Annotation of loncom/homework/structuretags.pm, revision 1.17
1.6 tsai 1: # The LearningOnline Network with CAPA # <script> definiton
1.1 albertel 2:
3: package Apache::structuretags;
4:
5: use strict;
6: use Apache::lonnet;
7:
8: sub BEGIN {
1.11 albertel 9: &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','web','tex','part'));
1.10 albertel 10: }
11:
12: sub start_web {
13: my ($target,$token,$parstack,$parser,$safeeval)=@_;
14: my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]);
15: return $bodytext;
16: }
17:
18: sub end_web {
19: }
20:
21: sub start_tex {
22: my ($target,$token,$parstack,$parser,$safeeval)=@_;
23: my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]);
24: return '';
25: }
26:
27: sub end_tex {
1.9 albertel 28: }
29:
30: sub start_problem {
31: my ($target,$token,$parstack,$parser,$safeeval)=@_;
1.15 www 32: unless ($target eq 'meta') {
1.16 albertel 33: my $args ='';
34: if ( $#$parstack > -1 ) {
35: $args=$$parstack[$#$parstack];
36: }
37: my $name = &Apache::run::run("{$args;".'return $name}',$safeeval);
38: $Apache::inputtags::part='0';
39: my $expression='$external::part='.$Apache::inputtags::part.';';
40: $safeeval->share_from('Apache::inputtags',['@part']);
1.17 ! albertel 41: &Apache::run::run($expression,$safeeval);
1.16 albertel 42: return "<title>$name</title>\n<body bgcolor=#FFFFFF>\n<form name=\"lonhomework\" method=\"POST\" action=\"".$ENV{'request.uri'}."\">";
43: }
1.9 albertel 44: }
45:
46: sub end_problem {
1.16 albertel 47: my ($target,$token,$parstack,$parser,$safeeval)=@_;
48: my $result='';
49: unless ($target eq 'meta') {
50: $result="</form></body>\n";
51: } else {
52: if ($Apache::inputtags::part ne '0') {
53: $result=&Apache::response::mandatory_part_meta;
54: }
55: }
56: return $result;
1.1 albertel 57: }
58:
59: sub start_block {
60: my ($target,$token,$parstack,$parser,$safeeval)=@_;
61:
62: my $code = @$parstack[$#$parstack];
63: $code =~ s/\"//g;
64: $code .=';return $condition;';
1.3 albertel 65: # print "<br>$code<br>";
1.1 albertel 66: my $result = &Apache::run::run($code,$safeeval);
67: if ( ! $result ) {
1.3 albertel 68: # my $skip=$$parser[$#$parser]->get_text("/block");
1.9 albertel 69: my $skip=&Apache::lonxml::get_all_text("/block",$$parser[$#$parser]);
1.3 albertel 70: # print "skipped $skip";
1.1 albertel 71: }
72: return "";
73: }
74:
75: sub end_block {
1.4 tsai 76: }
77:
78: sub start_while {
79: my ($target,$token,$parstack,$parser,$safeeval)=@_;
80:
81: my $code = @$parstack[$#$parstack];
82: $code =~ s/\"//g;
83: $code .=';return $condition;';
84:
1.5 tsai 85: push( @Apache::structuretags::whileconds, $code);
1.4 tsai 86: my $result = &Apache::run::run($code,$safeeval);
87: my $bodytext=$$parser[$#$parser]->get_text("/while");
1.5 tsai 88: push( @Apache::structuretags::whilebody, $bodytext);
89: if ( $result ) {
1.8 albertel 90: &Apache::lonxml::newparser($parser,\$bodytext);
1.4 tsai 91: }
92: return "";
93: }
94:
95: sub end_while {
1.5 tsai 96: my ($target,$token,$parstack,$parser,$safeeval)=@_;
97: my $code = pop @Apache::structuretags::whileconds;
98: my $bodytext = pop @Apache::structuretags::whilebody;
99: my $result = &Apache::run::run($code,$safeeval);
100: if ( $result ) {
1.8 albertel 101: &Apache::lonxml::newparser($parser,\$bodytext);
1.5 tsai 102: }
103: return "";
1.1 albertel 104: }
1.6 tsai 105:
106: # <randomlist>
107: # <tag1>..</tag1>
108: # <tag2>..</tag2>
109: # <tag3>..</tag3>
110: # ...
111: # </randomlist>
112: sub start_randomlist {
113: my ($target,$token,$parstack,$parser,$safeeval)=@_;
1.9 albertel 114: my $body= &Apache::lonxml::get_all_text("/randomlist",$$parser[$#$parser]);
1.6 tsai 115: my $b_parser= HTML::TokeParser->new(\$body);
116: my $b_tok;
117: my @randomlist;
118: my $list_item;
119:
120: while($b_tok = $b_parser->get_token() ) {
121: if($b_tok->[0] eq 'S') { # start tag
122: # get content of the tag until matching end tag
123: # get all text upto the matching tag
124: # and push the content into @randomlist
1.9 albertel 125: $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser);
1.7 tsai 126: $list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>";
1.6 tsai 127: push(@randomlist,$list_item);
1.7 tsai 128: # print "<BR><B>START-TAG $b_tok->[1], $b_tok->[4], $list_item</B>";
1.6 tsai 129: }
130: if($b_tok->[0] eq 'T') { # text
131: # what to do with text in between tags?
132: # print "<B>TEXT $b_tok->[1]</B><BR>";
133: }
134: # if($b_tok->[0] eq 'E') { # end tag, should not happen
135: # print "<B>END-TAG $b_tok->[1]</B><BR>";
136: # }
137: }
1.7 tsai 138: my @idx_arr = (0 .. $#randomlist);
139: &Apache::structuretags::shuffle(\@idx_arr);
140: my $bodytext = '';
141: for(0 .. $#randomlist) {
142: $bodytext .= "$randomlist[ $idx_arr[$_] ]";
143: }
1.8 albertel 144:
145: &Apache::lonxml::newparser($parser,\$bodytext);
1.6 tsai 146: return "";
1.7 tsai 147: }
148:
149: sub shuffle {
150: my $a=shift;
151: my $i;
152: for($i=@$a;--$i;) {
153: my $j=int rand($i+1);
154: next if $i == $j;
155: @$a[$i,$j] = @$a[$j,$i];
156: }
1.6 tsai 157: }
158:
159: sub end_randomlist {
160: }
161:
1.11 albertel 162: sub start_part {
163: my ($target,$token,$parstack,$parser,$safeeval)=@_;
164: my $args ='';
165: if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
166: my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);
1.14 albertel 167: $Apache::inputtags::part=$id;
1.15 www 168: if ($target eq 'meta') {
1.16 albertel 169: return &Apache::response::mandatory_part_meta;
1.15 www 170: }
1.11 albertel 171: }
172:
173: sub end_part {
174: my ($target,$token,$parstack,$parser,$safeeval)=@_;
175: }
1.1 albertel 176:
177: 1;
178: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to structuretags.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / homework