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Diff for /loncom/xml/lontexconvert.pm between versions 1.30 and 1.44

version 1.30, 2004/01/28 20:48:35 version 1.44, 2005/02/24 01:21:50
Line 36 Line 36
 # The C source of the Code may not be distributed by the Licensee  # The C source of the Code may not be distributed by the Licensee
 # to any other parties under any circumstances.  # to any other parties under any circumstances.
 #  #
 # 05/29/00,05/30,10/11,10/20 Gerd Kortemeyer  
 # 5/4 Gerd Kortemeyer  
   
 package Apache::lontexconvert;  package Apache::lontexconvert;
   
 use strict;  use strict;
 use tth;  use tth();
 use vars qw($errorstring);  use vars qw($errorstring);
 use Apache();  use Apache();
 use Apache::lonmsg;  use Apache::lonmsg();
 use Apache::lonxml;  use Apache::lonxml();
 use Apache::lonmenu;  use Apache::lonmenu();
   use Apache::lonlocal;
   
 # ====================================================================== Header  # ====================================================================== Header
   
Line 71  sub init_tth { Line 70  sub init_tth {
 }  }
   
 sub header {  sub header {
   $errorstring='';      $errorstring='';
   my $time=time;      my $time=time;
   &init_tth();      &init_tth();
   return &Apache::lonxml::xmlbegin().      return &Apache::lonxml::xmlbegin().
          &Apache::lonxml::fontsettings().   "\n<head>\n".
          "\n<head>\n".   &Apache::lonxml::fontsettings().
          &Apache::lonmenu::registerurl(undef,'tex').   &Apache::lonmenu::registerurl(undef,'tex').
  "\n</head>\n";   "\n</head>\n";
 }  }
   
 # ================================================================== Conversion  # ================================================================== Conversion
   
 $Apache::lontexconvert::messedup=0;  $Apache::lontexconvert::messedup=0;
 sub converted {  
   my $texstring=shift;  # we need this routine because &converted can get called from inside
   my $xmlstring='[UNDISPLAYABLE]';  # of the safespace (through &xmlparse('<m>stuff</m>') which doesn't
   if ($Apache::lontexconvert::messedup) {  # allow the opcode for alarm, so we need to compile this before we get
       return '[TeX Unconverted Due To Previous Errors]';  # into the safe space since opcode checks only occur at compile time
   }  sub convert_real {
   eval(<<'ENDCONV');      my ($texstring)=@_;
   {      my ($xmlstring,$errorstring);
     local $SIG{SEGV}=sub { $Apache::lontexconvert::messedup=1; die; };      local $SIG{SEGV}=sub { $Apache::lontexconvert::messedup=1; die; };
       local $SIG{ALRM}=sub { 
    &Apache::lonnet::logthis("ALRM");
    $xmlstring='['.&mt("TeX unconverted due to errors").']';
    $Apache::lontexconvert::messedup=1;
    die &mt("TeX unconverted due to errors");
       };
       alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
     if ($ENV{'browser.mathml'}) {      if ($ENV{'browser.mathml'}) {
       $xmlstring=&tth::ttm($$texstring);   $xmlstring=&tth::ttm($$texstring);
       $xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g;   $xmlstring=~s/\<math\>/\<math xmlns=\"\&mathns\;\"\>/g;
       $xmlstring=~s/\<br\>/\<br\/\>/g;   $xmlstring=~s/\<br\>/\<br\/\>/g;
       $xmlstring=~s/\<p\>/\<p\>\<\/p\>/g;   $xmlstring=~s/\<p\>/\<p\>\<\/p\>/g;
       $errorstring.=&tth::ttmerror();   $errorstring.=&tth::ttmerror();
     } else {      } else {
       $xmlstring=&tth::tth($$texstring);   $xmlstring=&tth::tth($$texstring);
       $errorstring.=&tth::ttherror();   $errorstring.=&tth::ttherror();
       $xmlstring=~s-</font(\s*)>-</font>-g;   $xmlstring=~s-</font(\s*)>-</font>-g;
     }      }
       $xmlstring=~s/^\s*\<br clear\=\"all\"/\<br/s;
     $xmlstring=~s/^\s*//;      $xmlstring=~s/^\s*//;
     $xmlstring=~s/\s*$//;      $xmlstring=~s/\s*$//;
   }      alarm(0);
       return ($xmlstring,$errorstring);
   }
   
   sub converted {
       my $texstring=shift;
       my $xmlstring='['.&mt('UNDISPLAYABLE').']';
       if ($Apache::lontexconvert::messedup) {
    return '['.&mt('TeX unconverted due to previous errors').']';
       }
       eval(<<'ENDCONV');
       ($xmlstring,$errorstring)=&convert_real($texstring)
 ENDCONV  ENDCONV
   if ($Apache::lontexconvert::messedup || &tth::tthmessedup()) {      if ($@) {
       &Apache::lonnet::logthis("Trying to kill myself");   $errorstring.=&mt("Evaluation Error: ").$@;
       $Apache::lontexconvert::messedup=1;   $Apache::lontexconvert::messedup=1;
       my $request=Apache->request();      }
       $request->child_terminate();      if ($Apache::lontexconvert::messedup || &tth::tthmessedup() || 
   }   $errorstring) {
   return $xmlstring;   &Apache::lonnet::logthis("Trying to kill myself");
    $Apache::lontexconvert::messedup=1;
    my $request=Apache->request();
    $request->child_terminate();
       }
       return $xmlstring;
 }  }
   
 # ====================================================================== Footer  # ====================================================================== Footer
Line 142  sub to_convert { Line 165  sub to_convert {
 }  }
   
 sub smiley {  sub smiley {
    my $expression=shift;      my $expression=shift;
    if ($ENV{'browser.imagesuppress'} eq 'on') { return $expression; }      if ($ENV{'browser.imagesuppress'} eq 'on') { return $expression; }
    my %smileys=('\:\-\)' => 'smiley',      my %smileys=('\:\-\)' => 'smiley',
                 '8\-\)'  => 'coolsmile',   '8\-\)'  => 'coolsmile',
                 '8\-(I|\|)'   => 'coolindiff',   '8\-(I|\|)'   => 'coolindiff',
                 ':\-(I|\|)'   => 'neutral',   ':\-(I|\|)'   => 'neutral',
                 '\:\-(o|O|\(\))' => 'shocked',   '\:\-(o|O|\(\))' => 'shocked',
                 ':\-\('  => 'frowny',   ':\-\('  => 'frowny',
                 '\;\-\)' => 'wink',   '\;\-\)' => 'wink',
                 '\:\-P'  => 'baeh',   '\:\-P'  => 'baeh',
                 '\:\-(\\\|\\/)' => 'hrrm',   '\:\-(\\\|\\/)' => 'hrrm',
                 '\:\-D'  => 'bigsmile',   '\:\-D'  => 'bigsmile',
                 '\:\-C'  => 'angry',   '\:\-C'  => 'angry',
                 '\:(\'|\`)\-\(' => 'cry',   '\:(\'|\`)\-\(' => 'cry',
                 '\:\-(X|\#)' => 'lipsrsealed',   '\:\-(X|\#)' => 'lipsrsealed',
                 '\:\-S' => 'huh');   '\:\-S' => 'huh');
    my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};      my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
    foreach (keys %smileys) {      foreach (keys %smileys) {
       $expression=~s/$_/\<img src="$iconpath\/$smileys{$_}.gif" \/\>/gs;    $expression=~s/$_/\<img src="$iconpath\/$smileys{$_}.gif" \/\>/gs; 
    }      }
    return $expression;      return $expression;
 }  }
   
 sub msgtexconverted {  sub msgtexconverted {
     my $message=shift;      my ($message,$email) = @_;
     my $email=shift;  
     $errorstring='';      $errorstring='';
     &init_tth();      &init_tth();
     my $outmessage='';      my $outmessage='';
Line 190  sub msgtexconverted { Line 212  sub msgtexconverted {
     }      }
 }  }
   
   sub algebra {
       my ($string,$target)=@_;
       my $parser = new AlgParserWithImplicitExpand;
       my $ret = $parser->parse($string);
       my $result='['.&mt('Algebra unconverted due to previous errors').']';
       if ( ref($ret) ) {
    $parser->tostring();
    $parser->normalize();
    my $latex=$parser->tolatex();
    $latex='$$'.$latex.'$$';
    if ($target eq 'web' || $target eq 'analyze') {
       $result = &converted(\$latex);
    } else {
       $result = $latex;
    }
       } else {
    &Apache::lonxml::error($parser->{'htmlerror'});
       }
   }
   
 1;  1;
 __END__  __END__
   
Removed from v.1.30  
changed lines
  Added in v.1.44

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