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Diff for /loncom/homework/structuretags.pm between versions 1.4 and 1.6

version 1.4, 2000/08/22 16:19:26 version 1.6, 2000/09/14 15:41:32
Line 1 Line 1
 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA # <script> definiton
 # <script> definiton  
   
   
 package Apache::structuretags;   package Apache::structuretags; 
   
Line 8  use strict; Line 6  use strict;
 use Apache::lonnet;  use Apache::lonnet;
   
 sub BEGIN {  sub BEGIN {
   &Apache::lonxml::register('Apache::structuretags',('block','while'));    &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist'));
 }  }
   
 sub start_block {  sub start_block {
Line 37  sub start_while { Line 35  sub start_while {
   $code =~ s/\"//g;    $code =~ s/\"//g;
   $code .=';return $condition;';    $code .=';return $condition;';
   
   print "<H2>WHILE CONDITION = [$code]</H2>";    push( @Apache::structuretags::whileconds, $code); 
   my $result = &Apache::run::run($code,$safeeval);    my $result = &Apache::run::run($code,$safeeval);
   my $bodytext=$$parser[$#$parser]->get_text("/while");    my $bodytext=$$parser[$#$parser]->get_text("/while");
   if ( $result ) { # condition is TRUE, bodytext is evaluated    push( @Apache::structuretags::whilebody, $bodytext);
 # push the bodytext into parser stack    if ( $result ) { 
      my $tempparser=HTML::TokeParser->new(\$bodytext);       my $tempparser=HTML::TokeParser->new(\$bodytext);
      push (@$parser,$tempparser);       push (@$parser,$tempparser);
   } else { # condition is FALSE initially, skip bodytext  
   }    }
   return "";    return "";
 }  }
   
 sub end_while {  sub end_while {
 # pop parser from parser stack    my ($target,$token,$parstack,$parser,$safeeval)=@_;
 # check if condition is TRUE,     my $code = pop @Apache::structuretags::whileconds;
 #   TRUE  then push content into parser stack    my $bodytext = pop @Apache::structuretags::whilebody;
 #   FALSE then continue    my $result = &Apache::run::run($code,$safeeval);
     if ( $result ) { 
        my $tempparser=HTML::TokeParser->new(\$bodytext);
        push (@$parser,$tempparser);
     } 
     return "";
   }
   
   # <randomlist> 
   #  <tag1>..</tag1>
   #  <tag2>..</tag2>
   #  <tag3>..</tag3>
   #  ... 
   # </randomlist>
   sub start_randomlist {
     my ($target,$token,$parstack,$parser,$safeeval)=@_;
     my $body= &Apache::lonxml::get_all_text("randomlist",$$parser[$#$parser]);
     my $b_parser= HTML::TokeParser->new(\$body);
     my $b_tok;
     my @randomlist;
     my $list_item;
     my $param;
   
     while($b_tok = $b_parser->get_token() ) {
       if($b_tok->[0] eq 'S') { # start tag
       # get content of the tag until matching end tag
       # get all text upto the matching tag
       # and push the content into @randomlist
         $list_item = &Apache::lonxml::get_all_text($b_tok->[1],$b_parser);
         $param='';
         map {$param .= "$_=\"$b_tok->[2]->{$_}\" "} @{$b_tok->[3]};
         $param=~ s/^\s*(\S+)\s*$/$1/;
         $param= " $param" if $param ne "";
         $list_item = "<$b_tok->[1]"."$param>"."$list_item"."</$b_tok->[1]>";
         print "<B>START-TAG $b_tok->[1], $list_item</B><BR>";
         push(@randomlist,$list_item);
       }
       if($b_tok->[0] eq 'T') { # text
       # what to do with text in between tags?
         #  print "<B>TEXT $b_tok->[1]</B><BR>";
       }
       # if($b_tok->[0] eq 'E') { # end tag, should not happen
         #  print "<B>END-TAG $b_tok->[1]</B><BR>";
       # }
     }
     # randomly select one item from the array @randomlist 
     # and created a new parser for it and push it onto the
     # parser stack
     my $bodytext = $randomlist[int(rand($#randomlist - 1)) + 1];
     my $tempparser=HTML::TokeParser->new(\$bodytext);
     print "SELECT-BODY<B>$bodytext</B><BR>";
     push (@$parser,$tempparser);
     return "";
 }  }
   
   sub end_randomlist {
   }
   
   
 1;  1;
 __END__  __END__
Removed from v.1.4  
changed lines
  Added in v.1.6

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