--- loncom/xml/lontexconvert.pm 2002/10/25 15:08:09 1.11 +++ loncom/xml/lontexconvert.pm 2003/02/27 21:01:39 1.19 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # TeX Conversion Module # -# $Id: lontexconvert.pm,v 1.11 2002/10/25 15:08:09 www Exp $ +# $Id: lontexconvert.pm,v 1.19 2003/02/27 21:01:39 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; @@ -45,8 +44,10 @@ package Apache::lontexconvert; use strict; use tth; use vars qw($errorstring); +use Apache(); use Apache::lonmsg; use Apache::lonxml; +use Apache::lonmenu; # ====================================================================== Header @@ -55,30 +56,55 @@ sub header { my $time=time; if ($ENV{'browser.mathml'}) { &tth::ttminit(); + if ($ENV{'browser.unicode'}) { + &tth::ttmoptions('-L -u1'); + } else { + &tth::ttmoptions('-L -u0'); + } } else { &tth::tthinit(); + if ($ENV{'browser.unicode'}) { + &tth::tthoptions('-L -u1'); + } else { + &tth::tthoptions('-L -u0'); + } } return &Apache::lonxml::xmlbegin(). &Apache::lonxml::fontsettings(). "\n\n". - &Apache::lonxml::registerurl(undef,'tex'). + &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 '[Uncoverted 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); $errorstring.=&tth::ttherror(); + } + } +ENDCONV + if ($Apache::lontexconvert::messedup || &tth::tthmessedup()) { + &Apache::lonnet::logthis("Trying to kill myself"); + $Apache::lontexconvert::messedup=1; + my $request=Apache->request(); + $request->child_terminate(); } return $xmlstring; } @@ -102,26 +128,33 @@ sub footer { sub to_convert { my ($string) = @_; $string=~s/\/ /g; + $string=&HTML::Entities::decode($string); return &converted(\$string); } sub msgtexconverted { my $message=shift; - #FIXME this crap needs to go but right now the -L option might be - #ignored if this isn;t the first time the tth engine is used - #thus the \\document class crap, it makes sure we init the LaTeX stuff + $errorstring=''; if ($ENV{'browser.mathml'}) { - &tth::ttminit(); - &tth::ttmoptions("-L"); + &tth::ttminit(); + if ($ENV{'browser.unicode'}) { + &tth::ttmoptions('-L -u1'); + } else { + &tth::ttmoptions('-L -u0'); + } } else { - &tth::tthinit(); - &tth::tthoptions("-L"); + &tth::tthinit(); + if ($ENV{'browser.unicode'}) { + &tth::tthoptions('-L -u1'); + } else { + &tth::tthoptions('-L -u0'); + } } - $message=~s/(\$\$.+?\$\$)/&to_convert("\\documentclass{article}".$1)/ge; - $message=~s/(\$.+?\$)/&to_convert("\\documentclass{article}".$1)/ge; - $message=~s/(\\\(.+?\\\))/&to_convert("\\documentclass{article}".$1)/ge; - $message=~s/(\\\[.+?\\\])/&to_convert("\\documentclass{article}".$1)/ge; + $message=~s/(\$\$.+?\$\$)/&to_convert($1)/ge; + $message=~s/(\$.+?\$)/&to_convert($1)/ge; + $message=~s/(\\\(.+?\\\))/&to_convert($1)/ge; + $message=~s/(\\\[.+?\\\])/&to_convert($1)/ge; return $message.$errorstring; }