Annotation of loncom/homework/structuretags.pm, revision 1.4
1.1 albertel 1: # The LearningOnline Network with CAPA
2: # <script> definiton
3:
4:
5: package Apache::structuretags;
6:
7: use strict;
8: use Apache::lonnet;
9:
10: sub BEGIN {
1.4 ! tsai 11: &Apache::lonxml::register('Apache::structuretags',('block','while'));
1.1 albertel 12: }
13:
14: sub start_block {
15: my ($target,$token,$parstack,$parser,$safeeval)=@_;
16:
17: my $code = @$parstack[$#$parstack];
18: $code =~ s/\"//g;
19: $code .=';return $condition;';
1.3 albertel 20: # print "<br>$code<br>";
1.1 albertel 21: my $result = &Apache::run::run($code,$safeeval);
22: if ( ! $result ) {
1.3 albertel 23: # my $skip=$$parser[$#$parser]->get_text("/block");
24: my $skip=&Apache::lonxml::get_all_text("block",$$parser[$#$parser]);
25: # print "skipped $skip";
1.1 albertel 26: }
27: return "";
28: }
29:
30: sub end_block {
1.4 ! tsai 31: }
! 32:
! 33: sub start_while {
! 34: my ($target,$token,$parstack,$parser,$safeeval)=@_;
! 35:
! 36: my $code = @$parstack[$#$parstack];
! 37: $code =~ s/\"//g;
! 38: $code .=';return $condition;';
! 39:
! 40: print "<H2>WHILE CONDITION = [$code]</H2>";
! 41: my $result = &Apache::run::run($code,$safeeval);
! 42: my $bodytext=$$parser[$#$parser]->get_text("/while");
! 43: if ( $result ) { # condition is TRUE, bodytext is evaluated
! 44: # push the bodytext into parser stack
! 45: my $tempparser=HTML::TokeParser->new(\$bodytext);
! 46: push (@$parser,$tempparser);
! 47: } else { # condition is FALSE initially, skip bodytext
! 48: }
! 49: return "";
! 50: }
! 51:
! 52: sub end_while {
! 53: # pop parser from parser stack
! 54: # check if condition is TRUE,
! 55: # TRUE then push content into parser stack
! 56: # FALSE then continue
! 57:
1.1 albertel 58: }
59:
60: 1;
61: __END__
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