File:  [LON-CAPA] / loncom / xml / londefdef.pm
Revision 1.99: download - view: text, annotated - select for diffs
Thu Nov 7 19:33:52 2002 UTC (21 years, 6 months ago) by albertel
Branches: MAIN
CVS tags: HEAD
- get_param can now be insensitive to case, it takes an optional 4th
   parameter that controls this
- BUG#932 and BUG#934

    1: # The LearningOnline Network with CAPA
    2: # Tags Default Definition Module 
    3: #
    4: # $Id: londefdef.pm,v 1.99 2002/11/07 19:33:52 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','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: #-- <html> tag    
  112:       sub start_html {
  113: 	    my ($target,$token) = @_;
  114:             my $currentstring = '';
  115: 	    if ($ENV{'browser.mathml'}) {
  116: 	      &tth::ttminit();
  117: 	    } else {
  118: 	      &tth::tthinit();
  119: 	    }
  120:             if ($target eq 'web') {
  121:               $currentstring = &Apache::lonxml::xmlbegin().
  122:                                &Apache::lonxml::fontsettings();     
  123: 	    } elsif ($target eq 'tex') {
  124: 	      @Apache::londefdef::table = ();
  125: 	      $currentstring .= '\documentclass[letterpaper]{article}
  126:                                  \newcommand{\keephidden}[1]{}
  127:                                  \renewcommand{\deg}{$^{\circ}$}
  128:                                  \usepackage[dvips]{graphicx}
  129:                                  \usepackage{epsfig}\usepackage{calc}
  130:                                  \newenvironment{choicelist}{\begin{enumerate}}{\end{enumerate}}';
  131: 	    }
  132: 	   return $currentstring;
  133: 	}
  134:         sub end_html {
  135: 	    my ($target,$token) = @_;
  136:             my $currentstring = '';
  137:             if ($target eq 'web') {
  138: 		$currentstring = &Apache::lonxml::xmlend();
  139: 	    }
  140: 	   return $currentstring;
  141: 	}
  142: #-- <head> tag
  143:       sub start_head {
  144: 	    my ($target,$token) = @_;
  145:             my $currentstring = '';
  146:             if ($target eq 'web') {
  147:               $currentstring = $token->[4];     
  148: 	    } 
  149: 	   return $currentstring;
  150: 	}
  151:         sub end_head {
  152: 	    my ($target,$token) = @_;
  153:             my $currentstring = '';
  154:             if ($target eq 'web') {
  155:               $currentstring = &Apache::lonxml::registerurl(undef,$target).
  156:                                $token->[2];    
  157:             } 
  158: 	   return $currentstring;
  159: 	}
  160: #-- <map> tag
  161:       sub start_map {
  162: 	    my ($target,$token) = @_;
  163:             my $currentstring = '';
  164:             if ($target eq 'web') {
  165:               $currentstring = $token->[4];     
  166: 	    } 
  167: 	   return $currentstring;
  168: 	}
  169:         sub end_map {
  170: 	    my ($target,$token) = @_;
  171:             my $currentstring = '';
  172:             if ($target eq 'web') {
  173:               $currentstring = $token->[2];    
  174:             } 
  175: 	   return $currentstring;
  176: 	}
  177: #-- <select> tag
  178:       sub start_select {
  179: 	    my ($target,$token) = @_;
  180:             my $currentstring = '';
  181:             if ($target eq 'web') {
  182:               $currentstring = $token->[4];     
  183: 	    } 
  184: 	   return $currentstring;
  185: 	}
  186:         sub end_select {
  187: 	    my ($target,$token) = @_;
  188:             my $currentstring = '';
  189:             if ($target eq 'web') {
  190:               $currentstring = $token->[2];    
  191:             } 
  192: 	   return $currentstring;
  193: 	}
  194: #-- <option> tag
  195:       sub start_option {
  196: 	    my ($target,$token) = @_;
  197:             my $currentstring = '';
  198:             if ($target eq 'web') {
  199:               $currentstring = $token->[4];     
  200: 	    } 
  201: 	   return $currentstring;
  202: 	}
  203:         sub end_option {
  204: 	    my ($target,$token) = @_;
  205:             my $currentstring = '';
  206:             if ($target eq 'web') {
  207:               $currentstring = $token->[2];    
  208:             } 
  209: 	   return $currentstring;
  210: 	}
  211: #-- <input> tag
  212:       sub start_input {
  213: 	    my ($target,$token) = @_;
  214:             my $currentstring = '';
  215:             if ($target eq 'web') {
  216:               $currentstring = $token->[4];     
  217: 	    } 
  218: 	   return $currentstring;
  219: 	}
  220:         sub end_input {
  221: 	    my ($target,$token) = @_;
  222:             my $currentstring = '';
  223:             if ($target eq 'web') {
  224:               $currentstring = $token->[2];    
  225:             } 
  226: 	   return $currentstring;
  227: 	}
  228: #-- <textarea> tag
  229:       sub start_textarea {
  230: 	    my ($target,$token) = @_;
  231:             my $currentstring = '';
  232:             if ($target eq 'web') {
  233:               $currentstring = $token->[4];     
  234: 	    } 
  235: 	   return $currentstring;
  236: 	}
  237:         sub end_textarea {
  238: 	    my ($target,$token) = @_;
  239:             my $currentstring = '';
  240:             if ($target eq 'web') {
  241:               $currentstring = $token->[2];    
  242:             } 
  243: 	   return $currentstring;
  244: 	}
  245: #-- <form> tag
  246:       sub start_form {
  247: 	    my ($target,$token) = @_;
  248:             my $currentstring = '';
  249:             if ($target eq 'web') {
  250:               $currentstring = $token->[4];     
  251: 	    } 
  252: 	   return $currentstring;
  253: 	}
  254:         sub end_form {
  255: 	    my ($target,$token) = @_;
  256:             my $currentstring = '';
  257:             if ($target eq 'web') {
  258:               $currentstring = $token->[2];    
  259:             } 
  260: 	   return $currentstring;
  261: 	}
  262: #-- <title> tag
  263:       sub start_title {
  264: 	    my ($target,$token) = @_;
  265:             my $currentstring = '';
  266:             if ($target eq 'web') {
  267:               $currentstring = $token->[4];     
  268: 	    } elsif ($target eq 'tex') {
  269:               $currentstring .= '\keephidden{' 
  270: 	    }
  271:             if ($target eq 'meta') {
  272: 		$currentstring='<title>';
  273:                 &start_output();
  274:             }
  275: 	   return $currentstring;
  276: 	}
  277:         sub end_title {
  278: 	    my ($target,$token) = @_;
  279:             my $currentstring = '';
  280:             if ($target eq 'web') {
  281:               $currentstring = $token->[2];    
  282:             } elsif ($target eq 'tex') {
  283:               $currentstring .= '}';
  284: 	    }  
  285:             if ($target eq 'meta') {
  286:                &end_output();
  287:                $currentstring='</title>';
  288:             } 
  289: 	   return $currentstring;
  290: 	}
  291: #-- <meta> tag
  292:       sub start_meta {
  293: 	    my ($target,$token,$tagstack,$parstack,$parser) = @_;
  294:             my $currentstring = '';
  295:             if ($target eq 'web') {
  296: 	      my $args='';
  297: 	      if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
  298: 	      if ($args eq '') {
  299: 		&Apache::lonxml::get_all_text("/meta",$$parser[$#$parser]);
  300: 	      } else {
  301: 		$currentstring = $token->[4];
  302: 	      }
  303: 	    }
  304:             if ($target eq 'meta') {
  305: 		unless ($token->[2]->{'http-equiv'}) {
  306: 		    my $name=$token->[2]->{'name'};
  307:                     $name=~tr/A-Z/a-z/;
  308:                     $name=~s/\s/\_/g;
  309:                     if ($name) {
  310:                        $currentstring='<'.$name.'>'.
  311:                                          $token->[2]->{'content'}.
  312: 			              '</'.$name.'>';
  313: 		    }
  314:                 }
  315: 	    }
  316: 	   return $currentstring;
  317: 	}
  318:       sub end_meta {
  319: 	my ($target,$token,$tagstack,$parstack,$parser) = @_;
  320: 	my $currentstring = '';
  321: 	if ($target eq 'web') {
  322: 	  my $args='';
  323: 	  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
  324: 	  if ($args ne '') {
  325: 	    $currentstring = $token->[4];
  326: 	  }
  327: 	} 
  328: 	return $currentstring;
  329:       }
  330: #-- <body> tag
  331:         sub start_body {
  332:             my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
  333:             my $currentstring = '';
  334:             if ($target eq 'web') {
  335: 	      if (!$Apache::lonxml::registered) {
  336: 		$currentstring.='<head>'.
  337: 		    &Apache::lonxml::registerurl(undef,$target).'</head>';
  338: 	      }
  339: 	      my $onLoad='';
  340: 	      foreach my $key (keys(%{$token->[2]})) {
  341: 		if ($key =~ /^onload$/i) {
  342: 		  $onLoad.=$token->[2]->{$key}.';';
  343: 		  delete($token->[2]->{$key});
  344: 		}
  345: 	      }
  346: 	      $token->[2]->{'onLoad'}=&Apache::lonxml::loadevents().
  347: 		                       ';'.$onLoad;
  348: 	      my $onUnload='';
  349: 	      foreach my $key (keys(%{$token->[2]})) {
  350: 		if ($key =~ /^onunload$/i) {
  351: 		  $onUnload.=$token->[2]->{$key}.';';
  352: 		  delete($token->[2]->{$key});
  353: 		}
  354: 	      }
  355: 	      $token->[2]->{'onUnload'}=&Apache::lonxml::unloadevents().
  356: 		                         ';'.$onUnload;
  357: 
  358: 	      $currentstring .= '<'.$token->[1];
  359: 	      foreach (keys %{$token->[2]}) {
  360: 	      	$currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
  361: 	      }
  362: 	      $currentstring.='>';
  363: 	      if ($ENV{'request.state'} ne 'published') {
  364: 		$currentstring.=(<<EDITBUTTON);
  365: 		<form method="post">
  366: 		<input type="submit" name="editmode" value="Edit" />
  367: 		</form>
  368: EDITBUTTON
  369: 	      }
  370:        	    } elsif ($target eq 'tex') {
  371:               $currentstring = '\begin{document}';  
  372: 	    } 
  373: 	   return $currentstring;
  374: 	}
  375:         sub end_body {
  376: 	    my ($target,$token) = @_;
  377:             my $currentstring = '';
  378:             if ($target eq 'web') {
  379:               $currentstring = $token->[2];     
  380: 	    } elsif ($target eq 'tex') {
  381:               $currentstring = '\end{document}';  
  382: 	    } 
  383: 	   return $currentstring;
  384: 	}
  385: #-- <center> tag
  386:         sub start_center {
  387: 	    my ($target,$token) = @_;
  388:             my $currentstring = '';
  389:             if ($target eq 'web') {
  390:               $currentstring = $token->[4];     
  391: 	    } elsif ($target eq 'tex') {
  392:               $currentstring = '\begin{center}';  
  393: 	    }  elsif ($target eq 'latexsource') {
  394:               $currentstring = '\begin{center}';  
  395: 	    } 
  396: 	   return $currentstring;
  397: 	}
  398:         sub end_center {
  399: 	    my ($target,$token) = @_;
  400:             my $currentstring = '';
  401:             if ($target eq 'web') {
  402:               $currentstring = $token->[2];     
  403: 	    } elsif ($target eq 'tex') {
  404:               $currentstring = '\end{center}';  
  405: 	    }  elsif ($target eq 'latexsource') {
  406:               $currentstring = '\end{center}';  
  407: 	    } 
  408: 	   return $currentstring;
  409: 	}
  410: #-- <b> tag
  411:         sub start_b {
  412: 	    my ($target,$token) = @_;
  413:             my $currentstring = '';
  414:             if ($target eq 'web') {
  415:               $currentstring = $token->[4];     
  416: 	    } elsif ($target eq 'tex') {
  417:               $currentstring = '\textbf{';  
  418: 	    }  elsif ($target eq 'latexsource') {
  419:               $currentstring = '\textbf{';  
  420: 	    } 
  421: 	   return $currentstring;
  422: 	}
  423:         sub end_b {
  424: 	    my ($target,$token) = @_;
  425:             my $currentstring = '';
  426:             if ($target eq 'web') {
  427:               $currentstring = $token->[2];     
  428: 	    } elsif ($target eq 'tex') {
  429:               $currentstring = '}';  
  430: 
  431: 	    } elsif ($target eq 'latexsource') {
  432:               $currentstring = '}';  
  433: 	    } 
  434: 	   return $currentstring;
  435: 	}
  436: #-- <strong> tag
  437:         sub start_strong {
  438: 	    my ($target,$token) = @_;
  439:             my $currentstring = '';
  440:             if ($target eq 'web') {
  441:               $currentstring = $token->[4];     
  442: 	    } elsif ($target eq 'tex') {
  443:               $currentstring = '\textbf{';  
  444: 	    } elsif ($target eq 'latexsource') {
  445:               $currentstring = '\textbf{';  
  446: 	    } 
  447: 	   return $currentstring;
  448: 	}
  449:         sub end_strong {
  450: 	    my ($target,$token) = @_;
  451:             my $currentstring = '';
  452:             if ($target eq 'web') {
  453: 
  454:               $currentstring = $token->[2];     
  455: 	    } elsif ($target eq 'tex') {
  456:               $currentstring = '}';  
  457: 	    }  elsif ($target eq 'latexsource') {
  458:               $currentstring = '}';  
  459: 	    } 
  460: 	   return $currentstring;
  461: 	}
  462: #-- <h1> tag
  463:         sub start_h1 {
  464: 	    my ($target,$token) = @_;
  465:             my $currentstring = '';
  466:             if ($target eq 'web') {
  467: 	       $currentstring .= $token->[4];
  468: 	    } elsif ($target eq 'tex') {
  469: 		$currentstring .= '{\large \textbf{';
  470: 	    } elsif ($target eq 'meta') {
  471: 		$currentstring='<subject>';
  472:                 &start_output();
  473:             }
  474:            return $currentstring;
  475: 	}
  476:         sub end_h1 {
  477: 	    my ($target,$token) = @_;
  478:             my $currentstring = '';
  479:             if ($target eq 'web') {
  480: 	       $currentstring .= $token->[2];
  481: 	    } elsif ($target eq 'tex') {
  482: 		$currentstring .= '}}';
  483: 	    } elsif ($target eq 'meta') {
  484:                 &end_output();
  485: 		$currentstring='</subject>';
  486:             } 
  487:            return $currentstring;
  488: 	}
  489: #-- <h2> tag
  490:         sub start_h2 {
  491: 	    my ($target,$token) = @_;
  492:             my $currentstring = '';
  493:             if ($target eq 'web') {
  494: 	       $currentstring .= $token->[4];
  495: 	    } elsif ($target eq 'tex') {
  496: 		$currentstring .= '{\large \textbf{';
  497: 	    } 
  498:            return $currentstring;
  499: 	}
  500:         sub end_h2 {
  501: 	    my ($target,$token) = @_;
  502:             my $currentstring = '';
  503:             if ($target eq 'web') {
  504: 	       $currentstring .= $token->[2];
  505: 	    } elsif ($target eq 'tex') {
  506: 		$currentstring .= '}}';
  507: 	    } 
  508:            return $currentstring;
  509: 	}
  510: #-- <h3> tag
  511:         sub start_h3 {
  512: 	    my ($target,$token) = @_;
  513:             my $currentstring = '';
  514:             if ($target eq 'web') {
  515: 	       $currentstring .= $token->[4];
  516: 	    } elsif ($target eq 'tex') {
  517: 		$currentstring .= '{\large \textbf{';
  518: 	    } 
  519:            return $currentstring;
  520: 	}
  521:         sub end_h3 {
  522: 	    my ($target,$token) = @_;
  523:             my $currentstring = '';
  524:             if ($target eq 'web') {
  525: 	       $currentstring .= $token->[2];
  526: 	    } elsif ($target eq 'tex') {
  527: 		$currentstring .= '}}';
  528: 	    } 
  529:            return $currentstring;
  530: 	}
  531: #-- <h4> tag
  532:         sub start_h4 {
  533: 	    my ($target,$token) = @_;
  534:             my $currentstring = '';
  535:             if ($target eq 'web') {
  536: 	       $currentstring .= $token->[4];
  537: 	    } elsif ($target eq 'tex') {
  538: 		$currentstring .= '{\large \textbf{';
  539: 	    } 
  540:            return $currentstring;
  541: 	}
  542:         sub end_h4 {
  543: 	    my ($target,$token) = @_;
  544:             my $currentstring = '';
  545:             if ($target eq 'web') {
  546: 	       $currentstring .= $token->[2];
  547: 	    } elsif ($target eq 'tex') {
  548: 		$currentstring .= '}}';
  549: 	    } 
  550:            return $currentstring;
  551: 	}
  552: #-- <h5> tag
  553:         sub start_h5 {
  554: 	    my ($target,$token) = @_;
  555:             my $currentstring = '';
  556:             if ($target eq 'web') {
  557: 	       $currentstring .= $token->[4];
  558: 	    } elsif ($target eq 'tex') {
  559: 		$currentstring .= '{\large \textbf{';
  560: 	    } 
  561:            return $currentstring;
  562: 	}
  563:         sub end_h5 {
  564: 	    my ($target,$token) = @_;
  565:             my $currentstring = '';
  566:             if ($target eq 'web') {
  567: 	       $currentstring .= $token->[2];
  568: 	    } elsif ($target eq 'tex') {
  569: 		$currentstring .= '}}';
  570: 	    } 
  571:            return $currentstring;
  572: 	}
  573: #-- <h6> tag
  574:         sub start_h6 {
  575: 	    my ($target,$token) = @_;
  576:             my $currentstring = '';
  577:             if ($target eq 'web') {
  578: 	       $currentstring .= $token->[4];
  579: 	    } elsif ($target eq 'tex') {
  580: 		$currentstring .= '{\large \textbf{';
  581: 	    } 
  582:            return $currentstring;
  583: 	}
  584:         sub end_h6 {
  585: 	    my ($target,$token) = @_;
  586:             my $currentstring = '';
  587:             if ($target eq 'web') {
  588: 	       $currentstring .= $token->[2];
  589: 	    } elsif ($target eq 'tex') {
  590: 		$currentstring .= '}}';
  591: 	    } 
  592:            return $currentstring;
  593: 	}
  594: #--- <cite> tag
  595:         sub start_cite {
  596: 	    my ($target,$token) = @_;
  597:             my $currentstring = '';
  598:             if ($target eq 'web') {
  599: 	       $currentstring .= $token->[4];
  600: 	    } elsif ($target eq 'tex') {
  601: 		$currentstring .= "\\textit{";
  602: 	    }  elsif ($target eq 'latexsource') {
  603: 		$currentstring .= "\\textit{";
  604: 	    } 
  605:            return $currentstring;
  606: 	}
  607:         sub end_cite {
  608: 	    my ($target,$token) = @_;
  609:             my $currentstring = '';
  610:             if ($target eq 'web') {
  611: 	       $currentstring .= $token->[2];
  612: 	    } elsif ($target eq 'tex') {
  613: 		$currentstring .= "}";
  614: 	    }  elsif ($target eq 'latexsource') {
  615: 		$currentstring .= "}";
  616: 	    } 
  617:            return $currentstring;
  618: 	}
  619: #-- <i> tag
  620:         sub start_i {
  621: 	    my ($target,$token) = @_;
  622:             my $currentstring = '';
  623:             if ($target eq 'web') {
  624: 	       $currentstring .= $token->[4];
  625: 	    } elsif ($target eq 'tex') {
  626: 		$currentstring .= '\textit{';
  627: 	    }  elsif ($target eq 'latexsource') {
  628: 		$currentstring .= '\textit{';
  629: 	    } 
  630:            return $currentstring;
  631: 	}
  632:         sub end_i {
  633: 	    my ($target,$token) = @_;
  634:             my $currentstring = '';
  635:             if ($target eq 'web') {
  636: 	       $currentstring .= $token->[2];
  637: 	    } elsif ($target eq 'tex') {
  638: 		$currentstring .= '}';
  639: 	    } elsif ($target eq 'latexsource') {
  640: 		$currentstring .= '}';
  641: 	    } 
  642:            return $currentstring;
  643: 	}
  644: #-- <address> tag
  645:         sub start_address {
  646: 	    my ($target,$token) = @_;
  647:             my $currentstring = '';
  648:             if ($target eq 'web') {
  649: 	       $currentstring .= $token->[4];
  650: 	    } elsif ($target eq 'tex') {
  651: 		$currentstring .= "\\textit{";
  652: 	    } elsif ($target eq 'latexsource') {
  653: 		$currentstring .= "\\textit{";
  654: 	    } 
  655:            return $currentstring;
  656: 	}
  657:         sub end_address {
  658: 	    my ($target,$token) = @_;
  659:             my $currentstring = '';
  660:             if ($target eq 'web') {
  661: 	       $currentstring .= $token->[2];
  662: 	    } elsif ($target eq 'tex') {
  663: 		$currentstring .= "}";
  664: 	    } elsif ($target eq 'latexsource') {
  665: 		$currentstring .= "}";
  666: 	    }
  667:            return $currentstring;
  668: 	}
  669: #-- <dfn> tag
  670:         sub start_dfn {
  671: 	    my ($target,$token) = @_;
  672:             my $currentstring = '';
  673:             if ($target eq 'web') {
  674: 	       $currentstring .= $token->[4];
  675: 	    } elsif ($target eq 'tex') {
  676: 		$currentstring .= "\\textit{";
  677: 	    } elsif ($target eq 'latexsource') {
  678: 		$currentstring .= "\\textit{";
  679: 	    } 
  680:            return $currentstring;
  681: 	}
  682:         sub end_dfn {
  683: 	    my ($target,$token) = @_;
  684:             my $currentstring = '';
  685:             if ($target eq 'web') {
  686: 	       $currentstring .= $token->[2];
  687: 	    } elsif ($target eq 'tex') {
  688: 		$currentstring .= "}";
  689: 	    } elsif ($target eq 'latexsource') {
  690: 		$currentstring .= "}";
  691: 	    } 
  692:            return $currentstring;
  693: 	}
  694: #-- <tt> tag
  695:         sub start_tt {
  696: 	    my ($target,$token) = @_;
  697:             my $currentstring = '';
  698:             if ($target eq 'web') {
  699: 	       $currentstring .= $token->[4];
  700: 	    } elsif ($target eq 'tex') {
  701: 		$currentstring .= '\texttt{';
  702: 	    } elsif ($target eq 'latexsource') {
  703: 		$currentstring .= '\texttt{';
  704: 	    } 
  705:            return $currentstring;
  706: 	}
  707:         sub end_tt {
  708: 	    my ($target,$token) = @_;
  709:             my $currentstring = '';
  710:             if ($target eq 'web') {
  711: 	       $currentstring .= $token->[2];
  712: 	    } elsif ($target eq 'tex') {
  713: 		$currentstring .= '}';
  714: 	    } elsif ($target eq 'latexsource') {
  715: 		$currentstring .= '}';
  716: 	    }
  717:            return $currentstring;
  718: 	}
  719: #-- <kbd> tag
  720:         sub start_kbd {
  721: 	    my ($target,$token) = @_;
  722:             my $currentstring = '';
  723:             if ($target eq 'web') {
  724: 	       $currentstring .= $token->[4];
  725: 	    } elsif ($target eq 'tex') {
  726: 		$currentstring .= "\\texttt";
  727: 	    } elsif ($target eq 'latexsource') {
  728: 		$currentstring .= "\\texttt{";
  729: 	    } 
  730:            return $currentstring;
  731: 	}
  732:         sub end_kbd {
  733: 	    my ($target,$token) = @_;
  734:             my $currentstring = '';
  735:             if ($target eq 'web') {
  736: 	       $currentstring .= $token->[2];
  737: 	    } elsif ($target eq 'tex') {
  738: 		$currentstring .= "}";
  739: 	    } elsif ($target eq 'latexsource') {
  740: 		$currentstring .= "}";
  741: 	    } 
  742:            return $currentstring;
  743: 	}
  744: #-- <code> tag
  745:         sub start_code {
  746: 	    my ($target,$token) = @_;
  747:             my $currentstring = '';
  748:             if ($target eq 'web') {
  749: 	       $currentstring .= $token->[4];
  750: 	    } elsif ($target eq 'tex') {
  751: 		$currentstring .= '\texttt{';
  752: 	    } 
  753:            return $currentstring;
  754: 	}
  755:         sub end_code {
  756: 	    my ($target,$token) = @_;
  757:             my $currentstring = '';
  758:             if ($target eq 'web') {
  759: 	       $currentstring .= $token->[2];
  760: 	    } elsif ($target eq 'tex') {
  761: 		$currentstring .= '}';
  762: 	    } 
  763:            return $currentstring;
  764: 	}
  765: #-- <em> tag
  766:         sub start_em {
  767: 	    my ($target,$token) = @_;
  768:             my $currentstring = '';
  769:             if ($target eq 'web') {
  770: 	       $currentstring .= $token->[4];
  771: 	    } elsif ($target eq 'tex') {
  772: 		$currentstring .= '\emph{';
  773: 	    } elsif ($target eq 'latexsource') {
  774: 		$currentstring .= '\emph{';
  775: 	    } 
  776:            return $currentstring;
  777: 	}
  778:         sub end_em {
  779: 	    my ($target,$token) = @_;
  780:             my $currentstring = '';
  781:             if ($target eq 'web') {
  782: 	       $currentstring .= $token->[2];
  783: 	    } elsif ($target eq 'tex') {
  784: 		$currentstring .= '}';
  785: 	    } elsif ($target eq 'latexsource') {
  786: 		$currentstring .= '}';
  787: 	    }  
  788:            return $currentstring;
  789: 	}
  790: #-- <q> tag
  791:         sub start_q {
  792: 	    my ($target,$token) = @_;
  793:             my $currentstring = '';
  794:             if ($target eq 'web') {
  795: 	       $currentstring .= $token->[4];
  796: 	    } elsif ($target eq 'tex') {
  797: 		$currentstring .= "\\emph{";
  798: 	    }  elsif ($target eq 'latexsource') {
  799: 		$currentstring .= "\\emph{";
  800: 	    }
  801:            return $currentstring;
  802: 	}
  803:         sub end_q {
  804: 	    my ($target,$token) = @_;
  805:             my $currentstring = '';
  806:             if ($target eq 'web') {
  807: 	       $currentstring .= $token->[2];
  808: 	    } elsif ($target eq 'tex') {
  809: 		$currentstring .= "}";
  810: 	    } elsif ($target eq 'latexsource') {
  811: 		$currentstring .= "}";
  812: 	    }  
  813:            return $currentstring;
  814: 	}
  815: #-- <p> tag
  816:         sub start_p {
  817: 	    my ($target,$token) = @_;
  818:             my $currentstring = '';
  819:             if ($target eq 'web') {
  820: 	       $currentstring .= $token->[4];
  821: 	    } elsif ($target eq 'tex') {
  822: 		$currentstring .= '{\par ';
  823: 	    } elsif ($target eq 'latexsource') {
  824: 		$currentstring .= '{\par ';
  825: 	    } 
  826:            return $currentstring;
  827: 	}
  828:         sub end_p {
  829: 	    my ($target,$token) = @_;
  830:             my $currentstring = '';
  831:             if ($target eq 'web') {
  832: 	       $currentstring .= $token->[2];
  833: 	    } elsif ($target eq 'tex') {
  834: 	        $currentstring .= '}';
  835:             } elsif ($target eq 'latexsource') {
  836: 	        $currentstring .= '}';
  837:             }
  838:            return $currentstring;
  839: 	}
  840: #-- <br> tag
  841:         sub start_br {
  842: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  843:             my $currentstring = '';
  844:             if ($target eq 'web') {
  845: 	       $currentstring .= $token->[4];
  846: 	    } elsif ($target eq 'tex') {
  847: 		if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
  848: 		    $currentstring .= '\vskip 0.2 mm';
  849: 		}
  850: 	    } elsif ($target eq 'latexsource') {
  851: 		$currentstring .= '\\';
  852: 	    } 
  853:            return $currentstring;
  854: 	}
  855:         sub end_br {
  856: 	    my ($target,$token) = @_;
  857:             my $currentstring = '';
  858:             if ($target eq 'web') {
  859: 	       $currentstring .= $token->[2];
  860: 	    }
  861:            return $currentstring;
  862: 	}
  863: #-- <big> tag
  864:         sub start_big {
  865: 	    my ($target,$token) = @_;
  866:             my $currentstring = '';
  867:             if ($target eq 'web') {
  868: 	       $currentstring .= $token->[4];
  869: 	    } elsif ($target eq 'tex') {
  870: 		$currentstring .= '\large{';
  871: 	    } elsif ($target eq 'latexsource') {
  872: 		$currentstring .= '{\Large ';
  873: 	    }  
  874:            return $currentstring;
  875: 	}
  876:         sub end_big {
  877: 	    my ($target,$token) = @_;
  878:             my $currentstring = '';
  879:             if ($target eq 'web') {
  880: 	       $currentstring .= $token->[2];
  881: 	    } elsif ($target eq 'tex') {
  882: 	        $currentstring .= '}';
  883:             } elsif ($target eq 'latexsource') {
  884: 	        $currentstring .= '}';
  885:             }
  886:            return $currentstring;
  887: 	}
  888: #-- <small> tag
  889:         sub start_small {
  890: 	    my ($target,$token) = @_;
  891:             my $currentstring = '';
  892:             if ($target eq 'web') {
  893: 	       $currentstring .= $token->[4];
  894: 	    } elsif ($target eq 'tex') {
  895: 		$currentstring .= '{\footnotesize ';
  896: 	    } elsif ($target eq 'latexsource') {
  897: 		$currentstring .= '{\footnotesize ';
  898: 	    } 
  899:            return $currentstring;
  900: 	}
  901:         sub end_small {
  902: 	    my ($target,$token) = @_;
  903:             my $currentstring = '';
  904:             if ($target eq 'web') {
  905: 	       $currentstring .= $token->[2];
  906: 	    } elsif ($target eq 'tex') {
  907: 	        $currentstring .= '}';
  908:             } elsif ($target eq 'latexsource') {
  909: 	        $currentstring .= '}';
  910:             }
  911:            return $currentstring;
  912: 	}
  913: #-- <basefont> tag
  914:       sub start_basefont {
  915: 	my ($target,$token) = @_;
  916: 	my $currentstring = '';
  917: 	if ($target eq 'web') {
  918: 	  $currentstring = $token->[4];     
  919: 	} 
  920: 	return $currentstring;
  921:       }
  922:       sub end_basefont {
  923: 	my ($target,$token) = @_;
  924: 	my $currentstring = '';
  925: 	if ($target eq 'web') {
  926: 	  $currentstring = $token->[4];     
  927: 	} 
  928: 	return $currentstring;
  929:       }
  930: #-- <font> tag
  931:          sub start_font {
  932: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  933:             my $currentstring = '';
  934:             if ($target eq 'web') {
  935: 	      my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
  936: 	      if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode++;}
  937:               $currentstring = $token->[4];     
  938: 	    } 
  939: 	   return $currentstring;
  940: 	}
  941:         sub end_font {
  942: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  943:             my $currentstring = '';
  944:             if ($target eq 'web') {
  945: 	      my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
  946: 	      if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;}
  947:               $currentstring = $token->[2];    
  948:             } 
  949: 	   return $currentstring;
  950: 	} 
  951: #-- <strike> tag
  952:         sub start_strike {
  953: 	    my ($target,$token) = @_;
  954:             my $currentstring = '';
  955:             if ($target eq 'web') {
  956: 	       $currentstring .= $token->[4];
  957: 	    } elsif ($target eq 'tex') {
  958: 		$currentstring .= '\underline{';
  959: 	    } 
  960:            return $currentstring;
  961: 	}
  962:         sub end_strike {
  963: 	    my ($target,$token) = @_;
  964:             my $currentstring = '';
  965:             if ($target eq 'web') {
  966: 	       $currentstring .= $token->[2];
  967: 	    } elsif ($target eq 'tex') {
  968: 	        $currentstring .= '}';
  969:             }
  970:            return $currentstring;
  971: 	}
  972: #-- <s> tag
  973:         sub start_s {
  974: 	    my ($target,$token) = @_;
  975:             my $currentstring = '';
  976:             if ($target eq 'web') {
  977: 	       $currentstring .= $token->[4];
  978: 	    } elsif ($target eq 'tex') {
  979: 		$currentstring .= '\underline{';
  980: 	    } 
  981:            return $currentstring;
  982: 	}
  983:         sub end_s {
  984: 	    my ($target,$token) = @_;
  985:             my $currentstring = '';
  986:             if ($target eq 'web') {
  987: 	       $currentstring .= $token->[2];
  988: 	    } elsif ($target eq 'tex') {
  989: 	        $currentstring .= '}';
  990:             }
  991:            return $currentstring;
  992: 	}
  993: #-- <sub> tag
  994:         sub start_sub {
  995: 	    my ($target,$token) = @_;
  996:             my $currentstring = '';
  997:             if ($target eq 'web') {
  998: 	       $currentstring .= $token->[4];
  999: 	    } elsif ($target eq 'tex') {
 1000: 		$currentstring .= "\$_{ ";
 1001: 	    } 
 1002:            return $currentstring;
 1003: 	}
 1004:         sub end_sub {
 1005: 	    my ($target,$token) = @_;
 1006:             my $currentstring = '';
 1007:             if ($target eq 'web') {
 1008: 	       $currentstring .= $token->[2];
 1009: 	    } elsif ($target eq 'tex') {
 1010: 	        $currentstring .= " }\$";
 1011:             }
 1012:            return $currentstring;
 1013: 	}
 1014: #-- <sup> tag
 1015:         sub start_sup {
 1016: 	    my ($target,$token) = @_;
 1017:             my $currentstring = '';
 1018:             if ($target eq 'web') {
 1019: 	       $currentstring .= $token->[4];
 1020: 	    } elsif ($target eq 'tex') {
 1021: 		$currentstring .= "\$^{ ";
 1022: 	    } 
 1023:            return $currentstring;
 1024: 	}
 1025:         sub end_sup {
 1026: 	    my ($target,$token) = @_;
 1027:             my $currentstring = '';
 1028:             if ($target eq 'web') {
 1029: 	       $currentstring .= $token->[2];
 1030: 	    } elsif ($target eq 'tex') {
 1031: 	        $currentstring .= " }\$";
 1032:             }
 1033:            return $currentstring;
 1034: 	}
 1035: #-- <hr> tag
 1036:         sub start_hr {
 1037: 	    my ($target,$token) = @_;
 1038:             my $currentstring = '';
 1039:             if ($target eq 'web') {
 1040: 	       $currentstring .= $token->[4];
 1041: 	    } elsif ($target eq 'tex') {
 1042: 		$currentstring .= '\vskip 0 mm \noindent\makebox[\textwidth/2 ][b]{\hrulefill}\vskip 0 mm ';
 1043: 	    } 
 1044:            return $currentstring;
 1045: 	}
 1046:         sub end_hr {
 1047: 	    my ($target,$token) = @_;
 1048:             my $currentstring = '';
 1049:             if ($target eq 'web') {
 1050: 	       $currentstring .= $token->[2];
 1051: 	    } elsif ($target eq 'tex') {
 1052: 	    } 
 1053:            return $currentstring;
 1054: 	}
 1055: #-- <div> tag
 1056:         sub start_div {
 1057: 	    my ($target,$token) = @_;
 1058:             my $currentstring = '';
 1059:             if ($target eq 'web') {
 1060: 	       $currentstring .= $token->[4];
 1061: 	    } 
 1062:            return $currentstring;
 1063: 	}
 1064:         sub end_div {
 1065: 	    my ($target,$token) = @_;
 1066:             my $currentstring = '';
 1067:             if ($target eq 'web') {
 1068: 	       $currentstring .= $token->[2];
 1069: 	    } 
 1070:            return $currentstring;
 1071: 	}
 1072: #-- <a> tag
 1073:         sub start_a {
 1074: 	    my ($target,$token) = @_;
 1075:             my $currentstring = '';
 1076:             if ($target eq 'web') {
 1077: 	       $currentstring .= $token->[4];
 1078: 	    } elsif ($target eq 'tex') {
 1079: 	    }
 1080:            return $currentstring;
 1081: 	}
 1082:         sub end_a {
 1083: 	    my ($target,$token,$tagstack,$stackref) = @_;
 1084:             my $currentstring = '';
 1085:             if ($target eq 'web') {
 1086: 	       $currentstring .= $token->[2];
 1087: 	    } elsif ($target eq 'tex') {
 1088:                 my  $tempor_var = $stackref->[$#$stackref];
 1089: 		if (index($tempor_var,'name') != -1 ) {
 1090: 		    $tempor_var =~ s/name=([^,]*),/$1/g;
 1091: 	        } elsif (index($tempor_var,'href') != -1 ) {
 1092: 		    $tempor_var =~ s/href=([^,]*),/$1/g;
 1093: 	        $currentstring .= " \\ref{$tempor_var}";
 1094: 	        }
 1095:             }
 1096:            return $currentstring;
 1097: 	}
 1098: #-- <li> tag
 1099:         sub start_li {
 1100: 	    my ($target,$token,$tagstack,$stackref) = @_;
 1101:             my $currentstring = '';
 1102:             if ($target eq 'web') {
 1103:               $currentstring = $token->[4];     
 1104: 	    } elsif ($target eq 'tex') {
 1105:                 my  $tempor_var = $stackref->[$#$stackref];
 1106:                 if (index($tempor_var,'circle') != -1 ) {
 1107: 	          $currentstring .= " \\item[o] ";
 1108: 	        } elsif (index($tempor_var,'square') != -1 ) {
 1109: 	               $currentstring .= " \\item[$\Box$] ";
 1110: 	        } elsif ($tempor_var ne '') { 
 1111: 		       $_ = $tempor_var;
 1112:                        m/my\s*([^=]*)=/;
 1113: 		       $currentstring .= " \\item[$1] ";
 1114: 		} else {
 1115: 		    $currentstring .= " \\item ";
 1116: 	        }  
 1117: 	    } 
 1118: 	   return $currentstring;
 1119: 	}
 1120:         sub end_li {
 1121: 	    my ($target,$token) = @_;
 1122:             my $currentstring = '';
 1123:             if ($target eq 'web') {
 1124:               $currentstring = $token->[2];     
 1125: 	    } 
 1126: 	   return $currentstring;
 1127: 	}
 1128: #-- <u> tag
 1129:         sub start_u {
 1130: 	    my ($target,$token) = @_;
 1131:             my $currentstring = '';
 1132:             if ($target eq 'web') {
 1133: 	       $currentstring .= $token->[4];
 1134: 	    } elsif ($target eq 'tex') {
 1135: 		$currentstring .= '\underline{';
 1136: 	    } 
 1137:            return $currentstring;
 1138: 	}
 1139:         sub end_u {
 1140: 	    my ($target,$token) = @_;
 1141:             my $currentstring = '';
 1142:             if ($target eq 'web') {
 1143: 	       $currentstring .= $token->[2];
 1144: 	    } elsif ($target eq 'tex') {
 1145: 	        $currentstring .= '}';
 1146:             }
 1147:            return $currentstring;
 1148: 	}
 1149: #-- <ul> tag
 1150:         sub start_ul {
 1151: 	    my ($target,$token) = @_;
 1152:             my $currentstring = '';
 1153:             if ($target eq 'web') {
 1154:               $currentstring = $token->[4];     
 1155: 	    } elsif ($target eq 'tex') {
 1156:               $currentstring = '\begin{itemize}';  
 1157: 	    } 
 1158: 	   return $currentstring;
 1159: 	}
 1160:         sub end_ul {
 1161: 	    my ($target,$token) = @_;
 1162:             my $currentstring = '';
 1163:             if ($target eq 'web') {
 1164:               $currentstring = $token->[2];     
 1165: 	    } elsif ($target eq 'tex') {
 1166:               $currentstring = '\end{itemize}';  
 1167: 	    } 
 1168: 	   return $currentstring;
 1169: 	}
 1170: #-- <menu> tag
 1171:         sub start_menu {
 1172: 	    my ($target,$token) = @_;
 1173:             my $currentstring = '';
 1174:             if ($target eq 'web') {
 1175:               $currentstring = $token->[4];     
 1176: 	    } elsif ($target eq 'tex') {
 1177:               $currentstring = " \\begin{itemize} ";  
 1178: 	    } 
 1179: 	   return $currentstring;
 1180: 	}
 1181:         sub end_menu {
 1182: 	    my ($target,$token) = @_;
 1183:             my $currentstring = '';
 1184:             if ($target eq 'web') {
 1185:               $currentstring = $token->[2];     
 1186: 	    } elsif ($target eq 'tex') {
 1187:               $currentstring = " \\end{itemize}";  
 1188: 	    } 
 1189: 	   return $currentstring;
 1190: 	}
 1191: #-- <dir> tag
 1192:         sub start_dir {
 1193: 	    my ($target,$token) = @_;
 1194:             my $currentstring = '';
 1195:             if ($target eq 'web') {
 1196:               $currentstring = $token->[4];     
 1197: 	    } elsif ($target eq 'tex') {
 1198:               $currentstring = " \\begin{itemize} ";  
 1199: 	    } 
 1200: 	   return $currentstring;
 1201: 	}
 1202:         sub end_dir {
 1203: 	    my ($target,$token) = @_;
 1204:             my $currentstring = '';
 1205:             if ($target eq 'web') {
 1206:               $currentstring = $token->[2];     
 1207: 	    } elsif ($target eq 'tex') {
 1208:               $currentstring = " \\end{itemize}";  
 1209: 	    } 
 1210: 	   return $currentstring;
 1211: 	}
 1212: #-- <ol> tag
 1213:         sub start_ol {
 1214: 	    my ($target,$token) = @_;
 1215:             my $currentstring = '';
 1216:             if ($target eq 'web') {
 1217:               $currentstring = $token->[4];     
 1218: 	    } elsif ($target eq 'tex') {
 1219:               $currentstring = '\begin{enumerate}';  
 1220: 	    } 
 1221: 	   return $currentstring;
 1222: 	}
 1223:         sub end_ol {
 1224: 	    my ($target,$token) = @_;
 1225:             my $currentstring = '';
 1226:             if ($target eq 'web') {
 1227:               $currentstring = $token->[2];     
 1228: 	    } elsif ($target eq 'tex') {
 1229:               $currentstring = '\end{enumerate}';  
 1230: 	    } 
 1231: 	   return $currentstring;
 1232: 	}
 1233: #-- <dl> tag
 1234:         sub start_dl {
 1235: 	    my ($target,$token) = @_;
 1236:             my $currentstring = '';
 1237:             if ($target eq 'web') {
 1238:               $currentstring = $token->[4];     
 1239: 	    } elsif ($target eq 'tex') {
 1240:               $currentstring = '\begin{description}';  
 1241: 	    } 
 1242: 	   return $currentstring;
 1243: 	}
 1244:         sub end_dl {
 1245: 	    my ($target,$token) = @_;
 1246:             my $currentstring = '';
 1247:             if ($target eq 'web') {
 1248:               $currentstring = $token->[2];     
 1249: 	    } elsif ($target eq 'tex') {
 1250:               $currentstring = '\end{description}';  
 1251: 	    } 
 1252: 	   return $currentstring;
 1253: 	}
 1254: #-- <dt> tag
 1255:         sub start_dt {
 1256: 	    my ($target,$token) = @_;
 1257:             my $currentstring = '';
 1258:             if ($target eq 'web') {
 1259:               $currentstring = $token->[4];     
 1260: 	    } elsif ($target eq 'tex') {
 1261:               $currentstring = '\item[';  
 1262: 	    } 
 1263: 	   return $currentstring;
 1264: 	}
 1265:         sub end_dt {
 1266: 	    my ($target,$token) = @_;
 1267:             my $currentstring = '';
 1268:             if ($target eq 'web') {
 1269:               $currentstring = $token->[2];    
 1270:             } elsif ($target eq 'tex') {
 1271:               $currentstring = ']';  
 1272: 	    } 
 1273: 	   return $currentstring;
 1274: 	}
 1275: #-- <dd> tag
 1276:         sub start_dd {
 1277: 	    my ($target,$token) = @_;
 1278:             my $currentstring = '';
 1279:             if ($target eq 'web') {
 1280:               $currentstring = $token->[4];     
 1281: 	    } 
 1282: 	   return $currentstring;
 1283: 	}
 1284:         sub end_dd {
 1285: 	    my ($target,$token) = @_;
 1286:             my $currentstring = '';
 1287:             if ($target eq 'web') {
 1288:               $currentstring = $token->[2];    
 1289:             } 
 1290: 	   return $currentstring;
 1291: 	}
 1292: #-- <table> tag
 1293: sub start_table {
 1294:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1295:     my $currentstring = '';
 1296:     if ($target eq 'web') {
 1297: 	$currentstring = $token->[4];     
 1298:     } elsif ($target eq 'tex') {
 1299: 	my $aa = {};
 1300: 	push @Apache::londefdef::table, $aa; 
 1301: 	$Apache::londefdef::table[-1]{'row_number'} = -1;
 1302: 	$Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';
 1303: 	my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval);
 1304: 	unless (defined $border) { $border = 0; }
 1305: 	if ($border) { 
 1306: 	    $Apache::londefdef::table[-1]{'hinc'} = '\hline '; 
 1307: 	    $Apache::londefdef::table[-1]{'vinc'} = '&'; 
 1308: 	    $Apache::londefdef::table[-1]{'vvinc'} = '|';
 1309: 	} else {
 1310: 	    $Apache::londefdef::table[-1]{'hinc'} = ''; 
 1311: 	    $Apache::londefdef::table[-1]{'vinc'} = '&'; 
 1312: 	    $Apache::londefdef::table[-1]{'vvinc'} = '';
 1313: 	}
 1314: 	my $width;
 1315: 	foreach my $key (keys(%{$token->[2]})) {
 1316: 	    if ($key =~ /^width$/i) {
 1317: 		$width = &Apache::lonxml::get_param($key,$parstack,$safeeval);
 1318: 	    }
 1319: 	}
 1320: 	if (defined($width)) { $Apache::londefdef::table[-1]{'width'}=$width; }
 1321:     }
 1322:     return $currentstring;
 1323: }
 1324:         sub end_table {
 1325: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1326:             my $currentstring = '';
 1327:             if ($target eq 'web') {
 1328:               $currentstring = $token->[2];     
 1329: 	    } elsif ($target eq 'tex') {
 1330: 		my $inmemory = '';
 1331: 		my $output = '';
 1332:                 #construct header of the table
 1333: 		my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
 1334: 		my $in;
 1335: 		for ($in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {
 1336: 		    $header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};
 1337: 		}
 1338: 		$header_of_table .= '}';
 1339:                 #fill the table
 1340: 		for ($in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
 1341: 		    $output .=  $Apache::londefdef::table[-1]{'rowdata'}[$in];
 1342: 		    chop $output;
 1343: 		    $output .= ' \\\\ ';
 1344: 		}
 1345:                 #define the length of the table cells
 1346: 		my @lengthforoutput = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);
 1347: 		my $how_many_columns = $#lengthforoutput + 1; #total number of columns in the table 
 1348: 		my $filled_columns = 0; #number of columns with information about width
 1349: 		my $available_space = ' ';
 1350: 		foreach my $tempo_length (@{ $Apache::londefdef::table[-1]{'lengthrow'} }) {
 1351: 		    my @length = split(/,/,$tempo_length);
 1352: 		    for (my $ico=0;$ico<=$#lengthforoutput;$ico++) {
 1353: 			$lengthforoutput[$ico] =~ m/(\d*\.?\d*)\s*(\w+)/;
 1354: 			my $old_value = $1;
 1355: 			my $old_unit = $2; 
 1356: 			if ($old_unit eq 'cm') { 
 1357: 			    $old_value = $old_value * 10;
 1358: 			} elsif ($old_unit eq 'in') { 
 1359: 			    $old_value = $old_value * 25.4;
 1360: 			} elsif ($old_unit eq 'pt') {
 1361: 			    $old_value = $old_value * 25.4/72.27;
 1362: 			} elsif ($old_unit eq 'pc') {
 1363: 			    $old_value = $old_value * 25.4/6.022;
 1364: 			}
 1365: 			$old_unit = 'mm';
 1366:  			$length[$ico] =~ m/(\d*\.?\d*)\s*(\w+)/;
 1367: 			my $new_value = $1;
 1368: 			my $new_unit = $2;
 1369: 			if ($new_unit eq 'cm') { 
 1370: 			    $new_value = $new_value * 10;
 1371: 			} elsif ($old_unit eq 'in') { 
 1372: 			    $new_value = $new_value * 25.4;
 1373: 			} elsif ($old_unit eq 'pt') {
 1374: 			    $new_value = $new_value * 25.4/72.27;
 1375: 			} elsif ($old_unit eq 'pc') {
 1376: 			    $new_value = $new_value * 25.4/6.022;
 1377: 			}
 1378: 			$new_unit = 'mm';
 1379: 			if ($old_value < $new_value) {
 1380: 			    $lengthforoutput[$ico] = $new_value.' mm';
 1381: 			} else {
 1382: 			    $lengthforoutput[$ico] = $old_value.' mm';
 1383: 			}		 
 1384: 		    }
 1385: 		}
 1386: 		for (my $ico=0;$ico<=$#lengthforoutput;$ico++) {
 1387: 		    if (not $lengthforoutput[$ico]=~m/^\s*0\s*\w*\s*$/) {
 1388: 			$filled_columns++;
 1389: 			$available_space = $available_space.' - '.$lengthforoutput[$ico];
 1390: 		    }
 1391: 		}
 1392: 		my $temp_file;
 1393: 		my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.tbl";
 1394: 		if (-e $filename) {
 1395: 		    $temp_file = Apache::File->new($filename); 
 1396: 		    my @tbl_file_content = <$temp_file>;
 1397: 		    my ($one,$two,$three) = split(/,/,$tbl_file_content[0]);
 1398: 		        $how_many_columns+=$one-1;
 1399: 		        $filled_columns+=$two;
 1400: 		    if($three=~/\S/) {$available_space = $available_space.' - '.$three;}
 1401: 		} else {
 1402: 		    $temp_file = Apache::File->new('>>'.$filename); 
 1403: 		}		
 1404: 		print $temp_file "$how_many_columns,$filled_columns,$available_space\n";
 1405: 		$output =~ s/\\parbox{TOBECHANGEDONNUMBER}{}/\\parbox{1 mm}{}/g;
 1406: 		$output =~ s/\\parbox{TOBECHANGEDONNUMBER}/\\parbox{\$SpacePerColumn}/g;
 1407: 		my @tagar = @$tagstack;
 1408: 		my $signature = 1;
 1409: 		for (my $ico=0;$ico<$#tagar;$ico++) {
 1410: 		     if ($tagar[$ico] eq 'table') { $signature = 0; }
 1411: 		}
 1412: 		if ($signature) {
 1413: 		    my $NumberEmptyLength = $how_many_columns - $filled_columns;		
 1414: 		    my $SpacePerColumn = '(\textwidth '.$available_space.')/'.$NumberEmptyLength;
 1415: 		    my $shorthand = ($NumberEmptyLength+1)*4;
 1416: 		    $output =~ s/\$SpacePerColumn/$SpacePerColumn - $shorthand mm/g;
 1417: 		}	
 1418: 		$Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm ';
 1419: 		if ($#Apache::londefdef::table > 0) {
 1420: 		    $inmemory = $Apache::londefdef::table[-1]{'output'};
 1421: 		    pop @Apache::londefdef::table;
 1422: 		    $Apache::londefdef::table[-1]{'rowdata'}[$Apache::londefdef::table[-1]{'row_number'}] .= $inmemory
 1423: 		} else {
 1424: 		    $currentstring = $Apache::londefdef::table[-1]{'output'};
 1425: 		    $currentstring =~ s/\\\\\s+\\\\/\\\\/g; 
 1426: 		    pop @Apache::londefdef::table;
 1427: 		    if (-e $filename) {
 1428: 			unlink $filename;
 1429: 		    }
 1430: 		}
 1431: 	    }
 1432: 	   return $currentstring;
 1433: 	}
 1434: #-- <tr> tag
 1435:         sub start_tr {
 1436: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1437:             my $currentstring = '';
 1438:             if ($target eq 'web') {
 1439:               $currentstring = $token->[4];     
 1440: 	    } elsif ($target eq 'tex') {
 1441: 		$Apache::londefdef::table[-1]{'row_number'}++;
 1442: 		my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval),0,1);
 1443: 		if ($alignchar ne '') {
 1444: 		    push @ {$Apache::londefdef::table[-1]{'rows'} }, $alignchar;
 1445: 		} else {
 1446: 		    push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
 1447: 		}
 1448: 		push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
 1449: 		$Apache::londefdef::table[-1]{'counter_columns'} = -1;
 1450: 		$Apache::londefdef::table[-1]{'length'} = ''; 
 1451: 	    } 
 1452: 	   return $currentstring;
 1453: 	}        
 1454:         sub end_tr {
 1455: 	    my ($target,$token) = @_;
 1456:             my $currentstring = '';
 1457:             if ($target eq 'web') {
 1458: 		$currentstring = $token->[2];     
 1459: 	    } elsif ($target eq 'tex') {
 1460: 		push @{ $Apache::londefdef::table[-1]{'lengthrow'} },$Apache::londefdef::table[-1]{'length'};
 1461: 
 1462: 	    }
 1463: 	   return $currentstring;
 1464: 	}
 1465: #-- <td> tag
 1466:         sub start_td {
 1467: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1468:             my $currentstring = '';
 1469:             if ($target eq 'web') {
 1470:               $currentstring = $token->[4];     
 1471:     } elsif ($target eq 'tex') {
 1472: 		my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval),0,1);
 1473: 		if ($what_to_push eq '') {
 1474: 		    $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
 1475: 		}
 1476: 		    push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
 1477: 		$Apache::londefdef::table[-1]{'counter_columns'}++;
 1478: 		&Apache::lonxml::startredirection();
 1479: ;
 1480: 	    } 
 1481: 	   return $currentstring;
 1482: 	}        
 1483:         sub end_td {
 1484: 	    my ($target,$token) = @_;
 1485:             my $currentstring = '';
 1486:             my $tempolen = '';
 1487:             if ($target eq 'web') {
 1488: 		$currentstring = $token->[2];     
 1489: 	    } elsif ($target eq 'tex') {
 1490: 		my $current_row = $Apache::londefdef::table[-1]{'row_number'};
 1491: 		my $data=&Apache::lonxml::endredirection();
 1492: 		if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt))/) {                 
 1493:                     $Apache::londefdef::table[-1]{'length'} .= $1.',';
 1494: 		    $tempolen = $1;         
 1495: 		} else {
 1496: 		    if (length($data)<5) {
 1497: 			$Apache::londefdef::table[-1]{'length'} .= '0 mm,';
 1498: 			$tempolen = '5 mm';
 1499: 		    } else {
 1500: 			$Apache::londefdef::table[-1]{'length'} .= '0 mm,';
 1501: 			$tempolen = 'TOBECHANGEDONNUMBER';
 1502: 		    }
 1503:                 }                                        
 1504: 		@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{'.$tempolen.'}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
 1505: 	    }
 1506: 	   return $currentstring;
 1507: 	}
 1508: #-- <th> tag
 1509:         sub start_th {
 1510: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1511:             my $currentstring = '';
 1512:             if ($target eq 'web') {
 1513:               $currentstring = $token->[4];     
 1514: 	    } elsif ($target eq 'tex') {
 1515: 		my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval),0,1);
 1516: 		if ($what_to_push eq '') {
 1517: 		    $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
 1518: 		}
 1519: 		    push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
 1520: 		$Apache::londefdef::table[-1]{'counter_columns'}++;
 1521: 		&Apache::lonxml::startredirection();
 1522: ;
 1523: 	    } 
 1524: 	   return $currentstring;
 1525: 	}        
 1526:         sub end_th {
 1527: 	    my ($target,$token) = @_;
 1528:             my $currentstring = '';
 1529:             if ($target eq 'web') {
 1530: 		$currentstring = $token->[2];     
 1531: 	    } elsif ($target eq 'tex') {
 1532: 		my $current_row = $Apache::londefdef::table[-1]{'row_number'};
 1533: 		my $data=&Apache::lonxml::endredirection();
 1534: 		if ($data=~m/width\s*=\s*(\d+\.*\d*\s*(mm|cm))/) {                 
 1535:                     $Apache::londefdef::table[-1]{'length'} .= $1.',';             
 1536: 		} else {
 1537: 		    $Apache::londefdef::table[-1]{'length'} .= '0 mm,'; 
 1538:                 }                                                           
 1539: 		@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{'.$1.'}{\textbf{'.$data.'}} '.$Apache::londefdef::table[-1]{'vinc'};
 1540: 	    }
 1541: 	   return $currentstring;
 1542: 	}
 1543: #-- <img> tag
 1544:         sub start_img {
 1545: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1546: 	    my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
 1547: 						 undef,1);
 1548:             $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
 1549:             my $currentstring = '';
 1550: 	    my $width_param = '';
 1551: 	    my $height_param = '';
 1552: 	    my $scaling = .3;
 1553: 
 1554: 	    if ($target eq 'web') {
 1555:               $currentstring = $token->[4];
 1556: 	    } elsif ($target eq 'tex') {
 1557: 	      &image_replication($src);
 1558: 	      $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
 1559:               #if original gif/jpg file exist do following:
 1560:               if (-e $src) {          
 1561:                   #defines the default size of image
 1562: 		  my $image = Image::Magick->new;
 1563: 		  my $current_figure = $image->Read($src);
 1564: 		  $width_param = $image->Get('width') * $scaling;;
 1565: 		  $height_param = $image->Get('height') * $scaling;;
 1566: 		  undef $image;
 1567: 		  #do we have any specified size of the picture?
 1568: 		  my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval); 
 1569: 		  my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval); 
 1570: 		  my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval);
 1571: 		  if ($TeXwidth ne '') {  
 1572: 		      if ($TeXwidth=~/(\d+)\s*\%/) {
 1573: 			  $width_param = $1*$ENV{'form.textwidth'}/100;
 1574: 		      } else { 
 1575: 			  $width_param = $TeXwidth;
 1576: 		      }
 1577: 		  } elsif ($TeXheight ne '') {
 1578: 			  $width_param = $TeXheight/$height_param*$width_param;
 1579: 		  } elsif ($width ne '') {
 1580: 		      $width_param = $width*$scaling;      
 1581: 		  }
 1582: 		  my $file;
 1583: 		  my $path;	
 1584: 		  if ($src =~ m!(.*)/([^/]*)$!) {
 1585: 		      $file = $2; 
 1586: 		      $path = $1.'/'; 
 1587: 		  } 
 1588: 		  my $newsrc = $src;
 1589: 		  $newsrc =~ s/(\.gif|\.jpg)$/\.eps/i;
 1590: 		  $file=~s/(\.gif|\.jpg)$/\.eps/i;
 1591: 		  #where can we find the picture?
 1592: 		  if (-e $newsrc) {
 1593:                       #eps counterpart for image exist 
 1594: 		      if ($path) {
 1595: 			  $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\fbox{\includegraphics[width='.$width_param.' mm]{'.$file.'}} ';
 1596: 		      }
 1597: 		  } else {
 1598:                       #there is no eps counterpart for image - check for ps one
 1599: 		      $newsrc =~ s/\.eps$/\.ps/;
 1600: 		      if (-e $newsrc) {
 1601: 			  #ps counterpart for image exist 
 1602: 			  $file =~ s/\.eps$/\.ps/;
 1603: 			  if ($path) {
 1604: 			      $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\fbox{\includegraphics[width='.$width_param.' mm]{'.$file.'}} ';
 1605: 			  }
 1606: 		      } else {
 1607: 			  #there aren't eps or ps - so create eps 
 1608: 			  my $temp_file;
 1609: 			  my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
 1610: 			  $temp_file = Apache::File->new('>>'.$filename); 
 1611: 			  print $temp_file "$src\n";
 1612: 			  $currentstring .= '\vskip 1 mm \graphicspath{{/home/httpd/prtspool/}}\fbox{\includegraphics[width='.$width_param.' mm]{'.$file.'}} ';
 1613: 		      }
 1614: 		  }
 1615: 	      } else {
 1616: 		  #original image file doesn't exist so check the alt attribute
 1617: 		  my $alt = &Apache::lonxml::get_param('alt',$parstack,$safeeval);
 1618:                   if ($alt) {
 1619: 		      $currentstring .= ' '.$alt.' ';
 1620: 		  } else {
 1621:                      #<allow> tag will care about replication 
 1622: 		  }
 1623: 	      }
 1624: 	    }
 1625: 	    return $currentstring;
 1626: 	}
 1627:         sub end_img {
 1628: 	    my ($target,$token) = @_;
 1629:             my $currentstring = '';
 1630:             if ($target eq 'web') {
 1631:               $currentstring = $token->[2];
 1632: 	    } elsif ($target eq 'tex') {
 1633:               $currentstring = '';
 1634: 	    }
 1635: 	   return $currentstring;
 1636: 	}
 1637: #-- <applet> tag
 1638: 
 1639:         sub start_applet {
 1640: 	    my ($target,$token) = @_;
 1641:               $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=   
 1642:                                         $token->[2]->{'code'};
 1643:               $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
 1644:                                         $token->[2]->{'archive'};
 1645:             my $currentstring = '';
 1646:             if ($target eq 'web') {
 1647:               $currentstring = $token->[4];
 1648: 	    } elsif ($target eq 'tex') {
 1649:               $currentstring = " \\begin{figure} ";
 1650: 	    } 
 1651: 	   return $currentstring;
 1652: 	}
 1653: sub end_applet {
 1654:     my ($target,$token) = @_;
 1655:     my $currentstring = '';
 1656:     if ($target eq 'web') {
 1657: 	$currentstring = $token->[2];
 1658:     } elsif ($target eq 'tex') {
 1659: 	$currentstring = " \\end{figure}";
 1660:     } 
 1661:     return $currentstring;
 1662: }
 1663: 
 1664: #-- <embed> tag
 1665: 
 1666: sub start_embed {    
 1667:     my ($target,$token) = @_;
 1668:     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
 1669: 	$token->[2]->{'src'};
 1670:     my $currentstring = '';
 1671:     if ($target eq 'web') {
 1672: 	$currentstring = $token->[4];
 1673:     } elsif ($target eq 'tex') {
 1674: 	$currentstring = " \\begin{figure} ";  
 1675:     } 
 1676:     return $currentstring;
 1677: }
 1678:         sub end_embed {
 1679: 	    my ($target,$token) = @_;
 1680:             my $currentstring = '';
 1681:             if ($target eq 'web') {
 1682:               $currentstring = $token->[2];     
 1683: 	    } elsif ($target eq 'tex') {
 1684:               $currentstring = " \\end{figure}";  
 1685: 	    } 
 1686: 	   return $currentstring;
 1687: 	}
 1688: 
 1689: #-- <param> tag
 1690: 
 1691:         sub start_param {
 1692: 	    my ($target,$token) = @_;
 1693: 	    if ($token->[2]->{'name'} eq 'cabbase') {
 1694:                       $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
 1695: 					     $token->[2]->{'value'};
 1696:             }   
 1697:             $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=   
 1698:                                         $token->[2]->{'src'};
 1699:             my $currentstring = '';
 1700:             if ($target eq 'web') {
 1701:               $currentstring = $token->[4];     
 1702: 	    } elsif ($target eq 'tex') {
 1703:               $currentstring = " \\begin{figure} ";  
 1704: 	    } 
 1705: 	   return $currentstring;
 1706: 	}
 1707:         sub end_param {
 1708: 	    my ($target,$token) = @_;
 1709:             my $currentstring = '';
 1710:             if ($target eq 'web') {
 1711:               $currentstring = $token->[2];     
 1712: 	    } elsif ($target eq 'tex') {
 1713:               $currentstring = " \\end{figure}";  
 1714: 	    } 
 1715: 	   return $currentstring;
 1716: 	}
 1717: #-- <allow> tag
 1718: sub start_allow {
 1719:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1720:     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
 1721: 	$token->[2]->{'src'};
 1722:     my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval);
 1723:     &image_replication($src);
 1724:     my $result;
 1725:     if ($target eq 'edit') {
 1726: 	$result .=&Apache::edit::tag_start($target,$token);
 1727: 	$result .=&Apache::edit::text_arg('File Spec:','src',$token,70);
 1728: 	$result .=&Apache::edit::end_row();#.&Apache::edit::start_spanning_row();
 1729:     } elsif ($target eq 'modified') {
 1730: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
 1731: 						     $safeeval,'src');
 1732: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
 1733:     }
 1734:     return $result;
 1735: }
 1736: 
 1737: sub end_allow {
 1738:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1739:     if ( $target eq 'edit') { return (&Apache::edit::end_table()); }
 1740:     return '';
 1741: }
 1742: #-- Frames
 1743: 	sub start_frameset {
 1744: 	  my ($target,$token) = @_;
 1745: 	  my $currentstring = '';
 1746: 	  if ($target eq 'web') { 
 1747: 	    if (!$Apache::lonxml::registered) {
 1748: 	      $currentstring.='<head>'.
 1749: 		  &Apache::lonxml::registerurl(undef,$target).'</head>';
 1750: 	    }
 1751: 	    $currentstring .= $token->[4];
 1752: 	  }
 1753: 	  return $currentstring;
 1754: 	}
 1755:         sub end_frameset {
 1756: 	  my ($target,$token) = @_;
 1757: 	  my $currentstring = '';
 1758: 	  if ($target eq 'web') {
 1759: 	    $currentstring = $token->[2];
 1760: 	  }
 1761: 	  return $currentstring;
 1762: 	}
 1763: #-- <pre>
 1764: 	sub start_pre {
 1765: 	    my ($target,$token) = @_;
 1766:             my $currentstring = '';
 1767:             if ($target eq 'web') {
 1768: 	       $currentstring .= $token->[4];
 1769: 	    } elsif ($target eq 'tex') {
 1770: 		$currentstring .= '\begin{verbatim}';
 1771: 	    } 
 1772:            return $currentstring;
 1773: 	}
 1774:         sub end_pre {
 1775: 	    my ($target,$token) = @_;
 1776:             my $currentstring = '';
 1777:             if ($target eq 'web') {
 1778: 	       $currentstring .= $token->[2];
 1779: 	    } elsif ($target eq 'tex') {
 1780: 		$currentstring .= '\end{verbatim}';
 1781: 	    }
 1782:            return $currentstring;
 1783: 	}
 1784: #-- <insert>
 1785: 	sub start_insert {
 1786: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1787:             my $currentstring = '';
 1788:             if ($target eq 'web') {
 1789: 		my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval);
 1790: 	       $currentstring .= '<b>'.$display.'</b>';;
 1791: 	    }
 1792:            return $currentstring;
 1793: 	}
 1794:         sub end_insert {
 1795: 	    my ($target,$token) = @_;
 1796:             my $currentstring = '';
 1797:             if ($target eq 'web') {
 1798: 	       $currentstring .= '';
 1799: 	    }
 1800:            return $currentstring;
 1801: 	}
 1802: #-- <externallink>
 1803: 	sub start_externallink {
 1804: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1805:             my $currentstring = '';
 1806:             if ($target eq 'web') {
 1807: 		my $display = &Apache::lonxml::get_param('display',$parstack,$safeeval);
 1808: 	       $currentstring .= '<b>'.$display.'</b>';;
 1809: 	    }
 1810:            return $currentstring;
 1811: 	}
 1812:         sub end_externallink {
 1813: 	    my ($target,$token) = @_;
 1814:             my $currentstring = '';
 1815:             if ($target eq 'web') {
 1816: 	       $currentstring .= '';
 1817: 	    }
 1818:            return $currentstring;
 1819: 	}
 1820: #-- <blankspace heigth="">
 1821:         sub start_blankspace {
 1822: 	    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
 1823:             my $currentstring = '';
 1824:             if ($target eq 'tex') {
 1825: 		my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval);
 1826: 		$currentstring .= '\vskip '.$howmuch.' ';
 1827: 	    }
 1828:            return $currentstring;
 1829: 	}
 1830:         sub end_blankspace {
 1831: 	    my ($target,$token) = @_;
 1832:             my $currentstring = '';
 1833:             if ($target eq 'tex') {
 1834: 	       $currentstring .= '';
 1835: 	    }
 1836:            return $currentstring;
 1837: 	}
 1838: #-- <abbr> tag
 1839:       sub start_abbr {
 1840: 	    my ($target,$token) = @_;
 1841:             my $currentstring = '';
 1842:             if ($target eq 'web') {
 1843:               $currentstring = $token->[4];     
 1844: 	    } 
 1845: 	   return $currentstring;
 1846: 	}
 1847:         sub end_abbr {
 1848: 	    my ($target,$token) = @_;
 1849:             my $currentstring = '';
 1850:             if ($target eq 'web') {
 1851:               $currentstring = $token->[2];    
 1852:             } 
 1853: 	   return $currentstring;
 1854: 	}
 1855: #-- <acronym> tag
 1856:       sub start_acronym {
 1857: 	    my ($target,$token) = @_;
 1858:             my $currentstring = '';
 1859:             if ($target eq 'web') {
 1860:               $currentstring = $token->[4];     
 1861: 	    } 
 1862: 	   return $currentstring;
 1863: 	}
 1864:         sub end_acronym {
 1865: 	    my ($target,$token) = @_;
 1866:             my $currentstring = '';
 1867:             if ($target eq 'web') {
 1868:               $currentstring = $token->[2];    
 1869:             } 
 1870: 	   return $currentstring;
 1871: 	}
 1872: #-- <area> tag
 1873:       sub start_area {
 1874: 	    my ($target,$token) = @_;
 1875:             my $currentstring = '';
 1876:             if ($target eq 'web') {
 1877:               $currentstring = $token->[4];     
 1878: 	    } 
 1879: 	   return $currentstring;
 1880: 	}
 1881:         sub end_area {
 1882: 	    my ($target,$token) = @_;
 1883:             my $currentstring = '';
 1884:             if ($target eq 'web') {
 1885:               $currentstring = $token->[2];    
 1886:             } 
 1887: 	   return $currentstring;
 1888: 	}
 1889: #-- <base> tag
 1890:       sub start_base {
 1891: 	    my ($target,$token) = @_;
 1892:             my $currentstring = '';
 1893:             if ($target eq 'web') {
 1894:               $currentstring = $token->[4];     
 1895: 	    } 
 1896: 	   return $currentstring;
 1897: 	}
 1898:         sub end_base {
 1899: 	    my ($target,$token) = @_;
 1900:             my $currentstring = '';
 1901:             if ($target eq 'web') {
 1902:               $currentstring = $token->[2];    
 1903:             } 
 1904: 	   return $currentstring;
 1905: 	}
 1906: #-- <bdo> tag
 1907:       sub start_bdo {
 1908: 	    my ($target,$token) = @_;
 1909:             my $currentstring = '';
 1910:             if ($target eq 'web') {
 1911:               $currentstring = $token->[4];     
 1912: 	    } 
 1913: 	   return $currentstring;
 1914: 	}
 1915:         sub end_bdo {
 1916: 	    my ($target,$token) = @_;
 1917:             my $currentstring = '';
 1918:             if ($target eq 'web') {
 1919:               $currentstring = $token->[2];    
 1920:             } 
 1921: 	   return $currentstring;
 1922: 	}
 1923: #-- <bgsound> tag
 1924:       sub start_bgsound {
 1925: 	    my ($target,$token) = @_;
 1926:             my $currentstring = '';
 1927:             if ($target eq 'web') {
 1928:               $currentstring = $token->[4];     
 1929: 	    } 
 1930: 	   return $currentstring;
 1931: 	}
 1932:         sub end_bgsound {
 1933: 	    my ($target,$token) = @_;
 1934:             my $currentstring = '';
 1935:             if ($target eq 'web') {
 1936:               $currentstring = $token->[2];    
 1937:             } 
 1938: 	   return $currentstring;
 1939: 	}
 1940: #-- <blink> tag
 1941:       sub start_blink {
 1942: 	    my ($target,$token) = @_;
 1943:             my $currentstring = '';
 1944:             if ($target eq 'web') {
 1945:               $currentstring = $token->[4];     
 1946: 	    } 
 1947: 	   return $currentstring;
 1948: 	}
 1949:         sub end_blink {
 1950: 	    my ($target,$token) = @_;
 1951:             my $currentstring = '';
 1952:             if ($target eq 'web') {
 1953:               $currentstring = $token->[2];    
 1954:             } 
 1955: 	   return $currentstring;
 1956: 	}
 1957: #-- <blockquote> tag
 1958:       sub start_blockquote {
 1959: 	    my ($target,$token) = @_;
 1960:             my $currentstring = '';
 1961:             if ($target eq 'web') {
 1962:               $currentstring = $token->[4];     
 1963: 	    } 
 1964: 	   return $currentstring;
 1965: 	}
 1966:         sub end_blockquote {
 1967: 	    my ($target,$token) = @_;
 1968:             my $currentstring = '';
 1969:             if ($target eq 'web') {
 1970:               $currentstring = $token->[2];    
 1971:             } 
 1972: 	   return $currentstring;
 1973: 	}
 1974: #-- <button> tag
 1975:       sub start_button {
 1976: 	    my ($target,$token) = @_;
 1977:             my $currentstring = '';
 1978:             if ($target eq 'web') {
 1979:               $currentstring = $token->[4];     
 1980: 	    } 
 1981: 	   return $currentstring;
 1982: 	}
 1983:         sub end_button {
 1984: 	    my ($target,$token) = @_;
 1985:             my $currentstring = '';
 1986:             if ($target eq 'web') {
 1987:               $currentstring = $token->[2];    
 1988:             } 
 1989: 	   return $currentstring;
 1990: 	}
 1991: #-- <caption> tag
 1992:       sub start_caption {
 1993: 	    my ($target,$token) = @_;
 1994:             my $currentstring = '';
 1995:             if ($target eq 'web') {
 1996:               $currentstring = $token->[4];     
 1997: 	    } 
 1998: 	   return $currentstring;
 1999: 	}
 2000:         sub end_caption {
 2001: 	    my ($target,$token) = @_;
 2002:             my $currentstring = '';
 2003:             if ($target eq 'web') {
 2004:               $currentstring = $token->[2];    
 2005:             } 
 2006: 	   return $currentstring;
 2007: 	}
 2008: #-- <col> tag
 2009:       sub start_col {
 2010: 	    my ($target,$token) = @_;
 2011:             my $currentstring = '';
 2012:             if ($target eq 'web') {
 2013:               $currentstring = $token->[4];     
 2014: 	    } 
 2015: 	   return $currentstring;
 2016: 	}
 2017:         sub end_col {
 2018: 	    my ($target,$token) = @_;
 2019:             my $currentstring = '';
 2020:             if ($target eq 'web') {
 2021:               $currentstring = $token->[2];    
 2022:             } 
 2023: 	   return $currentstring;
 2024: 	}
 2025: #-- <colgroup> tag
 2026:       sub start_colgroup {
 2027: 	    my ($target,$token) = @_;
 2028:             my $currentstring = '';
 2029:             if ($target eq 'web') {
 2030:               $currentstring = $token->[4];     
 2031: 	    } 
 2032: 	   return $currentstring;
 2033: 	}
 2034:         sub end_colgroup {
 2035: 	    my ($target,$token) = @_;
 2036:             my $currentstring = '';
 2037:             if ($target eq 'web') {
 2038:               $currentstring = $token->[2];    
 2039:             } 
 2040: 	   return $currentstring;
 2041: 	}
 2042: #-- <del> tag
 2043:       sub start_del {
 2044: 	    my ($target,$token) = @_;
 2045:             my $currentstring = '';
 2046:             if ($target eq 'web') {
 2047:               $currentstring = $token->[4];     
 2048: 	    } 
 2049: 	   return $currentstring;
 2050: 	}
 2051:         sub end_del {
 2052: 	    my ($target,$token) = @_;
 2053:             my $currentstring = '';
 2054:             if ($target eq 'web') {
 2055:               $currentstring = $token->[2];    
 2056:             } 
 2057: 	   return $currentstring;
 2058: 	}
 2059: #-- <fieldset> tag
 2060:       sub start_fieldset {
 2061: 	    my ($target,$token) = @_;
 2062:             my $currentstring = '';
 2063:             if ($target eq 'web') {
 2064:               $currentstring = $token->[4];     
 2065: 	    } 
 2066: 	   return $currentstring;
 2067: 	}
 2068:         sub end_fieldset {
 2069: 	    my ($target,$token) = @_;
 2070:             my $currentstring = '';
 2071:             if ($target eq 'web') {
 2072:               $currentstring = $token->[2];    
 2073:             } 
 2074: 	   return $currentstring;
 2075: 	}
 2076: #-- <frame> tag
 2077:       sub start_frame {
 2078: 	    my ($target,$token) = @_;
 2079:             my $currentstring = '';
 2080:             if ($target eq 'web') {
 2081:               $currentstring = $token->[4];     
 2082: 	    } 
 2083: 	   return $currentstring;
 2084: 	}
 2085:         sub end_frame {
 2086: 	    my ($target,$token) = @_;
 2087:             my $currentstring = '';
 2088:             if ($target eq 'web') {
 2089:               $currentstring = $token->[2];    
 2090:             } 
 2091: 	   return $currentstring;
 2092: 	}
 2093: #-- <iframe> tag
 2094:       sub start_iframe {
 2095: 	    my ($target,$token) = @_;
 2096:             my $currentstring = '';
 2097:             if ($target eq 'web') {
 2098:               $currentstring = $token->[4];     
 2099: 	    } 
 2100: 	   return $currentstring;
 2101: 	}
 2102:         sub end_iframe {
 2103: 	    my ($target,$token) = @_;
 2104:             my $currentstring = '';
 2105:             if ($target eq 'web') {
 2106:               $currentstring = $token->[2];    
 2107:             } 
 2108: 	   return $currentstring;
 2109: 	}
 2110: #-- <ins> tag
 2111:       sub start_ins {
 2112: 	    my ($target,$token) = @_;
 2113:             my $currentstring = '';
 2114:             if ($target eq 'web') {
 2115:               $currentstring = $token->[4];     
 2116: 	    } 
 2117: 	   return $currentstring;
 2118: 	}
 2119:         sub end_ins {
 2120: 	    my ($target,$token) = @_;
 2121:             my $currentstring = '';
 2122:             if ($target eq 'web') {
 2123:               $currentstring = $token->[2];    
 2124:             } 
 2125: 	   return $currentstring;
 2126: 	}
 2127: #-- <isindex> tag
 2128:       sub start_isindex {
 2129: 	    my ($target,$token) = @_;
 2130:             my $currentstring = '';
 2131:             if ($target eq 'web') {
 2132:               $currentstring = $token->[4];     
 2133: 	    } 
 2134: 	   return $currentstring;
 2135: 	}
 2136:         sub end_isindex {
 2137: 	    my ($target,$token) = @_;
 2138:             my $currentstring = '';
 2139:             if ($target eq 'web') {
 2140:               $currentstring = $token->[2];    
 2141:             } 
 2142: 	   return $currentstring;
 2143: 	}
 2144: #-- <keygen> tag
 2145:       sub start_keygen {
 2146: 	    my ($target,$token) = @_;
 2147:             my $currentstring = '';
 2148:             if ($target eq 'web') {
 2149:               $currentstring = $token->[4];     
 2150: 	    } 
 2151: 	   return $currentstring;
 2152: 	}
 2153:         sub end_keygen {
 2154: 	    my ($target,$token) = @_;
 2155:             my $currentstring = '';
 2156:             if ($target eq 'web') {
 2157:               $currentstring = $token->[2];    
 2158:             } 
 2159: 	   return $currentstring;
 2160: 	}
 2161: #-- <label> tag
 2162:       sub start_label {
 2163: 	    my ($target,$token) = @_;
 2164:             my $currentstring = '';
 2165:             if ($target eq 'web') {
 2166:               $currentstring = $token->[4];     
 2167: 	    } 
 2168: 	   return $currentstring;
 2169: 	}
 2170:         sub end_label {
 2171: 	    my ($target,$token) = @_;
 2172:             my $currentstring = '';
 2173:             if ($target eq 'web') {
 2174:               $currentstring = $token->[2];    
 2175:             } 
 2176: 	   return $currentstring;
 2177: 	}
 2178: #-- <layer> tag
 2179:       sub start_layer {
 2180: 	    my ($target,$token) = @_;
 2181:             my $currentstring = '';
 2182:             if ($target eq 'web') {
 2183:               $currentstring = $token->[4];     
 2184: 	    } 
 2185: 	   return $currentstring;
 2186: 	}
 2187:         sub end_layer {
 2188: 	    my ($target,$token) = @_;
 2189:             my $currentstring = '';
 2190:             if ($target eq 'web') {
 2191:               $currentstring = $token->[2];    
 2192:             } 
 2193: 	   return $currentstring;
 2194: 	}
 2195: #-- <legend> tag
 2196:       sub start_legend {
 2197: 	    my ($target,$token) = @_;
 2198:             my $currentstring = '';
 2199:             if ($target eq 'web') {
 2200:               $currentstring = $token->[4];     
 2201: 	    } 
 2202: 	   return $currentstring;
 2203: 	}
 2204:         sub end_legend {
 2205: 	    my ($target,$token) = @_;
 2206:             my $currentstring = '';
 2207:             if ($target eq 'web') {
 2208:               $currentstring = $token->[2];    
 2209:             } 
 2210: 	   return $currentstring;
 2211: 	}
 2212: #-- <link> tag
 2213:       sub start_link {
 2214: 	    my ($target,$token) = @_;
 2215:             my $currentstring = '';
 2216:             if ($target eq 'web') {
 2217:               $currentstring = $token->[4];     
 2218: 	    } 
 2219: 	   return $currentstring;
 2220: 	}
 2221:         sub end_link {
 2222: 	    my ($target,$token) = @_;
 2223:             my $currentstring = '';
 2224:             if ($target eq 'web') {
 2225:               $currentstring = $token->[2];    
 2226:             } 
 2227: 	   return $currentstring;
 2228: 	}
 2229: #-- <marquee> tag
 2230:       sub start_marquee {
 2231: 	    my ($target,$token) = @_;
 2232:             my $currentstring = '';
 2233:             if ($target eq 'web') {
 2234:               $currentstring = $token->[4];     
 2235: 	    } 
 2236: 	   return $currentstring;
 2237: 	}
 2238:         sub end_marquee {
 2239: 	    my ($target,$token) = @_;
 2240:             my $currentstring = '';
 2241:             if ($target eq 'web') {
 2242:               $currentstring = $token->[2];    
 2243:             } 
 2244: 	   return $currentstring;
 2245: 	}
 2246: #-- <malticol> tag
 2247:       sub start_malticol {
 2248: 	    my ($target,$token) = @_;
 2249:             my $currentstring = '';
 2250:             if ($target eq 'web') {
 2251:               $currentstring = $token->[4];     
 2252: 	    } 
 2253: 	   return $currentstring;
 2254: 	}
 2255:         sub end_malticol {
 2256: 	    my ($target,$token) = @_;
 2257:             my $currentstring = '';
 2258:             if ($target eq 'web') {
 2259:               $currentstring = $token->[2];    
 2260:             } 
 2261: 	   return $currentstring;
 2262: 	}
 2263: #-- <nobr> tag
 2264:       sub start_nobr {
 2265: 	    my ($target,$token) = @_;
 2266:             my $currentstring = '';
 2267:             if ($target eq 'web') {
 2268:               $currentstring = $token->[4];     
 2269: 	    } 
 2270: 	   return $currentstring;
 2271: 	}
 2272:         sub end_nobr {
 2273: 	    my ($target,$token) = @_;
 2274:             my $currentstring = '';
 2275:             if ($target eq 'web') {
 2276:               $currentstring = $token->[2];    
 2277:             } 
 2278: 	   return $currentstring;
 2279: 	}
 2280: #-- <noembed> tag
 2281:       sub start_noembed {
 2282: 	    my ($target,$token) = @_;
 2283:             my $currentstring = '';
 2284:             if ($target eq 'web') {
 2285:               $currentstring = $token->[4];     
 2286: 	    } 
 2287: 	   return $currentstring;
 2288: 	}
 2289:         sub end_noembed {
 2290: 	    my ($target,$token) = @_;
 2291:             my $currentstring = '';
 2292:             if ($target eq 'web') {
 2293:               $currentstring = $token->[2];    
 2294:             } 
 2295: 	   return $currentstring;
 2296: 	}
 2297: #-- <noframes> tag
 2298:       sub start_noframes {
 2299: 	    my ($target,$token) = @_;
 2300:             my $currentstring = '';
 2301:             if ($target eq 'web') {
 2302:               $currentstring = $token->[4];     
 2303: 	    } 
 2304: 	   return $currentstring;
 2305: 	}
 2306:         sub end_noframes {
 2307: 	    my ($target,$token) = @_;
 2308:             my $currentstring = '';
 2309:             if ($target eq 'web') {
 2310:               $currentstring = $token->[2];    
 2311:             } 
 2312: 	   return $currentstring;
 2313: 	}
 2314: #-- <nolayer> tag
 2315:       sub start_nolayer {
 2316: 	    my ($target,$token) = @_;
 2317:             my $currentstring = '';
 2318:             if ($target eq 'web') {
 2319:               $currentstring = $token->[4];     
 2320: 	    } 
 2321: 	   return $currentstring;
 2322: 	}
 2323:         sub end_nolayer {
 2324: 	    my ($target,$token) = @_;
 2325:             my $currentstring = '';
 2326:             if ($target eq 'web') {
 2327:               $currentstring = $token->[2];    
 2328:             } 
 2329: 	   return $currentstring;
 2330: 	}
 2331: #-- <noscript> tag
 2332:       sub start_noscript {
 2333: 	    my ($target,$token) = @_;
 2334:             my $currentstring = '';
 2335:             if ($target eq 'web') {
 2336:               $currentstring = $token->[4];     
 2337: 	    } 
 2338: 	   return $currentstring;
 2339: 	}
 2340:         sub end_noscript {
 2341: 	    my ($target,$token) = @_;
 2342:             my $currentstring = '';
 2343:             if ($target eq 'web') {
 2344:               $currentstring = $token->[2];    
 2345:             } 
 2346: 	   return $currentstring;
 2347: 	}
 2348: #-- <object> tag
 2349:       sub start_object {
 2350: 	    my ($target,$token) = @_;
 2351:             my $currentstring = '';
 2352:             if ($target eq 'web') {
 2353:               $currentstring = $token->[4];     
 2354: 	    } 
 2355: 	   return $currentstring;
 2356: 	}
 2357:         sub end_object {
 2358: 	    my ($target,$token) = @_;
 2359:             my $currentstring = '';
 2360:             if ($target eq 'web') {
 2361:               $currentstring = $token->[2];    
 2362:             } 
 2363: 	   return $currentstring;
 2364: 	}
 2365: #-- <optgroup> tag
 2366:       sub start_optgroup {
 2367: 	    my ($target,$token) = @_;
 2368:             my $currentstring = '';
 2369:             if ($target eq 'web') {
 2370:               $currentstring = $token->[4];     
 2371: 	    } 
 2372: 	   return $currentstring;
 2373: 	}
 2374:         sub end_optgroup {
 2375: 	    my ($target,$token) = @_;
 2376:             my $currentstring = '';
 2377:             if ($target eq 'web') {
 2378:               $currentstring = $token->[2];    
 2379:             } 
 2380: 	   return $currentstring;
 2381: 	}
 2382: #-- <samp> tag
 2383:       sub start_samp {
 2384: 	    my ($target,$token) = @_;
 2385:             my $currentstring = '';
 2386:             if ($target eq 'web') {
 2387:               $currentstring = $token->[4];     
 2388: 	    } 
 2389: 	   return $currentstring;
 2390: 	}
 2391:         sub end_samp {
 2392: 	    my ($target,$token) = @_;
 2393:             my $currentstring = '';
 2394:             if ($target eq 'web') {
 2395:               $currentstring = $token->[2];    
 2396:             } 
 2397: 	   return $currentstring;
 2398: 	}
 2399: #-- <server> tag
 2400:       sub start_server {
 2401: 	    my ($target,$token) = @_;
 2402:             my $currentstring = '';
 2403:             if ($target eq 'web') {
 2404:               $currentstring = $token->[4];     
 2405: 	    } 
 2406: 	   return $currentstring;
 2407: 	}
 2408:         sub end_server {
 2409: 	    my ($target,$token) = @_;
 2410:             my $currentstring = '';
 2411:             if ($target eq 'web') {
 2412:               $currentstring = $token->[2];    
 2413:             } 
 2414: 	   return $currentstring;
 2415: 	}
 2416: #-- <spacer> tag
 2417:       sub start_spacer {
 2418: 	    my ($target,$token) = @_;
 2419:             my $currentstring = '';
 2420:             if ($target eq 'web') {
 2421:               $currentstring = $token->[4];     
 2422: 	    } 
 2423: 	   return $currentstring;
 2424: 	}
 2425:         sub end_spacer {
 2426: 	    my ($target,$token) = @_;
 2427:             my $currentstring = '';
 2428:             if ($target eq 'web') {
 2429:               $currentstring = $token->[2];    
 2430:             } 
 2431: 	   return $currentstring;
 2432: 	}
 2433: #-- <span> tag
 2434:       sub start_span {
 2435: 	    my ($target,$token) = @_;
 2436:             my $currentstring = '';
 2437:             if ($target eq 'web') {
 2438:               $currentstring = $token->[4];     
 2439: 	    } 
 2440: 	   return $currentstring;
 2441: 	}
 2442:         sub end_span {
 2443: 	    my ($target,$token) = @_;
 2444:             my $currentstring = '';
 2445:             if ($target eq 'web') {
 2446:               $currentstring = $token->[2];    
 2447:             } 
 2448: 	   return $currentstring;
 2449: 	}
 2450: #-- <tbody> tag
 2451:       sub start_tbody {
 2452: 	    my ($target,$token) = @_;
 2453:             my $currentstring = '';
 2454:             if ($target eq 'web') {
 2455:               $currentstring = $token->[4];     
 2456: 	    } 
 2457: 	   return $currentstring;
 2458: 	}
 2459:         sub end_tbody {
 2460: 	    my ($target,$token) = @_;
 2461:             my $currentstring = '';
 2462:             if ($target eq 'web') {
 2463:               $currentstring = $token->[2];    
 2464:             } 
 2465: 	   return $currentstring;
 2466: 	}
 2467: #-- <tfoot> tag
 2468:       sub start_tfoot {
 2469: 	    my ($target,$token) = @_;
 2470:             my $currentstring = '';
 2471:             if ($target eq 'web') {
 2472:               $currentstring = $token->[4];     
 2473: 	    } 
 2474: 	   return $currentstring;
 2475: 	}
 2476:         sub end_tfoot {
 2477: 	    my ($target,$token) = @_;
 2478:             my $currentstring = '';
 2479:             if ($target eq 'web') {
 2480:               $currentstring = $token->[2];    
 2481:             } 
 2482: 	   return $currentstring;
 2483: 	}
 2484: #-- <thead> tag
 2485:       sub start_thead {
 2486: 	    my ($target,$token) = @_;
 2487:             my $currentstring = '';
 2488:             if ($target eq 'web') {
 2489:               $currentstring = $token->[4];     
 2490: 	    } 
 2491: 	   return $currentstring;
 2492: 	}
 2493:         sub end_thead {
 2494: 	    my ($target,$token) = @_;
 2495:             my $currentstring = '';
 2496:             if ($target eq 'web') {
 2497:               $currentstring = $token->[2];    
 2498:             } 
 2499: 	   return $currentstring;
 2500: 	}
 2501: #-- <var> tag
 2502:       sub start_var {
 2503: 	    my ($target,$token) = @_;
 2504:             my $currentstring = '';
 2505:             if ($target eq 'web') {
 2506:               $currentstring = $token->[4];     
 2507: 	    } 
 2508: 	   return $currentstring;
 2509: 	}
 2510:         sub end_var {
 2511: 	    my ($target,$token) = @_;
 2512:             my $currentstring = '';
 2513:             if ($target eq 'web') {
 2514:               $currentstring = $token->[2];    
 2515:             } 
 2516: 	   return $currentstring;
 2517: 	}
 2518: #-- <wbr> tag
 2519:       sub start_wbr {
 2520: 	    my ($target,$token) = @_;
 2521:             my $currentstring = '';
 2522:             if ($target eq 'web') {
 2523:               $currentstring = $token->[4];     
 2524: 	    } 
 2525: 	   return $currentstring;
 2526: 	}
 2527:         sub end_wbr {
 2528: 	    my ($target,$token) = @_;
 2529:             my $currentstring = '';
 2530:             if ($target eq 'web') {
 2531:               $currentstring = $token->[2];    
 2532:             } 
 2533: 	   return $currentstring;
 2534: 	}
 2535: 
 2536: sub image_replication {
 2537:     my $src = shift;
 2538:     if (not -e '/home/httpd/html'.$src) {
 2539: 	#replicates image itself
 2540: 	&Apache::lonnet::repcopy('/home/httpd/html'.$src);
 2541: 	#replicates eps or ps 
 2542: 	my $newsrc = $src;
 2543: 	$newsrc =~ s/(.gif|.jpg)$/.eps/;
 2544: 	if (not-e $newsrc && &Apache::lonnet::repcopy('/home/httpd/html'.$newsrc) ne 'OK') {
 2545: 	    $newsrc =~ s/\.ps$/\.eps/;
 2546: 	    &Apache::lonnet::repcopy('/home/httpd/html'.$newsrc);
 2547: 	}
 2548:     }
 2549:     return '';
 2550: }
 2551: 
 2552: 1;
 2553: __END__

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>