File:
[LON-CAPA] /
loncom /
xml /
londefdef.pm
Revision
1.277:
download - view:
text,
annotated -
select for diffs
Thu Jul 7 10:09:50 2005 UTC (19 years, 1 month ago) by
foxr
Branches:
MAIN
CVS tags:
HEAD
Bug 3948 - Re-do how <p> ends... force </p> at several begin tags that
do new para like things. This prevents the crashes described in this bug
both for the case described and for other similar cases. Note that
# The LearningOnline Network with CAPA
# Tags Default Definition Module
#
# $Id: londefdef.pm,v 1.277 2005/07/07 10:09:50 foxr Exp $
#
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
# TtHfunc and TtMfunc (the "Code") may be compiled and linked into
# binary executable programs or libraries distributed by the
# Michigan State University (the "Licensee"), but any binaries so
# distributed are hereby licensed only for use in the context
# of a program or computational system for which the Licensee is the
# primary author or distributor, and which performs substantial
# additional tasks beyond the translation of (La)TeX into HTML.
# The C source of the Code may not be distributed by the Licensee
# to any other parties under any circumstances.
#
package Apache::londefdef;
use Apache::lonnet;
use strict;
use Apache::lonxml;
use Apache::File();
use Image::Magick;
use Apache::lonmenu();
use Apache::lonmeta();
use Apache::Constants qw(:common);
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'));
}
sub initialize_londefdef {
$Apache::londefdef::TD_redirection=0;
@Apache::londefdef::table = ();
$Apache::londefdef::select=0;
undef(@Apache::londefdef::description);
@Apache::londefdef::DD=(0);
@Apache::londefdef::DT=(0);
@Apache::londefdef::seenDT=(0);
$Apache::londefdef::list_index=0;
}
#======================= TAG SUBROUTINES =====================
#-- <output>
sub start_output {
my ($target) = @_;
if ($target eq 'meta') { $Apache::lonxml::metamode--; }
return '';
}
sub end_output {
my ($target) = @_;
if ($target eq 'meta') { $Apache::lonxml::metamode++; }
return '';
}
#-- <m> tag
sub start_m {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
my $currentstring = '';
my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
if ($target eq 'web' || $target eq 'analyze') {
&Apache::lonxml::debug("M is starting with:$inside:");
my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
if ($eval eq 'on') {
$inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
#&Apache::lonxml::debug("M is evaulated to:$inside:");
}
my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
$currentstring = &Apache::lontexconvert::converted(\$inside,$display);
if ($Apache::lontexconvert::errorstring) {
&Apache::lonxml::warning("tth error: ".
$Apache::lontexconvert::errorstring);
$Apache::lontexconvert::errorstring='';
}
#&Apache::lonxml::debug("M is ends with:$currentstring:");
$Apache::lonxml::post_evaluate=0;
} elsif ($target eq 'tex') {
$currentstring = $inside;
my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
if ($eval eq 'on') {
$currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
}
if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
# detect simple math mode entry exits, and convert them
# to use \ensuremath
if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
$currentstring=~s/^\$//;
$currentstring=~s/\$$//;
$currentstring='\ensuremath{'.$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) = @_;
my $result;
if ($target eq 'web') {
my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
$inside=~s/^\s*//;
if ($env{'browser.mathml'}) {
&tth::ttmoptions($inside);
} else {
&tth::tthoptions($inside);
}
}
return $result;
}
sub end_tthoption {
my ($target,$token) = @_;
my $result;
return $result;
}
#-- <html> tag (end tag optional)
sub start_html {
my ($target,$token) = @_;
my $currentstring = '';
my $options=$env{'course.'.$env{'request.course.id'}.'.tthoptions'};
&Apache::lontexconvert::init_tth();
if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
$currentstring = &Apache::lonxml::xmlbegin();
} elsif ($target eq 'tex') {
$currentstring .= '\documentclass[letterpaper]{article}';
if (($env{'form.latex_type'}=~'batchmode') ||
(!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
$currentstring .= '\newcommand{\keephidden}[1]{}'.
'\renewcommand{\deg}{$^{\circ}$}'.
'\usepackage{longtable}'.
'\usepackage{textcomp}'.
'\usepackage{makeidx}'.
'\usepackage[dvips]{graphicx}'.
'\usepackage{picins}'.
'\usepackage{epsfig}'.
'\usepackage{calc}'.
'\usepackage{amsmath}'.
'\usepackage{amssymb}'.
'\usepackage{amsfonts}'.
'\usepackage{amsthm}'.
'\usepackage{amscd}'.
'\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
'\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
}
return $currentstring;
}
sub end_html {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = '</html>';
}
return $currentstring;
}
#-- <head> tag (end tag optional)
sub start_head {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4].&Apache::lonxml::fontsettings();
}
return $currentstring;
}
sub end_head {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web' && $env{'request.state'} eq 'published') {
$currentstring = &Apache::lonmenu::registerurl(undef,$target).
$token->[2];
}
return $currentstring;
}
#-- <map> tag (end tag required)
sub start_map {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_map {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <select> tag (end tag required)
sub start_select {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$Apache::londefdef::select=0;
}
return $currentstring;
}
sub end_select {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <option> tag (end tag optional)
sub start_option {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$Apache::londefdef::select++;
if ($Apache::londefdef::select == 1) {
$currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
} else {
$currentstring='\keephidden{';
}
}
return $currentstring;
}
sub end_option {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring='}';
}
return $currentstring;
}
#-- <input> tag (end tag forbidden)
sub start_input {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_input {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <textarea> tag (end tag required)
sub start_textarea {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_textarea {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <form> tag (end tag required)
sub start_form {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_form {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <title> tag (end tag required)
sub start_title {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\keephidden{Title of the document: '
}
if ($target eq 'meta') {
$currentstring='<title>';
&start_output($target);
}
return $currentstring;
}
sub end_title {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
if ($target eq 'meta') {
&end_output($target);
$currentstring='</title>';
}
return $currentstring;
}
#-- <meta> tag (end tag forbidden)
sub start_meta {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
my $args='';
if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
if ($args eq '') {
&Apache::lonxml::get_all_text("/meta",$parser);
} else {
$currentstring = $token->[4];
}
} elsif ($target eq 'meta') {
unless (&Apache::lonxml::get_param
('http-equiv',$parstack,$safeeval,undef,1)) {
my $name=$token->[2]->{'name'};
$name=~tr/A-Z/a-z/;
$name=~s/\s/\_/gs;
$name=~s/\W//gs;
if ($name) {
$currentstring='<'.$name;
my $display=&Apache::lonxml::get_param
('display',$parstack,$safeeval,undef,1);
if ($display) {
$display=~s/\"/\'/g;
$currentstring.=' display="'.$display.'"';
}
$currentstring.='>'.
&Apache::lonxml::get_param
('content',$parstack,$safeeval,undef,1).
'</'.$name.'>';
}
my $display=&Apache::lonxml::get_param
('display',$parstack,$safeeval,undef,1);
if ($display) {
$display=&HTML::Entities::encode($display,'<>&"');
$currentstring.='<'.$name.'.display>'.$display.
'</'.$name.'.display>';
}
}
} elsif ($target eq 'tex') {
my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
if ((not defined $content) && (not defined $name)) {
&Apache::lonxml::startredirection();
}
}
return $currentstring;
}
sub end_meta {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
my $args='';
if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
if ($args ne '') {
$currentstring = $token->[4];
}
} elsif ($target eq 'tex') {
my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
if ((not defined $content) && (not defined $name)) {
&Apache::lonxml::endredirection();
}
}
return $currentstring;
}
# accessrule
sub start_accessrule {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
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=$$parstack[$#$parstack]; }
if ($args eq '') {
&Apache::lonxml::get_all_text("/accessrule",$parser);
} else {
$currentstring = $token->[4];
}
}
if ($target eq 'meta') {
$currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
}
return $currentstring;
}
sub end_accessrule {
my ($target,$token,$tagstack,$parstack,$parser) = @_;
my $currentstring = '';
if ($target eq 'web') {
my $args='';
if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
if ($args ne '') {
$currentstring = $token->[4];
}
}
return $currentstring;
}
#-- <body> tag (end tag required)
sub start_body {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
if ($Apache::lonhomework::parsing_a_problem) {
&Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
return '';
}
if (!$Apache::lonxml::registered &&
$env{'request.state'} eq 'published') {
$currentstring.='<head>'.
&Apache::lonmenu::registerurl(undef,$target).'</head>';
}
# Accessibility
if ($env{'browser.imagesuppress'} eq 'on') {
delete($token->[2]->{'background'});
}
if ($env{'browser.fontenhance'} eq 'on') {
my $style='';
foreach my $key (keys(%{$token->[2]})) {
if ($key =~ /^style$/i) {
$style.=$token->[2]->{$key}.';';
delete($token->[2]->{$key});
}
}
$token->[2]->{'style'}=$style.'; font-size: x-large;';
}
if ($env{'browser.blackwhite'} eq 'on') {
delete($token->[2]->{'font'});
delete($token->[2]->{'link'});
delete($token->[2]->{'alink'});
delete($token->[2]->{'vlink'});
delete($token->[2]->{'bgcolor'});
delete($token->[2]->{'background'});
}
# Overload loads
my $onLoad='';
foreach my $key (keys(%{$token->[2]})) {
if ($key =~ /^onload$/i) {
$onLoad.=$token->[2]->{$key}.';';
delete($token->[2]->{$key});
}
}
$token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
my $onUnload='';
foreach my $key (keys(%{$token->[2]})) {
if ($key =~ /^onunload$/i) {
$onUnload.=$token->[2]->{$key}.';';
delete($token->[2]->{$key});
}
}
$token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
';'.$onUnload;
if ($env{'request.state'} ne 'construct') {
$currentstring .= '<'.$token->[1];
}
foreach (keys %{$token->[2]}) {
$currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
}
if ($env{'request.state'} ne 'construct') {
$currentstring.='>';
}
if ($env{'request.state'} ne 'published') {
my $remote=($env{'environment.remote'} ne 'off');
$currentstring=&Apache::loncommon::bodytag(undef,undef,
$currentstring,$remote);
$currentstring.=(<<EDITBUTTON);
<form method="post">
<input type="submit" name="editmode" accesskey="e" value="Edit" />
</form>
EDITBUTTON
} else {
$currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
}
$currentstring.=&Apache::lonxml::message_location();
} elsif ($target eq 'tex') {
$currentstring = '\begin{document}';
}
return $currentstring;
}
sub end_body {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # Close off unclosed <p>
if ($target eq 'web') {
$currentstring .= &Apache::lonxml::xmlend($target,$parser);
} elsif ($target eq 'tex') {
$currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
}
return $currentstring;
}
#-- <center> tag (end tag required)
sub start_center {
my ($target,$token) = @_;
my $currentstring = &end_p; # Close off any prior para.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\begin{center}';
}
return $currentstring;
}
sub end_center {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring = '\end{center}';
}
return $currentstring;
}
#-- <b> tag (end tag required)
sub start_b {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$currentstring = '\textbf{';
}
return $currentstring;
}
sub end_b {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring = '}';
}
return $currentstring;
}
#-- <strong> tag (end tag required)
sub start_strong {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$currentstring = '\textbf{';
}
return $currentstring;
}
sub end_strong {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring = '}';
}
return $currentstring;
}
#-- <h1> tag (end tag required)
sub start_h1 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # Close off any prior para.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
my $pre;
my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
if ($align eq 'center') {
$pre='\begin{center}';
} elsif ($align eq 'left') {
$pre='\rlap{';
} elsif ($align eq 'right') {
$pre=' \hfill \llap{';
}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
} elsif ($target eq 'meta') {
$currentstring.='<subject>';
&start_output($target);
}
return $currentstring;
}
sub end_h1 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$post='\end{center}';
} elsif ($align eq 'left') {
$post='} \hfill'.'\vskip 0 mm ';
} elsif ($align eq 'right') {
$post='}'.'\vskip 0 mm ';
}
$currentstring .= '}}'.$post;
} elsif ($target eq 'meta') {
&end_output($target);
$currentstring='</subject>';
}
return $currentstring;
}
#-- <h2> tag
sub start_h2 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # Close off any prior para.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
my $pre;
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$pre='\begin{center}';
} elsif ($align eq 'left') {
$pre='\rlap{';
} elsif ($align eq 'right') {
$pre=' \hfill \llap{';
}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}
return $currentstring;
}
sub end_h2 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$post='\end{center}';
} elsif ($align eq 'left') {
$post='} \hfill'.'\vskip 0 mm ';
} elsif ($align eq 'right') {
$post='}'.'\vskip 0 mm ';
}
$currentstring .= '}}'.$post;
}
return $currentstring;
}
#-- <h3> tag
sub start_h3 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # Close off any prior para.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
my $pre;
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$pre='\begin{center}';
} elsif ($align eq 'left') {
$pre='\rlap{';
} elsif ($align eq 'right') {
$pre=' \hfill \llap{';
}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}
return $currentstring;
}
sub end_h3 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$post='\end{center}';
} elsif ($align eq 'left') {
$post='} \hfill'.'\vskip 0 mm ';
} elsif ($align eq 'right') {
$post='}'.'\vskip 0 mm ';
}
$currentstring .= '}}'.$post;
}
return $currentstring;
}
#-- <h4> tag
sub start_h4 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # Close off any prior para.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
my $pre;
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$pre='\begin{center}';
} elsif ($align eq 'left') {
$pre='\rlap{';
} elsif ($align eq 'right') {
$pre=' \hfill \llap{';
}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}
return $currentstring;
}
sub end_h4 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$post='\end{center}';
} elsif ($align eq 'left') {
$post='} \hfill'.'\vskip 0 mm ';
} elsif ($align eq 'right') {
$post='}'.'\vskip 0 mm ';
}
$currentstring .= '}}'.$post;
}
return $currentstring;
}
#-- <h5> tag
sub start_h5 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # Close off any prior paras.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
my $pre;
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$pre='\begin{center}';
} elsif ($align eq 'left') {
$pre='\rlap{';
} elsif ($align eq 'right') {
$pre=' \hfill \llap{';
}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}
return $currentstring;
}
sub end_h5 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$post='\end{center}';
} elsif ($align eq 'left') {
$post='} \hfill'.'\vskip 0 mm ';
} elsif ($align eq 'right') {
$post='}'.'\vskip 0 mm ';
}
$currentstring .= '}}'.$post;
}
return $currentstring;
}
#-- <h6> tag
sub start_h6 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # Close off any prior paras.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
my $pre;
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$pre='\begin{center}';
} elsif ($align eq 'left') {
$pre='\rlap{';
} elsif ($align eq 'right') {
$pre=' \hfill \llap{';
}
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
if (not defined $TeXsize) {$TeXsize="large";}
$currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
}
return $currentstring;
}
sub end_h6 {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
my $post='\vskip 0 mm ';
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$post='\end{center}';
} elsif ($align eq 'left') {
$post='} \hfill'.'\vskip 0 mm ';
} elsif ($align eq 'right') {
$post='}'.'\vskip 0 mm ';
}
$currentstring .= '}}'.$post;
}
return $currentstring;
}
#--- <cite> tag (end tag required)
sub start_cite {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\textit{';
}
return $currentstring;
}
sub end_cite {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
return $currentstring;
}
#-- <i> tag (end tag required)
sub start_i {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\textit{';
}
return $currentstring;
}
sub end_i {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
return $currentstring;
}
#-- <address> tag (end tag required)
sub start_address {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\textit{';
}
return $currentstring;
}
sub end_address {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
return $currentstring;
}
#-- <dfn> tag (end tag required)
sub start_dfn {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\textit{';
}
return $currentstring;
}
sub end_dfn {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
return $currentstring;
}
#-- <tt> tag (end tag required)
sub start_tt {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\texttt{';
}
return $currentstring;
}
sub end_tt {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
return $currentstring;
}
#-- <kbd> tag (end tag required)
sub start_kbd {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\texttt{';
}
return $currentstring;
}
sub end_kbd {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
return $currentstring;
}
#-- <code> tag (end tag required)
sub start_code {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\texttt{';
}
return $currentstring;
}
sub end_code {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
return $currentstring;
}
#-- <em> tag (end tag required)
sub start_em {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\emph{';
}
return $currentstring;
}
sub end_em {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
return $currentstring;
}
#-- <q> tag (end tag required)
sub start_q {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\emph{';
}
return $currentstring;
}
sub end_q {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
return $currentstring;
}
# <p> is a bit strange since it does not require a closing </p>
# However in latex, we must often output closing stuff to end
# environments and {}'s etc. Therefore we do all the work
# of figuring out the ending strings in the start tag processing,
# and provide a mechanism to output the stop text external
# to tag processing.
#
{
my $closing_string = ''; # String required to close <p>
#-- <p> tag (end tag optional)
#optional attribute - align="center|left|right"
sub start_p {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # close off prior para if in progress.
if ($target eq 'web') {
$currentstring .= $token->[4];
$closing_string = '</p>'; # Not sure this is correct.
} elsif ($target eq 'tex') {
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($align eq 'center') {
$currentstring .='\begin{center}\par';
$closing_string = '\end{center}';
} elsif ($align eq 'right') {
$currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
$closing_string= '}}';
} elsif ($align eq 'left') {
$currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{\rlap{';
$closing_string = '}\hfill}';
} else {
$currentstring.='\par ';
$closing_string = '\strut\\\\\strut';
}
my $signal=1;#<p> does not work inside <b>...</b>
foreach my $tag (@$tagstack) {
if (lc($tag) eq 'b') {
$signal=0;
}
}
if (!$signal) {
$currentstring = &end_p; # Just close the prior? Not sure this is correct
$closing_string = ''; # Probably correct?
}
}
return $currentstring;
}
#
# End paragraph processing just requires that we output the
# closing string that was saved and blank it.
sub end_p {
my $current_string = $closing_string;
$closing_string = ''; # Not in a para anymore.
return $current_string;
}
}
#-- <br> tag (end tag forbidden)
sub start_br {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
my @tempo=@$tagstack;
my $signal=0;
for (my $i=$#tempo;$i>=0;$i--) {
if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
$signal=1;
last;
}
}
if ($signal) {
$currentstring .= ' \vskip 0 mm ';
} elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
$currentstring .= '\strut \\\\ \strut ';
}
}
return $currentstring;
}
sub end_br {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
}
return $currentstring;
}
#-- <big> tag (end tag required)
sub start_big {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '{\large ';
}
return $currentstring;
}
sub end_big {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
return $currentstring;
}
#-- <small> tag (end tag required)
sub start_small {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '{\footnotesize ';
}
return $currentstring;
}
sub end_small {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}';
}
return $currentstring;
}
#-- <basefont> tag (end tag forbidden)
sub start_basefont {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
if (defined $basesize) {
$currentstring = '{\\'.$basesize.' ';
}
}
return $currentstring;
}
sub end_basefont {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
if (defined $basesize) {
$currentstring = '}';
}
}
return $currentstring;
}
#-- <font> tag (end tag required)
sub start_font {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $currentstring = '';
if ($target eq 'web') {
my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
if ($face!~/symbol/i) {
if (($env{'browser.fontenhance'} eq 'on') ||
($env{'browser.blackwhite'} eq 'on')) { return ''; }
}
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
if (defined $fontsize) {
$currentstring = '{\\'.$fontsize.' ';
}
}
return $currentstring;
}
sub end_font {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
if (defined $fontsize) {
$currentstring = '}';
}
}
return $currentstring;
}
#-- <strike> tag (end tag required)
sub start_strike {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
&Apache::lonxml::startredirection();
}
return $currentstring;
}
sub end_strike {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring=&Apache::lonxml::endredirection();
$currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
$currentstring=~s/^\s*(\S)/\\underline\{$1/;
$currentstring=~s/(\S)\s*$/$1\}/;
}
return $currentstring;
}
#-- <s> tag (end tag required)
sub start_s {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
&Apache::lonxml::startredirection();
}
return $currentstring;
}
sub end_s {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring=&Apache::lonxml::endredirection();
$currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
$currentstring=~s/^\s*(\S)/\\underline\{$1/;
$currentstring=~s/(\S)\s*$/$1\}/;
}
return $currentstring;
}
#-- <sub> tag (end tag required)
sub start_sub {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\ensuremath{_{';
}
return $currentstring;
}
sub end_sub {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}}';
}
return $currentstring;
}
#-- <sup> tag (end tag required)
sub start_sup {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\ensuremath{^{';
}
return $currentstring;
}
sub end_sup {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '}}';
}
return $currentstring;
}
#-- <hr> tag (end tag forbidden)
sub start_hr {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # End enclosing para.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
if (defined $LaTeXwidth) {
if ($LaTeXwidth=~/^%/) {
substr($LaTeXwidth,0,1)='';
$LaTeXwidth=($LaTeXwidth/100).'\textwidth';
}
} else {
$LaTeXwidth ='0.9\textwidth';
}
my ($pre,$post);
my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if (($align eq 'center') || (not defined $align)) {
$pre=''; $post='';
} elsif ($align eq 'left') {
$pre='\rlap{'; $post='} \hfill';
} elsif ($align eq 'right') {
$pre=' \hfill \llap{'; $post='}';
}
$currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
$LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
}
return $currentstring;
}
sub end_hr {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
}
return $currentstring;
}
#-- <div> tag (end tag required)
sub start_div {
my ($target,$token) = @_;
my $currentstring = &end_p; # Close enclosing para.
if ($target eq 'web') {
$currentstring .= $token->[4];
}
return $currentstring;
}
sub end_div {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
}
return $currentstring;
}
#-- <a> tag (end tag required)
sub start_a {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
undef,1);
$currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
} elsif ($target eq 'tex') {
my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
if ($a=~/\S/) {
$a=~s/([^\\])%/$1\\\%/g;
$currentstring .= '\ref{URI: '.$a.'}';
} elsif ($b=~/\S/) {
$currentstring .= '\ref{Anchor: '.$b.'}';
} else {
$currentstring.='';
}
}
return $currentstring;
}
sub end_a {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
}
return $currentstring;
}
#-- <li> tag (end tag optional)
sub start_li {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
#FIXME need to support types i and I
if ($type=~/disc/) {
$currentstring .= ' \item[$\bullet$] ';
} elsif ($type=~/circle/) {
$currentstring .= ' \item[$\circ$] ';
} elsif ($type=~/square/) {
$currentstring .= ' \item[$\diamond$] ';
} elsif ($type eq '1') {
$currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
} elsif ($type eq 'A') {
$currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
} elsif ($type eq 'a') {
$currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
} elsif ($value ne '') {
$currentstring .= ' \item['.$value.'] ';
} else {
$currentstring .= ' \item ';
}
$Apache::londefdef::list_index++;
}
return $currentstring;
}
sub end_li {
my ($target,$token) = @_;
my $currentstring = &end_p; # In case there's a <p> in the <li>
if ($target eq 'web') {
$currentstring .= $token->[2];
}
return $currentstring;
}
#-- <u> tag (end tag required)
sub start_u {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
&Apache::lonxml::startredirection();
}
return $currentstring;
}
sub end_u {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring=&Apache::lonxml::endredirection();
$currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
$currentstring=~s/^\s*(\S)/\\underline\{$1/;
$currentstring=~s/(\S)\s*$/$1\}/;
}
return $currentstring;
}
#-- <ul> tag (end tag required)
sub start_ul {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # Close off enclosing list.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
$Apache::londefdef::list_index=0;
if ($TeXtype eq 'disc') {
$currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
'\renewcommand{\labelitemii}{$\bullet$}'.
'\renewcommand{\labelitemiii}{$\bullet$}'.
'\renewcommand{\labelitemiv}{$\bullet$}';
} elsif ($TeXtype eq 'circle') {
$currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
'\renewcommand{\labelitemii}{$\circ$}'.
'\renewcommand{\labelitemiii}{$\circ$}'.
'\renewcommand{\labelitemiv}{$\circ$}';
} elsif ($TeXtype eq 'square') {
$currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
'\renewcommand{\labelitemii}{$\diamond$}'.
'\renewcommand{\labelitemiii}{$\diamond$}'.
'\renewcommand{\labelitemiv}{$\diamond$}';
}
$currentstring .= '\strut \begin{itemize}';
}
return $currentstring;
}
sub end_ul {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
'\renewcommand{\labelitemii}{$\bullet$}'.
'\renewcommand{\labelitemiii}{$\bullet$}'.
'\renewcommand{\labelitemiv}{$\bullet$}\strut ';
}
return $currentstring;
}
#-- <menu> tag (end tag required)
sub start_menu {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$currentstring = " \\begin{itemize} ";
}
return $currentstring;
}
sub end_menu {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring = " \\end{itemize}";
}
return $currentstring;
}
#-- <dir> tag (end tag required)
sub start_dir {
my ($target,$token) = @_;
my $currentstring = &end_p; # In case there's a <p> prior to the list.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= " \\begin{itemize} ";
}
return $currentstring;
}
sub end_dir {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring = " \\end{itemize}";
}
return $currentstring;
}
#-- <ol> tag (end tag required)
sub start_ol {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # In case there's a <p> prior to the list.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$Apache::londefdef::list_index=0;
my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
if ($type eq '1') {
$currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
'\renewcommand{\labelenumii}{\arabic{enumii}.}'.
'\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
'\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
} elsif ($type eq 'A') {
$currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
'\renewcommand{\labelenumii}{\Alph{enumii}.}'.
'\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
'\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
} elsif ($type eq 'a') {
$currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
'\renewcommand{\labelenumii}{\alph{enumii}.}'.
'\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
'\renewcommand{\labelenumiv}{\alph{enumiv}.}';
} elsif ($type eq 'i') {
$currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
'\renewcommand{\labelenumii}{\roman{enumii}.}'.
'\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
'\renewcommand{\labelenumiv}{\roman{enumiv}.}';
} elsif ($type eq 'I') {
$currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
'\renewcommand{\labelenumii}{\Roman{enumii}.}'.
'\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
'\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
}
$currentstring .= '\strut \begin{enumerate}';
}
return $currentstring;
}
sub end_ol {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
'\renewcommand{\labelenumii}{\arabic{enumii}.}'.
'\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
'\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
}
return $currentstring;
}
#-- <dl> tag (end tag required)
sub start_dl {
my ($target,$token) = @_;
my $currentstring = &end_p; # In case there's a <p> unclosed prior to the list.
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\begin{description}';
$Apache::londefdef::DL++;
push(@Apache::londefdef::description,[]);
$Apache::londefdef::DD[$Apache::londefdef::DL]=0;
$Apache::londefdef::DT[$Apache::londefdef::DL]=0;
$Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
}
return $currentstring;
}
sub end_dl {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
foreach my $element (@{$Apache::londefdef::description[-1]}) {
$currentstring.=' '.$element.' ';
}
pop(@Apache::londefdef::description);
$currentstring.='\end{description}';
delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
$Apache::londefdef::DL--;
}
return $currentstring;
}
#-- <dt> tag (end tag optional)
sub start_dt {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring='';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
&Apache::lonxml::startredirection();
$Apache::londefdef::DT[-1]++;
$Apache::londefdef::seenDT[-1]=1;
}
return $currentstring;
}
sub end_dt {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
if ($Apache::londefdef::DT[-1]) {
my $data=&item_cleanup();
push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
$Apache::londefdef::DT[-1]--;
}
}
return $currentstring;
}
sub item_cleanup {
my $item=&Apache::lonxml::endredirection();
$item=~s/\\begin{center}//g;
$item=~s/\\end{center}//g;
return $item;
}
#-- <dd> tag (end tag optional)
sub start_dd {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
if (!$Apache::londefdef::seenDT[-1]) {
push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
}
push(@{$Apache::londefdef::description[-1]},'');
$Apache::londefdef::description[-1]->[-1].=' \strut ';
$Apache::londefdef::DD[-1]++;
&Apache::lonxml::startredirection();
}
return $currentstring;
}
sub end_dd {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$Apache::londefdef::description[-1]->[-1].=
&Apache::lonxml::endredirection().' \vskip 0mm ';
$Apache::londefdef::DD[-1]--;
}
return $currentstring;
}
#-- <table> tag (end tag required)
# <table> also ends any prior <p> that is not closed.
# but, unless I allow <p>'s to nest, that's the
# only way I could think of to allow <p> in
# <tr> <th> bodies
#
#list of supported attributes: border,width,TeXwidth
sub start_table {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $textwidth = '';
my $currentstring = &end_p;
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
my $aa = {};
push @Apache::londefdef::table, $aa;
$Apache::londefdef::table[-1]{'row_number'} = -1;
#maximum table's width (default coincides with text line length)
if ($#Apache::londefdef::table==0) {
$textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
$textwidth=~/(\d+\.?\d*)/;
$textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
} else {
if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
#the maximum width of nested table is determined by LATeX width of parent cell
$textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
} else {
#try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
$textwidth=$Apache::londefdef::table[-2]{'width'};
for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
$textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
}
}
}
my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
if (not defined $TeXwidth) {
my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
if ($htmlwidth=~/%/) {
$Apache::londefdef::table[-1]{'percent'}=1;
$htmlwidth=~/(\d+)/;
$Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
} else {
$Apache::londefdef::table[-1]{'width'}=$textwidth;
}
} elsif ($TeXwidth=~/%/) {
$Apache::londefdef::table[-1]{'percent'}=1;
$TeXwidth=~/(\d+)/;
$Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
} else {
$Apache::londefdef::table[-1]{'forcetablewidth'}=1;
$Apache::londefdef::table[-1]{'width'}=$TeXwidth;
}
#table's border
my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
unless (defined $border) { $border = 0; }
if ($border) {
$Apache::londefdef::table[-1]{'hinc'} = '\hline ';
$Apache::londefdef::table[-1]{'vinc'} = '&';
$Apache::londefdef::table[-1]{'vvinc'} = '|';
} else {
$Apache::londefdef::table[-1]{'hinc'} = '';
$Apache::londefdef::table[-1]{'vinc'} = '&';
$Apache::londefdef::table[-1]{'vvinc'} = '';
}
if ($#Apache::londefdef::table==0) {
$Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
}
$Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
$Apache::londefdef::table[-1]{'TeXlen'}=[];
$Apache::londefdef::table[-1]{'objectlen'}=[];
$Apache::londefdef::table[-1]{'objectsignal'}=[];
$Apache::londefdef::table[-1]{'maxlen'}=[];
$Apache::londefdef::table[-1]{'minlen'}=[];
$Apache::londefdef::table[-1]{'content'}=[];
$Apache::londefdef::table[-1]{'align'}=[];
$currentstring.='\keephidden{NEW TABLE ENTRY}';
}
return $currentstring;
}
sub end_table {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
my $inmemory = '';
my $output = '';
my $WARNING='';
#width of columns from TeXwidth attributes
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
}
}
}
#free space and number of empty columns
my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;}
for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
$empty_columns++;
} else {
$available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
}
}
#boundaries for contents columns
my @min_len=();#columns can not be narrower
my @max_len=();#maximum length of column
for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
my ($localmin,$localmax)=(0,0);
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
$localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
}
if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
$localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
}
}
push @min_len, $localmin;
push @max_len, $localmax;
}
for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
my $localmin=0,;
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
$localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
}
}
if ($max_len[$jn]<$localmin) {
$max_len[$jn]=$localmin;
$Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
}#object size is bigger
if ($min_len[$jn]<$localmin) {
$min_len[$jn]=$localmin;
$Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
}#object size is bigger
if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
$min_len[$jn]=0;
$max_len[$jn]=0;
}
}
#final adjustment of column width
my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
my @adjust=();
#step 1. adjustment by maximum value
my $space_neeeded=0;
for (my $jn=0;$jn<=$#max_len;$jn++) {
$space_neeeded=$space_neeeded+$max_len[$jn];
}
if ($space_neeeded<=$available_space) {
for (my $jn=0;$jn<=$#max_len;$jn++) {
if ($fwidth[$jn]==0) {
$fwidth[$jn]=$max_len[$jn];
}
}
} else {
#step 2. adjustment by minimum value (estimation)
$space_neeeded=0;
for (my $jn=0;$jn<=$#min_len;$jn++) {
$space_neeeded+=$min_len[$jn];
}
if ($space_neeeded>$available_space) {
$WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
for (my $jn=0;$jn<=$#max_len;$jn++) {
if ($fwidth[$jn]==0) {
$fwidth[$jn]=$min_len[$jn];
}
}
#check if we have objects which can be scaled
my $how_many_to_scale=0;
my @to_scale=();
for (my $jn=0;$jn<=$#max_len;$jn++) {
if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
$how_many_to_scale++;
push @to_scale, $jn;
}
}
if ($how_many_to_scale>0) {
my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
foreach my $jn (@to_scale) {
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
$Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
if ($1 ne '') {
my $current_length=&recalc($1);
$current_length=~/(\d+\.?\d*)/;
$current_length=$current_length-$space_to_adjust;
$Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
}
$Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
if ($1 ne '') {
my $current_length=$1;
$current_length=$current_length-$space_to_adjust;
$Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
}
}
$fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
}
}
} else {
#step 3. adjustment over minimal + corrections
my $enlarge_coef=$available_space/$space_neeeded;
my $acsessive=0;
for (my $jn=0;$jn<=$#min_len;$jn++) {
$adjust[$jn]=$min_len[$jn]*$enlarge_coef;
if ($adjust[$jn]>$max_len[$jn]) {
$fwidth[$jn]=$max_len[$jn];
$acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
$adjust[$jn]=0;
}
}
if ($acsessive>0) {
#we have an excess of space and can redistribute it
my $notempty_columns=0;
for (my $jn=0;$jn<=$#min_len;$jn++) {
if ($adjust[$jn]!=0) {
$notempty_columns++;
}
}
my $per_column=$acsessive/$notempty_columns;
for (my $jn=0;$jn<=$#min_len;$jn++) {
if ($adjust[$jn]!=0) {
$adjust[$jn]+=$per_column;
$fwidth[$jn]=$adjust[$jn];
}
}
} else {
for (my $jn=0;$jn<=$#min_len;$jn++) {
$fwidth[$jn]=$adjust[$jn];
}
}
}
}
#use all available width if it is defined in % or as TeXwidth
if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
my $current=0;
for (my $i=0;$i<=$#fwidth;$i++) {
$current+=$fwidth[$i];
}
my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
for (my $i=0;$i<=$#fwidth;$i++) {
$fwidth[$i]*=$coef;
}
}
#removing of empty columns if allowed
my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
if ($permission eq 'yes') {
my @cleaned_table=();
my @cleaned_header=();
my $colind=0;
for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
if ($fwidth[$jn]!=0) {
#we need to copy column
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
$cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
$cleaned_header[$colind]=$fwidth[$jn];
}
$colind++;
}
}
$Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
@fwidth=@cleaned_header;
}
#construct header of the table
my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
for (my $in=0;$in<=$#fwidth;$in++) {
$header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
}
$header_of_table .= '}';
#fill the table
for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
for (my $jn=0;$jn<=$#fwidth;$jn++) {
if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
$output.='\vspace*{-6 mm}\begin{center}';
} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
$output.=' \hfill \llap{'
}
$output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
$output.='\end{center}\vspace*{-6 mm}';
} elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
$output.='} ';
}
if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
}
$output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
}
$Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
if ($#Apache::londefdef::table > 0) {
my $inmemory = $Apache::londefdef::table[-1]{'output'};
pop @Apache::londefdef::table;
push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
} else {
$currentstring .= $Apache::londefdef::table[-1]{'output'};
pop @Apache::londefdef::table;
undef @Apache::londefdef::table;
}
}
return $currentstring;
}
#-- <tr> tag (end tag optional)
sub start_tr {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$Apache::londefdef::table[-1]{'row_number'}++;
my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
if ($alignchar ne '') {
push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
} else {
push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
}
push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
$Apache::londefdef::table[-1]{'counter_columns'} = -1;
push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
push @ {$Apache::londefdef::table[-1]{'content'}}, [];
}
return $currentstring;
}
sub end_tr {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # Close any pending <p> in the row.
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
if ($Apache::londefdef::TD_redirection) {
&end_td_tex($parstack,$parser,$safeeval);
}
}
return $currentstring;
}
#-- <td> tag (end tag optional)
sub start_td {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$Apache::londefdef::TD_redirection = 1;
&tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
}
return $currentstring;
}
sub tag_check {
my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
my @ar=@$parstack;
for (my $i=$#ar-1;$i>=0;$i--) {
if (lc($$tagstack[$i]) eq $good_tag) {
&start_td_tex($parstack,$parser,$safeeval);
last;
} elsif (lc($$tagstack[$i]) eq $bad_tag) {
splice @ar, $i+1;
&end_td_tex(\@ar,$parser,$safeeval);
&start_td_tex($parstack,$parser,$safeeval);
last;
}
}
return '';
}
sub start_td_tex {
my ($parstack,$parser,$safeeval) = @_;
my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
if ($alignchar eq '') {
$alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
}
push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
$Apache::londefdef::table[-1]{'counter_columns'}++;
my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
if (defined $TeXwidth) {
my $current_length=&recalc($TeXwidth);
$current_length=~/(\d+\.?\d*)/;
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
}
&Apache::lonxml::startredirection();
return '';
}
sub end_td_tex {
my ($parstack,$parser,$safeeval) = @_;
my $current_row = $Apache::londefdef::table[-1]{'row_number'};
my $data=&Apache::lonxml::endredirection();
my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
if (defined $TeXwidth) {
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
} else {
if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
my $garbage_data=$data;
my $fwidth=0;
while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
my $current_length=&recalc($1);
$current_length=~/(\d+\.?\d*)/;
if ($fwidth<$1) {$fwidth=$1;}
$garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
}
while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
my $current_length=$1;
if ($fwidth<$current_length) {$fwidth=$current_length;}
$garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
}
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
} elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) {
my $garbage_data=$data;
my $fwidth=0;
while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
my $current_length=&recalc($1);
$current_length=~/(\d+\.?\d*)/;
if ($fwidth<$1) {$fwidth=$1;}
$garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
}
while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
my $current_length=&recalc($1);
$current_length=~/(\d+\.?\d*)/;
if ($fwidth<$1) {$fwidth=$1;}
$garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
}
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
$data=~s/\\\\\s*$//;
} else {
$data=~s/^\s+(\S.*)/$1/;
$data=~s/(.*\S)\s+$/$1/;
$data=~s/(\s)+/$1/;
my ($current_length,$min_length)=(0,0);
if ($data=~/\\vskip/) {
my $newdata=$data;
$newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
foreach my $elementdata (@newdata) {
my $lengthnewdata=2.5*&LATEX_length($elementdata);
if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
my @words=split(/ /,$elementdata);
foreach my $word (@words) {
my $lengthword=2.5*&LATEX_length($word);
if ($min_length<$lengthword) {$min_length=$lengthword;}
}
}
} else {
$current_length=2.5*&LATEX_length($data);
my @words=split(/ /,$data);
foreach my $word (@words) {
my $lengthword=2*&LATEX_length($word);
if ($min_length<$lengthword) {$min_length=$lengthword;}
}
}
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
}
}
for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
$data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
}
push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
return'';
}
sub end_td {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$Apache::londefdef::TD_redirection =0;
&end_td_tex($parstack,$parser,$safeeval);
}
return $currentstring;
}
#-- <th> tag (end tag optional)
sub start_th {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$Apache::londefdef::TD_redirection = 1;
&tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
}
return $currentstring;
}
sub tagg_check {
my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
my @ar=@$parstack;
for (my $i=$#ar-1;$i>=0;$i--) {
if (lc($$tagstack[$i]) eq $good_tag) {
&start_th_tex($parstack,$parser,$safeeval);
last;
} elsif (lc($$tagstack[$i]) eq $bad_tag) {
splice @ar, $i+1;
&end_th_tex(\@ar,$parser,$safeeval);
&start_th_tex($parstack,$parser,$safeeval);
last;
}
}
return '';
}
sub start_th_tex {
my ($parstack,$parser,$safeeval) = @_;
my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
if ($alignchar eq '') {
$alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
}
push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
$Apache::londefdef::table[-1]{'counter_columns'}++;
my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
if (defined $TeXwidth) {
my $current_length=&recalc($TeXwidth);
$current_length=~/(\d+\.?\d*)/;
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
}
&Apache::lonxml::startredirection();
return '';
}
sub end_th_tex {
my ($parstack,$parser,$safeeval) = @_;
my $current_row = $Apache::londefdef::table[-1]{'row_number'};
my $data=&Apache::lonxml::endredirection();
my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
if (defined $TeXwidth) {
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
} else {
if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
my $garbage_data=$data;
my $fwidth=0;
while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
my $current_length=&recalc($1);
$current_length=~/(\d+\.?\d*)/;
if ($fwidth<$1) {$fwidth=$1;}
$garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
}
while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
my $current_length=$1;
if ($fwidth<$current_length) {$fwidth=$current_length;}
$garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
}
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
} else {
$data=~s/^\s+(\S.*)/$1/;
$data=~s/(.*\S)\s+$/$1/;
$data=~s/(\s)+/$1/;
my ($current_length,$min_length)=(0,0);
if ($data=~/\\vskip/) {
my $newdata=$data;
$newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
foreach my $elementdata (@newdata) {
my $lengthnewdata=2.5*&LATEX_length($elementdata);
if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
my @words=split(/ /,$elementdata);
foreach my $word (@words) {
my $lengthword=2.5*&LATEX_length($word);
if ($min_length<$lengthword) {$min_length=$lengthword;}
}
}
} else {
$current_length=2.5*&LATEX_length($data);
my @words=split(/ /,$data);
foreach my $word (@words) {
my $lengthword=2*&LATEX_length($word);
if ($min_length<$lengthword) {$min_length=$lengthword;}
}
}
push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
}
}
for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
$data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
}
#make data bold
$data='\textbf{'.$data.'}';
push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
return'';
}
sub end_th {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # Close any open <p> in the row.
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$Apache::londefdef::TD_redirection =0;
&end_th_tex($parstack,$parser,$safeeval);
}
return $currentstring;
}
#-- <img> tag (end tag forbidden)
#
# Render the <IMG> tag.
# <IMG> has the following attributes (in addition to the
# standard HTML ones:
# TeXwrap - Governs how the tex target will try to wrap text around
# horizontally aligned images.
# TeXwidth - The width of the image when rendered for print (mm).
# TeXheight - The height of the image when rendered for print (mm)
# (Note there seems to also be support for this as a % of page size)
#
sub start_img {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
undef,1);
if (not $src and ($target eq 'web' or $target eq 'tex')) {
my $inside = &Apache::lonxml::get_all_text("/img",$parser);
return '';
}
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
my $currentstring = '';
my $scaling = .3;
# Render unto browsers that which are the browser's...
if ($target eq 'web') {
if ($env{'browser.imagesuppress'} ne 'on') {
$currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
} else {
my $alttag= &Apache::lonxml::get_param
('alt',$parstack,$safeeval,undef,1);
unless ($alttag) {
$alttag=&Apache::lonmeta::alttag
($Apache::lonxml::pwd[-1],$src);
}
$currentstring.='[IMAGE: '.$alttag.']';
}
# and render unto TeX that which is LaTeX
} elsif ($target eq 'tex') {
#
# The alignment will require some superstructure to be put around
# the \includegraphics stuff. At present we can only partially
# simulate the alignments offered by html.
#
#
my $align = lc(&Apache::lonxml::get_param('align',
$parstack,
$safeeval,
undef,1));
if(!$align) {
$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 = "parbox";
}
&Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
#if original gif/jpg/png file exist do following:
my $origsrc=$src;
my ($path,$file) = &get_eps_image($src);
$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
&Apache::lonxml::debug("path = $path file = $file src = $src");
if (-e $src) {
&Apache::lonxml::debug("$src exists");
my ($height_param,$width_param)=
&image_size($origsrc,0.3,$parstack,$safeeval);
my $destpath = $path;
$destpath =~ s/ /\_/g; # Spaces in path cause LaTex to vomit.
my $destfile = $file;
$destfile =~ s/ /\_/g;
my $size;
if ($width_param) { $size.='width='.$width_param.' mm,'; }
if ($height_param) { $size.='height='.$height_param.' mm]'; }
$size='['.$size;
$size=~s/,$/]/;
$currentstring .= '\graphicspath{{'.$destpath.'}}'
.'\includegraphics'.$size.'{'.$destfile.'} ';
# If there's an alignment specification we need to honor it here.
# For the horizontal alignments, we will also honor the
# value of the latex specfication. The default is parbox,
# and that's used for illegal values too.
#
# Even though we set a default alignment value, the user
# could have given us an illegal value. In that case we
# just use the default alignment of bottom..
if ($align eq "top") {
$currentstring = '\raisebox{-'.$height_param.'mm}{'.$currentstring.'}';
} elsif (($align eq "center") || ($align eq "middle")) { # Being kind
my $offset = $height_param/2;
$currentstring = '\raisebox{-'.$offset.'mm}{'.$currentstring.'}';
} elsif ($align eq "left") {
if ($latex_rendering eq "parpic") {
$currentstring = '\parpic[l]{'.$currentstring.'}';
} else { # parbox rendering
$currentstring = "\\strut\\newline\n".
'\parbox{'.$width_param.'mm}{'.$currentstring.'}';
}
} elsif ($align eq "right") {
if ($latex_rendering eq "parpic") {
$currentstring = '\parpic[r]{'.$currentstring.'}';
} else { # parbox rendering.
$currentstring = '\parbox{'.$width_param.'mm}{\begin{flushright}'
.$currentstring.'\end{flushright}} \newline'."\n";
}
} else { # Bottom is also default.
# $currentstring = '\raisebox{'.$height_param.'mm}{'.$currentstring.'}';
}
} else {
&Apache::lonxml::debug("$src does not exist");
#original image file doesn't exist so check the alt attribute
my $alt =
&Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
unless ($alt) {
$alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
}
if ($alt) { $currentstring .= ' '.$alt.' '; }
}
# And here's where the semi-quote breaks down: allow the user
# to edit the beast as well by rendering the problem for edit:
} elsif ($target eq 'edit') {
$currentstring .=&Apache::edit::tag_start($target,$token);
$currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
&Apache::edit::browse('src',undef,'alt').' '.
&Apache::edit::search('src',undef,'alt').'<br />';
$currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
$currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
$currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
$currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
$currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
$currentstring .=&Apache::edit::select_arg('Alignment:','align',
['','bottom','middle','top','left','right'],$token,5);
$currentstring .=&Apache::edit::select_arg('TeXwrap:', 'TeXwrap',
['', 'parbox', 'parpic'], $token, 2);
$currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
$currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
if ($width) { $currentstring.=' width="'.$width.'" '; }
if ($height) { $currentstring.=' height="'.$height.'" '; }
$currentstring .= ' />';
} elsif ($target eq 'modified') {
my ($osrc,$owidth,$oheight)=
($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
my $ctag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'src','alt','align',
'TeXwidth','TeXheight', 'TeXwrap',
'width','height');
my ($nsrc,$nwidth,$nheight)=
($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
&image_replication($loc);
my ($iwidth,$iheight);
if (-e $loc) {
my $image = Image::Magick->new;
$image->Read($loc);
($iwidth, $iheight) = ($image->Get('width'),
$image->Get('height'));
}
if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
# changed image or no size specified,
# if they didn't explicitly change the
# width or height use the ones from the image
if ($iwidth && $iheight) {
if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
$token->[2]{'width'} = $iwidth;$ctag=1;
}
if ($oheight == $nheight || (!$nwidth && !$nheight)) {
$token->[2]{'height'}=$iheight;$ctag=1;
}
}
}
my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
# if we don't have a width or height
if ($iwidth && $cwidth && !$cheight) {
$token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
}
if ($iheight && $cheight && !$cwidth) {
$token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
}
if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
}
return $currentstring;
}
sub end_img {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring = '';
}
return $currentstring;
}
#-- <applet> tag (end tag required)
sub start_applet {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;
my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
undef,1);
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;
my $currentstring = '';
if ($target eq 'web') {
if ($env{'browser.appletsuppress'} ne 'on') {
$currentstring = &Apache::lonenc::encrypt_ref($token,
{'code'=>$code,
'archive'=>$archive}
);
} else {
my $alttag= &Apache::lonxml::get_param('alt',$parstack,
$safeeval,undef,1);
unless ($alttag) {
$alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
$code);
}
$currentstring='[APPLET: '.$alttag.']';
}
} elsif ($target eq 'tex') {
my $alttag= &Apache::lonxml::get_param('alt',$parstack,
$safeeval,undef,1);
unless ($alttag) {
my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
undef,1);
$alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
$code);
}
$currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
'.}\end{center}';
}
return $currentstring;
}
sub end_applet {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
}
return $currentstring;
}
#-- <embed> tag (end tag optional/required)
sub start_embed {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
my $currentstring = '';
if ($target eq 'web') {
if ($env{'browser.embedsuppress'} ne 'on') {
$currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
} else {
my $alttag=&Apache::lonxml::get_param
('alt',$parstack,$safeeval,undef,1);
unless ($alttag) {
$alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
}
$currentstring='[EMBED: '.$alttag.']';
}
} elsif ($target eq 'tex') {
}
return $currentstring;
}
sub end_embed {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
}
return $currentstring;
}
#-- <param> tag (end tag forbidden)
sub start_param {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
if (&Apache::lonxml::get_param
('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);
}
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
my $currentstring = '';
if ($target eq 'web') {
my %toconvert;
my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
if ($src) { $toconvert{'src'}= $src; }
my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
undef,1);
if ($name=~/^cabbase$/i) {
$toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
$safeeval,undef,1);
}
$currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
} elsif ($target eq 'tex') {
}
return $currentstring;
}
sub end_param {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
}
return $currentstring;
}
#-- <allow> tag
sub start_allow {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
$Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
&Apache::lonnet::clutter($src);
if ($target eq 'tex') { &image_replication($src); }
my $result;
if ($target eq 'edit') {
$result .=&Apache::edit::tag_start($target,$token);
$result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
$result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'src');
if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
}
return $result;
}
sub end_allow {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
return '';
}
#-- Frames (end tag required)
#-- <frameset>
sub start_frameset {
my ($target,$token) = @_;
my $currentstring = ''; # Close any pending para.
if ($target eq 'web') {
if (!$Apache::lonxml::registered &&
$env{'request.state'} eq 'published') {
$currentstring.='<head>'.
&Apache::lonmenu::registerurl(undef,$target).'</head>';
}
my $onLoad='';
foreach my $key (keys(%{$token->[2]})) {
if ($key =~ /^onload$/i) {
$onLoad.=$token->[2]->{$key}.';';
delete($token->[2]->{$key});
}
}
$token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
my $onUnload='';
foreach my $key (keys(%{$token->[2]})) {
if ($key =~ /^onunload$/i) {
$onUnload.=$token->[2]->{$key}.';';
delete($token->[2]->{$key});
}
}
$token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
';'.$onUnload;
$currentstring .= '<'.$token->[1];
foreach (keys %{$token->[2]}) {
$currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
}
$currentstring.='>';
}
return $currentstring;
}
sub end_frameset {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <xmp> (end tag required)
sub start_xmp {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\begin{verbatim}';
}
return $currentstring;
}
sub end_xmp {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '\end{verbatim}';
}
return $currentstring;
}
#-- <pre> (end tag required)
sub start_pre {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # close off pending <p>
if ($target eq 'web') {
$currentstring .= $token->[4];
} elsif ($target eq 'tex') {
$currentstring .= '\begin{verbatim}';
}
return $currentstring;
}
sub end_pre {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= $token->[2];
} elsif ($target eq 'tex') {
$currentstring .= '\end{verbatim}';
}
return $currentstring;
}
#-- <insert>
sub start_insert {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
$currentstring .= '<b>'.$display.'</b>';;
}
return $currentstring;
}
sub end_insert {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= '';
}
return $currentstring;
}
#-- <externallink>
sub start_externallink {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = '';
if ($target eq 'web') {
my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
$currentstring .= '<b>'.$display.'</b>';;
}
return $currentstring;
}
sub end_externallink {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring .= '';
}
return $currentstring;
}
#-- <blankspace heigth="">
sub start_blankspace {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
my $currentstring = &end_p; # closes off any unclosed <p>
if ($target eq 'tex') {
my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
$currentstring .= '\vskip '.$howmuch.' ';
}
return $currentstring;
}
sub end_blankspace {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'tex') {
$currentstring .= '';
}
return $currentstring;
}
#-- <abbr> tag (end tag required)
sub start_abbr {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_abbr {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <acronym> tag (end tag required)
sub start_acronym {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_acronym {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <area> tag (end tag forbidden)
sub start_area {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_area {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <base> tag (end tag forbidden)
sub start_base {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_base {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <bdo> tag (end tag required)
sub start_bdo {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_bdo {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <bgsound> tag (end tag optional)
sub start_bgsound {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_bgsound {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <blink> tag (end tag required)
sub start_blink {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_blink {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <blockquote> tag (end tag required)
sub start_blockquote {
my ($target,$token) = @_;
my $currentstring = &end_p; # Close any unclosed <p>
if ($target eq 'web') {
$currentstring .= $token->[4];
}
return $currentstring;
}
sub end_blockquote {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <button> tag (end tag required)
sub start_button {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_button {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <caption> tag (end tag required)
sub start_caption {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_caption {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <col> tag (end tag forbdden)
sub start_col {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_col {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <colgroup> tag (end tag optional)
sub start_colgroup {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_colgroup {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <del> tag (end tag required)
sub start_del {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_del {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <fieldset> tag (end tag required)
sub start_fieldset {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_fieldset {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <frame> tag (end tag forbidden)
sub start_frame {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_frame {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <iframe> tag (end tag required)
sub start_iframe {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_iframe {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <ins> tag (end tag required)
sub start_ins {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_ins {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <isindex> tag (end tag forbidden)
sub start_isindex {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_isindex {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <keygen> tag (end tag forbidden)
sub start_keygen {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_keygen {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <label> tag
sub start_label {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_label {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <layer> tag (end tag required)
sub start_layer {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_layer {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <legend> tag (end tag required)
sub start_legend {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_legend {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <link> tag (end tag forbidden)
sub start_link {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_link {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <marquee> tag (end tag optional)
sub start_marquee {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_marquee {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <multicol> tag (end tag required)
sub start_multicol {
my ($target,$token) = @_;
my $currentstring = &end_p; # Close any pending <p>
if ($target eq 'web') {
$currentstring .= $token->[4];
}
return $currentstring;
}
sub end_multicol {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <nobr> tag (end tag required)
sub start_nobr {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$currentstring='\mbox{';
}
return $currentstring;
}
sub end_nobr {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring='}';
}
return $currentstring;
}
#-- <noembed> tag (end tag required)
sub start_noembed {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_noembed {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <noframes> tag (end tag required)
sub start_noframes {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_noframes {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <nolayer> tag (end tag required)
sub start_nolayer {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_nolayer {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <noscript> tag (end tag required)
sub start_noscript {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_noscript {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <object> tag (end tag required)
sub start_object {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_object {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <optgroup> tag (end tag required)
sub start_optgroup {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_optgroup {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <samp> tag (end tag required)
sub start_samp {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$currentstring='\texttt{';
}
return $currentstring;
}
sub end_samp {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring='}';
}
return $currentstring;
}
#-- <server> tag
sub start_server {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_server {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <spacer> tag (end tag forbidden)
sub start_spacer {
my ($target,$token) = @_;
my $currentstring = &end_p; # Close off any open <p> tag.
if ($target eq 'web') {
$currentstring .= $token->[4];
}
return $currentstring;
}
sub end_spacer {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <span> tag (end tag required)
sub start_span {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_span {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <tbody> tag (end tag optional)
sub start_tbody {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_tbody {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <tfoot> tag (end tag optional)
sub start_tfoot {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_tfoot {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <thead> tag (end tag optional)
sub start_thead {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_thead {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <var> tag
sub start_var {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
} elsif ($target eq 'tex') {
$currentstring = '\textit{';
}
return $currentstring;
}
sub end_var {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
} elsif ($target eq 'tex') {
$currentstring = '}';
}
return $currentstring;
}
#-- <wbr> tag (end tag forbidden)
sub start_wbr {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[4];
}
return $currentstring;
}
sub end_wbr {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = $token->[2];
}
return $currentstring;
}
#-- <hideweboutput> tag
sub start_hideweboutput {
my ($target,$token) = @_;
if ($target eq 'web') {
&Apache::lonxml::startredirection();
}
return '';
}
sub end_hideweboutput {
my ($target,$token) = @_;
my $currentstring = '';
if ($target eq 'web') {
$currentstring = &Apache::lonxml::endredirection();
}
return '';
}
sub image_replication {
my $src = shift;
if (not -e $src) { &Apache::lonnet::repcopy($src); }
#replicates eps or ps
my $epssrc = my $pssrc = $src;
$epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
$pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
if (not -e $epssrc && not -e $pssrc) {
my $result=&Apache::lonnet::repcopy($epssrc);
if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
}
return '';
}
#
# Get correct sizing parameter for an image given
# it's initial ht. and wid. This allows sizing of
# images that are generated on-the-fly (e.g. gnuplot)
# as well as serving as a utility for image_size.
#
# Parameter:
# height_param
# width_param - Initial picture dimensions.
# scaling - A scale factor.
# parstack, - the current stack of tag attributes
# from the xml parser
# safeeval, - pointer to the safespace
# depth, - from what level in the stack to look for attributes
# (assumes -1 if unspecified)
# cis - look for attrubutes case insensitively
# (assumes false)
#
# Returns:
# height, width - new dimensions.
#
sub resize_image {
my ($height_param, $width_param, $scaling,
$parstack, $safeeval, $depth, $cis) = @_;
# First apply the scaling...
$height_param = $height_param * $scaling;
$width_param = $width_param * $scaling;
#do we have any specified LaTeX size of the picture?
my $toget='TeXwidth';
if ($cis) {
$toget=lc($toget);
}
my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
$safeeval,$depth,$cis);
$toget='TeXheight'; if ($cis) { $toget=lc($toget); }
my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
$safeeval,$depth,$cis);
#do we have any specified web size of the picture?
my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
$depth,1);
if ($TeXwidth) {
my $old_width_param=$width_param;
if ($TeXwidth=~/(\d+)\s*\%/) {
$width_param = $1*$env{'form.textwidth'}/100;
} else {
$width_param = $TeXwidth;
}
if ($TeXheight) {
$height_param = $TeXheight;
} elsif ($old_width_param) {
$height_param=$TeXwidth/$old_width_param*$height_param;
}
} elsif ($TeXheight) {
$height_param = $TeXheight;
if ($height_param) {
$width_param = $TeXheight/$height_param*$width_param;
}
} elsif ($width) {
my $old_width_param=$width_param;
$width_param = $width*$scaling;
if ($old_width_param) {
$height_param=$width_param/$old_width_param*$height_param;
}
}
if ($width_param > $env{'form.textwidth'}) {
my $old_width_param=$width_param;
$width_param =0.95*$env{'form.textwidth'};
if ($old_width_param) {
$height_param=$width_param/$old_width_param*$height_param;
}
}
return ($height_param, $width_param);
}
sub image_size {
my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
#size of image from gif/jpg/jpeg/png
my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
if (-e $ressrc) {
$src = $ressrc;
}
my $image = Image::Magick->new;
my $current_figure = $image->Read($src);
my $width_param = $image->Get('width');
my $height_param = $image->Get('height');
&Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
undef($image);
($height_param, $width_param) = &resize_image($height_param, $width_param,
$scaling, $parstack, $safeeval,
$depth, $cis);
return ($height_param, $width_param);
}
sub image_width {
my ($height, $width) = &image_size(@_);
return $width;
}
# Not yet 100% sure this is correct in all circumstances..
# due to my uncertainty about mods to image_size.
#
sub image_height {
my ($height, $width) = &image_size(@_);
return $height;
}
sub get_eps_image {
my ($src)=@_;
my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
&Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
$src=~s/\.(gif|png|jpg|jpeg)$/\.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/$1/|;
}
}
}
my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
&Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
return ($path.'/',$file);
}
sub eps_generation {
my ($src,$file,$width_param) = @_;
my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
my $temp_file = Apache::File->new('>>'.$filename);
print $temp_file "$src\n";
my $newsrc = $src;
$newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
$newsrc=~s/\/home\/httpd\/html\/res//;
$newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
$newsrc=~s/\/\.\//\//;
$newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
$newsrc=~s/\/home\/httpd\/lonUsers//;
$newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
}
if ($newsrc=~/\/userfiles\//) {
return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
} else {
return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
}
}
sub file_path {
my $src=shift;
my ($file,$path);
if ($src =~ m!(.*)/([^/]*)$!) {
$file = $2;
$path = $1.'/';
}
return $file,$path;
}
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;
}
1;
__END__
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