1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.244.2.1 2018/09/02 16:51:51 raeburn 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: =pod
30:
31: =head1 NAME
32:
33: Apache::response.pm
34:
35: =head1 SYNOPSIS
36:
37: This is part of the LearningOnline Network with CAPA project
38: described at http://www.lon-capa.org.
39:
40:
41: =head1 NOTABLE SUBROUTINES
42:
43: =over
44:
45: =item
46:
47: =back
48:
49: =cut
50:
51:
52: package Apache::response;
53: use strict;
54: use Apache::lonlocal;
55: use Apache::lonnet;
56: use Apache::inputtags();
57: use Apache::lonmaxima();
58: use Apache::lonr();
59: use Apache::lontexconvert();
60:
61: BEGIN {
62: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
63: }
64:
65: sub start_response {
66: my ($parstack,$safeeval)=@_;
67: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
68: if ($#Apache::inputtags::import > -1) {
69: &Apache::lonxml::debug("Turning :$id: into");
70: $id = join('_',@Apache::inputtags::import).'_'.$id;
71: &Apache::lonxml::debug("New :$id:");
72: }
73: push (@Apache::inputtags::response,$id);
74: push (@Apache::inputtags::responselist,$id);
75: @Apache::inputtags::inputlist=();
76: if ($Apache::inputtags::part eq '' &&
77: !$Apache::lonhomework::ignore_response_errors) {
78: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
79: }
80: if ($Apache::inputtags::response_with_no_part &&
81: $Apache::inputtags::part ne '0') {
82: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
83: }
84: if ($Apache::inputtags::part eq '0') {
85: $Apache::inputtags::response_with_no_part=1;
86: }
87: return $id;
88: }
89:
90: sub end_response {
91: #pop @Apache::inputtags::response;
92: @Apache::inputtags::inputlist=();
93: return '';
94: }
95:
96: sub start_hintresponse {
97: my ($parstack,$safeeval)=@_;
98: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
99: push (@Apache::inputtags::hint,$id);
100: push (@Apache::inputtags::hintlist,$id);
101: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
102: return $id;
103: }
104:
105: sub end_hintresponse {
106: pop @Apache::inputtags::hint;
107: if (defined($Apache::inputtags::paramstack[-1])) {
108: %Apache::inputtags::params=
109: @{ pop(@Apache::inputtags::paramstack) };
110: }
111: return '';
112: }
113:
114: my @randomseeds;
115: sub pushrandomnumber {
116: my $rand_alg=&Apache::lonnet::get_rand_alg();
117: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
118: $rand_alg eq '64bit2') {
119: # do nothing
120: } else {
121: my @seed=&Math::Random::random_get_seed();
122: push(@randomseeds,\@seed);
123: }
124: &Apache::response::setrandomnumber(@_);
125: }
126: sub poprandomnumber {
127: my $rand_alg=&Apache::lonnet::get_rand_alg();
128: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
129: $rand_alg eq '64bit2') {
130: return;
131: }
132: my $seed=pop(@randomseeds);
133: if ($seed) {
134: &Math::Random::random_set_seed(@$seed);
135: } else {
136: &Apache::lonxml::error("Unable to restore random algorithm.");
137: }
138: }
139:
140: sub setrandomnumber {
141: my ($ignore_id2,$target,$rndseed) = @_;
142: if (!defined($rndseed)) {
143: $rndseed=&Apache::structuretags::setup_rndseed(undef,$target);
144: }
145: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
146: &Apache::lonxml::debug("randseed $rndseed");
147: # $rndseed=unpack("%32i",$rndseed);
148: my $rand_alg=&Apache::lonnet::get_rand_alg();
149: my ($rndmod,$rndmod2);
150:
151: my ($id1,$id2,$shift_amt);
152: if ($Apache::lonhomework::parsing_a_problem) {
153: $id1=$Apache::inputtags::part;
154: if (defined($Apache::inputtags::response[-1])) {
155: $id2=$Apache::inputtags::response[-1];
156: }
157: $shift_amt=scalar(@Apache::inputtags::responselist);
158: } elsif ($Apache::lonhomework::parsing_a_task) {
159: $id1=&Apache::bridgetask::get_dim_id();
160: if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
161: $id2=$Apache::bridgetask::instance{$id1}[-1];
162: $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
163: } else {
164: $shift_amt=0;
165: }
166: }
167: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
168: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
169: $rand_alg eq '64bit2') {
170: $rndmod=(&Apache::lonnet::numval($id1) << 10);
171: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
172: } elsif ($rand_alg eq '64bit3') {
173: $rndmod=(&Apache::lonnet::numval2($id1) << 10);
174: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
175: } elsif ($rand_alg eq '64bit4') {
176: my $shift=(4*$shift_amt)%30;
177: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
178: if (defined($id2)) {
179: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
180: }
181: } else {
182: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
183: }
184: if ($rndseed =~/([,:])/) {
185: my $char=$1;
186: use integer;
187: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
188: $num1+=$rndmod;
189: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
190: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
191: $rndseed=$num1.$char.$num2;
192: } else {
193: $rndseed+=$rndmod;
194: if($Apache::lonnet::_64bit) {
195: use integer;
196: $rndseed=(($rndseed<<32)>>32);
197: }
198: }
199: &Apache::lonxml::debug("randseed $rndmod $rndseed");
200: &Apache::lonnet::setup_random_from_rndseed($rndseed);
201: return '';
202: }
203:
204: sub meta_parameter_write {
205: my ($name,$type,$default,$display)=@_;
206: my $partref=$Apache::inputtags::part;
207: my $result='<parameter part="'.$Apache::inputtags::part.'"';
208: if (defined($Apache::inputtags::response[-1])) {
209: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
210: $partref.='_'.$Apache::inputtags::response[-1];
211: }
212: $result.= ' name="'.$name.'"'.
213: ' type="'.$type.'"'.
214: (defined($default)?' default="'.$default.'"':'').
215: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
216: .'></parameter>'
217: ."\n";
218: return $result;
219: }
220:
221: sub meta_package_write {
222: my $name=shift;
223: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
224: if(defined($Apache::inputtags::response[-1])) {
225: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
226: }
227: $result.=' package="'.$name.'"></parameter>'."\n";
228: return $result;
229: }
230:
231: sub meta_stores_write {
232: my ($name,$type,$display)=@_;
233: my $partref=$Apache::inputtags::part;
234: my $result = '<stores part="'.$Apache::inputtags::part.'"';
235: if (defined($Apache::inputtags::response[-1])) {
236: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
237: $partref.='_'.$Apache::inputtags::response[-1];
238: }
239: $result.= ' name="'.$name.'"'.
240: ' type="'.$type.'"'.
241: ' display="'.$display.' [Part: '.$partref.']"'.
242: "></stores>\n";
243: }
244:
245: =pod
246:
247: =item mandatory_part_meta()
248:
249: Autogenerate metadata for mandatory
250: input (from RAT or lonparmset) and
251: output (to lonspreadsheet)
252: of each part
253:
254: Note: responseid-specific data 'submission' and 'awarddetail'
255: not available to spreadsheet -> skip here
256:
257: =cut
258:
259:
260: sub mandatory_part_meta {
261: return &meta_package_write('part').
262: &meta_stores_write('solved','string','Problem Status').
263: &meta_stores_write('tries','int_zeropos','Number of Attempts').
264: &meta_stores_write('awarded','float','Partial Credit Factor');
265: }
266:
267: sub meta_part_order {
268: if (@Apache::inputtags::partlist) {
269: my @parts=@Apache::inputtags::partlist;
270: shift(@parts);
271: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
272: } else {
273: return '<partorder>0</partorder>'."\n";
274: }
275: }
276:
277: sub meta_response_order {
278: if (@Apache::inputtags::responselist) {
279: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
280: '</responseorder>'."\n";
281: }
282: }
283:
284: sub check_for_previous {
285: my ($curresponse,$partid,$id,$last,$type) = @_;
286: my %previous;
287: $previous{'used'} = 0;
288: my $questiontype = $Apache::lonhomework::type;
289: my $curr_rndseed = $env{'form.'.$partid.'.rndseed'};
290: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
291: if ($key =~ /resource\.\Q$partid\E\.\Q$id\E\.submission$/) {
292: if ( $last && $key =~ /^(\d+):/ ) {
293: next if ($1 >= $last);
294: }
295: &Apache::lonxml::debug("Trying $key");
296: my $pastresponse=$Apache::lonhomework::history{$key};
297: if ($pastresponse eq $curresponse) {
298: my $history;
299: if ( $key =~ /^(\d+):/ ) {
300: $history=$1;
301: next if ((($questiontype eq 'randomizetry') ||
302: ($Apache::lonhomework::history{"$history:resource.$partid.type"} eq 'randomizetry')) &&
303: ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
304: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
305: $previous{'last'}='0';
306: push(@{ $previous{'version'} },$history);
307: } else {
308: next if ((($questiontype eq 'randomizetry') ||
309: ($Apache::lonhomework::history{"resource.$partid.type"} eq 'randomizetry')) &&
310: ($curr_rndseed ne $Apache::lonhomework::history{"resource.$partid.rndseed"}));
311: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
312: $previous{'last'}='1';
313: }
314: $previous{'used'} = 1;
315: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
316: if ($previous{'award'} eq 'INTERNAL_ERROR') { $previous{'used'}=0; }
317: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
318: } elsif ($type eq 'ci') {
319: if (lc($pastresponse) eq lc($curresponse)) {
320: if ($key =~ /^(\d+):/) {
321: my $history = $1;
322: next if (($questiontype eq 'randomizetry') &&
323: ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
324: push (@{$previous{'versionci'}},$history);
325: $previous{'awardci'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
326: $previous{'usedci'} = 1;
327: }
328: }
329: }
330: }
331: }
332: &Apache::lonhomework::showhash(%previous);
333: return %previous;
334: }
335:
336: sub handle_previous {
337: my ($previous,$ad)=@_;
338: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
339: if ($$previous{'last'}) {
340: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
341: push(@Apache::inputtags::previous_version,$$previous{'version'});
342: } elsif (($Apache::lonhomework::type ne 'survey') &&
343: ($Apache::lonhomework::type ne 'surveycred') &&
344: ($Apache::lonhomework::type ne 'anonsurvey') &&
345: ($Apache::lonhomework::type ne 'anonsurveycred')) {
346: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
347: push(@Apache::inputtags::previous_version,$$previous{'version'});
348: }
349: }
350: }
351:
352: sub view_or_modify {
353: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
354: my $myself=0;
355: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
356: $myself=1;
357: }
358: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
359: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
360: if ($mgr) { return "M"; }
361: if ($vgr) { return "V"; }
362: if ($myself) { return "V"; }
363: return '';
364: }
365:
366: sub start_dataresponse {
367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
368: my $id = &Apache::response::start_response($parstack,$safeeval);
369: my $result;
370: if ($target eq 'web') {
371: $result = $token->[2]->{'display'}.':';
372: } elsif ($target eq 'meta') {
373: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
374: $token->[2]->{'type'},
375: $token->[2]->{'display'});
376: $result .= &Apache::response::meta_package_write('dataresponse');
377: }
378: return $result;
379: }
380:
381: sub end_dataresponse {
382: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
383: my $result;
384: if ( $target eq 'web' ) {
385: } elsif ($target eq 'grade' ) {
386: if ( defined $env{'form.submitted'}) {
387: my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
388: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
389: if ($allowed) {
390: &Apache::response::setup_params('dataresponse',$safeeval);
391: my $partid = $Apache::inputtags::part;
392: my $id = $Apache::inputtags::response['-1'];
393: my $response = $env{'form.HWVAL_'.$id};
394: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
395: if ( $response =~ /[^\s]/) {
396: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
397: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
398: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
399: }
400: } else {
401: $result=&mt('Not Permitted to change values');
402: }
403: }
404: }
405: &Apache::response::end_response;
406: return $result;
407: }
408:
409: sub start_customresponse {
410: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
411: my $id = &Apache::response::start_response($parstack,$safeeval);
412: push(@Apache::lonxml::namespace,'customresponse');
413: my $result;
414: @Apache::response::custom_answer=();
415: @Apache::response::custom_answer_type=();
416: &Apache::lonxml::register('Apache::response',('answer'));
417: if ($target eq 'web') {
418: if ( &Apache::response::show_answer() ) {
419: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
420: $safeeval);
421: $Apache::inputtags::answertxt{$id}=[$answer];
422: }
423: } elsif ($target eq 'edit') {
424: $result.=&Apache::edit::tag_start($target,$token);
425: $result.=&Apache::edit::text_arg('String to display for answer:',
426: 'answerdisplay',$token,'50');
427: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
428: } elsif ($target eq 'modified') {
429: my $constructtag;
430: $constructtag=&Apache::edit::get_new_args($token,$parstack,
431: $safeeval,'answerdisplay');
432: if ($constructtag) {
433: $result = &Apache::edit::rebuild_tag($token);
434: }
435: } elsif ($target eq 'answer' || $target eq 'grade') {
436: &Apache::response::reset_params();
437: } elsif ($target eq 'meta') {
438: $result .= &Apache::response::meta_package_write('customresponse');
439: }
440: return $result;
441: }
442:
443: sub end_customresponse {
444: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
445: my $result;
446: my $part=$Apache::inputtags::part;
447: my $id=$Apache::inputtags::response[-1];
448: if ( $target eq 'grade' && &Apache::response::submitted() ) {
449: my $response = &Apache::response::getresponse();
450: if ($Apache::lonhomework::type eq 'exam' ||
451: &Apache::response::submitted('scantron')) {
452: &Apache::response::scored_response($part,$id);
453: } elsif ( $response =~ /[^\s]/ &&
454: $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
455: if (!$Apache::lonxml::default_homework_loaded) {
456: &Apache::lonxml::default_homework_load($safeeval);
457: }
458: my %previous = &Apache::response::check_for_previous($response,
459: $part,$id);
460: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
461: $response;
462: my $error;
463: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
464: $response;
465:
466: my ($award,$score) = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
467: if (!&Apache::inputtags::valid_award($award)) {
468: $error = $award;
469: $award = 'ERROR';
470: }
471: if (($award eq 'INCORRECT' || $award eq 'APPROX_ANS' ||
472: $award eq 'EXACT_ANS')) {
473: if ($Apache::lonhomework::type eq 'survey') {
474: $award='SUBMITTED';
475: } elsif ($Apache::lonhomework::type eq 'surveycred') {
476: $award='SUBMITTED_CREDIT';
477: } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
478: $award='ANONYMOUS';
479: } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
480: $award='ANONYMOUS_CREDIT';
481: }
482: }
483: &Apache::response::handle_previous(\%previous,$award);
484: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
485: $award;
486: if ($award eq 'ASSIGNED_SCORE') {
487: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=1.0*$score;
488: }
489: if ($error) {
490: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
491: $error;
492: }
493: }
494: } elsif ( $target eq 'answer') {
495: $result = &Apache::response::answer_header('customresponse');
496: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
497: $safeeval);
498: if ($env{'form.answer_output_mode'} ne 'tex') {
499: $answer = '<b>'.$answer.'</b>';
500: }
501: $result .= &Apache::response::answer_part('customresponse',$answer);
502: $result .= &Apache::response::answer_footer('customresponse');
503: }
504: if ($target eq 'web') {
505: &setup_prior_tries_hash(\&format_prior_response_custom);
506: }
507: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
508: $target eq 'tex' || $target eq 'analyze') {
509: my $repetition = &repetition();
510: &Apache::lonxml::increment_counter($repetition,"$part.$id");
511: if ($target eq 'analyze') {
512: $Apache::lonhomework::analyze{"$part.$id.type"} = 'customresponse';
513: &Apache::lonhomework::set_bubble_lines();
514: }
515: }
516: if ($target eq 'web') {
517: &setup_prior_tries_hash(\&format_prior_response_math);
518: }
519: pop(@Apache::lonxml::namespace);
520: pop(@Apache::response::custom_answer);
521: pop(@Apache::response::custom_answer_type);
522: &Apache::lonxml::deregister('Apache::response',('answer'));
523: &Apache::response::end_response();
524: return $result;
525: }
526:
527: sub format_prior_response_custom {
528: my ($mode,$answer) =@_;
529: if (ref($answer) eq 'ARRAY') {
530: $answer = '('.join(', ', @{ $answer }).')';
531: }
532: return '<span class="LC_prior_custom">'.
533: &HTML::Entities::encode($answer,'"<>&').'</span>';
534: }
535:
536: sub start_mathresponse {
537: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
538: my $id = &Apache::response::start_response($parstack,$safeeval);
539: push(@Apache::lonxml::namespace,'mathresponse');
540: my $result;
541: @Apache::response::custom_answer=();
542: @Apache::response::custom_answer_type=();
543: &Apache::lonxml::register('Apache::response',('answer'));
544: if ($target eq 'web') {
545: if ( &Apache::response::show_answer() ) {
546: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
547: $safeeval);
548: $Apache::inputtags::answertxt{$id}=[$answer];
549: }
550:
551: } elsif ($target eq 'edit') {
552: $result.=&Apache::edit::tag_start($target,$token);
553: $result.=&Apache::edit::text_arg('String to display for answer:',
554: 'answerdisplay',$token,'50');
555: $result.=&Apache::edit::select_arg('Algebra System:',
556: 'cas',
557: ['maxima','R'],
558: $token);
559: $result.=&Apache::edit::text_arg('Argument Array:',
560: 'args',$token).
561: &Apache::loncommon::help_open_topic('Maxima_Argument_Array');
562: $result.=&Apache::edit::text_arg('Libraries:',
563: 'libraries',$token).
564: &Apache::loncommon::help_open_topic('Maxima_Libraries');
565: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
566: } elsif ($target eq 'modified') {
567: my $constructtag;
568: $constructtag=&Apache::edit::get_new_args($token,$parstack,
569: $safeeval,'answerdisplay','cas','args','libraries');
570: if ($constructtag) {
571: $result = &Apache::edit::rebuild_tag($token);
572: }
573: } elsif ($target eq 'answer' || $target eq 'grade') {
574: &Apache::response::reset_params();
575: } elsif ($target eq 'meta') {
576: $result .= &Apache::response::meta_package_write('mathresponse');
577: }
578: return $result;
579: }
580:
581: sub end_mathresponse {
582: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
583: my $result;
584: my $part=$Apache::inputtags::part;
585: my $id=$Apache::inputtags::response[-1];
586: if ( $target eq 'grade' && &Apache::response::submitted() ) {
587: my $response = &Apache::response::getresponse();
588: if ( $response =~ /[^\s]/ ) {
589: if (!$Apache::lonxml::default_homework_loaded) {
590: &Apache::lonxml::default_homework_load($safeeval);
591: }
592: my %previous = &Apache::response::check_for_previous($response,
593: $part,$id);
594: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
595: $response;
596: my $error;
597: my $award;
598: my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
599: if ($cas eq 'maxima') {
600: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
601: $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args,
602: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
603: }
604: if ($cas eq 'R') {
605: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
606: $award=&Apache::lonr::r_run($Apache::response::custom_answer[-1],$response,$args,
607: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
608: }
609:
610: if (!&Apache::inputtags::valid_award($award)) {
611: $error = $award;
612: $award = 'ERROR';
613: }
614: if (($award eq 'INCORRECT' || $award eq 'APPROX_ANS' ||
615: $award eq 'EXACT_ANS')) {
616: if ($Apache::lonhomework::type eq 'survey') {
617: $award='SUBMITTED';
618: } elsif ($Apache::lonhomework::type eq 'surveycred') {
619: $award='SUBMITTED_CREDIT';
620: } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
621: $award='ANONYMOUS';
622: } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
623: $award='ANONYMOUS_CREDIT';
624: }
625: }
626: &Apache::response::handle_previous(\%previous,$award);
627: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
628: $award;
629: if ($error) {
630: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
631: $error;
632: }
633: }
634: }
635:
636: pop(@Apache::lonxml::namespace);
637: pop(@Apache::response::custom_answer);
638: pop(@Apache::response::custom_answer_type);
639: &Apache::lonxml::deregister('Apache::response',('answer'));
640: &Apache::response::end_response();
641: return $result;
642: }
643:
644: sub format_prior_response_math {
645: my ($mode,$answer) =@_;
646: return '<span class="LC_prior_math">'.
647: &HTML::Entities::encode($answer,'"<>&').'</span>';
648: }
649:
650: sub implicit_multiplication {
651: my ($expression)=@_;
652: # Escape scientific notation, so 3e8 does not become 3*e*8
653: # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
654: $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
655: # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
656: $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
657: # Fill in multiplication signs
658: # a b -> a*b;3 b -> 3*b;3 4 -> 3*4
659: $expression=~s/([A-Za-z0-9])\s+(?=[A-Za-z0-9])/$1\*/gs;
660: # )( -> )*(; ) ( -> )*(
661: $expression=~s/\)\s*\(/\)\*\(/gs;
662: # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
663: $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
664: # a ( -> a*(
665: $expression=~s/([A-Za-z0-9])\s+\(/$1\*\(/gs;
666: # )a -> )*a; )3 -> )*3; ) 3 -> )*3
667: $expression=~s/\)\s*([A-Za-z0-9])/\)\*$1/gs;
668: # 3&8 -> 3e8; 3&-4 -> 3e-4
669: $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
670: return $expression;
671: }
672:
673: sub start_answer {
674: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
675: my $result;
676: push(@Apache::response::custom_answer,
677: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser));
678: push(@Apache::response::custom_answer_type,
679: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)));
680: $Apache::response::custom_answer_type[-1] =~ s/\s+//g;
681: if ($target eq "edit" ) {
682: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
683: $result.=&Apache::edit::editfield($token->[1],
684: $Apache::response::custom_answer[-1],
685: '',80,4);
686: } elsif ( $target eq "modified" ) {
687: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
688: }
689: return $result;
690: }
691:
692: sub end_answer {
693: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
694: if ($target eq 'edit' ) {
695: return &Apache::edit::end_table();
696: }
697: }
698:
699: sub decide_package {
700: my ($tagstack)=@_;
701: my $package;
702: if ($$tagstack[-1] eq 'parameter') {
703: $package='part';
704: } else {
705: my $i=-1;
706: while (defined($$tagstack[$i])) {
707: if ($$tagstack[$i] =~ /(response|hint)$/) {
708: $package=$$tagstack[$i];
709: last;
710: }
711: $i--;
712: }
713: }
714: return $package;
715: }
716:
717: sub start_responseparam {
718: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
719: my $result='';
720: if ($target eq 'meta') {
721: $result = &meta_parameter_write($token->[2]->{'name'},
722: $token->[2]->{'type'},
723: $token->[2]->{'default'},
724: $token->[2]->{'description'});
725: } elsif ($target eq 'edit') {
726: $result.=&Apache::edit::tag_start($target,$token);
727: my $optionlist;
728: my $package=&decide_package($tagstack);
729: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
730: if ($key =~ /^\Q$package\E&(.*)&display$/) {
731: $optionlist.='<option value="'.$1.'">'.
732: $Apache::lonnet::packagetab{$key}.'</option>';
733: }
734: }
735: if (defined($optionlist)) {
736: $result.=&mt('Use template:').' <select name="'.
737: &Apache::edit::html_element_name('parameter_package').'">'.
738: '<option value=""></option>'.$optionlist.'</select><br />';
739: }
740: $result.=&Apache::edit::text_arg('Name:','name',$token).
741: &Apache::edit::text_arg('Type:','type',$token).
742: &Apache::edit::text_arg('Description:','description',$token).
743: &Apache::edit::text_arg('Default:','default',$token).
744: "</td></tr>";
745: $result.=&Apache::edit::end_table;
746: } elsif ($target eq 'modified') {
747: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
748: $safeeval,'name','type',
749: 'description','default');
750: my $element=&Apache::edit::html_element_name('parameter_package');
751: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
752: my $name=$env{"form.$element"};
753: my $tag=&decide_package($tagstack);
754: $token->[2]->{'name'}=$name;
755: $token->[2]->{'type'}=
756: $Apache::lonnet::packagetab{"$tag&$name&type"};
757: $token->[2]->{'description'}=
758: $Apache::lonnet::packagetab{"$tag&$name&display"};
759: $token->[2]->{'default'}=
760: $Apache::lonnet::packagetab{"$tag&$name&default"};
761: $token->[3] = ['name','type','description','default'];
762: $constructtag=1;
763: }
764: if ($constructtag) {
765: $result = &Apache::edit::rebuild_tag($token);
766: }
767: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
768: $target eq 'tex' || $target eq 'analyze' ) {
769: if ($env{'request.state'} eq 'construct') {
770: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
771: my $default=&Apache::lonxml::get_param('default',$parstack,
772: $safeeval);
773: if ($name) {$Apache::inputtags::params{$name}=$default;}
774: }
775: }
776: return $result;
777: }
778:
779: sub end_responseparam {
780: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
781: if ($target eq 'edit') { return ('','no'); }
782: return '';
783: }
784:
785: sub start_parameter {
786: return &start_responseparam(@_);
787: }
788:
789: sub end_parameter {
790: return &end_responseparam(@_);
791: }
792:
793: sub reset_params {
794: %Apache::inputtags::params=();
795: }
796:
797: sub setup_params {
798: my ($tag,$safeeval) = @_;
799:
800: if ($env{'request.state'} eq 'construct') { return; }
801: my %paramlist=();
802: foreach my $key (keys(%Apache::lonnet::packagetab)) {
803: if ($key =~ /^\Q$tag\E/) {
804: my ($package,$name) = split(/&/,$key);
805: $paramlist{$name}=1;
806: }
807: }
808: foreach my $key (keys(%paramlist)) {
809: my $entry= 'resource.'.$Apache::inputtags::part;
810: if (defined($Apache::inputtags::response[-1])) {
811: $entry.='_'.$Apache::inputtags::response[-1];
812: }
813: $entry.='.'.$key;
814: &Apache::lonxml::debug("looking for $entry");
815: my $value = &Apache::lonnet::EXT("$entry");
816: &Apache::lonxml::debug("$key has value :$value:");
817: if ($value eq 'con_lost' || $value =~ /^error:/) {
818: &Apache::lonxml::debug("using nothing");
819: $Apache::inputtags::params{$key}='';
820: } else {
821: my $string="{return qq\0".$value."\0}";
822: my $newvalue=&Apache::run::run($string,$safeeval,1);
823: if (defined($newvalue)) { $value=$newvalue; }
824: $Apache::inputtags::params{$key}=$value;
825: }
826: }
827: }
828:
829: {
830: my @answer_bits;
831: my $need_row_start;
832:
833: sub answer_header {
834: my ($type,$increment,$rows) = @_;
835: my $result;
836: if ($env{'form.answer_output_mode'} eq 'tex') {
837: undef(@answer_bits);
838: my $bit;
839: if ($Apache::lonhomework::type eq 'exam') {
840: $bit = ($Apache::lonxml::counter+$increment).') ';
841: } else {
842: $bit .= ' '.&mt('Answer for Part: [_1]',
843: '\verb|'.$Apache::inputtags::part.'|').' ';
844: }
845: push(@answer_bits,$bit);
846: } else {
847: my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
848: $result = '<table border="1"><tr>';
849: if ($Apache::lonhomework::type eq 'exam') {
850: $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
851: } else {
852: $result .= $td.&mt('Answer for Part: [_1]',
853: $Apache::inputtags::part).'</td>';
854: }
855: $result .= "\n";
856: $need_row_start = 0;
857: }
858: return $result;
859: }
860:
861: sub next_answer {
862: my ($type) = @_;
863: my $result;
864: if ($env{'form.answer_output_mode'} eq 'tex') {
865: # FIXME ... need to do something with tex mode
866: } else {
867: $result .= "</tr>";
868: $need_row_start = 1;
869: }
870: return $result;
871: }
872:
873: sub answer_part {
874: my ($type,$answer,$args) = @_;
875: my $result;
876: if ($env{'form.answer_output_mode'} eq 'tex') {
877: if (!$args->{'no_verbatim'}) {
878: my $to_use='|';
879: foreach my $value (32..126) {
880: my $char=pack('c',$value);
881: if ($answer !~ /\Q$char\E/) {
882: $to_use=$char;
883: last;
884: }
885: }
886: my $fullanswer=$answer;
887: $answer='';
888: foreach my $element (split(/[\;]/,$fullanswer)) {
889: if ($element ne '') {
890: $answer.= '\verb'.$to_use.$element.$to_use.' \newline';
891: }
892: }
893: }
894: if ($answer ne '') {
895: push(@answer_bits,$answer);
896: }
897: } else {
898: if ($need_row_start) {
899: $result .= '<tr>';
900: $need_row_start = 0;
901: }
902: $result .= '<td>'.$answer.'</td>';
903: }
904: return $result;
905: }
906:
907: sub answer_footer {
908: my ($type) = @_;
909: my $result;
910: if ($env{'form.answer_output_mode'} eq 'tex') {
911: $result = ' \vskip 0 mm \noindent \begin{tabular}{|p{1.5cm}|p{6.8cm}|}\hline ';
912: $result .= $answer_bits[0].'&\vspace*{-4mm}\begin{itemize}';
913: for (my $i=1;$i<=$#answer_bits;$i++) {
914: $result.='\item '.$answer_bits[$i].'\vspace*{-7mm}';
915: }
916: $result .= ' \end{itemize} \\\\ \hline \end{tabular} \vskip 0 mm ';
917: } else {
918: if (!$need_row_start) {
919: $result .= '</tr>';
920: }
921: $result .= '</table>';
922: }
923: return $result;
924: }
925:
926: }
927:
928: sub showallfoils {
929: if (defined($env{'form.showallfoils'})) {
930: my ($symb)=&Apache::lonnet::whichuser();
931: if (($env{'request.state'} eq 'construct') ||
932: ($env{'user.adv'} && $symb eq '') ||
933: ($Apache::lonhomework::viewgrades) ) {
934: return 1;
935: }
936: }
937: if ($Apache::lonhomework::type eq 'survey') { return 1; }
938: if ($Apache::lonhomework::type eq 'surveycred') { return 1; }
939: if ($Apache::lonhomework::type eq 'anonsurvey') { return 1; }
940: if ($Apache::lonhomework::type eq 'anonsurveycred') { return 1; }
941:
942: return 0;
943: }
944:
945: =pod
946:
947: =item &getresponse();
948:
949: Retreives the current submitted response, helps out in the case of
950: scantron mode.
951:
952: Returns either the exact text of the submission, or a bubbled response
953: converted to something usable.
954:
955: Optional Arguments:
956: $offset - (defaults to 1) if a problem has more than one bubble
957: response, pass in the number of the bubble wanted, (the
958: first bubble associated with a problem has an offset of 1,
959: the second bubble is 2
960:
961: $resulttype - undef -> a number between 0 and 25
962: 'A is 1' -> a number between 1 and 26
963: 'letter' -> a letter between 'A' and 'Z'
964: $lines - undef problem only needs a single line of bubbles.
965: nonzero Problem wants the first nonempty response in
966: $lines lines of bubbles.
967: $bubbles_per_line - Must be provided if lines is defined.. number of
968: bubbles on a line.
969:
970: =cut
971:
972: sub getresponse {
973: my ($offset,$resulttype, $lines, $bubbles_per_line)=@_;
974: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
975: my $response;
976: if (!defined($offset)) {
977: $offset=1;
978: } else {
979: $formparm.=":$offset";
980: }
981: if (!defined($lines)) {
982: $lines = 1;
983: }
984: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
985: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
986: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
987: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
988: if ($env{'form.submitted'} eq 'scantron') {
989: my $part = $Apache::inputtags::part;
990: my $id = $Apache::inputtags::response[-1];
991:
992: my $line;
993: my $startline = $env{'form.scantron_questnum_start.'.$part.'.'.$id};
994: if (!$startline) {
995: $startline = $Apache::lonxml::counter;
996: }
997: for ($line = 0; $line < $lines; $line++) {
998: my $theline = $startline+$offset-1+$line;
999: $response = $env{"scantron.$theline.answer"};
1000: if ((defined($response)) && ($response ne "") && ($response ne " ")) {
1001: last;
1002: }
1003:
1004: }
1005:
1006: # save bubbled letter for later
1007: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
1008: $response;
1009: if ($resulttype ne 'letter') {
1010: $response = $let_to_num{$response};
1011: if ($resulttype eq 'A is 1') {
1012: if ($response ne "") {
1013: $response = $response+1;
1014: }
1015: }
1016: if ($response ne "") {
1017: $response += $line * $bubbles_per_line;
1018: }
1019: } else {
1020: if ($response ne "") {
1021: my $raw = $response;
1022: $response = chr(ord($response) + $line * $bubbles_per_line);
1023: }
1024: }
1025:
1026: } else {
1027: $response = $env{$formparm};
1028: }
1029: #
1030: # If we have a nonempty answer, correct the numeric value
1031: # of the answer for the line on which it was found.
1032: #
1033:
1034: return $response;
1035: }
1036:
1037: =pod
1038:
1039: =item &repetition();
1040:
1041: In scalar context:
1042:
1043: returns: the number of lines that are required to encode the weight.
1044: (Default is for 10 bubbles per bubblesheet item; other (integer)
1045: values can be specified by using a custom Bubblesheet format file
1046: with an eighteenth entry (BubblesPerRow) set to the integer
1047: appropriate for the bubblesheets which will be used to assign weights.
1048:
1049: In array context:
1050:
1051: returns: number of lines required to encode weight, and bubbles/line.
1052:
1053: =cut
1054:
1055: sub repetition {
1056: my $id = $Apache::inputtags::part;
1057: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1058: if (!defined($weight) || ($weight eq '')) { $weight=1; }
1059: my $bubbles_per_row;
1060: if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
1061: ($env{'form.bubbles_per_row'} > 0)) {
1062: $bubbles_per_row = $env{'form.bubbles_per_row'};
1063: } else {
1064: $bubbles_per_row = 10;
1065: }
1066: my $denominator = $bubbles_per_row;
1067: if (($env{'form.scantron_lastbubblepoints'} == 0) &&
1068: ($bubbles_per_row > 1)) {
1069: $denominator = $bubbles_per_row - 1;
1070: }
1071: my $repetition = int($weight/$denominator);
1072: if ($weight % $denominator != 0) { $repetition++; }
1073: if (wantarray) {
1074: return ($repetition,$bubbles_per_row);
1075: }
1076: return $repetition;
1077:
1078: }
1079:
1080: =pod
1081:
1082: =item &scored_response();
1083:
1084: Sets the results hash elements
1085:
1086: resource.$part_id.$response_id.awarded - to the floating point
1087: number between 0 and 1 that was awarded on the bubbled input
1088:
1089: resource.$part_id.$response_id.awarddetail - to 'ASSIGNED_SCORE'
1090:
1091: Returns
1092:
1093: the number of bubble sheet lines that were used (and likely need to
1094: be passed to &Apache::lonxml::increment_counter()
1095:
1096: Arguments
1097:
1098: $part_id - id of the part to grade
1099: $response_id - id of the response to grade
1100:
1101:
1102: =cut
1103:
1104: sub scored_response {
1105: my ($part,$id)=@_;
1106: my $repetition=&repetition();
1107: my $bubbles_per_row;
1108: if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
1109: ($env{'form.bubbles_per_row'} > 0)) {
1110: $bubbles_per_row = $env{'form.bubbles_per_row'};
1111: } else {
1112: $bubbles_per_row = 10;
1113: }
1114: my $score=0;
1115: for (my $i=0;$i<$repetition;$i++) {
1116: # A is 1, B is 2, etc.
1117: my $increase=&Apache::response::getresponse($i+1);
1118: unless (($increase == $bubbles_per_row-1) &&
1119: ($env{'form.scantron_lastbubblepoints'} == 0)) {
1120: # (get response return 0-9 and then we add 1)
1121: if ($increase ne '') {
1122: $score+=$increase+1;
1123: }
1124: }
1125: }
1126: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1127: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1128: my $pcr=$score/$weight;
1129: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
1130: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
1131: 'ASSIGNED_SCORE';
1132: return $repetition;
1133: }
1134:
1135: sub whichorder {
1136: my ($max,$randomize,$showall,$hash,$rndseed)=@_;
1137: #&Apache::lonxml::debug("man $max randomize $randomize");
1138: my @names;
1139: if (ref($hash->{'names'}) eq 'ARRAY') {
1140: @names = @{$hash->{'names'}};
1141: }
1142: return if (!@names);
1143: my @whichopt =();
1144: my (%top,@toplist,%bottom,@bottomlist);
1145: if (!($showall || ($randomize eq 'no'))) {
1146: my $current=0;
1147: foreach my $name (@names) {
1148: $current++;
1149: if ($$hash{"$name.location"} eq 'top') {
1150: $top{$name}=$current;
1151: } elsif ($$hash{"$name.location"} eq 'bottom') {
1152: $bottom{$name}=$current;
1153: }
1154: }
1155: }
1156: my $topcount=0;
1157: my $bottomcount=0;
1158: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
1159: && ($#names > -1)) {
1160: #&Apache::lonxml::debug("Have $#whichopt max is $max");
1161: my $aopt;
1162: if ($showall || ($randomize eq 'no')) {
1163: $aopt=0;
1164: } else {
1165: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1166: }
1167: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
1168: $aopt=splice(@names,$aopt,1);
1169: #&Apache::lonxml::debug("Picked $aopt");
1170: if ($top{$aopt}) {
1171: $toplist[$top{$aopt}]=$aopt;
1172: $topcount++;
1173: } elsif ($bottom{$aopt}) {
1174: $bottomlist[$bottom{$aopt}]=$aopt;
1175: $bottomcount++;
1176: } else {
1177: push (@whichopt,$aopt);
1178: }
1179: }
1180: for (my $i=0;$i<=$#toplist;$i++) {
1181: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
1182: }
1183: for (my $i=0;$i<=$#bottomlist;$i++) {
1184: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
1185: }
1186: return @whichopt;
1187: }
1188:
1189: sub show_answer {
1190: my $part = $Apache::inputtags::part;
1191: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
1192: my $status = $Apache::inputtags::status[-1];
1193: my $canshow = 0;
1194: if ($award =~ /^correct/) {
1195: if (($Apache::lonhomework::history{"resource.$part.awarded"} >= 1) ||
1196: (&Apache::lonnet::EXT("resource.$part.retrypartial") !~/^1|on|yes$/)) {
1197: $canshow = 1;
1198: }
1199: }
1200: return (($canshow && &Apache::lonhomework::show_problem_status())
1201: || $status eq "SHOW_ANSWER");
1202: }
1203:
1204: sub analyze_store_foilgroup {
1205: my ($shown,$attrs)=@_;
1206: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1207: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
1208: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
1209: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
1210: foreach my $attr (@$attrs) {
1211: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
1212: $Apache::response::foilgroup{"$name.".$attr};
1213: }
1214: }
1215: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1216: }
1217:
1218: sub check_if_computed {
1219: my ($token,$parstack,$safeeval,$name)=@_;
1220: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1221: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1222: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1223: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
1224: }
1225: }
1226:
1227: sub pick_foil_for_concept {
1228: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
1229: my @names;
1230: if (ref($Apache::response::conceptgroup{'names'}) eq 'ARRAY') {
1231: @names = @{ $Apache::response::conceptgroup{'names'} };
1232: }
1233: return if (!@names);
1234: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
1235: my $name=$names[$pick];
1236: push @{ $Apache::response::foilgroup{'names'} }, $name;
1237: foreach my $attr (@$attrs) {
1238: $Apache::response::foilgroup{"$name.".$attr} =
1239: $Apache::response::conceptgroup{"$name.".$attr};
1240: }
1241: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
1242: $Apache::response::foilgroup{"$name.concept"} = $concept;
1243: &Apache::lonxml::debug("Selecting $name in $concept");
1244: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1245: if ($target eq 'analyze') {
1246: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
1247: $concept);
1248: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
1249: $Apache::response::conceptgroup{'names'};
1250: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
1251: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
1252: $name);
1253: foreach my $attr (@$attrs) {
1254: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
1255: $Apache::response::conceptgroup{"$name.$attr"};
1256: }
1257: }
1258: }
1259: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
1260: $hinthash->{"$part_id.concept.$concept"}=
1261: $Apache::response::conceptgroup{'names'};
1262:
1263: }
1264:
1265: =pod
1266:
1267: =item get_response_param()
1268:
1269: Get a parameter associated with a problem.
1270: Parameters:
1271: $id - the id of the paramater, either a part id,
1272: or a partid and responspe id joined by _
1273: $name - Name of the parameter to fetch
1274: $default - Default value for the paramter.
1275:
1276: =cut
1277:
1278: sub get_response_param {
1279: my ($id,$name,$default)=@_;
1280: my $parameter;
1281: if ($env{'request.state'} eq 'construct' &&
1282: defined($Apache::inputtags::params{$name})) {
1283: $parameter=$Apache::inputtags::params{$name};
1284: } else {
1285: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
1286: }
1287: if (!defined($parameter) || $parameter eq '') {
1288: $parameter = $default;
1289: }
1290: return $parameter;
1291: }
1292:
1293: sub submitted {
1294: my ($who)=@_;
1295:
1296: # when scatron grading any submission is a submission
1297: if ($env{'form.submitted'} eq 'scantron') { return 1; }
1298: # if the caller only cared if this was a scantron submission
1299: if ($who eq 'scantron') { return 0; }
1300: # if the Submit Answer button for this particular part was pressed
1301: my $partid=$Apache::inputtags::part;
1302: if ($env{'form.submitted'} eq "part_$partid") {
1303: return 1;
1304: }
1305: if ($env{'form.submitted'} eq "yes"
1306: && defined($env{'form.submit_'.$partid})) {
1307: return 1;
1308: }
1309: # Submit All button on a .page was pressed
1310: if (defined($env{'form.all_submit'})) { return 1; }
1311: # otherwise no submission occurred
1312: return 0;
1313: }
1314:
1315: sub add_to_gradingqueue {
1316: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1317: if ( $courseid eq ''
1318: || $symb eq ''
1319: || $env{'request.state'} eq 'construct'
1320: || $Apache::lonhomework::type ne 'problem') {
1321: return;
1322: }
1323:
1324: my %queue_info = ( 'type' => 'problem',
1325: 'time' => time);
1326:
1327: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
1328: $queue_info{'slot'}=
1329: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
1330: }
1331:
1332: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
1333: if ($result ne 'ok') {
1334: &Apache::lonxml::error("add_to_queue said $result");
1335: }
1336: }
1337:
1338: =pod
1339:
1340: =item check_status()
1341:
1342: basically undef and 0 (both false) mean that they still have work to do
1343: and all true values mean that they can't do any more work
1344:
1345: a return of undef means it is unattempted
1346: a return of 0 means it is both attempted and still has tries and
1347: is wrong or is only partially correct, and retries
1348: are allowed.
1349: a return of 1 means it is marked correct
1350: a return of 2 means they have exceeded maximum number of tries
1351: a return of 3 means it is after the answer date
1352:
1353: =cut
1354:
1355: sub check_status {
1356: my ($id)=@_;
1357: if (!defined($id)) { $id=$Apache::inputtags::part; }
1358: my $curtime=&Apache::lonnet::EXT('system.time');
1359: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
1360: my $duedate=&Apache::lonhomework::due_date($id);
1361: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
1362: if ( $opendate && $curtime > $opendate &&
1363: $duedate && $curtime > $duedate &&
1364: $answerdate && $curtime > $answerdate) {
1365: return 3;
1366: }
1367: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1368: if ($status =~ /^correct/) {
1369: my $awarded=&Apache::lonnet::EXT("user.resource.resource.$id.awarded");
1370: my $retrypartial=&Apache::lonnet::EXT("resource.$id.retrypartial");
1371: unless (($retrypartial =~ /^1|on|yes$/) && ($awarded <1)) {
1372: return 1;
1373: }
1374: }
1375: if (!$status) { return undef; }
1376: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
1377: if ($maxtries eq '') { $maxtries=2; }
1378: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
1379: if ($curtries < $maxtries) { return 0; }
1380: return 2;
1381: }
1382:
1383: =pod
1384:
1385: =item setup_prior_tries_hash()
1386:
1387: Foreach each past .submission $func is called with 3 arguments
1388: - the mode to set things up for (currently always 'grade')
1389: - the stored .submission string
1390: - The expansion of $data
1391:
1392: $data is an array ref containing elements that are either
1393: - scalars that are other elements of the history hash to pass to $func
1394: - ref to data to be passed untouched to $func
1395:
1396: $questiontype is the questiontype (currently only passed in if
1397: randomizebytry.
1398:
1399: =cut
1400:
1401: sub setup_prior_tries_hash {
1402: my ($func,$data,$questiontype) = @_;
1403: my $part = $Apache::inputtags::part;
1404: my $id = $Apache::inputtags::response[-1];
1405: foreach my $i (1..$Apache::lonhomework::history{'version'}) {
1406: my $partprefix = "$i:resource.$part";
1407: my $sub_key = "$partprefix.$id.submission";
1408: next if (!exists($Apache::lonhomework::history{$sub_key}));
1409: my $type_key = "$partprefix.type";
1410: my $type = $Apache::lonhomework::history{$type_key};
1411: my @other_data;
1412: if (ref($data) eq 'ARRAY') {
1413: foreach my $datum (@{ $data }) {
1414: if (ref($datum)) {
1415: push(@other_data,$datum);
1416: } else {
1417: my $info_key = "$i:resource.$part.$id.$datum";
1418: push(@other_data,$Apache::lonhomework::history{$info_key});
1419: }
1420: }
1421: }
1422: if ($questiontype eq 'randomizetry') {
1423: my $order_key = "$partprefix.$id.foilorder";
1424: my @whichopts = &Apache::lonnet::str2array($Apache::lonhomework::history{$order_key});
1425: if (@whichopts > 0) {
1426: shift(@other_data);
1427: unshift(@other_data,\@whichopts);
1428: }
1429: }
1430: my $output =
1431: &$func('grade',
1432: $Apache::lonhomework::history{$sub_key},
1433: \@other_data);
1434: if (defined($output)) {
1435: $Apache::inputtags::submission_display{$sub_key} = $output;
1436: }
1437: }
1438: }
1439:
1440: 1;
1441: __END__
1442:
1443: =pod
1444:
1445: =cut
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