[BACK]Return to lontexconvert.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / xml
File:  [LON-CAPA] / loncom / xml / lontexconvert.pm
Revision 1.10: download - view: text, annotated - select for diffs
Fri Oct 25 13:37:00 2002 UTC (21 years, 6 months ago) by www
Branches: MAIN
CVS tags: HEAD
Bug #872

    1: # The LearningOnline Network with CAPA
    2: # TeX Conversion Module
    3: #
    4: # $Id: lontexconvert.pm,v 1.10 2002/10/25 13:37:00 www Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson. 
   29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into 
   30: # binary executable programs or libraries distributed by the 
   31: # Michigan State University (the "Licensee"), but any binaries so 
   32: # distributed are hereby licensed only for use in the context
   33: # of a program or computational system for which the Licensee is the 
   34: # primary author or distributor, and which performs substantial 
   35: # additional tasks beyond the translation of (La)TeX into HTML.
   36: # The C source of the Code may not be distributed by the Licensee
   37: # to any other parties under any circumstances.
   38: #
   39: # 05/29/00,05/30,10/11,10/20 Gerd Kortemeyer
   40: # 05/03/2001 Scott Harrison
   41: # 5/4 Gerd Kortemeyer
   42: 
   43: package Apache::lontexconvert;
   44: 
   45: use strict;
   46: use tth;
   47: use vars qw($errorstring);
   48: use Apache::lonmsg;
   49: use Apache::lonxml;
   50: 
   51: # ====================================================================== Header
   52: 
   53: sub header {
   54:   $errorstring='';
   55:   my $time=time;
   56:   if ($ENV{'browser.mathml'}) {
   57:       &tth::ttminit();
   58:   } else {
   59:       &tth::tthinit();
   60:   }
   61:   return &Apache::lonxml::xmlbegin().
   62:          &Apache::lonxml::fontsettings().
   63:          "\n<head>\n".
   64:          &Apache::lonxml::registerurl(undef,'tex').
   65: 	 "\n</head>\n";
   66: }
   67: 
   68: # ================================================================== Conversion
   69: 
   70: sub converted {
   71:     my $texstring=shift;
   72:     my $xmlstring;
   73:     if ($ENV{'browser.mathml'}) {
   74:       $xmlstring=&tth::ttm($$texstring);
   75:       $xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g;
   76:       $xmlstring=~s/\<br\>/\<br\/\>/g;
   77:       $xmlstring=~s/\<p\>/\<p\>\<\/p\>/g;
   78:       $errorstring.=&tth::ttmerror();
   79:   } else {
   80:       $xmlstring=&tth::tth($$texstring);
   81:       $errorstring.=&tth::ttherror();
   82:   }
   83:   return $xmlstring;
   84: }
   85: 
   86: # ====================================================================== Footer
   87: 
   88: sub footer {
   89:   my $xmlstring='';
   90:   if ($ENV{'request.state'} eq 'construct') {
   91:       $xmlstring.='<address>'.$errorstring.'</address>';
   92:   } else {
   93:       &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$errorstring);
   94:   }
   95: # -------------------------------------------------------------------- End Body
   96:   $xmlstring.=&Apache::lonxml::xmlend();
   97:   return $xmlstring;
   98: }
   99: 
  100: # ------------------------------------------------------------ Message display
  101: 
  102: sub to_convert {
  103:     my ($string) = @_;
  104:     $string=~s/\<br\s*\/*\>//g;
  105:     return &converted(\$string);
  106: }
  107: 
  108: sub msgtexconverted {
  109:     my $message=shift;
  110: 
  111:     #FIXME this crap needs to go but right now the -L option might be
  112:     #ignored if this isn;t the first time the tth engine is used
  113:     #thus the \\document class crap, it makes sure we init the LaTeX stuff
  114:     if ($ENV{'browser.mathml'}) {
  115:       &tth::ttminit();
  116:       &tth::ttmoptions("-L");
  117:     } else {
  118:       &tth::tthinit();
  119:       &tth::tthoptions("-L");
  120:     }
  121:     $message=~s/(\$\$.+?\$\$)/&to_convert("\\documentclass{article}".$1)/ge;
  122:     $message=~s/(\$.+?\$)/&to_convert("\\documentclass{article}".$1)/ge;
  123:     $message=~s/(\\\(.+?\\\))/&to_convert("\\documentclass{article}".$1)/ge;
  124:     $message=~s/(\\\[.+?\\\])/&to_convert("\\documentclass{article}".$1)/ge;
  125:     return $message.$errorstring;
  126: }
  127: 
  128: 1;
  129: __END__
  130: 
  131: 
  132: 
  133: 
  134: 
  135: 
  136:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>