeXwidth=~/(\d+)/; $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100; } else { $Apache::londefdef::table[-1]{'width'}=$TeXwidth; } #table's border 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 '; $Apache::londefdef::table[-1]{'vinc'} = '&'; $Apache::londefdef::table[-1]{'vvinc'} = '|'; } else { $Apache::londefdef::table[-1]{'hinc'} = ''; $Apache::londefdef::table[-1]{'vinc'} = '&'; $Apache::londefdef::table[-1]{'vvinc'} = ''; } if ($#Apache::londefdef::table==0) { # Note that \newline seems to destroy the alignment envs. # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}'; $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}'; } $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} '; $Apache::londefdef::table[-1]{'TeXlen'}=[]; $Apache::londefdef::table[-1]{'objectlen'}=[]; $Apache::londefdef::table[-1]{'objectsignal'}=[]; $Apache::londefdef::table[-1]{'maxlen'}=[]; $Apache::londefdef::table[-1]{'minlen'}=[]; $Apache::londefdef::table[-1]{'content'}=[]; $Apache::londefdef::table[-1]{'align'}=[]; $currentstring.='\keephidden{NEW TABLE ENTRY}'; } return $currentstring; } sub end_table { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { my $inmemory = ''; my $output = ''; 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][$jn]; } } } #free space and number of empty columns my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0); if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;} for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) { $empty_columns++; } else { $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]; } } #boundaries for contents columns my @min_len=();#columns can not be narrower my @max_len=();#maximum length of column for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { my ($localmin,$localmax)=(0,0); for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) { $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]; } if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) { $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]; } } push @min_len, $localmin; push @max_len, $localmax; } for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { my $localmin=0,; for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) { $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]; } } if ($max_len[$jn]<$localmin) { $max_len[$jn]=$localmin; $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1; }#object size is bigger if ($min_len[$jn]<$localmin) { $min_len[$jn]=$localmin; $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1; }#object size is bigger if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) { $min_len[$jn]=0; $max_len[$jn]=0; } } #final adjustment of column width my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array my @adjust=(); #step 1. adjustment by maximum value my $space_neeeded=0; for (my $jn=0;$jn<=$#max_len;$jn++) { $space_neeeded=$space_neeeded+$max_len[$jn]; } if ($space_neeeded<=$available_space) { for (my $jn=0;$jn<=$#max_len;$jn++) { if ($fwidth[$jn]==0) { $fwidth[$jn]=$max_len[$jn]; } } } else { #step 2. adjustment by minimum value (estimation) $space_neeeded=0; for (my $jn=0;$jn<=$#min_len;$jn++) { $space_neeeded+=$min_len[$jn]; } if ($space_neeeded>$available_space) { $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} '; for (my $jn=0;$jn<=$#max_len;$jn++) { if ($fwidth[$jn]==0) { $fwidth[$jn]=$min_len[$jn]; } } #check if we have objects which can be scaled my $how_many_to_scale=0; my @to_scale=(); for (my $jn=0;$jn<=$#max_len;$jn++) { if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') { $how_many_to_scale++; push @to_scale, $jn; } } if ($how_many_to_scale>0) { my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale; foreach my $jn (@to_scale) { for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/; if ($1 ne '') { my $current_length=&recalc($1); $current_length=~/(\d+\.?\d*)/; $current_length=$current_length-$space_to_adjust; $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/; } $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/; 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 if it is defined in % or as TeXwidth if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) { my $current=0; for (my $i=0;$i<=$#fwidth;$i++) { $current+=$fwidth[$i]; } my $coef=$Apache::londefdef::table[-1]{'width'}/$current; for (my $i=0;$i<=$#fwidth;$i++) { $fwidth[$i]*=$coef; } } #removing of empty columns if allowed my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0); if ($permission eq 'yes') { my @cleaned_table=(); my @cleaned_header=(); my $colind=0; for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) { if ($fwidth[$jn]!=0) { #we need to copy column for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn]; $cleaned_header[$colind]=$fwidth[$jn]; } $colind++; } } $Apache::londefdef::table[-1]{'content'}=\@cleaned_table; @fwidth=@cleaned_header; } #construct header of the table my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'}; for (my $in=0;$in<=$#fwidth;$in++) { $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'}; } $header_of_table .= '}'; #fill the table for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) { for (my $jn=0;$jn<=$#fwidth;$jn++) { if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') { # $output.='\vspace*{-6 mm}\begin{center}'; $output.='\begin{center}'; } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') { $output.=' \hfill \llap{' } $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn]; if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') { # $output.='\end{center}\vspace*{-6 mm}'; $output.='\end{center}'; } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') { $output.='} '; } if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};} } $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' '; } # Note that \newline destroys alignment env's produced by e.g. <div> # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut '; $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut '; if ($#Apache::londefdef::table > 0) { my $inmemory = $Apache::londefdef::table[-1]{'output'}; # Figure out max/and min width by summing us and then # apply that to the current column of the table we nest in # if it's larger than the current width or the current width # is undefined. # my $min_nested_width = 0; my $max_nested_width = 0; for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) { $min_nested_width += $min_len[$col]; $max_nested_width += $max_len[$col]; } # Fudge in an extra 5 mm for borders etc: $min_nested_width += 5; $max_nested_width += 5; my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'}; my $outer_row = $Apache::londefdef::table[-2]{'row_number'}; if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) { $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width; } if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) { $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width; } pop @Apache::londefdef::table; push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory; } else { $currentstring .= $Apache::londefdef::table[-1]{'output'}; pop @Apache::londefdef::table; undef @Apache::londefdef::table; } } return $currentstring; } #-- <tr> tag (end tag optional) sub start_tr { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $Apache::londefdef::table[-1]{'row_number'}++; my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($alignchar ne '') { 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'}; $Apache::londefdef::table[-1]{'counter_columns'} = -1; push @ {$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 $currentstring = &end_p(); # Close any pending <p> in the row. if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { if ($Apache::londefdef::TD_redirection) { &end_td_tex($parstack,$parser,$safeeval); } # Counter columns must be the maximum number of columns seen # in the table so far so: if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) { $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'}; } } return $currentstring; } #-- <td> tag (end tag optional) sub start_td { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $Apache::londefdef::TD_redirection = 1; &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval); } return $currentstring; } sub tag_check { my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_; my @ar=@$parstack; for (my $i=$#ar-1;$i>=0;$i--) { if (lc($$tagstack[$i]) eq $good_tag) { &start_td_tex($parstack,$parser,$safeeval); last; } elsif (lc($$tagstack[$i]) eq $bad_tag) { splice @ar, $i+1; &end_td_tex(\@ar,$parser,$safeeval); &start_td_tex($parstack,$parser,$safeeval); last; } } return ''; } sub start_td_tex { my ($parstack,$parser,$safeeval) = @_; my $alignchar = substr(&Apache::lonxml::get_param('align',$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'}] },$1; } &Apache::lonxml::startredirection(); return ''; } sub end_td_tex { my ($parstack,$parser,$safeeval) = @_; my $current_row = $Apache::londefdef::table[-1]{'row_number'}; my $data=&Apache::lonxml::endredirection(); my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); if (defined $TeXwidth) { push @ {$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'}[$Apache::londefdef::table[-1]{'row_number'}] },'0'; } elsif ($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;} $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//; } push @ {$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,$min_length)=(0,0); if ($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++) { 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; return ''; } sub end_td { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $Apache::londefdef::TD_redirection =0; &end_td_tex($parstack,$parser,$safeeval); } return $currentstring; } #-- <th> tag (end tag optional) sub start_th { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $Apache::londefdef::TD_redirection = 1; &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval); } return $currentstring; } sub tagg_check { my ($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; } } 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]/; } #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 $currentstring = &end_p(); # Close any open <p> in the row. if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $Apache::londefdef::TD_redirection =0; &end_th_tex($parstack,$parser,$safeeval); } return $currentstring; } #-- <img> tag (end tag forbidden) # # Render the <IMG> tag. # <IMG> has the following attributes (in addition to the # standard HTML ones: # TeXwrap - Governs how the tex target will try to wrap text around # horizontally aligned images. # TeXwidth - The width of the image when rendered for print (mm). # TeXheight - The height of the image when rendered for print (mm) # (Note there seems to also be support for this as a % of page size) # sub start_img { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval, undef,1); if (not $src and ($target eq 'web' or $target eq 'tex')) { my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style); return ''; } &Apache::lonxml::extlink($src); my $currentstring = ''; my $scaling = .3; # Render unto browsers that which are the browser's... if ($target eq 'web') { if ($env{'browser.imagesuppress'} ne 'on') { $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src}); } else { my $alttag= &Apache::lonxml::get_param ('alt',$parstack,$safeeval,undef,1); unless ($alttag) { $alttag=&Apache::lonmeta::alttag ($Apache::lonxml::pwd[-1],$src); } $currentstring.='[IMAGE: '.$alttag.']'; } # and render unto TeX that which is LaTeX } elsif ($target eq 'tex') { # # 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) { if (&is_inside_of($tagstack, "table")) { $align = "right"; # Force wraptext use. } else { $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"; } &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src"); #if original gif/jpg/png file exist do following: my $origsrc=$src; my ($path,$file) = &get_eps_image($src); $src=&Apache::lonnet::filelocation($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 $destpath = $path; $destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit. my $destfile = $file; $destfile =~ s/ /\_/g; my $size; if ($width_param) { $size.='width='.$width_param.' mm,'; } if ($height_param) { $size.='height='.$height_param.' mm]'; } $size='['.$size; $size=~s/,$/]/; $currentstring .= '\graphicspath{{'.$destpath.'}}' .'\includegraphics'.$size.'{'.$destfile.'} '; # If there's an alignment specification we need to honor it here. # For the horizontal alignments, we will also honor the # value of the latex specfication. The default is parbox, # and that's used for illegal values too. # # Even though we set a default alignment value, the user # could have given us an illegal value. In that case we # just use the default alignment of bottom.. if ($align eq "top") { $currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}'; } elsif (($align eq "center") || ($align eq "middle")) { # Being kind my $offset = $height_param/2; $currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}'; } elsif ($align eq "left") { if ($latex_rendering eq "parpic") { $currentstring = '\parpic[l]{'.$currentstring.'}'; } else { # wrapfig render $currentstring = '\begin{wrapfigure}{l}{'.$width_param.'mm}' .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}'; } } elsif ($align eq "right") { if ($latex_rendering eq "parpic") { $currentstring = '\parpic[r]{'.$currentstring.'}'; } else { # wrapfig rendering $currentstring = '\begin{wrapfigure}{r}{'.$width_param.'mm}' .'\scalebox{1.0}{'.$currentstring.'}\end{wrapfigure}'; } } else { # Bottom is also default. # $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}'; } } else { &Apache::lonxml::debug("$src does not exist"); #original image file doesn't exist so check the alt attribute my $alt = &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1); unless ($alt) { $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src); } if ($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').'<br />'; $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />'; $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5); $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />'; $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5); $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5); $currentstring .=&Apache::edit::select_arg('Alignment:','align', ['','bottom','middle','top','left','right'],$token,5); $currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap', ['', 'parbox', 'parpic'], $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); $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" '; if ($width) { $currentstring.=' width="'.$width.'" '; } if ($height) { $currentstring.=' height="'.$height.'" '; } $currentstring .= ' />'; } elsif ($target eq 'modified') { my ($osrc,$owidth,$oheight)= ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'}); my $ctag=&Apache::edit::get_new_args($token,$parstack, $safeeval,'src','alt','align', 'TeXwidth','TeXheight', 'TeXwrap', 'width','height'); my ($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') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = ''; } return $currentstring; } #-- <applet> tag (end tag required) sub start_applet { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1); &Apache::lonxml::extlink($code); my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval, undef,1); &Apache::lonxml::extlink($archive); my $currentstring = ''; if ($target eq 'web') { 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, $safeeval,undef,1); unless ($alttag) { $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1], $code); } $currentstring='[APPLET: '.$alttag.']'; } } elsif ($target eq 'tex') { my $alttag= &Apache::lonxml::get_param('alt',$parstack, $safeeval,undef,1); unless ($alttag) { my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval, undef,1); $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1], $code); } $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag. '.}\end{center}'; } return $currentstring; } sub end_applet { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { } return $currentstring; } #-- <embed> tag (end tag optional/required) sub start_embed { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); &Apache::lonxml::extlink($src); my $currentstring = ''; if ($target eq 'web') { if ($env{'browser.embedsuppress'} ne 'on') { $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src}); } else { my $alttag=&Apache::lonxml::get_param ('alt',$parstack,$safeeval,undef,1); unless ($alttag) { $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src); } $currentstring='[EMBED: '.$alttag.']'; } } elsif ($target eq 'tex') { } return $currentstring; } sub end_embed { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { } return $currentstring; } #-- <param> tag (end tag forbidden) sub start_param { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; if (&Apache::lonxml::get_param('name',$parstack, $safeeval,undef,1)=~/^cabbase$/i) { 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') { 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 $currentstring; } sub end_param { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { } return $currentstring; } #-- <allow> tag sub start_allow { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); &Apache::lonxml::extlink($src); if ($target eq 'tex') { &image_replication($src); } my $result; if ($target eq 'edit') { $result .=&Apache::edit::tag_start($target,$token); $result .=&Apache::edit::text_arg('File Spec:','src',$token,70); $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row(); } elsif ($target eq 'modified') { my $constructtag=&Apache::edit::get_new_args($token,$parstack, $safeeval,'src'); if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); } } return $result; } sub end_allow { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; if ( $target eq 'edit') { return (&Apache::edit::end_table()); } return ''; } #-- Frames (end tag required) #-- <frameset> sub start_frameset { my ($target,$token) = @_; my $currentstring = ''; # Close any pending para. if ($target eq 'web') { if (!$Apache::lonxml::registered && $env{'request.state'} eq 'published') { $currentstring.='<head>'. &Apache::lonmenu::registerurl(undef,$target).'</head>'; } my $onLoad=''; foreach my $key (keys(%{$token->[2]})) { if ($key =~ /^onload$/i) { $onLoad.=$token->[2]->{$key}.';'; delete($token->[2]->{$key}); } } $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad; my $onUnload=''; foreach my $key (keys(%{$token->[2]})) { if ($key =~ /^onunload$/i) { $onUnload.=$token->[2]->{$key}.';'; delete($token->[2]->{$key}); } } $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents(). ';'.$onUnload; $currentstring .= '<'.$token->[1]; foreach (keys %{$token->[2]}) { $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"'; } $currentstring.='>'; } return $currentstring; } sub end_frameset { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <xmp> (end tag required) sub start_xmp { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\begin{verbatim}'; } return $currentstring; } sub end_xmp { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '\end{verbatim}'; } return $currentstring; } #-- <pre> (end tag required) sub start_pre { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # close off pending <p> if ($target eq 'web') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\begin{verbatim}'; } return $currentstring; } sub end_pre { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '\end{verbatim}'; } return $currentstring; } #-- <insert> sub start_insert { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1); $currentstring .= '<b>'.$display.'</b>';; } return $currentstring; } sub end_insert { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= ''; } return $currentstring; } #-- <externallink> sub start_externallink { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1); $currentstring .= '<b>'.$display.'</b>';; } return $currentstring; } sub end_externallink { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring .= ''; } return $currentstring; } #-- <blankspace heigth=""> sub start_blankspace { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = &end_p(); # closes off any unclosed <p> if ($target eq 'tex') { my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1); $currentstring .= '\vskip '.$howmuch.' '; } return $currentstring; } sub end_blankspace { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'tex') { $currentstring .= ''; } return $currentstring; } #-- <abbr> tag (end tag required) sub start_abbr { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_abbr { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <acronym> tag (end tag required) sub start_acronym { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_acronym { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <area> tag (end tag forbidden) sub start_area { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_area { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <base> tag (end tag forbidden) sub start_base { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_base { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <bdo> tag (end tag required) sub start_bdo { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_bdo { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <bgsound> tag (end tag optional) sub start_bgsound { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_bgsound { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <blink> tag (end tag required) sub start_blink { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_blink { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <blockquote> tag (end tag required) sub start_blockquote { my ($target,$token) = @_; my $currentstring = &end_p(); # Close any unclosed <p> if ($target eq 'web') { $currentstring .= $token->[4]; } return $currentstring; } sub end_blockquote { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <button> tag (end tag required) sub start_button { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_button { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <caption> tag (end tag required) sub start_caption { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_caption { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <col> tag (end tag forbdden) sub start_col { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_col { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <colgroup> tag (end tag optional) sub start_colgroup { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_colgroup { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <del> tag (end tag required) sub start_del { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_del { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <fieldset> tag (end tag required) sub start_fieldset { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_fieldset { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <frame> tag (end tag forbidden) sub start_frame { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_frame { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <iframe> tag (end tag required) sub start_iframe { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_iframe { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <ins> tag (end tag required) sub start_ins { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_ins { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <isindex> tag (end tag forbidden) sub start_isindex { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_isindex { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <keygen> tag (end tag forbidden) sub start_keygen { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_keygen { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <label> tag sub start_label { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_label { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <layer> tag (end tag required) sub start_layer { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_layer { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <legend> tag (end tag required) sub start_legend { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_legend { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <link> tag (end tag forbidden) sub start_link { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web') { my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval, undef,1); &Apache::lonxml::extlink($href); $currentstring = $token->[4]; } return $currentstring; } sub end_link { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <marquee> tag (end tag optional) sub start_marquee { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_marquee { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <multicol> tag (end tag required) sub start_multicol { my ($target,$token) = @_; my $currentstring = &end_p(); # Close any pending <p> if ($target eq 'web') { $currentstring .= $token->[4]; } return $currentstring; } sub end_multicol { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <nobr> tag (end tag required) sub start_nobr { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $currentstring='\mbox{'; } return $currentstring; } sub end_nobr { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring='}'; } return $currentstring; } #-- <noembed> tag (end tag required) sub start_noembed { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_noembed { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <noframes> tag (end tag required) sub start_noframes { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_noframes { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <nolayer> tag (end tag required) sub start_nolayer { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_nolayer { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <noscript> tag (end tag required) sub start_noscript { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_noscript { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <object> tag (end tag required) sub start_object { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_object { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <optgroup> tag (end tag required) sub start_optgroup { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_optgroup { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <samp> tag (end tag required) sub start_samp { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $currentstring='\texttt{'; } return $currentstring; } sub end_samp { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring='}'; } return $currentstring; } #-- <server> tag sub start_server { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_server { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <spacer> tag (end tag forbidden) sub start_spacer { my ($target,$token) = @_; my $currentstring = &end_p(); # Close off any open <p> tag. if ($target eq 'web') { $currentstring .= $token->[4]; } return $currentstring; } sub end_spacer { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <span> tag (end tag required) sub start_span { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_span { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <tbody> tag (end tag optional) sub start_tbody { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_tbody { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <tfoot> tag (end tag optional) sub start_tfoot { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_tfoot { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <thead> tag (end tag optional) sub start_thead { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_thead { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <var> tag sub start_var { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $currentstring = '\textit{'; } return $currentstring; } sub end_var { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = '}'; } return $currentstring; } #-- <wbr> tag (end tag forbidden) sub start_wbr { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[4]; } return $currentstring; } sub end_wbr { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = $token->[2]; } return $currentstring; } #-- <hideweboutput> tag sub start_hideweboutput { my ($target,$token) = @_; if ($target eq 'web') { &Apache::lonxml::startredirection(); } return ''; } sub end_hideweboutput { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web') { $currentstring = &Apache::lonxml::endredirection(); } return ''; } sub image_replication { my $src = shift; 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. $src =~ s/\.eps$/$sext.eps/; } } } } my ($path,$file)=($src=~m|(.*)/([^/]*)$|); &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />"); return ($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\/([^\/]*)\/public_html\//\/$1\//; $newsrc=~s/\/\.\//\//; $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//; if ($newsrc=~/\/home\/httpd\/lonUsers\//) { $newsrc=~s/\/home\/httpd\/lonUsers//; $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//; } if ($newsrc=~/\/userfiles\//) { return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; } else { return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; } } sub file_path { my $src=shift; my ($file,$path); if ($src =~ m!(.*)/([^/]*)$!) { $file = $2; $path = $1.'/'; } return $file,$path; } # 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';} $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/; my $value=$1; my $units=$2; if ($units eq 'cm') { $value*=10; } elsif ($units eq 'in') { $value*=25.4; } elsif ($units eq 'pc') { $value*=(25.4*12/72.27); } elsif ($units eq 'pt') { $value*=(25.4/72.27); } return $value.' mm'; } sub LATEX_length { my $garbage=shift; $garbage=~s/^\s+$//; $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)/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; } # 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; __END__