1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.217 2010/02/28 23:44:36 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: =pod
30:
31: =head1 NAME
32:
33: Apache::resonse.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::lonmaxima();
57: use Apache::lonr();
58:
59: BEGIN {
60: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
61: }
62:
63: sub start_response {
64: my ($parstack,$safeeval)=@_;
65: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
66: if ($#Apache::inputtags::import > -1) {
67: &Apache::lonxml::debug("Turning :$id: into");
68: $id = join('_',@Apache::inputtags::import).'_'.$id;
69: &Apache::lonxml::debug("New :$id:");
70: }
71: push (@Apache::inputtags::response,$id);
72: push (@Apache::inputtags::responselist,$id);
73: @Apache::inputtags::inputlist=();
74: if ($Apache::inputtags::part eq '' &&
75: !$Apache::lonhomework::ignore_response_errors) {
76: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
77: }
78: if ($Apache::inputtags::response_with_no_part &&
79: $Apache::inputtags::part ne '0') {
80: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
81: }
82: if ($Apache::inputtags::part eq '0') {
83: $Apache::inputtags::response_with_no_part=1;
84: }
85: return $id;
86: }
87:
88: sub end_response {
89: #pop @Apache::inputtags::response;
90: @Apache::inputtags::inputlist=();
91: return '';
92: }
93:
94: sub start_hintresponse {
95: my ($parstack,$safeeval)=@_;
96: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
97: push (@Apache::inputtags::hint,$id);
98: push (@Apache::inputtags::hintlist,$id);
99: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
100: return $id;
101: }
102:
103: sub end_hintresponse {
104: pop @Apache::inputtags::hint;
105: if (defined($Apache::inputtags::paramstack[-1])) {
106: %Apache::inputtags::params=
107: @{ pop(@Apache::inputtags::paramstack) };
108: }
109: return '';
110: }
111:
112: my @randomseeds;
113: sub pushrandomnumber {
114: my $rand_alg=&Apache::lonnet::get_rand_alg();
115: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
116: $rand_alg eq '64bit2') {
117: # do nothing
118: } else {
119: my @seed=&Math::Random::random_get_seed();
120: push(@randomseeds,\@seed);
121: }
122: &Apache::response::setrandomnumber(@_);
123: }
124: sub poprandomnumber {
125: my $rand_alg=&Apache::lonnet::get_rand_alg();
126: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
127: $rand_alg eq '64bit2') {
128: return;
129: }
130: my $seed=pop(@randomseeds);
131: if ($seed) {
132: &Math::Random::random_set_seed(@$seed);
133: } else {
134: &Apache::lonxml::error("Unable to restore random algorithm.");
135: }
136: }
137:
138: sub setrandomnumber {
139: my ($ignore_id2) = @_;
140: my $rndseed;
141: $rndseed=&Apache::structuretags::setup_rndseed();
142: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
143: &Apache::lonxml::debug("randseed $rndseed");
144: # $rndseed=unpack("%32i",$rndseed);
145: my $rand_alg=&Apache::lonnet::get_rand_alg();
146: my ($rndmod,$rndmod2);
147:
148: my ($id1,$id2,$shift_amt);
149: if ($Apache::lonhomework::parsing_a_problem) {
150: $id1=$Apache::inputtags::part;
151: if (defined($Apache::inputtags::response[-1])) {
152: $id2=$Apache::inputtags::response[-1];
153: }
154: $shift_amt=scalar(@Apache::inputtags::responselist);
155: } elsif ($Apache::lonhomework::parsing_a_task) {
156: $id1=&Apache::bridgetask::get_dim_id();
157: if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
158: $id2=$Apache::bridgetask::instance{$id1}[-1];
159: $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
160: } else {
161: $shift_amt=0;
162: }
163: }
164: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
165: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
166: $rand_alg eq '64bit2') {
167: $rndmod=(&Apache::lonnet::numval($id1) << 10);
168: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
169: } elsif ($rand_alg eq '64bit3') {
170: $rndmod=(&Apache::lonnet::numval2($id1) << 10);
171: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
172: } elsif ($rand_alg eq '64bit4') {
173: my $shift=(4*$shift_amt)%30;
174: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
175: if (defined($id2)) {
176: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
177: }
178: } else {
179: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
180: }
181:
182: if ($rndseed =~/([,:])/) {
183: my $char=$1;
184: use integer;
185: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
186: $num1+=$rndmod;
187: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
188: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
189: $rndseed=$num1.$char.$num2;
190: } else {
191: $rndseed+=$rndmod;
192: if($Apache::lonnet::_64bit) {
193: use integer;
194: $rndseed=(($rndseed<<32)>>32);
195: }
196: }
197: &Apache::lonxml::debug("randseed $rndmod $rndseed");
198: &Apache::lonnet::setup_random_from_rndseed($rndseed);
199: return '';
200: }
201:
202: sub meta_parameter_write {
203: my ($name,$type,$default,$display)=@_;
204: my $partref=$Apache::inputtags::part;
205: my $result='<parameter part="'.$Apache::inputtags::part.'"';
206: if (defined($Apache::inputtags::response[-1])) {
207: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
208: $partref.='_'.$Apache::inputtags::response[-1];
209: }
210: $result.= ' name="'.$name.'"'.
211: ' type="'.$type.'"'.
212: (defined($default)?' default="'.$default.'"':'').
213: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
214: .'></parameter>'
215: ."\n";
216: return $result;
217: }
218:
219: sub meta_package_write {
220: my $name=shift;
221: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
222: if(defined($Apache::inputtags::response[-1])) {
223: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
224: }
225: $result.=' package="'.$name.'"></parameter>'."\n";
226: return $result;
227: }
228:
229: sub meta_stores_write {
230: my ($name,$type,$display)=@_;
231: my $partref=$Apache::inputtags::part;
232: my $result = '<stores part="'.$Apache::inputtags::part.'"';
233: if (defined($Apache::inputtags::response[-1])) {
234: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
235: $partref.='_'.$Apache::inputtags::response[-1];
236: }
237: $result.= ' name="'.$name.'"'.
238: ' type="'.$type.'"'.
239: ' display="'.$display.' [Part: '.$partref.']"'.
240: "></stores>\n";
241: }
242:
243: =pod
244:
245: =item mandatory_part_meta()
246:
247: Autogenerate metadata for mandatory
248: input (from RAT or lonparmset) and
249: output (to lonspreadsheet)
250: of each part
251:
252: Note: responseid-specific data 'submission' and 'awarddetail'
253: not available to spreadsheet -> skip here
254:
255: =cut
256:
257:
258: sub mandatory_part_meta {
259: return &meta_package_write('part').
260: &meta_stores_write('solved','string','Problem Status').
261: &meta_stores_write('tries','int_zeropos','Number of Attempts').
262: &meta_stores_write('awarded','float','Partial Credit Factor');
263: }
264:
265: sub meta_part_order {
266: if (@Apache::inputtags::partlist) {
267: my @parts=@Apache::inputtags::partlist;
268: shift(@parts);
269: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
270: } else {
271: return '<partorder>0</partorder>'."\n";
272: }
273: }
274:
275: sub meta_response_order {
276: if (@Apache::inputtags::responselist) {
277: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
278: '</responseorder>'."\n";
279: }
280: }
281:
282: sub check_for_previous {
283: my ($curresponse,$partid,$id,$last) = @_;
284: my %previous;
285: $previous{'used'} = 0;
286: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
287: if ($key =~ /resource\.\Q$partid\E\.\Q$id\E\.submission$/) {
288: if ( $last && $key =~ /^(\d+):/ ) {
289: next if ($1 >= $last);
290: }
291: &Apache::lonxml::debug("Trying $key");
292: my $pastresponse=$Apache::lonhomework::history{$key};
293: if ($pastresponse eq $curresponse) {
294: $previous{'used'} = 1;
295: my $history;
296: if ( $key =~ /^(\d+):/ ) {
297: $history=$1;
298: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
299: $previous{'last'}='0';
300: push(@{ $previous{'version'} },$history);
301: } else {
302: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
303: $previous{'last'}='1';
304: }
305: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
306: if ($previous{'award'} eq 'INTERNAL_ERROR') { $previous{'used'}=0; }
307: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
308: }
309: }
310: }
311: &Apache::lonhomework::showhash(%previous);
312: return %previous;
313: }
314:
315: sub handle_previous {
316: my ($previous,$ad)=@_;
317: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
318: if ($$previous{'last'}) {
319: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
320: push(@Apache::inputtags::previous_version,$$previous{'version'});
321: } elsif (($Apache::lonhomework::type ne 'survey') &&
322: ($Apache::lonhomework::type ne 'surveycred') &&
323: ($Apache::lonhomework::type ne 'anonsurvey') &&
324: ($Apache::lonhomework::type ne 'anonsurveycred')) {
325: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
326: push(@Apache::inputtags::previous_version,$$previous{'version'});
327: }
328: }
329: }
330:
331: sub view_or_modify {
332: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
333: my $myself=0;
334: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
335: $myself=1;
336: }
337: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
338: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
339: if ($mgr) { return "M"; }
340: if ($vgr) { return "V"; }
341: if ($myself) { return "V"; }
342: return '';
343: }
344:
345: sub start_dataresponse {
346: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
347: my $id = &Apache::response::start_response($parstack,$safeeval);
348: my $result;
349: if ($target eq 'web') {
350: $result = $token->[2]->{'display'}.':';
351: } elsif ($target eq 'meta') {
352: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
353: $token->[2]->{'type'},
354: $token->[2]->{'display'});
355: $result .= &Apache::response::meta_package_write('dataresponse');
356: }
357: return $result;
358: }
359:
360: sub end_dataresponse {
361: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
362: my $result;
363: if ( $target eq 'web' ) {
364: } elsif ($target eq 'grade' ) {
365: if ( defined $env{'form.submitted'}) {
366: my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
367: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
368: if ($allowed) {
369: &Apache::response::setup_params('dataresponse',$safeeval);
370: my $partid = $Apache::inputtags::part;
371: my $id = $Apache::inputtags::response['-1'];
372: my $response = $env{'form.HWVAL_'.$id};
373: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
374: if ( $response =~ /[^\s]/) {
375: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
376: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
377: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
378: }
379: } else {
380: $result='Not Permitted to change values.'
381: }
382: }
383: }
384: &Apache::response::end_response;
385: return $result;
386: }
387:
388: sub start_customresponse {
389: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
390: my $id = &Apache::response::start_response($parstack,$safeeval);
391: push(@Apache::lonxml::namespace,'customresponse');
392: my $result;
393: @Apache::response::custom_answer=();
394: @Apache::response::custom_answer_type=();
395: &Apache::lonxml::register('Apache::response',('answer'));
396: if ($target eq 'web') {
397: if ( &Apache::response::show_answer() ) {
398: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
399: $safeeval);
400: $Apache::inputtags::answertxt{$id}=[$answer];
401: }
402: } elsif ($target eq 'edit') {
403: $result.=&Apache::edit::tag_start($target,$token);
404: $result.=&Apache::edit::text_arg('String to display for answer:',
405: 'answerdisplay',$token);
406: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
407: } elsif ($target eq 'modified') {
408: my $constructtag;
409: $constructtag=&Apache::edit::get_new_args($token,$parstack,
410: $safeeval,'answerdisplay');
411: if ($constructtag) {
412: $result = &Apache::edit::rebuild_tag($token);
413: }
414: } elsif ($target eq 'answer' || $target eq 'grade') {
415: &Apache::response::reset_params();
416: } elsif ($target eq 'meta') {
417: $result .= &Apache::response::meta_package_write('customresponse');
418: }
419: return $result;
420: }
421:
422: sub end_customresponse {
423: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
424: my $result;
425: my $part=$Apache::inputtags::part;
426: my $id=$Apache::inputtags::response[-1];
427: if ( $target eq 'grade' && &Apache::response::submitted() ) {
428: my $response = &Apache::response::getresponse();
429: if ($Apache::lonhomework::type eq 'exam' ||
430: &Apache::response::submitted('scantron')) {
431: &Apache::response::scored_response($part,$id);
432: } elsif ( $response =~ /[^\s]/ &&
433: $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
434: if (!$Apache::lonxml::default_homework_loaded) {
435: &Apache::lonxml::default_homework_load($safeeval);
436: }
437: my %previous = &Apache::response::check_for_previous($response,
438: $part,$id);
439: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
440: $response;
441: my $error;
442: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
443: $response;
444:
445: my ($award,$score) = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
446: if (!&Apache::inputtags::valid_award($award)) {
447: $error = $award;
448: $award = 'ERROR';
449: }
450: &Apache::response::handle_previous(\%previous,$award);
451: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
452: $award;
453: if ($award eq 'ASSIGNED_SCORE') {
454: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=1.0*$score;
455: }
456: if ($error) {
457: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
458: $error;
459: }
460: }
461: } elsif ( $target eq 'answer') {
462: $result = &Apache::response::answer_header('customresponse');
463: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
464: $safeeval);
465: if ($env{'form.answer_output_mode'} ne 'tex') {
466: $answer = '<b>'.$answer.'</b>';
467: }
468: $result .= &Apache::response::answer_part('customresponse',$answer);
469: $result .= &Apache::response::answer_footer('customresponse');
470: }
471: if ($target eq 'web') {
472: &setup_prior_tries_hash(\&format_prior_response_math);
473: }
474: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
475: $target eq 'tex' || $target eq 'analyze') {
476: &Apache::lonxml::increment_counter(&Apache::response::repetition(),
477: "$part.$id");
478: if ($target eq 'analyze') {
479: $Apache::lonhomework::analyze{"$part.$id.type"} = 'customresponse';
480: &Apache::lonhomework::set_bubble_lines();
481: }
482: }
483: pop(@Apache::lonxml::namespace);
484: pop(@Apache::response::custom_answer);
485: pop(@Apache::response::custom_answer_type);
486: &Apache::lonxml::deregister('Apache::response',('answer'));
487: &Apache::response::end_response();
488: return $result;
489: }
490:
491: sub format_prior_response_custom {
492: my ($mode,$answer) =@_;
493: return '<span class="LC_prior_custom">'.
494: &HTML::Entities::encode($answer,'"<>&').'</span>';
495: }
496:
497: sub start_mathresponse {
498: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
499: my $id = &Apache::response::start_response($parstack,$safeeval);
500: push(@Apache::lonxml::namespace,'mathresponse');
501: my $result;
502: @Apache::response::custom_answer=();
503: @Apache::response::custom_answer_type=();
504: &Apache::lonxml::register('Apache::response',('answer'));
505: if ($target eq 'web') {
506: if ( &Apache::response::show_answer() ) {
507: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
508: $safeeval);
509: $Apache::inputtags::answertxt{$id}=[$answer];
510: }
511:
512: } elsif ($target eq 'edit') {
513: $result.=&Apache::edit::tag_start($target,$token);
514: $result.=&Apache::edit::text_arg('String to display for answer:',
515: 'answerdisplay',$token);
516: $result.=&Apache::edit::select_arg('Algebra System:',
517: 'cas',
518: ['maxima','R'],
519: $token);
520: $result.=&Apache::edit::text_arg('Argument Array:',
521: 'args',$token).
522: &Apache::loncommon::help_open_topic('Maxima_Argument_Array');
523: $result.=&Apache::edit::text_arg('Libraries:',
524: 'libraries',$token).
525: &Apache::loncommon::help_open_topic('Maxima_Libraries');
526: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
527: } elsif ($target eq 'modified') {
528: my $constructtag;
529: $constructtag=&Apache::edit::get_new_args($token,$parstack,
530: $safeeval,'answerdisplay','cas','args','libraries');
531: if ($constructtag) {
532: $result = &Apache::edit::rebuild_tag($token);
533: }
534: } elsif ($target eq 'answer' || $target eq 'grade') {
535: &Apache::response::reset_params();
536: } elsif ($target eq 'meta') {
537: $result .= &Apache::response::meta_package_write('mathresponse');
538: }
539: return $result;
540: }
541:
542: sub edit_mathresponse_button {
543: my ($id,$field)=@_;
544: my $button=&mt('Edit Answer');
545: # my $helplink=&Apache::loncommon::help_open_topic('Formula_Editor');
546: my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
547: return(<<ENDFORMULABUTTON);
548: <script type="text/javascript" language="JavaScript">
549: function edit_${id}_${field} (textarea) {
550: thenumber = textarea;
551: thedata = document.forms['lonhomework'].elements[textarea].value;
552: newwin = window.open("/adm/dragmath/applet/MaximaPopup.html","","width=565,height=400,resizable");
553: }
554: </script>
555: <a href="javascript:edit_${id}_${field}('${field}');void(0);"><img class="stift" src="$iconpath/stift.gif" alt="$button" title="$button" /></a>
556: ENDFORMULABUTTON
557: }
558:
559: sub end_mathresponse {
560: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
561: my $result;
562: my $part=$Apache::inputtags::part;
563: my $id=$Apache::inputtags::response[-1];
564: if ( $target eq 'grade' && &Apache::response::submitted() ) {
565: my $response = &Apache::response::getresponse();
566: if ( $response =~ /[^\s]/ ) {
567: if (!$Apache::lonxml::default_homework_loaded) {
568: &Apache::lonxml::default_homework_load($safeeval);
569: }
570: my %previous = &Apache::response::check_for_previous($response,
571: $part,$id);
572: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
573: $response;
574: my $error;
575: my $award;
576: my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
577: if ($cas eq 'maxima') {
578: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
579: $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args,
580: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
581: }
582: if ($cas eq 'R') {
583: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
584: $award=&Apache::lonr::r_run($Apache::response::custom_answer[-1],$response,$args,
585: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
586: }
587:
588: if (!&Apache::inputtags::valid_award($award)) {
589: $error = $award;
590: $award = 'ERROR';
591: }
592: &Apache::response::handle_previous(\%previous,$award);
593: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
594: $award;
595: if ($error) {
596: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
597: $error;
598: }
599: }
600: }
601: if ($target eq 'web') {
602: &setup_prior_tries_hash(\&format_prior_response_math);
603: my $partid = $Apache::inputtags::part;
604: my $id = $Apache::inputtags::response[-1];
605: if (($Apache::inputtags::status['-1'] eq 'CAN_ANSWER')
606: && (&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffeditor') ne 'yes')) {
607: $result.=&edit_mathresponse_button($id,"HWVAL_$id");
608: }
609: }
610:
611: pop(@Apache::lonxml::namespace);
612: pop(@Apache::response::custom_answer);
613: pop(@Apache::response::custom_answer_type);
614: &Apache::lonxml::deregister('Apache::response',('answer'));
615: &Apache::response::end_response();
616: return $result;
617: }
618:
619: sub format_prior_response_math {
620: my ($mode,$answer) =@_;
621: return '<span class="LC_prior_math">'.
622: &HTML::Entities::encode($answer,'"<>&').'</span>';
623: }
624:
625: sub implicit_multiplication {
626: my ($expression)=@_;
627: # Escape scientific notation, so 3e8 does not become 3*e*8
628: # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
629: $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
630: # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
631: $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
632: # Fill in multiplication signs
633: # a b -> a*b;3 b -> 3*b;3 4 -> 3*4
634: $expression=~s/([A-Za-z0-9])\s+(?=[A-Za-z0-9])/$1\*/gs;
635: # )( -> )*(; ) ( -> )*(
636: $expression=~s/\)\s*\(/\)\*\(/gs;
637: # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
638: $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
639: # a ( -> a*(
640: $expression=~s/([A-Za-z0-9])\s+\(/$1\*\(/gs;
641: # )a -> )*a; )3 -> )*3; ) 3 -> )*3
642: $expression=~s/\)\s*([A-Za-z0-9])/\)\*$1/gs;
643: # 3&8 -> 3e8; 3&-4 -> 3e-4
644: $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
645: return $expression;
646: }
647:
648: sub start_answer {
649: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
650: my $result;
651: push(@Apache::response::custom_answer,
652: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser));
653: push(@Apache::response::custom_answer_type,
654: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)));
655: $Apache::response::custom_answer_type[-1] =~ s/\s+//g;
656: if ($target eq "edit" ) {
657: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
658: $result.=&Apache::edit::editfield($token->[1],
659: $Apache::response::custom_answer[-1],
660: '',80,4);
661: } elsif ( $target eq "modified" ) {
662: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
663: }
664: return $result;
665: }
666:
667: sub end_answer {
668: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
669: if ($target eq 'edit' ) {
670: return &Apache::edit::end_table();
671: }
672: }
673:
674: sub decide_package {
675: my ($tagstack)=@_;
676: my $package;
677: if ($$tagstack[-1] eq 'parameter') {
678: $package='part';
679: } else {
680: my $i=-1;
681: while (defined($$tagstack[$i])) {
682: if ($$tagstack[$i] =~ /(response|hint)$/) {
683: $package=$$tagstack[$i];
684: last;
685: }
686: $i--;
687: }
688: }
689: return $package;
690: }
691:
692: sub start_responseparam {
693: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
694: my $result='';
695: if ($target eq 'meta') {
696: $result = &meta_parameter_write($token->[2]->{'name'},
697: $token->[2]->{'type'},
698: $token->[2]->{'default'},
699: $token->[2]->{'description'});
700: } elsif ($target eq 'edit') {
701: $result.=&Apache::edit::tag_start($target,$token);
702: my $optionlist;
703: my $package=&decide_package($tagstack);
704: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
705: if ($key =~ /^\Q$package\E&(.*)&display$/) {
706: $optionlist.='<option value="'.$1.'">'.
707: $Apache::lonnet::packagetab{$key}.'</option>';
708: }
709: }
710: if (defined($optionlist)) {
711: $result.=&mt('Use template:').' <select name="'.
712: &Apache::edit::html_element_name('parameter_package').'">'.
713: '<option value=""></option>'.$optionlist.'</select><br />';
714: }
715: $result.=&Apache::edit::text_arg('Name:','name',$token).
716: &Apache::edit::text_arg('Type:','type',$token).
717: &Apache::edit::text_arg('Description:','description',$token).
718: &Apache::edit::text_arg('Default:','default',$token).
719: "</td></tr>";
720: $result.=&Apache::edit::end_table;
721: } elsif ($target eq 'modified') {
722: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
723: $safeeval,'name','type',
724: 'description','default');
725: my $element=&Apache::edit::html_element_name('parameter_package');
726: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
727: my $name=$env{"form.$element"};
728: my $tag=&decide_package($tagstack);
729: $token->[2]->{'name'}=$name;
730: $token->[2]->{'type'}=
731: $Apache::lonnet::packagetab{"$tag&$name&type"};
732: $token->[2]->{'description'}=
733: $Apache::lonnet::packagetab{"$tag&$name&display"};
734: $token->[2]->{'default'}=
735: $Apache::lonnet::packagetab{"$tag&$name&default"};
736: $token->[3] = ['name','type','description','default'];
737: $constructtag=1;
738: }
739: if ($constructtag) {
740: $result = &Apache::edit::rebuild_tag($token);
741: }
742: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
743: $target eq 'tex' || $target eq 'analyze' ) {
744: if ($env{'request.state'} eq 'construct') {
745: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
746: my $default=&Apache::lonxml::get_param('default',$parstack,
747: $safeeval);
748: if ($name) {$Apache::inputtags::params{$name}=$default;}
749: }
750: }
751: return $result;
752: }
753:
754: sub end_responseparam {
755: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
756: if ($target eq 'edit') { return ('','no'); }
757: return '';
758: }
759:
760: sub start_parameter {
761: return &start_responseparam(@_);
762: }
763:
764: sub end_parameter {
765: return &end_responseparam(@_);
766: }
767:
768: sub reset_params {
769: %Apache::inputtags::params=();
770: }
771:
772: sub setup_params {
773: my ($tag,$safeeval) = @_;
774:
775: if ($env{'request.state'} eq 'construct') { return; }
776: my %paramlist=();
777: foreach my $key (keys(%Apache::lonnet::packagetab)) {
778: if ($key =~ /^\Q$tag\E/) {
779: my ($package,$name) = split(/&/,$key);
780: $paramlist{$name}=1;
781: }
782: }
783: foreach my $key (keys(%paramlist)) {
784: my $entry= 'resource.'.$Apache::inputtags::part;
785: if (defined($Apache::inputtags::response[-1])) {
786: $entry.='_'.$Apache::inputtags::response[-1];
787: }
788: $entry.='.'.$key;
789: &Apache::lonxml::debug("looking for $entry");
790: my $value = &Apache::lonnet::EXT("$entry");
791: &Apache::lonxml::debug("$key has value :$value:");
792: if ($value eq 'con_lost' || $value =~ /^error:/) {
793: &Apache::lonxml::debug("using nothing");
794: $Apache::inputtags::params{$key}='';
795: } else {
796: my $string="{return qq\0".$value."\0}";
797: my $newvalue=&Apache::run::run($string,$safeeval,1);
798: if (defined($newvalue)) { $value=$newvalue; }
799: $Apache::inputtags::params{$key}=$value;
800: }
801: }
802: }
803:
804: {
805: my @answer_bits;
806: my $need_row_start;
807:
808: sub answer_header {
809: my ($type,$increment,$rows) = @_;
810: my $result;
811: if ($env{'form.answer_output_mode'} eq 'tex') {
812: undef(@answer_bits);
813: my $bit;
814: if ($Apache::lonhomework::type eq 'exam') {
815: $bit = ($Apache::lonxml::counter+$increment).') ';
816: } else {
817: $bit .= ' Answer for Part: \verb|'.
818: $Apache::inputtags::part.'| ';
819: }
820: push(@answer_bits,$bit);
821: } else {
822: my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
823: $result = '<table border="1"><tr>';
824: if ($Apache::lonhomework::type eq 'exam') {
825: $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
826: } else {
827: $result .= $td.&mt('Answer for Part: [_1]',
828: $Apache::inputtags::part).'</td>';
829: }
830: $result .= "\n";
831: $need_row_start = 0;
832: }
833: return $result;
834: }
835:
836: sub next_answer {
837: my ($type) = @_;
838: my $result;
839: if ($env{'form.answer_output_mode'} eq 'tex') {
840: # FIXME ... need to do something with tex mode
841: } else {
842: $result .= "</tr>";
843: $need_row_start = 1;
844: }
845: return $result;
846: }
847:
848: sub answer_part {
849: my ($type,$answer,$args) = @_;
850: my $result;
851: if ($env{'form.answer_output_mode'} eq 'tex') {
852: if (!$args->{'no_verbatim'}) {
853: my $to_use='|';
854: foreach my $value (32..126) {
855: my $char=pack('c',$value);
856: if ($answer !~ /\Q$char\E/) {
857: $to_use=$char;
858: last;
859: }
860: }
861: my $fullanswer=$answer;
862: $answer='';
863: foreach my $element (split(/[\;]/,$fullanswer)) {
864: if ($element ne '') {
865: $answer.= '\verb'.$to_use.$element.$to_use.' \newline';
866: }
867: }
868: }
869: if ($answer ne '') {
870: push(@answer_bits,$answer);
871: }
872: } else {
873: if ($need_row_start) {
874: $result .= '<tr>';
875: $need_row_start = 0;
876: }
877: $result .= '<td>'.$answer.'</td>';
878: }
879: return $result;
880: }
881:
882: sub answer_footer {
883: my ($type) = @_;
884: my $result;
885: if ($env{'form.answer_output_mode'} eq 'tex') {
886: $result = ' \vskip 0 mm \noindent \begin{tabular}{|p{1.5cm}|p{6.8cm}|}\hline ';
887: $result .= $answer_bits[0].'&\vspace*{-4mm}\begin{itemize}';
888: for (my $i=1;$i<=$#answer_bits;$i++) {
889: $result.='\item '.$answer_bits[$i].'\vspace*{-7mm}';
890: }
891: $result .= ' \end{itemize} \\\\ \hline \end{tabular} \vskip 0 mm ';
892: } else {
893: if (!$need_row_start) {
894: $result .= '</tr>';
895: }
896: $result .= '</table>';
897: }
898: return $result;
899: }
900:
901: }
902:
903: sub showallfoils {
904: if (defined($env{'form.showallfoils'})) {
905: my ($symb)=&Apache::lonnet::whichuser();
906: if (($env{'request.state'} eq 'construct') ||
907: ($env{'user.adv'} && $symb eq '') ||
908: ($Apache::lonhomework::viewgrades) ) {
909: return 1;
910: }
911: }
912: if ($Apache::lonhomework::type eq 'survey') { return 1; }
913: if ($Apache::lonhomework::type eq 'surveycred') { return 1; }
914: if ($Apache::lonhomework::type eq 'anonsurvey') { return 1; }
915: if ($Apache::lonhomework::type eq 'anonsurveycred') { return 1; }
916:
917: return 0;
918: }
919:
920: =pod
921:
922: =item &getresponse();
923:
924: Retreives the current submitted response, helps out in the case of
925: scantron mode.
926:
927: Returns either the exact text of the submission, or a bubbled response
928: converted to something usable.
929:
930: Optional Arguments:
931: $offset - (defaults to 1) if a problem has more than one bubble
932: response, pass in the number of the bubble wanted, (the
933: first bubble associated with a problem has an offset of 1,
934: the second bubble is 2
935:
936: $resulttype - undef -> a number between 0 and 25
937: 'A is 1' -> a number between 1 and 26
938: 'letter' -> a letter between 'A' and 'Z'
939: $lines - undef problem only needs a single line of bubbles.
940: nonzero Problem wants the first nonempty response in
941: $lines lines of bubbles.
942: $bubbles_per_line - Must be provided if lines is defined.. number of
943: bubbles on a line.
944:
945: =cut
946:
947: sub getresponse {
948: my ($offset,$resulttype, $lines, $bubbles_per_line)=@_;
949: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
950: my $response;
951: if (!defined($offset)) {
952: $offset=1;
953: } else {
954: $formparm.=":$offset";
955: }
956: if (!defined($lines)) {
957: $lines = 1;
958: }
959: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
960: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
961: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
962: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
963: if ($env{'form.submitted'} eq 'scantron') {
964: my $part = $Apache::inputtags::part;
965: my $id = $Apache::inputtags::response[-1];
966:
967: my $line;
968: my $startline = $env{'form.scantron_questnum_start.'.$part.'.'.$id};
969: if (!$startline) {
970: $startline = $Apache::lonxml::counter;
971: }
972: for ($line = 0; $line < $lines; $line++) {
973: my $theline = $startline+$offset-1+$line;
974: $response = $env{"scantron.$theline.answer"};
975: if ((defined($response)) && ($response ne "") && ($response ne " ")) {
976: last;
977: }
978:
979: }
980:
981: # save bubbled letter for later
982: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
983: $response;
984: if ($resulttype ne 'letter') {
985: if ($resulttype eq 'A is 1') {
986: $response = $let_to_num{$response}+1;
987: } else {
988: $response = $let_to_num{$response};
989: }
990: if ($response ne "") {
991: $response += $line * $bubbles_per_line;
992: }
993: } else {
994: if ($response ne "") {
995: $response = chr(ord($response) + $line * $bubbles_per_line);
996: }
997: }
998:
999: } else {
1000: $response = $env{$formparm};
1001: }
1002: #
1003: # If we have a nonempty answer, correct the numeric value
1004: # of the answer for the line on which it was found.
1005: #
1006:
1007: return $response;
1008: }
1009:
1010: =pod
1011:
1012: =item &repetition();
1013:
1014: Returns the number of lines that are required to encode the weight.
1015: (Currently expects that there are 10 bubbles per line)
1016:
1017: =cut
1018:
1019: sub repetition {
1020: my $id = $Apache::inputtags::part;
1021: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1022: if (!defined($weight) || ($weight eq '')) { $weight=1; }
1023: my $repetition = int($weight/10);
1024: if ($weight % 10 != 0) { $repetition++; }
1025: return $repetition;
1026: }
1027:
1028: =pod
1029:
1030: =item &scored_response();
1031:
1032: Sets the results hash elements
1033:
1034: resource.$part_id.$response_id.awarded - to the floating point
1035: number between 0 and 1 that was awarded on the bubbled input
1036:
1037: resource.$part_id.$response_id.awarddetail - to 'ASSIGNED_SCORE'
1038:
1039: Returns
1040:
1041: the number of bubble sheet lines that were used (and likely need to
1042: be passed to &Apache::lonxml::increment_counter()
1043:
1044: Arguments
1045:
1046: $part_id - id of the part to grade
1047: $response_id - id of the response to grade
1048:
1049:
1050: =cut
1051:
1052: sub scored_response {
1053: my ($part,$id)=@_;
1054: my $repetition=&repetition();
1055: my $score=0;
1056: for (my $i=0;$i<$repetition;$i++) {
1057: # A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
1058: my $increase=&Apache::response::getresponse($i+1);
1059: if ($increase ne '') { $score+=$increase+1; }
1060: }
1061: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1062: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1063: my $pcr=$score/$weight;
1064: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
1065: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
1066: 'ASSIGNED_SCORE';
1067: return $repetition;
1068: }
1069:
1070: sub whichorder {
1071: my ($max,$randomize,$showall,$hash)=@_;
1072: #&Apache::lonxml::debug("man $max randomize $randomize");
1073: if (!defined(@{ $$hash{'names'} })) { return; }
1074: my @names = @{ $$hash{'names'} };
1075: my @whichopt =();
1076: my (%top,@toplist,%bottom,@bottomlist);
1077: if (!($showall || ($randomize eq 'no'))) {
1078: my $current=0;
1079: foreach my $name (@names) {
1080: $current++;
1081: if ($$hash{"$name.location"} eq 'top') {
1082: $top{$name}=$current;
1083: } elsif ($$hash{"$name.location"} eq 'bottom') {
1084: $bottom{$name}=$current;
1085: }
1086: }
1087: }
1088: my $topcount=0;
1089: my $bottomcount=0;
1090: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
1091: && ($#names > -1)) {
1092: #&Apache::lonxml::debug("Have $#whichopt max is $max");
1093: my $aopt;
1094: if ($showall || ($randomize eq 'no')) {
1095: $aopt=0;
1096: } else {
1097: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1098: }
1099: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
1100: $aopt=splice(@names,$aopt,1);
1101: #&Apache::lonxml::debug("Picked $aopt");
1102: if ($top{$aopt}) {
1103: $toplist[$top{$aopt}]=$aopt;
1104: $topcount++;
1105: } elsif ($bottom{$aopt}) {
1106: $bottomlist[$bottom{$aopt}]=$aopt;
1107: $bottomcount++;
1108: } else {
1109: push (@whichopt,$aopt);
1110: }
1111: }
1112: for (my $i=0;$i<=$#toplist;$i++) {
1113: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
1114: }
1115: for (my $i=0;$i<=$#bottomlist;$i++) {
1116: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
1117: }
1118: return @whichopt;
1119: }
1120:
1121: sub show_answer {
1122: my $part = $Apache::inputtags::part;
1123: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
1124: my $status = $Apache::inputtags::status[-1];
1125: return ( ($award =~ /^correct/
1126: && &Apache::lonhomework::show_problem_status())
1127: || $status eq "SHOW_ANSWER");
1128: }
1129:
1130: sub analyze_store_foilgroup {
1131: my ($shown,$attrs)=@_;
1132: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1133: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
1134: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
1135: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
1136: foreach my $attr (@$attrs) {
1137: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
1138: $Apache::response::foilgroup{"$name.".$attr};
1139: }
1140: }
1141: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1142: }
1143:
1144: sub check_if_computed {
1145: my ($token,$parstack,$safeeval,$name)=@_;
1146: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1147: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1148: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1149: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
1150: }
1151: }
1152:
1153: sub pick_foil_for_concept {
1154: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
1155: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
1156: my @names = @{ $Apache::response::conceptgroup{'names'} };
1157: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
1158: my $name=$names[$pick];
1159: push @{ $Apache::response::foilgroup{'names'} }, $name;
1160: foreach my $attr (@$attrs) {
1161: $Apache::response::foilgroup{"$name.".$attr} =
1162: $Apache::response::conceptgroup{"$name.".$attr};
1163: }
1164: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
1165: $Apache::response::foilgroup{"$name.concept"} = $concept;
1166: &Apache::lonxml::debug("Selecting $name in $concept");
1167: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1168: if ($target eq 'analyze') {
1169: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
1170: $concept);
1171: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
1172: $Apache::response::conceptgroup{'names'};
1173: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
1174: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
1175: $name);
1176: foreach my $attr (@$attrs) {
1177: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
1178: $Apache::response::conceptgroup{"$name.$attr"};
1179: }
1180: }
1181: }
1182: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
1183: $hinthash->{"$part_id.concept.$concept"}=
1184: $Apache::response::conceptgroup{'names'};
1185:
1186: }
1187:
1188: =pod
1189:
1190: =item get_response_param()
1191:
1192: Get a parameter associated with a problem.
1193: Parameters:
1194: $id - the id of the paramater, either a part id,
1195: or a partid and responspe id joined by _
1196: $name - Name of the parameter to fetch
1197: $default - Default value for the paramter.
1198:
1199: =cut
1200:
1201: sub get_response_param {
1202: my ($id,$name,$default)=@_;
1203: my $parameter;
1204: if ($env{'request.state'} eq 'construct' &&
1205: defined($Apache::inputtags::params{$name})) {
1206: $parameter=$Apache::inputtags::params{$name};
1207: } else {
1208: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
1209: }
1210: if (!defined($parameter) || $parameter eq '') {
1211: $parameter = $default;
1212: }
1213: return $parameter;
1214: }
1215:
1216: sub submitted {
1217: my ($who)=@_;
1218:
1219: # when scatron grading any submission is a submission
1220: if ($env{'form.submitted'} eq 'scantron') { return 1; }
1221: # if the caller only cared if this was a scantron submission
1222: if ($who eq 'scantron') { return 0; }
1223: # if the Submit Answer button for this particular part was pressed
1224: my $partid=$Apache::inputtags::part;
1225: if ($env{'form.submitted'} eq "part_$partid") {
1226: return 1;
1227: }
1228: if ($env{'form.submitted'} eq "yes"
1229: && defined($env{'form.submit_'.$partid})) {
1230: return 1;
1231: }
1232: # Submit All button on a .page was pressed
1233: if (defined($env{'form.all_submit'})) { return 1; }
1234: # otherwise no submission occurred
1235: return 0;
1236: }
1237:
1238: sub add_to_gradingqueue {
1239: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1240: if ( $courseid eq ''
1241: || $symb eq ''
1242: || $env{'request.state'} eq 'construct'
1243: || $Apache::lonhomework::type ne 'problem') {
1244: return;
1245: }
1246:
1247: my %queue_info = ( 'type' => 'problem',
1248: 'time' => time);
1249:
1250: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
1251: $queue_info{'slot'}=
1252: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
1253: }
1254:
1255: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
1256: if ($result ne 'ok') {
1257: &Apache::lonxml::error("add_to_queue said $result");
1258: }
1259: }
1260:
1261: =pod
1262:
1263: =item check_status()
1264:
1265: basically undef and 0 (both false) mean that they still have work to do
1266: and all true values mean that they can't do any more work
1267:
1268: a return of undef means it is unattempted
1269: a return of 0 means it is attmpted and wrong but still has tries
1270: a return of 1 means it is marked correct
1271: a return of 2 means they have exceed maximum number of tries
1272: a return of 3 means it after the answer date
1273:
1274: =cut
1275:
1276: sub check_status {
1277: my ($id)=@_;
1278: if (!defined($id)) { $id=$Apache::inputtags::part; }
1279: my $curtime=&Apache::lonnet::EXT('system.time');
1280: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
1281: my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
1282: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
1283: if ( $opendate && $curtime > $opendate &&
1284: $duedate && $curtime > $duedate &&
1285: $answerdate && $curtime > $answerdate) {
1286: return 3;
1287: }
1288: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1289: if ($status =~ /^correct/) { return 1; }
1290: if (!$status) { return undef; }
1291: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
1292: if ($maxtries eq '') { $maxtries=2; }
1293: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
1294: if ($curtries < $maxtries) { return 0; }
1295: return 2;
1296: }
1297:
1298: =pod
1299:
1300: =item setup_prior_tries_hash()
1301:
1302: Foreach each past .submission $func is called with 3 arguments
1303: - the mode to set things up for (currently always 'grade')
1304: - the stored .submission string
1305: - The expansion of $data
1306:
1307: $data is an array ref containing elements that are either
1308: - scalars that are other elements of the history hash to pass to $func
1309: - ref to data to be passed untouched to $func
1310:
1311: =cut
1312:
1313: sub setup_prior_tries_hash {
1314: my ($func,$data) = @_;
1315: my $part = $Apache::inputtags::part;
1316: my $id = $Apache::inputtags::response[-1];
1317: foreach my $i (1..$Apache::lonhomework::history{'version'}) {
1318: my $sub_key = "$i:resource.$part.$id.submission";
1319: next if (!exists($Apache::lonhomework::history{$sub_key}));
1320: my @other_data;
1321: foreach my $datum (@{ $data }) {
1322: if (ref($datum)) {
1323: push(@other_data,$datum);
1324: } else {
1325: my $info_key = "$i:resource.$part.$id.$datum";
1326: push(@other_data,$Apache::lonhomework::history{$info_key});
1327: }
1328: }
1329:
1330: my $output =
1331: &$func('grade',
1332: $Apache::lonhomework::history{$sub_key},
1333: \@other_data);
1334: if (defined($output)) {
1335: $Apache::inputtags::submission_display{$sub_key} = $output;
1336: }
1337: }
1338: }
1339:
1340: 1;
1341: __END__
1342:
1343: =pod
1344:
1345: =cut
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