Annotation of loncom/xml/lontexconvert.pm, revision 1.20

1.1       harris41    1: # The LearningOnline Network with CAPA
                      2: # TeX Conversion Module
                      3: #
1.20    ! www         4: # $Id: lontexconvert.pm,v 1.19 2003/02/27 21:01:39 albertel Exp $
1.4       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: # 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: #
1.1       harris41   39: # 05/29/00,05/30,10/11,10/20 Gerd Kortemeyer
1.3       www        40: # 5/4 Gerd Kortemeyer
1.1       harris41   41: 
                     42: package Apache::lontexconvert;
                     43: 
                     44: use strict;
                     45: use tth;
                     46: use vars qw($errorstring);
1.19      albertel   47: use Apache();
1.1       harris41   48: use Apache::lonmsg;
1.3       www        49: use Apache::lonxml;
1.16      www        50: use Apache::lonmenu;
1.1       harris41   51: 
                     52: # ====================================================================== Header
                     53: 
                     54: sub header {
                     55:   $errorstring='';
                     56:   my $time=time;
                     57:   if ($ENV{'browser.mathml'}) {
                     58:       &tth::ttminit();
1.13      albertel   59:       if ($ENV{'browser.unicode'}) {
                     60: 	  &tth::ttmoptions('-L -u1');
                     61:       } else {
                     62: 	  &tth::ttmoptions('-L -u0');
                     63:       }
1.1       harris41   64:   } else {
                     65:       &tth::tthinit();
1.13      albertel   66:       if ($ENV{'browser.unicode'}) {
                     67: 	  &tth::tthoptions('-L -u1');
                     68:       } else {
                     69: 	  &tth::tthoptions('-L -u0');
                     70:       }
1.1       harris41   71:   }
1.3       www        72:   return &Apache::lonxml::xmlbegin().
                     73:          &Apache::lonxml::fontsettings().
                     74:          "\n<head>\n".
1.16      www        75:          &Apache::lonmenu::registerurl(undef,'tex').
1.3       www        76: 	 "\n</head>\n";
1.1       harris41   77: }
                     78: 
                     79: # ================================================================== Conversion
                     80: 
1.19      albertel   81: $Apache::lontexconvert::messedup=0;
1.1       harris41   82: sub converted {
1.12      www        83:   my $texstring=shift;
                     84:   my $xmlstring='[UNDISPLAYABLE]';
1.19      albertel   85:   if ($Apache::lontexconvert::messedup) {
                     86:       return '[Uncoverted Due To Previous Errors]';
                     87:   }
1.12      www        88:   eval(<<'ENDCONV');
1.19      albertel   89:   {
                     90:     local $SIG{SEGV}=sub { $Apache::lontexconvert::messedup=1; die; };
1.1       harris41   91:     if ($ENV{'browser.mathml'}) {
                     92:       $xmlstring=&tth::ttm($$texstring);
                     93:       $xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g;
                     94:       $xmlstring=~s/\<br\>/\<br\/\>/g;
                     95:       $xmlstring=~s/\<p\>/\<p\>\<\/p\>/g;
                     96:       $errorstring.=&tth::ttmerror();
1.12      www        97:     } else {
1.1       harris41   98:       $xmlstring=&tth::tth($$texstring);
                     99:       $errorstring.=&tth::ttherror();
1.12      www       100:     }
1.1       harris41  101:   }
1.12      www       102: ENDCONV
1.19      albertel  103:   if ($Apache::lontexconvert::messedup || &tth::tthmessedup()) {
                    104:       &Apache::lonnet::logthis("Trying to kill myself");
                    105:       $Apache::lontexconvert::messedup=1;
                    106:       my $request=Apache->request();
                    107:       $request->child_terminate();
                    108:   }
1.1       harris41  109:   return $xmlstring;
                    110: }
                    111: 
                    112: # ====================================================================== Footer
                    113: 
                    114: sub footer {
                    115:   my $xmlstring='';
                    116:   if ($ENV{'request.state'} eq 'construct') {
                    117:       $xmlstring.='<address>'.$errorstring.'</address>';
                    118:   } else {
                    119:       &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$errorstring);
                    120:   }
                    121: # -------------------------------------------------------------------- End Body
1.3       www       122:   $xmlstring.=&Apache::lonxml::xmlend();
1.1       harris41  123:   return $xmlstring;
1.6       www       124: }
                    125: 
                    126: # ------------------------------------------------------------ Message display
                    127: 
1.9       albertel  128: sub to_convert {
                    129:     my ($string) = @_;
1.11      www       130:     $string=~s/\<br\s*\/?\>/ /g;
1.18      albertel  131:     $string=&HTML::Entities::decode($string);
1.9       albertel  132:     return &converted(\$string);
                    133: }
                    134: 
1.20    ! www       135: sub smiley {
        !           136:    my $expression=shift;
        !           137:    if ($ENV{'browser.imagesuppress'} eq 'on') { return $expression; }
        !           138:    my %smileys=('\:\-*\)' => 'smiley',
        !           139:                 '8\-*\)'  => 'coolsmile',
        !           140:                 '8\-*I'   => 'coolindiff',
        !           141:                 ':\-*\('  => 'frowny',
        !           142:                 '\:\-*(o|O|\(\))' => 'shocked',
        !           143:                 '\;\-*\)' => 'wink',
        !           144:                 '\:\-*P'  => 'baeh',
        !           145:                 '\:\-*(\\\|\\/)' => 'hrrm',
        !           146:                 '\:\-*D'  => 'bigsmile',
        !           147:                 '\:\-*C'  => 'angry',
        !           148:                 '\:(\'|\`)\-*\(' => 'cry',
        !           149:                 '\:\-*(X|\#)' => 'lipsrsealed',
        !           150:                 '\:\-*S' => 'huh');
        !           151:    my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
        !           152:    foreach (keys %smileys) {
        !           153:       $expression=~s/$_/\<img src="$iconpath\/$smileys{$_}.gif" \/\>/gs; 
        !           154:    }
        !           155:    return $expression;
        !           156: }
        !           157: 
1.6       www       158: sub msgtexconverted {
                    159:     my $message=shift;
1.9       albertel  160: 
1.17      albertel  161:     $errorstring='';
1.6       www       162:     if ($ENV{'browser.mathml'}) {
1.15      albertel  163: 	&tth::ttminit();
                    164: 	if ($ENV{'browser.unicode'}) {
                    165: 	    &tth::ttmoptions('-L -u1');
                    166: 	} else {
                    167: 	    &tth::ttmoptions('-L -u0');
                    168: 	}
1.6       www       169:     } else {
1.15      albertel  170: 	&tth::tthinit();
                    171: 	if ($ENV{'browser.unicode'}) {
                    172: 	    &tth::tthoptions('-L -u1');
                    173: 	} else {
                    174: 	    &tth::tthoptions('-L -u0');
                    175: 	}
1.6       www       176:     }
1.15      albertel  177:     $message=~s/(\$\$.+?\$\$)/&to_convert($1)/ge;
                    178:     $message=~s/(\$.+?\$)/&to_convert($1)/ge;
                    179:     $message=~s/(\\\(.+?\\\))/&to_convert($1)/ge;
                    180:     $message=~s/(\\\[.+?\\\])/&to_convert($1)/ge;
1.20    ! www       181:     return &smiley($message).$errorstring;
1.1       harris41  182: }
                    183: 
                    184: 1;
                    185: __END__
                    186: 
                    187: 
                    188: 
                    189: 
                    190: 
                    191: 
                    192: 

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