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File:  [LON-CAPA] / loncom / xml / lontexconvert.pm
Revision 1.15: download - view: text, annotated - select for diffs
Wed Feb 5 22:50:44 2003 UTC (21 years, 4 months ago) by albertel
Branches: MAIN
CVS tags: branch_0_6, HEAD
- Fixed the FIXME, -L works properly, and need to do proper unicode for browsers

    1: # The LearningOnline Network with CAPA
    2: # TeX Conversion Module
    3: #
    4: # $Id: lontexconvert.pm,v 1.15 2003/02/05 22:50:44 albertel 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: # 5/4 Gerd Kortemeyer
   41: 
   42: package Apache::lontexconvert;
   43: 
   44: use strict;
   45: use tth;
   46: use vars qw($errorstring);
   47: use Apache::lonmsg;
   48: use Apache::lonxml;
   49: 
   50: # ====================================================================== Header
   51: 
   52: sub header {
   53:   $errorstring='';
   54:   my $time=time;
   55:   if ($ENV{'browser.mathml'}) {
   56:       &tth::ttminit();
   57:       if ($ENV{'browser.unicode'}) {
   58: 	  &tth::ttmoptions('-L -u1');
   59:       } else {
   60: 	  &tth::ttmoptions('-L -u0');
   61:       }
   62:   } else {
   63:       &tth::tthinit();
   64:       if ($ENV{'browser.unicode'}) {
   65: 	  &tth::tthoptions('-L -u1');
   66:       } else {
   67: 	  &tth::tthoptions('-L -u0');
   68:       }
   69:   }
   70:   return &Apache::lonxml::xmlbegin().
   71:          &Apache::lonxml::fontsettings().
   72:          "\n<head>\n".
   73:          &Apache::lonxml::registerurl(undef,'tex').
   74: 	 "\n</head>\n";
   75: }
   76: 
   77: # ================================================================== Conversion
   78: 
   79: sub converted {
   80:   my $texstring=shift;
   81:   my $xmlstring='[UNDISPLAYABLE]';
   82:   eval(<<'ENDCONV');
   83:   { 
   84:     local $SIG{SEGV}=sub { die; };
   85:     if ($ENV{'browser.mathml'}) {
   86:       $xmlstring=&tth::ttm($$texstring);
   87:       $xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g;
   88:       $xmlstring=~s/\<br\>/\<br\/\>/g;
   89:       $xmlstring=~s/\<p\>/\<p\>\<\/p\>/g;
   90:       $errorstring.=&tth::ttmerror();
   91:     } else {
   92:       $xmlstring=&tth::tth($$texstring);
   93:       $errorstring.=&tth::ttherror();
   94:     }
   95:   }
   96: ENDCONV
   97:   return $xmlstring;
   98: }
   99: 
  100: # ====================================================================== Footer
  101: 
  102: sub footer {
  103:   my $xmlstring='';
  104:   if ($ENV{'request.state'} eq 'construct') {
  105:       $xmlstring.='<address>'.$errorstring.'</address>';
  106:   } else {
  107:       &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$errorstring);
  108:   }
  109: # -------------------------------------------------------------------- End Body
  110:   $xmlstring.=&Apache::lonxml::xmlend();
  111:   return $xmlstring;
  112: }
  113: 
  114: # ------------------------------------------------------------ Message display
  115: 
  116: sub to_convert {
  117:     my ($string) = @_;
  118:     $string=~s/\<br\s*\/?\>/ /g;
  119:     return &converted(\$string);
  120: }
  121: 
  122: sub msgtexconverted {
  123:     my $message=shift;
  124: 
  125:     if ($ENV{'browser.mathml'}) {
  126: 	&tth::ttminit();
  127: 	if ($ENV{'browser.unicode'}) {
  128: 	    &tth::ttmoptions('-L -u1');
  129: 	} else {
  130: 	    &tth::ttmoptions('-L -u0');
  131: 	}
  132:     } else {
  133: 	&tth::tthinit();
  134: 	if ($ENV{'browser.unicode'}) {
  135: 	    &tth::tthoptions('-L -u1');
  136: 	} else {
  137: 	    &tth::tthoptions('-L -u0');
  138: 	}
  139:     }
  140:     $message=~s/(\$\$.+?\$\$)/&to_convert($1)/ge;
  141:     $message=~s/(\$.+?\$)/&to_convert($1)/ge;
  142:     $message=~s/(\\\(.+?\\\))/&to_convert($1)/ge;
  143:     $message=~s/(\\\[.+?\\\])/&to_convert($1)/ge;
  144:     return $message.$errorstring;
  145: }
  146: 
  147: 1;
  148: __END__
  149: 
  150: 
  151: 
  152: 
  153: 
  154: 
  155:
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