1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.237 2014/09/24 18:14:27 damieng 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:
60: BEGIN {
61: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
62: }
63:
64: sub start_response {
65: my ($parstack,$safeeval)=@_;
66: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
67: if ($#Apache::inputtags::import > -1) {
68: &Apache::lonxml::debug("Turning :$id: into");
69: $id = join('_',@Apache::inputtags::import).'_'.$id;
70: &Apache::lonxml::debug("New :$id:");
71: }
72: push (@Apache::inputtags::response,$id);
73: push (@Apache::inputtags::responselist,$id);
74: @Apache::inputtags::inputlist=();
75: if ($Apache::inputtags::part eq '' &&
76: !$Apache::lonhomework::ignore_response_errors) {
77: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
78: }
79: if ($Apache::inputtags::response_with_no_part &&
80: $Apache::inputtags::part ne '0') {
81: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
82: }
83: if ($Apache::inputtags::part eq '0') {
84: $Apache::inputtags::response_with_no_part=1;
85: }
86: return $id;
87: }
88:
89: sub end_response {
90: #pop @Apache::inputtags::response;
91: @Apache::inputtags::inputlist=();
92: return '';
93: }
94:
95: sub start_hintresponse {
96: my ($parstack,$safeeval)=@_;
97: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
98: push (@Apache::inputtags::hint,$id);
99: push (@Apache::inputtags::hintlist,$id);
100: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
101: return $id;
102: }
103:
104: sub end_hintresponse {
105: pop @Apache::inputtags::hint;
106: if (defined($Apache::inputtags::paramstack[-1])) {
107: %Apache::inputtags::params=
108: @{ pop(@Apache::inputtags::paramstack) };
109: }
110: return '';
111: }
112:
113: my @randomseeds;
114: sub pushrandomnumber {
115: my $rand_alg=&Apache::lonnet::get_rand_alg();
116: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
117: $rand_alg eq '64bit2') {
118: # do nothing
119: } else {
120: my @seed=&Math::Random::random_get_seed();
121: push(@randomseeds,\@seed);
122: }
123: &Apache::response::setrandomnumber(@_);
124: }
125: sub poprandomnumber {
126: my $rand_alg=&Apache::lonnet::get_rand_alg();
127: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
128: $rand_alg eq '64bit2') {
129: return;
130: }
131: my $seed=pop(@randomseeds);
132: if ($seed) {
133: &Math::Random::random_set_seed(@$seed);
134: } else {
135: &Apache::lonxml::error("Unable to restore random algorithm.");
136: }
137: }
138:
139: sub setrandomnumber {
140: my ($ignore_id2,$target,$rndseed) = @_;
141: if (!defined($rndseed)) {
142: $rndseed=&Apache::structuretags::setup_rndseed(undef,$target);
143: }
144: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
145: &Apache::lonxml::debug("randseed $rndseed");
146: # $rndseed=unpack("%32i",$rndseed);
147: my $rand_alg=&Apache::lonnet::get_rand_alg();
148: my ($rndmod,$rndmod2);
149:
150: my ($id1,$id2,$shift_amt);
151: if ($Apache::lonhomework::parsing_a_problem) {
152: $id1=$Apache::inputtags::part;
153: if (defined($Apache::inputtags::response[-1])) {
154: $id2=$Apache::inputtags::response[-1];
155: }
156: $shift_amt=scalar(@Apache::inputtags::responselist);
157: } elsif ($Apache::lonhomework::parsing_a_task) {
158: $id1=&Apache::bridgetask::get_dim_id();
159: if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
160: $id2=$Apache::bridgetask::instance{$id1}[-1];
161: $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
162: } else {
163: $shift_amt=0;
164: }
165: }
166: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
167: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
168: $rand_alg eq '64bit2') {
169: $rndmod=(&Apache::lonnet::numval($id1) << 10);
170: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
171: } elsif ($rand_alg eq '64bit3') {
172: $rndmod=(&Apache::lonnet::numval2($id1) << 10);
173: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
174: } elsif ($rand_alg eq '64bit4') {
175: my $shift=(4*$shift_amt)%30;
176: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
177: if (defined($id2)) {
178: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
179: }
180: } else {
181: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
182: }
183: $Apache::lonhomework::results{'resource.'.$id1.'.rawrndseed'}=$rndseed;
184: if ($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: $Apache::lonhomework::results{'resource.'.$id1.'.rndseed'}=$rndseed;
201: &Apache::lonnet::setup_random_from_rndseed($rndseed);
202: return '';
203: }
204:
205: sub meta_parameter_write {
206: my ($name,$type,$default,$display)=@_;
207: my $partref=$Apache::inputtags::part;
208: my $result='<parameter part="'.$Apache::inputtags::part.'"';
209: if (defined($Apache::inputtags::response[-1])) {
210: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
211: $partref.='_'.$Apache::inputtags::response[-1];
212: }
213: $result.= ' name="'.$name.'"'.
214: ' type="'.$type.'"'.
215: (defined($default)?' default="'.$default.'"':'').
216: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
217: .'></parameter>'
218: ."\n";
219: return $result;
220: }
221:
222: sub meta_package_write {
223: my $name=shift;
224: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
225: if(defined($Apache::inputtags::response[-1])) {
226: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
227: }
228: $result.=' package="'.$name.'"></parameter>'."\n";
229: return $result;
230: }
231:
232: sub meta_stores_write {
233: my ($name,$type,$display)=@_;
234: my $partref=$Apache::inputtags::part;
235: my $result = '<stores part="'.$Apache::inputtags::part.'"';
236: if (defined($Apache::inputtags::response[-1])) {
237: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
238: $partref.='_'.$Apache::inputtags::response[-1];
239: }
240: $result.= ' name="'.$name.'"'.
241: ' type="'.$type.'"'.
242: ' display="'.$display.' [Part: '.$partref.']"'.
243: "></stores>\n";
244: }
245:
246: =pod
247:
248: =item mandatory_part_meta()
249:
250: Autogenerate metadata for mandatory
251: input (from RAT or lonparmset) and
252: output (to lonspreadsheet)
253: of each part
254:
255: Note: responseid-specific data 'submission' and 'awarddetail'
256: not available to spreadsheet -> skip here
257:
258: =cut
259:
260:
261: sub mandatory_part_meta {
262: return &meta_package_write('part').
263: &meta_stores_write('solved','string','Problem Status').
264: &meta_stores_write('tries','int_zeropos','Number of Attempts').
265: &meta_stores_write('awarded','float','Partial Credit Factor');
266: }
267:
268: sub meta_part_order {
269: if (@Apache::inputtags::partlist) {
270: my @parts=@Apache::inputtags::partlist;
271: shift(@parts);
272: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
273: } else {
274: return '<partorder>0</partorder>'."\n";
275: }
276: }
277:
278: sub meta_response_order {
279: if (@Apache::inputtags::responselist) {
280: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
281: '</responseorder>'."\n";
282: }
283: }
284:
285: sub check_for_previous {
286: my ($curresponse,$partid,$id,$last,$type) = @_;
287: my %previous;
288: $previous{'used'} = 0;
289: my $questiontype = $Apache::lonhomework::type;
290: my $curr_rndseed = $env{'form.'.$partid.'.rndseed'};
291: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
292: if ($key =~ /resource\.\Q$partid\E\.\Q$id\E\.submission$/) {
293: if ( $last && $key =~ /^(\d+):/ ) {
294: next if ($1 >= $last);
295: }
296: &Apache::lonxml::debug("Trying $key");
297: my $pastresponse=$Apache::lonhomework::history{$key};
298: if ($pastresponse eq $curresponse) {
299: my $history;
300: if ( $key =~ /^(\d+):/ ) {
301: $history=$1;
302: next if ((($questiontype eq 'randomizetry') ||
303: ($Apache::lonhomework::history{"$history:resource.$partid.type"} eq 'randomizetry')) &&
304: ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
305: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
306: $previous{'last'}='0';
307: push(@{ $previous{'version'} },$history);
308: } else {
309: next if ((($questiontype eq 'randomizetry') ||
310: ($Apache::lonhomework::history{"resource.$partid.type"} eq 'randomizetry')) &&
311: ($curr_rndseed ne $Apache::lonhomework::history{"resource.$partid.rndseed"}));
312: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
313: $previous{'last'}='1';
314: }
315: $previous{'used'} = 1;
316: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
317: if ($previous{'award'} eq 'INTERNAL_ERROR') { $previous{'used'}=0; }
318: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
319: } elsif ($type eq 'ci') {
320: if (lc($pastresponse) eq lc($curresponse)) {
321: if ($key =~ /^(\d+):/) {
322: my $history = $1;
323: next if (($questiontype eq 'randomizetry') &&
324: ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
325: push (@{$previous{'versionci'}},$history);
326: $previous{'awardci'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
327: $previous{'usedci'} = 1;
328: }
329: }
330: }
331: }
332: }
333: &Apache::lonhomework::showhash(%previous);
334: return %previous;
335: }
336:
337: sub handle_previous {
338: my ($previous,$ad)=@_;
339: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
340: if ($$previous{'last'}) {
341: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
342: push(@Apache::inputtags::previous_version,$$previous{'version'});
343: } elsif (($Apache::lonhomework::type ne 'survey') &&
344: ($Apache::lonhomework::type ne 'surveycred') &&
345: ($Apache::lonhomework::type ne 'anonsurvey') &&
346: ($Apache::lonhomework::type ne 'anonsurveycred')) {
347: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
348: push(@Apache::inputtags::previous_version,$$previous{'version'});
349: }
350: }
351: }
352:
353: sub view_or_modify {
354: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
355: my $myself=0;
356: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
357: $myself=1;
358: }
359: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
360: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
361: if ($mgr) { return "M"; }
362: if ($vgr) { return "V"; }
363: if ($myself) { return "V"; }
364: return '';
365: }
366:
367: sub start_dataresponse {
368: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
369: my $id = &Apache::response::start_response($parstack,$safeeval);
370: my $result;
371: if ($target eq 'web') {
372: $result = $token->[2]->{'display'}.':';
373: } elsif ($target eq 'meta') {
374: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
375: $token->[2]->{'type'},
376: $token->[2]->{'display'});
377: $result .= &Apache::response::meta_package_write('dataresponse');
378: }
379: return $result;
380: }
381:
382: sub end_dataresponse {
383: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
384: my $result;
385: if ( $target eq 'web' ) {
386: } elsif ($target eq 'grade' ) {
387: if ( defined $env{'form.submitted'}) {
388: my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
389: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
390: if ($allowed) {
391: &Apache::response::setup_params('dataresponse',$safeeval);
392: my $partid = $Apache::inputtags::part;
393: my $id = $Apache::inputtags::response['-1'];
394: my $response = $env{'form.HWVAL_'.$id};
395: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
396: if ( $response =~ /[^\s]/) {
397: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
398: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
399: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
400: }
401: } else {
402: $result=&mt('Not Permitted to change values');
403: }
404: }
405: }
406: &Apache::response::end_response;
407: return $result;
408: }
409:
410: sub start_customresponse {
411: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
412: my $id = &Apache::response::start_response($parstack,$safeeval);
413: push(@Apache::lonxml::namespace,'customresponse');
414: my $result;
415: @Apache::response::custom_answer=();
416: @Apache::response::custom_answer_type=();
417: &Apache::lonxml::register('Apache::response',('answer'));
418: if ($target eq 'web') {
419: if ( &Apache::response::show_answer() ) {
420: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
421: $safeeval);
422: $Apache::inputtags::answertxt{$id}=[$answer];
423: }
424: } elsif ($target eq 'edit') {
425: $result.=&Apache::edit::tag_start($target,$token);
426: $result.=&Apache::edit::text_arg('String to display for answer:',
427: 'answerdisplay',$token,'50');
428: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
429: } elsif ($target eq 'modified') {
430: my $constructtag;
431: $constructtag=&Apache::edit::get_new_args($token,$parstack,
432: $safeeval,'answerdisplay');
433: if ($constructtag) {
434: $result = &Apache::edit::rebuild_tag($token);
435: }
436: } elsif ($target eq 'answer' || $target eq 'grade') {
437: &Apache::response::reset_params();
438: } elsif ($target eq 'meta') {
439: $result .= &Apache::response::meta_package_write('customresponse');
440: }
441: return $result;
442: }
443:
444: sub end_customresponse {
445: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
446: my $result;
447: my $part=$Apache::inputtags::part;
448: my $id=$Apache::inputtags::response[-1];
449: if ( $target eq 'grade' && &Apache::response::submitted() ) {
450: my $response = &Apache::response::getresponse();
451: if ($Apache::lonhomework::type eq 'exam' ||
452: &Apache::response::submitted('scantron')) {
453: &Apache::response::scored_response($part,$id);
454: } elsif ( $response =~ /[^\s]/ &&
455: $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
456: if (!$Apache::lonxml::default_homework_loaded) {
457: &Apache::lonxml::default_homework_load($safeeval);
458: }
459: my %previous = &Apache::response::check_for_previous($response,
460: $part,$id);
461: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
462: $response;
463: my $error;
464: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
465: $response;
466:
467: my ($award,$score) = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
468: if (!&Apache::inputtags::valid_award($award)) {
469: $error = $award;
470: $award = 'ERROR';
471: }
472: if (($award eq 'INCORRECT' || $award eq 'APPROX_ANS' ||
473: $award eq 'EXACT_ANS')) {
474: if ($Apache::lonhomework::type eq 'survey') {
475: $award='SUBMITTED';
476: } elsif ($Apache::lonhomework::type eq 'surveycred') {
477: $award='SUBMITTED_CREDIT';
478: } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
479: $award='ANONYMOUS';
480: } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
481: $award='ANONYMOUS_CREDIT';
482: }
483: }
484: &Apache::response::handle_previous(\%previous,$award);
485: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
486: $award;
487: if ($award eq 'ASSIGNED_SCORE') {
488: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=1.0*$score;
489: }
490: if ($error) {
491: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
492: $error;
493: }
494: }
495: } elsif ( $target eq 'answer') {
496: $result = &Apache::response::answer_header('customresponse');
497: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
498: $safeeval);
499: if ($env{'form.answer_output_mode'} ne 'tex') {
500: $answer = '<b>'.$answer.'</b>';
501: }
502: $result .= &Apache::response::answer_part('customresponse',$answer);
503: $result .= &Apache::response::answer_footer('customresponse');
504: }
505: if ($target eq 'web') {
506: &setup_prior_tries_hash(\&format_prior_response_custom);
507: }
508: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
509: $target eq 'tex' || $target eq 'analyze') {
510: my $repetition = &repetition();
511: &Apache::lonxml::increment_counter($repetition,"$part.$id");
512: if ($target eq 'analyze') {
513: $Apache::lonhomework::analyze{"$part.$id.type"} = 'customresponse';
514: &Apache::lonhomework::set_bubble_lines();
515: }
516: }
517: pop(@Apache::lonxml::namespace);
518: pop(@Apache::response::custom_answer);
519: pop(@Apache::response::custom_answer_type);
520: &Apache::lonxml::deregister('Apache::response',('answer'));
521: &Apache::response::end_response();
522: return $result;
523: }
524:
525: sub format_prior_response_custom {
526: my ($mode,$answer) =@_;
527: if (ref($answer) eq 'ARRAY') {
528: $answer = '('.join(', ', @{ $answer }).')';
529: }
530: return '<span class="LC_prior_custom">'.
531: &HTML::Entities::encode($answer,'"<>&').'</span>';
532: }
533:
534: sub start_mathresponse {
535: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
536: my $id = &Apache::response::start_response($parstack,$safeeval);
537: push(@Apache::lonxml::namespace,'mathresponse');
538: my $result;
539: @Apache::response::custom_answer=();
540: @Apache::response::custom_answer_type=();
541: &Apache::lonxml::register('Apache::response',('answer'));
542: if ($target eq 'web') {
543: if ( &Apache::response::show_answer() ) {
544: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
545: $safeeval);
546: $Apache::inputtags::answertxt{$id}=[$answer];
547: }
548:
549: } elsif ($target eq 'edit') {
550: $result.=&Apache::edit::tag_start($target,$token);
551: $result.=&Apache::edit::text_arg('String to display for answer:',
552: 'answerdisplay',$token,'50');
553: $result.=&Apache::edit::select_arg('Algebra System:',
554: 'cas',
555: ['maxima','R'],
556: $token);
557: $result.=&Apache::edit::text_arg('Argument Array:',
558: 'args',$token).
559: &Apache::loncommon::help_open_topic('Maxima_Argument_Array');
560: $result.=&Apache::edit::text_arg('Libraries:',
561: 'libraries',$token).
562: &Apache::loncommon::help_open_topic('Maxima_Libraries');
563: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
564: } elsif ($target eq 'modified') {
565: my $constructtag;
566: $constructtag=&Apache::edit::get_new_args($token,$parstack,
567: $safeeval,'answerdisplay','cas','args','libraries');
568: if ($constructtag) {
569: $result = &Apache::edit::rebuild_tag($token);
570: }
571: } elsif ($target eq 'answer' || $target eq 'grade') {
572: &Apache::response::reset_params();
573: } elsif ($target eq 'meta') {
574: $result .= &Apache::response::meta_package_write('mathresponse');
575: }
576: return $result;
577: }
578:
579: sub edit_mathresponse_button {
580: my ($id,$field)=@_;
581: my $btype = $env{'browser.type'};
582: my $bversion = $env{'browser.version'};
583: if (($btype eq 'explorer' && $bversion < 9) || ($btype eq 'safari' && $bversion < 3) ||
584: ($btype eq 'mozilla' && $bversion < 3)) {
585: # DragMath applet
586: my $button=&mt('Edit Answer');
587: # my $helplink=&Apache::loncommon::help_open_topic('Formula_Editor');
588: my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
589: return(<<ENDFORMULABUTTON);
590: <script type="text/javascript" language="JavaScript">
591: function edit_${id}_${field} (textarea) {
592: thenumber = textarea;
593: thedata = document.forms['lonhomework'].elements[textarea].value;
594: newwin = window.open("/adm/dragmath/MaximaPopup.html","","width=565,height=400,resizable");
595: }
596: </script>
597: <a href="javascript:edit_${id}_${field}('${field}');void(0);"><img class="stift" src="$iconpath/stift.gif" alt="$button" title="$button" /></a>
598: ENDFORMULABUTTON
599:
600: } else {
601: # LON-CAPA math equation editor
602: return(<<EQ_EDITOR_SCRIPT);
603: <script type="text/javascript">
604: var field = document.getElementById('${field}');
605: field.className += ' math'; // note the space
606: var LCMATH_started;
607: if (typeof LCMATH_started === 'undefined') {
608: LCMATH_started = true;
609: var script = document.createElement("script");
610: script.type = "text/javascript";
611: script.src = "/adm/LC_math_editor/LC_math_editor.min.js";
612: document.body.appendChild(script);
613: window.addEventListener('load', function(e) {
614: LCMATH.initEditors();
615: }, false);
616: }
617: </script>
618: EQ_EDITOR_SCRIPT
619: }
620: }
621:
622: sub end_mathresponse {
623: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
624: my $result;
625: my $part=$Apache::inputtags::part;
626: my $id=$Apache::inputtags::response[-1];
627: if ( $target eq 'grade' && &Apache::response::submitted() ) {
628: my $response = &Apache::response::getresponse();
629: if ( $response =~ /[^\s]/ ) {
630: if (!$Apache::lonxml::default_homework_loaded) {
631: &Apache::lonxml::default_homework_load($safeeval);
632: }
633: my %previous = &Apache::response::check_for_previous($response,
634: $part,$id);
635: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
636: $response;
637: my $error;
638: my $award;
639: my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
640: if ($cas eq 'maxima') {
641: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
642: $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args,
643: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
644: }
645: if ($cas eq 'R') {
646: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
647: $award=&Apache::lonr::r_run($Apache::response::custom_answer[-1],$response,$args,
648: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
649: }
650:
651: if (!&Apache::inputtags::valid_award($award)) {
652: $error = $award;
653: $award = 'ERROR';
654: }
655: if (($award eq 'INCORRECT' || $award eq 'APPROX_ANS' ||
656: $award eq 'EXACT_ANS')) {
657: if ($Apache::lonhomework::type eq 'survey') {
658: $award='SUBMITTED';
659: } elsif ($Apache::lonhomework::type eq 'surveycred') {
660: $award='SUBMITTED_CREDIT';
661: } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
662: $award='ANONYMOUS';
663: } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
664: $award='ANONYMOUS_CREDIT';
665: }
666: }
667: &Apache::response::handle_previous(\%previous,$award);
668: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
669: $award;
670: if ($error) {
671: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
672: $error;
673: }
674: }
675: }
676: if ($target eq 'web') {
677: &setup_prior_tries_hash(\&format_prior_response_math);
678: my $partid = $Apache::inputtags::part;
679: my $id = $Apache::inputtags::response[-1];
680: if (($Apache::inputtags::status['-1'] eq 'CAN_ANSWER')
681: && (&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffeditor') ne 'yes')) {
682: $result.=&edit_mathresponse_button($id,"HWVAL_$id");
683: }
684: }
685:
686: pop(@Apache::lonxml::namespace);
687: pop(@Apache::response::custom_answer);
688: pop(@Apache::response::custom_answer_type);
689: &Apache::lonxml::deregister('Apache::response',('answer'));
690: &Apache::response::end_response();
691: return $result;
692: }
693:
694: sub format_prior_response_math {
695: my ($mode,$answer) =@_;
696: return '<span class="LC_prior_math">'.
697: &HTML::Entities::encode($answer,'"<>&').'</span>';
698: }
699:
700: sub implicit_multiplication {
701: my ($expression)=@_;
702: # Escape scientific notation, so 3e8 does not become 3*e*8
703: # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
704: $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
705: # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
706: $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
707: # Fill in multiplication signs
708: # a b -> a*b;3 b -> 3*b;3 4 -> 3*4
709: $expression=~s/([A-Za-z0-9])\s+(?=[A-Za-z0-9])/$1\*/gs;
710: # )( -> )*(; ) ( -> )*(
711: $expression=~s/\)\s*\(/\)\*\(/gs;
712: # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
713: $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
714: # a ( -> a*(
715: $expression=~s/([A-Za-z0-9])\s+\(/$1\*\(/gs;
716: # )a -> )*a; )3 -> )*3; ) 3 -> )*3
717: $expression=~s/\)\s*([A-Za-z0-9])/\)\*$1/gs;
718: # 3&8 -> 3e8; 3&-4 -> 3e-4
719: $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
720: return $expression;
721: }
722:
723: sub start_answer {
724: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
725: my $result;
726: push(@Apache::response::custom_answer,
727: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser));
728: push(@Apache::response::custom_answer_type,
729: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)));
730: $Apache::response::custom_answer_type[-1] =~ s/\s+//g;
731: if ($target eq "edit" ) {
732: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
733: $result.=&Apache::edit::editfield($token->[1],
734: $Apache::response::custom_answer[-1],
735: '',80,4);
736: } elsif ( $target eq "modified" ) {
737: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
738: }
739: return $result;
740: }
741:
742: sub end_answer {
743: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
744: if ($target eq 'edit' ) {
745: return &Apache::edit::end_table();
746: }
747: }
748:
749: sub decide_package {
750: my ($tagstack)=@_;
751: my $package;
752: if ($$tagstack[-1] eq 'parameter') {
753: $package='part';
754: } else {
755: my $i=-1;
756: while (defined($$tagstack[$i])) {
757: if ($$tagstack[$i] =~ /(response|hint)$/) {
758: $package=$$tagstack[$i];
759: last;
760: }
761: $i--;
762: }
763: }
764: return $package;
765: }
766:
767: sub start_responseparam {
768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
769: my $result='';
770: if ($target eq 'meta') {
771: $result = &meta_parameter_write($token->[2]->{'name'},
772: $token->[2]->{'type'},
773: $token->[2]->{'default'},
774: $token->[2]->{'description'});
775: } elsif ($target eq 'edit') {
776: $result.=&Apache::edit::tag_start($target,$token);
777: my $optionlist;
778: my $package=&decide_package($tagstack);
779: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
780: if ($key =~ /^\Q$package\E&(.*)&display$/) {
781: $optionlist.='<option value="'.$1.'">'.
782: $Apache::lonnet::packagetab{$key}.'</option>';
783: }
784: }
785: if (defined($optionlist)) {
786: $result.=&mt('Use template:').' <select name="'.
787: &Apache::edit::html_element_name('parameter_package').'">'.
788: '<option value=""></option>'.$optionlist.'</select><br />';
789: }
790: $result.=&Apache::edit::text_arg('Name:','name',$token).
791: &Apache::edit::text_arg('Type:','type',$token).
792: &Apache::edit::text_arg('Description:','description',$token).
793: &Apache::edit::text_arg('Default:','default',$token).
794: "</td></tr>";
795: $result.=&Apache::edit::end_table;
796: } elsif ($target eq 'modified') {
797: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
798: $safeeval,'name','type',
799: 'description','default');
800: my $element=&Apache::edit::html_element_name('parameter_package');
801: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
802: my $name=$env{"form.$element"};
803: my $tag=&decide_package($tagstack);
804: $token->[2]->{'name'}=$name;
805: $token->[2]->{'type'}=
806: $Apache::lonnet::packagetab{"$tag&$name&type"};
807: $token->[2]->{'description'}=
808: $Apache::lonnet::packagetab{"$tag&$name&display"};
809: $token->[2]->{'default'}=
810: $Apache::lonnet::packagetab{"$tag&$name&default"};
811: $token->[3] = ['name','type','description','default'];
812: $constructtag=1;
813: }
814: if ($constructtag) {
815: $result = &Apache::edit::rebuild_tag($token);
816: }
817: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
818: $target eq 'tex' || $target eq 'analyze' ) {
819: if ($env{'request.state'} eq 'construct') {
820: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
821: my $default=&Apache::lonxml::get_param('default',$parstack,
822: $safeeval);
823: if ($name) {$Apache::inputtags::params{$name}=$default;}
824: }
825: }
826: return $result;
827: }
828:
829: sub end_responseparam {
830: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
831: if ($target eq 'edit') { return ('','no'); }
832: return '';
833: }
834:
835: sub start_parameter {
836: return &start_responseparam(@_);
837: }
838:
839: sub end_parameter {
840: return &end_responseparam(@_);
841: }
842:
843: sub reset_params {
844: %Apache::inputtags::params=();
845: }
846:
847: sub setup_params {
848: my ($tag,$safeeval) = @_;
849:
850: if ($env{'request.state'} eq 'construct') { return; }
851: my %paramlist=();
852: foreach my $key (keys(%Apache::lonnet::packagetab)) {
853: if ($key =~ /^\Q$tag\E/) {
854: my ($package,$name) = split(/&/,$key);
855: $paramlist{$name}=1;
856: }
857: }
858: foreach my $key (keys(%paramlist)) {
859: my $entry= 'resource.'.$Apache::inputtags::part;
860: if (defined($Apache::inputtags::response[-1])) {
861: $entry.='_'.$Apache::inputtags::response[-1];
862: }
863: $entry.='.'.$key;
864: &Apache::lonxml::debug("looking for $entry");
865: my $value = &Apache::lonnet::EXT("$entry");
866: &Apache::lonxml::debug("$key has value :$value:");
867: if ($value eq 'con_lost' || $value =~ /^error:/) {
868: &Apache::lonxml::debug("using nothing");
869: $Apache::inputtags::params{$key}='';
870: } else {
871: my $string="{return qq\0".$value."\0}";
872: my $newvalue=&Apache::run::run($string,$safeeval,1);
873: if (defined($newvalue)) { $value=$newvalue; }
874: $Apache::inputtags::params{$key}=$value;
875: }
876: }
877: }
878:
879: {
880: my @answer_bits;
881: my $need_row_start;
882:
883: sub answer_header {
884: my ($type,$increment,$rows) = @_;
885: my $result;
886: if ($env{'form.answer_output_mode'} eq 'tex') {
887: undef(@answer_bits);
888: my $bit;
889: if ($Apache::lonhomework::type eq 'exam') {
890: $bit = ($Apache::lonxml::counter+$increment).') ';
891: } else {
892: $bit .= ' '.&mt('Answer for Part: [_1]',
893: '\verb|'.$Apache::inputtags::part.'|').' ';
894: }
895: push(@answer_bits,$bit);
896: } else {
897: my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
898: $result = '<table border="1"><tr>';
899: if ($Apache::lonhomework::type eq 'exam') {
900: $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
901: } else {
902: $result .= $td.&mt('Answer for Part: [_1]',
903: $Apache::inputtags::part).'</td>';
904: }
905: $result .= "\n";
906: $need_row_start = 0;
907: }
908: return $result;
909: }
910:
911: sub next_answer {
912: my ($type) = @_;
913: my $result;
914: if ($env{'form.answer_output_mode'} eq 'tex') {
915: # FIXME ... need to do something with tex mode
916: } else {
917: $result .= "</tr>";
918: $need_row_start = 1;
919: }
920: return $result;
921: }
922:
923: sub answer_part {
924: my ($type,$answer,$args) = @_;
925: my $result;
926: if ($env{'form.answer_output_mode'} eq 'tex') {
927: if (!$args->{'no_verbatim'}) {
928: my $to_use='|';
929: foreach my $value (32..126) {
930: my $char=pack('c',$value);
931: if ($answer !~ /\Q$char\E/) {
932: $to_use=$char;
933: last;
934: }
935: }
936: my $fullanswer=$answer;
937: $answer='';
938: foreach my $element (split(/[\;]/,$fullanswer)) {
939: if ($element ne '') {
940: $answer.= '\verb'.$to_use.$element.$to_use.' \newline';
941: }
942: }
943: }
944: if ($answer ne '') {
945: push(@answer_bits,$answer);
946: }
947: } else {
948: if ($need_row_start) {
949: $result .= '<tr>';
950: $need_row_start = 0;
951: }
952: $result .= '<td>'.$answer.'</td>';
953: }
954: return $result;
955: }
956:
957: sub answer_footer {
958: my ($type) = @_;
959: my $result;
960: if ($env{'form.answer_output_mode'} eq 'tex') {
961: $result = ' \vskip 0 mm \noindent \begin{tabular}{|p{1.5cm}|p{6.8cm}|}\hline ';
962: $result .= $answer_bits[0].'&\vspace*{-4mm}\begin{itemize}';
963: for (my $i=1;$i<=$#answer_bits;$i++) {
964: $result.='\item '.$answer_bits[$i].'\vspace*{-7mm}';
965: }
966: $result .= ' \end{itemize} \\\\ \hline \end{tabular} \vskip 0 mm ';
967: } else {
968: if (!$need_row_start) {
969: $result .= '</tr>';
970: }
971: $result .= '</table>';
972: }
973: return $result;
974: }
975:
976: }
977:
978: sub showallfoils {
979: if (defined($env{'form.showallfoils'})) {
980: my ($symb)=&Apache::lonnet::whichuser();
981: if (($env{'request.state'} eq 'construct') ||
982: ($env{'user.adv'} && $symb eq '') ||
983: ($Apache::lonhomework::viewgrades) ) {
984: return 1;
985: }
986: }
987: if ($Apache::lonhomework::type eq 'survey') { return 1; }
988: if ($Apache::lonhomework::type eq 'surveycred') { return 1; }
989: if ($Apache::lonhomework::type eq 'anonsurvey') { return 1; }
990: if ($Apache::lonhomework::type eq 'anonsurveycred') { return 1; }
991:
992: return 0;
993: }
994:
995: =pod
996:
997: =item &getresponse();
998:
999: Retreives the current submitted response, helps out in the case of
1000: scantron mode.
1001:
1002: Returns either the exact text of the submission, or a bubbled response
1003: converted to something usable.
1004:
1005: Optional Arguments:
1006: $offset - (defaults to 1) if a problem has more than one bubble
1007: response, pass in the number of the bubble wanted, (the
1008: first bubble associated with a problem has an offset of 1,
1009: the second bubble is 2
1010:
1011: $resulttype - undef -> a number between 0 and 25
1012: 'A is 1' -> a number between 1 and 26
1013: 'letter' -> a letter between 'A' and 'Z'
1014: $lines - undef problem only needs a single line of bubbles.
1015: nonzero Problem wants the first nonempty response in
1016: $lines lines of bubbles.
1017: $bubbles_per_line - Must be provided if lines is defined.. number of
1018: bubbles on a line.
1019:
1020: =cut
1021:
1022: sub getresponse {
1023: my ($offset,$resulttype, $lines, $bubbles_per_line)=@_;
1024: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
1025: my $response;
1026: if (!defined($offset)) {
1027: $offset=1;
1028: } else {
1029: $formparm.=":$offset";
1030: }
1031: if (!defined($lines)) {
1032: $lines = 1;
1033: }
1034: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
1035: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
1036: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
1037: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
1038: if ($env{'form.submitted'} eq 'scantron') {
1039: my $part = $Apache::inputtags::part;
1040: my $id = $Apache::inputtags::response[-1];
1041:
1042: my $line;
1043: my $startline = $env{'form.scantron_questnum_start.'.$part.'.'.$id};
1044: if (!$startline) {
1045: $startline = $Apache::lonxml::counter;
1046: }
1047: for ($line = 0; $line < $lines; $line++) {
1048: my $theline = $startline+$offset-1+$line;
1049: $response = $env{"scantron.$theline.answer"};
1050: if ((defined($response)) && ($response ne "") && ($response ne " ")) {
1051: last;
1052: }
1053:
1054: }
1055:
1056: # save bubbled letter for later
1057: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
1058: $response;
1059: if ($resulttype ne 'letter') {
1060: $response = $let_to_num{$response};
1061: if ($resulttype eq 'A is 1') {
1062: if ($response ne "") {
1063: $response = $response+1;
1064: }
1065: }
1066: if ($response ne "") {
1067: $response += $line * $bubbles_per_line;
1068: }
1069: } else {
1070: if ($response ne "") {
1071: my $raw = $response;
1072: $response = chr(ord($response) + $line * $bubbles_per_line);
1073: }
1074: }
1075:
1076: } else {
1077: $response = $env{$formparm};
1078: }
1079: #
1080: # If we have a nonempty answer, correct the numeric value
1081: # of the answer for the line on which it was found.
1082: #
1083:
1084: return $response;
1085: }
1086:
1087: =pod
1088:
1089: =item &repetition();
1090:
1091: In scalar context:
1092:
1093: returns: the number of lines that are required to encode the weight.
1094: (Default is for 10 bubbles per bubblesheet item; other (integer)
1095: values can be specified by using a custom Bubblesheet format file
1096: with an eighteenth entry (BubblesPerRow) set to the integer
1097: appropriate for the bubblesheets which will be used to assign weights.
1098:
1099: In array context:
1100:
1101: returns: number of lines required to encode weight, and bubbles/line.
1102:
1103: =cut
1104:
1105: sub repetition {
1106: my $id = $Apache::inputtags::part;
1107: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1108: if (!defined($weight) || ($weight eq '')) { $weight=1; }
1109: my $bubbles_per_row;
1110: if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
1111: ($env{'form.bubbles_per_row'} > 0)) {
1112: $bubbles_per_row = $env{'form.bubbles_per_row'};
1113: } else {
1114: $bubbles_per_row = 10;
1115: }
1116: my $denominator = $bubbles_per_row;
1117: if (($env{'form.scantron_lastbubblepoints'} == 0) &&
1118: ($bubbles_per_row > 1)) {
1119: $denominator = $bubbles_per_row - 1;
1120: }
1121: my $repetition = int($weight/$denominator);
1122: if ($weight % $denominator != 0) { $repetition++; }
1123: if (wantarray) {
1124: return ($repetition,$bubbles_per_row);
1125: }
1126: return $repetition;
1127:
1128: }
1129:
1130: =pod
1131:
1132: =item &scored_response();
1133:
1134: Sets the results hash elements
1135:
1136: resource.$part_id.$response_id.awarded - to the floating point
1137: number between 0 and 1 that was awarded on the bubbled input
1138:
1139: resource.$part_id.$response_id.awarddetail - to 'ASSIGNED_SCORE'
1140:
1141: Returns
1142:
1143: the number of bubble sheet lines that were used (and likely need to
1144: be passed to &Apache::lonxml::increment_counter()
1145:
1146: Arguments
1147:
1148: $part_id - id of the part to grade
1149: $response_id - id of the response to grade
1150:
1151:
1152: =cut
1153:
1154: sub scored_response {
1155: my ($part,$id)=@_;
1156: my $repetition=&repetition();
1157: my $bubbles_per_row;
1158: if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
1159: ($env{'form.bubbles_per_row'} > 0)) {
1160: $bubbles_per_row = $env{'form.bubbles_per_row'};
1161: } else {
1162: $bubbles_per_row = 10;
1163: }
1164: my $score=0;
1165: for (my $i=0;$i<$repetition;$i++) {
1166: # A is 1, B is 2, etc.
1167: my $increase=&Apache::response::getresponse($i+1);
1168: unless (($increase == $bubbles_per_row-1) &&
1169: ($env{'form.scantron_lastbubblepoints'} == 0)) {
1170: # (get response return 0-9 and then we add 1)
1171: if ($increase ne '') {
1172: $score+=$increase+1;
1173: }
1174: }
1175: }
1176: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1177: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1178: my $pcr=$score/$weight;
1179: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
1180: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
1181: 'ASSIGNED_SCORE';
1182: return $repetition;
1183: }
1184:
1185: sub whichorder {
1186: my ($max,$randomize,$showall,$hash,$rndseed)=@_;
1187: #&Apache::lonxml::debug("man $max randomize $randomize");
1188: my @names;
1189: if (ref($hash->{'names'}) eq 'ARRAY') {
1190: @names = @{$hash->{'names'}};
1191: }
1192: return if (!@names);
1193: my @whichopt =();
1194: my (%top,@toplist,%bottom,@bottomlist);
1195: if (!($showall || ($randomize eq 'no'))) {
1196: my $current=0;
1197: foreach my $name (@names) {
1198: $current++;
1199: if ($$hash{"$name.location"} eq 'top') {
1200: $top{$name}=$current;
1201: } elsif ($$hash{"$name.location"} eq 'bottom') {
1202: $bottom{$name}=$current;
1203: }
1204: }
1205: }
1206: my $topcount=0;
1207: my $bottomcount=0;
1208: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
1209: && ($#names > -1)) {
1210: #&Apache::lonxml::debug("Have $#whichopt max is $max");
1211: my $aopt;
1212: if ($showall || ($randomize eq 'no')) {
1213: $aopt=0;
1214: } else {
1215: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1216: }
1217: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
1218: $aopt=splice(@names,$aopt,1);
1219: #&Apache::lonxml::debug("Picked $aopt");
1220: if ($top{$aopt}) {
1221: $toplist[$top{$aopt}]=$aopt;
1222: $topcount++;
1223: } elsif ($bottom{$aopt}) {
1224: $bottomlist[$bottom{$aopt}]=$aopt;
1225: $bottomcount++;
1226: } else {
1227: push (@whichopt,$aopt);
1228: }
1229: }
1230: for (my $i=0;$i<=$#toplist;$i++) {
1231: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
1232: }
1233: for (my $i=0;$i<=$#bottomlist;$i++) {
1234: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
1235: }
1236: return @whichopt;
1237: }
1238:
1239: sub show_answer {
1240: my $part = $Apache::inputtags::part;
1241: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
1242: my $status = $Apache::inputtags::status[-1];
1243: my $canshow = 0;
1244: if ($award =~ /^correct/) {
1245: if (($Apache::lonhomework::history{"resource.$part.awarded"} >= 1) ||
1246: (&Apache::lonnet::EXT("resource.$part.retrypartial") !~/^1|on|yes$/)) {
1247: $canshow = 1;
1248: }
1249: }
1250: return (($canshow && &Apache::lonhomework::show_problem_status())
1251: || $status eq "SHOW_ANSWER");
1252: }
1253:
1254: sub analyze_store_foilgroup {
1255: my ($shown,$attrs)=@_;
1256: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1257: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
1258: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
1259: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
1260: foreach my $attr (@$attrs) {
1261: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
1262: $Apache::response::foilgroup{"$name.".$attr};
1263: }
1264: }
1265: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1266: }
1267:
1268: sub check_if_computed {
1269: my ($token,$parstack,$safeeval,$name)=@_;
1270: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1271: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1272: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1273: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
1274: }
1275: }
1276:
1277: sub pick_foil_for_concept {
1278: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
1279: my @names;
1280: if (ref($Apache::response::conceptgroup{'names'}) eq 'ARRAY') {
1281: @names = @{ $Apache::response::conceptgroup{'names'} };
1282: }
1283: return if (!@names);
1284: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
1285: my $name=$names[$pick];
1286: push @{ $Apache::response::foilgroup{'names'} }, $name;
1287: foreach my $attr (@$attrs) {
1288: $Apache::response::foilgroup{"$name.".$attr} =
1289: $Apache::response::conceptgroup{"$name.".$attr};
1290: }
1291: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
1292: $Apache::response::foilgroup{"$name.concept"} = $concept;
1293: &Apache::lonxml::debug("Selecting $name in $concept");
1294: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1295: if ($target eq 'analyze') {
1296: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
1297: $concept);
1298: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
1299: $Apache::response::conceptgroup{'names'};
1300: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
1301: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
1302: $name);
1303: foreach my $attr (@$attrs) {
1304: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
1305: $Apache::response::conceptgroup{"$name.$attr"};
1306: }
1307: }
1308: }
1309: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
1310: $hinthash->{"$part_id.concept.$concept"}=
1311: $Apache::response::conceptgroup{'names'};
1312:
1313: }
1314:
1315: =pod
1316:
1317: =item get_response_param()
1318:
1319: Get a parameter associated with a problem.
1320: Parameters:
1321: $id - the id of the paramater, either a part id,
1322: or a partid and responspe id joined by _
1323: $name - Name of the parameter to fetch
1324: $default - Default value for the paramter.
1325:
1326: =cut
1327:
1328: sub get_response_param {
1329: my ($id,$name,$default)=@_;
1330: my $parameter;
1331: if ($env{'request.state'} eq 'construct' &&
1332: defined($Apache::inputtags::params{$name})) {
1333: $parameter=$Apache::inputtags::params{$name};
1334: } else {
1335: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
1336: }
1337: if (!defined($parameter) || $parameter eq '') {
1338: $parameter = $default;
1339: }
1340: return $parameter;
1341: }
1342:
1343: sub submitted {
1344: my ($who)=@_;
1345:
1346: # when scatron grading any submission is a submission
1347: if ($env{'form.submitted'} eq 'scantron') { return 1; }
1348: # if the caller only cared if this was a scantron submission
1349: if ($who eq 'scantron') { return 0; }
1350: # if the Submit Answer button for this particular part was pressed
1351: my $partid=$Apache::inputtags::part;
1352: if ($env{'form.submitted'} eq "part_$partid") {
1353: return 1;
1354: }
1355: if ($env{'form.submitted'} eq "yes"
1356: && defined($env{'form.submit_'.$partid})) {
1357: return 1;
1358: }
1359: # Submit All button on a .page was pressed
1360: if (defined($env{'form.all_submit'})) { return 1; }
1361: # otherwise no submission occurred
1362: return 0;
1363: }
1364:
1365: sub add_to_gradingqueue {
1366: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1367: if ( $courseid eq ''
1368: || $symb eq ''
1369: || $env{'request.state'} eq 'construct'
1370: || $Apache::lonhomework::type ne 'problem') {
1371: return;
1372: }
1373:
1374: my %queue_info = ( 'type' => 'problem',
1375: 'time' => time);
1376:
1377: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
1378: $queue_info{'slot'}=
1379: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
1380: }
1381:
1382: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
1383: if ($result ne 'ok') {
1384: &Apache::lonxml::error("add_to_queue said $result");
1385: }
1386: }
1387:
1388: =pod
1389:
1390: =item check_status()
1391:
1392: basically undef and 0 (both false) mean that they still have work to do
1393: and all true values mean that they can't do any more work
1394:
1395: a return of undef means it is unattempted
1396: a return of 0 means it is attmpted and wrong but still has tries
1397: a return of 1 means it is marked correct
1398: a return of 2 means they have exceed maximum number of tries
1399: a return of 3 means it after the answer date
1400:
1401: =cut
1402:
1403: sub check_status {
1404: my ($id)=@_;
1405: if (!defined($id)) { $id=$Apache::inputtags::part; }
1406: my $curtime=&Apache::lonnet::EXT('system.time');
1407: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
1408: my $duedate=&Apache::lonhomework::due_date($id);
1409: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
1410: if ( $opendate && $curtime > $opendate &&
1411: $duedate && $curtime > $duedate &&
1412: $answerdate && $curtime > $answerdate) {
1413: return 3;
1414: }
1415: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1416: if ($status =~ /^correct/) { return 1; }
1417: if (!$status) { return undef; }
1418: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
1419: if ($maxtries eq '') { $maxtries=2; }
1420: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
1421: if ($curtries < $maxtries) { return 0; }
1422: return 2;
1423: }
1424:
1425: =pod
1426:
1427: =item setup_prior_tries_hash()
1428:
1429: Foreach each past .submission $func is called with 3 arguments
1430: - the mode to set things up for (currently always 'grade')
1431: - the stored .submission string
1432: - The expansion of $data
1433:
1434: $data is an array ref containing elements that are either
1435: - scalars that are other elements of the history hash to pass to $func
1436: - ref to data to be passed untouched to $func
1437:
1438: $questiontype is the questiontype (currently only passed in if
1439: randomizebytry.
1440:
1441: =cut
1442:
1443: sub setup_prior_tries_hash {
1444: my ($func,$data,$questiontype) = @_;
1445: my $part = $Apache::inputtags::part;
1446: my $id = $Apache::inputtags::response[-1];
1447: foreach my $i (1..$Apache::lonhomework::history{'version'}) {
1448: my $partprefix = "$i:resource.$part";
1449: my $sub_key = "$partprefix.$id.submission";
1450: next if (!exists($Apache::lonhomework::history{$sub_key}));
1451: my $type_key = "$partprefix.type";
1452: my $type = $Apache::lonhomework::history{$type_key};
1453: my @other_data;
1454: if (ref($data) eq 'ARRAY') {
1455: foreach my $datum (@{ $data }) {
1456: if (ref($datum)) {
1457: push(@other_data,$datum);
1458: } else {
1459: my $info_key = "$i:resource.$part.$id.$datum";
1460: push(@other_data,$Apache::lonhomework::history{$info_key});
1461: }
1462: }
1463: }
1464: if ($questiontype eq 'randomizetry') {
1465: my $order_key = "$partprefix.$id.foilorder";
1466: my @whichopts = &Apache::lonnet::str2array($Apache::lonhomework::history{$order_key});
1467: if (@whichopts > 0) {
1468: shift(@other_data);
1469: unshift(@other_data,\@whichopts);
1470: }
1471: }
1472: my $output =
1473: &$func('grade',
1474: $Apache::lonhomework::history{$sub_key},
1475: \@other_data);
1476: if (defined($output)) {
1477: $Apache::inputtags::submission_display{$sub_key} = $output;
1478: }
1479: }
1480: }
1481:
1482: 1;
1483: __END__
1484:
1485: =pod
1486:
1487: =cut
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