--- loncom/xml/lontexconvert.pm 2001/11/29 19:03:58 1.4 +++ loncom/xml/lontexconvert.pm 2004/01/28 20:48:35 1.30 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # TeX Conversion Module # -# $Id: lontexconvert.pm,v 1.4 2001/11/29 19:03:58 www Exp $ +# $Id: lontexconvert.pm,v 1.30 2004/01/28 20:48:35 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -37,7 +37,6 @@ # 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; @@ -45,40 +44,75 @@ package Apache::lontexconvert; use strict; use tth; use vars qw($errorstring); +use Apache(); use Apache::lonmsg; use Apache::lonxml; +use Apache::lonmenu; # ====================================================================== Header +sub init_tth { + my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'}; + if ($ENV{'browser.mathml'}) { + &tth::ttminit(); + if ($ENV{'browser.unicode'}) { + &tth::ttmoptions('-L -u1 '.$options); + } else { + &tth::ttmoptions('-L -u0 '.$options); + } + } else { + &tth::tthinit(); + if ($ENV{'browser.unicode'}) { + &tth::tthoptions('-L -u1 '.$options); + } else { + &tth::tthoptions('-L -u0 '.$options); + } + } +} + sub header { $errorstring=''; my $time=time; - if ($ENV{'browser.mathml'}) { - &tth::ttminit(); - } else { - &tth::tthinit(); - } + &init_tth(); return &Apache::lonxml::xmlbegin(). &Apache::lonxml::fontsettings(). "\n\n". - &Apache::lonxml::registerurl(). + &Apache::lonmenu::registerurl(undef,'tex'). "\n\n"; } # ================================================================== Conversion +$Apache::lontexconvert::messedup=0; sub converted { - my $texstring=shift; - my $xmlstring; + my $texstring=shift; + my $xmlstring='[UNDISPLAYABLE]'; + if ($Apache::lontexconvert::messedup) { + return '[TeX Unconverted Due To Previous Errors]'; + } + eval(<<'ENDCONV'); + { + local $SIG{SEGV}=sub { $Apache::lontexconvert::messedup=1; die; }; if ($ENV{'browser.mathml'}) { $xmlstring=&tth::ttm($$texstring); $xmlstring=~s/\/\/g; $xmlstring=~s/\/\/g; $xmlstring=~s/\/\\<\/p\>/g; $errorstring.=&tth::ttmerror(); - } else { + } else { $xmlstring=&tth::tth($$texstring); $errorstring.=&tth::ttherror(); + $xmlstring=~s---g; + } + $xmlstring=~s/^\s*//; + $xmlstring=~s/\s*$//; + } +ENDCONV + if ($Apache::lontexconvert::messedup || &tth::tthmessedup()) { + &Apache::lonnet::logthis("Trying to kill myself"); + $Apache::lontexconvert::messedup=1; + my $request=Apache->request(); + $request->child_terminate(); } return $xmlstring; } @@ -97,6 +131,65 @@ sub footer { return $xmlstring; } +# ------------------------------------------------------------ Message display + +sub to_convert { + my ($string) = @_; + $string=~s/\/ /gs; +# $string=~s/\s/ /gs; + $string=&HTML::Entities::decode($string); + return &converted(\$string); +} + +sub smiley { + my $expression=shift; + if ($ENV{'browser.imagesuppress'} eq 'on') { return $expression; } + my %smileys=('\:\-\)' => 'smiley', + '8\-\)' => 'coolsmile', + '8\-(I|\|)' => 'coolindiff', + ':\-(I|\|)' => 'neutral', + '\:\-(o|O|\(\))' => 'shocked', + ':\-\(' => 'frowny', + '\;\-\)' => 'wink', + '\:\-P' => 'baeh', + '\:\-(\\\|\\/)' => 'hrrm', + '\:\-D' => 'bigsmile', + '\:\-C' => 'angry', + '\:(\'|\`)\-\(' => 'cry', + '\:\-(X|\#)' => 'lipsrsealed', + '\:\-S' => 'huh'); + my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'}; + foreach (keys %smileys) { + $expression=~s/$_/\/gs; + } + return $expression; +} + +sub msgtexconverted { + my $message=shift; + my $email=shift; + $errorstring=''; + &init_tth(); + my $outmessage=''; + my $tex=0; + foreach (split(/(?:\<\;|\<)\/*m\s*(?:\>\;|\>)/i,$message)) { + if ($tex) { + if ($email) { + $outmessage.=''.&to_convert($_).'
'; $tex=0;
+	    } else {
+		$outmessage.=&to_convert($_); $tex=0;
+	    }
+	} else {
+            $outmessage.=&smiley($_); $tex=1;
+	}
+    }
+    if (wantarray) {
+	return ($outmessage,$errorstring);
+    } else {
+	return $outmessage.$errorstring;
+    }
+}
+
 1;
 __END__