1: # The LearningOnline Network with CAPA
2: # caparesponse definition
3: #
4: # $Id: caparesponse.pm,v 1.203 2006/12/19 00:40:39 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: package Apache::caparesponse;
30: use strict;
31: use capa;
32: use Safe::Hole;
33: use Apache::lonmaxima();
34: use Apache::lonlocal;
35: use Apache::lonnet;
36: use Apache::response();
37: use Storable qw(dclone);
38:
39: BEGIN {
40: &Apache::lonxml::register('Apache::caparesponse',('numericalresponse','stringresponse','formularesponse'));
41: }
42:
43: my %answer;
44: sub get_answer { return %answer; };
45:
46: my $cur_name;
47: my $tag_internal_answer_name = 'INTERNAL';
48:
49: sub start_answer {
50: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
51: my $result;
52: $cur_name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
53: if ($cur_name =~ /^\s*$/) { $cur_name = $Apache::lonxml::curdepth; }
54: my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
55: if (!defined($type) && $tagstack->[-2] eq 'answergroup') {
56: $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2);
57: }
58: if (!defined($type)) { $type = 'ordered' };
59: $answer{$cur_name}= { 'type' => $type,
60: 'answers' => [] };
61: return $result;
62: }
63:
64: sub end_answer {
65: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
66: my $result;
67: undef($cur_name);
68: return $result;
69: }
70:
71: sub start_answergroup {
72: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
73: my $result;
74: return $result;
75: }
76:
77: sub end_answergroup {
78: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
79: my $result;
80: if ($target eq 'web') {
81: if ( &Apache::response::show_answer() ) {
82: my $partid = $Apache::inputtags::part;
83: my $id = $Apache::inputtags::response[-1];
84: &set_answertext($Apache::lonhomework::history{"resource.$partid.$id.answername"},
85: $target,$token,$tagstack,$parstack,$parser,
86: $safeeval,-2);
87: }
88: }
89: return $result;
90: }
91:
92: sub start_value {
93: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
94: my $result;
95: if ( $target eq 'web' || $target eq 'tex' ||
96: $target eq 'grade' || $target eq 'webgrade' ||
97: $target eq 'answer' || $target eq 'analyze' ) {
98: my $bodytext = &Apache::lonxml::get_all_text("/value",$parser,$style);
99: $bodytext = &Apache::run::evaluate($bodytext,$safeeval,
100: $$parstack[-1]);
101:
102: push(@{ $answer{$cur_name}{'answers'} },[$bodytext]);
103:
104: }
105: return $result;
106: }
107:
108: sub end_value {
109: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
110: my $result;
111: return $result;
112: }
113:
114: sub start_vector {
115: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
116: my $result;
117: if ( $target eq 'web' || $target eq 'tex' ||
118: $target eq 'grade' || $target eq 'webgrade' ||
119: $target eq 'answer' || $target eq 'analyze' ) {
120: my $bodytext = &Apache::lonxml::get_all_text("/vector",$parser,$style);
121: my @values = &Apache::run::run($bodytext,$safeeval,$$parstack[-1]);
122: if (@values == 1) {
123: @values = split(',',$values[0]);
124: }
125: push(@{ $answer{$cur_name}{'answers'} },\@values);
126: }
127: return $result;
128: }
129:
130: sub end_vector {
131: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
132: my $result;
133: return $result;
134: }
135:
136: sub start_array {
137: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
138: my $result;
139: if ( $target eq 'web' || $target eq 'tex' ||
140: $target eq 'grade' || $target eq 'webgrade' ||
141: $target eq 'answer' || $target eq 'analyze' ) {
142: my $bodytext = &Apache::lonxml::get_all_text("/array",$parser,$style);
143: my @values = &Apache::run::evaluate($bodytext,$safeeval,
144: $$parstack[-1]);
145: push(@{ $answer{$cur_name}{'answers'} },@values);
146: }
147: return $result;
148: }
149:
150: sub end_array {
151: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
152: my $result;
153: return $result;
154: }
155:
156: sub start_unit {
157: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
158: my $result;
159: return $result;
160: }
161:
162: sub end_unit {
163: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
164: my $result;
165: return $result;
166: }
167:
168: sub start_numericalresponse {
169: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
170: &Apache::lonxml::register('Apache::caparesponse',
171: ('answer','answergroup','value','array','unit',
172: 'vector'));
173: my $id = &Apache::response::start_response($parstack,$safeeval);
174: my $result;
175: undef(%answer);
176: undef(%{$safeeval->varglob('LONCAPA::CAPAresponse_args')});
177: if ($target eq 'edit') {
178: $result.=&Apache::edit::tag_start($target,$token);
179: $result.=&Apache::edit::text_arg('Answer:','answer',$token);
180: if ($token->[1] eq 'numericalresponse') {
181: $result.=&Apache::edit::text_arg('Incorrect Answers:','incorrect',
182: $token).
183: &Apache::loncommon::help_open_topic('numerical_wrong_answers');
184: $result.=&Apache::edit::text_arg('Unit:','unit',$token,5).
185: &Apache::loncommon::help_open_topic('Physical_Units');
186: $result.=&Apache::edit::text_arg('Format:','format',$token,4).
187: &Apache::loncommon::help_open_topic('Numerical_Response_Format');
188: } elsif ($token->[1] eq 'formularesponse') {
189: $result.=&Apache::edit::text_arg('Sample Points:','samples',
190: $token,40).
191: &Apache::loncommon::help_open_topic('Formula_Response_Sampling');
192: }
193: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
194: } elsif ($target eq 'modified') {
195: my $constructtag;
196: if ($token->[1] eq 'numericalresponse') {
197: $constructtag=&Apache::edit::get_new_args($token,$parstack,
198: $safeeval,'answer',
199: 'incorrect','unit',
200: 'format');
201: } elsif ($token->[1] eq 'formularesponse') {
202: $constructtag=&Apache::edit::get_new_args($token,$parstack,
203: $safeeval,'answer',
204: 'samples');
205: }
206: if ($constructtag) {
207: $result = &Apache::edit::rebuild_tag($token);
208: $result.=&Apache::edit::handle_insert();
209: }
210: } elsif ($target eq 'meta') {
211: $result=&Apache::response::meta_package_write('numericalresponse');
212: } elsif ($target eq 'answer' || $target eq 'grade') {
213: &Apache::response::reset_params();
214: } elsif ($target eq 'web') {
215: my $partid = $Apache::inputtags::part;
216: my $hideunit=&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffunit');
217: &Apache::lonxml::debug("Got unit $hideunit for $partid $id");
218: #no way to enter units, with radio buttons
219: if (lc($hideunit) eq "yes") {
220: my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
221: $safeeval);
222: if ($unit =~ /\S/) { $result.=" (in $unit) "; }
223: }
224: if ( &Apache::response::show_answer() ) {
225: &set_answertext($tag_internal_answer_name,$target,$token,$tagstack,
226: $parstack,$parser,$safeeval,-1);
227: }
228: }
229: return $result;
230: }
231:
232: sub set_answertext {
233: my ($name,$target,$token,$tagstack,$parstack,$parser,$safeeval,
234: $response_level) = @_;
235: &add_in_tag_answer($parstack,$safeeval,$response_level);
236:
237: return if ($name eq '' || !ref($answer{$name}));
238:
239: my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,
240: $safeeval,$response_level);
241: my $unit=&Apache::lonxml::get_param_var('unit',$parstack,$safeeval,
242: $response_level);
243:
244: &Apache::lonxml::debug("answer looks to be $name");
245: my @answertxt;
246: for (my $i=0; $i < scalar(@{$answer{$name}{'answers'}}); $i++) {
247: my $answertxt;
248: my $answer=$answer{$name}{'answers'}[$i];
249: foreach my $element (@$answer) {
250: if ( scalar(@$tagstack)
251: && $tagstack->[$response_level] ne 'numericalresponse') {
252: $answertxt.=$element.',';
253: } else {
254: my $format;
255: if ($#formats > 0) {
256: $format=$formats[$i];
257: } else {
258: $format=$formats[0];
259: }
260: if ($unit=~/\$/) { $format="\$".$format; $unit=~s/\$//g; }
261: if ($unit=~/\,/) { $format="\,".$format; $unit=~s/\,//g; }
262: my $formatted=&format_number($element,$format,$target,
263: $safeeval);
264: $answertxt.=' '.$formatted.',';
265: }
266:
267: }
268: chop($answertxt);
269: if ($target eq 'web') {
270: $answertxt.=" $unit ";
271: }
272:
273: push(@answertxt,$answertxt)
274: }
275:
276: my $id = $Apache::inputtags::response[-1];
277: $Apache::inputtags::answertxt{$id}=\@answertxt;
278: }
279:
280: sub setup_capa_args {
281: my ($safeeval,$parstack,$args,$response) = @_;
282: my $args_ref= \%{$safeeval->varglob('LONCAPA::CAPAresponse_args')};
283: undef(%{ $args_ref });
284:
285: foreach my $arg (@{$args}) {
286: $$args_ref{$arg}=
287: &Apache::lonxml::get_param($arg,$parstack,$safeeval);
288: }
289: foreach my $key (keys(%Apache::inputtags::params)) {
290: $$args_ref{$key}=$Apache::inputtags::params{$key};
291: }
292: &setup_capa_response($args_ref,$response);
293: return $args_ref;
294: }
295:
296: sub setup_capa_response {
297: my ($args_ref,$response) = @_;
298:
299: use Data::Dumper;
300: &Apache::lonxml::debug("response dump is ".&Dumper($response));
301:
302: if (ref($response)) {
303: $$args_ref{'response'}=dclone($response);
304: } else {
305: $$args_ref{'response'}=dclone([$response]);
306: }
307: }
308:
309: sub check_submission {
310: my ($response,$partid,$id,$tag,$parstack,$safeeval,$ignore_sig)=@_;
311: my @args = ('type','tol','sig','format','unit','calc','samples');
312: my $args_ref = &setup_capa_args($safeeval,$parstack,\@args,$response);
313:
314: my $hideunit=
315: &Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffunit');
316: #no way to enter units, with radio buttons
317: if ($Apache::lonhomework::type eq 'exam' ||
318: lc($hideunit) eq "yes") {
319: delete($$args_ref{'unit'});
320: }
321: #sig fig don't make much sense either
322: if (($Apache::lonhomework::type eq 'exam' ||
323: &Apache::response::submitted('scantron') ||
324: $ignore_sig) &&
325: $tag eq 'numericalresponse') {
326: delete($$args_ref{'sig'});
327: }
328:
329: if ($tag eq 'formularesponse') {
330: if ($$args_ref{'samples'}) {
331: $$args_ref{'type'}='fml';
332: } else {
333: $$args_ref{'type'}='math';
334: }
335: } elsif ($tag eq 'numericalresponse') {
336: $$args_ref{'type'}='float';
337: }
338:
339: &add_in_tag_answer($parstack,$safeeval);
340:
341: my (@final_awards,@final_msgs,@names);
342: foreach my $name (keys(%answer)) {
343: &Apache::lonxml::debug(" doing $name with ".join(':',@{ $answer{$name}{'answers'} }));
344:
345: ${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=dclone($answer{$name});
346: &setup_capa_response($args_ref,$response);
347: use Time::HiRes;
348: my $t0 = [Time::HiRes::gettimeofday()];
349: my ($result,@msgs) =
350: &Apache::run::run("&caparesponse_check_list()",$safeeval);
351: &Apache::lonxml::debug("checking $name $result with $response took ".&Time::HiRes::tv_interval($t0));
352: &Apache::lonxml::debug('msgs are '.join(':',@msgs));
353: my ($awards)=split(/:/,$result);
354: my @awards= split(/,/,$awards);
355: my ($ad, $msg) = &Apache::inputtags::finalizeawards(\@awards,\@msgs);
356: push(@final_awards,$ad);
357: push(@final_msgs,$msg);
358: push(@names,$name);
359: }
360: my ($ad, $msg, $name) = &Apache::inputtags::finalizeawards(\@final_awards,
361: \@final_msgs,
362: \@names,1);
363: &Apache::lonxml::debug(" name of picked award is $name from ".join(', ',@names));
364: return($ad,$msg, $name);
365: }
366:
367: sub add_in_tag_answer {
368: my ($parstack,$safeeval,$response_level) = @_;
369: my @answer=&Apache::lonxml::get_param_var('answer',$parstack,$safeeval,
370: $response_level);
371: &Apache::lonxml::debug('answer is'.join(':',@answer));
372: if (@answer && defined($answer[0])) {
373: $answer{$tag_internal_answer_name}= {'type' => 'ordered',
374: 'answers' => [\@answer] };
375: }
376: }
377:
378: sub capa_formula_fix {
379: my ($expression)=@_;
380: return &Apache::response::implicit_multiplication($expression);
381: }
382:
383: sub end_numericalresponse {
384: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
385: my $increment=1;
386: my $result = '';
387: if (!$Apache::lonxml::default_homework_loaded) {
388: &Apache::lonxml::default_homework_load($safeeval);
389: }
390: my $partid = $Apache::inputtags::part;
391: my $id = $Apache::inputtags::response[-1];
392: my $tag;
393: my $safehole = new Safe::Hole;
394: $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
395: $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
396: $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,'&maxima_cas_formula_fix');
397: $safehole->wrap(\&capa_formula_fix,$safeeval,'&capa_formula_fix');
398:
399: if (scalar(@$tagstack)) { $tag=$$tagstack[-1]; }
400: if ( $target eq 'grade' && &Apache::response::submitted() ) {
401: &Apache::response::setup_params($tag,$safeeval);
402: if ($Apache::lonhomework::type eq 'exam' &&
403: (($tag eq 'formularesponse') || ($tag eq 'mathresponse'))) {
404: $increment=&Apache::response::scored_response($partid,$id);
405: } else {
406: my $response = &Apache::response::getresponse();
407: if ( $response =~ /[^\s]/) {
408: my %previous = &Apache::response::check_for_previous($response,$partid,$id);
409: &Apache::lonxml::debug("submitted a $response<br>\n");
410: &Apache::lonxml::debug($$parstack[-1] . "\n<br>");
411:
412: if ( &Apache::response::submitted('scantron')) {
413: my ($values,$display)=&make_numerical_bubbles($partid,$id,
414: $target,$parstack,$safeeval);
415: $response=$values->[$response];
416: }
417: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
418: my ($ad,$msg,$name)=&check_submission($response,$partid,$id,
419: $tag,$parstack,
420: $safeeval);
421:
422: &Apache::lonxml::debug('ad is'.$ad);
423: if ($ad eq 'SIG_FAIL') {
424: my ($sig_u,$sig_l)=
425: &get_sigrange($Apache::inputtags::params{'sig'});
426: $msg=join(':',$msg,$sig_l,$sig_u);
427: &Apache::lonxml::debug("sigs bad $sig_u $sig_l ".
428: $Apache::inputtags::params{'sig'});
429: }
430: &Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
431: if ($Apache::lonhomework::type eq 'survey' &&
432: ($ad eq 'INCORRECT' || $ad eq 'APPROX_ANS' ||
433: $ad eq 'EXACT_ANS')) {
434: $ad='SUBMITTED';
435: }
436: &Apache::response::handle_previous(\%previous,$ad);
437: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad;
438: $Apache::lonhomework::results{"resource.$partid.$id.awardmsg"}=$msg;
439: $Apache::lonhomework::results{"resource.$partid.$id.answername"}=$name;
440: $result='';
441: }
442: }
443: } elsif ($target eq 'web' || $target eq 'tex') {
444: &check_for_answer_errors($parstack,$safeeval);
445: my $award = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
446: my $status = $Apache::inputtags::status['-1'];
447: if ($Apache::lonhomework::type eq 'exam') {
448: # FIXME support multi dimensional numerical problems
449: # in exam bubbles
450: my ($bubble_values,$bubble_display)=
451: &make_numerical_bubbles($partid,$id,$target,$parstack,
452: $safeeval);
453: my $number_of_bubbles = scalar(@{ $bubble_values });
454: my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
455: $safeeval);
456: my @alphabet=('A'..'Z');
457: if ($target eq 'web') {
458: if ($tag eq 'numericalresponse') {
459: if ($unit=~/\S/) {$result.=' (in '.$unit.')<br /><br />';}
460: $result.= '<table border="1"><tr>';
461: my $previous=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.$id.submission"};
462: for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
463: my $checked='';
464: if ($previous eq $bubble_values->[$ind]) {
465: $checked=" checked='on' ";
466: }
467: $result.='<td><input type="radio" name="HWVAL_'.$id.
468: '" value="'.$bubble_values->[$ind].'" '.$checked
469: .' /><b>'.$alphabet[$ind].'</b>: '.
470: $bubble_display->[$ind].'</td>';
471: }
472: $result.='</tr></table>';
473: }
474: } elsif ($target eq 'tex') {
475: if ((defined $unit) and ($unit=~/\S/) and ($Apache::lonhomework::type eq 'exam')) {
476: $result.=' \textit{(in} \verb|'.$unit.'|\textit{)} ';
477: }
478: if ($tag eq 'numericalresponse') {
479: my ($celllength,$number_of_tables,@table_range)=
480: &get_table_sizes($number_of_bubbles,$bubble_display);
481: my $j=0;
482: my $cou=0;
483: $result.='\vskip -1 mm \noindent \begin{enumerate}\item[\textbf{'.$Apache::lonxml::counter.'}.]';
484: for (my $i=0;$i<$number_of_tables;$i++) {
485: $result.='\vskip -1 mm \noindent \setlength{\tabcolsep}{2 mm}\begin{tabular}{';
486: for (my $ind=0;$ind<$table_range[$j];$ind++) {
487: $result.='p{3 mm}p{'.$celllength.' mm}';
488: }
489: $result.='}';
490: for (my $ind=$cou;$ind<$cou+$table_range[$j];$ind++) {
491: $result.='\hskip -4 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$ & \hskip -3 mm {\small '.$bubble_display->[$ind].'} ';
492: if ($ind != $cou+$table_range[$j]-1) {$result.=' & ';}
493: }
494: $cou += $table_range[$j];
495: $j++;
496: $result.='\\\\\end{tabular}\vskip 0 mm ';
497: }
498: $result.='\end{enumerate}';
499: } else {
500: $increment = &Apache::response::repetition();
501: }
502: }
503: }
504: } elsif ($target eq 'edit') {
505: $result.='</td></tr>'.&Apache::edit::end_table;
506: } elsif ($target eq 'answer' || $target eq 'analyze') {
507: my $part_id="$partid.$id";
508: if ($target eq 'analyze') {
509: push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
510: $Apache::lonhomework::analyze{"$part_id.type"} = $tag;
511: my (@incorrect)=&Apache::lonxml::get_param_var('incorrect',$parstack,$safeeval);
512: if ($#incorrect eq 0) { @incorrect=(split(/,/,$incorrect[0])); }
513: push (@{ $Apache::lonhomework::analyze{"$part_id.incorrect"} }, @incorrect);
514: &Apache::response::check_if_computed($token,$parstack,
515: $safeeval,'answer');
516: }
517: if (scalar(@$tagstack)) {
518: &Apache::response::setup_params($tag,$safeeval);
519: }
520: &add_in_tag_answer($parstack,$safeeval);
521: my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,$safeeval);
522:
523: my $unit=&Apache::lonxml::get_param_var('unit',$parstack,$safeeval);
524:
525: if ($target eq 'answer') {
526: $result.=&Apache::response::answer_header($tag,undef,
527: scalar(keys(%answer)));
528: if ($tag eq 'numericalresponse'
529: && $Apache::lonhomework::type eq 'exam') {
530: my ($bubble_values,undef,$correct) = &make_numerical_bubbles($partid,
531: $id,$target,$parstack,$safeeval);
532: $result.=&Apache::response::answer_part($tag,$correct);
533: }
534: }
535: foreach my $name (sort(keys(%answer))) {
536: my @answers = @{ $answer{$name}{'answers'} };
537: if ($target eq 'analyze') {
538: foreach my $info ('answer','ans_high','ans_low','format') {
539: $Apache::lonhomework::analyze{"$part_id.$info"}{$name}=[];
540: }
541: }
542: my ($sigline,$tolline);
543: if ($name ne $tag_internal_answer_name
544: || scalar(keys(%answer)) > 1) {
545: $result.=&Apache::response::answer_part($tag,$name);
546: }
547: for(my $i=0;$i<=$#answers;$i++) {
548: my $ans=$answers[$i];
549: my $fmt=$formats[0];
550: if (@formats && $#formats) {$fmt=$formats[$i];}
551: my ($sighigh,$siglow);
552: if ($Apache::inputtags::params{'sig'}) {
553: ($sighigh,$siglow)=&get_sigrange($Apache::inputtags::params{'sig'});
554: }
555: my @vector;
556: if (ref($ans)) {
557: @vector = @{ $ans };
558: } else {
559: @vector = ($ans);
560: }
561: my @all_answer_info;
562: foreach my $element (@vector) {
563: my ($high,$low);
564: if ($Apache::inputtags::params{'tol'}) {
565: ($high,$low)=&get_tolrange($element,$Apache::inputtags::params{'tol'});
566: }
567: if ($target eq 'answer') {
568: if ($fmt && $tag eq 'numericalresponse') {
569: $fmt=~s/e/E/g;
570: if ($unit=~/\$/) { $fmt="\$".$fmt; $unit=~s/\$//g; }
571: if ($unit=~/\,/) { $fmt="\,".$fmt; $unit=~s/\,//g; }
572: $element = &format_number($element,$fmt,$target,$safeeval);
573: #if ($high) {
574: # $high=&format_number($high,$fmt,$target,$safeeval);
575: # $low =&format_number($low,$fmt,$target,$safeeval);
576: #}
577: }
578: if ($high && $tag eq 'numericalresponse') {
579: $element.=' ['.$low.','.$high.']';
580: $tolline .= "[$low, $high]";
581: }
582: if (defined($sighigh) && $tag eq 'numericalresponse') {
583: if ($env{'form.answer_output_mode'} eq 'tex') {
584: $element.= " Sig $siglow - $sighigh";
585: } else {
586: $element.= " Sig <i>$siglow - $sighigh</i>";
587: $sigline .= "[$siglow, $sighigh]";
588: }
589: }
590: push(@all_answer_info,$element);
591:
592: } elsif ($target eq 'analyze') {
593: push (@{ $Apache::lonhomework::analyze{"$part_id.answer"}{$name}[$i] }, $element);
594: if ($high) {
595: push (@{ $Apache::lonhomework::analyze{"$part_id.ans_high"}{$name}[$i] }, $high);
596: push (@{ $Apache::lonhomework::analyze{"$part_id.ans_low"}{$name}[$i] }, $low);
597: }
598: if ($fmt) {
599: push (@{ $Apache::lonhomework::analyze{"$part_id.format"}{$name}[$i] }, $fmt);
600: }
601: }
602: }
603: if ($target eq 'answer') {
604: $result.= &Apache::response::answer_part($tag,join(', ',@all_answer_info));
605: }
606: }
607:
608: my @fmt_ans;
609: for(my $i=0;$i<=$#answers;$i++) {
610: my $ans=$answers[$i];
611: my $fmt=$formats[0];
612: if (@formats && $#formats) {$fmt=$formats[$i];}
613: foreach my $element (@$ans) {
614: if ($fmt && $tag eq 'numericalresponse') {
615: $fmt=~s/e/E/g;
616: if ($unit=~/\$/) { $fmt="\$".$fmt; $unit=~s/\$//g; }
617: if ($unit=~/\,/) { $fmt="\,".$fmt; $unit=~s/\,//g; }
618: $element = &format_number($element,$fmt,$target,
619: $safeeval);
620: if ($fmt=~/\$/ && $unit!~/\$/) { $element=~s/\$//; }
621: }
622: }
623: push(@fmt_ans,join(',',@$ans));
624: }
625: my $response=\@fmt_ans;
626:
627: my $hideunit=&Apache::lonnet::EXT('resource.'.$partid.'_'.
628: $id.'.turnoffunit');
629: if ($unit ne '' &&
630: ! ($Apache::lonhomework::type eq 'exam' ||
631: lc($hideunit) eq "yes") ) {
632: my $cleanunit=$unit;
633: $cleanunit=~s/\$\,//g;
634: foreach my $ans (@fmt_ans) {
635: $ans.=" $cleanunit";
636: }
637: }
638: my ($ad,$msg)=&check_submission($response,$partid,$id,$tag,
639: $parstack,$safeeval);
640: if ($ad ne 'EXACT_ANS' && $ad ne 'APPROX_ANS') {
641: my $error;
642: if ($tag eq 'formularesponse') {
643: $error=&mt('Computer\'s answer is incorrect ("[_1]").',join(', ',@$response));
644: } else {
645: # answer failed check if it is sig figs that is failing
646: my ($ad,$msg)=&check_submission($response,$partid,$id,
647: $tag,$parstack,
648: $safeeval,1);
649: if ($sigline ne '') {
650: $error=&mt('Computer\'s answer is incorrect ("[_1]"). It is likely that the tolerance range [_2] or significant figures [_3] need to be adjusted.',join(', ',@$response),$tolline,$sigline);
651: } else {
652: $error=&mt('Computer\'s answer is incorrect ("[_1]"). It is likely that the tolerance range [_2] needs to be adjusted.',join(', ',@$response),$tolline);
653: }
654: }
655: if ($ad ne 'EXACT_ANS' && $ad ne 'APPROX_ANS') {
656: &Apache::lonxml::error($error);
657: } else {
658: &Apache::lonxml::warning($error);
659: }
660: }
661:
662: if (defined($unit) and ($unit ne '') and
663: $tag eq 'numericalresponse') {
664: if ($target eq 'answer') {
665: if ($env{'form.answer_output_mode'} eq 'tex') {
666: $result.=&Apache::response::answer_part($tag,
667: " Unit: $unit ");
668: } else {
669: $result.=&Apache::response::answer_part($tag,
670: "Unit: <b>$unit</b>");
671: }
672: } elsif ($target eq 'analyze') {
673: push (@{ $Apache::lonhomework::analyze{"$part_id.unit"} }, $unit);
674: }
675: }
676: if ($tag eq 'formularesponse' && $target eq 'answer') {
677: my $samples=&Apache::lonxml::get_param('samples',$parstack,$safeeval);
678: $result.=&Apache::response::answer_part($tag,$samples);
679: }
680: $result.=&Apache::response::next_answer($tag,$name);
681: }
682: if ($target eq 'answer') {
683: $result.=&Apache::response::answer_footer($tag);
684: }
685: }
686: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
687: $target eq 'tex' || $target eq 'analyze') {
688: &Apache::lonxml::increment_counter($increment);
689: }
690: &Apache::response::end_response();
691: return $result;
692: }
693:
694: sub check_for_answer_errors {
695: my ($parstack,$safeeval) = @_;
696: &add_in_tag_answer($parstack,$safeeval);
697: my %counts;
698: foreach my $name (keys(%answer)) {
699: push(@{$counts{scalar(@{$answer{$name}{'answers'}})}},$name);
700: }
701: if (scalar(keys(%counts)) > 1) {
702: my $counts = join(' ',map {
703: my $count = $_;
704: &mt("Answers [_1] had [_2] components.",
705: '<tt>'.join(', ',@{$counts{$count}}).'</tt>',
706: $count);
707: } (sort(keys(%counts))));
708: &Apache::lonxml::error(&mt("All answers must have the same number of components. Varying numbers of answers were seen. ").$counts);
709: }
710: use Data::Dumper;
711: &Apache::lonxml::debug("count dump is ".&Dumper(\%counts));
712: my $expected_number_of_inputs = (keys(%counts))[0];
713: if ( $expected_number_of_inputs != scalar(@Apache::inputtags::inputlist)) {
714: &Apache::lonxml::error(&mt("Expected [_1] input fields, but there were only [_2] seen.",
715: $expected_number_of_inputs,
716: scalar(@Apache::inputtags::inputlist)));
717: }
718: }
719:
720: sub get_table_sizes {
721: my ($number_of_bubbles,$rbubble_values)=@_;
722: my $scale=2; #mm for one digit
723: my $cell_width=0;
724: foreach my $member (@$rbubble_values) {
725: my $cell_width_real=0;
726: if ($member=~/(\+|-)?(\d*)\.?(\d*)\s*\$?\\times\s*10\^{(\+|-)?(\d+)}\$?/) {
727: $cell_width_real=(length($2)+length($3)+length($5)+7)*$scale;
728: } elsif ($member=~/(\d*)\.?(\d*)(E|e)(\+|-)?(\d*)/) {
729: $cell_width_real=(length($1)+length($2)+length($5)+9)*$scale;
730: } elsif ($member=~/(\d*)\.(\d*)/) {
731: $cell_width_real=(length($1)+length($2)+3)*$scale;
732: } else {
733: $cell_width_real=(length($member)+1)*$scale*0.9;
734: }
735: if ($cell_width_real>$cell_width) {$cell_width=$cell_width_real;}
736: }
737: $cell_width+=8;
738: my $textwidth;
739: if ($env{'form.textwidth'} ne '') {
740: $env{'form.textwidth'}=~/(\d*)\.?(\d*)/;
741: $textwidth=$1.'.'.$2;
742: } else {
743: $env{'form.textwidth'}=~/(\d+)\.?(\d*)/;
744: $textwidth=$1.'.'.$2;
745: }
746: my $bubbles_per_line=int($textwidth/$cell_width);
747: if ($bubbles_per_line > $number_of_bubbles) {
748: $bubbles_per_line=$number_of_bubbles;
749: }elsif (($bubbles_per_line > $number_of_bubbles/2) && ($number_of_bubbles % 2==0)) {$bubbles_per_line=$number_of_bubbles/2;}
750: my $number_of_tables = int($number_of_bubbles/$bubbles_per_line);
751: my @table_range = ();
752: for (my $i=0;$i<$number_of_tables;$i++) {push @table_range,$bubbles_per_line;}
753: if ($number_of_bubbles % $bubbles_per_line) {
754: $number_of_tables++;
755: push @table_range,($number_of_bubbles % $bubbles_per_line);
756: }
757: $cell_width-=8;
758: $cell_width=$cell_width*3/4;
759: return ($cell_width,$number_of_tables,@table_range);
760: }
761:
762: sub format_number {
763: my ($number,$format,$target,$safeeval)=@_;
764: my $ans;
765: if ($format eq '') {
766: #What is the number? (integer,decimal,floating point)
767: if ($number=~/^(\d*\.?\d*)(E|e)[+\-]?(\d*)$/) {
768: $format = '3e';
769: } elsif ($number=~/^(\d*)\.(\d*)$/) {
770: $format = '4f';
771: } elsif ($number=~/^(\d*)$/) {
772: $format = 'd';
773: }
774: }
775: if (!$Apache::lonxml::default_homework_loaded) {
776: &Apache::lonxml::default_homework_load($safeeval);
777: }
778: $ans=&Apache::run::run("&prettyprint(q\0$number\0,q\0$format\0,q\0$target\0)",$safeeval);
779: return $ans;
780: }
781:
782: sub make_numerical_bubbles {
783: my ($part,$id,$target,$parstack,$safeeval) =@_;
784:
785: my $number_of_bubbles =
786: &Apache::response::get_response_param($part.'_'.$id,'numbubbles',8);
787:
788: my ($format)=&Apache::lonxml::get_param_var('format',$parstack,$safeeval);
789: my $name = (exists($answer{$tag_internal_answer_name})
790: ? $tag_internal_answer_name
791: : (sort(keys(%answer)))[0]);
792:
793: if ( scalar(@{$answer{$name}{'answers'}}) > 1) {
794: &Apache::lonxml::error("Only answers with 1 component are supported in exam mode");
795: }
796: if (scalar(@{$answer{$name}{'answers'}[0]}) > 1) {
797: &Apache::lonxml::error("Vector answers are unsupported in exam mode.");
798: }
799:
800: my $answer = $answer{$name}{'answers'}[0][0];
801: my (@incorrect)=&Apache::lonxml::get_param_var('incorrect',$parstack,
802: $safeeval);
803: if ($#incorrect eq 0) { @incorrect=(split(/,/,$incorrect[0])); }
804:
805: my @bubble_values=();
806: my @alphabet=('A'..'Z');
807:
808: &Apache::lonxml::debug("answer is $answer incorrect is @incorrect");
809: my @oldseed=&Math::Random::random_get_seed();
810: if (@incorrect) {
811: &Apache::lonxml::debug("inside ".(scalar(@incorrect)+1 gt $number_of_bubbles));
812: if (defined($incorrect[0]) &&
813: scalar(@incorrect)+1 >= $number_of_bubbles) {
814: &Apache::lonxml::debug("inside ".(scalar(@incorrect)+1).":$number_of_bubbles");
815: &Apache::response::setrandomnumber();
816: my @rand_inc=&Math::Random::random_permutation(@incorrect);
817: @bubble_values=@rand_inc[0..($number_of_bubbles-2)];
818: @bubble_values=sort {$a <=> $b} (@bubble_values,$answer);
819: &Apache::lonxml::debug("Answer was :$answer: returning :".$#bubble_values.": which are :".join(':',@bubble_values));
820: &Math::Random::random_set_seed(@oldseed);
821:
822: my $correct;
823: for(my $i=0; $i<=$#bubble_values;$i++) {
824: if ($bubble_values[$i] eq $answer) {
825: $correct = $alphabet[$i];
826: last;
827: }
828: }
829:
830: if (defined($format) && $format ne '') {
831: my @bubble_display;
832: foreach my $value (@bubble_values) {
833: push(@bubble_display,
834: &format_number($value,$format,$target,$safeeval));
835: }
836: return (\@bubble_values,\@bubble_display,$correct);
837: } else {
838: return (\@bubble_values,\@bubble_values,$correct);
839: }
840: }
841: if (defined($incorrect[0]) &&
842: scalar(@incorrect)+1 < $number_of_bubbles) {
843: &Apache::lonxml::warning("Not enough incorrect answers were specified in the incorrect array, ignoring the specified incorrect answers and instead generating them (".join(',',@incorrect).").");
844: }
845: }
846: my @factors = (1.13,1.17,1.25,1.33,1.45); #default values of factors
847: my @powers = (1..$number_of_bubbles);
848: &Apache::response::setrandomnumber();
849: my $ind=&Math::Random::random_uniform_integer(1,0,$#powers);
850: my $power = $powers[$ind];
851: $ind=&Math::Random::random_uniform_integer(1,0,$#factors);
852: my $factor = $factors[$ind];
853: my @bubble_display;
854: for ($ind=0;$ind<$number_of_bubbles;$ind++) {
855: $bubble_values[$ind] = $answer*($factor**($power-$powers[$#powers-$ind]));
856: $bubble_display[$ind] = &format_number($bubble_values[$ind],
857: $format,$target,$safeeval);
858:
859: }
860: my $correct = $alphabet[$number_of_bubbles-$power];
861: &Math::Random::random_set_seed(@oldseed);
862: return (\@bubble_values,\@bubble_display,$correct);
863: }
864:
865: sub get_tolrange {
866: my ($ans,$tol)=@_;
867: my ($high,$low);
868: if ($tol =~ /%$/) {
869: chop($tol);
870: my $change=$ans*($tol/100.0);
871: $high=$ans+$change;
872: $low=$ans-$change;
873: } else {
874: $high=$ans+$tol;
875: $low=$ans-$tol;
876: }
877: return ($high,$low);
878: }
879:
880: sub get_sigrange {
881: my ($sig)=@_;
882: #&Apache::lonxml::debug("Got a sig of :$sig:");
883: my $courseid=$env{'request.course.id'};
884: if (lc($env{"course.$courseid.disablesigfigs"}) eq 'yes') {
885: return (15,0);
886: }
887: my $sig_lbound;
888: my $sig_ubound;
889: if ($sig eq '') {
890: $sig_lbound = 0; #SIG_LB_DEFAULT
891: $sig_ubound =15; #SIG_UB_DEFAULT
892: } else {
893: ($sig_lbound,$sig_ubound) = split(/,/,$sig);
894: if (!defined($sig_lbound)) {
895: $sig_lbound = 0; #SIG_LB_DEFAULT
896: $sig_ubound =15; #SIG_UB_DEFAULT
897: }
898: if (!defined($sig_ubound)) { $sig_ubound=$sig_lbound; }
899: }
900: if (($sig_ubound<$sig_lbound) ||
901: ($sig_lbound > 15) ||
902: ($sig =~/(\+|-)/ ) ) {
903: my $errormsg=&mt("Invalid Significant figures detected")." ($sig)";
904: if ($env{'request.state'} eq 'construct') {
905: $errormsg.=
906: &Apache::loncommon::help_open_topic('Significant_Figures');
907: }
908: &Apache::lonxml::error($errormsg);
909: }
910: return ($sig_ubound,$sig_lbound);
911: }
912:
913: sub start_stringresponse {
914: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
915: my $result;
916: my $id = &Apache::response::start_response($parstack,$safeeval);
917: if ($target eq 'meta') {
918: $result=&Apache::response::meta_package_write('stringresponse');
919: } elsif ($target eq 'edit') {
920: $result.=&Apache::edit::tag_start($target,$token);
921: $result.=&Apache::edit::text_arg('Answer:','answer',$token);
922: $result.=&Apache::edit::select_arg('Type:','type',
923: [['cs','Case Sensitive'],['ci','Case Insensitive'],
924: ['mc','Case Insensitive, Any Order'],
925: ['re','Regular Expression']],$token);
926: $result.=&Apache::edit::text_arg('String to display for answer:',
927: 'answerdisplay',$token);
928: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
929: } elsif ($target eq 'modified') {
930: my $constructtag;
931: $constructtag=&Apache::edit::get_new_args($token,$parstack,
932: $safeeval,'answer',
933: 'type','answerdisplay');
934: if ($constructtag) {
935: $result = &Apache::edit::rebuild_tag($token);
936: $result.=&Apache::edit::handle_insert();
937: }
938: } elsif ($target eq 'web') {
939: if ( &Apache::response::show_answer() ) {
940: my $answer=
941: &Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval);
942: if (!defined $answer || $answer eq '') {
943: $answer=
944: &Apache::lonxml::get_param('answer',$parstack,$safeeval);
945: }
946: $Apache::inputtags::answertxt{$id}=[$answer];
947: }
948: } elsif ($target eq 'answer' || $target eq 'grade') {
949: &Apache::response::reset_params();
950: }
951: return $result;
952: }
953:
954: sub end_stringresponse {
955: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
956:
957: my $result = '';
958: my $part=$Apache::inputtags::part;
959: my $id=$Apache::inputtags::response[-1];
960: my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
961: my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval);
962: my $answerdisplay=&Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval);
963: &Apache::lonxml::debug("current $answer ".$token->[2]);
964: if (!$Apache::lonxml::default_homework_loaded) {
965: &Apache::lonxml::default_homework_load($safeeval);
966: }
967: if ( $target eq 'grade' && &Apache::response::submitted() ) {
968: &Apache::response::setup_params('stringresponse',$safeeval);
969: $safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
970: if ($Apache::lonhomework::type eq 'exam' ||
971: &Apache::response::submitted('scantron')) {
972: &Apache::response::scored_response($part,$id);
973:
974: } else {
975: my $response = &Apache::response::getresponse();
976: if ( $response =~ /[^\s]/) {
977: my %previous = &Apache::response::check_for_previous($response,
978: $part,$id);
979: &Apache::lonxml::debug("submitted a $response<br>\n");
980: &Apache::lonxml::debug($$parstack[-1] . "\n<br>");
981: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
982: $response;
983: my ($ad,$msg);
984: if ($type eq 're' ) {
985: # if the RE wasn't in a var it likely got munged,
986: # thus grab it from the var directly
987: # my $testans=$token->[2]->{'answer'};
988: # if ($testans !~ m/^\s*\$/) {
989: # $answer=$token->[2]->{'answer'};
990: # }
991: ${$safeeval->varglob('LONCAPA::response')}=$response;
992: $result = &Apache::run::run('if ($LONCAPA::response=~m'.$answer.') { return 1; } else { return 0; }',$safeeval);
993: &Apache::lonxml::debug("current $response");
994: &Apache::lonxml::debug("current $answer");
995: $ad = ($result) ? 'APPROX_ANS' : 'INCORRECT';
996: } else {
997: my @args = ('type');
998: my $args_ref = &setup_capa_args($safeeval,$parstack,
999: \@args,$response);
1000:
1001: &add_in_tag_answer($parstack,$safeeval);
1002: my (@final_awards,@final_msgs,@names);
1003: foreach my $name (keys(%answer)) {
1004: &Apache::lonxml::debug(" doing $name with ".join(':',@{ $answer{$name}{'answers'} }));
1005: ${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=dclone($answer{$name});
1006: my ($result, @msgs)=&Apache::run::run("&caparesponse_check_list()",$safeeval);
1007: &Apache::lonxml::debug('msgs are'.join(':',@msgs));
1008: my ($awards)=split(/:/,$result);
1009: my (@awards) = split(/,/,$awards);
1010: ($ad,$msg) =
1011: &Apache::inputtags::finalizeawards(\@awards,\@msgs);
1012: push(@final_awards,$ad);
1013: push(@final_msgs,$msg);
1014: push(@names,$name);
1015: &Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
1016: }
1017: my ($ad, $msg, $name) =
1018: &Apache::inputtags::finalizeawards(\@final_awards,
1019: \@final_msgs,
1020: \@names,1);
1021: }
1022: if ($Apache::lonhomework::type eq 'survey' &&
1023: ($ad eq 'INCORRECT' || $ad eq 'APPROX_ANS' ||
1024: $ad eq 'EXACT_ANS')) {
1025: $ad='SUBMITTED';
1026: }
1027: &Apache::response::handle_previous(\%previous,$ad);
1028: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
1029: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=$msg;
1030: }
1031: }
1032: } elsif ($target eq 'answer' || $target eq 'analyze') {
1033: &add_in_tag_answer($parstack,$safeeval);
1034: if ($target eq 'analyze') {
1035: push (@{ $Apache::lonhomework::analyze{"parts"} },"$part.$id");
1036: $Apache::lonhomework::analyze{"$part.$id.type"} = 'stringresponse';
1037: &Apache::response::check_if_computed($token,$parstack,$safeeval,
1038: 'answer');
1039: }
1040: &Apache::response::setup_params('stringresponse',$safeeval);
1041: if ($target eq 'answer') {
1042: $result.=&Apache::response::answer_header('stringresponse');
1043: }
1044: foreach my $name (keys(%answer)) {
1045: my @answers = @{ $answer{$name}{'answers'} };
1046: for (my $i=0;$i<=$#answers;$i++) {
1047: my $answer_part = $answers[$i];
1048: foreach my $element (@{$answer_part}) {
1049: if ($target eq 'answer') {
1050: $result.=&Apache::response::answer_part('stringresponse',
1051: $element);
1052: } elsif ($target eq 'analyze') {
1053: push (@{ $Apache::lonhomework::analyze{"$part.$id.answer"}{$name}[$i] },
1054: $element);
1055: }
1056: }
1057: if ($target eq 'answer' && $type eq 're') {
1058: $result.=&Apache::response::answer_part('stringresponse',
1059: $answerdisplay);
1060: }
1061: }
1062: }
1063: my $string='Case Insensitive';
1064: if ($type eq 'mc') {
1065: $string='Multiple Choice';
1066: } elsif ($type eq 'cs') {
1067: $string='Case Sensitive';
1068: } elsif ($type eq 'ci') {
1069: $string='Case Insensitive';
1070: } elsif ($type eq 're') {
1071: $string='Regular Expression';
1072: }
1073: if ($target eq 'answer') {
1074: if ($env{'form.answer_output_mode'} eq 'tex') {
1075: $result.=&Apache::response::answer_part('stringresponse',
1076: "$string");
1077: } else {
1078: $result.=&Apache::response::answer_part('stringresponse',
1079: "<b>$string</b>");
1080: }
1081: } elsif ($target eq 'analyze') {
1082: push (@{$Apache::lonhomework::analyze{"$part.$id.str_type"}},
1083: $type);
1084: }
1085: if ($target eq 'answer') {
1086: $result.=&Apache::response::answer_footer('stringresponse');
1087: }
1088: } elsif ($target eq 'edit') {
1089: $result.='</td></tr>'.&Apache::edit::end_table;
1090: }
1091: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
1092: $target eq 'tex' || $target eq 'analyze') {
1093: &Apache::lonxml::increment_counter(&Apache::response::repetition());
1094: }
1095: &Apache::response::end_response;
1096: return $result;
1097: }
1098:
1099: sub start_formularesponse {
1100: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1101: my $result;
1102: if ($target eq 'meta') {
1103: &Apache::response::start_response($parstack,$safeeval);
1104: $result=&Apache::response::meta_package_write('formularesponse');
1105: &Apache::response::end_response();
1106: } else {
1107: $result.=&start_numericalresponse(@_);
1108: }
1109: return $result;
1110: }
1111:
1112: sub end_formularesponse {
1113: return end_numericalresponse(@_);
1114: }
1115:
1116: 1;
1117: __END__
1118:
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