Diff for /loncom/xml/londefdef.pm between versions 1.207 and 1.390

version 1.207, 2004/04/01 16:19:13 version 1.390, 2008/08/18 10:19:59
Line 36 Line 36
 # The C source of the Code may not be distributed by the Licensee  # The C source of the Code may not be distributed by the Licensee
 # to any other parties under any circumstances.  # to any other parties under any circumstances.
 #  #
 #  
 # last modified 06/26/00 by Alexander Sakharuk  
 # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer  
 # 01/18 Alex Sakharuk  
   
 package Apache::londefdef;   package Apache::londefdef; 
   
 use Apache::lonnet();  use Apache::lonnet;
 use strict;  use strict;
 use Apache::lonxml;  use Apache::lonxml;
 use Apache::File();  use Apache::File();
 use Image::Magick;  use Image::Magick;
 use Apache::lonmenu();  use Apache::lonmenu();
 use Apache::lonmeta();  use Apache::lonmeta();
   use Apache::lonlocal;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
   use File::Basename;
   use LONCAPA();
   # use Data::Dumper;
   
 BEGIN {  BEGIN {
   
Line 59  BEGIN { Line 58  BEGIN {
   
 }  }
   
   #
   #   Dumps all elements of the table structure.
   #   Need this 'cause evidently when given an array, Data::Dumper only seems
   #   to dump element 0.
   #
   #sub debug_dump_table {
   #    my $lastrow = $#Apache::londefdef::table;
   #    &Apache::lonnet::logthis("Dumping table:  Last row index: $lastrow");
   #    my $row;
   #    for ($row =0; $row <= $lastrow; $row++ ) {
   # my $text = Dumper($Apache::londefdef::table[$row]);
   # &Apache::lonnet::logthis("table [ $row ]".$text);
   #    }
   #}
 sub initialize_londefdef {  sub initialize_londefdef {
     $Apache::londefdef::TD_redirection=0;      $Apache::londefdef::TD_redirection=0;
     @Apache::londefdef::table = ();      @Apache::londefdef::table = ();
     $Apache::londefdef::select=0;      $Apache::londefdef::select=0;
     @Apache::londefdef::description=();      undef(@Apache::londefdef::description);
     $Apache::londefdef::DD_redirection=0;      @Apache::londefdef::DD=(0);
     $Apache::londefdef::DT_redirection=0;      @Apache::londefdef::DT=(0);
       @Apache::londefdef::seenDT=(0);
       $Apache::londefdef::list_index=0;
       undef($Apache::londefdef::head);
       undef($Apache::londefdef::title);
 }  }
   
 #======================= TAG SUBROUTINES =====================  #======================= TAG SUBROUTINES =====================
Line 86  sub start_m { Line 103  sub start_m {
     my $currentstring = '';      my $currentstring = '';
     my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);      my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
     if ($target eq 'web' || $target eq 'analyze') {      if ($target eq 'web' || $target eq 'analyze') {
  $inside ='\\documentstyle{article}'.$inside;  
  &Apache::lonxml::debug("M is starting with:$inside:");   &Apache::lonxml::debug("M is starting with:$inside:");
  my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);   my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
  if ($eval eq 'on') {   if ($eval eq 'on') {
     $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);      $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
     #&Apache::lonxml::debug("M is evaulated to:$inside:");      #&Apache::lonxml::debug("M is evaulated to:$inside:");
  }   }
  $currentstring = &Apache::lontexconvert::converted(\$inside);   my $tex = $inside;
    my $display=&Apache::lonxml::get_param('display',$parstack,$safeeval);
    $currentstring = &Apache::lontexconvert::converted(\$inside,$display);
  if ($Apache::lontexconvert::errorstring) {   if ($Apache::lontexconvert::errorstring) {
     &Apache::lonxml::warning("tth error: ".      my $errormsg='<pre>'.&HTML::Entities::encode($Apache::lontexconvert::errorstring,'<>&"').'</pre> occured while attempting to convert this TeX: <pre>';
      $Apache::lontexconvert::errorstring);      $tex = &HTML::Entities::encode($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='';      $Apache::lontexconvert::errorstring='';
  }   }
  #&Apache::lonxml::debug("M is ends with:$currentstring:");   #&Apache::lonxml::debug("M is ends with:$currentstring:");
  $Apache::lonxml::post_evaluate=0;   $Apache::lonxml::post_evaluate=0;
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
   
  $currentstring = $inside;   $currentstring = $inside;
  my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);   my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
  if ($eval eq 'on') {   if ($eval eq 'on') {
     $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);      $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
  }   }
  if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}   if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
    # detect simple math mode entry exits, and convert them
           # to use \ensuremath ... unless there's a \verb inside.
    if (! ($currentstring=~/\\verb/)) {
       if ($currentstring=~/^\s*\$[^\$].*[^\$]\$\s*$/) {
    $currentstring=~s/^(\s*)\$/$1/;
    $currentstring=~s/\$(\s*)$/$1/;
    $currentstring='\ensuremath{'.$currentstring.'}';
       }
    }
  $Apache::lonxml::post_evaluate=0;   $Apache::lonxml::post_evaluate=0;
     }      }
     return $currentstring;      return $currentstring;
Line 123  sub end_m { Line 160  sub end_m {
 }  }
   
 sub start_tthoption {  sub start_tthoption {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
     my $result;      my $result;
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);   my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser,
      $style);
  $inside=~s/^\s*//;   $inside=~s/^\s*//;
  if ($ENV{'browser.mathml'}) {   if ($env{'browser.mathml'}) {
     &tth::ttmoptions($inside);      &tth::ttmoptions($inside);
  } else {   } else {
     &tth::tthoptions($inside);      &tth::tthoptions($inside);
Line 147  sub end_tthoption { Line 185  sub end_tthoption {
 sub start_html {  sub start_html {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};      if ($target eq 'web' || $target eq 'edit' || $target eq 'webgrade' ) {
     &Apache::lontexconvert::init_tth();   # start_body() takes care of emitting the <html> 
     if ($target eq 'web' || $target eq 'edit') {      } elsif ($target eq 'tex') {
  $currentstring = &Apache::lonxml::xmlbegin().   $currentstring .= 
     &Apache::lonxml::fontsettings();           '\documentclass[letterpaper,twoside]{article}\raggedbottom';
     } elsif ($target eq 'tex') {   if (($env{'form.latex_type'}=~'batchmode') ||
  @Apache::londefdef::table = ();              (!$env{'request.role.adv'})) {$currentstring .='\batchmode';} 
  $currentstring .= '\documentclass[letterpaper]{article}';   $currentstring .= '\newcommand{\keephidden}[1]{}'.
  if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}                             '\renewcommand{\deg}{$^{\circ}$}'.
  $currentstring .= '\newcommand{\keephidden}[1]{}    '\usepackage{multirow}'.
                            \renewcommand{\deg}{$^{\circ}$}                            '\usepackage{longtable}'.
                            \usepackage{longtable}                            '\usepackage{textcomp}'.
                            \usepackage{textcomp}                            '\usepackage{makeidx}'.
                            \usepackage{makeidx}                            '\usepackage[dvips]{graphicx}'.
                            \usepackage[dvips]{graphicx}    '\usepackage{wrapfig}'.
                            \usepackage{epsfig}\usepackage{calc}    '\usepackage{picins}'.
 \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}}    '\usepackage[T1]{fontenc}'."\n".
 \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}}';    '\usepackage[postscript]{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;      return $currentstring;
 }  }
   
 sub end_html {  sub end_html {
     my ($target,$token) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = &Apache::lonxml::xmlend();   # end_body takes care of the </html>
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 182  sub end_html { Line 232  sub end_html {
 sub start_head {  sub start_head {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        &Apache::lonxml::startredirection();
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 191  sub start_head { Line 241  sub start_head {
 sub end_head {  sub end_head {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web' && $ENV{'request.state'} eq 'published') {      if (($target eq 'web'      && $env{'request.state'} eq 'published') ||
  $currentstring = &Apache::lonmenu::registerurl(undef,$target).   ($target eq 'webgrade' && $env{'request.state'} eq 'published')) {
     $token->[2];       # in case there is a </head> but no <head>
    if ($Apache::lonxml::redirection) {
       $Apache::londefdef::head = &Apache::lonxml::endredirection();
    }
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 202  sub end_head { Line 255  sub end_head {
 sub start_map {  sub start_map {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 211  sub start_map { Line 264  sub start_map {
 sub end_map {  sub end_map {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 221  sub end_map { Line 274  sub end_map {
 sub start_select {  sub start_select {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }  elsif ($target eq 'tex') {      }  elsif ($target eq 'tex') {
  $Apache::londefdef::select=0;   $Apache::londefdef::select=0;
Line 232  sub start_select { Line 285  sub start_select {
 sub end_select {  sub end_select {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 242  sub end_select { Line 295  sub end_select {
 sub start_option {  sub start_option {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $Apache::londefdef::select++;   $Apache::londefdef::select++;
Line 258  sub start_option { Line 311  sub start_option {
 sub end_option {  sub end_option {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }  elsif ($target eq 'tex') {      }  elsif ($target eq 'tex') {
  $currentstring='}';   $currentstring='}';
Line 270  sub end_option { Line 323  sub end_option {
 sub start_input {  sub start_input {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 279  sub start_input { Line 332  sub start_input {
 sub end_input {  sub end_input {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 289  sub end_input { Line 342  sub end_input {
 sub start_textarea {  sub start_textarea {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 298  sub start_textarea { Line 351  sub start_textarea {
 sub end_textarea {  sub end_textarea {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 308  sub end_textarea { Line 361  sub end_textarea {
 sub start_form {  sub start_form {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 317  sub start_form { Line 370  sub start_form {
 sub end_form {  sub end_form {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 325  sub end_form { Line 378  sub end_form {
   
 #-- <title> tag (end tag required)  #-- <title> tag (end tag required)
 sub start_title {  sub start_title {
     my ($target,$token) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $Apache::londefdef::title = 
       &Apache::lonxml::get_all_text('/title',$parser,$style);
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\keephidden{Title of the document:  '    $currentstring .= '\keephidden{Title of the document:  ' 
     }      }
Line 342  sub start_title { Line 396  sub start_title {
 sub end_title {  sub end_title {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       # start_title takes care of swallowing the title
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
     }        }  
Line 356  sub end_title { Line 410  sub end_title {
   
 #-- <meta> tag (end tag forbidden)  #-- <meta> tag (end tag forbidden)
 sub start_meta {  sub start_meta {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  my $args='';   my $args='';
  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }   if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
  if ($args eq '') {   if ($args eq '') {
     &Apache::lonxml::get_all_text("/meta",$parser);      &Apache::lonxml::get_all_text("/meta",$parser,$style);
  } else {   } else {
     $currentstring = $token->[4];      $currentstring = $token->[4];
  }   }
Line 400  sub start_meta { Line 454  sub start_meta {
  if ((not defined $content) && (not defined $name)) {   if ((not defined $content) && (not defined $name)) {
     &Apache::lonxml::startredirection();      &Apache::lonxml::startredirection();
  }   }
       } elsif ($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;      return $currentstring;
 }  }
Line 407  sub start_meta { Line 471  sub start_meta {
 sub end_meta {  sub end_meta {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  my $args='';   my $args='';
  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }   if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
  if ($args ne '') {   if ($args ne '') {
Line 423  sub end_meta { Line 487  sub end_meta {
     return $currentstring;      return $currentstring;
 }  }
   
   sub insert_meta {
       return '
       <meta />';
   }
   
 # accessrule  # accessrule
 sub start_accessrule {  sub start_accessrule {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
     my $currentstring = '';      my $currentstring = '';
     my $eff=&Apache::lonxml::get_param      my $eff  =&Apache::lonxml::get_param('effect',$parstack,$safeeval,undef,1);
  ('effect',$parstack,$safeeval,undef,1);      my $realm=&Apache::lonxml::get_param('realm', $parstack,$safeeval,undef,1);
     my $realm=&Apache::lonxml::get_param      my $role =&Apache::lonxml::get_param('role',  $parstack,$safeeval,undef,1);
  ('realm',$parstack,$safeeval,undef,1);      my $type =&Apache::lonxml::get_param('type',  $parstack,$safeeval,undef,1);
     my $role=&Apache::lonxml::get_param  
  ('role',$parstack,$safeeval,undef,1);      my ($dom,$crs,$sec,$separator);
     $realm=~s/\s+//g;      if ($type eq 'user') {
     $realm=~s/\//\_/g;   ($dom,$crs,$sec)=split(m{/},$realm);
     $realm=~s/^\_//;   $crs = &LONCAPA::clean_username($crs);
     $realm=~s/\W/\;/g;   $separator = '/';
     $role=~s/\s+//g;      } else {
     $role=~s/\//\_/g;   ($dom,$crs,$sec)=split(/\_/,$realm);
     $role=~s/\W/\;/g;   $crs = &LONCAPA::clean_courseid($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 ($target eq 'web') {      if ($target eq 'web') {
  my $args='';   my $args='';
  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }   if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
  if ($args eq '') {   if ($args eq '') {
     &Apache::lonxml::get_all_text("/accessrule",$parser);      &Apache::lonxml::get_all_text("/accessrule",$parser,$style);
  } else {   } else {
     $currentstring = $token->[4];      $currentstring = $token->[4];
  }   }
     }      }
     if ($target eq 'meta') {      if ($target eq 'meta') {
  $currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';   $currentstring='<rule>'.$eff.':'.$realm.':'.$role.':'.$type.'</rule>';
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 468  sub end_accessrule { Line 547  sub end_accessrule {
     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)  #-- <body> tag (end tag required)
 sub start_body {  sub start_body {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {  
       if ($target eq 'web' || $target eq 'webgrade') {
  if ($Apache::lonhomework::parsing_a_problem) {   if ($Apache::lonhomework::parsing_a_problem) {
     &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");      &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
     return '';      return '';
  }   }
  if (!$Apache::lonxml::registered &&   
     $ENV{'request.state'} eq 'published') {   if (&is_inside_of($tagstack, "head")) {
     $currentstring.='<head>'.      &end_head(@_);
  &Apache::lonmenu::registerurl(undef,$target).'</head>';  
  }  
 # Accessibility  
  if ($ENV{'browser.imagesuppress'} eq 'on') {  
     delete($token->[2]->{'background'});  
  }  
  if ($ENV{'browser.fontenhance'} eq 'on') {  
     my $style='';  
     foreach my $key (keys(%{$token->[2]})) {  
  if ($key =~ /^style$/i) {  
     $style.=$token->[2]->{$key}.';';  
     delete($token->[2]->{$key});  
  }  
     }  
     $token->[2]->{'style'}=$style.'; font-size: x-large;';  
  }  
  if ($ENV{'browser.blackwhite'} eq 'on') {  
     delete($token->[2]->{'font'});  
     delete($token->[2]->{'link'});  
     delete($token->[2]->{'alink'});  
     delete($token->[2]->{'vlink'});  
     delete($token->[2]->{'bgcolor'});  
     delete($token->[2]->{'background'});  
  }  
 # Overload loads  
  my $onLoad='';  
  foreach my $key (keys(%{$token->[2]})) {  
     if ($key =~ /^onload$/i) {  
  $onLoad.=$token->[2]->{$key}.';';  
  delete($token->[2]->{$key});  
     }  
  }  
  $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;  
  my $onUnload='';  
  foreach my $key (keys(%{$token->[2]})) {  
     if ($key =~ /^onunload$/i) {  
  $onUnload.=$token->[2]->{$key}.';';  
  delete($token->[2]->{$key});  
     }  
  }   }
  $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().  
     ';'.$onUnload;  
   
  $currentstring .= '<'.$token->[1];   my $extra_head = &generate_css_links();
  foreach (keys %{$token->[2]}) {  
     $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';   $currentstring = 
  }      &Apache::loncommon::start_page($Apache::londefdef::title,
  $currentstring.='>';     $Apache::londefdef::head
  if ($ENV{'request.state'} ne 'published') {        .$extra_head,
     $currentstring.=(<<EDITBUTTON);     {'add_entries'    => $token->[2],
  <form method="post">      'no_title'       => 1,
  <input type="submit" name="editmode" accesskey="e" value="Edit" />      'force_register' => 1});
  </form>  
 EDITBUTTON   if ($env{'request.state'} ne 'published') {
  } else {      $currentstring.=&Apache::lonmenu::constspaceform();
     $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);      $currentstring.=&Apache::londefdef::edit_controls();
  }   }
  $currentstring.=&Apache::lonxml::message_location();   $currentstring.=&Apache::lonxml::message_location();
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
Line 544  EDITBUTTON Line 594  EDITBUTTON
     return $currentstring;      return $currentstring;
 }  }
   
   sub edit_controls {
       my $result .= '
   <form method="post">
   <div class="LC_edit_problem_header">
   <div class="LC_edit_problem_header_row1">'.
   &Apache::lonxml::renderingoptions().'
   <input type="submit" name="changeproblemmode" value="'.&mt('Change View').'" />
   </div>
   <div class="LC_edit_problem_header_edit_row"><input type="submit" name="editmode" accesskey="e" value="Edit" /></div></div>
   </form>
   <br />';
       return $result;
   }
   
 sub end_body {  sub end_body {
     my ($target,$token) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off unclosed <p>
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring .= &Apache::loncommon::end_page({'discussion' => 1});
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';     $currentstring .= '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';  
     }       } 
     return $currentstring;      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)  #-- <center> tag (end tag required)
 sub start_center {  sub start_center {
     my ($target,$token) = @_;      my ($target,$token,$tagstack) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior para.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\begin{center}';     if (&is_inside_of($tagstack, "table")) {
       $currentstring .= &center_correction();
    }
    $currentstring .= '\begin{center}';  
     }      }
     return $currentstring;      return $currentstring;
 }  }
   
 sub end_center {  sub end_center {
     my ($target,$token) = @_;      my ($target,$token,$tagstack) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\end{center}';     $currentstring = '\end{center}';  
    if (&is_inside_of($tagstack, "table")) {
       $currentstring .= &center_end_correction();
    }
     }      }
     return $currentstring;      return $currentstring;
 }  }
   
 #-- <b> tag (end tag required)  #-- <b> tag (end tag required)
   #      NOTE: In TeX mode disables internal <p>
 sub start_b {  sub start_b {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\textbf{';     &disable_para();
    $currentstring .= '\textbf{';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 593  sub start_b { Line 672  sub start_b {
 sub end_b {  sub end_b {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '}';     &enable_para();
    $currentstring = '}';
     }       } 
     return $currentstring;      return $currentstring;
 }  }
   
 #-- <strong> tag (end tag required)  #-- <strong> tag (end tag required)
   #    NOTE: in TeX mode disables internal <p>
 sub start_strong {  sub start_strong {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
    &disable_para();
  $currentstring = '\textbf{';     $currentstring = '\textbf{';  
     }       } 
     return $currentstring;      return $currentstring;
Line 616  sub start_strong { Line 698  sub start_strong {
 sub end_strong {  sub end_strong {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
    &enable_para();
  $currentstring = '}';     $currentstring = '}';  
     }      }
     return $currentstring;      return $currentstring;
Line 627  sub end_strong { Line 710  sub end_strong {
 #-- <h1> tag (end tag required)  #-- <h1> tag (end tag required)
 sub start_h1 {  sub start_h1 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior para.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));   my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 642  sub start_h1 { Line 725  sub start_h1 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     } elsif ($target eq 'meta') {      } elsif ($target eq 'meta') {
  $currentstring='<subject>';   $currentstring.='<subject>';
  &start_output($target);   &start_output($target);
     }      }
     return $currentstring;      return $currentstring;
Line 653  sub start_h1 { Line 736  sub start_h1 {
 sub end_h1 {  sub end_h1 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 676  sub end_h1 { Line 759  sub end_h1 {
 #-- <h2> tag  #-- <h2> tag
 sub start_h2 {  sub start_h2 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior para.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 691  sub start_h2 { Line 774  sub start_h2 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 699  sub start_h2 { Line 782  sub start_h2 {
 sub end_h2 {  sub end_h2 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 719  sub end_h2 { Line 802  sub end_h2 {
 #-- <h3> tag  #-- <h3> tag
 sub start_h3 {  sub start_h3 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior para.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 734  sub start_h3 { Line 817  sub start_h3 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 742  sub start_h3 { Line 825  sub start_h3 {
 sub end_h3 {  sub end_h3 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 762  sub end_h3 { Line 845  sub end_h3 {
 #-- <h4> tag  #-- <h4> tag
 sub start_h4 {  sub start_h4 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior para.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 777  sub start_h4 { Line 860  sub start_h4 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 785  sub start_h4 { Line 868  sub start_h4 {
 sub end_h4 {  sub end_h4 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 805  sub end_h4 { Line 888  sub end_h4 {
 #-- <h5> tag  #-- <h5> tag
 sub start_h5 {  sub start_h5 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior paras.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 820  sub start_h5 { Line 903  sub start_h5 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 828  sub start_h5 { Line 911  sub start_h5 {
 sub end_h5 {  sub end_h5 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 848  sub end_h5 { Line 931  sub end_h5 {
 #-- <h6> tag  #-- <h6> tag
 sub start_h6 {  sub start_h6 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any prior paras.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 863  sub start_h6 { Line 946  sub start_h6 {
  }   }
  my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);   my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
  if (not defined $TeXsize) {$TeXsize="large";}   if (not defined $TeXsize) {$TeXsize="large";}
  $currentstring .= $pre.'{\\'.$TeXsize.' \textbf{';    $currentstring .= '\strut\newline '.$pre.'{\\'.$TeXsize.' \textbf{'; 
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 871  sub start_h6 { Line 954  sub start_h6 {
 sub end_h6 {  sub end_h6 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 892  sub end_h6 { Line 975  sub end_h6 {
 sub start_cite {  sub start_cite {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\textit{';   $currentstring .= '\textit{';
Line 903  sub start_cite { Line 986  sub start_cite {
 sub end_cite {  sub end_cite {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
Line 915  sub end_cite { Line 998  sub end_cite {
 sub start_i {  sub start_i {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\textit{';   $currentstring .= '\textit{';
Line 926  sub start_i { Line 1009  sub start_i {
 sub end_i {  sub end_i {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
Line 938  sub end_i { Line 1021  sub end_i {
 sub start_address {  sub start_address {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\textit{';   $currentstring .= '\textit{';
Line 949  sub start_address { Line 1032  sub start_address {
 sub end_address {  sub end_address {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
Line 961  sub end_address { Line 1044  sub end_address {
 sub start_dfn {  sub start_dfn {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\textit{';   $currentstring .= '\textit{';
Line 972  sub start_dfn { Line 1055  sub start_dfn {
 sub end_dfn {  sub end_dfn {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
Line 984  sub end_dfn { Line 1067  sub end_dfn {
 sub start_tt {  sub start_tt {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\texttt{';   $currentstring .= '\texttt{';
Line 995  sub start_tt { Line 1078  sub start_tt {
 sub end_tt {  sub end_tt {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
Line 1007  sub end_tt { Line 1090  sub end_tt {
 sub start_kbd {  sub start_kbd {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\texttt{';   $currentstring .= '\texttt{';
Line 1018  sub start_kbd { Line 1101  sub start_kbd {
 sub end_kbd {  sub end_kbd {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
Line 1030  sub end_kbd { Line 1113  sub end_kbd {
 sub start_code {  sub start_code {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\texttt{';   $currentstring .= '\texttt{';
Line 1041  sub start_code { Line 1124  sub start_code {
 sub end_code {  sub end_code {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
Line 1053  sub end_code { Line 1136  sub end_code {
 sub start_em {  sub start_em {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\emph{';   $currentstring .= '\emph{';
Line 1064  sub start_em { Line 1147  sub start_em {
 sub end_em {  sub end_em {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
Line 1076  sub end_em { Line 1159  sub end_em {
 sub start_q {  sub start_q {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\emph{';   $currentstring .= '\emph{';
Line 1087  sub start_q { Line 1170  sub start_q {
 sub end_q {  sub end_q {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
Line 1095  sub end_q { Line 1178  sub end_q {
     return $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)  #-- <p> tag (end tag optional)
 #optional attribute - align="center|left|right"  #optional attribute - align="center|left|right"
 sub start_p {  sub start_p {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
    $currentstring .= &end_p(); # close off prior para if in progress.
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {   if (! ($currentstring =~ /\//)) {
       $closing_string = '</p>'; # Deal correctly with <p /> e.g.
    }
       } elsif ($target eq 'tex' && !$para_disabled) {
   
    $currentstring .= &end_p(); # close off prior para if in progress.
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if ($align eq 'center') {   if ($align eq 'center') {
     $currentstring='\begin{center}\par';      $currentstring .='\begin{center}\par ';
       $closing_string = '\end{center}';
       if (&is_inside_of($tagstack, "table")) {
    $currentstring = &center_correction().$currentstring;
       }
  } elsif ($align eq 'right') {   } elsif ($align eq 'right') {
     $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';      $currentstring.="\n".'{\flushright ';
   #    $currentstring.='\makebox['.$env{'form.textwidth'}.']{\hfill\llap{';
       $closing_string= "}\n";
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';      $currentstring.= "\n".'{\flushleft ';
  }  #    $currentstring.='\noindent\makebox['.$env{'form.textwidth'}.']{{';
  my $signal=1;#<p> does not work inside <b>...</b>       $closing_string = "}\n";
  foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}   } else {
  if (!$signal) {$currentstring = '';}              $currentstring.='\par ';
  }      if (&is_inside_of($tagstack, 'table')) {
    $closing_string = '\vskip 0pt'; # Seems to be consistent with <p> in tables.
       } else {
    $closing_string = '\strut\\\\\strut ';
       }
           }
   
     }      }
     return $currentstring;      return $currentstring;
 }  }
   #
   #  End paragraph processing just requires that we output the
   #  closing string that was saved and blank it.
 sub end_p {  sub end_p {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      #  Note only 'tex' mode uses disable_para and enable_para
     my $currentstring = '';      #  so we don't need to know the target in the check below:
     if ($target eq 'web') {  
  $currentstring .= $token->[2];      if (!$para_disabled) {
     } elsif ($target eq 'tex') {   my $current_string = $closing_string;
  if ($$tagstack[-1] eq 'p') {   $closing_string = ''; # Not in a para anymore.
     my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   return $current_string;
     if ($align eq 'center') {      } else {
  $currentstring .= '\end{center}';   return '';
     } elsif ($align eq 'right') {  
  $currentstring .= '}}';  
     } elsif ($align eq 'left') {  
  $currentstring .= '}\hfill}';  
     }  
  }  
     }      }
     return $currentstring;  
 }  
   
   }
   }
 #-- <br> tag (end tag forbidden)  #-- <br> tag (end tag forbidden)
 sub start_br {  sub start_br {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {   my @tempo=@$tagstack;
     $currentstring .= '\vskip 0.2 mm ';   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;      return $currentstring;
 }  }
Line 1156  sub start_br { Line 1294  sub start_br {
 sub end_br {  sub end_br {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     }      }
     return $currentstring;      return $currentstring;
Line 1166  sub end_br { Line 1304  sub end_br {
 sub start_big {  sub start_big {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '{\large ';   $currentstring .= '{\large ';
Line 1177  sub start_big { Line 1315  sub start_big {
 sub end_big {  sub end_big {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
Line 1189  sub end_big { Line 1327  sub end_big {
 sub start_small {  sub start_small {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '{\footnotesize ';   $currentstring .= '{\footnotesize ';
Line 1200  sub start_small { Line 1338  sub start_small {
 sub end_small {  sub end_small {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}';   $currentstring .= '}';
Line 1212  sub end_small { Line 1350  sub end_small {
 sub start_basefont {  sub start_basefont {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);   my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
Line 1226  sub start_basefont { Line 1364  sub start_basefont {
 sub end_basefont {  sub end_basefont {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);   my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
Line 1241  sub end_basefont { Line 1379  sub end_basefont {
 sub start_font {  sub start_font {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);   my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
  if ($face!~/symbol/i) {   if ($face!~/symbol/i) {
     if (($ENV{'browser.fontenhance'} eq 'on') ||       if (($env{'browser.fontenhance'} eq 'on') || 
  ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }   ($env{'browser.blackwhite'} eq 'on')) { return ''; }
  }   }
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }  elsif ($target eq 'tex') {      }  elsif ($target eq 'tex') {
Line 1260  sub start_font { Line 1398  sub start_font {
 sub end_font {  sub end_font {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }  elsif ($target eq 'tex') {      }  elsif ($target eq 'tex') {
  my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);   my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
Line 1275  sub end_font { Line 1413  sub end_font {
 sub start_strike {  sub start_strike {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  &Apache::lonxml::startredirection();   &Apache::lonxml::startredirection();
Line 1286  sub start_strike { Line 1424  sub start_strike {
 sub end_strike {  sub end_strike {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring=&Apache::lonxml::endredirection();   $currentstring=&Apache::lonxml::endredirection();
Line 1301  sub end_strike { Line 1439  sub end_strike {
 sub start_s {  sub start_s {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  &Apache::lonxml::startredirection();   &Apache::lonxml::startredirection();
Line 1312  sub start_s { Line 1450  sub start_s {
 sub end_s {  sub end_s {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring=&Apache::lonxml::endredirection();   $currentstring=&Apache::lonxml::endredirection();
Line 1327  sub end_s { Line 1465  sub end_s {
 sub start_sub {  sub start_sub {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\ensuremath{_{';   $currentstring .= '\raisebox{-\smallskipamount}{\scriptsize{';
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1338  sub start_sub { Line 1476  sub start_sub {
 sub end_sub {  sub end_sub {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}}';   $currentstring .= '}}';
Line 1350  sub end_sub { Line 1488  sub end_sub {
 sub start_sup {  sub start_sup {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\ensuremath{^{';   $currentstring .= '\raisebox{\smallskipamount}{\scriptsize{';
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1361  sub start_sup { Line 1499  sub start_sup {
 sub end_sup {  sub end_sup {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '}}';   $currentstring .= '}}';
Line 1372  sub end_sup { Line 1510  sub end_sup {
 #-- <hr> tag (end tag forbidden)  #-- <hr> tag (end tag forbidden)
 sub start_hr {  sub start_hr {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # End enclosing para.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } 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);   my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
  if (defined $LaTeXwidth) {   if (defined $LaTeXwidth) {
     if ($LaTeXwidth=~/^%/) {      if ($LaTeXwidth=~/^%/) {
Line 1396  sub start_hr { Line 1555  sub start_hr {
  }   }
  $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.   $currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
                                     $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';                                      $LaTeXwidth.'][b]{\hrulefill}'.$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;      return $currentstring;
 }  }
Line 1403  sub start_hr { Line 1572  sub start_hr {
 sub end_hr {  sub end_hr {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     }      }
     return $currentstring;      return $currentstring;
 }  }
   
 #-- <div> tag (end tag required)  #-- <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 {  sub start_div {
     my ($target,$token) = @_;      my ($target,$token, $tagstack, $parstack, $parser, $safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close enclosing para.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $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")) {
    $currentstring = &center_correction().$currentstring;
    $endstring    .= &center_end_correction(); 
       }
    }
    elsif ($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;      return $currentstring;
 }  }
   
 sub end_div {  sub end_div {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     }       }
       if ($target eq 'tex') {
    my $endstring = pop @div_end_stack;
    $currentstring .= $endstring;
       }
     return $currentstring;      return $currentstring;
 }  }
   }
   
 #-- <a> tag (end tag required)  #-- <a> tag (end tag required)
 sub start_a {  sub start_a {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
     } elsif ($target eq 'tex') {      undef,1);
  my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);   $currentstring=&Apache::lonenc::encrypt_ref($token,{'href'=>$href});
  my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);  
  if ($a=~/\S/) {  
     $a=~s/([^\\])%/$1\\\%/g;  
     $currentstring .= '\ref{URI: '.$a.'}';  
  } elsif ($b=~/\S/) {  
     $currentstring .= '\ref{Anchor: '.$b.'}';  
  } else {  
     $currentstring.='';  
  }  
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 1452  sub start_a { Line 1656  sub start_a {
 sub end_a {  sub end_a {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $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;      return $currentstring;
 }  }
   
Line 1462  sub end_a { Line 1688  sub end_a {
 sub start_li {  sub start_li {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my  $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);   my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
  if ($type=~/circle/) {   my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
     $currentstring .= ' \item[o] ';   #FIXME need to support types i and I 
    if ($type=~/disc/) {
       $currentstring .= ' \item[$\bullet$] ';
    } elsif ($type=~/circle/) {
       $currentstring .= ' \item[$\circ$] ';
  } elsif ($type=~/square/) {   } elsif ($type=~/square/) {
     $currentstring .= ' \item[$\Box$] ';      $currentstring .= ' \item[$\diamond$] ';
  } elsif ($type ne '') {    } elsif ($type eq '1') {
     $currentstring .= ' \item['.$type.'] ';      $currentstring .= ' \item['.($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 {   } else {
     $currentstring .= ' \item ';      $currentstring .= ' \item ';
  }     }  
     }    $Apache::londefdef::list_index++;
       }
     return $currentstring;      return $currentstring;
 }  }
   
 sub end_li {  sub end_li {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # In case there's a <p> in the <li>
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring .= $token->[2];     
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1492  sub end_li { Line 1729  sub end_li {
 sub start_u {  sub start_u {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  &Apache::lonxml::startredirection();   &Apache::lonxml::startredirection();
Line 1503  sub start_u { Line 1740  sub start_u {
 sub end_u {  sub end_u {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring=&Apache::lonxml::endredirection();   $currentstring=&Apache::lonxml::endredirection();
Line 1517  sub end_u { Line 1754  sub end_u {
 #-- <ul> tag (end tag required)  #-- <ul> tag (end tag required)
 sub start_ul {  sub start_ul {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off enclosing list.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);   my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
    $Apache::londefdef::list_index=0;
  if ($TeXtype eq 'disc') {   if ($TeXtype eq 'disc') {
     $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}      $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
                                 \renewcommand{\labelitemii}{$\bullet$}                                 '\renewcommand{\labelitemii}{$\bullet$}'. 
                                 \renewcommand{\labelitemiii}{$\bullet$}                                '\renewcommand{\labelitemiii}{$\bullet$}'.
                                 \renewcommand{\labelitemiv}{$\bullet$}';                                '\renewcommand{\labelitemiv}{$\bullet$}';
  } elsif ($TeXtype eq 'circle') {   } elsif ($TeXtype eq 'circle') {
     $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}      $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
                                 \renewcommand{\labelitemii}{$\circ$}                                 '\renewcommand{\labelitemii}{$\circ$}'. 
                                 \renewcommand{\labelitemiii}{$\circ$}                                '\renewcommand{\labelitemiii}{$\circ$}'.
                                 \renewcommand{\labelitemiv}{$\circ$}';                                '\renewcommand{\labelitemiv}{$\circ$}';
  } elsif ($TeXtype eq 'square') {   } elsif ($TeXtype eq 'square') {
     $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}      $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
                                 \renewcommand{\labelitemii}{$\diamond$}                                 '\renewcommand{\labelitemii}{$\diamond$}'. 
                                 \renewcommand{\labelitemiii}{$\diamond$}                                '\renewcommand{\labelitemiii}{$\diamond$}'.
                                 \renewcommand{\labelitemiv}{$\diamond$}';                                '\renewcommand{\labelitemiv}{$\diamond$}';
  }   }
  $currentstring .= '\begin{itemize}';     $currentstring .= '\strut \begin{itemize}';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1546  sub start_ul { Line 1784  sub start_ul {
 sub end_ul {  sub end_ul {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}   $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
                                 \renewcommand{\labelitemii}{$\bullet$}                                  '\renewcommand{\labelitemii}{$\bullet$}'. 
                                 \renewcommand{\labelitemiii}{$\bullet$}                                 '\renewcommand{\labelitemiii}{$\bullet$}'.
                                 \renewcommand{\labelitemiv}{$\bullet$}';                                   '\renewcommand{\labelitemiv}{$\bullet$}\strut ';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1561  sub end_ul { Line 1799  sub end_ul {
 sub start_menu {  sub start_menu {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = " \\begin{itemize} ";     $currentstring = " \\begin{itemize} ";  
Line 1572  sub start_menu { Line 1810  sub start_menu {
 sub end_menu {  sub end_menu {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = " \\end{itemize}";     $currentstring = " \\end{itemize}";  
Line 1583  sub end_menu { Line 1821  sub end_menu {
 #-- <dir> tag (end tag required)  #-- <dir> tag (end tag required)
 sub start_dir {  sub start_dir {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # In case there's a <p> prior to the list.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = " \\begin{itemize} ";     $currentstring .= " \\begin{itemize} ";  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1595  sub start_dir { Line 1833  sub start_dir {
 sub end_dir {  sub end_dir {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = " \\end{itemize}";     $currentstring = " \\end{itemize}";  
Line 1606  sub end_dir { Line 1844  sub end_dir {
 #-- <ol> tag (end tag required)  #-- <ol> tag (end tag required)
 sub start_ol {  sub start_ol {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # In case there's a <p> prior to the list.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
    $Apache::londefdef::list_index=0;
  my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);   my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
  if ($type eq '1') {   if ($type eq '1') {
     $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
                                 \renewcommand{\labelenumii}{\arabic{enumii}.}                                 '\renewcommand{\labelenumii}{\arabic{enumii}.}'. 
                                 \renewcommand{\labelenumiii}{\arabic{enumiii}.}                                '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\arabic{enumiv}.}';                                '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
  } elsif ($type eq 'A') {   } elsif ($type eq 'A') {
     $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
                                 \renewcommand{\labelenumii}{\Alph{enumii}.}                                 '\renewcommand{\labelenumii}{\Alph{enumii}.}'. 
                                 \renewcommand{\labelenumiii}{\Alph{enumiii}.}                                '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\Alph{enumiv}.}';                                '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
  } elsif ($type eq 'a') {   } elsif ($type eq 'a') {
     $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
                                 \renewcommand{\labelenumii}{\alph{enumii}.}                                '\renewcommand{\labelenumii}{\alph{enumii}.}'.
                                 \renewcommand{\labelenumiii}{\alph{enumiii}.}                                '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\alph{enumiv}.} ';                                '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
  } elsif ($type eq 'i') {   } elsif ($type eq 'i') {
     $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
                                 \renewcommand{\labelenumii}{\roman{enumii}.}                                '\renewcommand{\labelenumii}{\roman{enumii}.}'.
                                 \renewcommand{\labelenumiii}{\roman{enumiii}.}                                '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\roman{enumiv}.} ';                                '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
  } elsif ($type eq 'I') {   } elsif ($type eq 'I') {
     $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
                                 \renewcommand{\labelenumii}{\Roman{enumii}.}                                '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
                                 \renewcommand{\labelenumiii}{\Roman{enumiii}.}                                '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';                                '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
  }   }
  $currentstring .= '\begin{enumerate}';     $currentstring .= '\strut \begin{enumerate}';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1645  sub start_ol { Line 1884  sub start_ol {
 sub end_ol {  sub end_ol {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}   $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
                                           \renewcommand{\labelenumii}{\arabic{enumii}.}                                          '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
                                           \renewcommand{\labelenumiii}{\arabic{enumiii}.}                                          '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
                                           \renewcommand{\labelenumiv}{\arabic{enumiv}.}';                                            '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1659  sub end_ol { Line 1898  sub end_ol {
 #-- <dl> tag (end tag required)  #-- <dl> tag (end tag required)
 sub start_dl {  sub start_dl {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # In case there's a <p> unclosed prior to the list.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\begin{description}';   $currentstring .= '\begin{description}';
  @Apache::londefdef::description=();   $Apache::londefdef::DL++;
  $Apache::londefdef::DD_redirection=0;   push(@Apache::londefdef::description,[]);
  $Apache::londefdef::DT_redirection=0;   $Apache::londefdef::DD[$Apache::londefdef::DL]=0;
    $Apache::londefdef::DT[$Apache::londefdef::DL]=0;
    $Apache::londefdef::seenDT[$Apache::londefdef::DL]=0;
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1674  sub start_dl { Line 1915  sub start_dl {
 sub end_dl {  sub end_dl {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($Apache::londefdef::DT_redirection) {   if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
     my $data=&item_cleanup;   if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
     push @Apache::londefdef::description,'\item['.$data.']';   foreach my $element (@{$Apache::londefdef::description[-1]}) {
     $Apache::londefdef::DT_redirection=0;  
  } elsif ($Apache::londefdef::DD_redirection) {  
     $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();  
  }  
  foreach my $element (@Apache::londefdef::description) {  
     $currentstring.=' '.$element.' ';      $currentstring.=' '.$element.' ';
  }   }
  @Apache::londefdef::description=();   pop(@Apache::londefdef::description);
  $currentstring.='\end{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;      return $currentstring;
 }  }
Line 1697  sub end_dl { Line 1937  sub end_dl {
 sub start_dt {  sub start_dt {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring='';      my $currentstring='';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($Apache::londefdef::DT_redirection) {   if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
     my $data=&item_cleanup;   if ($Apache::londefdef::DD[-1]) { &end_dd(@_); }
     push @Apache::londefdef::description,'\item['.$data.']';  
     $Apache::londefdef::DT_redirection=0;  
  } elsif ($Apache::londefdef::DD_redirection) {  
     $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();  
     $Apache::londefdef::DD_redirection=0;  
  }  
  &Apache::lonxml::startredirection();   &Apache::lonxml::startredirection();
  $Apache::londefdef::DT_redirection=1;   $Apache::londefdef::DT[-1]++;
    $Apache::londefdef::seenDT[-1]=1;
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1717  sub start_dt { Line 1952  sub start_dt {
 sub end_dt {  sub end_dt {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $data=&item_cleanup;   if ($Apache::londefdef::DT[-1]) {
  push @Apache::londefdef::description,'\item['.$data.']';      my $data=&item_cleanup();
  $Apache::londefdef::DT_redirection=0;      push(@{$Apache::londefdef::description[-1]},'\item['.$data.'] \strut \vskip 0mm');
       $Apache::londefdef::DT[-1]--;
    }
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1738  sub item_cleanup { Line 1975  sub item_cleanup {
 sub start_dd {  sub start_dd {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($Apache::londefdef::DT_redirection) {   if ($Apache::londefdef::DT[-1]) { &end_dt(@_); }
     my $data=&item_cleanup;   if ($Apache::londefdef::DD[-1]) { &end_dd(@_);}
     push @Apache::londefdef::description,'\item['.$data.']';   if (!$Apache::londefdef::seenDT[-1]) {
     $Apache::londefdef::DT_redirection=0;      push(@{$Apache::londefdef::description[-1]},'\item[\strut] \strut \vskip 0mm ');
  }   }
  $Apache::londefdef::DD_redirection=1;   push(@{$Apache::londefdef::description[-1]},'');
    $Apache::londefdef::description[-1]->[-1].=' \strut ';
    $Apache::londefdef::DD[-1]++;
  &Apache::lonxml::startredirection();   &Apache::lonxml::startredirection();
     }       } 
     return $currentstring;      return $currentstring;
Line 1755  sub start_dd { Line 1994  sub start_dd {
 sub end_dd {  sub end_dd {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }  elsif ($target eq 'tex') {      }  elsif ($target eq 'tex') {
  $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();   $Apache::londefdef::description[-1]->[-1].=
  $Apache::londefdef::DD_redirection=0;      &Apache::lonxml::endredirection().' \vskip 0mm ';
    $Apache::londefdef::DD[-1]--;
     }      }
     return $currentstring;      return $currentstring;
 }  }
   
 #-- <table> tag (end tag required)  #-- <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  #list of supported attributes: border,width,TeXwidth
 sub start_table {  sub start_table {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my ($textwidth,$currentstring)=('','');      my $textwidth = '';
     if ($target eq 'web') {      my $currentstring = &end_p();
  $currentstring = $token->[4];           if ($target eq 'web' || $target eq 'webgrade') {
    $currentstring .= $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $aa = {};   push(@Apache::londefdef::table, {}); 
  push @Apache::londefdef::table, $aa;   
  $Apache::londefdef::table[-1]{'row_number'} = -1;   $Apache::londefdef::table[-1]{'row_number'} = -1;
         #table's width           #maximum table's width (default coincides with text line length)
         #default coincides with text line length  
  if ($#Apache::londefdef::table==0) {   if ($#Apache::londefdef::table==0) {
     $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm      $textwidth=&recalc($env{'form.textwidth'}); #result is always in mm
     $textwidth=~/(\d+\.?\d*)/;      $textwidth=~/(\d+\.?\d*)/;
     $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame      $textwidth=0.85*$1; #accounts "internal" LaTeX space for table frame
  } else {   } else {
     if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {      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   #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'}];    $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]; 
     } else {      } else {
               #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly                #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
  my $textwidth=$Apache::londefdef::table[-2]{'width'};   $textwidth=$Apache::londefdef::table[-2]{'width'};
  for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {   for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
     $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$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);   my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
  if (not defined $TeXwidth) {   if (!defined($TeXwidth)) {
     my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);      my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,
     if ($htmlwidth=~/%/) {         $safeeval,undef,1);
                 $Apache::londefdef::table[-1]{'percent'}=1;      if ($htmlwidth =~ /%/) {
  $htmlwidth=~/(\d+)/;   $TeXwidth = $htmlwidth;
  $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;      } else { 
     } else {   $TeXwidth = $textwidth;
  $Apache::londefdef::table[-1]{'width'}=$textwidth;  
     }      }
  } elsif ($TeXwidth=~/%/) {   }
     $Apache::londefdef::table[-1]{'percent'}=1;   # 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+)/;      $TeXwidth=~/(\d+)/;
             $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;              $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
  } else {   } else {
     $Apache::londefdef::table[-1]{'width'}=$TeXwidth;      $Apache::londefdef::table[-1]{'width'}=$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          #table's border
  my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);    my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval); 
         my $permission=&Apache::lonxml::get_param('DropEmptyColumns',$parstack,$safeeval,undef,0);          my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
  unless (defined $border) { $border = 0; }   unless (defined $border) { $border = 0; }
  if ($border) {    if ($border) { 
     $Apache::londefdef::table[-1]{'hinc'} = '\hline ';       $Apache::londefdef::table[-1]{'hinc'} = '\hline '; 
Line 1824  sub start_table { Line 2079  sub start_table {
     $Apache::londefdef::table[-1]{'vvinc'} = '';      $Apache::londefdef::table[-1]{'vvinc'} = '';
  }   }
  if ($#Apache::londefdef::table==0) {   if ($#Apache::londefdef::table==0) {
     $Apache::londefdef::table[-1]{'output'}='\newline\setlength{\tabcolsep}{1 mm}';      #    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]{'output'}.=' \noindent \begin{tabular} ';
         $Apache::londefdef::table[-1]{'TeXlen'}=[];          $Apache::londefdef::table[-1]{'TeXlen'}=[];
         $Apache::londefdef::table[-1]{'objectlen'}=[];          $Apache::londefdef::table[-1]{'objectlen'}=[];
           $Apache::londefdef::table[-1]{'objectsignal'}=[];
         $Apache::londefdef::table[-1]{'maxlen'}=[];          $Apache::londefdef::table[-1]{'maxlen'}=[];
         $Apache::londefdef::table[-1]{'minlen'}=[];          $Apache::londefdef::table[-1]{'minlen'}=[];
         $Apache::londefdef::table[-1]{'content'}=[];          $Apache::londefdef::table[-1]{'content'}=[];
         $Apache::londefdef::table[-1]{'align'}=[];          $Apache::londefdef::table[-1]{'align'}=[];
         $currentstring='\keephidden{NEW TABLE ENTRY}';          $currentstring.=' \keephidden{NEW TABLE ENTRY}';
    }  
   
       }
     return $currentstring;      return $currentstring;
 }  }
     
 sub end_table {  sub end_table {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
    my $border =  &Apache::lonxml::get_param('border',$parstack,$safeeval);
  my $inmemory = '';   my $inmemory = '';
  my $output = '';   my $output = '';
  my $WARNING='';   my $WARNING='';
         #width of columns from TeXwidth attributes          #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 $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
     for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {      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][$jn]) {   if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
Line 1857  sub end_table { Line 2123  sub end_table {
  }   }
         #free space and number of empty columns          #free space and number of empty columns
  my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);   my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
 ## &Apache::lonnet::logthis("Available space $Apache::londefdef::table[-1]{'width'}");   if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;} 
  for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {   for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
     if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {      if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
  $empty_columns++;   $empty_columns++;
Line 1865  sub end_table { Line 2131  sub end_table {
  $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];   $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
     }      }
  }   }
   
         #boundaries for contents columns          #boundaries for contents columns
  my @min_len=();#columns can not be narrower    my @min_len=();#columns can not be narrower 
  my @max_len=();#maximum length of column   my @max_len=();#maximum length of column
  for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {   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,$localmax)=(0,0);   my ($localmin,$localmax)=(0,0);
  for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {   for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
     if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {      if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
Line 1880  sub end_table { Line 2150  sub end_table {
  }   }
  push @min_len, $localmin;   push @min_len, $localmin;
  push @max_len, $localmax;   push @max_len, $localmax;
    $avg_max = $localmax + $avg_max;
    $avg_min = $localmin + $avg_min;
  }   }
  for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {   # 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,;      my $localmin=0,;
     for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {      for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
  if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {   if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
     $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];      $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
  }   }
     }      }
     if ($max_len[$jn]<$localmin) {$max_len[$jn]=$localmin;}#object size is bigger      if ($max_len[$jn]<$localmin) {
     if ($min_len[$jn]<$localmin) {$min_len[$jn]=$localmin;}#object size is bigger   $max_len[$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) {      if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
  $min_len[$jn]=0;   $min_len[$jn]=0;
  $max_len[$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         #final adjustment of column width
  my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array   my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
  my @adjust=();   my @adjust=();
         #step 1. adjustment by maximum value          #step 1. adjustment by maximum value
  my $space_neeeded=0;   my $space_needed=0;
  for (my $jn=0;$jn<=$#max_len;$jn++) {   for (my $jn=0;$jn<=$#max_len;$jn++) {
     $space_neeeded=$space_neeeded+$max_len[$jn];      $space_needed=$space_needed+$max_len[$jn];
  }   }
  if ($space_neeeded<=$available_space) {   if ($space_needed<=$available_space) {
 ##    &Apache::lonnet::logthis("I am in position 1: $space_neeeded <= $available_space");  
     for (my $jn=0;$jn<=$#max_len;$jn++) {      for (my $jn=0;$jn<=$#max_len;$jn++) {
  if ($fwidth[$jn]==0) {   if ($fwidth[$jn]==0) {
     $fwidth[$jn]=$max_len[$jn];      $fwidth[$jn]=$max_len[$jn];
Line 1912  sub end_table { Line 2218  sub end_table {
     }      }
  } else {   } else {
         #step 2. adjustment by minimum value (estimation)          #step 2. adjustment by minimum value (estimation)
     $space_neeeded=0;      $space_needed=0;
     for (my $jn=0;$jn<=$#min_len;$jn++) {      for (my $jn=0;$jn<=$#min_len;$jn++) {
  $space_neeeded+=$min_len[$jn];   $space_needed+=$min_len[$jn];
     }      }
     if ($space_neeeded>$available_space) {      if ($space_needed>$available_space) {
 ## &Apache::lonnet::logthis("I am in position 2");  
  $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';   $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
  for (my $jn=0;$jn<=$#max_len;$jn++) {   for (my $jn=0;$jn<=$#max_len;$jn++) {
     if ($fwidth[$jn]==0) {      if ($fwidth[$jn]==0) {
  $fwidth[$jn]=$min_len[$jn];   $fwidth[$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 {      } else {
       #step 3. adjustment over minimal + corrections        #step 3. adjustment over minimal + corrections
 ## &Apache::lonnet::logthis("I am in position 3");   my $enlarge_coef=$available_space/$space_needed;
  my $enlarge_coef=$available_space/$space_neeeded;  
  my $acsessive=0;   my $acsessive=0;
  for (my $jn=0;$jn<=$#min_len;$jn++) {   for (my $jn=0;$jn<=$#min_len;$jn++) {
     $adjust[$jn]=$min_len[$jn]*$enlarge_coef;      $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
Line 1935  sub end_table { Line 2269  sub end_table {
  $fwidth[$jn]=$max_len[$jn];   $fwidth[$jn]=$max_len[$jn];
  $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];   $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
  $adjust[$jn]=0;   $adjust[$jn]=0;
   
     }      }
  }   }
  if ($acsessive>0) {   if ($acsessive>0) {
Line 1952  sub end_table { Line 2287  sub end_table {
     $fwidth[$jn]=$adjust[$jn];      $fwidth[$jn]=$adjust[$jn];
  }   }
     }      }
    } else {
       for (my $jn=0;$jn<=$#min_len;$jn++) {
    $fwidth[$jn]=$adjust[$jn];
       }
  }   }
     }      }
  }   }
         #recalculation for the use of all available width if width is defined in %          # use all available width or specified width as if not specified,
         if ($Apache::londefdef::table[-1]{'percent'}==1) {   # the specified width gets defaulted to the available width.
     my $current=0;   
     for (my $i=0;$i<=$#fwidth;$i++) {     my $current=0; 
  $current+=$fwidth[$i];   for (my $i=0;$i<=$#fwidth;$i++) {  
     }      $current+=$fwidth[$i];
     my $coef=$Apache::londefdef::table[-1]{'width'}/$current;   }
     for (my $i=0;$i<=$#fwidth;$i++) {     if ($current == 0) {
  $fwidth[$i]*=$coef;              $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          #removing of empty columns if allowed
         my $permission=&Apache::lonxml::get_param('DropEmptyColumns',$parstack,$safeeval,undef,0);          my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
  if ($permission eq 'yes') {   if ($permission eq 'yes') {
     my @cleaned_table=();      my @cleaned_table=();
             my @cleaned_header=();              my @cleaned_header=();
Line 1985  sub end_table { Line 2327  sub end_table {
     $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;      $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
     @fwidth=@cleaned_header;      @fwidth=@cleaned_header;
  }   }
   
   
  #construct header of the table   #construct header of the table
  my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};   my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
  for (my $in=0;$in<=$#fwidth;$in++) {   for (my $in=0;$in<=$#fwidth;$in++) {
     $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};      $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
  }   }
  $header_of_table .= '}';   $header_of_table .= '}';
   
  #fill the table   #fill the table
  for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {   for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
       my $have_rowspan = 0;
     for (my $jn=0;$jn<=$#fwidth;$jn++) {      for (my $jn=0;$jn<=$#fwidth;$jn++) {
  if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {  
     $output.='\begin{center}';   #-----------------------------------------------------------
  } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {                  #   I think this order of doing things will ensure that
     $output.=' \hfill \llap{'   #   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];   $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
  if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {  
     $output.='\end{center}';   if (($colspan == 1 && $rowspan == 1)   &&
  } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {      (($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') ||
     $output.='} ';       ($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.=' '.$Apache::londefdef::table[-1]{'vinc'};}                  if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
     }      }
     $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';      #  If have_rowspan > 0, and borders are on, then 
       #  we need to do more than put an \hline at the bottom of row.
       #  we need to do the appropriate \cline to ensure that
       #  the spanned rows don't have \hlines through them.
   
       if (($Apache::londefdef::table[-1]{'hinc'} =~ /\\hline/) && $have_rowspan) {
    $output .= ' \\\\ ';
    for (my $jn=0; $jn<=$#fwidth;$jn++) {
       my $rowspan = $Apache::londefdef::table[-1]{'rowspan'}[$in][$jn];
       if ($rowspan ne "^") {
    if (($rowspan <= 1) || ($rowspan eq '_')) {
       my $column = $jn+1;
       $output .= '\cline{'.$column.'-'.$column.'} ';
    }
       }
    }
   
       } else {
    $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
       }
  }   }
  $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\vskip 0 mm ';   # 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) {       if ($#Apache::londefdef::table > 0) {    
     my $inmemory = $Apache::londefdef::table[-1]{'output'};      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;      pop @Apache::londefdef::table;
     push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;      push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
  } else {   } else {
Line 2020  sub end_table { Line 2517  sub end_table {
     undef @Apache::londefdef::table;      undef @Apache::londefdef::table;
  }   }
     }      }
       }
     return $currentstring;      return $currentstring;
 }  }
   
Line 2027  sub end_table { Line 2525  sub end_table {
 sub start_tr {  sub start_tr {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $Apache::londefdef::table[-1]{'row_number'}++;   $Apache::londefdef::table[-1]{'row_number'}++;
Line 2038  sub start_tr { Line 2536  sub start_tr {
     push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';      push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
  }   }
  push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});   push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
    #
    #  Need to save the number of table columns to preserve the max # columns.
    #
    $Apache::londefdef::table[-1]{'prior_columns'}   = $Apache::londefdef::table[-1]{'counter_columns'};
  $Apache::londefdef::table[-1]{'counter_columns'} = -1;   $Apache::londefdef::table[-1]{'counter_columns'} = -1;
  push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];   push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
  push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];   push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
Line 2050  sub start_tr { Line 2552  sub start_tr {
                   
 sub end_tr {  sub end_tr {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close any pending <p> in the row.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring .= $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($Apache::londefdef::TD_redirection) {   if ($Apache::londefdef::TD_redirection) {
     &end_td_tex($parstack,$parser,$safeeval);          &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;      return $currentstring;
 }  }
Line 2065  sub end_tr { Line 2575  sub end_tr {
 sub start_td {  sub start_td {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $Apache::londefdef::TD_redirection = 1;   $Apache::londefdef::TD_redirection = 1;
Line 2111  sub start_td_tex { Line 2621  sub start_td_tex {
   
 sub end_td_tex {  sub end_td_tex {
     my ($parstack,$parser,$safeeval) = @_;      my ($parstack,$parser,$safeeval) = @_;
     my $current_row = $Apache::londefdef::table[-1]{'row_number'};      my $current_row    = $Apache::londefdef::table[-1]{'row_number'};
     my $data=&Apache::lonxml::endredirection();      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);      my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
     if (defined $TeXwidth) {      if (defined $TeXwidth) {
  push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';   for (my $c = 0; $c < $colspan; $c++) {
  push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';      push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
  push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';      push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    }
     } else {      } else {
  if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {   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 $garbage_data=$data;
Line 2133  sub end_td_tex { Line 2688  sub end_td_tex {
  if ($fwidth<$current_length) {$fwidth=$current_length;}   if ($fwidth<$current_length) {$fwidth=$current_length;}
  $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;   $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
     }      }
     push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';      for (my $c = 0; $c < $colspan; $c++) {
     push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;   push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
     push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';   push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
     push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';   push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       }
    } elsif ($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 {     } else {  
     $data=~s/^\s+(\S.*)/$1/;       $data=~s/^\s+(\S.*)/$1/; 
     $data=~s/(.*\S)\s+$/$1/;      $data=~s/(.*\S)\s+$/$1/;
Line 2159  sub end_td_tex { Line 2738  sub end_td_tex {
  $current_length=2.5*&LATEX_length($data);   $current_length=2.5*&LATEX_length($data);
                     my @words=split(/ /,$data);                      my @words=split(/ /,$data);
     foreach my $word (@words) {      foreach my $word (@words) {
  my $lengthword=2.5*&LATEX_length($word);   my $lengthword=2*&LATEX_length($word);
  if ($min_length<$lengthword) {$min_length=$lengthword;}   if ($min_length<$lengthword) {$min_length=$lengthword;}
     }      }
     }      }
     push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';      for (my $c = 0; $c < $colspan; $c++) {
     push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';   push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
     push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;   push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
     push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;   push @ {$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++) {               # Substitute all of the tables nested in this cell in their appropriate places.
     $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;  
  }  
       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;      push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
     return'';  
   
   
   
       #  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 {  sub end_td {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
         $Apache::londefdef::TD_redirection =0;          $Apache::londefdef::TD_redirection =0;
Line 2192  sub end_td { Line 2805  sub end_td {
 sub start_th {  sub start_th {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);   $Apache::londefdef::TD_redirection = 1;
  if ($what_to_push eq '') {   &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
     $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;  
  }  
  push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;  
  $Apache::londefdef::table[-1]{'counter_columns'}++;  
  &Apache::lonxml::startredirection();  
     }       } 
     return $currentstring;      return $currentstring;
 }     }   
            
 sub end_th {  sub tagg_check {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my @ar=@$parstack; 
     if ($target eq 'web') {      for (my $i=$#ar-1;$i>=0;$i--) {
  $currentstring = $token->[2];        if (lc($$tagstack[$i]) eq $good_tag) {
     } elsif ($target eq 'tex') {      &start_th_tex($parstack,$parser,$safeeval);
  my $current_row = $Apache::londefdef::table[-1]{'row_number'};      last;
  my $data=&Apache::lonxml::endredirection();   } elsif (lc($$tagstack[$i]) eq $bad_tag) {
  my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);      splice @ar, $i+1;
  if (defined $TeXwidth) {      &end_th_tex(\@ar,$parser,$safeeval);
     my $current_length=&recalc($TeXwidth);      &start_th_tex($parstack,$parser,$safeeval);
     $current_length=~/(\d+)/;      last;
     $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';  
     $Apache::londefdef::table[-1]{'length'} .= '0,';  
  } else {  
     if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {  
  my $current_length=&recalc($1);  
  $current_length=~/(\d+)/;  
  $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';  
  $Apache::londefdef::table[-1]{'length'} .= '0,';  
     } else {       
  $data=~/^\s*(\S.*)/;  
  $data=$1;  
  $data=~/(.*\S)\s*$/;  
  $data=$1;  
  my $current_length=2*length($data);  
  $Apache::londefdef::table[-1]{'length'} .= $current_length.',';  
  $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';  
     }          
  }   }
  for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {                                      }
       return '';
   }
    
   sub start_th_tex {
       my ($parstack,$parser,$safeeval) = @_;
       my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
       if ($alignchar eq '') {
    $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
       }
       push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
       $Apache::londefdef::table[-1]{'counter_columns'}++;
       my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
       if (defined $TeXwidth) {
    my $current_length=&recalc($TeXwidth);
    $current_length=~/(\d+\.?\d*)/;
    push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
       }
       &Apache::lonxml::startredirection();
       return '';
   }
   
   sub end_th_tex {
       my ($parstack,$parser,$safeeval) = @_;
       my $current_row = $Apache::londefdef::table[-1]{'row_number'};
       my $data=&Apache::lonxml::endredirection();
       my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
       if (defined $TeXwidth) {
    push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       } else {
    if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
       my $garbage_data=$data;
       my $fwidth=0;
               while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
    my $current_length=&recalc($1);
    $current_length=~/(\d+\.?\d*)/;
    if ($fwidth<$1) {$fwidth=$1;}
    $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
       }
               while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
    my $current_length=$1;
    if ($fwidth<$current_length) {$fwidth=$current_length;}
    $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
       }
       push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    } else {  
       $data=~s/^\s+(\S.*)/$1/; 
       $data=~s/(.*\S)\s+$/$1/;
       $data=~s/(\s)+/$1/;
       my ($current_length,$min_length)=(0,0);
       if ($data=~/\\vskip/) {
                   my $newdata=$data;
    $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
    my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
    foreach my $elementdata (@newdata) {
       my $lengthnewdata=2.5*&LATEX_length($elementdata);
       if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
                       my @words=split(/ /,$elementdata);
       foreach my $word (@words) {
    my $lengthword=2.5*&LATEX_length($word);
    if ($min_length<$lengthword) {$min_length=$lengthword;}
       }
    }
       } else {
    $current_length=2.5*&LATEX_length($data);
                       my @words=split(/ /,$data);
       foreach my $word (@words) {
    my $lengthword=2*&LATEX_length($word);
    if ($min_length<$lengthword) {$min_length=$lengthword;}
       }
       }
       push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
    }        
       }
    for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {         
     $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;      $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
  }   }
  $data='\textbf{'.$data.'}';      #make data bold
  @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};      $data='\textbf{'.$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;      return $currentstring;
 }  }
        
 #-- <img> tag (end tag forbidden)  #-- <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 {  sub start_img {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
     my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,      my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
  undef,1);   undef,1);
     if (not $src and ($target eq 'web' or $target eq 'tex')) {       if (! $src && 
  my $inside = &Apache::lonxml::get_all_text("/img",$parser);   ($target eq 'web' || $target eq 'webgrade' || $target eq 'tex')
  &Apache::lonnet::logthis("inside was $inside");   ) { 
    my $inside = &Apache::lonxml::get_all_text("/img",$parser,$style);
  return '';   return '';
     }      }
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;      &Apache::lonxml::extlink($src);
     my $currentstring = '';      my $currentstring = '';
     my $scaling = .3;      my $scaling = .3;
     if ($target eq 'web') {  
  if ($ENV{'browser.imagesuppress'} ne 'on') {     # Render unto browsers that which are the browser's...
     $currentstring.= $token->[4];  
       if ($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 {   } else {
     my $alttag= &Apache::lonxml::get_param      my $alttag = &Apache::lonxml::get_param('alt',$parstack,$safeeval,
  ('alt',$parstack,$safeeval,undef,1);      undef,1);
     unless ($alttag) {      if (!$alttag) {
  $alttag=&Apache::lonmeta::alttag   $alttag = &Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
     ($Apache::lonxml::pwd[-1],$src);     $src);
     }      }
     $currentstring.='[IMAGE: '.$alttag.']';      $currentstring.='[IMAGE: '.$alttag.']';
  }   }
   
    # and render unto TeX that which is LaTeX
   
     } elsif ($target eq 'tex') {      } elsif ($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 bmp/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);   $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
  #if original gif/jpg/png file exist do following:   &Apache::lonxml::debug("path = $path file = $file src = $src");
  if (-e $src) {   if (-e $src) {
     #what is the image size?      &Apache::lonxml::debug("$src exists");
     my $width_param=&image_size($src,$scaling,$parstack,$safeeval);      my ($height_param,$width_param)=
             my ($file,$path)=&file_path($src);    &image_size($origsrc,0.3,$parstack,$safeeval);
     my $newsrc = $src;      my $size;
     $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;      if ($width_param)  { $size.='width='.$width_param.' mm,'; }
     $file=~s/\.(gif|jpg|png)$/.eps/i;      if ($height_param) { $size.='height='.$height_param.' mm]'; }
     #where can we find the picture?      # Default size if not able to extract that (e.g. eps image).
     if (-e $newsrc) {      
  #eps counterpart for image exist       # &Apache::lonnet::logthis("Size = $size");
  if ($path) {      
     $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';      $size='['.$size;
  }      $size=~s/,$/]/; 
     } else {      $currentstring .= '\graphicspath{{'.$path.'}}'
  #there is no eps counterpart for image - check for ps one   .'\includegraphics'.$size.'{'.$file.'} ';
  $newsrc =~ s/\.eps$/\.ps/;      my $closure;
  if (-e $newsrc) {      ($currentstring, $closure) = &align_latex_image($align, 
     #ps counterpart for image exist       $latex_rendering, 
     $file =~ s/\.eps$/\.ps/;      $currentstring, 
     if ($path) {      $width_param, 
  $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';      $height_param);
     }      $currentstring .= $closure;
  } else {  
     #care about eps dynamical generation  
     $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);  
  }  
     }  
  } else {   } else {
       &Apache::lonxml::debug("$src does not exist");
     #original image file doesn't exist so check the alt attribute      #original image file doesn't exist so check the alt attribute
     my $alt =       my $alt = 
  &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);   &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
Line 2307  sub start_img { Line 3054  sub start_img {
  $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);   $alt=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],$src);
     }      }
   
     if ($alt) {      if ($alt) { $currentstring .= ' '.$alt.' '; }
  $currentstring .= ' '.$alt.' ';  
     } else {  
  #<allow> tag will care about replication   
     }  
  }   }
   
    # 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 ($target eq 'edit') {      } elsif ($target eq 'edit') {
           my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
  $currentstring .=&Apache::edit::tag_start($target,$token);   $currentstring .=&Apache::edit::tag_start($target,$token);
  $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).   $currentstring .=&Apache::edit::text_arg('Image Url:','src',$token,70).
     &Apache::edit::browse('src',undef,'alt').' '.      &Apache::edit::browse('src',undef,'alt',$only).' '.
     &Apache::edit::search('src',undef,'alt').'<br />';      &Apache::edit::search('src',undef,'alt').'<br />';
  $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';   $currentstring .=&Apache::edit::text_arg('Description:','alt',$token,70).'<br />';
  $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);   $currentstring .=&Apache::edit::text_arg('width (pixel):','width',$token,5);
  $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';   $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
  $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);   $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
  $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$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();   $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
  my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);   my $src=    &Apache::lonxml::get_param('src',$parstack,$safeeval);
  my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);   my $alt=    &Apache::lonxml::get_param('alt',$parstack,$safeeval);
  my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);   my $width=  &Apache::lonxml::get_param('width',$parstack,$safeeval);
  my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);   my $height= &Apache::lonxml::get_param('height',$parstack,$safeeval);
  $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';  
  if ($width) { $currentstring.=' width="'.$width.'" '; }          if ($token->[2]{'src'}=~/\$/) {
  if ($height) { $currentstring.=' height="'.$height.'" '; }             $currentstring.='Variable image source';
  $currentstring .= ' />';          } else {
      $currentstring .= '<img src="'.$src.'" alt="'.$alt.'" ';
      if ($width) { $currentstring.=' width="'.$width.'" '; }
      if ($height) { $currentstring.=' height="'.$height.'" '; }
      $currentstring .= ' />';
           }
     } elsif ($target eq 'modified') {      } elsif ($target eq 'modified') {
  my $constructtag=&Apache::edit::get_new_args($token,$parstack,   my ($osrc,$owidth,$oheight)=
      $safeeval,'src','alt',      ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
      'TeXwidth','TeXheight',   my $ctag=&Apache::edit::get_new_args($token,$parstack,
      'width','height');       $safeeval,'src','alt','align',
  $src=$token->[2]{'src'};       'TeXwidth','TeXheight', 'TeXwrap',
  if (!$token->[2]{'width'} && !$token->[2]{'height'}) {       'width','height','encrypturl');
     $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);   my ($nsrc,$nwidth,$nheight)=
     &image_replication($src);      ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
     if (-e $src) {   my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
  my $image = Image::Magick->new;   &image_replication($loc);
  my ($width, $height, $size, $format) = $image->Ping($src);   my ($iwidth,$iheight);
  if ($width && $height) {   if (-e $loc) {
     $token->[2]{'width'} =$width;      my $image = Image::Magick->new;
     $token->[2]{'height'}=$height;      $image->Read($loc);
     $constructtag=1;      ($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;$ctag=1;
  }   }
     }      }
  }   }
  if ($constructtag) {$currentstring=&Apache::edit::rebuild_tag($token);}   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;      return $currentstring;
 }  }
   
 sub end_img {  sub end_img {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];   $currentstring = $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '';   $currentstring = '';
Line 2372  sub start_applet { Line 3151  sub start_applet {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
           
     my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);      my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,undef,1);
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$code;      &Apache::lonxml::extlink($code);
       
     my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,      my $archive=&Apache::lonxml::get_param('archive',$parstack,$safeeval,
    undef,1);     undef,1);
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$archive;      &Apache::lonxml::extlink($archive);
       
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  if ($ENV{'browser.appletsuppress'} ne 'on') {   if ($env{'browser.appletsuppress'} ne 'on') {
     $currentstring = $token->[4];      $currentstring = &Apache::lonenc::encrypt_ref($token,
     {'code'=>$code,
      'archive'=>$archive}
     );
  } else {   } else {
     my $alttag= &Apache::lonxml::get_param('alt',$parstack,      my $alttag= &Apache::lonxml::get_param('alt',$parstack,
    $safeeval,undef,1);     $safeeval,undef,1);
Line 2392  sub start_applet { Line 3172  sub start_applet {
     $currentstring='[APPLET: '.$alttag.']';      $currentstring='[APPLET: '.$alttag.']';
  }   }
     } elsif ($target eq 'tex') {      } elsif ($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,   my $alttag= &Apache::lonxml::get_param('alt',$parstack,
        $safeeval,undef,1);         $safeeval,undef,1);
  unless ($alttag) {   unless ($alttag) {
Line 2402  sub start_applet { Line 3205  sub start_applet {
  }   }
  $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.   $currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
     '.}\end{center}';      '.}\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;      return $currentstring;
 }  }
Line 2409  sub start_applet { Line 3223  sub start_applet {
 sub end_applet {  sub end_applet {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];   $currentstring = $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
     }       } 
Line 2420  sub end_applet { Line 3234  sub end_applet {
 sub start_embed {      sub start_embed {    
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);      my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;      &Apache::lonxml::extlink($src);
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  if ($ENV{'browser.embedsuppress'} ne 'on') {   if ($env{'browser.embedsuppress'} ne 'on') {
     $currentstring = $token->[4];      $currentstring=&Apache::lonenc::encrypt_ref($token,{'src'=>$src});
  } else {   } else {
     my $alttag=&Apache::lonxml::get_param      my $alttag=&Apache::lonxml::get_param
  ('alt',$parstack,$safeeval,undef,1);   ('alt',$parstack,$safeeval,undef,1);
Line 2441  sub start_embed { Line 3255  sub start_embed {
 sub end_embed {  sub end_embed {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {        } elsif ($target eq 'tex') {  
     }       } 
Line 2451  sub end_embed { Line 3265  sub end_embed {
 #-- <param> tag (end tag forbidden)  #-- <param> tag (end tag forbidden)
 sub start_param {  sub start_param {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     if (&Apache::lonxml::get_param      if (&Apache::lonxml::get_param('name',$parstack,
  ('name',$parstack,$safeeval,undef,1)=~/^cabbase$/i) {     $safeeval,undef,1)=~/^cabbase$/i) {
  $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=   my $value=&Apache::lonxml::get_param('value',$parstack,
     &Apache::lonxml::get_param('value',$parstack,$safeeval,undef,1);       $safeeval,undef,1);
     }      &Apache::lonxml::extlink($value);
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=         } 
  &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);    
       my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
       &Apache::lonxml::extlink($src);
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        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 ($target eq 'tex') {      } elsif ($target eq 'tex') {
     }       } 
     return $currentstring;      return $currentstring;
Line 2469  sub start_param { Line 3294  sub start_param {
 sub end_param {  sub end_param {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
     }       } 
Line 2480  sub end_param { Line 3305  sub end_param {
 sub start_allow {  sub start_allow {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);      my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
     $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);      &Apache::lonxml::extlink($src);
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=  
  &Apache::lonnet::clutter($src);      if ($target eq 'tex') { &image_replication($src); }
     &image_replication($src);  
     my $result;      my $result;
     if ($target eq 'edit') {      if ($target eq 'edit') {
  $result .=&Apache::edit::tag_start($target,$token);   $result .=&Apache::edit::tag_start($target,$token);
Line 2507  sub end_allow { Line 3331  sub end_allow {
 #-- <frameset>  #-- <frameset>
 sub start_frameset {  sub start_frameset {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = ''; # Close any pending para.
     if ($target eq 'web') {       if ($target eq 'web' || $target eq 'webgrade') { 
  if (!$Apache::lonxml::registered &&   $currentstring = 
     $ENV{'request.state'} eq 'published') {      &Apache::loncommon::start_page($Apache::londefdef::title,
     $currentstring.='<head>'.     $Apache::londefdef::head,
  &Apache::lonmenu::registerurl(undef,$target).'</head>';     {'add_entries'    => $token->[2],
  }      'no_title'       => 1,
  my $onLoad='';      'force_register' => 1,
  foreach my $key (keys(%{$token->[2]})) {      'frameset'       => 1,});
     if ($key =~ /^onload$/i) {  
  $onLoad.=$token->[2]->{$key}.';';  
  delete($token->[2]->{$key});  
     }  
  }  
  $token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;  
  my $onUnload='';  
  foreach my $key (keys(%{$token->[2]})) {  
     if ($key =~ /^onunload$/i) {  
  $onUnload.=$token->[2]->{$key}.';';  
  delete($token->[2]->{$key});  
     }  
  }  
  $token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().  
     ';'.$onUnload;  
   
  $currentstring .= '<'.$token->[1];  
  foreach (keys %{$token->[2]}) {  
     $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';  
  }  
  $currentstring.='>';  
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 2544  sub start_frameset { Line 3348  sub start_frameset {
 sub end_frameset {  sub end_frameset {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];   $currentstring = $token->[2];
     }      }
     return $currentstring;      return $currentstring;
Line 2554  sub end_frameset { Line 3358  sub end_frameset {
 sub start_xmp {  sub start_xmp {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\begin{verbatim}';   $currentstring .= '\begin{verbatim}';
Line 2565  sub start_xmp { Line 3369  sub start_xmp {
 sub end_xmp {  sub end_xmp {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\end{verbatim}';   $currentstring .= '\end{verbatim}';
Line 2576  sub end_xmp { Line 3380  sub end_xmp {
 #-- <pre> (end tag required)  #-- <pre> (end tag required)
 sub start_pre {  sub start_pre {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # close off pending <p>
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\begin{verbatim}';   $currentstring .= '\begin{verbatim}';
    &Apache::lonxml::disable_LaTeX_substitutions();
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 2588  sub start_pre { Line 3393  sub start_pre {
 sub end_pre {  sub end_pre {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= '\end{verbatim}';   $currentstring .= '\end{verbatim}';
    &Apache::lonxml::enable_LaTeX_substitutions();
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 2600  sub end_pre { Line 3406  sub end_pre {
 sub start_insert {  sub start_insert {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);   my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
  $currentstring .= '<b>'.$display.'</b>';;   $currentstring .= '<b>'.$display.'</b>';;
     }      }
Line 2610  sub start_insert { Line 3416  sub start_insert {
 sub end_insert {  sub end_insert {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= '';   $currentstring .= '';
     }      }
     return $currentstring;      return $currentstring;
Line 2620  sub end_insert { Line 3426  sub end_insert {
 sub start_externallink {  sub start_externallink {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);   my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
  $currentstring .= '<b>'.$display.'</b>';;   $currentstring .= '<b>'.$display.'</b>';;
     }      }
Line 2630  sub start_externallink { Line 3436  sub start_externallink {
 sub end_externallink {  sub end_externallink {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring .= '';   $currentstring .= '';
     }      }
     return $currentstring;      return $currentstring;
Line 2639  sub end_externallink { Line 3445  sub end_externallink {
 #-- <blankspace heigth="">  #-- <blankspace heigth="">
 sub start_blankspace {  sub start_blankspace {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # closes off any unclosed <p>
     if ($target eq 'tex') {      if ($target eq 'tex') {
  my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);   my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
  $currentstring .= '\vskip '.$howmuch.' ';   $currentstring .= '\vskip '.$howmuch.' ';
Line 2660  sub end_blankspace { Line 3466  sub end_blankspace {
 sub start_abbr {  sub start_abbr {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2669  sub start_abbr { Line 3475  sub start_abbr {
 sub end_abbr {  sub end_abbr {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2679  sub end_abbr { Line 3485  sub end_abbr {
 sub start_acronym {  sub start_acronym {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2688  sub start_acronym { Line 3494  sub start_acronym {
 sub end_acronym {  sub end_acronym {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2698  sub end_acronym { Line 3504  sub end_acronym {
 sub start_area {  sub start_area {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2707  sub start_area { Line 3513  sub start_area {
 sub end_area {  sub end_area {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2717  sub end_area { Line 3523  sub end_area {
 sub start_base {  sub start_base {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }      }
     return $currentstring;      return $currentstring;
Line 2726  sub start_base { Line 3532  sub start_base {
 sub end_base {  sub end_base {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2736  sub end_base { Line 3542  sub end_base {
 sub start_bdo {  sub start_bdo {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2745  sub start_bdo { Line 3551  sub start_bdo {
 sub end_bdo {  sub end_bdo {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2755  sub end_bdo { Line 3561  sub end_bdo {
 sub start_bgsound {  sub start_bgsound {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2764  sub start_bgsound { Line 3570  sub start_bgsound {
 sub end_bgsound {  sub end_bgsound {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2774  sub end_bgsound { Line 3580  sub end_bgsound {
 sub start_blink {  sub start_blink {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2783  sub start_blink { Line 3589  sub start_blink {
 sub end_blink {  sub end_blink {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2792  sub end_blink { Line 3598  sub end_blink {
 #-- <blockquote> tag (end tag required)  #-- <blockquote> tag (end tag required)
 sub start_blockquote {  sub start_blockquote {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close any unclosed <p>
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     }       } 
       if ($target eq 'tex') {
    $currentstring .= '\begin{quote}';
       }
     return $currentstring;      return $currentstring;
 }  }
   
 sub end_blockquote {  sub end_blockquote {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
       if ($target eq 'tex') {
    $currentstring = '\end{quote}';
       }
     return $currentstring;      return $currentstring;
 }  }
   
Line 2812  sub end_blockquote { Line 3624  sub end_blockquote {
 sub start_button {  sub start_button {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2821  sub start_button { Line 3633  sub start_button {
 sub end_button {  sub end_button {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2831  sub end_button { Line 3643  sub end_button {
 sub start_caption {  sub start_caption {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2840  sub start_caption { Line 3652  sub start_caption {
 sub end_caption {  sub end_caption {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2850  sub end_caption { Line 3662  sub end_caption {
 sub start_col {  sub start_col {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2859  sub start_col { Line 3671  sub start_col {
 sub end_col {  sub end_col {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2869  sub end_col { Line 3681  sub end_col {
 sub start_colgroup {  sub start_colgroup {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2878  sub start_colgroup { Line 3690  sub start_colgroup {
 sub end_colgroup {  sub end_colgroup {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2888  sub end_colgroup { Line 3700  sub end_colgroup {
 sub start_del {  sub start_del {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2897  sub start_del { Line 3709  sub start_del {
 sub end_del {  sub end_del {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2907  sub end_del { Line 3719  sub end_del {
 sub start_fieldset {  sub start_fieldset {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2916  sub start_fieldset { Line 3728  sub start_fieldset {
 sub end_fieldset {  sub end_fieldset {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2926  sub end_fieldset { Line 3738  sub end_fieldset {
 sub start_frame {  sub start_frame {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2935  sub start_frame { Line 3747  sub start_frame {
 sub end_frame {  sub end_frame {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2945  sub end_frame { Line 3757  sub end_frame {
 sub start_iframe {  sub start_iframe {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2954  sub start_iframe { Line 3766  sub start_iframe {
 sub end_iframe {  sub end_iframe {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2964  sub end_iframe { Line 3776  sub end_iframe {
 sub start_ins {  sub start_ins {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2973  sub start_ins { Line 3785  sub start_ins {
 sub end_ins {  sub end_ins {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 2983  sub end_ins { Line 3795  sub end_ins {
 sub start_isindex {  sub start_isindex {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 2992  sub start_isindex { Line 3804  sub start_isindex {
 sub end_isindex {  sub end_isindex {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3002  sub end_isindex { Line 3814  sub end_isindex {
 sub start_keygen {  sub start_keygen {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3011  sub start_keygen { Line 3823  sub start_keygen {
 sub end_keygen {  sub end_keygen {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3021  sub end_keygen { Line 3833  sub end_keygen {
 sub start_label {  sub start_label {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3030  sub start_label { Line 3842  sub start_label {
 sub end_label {  sub end_label {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3040  sub end_label { Line 3852  sub end_label {
 sub start_layer {  sub start_layer {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3049  sub start_layer { Line 3861  sub start_layer {
 sub end_layer {  sub end_layer {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3059  sub end_layer { Line 3871  sub end_layer {
 sub start_legend {  sub start_legend {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3068  sub start_legend { Line 3880  sub start_legend {
 sub end_legend {  sub end_legend {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3076  sub end_legend { Line 3888  sub end_legend {
   
 #-- <link> tag (end tag forbidden)  #-- <link> tag (end tag forbidden)
 sub start_link {  sub start_link {
     my ($target,$token) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
    my $href=&Apache::lonxml::get_param('href',$parstack,$safeeval,
       undef,1);
    &Apache::lonxml::extlink($href);
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3087  sub start_link { Line 3902  sub start_link {
 sub end_link {  sub end_link {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3097  sub end_link { Line 3912  sub end_link {
 sub start_marquee {  sub start_marquee {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3106  sub start_marquee { Line 3921  sub start_marquee {
 sub end_marquee {  sub end_marquee {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3115  sub end_marquee { Line 3930  sub end_marquee {
 #-- <multicol> tag (end tag required)  #-- <multicol> tag (end tag required)
 sub start_multicol {  sub start_multicol {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close any pending <p>
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 3125  sub start_multicol { Line 3940  sub start_multicol {
 sub end_multicol {  sub end_multicol {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3135  sub end_multicol { Line 3950  sub end_multicol {
 sub start_nobr {  sub start_nobr {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }  elsif ($target eq 'tex') {      }  elsif ($target eq 'tex') {
  $currentstring='\mbox{';   $currentstring='\mbox{';
Line 3146  sub start_nobr { Line 3961  sub start_nobr {
 sub end_nobr {  sub end_nobr {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }   elsif ($target eq 'tex') {      }   elsif ($target eq 'tex') {
  $currentstring='}';   $currentstring='}';
Line 3158  sub end_nobr { Line 3973  sub end_nobr {
 sub start_noembed {  sub start_noembed {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3167  sub start_noembed { Line 3982  sub start_noembed {
 sub end_noembed {  sub end_noembed {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3177  sub end_noembed { Line 3992  sub end_noembed {
 sub start_noframes {  sub start_noframes {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3186  sub start_noframes { Line 4001  sub start_noframes {
 sub end_noframes {  sub end_noframes {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3196  sub end_noframes { Line 4011  sub end_noframes {
 sub start_nolayer {  sub start_nolayer {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3205  sub start_nolayer { Line 4020  sub start_nolayer {
 sub end_nolayer {  sub end_nolayer {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3215  sub end_nolayer { Line 4030  sub end_nolayer {
 sub start_noscript {  sub start_noscript {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3224  sub start_noscript { Line 4039  sub start_noscript {
 sub end_noscript {  sub end_noscript {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3234  sub end_noscript { Line 4049  sub end_noscript {
 sub start_object {  sub start_object {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3243  sub start_object { Line 4058  sub start_object {
 sub end_object {  sub end_object {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3253  sub end_object { Line 4068  sub end_object {
 sub start_optgroup {  sub start_optgroup {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3262  sub start_optgroup { Line 4077  sub start_optgroup {
 sub end_optgroup {  sub end_optgroup {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3272  sub end_optgroup { Line 4087  sub end_optgroup {
 sub start_samp {  sub start_samp {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring='\texttt{';   $currentstring='\texttt{';
Line 3283  sub start_samp { Line 4098  sub start_samp {
 sub end_samp {  sub end_samp {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring='}';   $currentstring='}';
Line 3295  sub end_samp { Line 4110  sub end_samp {
 sub start_server {  sub start_server {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3304  sub start_server { Line 4119  sub start_server {
 sub end_server {  sub end_server {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3313  sub end_server { Line 4128  sub end_server {
 #-- <spacer> tag (end tag forbidden)  #-- <spacer> tag (end tag forbidden)
 sub start_spacer {  sub start_spacer {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = &end_p(); # Close off any open <p> tag.
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring .= $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 3323  sub start_spacer { Line 4138  sub start_spacer {
 sub end_spacer {  sub end_spacer {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3333  sub end_spacer { Line 4148  sub end_spacer {
 sub start_span {  sub start_span {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3342  sub start_span { Line 4157  sub start_span {
 sub end_span {  sub end_span {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3352  sub end_span { Line 4167  sub end_span {
 sub start_tbody {  sub start_tbody {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3361  sub start_tbody { Line 4176  sub start_tbody {
 sub end_tbody {  sub end_tbody {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3371  sub end_tbody { Line 4186  sub end_tbody {
 sub start_tfoot {  sub start_tfoot {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3380  sub start_tfoot { Line 4195  sub start_tfoot {
 sub end_tfoot {  sub end_tfoot {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3390  sub end_tfoot { Line 4205  sub end_tfoot {
 sub start_thead {  sub start_thead {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3399  sub start_thead { Line 4214  sub start_thead {
 sub end_thead {  sub end_thead {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3409  sub end_thead { Line 4224  sub end_thead {
 sub start_var {  sub start_var {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\textit{';    $currentstring = '\textit{'; 
Line 3420  sub start_var { Line 4235  sub start_var {
 sub end_var {  sub end_var {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];   $currentstring = $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '}';    $currentstring = '}'; 
Line 3432  sub end_var { Line 4247  sub end_var {
 sub start_wbr {  sub start_wbr {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     }       } 
     return $currentstring;      return $currentstring;
Line 3441  sub start_wbr { Line 4256  sub start_wbr {
 sub end_wbr {  sub end_wbr {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }       } 
     return $currentstring;      return $currentstring;
Line 3450  sub end_wbr { Line 4265  sub end_wbr {
 #-- <hideweboutput> tag  #-- <hideweboutput> tag
 sub start_hideweboutput {  sub start_hideweboutput {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  &Apache::lonxml::startredirection();        &Apache::lonxml::startredirection();     
     }       } 
     return '';      return '';
Line 3459  sub start_hideweboutput { Line 4274  sub start_hideweboutput {
 sub end_hideweboutput {  sub end_hideweboutput {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web' || $target eq 'webgrade') {
  $currentstring = &Apache::lonxml::endredirection();       $currentstring = &Apache::lonxml::endredirection();    
     }       } 
     return '';      return '';
Line 3475  sub image_replication { Line 4290  sub image_replication {
     $pssrc  =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;      $pssrc  =~ s/\.(gif|jpg|jpeg|png)$/.ps/i;
     if (not -e $epssrc && not -e $pssrc) {      if (not -e $epssrc && not -e $pssrc) {
  my $result=&Apache::lonnet::repcopy($epssrc);   my $result=&Apache::lonnet::repcopy($epssrc);
  if ($result ne OK) { &Apache::lonnet::repcopy($pssrc); }   if ($result ne 'ok') { &Apache::lonnet::repcopy($pssrc); }
     }      }
     return '';      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;
   
 sub image_size {  
     my ($src,$scaling,$parstack,$safeeval)=@_;  
     #size of image from gif/jpg/jpeg/png   
     my $image = Image::Magick->new;  
     my $current_figure = $image->Read($src);  
     my $width_param = $image->Get('width') * $scaling;;  
     my $height_param = $image->Get('height') * $scaling;;  
     undef $image;  
     #do we have any specified LaTeX size of the picture?      #do we have any specified LaTeX size of the picture?
     my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);      my $toget='TeXwidth'; 
     my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);      if ($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?      #do we have any specified web size of the picture?
     my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,      my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
    undef,1);     $depth,1);
     if ($TeXwidth ne '') {        if ($TeXwidth) { 
    my $old_width_param=$width_param;
  if ($TeXwidth=~/(\d+)\s*\%/) {   if ($TeXwidth=~/(\d+)\s*\%/) {
     $width_param = $1*$ENV{'form.textwidth'}/100;      $width_param = $1*$env{'form.textwidth'}/100;
  } else {    } else { 
     $width_param = $TeXwidth;      $width_param = $TeXwidth;
  }   }
     } elsif ($TeXheight ne '') {   if ($TeXheight) {
  $width_param = $TeXheight/$height_param*$width_param;      $height_param = $TeXheight;
     } elsif ($width ne '') {   } elsif ($old_width_param) {
  $width_param = $width*$scaling;            $height_param=$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 = $ressrc;
     }      }
     if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}      my $image = Image::Magick->new;
     return $width_param;      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/\.(bmp|gif|png|jpg|jpeg)/i);
       $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.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 {  sub eps_generation {
     my ($src,$file,$width_param) = @_;           my ($src,$file,$width_param) = @_;     
     my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";      my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
     my $temp_file = Apache::File->new('>>'.$filename);       my $temp_file = Apache::File->new('>>'.$filename); 
     print $temp_file "$src\n";      print $temp_file "$src\n";
     my $newsrc = $src;      my $newsrc = $src;
     $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;      $newsrc =~ s/(\.bmp|\.gif|\.jpg|\.jpeg)$/\.eps/i;
     $newsrc=~s/\/home\/httpd\/html\/res//;      $newsrc=~s{/home/httpd/html/res}{};
     $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;      $newsrc=~s{/home/($LONCAPA::username_re)/public_html/}{/$1/};
     $newsrc=~s/\/\.\//\//;      $newsrc=~s{/\./}{/};
     $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;      $newsrc=~s{/([^/]+)\.(ps|eps)}{/};
     return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';      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 {       sub file_path {     
Line 3532  sub file_path { Line 4504  sub file_path {
     }       } 
     return $file,$path;      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 {  sub recalc {
     my $argument = shift;      my $argument = shift;
     if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}      if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
Line 3572  sub LATEX_length { Line 4548  sub LATEX_length {
     $garbage=~s|\\(\w+)\\|\\|g;        $garbage=~s|\\(\w+)\\|\\|g;  
     $garbage=~s|\\(\w+)(\s*)|$2|g;        $garbage=~s|\\(\w+)(\s*)|$2|g;  
     $garbage=~s|\+|11|g;      $garbage=~s|\+|11|g;
   
     &Apache::lonnet::logthis("garbage was just $garbage");  
     my  $value=length($garbage);      my  $value=length($garbage);
     return $value;      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;  1;

Removed from v.1.207  
changed lines
  Added in v.1.390


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