# The LearningOnline Network with CAPA # TeX Conversion Module # # $Id: lontexconvert.pm,v 1.7 2002/07/30 12:42:13 www Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ # # Copyright for TtHfunc and TtMfunc by Ian Hutchinson. # TtHfunc and TtMfunc (the "Code") may be compiled and linked into # binary executable programs or libraries distributed by the # Michigan State University (the "Licensee"), but any binaries so # distributed are hereby licensed only for use in the context # of a program or computational system for which the Licensee is the # primary author or distributor, and which performs substantial # additional tasks beyond the translation of (La)TeX into HTML. # The C source of the Code may not be distributed by the Licensee # to any other parties under any circumstances. # # 05/29/00,05/30,10/11,10/20 Gerd Kortemeyer # 05/03/2001 Scott Harrison # 5/4 Gerd Kortemeyer package Apache::lontexconvert; use strict; use tth; use vars qw($errorstring); use Apache::lonmsg; use Apache::lonxml; # ====================================================================== Header sub header { $errorstring=''; my $time=time; if ($ENV{'browser.mathml'}) { &tth::ttminit(); } else { &tth::tthinit(); } return &Apache::lonxml::xmlbegin(). &Apache::lonxml::fontsettings(). "\n\n". &Apache::lonxml::registerurl(undef,'tex'). "\n\n"; } # ================================================================== Conversion sub converted { my $texstring=shift; my $xmlstring; if ($ENV{'browser.mathml'}) { $xmlstring=&tth::ttm($$texstring); $xmlstring=~s/\/\

/g;
      $xmlstring=~s/\ /\ /g;
      $xmlstring=~s/\ /\ \<\/p\>/g;
      $errorstring.=&tth::ttmerror();
  } else {
      $xmlstring=&tth::tth($$texstring);
      $errorstring.=&tth::ttherror();
  }
  return $xmlstring;
}

# ====================================================================== Footer

sub footer {
  my $xmlstring='';
  if ($ENV{'request.state'} eq 'construct') {
      $xmlstring.=''.$errorstring.'';
  } else {
      &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$errorstring);
  }
# -------------------------------------------------------------------- End Body
  $xmlstring.=&Apache::lonxml::xmlend();
  return $xmlstring;
}

# ------------------------------------------------------------ Message display

sub msgtexconverted {
    my $message=shift;
    if ($ENV{'browser.mathml'}) {
      &tth::ttminit();
      &tth::ttmoptions("-L");
    } else {
      &tth::tthinit();
      &tth::tthoptions("-L");
    }
    $message=~s/(\$.+?\$)/&converted(\$1)/ge;
    $message=~s/(\\\[.+?\\\])/&converted(\$1)/ge;
    return $message;
}

1;
__END__

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