--- loncom/xml/lontexconvert.pm 2002/09/16 19:29:06 1.8 +++ loncom/xml/lontexconvert.pm 2004/03/04 15:40:22 1.31 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # TeX Conversion Module # -# $Id: lontexconvert.pm,v 1.8 2002/09/16 19:29:06 albertel Exp $ +# $Id: lontexconvert.pm,v 1.31 2004/03/04 15:40:22 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; @@ -45,42 +44,77 @@ 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(); - } - return &Apache::lonxml::xmlbegin(). - &Apache::lonxml::fontsettings(). - "\n\n". - &Apache::lonxml::registerurl(undef,'tex'). - "\n\n"; + $errorstring=''; + my $time=time; + &init_tth(); + return &Apache::lonxml::xmlbegin(). + &Apache::lonxml::fontsettings(). + "\n\n". + &Apache::lonmenu::registerurl(undef,'tex'). + "\n\n"; } # ================================================================== Conversion +$Apache::lontexconvert::messedup=0; 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; + 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($$texstring); + $xmlstring=~s/\/\/g; + $xmlstring=~s/\/\/g; + $xmlstring=~s/\/\\<\/p\>/g; + $errorstring.=&tth::ttmerror(); + } else { + $xmlstring=&tth::tth($$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 $xmlstring; } # ====================================================================== Footer @@ -99,19 +133,61 @@ sub footer { # ------------------------------------------------------------ Message display +sub to_convert { + my ($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 $message=shift; - if ($ENV{'browser.mathml'}) { - &tth::ttminit(); - &tth::ttmoptions("-L"); + 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 {
-      &tth::tthinit();
-      &tth::tthoptions("-L");
+	return $outmessage.$errorstring;
     }
-    $message=~s/(\$\$.+?\$\$)/&converted(\$1)/ge;
-    $message=~s/(\$.+?\$)/&converted(\$1)/ge;
-    $message=~s/(\\\[.+?\\\])/&converted(\$1)/ge;
-    return $message.$errorstring;
 }
 
 1;