version 1.4, 2000/08/22 16:19:26
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version 1.9, 2000/10/11 21:03:27
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA # <script> definiton |
# <script> definiton |
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package Apache::structuretags; |
package Apache::structuretags; |
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Line 8 use strict;
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Line 6 use strict;
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use Apache::lonnet; |
use Apache::lonnet; |
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sub BEGIN { |
sub BEGIN { |
&Apache::lonxml::register('Apache::structuretags',('block','while')); |
&Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem')); |
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} |
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sub start_problem { |
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my ($target,$token,$parstack,$parser,$safeeval)=@_; |
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my $args =''; |
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if ( $#$parstack > -1 ) { |
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$args=$$parstack[$#$parstack]; |
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} |
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my $name = &Apache::run::run("{$args;".'return $name}',$safeeval); |
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return "<title>$name</title>\n<body bgcolor=#FFFFFF>\n" |
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} |
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sub end_problem { |
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return "</body>\n"; |
} |
} |
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sub start_block { |
sub start_block { |
Line 21 sub start_block {
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Line 33 sub start_block {
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my $result = &Apache::run::run($code,$safeeval); |
my $result = &Apache::run::run($code,$safeeval); |
if ( ! $result ) { |
if ( ! $result ) { |
# my $skip=$$parser[$#$parser]->get_text("/block"); |
# my $skip=$$parser[$#$parser]->get_text("/block"); |
my $skip=&Apache::lonxml::get_all_text("block",$$parser[$#$parser]); |
my $skip=&Apache::lonxml::get_all_text("/block",$$parser[$#$parser]); |
# print "skipped $skip"; |
# print "skipped $skip"; |
} |
} |
return ""; |
return ""; |
Line 37 sub start_while {
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Line 49 sub start_while {
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$code =~ s/\"//g; |
$code =~ s/\"//g; |
$code .=';return $condition;'; |
$code .=';return $condition;'; |
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print "<H2>WHILE CONDITION = [$code]</H2>"; |
push( @Apache::structuretags::whileconds, $code); |
my $result = &Apache::run::run($code,$safeeval); |
my $result = &Apache::run::run($code,$safeeval); |
my $bodytext=$$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); |
&Apache::lonxml::newparser($parser,\$bodytext); |
push (@$parser,$tempparser); |
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} else { # condition is FALSE initially, skip bodytext |
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} |
} |
return ""; |
return ""; |
} |
} |
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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); |
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if ( $result ) { |
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&Apache::lonxml::newparser($parser,\$bodytext); |
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} |
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return ""; |
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} |
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# <randomlist> |
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# <tag1>..</tag1> |
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# <tag2>..</tag2> |
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# <tag3>..</tag3> |
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# ... |
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# </randomlist> |
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sub start_randomlist { |
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my ($target,$token,$parstack,$parser,$safeeval)=@_; |
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my $body= &Apache::lonxml::get_all_text("/randomlist",$$parser[$#$parser]); |
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my $b_parser= HTML::TokeParser->new(\$body); |
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my $b_tok; |
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my @randomlist; |
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my $list_item; |
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while($b_tok = $b_parser->get_token() ) { |
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if($b_tok->[0] eq 'S') { # start tag |
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# get content of the tag until matching end tag |
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# get all text upto the matching tag |
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# and push the content into @randomlist |
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$list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser); |
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$list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>"; |
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push(@randomlist,$list_item); |
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# print "<BR><B>START-TAG $b_tok->[1], $b_tok->[4], $list_item</B>"; |
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} |
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if($b_tok->[0] eq 'T') { # text |
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# what to do with text in between tags? |
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# print "<B>TEXT $b_tok->[1]</B><BR>"; |
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} |
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# if($b_tok->[0] eq 'E') { # end tag, should not happen |
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# print "<B>END-TAG $b_tok->[1]</B><BR>"; |
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# } |
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} |
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my @idx_arr = (0 .. $#randomlist); |
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&Apache::structuretags::shuffle(\@idx_arr); |
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my $bodytext = ''; |
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for(0 .. $#randomlist) { |
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$bodytext .= "$randomlist[ $idx_arr[$_] ]"; |
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} |
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&Apache::lonxml::newparser($parser,\$bodytext); |
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return ""; |
} |
} |
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sub shuffle { |
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my $a=shift; |
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my $i; |
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for($i=@$a;--$i;) { |
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my $j=int rand($i+1); |
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next if $i == $j; |
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@$a[$i,$j] = @$a[$j,$i]; |
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} |
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} |
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sub end_randomlist { |
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} |
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1; |
1; |
__END__ |
__END__ |