--- loncom/xml/londefdef.pm 2000/11/01 17:26:14 1.8
+++ loncom/xml/londefdef.pm 2008/05/05 10:18:26 1.387
@@ -1,1098 +1,4652 @@
# The LearningOnline Network with CAPA
# Tags Default Definition Module
#
-# last modified 06/26/00 by Alexander Sakharuk
+# $Id: londefdef.pm,v 1.387 2008/05/05 10:18:26 foxr Exp $
+#
+#
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+## Copyright for TtHfunc and TtMfunc by Ian Hutchinson.
+# TtHfunc and TtMfunc (the "Code") may be compiled and linked into
+# binary executable programs or libraries distributed by the
+# Michigan State University (the "Licensee"), but any binaries so
+# distributed are hereby licensed only for use in the context
+# of a program or computational system for which the Licensee is the
+# primary author or distributor, and which performs substantial
+# additional tasks beyond the translation of (La)TeX into HTML.
+# The C source of the Code may not be distributed by the Licensee
+# to any other parties under any circumstances.
+#
package Apache::londefdef;
+use Apache::lonnet;
use strict;
use Apache::lonxml;
+use Apache::File();
+use Image::Magick;
+use Apache::lonmenu();
+use Apache::lonmeta();
+use Apache::Constants qw(:common);
+use File::Basename;
+use LONCAPA();
+# use Data::Dumper;
+
+BEGIN {
+
+ &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
-sub BEGIN {
- &Apache::lonxml::register('Apache::londefdef',('m','html','head','map','applet','select','option','input','textarea','form','meta','title','body','center','b','strong','table','dt','h1','h2','h3','h4','h5','h6','cite','i','address','dd','dl','dir','ol','ul','menu','dfn','kbd','tt','code','em','q','p','br','big','small','basefont','font','s','sub','strike','sup','hr','a','li','u','output'));
}
-#===================================================================== TAG SUBROUTINES
+#
+# Dumps all elements of the table structure.
+# Need this 'cause evidently when given an array, Data::Dumper only seems
+# to dump element 0.
+#
+#sub debug_dump_table {
+# my $lastrow = $#Apache::londefdef::table;
+# &Apache::lonnet::logthis("Dumping table: Last row index: $lastrow");
+# my $row;
+# for ($row =0; $row <= $lastrow; $row++ ) {
+# my $text = Dumper($Apache::londefdef::table[$row]);
+# &Apache::lonnet::logthis("table [ $row ]".$text);
+# }
+#}
+sub initialize_londefdef {
+ $Apache::londefdef::TD_redirection=0;
+ @Apache::londefdef::table = ();
+ $Apache::londefdef::select=0;
+ undef(@Apache::londefdef::description);
+ @Apache::londefdef::DD=(0);
+ @Apache::londefdef::DT=(0);
+ @Apache::londefdef::seenDT=(0);
+ $Apache::londefdef::list_index=0;
+ undef($Apache::londefdef::head);
+ undef($Apache::londefdef::title);
+}
+
+#======================= TAG SUBROUTINES =====================
#-- <output>
- sub start_output {
- my ($target,$token,$parstack,$parser) = @_;
- $Apache::lonxml::textredirection = 1;
- my $result = '';
- return $result;
- }
- sub end_output {
- my ($target,$token,$parstack,$parser) = @_;
- $Apache::lonxml::textredirection = 0;
- my $result = '';
- return $result;
- }
+sub start_output {
+ my ($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,$token,$parstack,$parser) = @_;
- my $currentstring = '';
-# if ($target eq 'meta') {
-# my $inside = &Apache::lonxml::get_all_text("/m",$$parser[$#$parser]);
-# $currentstring ='';
-# }
- if ($target eq 'web') {
- my $inside = &Apache::lonxml::get_all_text("/m",$$parser[$#$parser]);
- $inside ='\\documentstyle{article}'.$inside;
-# &Apache::lonxml::debug($inside);
- $currentstring = &Apache::lontexconvert::converted(\$inside);
-# &Apache::lonxml::debug($currentstring);
+sub start_m {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
+ my $currentstring = '';
+ my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
+ if ($target eq 'web' || $target eq 'analyze') {
+ &Apache::lonxml::debug("M is starting with:$inside:");
+ my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
+ if ($eval eq 'on') {
+ $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
+ #&Apache::lonxml::debug("M is evaulated to:$inside:");
+ }
+ my $tex = $inside;
+ my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
+ $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
+ if ($Apache::lontexconvert::errorstring) {
+ my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occured while attempting to convert this TeX: <pre>';
+ $tex = &HTML::Entities::encode($tex,'<>&"');
+ my ($linenumber) =
+ ($Apache::lontexconvert::errorstring =~ /Line (\d+)/);
+ if (defined($linenumber)) {
+ my @tex=split("\n",$tex);
+ $tex[$linenumber]='<b><font color="red">'.
+ $tex[$linenumber].'</font></b>';
+ $tex=join("\n",@tex);
+ }
+ &Apache::lonxml::warning($errormsg.$tex.'</pre>');
+ $Apache::lontexconvert::errorstring='';
+ }
+ #&Apache::lonxml::debug("M is ends with:$currentstring:");
+ $Apache::lonxml::post_evaluate=0;
+ } elsif ($target eq 'tex') {
- } elsif ($target eq 'tex') {
- $currentstring = "";
- }
- return $currentstring;
+ $currentstring = $inside;
+ my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
+ if ($eval eq 'on') {
+ $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
+ }
+ if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
+ # detect simple math mode entry exits, and convert them
+ # to use \ensuremath ... unless there's a \verb inside.
+ if (! ($currentstring=~/\\verb/)) {
+ if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
+ $currentstring=~s/^(\s*)\$/$1/;
+ $currentstring=~s/\$(\s*)$/$1/;
+ $currentstring='\ensuremath{'.$currentstring.'}';
+ }
}
- sub end_m {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- } elsif ($target eq 'tex') {
- $currentstring = "";
- } elsif ($target eq 'meta') {
- }
- return $currentstring;
+ $Apache::lonxml::post_evaluate=0;
+ }
+ return $currentstring;
+}
+
+sub end_m {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'tex') {
+ $currentstring = "";
+ }
+ return $currentstring;
+}
+
+sub start_tthoption {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
+ my $result;
+ if ($target eq 'web' || $target eq 'webgrade') {
+ my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
+ $style);
+ $inside=~s/^\s*//;
+ if ($env{'browser.mathml'}) {
+ &tth::ttmoptions($inside);
+ } else {
+ &tth::tthoptions($inside);
}
-#-------------------------------------------------------------------------- <html> tag
- sub start_html {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- }
- return $currentstring;
- }
- sub end_html {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- }
- return $currentstring;
- }
-#-------------------------------------------------------------------------- <head> tag
- sub start_head {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- }
- return $currentstring;
- }
- sub end_head {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- }
- return $currentstring;
- }
-#--------------------------------------------------------------------------- <map> tag
- sub start_map {
- my ($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 $currentstring;
- }
-#------------------------------------------------------------------------ <applet> tag
- sub start_applet {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- }
- return $currentstring;
- }
- sub end_applet {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- }
- return $currentstring;
- }
-#------------------------------------------------------------------------ <select> tag
- sub start_select {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- }
- return $currentstring;
- }
- sub end_select {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- }
- return $currentstring;
- }
-#------------------------------------------------------------------------ <option> tag
- sub start_option {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- }
- return $currentstring;
- }
- sub end_option {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- }
- return $currentstring;
- }
-#------------------------------------------------------------------------- <input> tag
- sub start_input {
- my ($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 $currentstring;
- }
-#---------------------------------------------------------------------- <textarea> tag
- sub start_textarea {
- my ($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 $currentstring;
- }
-#-------------------------------------------------------------------------- <form> tag
- sub start_form {
- my ($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 $currentstring;
- }
-#------------------------------------------------------------------------- <title> tag
- sub start_title {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- }
- return $currentstring;
- }
- sub end_title {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- }
- return $currentstring;
- }
-#-------------------------------------------------------------------------- <meta> tag
- sub start_meta {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- }
- return $currentstring;
- }
- sub end_meta {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- }
- return $currentstring;
- }
-#-------------------------------------------------------------------------- <body> tag
- sub start_body {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring = " \\begin{document} ";
- }
- return $currentstring;
- }
- sub end_body {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring = " \\end{document}";
- }
- return $currentstring;
- }
-#------------------------------------------------------------------------ <center> tag
- sub start_center {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($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 $currentstring;
- }
-#----------------------------------------------------------------------------- <b> tag
- sub start_b {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring = " {\\bf ";
- }
- return $currentstring;
- }
- sub end_b {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring = "}";
- }
- return $currentstring;
- }
-#------------------------------------------------------------------------ <strong> tag
- sub start_strong {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring = " {\\bf ";
- }
- return $currentstring;
- }
- sub end_strong {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
-
- $currentstring = $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring = "}";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <h1> tag
- sub start_h1 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "\\chapter{ ";
- }
- return $currentstring;
- }
- sub end_h1 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <h2> tag
- sub start_h2 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "\\section{ ";
- }
- return $currentstring;
- }
- sub end_h2 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <h3> tag
- sub start_h3 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "\\subsection{ ";
- }
- return $currentstring;
- }
- sub end_h3 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <h4> tag
- sub start_h4 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "\\subsubsection{ ";
- }
- return $currentstring;
- }
- sub end_h4 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <h5> tag
- sub start_h5 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "\\paragraph{ ";
- }
- return $currentstring;
- }
- sub end_h5 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <h6> tag
- sub start_h6 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "\\subparagraph{ ";
- }
- return $currentstring;
- }
- sub end_h6 {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#-------------------------------------------------------------------------- <cite> tag
- sub start_cite {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "{ \\it ";
- }
- return $currentstring;
- }
- sub end_cite {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#----------------------------------------------------------------------------- <i> tag
- sub start_i {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "{ \\it ";
- }
- return $currentstring;
- }
- sub end_i {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#----------------------------------------------------------------------- <address> tag
- sub start_address {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "{ \\it ";
- }
- return $currentstring;
- }
- sub end_address {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#--------------------------------------------------------------------------- <dfn> tag
- sub start_dfn {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "{ \\it ";
- }
- return $currentstring;
- }
- sub end_dfn {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <tt> tag
- sub start_tt {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "{ \\tt ";
- }
- return $currentstring;
- }
- sub end_tt {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <kbd> tag
- sub start_kbd {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "{ \\tt ";
- }
- return $currentstring;
- }
- sub end_kbd {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#-------------------------------------------------------------------------- <code> tag
- sub start_code {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "{ \\tt ";
- }
- return $currentstring;
- }
- sub end_code {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= "}";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <em> tag
- sub start_em {
- my ($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 $currentstring;
- }
-#----------------------------------------------------------------------------- <q> tag
- sub start_q {
- my ($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 $currentstring;
- }
-#----------------------------------------------------------------------------- <p> tag
- sub start_p {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "{\\par ";
- }
- return $currentstring;
- }
- sub end_p {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= " }";
- }
- return $currentstring;
+ }
+ return $result;
+}
+
+sub end_tthoption {
+ my ($target,$token) = @_;
+ my $result;
+ return $result;
+}
+
+#-- <html> tag (end tag optional)
+sub start_html {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
+ # start_body() takes care of emitting the <html>
+ } elsif ($target eq 'tex') {
+ $currentstring .=
+ '\documentclass[letterpaper,twoside]{article}\raggedbottom';
+ if (($env{'form.latex_type'}=~'batchmode') ||
+ (!$env{'request.role.adv'})) {$currentstring .='\batchmode';}
+ $currentstring .= '\newcommand{\keephidden}[1]{}'.
+ '\renewcommand{\deg}{$^{\circ}$}'.
+ '\usepackage{multirow}'.
+ '\usepackage{longtable}'.
+ '\usepackage{textcomp}'.
+ '\usepackage{makeidx}'.
+ '\usepackage[dvips]{graphicx}'.
+ '\usepackage{wrapfig}'.
+ '\usepackage{picins}'.
+ '\usepackage[T1]{fontenc}'."\n".
+ '\usepackage{ucs}'."\n".
+ '\usepackage[utf8x]{inputenc}'."\n".
+ '\usepackage{pifont}' ."\n".
+ '\usepackage{latexsym}'."\n".
+ '\usepackage{epsfig}'.
+ '\usepackage{calc}'.
+ '\usepackage{amsmath}'.
+ '\usepackage{amssymb}'.
+ '\usepackage{amsfonts}'.
+ '\usepackage{amsthm}'.
+ '\usepackage{amscd}'.
+ '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
+ '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
+ }
+ return $currentstring;
+}
+
+sub end_html {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ # end_body takes care of the </html>
+ }
+ return $currentstring;
+}
+
+#-- <head> tag (end tag optional)
+sub start_head {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ &Apache::lonxml::startredirection();
+ }
+ return $currentstring;
+}
+
+sub end_head {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if (($target eq 'web' && $env{'request.state'} eq 'published') ||
+ ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
+ # in case there is a </head> but no <head>
+ if ($Apache::lonxml::redirection) {
+ $Apache::londefdef::head = &Apache::lonxml::endredirection();
}
-#---------------------------------------------------------------------------- <br> tag
- sub start_br {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "\\\\";
- }
- return $currentstring;
- }
- sub end_br {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- }
- return $currentstring;
- }
-#--------------------------------------------------------------------------- <big> tag
- sub start_big {
- my ($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;
+ }
+ return $currentstring;
+}
+
+#-- <map> tag (end tag required)
+sub start_map {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_map {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <select> tag (end tag required)
+sub start_select {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ $Apache::londefdef::select=0;
+ }
+ return $currentstring;
+}
+
+sub end_select {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <option> tag (end tag optional)
+sub start_option {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ $Apache::londefdef::select++;
+ if ($Apache::londefdef::select == 1) {
+ $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
+ } else {
+ $currentstring='\keephidden{';
}
-#------------------------------------------------------------------------- <small> tag
- sub start_small {
- my ($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 $currentstring;
+}
+
+sub end_option {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring='}';
+ }
+ return $currentstring;
+}
+
+#-- <input> tag (end tag forbidden)
+sub start_input {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_input {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <textarea> tag (end tag required)
+sub start_textarea {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_textarea {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <form> tag (end tag required)
+sub start_form {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_form {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <title> tag (end tag required)
+sub start_title {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $Apache::londefdef::title =
+ &Apache::lonxml::get_all_text('/title',$parser,$style);
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\keephidden{Title of the document: '
+ }
+ if ($target eq 'meta') {
+ $currentstring='<title>';
+ &start_output($target);
+ }
+ return $currentstring;
+}
+
+sub end_title {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ # start_title takes care of swallowing the title
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ if ($target eq 'meta') {
+ &end_output($target);
+ $currentstring='</title>';
+ }
+ return $currentstring;
+}
+
+#-- <meta> tag (end tag forbidden)
+sub start_meta {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ my $args='';
+ if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
+ if ($args eq '') {
+ &Apache::lonxml::get_all_text("/meta",$parser,$style);
+ } else {
+ $currentstring = $token->[4];
+ }
+ } elsif ($target eq 'meta') {
+ unless (&Apache::lonxml::get_param
+ ('http-equiv',$parstack,$safeeval,undef,1)) {
+ my $name=$token->[2]->{'name'};
+ $name=~tr/A-Z/a-z/;
+ $name=~s/\s/\_/gs;
+ $name=~s/\W//gs;
+ if ($name) {
+ $currentstring='<'.$name;
+ my $display=&Apache::lonxml::get_param
+ ('display',$parstack,$safeeval,undef,1);
+ if ($display) {
+ $display=~s/\"/\'/g;
+ $currentstring.=' display="'.$display.'"';
+ }
+ $currentstring.='>'.
+ &Apache::lonxml::get_param
+ ('content',$parstack,$safeeval,undef,1).
+ '</'.$name.'>';
+ }
+ my $display=&Apache::lonxml::get_param
+ ('display',$parstack,$safeeval,undef,1);
+ if ($display) {
+ $display=&HTML::Entities::encode($display,'<>&"');
+ $currentstring.='<'.$name.'.display>'.$display.
+ '</'.$name.'.display>';
}
- return $currentstring;
}
-#---------------------------------------------------------------------- <basefont> tag
- sub start_basefont {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- }
- return $currentstring;
- }
-#-------------------------------------------------------------------------- <font> tag
- sub start_font {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- }
- return $currentstring;
- }
- sub end_font {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- }
- return $currentstring;
- }
-#------------------------------------------------------------------------ <strike> tag
- sub start_strike {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "{\\underline ";
- }
- return $currentstring;
- }
- sub end_strike {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= " }";
- }
- return $currentstring;
+ } 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();
+ }
+ } elsif ($target eq 'edit') {
+ $currentstring .= &Apache::edit::tag_start($target,$token);
+ $currentstring .= &Apache::edit::text_arg('Name:','name',$token,30);
+ $currentstring .= &Apache::edit::text_arg('Content:','content',$token,70);
+ $currentstring .= &Apache::edit::end_row();
+ } elsif ($target eq 'modified') {
+ my $constructtag =
+ &Apache::edit::get_new_args($token,$parstack,$safeeval,
+ 'name','content');
+ if ($constructtag) { $currentstring = &Apache::edit::rebuild_tag($token); }
+ }
+ return $currentstring;
+}
+
+sub end_meta {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ my $args='';
+ if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
+ if ($args ne '') {
+ $currentstring = $token->[4];
+ }
+ } elsif ($target eq 'tex') {
+ my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
+ my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
+ if ((not defined $content) && (not defined $name)) {
+ &Apache::lonxml::endredirection();
}
-#----------------------------------------------------------------------------- <s> tag
- sub start_s {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "{\\underline ";
- }
- return $currentstring;
- }
- sub end_s {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= " }";
- }
- return $currentstring;
+ }
+ return $currentstring;
+}
+
+sub insert_meta {
+ return '
+ <meta />';
+}
+
+# accessrule
+sub start_accessrule {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
+ my $currentstring = '';
+ my $eff =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
+ my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
+ my $role =&Apache::lonxml::get_param('role', $parstack,$safeeval,undef,1);
+ my $type =&Apache::lonxml::get_param('type', $parstack,$safeeval,undef,1);
+
+ my ($dom,$crs,$sec,$separator);
+ if ($type eq 'user') {
+ ($dom,$crs,$sec)=split(m{/},$realm);
+ $crs = &LONCAPA::clean_username($crs);
+ $separator = '/';
+ } else {
+ ($dom,$crs,$sec)=split(/\_/,$realm);
+ $crs = &LONCAPA::clean_courseid($crs);
+ $separator = '_';
+ }
+ $dom = &LONCAPA::clean_domain($dom);
+
+ $sec =~s/\W//;
+ $realm = $dom;
+ if ($crs =~ /\S/) { $realm .= $separator.$crs; }
+ if ($sec =~ /\S/) { $realm .= $separator.$sec; }
+ $role=~s/\W//g;
+
+ if ($target eq 'web') {
+ my $args='';
+ if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
+ if ($args eq '') {
+ &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
+ } else {
+ $currentstring = $token->[4];
+ }
+ }
+ if ($target eq 'meta') {
+ $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
+ }
+ return $currentstring;
+}
+
+sub end_accessrule {
+ my ($target,$token,$tagstack,$parstack,$parser) = @_;
+ my $currentstring = '';
+ if ($target eq 'web') {
+ my $args='';
+ if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
+ if ($args ne '') {
+ $currentstring = $token->[4];
}
-#--------------------------------------------------------------------------- <sub> tag
- sub start_sub {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "\$_{ ";
- }
- return $currentstring;
- }
- sub end_sub {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= " }\$";
- }
- return $currentstring;
+ }
+ return $currentstring;
+}
+
+sub generate_css_links {
+ my $links;
+ my $css_href = &Apache::lonnet::EXT('resource.0.cssfile');
+ if ($css_href =~ /\S/) {
+ &Apache::lonxml::extlink($css_href);
+ $links .=
+ '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />';
+ }
+ return $links;
+}
+
+#-- <body> tag (end tag required)
+sub start_body {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+
+ if ($target eq 'web' || $target eq 'webgrade') {
+ if ($Apache::lonhomework::parsing_a_problem) {
+ &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
+ return '';
+ }
+
+ if (&is_inside_of($tagstack, "head")) {
+ &end_head(@_);
}
-#--------------------------------------------------------------------------- <sup> tag
- sub start_sup {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "\$^{ ";
- }
- return $currentstring;
- }
- sub end_sup {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= " }\$";
- }
- return $currentstring;
+
+ my $extra_head = &generate_css_links();
+
+ $currentstring =
+ &Apache::loncommon::start_page($Apache::londefdef::title,
+ $Apache::londefdef::head
+ .$extra_head,
+ {'add_entries' => $token->[2],
+ 'no_title' => 1,
+ 'force_register' => 1});
+
+ if ($env{'request.state'} ne 'published') {
+ $currentstring.=&Apache::lonmenu::constspaceform();
+ $currentstring.=&Apache::londefdef::edit_controls();
+ }
+ $currentstring.=&Apache::lonxml::message_location();
+ } elsif ($target eq 'tex') {
+ $currentstring = '\begin{document}';
+ }
+ return $currentstring;
+}
+
+sub edit_controls {
+ my $result .= (<<EDITBUTTON);
+<form method="post">
+<input type="submit" name="editmode" accesskey="e" value="Edit" />
+</form>
+<br />
+EDITBUTTON
+ return $result;
+}
+
+sub end_body {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # Close off unclosed <p>
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';
+ }
+ return $currentstring;
+}
+
+# \begin{center} causes a new paragprah spacing that looks odd inside
+# of a table cell. Same at the end of a \center but with a slightly
+# larger space .. hence center_correction and center_end_correction.
+#
+sub center_correction { return '\vspace*{-6 mm}'; }
+sub center_end_correction { return '\vspace*{-7 mm}'; }
+
+#-- <center> tag (end tag required)
+sub start_center {
+ my ($target,$token,$tagstack) = @_;
+ my $currentstring = &end_p(); # Close off any prior para.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ if (&is_inside_of($tagstack, "table")) {
+ $currentstring .= ¢er_correction();
+ }
+ $currentstring .= '\begin{center}';
+ }
+ return $currentstring;
+}
+
+sub end_center {
+ my ($target,$token,$tagstack) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring = '\end{center}';
+ if (&is_inside_of($tagstack, "table")) {
+ $currentstring .= ¢er_end_correction();
}
-#---------------------------------------------------------------------------- <hr> tag
- sub start_hr {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "\\hline ";
- }
- return $currentstring;
- }
- sub end_hr {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- }
- return $currentstring;
- }
-#----------------------------------------------------------------------------- <a> tag
- sub start_a {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- }
- return $currentstring;
- }
- sub end_a {
- my ($target,$token,$stackref) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- my $tempor_var = $stackref->[$#$stackref];
- if (index($tempor_var,'name') != -1 ) {
- $tempor_var =~ s/name=([^,]*),/$1/g;
- $currentstring .= " \\label{$tempor_var}";
- } elsif (index($tempor_var,'href') != -1 ) {
- $tempor_var =~ s/href=([^,]*),/$1/g;
- $currentstring .= " \\ref{$tempor_var}";
- }
- }
- return $currentstring;
+ }
+ return $currentstring;
+}
+
+#-- <b> tag (end tag required)
+# NOTE: In TeX mode disables internal <p>
+sub start_b {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ &disable_para();
+ $currentstring .= '\textbf{';
+ }
+ return $currentstring;
+}
+
+sub end_b {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ &enable_para();
+ $currentstring = '}';
+ }
+ return $currentstring;
+}
+
+#-- <strong> tag (end tag required)
+# NOTE: in TeX mode disables internal <p>
+sub start_strong {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ &disable_para();
+ $currentstring = '\textbf{';
+ }
+ return $currentstring;
+}
+
+sub end_strong {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ &enable_para();
+ $currentstring = '}';
+ }
+ return $currentstring;
+}
+
+#-- <h1> tag (end tag required)
+sub start_h1 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # Close off any prior para.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ my $pre;
+ my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
+ if ($align eq 'center') {
+ $pre='\begin{center}';
+ } elsif ($align eq 'left') {
+ $pre='\rlap{';
+ } elsif ($align eq 'right') {
+ $pre=' \hfill \llap{';
+ }
+ my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+ if (not defined $TeXsize) {$TeXsize="large";}
+ $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
+ } elsif ($target eq 'meta') {
+ $currentstring.='<subject>';
+ &start_output($target);
+ }
+ return $currentstring;
+}
+
+sub end_h1 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ my $post='\vskip 0 mm ';
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $post='\end{center}';
+ } elsif ($align eq 'left') {
+ $post='} \hfill'.'\vskip 0 mm ';
+ } elsif ($align eq 'right') {
+ $post='}'.'\vskip 0 mm ';
+ }
+ $currentstring .= '}}'.$post;
+ } elsif ($target eq 'meta') {
+ &end_output($target);
+ $currentstring='</subject>';
+ }
+ return $currentstring;
+}
+
+#-- <h2> tag
+sub start_h2 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # Close off any prior para.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ my $pre;
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $pre='\begin{center}';
+ } elsif ($align eq 'left') {
+ $pre='\rlap{';
+ } elsif ($align eq 'right') {
+ $pre=' \hfill \llap{';
+ }
+ my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+ if (not defined $TeXsize) {$TeXsize="large";}
+ $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
+ }
+ return $currentstring;
+}
+
+sub end_h2 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ my $post='\vskip 0 mm ';
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $post='\end{center}';
+ } elsif ($align eq 'left') {
+ $post='} \hfill'.'\vskip 0 mm ';
+ } elsif ($align eq 'right') {
+ $post='}'.'\vskip 0 mm ';
+ }
+ $currentstring .= '}}'.$post;
+ }
+ return $currentstring;
+}
+
+#-- <h3> tag
+sub start_h3 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # Close off any prior para.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ my $pre;
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $pre='\begin{center}';
+ } elsif ($align eq 'left') {
+ $pre='\rlap{';
+ } elsif ($align eq 'right') {
+ $pre=' \hfill \llap{';
+ }
+ my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+ if (not defined $TeXsize) {$TeXsize="large";}
+ $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
+ }
+ return $currentstring;
+}
+
+sub end_h3 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ my $post='\vskip 0 mm ';
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $post='\end{center}';
+ } elsif ($align eq 'left') {
+ $post='} \hfill'.'\vskip 0 mm ';
+ } elsif ($align eq 'right') {
+ $post='}'.'\vskip 0 mm ';
+ }
+ $currentstring .= '}}'.$post;
+ }
+ return $currentstring;
+}
+
+#-- <h4> tag
+sub start_h4 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # Close off any prior para.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ my $pre;
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $pre='\begin{center}';
+ } elsif ($align eq 'left') {
+ $pre='\rlap{';
+ } elsif ($align eq 'right') {
+ $pre=' \hfill \llap{';
+ }
+ my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+ if (not defined $TeXsize) {$TeXsize="large";}
+ $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
+ }
+ return $currentstring;
+}
+
+sub end_h4 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ my $post='\vskip 0 mm ';
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $post='\end{center}';
+ } elsif ($align eq 'left') {
+ $post='} \hfill'.'\vskip 0 mm ';
+ } elsif ($align eq 'right') {
+ $post='}'.'\vskip 0 mm ';
+ }
+ $currentstring .= '}}'.$post;
+ }
+ return $currentstring;
+}
+
+#-- <h5> tag
+sub start_h5 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # Close off any prior paras.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ my $pre;
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $pre='\begin{center}';
+ } elsif ($align eq 'left') {
+ $pre='\rlap{';
+ } elsif ($align eq 'right') {
+ $pre=' \hfill \llap{';
+ }
+ my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+ if (not defined $TeXsize) {$TeXsize="large";}
+ $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
+ }
+ return $currentstring;
+}
+
+sub end_h5 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ my $post='\vskip 0 mm ';
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $post='\end{center}';
+ } elsif ($align eq 'left') {
+ $post='} \hfill'.'\vskip 0 mm ';
+ } elsif ($align eq 'right') {
+ $post='}'.'\vskip 0 mm ';
+ }
+ $currentstring .= '}}'.$post;
+ }
+ return $currentstring;
+}
+
+#-- <h6> tag
+sub start_h6 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # Close off any prior paras.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ my $pre;
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $pre='\begin{center}';
+ } elsif ($align eq 'left') {
+ $pre='\rlap{';
+ } elsif ($align eq 'right') {
+ $pre=' \hfill \llap{';
+ }
+ my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+ if (not defined $TeXsize) {$TeXsize="large";}
+ $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{';
+ }
+ return $currentstring;
+}
+
+sub end_h6 {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ my $post='\vskip 0 mm ';
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $post='\end{center}';
+ } elsif ($align eq 'left') {
+ $post='} \hfill'.'\vskip 0 mm ';
+ } elsif ($align eq 'right') {
+ $post='}'.'\vskip 0 mm ';
+ }
+ $currentstring .= '}}'.$post;
+ }
+ return $currentstring;
+}
+
+#--- <cite> tag (end tag required)
+sub start_cite {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\textit{';
+ }
+ return $currentstring;
+}
+
+sub end_cite {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ return $currentstring;
+}
+
+#-- <i> tag (end tag required)
+sub start_i {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\textit{';
+ }
+ return $currentstring;
+}
+
+sub end_i {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ return $currentstring;
+}
+
+#-- <address> tag (end tag required)
+sub start_address {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\textit{';
+ }
+ return $currentstring;
+}
+
+sub end_address {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ return $currentstring;
+}
+
+#-- <dfn> tag (end tag required)
+sub start_dfn {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\textit{';
+ }
+ return $currentstring;
+}
+
+sub end_dfn {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ return $currentstring;
+}
+
+#-- <tt> tag (end tag required)
+sub start_tt {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\texttt{';
+ }
+ return $currentstring;
+}
+
+sub end_tt {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ return $currentstring;
+}
+
+#-- <kbd> tag (end tag required)
+sub start_kbd {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\texttt{';
+ }
+ return $currentstring;
+}
+
+sub end_kbd {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ return $currentstring;
+}
+
+#-- <code> tag (end tag required)
+sub start_code {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\texttt{';
+ }
+ return $currentstring;
+}
+
+sub end_code {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ return $currentstring;
+}
+
+#-- <em> tag (end tag required)
+sub start_em {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\emph{';
+ }
+ return $currentstring;
+}
+
+sub end_em {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ return $currentstring;
+}
+
+#-- <q> tag (end tag required)
+sub start_q {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\emph{';
+ }
+ return $currentstring;
+}
+
+sub end_q {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ return $currentstring;
+}
+
+# <p> is a bit strange since it does not require a closing </p>
+# However in latex, we must often output closing stuff to end
+# environments and {}'s etc. Therefore we do all the work
+# of figuring out the ending strings in the start tag processing,
+# and provide a mechanism to output the stop text external
+# to tag processing.
+#
+{
+
+ my $closing_string = ''; # String required to close <p>
+
+# Some tags are <p> fragile meaning that <p> inside of them
+# does not work within TeX mode. This is managed via the
+# counter below:
+#
+
+ my $para_disabled = 0;
+
+sub disable_para {
+ $para_disabled++;
+}
+sub enable_para {
+ $para_disabled--;
+}
+
+
+#-- <p> tag (end tag optional)
+#optional attribute - align="center|left|right"
+sub start_p {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= &end_p(); # close off prior para if in progress.
+ $currentstring .= $token->[4];
+ if (! ($currentstring =~ /\//)) {
+ $closing_string = '</p>'; # Deal correctly with <p /> e.g.
}
-#---------------------------------------------------------------------------- <li> tag
- sub start_li {
- my ($target,$token,$stackref) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- } elsif ($target eq 'tex') {
- my $tempor_var = $stackref->[$#$stackref-1];
- if (index($tempor_var,'circle') != -1 ) {
- $currentstring .= " \\item[o] ";
- } elsif (index($tempor_var,'square') != -1 ) {
- $currentstring .= " \\item[$\Box$] ";
- } else {
- $currentstring .= " \\item ";
- }
- }
- return $currentstring;
- }
- sub end_li {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- }
- return $currentstring;
- }
-#----------------------------------------------------------------------------- <u> tag
- sub start_u {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring .= "{\\underline ";
- }
- return $currentstring;
- }
- sub end_u {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring .= $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring .= " }";
- }
- return $currentstring;
+ } elsif ($target eq 'tex' && !$para_disabled) {
+
+ $currentstring .= &end_p(); # close off prior para if in progress.
+ my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($align eq 'center') {
+ $currentstring .='\begin{center}\par ';
+ $closing_string = '\end{center}';
+ if (&is_inside_of($tagstack, "table")) {
+ $currentstring = ¢er_correction().$currentstring;
+ }
+ } elsif ($align eq 'right') {
+ $currentstring.="\n".'{\flushright ';
+# $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
+ $closing_string= "}\n";
+ } elsif ($align eq 'left') {
+ $currentstring.= "\n".'{\flushleft ';
+# $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
+ $closing_string = "}\n";
+ } else {
+ $currentstring.='\par ';
+ if (&is_inside_of($tagstack, 'table')) {
+ $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
+ } else {
+ $closing_string = '\strut\\\\\strut ';
+ }
+ }
+
+ }
+ return $currentstring;
+}
+#
+# End paragraph processing just requires that we output the
+# closing string that was saved and blank it.
+sub end_p {
+ # Note only 'tex' mode uses disable_para and enable_para
+ # so we don't need to know the target in the check below:
+
+ if (!$para_disabled) {
+ my $current_string = $closing_string;
+ $closing_string = ''; # Not in a para anymore.
+ return $current_string;
+ } else {
+ return '';
+ }
+
+}
+}
+#-- <br> tag (end tag forbidden)
+sub start_br {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ my @tempo=@$tagstack;
+ my $signal=0;
+ # Not going to factor this to is_inside_of since that would require
+ # multiple stack traversals.
+ #
+ for (my $i=$#tempo;$i>=0;$i--) {
+ if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
+ ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul')) {
+ $signal=1;
+ }
+ if (($tempo[$i] eq 'td') || ($tempo[$i] eq 'th')) {
+ $signal = 1;
+ }
+ }
+ if ($signal != 1) {
+ $currentstring .= '\strut \\\\ \strut ';
+ }
+
+ }
+ return $currentstring;
+}
+
+sub end_br {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <big> tag (end tag required)
+sub start_big {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '{\large ';
+ }
+ return $currentstring;
+}
+
+sub end_big {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ return $currentstring;
+}
+
+#-- <small> tag (end tag required)
+sub start_small {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '{\footnotesize ';
+ }
+ return $currentstring;
+}
+
+sub end_small {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}';
+ }
+ return $currentstring;
+}
+
+#-- <basefont> tag (end tag forbidden)
+sub start_basefont {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
+ if (defined $basesize) {
+ $currentstring = '{\\'.$basesize.' ';
+ }
+ }
+ return $currentstring;
+}
+
+sub end_basefont {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
+ if (defined $basesize) {
+ $currentstring = '}';
+ }
+ }
+ return $currentstring;
+}
+
+#-- <font> tag (end tag required)
+sub start_font {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
+ if ($face!~/symbol/i) {
+ if (($env{'browser.fontenhance'} eq 'on') ||
+ ($env{'browser.blackwhite'} eq 'on')) { return ''; }
+ }
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
+ if (defined $fontsize) {
+ $currentstring = '{\\'.$fontsize.' ';
+ }
+ }
+ return $currentstring;
+}
+
+sub end_font {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
+ if (defined $fontsize) {
+ $currentstring = '}';
+ }
+ }
+ return $currentstring;
+}
+
+#-- <strike> tag (end tag required)
+sub start_strike {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ &Apache::lonxml::startredirection();
+ }
+ return $currentstring;
+}
+
+sub end_strike {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring=&Apache::lonxml::endredirection();
+ $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
+ $currentstring=~s/^\s*(\S)/\\underline\{$1/;
+ $currentstring=~s/(\S)\s*$/$1\}/;
+ }
+ return $currentstring;
+}
+
+#-- <s> tag (end tag required)
+sub start_s {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ &Apache::lonxml::startredirection();
+ }
+ return $currentstring;
+}
+
+sub end_s {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring=&Apache::lonxml::endredirection();
+ $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
+ $currentstring=~s/^\s*(\S)/\\underline\{$1/;
+ $currentstring=~s/(\S)\s*$/$1\}/;
+ }
+ return $currentstring;
+}
+
+#-- <sub> tag (end tag required)
+sub start_sub {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
+ }
+ return $currentstring;
+}
+
+sub end_sub {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}}';
+ }
+ return $currentstring;
+}
+
+#-- <sup> tag (end tag required)
+sub start_sup {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
+ }
+ return $currentstring;
+}
+
+sub end_sup {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '}}';
+ }
+ return $currentstring;
+}
+
+#-- <hr> tag (end tag forbidden)
+sub start_hr {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # End enclosing para.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+
+ # <hr /> can't be inside of <sup><sub> thank you LaTeX.
+ #
+ my $restart_sub = 0;
+ my $restart_sup = 0;
+
+ # Since <sub> and <sup> are simple tags it's ok to turn off/on
+ # using the start_ stop_ functions.. those tags only care about
+ # $target.
+
+ if (&is_inside_of($tagstack, "sub")) {
+ $restart_sub = 1;
+ $currentstring .= &end_sub($target, $token, $tagstack,
+ $parstack, $parser, $safeeval);
+ }
+ if (&is_inside_of($tagstack, "sup")) {
+ $restart_sup = 1;
+ $currentstring .= &end_sup($target, $token, $tagstack,
+ $parstack, $parser, $safeeval);
+ }
+
+ my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
+ if (defined $LaTeXwidth) {
+ if ($LaTeXwidth=~/^%/) {
+ 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 ';
+ # Turn stuff back on that we can't be inside of.
+
+ if ($restart_sub) {
+ $currentstring .= &start_sub($target, $token, $tagstack,
+ $parstack, $parser, $safeeval);
+ }
+ if ($restart_sup) {
+ $currentstring .= &start_sup($target, $token, $tagstack,
+ $parstack, $parser, $safeeval);
+ }
+ }
+ return $currentstring;
+}
+
+sub end_hr {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <div> tag (end tag required)
+{
+
+# Since div can be nested, the stack below is used
+# in 'tex' mode to store the ending strings
+# for the div stack.
+
+ my @div_end_stack;
+
+sub start_div {
+ my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
+ my $currentstring = &end_p(); # Close enclosing para.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ }
+ if ($target eq 'tex') {
+ # 4 possible alignments: left, right, center, and -missing-.
+ # If inside a table row, we must let the table logic
+ # do the alignment, however.
+ #
+
+ my $endstring = '';
+
+ my $align = lc(&Apache::lonxml::get_param('align', $parstack,
+ $safeeval, undef, 1));
+ if ($align eq 'center') {
+ $currentstring .= '\begin{center}';
+ $endstring = '\end{center}';
+ if (&is_inside_of($tagstack, "table")) {
+ $currentstring = ¢er_correction().$currentstring;
+ $endstring .= ¢er_end_correction();
+ }
+ }
+ elsif ($align eq 'right') {
+ $currentstring .= '\begin{flushright}';
+ $endstring .= '\end{flushright}';
+ } elsif ($align eq 'left') {
+ $currentstring .= '\begin{flushleft}';
+ $endstring = '\end{flushleft}';
+ } else {
+
+ }
+ $currentstring .= "\n"; # For human readability.
+ $endstring = "\n$endstring\n"; # For human readability
+ push(@div_end_stack, $endstring);
+ }
+ return $currentstring;
+}
+
+sub end_div {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ }
+ if ($target eq 'tex') {
+ my $endstring = pop @div_end_stack;
+ $currentstring .= $endstring;
+ }
+ return $currentstring;
+}
+}
+
+#-- <a> tag (end tag required)
+sub start_a {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
+ undef,1);
+ $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
+ }
+ return $currentstring;
+}
+
+sub end_a {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ }
+ if ($target eq 'tex') {
+ my $href =
+ &Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
+ my $name =
+ &Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
+ my $uriprint =
+ &Apache::lonxml::get_param('uriprint',$parstack,$safeeval,undef,1);
+ my $anchorprint =
+ &Apache::lonxml::get_param('anchorprint',$parstack,$safeeval,undef,1);
+ if (($href =~ /\S/) && ($uriprint=~/^on|uriprint|yes|1$/i)) {
+ $href =~ s/([^\\])%/$1\\\%/g;
+ # Substitute special symbols... and allow line breaks at each /
+ #
+ $href = &Apache::lonxml::latex_special_symbols($href);
+ $href =~ s/\//\/\\-/g; # Map / to /\- to allow hyphenation.
+ $currentstring .= ' ({\tt URI:'.$href.'})';
+ } elsif (($name =~ /\S/) && ($anchorprint=~/^on|anchorprint|yes|1$/i)) {
+ $currentstring .= ' ({\tt Anchor:'.&Apache::lonxml::latex_special_symbols($name).'})';
+ } else {
+ $currentstring.='';
+ }
+ }
+ return $currentstring;
+}
+
+#-- <li> tag (end tag optional)
+sub start_li {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
+ my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
+ #FIXME need to support types i and I
+ if ($type=~/disc/) {
+ $currentstring .= ' \item[$\bullet$] ';
+ } elsif ($type=~/circle/) {
+ $currentstring .= ' \item[$\circ$] ';
+ } elsif ($type=~/square/) {
+ $currentstring .= ' \item[$\diamond$] ';
+ } elsif ($type eq '1') {
+ $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
+ } elsif ($type eq 'A') {
+ $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
+ } elsif ($type eq 'a') {
+ $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
+ } elsif ($value ne '') {
+ $currentstring .= ' \item['.$value.'] ';
+ } else {
+ $currentstring .= ' \item ';
+ }
+ $Apache::londefdef::list_index++;
+ }
+ return $currentstring;
+}
+
+sub end_li {
+ my ($target,$token) = @_;
+ my $currentstring = &end_p(); # In case there's a <p> in the <li>
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <u> tag (end tag required)
+sub start_u {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ &Apache::lonxml::startredirection();
+ }
+ return $currentstring;
+}
+
+sub end_u {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring=&Apache::lonxml::endredirection();
+ $currentstring=~s/(\S)(\s+)(\S)/$1\}$2\\underline\{$3/g;
+ $currentstring=~s/^\s*(\S)/\\underline\{$1/;
+ $currentstring=~s/(\S)\s*$/$1\}/;
+ }
+ return $currentstring;
+}
+
+#-- <ul> tag (end tag required)
+sub start_ul {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # Close off enclosing list.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
+ $Apache::londefdef::list_index=0;
+ if ($TeXtype eq 'disc') {
+ $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
+ '\renewcommand{\labelitemii}{$\bullet$}'.
+ '\renewcommand{\labelitemiii}{$\bullet$}'.
+ '\renewcommand{\labelitemiv}{$\bullet$}';
+ } elsif ($TeXtype eq 'circle') {
+ $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
+ '\renewcommand{\labelitemii}{$\circ$}'.
+ '\renewcommand{\labelitemiii}{$\circ$}'.
+ '\renewcommand{\labelitemiv}{$\circ$}';
+ } elsif ($TeXtype eq 'square') {
+ $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
+ '\renewcommand{\labelitemii}{$\diamond$}'.
+ '\renewcommand{\labelitemiii}{$\diamond$}'.
+ '\renewcommand{\labelitemiv}{$\diamond$}';
+ }
+ $currentstring .= '\strut \begin{itemize}';
+ }
+ return $currentstring;
+}
+
+sub end_ul {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
+ '\renewcommand{\labelitemii}{$\bullet$}'.
+ '\renewcommand{\labelitemiii}{$\bullet$}'.
+ '\renewcommand{\labelitemiv}{$\bullet$}\strut ';
+ }
+ return $currentstring;
+}
+
+#-- <menu> tag (end tag required)
+sub start_menu {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring = " \\begin{itemize} ";
+ }
+ return $currentstring;
+}
+
+sub end_menu {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring = " \\end{itemize}";
+ }
+ return $currentstring;
+}
+
+#-- <dir> tag (end tag required)
+sub start_dir {
+ my ($target,$token) = @_;
+ my $currentstring = &end_p(); # In case there's a <p> prior to the list.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= " \\begin{itemize} ";
+ }
+ return $currentstring;
+}
+
+sub end_dir {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring = " \\end{itemize}";
+ }
+ return $currentstring;
+}
+
+#-- <ol> tag (end tag required)
+sub start_ol {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # In case there's a <p> prior to the list.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $Apache::londefdef::list_index=0;
+ my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
+ if ($type eq '1') {
+ $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
+ '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
+ '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
+ '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
+ } elsif ($type eq 'A') {
+ $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
+ '\renewcommand{\labelenumii}{\Alph{enumii}.}'.
+ '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
+ '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
+ } elsif ($type eq 'a') {
+ $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
+ '\renewcommand{\labelenumii}{\alph{enumii}.}'.
+ '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
+ '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
+ } elsif ($type eq 'i') {
+ $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
+ '\renewcommand{\labelenumii}{\roman{enumii}.}'.
+ '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
+ '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
+ } elsif ($type eq 'I') {
+ $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
+ '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
+ '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
+ '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
+ }
+ $currentstring .= '\strut \begin{enumerate}';
+ }
+ return $currentstring;
+}
+
+sub end_ol {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
+ '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
+ '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
+ '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
+ }
+ return $currentstring;
+}
+
+#-- <dl> tag (end tag required)
+sub start_dl {
+ my ($target,$token) = @_;
+ my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\begin{description}';
+ $Apache::londefdef::DL++;
+ push(@Apache::londefdef::description,[]);
+ $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
+ $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
+ $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
+ }
+ return $currentstring;
+}
+
+sub end_dl {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
+ if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
+ foreach my $element (@{$Apache::londefdef::description[-1]}) {
+ $currentstring.=' '.$element.' ';
+ }
+ pop(@Apache::londefdef::description);
+ $currentstring.='\end{description}';
+ delete($Apache::londefdef::DD[$Apache::londefdef::DL]);
+ delete($Apache::londefdef::DT[$Apache::londefdef::DL]);
+ delete($Apache::londefdef::seenDT[$Apache::londefdef::DL]);
+ $Apache::londefdef::DL--;
+ }
+ return $currentstring;
+}
+
+#-- <dt> tag (end tag optional)
+sub start_dt {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring='';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
+ if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
+ &Apache::lonxml::startredirection();
+ $Apache::londefdef::DT[-1]++;
+ $Apache::londefdef::seenDT[-1]=1;
+ }
+ return $currentstring;
+}
+
+sub end_dt {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ if ($Apache::londefdef::DT[-1]) {
+ my $data=&item_cleanup();
+ push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
+ $Apache::londefdef::DT[-1]--;
+ }
+ }
+ return $currentstring;
+}
+
+sub item_cleanup {
+ my $item=&Apache::lonxml::endredirection();
+ $item=~s/\\begin{center}//g;
+ $item=~s/\\end{center}//g;
+ return $item;
+}
+
+#-- <dd> tag (end tag optional)
+sub start_dd {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
+ if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
+ if (!$Apache::londefdef::seenDT[-1]) {
+ push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
+ }
+ push(@{$Apache::londefdef::description[-1]},'');
+ $Apache::londefdef::description[-1]->[-1].=' \strut ';
+ $Apache::londefdef::DD[-1]++;
+ &Apache::lonxml::startredirection();
+ }
+ return $currentstring;
+}
+
+sub end_dd {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $Apache::londefdef::description[-1]->[-1].=
+ &Apache::lonxml::endredirection().' \vskip 0mm ';
+ $Apache::londefdef::DD[-1]--;
+ }
+ return $currentstring;
+}
+
+#-- <table> tag (end tag required)
+# <table> also ends any prior <p> that is not closed.
+# but, unless I allow <p>'s to nest, that's the
+# only way I could think of to allow <p> in
+# <tr> <th> bodies
+#
+#list of supported attributes: border,width,TeXwidth
+sub start_table {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $textwidth = '';
+ my $currentstring = &end_p();
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ push(@Apache::londefdef::table, {});
+ $Apache::londefdef::table[-1]{'row_number'} = -1;
+ #maximum table's width (default coincides with text line length)
+ if ($#Apache::londefdef::table==0) {
+ $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
+ $textwidth=~/(\d+\.?\d*)/;
+ $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
+ } else {
+ if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
+ #the maximum width of nested table is determined by LATeX width of parent cell
+ $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}];
+ } else {
+ #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
+ $textwidth=$Apache::londefdef::table[-2]{'width'};
+ for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
+ $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
+ }
+ }
+ }
+
+ # width either comes forced from the TeXwidth or the width parameters.
+ # in either case it can be a percentage or absolute width.
+ # in the width case we ignore absolute width
+ my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
+ if (!defined($TeXwidth)) {
+ my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
+ $safeeval,undef,1);
+ if ($htmlwidth =~ /%/) {
+ $TeXwidth = $htmlwidth;
+ } else {
+ $TeXwidth = $textwidth;
+ }
+ }
+ # if the width is specified as a % it is converted to an absolute width.
+ # otherwise.. just plugged right in the hash
+
+ if ($TeXwidth=~/%/) {
+ $TeXwidth=~/(\d+)/;
+ $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
+ } else {
+ $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
+ }
+ # In the end, however the table width cannot be wider than $textwidth...
+
+ if ($Apache::londefdef::table[-1]{'width'} > $textwidth) {
+ $Apache::londefdef::table[-1]{'width'} = $textwidth;
+ }
+ #table's border
+ my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
+ my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
+ unless (defined $border) { $border = 0; }
+ if ($border) {
+ $Apache::londefdef::table[-1]{'hinc'} = '\hline ';
+ $Apache::londefdef::table[-1]{'vinc'} = '&';
+ $Apache::londefdef::table[-1]{'vvinc'} = '|';
+ } else {
+ $Apache::londefdef::table[-1]{'hinc'} = '';
+ $Apache::londefdef::table[-1]{'vinc'} = '&';
+ $Apache::londefdef::table[-1]{'vvinc'} = '';
+ }
+ if ($#Apache::londefdef::table==0) {
+ # Note that \newline seems to destroy the alignment envs.
+ # $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
+ $Apache::londefdef::table[-1]{'output'}='\strut'.'\\\\'."\n".'\strut\setlength{\tabcolsep}{1 mm}';
+ }
+ $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
+ $Apache::londefdef::table[-1]{'TeXlen'}=[];
+ $Apache::londefdef::table[-1]{'objectlen'}=[];
+ $Apache::londefdef::table[-1]{'objectsignal'}=[];
+ $Apache::londefdef::table[-1]{'maxlen'}=[];
+ $Apache::londefdef::table[-1]{'minlen'}=[];
+ $Apache::londefdef::table[-1]{'content'}=[];
+ $Apache::londefdef::table[-1]{'align'}=[];
+ $currentstring.=' \keephidden{NEW TABLE ENTRY}';
+
+
+ }
+ return $currentstring;
+}
+
+sub end_table {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
+ my $inmemory = '';
+ my $output = '';
+ my $WARNING='';
+ #width of columns from TeXwidth attributes
+
+ # Protect against unbalanced </table> tag.
+
+ if (scalar(@Apache::londefdef::table) > 0) {
+
+ 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
+ my $avg_max;
+ my $avg_min;
+ my $counter_cols = $Apache::londefdef::table[-1]{'counter_columns'};
+ for (my $jn=0;$jn<=$counter_cols; $jn++) {
+ my ($localmin,$localmax)=(0,0);
+ for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
+ if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
+ $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
+ }
+ if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
+ $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
+ }
+ }
+ push @min_len, $localmin;
+ push @max_len, $localmax;
+ $avg_max = $localmax + $avg_max;
+ $avg_min = $localmin + $avg_min;
+ }
+ # Does not really matter what the average max/min are if there are no cols.
+ # and this prevents div 0 in that case.
+
+ if ($counter_cols != 0) {
+ $avg_max = $avg_max/$counter_cols;
+ $avg_min = $avg_min/$counter_cols;
+ }
+
+
+ # I don't think the below is needed.. but just in case:
+
+ if ($avg_min > $avg_max) {
+ my $temp = $avg_min;
+ $avg_min = $avg_max;
+ $avg_max = $temp;
+ }
+
+
+ for (my $jn=0;$jn<=$counter_cols;$jn++) {
+ my $localmin=0,;
+ for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
+ if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
+ $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
+ }
+ }
+ if ($max_len[$jn]<$localmin) {
+ $max_len[$jn]=$localmin;
+ $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
+ }#object size is bigger
+ if ($min_len[$jn]<$localmin) {
+ $min_len[$jn]=$localmin;
+ $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
+ }#object size is bigger
+ if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
+ $min_len[$jn]=0;
+ $max_len[$jn]=0;
+ }
+ # Spans seem to be really bothered by max/min = 0. So if we have one
+ # make it an average joe max/min.
+
+ if ($max_len[$jn] == 0) {
+ $max_len[$jn] = $avg_max;
+ }
+ if ($min_len[$jn] == 0) {
+ $min_len[$jn] = $avg_min;
+ }
+
+ }
+ #final adjustment of column width
+ my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
+ my @adjust=();
+ #step 1. adjustment by maximum value
+ my $space_needed=0;
+ for (my $jn=0;$jn<=$#max_len;$jn++) {
+ $space_needed=$space_needed+$max_len[$jn];
+ }
+ if ($space_needed<=$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_needed=0;
+ for (my $jn=0;$jn<=$#min_len;$jn++) {
+ $space_needed+=$min_len[$jn];
+ }
+ if ($space_needed>$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_needed-$available_space)/$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_needed;
+ my $acsessive=0;
+ for (my $jn=0;$jn<=$#min_len;$jn++) {
+ $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
+ if ($adjust[$jn]>$max_len[$jn]) {
+ $fwidth[$jn]=$max_len[$jn];
+ $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
+ $adjust[$jn]=0;
+
+ }
+ }
+ if ($acsessive>0) {
+ #we have an excess of space and can redistribute it
+ my $notempty_columns=0;
+ for (my $jn=0;$jn<=$#min_len;$jn++) {
+ if ($adjust[$jn]!=0) {
+ $notempty_columns++;
+ }
+ }
+ my $per_column=$acsessive/$notempty_columns;
+ for (my $jn=0;$jn<=$#min_len;$jn++) {
+ if ($adjust[$jn]!=0) {
+ $adjust[$jn]+=$per_column;
+ $fwidth[$jn]=$adjust[$jn];
+ }
+ }
+ } else {
+ for (my $jn=0;$jn<=$#min_len;$jn++) {
+ $fwidth[$jn]=$adjust[$jn];
+ }
+ }
+ }
+ }
+ # use all available width or specified width as if not specified,
+ # the specified width gets defaulted to the available width.
+
+ my $current=0;
+ for (my $i=0;$i<=$#fwidth;$i++) {
+ $current+=$fwidth[$i];
+ }
+ if ($current == 0) {
+ $current = $Apache::londefdef::table[-1]{'width'};
+ }
+ my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
+ for (my $i=0;$i<=$#fwidth;$i++) {
+ $fwidth[$i]*=$coef;
+ }
+ #removing of empty columns if allowed
+ my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
+ if ($permission eq 'yes') {
+ my @cleaned_table=();
+ my @cleaned_header=();
+ my $colind=0;
+ for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
+ if ($fwidth[$jn]!=0) {
+ #we need to copy column
+ for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
+ $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
+ $cleaned_header[$colind]=$fwidth[$jn];
+ }
+ $colind++;
+ }
+ }
+ $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
+ @fwidth=@cleaned_header;
+ }
+
+
+ #construct header of the table
+ my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
+ for (my $in=0;$in<=$#fwidth;$in++) {
+ $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
+ }
+ $header_of_table .= '}';
+
+ #fill the table
+ for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
+ my $have_rowspan = 0;
+ for (my $jn=0;$jn<=$#fwidth;$jn++) {
+
+ #-----------------------------------------------------------
+ # I think this order of doing things will ensure that
+ # single rowspan, columspan and combined row/colspans will
+ # work correctly. LaTeX is delicate here.
+ # RF.
+
+ # Start a rowspan if necessary:
+
+ my $primary_col_width = $fwidth[$jn]; # Width of primary column.
+ my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
+ my $colspan = $Apache::londefdef::table[-1]{'colspan'}[$in][$jn];
+ #
+ # Do the appropriate magic if this has a colspan
+ #
+
+ my $border_char = "";
+ if ($border) {
+ $border_char = "|";
+ }
+ my $spanwidth = 0;
+ if ($colspan > 1) {
+ for (my $spancol = $jn; $spancol < $jn + $colspan; $spancol++) {
+ $spanwidth += $fwidth[$spancol];
+ }
+ $output .= '\multicolumn{'.
+ $colspan
+ ."}";
+ if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
+ $output .= '{'.$border_char.'c'.$border_char.'}{';
+ } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
+ $output .= '{'.$border_char.'r'.$border_char.'}{';
+ }
+ else {
+ $output .= '{'.$border_char."p{$spanwidth mm}".$border_char.'}{';
+ }
+
+ } else {
+ $spanwidth = $primary_col_width; # If no span width will be just colwidth
+ }
+
+ # Rowspan... if colspan is 1, and there's an alignment we'll need
+ # to kick in a multicolumn in order to get the alignment spec.
+ # this must precede the multirow or LaTex gets quite upset.
+ # Naturally if colspan > 1 we've already done that above ^
+ #
+ my $multirow_aligned = 0;
+ if ($rowspan > 1) {
+ if ($colspan == 1) {
+ if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
+ $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
+ $multirow_aligned = 1;
+ } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
+ $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
+ $multirow_aligned = 1;
+ }
+ }
+ $have_rowspan++;
+ if ($multirow_aligned) {
+ $output .= '\multirow{'.$rowspan.'}[0]{*}{';
+ } else {
+ $output .= '\multirow{'.$rowspan."}[0]{$spanwidth mm}{";
+ }
+
+ $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
+ s{^\s*\\par\s*}{};
+ $Apache::londefdef::table[-1]{'content'}[$in][$jn] =~
+ s{\s*\\vskip\s*0pt\s*$}{};
+
+ #
+ # If we did not throw in a multicolumn to align, then add
+ # an extra {
+ # so we close correctly without having to keep additional state
+ # around
+ #
+ if (!$multirow_aligned) {
+ $output .= '{';
+ }
+ }
+ if (($rowspan eq '^') || ($rowspan eq '_')) {
+ $have_rowspan++;
+ }
+ #--------------------------------------------------------------
+
+
+ # For right and center alignment of single cells.
+ # we are going to use a multicolumn with a span of 1 to specify alignment.
+ #
+ if ($colspan == 1 && $rowspan == 1) {
+ if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
+ $output .= '\multicolumn{1}{'.$border_char.'c'.$border_char.'}{';
+ } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
+ $output .= '\multicolumn{1}{'.$border_char.'r'.$border_char.'}{';
+ }
+ }
+
+ $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
+
+ if (($colspan == 1 && $rowspan == 1) &&
+ (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
+ ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r'))) {
+ $output .= '}';
+ }
+
+ # Close off any open multirow:
+
+ if ($rowspan > 1) {
+ $output .= '}}';
+ }
+ # Close off the colspan...
+ #
+ if ($colspan > 1) {
+ $output .= '}';
+ $jn += $colspan-1; # Adjust for number of rows really left.
+ }
+ if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
+ }
+ # If have_rowspan > 0, and borders are on, then
+ # we need to do more than put an \hline at the bottom of row.
+ # we need to do the appropriate \cline to ensure that
+ # the spanned rows don't have \hlines through them.
+
+ if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
+ $output .= ' \\\\ ';
+ for (my $jn=0; $jn<=$#fwidth;$jn++) {
+ my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
+ if ($rowspan ne "^") {
+ if (($rowspan <= 1) || ($rowspan eq '_')) {
+ my $column = $jn+1;
+ $output .= '\cline{'.$column.'-'.$column.'} ';
+ }
+ }
+ }
+
+ } else {
+ $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
+ }
+ }
+ # Note that \newline destroys alignment env's produced by e.g. <div>
+ # $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
+ $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut'.'\\\\'."\n".'\strut ';
+ if ($#Apache::londefdef::table > 0) {
+ my $inmemory = $Apache::londefdef::table[-1]{'output'};
+ # Figure out max/and min width by summing us and then
+ # apply that to the current column of the table we nest in
+ # if it's larger than the current width or the current width
+ # is undefined.
+ #
+ my $min_nested_width = 0;
+ my $max_nested_width = 0;
+ for (my $col = 0; $col <= $Apache::londefdef::table[-1]{'counter_columns'}; $col++) {
+ $min_nested_width += $min_len[$col];
+ $max_nested_width += $max_len[$col];
+
+ }
+ # Fudge in an extra 5 mm for borders etc:
+
+ $min_nested_width += 5;
+ $max_nested_width += 5;
+
+ my $outer_column = $Apache::londefdef::table[-2]{'counter_columns'};
+ my $outer_row = $Apache::londefdef::table[-2]{'row_number'};
+ if ($min_nested_width > $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column]) {
+ $Apache::londefdef::table[-2]{'minlen'}[$outer_row][$outer_column] = $min_nested_width;
+ }
+ if ($max_nested_width > $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column]) {
+ $Apache::londefdef::table[-2]{'maxlen'}[$outer_row][$outer_column] = $max_nested_width;
+ }
+
+ pop @Apache::londefdef::table;
+ push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
+ } else {
+ $currentstring .= $Apache::londefdef::table[-1]{'output'};
+ pop @Apache::londefdef::table;
+ undef @Apache::londefdef::table;
+ }
+ }
+ }
+ return $currentstring;
+}
+
+#-- <tr> tag (end tag optional)
+sub start_tr {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ $Apache::londefdef::table[-1]{'row_number'}++;
+ my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+ if ($alignchar ne '') {
+ push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
+ } else {
+ push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
+ }
+ push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
+ #
+ # Need to save the number of table columns to preserve the max # columns.
+ #
+ $Apache::londefdef::table[-1]{'prior_columns'} = $Apache::londefdef::table[-1]{'counter_columns'};
+ $Apache::londefdef::table[-1]{'counter_columns'} = -1;
+ push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
+ push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
+ push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
+ push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
+ push @ {$Apache::londefdef::table[-1]{'content'}}, [];
+ }
+ return $currentstring;
+}
+
+sub end_tr {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # Close any pending <p> in the row.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ if ($Apache::londefdef::TD_redirection) {
+ &end_td_tex($parstack,$parser,$safeeval);
+ }
+ # Counter columns must be the maximum number of columns seen
+ # in the table so far so:
+ if ($Apache::londefdef::table[-1]{'prior_columns'} > $Apache::londefdef::table[-1]{'counter_columns'}) {
+ $Apache::londefdef::table[-1]{'counter_columns'} = $Apache::londefdef::table[-1]{'prior_columns'};
+ }
+
+
+
+ }
+ return $currentstring;
+}
+
+#-- <td> tag (end tag optional)
+sub start_td {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ $Apache::londefdef::TD_redirection = 1;
+ &tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
+ }
+ return $currentstring;
+}
+
+sub tag_check {
+ my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my @ar=@$parstack;
+ for (my $i=$#ar-1;$i>=0;$i--) {
+ if (lc($$tagstack[$i]) eq $good_tag) {
+ &start_td_tex($parstack,$parser,$safeeval);
+ last;
+ } elsif (lc($$tagstack[$i]) eq $bad_tag) {
+ splice @ar, $i+1;
+ &end_td_tex(\@ar,$parser,$safeeval);
+ &start_td_tex($parstack,$parser,$safeeval);
+ last;
+ }
+ }
+ return '';
+}
+
+sub start_td_tex {
+ my ($parstack,$parser,$safeeval) = @_;
+ my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
+ if ($alignchar eq '') {
+ $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
+ }
+ push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
+ $Apache::londefdef::table[-1]{'counter_columns'}++;
+ my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
+ if (defined $TeXwidth) {
+ my $current_length=&recalc($TeXwidth);
+ $current_length=~/(\d+\.?\d*)/;
+ push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
+ }
+ &Apache::lonxml::startredirection();
+ return '';
+}
+
+sub end_td_tex {
+ my ($parstack,$parser,$safeeval) = @_;
+ my $current_row = $Apache::londefdef::table[-1]{'row_number'};
+ my $current_column = $Apache::londefdef::table[-1]{'counter_columns'};
+ my $data = &Apache::lonxml::endredirection();
+
+ # The rowspan array of the table indicates which cells are part of a span.
+ # n indicates the start of a span set of n rows.
+ # ^ indicates a cell that continues a span set.
+ # _ indicates the cell is at the bottom of a span set.
+ # If this and subsequent cells are part of a rowspan, we must
+ # push along the row until we find one that is not.
+
+ while ((defined $Apache::londefdef::table[-1]{'rowspan'}[$current_row] [$current_column])
+ && ($Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column] =~ /[\^\_]/)) {
+ # Part of a span.
+ push @ {$Apache::londefdef::table[-1]{'content'}[-1]}, '';
+ $current_column++;
+ }
+ $Apache::londefdef::table[-1]{'counter_columns'} = $current_column;
+
+
+ # Get the column and row spans.
+ # Colspan can be done via \multicolumn if I can figure out the data structs.
+
+ my $colspan = &Apache::lonxml::get_param('colspan', $parstack, $safeeval, undef, 0);
+ if (!$colspan) {
+ $colspan = 1;
+ }
+
+ my $rowspan = &Apache::lonxml::get_param('rowspan', $parstack, $safeeval, undef, 0);
+ if (!$rowspan) {
+ $rowspan = 1;
+ }
+
+
+
+ for (my $c = 0; $c < $colspan; $c++) {
+ $Apache::londefdef::table[-1]{'rowspan'}[$current_row][$current_column+$c] = $rowspan;
+ for (my $i = 1; $i < $rowspan; $i++) {
+ $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '^';
+ if ($i == ($rowspan-1)) {
+ $Apache::londefdef::table[-1]{'rowspan'}[$current_row+$i][$current_column+$c] = '_';
+ }
+ }
+ }
+
+ my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
+ if (defined $TeXwidth) {
+ for (my $c = 0; $c < $colspan; $c++) {
+ push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ }
+ } else {
+ if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
+ my $garbage_data=$data;
+ my $fwidth=0;
+ while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
+ my $current_length=&recalc($1);
+ $current_length=~/(\d+\.?\d*)/;
+ if ($fwidth<$1) {$fwidth=$1;}
+ $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
+ }
+ while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
+ my $current_length=$1;
+ if ($fwidth<$current_length) {$fwidth=$current_length;}
+ $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
+ }
+ for (my $c = 0; $c < $colspan; $c++) {
+ push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
+ push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ }
+ } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) {
+ my $garbage_data=$data;
+ my $fwidth=0;
+ while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
+ my $current_length=&recalc($1);
+ $current_length=~/(\d+\.?\d*)/;
+ if ($fwidth<$1) {$fwidth=$1;}
+ $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
+ }
+ while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
+ my $current_length=&recalc($1);
+ $current_length=~/(\d+\.?\d*)/;
+ if ($fwidth<$1) {$fwidth=$1;}
+ $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
+ }
+ for (my $c = 0; $c < $colspan; $c++) {
+ push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
+ push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ }
+ $data=~s/\\\\\s*$//;
+ } else {
+ $data=~s/^\s+(\S.*)/$1/;
+ $data=~s/(.*\S)\s+$/$1/;
+ $data=~s/(\s)+/$1/;
+ my ($current_length,$min_length)=(0,0);
+ if ($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;}
+ }
+ }
+ for (my $c = 0; $c < $colspan; $c++) {
+ push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
+ push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
+ }
+ }
+ }
+ # Substitute all of the tables nested in this cell in their appropriate places.
+
+
+ my $nested_count = $#{$Apache::londefdef::table[-1]{'include'}}; # This one is constant...
+ for (my $in=0; $in<=$nested_count; $in++) {
+ my $nested = shift @{$Apache::londefdef::table[-1]{'include'}};
+ $nested =~ s/\\end\{tabular\}\\strut\\\\/\\end\{tabular\}/;
+ # $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
+ $data =~ s/\\keephidden\{NEW TABLE ENTRY\}/$nested/;
+
+ }
+ # Should be be killing off the 'include' elements as they're used up?
+
+ push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
+
+
+
+
+ # the colspan array will indicate how many columns will be spanned by this
+ # cell..this requires that counter_columns also be adjusted accordingly
+ # so that the next bunch of text goes in the right cell. Note that since
+ # counter_columns is incremented in the start_td_tex, we adjust by colspan-1.
+ #
+
+ $Apache::londefdef::table[-1]{'counter_columns'} += $colspan -1;
+ for (my $i = 0; $i < ($colspan -1); $i++) {
+ push @ {$Apache::londefdef::table[-1]{'content'}[-1] },'';
+ }
+ for (my $r = 0; $r < $rowspan; $r++) {
+ $Apache::londefdef::table[-1]{'colspan'}[$current_row+$r][$current_column] = $colspan;
+ # Put empty text in spanned cols.
+
+ }
+
+
+
+ return '';
+}
+
+sub end_td {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $Apache::londefdef::TD_redirection =0;
+ &end_td_tex($parstack,$parser,$safeeval);
+ }
+ return $currentstring;
+}
+
+#-- <th> tag (end tag optional)
+sub start_th {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ $Apache::londefdef::TD_redirection = 1;
+ &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
+ }
+ return $currentstring;
+}
+
+sub tagg_check {
+ my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my @ar=@$parstack;
+ for (my $i=$#ar-1;$i>=0;$i--) {
+ if (lc($$tagstack[$i]) eq $good_tag) {
+ &start_th_tex($parstack,$parser,$safeeval);
+ last;
+ } elsif (lc($$tagstack[$i]) eq $bad_tag) {
+ splice @ar, $i+1;
+ &end_th_tex(\@ar,$parser,$safeeval);
+ &start_th_tex($parstack,$parser,$safeeval);
+ last;
}
-#---------------------------------------------------------------------------- <ul> tag
- sub start_ul {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring = " \\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}";
- }
- return $currentstring;
- }
-#-------------------------------------------------------------------------- <menu> tag
- sub start_menu {
- my ($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 $currentstring;
- }
-#--------------------------------------------------------------------------- <dir> tag
- sub start_dir {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($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 $currentstring;
- }
-#---------------------------------------------------------------------------- <ol> tag
- sub start_ol {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring = " \\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}";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <dl> tag
- sub start_dl {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring = " \\begin{description} ";
- }
- return $currentstring;
- }
- sub end_dl {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring = " \\end{description}";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <dt> tag
- sub start_dt {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring = "\\item[ ";
- }
- return $currentstring;
- }
- sub end_dt {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring = "]";
- }
- return $currentstring;
- }
-#---------------------------------------------------------------------------- <dd> tag
- sub start_dd {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- }
- return $currentstring;
- }
- sub end_dd {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- }
- return $currentstring;
- }
-#------------------------------------------------------------------------- <table> tag
- sub start_table {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[4];
- } elsif ($target eq 'tex') {
- $currentstring = " \\begin{tabular} ";
- }
- return $currentstring;
- }
- sub end_table {
- my ($target,$token) = @_;
- my $currentstring = '';
- if ($target eq 'web') {
- $currentstring = $token->[2];
- } elsif ($target eq 'tex') {
- $currentstring = " \\end{tabular}";
- }
- return $currentstring;
+ }
+ return '';
+}
+
+sub start_th_tex {
+ my ($parstack,$parser,$safeeval) = @_;
+ my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
+ if ($alignchar eq '') {
+ $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
+ }
+ push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
+ $Apache::londefdef::table[-1]{'counter_columns'}++;
+ my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
+ if (defined $TeXwidth) {
+ my $current_length=&recalc($TeXwidth);
+ $current_length=~/(\d+\.?\d*)/;
+ push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
+ }
+ &Apache::lonxml::startredirection();
+ return '';
+}
+
+sub end_th_tex {
+ my ($parstack,$parser,$safeeval) = @_;
+ my $current_row = $Apache::londefdef::table[-1]{'row_number'};
+ my $data=&Apache::lonxml::endredirection();
+ my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
+ if (defined $TeXwidth) {
+ push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ } else {
+ if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
+ my $garbage_data=$data;
+ my $fwidth=0;
+ while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
+ my $current_length=&recalc($1);
+ $current_length=~/(\d+\.?\d*)/;
+ if ($fwidth<$1) {$fwidth=$1;}
+ $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
+ }
+ while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
+ my $current_length=$1;
+ if ($fwidth<$current_length) {$fwidth=$current_length;}
+ $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
+ }
+ push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
+ push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ } else {
+ $data=~s/^\s+(\S.*)/$1/;
+ $data=~s/(.*\S)\s+$/$1/;
+ $data=~s/(\s)+/$1/;
+ my ($current_length,$min_length)=(0,0);
+ if ($data=~/\\vskip/) {
+ my $newdata=$data;
+ $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
+ my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
+ foreach my $elementdata (@newdata) {
+ my $lengthnewdata=2.5*&LATEX_length($elementdata);
+ if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
+ my @words=split(/ /,$elementdata);
+ foreach my $word (@words) {
+ my $lengthword=2.5*&LATEX_length($word);
+ if ($min_length<$lengthword) {$min_length=$lengthword;}
+ }
+ }
+ } else {
+ $current_length=2.5*&LATEX_length($data);
+ my @words=split(/ /,$data);
+ foreach my $word (@words) {
+ my $lengthword=2*&LATEX_length($word);
+ if ($min_length<$lengthword) {$min_length=$lengthword;}
+ }
+ }
+ push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
+ push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
+ push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
+ }
+ }
+ for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {
+ $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
+ }
+ #make data bold
+ $data='\textbf{'.$data.'}';
+ push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
+ return'';
+}
+
+sub end_th {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # Close any open <p> in the row.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $Apache::londefdef::TD_redirection =0;
+ &end_th_tex($parstack,$parser,$safeeval);
+ }
+ return $currentstring;
+}
+
+#-- <img> tag (end tag forbidden)
+#
+# Render the <IMG> tag.
+# <IMG> has the following attributes (in addition to the
+# standard HTML ones:
+# TeXwrap - Governs how the tex target will try to wrap text around
+# horizontally aligned images.
+# TeXwidth - The width of the image when rendered for print (mm).
+# TeXheight - The height of the image when rendered for print (mm)
+# (Note there seems to also be support for this as a % of page size)
+#
+sub start_img {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
+ my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
+ undef,1);
+ if (! $src &&
+ ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
+ ) {
+ my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
+ return '';
+ }
+ &Apache::lonxml::extlink($src);
+ my $currentstring = '';
+ my $scaling = .3;
+
+ # Render unto browsers that which are the browser's...
+
+ if ($target eq 'web' || $target eq 'webgrade') {
+ if ($env{'browser.imagesuppress'} ne 'on') {
+ my $enc = ('yes' eq
+ lc(&Apache::lonxml::get_param('encrypturl',$parstack,
+ $safeeval)));
+ $currentstring.=&Apache::lonenc::encrypt_ref($token,{'src'=>$src},
+ $enc);
+ } else {
+ my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
+ undef,1);
+ if (!$alttag) {
+ $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
+ $src);
+ }
+ $currentstring.='[IMAGE: '.$alttag.']';
+ }
+
+ # and render unto TeX that which is LaTeX
+
+ } elsif ($target eq 'tex') {
+ #
+ # The alignment will require some superstructure to be put around
+ # the \includegraphics stuff. At present we can only partially
+ # simulate the alignments offered by html.
+ #
+ #
+ my $align = lc(&Apache::lonxml::get_param('align',
+ $parstack,
+ $safeeval,
+ undef,1));
+ if(!$align) {
+ $align = "bottom"; # This is html's default so it's ours too.
+ }
+ #
+ &Apache::lonxml::debug("Alignemnt = $align");
+ # LaTeX's image/text wrapping is really bad since it wants to
+ # make figures float.
+ # The user has the optional parameter (applicable only to l/r
+ # alignment to use the picins/parpic directive to get wrapped text
+ # this is also imperfect.. that's why we give them a choice...
+ # so they can't yell at us for our choice.
+ #
+ my $latex_rendering = &Apache::lonxml::get_param('TeXwrap',
+ $parstack,
+ $safeeval,
+ undef,0);
+ # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering");
+ if(!$latex_rendering) {
+ $latex_rendering = "texwrap";
+ }
+ # using texwrap inside a table does not work. So, if after all of this,
+ # texwrap is on, we turn it off if we detect we're in a table:
+ #
+ if (($latex_rendering eq 'texwrap') && &is_inside_of($tagstack, "table")) {
+ $latex_rendering = 'parpic';
+ }
+
+ # &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
+
+ #if original gif/jpg/png file exist do following:
+ my $origsrc=$src;
+ my ($path,$file) = &get_eps_image($src);
+ # &Apache::lonnet::logthis("Image source: $src result: $path $file");
+ $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
+ &Apache::lonxml::debug("path = $path file = $file src = $src");
+ if (-e $src) {
+ &Apache::lonxml::debug("$src exists");
+ my ($height_param,$width_param)=
+ &image_size($origsrc,0.3,$parstack,$safeeval);
+ my $size;
+ if ($width_param) { $size.='width='.$width_param.' mm,'; }
+ if ($height_param) { $size.='height='.$height_param.' mm]'; }
+ # Default size if not able to extract that (e.g. eps image).
+
+ # &Apache::lonnet::logthis("Size = $size");
+
+ $size='['.$size;
+ $size=~s/,$/]/;
+ $currentstring .= '\graphicspath{{'.$path.'}}'
+ .'\includegraphics'.$size.'{'.$file.'} ';
+ my $closure;
+ ($currentstring, $closure) = &align_latex_image($align,
+ $latex_rendering,
+ $currentstring,
+ $width_param,
+ $height_param);
+ $currentstring .= $closure;
+
+ } else {
+ &Apache::lonxml::debug("$src does not exist");
+ #original image file doesn't exist so check the alt attribute
+ my $alt =
+ &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
+ unless ($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') {
+ my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
+ $currentstring .=&Apache::edit::tag_start($target,$token);
+ $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
+ &Apache::edit::browse('src',undef,'alt',$only).' '.
+ &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',
+ ['', 'none','parbox', 'parpic', 'wrapfigure'], $token, 2);
+ $currentstring .=&Apache::edit::select_arg('Encrypt URL:','encrypturl',
+ ['no','yes'], $token, 2);
+ $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
+ my $src= &Apache::lonxml::get_param('src',$parstack,$safeeval);
+ my $alt= &Apache::lonxml::get_param('alt',$parstack,$safeeval);
+ my $width= &Apache::lonxml::get_param('width',$parstack,$safeeval);
+ my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
+
+ if ($token->[2]{'src'}=~/\$/) {
+ $currentstring.='Variable image source';
+ } else {
+ $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
+ if ($width) { $currentstring.=' width="'.$width.'" '; }
+ if ($height) { $currentstring.=' height="'.$height.'" '; }
+ $currentstring .= ' />';
+ }
+ } elsif ($target eq 'modified') {
+ my ($osrc,$owidth,$oheight)=
+ ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
+ my $ctag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'src','alt','align',
+ 'TeXwidth','TeXheight', 'TeXwrap',
+ 'width','height','encrypturl');
+ my ($nsrc,$nwidth,$nheight)=
+ ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
+ my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
+ &image_replication($loc);
+ my ($iwidth,$iheight);
+ if (-e $loc) {
+ my $image = Image::Magick->new;
+ $image->Read($loc);
+ ($iwidth, $iheight) = ($image->Get('width'),
+ $image->Get('height'));
+ }
+ if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
+ # changed image or no size specified,
+ # if they didn't explicitly change the
+ # width or height use the ones from the image
+ if ($iwidth && $iheight) {
+ if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
+ $token->[2]{'width'} = $iwidth;$ctag=1;
+ }
+ if ($oheight == $nheight || (!$nwidth && !$nheight)) {
+ $token->[2]{'height'}=$iheight;$ctag=1;
+ }
+ }
+ }
+ my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
+ # if we don't have a width or height
+ if ($iwidth && $cwidth && !$cheight) {
+ $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
+ }
+ if ($iheight && $cheight && !$cwidth) {
+ $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
+ }
+ if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
+ }
+
+ return $currentstring;
+}
+
+sub end_img {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring = '';
+ }
+ return $currentstring;
+}
+
+#-- <applet> tag (end tag required)
+sub start_applet {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+
+ my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
+ &Apache::lonxml::extlink($code);
+ my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
+ undef,1);
+ &Apache::lonxml::extlink($archive);
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ if ($env{'browser.appletsuppress'} ne 'on') {
+ $currentstring = &Apache::lonenc::encrypt_ref($token,
+ {'code'=>$code,
+ 'archive'=>$archive}
+ );
+ } else {
+ my $alttag= &Apache::lonxml::get_param('alt',$parstack,
+ $safeeval,undef,1);
+ unless ($alttag) {
+ $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
+ $code);
+ }
+ $currentstring='[APPLET: '.$alttag.']';
}
+ } elsif ($target eq 'tex') {
+ # Turn off some stuff we can't be inside thank you LaTeX
+
+
+ my $restart_sub = 0;
+ my $restart_sup = 0;
+
+ # Since <sub> and <sup> are simple tags it's ok to turn off/on
+ # using the start_ stop_ functions.. those tags only care about
+ # $target.
+
+ if (&is_inside_of($tagstack, "sub")) {
+ $restart_sub = 1;
+ $currentstring .= &end_sub($target, $token, $tagstack,
+ $parstack, $parser, $safeeval);
+ }
+ if (&is_inside_of($tagstack, "sup")) {
+ $restart_sup = 1;
+ $currentstring .= &end_sup($target, $token, $tagstack,
+ $parstack, $parser, $safeeval);
+ }
+
+ # Now process the applet; just replace it with its alt attribute.
+
+ my $alttag= &Apache::lonxml::get_param('alt',$parstack,
+ $safeeval,undef,1);
+ unless ($alttag) {
+ 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}';
+
+ # Turn stuff back on that we can't be inside of.
+
+ if ($restart_sub) {
+ $currentstring .= &start_sub($target, $token, $tagstack,
+ $parstack, $parser, $safeeval);
+ }
+ if ($restart_sup) {
+ $currentstring .= &start_sup($target, $token, $tagstack,
+ $parstack, $parser, $safeeval);
+ }
+ }
+ return $currentstring;
+}
+
+sub end_applet {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ }
+ return $currentstring;
+}
+
+#-- <embed> tag (end tag optional/required)
+sub start_embed {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
+ &Apache::lonxml::extlink($src);
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ if ($env{'browser.embedsuppress'} ne 'on') {
+ $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
+ } else {
+ my $alttag=&Apache::lonxml::get_param
+ ('alt',$parstack,$safeeval,undef,1);
+ unless ($alttag) {
+ $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
+ }
+ $currentstring='[EMBED: '.$alttag.']';
+ }
+ } elsif ($target eq 'tex') {
+ }
+ return $currentstring;
+}
+
+sub end_embed {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ }
+ return $currentstring;
+}
+
+#-- <param> tag (end tag forbidden)
+sub start_param {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ if (&Apache::lonxml::get_param('name',$parstack,
+ $safeeval,undef,1)=~/^cabbase$/i) {
+ my $value=&Apache::lonxml::get_param('value',$parstack,
+ $safeeval,undef,1);
+ &Apache::lonxml::extlink($value);
+ }
+
+ my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
+ &Apache::lonxml::extlink($src);
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ my %toconvert;
+ my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
+ if ($src) { $toconvert{'src'}= $src; }
+ my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval,
+ undef,1);
+ if ($name=~/^cabbase$/i) {
+ $toconvert{'value'}=&Apache::lonxml::get_param('value',$parstack,
+ $safeeval,undef,1);
+ }
+ $currentstring = &Apache::lonenc::encrypt_ref($token,\%toconvert);
+ } elsif ($target eq 'tex') {
+ }
+ return $currentstring;
+}
+
+sub end_param {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ }
+ return $currentstring;
+}
+
+#-- <allow> tag
+sub start_allow {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
+ &Apache::lonxml::extlink($src);
+
+ if ($target eq 'tex') { &image_replication($src); }
+ my $result;
+ if ($target eq 'edit') {
+ $result .=&Apache::edit::tag_start($target,$token);
+ $result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
+ $result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'src');
+ if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
+ }
+ return $result;
+}
+
+sub end_allow {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
+ return '';
+}
+
+#-- Frames (end tag required)
+#-- <frameset>
+sub start_frameset {
+ my ($target,$token) = @_;
+ my $currentstring = ''; # Close any pending para.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring =
+ &Apache::loncommon::start_page($Apache::londefdef::title,
+ $Apache::londefdef::head,
+ {'add_entries' => $token->[2],
+ 'no_title' => 1,
+ 'force_register' => 1,
+ 'frameset' => 1,});
+
+ }
+ return $currentstring;
+}
+
+sub end_frameset {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <xmp> (end tag required)
+sub start_xmp {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\begin{verbatim}';
+ }
+ return $currentstring;
+}
+
+sub end_xmp {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\end{verbatim}';
+ }
+ return $currentstring;
+}
+
+#-- <pre> (end tag required)
+sub start_pre {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # close off pending <p>
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\begin{verbatim}';
+ &Apache::lonxml::disable_LaTeX_substitutions();
+ }
+ return $currentstring;
+}
+
+sub end_pre {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring .= '\end{verbatim}';
+ &Apache::lonxml::enable_LaTeX_substitutions();
+ }
+ return $currentstring;
+}
+
+#-- <insert>
+sub start_insert {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
+ $currentstring .= '<b>'.$display.'</b>';;
+ }
+ return $currentstring;
+}
+
+sub end_insert {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= '';
+ }
+ return $currentstring;
+}
+
+#-- <externallink>
+sub start_externallink {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
+ $currentstring .= '<b>'.$display.'</b>';;
+ }
+ return $currentstring;
+}
+
+sub end_externallink {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= '';
+ }
+ return $currentstring;
+}
+
+#-- <blankspace heigth="">
+sub start_blankspace {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = &end_p(); # closes off any unclosed <p>
+ if ($target eq 'tex') {
+ my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
+ $currentstring .= '\vskip '.$howmuch.' ';
+ }
+ return $currentstring;
+}
+
+sub end_blankspace {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'tex') {
+ $currentstring .= '';
+ }
+ return $currentstring;
+}
+
+#-- <abbr> tag (end tag required)
+sub start_abbr {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_abbr {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <acronym> tag (end tag required)
+sub start_acronym {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_acronym {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <area> tag (end tag forbidden)
+sub start_area {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_area {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <base> tag (end tag forbidden)
+sub start_base {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_base {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <bdo> tag (end tag required)
+sub start_bdo {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_bdo {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <bgsound> tag (end tag optional)
+sub start_bgsound {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_bgsound {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <blink> tag (end tag required)
+sub start_blink {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_blink {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <blockquote> tag (end tag required)
+sub start_blockquote {
+ my ($target,$token) = @_;
+ my $currentstring = &end_p(); # Close any unclosed <p>
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ }
+ if ($target eq 'tex') {
+ $currentstring .= '\begin{quote}';
+ }
+ return $currentstring;
+}
+
+sub end_blockquote {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ if ($target eq 'tex') {
+ $currentstring = '\end{quote}';
+ }
+ return $currentstring;
+}
+
+#-- <button> tag (end tag required)
+sub start_button {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_button {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <caption> tag (end tag required)
+sub start_caption {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_caption {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <col> tag (end tag forbdden)
+sub start_col {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_col {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <colgroup> tag (end tag optional)
+sub start_colgroup {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_colgroup {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <del> tag (end tag required)
+sub start_del {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_del {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <fieldset> tag (end tag required)
+sub start_fieldset {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_fieldset {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <frame> tag (end tag forbidden)
+sub start_frame {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_frame {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <iframe> tag (end tag required)
+sub start_iframe {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_iframe {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <ins> tag (end tag required)
+sub start_ins {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_ins {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <isindex> tag (end tag forbidden)
+sub start_isindex {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_isindex {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <keygen> tag (end tag forbidden)
+sub start_keygen {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_keygen {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <label> tag
+sub start_label {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_label {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <layer> tag (end tag required)
+sub start_layer {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_layer {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <legend> tag (end tag required)
+sub start_legend {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_legend {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <link> tag (end tag forbidden)
+sub start_link {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
+ undef,1);
+ &Apache::lonxml::extlink($href);
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_link {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <marquee> tag (end tag optional)
+sub start_marquee {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_marquee {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <multicol> tag (end tag required)
+sub start_multicol {
+ my ($target,$token) = @_;
+ my $currentstring = &end_p(); # Close any pending <p>
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_multicol {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <nobr> tag (end tag required)
+sub start_nobr {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring='\mbox{';
+ }
+ return $currentstring;
+}
+
+sub end_nobr {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring='}';
+ }
+ return $currentstring;
+}
+
+#-- <noembed> tag (end tag required)
+sub start_noembed {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_noembed {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <noframes> tag (end tag required)
+sub start_noframes {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_noframes {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <nolayer> tag (end tag required)
+sub start_nolayer {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_nolayer {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <noscript> tag (end tag required)
+sub start_noscript {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_noscript {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <object> tag (end tag required)
+sub start_object {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_object {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <optgroup> tag (end tag required)
+sub start_optgroup {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_optgroup {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <samp> tag (end tag required)
+sub start_samp {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring='\texttt{';
+ }
+ return $currentstring;
+}
+
+sub end_samp {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring='}';
+ }
+ return $currentstring;
+}
+
+#-- <server> tag
+sub start_server {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_server {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <spacer> tag (end tag forbidden)
+sub start_spacer {
+ my ($target,$token) = @_;
+ my $currentstring = &end_p(); # Close off any open <p> tag.
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring .= $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_spacer {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <span> tag (end tag required)
+sub start_span {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_span {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <tbody> tag (end tag optional)
+sub start_tbody {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_tbody {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <tfoot> tag (end tag optional)
+sub start_tfoot {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_tfoot {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <thead> tag (end tag optional)
+sub start_thead {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_thead {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <var> tag
+sub start_var {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ } elsif ($target eq 'tex') {
+ $currentstring = '\textit{';
+ }
+ return $currentstring;
+}
+
+sub end_var {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ } elsif ($target eq 'tex') {
+ $currentstring = '}';
+ }
+ return $currentstring;
+}
+
+#-- <wbr> tag (end tag forbidden)
+sub start_wbr {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[4];
+ }
+ return $currentstring;
+}
+
+sub end_wbr {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = $token->[2];
+ }
+ return $currentstring;
+}
+
+#-- <hideweboutput> tag
+sub start_hideweboutput {
+ my ($target,$token) = @_;
+ if ($target eq 'web' || $target eq 'webgrade') {
+ &Apache::lonxml::startredirection();
+ }
+ return '';
+}
+
+sub end_hideweboutput {
+ my ($target,$token) = @_;
+ my $currentstring = '';
+ if ($target eq 'web' || $target eq 'webgrade') {
+ $currentstring = &Apache::lonxml::endredirection();
+ }
+ return '';
+}
+
+
+sub image_replication {
+ my $src = shift;
+ if (not -e $src) { &Apache::lonnet::repcopy($src); }
+ #replicates eps or ps
+ my $epssrc = my $pssrc = $src;
+ $epssrc =~ s/\.(gif|jpg|jpeg|png)$/.eps/i;
+ $pssrc =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
+ if (not -e $epssrc && not -e $pssrc) {
+ my $result=&Apache::lonnet::repcopy($epssrc);
+ if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
+ }
+ return '';
+}
+#
+# Get correct sizing parameter for an image given
+# it's initial ht. and wid. This allows sizing of
+# images that are generated on-the-fly (e.g. gnuplot)
+# as well as serving as a utility for image_size.
+#
+# Parameter:
+# height_param
+# width_param - Initial picture dimensions.
+# scaling - A scale factor.
+# parstack, - the current stack of tag attributes
+# from the xml parser
+# safeeval, - pointer to the safespace
+# depth, - from what level in the stack to look for attributes
+# (assumes -1 if unspecified)
+# cis - look for attrubutes case insensitively
+# (assumes false)
+#
+# Returns:
+# height, width - new dimensions.
+#
+sub resize_image {
+ my ($height_param, $width_param, $scaling,
+ $parstack, $safeeval, $depth, $cis) = @_;
+
+ # First apply the scaling...
+
+ $height_param = $height_param * $scaling;
+ $width_param = $width_param * $scaling;
+
+ #do we have any specified LaTeX size of the picture?
+ my $toget='TeXwidth';
+ if ($cis) {
+ $toget=lc($toget);
+ }
+ my $TeXwidth = &Apache::lonxml::get_param($toget,$parstack,
+ $safeeval,$depth,$cis);
+ $toget='TeXheight'; if ($cis) { $toget=lc($toget); }
+ my $TeXheight = &Apache::lonxml::get_param($toget,$parstack,
+ $safeeval,$depth,$cis);
+ #do we have any specified web size of the picture?
+ my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
+ $depth,1);
+ if ($TeXwidth) {
+ my $old_width_param=$width_param;
+ if ($TeXwidth=~/(\d+)\s*\%/) {
+ $width_param = $1*$env{'form.textwidth'}/100;
+ } else {
+ $width_param = $TeXwidth;
+ }
+ if ($TeXheight) {
+ $height_param = $TeXheight;
+ } elsif ($old_width_param) {
+ $height_param=$TeXwidth/$old_width_param*$height_param;
+ }
+ } elsif ($TeXheight) {
+ $height_param = $TeXheight;
+ if ($height_param) {
+ $width_param = $TeXheight/$height_param*$width_param;
+ }
+ } elsif ($width) {
+ my $old_width_param=$width_param;
+ $width_param = $width*$scaling;
+ if ($old_width_param) {
+ $height_param=$width_param/$old_width_param*$height_param;
+ }
+ }
+ if ($width_param > $env{'form.textwidth'}) {
+ my $old_width_param=$width_param;
+ $width_param =0.95*$env{'form.textwidth'};
+ if ($old_width_param) {
+ $height_param=$width_param/$old_width_param*$height_param;
+ }
+ }
+
+ return ($height_param, $width_param);
+}
+
+sub image_size {
+ my ($src,$scaling,$parstack,$safeeval,$depth,$cis)=@_;
+
+ #size of image from gif/jpg/jpeg/png
+ my $ressrc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
+ if (-e $ressrc) {
+ $src = $ressrc;
+ }
+ my $image = Image::Magick->new;
+ my $current_figure = $image->Read($src);
+ my $width_param = $image->Get('width');
+ my $height_param = $image->Get('height');
+ &Apache::lonxml::debug("Image magick says: $src : Height = $height_param width = $width_param");
+ undef($image);
+
+ ($height_param, $width_param) = &resize_image($height_param, $width_param,
+ $scaling, $parstack, $safeeval,
+ $depth, $cis);
+
+ return ($height_param, $width_param);
+}
+
+sub image_width {
+ my ($height, $width) = &image_size(@_);
+ return $width;
+}
+# Not yet 100% sure this is correct in all circumstances..
+# due to my uncertainty about mods to image_size.
+#
+sub image_height {
+ my ($height, $width) = &image_size(@_);
+ return $height;
+}
+
+sub get_eps_image {
+ my ($src)=@_;
+ my $orig_src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1], $src);
+
+ # In order to prevent the substitution of the alt text, we need to
+ # be sure the orig_src file is on system now so:
+
+ if (! -e $orig_src) {
+ &Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
+ }
+ &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
+ my ($spath, $sname, $sext) = &fileparse($src, qr/\.(gif|png|jpg|jpeg)/i);
+ $src=~s/\.(gif|png|jpg|jpeg)$/\.eps/i;
+ $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
+ &Apache::lonxml::debug("Filelocation gives: $src");
+ if (! -e $src) {
+ &Apache::lonxml::debug("$src does not exist");
+ if (&Apache::lonnet::repcopy($src) ne 'ok' ) {
+ &Apache::lonxml::debug("Repcopy of $src failed (1)");
+ #if replication failed try to find ps file
+ $src=~s/\.eps$/\.ps/;
+ &Apache::lonxml::debug("Now looking for $src");
+ #if no ps file try to replicate it.
+ my $didrepcopy = &Apache::lonnet::repcopy($src);
+ &Apache::lonxml::debug("repcopy of $src ... $didrepcopy");
+ if ( (not -e $src) ||
+ ($didrepcopy ne 'ok')) {
+ &Apache::lonxml::debug("Failed to find or replicate $src");
+
+ #if replication failed try to produce eps file dynamically
+ $src=~s/\.ps$/\.eps/;
+ my $temp_file;
+ open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
+ my $newsrc=$orig_src;
+ $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
+ &Apache::lonxml::debug("queueing $newsrc for dynamic eps production.");
+ print FILE ("$newsrc\n");
+ close(FILE);
+ $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
+ $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
+ if ($sext ne "") { # Put the ext. back in to uniquify.
+ $src =~ s/\.eps$/$sext.eps/;
+ }
+
+ }
+
+ }
+ } else {
+ # If the postscript file has spaces in its name,
+ # LaTeX will gratuitiously vomit. Therefore
+ # queue such files for copy with " " replaced by "_".
+ # printout.pm will know them by their .ps or .eps extensions.
+ my $newsrc = $orig_src;
+ $newsrc =~ s|(.*)/res/|/home/httpd/html/res/|;
+ open(FILE,">>/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat");
+ print FILE "$src\n";
+ close FILE;
+ $src=~s|/home/httpd/html/res|/home/httpd/prtspool|;
+ $src=~s|/home/([^/]*)/public_html/|/home/httpd/prtspool/$1/|;
+ }
+ my ($path,$file)=($src=~m|(.*)/([^/]*)$|);
+ $path =~ s/ /\_/g;
+ $file =~ s/ /\_/g;
+ &Apache::lonxml::debug("get_eps_image returning: $path / $file<BR />");
+ return ($path.'/',$file);
+}
+
+sub eps_generation {
+ my ($src,$file,$width_param) = @_;
+ my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
+ my $temp_file = Apache::File->new('>>'.$filename);
+ print $temp_file "$src\n";
+ my $newsrc = $src;
+ $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
+ $newsrc=~s{/home/httpd/html/res}{};
+ $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
+ $newsrc=~s{/\./}{/};
+ $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
+ if ($newsrc=~m{/home/httpd/lonUsers/}) {
+ $newsrc=~s{/home/httpd/lonUsers}{};
+ $newsrc=~s{/($LONCAPA::domain_re)/./././}{/$1/};
+ }
+ if ($newsrc=~m{/userfiles/}) {
+ return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
+ } else {
+ return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
+ }
+}
+
+sub file_path {
+ my $src=shift;
+ my ($file,$path);
+ if ($src =~ m!(.*)/([^/]*)$!) {
+ $file = $2;
+ $path = $1.'/';
+ }
+ return $file,$path;
+}
+# Converts a measurement in to mm from any of
+# the other valid LaTeX units of measure.
+# If the units of measure are missing from the
+# parameter, it is assumed to be in and returned
+# with mm units of measure
+sub recalc {
+ my $argument = shift;
+ if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
+ $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
+ my $value=$1;
+ my $units=$2;
+ if ($units eq 'cm') {
+ $value*=10;
+ } elsif ($units eq 'in') {
+ $value*=25.4;
+ } elsif ($units eq 'pc') {
+ $value*=(25.4*12/72.27);
+ } elsif ($units eq 'pt') {
+ $value*=(25.4/72.27);
+ }
+ return $value.' mm';
+}
+
+sub LATEX_length {
+ my $garbage=shift;
+ $garbage=~s/^\s+$//;
+ $garbage=~s/^\s+(\S.*)/$1/;#space before
+ $garbage=~s/(.*\S)\s+$/$1/;#space after
+ $garbage=~s/(\s)+/$1/;#only one space
+ $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
+ $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
+ $garbage=~s/([^\\])\$/$1/g;#$
+ $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
+ $garbage=~s/(\\alpha|\\beta|\\gamma|\\delta|\\epsilon|\\verepsilon|\\zeta|\\eta|\\theta|\\vartheta|\\iota|\\kappa|\\lambda|\\mu|\\nu|\\xi|\\pi|\\varpi|\\rho|\\varrho|\\sigma|\\varsigma|\\tau|\\upsilon|\\phi|\\varphi|\\chi|\\psi|\\omega|\\Gamma|\\Delta|\\Theta|\\Lambda|\\Xi|\\Pi|\\Sigma|\\Upsilon|\\Phi|\\Psi|\\Omega)/1/g;
+ $garbage=~s/(\\pm|\\mp|\\times|\\div|\\cdot|\\ast|\\star|\\dagger|\\ddagger|\\amalg|\\cap|\\cup|\\uplus|\\sqcap|\\sqcup|\\vee|\\wedge|\\oplus|\\ominus|\\otimes|\\circ|\\bullet|\\diamond|\\lhd|\\rhd|\\unlhd|\\unrhd|\\oslash|\\odot|\\bigcirc|\\Box|\\Diamond|\\bigtriangleup|\\bigtriangledown|\\triangleleft|\\triangleright|\\setminus|\\wr)/1/g;
+ $garbage=~s/(\\le|\\ll|\\leq|\\ge|\\geq|\\gg|\\neq|\\doreq|\\sim|\\simeq|\\subset|\\subseteq|\\sqsubset|\\sqsubseteq|\\in|\\vdash|\\models|\\supset|\\supseteq|\\sqsupset|\\sqsupseteq|\\ni|\\dash|\\perp|\\approx|\\cong|\\equiv|\\propto|\\prec|\\preceq|\\parallel|\\asymp|\\smile|\\frown|\\bowtie|\\succ|\\succeq|\\mid)/1/g;
+ $garbage=~s/(\\not<|\\\\not\\le|\\not\\prec|\\not\\preceq|\\not\\subset|\\not\\subseteq|\\not\\sqsubseteq|\\not\\in|\\not>|\\not\\ge|\\not\\succ|\\notsucceq|\\not\\supset|\\notsupseteq|\\not\\sqsupseteq|\\notin|\\not=|\\not\\equiv|\\not\\sim|\\not\\simeq|\\not\\approx|\\not\\cong|\\not\\asymp)/1/g;
+ $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/11/g;
+ $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/11/g;
+ $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
+ #remove some other LaTeX command
+ $garbage=~s|\\(\w+)\\|\\|g;
+ $garbage=~s|\\(\w+)(\s*)|$2|g;
+ $garbage=~s|\+|11|g;
+ my $value=length($garbage);
+ return $value;
+}
+
+# Wrap image 'stuff' inside of the LaTeX required to implement
+# alignment:
+# align_tex_image(align, latex_rendering, image)
+# Where:
+# align - The HTML alignment specification.
+# latex_rendering - rendering hint for latex.
+# image - The LaTeX needed to insert the image itsef.
+# width,height - dimensions of the image.
+# Returns:
+# The 1/2 wrapped image and the stuff required to close the
+# wrappage. This allows e.g. randomlabel to insert more stuff
+# into the closure.
+#
+sub align_latex_image {
+ my ($align, $latex_rendering, $image, $width, $height) = @_;
+ my $currentstring; # The 1/2 wrapped image.
+ my $closure; # The closure of the wrappage.
+
+ # if it's none just return it back
+ if ($latex_rendering eq 'none') {
+ return ($image,'');
+ }
+
+ # If there's an alignment specification we need to honor it here.
+ # For the horizontal alignments, we will also honor the
+ # value of the latex specfication. The default is parbox,
+ # and that's used for illegal values too.
+ #
+ # Even though we set a default alignment value, the user
+ # could have given us an illegal value. In that case we
+ # just use the default alignment of bottom..
+ $currentstring = "\n% figurewrapping \n";
+ if ($align eq "top") {
+ $currentstring .= '\raisebox{-'.$height.'mm}{'.$image;
+ $closure = '}';
+ } elsif (($align eq "center") || ($align eq "middle")) { # Being kind
+ my $offset = $height/2;
+ $currentstring .= '\raisebox{-'.$offset.'mm}{'.$image;
+ $closure = '}';
+ } elsif ($align eq "left") {
+ if ($latex_rendering eq "parpic") {
+ $currentstring .= '\parpic[l]{'.$image;
+ $closure = '}';
+ } elsif ($latex_rendering eq "parbox") {
+ $currentstring .= '\begin{minipage}[l]{'.$width.'mm}'
+ .$image;
+ $closure = '\end{minipage}';
+ } elsif ($latex_rendering eq "wrapfigure"
+ || $latex_rendering ne 'none') { # wrapfig render
+ $currentstring .=
+ '\begin{wrapfigure}{l}{'.$width.'mm}'
+ .'\scalebox{1.0}{'.$image;
+ $closure = '}\end{wrapfigure}';
+ }
+ } elsif ($align eq "right") {
+ if ($latex_rendering eq "parpic") {
+ $currentstring .= '\parpic[r]{'.$image;
+ $closure = '}';
+ } elsif ($latex_rendering eq "parbox") {
+ $currentstring .= '\begin{minipage}[r]{'.$width.'mm}'
+ .$image;
+ $closure = '\end{minipage}';
+ } elsif ($latex_rendering eq "wrapfigure"
+ || $latex_rendering ne 'none') { # wrapfig render
+ $currentstring .=
+ '\begin{wrapfigure}{r}{'.$width.'mm}'
+ .'\scalebox{1.0}{'.$image;
+ $closure = '}\end{wrapfigure}';
+ }
+ } else { # Bottom is also default.
+ # $currentstring = '\raisebox{'.$height.'mm}{'.$image.'}';
+ $currentstring .= "{$image";
+ $closure = '}';
+ }
+ $currentstring .= "\n% end wrappage\n";
+ $closure = "\n% Begin closure\n".$closure."\n% End closure\n";
+ return ($currentstring, $closure);
+}
+
+# is_inside_of $tagstack $tag
+# This sub returns true if the current state of Xml processing
+# is inside of the tag.
+# Parameters:
+# tagstack - The tagstack from the parser.
+# tag - The tag (without the <>'s.).
+# Sample usage:
+# if (is_inside_of($tagstack "table")) {
+# # I'm in a table....
+# }
+sub is_inside_of {
+ my ($tagstack, $tag) = @_;
+ my @stack = @$tagstack;
+ for (my $i = ($#stack - 1); $i >= 0; $i--) {
+ if ($stack[$i] eq $tag) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
1;
__END__