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Annotation of loncom/homework/caparesponse/caparesponse.pm, revision 1.10

1.3       albertel    1: # The LearningOnline Network with CAPA
                      2: # caparesponse definition
                      3: 
                      4: package Apache::caparesponse;
                      5: use strict;
1.4       albertel    6: use capa;
1.3       albertel    7: 
                      8: sub BEGIN {
                      9:   &Apache::lonxml::register('Apache::caparesponse',('caparesponse'));
                     10: }
                     11: 
1.7       albertel   12: $Apache::caparesponse::result='';
1.3       albertel   13: sub start_caparesponse {
1.7       albertel   14:   my $envkey;
                     15:   
1.8       albertel   16:   #foreach $envkey (sort keys %ENV) {
                     17:   #  Apache::lonxml::debug("$envkey ---- $ENV{$envkey}<br>");
                     18:   #}
1.7       albertel   19:   
1.8       albertel   20:   #Apache::lonxml::debug("\n<br>\nreal caparesponse<br>\n");
1.3       albertel   21: }
                     22: 
                     23: sub end_caparesponse {
1.7       albertel   24:   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
                     25:   if ( defined $ENV{'form.'.$ENV{'form.request.prefix'}.'submit'}) {
                     26:     $Apache::caparesponse::result='';
                     27:     $safeeval->share('&caparesponse_capa_check_answer');
                     28:     $safeeval->share('$Apache::caparesponse::result');
                     29:     my $response = $ENV{'form.'.$ENV{'form.request.prefix'}.'HWVAL'.$Apache::inputtags::curvalue};
1.9       albertel   30:     #Apache::lonxml::debug("submitted a $response<br>\n");
                     31:     #Apache::lonxml::debug($$parstack[$#$parstack] . "\n<br>");
1.7       albertel   32:     my $expression="caparesponse_check $response $$parstack[$#$parstack];";
1.9       albertel   33:     #&Apache::run::run($expression,$safeeval);
1.7       albertel   34:     
1.9       albertel   35:     #&Apache::lonxml::debug("\n<br>result:$Apache::caparesponse::result:<br>\n");
                     36:     my $args ='';
                     37:     if ( $#$parstack > -1 ) {
                     38:       $args=$$parstack[$#$parstack];
                     39:     }
                     40:     my $answer = &Apache::run::run("{$args;".'return $answer}',$safeeval);
1.10    ! albertel   41:     if ( $answer == 1.0 * $answer ) {
        !            42:       my $tol = &Apache::run::run("{$args;".'return $tol}',$safeeval);
        !            43:       my $format = &Apache::run::run("{$args;".'return $format}',$safeeval);
        !            44:       my $formatedanswer = sprintf('%.'.$format,$answer);
        !            45:       my $difference = abs($answer - $formatedanswer);
        !            46:       my $studiff = abs($answer - $response);
        !            47:       if ( $difference > $studiff ) {
        !            48: 	return "Correct, Computer had $answer<br></br>";
        !            49:       } else {
        !            50: 	return "Incorrect, Computer had $answer<br></br>";
        !            51:       }
        !            52:     } else {  
        !            53:       if ( $answer eq $response ) {
        !            54: 	return "Correct, Computer had $answer<br></br>";
        !            55:       } else {
        !            56: 	return "Incorrect, Computer had $answer<br></br>";
        !            57:       }
1.9       albertel   58:     }
1.8       albertel   59:   } else {
                     60:     #return "The correct answer is ".&Apache::run::run("{$$parstack['-1'];".'return $answer}',$safeeval)."\n";
1.7       albertel   61:   }
                     62:   #Apache::lonxml::debug("\n<br>\nreal end caparesponse<br>\n");
1.8       albertel   63:   return '';
1.3       albertel   64: }
                     65: 
1.1       albertel   66: 1;
1.3       albertel   67: __END__
                     68: