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Annotation of loncom/xml/lontex.pm, revision 1.14

1.1       harris41    1: # The LearningOnline Network with CAPA
                      2: # TeX Content Handler
                      3: #
1.14    ! raeburn     4: # $Id: lontex.pm,v 1.13 2008/11/24 17:17:52 jms Exp $
1.3       www         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: #
                     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: #
1.1       harris41   40: # 05/29/00,05/30,10/11 Gerd Kortemeyer
                     41: 
                     42: package Apache::lontex;
                     43: 
                     44: use strict;
                     45: use Apache::File;
                     46: use Apache::lontexconvert;
                     47: use Apache::Constants qw(:common);
1.7       albertel   48: use Apache::lonnet;
1.1       harris41   49: use tth;
                     50: 
                     51: # ================================================================ Main Handler
                     52: 
1.9       albertel   53: sub footer {
                     54:     my ($errorstring) = @_;
                     55:     my $xmlstring='';
                     56:     if ($env{'request.state'} eq 'construct') {
                     57: 	$xmlstring.='<address>'.
                     58: 	    $Apache::lontexconvert::errorstring.'</address>';
                     59:     } else {
                     60: 	&Apache::lonmsg::author_res_msg($env{'request.filename'},
                     61: 					$Apache::lonxml::errorstring);
                     62:     }
                     63: # -------------------------------------------------------------------- End Body
1.11      albertel   64:     $xmlstring.=&Apache::loncommon::end_page({'discussion' => 1});
1.9       albertel   65:     return $xmlstring;
                     66: }
                     67: 
1.1       harris41   68: sub handler {
1.9       albertel   69:   my ($r)= @_;
1.1       harris41   70:   my @texcontents;
                     71:   my $texstring;
                     72: 
                     73: # ----------------------------------------------------------- Set document type
                     74: 
1.7       albertel   75:   if ($env{'browser.mathml'}) {
1.6       albertel   76:       &Apache::loncommon::content_type($r,'text/xml');
1.1       harris41   77:   } else {
1.6       albertel   78:       &Apache::loncommon::content_type($r,'text/html');
1.1       harris41   79:   }
                     80:   $r->send_http_header;
                     81: 
                     82:   return OK if $r->header_only;
                     83: 
                     84: # ------------------------------------------------------------------- Read file
                     85: 
                     86:   {
                     87:     my $fh=Apache::File->new($r->filename);
                     88:     @texcontents=<$fh>;
                     89:   }
                     90: 
                     91:   $texstring=join("\n",@texcontents);
                     92: 
                     93: # --------------------------------------------------------------- Render Output
                     94:   
1.9       albertel   95:   &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                     96: 					  ['texengine','inhibitmenu']);
                     97: 
1.8       albertel   98: 
1.9       albertel   99:   $r->print(&Apache::loncommon::start_page(undef,undef,
1.10      albertel  100: 					   {'bgcolor'        => '#FFFFFF',
1.9       albertel  101: 					    'force_register' => 1,
                    102: 					    'only_body'      =>
                    103: 						($env{'form.inhibitmenu'} 
                    104: 						 eq 'yes'), }));
                    105: 
1.14    ! raeburn   106:   my $displaymode;
        !           107:   if (&Apache::lonnet::EXT('resource.0.texdisplay') =~ /^(tth|mathjax)$/i) {
        !           108:       $displaymode = $1;
        !           109:   }
        !           110:   if ($env{'form.texengine'} =~ /^(tth|mathjax)$/i) {
        !           111:       $displaymode = $1;
        !           112:   }
1.9       albertel  113:   $r->print(&Apache::lontexconvert::converted(\$texstring,
1.14    ! raeburn   114: 					      $displaymode));
1.9       albertel  115:   $r->print(&footer());
1.1       harris41  116: 
                    117:   return OK;
                    118: }
                    119: 
                    120: 1;
                    121: __END__
                    122: 
1.13      jms       123: =pod
                    124: 
                    125: =head1 NAME
                    126: 
                    127: Apache::lontex.pm
                    128: 
                    129: =head1 SYNOPSIS
                    130: 
                    131: Handler for tex files (somewhere in modules)
                    132: 
                    133: This is part of the LearningOnline Network with CAPA project
                    134: described at http://www.lon-capa.org.
                    135: 
                    136: 
                    137: =head1 SUBROUTINES
                    138: 
                    139: =over
                    140: 
                    141: =item footer()
                    142: 
                    143: Main Handler
                    144: 
                    145: =back
                    146: 
                    147: =cut
                    148: 
1.1       harris41  149: 
                    150: 
                    151: 
                    152: 
                    153: 
                    154: