1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.220 2010/11/24 00:10:06 www 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::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,$last,$type) = @_;
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'}:$previous{'used'}:");
308: } elsif ($type eq 'ci') {
309: if (lc($pastresponse) eq lc($curresponse)) {
310: if ($key =~ /^(\d+):/) {
311: push (@{$previous{'versionci'}},$1);
312: $previous{'awardci'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
313: $previous{'usedci'} = 1;
314: }
315: }
316: }
317: }
318: }
319: &Apache::lonhomework::showhash(%previous);
320: return %previous;
321: }
322:
323: sub handle_previous {
324: my ($previous,$ad)=@_;
325: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
326: if ($$previous{'last'}) {
327: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
328: push(@Apache::inputtags::previous_version,$$previous{'version'});
329: } elsif (($Apache::lonhomework::type ne 'survey') &&
330: ($Apache::lonhomework::type ne 'surveycred') &&
331: ($Apache::lonhomework::type ne 'anonsurvey') &&
332: ($Apache::lonhomework::type ne 'anonsurveycred')) {
333: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
334: push(@Apache::inputtags::previous_version,$$previous{'version'});
335: }
336: }
337: }
338:
339: sub view_or_modify {
340: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
341: my $myself=0;
342: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
343: $myself=1;
344: }
345: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
346: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
347: if ($mgr) { return "M"; }
348: if ($vgr) { return "V"; }
349: if ($myself) { return "V"; }
350: return '';
351: }
352:
353: sub start_dataresponse {
354: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
355: my $id = &Apache::response::start_response($parstack,$safeeval);
356: my $result;
357: if ($target eq 'web') {
358: $result = $token->[2]->{'display'}.':';
359: } elsif ($target eq 'meta') {
360: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
361: $token->[2]->{'type'},
362: $token->[2]->{'display'});
363: $result .= &Apache::response::meta_package_write('dataresponse');
364: }
365: return $result;
366: }
367:
368: sub end_dataresponse {
369: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
370: my $result;
371: if ( $target eq 'web' ) {
372: } elsif ($target eq 'grade' ) {
373: if ( defined $env{'form.submitted'}) {
374: my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
375: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
376: if ($allowed) {
377: &Apache::response::setup_params('dataresponse',$safeeval);
378: my $partid = $Apache::inputtags::part;
379: my $id = $Apache::inputtags::response['-1'];
380: my $response = $env{'form.HWVAL_'.$id};
381: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
382: if ( $response =~ /[^\s]/) {
383: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
384: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
385: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
386: }
387: } else {
388: $result='Not Permitted to change values.'
389: }
390: }
391: }
392: &Apache::response::end_response;
393: return $result;
394: }
395:
396: sub start_customresponse {
397: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
398: my $id = &Apache::response::start_response($parstack,$safeeval);
399: push(@Apache::lonxml::namespace,'customresponse');
400: my $result;
401: @Apache::response::custom_answer=();
402: @Apache::response::custom_answer_type=();
403: &Apache::lonxml::register('Apache::response',('answer'));
404: if ($target eq 'web') {
405: if ( &Apache::response::show_answer() ) {
406: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
407: $safeeval);
408: $Apache::inputtags::answertxt{$id}=[$answer];
409: }
410: } elsif ($target eq 'edit') {
411: $result.=&Apache::edit::tag_start($target,$token);
412: $result.=&Apache::edit::text_arg('String to display for answer:',
413: 'answerdisplay',$token,'50');
414: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
415: } elsif ($target eq 'modified') {
416: my $constructtag;
417: $constructtag=&Apache::edit::get_new_args($token,$parstack,
418: $safeeval,'answerdisplay');
419: if ($constructtag) {
420: $result = &Apache::edit::rebuild_tag($token);
421: }
422: } elsif ($target eq 'answer' || $target eq 'grade') {
423: &Apache::response::reset_params();
424: } elsif ($target eq 'meta') {
425: $result .= &Apache::response::meta_package_write('customresponse');
426: }
427: return $result;
428: }
429:
430: sub end_customresponse {
431: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
432: my $result;
433: my $part=$Apache::inputtags::part;
434: my $id=$Apache::inputtags::response[-1];
435: if ( $target eq 'grade' && &Apache::response::submitted() ) {
436: my $response = &Apache::response::getresponse();
437: if ($Apache::lonhomework::type eq 'exam' ||
438: &Apache::response::submitted('scantron')) {
439: &Apache::response::scored_response($part,$id);
440: } elsif ( $response =~ /[^\s]/ &&
441: $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
442: if (!$Apache::lonxml::default_homework_loaded) {
443: &Apache::lonxml::default_homework_load($safeeval);
444: }
445: my %previous = &Apache::response::check_for_previous($response,
446: $part,$id);
447: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
448: $response;
449: my $error;
450: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
451: $response;
452:
453: my ($award,$score) = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
454: if (!&Apache::inputtags::valid_award($award)) {
455: $error = $award;
456: $award = 'ERROR';
457: }
458: &Apache::response::handle_previous(\%previous,$award);
459: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
460: $award;
461: if ($award eq 'ASSIGNED_SCORE') {
462: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=1.0*$score;
463: }
464: if ($error) {
465: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
466: $error;
467: }
468: }
469: } elsif ( $target eq 'answer') {
470: $result = &Apache::response::answer_header('customresponse');
471: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
472: $safeeval);
473: if ($env{'form.answer_output_mode'} ne 'tex') {
474: $answer = '<b>'.$answer.'</b>';
475: }
476: $result .= &Apache::response::answer_part('customresponse',$answer);
477: $result .= &Apache::response::answer_footer('customresponse');
478: }
479: if ($target eq 'web') {
480: &setup_prior_tries_hash(\&format_prior_response_math);
481: }
482: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
483: $target eq 'tex' || $target eq 'analyze') {
484: &Apache::lonxml::increment_counter(&Apache::response::repetition(),
485: "$part.$id");
486: if ($target eq 'analyze') {
487: $Apache::lonhomework::analyze{"$part.$id.type"} = 'customresponse';
488: &Apache::lonhomework::set_bubble_lines();
489: }
490: }
491: pop(@Apache::lonxml::namespace);
492: pop(@Apache::response::custom_answer);
493: pop(@Apache::response::custom_answer_type);
494: &Apache::lonxml::deregister('Apache::response',('answer'));
495: &Apache::response::end_response();
496: return $result;
497: }
498:
499: sub format_prior_response_custom {
500: my ($mode,$answer) =@_;
501: return '<span class="LC_prior_custom">'.
502: &HTML::Entities::encode($answer,'"<>&').'</span>';
503: }
504:
505: sub start_mathresponse {
506: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
507: my $id = &Apache::response::start_response($parstack,$safeeval);
508: push(@Apache::lonxml::namespace,'mathresponse');
509: my $result;
510: @Apache::response::custom_answer=();
511: @Apache::response::custom_answer_type=();
512: &Apache::lonxml::register('Apache::response',('answer'));
513: if ($target eq 'web') {
514: if ( &Apache::response::show_answer() ) {
515: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
516: $safeeval);
517: $Apache::inputtags::answertxt{$id}=[$answer];
518: }
519:
520: } elsif ($target eq 'edit') {
521: $result.=&Apache::edit::tag_start($target,$token);
522: $result.=&Apache::edit::text_arg('String to display for answer:',
523: 'answerdisplay',$token,'50');
524: $result.=&Apache::edit::select_arg('Algebra System:',
525: 'cas',
526: ['maxima','R'],
527: $token);
528: $result.=&Apache::edit::text_arg('Argument Array:',
529: 'args',$token).
530: &Apache::loncommon::help_open_topic('Maxima_Argument_Array');
531: $result.=&Apache::edit::text_arg('Libraries:',
532: 'libraries',$token).
533: &Apache::loncommon::help_open_topic('Maxima_Libraries');
534: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
535: } elsif ($target eq 'modified') {
536: my $constructtag;
537: $constructtag=&Apache::edit::get_new_args($token,$parstack,
538: $safeeval,'answerdisplay','cas','args','libraries');
539: if ($constructtag) {
540: $result = &Apache::edit::rebuild_tag($token);
541: }
542: } elsif ($target eq 'answer' || $target eq 'grade') {
543: &Apache::response::reset_params();
544: } elsif ($target eq 'meta') {
545: $result .= &Apache::response::meta_package_write('mathresponse');
546: }
547: return $result;
548: }
549:
550: sub edit_mathresponse_button {
551: my ($id,$field)=@_;
552: my $button=&mt('Edit Answer');
553: # my $helplink=&Apache::loncommon::help_open_topic('Formula_Editor');
554: my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
555: return(<<ENDFORMULABUTTON);
556: <script type="text/javascript" language="JavaScript">
557: function edit_${id}_${field} (textarea) {
558: thenumber = textarea;
559: thedata = document.forms['lonhomework'].elements[textarea].value;
560: newwin = window.open("/adm/dragmath/applet/MaximaPopup.html","","width=565,height=400,resizable");
561: }
562: </script>
563: <a href="javascript:edit_${id}_${field}('${field}');void(0);"><img class="stift" src="$iconpath/stift.gif" alt="$button" title="$button" /></a>
564: ENDFORMULABUTTON
565: }
566:
567: sub end_mathresponse {
568: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
569: my $result;
570: my $part=$Apache::inputtags::part;
571: my $id=$Apache::inputtags::response[-1];
572: if ( $target eq 'grade' && &Apache::response::submitted() ) {
573: my $response = &Apache::response::getresponse();
574: if ( $response =~ /[^\s]/ ) {
575: if (!$Apache::lonxml::default_homework_loaded) {
576: &Apache::lonxml::default_homework_load($safeeval);
577: }
578: my %previous = &Apache::response::check_for_previous($response,
579: $part,$id);
580: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
581: $response;
582: my $error;
583: my $award;
584: my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
585: if ($cas eq 'maxima') {
586: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
587: $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args,
588: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
589: }
590: if ($cas eq 'R') {
591: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
592: $award=&Apache::lonr::r_run($Apache::response::custom_answer[-1],$response,$args,
593: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
594: }
595:
596: if (!&Apache::inputtags::valid_award($award)) {
597: $error = $award;
598: $award = 'ERROR';
599: }
600: &Apache::response::handle_previous(\%previous,$award);
601: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
602: $award;
603: if ($error) {
604: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
605: $error;
606: }
607: }
608: }
609: if ($target eq 'web') {
610: &setup_prior_tries_hash(\&format_prior_response_math);
611: my $partid = $Apache::inputtags::part;
612: my $id = $Apache::inputtags::response[-1];
613: if (($Apache::inputtags::status['-1'] eq 'CAN_ANSWER')
614: && (&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffeditor') ne 'yes')) {
615: $result.=&edit_mathresponse_button($id,"HWVAL_$id");
616: }
617: }
618:
619: pop(@Apache::lonxml::namespace);
620: pop(@Apache::response::custom_answer);
621: pop(@Apache::response::custom_answer_type);
622: &Apache::lonxml::deregister('Apache::response',('answer'));
623: &Apache::response::end_response();
624: return $result;
625: }
626:
627: sub format_prior_response_math {
628: my ($mode,$answer) =@_;
629: return '<span class="LC_prior_math">'.
630: &HTML::Entities::encode($answer,'"<>&').'</span>';
631: }
632:
633: sub implicit_multiplication {
634: my ($expression)=@_;
635: # Escape scientific notation, so 3e8 does not become 3*e*8
636: # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
637: $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
638: # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
639: $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
640: # Fill in multiplication signs
641: # a b -> a*b;3 b -> 3*b;3 4 -> 3*4
642: $expression=~s/([A-Za-z0-9])\s+(?=[A-Za-z0-9])/$1\*/gs;
643: # )( -> )*(; ) ( -> )*(
644: $expression=~s/\)\s*\(/\)\*\(/gs;
645: # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
646: $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
647: # a ( -> a*(
648: $expression=~s/([A-Za-z0-9])\s+\(/$1\*\(/gs;
649: # )a -> )*a; )3 -> )*3; ) 3 -> )*3
650: $expression=~s/\)\s*([A-Za-z0-9])/\)\*$1/gs;
651: # 3&8 -> 3e8; 3&-4 -> 3e-4
652: $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
653: return $expression;
654: }
655:
656: sub start_answer {
657: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
658: my $result;
659: push(@Apache::response::custom_answer,
660: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser));
661: push(@Apache::response::custom_answer_type,
662: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)));
663: $Apache::response::custom_answer_type[-1] =~ s/\s+//g;
664: if ($target eq "edit" ) {
665: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
666: $result.=&Apache::edit::editfield($token->[1],
667: $Apache::response::custom_answer[-1],
668: '',80,4);
669: } elsif ( $target eq "modified" ) {
670: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
671: }
672: return $result;
673: }
674:
675: sub end_answer {
676: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
677: if ($target eq 'edit' ) {
678: return &Apache::edit::end_table();
679: }
680: }
681:
682: sub decide_package {
683: my ($tagstack)=@_;
684: my $package;
685: if ($$tagstack[-1] eq 'parameter') {
686: $package='part';
687: } else {
688: my $i=-1;
689: while (defined($$tagstack[$i])) {
690: if ($$tagstack[$i] =~ /(response|hint)$/) {
691: $package=$$tagstack[$i];
692: last;
693: }
694: $i--;
695: }
696: }
697: return $package;
698: }
699:
700: sub start_responseparam {
701: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
702: my $result='';
703: if ($target eq 'meta') {
704: $result = &meta_parameter_write($token->[2]->{'name'},
705: $token->[2]->{'type'},
706: $token->[2]->{'default'},
707: $token->[2]->{'description'});
708: } elsif ($target eq 'edit') {
709: $result.=&Apache::edit::tag_start($target,$token);
710: my $optionlist;
711: my $package=&decide_package($tagstack);
712: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
713: if ($key =~ /^\Q$package\E&(.*)&display$/) {
714: $optionlist.='<option value="'.$1.'">'.
715: $Apache::lonnet::packagetab{$key}.'</option>';
716: }
717: }
718: if (defined($optionlist)) {
719: $result.=&mt('Use template:').' <select name="'.
720: &Apache::edit::html_element_name('parameter_package').'">'.
721: '<option value=""></option>'.$optionlist.'</select><br />';
722: }
723: $result.=&Apache::edit::text_arg('Name:','name',$token).
724: &Apache::edit::text_arg('Type:','type',$token).
725: &Apache::edit::text_arg('Description:','description',$token).
726: &Apache::edit::text_arg('Default:','default',$token).
727: "</td></tr>";
728: $result.=&Apache::edit::end_table;
729: } elsif ($target eq 'modified') {
730: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
731: $safeeval,'name','type',
732: 'description','default');
733: my $element=&Apache::edit::html_element_name('parameter_package');
734: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
735: my $name=$env{"form.$element"};
736: my $tag=&decide_package($tagstack);
737: $token->[2]->{'name'}=$name;
738: $token->[2]->{'type'}=
739: $Apache::lonnet::packagetab{"$tag&$name&type"};
740: $token->[2]->{'description'}=
741: $Apache::lonnet::packagetab{"$tag&$name&display"};
742: $token->[2]->{'default'}=
743: $Apache::lonnet::packagetab{"$tag&$name&default"};
744: $token->[3] = ['name','type','description','default'];
745: $constructtag=1;
746: }
747: if ($constructtag) {
748: $result = &Apache::edit::rebuild_tag($token);
749: }
750: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
751: $target eq 'tex' || $target eq 'analyze' ) {
752: if ($env{'request.state'} eq 'construct') {
753: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
754: my $default=&Apache::lonxml::get_param('default',$parstack,
755: $safeeval);
756: if ($name) {$Apache::inputtags::params{$name}=$default;}
757: }
758: }
759: return $result;
760: }
761:
762: sub end_responseparam {
763: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
764: if ($target eq 'edit') { return ('','no'); }
765: return '';
766: }
767:
768: sub start_parameter {
769: return &start_responseparam(@_);
770: }
771:
772: sub end_parameter {
773: return &end_responseparam(@_);
774: }
775:
776: sub reset_params {
777: %Apache::inputtags::params=();
778: }
779:
780: sub setup_params {
781: my ($tag,$safeeval) = @_;
782:
783: if ($env{'request.state'} eq 'construct') { return; }
784: my %paramlist=();
785: foreach my $key (keys(%Apache::lonnet::packagetab)) {
786: if ($key =~ /^\Q$tag\E/) {
787: my ($package,$name) = split(/&/,$key);
788: $paramlist{$name}=1;
789: }
790: }
791: foreach my $key (keys(%paramlist)) {
792: my $entry= 'resource.'.$Apache::inputtags::part;
793: if (defined($Apache::inputtags::response[-1])) {
794: $entry.='_'.$Apache::inputtags::response[-1];
795: }
796: $entry.='.'.$key;
797: &Apache::lonxml::debug("looking for $entry");
798: my $value = &Apache::lonnet::EXT("$entry");
799: &Apache::lonxml::debug("$key has value :$value:");
800: if ($value eq 'con_lost' || $value =~ /^error:/) {
801: &Apache::lonxml::debug("using nothing");
802: $Apache::inputtags::params{$key}='';
803: } else {
804: my $string="{return qq\0".$value."\0}";
805: my $newvalue=&Apache::run::run($string,$safeeval,1);
806: if (defined($newvalue)) { $value=$newvalue; }
807: $Apache::inputtags::params{$key}=$value;
808: }
809: }
810: }
811:
812: {
813: my @answer_bits;
814: my $need_row_start;
815:
816: sub answer_header {
817: my ($type,$increment,$rows) = @_;
818: my $result;
819: if ($env{'form.answer_output_mode'} eq 'tex') {
820: undef(@answer_bits);
821: my $bit;
822: if ($Apache::lonhomework::type eq 'exam') {
823: $bit = ($Apache::lonxml::counter+$increment).') ';
824: } else {
825: $bit .= ' Answer for Part: \verb|'.
826: $Apache::inputtags::part.'| ';
827: }
828: push(@answer_bits,$bit);
829: } else {
830: my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
831: $result = '<table border="1"><tr>';
832: if ($Apache::lonhomework::type eq 'exam') {
833: $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
834: } else {
835: $result .= $td.&mt('Answer for Part: [_1]',
836: $Apache::inputtags::part).'</td>';
837: }
838: $result .= "\n";
839: $need_row_start = 0;
840: }
841: return $result;
842: }
843:
844: sub next_answer {
845: my ($type) = @_;
846: my $result;
847: if ($env{'form.answer_output_mode'} eq 'tex') {
848: # FIXME ... need to do something with tex mode
849: } else {
850: $result .= "</tr>";
851: $need_row_start = 1;
852: }
853: return $result;
854: }
855:
856: sub answer_part {
857: my ($type,$answer,$args) = @_;
858: my $result;
859: if ($env{'form.answer_output_mode'} eq 'tex') {
860: if (!$args->{'no_verbatim'}) {
861: my $to_use='|';
862: foreach my $value (32..126) {
863: my $char=pack('c',$value);
864: if ($answer !~ /\Q$char\E/) {
865: $to_use=$char;
866: last;
867: }
868: }
869: my $fullanswer=$answer;
870: $answer='';
871: foreach my $element (split(/[\;]/,$fullanswer)) {
872: if ($element ne '') {
873: $answer.= '\verb'.$to_use.$element.$to_use.' \newline';
874: }
875: }
876: }
877: if ($answer ne '') {
878: push(@answer_bits,$answer);
879: }
880: } else {
881: if ($need_row_start) {
882: $result .= '<tr>';
883: $need_row_start = 0;
884: }
885: $result .= '<td>'.$answer.'</td>';
886: }
887: return $result;
888: }
889:
890: sub answer_footer {
891: my ($type) = @_;
892: my $result;
893: if ($env{'form.answer_output_mode'} eq 'tex') {
894: $result = ' \vskip 0 mm \noindent \begin{tabular}{|p{1.5cm}|p{6.8cm}|}\hline ';
895: $result .= $answer_bits[0].'&\vspace*{-4mm}\begin{itemize}';
896: for (my $i=1;$i<=$#answer_bits;$i++) {
897: $result.='\item '.$answer_bits[$i].'\vspace*{-7mm}';
898: }
899: $result .= ' \end{itemize} \\\\ \hline \end{tabular} \vskip 0 mm ';
900: } else {
901: if (!$need_row_start) {
902: $result .= '</tr>';
903: }
904: $result .= '</table>';
905: }
906: return $result;
907: }
908:
909: }
910:
911: sub showallfoils {
912: if (defined($env{'form.showallfoils'})) {
913: my ($symb)=&Apache::lonnet::whichuser();
914: if (($env{'request.state'} eq 'construct') ||
915: ($env{'user.adv'} && $symb eq '') ||
916: ($Apache::lonhomework::viewgrades) ) {
917: return 1;
918: }
919: }
920: if ($Apache::lonhomework::type eq 'survey') { return 1; }
921: if ($Apache::lonhomework::type eq 'surveycred') { return 1; }
922: if ($Apache::lonhomework::type eq 'anonsurvey') { return 1; }
923: if ($Apache::lonhomework::type eq 'anonsurveycred') { return 1; }
924:
925: return 0;
926: }
927:
928: =pod
929:
930: =item &getresponse();
931:
932: Retreives the current submitted response, helps out in the case of
933: scantron mode.
934:
935: Returns either the exact text of the submission, or a bubbled response
936: converted to something usable.
937:
938: Optional Arguments:
939: $offset - (defaults to 1) if a problem has more than one bubble
940: response, pass in the number of the bubble wanted, (the
941: first bubble associated with a problem has an offset of 1,
942: the second bubble is 2
943:
944: $resulttype - undef -> a number between 0 and 25
945: 'A is 1' -> a number between 1 and 26
946: 'letter' -> a letter between 'A' and 'Z'
947: $lines - undef problem only needs a single line of bubbles.
948: nonzero Problem wants the first nonempty response in
949: $lines lines of bubbles.
950: $bubbles_per_line - Must be provided if lines is defined.. number of
951: bubbles on a line.
952:
953: =cut
954:
955: sub getresponse {
956: my ($offset,$resulttype, $lines, $bubbles_per_line)=@_;
957: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
958: my $response;
959: if (!defined($offset)) {
960: $offset=1;
961: } else {
962: $formparm.=":$offset";
963: }
964: if (!defined($lines)) {
965: $lines = 1;
966: }
967: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
968: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
969: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
970: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
971: if ($env{'form.submitted'} eq 'scantron') {
972: my $part = $Apache::inputtags::part;
973: my $id = $Apache::inputtags::response[-1];
974:
975: my $line;
976: my $startline = $env{'form.scantron_questnum_start.'.$part.'.'.$id};
977: if (!$startline) {
978: $startline = $Apache::lonxml::counter;
979: }
980: for ($line = 0; $line < $lines; $line++) {
981: my $theline = $startline+$offset-1+$line;
982: $response = $env{"scantron.$theline.answer"};
983: if ((defined($response)) && ($response ne "") && ($response ne " ")) {
984: last;
985: }
986:
987: }
988:
989: # save bubbled letter for later
990: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
991: $response;
992: if ($resulttype ne 'letter') {
993: if ($resulttype eq 'A is 1') {
994: $response = $let_to_num{$response}+1;
995: } else {
996: $response = $let_to_num{$response};
997: }
998: if ($response ne "") {
999: $response += $line * $bubbles_per_line;
1000: }
1001: } else {
1002: if ($response ne "") {
1003: $response = chr(ord($response) + $line * $bubbles_per_line);
1004: }
1005: }
1006:
1007: } else {
1008: $response = $env{$formparm};
1009: }
1010: #
1011: # If we have a nonempty answer, correct the numeric value
1012: # of the answer for the line on which it was found.
1013: #
1014:
1015: return $response;
1016: }
1017:
1018: =pod
1019:
1020: =item &repetition();
1021:
1022: Returns the number of lines that are required to encode the weight.
1023: (Currently expects that there are 10 bubbles per line)
1024:
1025: =cut
1026:
1027: sub repetition {
1028: my $id = $Apache::inputtags::part;
1029: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1030: if (!defined($weight) || ($weight eq '')) { $weight=1; }
1031: my $repetition = int($weight/10);
1032: if ($weight % 10 != 0) { $repetition++; }
1033: return $repetition;
1034: }
1035:
1036: =pod
1037:
1038: =item &scored_response();
1039:
1040: Sets the results hash elements
1041:
1042: resource.$part_id.$response_id.awarded - to the floating point
1043: number between 0 and 1 that was awarded on the bubbled input
1044:
1045: resource.$part_id.$response_id.awarddetail - to 'ASSIGNED_SCORE'
1046:
1047: Returns
1048:
1049: the number of bubble sheet lines that were used (and likely need to
1050: be passed to &Apache::lonxml::increment_counter()
1051:
1052: Arguments
1053:
1054: $part_id - id of the part to grade
1055: $response_id - id of the response to grade
1056:
1057:
1058: =cut
1059:
1060: sub scored_response {
1061: my ($part,$id)=@_;
1062: my $repetition=&repetition();
1063: my $score=0;
1064: for (my $i=0;$i<$repetition;$i++) {
1065: # A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
1066: my $increase=&Apache::response::getresponse($i+1);
1067: if ($increase ne '') { $score+=$increase+1; }
1068: }
1069: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1070: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1071: my $pcr=$score/$weight;
1072: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
1073: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
1074: 'ASSIGNED_SCORE';
1075: return $repetition;
1076: }
1077:
1078: sub whichorder {
1079: my ($max,$randomize,$showall,$hash)=@_;
1080: #&Apache::lonxml::debug("man $max randomize $randomize");
1081: if (!defined(@{ $$hash{'names'} })) { return; }
1082: my @names = @{ $$hash{'names'} };
1083: my @whichopt =();
1084: my (%top,@toplist,%bottom,@bottomlist);
1085: if (!($showall || ($randomize eq 'no'))) {
1086: my $current=0;
1087: foreach my $name (@names) {
1088: $current++;
1089: if ($$hash{"$name.location"} eq 'top') {
1090: $top{$name}=$current;
1091: } elsif ($$hash{"$name.location"} eq 'bottom') {
1092: $bottom{$name}=$current;
1093: }
1094: }
1095: }
1096: my $topcount=0;
1097: my $bottomcount=0;
1098: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
1099: && ($#names > -1)) {
1100: #&Apache::lonxml::debug("Have $#whichopt max is $max");
1101: my $aopt;
1102: if ($showall || ($randomize eq 'no')) {
1103: $aopt=0;
1104: } else {
1105: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1106: }
1107: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
1108: $aopt=splice(@names,$aopt,1);
1109: #&Apache::lonxml::debug("Picked $aopt");
1110: if ($top{$aopt}) {
1111: $toplist[$top{$aopt}]=$aopt;
1112: $topcount++;
1113: } elsif ($bottom{$aopt}) {
1114: $bottomlist[$bottom{$aopt}]=$aopt;
1115: $bottomcount++;
1116: } else {
1117: push (@whichopt,$aopt);
1118: }
1119: }
1120: for (my $i=0;$i<=$#toplist;$i++) {
1121: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
1122: }
1123: for (my $i=0;$i<=$#bottomlist;$i++) {
1124: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
1125: }
1126: return @whichopt;
1127: }
1128:
1129: sub show_answer {
1130: my $part = $Apache::inputtags::part;
1131: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
1132: my $status = $Apache::inputtags::status[-1];
1133: return ( ($award =~ /^correct/
1134: && &Apache::lonhomework::show_problem_status())
1135: || $status eq "SHOW_ANSWER");
1136: }
1137:
1138: sub analyze_store_foilgroup {
1139: my ($shown,$attrs)=@_;
1140: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1141: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
1142: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
1143: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
1144: foreach my $attr (@$attrs) {
1145: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
1146: $Apache::response::foilgroup{"$name.".$attr};
1147: }
1148: }
1149: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1150: }
1151:
1152: sub check_if_computed {
1153: my ($token,$parstack,$safeeval,$name)=@_;
1154: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1155: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1156: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1157: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
1158: }
1159: }
1160:
1161: sub pick_foil_for_concept {
1162: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
1163: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
1164: my @names = @{ $Apache::response::conceptgroup{'names'} };
1165: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
1166: my $name=$names[$pick];
1167: push @{ $Apache::response::foilgroup{'names'} }, $name;
1168: foreach my $attr (@$attrs) {
1169: $Apache::response::foilgroup{"$name.".$attr} =
1170: $Apache::response::conceptgroup{"$name.".$attr};
1171: }
1172: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
1173: $Apache::response::foilgroup{"$name.concept"} = $concept;
1174: &Apache::lonxml::debug("Selecting $name in $concept");
1175: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1176: if ($target eq 'analyze') {
1177: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
1178: $concept);
1179: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
1180: $Apache::response::conceptgroup{'names'};
1181: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
1182: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
1183: $name);
1184: foreach my $attr (@$attrs) {
1185: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
1186: $Apache::response::conceptgroup{"$name.$attr"};
1187: }
1188: }
1189: }
1190: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
1191: $hinthash->{"$part_id.concept.$concept"}=
1192: $Apache::response::conceptgroup{'names'};
1193:
1194: }
1195:
1196: =pod
1197:
1198: =item get_response_param()
1199:
1200: Get a parameter associated with a problem.
1201: Parameters:
1202: $id - the id of the paramater, either a part id,
1203: or a partid and responspe id joined by _
1204: $name - Name of the parameter to fetch
1205: $default - Default value for the paramter.
1206:
1207: =cut
1208:
1209: sub get_response_param {
1210: my ($id,$name,$default)=@_;
1211: my $parameter;
1212: if ($env{'request.state'} eq 'construct' &&
1213: defined($Apache::inputtags::params{$name})) {
1214: $parameter=$Apache::inputtags::params{$name};
1215: } else {
1216: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
1217: }
1218: if (!defined($parameter) || $parameter eq '') {
1219: $parameter = $default;
1220: }
1221: return $parameter;
1222: }
1223:
1224: sub submitted {
1225: my ($who)=@_;
1226:
1227: # when scatron grading any submission is a submission
1228: if ($env{'form.submitted'} eq 'scantron') { return 1; }
1229: # if the caller only cared if this was a scantron submission
1230: if ($who eq 'scantron') { return 0; }
1231: # if the Submit Answer button for this particular part was pressed
1232: my $partid=$Apache::inputtags::part;
1233: if ($env{'form.submitted'} eq "part_$partid") {
1234: return 1;
1235: }
1236: if ($env{'form.submitted'} eq "yes"
1237: && defined($env{'form.submit_'.$partid})) {
1238: return 1;
1239: }
1240: # Submit All button on a .page was pressed
1241: if (defined($env{'form.all_submit'})) { return 1; }
1242: # otherwise no submission occurred
1243: return 0;
1244: }
1245:
1246: sub add_to_gradingqueue {
1247: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1248: if ( $courseid eq ''
1249: || $symb eq ''
1250: || $env{'request.state'} eq 'construct'
1251: || $Apache::lonhomework::type ne 'problem') {
1252: return;
1253: }
1254:
1255: my %queue_info = ( 'type' => 'problem',
1256: 'time' => time);
1257:
1258: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
1259: $queue_info{'slot'}=
1260: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
1261: }
1262:
1263: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
1264: if ($result ne 'ok') {
1265: &Apache::lonxml::error("add_to_queue said $result");
1266: }
1267: }
1268:
1269: =pod
1270:
1271: =item check_status()
1272:
1273: basically undef and 0 (both false) mean that they still have work to do
1274: and all true values mean that they can't do any more work
1275:
1276: a return of undef means it is unattempted
1277: a return of 0 means it is attmpted and wrong but still has tries
1278: a return of 1 means it is marked correct
1279: a return of 2 means they have exceed maximum number of tries
1280: a return of 3 means it after the answer date
1281:
1282: =cut
1283:
1284: sub check_status {
1285: my ($id)=@_;
1286: if (!defined($id)) { $id=$Apache::inputtags::part; }
1287: my $curtime=&Apache::lonnet::EXT('system.time');
1288: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
1289: my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
1290: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
1291: if ( $opendate && $curtime > $opendate &&
1292: $duedate && $curtime > $duedate &&
1293: $answerdate && $curtime > $answerdate) {
1294: return 3;
1295: }
1296: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1297: if ($status =~ /^correct/) { return 1; }
1298: if (!$status) { return undef; }
1299: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
1300: if ($maxtries eq '') { $maxtries=2; }
1301: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
1302: if ($curtries < $maxtries) { return 0; }
1303: return 2;
1304: }
1305:
1306: =pod
1307:
1308: =item setup_prior_tries_hash()
1309:
1310: Foreach each past .submission $func is called with 3 arguments
1311: - the mode to set things up for (currently always 'grade')
1312: - the stored .submission string
1313: - The expansion of $data
1314:
1315: $data is an array ref containing elements that are either
1316: - scalars that are other elements of the history hash to pass to $func
1317: - ref to data to be passed untouched to $func
1318:
1319: =cut
1320:
1321: sub setup_prior_tries_hash {
1322: my ($func,$data) = @_;
1323: my $part = $Apache::inputtags::part;
1324: my $id = $Apache::inputtags::response[-1];
1325: foreach my $i (1..$Apache::lonhomework::history{'version'}) {
1326: my $sub_key = "$i:resource.$part.$id.submission";
1327: next if (!exists($Apache::lonhomework::history{$sub_key}));
1328: my @other_data;
1329: foreach my $datum (@{ $data }) {
1330: if (ref($datum)) {
1331: push(@other_data,$datum);
1332: } else {
1333: my $info_key = "$i:resource.$part.$id.$datum";
1334: push(@other_data,$Apache::lonhomework::history{$info_key});
1335: }
1336: }
1337:
1338: my $output =
1339: &$func('grade',
1340: $Apache::lonhomework::history{$sub_key},
1341: \@other_data);
1342: if (defined($output)) {
1343: $Apache::inputtags::submission_display{$sub_key} = $output;
1344: }
1345: }
1346: }
1347:
1348: 1;
1349: __END__
1350:
1351: =pod
1352:
1353: =cut
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