1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.239 2015/02/20 22:14:49 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: 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: $Apache::lonhomework::results{'resource.'.$id1.'.rawrndseed'}=$rndseed;
185: if ($rndseed =~/([,:])/) {
186: my $char=$1;
187: use integer;
188: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
189: $num1+=$rndmod;
190: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
191: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
192: $rndseed=$num1.$char.$num2;
193: } else {
194: $rndseed+=$rndmod;
195: if($Apache::lonnet::_64bit) {
196: use integer;
197: $rndseed=(($rndseed<<32)>>32);
198: }
199: }
200: &Apache::lonxml::debug("randseed $rndmod $rndseed");
201: $Apache::lonhomework::results{'resource.'.$id1.'.rndseed'}=$rndseed;
202: &Apache::lonnet::setup_random_from_rndseed($rndseed);
203: return '';
204: }
205:
206: sub meta_parameter_write {
207: my ($name,$type,$default,$display)=@_;
208: my $partref=$Apache::inputtags::part;
209: my $result='<parameter part="'.$Apache::inputtags::part.'"';
210: if (defined($Apache::inputtags::response[-1])) {
211: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
212: $partref.='_'.$Apache::inputtags::response[-1];
213: }
214: $result.= ' name="'.$name.'"'.
215: ' type="'.$type.'"'.
216: (defined($default)?' default="'.$default.'"':'').
217: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
218: .'></parameter>'
219: ."\n";
220: return $result;
221: }
222:
223: sub meta_package_write {
224: my $name=shift;
225: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
226: if(defined($Apache::inputtags::response[-1])) {
227: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
228: }
229: $result.=' package="'.$name.'"></parameter>'."\n";
230: return $result;
231: }
232:
233: sub meta_stores_write {
234: my ($name,$type,$display)=@_;
235: my $partref=$Apache::inputtags::part;
236: my $result = '<stores part="'.$Apache::inputtags::part.'"';
237: if (defined($Apache::inputtags::response[-1])) {
238: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
239: $partref.='_'.$Apache::inputtags::response[-1];
240: }
241: $result.= ' name="'.$name.'"'.
242: ' type="'.$type.'"'.
243: ' display="'.$display.' [Part: '.$partref.']"'.
244: "></stores>\n";
245: }
246:
247: =pod
248:
249: =item mandatory_part_meta()
250:
251: Autogenerate metadata for mandatory
252: input (from RAT or lonparmset) and
253: output (to lonspreadsheet)
254: of each part
255:
256: Note: responseid-specific data 'submission' and 'awarddetail'
257: not available to spreadsheet -> skip here
258:
259: =cut
260:
261:
262: sub mandatory_part_meta {
263: return &meta_package_write('part').
264: &meta_stores_write('solved','string','Problem Status').
265: &meta_stores_write('tries','int_zeropos','Number of Attempts').
266: &meta_stores_write('awarded','float','Partial Credit Factor');
267: }
268:
269: sub meta_part_order {
270: if (@Apache::inputtags::partlist) {
271: my @parts=@Apache::inputtags::partlist;
272: shift(@parts);
273: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
274: } else {
275: return '<partorder>0</partorder>'."\n";
276: }
277: }
278:
279: sub meta_response_order {
280: if (@Apache::inputtags::responselist) {
281: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
282: '</responseorder>'."\n";
283: }
284: }
285:
286: sub check_for_previous {
287: my ($curresponse,$partid,$id,$last,$type) = @_;
288: my %previous;
289: $previous{'used'} = 0;
290: my $questiontype = $Apache::lonhomework::type;
291: my $curr_rndseed = $env{'form.'.$partid.'.rndseed'};
292: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
293: if ($key =~ /resource\.\Q$partid\E\.\Q$id\E\.submission$/) {
294: if ( $last && $key =~ /^(\d+):/ ) {
295: next if ($1 >= $last);
296: }
297: &Apache::lonxml::debug("Trying $key");
298: my $pastresponse=$Apache::lonhomework::history{$key};
299: if ($pastresponse eq $curresponse) {
300: my $history;
301: if ( $key =~ /^(\d+):/ ) {
302: $history=$1;
303: next if ((($questiontype eq 'randomizetry') ||
304: ($Apache::lonhomework::history{"$history:resource.$partid.type"} eq 'randomizetry')) &&
305: ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
306: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
307: $previous{'last'}='0';
308: push(@{ $previous{'version'} },$history);
309: } else {
310: next if ((($questiontype eq 'randomizetry') ||
311: ($Apache::lonhomework::history{"resource.$partid.type"} eq 'randomizetry')) &&
312: ($curr_rndseed ne $Apache::lonhomework::history{"resource.$partid.rndseed"}));
313: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
314: $previous{'last'}='1';
315: }
316: $previous{'used'} = 1;
317: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
318: if ($previous{'award'} eq 'INTERNAL_ERROR') { $previous{'used'}=0; }
319: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
320: } elsif ($type eq 'ci') {
321: if (lc($pastresponse) eq lc($curresponse)) {
322: if ($key =~ /^(\d+):/) {
323: my $history = $1;
324: next if (($questiontype eq 'randomizetry') &&
325: ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
326: push (@{$previous{'versionci'}},$history);
327: $previous{'awardci'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
328: $previous{'usedci'} = 1;
329: }
330: }
331: }
332: }
333: }
334: &Apache::lonhomework::showhash(%previous);
335: return %previous;
336: }
337:
338: sub handle_previous {
339: my ($previous,$ad)=@_;
340: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
341: if ($$previous{'last'}) {
342: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
343: push(@Apache::inputtags::previous_version,$$previous{'version'});
344: } elsif (($Apache::lonhomework::type ne 'survey') &&
345: ($Apache::lonhomework::type ne 'surveycred') &&
346: ($Apache::lonhomework::type ne 'anonsurvey') &&
347: ($Apache::lonhomework::type ne 'anonsurveycred')) {
348: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
349: push(@Apache::inputtags::previous_version,$$previous{'version'});
350: }
351: }
352: }
353:
354: sub view_or_modify {
355: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
356: my $myself=0;
357: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
358: $myself=1;
359: }
360: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
361: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
362: if ($mgr) { return "M"; }
363: if ($vgr) { return "V"; }
364: if ($myself) { return "V"; }
365: return '';
366: }
367:
368: sub start_dataresponse {
369: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
370: my $id = &Apache::response::start_response($parstack,$safeeval);
371: my $result;
372: if ($target eq 'web') {
373: $result = $token->[2]->{'display'}.':';
374: } elsif ($target eq 'meta') {
375: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
376: $token->[2]->{'type'},
377: $token->[2]->{'display'});
378: $result .= &Apache::response::meta_package_write('dataresponse');
379: }
380: return $result;
381: }
382:
383: sub end_dataresponse {
384: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
385: my $result;
386: if ( $target eq 'web' ) {
387: } elsif ($target eq 'grade' ) {
388: if ( defined $env{'form.submitted'}) {
389: my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
390: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
391: if ($allowed) {
392: &Apache::response::setup_params('dataresponse',$safeeval);
393: my $partid = $Apache::inputtags::part;
394: my $id = $Apache::inputtags::response['-1'];
395: my $response = $env{'form.HWVAL_'.$id};
396: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
397: if ( $response =~ /[^\s]/) {
398: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
399: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
400: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
401: }
402: } else {
403: $result=&mt('Not Permitted to change values');
404: }
405: }
406: }
407: &Apache::response::end_response;
408: return $result;
409: }
410:
411: sub start_customresponse {
412: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
413: my $id = &Apache::response::start_response($parstack,$safeeval);
414: push(@Apache::lonxml::namespace,'customresponse');
415: my $result;
416: @Apache::response::custom_answer=();
417: @Apache::response::custom_answer_type=();
418: &Apache::lonxml::register('Apache::response',('answer'));
419: if ($target eq 'web') {
420: if ( &Apache::response::show_answer() ) {
421: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
422: $safeeval);
423: $Apache::inputtags::answertxt{$id}=[$answer];
424: }
425: } elsif ($target eq 'edit') {
426: $result.=&Apache::edit::tag_start($target,$token);
427: $result.=&Apache::edit::text_arg('String to display for answer:',
428: 'answerdisplay',$token,'50');
429: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
430: } elsif ($target eq 'modified') {
431: my $constructtag;
432: $constructtag=&Apache::edit::get_new_args($token,$parstack,
433: $safeeval,'answerdisplay');
434: if ($constructtag) {
435: $result = &Apache::edit::rebuild_tag($token);
436: }
437: } elsif ($target eq 'answer' || $target eq 'grade') {
438: &Apache::response::reset_params();
439: } elsif ($target eq 'meta') {
440: $result .= &Apache::response::meta_package_write('customresponse');
441: }
442: return $result;
443: }
444:
445: sub end_customresponse {
446: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
447: my $result;
448: my $part=$Apache::inputtags::part;
449: my $id=$Apache::inputtags::response[-1];
450: if ( $target eq 'grade' && &Apache::response::submitted() ) {
451: my $response = &Apache::response::getresponse();
452: if ($Apache::lonhomework::type eq 'exam' ||
453: &Apache::response::submitted('scantron')) {
454: &Apache::response::scored_response($part,$id);
455: } elsif ( $response =~ /[^\s]/ &&
456: $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
457: if (!$Apache::lonxml::default_homework_loaded) {
458: &Apache::lonxml::default_homework_load($safeeval);
459: }
460: my %previous = &Apache::response::check_for_previous($response,
461: $part,$id);
462: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
463: $response;
464: my $error;
465: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
466: $response;
467:
468: my ($award,$score) = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
469: if (!&Apache::inputtags::valid_award($award)) {
470: $error = $award;
471: $award = 'ERROR';
472: }
473: if (($award eq 'INCORRECT' || $award eq 'APPROX_ANS' ||
474: $award eq 'EXACT_ANS')) {
475: if ($Apache::lonhomework::type eq 'survey') {
476: $award='SUBMITTED';
477: } elsif ($Apache::lonhomework::type eq 'surveycred') {
478: $award='SUBMITTED_CREDIT';
479: } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
480: $award='ANONYMOUS';
481: } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
482: $award='ANONYMOUS_CREDIT';
483: }
484: }
485: &Apache::response::handle_previous(\%previous,$award);
486: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
487: $award;
488: if ($award eq 'ASSIGNED_SCORE') {
489: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=1.0*$score;
490: }
491: if ($error) {
492: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
493: $error;
494: }
495: }
496: } elsif ( $target eq 'answer') {
497: $result = &Apache::response::answer_header('customresponse');
498: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
499: $safeeval);
500: if ($env{'form.answer_output_mode'} ne 'tex') {
501: $answer = '<b>'.$answer.'</b>';
502: }
503: $result .= &Apache::response::answer_part('customresponse',$answer);
504: $result .= &Apache::response::answer_footer('customresponse');
505: }
506: if ($target eq 'web') {
507: &setup_prior_tries_hash(\&format_prior_response_custom);
508: }
509: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
510: $target eq 'tex' || $target eq 'analyze') {
511: my $repetition = &repetition();
512: &Apache::lonxml::increment_counter($repetition,"$part.$id");
513: if ($target eq 'analyze') {
514: $Apache::lonhomework::analyze{"$part.$id.type"} = 'customresponse';
515: &Apache::lonhomework::set_bubble_lines();
516: }
517: }
518: pop(@Apache::lonxml::namespace);
519: pop(@Apache::response::custom_answer);
520: pop(@Apache::response::custom_answer_type);
521: &Apache::lonxml::deregister('Apache::response',('answer'));
522: &Apache::response::end_response();
523: return $result;
524: }
525:
526: sub format_prior_response_custom {
527: my ($mode,$answer) =@_;
528: if (ref($answer) eq 'ARRAY') {
529: $answer = '('.join(', ', @{ $answer }).')';
530: }
531: return '<span class="LC_prior_custom">'.
532: &HTML::Entities::encode($answer,'"<>&').'</span>';
533: }
534:
535: sub start_mathresponse {
536: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
537: my $id = &Apache::response::start_response($parstack,$safeeval);
538: push(@Apache::lonxml::namespace,'mathresponse');
539: my $result;
540: @Apache::response::custom_answer=();
541: @Apache::response::custom_answer_type=();
542: &Apache::lonxml::register('Apache::response',('answer'));
543: if ($target eq 'web') {
544: if ( &Apache::response::show_answer() ) {
545: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
546: $safeeval);
547: $Apache::inputtags::answertxt{$id}=[$answer];
548: }
549:
550: } elsif ($target eq 'edit') {
551: $result.=&Apache::edit::tag_start($target,$token);
552: $result.=&Apache::edit::text_arg('String to display for answer:',
553: 'answerdisplay',$token,'50');
554: $result.=&Apache::edit::select_arg('Algebra System:',
555: 'cas',
556: ['maxima','R'],
557: $token);
558: $result.=&Apache::edit::text_arg('Argument Array:',
559: 'args',$token).
560: &Apache::loncommon::help_open_topic('Maxima_Argument_Array');
561: $result.=&Apache::edit::text_arg('Libraries:',
562: 'libraries',$token).
563: &Apache::loncommon::help_open_topic('Maxima_Libraries');
564: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
565: } elsif ($target eq 'modified') {
566: my $constructtag;
567: $constructtag=&Apache::edit::get_new_args($token,$parstack,
568: $safeeval,'answerdisplay','cas','args','libraries');
569: if ($constructtag) {
570: $result = &Apache::edit::rebuild_tag($token);
571: }
572: } elsif ($target eq 'answer' || $target eq 'grade') {
573: &Apache::response::reset_params();
574: } elsif ($target eq 'meta') {
575: $result .= &Apache::response::meta_package_write('mathresponse');
576: }
577: return $result;
578: }
579:
580: sub edit_mathresponse_button {
581: my ($partid,$id)=@_;
582: my $field = 'HWVAL_'.$partid.'_'.$id;
583: my $btype = $env{'browser.type'};
584: my $bversion = $env{'browser.version'};
585: if (($btype eq 'explorer' && $bversion < 9) || ($btype eq 'safari' && $bversion < 3) ||
586: ($btype eq 'mozilla' && $bversion < 3)) {
587: # DragMath applet
588: my $button=&mt('Edit Answer');
589: # my $helplink=&Apache::loncommon::help_open_topic('Formula_Editor');
590: my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
591: return(<<ENDFORMULABUTTON);
592: <script type="text/javascript" language="JavaScript">
593: function LC_mathedit_${field} (LCtextline) {
594: thenumber = LCtextline;
595: var thedata = '';
596: if (document.getElementById(LCtextline)) {
597: thedata = document.getElementById(LCtextline).value;
598: }
599: newwin = window.open("/adm/dragmath/MaximaPopup.html","","width=565,height=400,resizable");
600: }
601: </script>
602: <a href="javascript:LC_mathedit_${field}('${field}');void(0);"><img class="stift" src="$iconpath/stift.gif" alt="$button" title="$button" /></a>
603: ENDFORMULABUTTON
604:
605: } else {
606: # LON-CAPA math equation editor
607: my $mathjaxjs;
608: unless (lc(&Apache::lontexconvert::tex_engine()) eq 'mathjax') {
609: $mathjaxjs = <<"MATHJAX_SCRIPT";
610: var mathjaxscript = document.createElement("script");
611: mathjaxscript.type = "text/javascript";
612: mathjaxscript.src = "/adm/MathJax/MathJax.js?config=TeX-AMS-MML_HTMLorMML";
613: document.body.appendChild(mathjaxscript);
614: MATHJAX_SCRIPT
615: }
616: return(<<EQ_EDITOR_SCRIPT);
617: <script type="text/javascript">
618: var LCmathField = document.getElementById('${field}');
619: LCmathField.className += ' math'; // note the space
620: LCmathField.setAttribute('data-implicit_operators', 'true');
621: var LCMATH_started;
622: if (typeof LCMATH_started === 'undefined') {
623: $mathjaxjs
624: LCMATH_started = true;
625: var script = document.createElement("script");
626: script.type = "text/javascript";
627: script.src = "/adm/LC_math_editor/LC_math_editor.min.js";
628: document.body.appendChild(script);
629: window.addEventListener('load', function(e) {
630: LCMATH.initEditors();
631: }, false);
632: }
633: </script>
634: EQ_EDITOR_SCRIPT
635: }
636: }
637:
638: sub end_mathresponse {
639: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
640: my $result;
641: my $part=$Apache::inputtags::part;
642: my $id=$Apache::inputtags::response[-1];
643: if ( $target eq 'grade' && &Apache::response::submitted() ) {
644: my $response = &Apache::response::getresponse();
645: if ( $response =~ /[^\s]/ ) {
646: if (!$Apache::lonxml::default_homework_loaded) {
647: &Apache::lonxml::default_homework_load($safeeval);
648: }
649: my %previous = &Apache::response::check_for_previous($response,
650: $part,$id);
651: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
652: $response;
653: my $error;
654: my $award;
655: my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
656: if ($cas eq 'maxima') {
657: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
658: $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args,
659: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
660: }
661: if ($cas eq 'R') {
662: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
663: $award=&Apache::lonr::r_run($Apache::response::custom_answer[-1],$response,$args,
664: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
665: }
666:
667: if (!&Apache::inputtags::valid_award($award)) {
668: $error = $award;
669: $award = 'ERROR';
670: }
671: if (($award eq 'INCORRECT' || $award eq 'APPROX_ANS' ||
672: $award eq 'EXACT_ANS')) {
673: if ($Apache::lonhomework::type eq 'survey') {
674: $award='SUBMITTED';
675: } elsif ($Apache::lonhomework::type eq 'surveycred') {
676: $award='SUBMITTED_CREDIT';
677: } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
678: $award='ANONYMOUS';
679: } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
680: $award='ANONYMOUS_CREDIT';
681: }
682: }
683: &Apache::response::handle_previous(\%previous,$award);
684: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
685: $award;
686: if ($error) {
687: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
688: $error;
689: }
690: }
691: }
692: if ($target eq 'web') {
693: &setup_prior_tries_hash(\&format_prior_response_math);
694: my $partid = $Apache::inputtags::part;
695: my $id = $Apache::inputtags::response[-1];
696: if (($Apache::inputtags::status['-1'] eq 'CAN_ANSWER')
697: && (&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffeditor') ne 'yes')) {
698: $result.=&edit_mathresponse_button($partid,$id);
699: }
700: }
701:
702: pop(@Apache::lonxml::namespace);
703: pop(@Apache::response::custom_answer);
704: pop(@Apache::response::custom_answer_type);
705: &Apache::lonxml::deregister('Apache::response',('answer'));
706: &Apache::response::end_response();
707: return $result;
708: }
709:
710: sub format_prior_response_math {
711: my ($mode,$answer) =@_;
712: return '<span class="LC_prior_math">'.
713: &HTML::Entities::encode($answer,'"<>&').'</span>';
714: }
715:
716: sub implicit_multiplication {
717: my ($expression)=@_;
718: # Escape scientific notation, so 3e8 does not become 3*e*8
719: # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
720: $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
721: # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
722: $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
723: # Fill in multiplication signs
724: # a b -> a*b;3 b -> 3*b;3 4 -> 3*4
725: $expression=~s/([A-Za-z0-9])\s+(?=[A-Za-z0-9])/$1\*/gs;
726: # )( -> )*(; ) ( -> )*(
727: $expression=~s/\)\s*\(/\)\*\(/gs;
728: # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
729: $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
730: # a ( -> a*(
731: $expression=~s/([A-Za-z0-9])\s+\(/$1\*\(/gs;
732: # )a -> )*a; )3 -> )*3; ) 3 -> )*3
733: $expression=~s/\)\s*([A-Za-z0-9])/\)\*$1/gs;
734: # 3&8 -> 3e8; 3&-4 -> 3e-4
735: $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
736: return $expression;
737: }
738:
739: sub start_answer {
740: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
741: my $result;
742: push(@Apache::response::custom_answer,
743: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser));
744: push(@Apache::response::custom_answer_type,
745: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)));
746: $Apache::response::custom_answer_type[-1] =~ s/\s+//g;
747: if ($target eq "edit" ) {
748: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
749: $result.=&Apache::edit::editfield($token->[1],
750: $Apache::response::custom_answer[-1],
751: '',80,4);
752: } elsif ( $target eq "modified" ) {
753: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
754: }
755: return $result;
756: }
757:
758: sub end_answer {
759: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
760: if ($target eq 'edit' ) {
761: return &Apache::edit::end_table();
762: }
763: }
764:
765: sub decide_package {
766: my ($tagstack)=@_;
767: my $package;
768: if ($$tagstack[-1] eq 'parameter') {
769: $package='part';
770: } else {
771: my $i=-1;
772: while (defined($$tagstack[$i])) {
773: if ($$tagstack[$i] =~ /(response|hint)$/) {
774: $package=$$tagstack[$i];
775: last;
776: }
777: $i--;
778: }
779: }
780: return $package;
781: }
782:
783: sub start_responseparam {
784: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
785: my $result='';
786: if ($target eq 'meta') {
787: $result = &meta_parameter_write($token->[2]->{'name'},
788: $token->[2]->{'type'},
789: $token->[2]->{'default'},
790: $token->[2]->{'description'});
791: } elsif ($target eq 'edit') {
792: $result.=&Apache::edit::tag_start($target,$token);
793: my $optionlist;
794: my $package=&decide_package($tagstack);
795: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
796: if ($key =~ /^\Q$package\E&(.*)&display$/) {
797: $optionlist.='<option value="'.$1.'">'.
798: $Apache::lonnet::packagetab{$key}.'</option>';
799: }
800: }
801: if (defined($optionlist)) {
802: $result.=&mt('Use template:').' <select name="'.
803: &Apache::edit::html_element_name('parameter_package').'">'.
804: '<option value=""></option>'.$optionlist.'</select><br />';
805: }
806: $result.=&Apache::edit::text_arg('Name:','name',$token).
807: &Apache::edit::text_arg('Type:','type',$token).
808: &Apache::edit::text_arg('Description:','description',$token).
809: &Apache::edit::text_arg('Default:','default',$token).
810: "</td></tr>";
811: $result.=&Apache::edit::end_table;
812: } elsif ($target eq 'modified') {
813: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
814: $safeeval,'name','type',
815: 'description','default');
816: my $element=&Apache::edit::html_element_name('parameter_package');
817: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
818: my $name=$env{"form.$element"};
819: my $tag=&decide_package($tagstack);
820: $token->[2]->{'name'}=$name;
821: $token->[2]->{'type'}=
822: $Apache::lonnet::packagetab{"$tag&$name&type"};
823: $token->[2]->{'description'}=
824: $Apache::lonnet::packagetab{"$tag&$name&display"};
825: $token->[2]->{'default'}=
826: $Apache::lonnet::packagetab{"$tag&$name&default"};
827: $token->[3] = ['name','type','description','default'];
828: $constructtag=1;
829: }
830: if ($constructtag) {
831: $result = &Apache::edit::rebuild_tag($token);
832: }
833: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
834: $target eq 'tex' || $target eq 'analyze' ) {
835: if ($env{'request.state'} eq 'construct') {
836: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
837: my $default=&Apache::lonxml::get_param('default',$parstack,
838: $safeeval);
839: if ($name) {$Apache::inputtags::params{$name}=$default;}
840: }
841: }
842: return $result;
843: }
844:
845: sub end_responseparam {
846: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
847: if ($target eq 'edit') { return ('','no'); }
848: return '';
849: }
850:
851: sub start_parameter {
852: return &start_responseparam(@_);
853: }
854:
855: sub end_parameter {
856: return &end_responseparam(@_);
857: }
858:
859: sub reset_params {
860: %Apache::inputtags::params=();
861: }
862:
863: sub setup_params {
864: my ($tag,$safeeval) = @_;
865:
866: if ($env{'request.state'} eq 'construct') { return; }
867: my %paramlist=();
868: foreach my $key (keys(%Apache::lonnet::packagetab)) {
869: if ($key =~ /^\Q$tag\E/) {
870: my ($package,$name) = split(/&/,$key);
871: $paramlist{$name}=1;
872: }
873: }
874: foreach my $key (keys(%paramlist)) {
875: my $entry= 'resource.'.$Apache::inputtags::part;
876: if (defined($Apache::inputtags::response[-1])) {
877: $entry.='_'.$Apache::inputtags::response[-1];
878: }
879: $entry.='.'.$key;
880: &Apache::lonxml::debug("looking for $entry");
881: my $value = &Apache::lonnet::EXT("$entry");
882: &Apache::lonxml::debug("$key has value :$value:");
883: if ($value eq 'con_lost' || $value =~ /^error:/) {
884: &Apache::lonxml::debug("using nothing");
885: $Apache::inputtags::params{$key}='';
886: } else {
887: my $string="{return qq\0".$value."\0}";
888: my $newvalue=&Apache::run::run($string,$safeeval,1);
889: if (defined($newvalue)) { $value=$newvalue; }
890: $Apache::inputtags::params{$key}=$value;
891: }
892: }
893: }
894:
895: {
896: my @answer_bits;
897: my $need_row_start;
898:
899: sub answer_header {
900: my ($type,$increment,$rows) = @_;
901: my $result;
902: if ($env{'form.answer_output_mode'} eq 'tex') {
903: undef(@answer_bits);
904: my $bit;
905: if ($Apache::lonhomework::type eq 'exam') {
906: $bit = ($Apache::lonxml::counter+$increment).') ';
907: } else {
908: $bit .= ' '.&mt('Answer for Part: [_1]',
909: '\verb|'.$Apache::inputtags::part.'|').' ';
910: }
911: push(@answer_bits,$bit);
912: } else {
913: my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
914: $result = '<table border="1"><tr>';
915: if ($Apache::lonhomework::type eq 'exam') {
916: $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
917: } else {
918: $result .= $td.&mt('Answer for Part: [_1]',
919: $Apache::inputtags::part).'</td>';
920: }
921: $result .= "\n";
922: $need_row_start = 0;
923: }
924: return $result;
925: }
926:
927: sub next_answer {
928: my ($type) = @_;
929: my $result;
930: if ($env{'form.answer_output_mode'} eq 'tex') {
931: # FIXME ... need to do something with tex mode
932: } else {
933: $result .= "</tr>";
934: $need_row_start = 1;
935: }
936: return $result;
937: }
938:
939: sub answer_part {
940: my ($type,$answer,$args) = @_;
941: my $result;
942: if ($env{'form.answer_output_mode'} eq 'tex') {
943: if (!$args->{'no_verbatim'}) {
944: my $to_use='|';
945: foreach my $value (32..126) {
946: my $char=pack('c',$value);
947: if ($answer !~ /\Q$char\E/) {
948: $to_use=$char;
949: last;
950: }
951: }
952: my $fullanswer=$answer;
953: $answer='';
954: foreach my $element (split(/[\;]/,$fullanswer)) {
955: if ($element ne '') {
956: $answer.= '\verb'.$to_use.$element.$to_use.' \newline';
957: }
958: }
959: }
960: if ($answer ne '') {
961: push(@answer_bits,$answer);
962: }
963: } else {
964: if ($need_row_start) {
965: $result .= '<tr>';
966: $need_row_start = 0;
967: }
968: $result .= '<td>'.$answer.'</td>';
969: }
970: return $result;
971: }
972:
973: sub answer_footer {
974: my ($type) = @_;
975: my $result;
976: if ($env{'form.answer_output_mode'} eq 'tex') {
977: $result = ' \vskip 0 mm \noindent \begin{tabular}{|p{1.5cm}|p{6.8cm}|}\hline ';
978: $result .= $answer_bits[0].'&\vspace*{-4mm}\begin{itemize}';
979: for (my $i=1;$i<=$#answer_bits;$i++) {
980: $result.='\item '.$answer_bits[$i].'\vspace*{-7mm}';
981: }
982: $result .= ' \end{itemize} \\\\ \hline \end{tabular} \vskip 0 mm ';
983: } else {
984: if (!$need_row_start) {
985: $result .= '</tr>';
986: }
987: $result .= '</table>';
988: }
989: return $result;
990: }
991:
992: }
993:
994: sub showallfoils {
995: if (defined($env{'form.showallfoils'})) {
996: my ($symb)=&Apache::lonnet::whichuser();
997: if (($env{'request.state'} eq 'construct') ||
998: ($env{'user.adv'} && $symb eq '') ||
999: ($Apache::lonhomework::viewgrades) ) {
1000: return 1;
1001: }
1002: }
1003: if ($Apache::lonhomework::type eq 'survey') { return 1; }
1004: if ($Apache::lonhomework::type eq 'surveycred') { return 1; }
1005: if ($Apache::lonhomework::type eq 'anonsurvey') { return 1; }
1006: if ($Apache::lonhomework::type eq 'anonsurveycred') { return 1; }
1007:
1008: return 0;
1009: }
1010:
1011: =pod
1012:
1013: =item &getresponse();
1014:
1015: Retreives the current submitted response, helps out in the case of
1016: scantron mode.
1017:
1018: Returns either the exact text of the submission, or a bubbled response
1019: converted to something usable.
1020:
1021: Optional Arguments:
1022: $offset - (defaults to 1) if a problem has more than one bubble
1023: response, pass in the number of the bubble wanted, (the
1024: first bubble associated with a problem has an offset of 1,
1025: the second bubble is 2
1026:
1027: $resulttype - undef -> a number between 0 and 25
1028: 'A is 1' -> a number between 1 and 26
1029: 'letter' -> a letter between 'A' and 'Z'
1030: $lines - undef problem only needs a single line of bubbles.
1031: nonzero Problem wants the first nonempty response in
1032: $lines lines of bubbles.
1033: $bubbles_per_line - Must be provided if lines is defined.. number of
1034: bubbles on a line.
1035:
1036: =cut
1037:
1038: sub getresponse {
1039: my ($offset,$resulttype, $lines, $bubbles_per_line)=@_;
1040: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
1041: my $response;
1042: if (!defined($offset)) {
1043: $offset=1;
1044: } else {
1045: $formparm.=":$offset";
1046: }
1047: if (!defined($lines)) {
1048: $lines = 1;
1049: }
1050: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
1051: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
1052: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
1053: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
1054: if ($env{'form.submitted'} eq 'scantron') {
1055: my $part = $Apache::inputtags::part;
1056: my $id = $Apache::inputtags::response[-1];
1057:
1058: my $line;
1059: my $startline = $env{'form.scantron_questnum_start.'.$part.'.'.$id};
1060: if (!$startline) {
1061: $startline = $Apache::lonxml::counter;
1062: }
1063: for ($line = 0; $line < $lines; $line++) {
1064: my $theline = $startline+$offset-1+$line;
1065: $response = $env{"scantron.$theline.answer"};
1066: if ((defined($response)) && ($response ne "") && ($response ne " ")) {
1067: last;
1068: }
1069:
1070: }
1071:
1072: # save bubbled letter for later
1073: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
1074: $response;
1075: if ($resulttype ne 'letter') {
1076: $response = $let_to_num{$response};
1077: if ($resulttype eq 'A is 1') {
1078: if ($response ne "") {
1079: $response = $response+1;
1080: }
1081: }
1082: if ($response ne "") {
1083: $response += $line * $bubbles_per_line;
1084: }
1085: } else {
1086: if ($response ne "") {
1087: my $raw = $response;
1088: $response = chr(ord($response) + $line * $bubbles_per_line);
1089: }
1090: }
1091:
1092: } else {
1093: $response = $env{$formparm};
1094: }
1095: #
1096: # If we have a nonempty answer, correct the numeric value
1097: # of the answer for the line on which it was found.
1098: #
1099:
1100: return $response;
1101: }
1102:
1103: =pod
1104:
1105: =item &repetition();
1106:
1107: In scalar context:
1108:
1109: returns: the number of lines that are required to encode the weight.
1110: (Default is for 10 bubbles per bubblesheet item; other (integer)
1111: values can be specified by using a custom Bubblesheet format file
1112: with an eighteenth entry (BubblesPerRow) set to the integer
1113: appropriate for the bubblesheets which will be used to assign weights.
1114:
1115: In array context:
1116:
1117: returns: number of lines required to encode weight, and bubbles/line.
1118:
1119: =cut
1120:
1121: sub repetition {
1122: my $id = $Apache::inputtags::part;
1123: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1124: if (!defined($weight) || ($weight eq '')) { $weight=1; }
1125: my $bubbles_per_row;
1126: if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
1127: ($env{'form.bubbles_per_row'} > 0)) {
1128: $bubbles_per_row = $env{'form.bubbles_per_row'};
1129: } else {
1130: $bubbles_per_row = 10;
1131: }
1132: my $denominator = $bubbles_per_row;
1133: if (($env{'form.scantron_lastbubblepoints'} == 0) &&
1134: ($bubbles_per_row > 1)) {
1135: $denominator = $bubbles_per_row - 1;
1136: }
1137: my $repetition = int($weight/$denominator);
1138: if ($weight % $denominator != 0) { $repetition++; }
1139: if (wantarray) {
1140: return ($repetition,$bubbles_per_row);
1141: }
1142: return $repetition;
1143:
1144: }
1145:
1146: =pod
1147:
1148: =item &scored_response();
1149:
1150: Sets the results hash elements
1151:
1152: resource.$part_id.$response_id.awarded - to the floating point
1153: number between 0 and 1 that was awarded on the bubbled input
1154:
1155: resource.$part_id.$response_id.awarddetail - to 'ASSIGNED_SCORE'
1156:
1157: Returns
1158:
1159: the number of bubble sheet lines that were used (and likely need to
1160: be passed to &Apache::lonxml::increment_counter()
1161:
1162: Arguments
1163:
1164: $part_id - id of the part to grade
1165: $response_id - id of the response to grade
1166:
1167:
1168: =cut
1169:
1170: sub scored_response {
1171: my ($part,$id)=@_;
1172: my $repetition=&repetition();
1173: my $bubbles_per_row;
1174: if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
1175: ($env{'form.bubbles_per_row'} > 0)) {
1176: $bubbles_per_row = $env{'form.bubbles_per_row'};
1177: } else {
1178: $bubbles_per_row = 10;
1179: }
1180: my $score=0;
1181: for (my $i=0;$i<$repetition;$i++) {
1182: # A is 1, B is 2, etc.
1183: my $increase=&Apache::response::getresponse($i+1);
1184: unless (($increase == $bubbles_per_row-1) &&
1185: ($env{'form.scantron_lastbubblepoints'} == 0)) {
1186: # (get response return 0-9 and then we add 1)
1187: if ($increase ne '') {
1188: $score+=$increase+1;
1189: }
1190: }
1191: }
1192: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1193: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1194: my $pcr=$score/$weight;
1195: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
1196: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
1197: 'ASSIGNED_SCORE';
1198: return $repetition;
1199: }
1200:
1201: sub whichorder {
1202: my ($max,$randomize,$showall,$hash,$rndseed)=@_;
1203: #&Apache::lonxml::debug("man $max randomize $randomize");
1204: my @names;
1205: if (ref($hash->{'names'}) eq 'ARRAY') {
1206: @names = @{$hash->{'names'}};
1207: }
1208: return if (!@names);
1209: my @whichopt =();
1210: my (%top,@toplist,%bottom,@bottomlist);
1211: if (!($showall || ($randomize eq 'no'))) {
1212: my $current=0;
1213: foreach my $name (@names) {
1214: $current++;
1215: if ($$hash{"$name.location"} eq 'top') {
1216: $top{$name}=$current;
1217: } elsif ($$hash{"$name.location"} eq 'bottom') {
1218: $bottom{$name}=$current;
1219: }
1220: }
1221: }
1222: my $topcount=0;
1223: my $bottomcount=0;
1224: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
1225: && ($#names > -1)) {
1226: #&Apache::lonxml::debug("Have $#whichopt max is $max");
1227: my $aopt;
1228: if ($showall || ($randomize eq 'no')) {
1229: $aopt=0;
1230: } else {
1231: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1232: }
1233: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
1234: $aopt=splice(@names,$aopt,1);
1235: #&Apache::lonxml::debug("Picked $aopt");
1236: if ($top{$aopt}) {
1237: $toplist[$top{$aopt}]=$aopt;
1238: $topcount++;
1239: } elsif ($bottom{$aopt}) {
1240: $bottomlist[$bottom{$aopt}]=$aopt;
1241: $bottomcount++;
1242: } else {
1243: push (@whichopt,$aopt);
1244: }
1245: }
1246: for (my $i=0;$i<=$#toplist;$i++) {
1247: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
1248: }
1249: for (my $i=0;$i<=$#bottomlist;$i++) {
1250: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
1251: }
1252: return @whichopt;
1253: }
1254:
1255: sub show_answer {
1256: my $part = $Apache::inputtags::part;
1257: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
1258: my $status = $Apache::inputtags::status[-1];
1259: my $canshow = 0;
1260: if ($award =~ /^correct/) {
1261: if (($Apache::lonhomework::history{"resource.$part.awarded"} >= 1) ||
1262: (&Apache::lonnet::EXT("resource.$part.retrypartial") !~/^1|on|yes$/)) {
1263: $canshow = 1;
1264: }
1265: }
1266: return (($canshow && &Apache::lonhomework::show_problem_status())
1267: || $status eq "SHOW_ANSWER");
1268: }
1269:
1270: sub analyze_store_foilgroup {
1271: my ($shown,$attrs)=@_;
1272: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1273: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
1274: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
1275: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
1276: foreach my $attr (@$attrs) {
1277: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
1278: $Apache::response::foilgroup{"$name.".$attr};
1279: }
1280: }
1281: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1282: }
1283:
1284: sub check_if_computed {
1285: my ($token,$parstack,$safeeval,$name)=@_;
1286: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1287: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1288: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1289: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
1290: }
1291: }
1292:
1293: sub pick_foil_for_concept {
1294: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
1295: my @names;
1296: if (ref($Apache::response::conceptgroup{'names'}) eq 'ARRAY') {
1297: @names = @{ $Apache::response::conceptgroup{'names'} };
1298: }
1299: return if (!@names);
1300: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
1301: my $name=$names[$pick];
1302: push @{ $Apache::response::foilgroup{'names'} }, $name;
1303: foreach my $attr (@$attrs) {
1304: $Apache::response::foilgroup{"$name.".$attr} =
1305: $Apache::response::conceptgroup{"$name.".$attr};
1306: }
1307: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
1308: $Apache::response::foilgroup{"$name.concept"} = $concept;
1309: &Apache::lonxml::debug("Selecting $name in $concept");
1310: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1311: if ($target eq 'analyze') {
1312: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
1313: $concept);
1314: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
1315: $Apache::response::conceptgroup{'names'};
1316: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
1317: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
1318: $name);
1319: foreach my $attr (@$attrs) {
1320: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
1321: $Apache::response::conceptgroup{"$name.$attr"};
1322: }
1323: }
1324: }
1325: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
1326: $hinthash->{"$part_id.concept.$concept"}=
1327: $Apache::response::conceptgroup{'names'};
1328:
1329: }
1330:
1331: =pod
1332:
1333: =item get_response_param()
1334:
1335: Get a parameter associated with a problem.
1336: Parameters:
1337: $id - the id of the paramater, either a part id,
1338: or a partid and responspe id joined by _
1339: $name - Name of the parameter to fetch
1340: $default - Default value for the paramter.
1341:
1342: =cut
1343:
1344: sub get_response_param {
1345: my ($id,$name,$default)=@_;
1346: my $parameter;
1347: if ($env{'request.state'} eq 'construct' &&
1348: defined($Apache::inputtags::params{$name})) {
1349: $parameter=$Apache::inputtags::params{$name};
1350: } else {
1351: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
1352: }
1353: if (!defined($parameter) || $parameter eq '') {
1354: $parameter = $default;
1355: }
1356: return $parameter;
1357: }
1358:
1359: sub submitted {
1360: my ($who)=@_;
1361:
1362: # when scatron grading any submission is a submission
1363: if ($env{'form.submitted'} eq 'scantron') { return 1; }
1364: # if the caller only cared if this was a scantron submission
1365: if ($who eq 'scantron') { return 0; }
1366: # if the Submit Answer button for this particular part was pressed
1367: my $partid=$Apache::inputtags::part;
1368: if ($env{'form.submitted'} eq "part_$partid") {
1369: return 1;
1370: }
1371: if ($env{'form.submitted'} eq "yes"
1372: && defined($env{'form.submit_'.$partid})) {
1373: return 1;
1374: }
1375: # Submit All button on a .page was pressed
1376: if (defined($env{'form.all_submit'})) { return 1; }
1377: # otherwise no submission occurred
1378: return 0;
1379: }
1380:
1381: sub add_to_gradingqueue {
1382: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1383: if ( $courseid eq ''
1384: || $symb eq ''
1385: || $env{'request.state'} eq 'construct'
1386: || $Apache::lonhomework::type ne 'problem') {
1387: return;
1388: }
1389:
1390: my %queue_info = ( 'type' => 'problem',
1391: 'time' => time);
1392:
1393: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
1394: $queue_info{'slot'}=
1395: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
1396: }
1397:
1398: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
1399: if ($result ne 'ok') {
1400: &Apache::lonxml::error("add_to_queue said $result");
1401: }
1402: }
1403:
1404: =pod
1405:
1406: =item check_status()
1407:
1408: basically undef and 0 (both false) mean that they still have work to do
1409: and all true values mean that they can't do any more work
1410:
1411: a return of undef means it is unattempted
1412: a return of 0 means it is attmpted and wrong but still has tries
1413: a return of 1 means it is marked correct
1414: a return of 2 means they have exceed maximum number of tries
1415: a return of 3 means it after the answer date
1416:
1417: =cut
1418:
1419: sub check_status {
1420: my ($id)=@_;
1421: if (!defined($id)) { $id=$Apache::inputtags::part; }
1422: my $curtime=&Apache::lonnet::EXT('system.time');
1423: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
1424: my $duedate=&Apache::lonhomework::due_date($id);
1425: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
1426: if ( $opendate && $curtime > $opendate &&
1427: $duedate && $curtime > $duedate &&
1428: $answerdate && $curtime > $answerdate) {
1429: return 3;
1430: }
1431: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1432: if ($status =~ /^correct/) { return 1; }
1433: if (!$status) { return undef; }
1434: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
1435: if ($maxtries eq '') { $maxtries=2; }
1436: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
1437: if ($curtries < $maxtries) { return 0; }
1438: return 2;
1439: }
1440:
1441: =pod
1442:
1443: =item setup_prior_tries_hash()
1444:
1445: Foreach each past .submission $func is called with 3 arguments
1446: - the mode to set things up for (currently always 'grade')
1447: - the stored .submission string
1448: - The expansion of $data
1449:
1450: $data is an array ref containing elements that are either
1451: - scalars that are other elements of the history hash to pass to $func
1452: - ref to data to be passed untouched to $func
1453:
1454: $questiontype is the questiontype (currently only passed in if
1455: randomizebytry.
1456:
1457: =cut
1458:
1459: sub setup_prior_tries_hash {
1460: my ($func,$data,$questiontype) = @_;
1461: my $part = $Apache::inputtags::part;
1462: my $id = $Apache::inputtags::response[-1];
1463: foreach my $i (1..$Apache::lonhomework::history{'version'}) {
1464: my $partprefix = "$i:resource.$part";
1465: my $sub_key = "$partprefix.$id.submission";
1466: next if (!exists($Apache::lonhomework::history{$sub_key}));
1467: my $type_key = "$partprefix.type";
1468: my $type = $Apache::lonhomework::history{$type_key};
1469: my @other_data;
1470: if (ref($data) eq 'ARRAY') {
1471: foreach my $datum (@{ $data }) {
1472: if (ref($datum)) {
1473: push(@other_data,$datum);
1474: } else {
1475: my $info_key = "$i:resource.$part.$id.$datum";
1476: push(@other_data,$Apache::lonhomework::history{$info_key});
1477: }
1478: }
1479: }
1480: if ($questiontype eq 'randomizetry') {
1481: my $order_key = "$partprefix.$id.foilorder";
1482: my @whichopts = &Apache::lonnet::str2array($Apache::lonhomework::history{$order_key});
1483: if (@whichopts > 0) {
1484: shift(@other_data);
1485: unshift(@other_data,\@whichopts);
1486: }
1487: }
1488: my $output =
1489: &$func('grade',
1490: $Apache::lonhomework::history{$sub_key},
1491: \@other_data);
1492: if (defined($output)) {
1493: $Apache::inputtags::submission_display{$sub_key} = $output;
1494: }
1495: }
1496: }
1497:
1498: 1;
1499: __END__
1500:
1501: =pod
1502:
1503: =cut
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