File:  [LON-CAPA] / loncom / xml / londefdef.pm
Revision 1.106.2.2: download - view: text, annotated - select for diffs
Mon Mar 17 17:18:50 2003 UTC (21 years, 2 months ago) by albertel
Branches: version_0_6
CVS tags: version_0_6_2
- backport 1.107 removal of \fbox

    1: # The LearningOnline Network with CAPA
    2: # Tags Default Definition Module 
    3: #
    4: # $Id: londefdef.pm,v 1.106.2.2 2003/03/17 17:18:50 albertel Exp $
    5: # 
    6: #
    7: # Copyright Michigan State University Board of Trustees
    8: #
    9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   10: #
   11: # LON-CAPA is free software; you can redistribute it and/or modify
   12: # it under the terms of the GNU General Public License as published by
   13: # the Free Software Foundation; either version 2 of the License, or
   14: # (at your option) any later version.
   15: #
   16: # LON-CAPA is distributed in the hope that it will be useful,
   17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   19: # GNU General Public License for more details.
   20: #
   21: # You should have received a copy of the GNU General Public License
   22: # along with LON-CAPA; if not, write to the Free Software
   23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   24: #
   25: # /home/httpd/html/adm/gpl.txt
   26: #
   27: # http://www.lon-capa.org/
   28: #
   29: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson. 
   30: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into 
   31: # binary executable programs or libraries distributed by the 
   32: # Michigan State University (the "Licensee"), but any binaries so 
   33: # distributed are hereby licensed only for use in the context
   34: # of a program or computational system for which the Licensee is the 
   35: # primary author or distributor, and which performs substantial 
   36: # additional tasks beyond the translation of (La)TeX into HTML.
   37: # The C source of the Code may not be distributed by the Licensee
   38: # to any other parties under any circumstances.
   39: #
   40: #
   41: # last modified 06/26/00 by Alexander Sakharuk
   42: # 11/6,11/30,02/01/01,5/4 Gerd Kortemeyer
   43: # 01/18 Alex Sakharuk
   44: 
   45: package Apache::londefdef; 
   46: 
   47: use Apache::lonnet;
   48: use strict;
   49: use Apache::lonxml;
   50: use Apache::File();
   51: use Image::Magick;
   52: 
   53: BEGIN {
   54: 
   55:     &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr'));
   56: 
   57: }
   58: 
   59: #======================= TAG SUBROUTINES =====================
   60: #-- <output>
   61: sub start_output {
   62:   my ($target) = @_;
   63:   if ($target eq 'meta') { $Apache::lonxml::metamode--; }
   64:   return '';
   65: }
   66: sub end_output {
   67:   my ($target) = @_;
   68:   if ($target eq 'meta') { $Apache::lonxml::metamode++; }
   69:   return '';
   70: }
   71: #-- <m> tag
   72: sub start_m {
   73:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
   74:   my $currentstring = '';
   75:   if ($target eq 'web') {
   76:     $Apache::lonxml::prevent_entity_encode++;
   77:     my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
   78:     $inside ='\\documentstyle{article}'.$inside;
   79:     &Apache::lonxml::debug("M is starting with:$inside:");
   80:     my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
   81:     if ($eval eq 'on') {
   82:       $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
   83:       #&Apache::lonxml::debug("M is evaulated to:$inside:");
   84:     }
   85:     $currentstring = &Apache::lontexconvert::converted(\$inside);
   86:     if ($Apache::lontexconvert::errorstring) {
   87:       &Apache::lonxml::warning("tth error: ".
   88: 			       $Apache::lontexconvert::errorstring);
   89:       $Apache::lontexconvert::errorstring='';
   90:     }
   91:     #&Apache::lonxml::debug("M is ends with:$currentstring:");
   92:   } elsif ($target eq 'tex') {
   93:     $currentstring = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
   94:     if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
   95:   } else {
   96:     my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
   97:   }
   98:   return $currentstring;
   99: }
  100: sub end_m {
  101:   my ($target,$token) = @_;
  102:   my $currentstring = '';
  103:   if ($target eq 'web') {
  104:     $Apache::lonxml::prevent_entity_encode--;
  105:   } elsif ($target eq 'tex') {
  106:     $currentstring = "";
  107:   } elsif ($target eq 'meta') {
  108:   }
  109:   return $currentstring;
  110: }
  111: 
  112: sub start_tthoption {
  113:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
  114:   my $result;
  115:   if ($target eq 'web') {
  116:       my $inside = &Apache::lonxml::get_all_text("/tthoption",$parser);
  117:       $inside=~s/^\s*//;
  118:       if ($ENV{'browser.mathml'}) {
  119: 	  &tth::ttmoptions($inside);
  120:       } else {
  121: 	  &tth::tthoptions($inside);
  122:       }
  123:   }
  124:   return $result;
  125: }
  126: 
  127: sub end_tthoption {
  128:   my ($target,$token) = @_;
  129:   my $result;
  130:   return $result;
  131: }
  132: 
  133: #-- <html> tag    
  134: sub start_html {
  135:     my ($target,$token) = @_;
  136:     my $currentstring = '';
  137:     if ($ENV{'browser.mathml'}) {
  138: 	&tth::ttminit();
  139: 	if ($ENV{'browser.unicode'}) {
  140: 	    &tth::ttmoptions('-L -u1');
  141: 	} else {
  142: 	    &tth::ttmoptions('-L -u0');
  143: 	}
  144:     } else {
  145: 	&tth::tthinit();
  146: 	if ($ENV{'browser.unicode'}) {
  147: 	    &tth::tthoptions('-L -u1');
  148: 	} else {
  149: 	    &tth::tthoptions('-L -u0');
  150: 	}
  151:     }
  152:     if ($target eq 'web') {
  153: 	$currentstring = &Apache::lonxml::xmlbegin().
  154: 	    &Apache::lonxml::fontsettings();     
  155:     } elsif ($target eq 'tex') {
  156: 	@Apache::londefdef::table = ();
  157: 	$currentstring .= '\documentclass[letterpaper]{article}
  158:                                  \newcommand{\keephidden}[1]{}
  159:                                  \renewcommand{\deg}{$^{\circ}$}
  160:                                  \usepackage[dvips]{graphicx}
  161:                                  \usepackage{epsfig}\usepackage{calc}
  162:                                  \newenvironment{choicelist}{\begin{enumerate}}{\end{enumerate}}';
  163:     }
  164:     return $currentstring;
  165: }
  166:         sub end_html {
  167: 	    my ($target,$token) = @_;
  168:             my $currentstring = '';
  169:             if ($target eq 'web') {
  170: 		$currentstring = &Apache::lonxml::xmlend();
  171: 	    }
  172: 	   return $currentstring;
  173: 	}
  174: #-- <head> tag
  175:       sub start_head {
  176: 	    my ($target,$token) = @_;
  177:             my $currentstring = '';
  178:             if ($target eq 'web') {
  179:               $currentstring = $token->[4];     
  180: 	    } 
  181: 	   return $currentstring;
  182: 	}
  183:         sub end_head {
  184: 	    my ($target,$token) = @_;
  185:             my $currentstring = '';
  186:             if ($target eq 'web') {
  187:               $currentstring = &Apache::lonxml::registerurl(undef,$target).
  188:                                $token->[2];    
  189:             } 
  190: 	   return $currentstring;
  191: 	}
  192: #-- <map> tag
  193:       sub start_map {
  194: 	    my ($target,$token) = @_;
  195:             my $currentstring = '';
  196:             if ($target eq 'web') {
  197:               $currentstring = $token->[4];     
  198: 	    } 
  199: 	   return $currentstring;
  200: 	}
  201:         sub end_map {
  202: 	    my ($target,$token) = @_;
  203:             my $currentstring = '';
  204:             if ($target eq 'web') {
  205:               $currentstring = $token->[2];    
  206:             } 
  207: 	   return $currentstring;
  208: 	}
  209: #-- <select> tag
  210:       sub start_select {
  211: 	    my ($target,$token) = @_;
  212:             my $currentstring = '';
  213:             if ($target eq 'web') {
  214:               $currentstring = $token->[4];     
  215: 	    } 
  216: 	   return $currentstring;
  217: 	}
  218:         sub end_select {
  219: 	    my ($target,$token) = @_;
  220:             my $currentstring = '';
  221:             if ($target eq 'web') {
  222:               $currentstring = $token->[2];    
  223:             } 
  224: 	   return $currentstring;
  225: 	}
  226: #-- <option> tag
  227:       sub start_option {
  228: 	    my ($target,$token) = @_;
  229:             my $currentstring = '';
  230:             if ($target eq 'web') {
  231:               $currentstring = $token->[4];     
  232: 	    } 
  233: 	   return $currentstring;
  234: 	}
  235:         sub end_option {
  236: 	    my ($target,$token) = @_;
  237:             my $currentstring = '';
  238:             if ($target eq 'web') {
  239:               $currentstring = $token->[2];    
  240:             } 
  241: 	   return $currentstring;
  242: 	}
  243: #-- <input> tag
  244:       sub start_input {
  245: 	    my ($target,$token) = @_;
  246:             my $currentstring = '';
  247:             if ($target eq 'web') {
  248:               $currentstring = $token->[4];     
  249: 	    } 
  250: 	   return $currentstring;
  251: 	}
  252:         sub end_input {
  253: 	    my ($target,$token) = @_;
  254:             my $currentstring = '';
  255:             if ($target eq 'web') {
  256:               $currentstring = $token->[2];    
  257:             } 
  258: 	   return $currentstring;
  259: 	}
  260: #-- <textarea> tag
  261:       sub start_textarea {
  262: 	    my ($target,$token) = @_;
  263:             my $currentstring = '';
  264:             if ($target eq 'web') {
  265:               $currentstring = $token->[4];     
  266: 	    } 
  267: 	   return $currentstring;
  268: 	}
  269:         sub end_textarea {
  270: 	    my ($target,$token) = @_;
  271:             my $currentstring = '';
  272:             if ($target eq 'web') {
  273:               $currentstring = $token->[2];    
  274:             } 
  275: 	   return $currentstring;
  276: 	}
  277: #-- <form> tag
  278:       sub start_form {
  279: 	    my ($target,$token) = @_;
  280:             my $currentstring = '';
  281:             if ($target eq 'web') {
  282:               $currentstring = $token->[4];     
  283: 	    } 
  284: 	   return $currentstring;
  285: 	}
  286:         sub end_form {
  287: 	    my ($target,$token) = @_;
  288:             my $currentstring = '';
  289:             if ($target eq 'web') {
  290:               $currentstring = $token->[2];    
  291:             } 
  292: 	   return $currentstring;
  293: 	}
  294: #-- <title> tag
  295:       sub start_title {
  296: 	    my ($target,$token) = @_;
  297:             my $currentstring = '';
  298:             if ($target eq 'web') {
  299:               $currentstring = $token->[4];     
  300: 	    } elsif ($target eq 'tex') {
  301:               $currentstring .= '\keephidden{' 
  302: 	    }
  303:             if ($target eq 'meta') {
  304: 		$currentstring='<title>';
  305:                 &start_output();
  306:             }
  307: 	   return $currentstring;
  308: 	}
  309:         sub end_title {
  310: 	    my ($target,$token) = @_;
  311:             my $currentstring = '';
  312:             if ($target eq 'web') {
  313:               $currentstring = $token->[2];    
  314:             } elsif ($target eq 'tex') {
  315:               $currentstring .= '}';
  316: 	    }  
  317:             if ($target eq 'meta') {
  318:                &end_output();
  319:                $currentstring='</title>';
  320:             } 
  321: 	   return $currentstring;
  322: 	}
  323: #-- <meta> tag
  324:       sub start_meta {
  325: 	    my ($target,$token,$tagstack,$parstack,$parser) = @_;
  326:             my $currentstring = '';
  327:             if ($target eq 'web') {
  328: 	      my $args='';
  329: 	      if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
  330: 	      if ($args eq '') {
  331: 		&Apache::lonxml::get_all_text("/meta",$$parser[$#$parser]);
  332: 	      } else {
  333: 		$currentstring = $token->[4];
  334: 	      }
  335: 	    }
  336:             if ($target eq 'meta') {
  337: 		unless ($token->[2]->{'http-equiv'}) {
  338: 		    my $name=$token->[2]->{'name'};
  339:                     $name=~tr/A-Z/a-z/;
  340:                     $name=~s/\s/\_/g;
  341:                     if ($name) {
  342:                        $currentstring='<'.$name.'>'.
  343:                                          $token->[2]->{'content'}.
  344: 			              '</'.$name.'>';
  345: 		    }
  346:                 }
  347: 	    }
  348: 	   return $currentstring;
  349: 	}
  350:       sub end_meta {
  351: 	my ($target,$token,$tagstack,$parstack,$parser) = @_;
  352: 	my $currentstring = '';
  353: 	if ($target eq 'web') {
  354: 	  my $args='';
  355: 	  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
  356: 	  if ($args ne '') {
  357: 	    $currentstring = $token->[4];
  358: 	  }
  359: 	} 
  360: 	return $currentstring;
  361:       }
  362: #-- <body> tag
  363:         sub start_body {
  364:             my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
  365:             my $currentstring = '';
  366:             if ($target eq 'web') {
  367: 	      if (!$Apache::lonxml::registered) {
  368: 		$currentstring.='<head>'.
  369: 		    &Apache::lonxml::registerurl(undef,$target).'</head>';
  370: 	      }
  371: 	      my $onLoad='';
  372: 	      foreach my $key (keys(%{$token->[2]})) {
  373: 		if ($key =~ /^onload$/i) {
  374: 		  $onLoad.=$token->[2]->{$key}.';';
  375: 		  delete($token->[2]->{$key});
  376: 		}
  377: 	      }
  378: 	      $token->[2]->{'onLoad'}=&Apache::lonxml::loadevents().
  379: 		                       ';'.$onLoad;
  380: 	      my $onUnload='';
  381: 	      foreach my $key (keys(%{$token->[2]})) {
  382: 		if ($key =~ /^onunload$/i) {
  383: 		  $onUnload.=$token->[2]->{$key}.';';
  384: 		  delete($token->[2]->{$key});
  385: 		}
  386: 	      }
  387: 	      $token->[2]->{'onUnload'}=&Apache::lonxml::unloadevents().
  388: 		                         ';'.$onUnload;
  389: 
  390: 	      $currentstring .= '<'.$token->[1];
  391: 	      foreach (keys %{$token->[2]}) {
  392: 	      	$currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
  393: 	      }
  394: 	      $currentstring.='>';
  395: 	      if ($ENV{'request.state'} ne 'published') {
  396: 		$currentstring.=(<<EDITBUTTON);
  397: 		<form method="post">
  398: 		<input type="submit" name="editmode" value="Edit" />
  399: 		</form>
  400: EDITBUTTON
  401: 	      }
  402:        	    } elsif ($target eq 'tex') {
  403:               $currentstring = '\begin{document}';  
  404: 	    } 
  405: 	   return $currentstring;
  406: 	}
  407:         sub end_body {
  408: 	    my ($target,$token) = @_;
  409:             my $currentstring = '';
  410:             if ($target eq 'web') {
  411:               $currentstring = $token->[2];     
  412: 	    } elsif ($target eq 'tex') {
  413:               $currentstring = '\end{document}';  
  414: 	    } 
  415: 	   return $currentstring;
  416: 	}
  417: #-- <center> tag
  418:         sub start_center {
  419: 	    my ($target,$token) = @_;
  420:             my $currentstring = '';
  421:             if ($target eq 'web') {
  422:               $currentstring = $token->[4];     
  423: 	    } elsif ($target eq 'tex') {
  424:               $currentstring = '\begin{center}';  
  425: 	    }  elsif ($target eq 'latexsource') {
  426:               $currentstring = '\begin{center}';  
  427: 	    } 
  428: 	   return $currentstring;
  429: 	}
  430:         sub end_center {
  431: 	    my ($target,$token) = @_;
  432:             my $currentstring = '';
  433:             if ($target eq 'web') {
  434:               $currentstring = $token->[2];     
  435: 	    } elsif ($target eq 'tex') {
  436:               $currentstring = '\end{center}';  
  437: 	    }  elsif ($target eq 'latexsource') {
  438:               $currentstring = '\end{center}';  
  439: 	    } 
  440: 	   return $currentstring;
  441: 	}
  442: #-- <b> tag
  443:         sub start_b {
  444: 	    my ($target,$token) = @_;
  445:             my $currentstring = '';
  446:             if ($target eq 'web') {
  447:               $currentstring = $token->[4];     
  448: 	    } elsif ($target eq 'tex') {
  449:               $currentstring = '\textbf{';  
  450: 	    }  elsif ($target eq 'latexsource') {
  451:               $currentstring = '\textbf{';  
  452: 	    } 
  453: 	   return $currentstring;
  454: 	}
  455:         sub end_b {
  456: 	    my ($target,$token) = @_;
  457:             my $currentstring = '';
  458:             if ($target eq 'web') {
  459:               $currentstring = $token->[2];     
  460: 	    } elsif ($target eq 'tex') {
  461:               $currentstring = '}';  
  462: 
  463: 	    } elsif ($target eq 'latexsource') {
  464:               $currentstring = '}';  
  465: 	    } 
  466: 	   return $currentstring;
  467: 	}
  468: #-- <strong> tag
  469:         sub start_strong {
  470: 	    my ($target,$token) = @_;
  471:             my $currentstring = '';
  472:             if ($target eq 'web') {
  473:               $currentstring = $token->[4];     
  474: 	    } elsif ($target eq 'tex') {
  475:               $currentstring = '\textbf{';  
  476: 	    } elsif ($target eq 'latexsource') {
  477:               $currentstring = '\textbf{';  
  478: 	    } 
  479: 	   return $currentstring;
  480: 	}
  481:         sub end_strong {
  482: 	    my ($target,$token) = @_;
  483:             my $currentstring = '';
  484:             if ($target eq 'web') {
  485: 
  486:               $currentstring = $token->[2];     
  487: 	    } elsif ($target eq 'tex') {
  488:               $currentstring = '}';  
  489: 	    }  elsif ($target eq 'latexsource') {
  490:               $currentstring = '}';  
  491: 	    } 
  492: 	   return $currentstring;
  493: 	}
  494: #-- <h1> tag
  495:         sub start_h1 {
  496: 	    my ($target,$token) = @_;
  497:             my $currentstring = '';
  498:             if ($target eq 'web') {
  499: 	       $currentstring .= $token->[4];
  500: 	    } elsif ($target eq 'tex') {
  501: 		$currentstring .= '{\large \textbf{';
  502: 	    } elsif ($target eq 'meta') {
  503: 		$currentstring='<subject>';
  504:                 &start_output();
  505:             }
  506:            return $currentstring;
  507: 	}
  508:         sub end_h1 {
  509: 	    my ($target,$token) = @_;
  510:             my $currentstring = '';
  511:             if ($target eq 'web') {
  512: 	       $currentstring .= $token->[2];
  513: 	    } elsif ($target eq 'tex') {
  514: 		$currentstring .= '}}';
  515: 	    } elsif ($target eq 'meta') {
  516:                 &end_output();
  517: 		$currentstring='</subject>';
  518:             } 
  519:            return $currentstring;
  520: 	}
  521: #-- <h2> tag
  522:         sub start_h2 {
  523: 	    my ($target,$token) = @_;
  524:             my $currentstring = '';
  525:             if ($target eq 'web') {
  526: 	       $currentstring .= $token->[4];
  527: 	    } elsif ($target eq 'tex') {
  528: 		$currentstring .= '{\large \textbf{';
  529: 	    } 
  530:            return $currentstring;
  531: 	}
  532:         sub end_h2 {
  533: 	    my ($target,$token) = @_;
  534:             my $currentstring = '';
  535:             if ($target eq 'web') {
  536: 	       $currentstring .= $token->[2];
  537: 	    } elsif ($target eq 'tex') {
  538: 		$currentstring .= '}}';
  539: 	    } 
  540:            return $currentstring;
  541: 	}
  542: #-- <h3> tag
  543:         sub start_h3 {
  544: 	    my ($target,$token) = @_;
  545:             my $currentstring = '';
  546:             if ($target eq 'web') {
  547: 	       $currentstring .= $token->[4];
  548: 	    } elsif ($target eq 'tex') {
  549: 		$currentstring .= '{\large \textbf{';
  550: 	    } 
  551:            return $currentstring;
  552: 	}
  553:         sub end_h3 {
  554: 	    my ($target,$token) = @_;
  555:             my $currentstring = '';
  556:             if ($target eq 'web') {
  557: 	       $currentstring .= $token->[2];
  558: 	    } elsif ($target eq 'tex') {
  559: 		$currentstring .= '}}';
  560: 	    } 
  561:            return $currentstring;
  562: 	}
  563: #-- <h4> tag
  564:         sub start_h4 {
  565: 	    my ($target,$token) = @_;
  566:             my $currentstring = '';
  567:             if ($target eq 'web') {
  568: 	       $currentstring .= $token->[4];
  569: 	    } elsif ($target eq 'tex') {
  570: 		$currentstring .= '{\large \textbf{';
  571: 	    } 
  572:            return $currentstring;
  573: 	}
  574:         sub end_h4 {
  575: 	    my ($target,$token) = @_;
  576:             my $currentstring = '';
  577:             if ($target eq 'web') {
  578: 	       $currentstring .= $token->[2];
  579: 	    } elsif ($target eq 'tex') {
  580: 		$currentstring .= '}}';
  581: 	    } 
  582:            return $currentstring;
  583: 	}
  584: #-- <h5> tag
  585:         sub start_h5 {
  586: 	    my ($target,$token) = @_;
  587:             my $currentstring = '';
  588:             if ($target eq 'web') {
  589: 	       $currentstring .= $token->[4];
  590: 	    } elsif ($target eq 'tex') {
  591: 		$currentstring .= '{\large \textbf{';
  592: 	    } 
  593:            return $currentstring;
  594: 	}
  595:         sub end_h5 {
  596: 	    my ($target,$token) = @_;
  597:             my $currentstring = '';
  598:             if ($target eq 'web') {
  599: 	       $currentstring .= $token->[2];
  600: 	    } elsif ($target eq 'tex') {
  601: 		$currentstring .= '}}';
  602: 	    } 
  603:            return $currentstring;
  604: 	}
  605: #-- <h6> tag
  606:         sub start_h6 {
  607: 	    my ($target,$token) = @_;
  608:             my $currentstring = '';
  609:             if ($target eq 'web') {
  610: 	       $currentstring .= $token->[4];
  611: 	    } elsif ($target eq 'tex') {
  612: 		$currentstring .= '{\large \textbf{';
  613: 	    } 
  614:            return $currentstring;
  615: 	}
  616:         sub end_h6 {
  617: 	    my ($target,$token) = @_;
  618:             my $currentstring = '';
  619:             if ($target eq 'web') {
  620: 	       $currentstring .= $token->[2];
  621: 	    } elsif ($target eq 'tex') {
  622: 		$currentstring .= '}}';
  623: 	    } 
  624:            return $currentstring;
  625: 	}
  626: #--- <cite> tag
  627:         sub start_cite {
  628: 	    my ($target,$token) = @_;
  629:             my $currentstring = '';
  630:             if ($target eq 'web') {
  631: 	       $currentstring .= $token->[4];
  632: 	    } elsif ($target eq 'tex') {
  633: 		$currentstring .= "\\textit{";
  634: 	    }  elsif ($target eq 'latexsource') {
  635: 		$currentstring .= "\\textit{";
  636: 	    } 
  637:            return $currentstring;
  638: 	}
  639:         sub end_cite {
  640: 	    my ($target,$token) = @_;
  641:             my $currentstring = '';
  642:             if ($target eq 'web') {
  643: 	       $currentstring .= $token->[2];
  644: 	    } elsif ($target eq 'tex') {
  645: 		$currentstring .= "}";
  646: 	    }  elsif ($target eq 'latexsource') {
  647: 		$currentstring .= "}";
  648: 	    } 
  649:            return $currentstring;
  650: 	}
  651: #-- <i> tag
  652:         sub start_i {
  653: 	    my ($target,$token) = @_;
  654:             my $currentstring = '';
  655:             if ($target eq 'web') {
  656: 	       $currentstring .= $token->[4];
  657: 	    } elsif ($target eq 'tex') {
  658: 		$currentstring .= '\textit{';
  659: 	    }  elsif ($target eq 'latexsource') {
  660: 		$currentstring .= '\textit{';
  661: 	    } 
  662:            return $currentstring;
  663: 	}
  664:         sub end_i {
  665: 	    my ($target,$token) = @_;
  666:             my $currentstring = '';
  667:             if ($target eq 'web') {
  668: 	       $currentstring .= $token->[2];
  669: 	    } elsif ($target eq 'tex') {
  670: 		$currentstring .= '}';
  671: 	    } elsif ($target eq 'latexsource') {
  672: 		$currentstring .= '}';
  673: 	    } 
  674:            return $currentstring;
  675: 	}
  676: #-- <address> tag
  677:         sub start_address {
  678: 	    my ($target,$token) = @_;
  679:             my $currentstring = '';
  680:             if ($target eq 'web') {
  681: 	       $currentstring .= $token->[4];
  682: 	    } elsif ($target eq 'tex') {
  683: 		$currentstring .= "\\textit{";
  684: 	    } elsif ($target eq 'latexsource') {
  685: 		$currentstring .= "\\textit{";
  686: 	    } 
  687:            return $currentstring;
  688: 	}
  689:         sub end_address {
  690: 	    my ($target,$token) = @_;
  691:             my $currentstring = '';
  692:             if ($target eq 'web') {
  693: 	       $currentstring .= $token->[2];
  694: 	    } elsif ($target eq 'tex') {
  695: 		$currentstring .= "}";
  696: 	    } elsif ($target eq 'latexsource') {
  697: 		$currentstring .= "}";
  698: 	    }
  699:            return $currentstring;
  700: 	}
  701: #-- <dfn> tag
  702:         sub start_dfn {
  703: 	    my ($target,$token) = @_;
  704:             my $currentstring = '';
  705:             if ($target eq 'web') {
  706: 	       $currentstring .= $token->[4];
  707: 	    } elsif ($target eq 'tex') {
  708: 		$currentstring .= "\\textit{";
  709: 	    } elsif ($target eq 'latexsource') {
  710: 		$currentstring .= "\\textit{";
  711: 	    } 
  712:            return $currentstring;
  713: 	}
  714:         sub end_dfn {
  715: 	    my ($target,$token) = @_;
  716:             my $currentstring = '';
  717:             if ($target eq 'web') {
  718: 	       $currentstring .= $token->[2];
  719: 	    } elsif ($target eq 'tex') {
  720: 		$currentstring .= "}";
  721: 	    } elsif ($target eq 'latexsource') {
  722: 		$currentstring .= "}";
  723: 	    } 
  724:            return $currentstring;
  725: 	}
  726: #-- <tt> tag
  727:         sub start_tt {
  728: 	    my ($target,$token) = @_;
  729:             my $currentstring = '';
  730:             if ($target eq 'web') {
  731: 	       $currentstring .= $token->[4];
  732: 	    } elsif ($target eq 'tex') {
  733: 		$currentstring .= '\texttt{';
  734: 	    } elsif ($target eq 'latexsource') {
  735: 		$currentstring .= '\texttt{';
  736: 	    } 
  737:            return $currentstring;
  738: 	}
  739:         sub end_tt {
  740: 	    my ($target,$token) = @_;
  741:             my $currentstring = '';
  742:             if ($target eq 'web') {
  743: 	       $currentstring .= $token->[2];
  744: 	    } elsif ($target eq 'tex') {
  745: 		$currentstring .= '}';
  746: 	    } elsif ($target eq 'latexsource') {
  747: 		$currentstring .= '}';
  748: 	    }
  749:            return $currentstring;
  750: 	}
  751: #-- <kbd> tag
  752:         sub start_kbd {
  753: 	    my ($target,$token) = @_;
  754:             my $currentstring = '';
  755:             if ($target eq 'web') {
  756: 	       $currentstring .= $token->[4];
  757: 	    } elsif ($target eq 'tex') {
  758: 		$currentstring .= "\\texttt";
  759: 	    } elsif ($target eq 'latexsource') {
  760: 		$currentstring .= "\\texttt{";
  761: 	    } 
  762:            return $currentstring;
  763: 	}
  764:         sub end_kbd {
  765: 	    my ($target,$token) = @_;
  766:             my $currentstring = '';
  767:             if ($target eq 'web') {
  768: 	       $currentstring .= $token->[2];
  769: 	    } elsif ($target eq 'tex') {
  770: 		$currentstring .= "}";
  771: 	    } elsif ($target eq 'latexsource') {
  772: 		$currentstring .= "}";
  773: 	    } 
  774:            return $currentstring;
  775: 	}
  776: #-- <code> tag
  777:         sub start_code {
  778: 	    my ($target,$token) = @_;
  779:             my $currentstring = '';
  780:             if ($target eq 'web') {
  781: 	       $currentstring .= $token->[4];
  782: 	    } elsif ($target eq 'tex') {
  783: 		$currentstring .= '\texttt{';
  784: 	    } 
  785:            return $currentstring;
  786: 	}
  787:         sub end_code {
  788: 	    my ($target,$token) = @_;
  789:             my $currentstring = '';
  790:             if ($target eq 'web') {
  791: 	       $currentstring .= $token->[2];
  792: 	    } elsif ($target eq 'tex') {
  793: 		$currentstring .= '}';
  794: 	    } 
  795:            return $currentstring;
  796: 	}
  797: #-- <em> tag
  798:         sub start_em {
  799: 	    my ($target,$token) = @_;
  800:             my $currentstring = '';
  801:             if ($target eq 'web') {
  802: 	       $currentstring .= $token->[4];
  803: 	    } elsif ($target eq 'tex') {
  804: 		$currentstring .= '\emph{';
  805: 	    } elsif ($target eq 'latexsource') {
  806: 		$currentstring .= '\emph{';
  807: 	    } 
  808:            return $currentstring;
  809: 	}
  810:         sub end_em {
  811: 	    my ($target,$token) = @_;
  812:             my $currentstring = '';
  813:             if ($target eq 'web') {
  814: 	       $currentstring .= $token->[2];
  815: 	    } elsif ($target eq 'tex') {
  816: 		$currentstring .= '}';
  817: 	    } elsif ($target eq 'latexsource') {
  818: 		$currentstring .= '}';
  819: 	    }  
  820:            return $currentstring;
  821: 	}
  822: #-- <q> tag
  823:         sub start_q {
  824: 	    my ($target,$token) = @_;
  825:             my $currentstring = '';
  826:             if ($target eq 'web') {
  827: 	       $currentstring .= $token->[4];
  828: 	    } elsif ($target eq 'tex') {
  829: 		$currentstring .= "\\emph{";
  830: 	    }  elsif ($target eq 'latexsource') {
  831: 		$currentstring .= "\\emph{";
  832: 	    }
  833:            return $currentstring;
  834: 	}
  835:         sub end_q {
  836: 	    my ($target,$token) = @_;
  837:             my $currentstring = '';
  838:             if ($target eq 'web') {
  839: 	       $currentstring .= $token->[2];
  840: 	    } elsif ($target eq 'tex') {
  841: 		$currentstring .= "}";
  842: 	    } elsif ($target eq 'latexsource') {
  843: 		$currentstring .= "}";
  844: 	    }  
  845:            return $currentstring;
  846: 	}
  847: #-- <p> tag
  848:         sub start_p {
  849: 	    my ($target,$token) = @_;
  850:             my $currentstring = '';
  851:             if ($target eq 'web') {
  852: 	       $currentstring .= $token->[4];
  853: 	    } elsif ($target eq 'tex') {
  854: 		$currentstring .= '{\par ';
  855: 	    } elsif ($target eq 'latexsource') {
  856: 		$currentstring .= '{\par ';
  857: 	    } 
  858:            return $currentstring;
  859: 	}
  860:         sub end_p {
  861: 	    my ($target,$token) = @_;
  862:             my $currentstring = '';
  863:             if ($target eq 'web') {
  864: 	       $currentstring .= $token->[2];
  865: 	    } elsif ($target eq 'tex') {
  866: 	        $currentstring .= '}';
  867:             } elsif ($target eq 'latexsource') {
  868: 	        $currentstring .= '}';
  869:             }
  870:            return $currentstring;
  871: 	}
  872: #-- <br> tag
  873:         sub start_br {
  874: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  875:             my $currentstring = '';
  876:             if ($target eq 'web') {
  877: 	       $currentstring .= $token->[4];
  878: 	    } elsif ($target eq 'tex') {
  879: 		if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
  880: 		    $currentstring .= '\vskip 0.2 mm';
  881: 		}
  882: 	    } elsif ($target eq 'latexsource') {
  883: 		$currentstring .= '\\';
  884: 	    } 
  885:            return $currentstring;
  886: 	}
  887:         sub end_br {
  888: 	    my ($target,$token) = @_;
  889:             my $currentstring = '';
  890:             if ($target eq 'web') {
  891: 	       $currentstring .= $token->[2];
  892: 	    }
  893:            return $currentstring;
  894: 	}
  895: #-- <big> tag
  896:         sub start_big {
  897: 	    my ($target,$token) = @_;
  898:             my $currentstring = '';
  899:             if ($target eq 'web') {
  900: 	       $currentstring .= $token->[4];
  901: 	    } elsif ($target eq 'tex') {
  902: 		$currentstring .= '\large{';
  903: 	    } elsif ($target eq 'latexsource') {
  904: 		$currentstring .= '{\Large ';
  905: 	    }  
  906:            return $currentstring;
  907: 	}
  908:         sub end_big {
  909: 	    my ($target,$token) = @_;
  910:             my $currentstring = '';
  911:             if ($target eq 'web') {
  912: 	       $currentstring .= $token->[2];
  913: 	    } elsif ($target eq 'tex') {
  914: 	        $currentstring .= '}';
  915:             } elsif ($target eq 'latexsource') {
  916: 	        $currentstring .= '}';
  917:             }
  918:            return $currentstring;
  919: 	}
  920: #-- <small> tag
  921:         sub start_small {
  922: 	    my ($target,$token) = @_;
  923:             my $currentstring = '';
  924:             if ($target eq 'web') {
  925: 	       $currentstring .= $token->[4];
  926: 	    } elsif ($target eq 'tex') {
  927: 		$currentstring .= '{\footnotesize ';
  928: 	    } elsif ($target eq 'latexsource') {
  929: 		$currentstring .= '{\footnotesize ';
  930: 	    } 
  931:            return $currentstring;
  932: 	}
  933:         sub end_small {
  934: 	    my ($target,$token) = @_;
  935:             my $currentstring = '';
  936:             if ($target eq 'web') {
  937: 	       $currentstring .= $token->[2];
  938: 	    } elsif ($target eq 'tex') {
  939: 	        $currentstring .= '}';
  940:             } elsif ($target eq 'latexsource') {
  941: 	        $currentstring .= '}';
  942:             }
  943:            return $currentstring;
  944: 	}
  945: #-- <basefont> tag
  946:       sub start_basefont {
  947: 	my ($target,$token) = @_;
  948: 	my $currentstring = '';
  949: 	if ($target eq 'web') {
  950: 	  $currentstring = $token->[4];     
  951: 	} 
  952: 	return $currentstring;
  953:       }
  954:       sub end_basefont {
  955: 	my ($target,$token) = @_;
  956: 	my $currentstring = '';
  957: 	if ($target eq 'web') {
  958: 	  $currentstring = $token->[4];     
  959: 	} 
  960: 	return $currentstring;
  961:       }
  962: #-- <font> tag
  963:          sub start_font {
  964: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  965:             my $currentstring = '';
  966:             if ($target eq 'web') {
  967: 	      my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
  968: 	      if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode++;}
  969:               $currentstring = $token->[4];     
  970: 	    } 
  971: 	   return $currentstring;
  972: 	}
  973:         sub end_font {
  974: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  975:             my $currentstring = '';
  976:             if ($target eq 'web') {
  977: 	      my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
  978: 	      if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;}
  979:               $currentstring = $token->[2];    
  980:             } 
  981: 	   return $currentstring;
  982: 	} 
  983: #-- <strike> tag
  984:         sub start_strike {
  985: 	    my ($target,$token) = @_;
  986:             my $currentstring = '';
  987:             if ($target eq 'web') {
  988: 	       $currentstring .= $token->[4];
  989: 	    } elsif ($target eq 'tex') {
  990: 	       &Apache::lonxml::startredirection();
  991: 	    } 
  992:            return $currentstring;
  993: 	}
  994:         sub end_strike {
  995: 	    my ($target,$token) = @_;
  996:             my $currentstring = '';
  997:             if ($target eq 'web') {
  998: 	       $currentstring .= $token->[2];
  999: 	    } elsif ($target eq 'tex') {
 1000: 	       $currentstring=&Apache::lonxml::endredirection();
 1001: 	       $currentstring=~s/(\S)(\s+)(\S)/$1}$2\\underline{$3/g;
 1002: 	       $currentstring=~s/^\s*(\S)/\\underline{$1/;
 1003: 	       $currentstring=~s/(\S)\s*$/$1}/;	 	       
 1004:             }
 1005:            return $currentstring;
 1006: 	}
 1007: #-- <s> tag
 1008:         sub start_s {
 1009: 	    my ($target,$token) = @_;
 1010:             my $currentstring = '';
 1011:             if ($target eq 'web') {
 1012: 	       $currentstring .= $token->[4];
 1013: 	    } elsif ($target eq 'tex') {
 1014: 	       &Apache::lonxml::startredirection();
 1015: 	    } 
 1016:            return $currentstring;
 1017: 	}
 1018:         sub end_s {
 1019: 	    my ($target,$token) = @_;
 1020:             my $currentstring = '';
 1021:             if ($target eq 'web') {
 1022: 	       $currentstring .= $token->[2];
 1023: 	    } elsif ($target eq 'tex') {
 1024: 	       $currentstring=&Apache::lonxml::endredirection();
 1025: 	       $currentstring=~s/(\S)(\s+)(\S)/$1}$2\\underline{$3/g;
 1026: 	       $currentstring=~s/^\s*(\S)/\\underline{$1/;
 1027: 	       $currentstring=~s/(\S)\s*$/$1}/;	
 1028:             }
 1029:            return $currentstring;
 1030: 	}
 1031: #-- <sub> tag
 1032:         sub start_sub {
 1033: 	    my ($target,$token) = @_;
 1034:             my $currentstring = '';
 1035:             if ($target eq 'web') {
 1036: 	       $currentstring .= $token->[4];
 1037: 	    } elsif ($target eq 'tex') {
 1038: 		$currentstring .= "\$_{ ";
 1039: 	    } 
 1040:            return $currentstring;
 1041: 	}
 1042:         sub end_sub {
 1043: 	    my ($target,$token) = @_;
 1044:             my $currentstring = '';
 1045:             if ($target eq 'web') {
 1046: 	       $currentstring .= $token->[2];
 1047: 	    } elsif ($target eq 'tex') {
 1048: 	        $currentstring .= " }\$";
 1049:             }
 1050:            return $currentstring;
 1051: 	}
 1052: #-- <sup> tag
 1053:         sub start_sup {
 1054: 	    my ($target,$token) = @_;
 1055:             my $currentstring = '';
 1056:             if ($target eq 'web') {
 1057: 	       $currentstring .= $token->[4];
 1058: 	    } elsif ($target eq 'tex') {
 1059: 		$currentstring .= "\$^{ ";
 1060: 	    } 
 1061:            return $currentstring;
 1062: 	}
 1063:         sub end_sup {
 1064: 	    my ($target,$token) = @_;
 1065:             my $currentstring = '';
 1066:             if ($target eq 'web') {
 1067: 	       $currentstring .= $token->[2];
 1068: 	    } elsif ($target eq 'tex') {
 1069: 	        $currentstring .= " }\$";
 1070:             }
 1071:            return $currentstring;
 1072: 	}
 1073: #-- <hr> tag
 1074:         sub start_hr {
 1075: 	    my ($target,$token) = @_;
 1076:             my $currentstring = '';
 1077:             if ($target eq 'web') {
 1078: 	       $currentstring .= $token->[4];
 1079: 	    } elsif ($target eq 'tex') {
 1080: 		$currentstring .= '\vskip 0 mm \noindent\makebox[\textwidth/2 ][b]{\hrulefill}\vskip 0 mm ';
 1081: 	    } 
 1082:            return $currentstring;
 1083: 	}
 1084:         sub end_hr {
 1085: 	    my ($target,$token) = @_;
 1086:             my $currentstring = '';
 1087:             if ($target eq 'web') {
 1088: 	       $currentstring .= $token->[2];
 1089: 	    } elsif ($target eq 'tex') {
 1090: 	    } 
 1091:            return $currentstring;
 1092: 	}
 1093: #-- <div> tag
 1094:         sub start_div {
 1095: 	    my ($target,$token) = @_;
 1096:             my $currentstring = '';
 1097:             if ($target eq 'web') {
 1098: 	       $currentstring .= $token->[4];
 1099: 	    } 
 1100:            return $currentstring;
 1101: 	}
 1102:         sub end_div {
 1103: 	    my ($target,$token) = @_;
 1104:             my $currentstring = '';
 1105:             if ($target eq 'web') {
 1106: 	       $currentstring .= $token->[2];
 1107: 	    } 
 1108:            return $currentstring;
 1109: 	}
 1110: #-- <a> tag
 1111:         sub start_a {
 1112: 	    my ($target,$token) = @_;
 1113:             my $currentstring = '';
 1114:             if ($target eq 'web') {
 1115: 	       $currentstring .= $token->[4];
 1116: 	    } elsif ($target eq 'tex') {
 1117: 	    }
 1118:            return $currentstring;
 1119: 	}
 1120:         sub end_a {
 1121: 	    my ($target,$token,$tagstack,$stackref) = @_;
 1122:             my $currentstring = '';
 1123:             if ($target eq 'web') {
 1124: 	       $currentstring .= $token->[2];
 1125: 	    } elsif ($target eq 'tex') {
 1126:                 my  $tempor_var = $stackref->[$#$stackref];
 1127: 		if (index($tempor_var,'name') != -1 ) {
 1128: 		    $tempor_var =~ s/name=([^,]*),/$1/g;
 1129: 	        } elsif (index($tempor_var,'href') != -1 ) {
 1130: 		    $tempor_var =~ s/href=([^,]*),/$1/g;
 1131: 	        $currentstring .= " \\ref{$tempor_var}";
 1132: 	        }
 1133:             }
 1134:            return $currentstring;
 1135: 	}
 1136: #-- <li> tag
 1137:         sub start_li {
 1138: 	    my ($target,$token,$tagstack,$stackref) = @_;
 1139:             my $currentstring = '';
 1140:             if ($target eq 'web') {
 1141:               $currentstring = $token->[4];     
 1142: 	    } elsif ($target eq 'tex') {
 1143:                 my  $tempor_var = $stackref->[$#$stackref];
 1144:                 if (index($tempor_var,'circle') != -1 ) {
 1145: 	          $currentstring .= " \\item[o] ";
 1146: 	        } elsif (index($tempor_var,'square') != -1 ) {
 1147: 	               $currentstring .= " \\item[$\Box$] ";
 1148: 	        } elsif ($tempor_var ne '') { 
 1149: 		       $_ = $tempor_var;
 1150:                        m/my\s*([^=]*)=/;
 1151: 		       $currentstring .= " \\item[$1] ";
 1152: 		} else {
 1153: 		    $currentstring .= " \\item ";
 1154: 	        }  
 1155: 	    } 
 1156: 	   return $currentstring;
 1157: 	}
 1158:         sub end_li {
 1159: 	    my ($target,$token) = @_;
 1160:             my $currentstring = '';
 1161:             if ($target eq 'web') {
 1162:               $currentstring = $token->[2];     
 1163: 	    } 
 1164: 	   return $currentstring;
 1165: 	}
 1166: #-- <u> tag
 1167:         sub start_u {
 1168: 	    my ($target,$token) = @_;
 1169:             my $currentstring = '';
 1170:             if ($target eq 'web') {
 1171: 	       $currentstring .= $token->[4];
 1172: 	    } elsif ($target eq 'tex') {
 1173: 	       &Apache::lonxml::startredirection();
 1174: 	    } 
 1175:            return $currentstring;
 1176: 	}
 1177:         sub end_u {
 1178: 	    my ($target,$token) = @_;
 1179:             my $currentstring = '';
 1180:             if ($target eq 'web') {
 1181: 	       $currentstring .= $token->[2];
 1182: 	    } elsif ($target eq 'tex') {
 1183: 	       $currentstring=&Apache::lonxml::endredirection();
 1184: 	       $currentstring=~s/(\S)(\s+)(\S)/$1}$2\\underline{$3/g;
 1185: 	       $currentstring=~s/^\s*(\S)/\\underline{$1/;
 1186: 	       $currentstring=~s/(\S)\s*$/$1}/;		
 1187:             }
 1188:            return $currentstring;
 1189: 	}
 1190: #-- <ul> tag
 1191:         sub start_ul {
 1192: 	    my ($target,$token) = @_;
 1193:             my $currentstring = '';
 1194:             if ($target eq 'web') {
 1195:               $currentstring = $token->[4];     
 1196: 	    } elsif ($target eq 'tex') {
 1197:               $currentstring = '\begin{itemize}';  
 1198: 	    } 
 1199: 	   return $currentstring;
 1200: 	}
 1201:         sub end_ul {
 1202: 	    my ($target,$token) = @_;
 1203:             my $currentstring = '';
 1204:             if ($target eq 'web') {
 1205:               $currentstring = $token->[2];     
 1206: 	    } elsif ($target eq 'tex') {
 1207:               $currentstring = '\end{itemize}';  
 1208: 	    } 
 1209: 	   return $currentstring;
 1210: 	}
 1211: #-- <menu> tag
 1212:         sub start_menu {
 1213: 	    my ($target,$token) = @_;
 1214:             my $currentstring = '';
 1215:             if ($target eq 'web') {
 1216:               $currentstring = $token->[4];     
 1217: 	    } elsif ($target eq 'tex') {
 1218:               $currentstring = " \\begin{itemize} ";  
 1219: 	    } 
 1220: 	   return $currentstring;
 1221: 	}
 1222:         sub end_menu {
 1223: 	    my ($target,$token) = @_;
 1224:             my $currentstring = '';
 1225:             if ($target eq 'web') {
 1226:               $currentstring = $token->[2];     
 1227: 	    } elsif ($target eq 'tex') {
 1228:               $currentstring = " \\end{itemize}";  
 1229: 	    } 
 1230: 	   return $currentstring;
 1231: 	}
 1232: #-- <dir> tag
 1233:         sub start_dir {
 1234: 	    my ($target,$token) = @_;
 1235:             my $currentstring = '';
 1236:             if ($target eq 'web') {
 1237:               $currentstring = $token->[4];     
 1238: 	    } elsif ($target eq 'tex') {
 1239:               $currentstring = " \\begin{itemize} ";  
 1240: 	    } 
 1241: 	   return $currentstring;
 1242: 	}
 1243:         sub end_dir {
 1244: 	    my ($target,$token) = @_;
 1245:             my $currentstring = '';
 1246:             if ($target eq 'web') {
 1247:               $currentstring = $token->[2];     
 1248: 	    } elsif ($target eq 'tex') {
 1249:               $currentstring = " \\end{itemize}";  
 1250: 	    } 
 1251: 	   return $currentstring;
 1252: 	}
 1253: #-- <ol> tag
 1254:         sub start_ol {
 1255: 	    my ($target,$token) = @_;
 1256:             my $currentstring = '';
 1257:             if ($target eq 'web') {
 1258:               $currentstring = $token->[4];     
 1259: 	    } elsif ($target eq 'tex') {
 1260:               $currentstring = '\begin{enumerate}';  
 1261: 	    } 
 1262: 	   return $currentstring;
 1263: 	}
 1264:         sub end_ol {
 1265: 	    my ($target,$token) = @_;
 1266:             my $currentstring = '';
 1267:             if ($target eq 'web') {
 1268:               $currentstring = $token->[2];     
 1269: 	    } elsif ($target eq 'tex') {
 1270:               $currentstring = '\end{enumerate}';  
 1271: 	    } 
 1272: 	   return $currentstring;
 1273: 	}
 1274: #-- <dl> tag
 1275:         sub start_dl {
 1276: 	    my ($target,$token) = @_;
 1277:             my $currentstring = '';
 1278:             if ($target eq 'web') {
 1279:               $currentstring = $token->[4];     
 1280: 	    } elsif ($target eq 'tex') {
 1281:               $currentstring = '\begin{description}';  
 1282: 	    } 
 1283: 	   return $currentstring;
 1284: 	}
 1285:         sub end_dl {
 1286: 	    my ($target,$token) = @_;
 1287:             my $currentstring = '';
 1288:             if ($target eq 'web') {
 1289:               $currentstring = $token->[2];     
 1290: 	    } elsif ($target eq 'tex') {
 1291:               $currentstring = '\end{description}';  
 1292: 	    } 
 1293: 	   return $currentstring;
 1294: 	}
 1295: #-- <dt> tag
 1296:         sub start_dt {
 1297: 	    my ($target,$token) = @_;
 1298:             my $currentstring = '';
 1299:             if ($target eq 'web') {
 1300:               $currentstring = $token->[4];     
 1301: 	    } elsif ($target eq 'tex') {
 1302:               $currentstring = '\item[';  
 1303: 	    } 
 1304: 	   return $currentstring;
 1305: 	}
 1306:         sub end_dt {
 1307: 	    my ($target,$token) = @_;
 1308:             my $currentstring = '';
 1309:             if ($target eq 'web') {
 1310:               $currentstring = $token->[2];    
 1311:             } elsif ($target eq 'tex') {
 1312:               $currentstring = ']';  
 1313: 	    } 
 1314: 	   return $currentstring;
 1315: 	}
 1316: #-- <dd> tag
 1317:         sub start_dd {
 1318: 	    my ($target,$token) = @_;
 1319:             my $currentstring = '';
 1320:             if ($target eq 'web') {
 1321:               $currentstring = $token->[4];     
 1322: 	    } 
 1323: 	   return $currentstring;
 1324: 	}
 1325:         sub end_dd {
 1326: 	    my ($target,$token) = @_;
 1327:             my $currentstring = '';
 1328:             if ($target eq 'web') {
 1329:               $currentstring = $token->[2];    
 1330:             } 
 1331: 	   return $currentstring;
 1332: 	}
 1333: #-- <table> tag
 1334: sub start_table {
 1335:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1336:     my $currentstring = '';
 1337:     if ($target eq 'web') {
 1338: 	$currentstring = $token->[4];     
 1339:     } elsif ($target eq 'tex') {
 1340: 	my $aa = {};
 1341: 	push @Apache::londefdef::table, $aa; 
 1342: 	$Apache::londefdef::table[-1]{'row_number'} = -1;
 1343: 	$Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';
 1344: 	my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval,undef,1); 
 1345: 	unless (defined $border) { $border = 0; }
 1346: 	if ($border) { 
 1347: 	    $Apache::londefdef::table[-1]{'hinc'} = '\hline '; 
 1348: 	    $Apache::londefdef::table[-1]{'vinc'} = '&'; 
 1349: 	    $Apache::londefdef::table[-1]{'vvinc'} = '|';
 1350: 	} else {
 1351: 	    $Apache::londefdef::table[-1]{'hinc'} = ''; 
 1352: 	    $Apache::londefdef::table[-1]{'vinc'} = '&'; 
 1353: 	    $Apache::londefdef::table[-1]{'vvinc'} = '';
 1354: 	}
 1355: 	my $width;
 1356: 	foreach my $key (keys(%{$token->[2]})) {
 1357: 	    if ($key =~ /^width$/i) {
 1358: 		$width = &Apache::lonxml::get_param($key,$parstack,$safeeval,undef,1);
 1359: 	    }
 1360: 	}
 1361: 	if (defined($width)) { $Apache::londefdef::table[-1]{'width'}=$width; }
 1362:     }
 1363:     return $currentstring;
 1364: }
 1365:         sub end_table {
 1366: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1367:             my $currentstring = '';
 1368:             if ($target eq 'web') {
 1369:               $currentstring = $token->[2];     
 1370: 	    } elsif ($target eq 'tex') {
 1371: 		my $inmemory = '';
 1372: 		my $output = '';
 1373:                 #construct header of the table
 1374: 		my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
 1375: 		my $in;
 1376: 		for ($in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {
 1377: 		    $header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};
 1378: 		}
 1379: 		$header_of_table .= '}';
 1380:                 #fill the table
 1381: 		for ($in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
 1382: 		    $output .=  $Apache::londefdef::table[-1]{'rowdata'}[$in];
 1383: 		    chop $output;
 1384: 		    $output .= ' \\\\ ';
 1385: 		}
 1386:                 #define the length of the table cells
 1387: 		my @lengthforoutput = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);
 1388: 		my $how_many_columns = $#lengthforoutput + 1; #total number of columns in the table 
 1389: 		my $filled_columns = 0; #number of columns with information about width
 1390: 		my $available_space = ' ';
 1391: 		foreach my $tempo_length (@{ $Apache::londefdef::table[-1]{'lengthrow'} }) {
 1392: 		    my @length = split(/,/,$tempo_length);
 1393: 		    for (my $ico=0;$ico<=$#lengthforoutput;$ico++) {
 1394: 			$lengthforoutput[$ico] =~ m/(\d*\.?\d*)\s*(\w+)/;
 1395: 			my $old_value = $1;
 1396: 			my $old_unit = $2; 
 1397: 			if ($old_unit eq 'cm') { 
 1398: 			    $old_value = $old_value * 10;
 1399: 			} elsif ($old_unit eq 'in') { 
 1400: 			    $old_value = $old_value * 25.4;
 1401: 			} elsif ($old_unit eq 'pt') {
 1402: 			    $old_value = $old_value * 25.4/72.27;
 1403: 			} elsif ($old_unit eq 'pc') {
 1404: 			    $old_value = $old_value * 25.4/6.022;
 1405: 			}
 1406: 			$old_unit = 'mm';
 1407:  			$length[$ico] =~ m/(\d*\.?\d*)\s*(\w+)/;
 1408: 			my $new_value = $1;
 1409: 			my $new_unit = $2;
 1410: 			if ($new_unit eq 'cm') { 
 1411: 			    $new_value = $new_value * 10;
 1412: 			} elsif ($old_unit eq 'in') { 
 1413: 			    $new_value = $new_value * 25.4;
 1414: 			} elsif ($old_unit eq 'pt') {
 1415: 			    $new_value = $new_value * 25.4/72.27;
 1416: 			} elsif ($old_unit eq 'pc') {
 1417: 			    $new_value = $new_value * 25.4/6.022;
 1418: 			}
 1419: 			$new_unit = 'mm';
 1420: 			if ($old_value < $new_value) {
 1421: 			    $lengthforoutput[$ico] = $new_value.' mm';
 1422: 			} else {
 1423: 			    $lengthforoutput[$ico] = $old_value.' mm';
 1424: 			}		 
 1425: 		    }
 1426: 		}
 1427: 		for (my $ico=0;$ico<=$#lengthforoutput;$ico++) {
 1428: 		    if (not $lengthforoutput[$ico]=~m/^\s*0\s*\w*\s*$/) {
 1429: 			$filled_columns++;
 1430: 			$available_space = $available_space.' - '.$lengthforoutput[$ico];
 1431: 		    }
 1432: 		}
 1433: 		my $temp_file;
 1434: 		my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.tbl";
 1435: 		if (-e $filename) {
 1436: 		    $temp_file = Apache::File->new($filename); 
 1437: 		    my @tbl_file_content = <$temp_file>;
 1438: 		    my ($one,$two,$three) = split(/,/,$tbl_file_content[0]);
 1439: 		        $how_many_columns+=$one-1;
 1440: 		        $filled_columns+=$two;
 1441: 		    if($three=~/\S/) {$available_space = $available_space.' - '.$three;}
 1442: 		} else {
 1443: 		    $temp_file = Apache::File->new('>>'.$filename); 
 1444: 		}		
 1445: 		print $temp_file "$how_many_columns,$filled_columns,$available_space\n";
 1446: 		$output =~ s/\\parbox{TOBECHANGEDONNUMBER}{}/\\parbox{1 mm}{}/g;
 1447: 		$output =~ s/\\parbox{TOBECHANGEDONNUMBER}/\\parbox{\$SpacePerColumn}/g;
 1448: 		my @tagar = @$tagstack;
 1449: 		my $signature = 1;
 1450: 		for (my $ico=0;$ico<$#tagar;$ico++) {
 1451: 		     if ($tagar[$ico] eq 'table') { $signature = 0; }
 1452: 		}
 1453: 		if ($signature) {
 1454: 		    my $NumberEmptyLength = $how_many_columns - $filled_columns;		
 1455: 		    my $SpacePerColumn = '(\textwidth '.$available_space.')/'.$NumberEmptyLength;
 1456: 		    my $shorthand = ($filled_columns+1)*4;
 1457: 		    $output =~ s/\$SpacePerColumn/$SpacePerColumn - $shorthand mm/g;
 1458: 		}	
 1459: 		$Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm ';
 1460: 		if ($#Apache::londefdef::table > 0) {
 1461: 		    $inmemory = $Apache::londefdef::table[-1]{'output'};
 1462: 		    pop @Apache::londefdef::table;
 1463: 		    $Apache::londefdef::table[-1]{'rowdata'}[$Apache::londefdef::table[-1]{'row_number'}] .= $inmemory
 1464: 		} else {
 1465: 		    $currentstring = $Apache::londefdef::table[-1]{'output'};
 1466: 		    $currentstring =~ s/\\\\\s+\\\\/\\\\/g; 
 1467: 		    pop @Apache::londefdef::table;
 1468: 		    if (-e $filename) {
 1469: 			unlink $filename;
 1470: 		    }
 1471: 		}
 1472: 	    }
 1473: 	   return $currentstring;
 1474: 	}
 1475: #-- <tr> tag
 1476:         sub start_tr {
 1477: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1478:             my $currentstring = '';
 1479:             if ($target eq 'web') {
 1480:               $currentstring = $token->[4];     
 1481: 	    } elsif ($target eq 'tex') {
 1482: 		$Apache::londefdef::table[-1]{'row_number'}++;
 1483: 		my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
 1484: 		if ($alignchar ne '') {
 1485: 		    push @ {$Apache::londefdef::table[-1]{'rows'} }, $alignchar;
 1486: 		} else {
 1487: 		    push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
 1488: 		}
 1489: 		push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
 1490: 		$Apache::londefdef::table[-1]{'counter_columns'} = -1;
 1491: 		$Apache::londefdef::table[-1]{'length'} = ''; 
 1492: 	    } 
 1493: 	   return $currentstring;
 1494: 	}        
 1495:         sub end_tr {
 1496: 	    my ($target,$token) = @_;
 1497:             my $currentstring = '';
 1498:             if ($target eq 'web') {
 1499: 		$currentstring = $token->[2];     
 1500: 	    } elsif ($target eq 'tex') {
 1501: 		push @{ $Apache::londefdef::table[-1]{'lengthrow'} },$Apache::londefdef::table[-1]{'length'};
 1502: 
 1503: 	    }
 1504: 	   return $currentstring;
 1505: 	}
 1506: #-- <td> tag
 1507:         sub start_td {
 1508: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1509:             my $currentstring = '';
 1510:             if ($target eq 'web') {
 1511:               $currentstring = $token->[4];     
 1512:     } elsif ($target eq 'tex') {
 1513: 		my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
 1514: 		if ($what_to_push eq '') {
 1515: 		    $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
 1516: 		}
 1517: 		    push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
 1518: 		$Apache::londefdef::table[-1]{'counter_columns'}++;
 1519: 		&Apache::lonxml::startredirection();
 1520: ;
 1521: 	    } 
 1522: 	   return $currentstring;
 1523: 	}        
 1524:         sub end_td {
 1525: 	    my ($target,$token) = @_;
 1526:             my $currentstring = '';
 1527:             my $tempolen = '';
 1528:             if ($target eq 'web') {
 1529: 		$currentstring = $token->[2];     
 1530: 	    } elsif ($target eq 'tex') {
 1531: 		my $current_row = $Apache::londefdef::table[-1]{'row_number'};
 1532: 		my $data=&Apache::lonxml::endredirection();
 1533: 		if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt))/) {                 
 1534:                     $Apache::londefdef::table[-1]{'length'} .= $1.',';
 1535: 		    $tempolen = $1;         
 1536: 		} else {
 1537: 		    if (length($data)<5) {
 1538: 			$Apache::londefdef::table[-1]{'length'} .= '0 mm,';
 1539: 			$tempolen = '6 mm';
 1540: 		    } else {
 1541: 			$Apache::londefdef::table[-1]{'length'} .= '0 mm,';
 1542: 			$tempolen = 'TOBECHANGEDONNUMBER';
 1543: 		    }
 1544:                 }                                        
 1545: 		@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{'.$tempolen.'}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
 1546: 	    }
 1547: 	   return $currentstring;
 1548: 	}
 1549: #-- <th> tag
 1550:         sub start_th {
 1551: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1552:             my $currentstring = '';
 1553:             if ($target eq 'web') {
 1554:               $currentstring = $token->[4];     
 1555: 	    } elsif ($target eq 'tex') {
 1556: 		my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
 1557: 		if ($what_to_push eq '') {
 1558: 		    $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
 1559: 		}
 1560: 		    push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
 1561: 		$Apache::londefdef::table[-1]{'counter_columns'}++;
 1562: 		&Apache::lonxml::startredirection();
 1563: ;
 1564: 	    } 
 1565: 	   return $currentstring;
 1566: 	}        
 1567:         sub end_th {
 1568: 	    my ($target,$token) = @_;
 1569:             my $currentstring = '';
 1570:             if ($target eq 'web') {
 1571: 		$currentstring = $token->[2];     
 1572: 	    } elsif ($target eq 'tex') {
 1573: 		my $current_row = $Apache::londefdef::table[-1]{'row_number'};
 1574: 		my $data=&Apache::lonxml::endredirection();
 1575: 		if ($data=~m/width\s*=\s*(\d+\.*\d*\s*(mm|cm))/) {                 
 1576:                     $Apache::londefdef::table[-1]{'length'} .= $1.',';             
 1577: 		} else {
 1578: 		    $Apache::londefdef::table[-1]{'length'} .= '0 mm,'; 
 1579:                 }                                                           
 1580: 		@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{'.$1.'}{\textbf{'.$data.'}} '.$Apache::londefdef::table[-1]{'vinc'};
 1581: 	    }
 1582: 	   return $currentstring;
 1583: 	}
 1584: #-- <img> tag
 1585:         sub start_img {
 1586: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1587: 	    my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
 1588: 						 undef,1);
 1589:             $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
 1590:             my $currentstring = '';
 1591: 	    my $width_param = '';
 1592: 	    my $height_param = '';
 1593: 	    my $scaling = .3;
 1594: 
 1595: 	    if ($target eq 'web') {
 1596:               $currentstring = $token->[4];
 1597: 	    } elsif ($target eq 'tex') {
 1598: 	      &image_replication($src);
 1599: 	      $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
 1600:               #if original gif/jpg/png file exist do following:
 1601:               if (-e $src) {          
 1602:                   #defines the default size of image
 1603: 		  my $image = Image::Magick->new;
 1604: 		  my $current_figure = $image->Read($src);
 1605: 		  $width_param = $image->Get('width') * $scaling;;
 1606: 		  $height_param = $image->Get('height') * $scaling;;
 1607: 		  undef $image;
 1608: 		  #do we have any specified size of the picture?
 1609: 		  my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
 1610: 		  my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
 1611: 		  my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
 1612:                                                          undef,1);
 1613: 		  if ($TeXwidth ne '') {  
 1614: 		      if ($TeXwidth=~/(\d+)\s*\%/) {
 1615: 			  $width_param = $1*$ENV{'form.textwidth'}/100;
 1616: 		      } else { 
 1617: 			  $width_param = $TeXwidth;
 1618: 		      }
 1619: 		  } elsif ($TeXheight ne '') {
 1620: 			  $width_param = $TeXheight/$height_param*$width_param;
 1621: 		  } elsif ($width ne '') {
 1622: 		      $width_param = $width*$scaling;      
 1623: 		  }
 1624: 		  my $file;
 1625: 		  my $path;	
 1626: 		  if ($src =~ m!(.*)/([^/]*)$!) {
 1627: 		      $file = $2; 
 1628: 		      $path = $1.'/'; 
 1629: 		  } 
 1630: 		  my $newsrc = $src;
 1631: 		  $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
 1632: 		  $file=~s/\.(gif|jpg|png)$/.eps/i;
 1633: 		  #where can we find the picture?
 1634: 		  if (-e $newsrc) {
 1635:                       #eps counterpart for image exist 
 1636: 		      if ($path) {
 1637: 			  $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
 1638: 		      }
 1639: 		  } else {
 1640:                       #there is no eps counterpart for image - check for ps one
 1641: 		      $newsrc =~ s/\.eps$/\.ps/;
 1642: 		      if (-e $newsrc) {
 1643: 			  #ps counterpart for image exist 
 1644: 			  $file =~ s/\.eps$/\.ps/;
 1645: 			  if ($path) {
 1646: 			      $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
 1647: 			  }
 1648: 		      } else {
 1649: 			  #there aren't eps or ps - so create eps 
 1650: 			  my $temp_file;
 1651: 			  my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
 1652: 			  $temp_file = Apache::File->new('>>'.$filename); 
 1653: 			  print $temp_file "$src\n";
 1654: 			  $currentstring .= '\vskip 1 mm \graphicspath{{/home/httpd/prtspool/}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
 1655: 		      }
 1656: 		  }
 1657: 	      } else {
 1658: 		  #original image file doesn't exist so check the alt attribute
 1659: 		  my $alt = &Apache::lonxml::get_param('alt',$parstack,$safeeval,undef,1);
 1660:                   if ($alt) {
 1661: 		      $currentstring .= ' '.$alt.' ';
 1662: 		  } else {
 1663:                      #<allow> tag will care about replication 
 1664: 		  }
 1665: 	      }
 1666: 	    }
 1667: 	    return $currentstring;
 1668: 	}
 1669:         sub end_img {
 1670: 	    my ($target,$token) = @_;
 1671:             my $currentstring = '';
 1672:             if ($target eq 'web') {
 1673:               $currentstring = $token->[2];
 1674: 	    } elsif ($target eq 'tex') {
 1675:               $currentstring = '';
 1676: 	    }
 1677: 	   return $currentstring;
 1678: 	}
 1679: #-- <applet> tag
 1680: 
 1681:         sub start_applet {
 1682: 	    my ($target,$token) = @_;
 1683:               $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=   
 1684:                                         $token->[2]->{'code'};
 1685:               $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
 1686:                                         $token->[2]->{'archive'};
 1687:             my $currentstring = '';
 1688:             if ($target eq 'web') {
 1689:               $currentstring = $token->[4];
 1690: 	    } elsif ($target eq 'tex') {
 1691:               $currentstring = " \\begin{figure} ";
 1692: 	    } 
 1693: 	   return $currentstring;
 1694: 	}
 1695: sub end_applet {
 1696:     my ($target,$token) = @_;
 1697:     my $currentstring = '';
 1698:     if ($target eq 'web') {
 1699: 	$currentstring = $token->[2];
 1700:     } elsif ($target eq 'tex') {
 1701: 	$currentstring = " \\end{figure}";
 1702:     } 
 1703:     return $currentstring;
 1704: }
 1705: 
 1706: #-- <embed> tag
 1707: 
 1708: sub start_embed {    
 1709:     my ($target,$token) = @_;
 1710:     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
 1711: 	$token->[2]->{'src'};
 1712:     my $currentstring = '';
 1713:     if ($target eq 'web') {
 1714: 	$currentstring = $token->[4];
 1715:     } elsif ($target eq 'tex') {
 1716: 	$currentstring = " \\begin{figure} ";  
 1717:     } 
 1718:     return $currentstring;
 1719: }
 1720:         sub end_embed {
 1721: 	    my ($target,$token) = @_;
 1722:             my $currentstring = '';
 1723:             if ($target eq 'web') {
 1724:               $currentstring = $token->[2];     
 1725: 	    } elsif ($target eq 'tex') {
 1726:               $currentstring = " \\end{figure}";  
 1727: 	    } 
 1728: 	   return $currentstring;
 1729: 	}
 1730: 
 1731: #-- <param> tag
 1732: 
 1733:         sub start_param {
 1734: 	    my ($target,$token) = @_;
 1735: 	    if ($token->[2]->{'name'} eq 'cabbase') {
 1736:                       $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
 1737: 					     $token->[2]->{'value'};
 1738:             }   
 1739:             $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=   
 1740:                                         $token->[2]->{'src'};
 1741:             my $currentstring = '';
 1742:             if ($target eq 'web') {
 1743:               $currentstring = $token->[4];     
 1744: 	    } elsif ($target eq 'tex') {
 1745:               $currentstring = " \\begin{figure} ";  
 1746: 	    } 
 1747: 	   return $currentstring;
 1748: 	}
 1749:         sub end_param {
 1750: 	    my ($target,$token) = @_;
 1751:             my $currentstring = '';
 1752:             if ($target eq 'web') {
 1753:               $currentstring = $token->[2];     
 1754: 	    } elsif ($target eq 'tex') {
 1755:               $currentstring = " \\end{figure}";  
 1756: 	    } 
 1757: 	   return $currentstring;
 1758: 	}
 1759: #-- <allow> tag
 1760: sub start_allow {
 1761:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1762:     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
 1763: 	$token->[2]->{'src'};
 1764:     my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
 1765:     &image_replication($src);
 1766:     my $result;
 1767:     if ($target eq 'edit') {
 1768: 	$result .=&Apache::edit::tag_start($target,$token);
 1769: 	$result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
 1770: 	$result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
 1771:     } elsif ($target eq 'modified') {
 1772: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
 1773: 						     $safeeval,'src');
 1774: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
 1775:     }
 1776:     return $result;
 1777: }
 1778: 
 1779: sub end_allow {
 1780:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1781:     if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
 1782:     return '';
 1783: }
 1784: #-- Frames
 1785: 	sub start_frameset {
 1786: 	  my ($target,$token) = @_;
 1787: 	  my $currentstring = '';
 1788: 	  if ($target eq 'web') { 
 1789: 	    if (!$Apache::lonxml::registered) {
 1790: 	      $currentstring.='<head>'.
 1791: 		  &Apache::lonxml::registerurl(undef,$target).'</head>';
 1792: 	    }
 1793: 	    $currentstring .= $token->[4];
 1794: 	  }
 1795: 	  return $currentstring;
 1796: 	}
 1797:         sub end_frameset {
 1798: 	  my ($target,$token) = @_;
 1799: 	  my $currentstring = '';
 1800: 	  if ($target eq 'web') {
 1801: 	    $currentstring = $token->[2];
 1802: 	  }
 1803: 	  return $currentstring;
 1804: 	}
 1805: #-- <pre>
 1806: 	sub start_pre {
 1807: 	    my ($target,$token) = @_;
 1808:             my $currentstring = '';
 1809:             if ($target eq 'web') {
 1810: 	       $currentstring .= $token->[4];
 1811: 	    } elsif ($target eq 'tex') {
 1812: 		$currentstring .= '\begin{verbatim}';
 1813: 	    } 
 1814:            return $currentstring;
 1815: 	}
 1816:         sub end_pre {
 1817: 	    my ($target,$token) = @_;
 1818:             my $currentstring = '';
 1819:             if ($target eq 'web') {
 1820: 	       $currentstring .= $token->[2];
 1821: 	    } elsif ($target eq 'tex') {
 1822: 		$currentstring .= '\end{verbatim}';
 1823: 	    }
 1824:            return $currentstring;
 1825: 	}
 1826: #-- <insert>
 1827: 	sub start_insert {
 1828: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1829:             my $currentstring = '';
 1830:             if ($target eq 'web') {
 1831: 		my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
 1832: 	       $currentstring .= '<b>'.$display.'</b>';;
 1833: 	    }
 1834:            return $currentstring;
 1835: 	}
 1836:         sub end_insert {
 1837: 	    my ($target,$token) = @_;
 1838:             my $currentstring = '';
 1839:             if ($target eq 'web') {
 1840: 	       $currentstring .= '';
 1841: 	    }
 1842:            return $currentstring;
 1843: 	}
 1844: #-- <externallink>
 1845: 	sub start_externallink {
 1846: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1847:             my $currentstring = '';
 1848:             if ($target eq 'web') {
 1849: 		my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval,undef,1);
 1850: 	       $currentstring .= '<b>'.$display.'</b>';;
 1851: 	    }
 1852:            return $currentstring;
 1853: 	}
 1854:         sub end_externallink {
 1855: 	    my ($target,$token) = @_;
 1856:             my $currentstring = '';
 1857:             if ($target eq 'web') {
 1858: 	       $currentstring .= '';
 1859: 	    }
 1860:            return $currentstring;
 1861: 	}
 1862: #-- <blankspace heigth="">
 1863:         sub start_blankspace {
 1864: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1865:             my $currentstring = '';
 1866:             if ($target eq 'tex') {
 1867: 		my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
 1868: 		$currentstring .= '\vskip '.$howmuch.' ';
 1869: 	    }
 1870:            return $currentstring;
 1871: 	}
 1872:         sub end_blankspace {
 1873: 	    my ($target,$token) = @_;
 1874:             my $currentstring = '';
 1875:             if ($target eq 'tex') {
 1876: 	       $currentstring .= '';
 1877: 	    }
 1878:            return $currentstring;
 1879: 	}
 1880: #-- <abbr> tag
 1881:       sub start_abbr {
 1882: 	    my ($target,$token) = @_;
 1883:             my $currentstring = '';
 1884:             if ($target eq 'web') {
 1885:               $currentstring = $token->[4];     
 1886: 	    } 
 1887: 	   return $currentstring;
 1888: 	}
 1889:         sub end_abbr {
 1890: 	    my ($target,$token) = @_;
 1891:             my $currentstring = '';
 1892:             if ($target eq 'web') {
 1893:               $currentstring = $token->[2];    
 1894:             } 
 1895: 	   return $currentstring;
 1896: 	}
 1897: #-- <acronym> tag
 1898:       sub start_acronym {
 1899: 	    my ($target,$token) = @_;
 1900:             my $currentstring = '';
 1901:             if ($target eq 'web') {
 1902:               $currentstring = $token->[4];     
 1903: 	    } 
 1904: 	   return $currentstring;
 1905: 	}
 1906:         sub end_acronym {
 1907: 	    my ($target,$token) = @_;
 1908:             my $currentstring = '';
 1909:             if ($target eq 'web') {
 1910:               $currentstring = $token->[2];    
 1911:             } 
 1912: 	   return $currentstring;
 1913: 	}
 1914: #-- <area> tag
 1915:       sub start_area {
 1916: 	    my ($target,$token) = @_;
 1917:             my $currentstring = '';
 1918:             if ($target eq 'web') {
 1919:               $currentstring = $token->[4];     
 1920: 	    } 
 1921: 	   return $currentstring;
 1922: 	}
 1923:         sub end_area {
 1924: 	    my ($target,$token) = @_;
 1925:             my $currentstring = '';
 1926:             if ($target eq 'web') {
 1927:               $currentstring = $token->[2];    
 1928:             } 
 1929: 	   return $currentstring;
 1930: 	}
 1931: #-- <base> tag
 1932:       sub start_base {
 1933: 	    my ($target,$token) = @_;
 1934:             my $currentstring = '';
 1935:             if ($target eq 'web') {
 1936:               $currentstring = $token->[4];     
 1937: 	    } 
 1938: 	   return $currentstring;
 1939: 	}
 1940:         sub end_base {
 1941: 	    my ($target,$token) = @_;
 1942:             my $currentstring = '';
 1943:             if ($target eq 'web') {
 1944:               $currentstring = $token->[2];    
 1945:             } 
 1946: 	   return $currentstring;
 1947: 	}
 1948: #-- <bdo> tag
 1949:       sub start_bdo {
 1950: 	    my ($target,$token) = @_;
 1951:             my $currentstring = '';
 1952:             if ($target eq 'web') {
 1953:               $currentstring = $token->[4];     
 1954: 	    } 
 1955: 	   return $currentstring;
 1956: 	}
 1957:         sub end_bdo {
 1958: 	    my ($target,$token) = @_;
 1959:             my $currentstring = '';
 1960:             if ($target eq 'web') {
 1961:               $currentstring = $token->[2];    
 1962:             } 
 1963: 	   return $currentstring;
 1964: 	}
 1965: #-- <bgsound> tag
 1966:       sub start_bgsound {
 1967: 	    my ($target,$token) = @_;
 1968:             my $currentstring = '';
 1969:             if ($target eq 'web') {
 1970:               $currentstring = $token->[4];     
 1971: 	    } 
 1972: 	   return $currentstring;
 1973: 	}
 1974:         sub end_bgsound {
 1975: 	    my ($target,$token) = @_;
 1976:             my $currentstring = '';
 1977:             if ($target eq 'web') {
 1978:               $currentstring = $token->[2];    
 1979:             } 
 1980: 	   return $currentstring;
 1981: 	}
 1982: #-- <blink> tag
 1983:       sub start_blink {
 1984: 	    my ($target,$token) = @_;
 1985:             my $currentstring = '';
 1986:             if ($target eq 'web') {
 1987:               $currentstring = $token->[4];     
 1988: 	    } 
 1989: 	   return $currentstring;
 1990: 	}
 1991:         sub end_blink {
 1992: 	    my ($target,$token) = @_;
 1993:             my $currentstring = '';
 1994:             if ($target eq 'web') {
 1995:               $currentstring = $token->[2];    
 1996:             } 
 1997: 	   return $currentstring;
 1998: 	}
 1999: #-- <blockquote> tag
 2000:       sub start_blockquote {
 2001: 	    my ($target,$token) = @_;
 2002:             my $currentstring = '';
 2003:             if ($target eq 'web') {
 2004:               $currentstring = $token->[4];     
 2005: 	    } 
 2006: 	   return $currentstring;
 2007: 	}
 2008:         sub end_blockquote {
 2009: 	    my ($target,$token) = @_;
 2010:             my $currentstring = '';
 2011:             if ($target eq 'web') {
 2012:               $currentstring = $token->[2];    
 2013:             } 
 2014: 	   return $currentstring;
 2015: 	}
 2016: #-- <button> tag
 2017:       sub start_button {
 2018: 	    my ($target,$token) = @_;
 2019:             my $currentstring = '';
 2020:             if ($target eq 'web') {
 2021:               $currentstring = $token->[4];     
 2022: 	    } 
 2023: 	   return $currentstring;
 2024: 	}
 2025:         sub end_button {
 2026: 	    my ($target,$token) = @_;
 2027:             my $currentstring = '';
 2028:             if ($target eq 'web') {
 2029:               $currentstring = $token->[2];    
 2030:             } 
 2031: 	   return $currentstring;
 2032: 	}
 2033: #-- <caption> tag
 2034:       sub start_caption {
 2035: 	    my ($target,$token) = @_;
 2036:             my $currentstring = '';
 2037:             if ($target eq 'web') {
 2038:               $currentstring = $token->[4];     
 2039: 	    } 
 2040: 	   return $currentstring;
 2041: 	}
 2042:         sub end_caption {
 2043: 	    my ($target,$token) = @_;
 2044:             my $currentstring = '';
 2045:             if ($target eq 'web') {
 2046:               $currentstring = $token->[2];    
 2047:             } 
 2048: 	   return $currentstring;
 2049: 	}
 2050: #-- <col> tag
 2051:       sub start_col {
 2052: 	    my ($target,$token) = @_;
 2053:             my $currentstring = '';
 2054:             if ($target eq 'web') {
 2055:               $currentstring = $token->[4];     
 2056: 	    } 
 2057: 	   return $currentstring;
 2058: 	}
 2059:         sub end_col {
 2060: 	    my ($target,$token) = @_;
 2061:             my $currentstring = '';
 2062:             if ($target eq 'web') {
 2063:               $currentstring = $token->[2];    
 2064:             } 
 2065: 	   return $currentstring;
 2066: 	}
 2067: #-- <colgroup> tag
 2068:       sub start_colgroup {
 2069: 	    my ($target,$token) = @_;
 2070:             my $currentstring = '';
 2071:             if ($target eq 'web') {
 2072:               $currentstring = $token->[4];     
 2073: 	    } 
 2074: 	   return $currentstring;
 2075: 	}
 2076:         sub end_colgroup {
 2077: 	    my ($target,$token) = @_;
 2078:             my $currentstring = '';
 2079:             if ($target eq 'web') {
 2080:               $currentstring = $token->[2];    
 2081:             } 
 2082: 	   return $currentstring;
 2083: 	}
 2084: #-- <del> tag
 2085:       sub start_del {
 2086: 	    my ($target,$token) = @_;
 2087:             my $currentstring = '';
 2088:             if ($target eq 'web') {
 2089:               $currentstring = $token->[4];     
 2090: 	    } 
 2091: 	   return $currentstring;
 2092: 	}
 2093:         sub end_del {
 2094: 	    my ($target,$token) = @_;
 2095:             my $currentstring = '';
 2096:             if ($target eq 'web') {
 2097:               $currentstring = $token->[2];    
 2098:             } 
 2099: 	   return $currentstring;
 2100: 	}
 2101: #-- <fieldset> tag
 2102:       sub start_fieldset {
 2103: 	    my ($target,$token) = @_;
 2104:             my $currentstring = '';
 2105:             if ($target eq 'web') {
 2106:               $currentstring = $token->[4];     
 2107: 	    } 
 2108: 	   return $currentstring;
 2109: 	}
 2110:         sub end_fieldset {
 2111: 	    my ($target,$token) = @_;
 2112:             my $currentstring = '';
 2113:             if ($target eq 'web') {
 2114:               $currentstring = $token->[2];    
 2115:             } 
 2116: 	   return $currentstring;
 2117: 	}
 2118: #-- <frame> tag
 2119:       sub start_frame {
 2120: 	    my ($target,$token) = @_;
 2121:             my $currentstring = '';
 2122:             if ($target eq 'web') {
 2123:               $currentstring = $token->[4];     
 2124: 	    } 
 2125: 	   return $currentstring;
 2126: 	}
 2127:         sub end_frame {
 2128: 	    my ($target,$token) = @_;
 2129:             my $currentstring = '';
 2130:             if ($target eq 'web') {
 2131:               $currentstring = $token->[2];    
 2132:             } 
 2133: 	   return $currentstring;
 2134: 	}
 2135: #-- <iframe> tag
 2136:       sub start_iframe {
 2137: 	    my ($target,$token) = @_;
 2138:             my $currentstring = '';
 2139:             if ($target eq 'web') {
 2140:               $currentstring = $token->[4];     
 2141: 	    } 
 2142: 	   return $currentstring;
 2143: 	}
 2144:         sub end_iframe {
 2145: 	    my ($target,$token) = @_;
 2146:             my $currentstring = '';
 2147:             if ($target eq 'web') {
 2148:               $currentstring = $token->[2];    
 2149:             } 
 2150: 	   return $currentstring;
 2151: 	}
 2152: #-- <ins> tag
 2153:       sub start_ins {
 2154: 	    my ($target,$token) = @_;
 2155:             my $currentstring = '';
 2156:             if ($target eq 'web') {
 2157:               $currentstring = $token->[4];     
 2158: 	    } 
 2159: 	   return $currentstring;
 2160: 	}
 2161:         sub end_ins {
 2162: 	    my ($target,$token) = @_;
 2163:             my $currentstring = '';
 2164:             if ($target eq 'web') {
 2165:               $currentstring = $token->[2];    
 2166:             } 
 2167: 	   return $currentstring;
 2168: 	}
 2169: #-- <isindex> tag
 2170:       sub start_isindex {
 2171: 	    my ($target,$token) = @_;
 2172:             my $currentstring = '';
 2173:             if ($target eq 'web') {
 2174:               $currentstring = $token->[4];     
 2175: 	    } 
 2176: 	   return $currentstring;
 2177: 	}
 2178:         sub end_isindex {
 2179: 	    my ($target,$token) = @_;
 2180:             my $currentstring = '';
 2181:             if ($target eq 'web') {
 2182:               $currentstring = $token->[2];    
 2183:             } 
 2184: 	   return $currentstring;
 2185: 	}
 2186: #-- <keygen> tag
 2187:       sub start_keygen {
 2188: 	    my ($target,$token) = @_;
 2189:             my $currentstring = '';
 2190:             if ($target eq 'web') {
 2191:               $currentstring = $token->[4];     
 2192: 	    } 
 2193: 	   return $currentstring;
 2194: 	}
 2195:         sub end_keygen {
 2196: 	    my ($target,$token) = @_;
 2197:             my $currentstring = '';
 2198:             if ($target eq 'web') {
 2199:               $currentstring = $token->[2];    
 2200:             } 
 2201: 	   return $currentstring;
 2202: 	}
 2203: #-- <label> tag
 2204:       sub start_label {
 2205: 	    my ($target,$token) = @_;
 2206:             my $currentstring = '';
 2207:             if ($target eq 'web') {
 2208:               $currentstring = $token->[4];     
 2209: 	    } 
 2210: 	   return $currentstring;
 2211: 	}
 2212:         sub end_label {
 2213: 	    my ($target,$token) = @_;
 2214:             my $currentstring = '';
 2215:             if ($target eq 'web') {
 2216:               $currentstring = $token->[2];    
 2217:             } 
 2218: 	   return $currentstring;
 2219: 	}
 2220: #-- <layer> tag
 2221:       sub start_layer {
 2222: 	    my ($target,$token) = @_;
 2223:             my $currentstring = '';
 2224:             if ($target eq 'web') {
 2225:               $currentstring = $token->[4];     
 2226: 	    } 
 2227: 	   return $currentstring;
 2228: 	}
 2229:         sub end_layer {
 2230: 	    my ($target,$token) = @_;
 2231:             my $currentstring = '';
 2232:             if ($target eq 'web') {
 2233:               $currentstring = $token->[2];    
 2234:             } 
 2235: 	   return $currentstring;
 2236: 	}
 2237: #-- <legend> tag
 2238:       sub start_legend {
 2239: 	    my ($target,$token) = @_;
 2240:             my $currentstring = '';
 2241:             if ($target eq 'web') {
 2242:               $currentstring = $token->[4];     
 2243: 	    } 
 2244: 	   return $currentstring;
 2245: 	}
 2246:         sub end_legend {
 2247: 	    my ($target,$token) = @_;
 2248:             my $currentstring = '';
 2249:             if ($target eq 'web') {
 2250:               $currentstring = $token->[2];    
 2251:             } 
 2252: 	   return $currentstring;
 2253: 	}
 2254: #-- <link> tag
 2255:       sub start_link {
 2256: 	    my ($target,$token) = @_;
 2257:             my $currentstring = '';
 2258:             if ($target eq 'web') {
 2259:               $currentstring = $token->[4];     
 2260: 	    } 
 2261: 	   return $currentstring;
 2262: 	}
 2263:         sub end_link {
 2264: 	    my ($target,$token) = @_;
 2265:             my $currentstring = '';
 2266:             if ($target eq 'web') {
 2267:               $currentstring = $token->[2];    
 2268:             } 
 2269: 	   return $currentstring;
 2270: 	}
 2271: #-- <marquee> tag
 2272:       sub start_marquee {
 2273: 	    my ($target,$token) = @_;
 2274:             my $currentstring = '';
 2275:             if ($target eq 'web') {
 2276:               $currentstring = $token->[4];     
 2277: 	    } 
 2278: 	   return $currentstring;
 2279: 	}
 2280:         sub end_marquee {
 2281: 	    my ($target,$token) = @_;
 2282:             my $currentstring = '';
 2283:             if ($target eq 'web') {
 2284:               $currentstring = $token->[2];    
 2285:             } 
 2286: 	   return $currentstring;
 2287: 	}
 2288: #-- <malticol> tag
 2289:       sub start_malticol {
 2290: 	    my ($target,$token) = @_;
 2291:             my $currentstring = '';
 2292:             if ($target eq 'web') {
 2293:               $currentstring = $token->[4];     
 2294: 	    } 
 2295: 	   return $currentstring;
 2296: 	}
 2297:         sub end_malticol {
 2298: 	    my ($target,$token) = @_;
 2299:             my $currentstring = '';
 2300:             if ($target eq 'web') {
 2301:               $currentstring = $token->[2];    
 2302:             } 
 2303: 	   return $currentstring;
 2304: 	}
 2305: #-- <nobr> tag
 2306:       sub start_nobr {
 2307: 	    my ($target,$token) = @_;
 2308:             my $currentstring = '';
 2309:             if ($target eq 'web') {
 2310:               $currentstring = $token->[4];     
 2311: 	    } 
 2312: 	   return $currentstring;
 2313: 	}
 2314:         sub end_nobr {
 2315: 	    my ($target,$token) = @_;
 2316:             my $currentstring = '';
 2317:             if ($target eq 'web') {
 2318:               $currentstring = $token->[2];    
 2319:             } 
 2320: 	   return $currentstring;
 2321: 	}
 2322: #-- <noembed> tag
 2323:       sub start_noembed {
 2324: 	    my ($target,$token) = @_;
 2325:             my $currentstring = '';
 2326:             if ($target eq 'web') {
 2327:               $currentstring = $token->[4];     
 2328: 	    } 
 2329: 	   return $currentstring;
 2330: 	}
 2331:         sub end_noembed {
 2332: 	    my ($target,$token) = @_;
 2333:             my $currentstring = '';
 2334:             if ($target eq 'web') {
 2335:               $currentstring = $token->[2];    
 2336:             } 
 2337: 	   return $currentstring;
 2338: 	}
 2339: #-- <noframes> tag
 2340:       sub start_noframes {
 2341: 	    my ($target,$token) = @_;
 2342:             my $currentstring = '';
 2343:             if ($target eq 'web') {
 2344:               $currentstring = $token->[4];     
 2345: 	    } 
 2346: 	   return $currentstring;
 2347: 	}
 2348:         sub end_noframes {
 2349: 	    my ($target,$token) = @_;
 2350:             my $currentstring = '';
 2351:             if ($target eq 'web') {
 2352:               $currentstring = $token->[2];    
 2353:             } 
 2354: 	   return $currentstring;
 2355: 	}
 2356: #-- <nolayer> tag
 2357:       sub start_nolayer {
 2358: 	    my ($target,$token) = @_;
 2359:             my $currentstring = '';
 2360:             if ($target eq 'web') {
 2361:               $currentstring = $token->[4];     
 2362: 	    } 
 2363: 	   return $currentstring;
 2364: 	}
 2365:         sub end_nolayer {
 2366: 	    my ($target,$token) = @_;
 2367:             my $currentstring = '';
 2368:             if ($target eq 'web') {
 2369:               $currentstring = $token->[2];    
 2370:             } 
 2371: 	   return $currentstring;
 2372: 	}
 2373: #-- <noscript> tag
 2374:       sub start_noscript {
 2375: 	    my ($target,$token) = @_;
 2376:             my $currentstring = '';
 2377:             if ($target eq 'web') {
 2378:               $currentstring = $token->[4];     
 2379: 	    } 
 2380: 	   return $currentstring;
 2381: 	}
 2382:         sub end_noscript {
 2383: 	    my ($target,$token) = @_;
 2384:             my $currentstring = '';
 2385:             if ($target eq 'web') {
 2386:               $currentstring = $token->[2];    
 2387:             } 
 2388: 	   return $currentstring;
 2389: 	}
 2390: #-- <object> tag
 2391:       sub start_object {
 2392: 	    my ($target,$token) = @_;
 2393:             my $currentstring = '';
 2394:             if ($target eq 'web') {
 2395:               $currentstring = $token->[4];     
 2396: 	    } 
 2397: 	   return $currentstring;
 2398: 	}
 2399:         sub end_object {
 2400: 	    my ($target,$token) = @_;
 2401:             my $currentstring = '';
 2402:             if ($target eq 'web') {
 2403:               $currentstring = $token->[2];    
 2404:             } 
 2405: 	   return $currentstring;
 2406: 	}
 2407: #-- <optgroup> tag
 2408:       sub start_optgroup {
 2409: 	    my ($target,$token) = @_;
 2410:             my $currentstring = '';
 2411:             if ($target eq 'web') {
 2412:               $currentstring = $token->[4];     
 2413: 	    } 
 2414: 	   return $currentstring;
 2415: 	}
 2416:         sub end_optgroup {
 2417: 	    my ($target,$token) = @_;
 2418:             my $currentstring = '';
 2419:             if ($target eq 'web') {
 2420:               $currentstring = $token->[2];    
 2421:             } 
 2422: 	   return $currentstring;
 2423: 	}
 2424: #-- <samp> tag
 2425:       sub start_samp {
 2426: 	    my ($target,$token) = @_;
 2427:             my $currentstring = '';
 2428:             if ($target eq 'web') {
 2429:               $currentstring = $token->[4];     
 2430: 	    } 
 2431: 	   return $currentstring;
 2432: 	}
 2433:         sub end_samp {
 2434: 	    my ($target,$token) = @_;
 2435:             my $currentstring = '';
 2436:             if ($target eq 'web') {
 2437:               $currentstring = $token->[2];    
 2438:             } 
 2439: 	   return $currentstring;
 2440: 	}
 2441: #-- <server> tag
 2442:       sub start_server {
 2443: 	    my ($target,$token) = @_;
 2444:             my $currentstring = '';
 2445:             if ($target eq 'web') {
 2446:               $currentstring = $token->[4];     
 2447: 	    } 
 2448: 	   return $currentstring;
 2449: 	}
 2450:         sub end_server {
 2451: 	    my ($target,$token) = @_;
 2452:             my $currentstring = '';
 2453:             if ($target eq 'web') {
 2454:               $currentstring = $token->[2];    
 2455:             } 
 2456: 	   return $currentstring;
 2457: 	}
 2458: #-- <spacer> tag
 2459:       sub start_spacer {
 2460: 	    my ($target,$token) = @_;
 2461:             my $currentstring = '';
 2462:             if ($target eq 'web') {
 2463:               $currentstring = $token->[4];     
 2464: 	    } 
 2465: 	   return $currentstring;
 2466: 	}
 2467:         sub end_spacer {
 2468: 	    my ($target,$token) = @_;
 2469:             my $currentstring = '';
 2470:             if ($target eq 'web') {
 2471:               $currentstring = $token->[2];    
 2472:             } 
 2473: 	   return $currentstring;
 2474: 	}
 2475: #-- <span> tag
 2476:       sub start_span {
 2477: 	    my ($target,$token) = @_;
 2478:             my $currentstring = '';
 2479:             if ($target eq 'web') {
 2480:               $currentstring = $token->[4];     
 2481: 	    } 
 2482: 	   return $currentstring;
 2483: 	}
 2484:         sub end_span {
 2485: 	    my ($target,$token) = @_;
 2486:             my $currentstring = '';
 2487:             if ($target eq 'web') {
 2488:               $currentstring = $token->[2];    
 2489:             } 
 2490: 	   return $currentstring;
 2491: 	}
 2492: #-- <tbody> tag
 2493:       sub start_tbody {
 2494: 	    my ($target,$token) = @_;
 2495:             my $currentstring = '';
 2496:             if ($target eq 'web') {
 2497:               $currentstring = $token->[4];     
 2498: 	    } 
 2499: 	   return $currentstring;
 2500: 	}
 2501:         sub end_tbody {
 2502: 	    my ($target,$token) = @_;
 2503:             my $currentstring = '';
 2504:             if ($target eq 'web') {
 2505:               $currentstring = $token->[2];    
 2506:             } 
 2507: 	   return $currentstring;
 2508: 	}
 2509: #-- <tfoot> tag
 2510:       sub start_tfoot {
 2511: 	    my ($target,$token) = @_;
 2512:             my $currentstring = '';
 2513:             if ($target eq 'web') {
 2514:               $currentstring = $token->[4];     
 2515: 	    } 
 2516: 	   return $currentstring;
 2517: 	}
 2518:         sub end_tfoot {
 2519: 	    my ($target,$token) = @_;
 2520:             my $currentstring = '';
 2521:             if ($target eq 'web') {
 2522:               $currentstring = $token->[2];    
 2523:             } 
 2524: 	   return $currentstring;
 2525: 	}
 2526: #-- <thead> tag
 2527:       sub start_thead {
 2528: 	    my ($target,$token) = @_;
 2529:             my $currentstring = '';
 2530:             if ($target eq 'web') {
 2531:               $currentstring = $token->[4];     
 2532: 	    } 
 2533: 	   return $currentstring;
 2534: 	}
 2535:         sub end_thead {
 2536: 	    my ($target,$token) = @_;
 2537:             my $currentstring = '';
 2538:             if ($target eq 'web') {
 2539:               $currentstring = $token->[2];    
 2540:             } 
 2541: 	   return $currentstring;
 2542: 	}
 2543: #-- <var> tag
 2544:       sub start_var {
 2545: 	    my ($target,$token) = @_;
 2546:             my $currentstring = '';
 2547:             if ($target eq 'web') {
 2548:               $currentstring = $token->[4];     
 2549: 	    } 
 2550: 	   return $currentstring;
 2551: 	}
 2552:         sub end_var {
 2553: 	    my ($target,$token) = @_;
 2554:             my $currentstring = '';
 2555:             if ($target eq 'web') {
 2556:               $currentstring = $token->[2];    
 2557:             } 
 2558: 	   return $currentstring;
 2559: 	}
 2560: #-- <wbr> tag
 2561:       sub start_wbr {
 2562: 	    my ($target,$token) = @_;
 2563:             my $currentstring = '';
 2564:             if ($target eq 'web') {
 2565:               $currentstring = $token->[4];     
 2566: 	    } 
 2567: 	   return $currentstring;
 2568: 	}
 2569:         sub end_wbr {
 2570: 	    my ($target,$token) = @_;
 2571:             my $currentstring = '';
 2572:             if ($target eq 'web') {
 2573:               $currentstring = $token->[2];    
 2574:             } 
 2575: 	   return $currentstring;
 2576: 	}
 2577: 
 2578: sub image_replication {
 2579:     my $src = shift;
 2580:     if (not -e '/home/httpd/html'.$src) {
 2581: 	#replicates image itself
 2582: 	&Apache::lonnet::repcopy('/home/httpd/html'.$src);
 2583: 	#replicates eps or ps 
 2584: 	my $newsrc = $src;
 2585: 	$newsrc =~ s/\.(gif|jpg|png)$/.eps/;
 2586: 	if (not-e $newsrc && &Apache::lonnet::repcopy('/home/httpd/html'.$newsrc) ne 'OK') {
 2587: 	    $newsrc =~ s/\.ps$/\.eps/;
 2588: 	    &Apache::lonnet::repcopy('/home/httpd/html'.$newsrc);
 2589: 	}
 2590:     }
 2591:     return '';
 2592: }
 2593: 
 2594: 1;
 2595: __END__

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