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- lots of \w -> probper regexp replacements
# The LearningOnline Network with CAPA # Tags Default Definition Module # # $Id: londefdef.pm,v 1.345 2006/12/05 02:55:54 albertel 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 LONCAPA(); # 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); $Apache::londefdef::list_index=0; undef($Apache::londefdef::head); undef($Apache::londefdef::title); } #======================= TAG SUBROUTINES ===================== #-- <output> sub start_output { my ($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,$$parstack[-1]); #&Apache::lonxml::debug("M is evaulated to:$inside:"); } my $tex = $inside; my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval); $currentstring = &Apache::lontexconvert::converted(\$inside,$display); if ($Apache::lontexconvert::errorstring) { my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occured while attempting to convert this TeX: <pre>'; $tex = &HTML::Entities::encode($tex,'<>&"'); my ($linenumber) = ($Apache::lontexconvert::errorstring =~ /Line (\d+)/); if (defined($linenumber)) { my @tex=split("\n",$tex); $tex[$linenumber]='<b><font color="red">'. $tex[$linenumber].'</font></b>'; $tex=join("\n",@tex); } &Apache::lonxml::warning($errormsg.$tex.'</pre>'); $Apache::lontexconvert::errorstring=''; } #&Apache::lonxml::debug("M is ends with:$currentstring:"); $Apache::lonxml::post_evaluate=0; } elsif ($target eq 'tex') { $currentstring = $inside; my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval); if ($eval eq 'on') { $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$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' || $target eq 'webgrade') { 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 $currentstring = ''; if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) { # start_body() takes care of emitting the <html> } elsif ($target eq 'tex') { $currentstring .= '\documentclass[letterpaper,twoside]{article}\raggedbottom'; if (($env{'form.latex_type'}=~'batchmode') || (!$env{'request.role.adv'})) {$currentstring .='\batchmode';} $currentstring .= '\newcommand{\keephidden}[1]{}'. '\renewcommand{\deg}{$^{\circ}$}'. '\usepackage{multirow}'. '\usepackage{longtable}'. '\usepackage{textcomp}'. '\usepackage{makeidx}'. '\usepackage[dvips]{graphicx}'. '\usepackage{wrapfig}'. '\usepackage{picins}'. '\usepackage{epsfig}'. '\usepackage{calc}'. '\usepackage{amsmath}'. '\usepackage{amssymb}'. '\usepackage{amsfonts}'. '\usepackage{amsthm}'. '\usepackage{amscd}'. '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'. '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}'; } return $currentstring; } sub end_html { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { # end_body takes care of the </html> } return $currentstring; } #-- <head> tag (end tag optional) sub start_head { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { &Apache::lonxml::startredirection(); } return $currentstring; } sub end_head { my ($target,$token) = @_; my $currentstring = ''; if (($target eq 'web' && $env{'request.state'} eq 'published') || ($target eq 'webgrade' && $env{'request.state'} eq 'published')) { # in case there is a </head> but no <head> if ($Apache::lonxml::redirection) { $Apache::londefdef::head = &Apache::lonxml::endredirection(); } } return $currentstring; } #-- <map> tag (end tag required) sub start_map { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_map { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <select> tag (end tag required) sub start_select { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_input { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <textarea> tag (end tag required) sub start_textarea { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_textarea { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <form> tag (end tag required) sub start_form { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_form { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <title> tag (end tag required) sub start_title { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $Apache::londefdef::title = &Apache::lonxml::get_all_text('/title',$parser,$style); } elsif ($target eq 'tex') { $currentstring .= '\keephidden{Title of the document: ' } if ($target eq 'meta') { $currentstring='<title>'; &start_output($target); } return $currentstring; } sub end_title { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { # start_title takes care of swallowing the title } elsif ($target eq 'tex') { $currentstring .= '}'; } if ($target eq 'meta') { &end_output($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' || $target eq 'webgrade') { my $args=''; if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; } if ($args eq '') { &Apache::lonxml::get_all_text("/meta",$parser,$style); } else { $currentstring = $token->[4]; } } elsif ($target eq 'meta') { unless (&Apache::lonxml::get_param ('http-equiv',$parstack,$safeeval,undef,1)) { my $name=$token->[2]->{'name'}; $name=~tr/A-Z/a-z/; $name=~s/\s/\_/gs; $name=~s/\W//gs; if ($name) { $currentstring='<'.$name; my $display=&Apache::lonxml::get_param ('display',$parstack,$safeeval,undef,1); if ($display) { $display=~s/\"/\'/g; $currentstring.=' display="'.$display.'"'; } $currentstring.='>'. &Apache::lonxml::get_param ('content',$parstack,$safeeval,undef,1). '</'.$name.'>'; } my $display=&Apache::lonxml::get_param ('display',$parstack,$safeeval,undef,1); if ($display) { $display=&HTML::Entities::encode($display,'<>&"'); $currentstring.='<'.$name.'.display>'.$display. '</'.$name.'.display>'; } } } elsif ($target eq 'tex') { my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval); my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval); if ((not defined $content) && (not defined $name)) { &Apache::lonxml::startredirection(); } } return $currentstring; } sub end_meta { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { my $args=''; if ( $#$parstack > -1 ) { $args=$$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' || $target eq 'webgrade') { if ($Apache::lonhomework::parsing_a_problem) { &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems."); return ''; } if (&is_inside_of($tagstack, "head")) { &end_head(@_); } $currentstring = &Apache::loncommon::start_page($Apache::londefdef::title, $Apache::londefdef::head, {'add_entries' => $token->[2], 'no_title' => 1, 'force_register' => 1}); if ($env{'request.state'} ne 'published') { $currentstring.=&Apache::lonmenu::constspaceform(); $currentstring.=(<<EDITBUTTON); <form method="post"> <input type="submit" name="editmode" accesskey="e" value="Edit" /> </form> <br /> EDITBUTTON } $currentstring.=&Apache::lonxml::message_location(); } elsif ($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' || $target eq 'webgrade') { $currentstring .= &Apache::loncommon::end_page({'discussion' => 1}); } elsif ($target eq 'tex') { $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}'; } return $currentstring; } # \begin{center} causes a new paragprah spacing that looks odd inside # of a table cell. Same at the end of a \center but with a slightly # larger space .. hence center_correction and center_end_correction. # sub center_correction { return '\vspace*{-6 mm}'; } sub center_end_correction { return '\vspace*{-7 mm}'; } #-- <center> tag (end tag required) sub start_center { my ($target,$token,$tagstack) = @_; my $currentstring = &end_p(); # Close off any prior para. if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { if (&is_inside_of($tagstack, "table")) { $currentstring .= ¢er_correction(); } $currentstring .= '\begin{center}'; } return $currentstring; } sub end_center { my ($target,$token,$tagstack) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = '\end{center}'; if (&is_inside_of($tagstack, "table")) { $currentstring .= ¢er_end_correction(); } } return $currentstring; } #-- <b> tag (end tag required) # NOTE: In TeX mode disables internal <p> sub start_b { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $pre='\begin{center}'; } elsif ($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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $pre='\begin{center}'; } elsif ($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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $pre='\begin{center}'; } elsif ($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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $pre='\begin{center}'; } elsif ($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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $pre; my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1); if ($align eq 'center') { $pre='\begin{center}'; } elsif ($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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; } return $currentstring; } sub end_cite { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; } return $currentstring; } sub end_i { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; } return $currentstring; } sub end_address { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\textit{'; } return $currentstring; } sub end_dfn { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\texttt{'; } return $currentstring; } sub end_tt { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\texttt{'; } return $currentstring; } sub end_kbd { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\texttt{'; } return $currentstring; } sub end_code { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\emph{'; } return $currentstring; } sub end_em { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\emph{'; } return $currentstring; } sub end_q { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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 '; $closing_string = '\end{center}'; if (&is_inside_of($tagstack, "table")) { $currentstring = ¢er_correction().$currentstring; } } elsif ($align eq 'right') { $currentstring.="\n".'{\flushright '; # $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{'; $closing_string= "}\n"; } elsif ($align eq 'left') { $currentstring.= "\n".'{\flushleft '; # $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{'; $closing_string = "}\n"; } else { $currentstring.='\par '; if (&is_inside_of($tagstack, 'table')) { $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables. } else { $closing_string = '\strut\\\\\strut '; } } } return $currentstring; } # # End paragraph processing just requires that we output the # closing string that was saved and blank it. sub end_p { # Note only 'tex' mode uses disable_para and enable_para # so we don't need to know the target in the check below: if (!$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' || $target eq 'webgrade') { $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')) { $signal=1; } if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) { $signal = 1; } } if ($signal eq 1) { $currentstring .= ' \vskip 0 mm '; } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') { $currentstring .= '\strut \\\\ \strut '; } else { # Honor break in simple <sup></sup> $currentstring .= '}} \strut \\\\ \strut \ensuremath{^{'; } } return $currentstring; } sub end_br { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } return $currentstring; } #-- <big> tag (end tag required) sub start_big { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '{\large '; } return $currentstring; } sub end_big { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '{\footnotesize '; } return $currentstring; } sub end_small { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { 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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { &Apache::lonxml::startredirection(); } return $currentstring; } sub end_strike { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { &Apache::lonxml::startredirection(); } return $currentstring; } sub end_s { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\ensuremath{_{'; } return $currentstring; } sub end_sub { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\ensuremath{^{'; } return $currentstring; } sub end_sup { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } if ($target eq 'tex') { # 4 possible alignments: left, right, center, and -missing-. my $endstring = ''; my $align = lc(&Apache::lonxml::get_param('align', $parstack, $safeeval, undef, 1)); if ($align eq 'center') { $currentstring .= '\begin{center}'; $endstring = '\end{center}'; if (&is_inside_of($tagstack, "table")) { $currentstring = ¢er_correction().$currentstring; } } elsif ($align eq 'right') { $currentstring .= '\begin{flushright}'; $endstring .= '\end{flushright}'; } elsif ($align eq 'left') { $currentstring .= '\begin{flushleft}'; $endstring = '\end{flushleft}'; } else { } $currentstring .= "\n"; # For human readability. $endstring = "\n$endstring\n"; # For human readability push(@div_end_stack, $endstring); } return $currentstring; } sub end_div { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { 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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[2]; } return $currentstring; } #-- <u> tag (end tag required) sub start_u { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { &Apache::lonxml::startredirection(); } return $currentstring; } sub end_u { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0); $Apache::londefdef::list_index=0; if ($TeXtype eq 'disc') { $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'. '\renewcommand{\labelitemii}{$\bullet$}'. '\renewcommand{\labelitemiii}{$\bullet$}'. '\renewcommand{\labelitemiv}{$\bullet$}'; } elsif ($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' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'. '\renewcommand{\labelitemii}{$\bullet$}'. '\renewcommand{\labelitemiii}{$\bullet$}'. '\renewcommand{\labelitemiv}{$\bullet$}\strut '; } return $currentstring; } #-- <menu> tag (end tag required) sub start_menu { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $currentstring = " \\begin{itemize} "; } return $currentstring; } sub end_menu { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= " \\begin{itemize} "; } return $currentstring; } sub end_dir { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $Apache::londefdef::list_index=0; my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0); if ($type eq '1') { $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'. '\renewcommand{\labelenumii}{\arabic{enumii}.}'. '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'. '\renewcommand{\labelenumiv}{\arabic{enumiv}.}'; } elsif ($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' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'. '\renewcommand{\labelenumii}{\arabic{enumii}.}'. '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'. '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\begin{description}'; $Apache::londefdef::DL++; push(@Apache::londefdef::description,[]); $Apache::londefdef::DD[$Apache::londefdef::DL]=0; $Apache::londefdef::DT[$Apache::londefdef::DL]=0; $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0; } return $currentstring; } sub end_dl { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { push(@Apache::londefdef::table, {}); $Apache::londefdef::table[-1]{'row_number'} = -1; #maximum table's width (default coincides with text line length) if ($#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. # in the width case we ignore absolute width my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); if (!defined($TeXwidth)) { my $htmlwidth = &Apache::lonxml::get_param('width',$parstack, $safeeval,undef,1); if ($htmlwidth =~ /%/) { $TeXwidth = $htmlwidth; } else { $TeXwidth = $textwidth; } } 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; } # In the end, however the table width cannot be wider than $textwidth... if ($Apache::londefdef::table[-1]{'width'} > $textwidth) { $Apache::londefdef::table[-1]{'width'} = $textwidth; } #table's border my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval); 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'}=[]; $Apache::londefdef::table[-1]{'align'}=[]; if (&is_inside_of($tagstack, 'sup')) { $currentstring .= '}} \\\\ \ensuremath{^{ '; } if (&is_inside_of($tagstack, 'sub')) { $currentstring .= '}} \\\\ \ensuremath{_{ '; } $currentstring.=' \keephidden{NEW TABLE ENTRY}'; } return $currentstring; } sub end_table { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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++) { my $have_rowspan = 0; for (my $jn=0;$jn<=$#fwidth;$jn++) { #----------------------------------------------------------- # I think this order of doing things will ensure that # single rowspan, columspan and combined row/colspans will # work correctly. LaTeX is delicate here. # RF. # Start a rowspan if necessary: my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn]; my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn]; # # Do the appropriate magic if this has a colspan # if ($colspan > 1) { my $spanwidth = 0; for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) { $spanwidth += $fwidth[$spancol]; } $output .= '\multicolumn{'. $colspan ."}"; if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') { $output .= '{|c|}{'; } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') { $output .= '{|r|}{'; } else { $output .= "{|p{$spanwidth mm}|}{"; } } # Rowspan... if colspan is 1, and there's an alignment we'll need # to kick in a multicolumn in order to get the alignment spec. # this must precede the multirow or LaTex gets quite upset. # Naturally if colspan > 1 we've already done that above ^ # my $multirow_aligned = 0; if ($rowspan > 1) { if ($colspan == 1) { if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') { $output .= '\multicolumn{1}{|c|}{'; $multirow_aligned = 1; } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') { $output .= '\multicolumn{1}{|r|}{'; $multirow_aligned = 1; } } $have_rowspan++; $output .= '\multirow{'.$rowspan.'}[0]{*}{'; # # If we did not throw in a multicolumn to align, then add # an extra { # so we close correctly without having to keep additional state # around # if (!$multirow_aligned) { $output .= '{'; } } if (($rowspan eq '^') || ($rowspan eq '_')) { $have_rowspan++; } #-------------------------------------------------------------- # For right and center alignment of single cells. # we are going to use a multicolumn with a span of 1 to specify alignment. # if ($colspan == 1 && $rowspan == 1) { if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') { $output .= '\multicolumn{1}{|c|}{'; } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') { $output .= '\multicolumn{1}{|r|}{'; } } $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn]; if (($colspan == 1 && $rowspan == 1) && (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') || ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) { $output .= '}'; } # Close off any open multirow: if ($rowspan > 1) { $output .= '}}'; } # Close off the colspan... # if ($colspan > 1) { $output .= '}'; $jn += $colspan-1; # Adjust for number of rows really left. } if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};} } # If have_rowspan > 0, and borders are on, then # we need to do more than put an \hline at the bottom of row. # we need to do the appropriate \cline to ensure that # the spanned rows don't have \hlines through them. if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) { $output .= ' \\\\ '; for (my $jn=0; $jn<=$#fwidth;$jn++) { my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn]; if ($rowspan ne "^") { if (($rowspan <= 1) || ($rowspan eq '_')) { my $column = $jn+1; $output .= '\cline{'.$column.'-'.$column.'} '; } } } } else { $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' '; } } # Note that \newline destroys alignment env's produced by e.g. <div> # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut '; $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut '; if ($#Apache::londefdef::table > 0) { my $inmemory = $Apache::londefdef::table[-1]{'output'}; # Figure out max/and min width by summing us and then # apply that to the current column of the table we nest in # if it's larger than the current width or the current width # is undefined. # my $min_nested_width = 0; my $max_nested_width = 0; for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) { $min_nested_width += $min_len[$col]; $max_nested_width += $max_len[$col]; } # Fudge in an extra 5 mm for borders etc: $min_nested_width += 5; $max_nested_width += 5; my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'}; my $outer_row = $Apache::londefdef::table[-2]{'row_number'}; if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) { $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width; } if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) { $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width; } pop @Apache::londefdef::table; push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory; } else { $currentstring .= $Apache::londefdef::table[-1]{'output'}; pop @Apache::londefdef::table; undef @Apache::londefdef::table; } } return $currentstring; } #-- <tr> tag (end tag optional) sub start_tr { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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 $current_column = $Apache::londefdef::table[-1]{'counter_columns'}; my $data = &Apache::lonxml::endredirection(); # The rowspan array of the table indicates which cells are part of a span. # n indicates the start of a span set of n rows. # ^ indicates a cell that continues a span set. # _ indicates the cell is at the bottom of a span set. # If this and subsequent cells are part of a rowspan, we must # push along the row until we find one that is not. while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column]) && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) { # Part of a span. push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, ''; $current_column++; } $Apache::londefdef::table[-1]{'counter_columns'} = $current_column; # Get the column and row spans. # Colspan can be done via \multicolumn if I can figure out the data structs. my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0); if (!$colspan) { $colspan = 1; } my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0); if (!$rowspan) { $rowspan = 1; } for (my $c = 0; $c < $colspan; $c++) { $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan; for (my $i = 1; $i < $rowspan; $i++) { $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^'; if ($i == ($rowspan-1)) { $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_'; } } } my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0); if (defined $TeXwidth) { push @ {$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; } } # Substitute all of the tables nested in this cell in their appropriate places. my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant... for (my $in=0; $in<=$nested_count; $in++) { my $nested = shift @{$Apache::londefdef::table[-1]{'include'}}; $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/; # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/; $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/; } # Should be be killing off the 'include' elements as they're used up? push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data; # the colspan array will indicate how many columns will be spanned by this # cell..this requires that counter_columns also be adjusted accordingly # so that the next bunch of text goes in the right cell. Note that since # counter_columns is incremented in the start_td_tex, we adjust by colspan-1. # $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1; for (my $i = 0; $i < ($colspan -1); $i++) { push @ {$Apache::londefdef::table[-1]{'content'}[-1] },''; } for (my $r = 0; $r < $rowspan; $r++) { $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan; # Put empty text in spanned cols. } return ''; } sub end_td { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $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 (! $src && ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex') ) { my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style); return ''; } &Apache::lonxml::extlink($src); my $currentstring = ''; my $scaling = .3; # Render unto browsers that which are the browser's... if ($target eq 'web' || $target eq 'webgrade') { if ($env{'browser.imagesuppress'} ne 'on') { my $enc = ('yes' eq lc(&Apache::lonxml::get_param('encrypturl',$parstack, $safeeval))); $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src}, $enc); } else { my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval, undef,1); if (!$alttag) { $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1], $src); } $currentstring.='[IMAGE: '.$alttag.']'; } # and render unto TeX that which is LaTeX } elsif ($target eq 'tex') { # # The alignment will require some superstructure to be put around # the \includegraphics stuff. At present we can only partially # simulate the alignments offered by html. # # my $align = lc(&Apache::lonxml::get_param('align', $parstack, $safeeval, undef,1)); if(!$align) { $align = "bottom"; # This is html's default so it's ours too. } # &Apache::lonxml::debug("Alignemnt = $align"); # LaTeX's image/text wrapping is really bad since it wants to # make figures float. # The user has the optional parameter (applicable only to l/r # alignment to use the picins/parpic directive to get wrapped text # this is also imperfect.. that's why we give them a choice... # so they can't yell at us for our choice. # my $latex_rendering = &Apache::lonxml::get_param('TeXwrap', $parstack, $safeeval, undef,0); # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering"); if(!$latex_rendering) { $latex_rendering = "texwrap"; } # using texwrap inside a table does not work. So, if after all of this, # texwrap is on, we turn it off if we detect we're in a table: # if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) { $latex_rendering = 'parpic'; } # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src"); #if original gif/jpg/png file exist do following: my $origsrc=$src; my ($path,$file) = &get_eps_image($src); # &Apache::lonnet::logthis("Image source: $src result: $path $file"); $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src); &Apache::lonxml::debug("path = $path file = $file src = $src"); if (-e $src) { &Apache::lonxml::debug("$src exists"); my ($height_param,$width_param)= &image_size($origsrc,0.3,$parstack,$safeeval); my $size; if ($width_param) { $size.='width='.$width_param.' mm,'; } if ($height_param) { $size.='height='.$height_param.' mm]'; } # Default size if not able to extract that (e.g. eps image). # &Apache::lonnet::logthis("Size = $size"); $size='['.$size; $size=~s/,$/]/; $currentstring .= '\graphicspath{{'.$path.'}}' .'\includegraphics'.$size.'{'.$file.'} '; # 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::select_arg('Encrypt URL:','encrypturl', ['no','yes'], $token, 2); $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row(); my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval); my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval); my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval); my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval); $currentstring .= '<img src="'.$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, $safeeval,'src','alt','align', 'TeXwidth','TeXheight', 'TeXwrap', 'width','height','encrypturl'); my ($nsrc,$nwidth,$nheight)= ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'}); my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc); &image_replication($loc); my ($iwidth,$iheight); if (-e $loc) { my $image = Image::Magick->new; $image->Read($loc); ($iwidth, $iheight) = ($image->Get('width'), $image->Get('height')); } if ($osrc ne $nsrc || (!$nwidth && !$nheight)) { # changed image or no size specified, # if they didn't explicitly change the # width or height use the ones from the image if ($iwidth && $iheight) { if ($owidth == $nwidth || (!$nwidth && !$nheight)) { $token->[2]{'width'} = $iwidth;$ctag=1; } if ($oheight == $nheight || (!$nwidth && !$nheight)) { $token->[2]{'height'}=$iheight;$ctag=1; } } } my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'}); # if we don't have a width or height if ($iwidth && $cwidth && !$cheight) { $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1; } if ($iheight && $cheight && !$cwidth) { $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1; } if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);} } return $currentstring; } sub end_img { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { if ($env{'browser.appletsuppress'} ne 'on') { $currentstring = &Apache::lonenc::encrypt_ref($token, {'code'=>$code, 'archive'=>$archive} ); } else { my $alttag= &Apache::lonxml::get_param('alt',$parstack, $safeeval,undef,1); unless ($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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { if ($env{'browser.embedsuppress'} ne 'on') { $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src}); } else { my $alttag=&Apache::lonxml::get_param ('alt',$parstack,$safeeval,undef,1); unless ($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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { my %toconvert; my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1); if ($src) { $toconvert{'src'}= $src; } my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval, undef,1); if ($name=~/^cabbase$/i) { $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack, $safeeval,undef,1); } $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert); } elsif ($target eq 'tex') { } return $currentstring; } sub end_param { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring = &Apache::loncommon::start_page($Apache::londefdef::title, $Apache::londefdef::head, {'add_entries' => $token->[2], 'no_title' => 1, 'force_register' => 1, 'frameset' => 1,}); } return $currentstring; } sub end_frameset { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\begin{verbatim}'; } return $currentstring; } sub end_xmp { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } elsif ($target eq 'tex') { $currentstring .= '\begin{verbatim}'; &Apache::lonxml::disable_LaTeX_substitutions(); } return $currentstring; } sub end_pre { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring .= $token->[2]; } elsif ($target eq 'tex') { $currentstring .= '\end{verbatim}'; &Apache::lonxml::enable_LaTeX_substitutions(); } return $currentstring; } #-- <insert> sub start_insert { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { 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' || $target eq 'webgrade') { $currentstring .= ''; } return $currentstring; } #-- <externallink> sub start_externallink { my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { 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' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_abbr { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <acronym> tag (end tag required) sub start_acronym { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_acronym { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <area> tag (end tag forbidden) sub start_area { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_area { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <base> tag (end tag forbidden) sub start_base { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_base { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <bdo> tag (end tag required) sub start_bdo { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_bdo { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <bgsound> tag (end tag optional) sub start_bgsound { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_bgsound { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <blink> tag (end tag required) sub start_blink { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_blink { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } if ($target eq 'tex') { $currentstring .= '\begin{quote}'; } return $currentstring; } sub end_blockquote { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } if ($target eq 'tex') { $currentstring = '\end{quote}'; } return $currentstring; } #-- <button> tag (end tag required) sub start_button { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_button { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <caption> tag (end tag required) sub start_caption { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_caption { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <col> tag (end tag forbdden) sub start_col { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_col { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <colgroup> tag (end tag optional) sub start_colgroup { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_colgroup { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <del> tag (end tag required) sub start_del { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_del { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <fieldset> tag (end tag required) sub start_fieldset { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_fieldset { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <frame> tag (end tag forbidden) sub start_frame { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_frame { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <iframe> tag (end tag required) sub start_iframe { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_iframe { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <ins> tag (end tag required) sub start_ins { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_ins { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <isindex> tag (end tag forbidden) sub start_isindex { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_isindex { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <keygen> tag (end tag forbidden) sub start_keygen { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_keygen { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <label> tag sub start_label { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_label { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <layer> tag (end tag required) sub start_layer { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_layer { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <legend> tag (end tag required) sub start_legend { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_legend { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { 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' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <marquee> tag (end tag optional) sub start_marquee { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_marquee { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } return $currentstring; } sub end_multicol { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <nobr> tag (end tag required) sub start_nobr { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $currentstring='\mbox{'; } return $currentstring; } sub end_nobr { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_noembed { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <noframes> tag (end tag required) sub start_noframes { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_noframes { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <nolayer> tag (end tag required) sub start_nolayer { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_nolayer { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <noscript> tag (end tag required) sub start_noscript { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_noscript { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <object> tag (end tag required) sub start_object { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_object { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <optgroup> tag (end tag required) sub start_optgroup { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_optgroup { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <samp> tag (end tag required) sub start_samp { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $currentstring='\texttt{'; } return $currentstring; } sub end_samp { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } elsif ($target eq 'tex') { $currentstring='}'; } return $currentstring; } #-- <server> tag sub start_server { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_server { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring .= $token->[4]; } return $currentstring; } sub end_spacer { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <span> tag (end tag required) sub start_span { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_span { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <tbody> tag (end tag optional) sub start_tbody { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_tbody { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <tfoot> tag (end tag optional) sub start_tfoot { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_tfoot { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <thead> tag (end tag optional) sub start_thead { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_thead { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <var> tag sub start_var { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[4]; } elsif ($target eq 'tex') { $currentstring = '\textit{'; } return $currentstring; } sub end_var { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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' || $target eq 'webgrade') { $currentstring = $token->[4]; } return $currentstring; } sub end_wbr { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $currentstring = $token->[2]; } return $currentstring; } #-- <hideweboutput> tag sub start_hideweboutput { my ($target,$token) = @_; if ($target eq 'web' || $target eq 'webgrade') { &Apache::lonxml::startredirection(); } return ''; } sub end_hideweboutput { my ($target,$token) = @_; my $currentstring = ''; if ($target eq 'web' || $target eq 'webgrade') { $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/; } } } } else { # If the postscript file has spaces in its name, # LaTeX will gratuitiously vomit. Therefore # queue such files for copy with " " replaced by "_". # printout.pm will know them by their .ps or .eps extensions. my $newsrc = $orig_src; $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|; open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat"); print FILE "$src\n"; close FILE; $src=~s|/home/httpd/html/res|/home/httpd/prtspool|; $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|; } my ($path,$file)=($src=~m|(.*)/([^/]*)$|); $path =~ s/ /\_/g; $file =~ s/ /\_/g; &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />"); return ($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}{}; $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/}; $newsrc=~s{/\./}{/}; $newsrc=~s{/([^/]+)\.(ps|eps)}{/}; if ($newsrc=~m{/home/httpd/lonUsers/}) { $newsrc=~s{/home/httpd/lonUsers}{}; $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/}; } if ($newsrc=~m{/userfiles/}) { return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; } else { return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} '; } } 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__