1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.137 2006/03/08 22:17:17 albertel 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: package Apache::response;
30: use strict;
31: use Apache::lonlocal;
32: use Apache::lonnet;
33:
34: BEGIN {
35: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse'));
36: }
37:
38: sub start_response {
39: my ($parstack,$safeeval)=@_;
40: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
41: if ($#Apache::inputtags::import > -1) {
42: &Apache::lonxml::debug("Turning :$id: into");
43: $id = join('_',@Apache::inputtags::import).'_'.$id;
44: &Apache::lonxml::debug("New :$id:");
45: }
46: push (@Apache::inputtags::response,$id);
47: push (@Apache::inputtags::responselist,$id);
48: @Apache::inputtags::inputlist=();
49: if ($Apache::inputtags::part eq '' &&
50: !$Apache::lonhomework::ignore_response_errors) {
51: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
52: }
53: if ($Apache::inputtags::response_with_no_part &&
54: $Apache::inputtags::part ne '0') {
55: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
56: }
57: if ($Apache::inputtags::part eq '0') {
58: $Apache::inputtags::response_with_no_part=1;
59: }
60: return $id;
61: }
62:
63: sub end_response {
64: #pop @Apache::inputtags::response;
65: @Apache::inputtags::inputlist=();
66: return '';
67: }
68:
69: sub start_hintresponse {
70: my ($parstack,$safeeval)=@_;
71: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
72: push (@Apache::inputtags::hint,$id);
73: push (@Apache::inputtags::hintlist,$id);
74: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
75: return $id;
76: }
77:
78: sub end_hintresponse {
79: pop @Apache::inputtags::hint;
80: if (defined($Apache::inputtags::paramstack[-1])) {
81: %Apache::inputtags::params=
82: @{ pop(@Apache::inputtags::paramstack) };
83: }
84: return '';
85: }
86:
87: my @randomseeds;
88: sub pushrandomnumber {
89: my $rand_alg=&Apache::lonnet::get_rand_alg();
90: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
91: $rand_alg eq '64bit2') {
92: # do nothing
93: } else {
94: my @seed=&Math::Random::random_get_seed();
95: push(@randomseeds,\@seed);
96: }
97: &Apache::response::setrandomnumber(@_);
98: }
99: sub poprandomnumber {
100: my $rand_alg=&Apache::lonnet::get_rand_alg();
101: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
102: $rand_alg eq '64bit2') {
103: return;
104: }
105: my $seed=pop(@randomseeds);
106: if ($seed) {
107: &Math::Random::random_set_seed(@$seed);
108: } else {
109: &Apache::lonxml::error("Unable to restore random algorithm.");
110: }
111: }
112:
113: sub setrandomnumber {
114: my ($ignore_id2) = @_;
115: my $rndseed;
116: $rndseed=&Apache::structuretags::setup_rndseed();
117: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
118: &Apache::lonxml::debug("randseed $rndseed");
119: # $rndseed=unpack("%32i",$rndseed);
120: my $rand_alg=&Apache::lonnet::get_rand_alg();
121: my ($rndmod,$rndmod2);
122:
123: my ($id1,$id2,$shift_amt);
124: if ($Apache::lonhomework::parsing_a_problem) {
125: $id1=$Apache::inputtags::part;
126: if (defined($Apache::inputtags::response[-1])) {
127: $id2=$Apache::inputtags::response[-1];
128: }
129: $shift_amt=scalar(@Apache::inputtags::responselist);
130: } elsif ($Apache::lonhomework::parsing_a_task) {
131: $id1=$Apache::bridgetask::dimension;
132: if (!$ignore_id2 && defined($Apache::bridgetask::instance[-1])) {
133: $id2=$Apache::bridgetask::instance[-1];
134: }
135: $shift_amt=scalar(@Apache::bridgetask::instance);
136: }
137: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
138: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
139: $rand_alg eq '64bit2') {
140: $rndmod=(&Apache::lonnet::numval($id1) << 10);
141: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
142: } elsif ($rand_alg eq '64bit3') {
143: $rndmod=(&Apache::lonnet::numval2($id1) << 10);
144: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
145: } elsif ($rand_alg eq '64bit4') {
146: my $shift=(4*$shift_amt)%30;
147: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
148: if (defined($id2)) {
149: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
150: }
151: } else {
152: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
153: }
154:
155: if ($rndseed =~/([,:])/) {
156: my $char=$1;
157: use integer;
158: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
159: $num1+=$rndmod;
160: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
161: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
162: $rndseed=$num1.$char.$num2;
163: } else {
164: $rndseed+=$rndmod;
165: if($Apache::lonnet::_64bit) {
166: use integer;
167: $rndseed=(($rndseed<<32)>>32);
168: }
169: }
170: &Apache::lonxml::debug("randseed $rndmod $rndseed");
171: &Apache::lonnet::setup_random_from_rndseed($rndseed);
172: return '';
173: }
174:
175: sub meta_parameter_write {
176: my ($name,$type,$default,$display)=@_;
177: my $partref=$Apache::inputtags::part;
178: my $result='<parameter part="'.$Apache::inputtags::part.'"';
179: if (defined($Apache::inputtags::response[-1])) {
180: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
181: $partref.='_'.$Apache::inputtags::response[-1];
182: }
183: $result.= ' name="'.$name.'"'.
184: ' type="'.$type.'"'.
185: (defined($default)?' default="'.$default.'"':'').
186: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
187: .'></parameter>'
188: ."\n";
189: return $result;
190: }
191:
192: sub meta_package_write {
193: my $name=shift;
194: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
195: if(defined($Apache::inputtags::response[-1])) {
196: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
197: }
198: $result.=' package="'.$name.'"></parameter>'."\n";
199: return $result;
200: }
201:
202: sub meta_stores_write {
203: my ($name,$type,$display)=@_;
204: my $partref=$Apache::inputtags::part;
205: my $result = '<stores part="'.$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="'.$type.'"'.
212: ' display="'.$display.' [Part: '.$partref.']"'.
213: "></stores>\n";
214: }
215:
216: sub mandatory_part_meta {
217: #
218: # Autogenerate metadata for mandatory
219: # input (from RAT or lonparmset) and
220: # output (to lonspreadsheet)
221: # of each part
222: #
223: return
224: # &meta_parameter_write('opendate','date_start','',
225: # 'Opening Date').
226: # &meta_parameter_write('duedate','date_end','',
227: # 'Due Date').
228: # &meta_parameter_write('answerdate','date_start','',
229: # 'Show Answer Date').
230: # &meta_parameter_write('weight','int_zeropos','',
231: # 'Available Points').
232: # &meta_parameter_write('maxtries','int_pos','',
233: # 'Maximum Number of Tries').
234: &meta_package_write('part').
235: &meta_stores_write('solved','string',
236: 'Problem Status').
237: &meta_stores_write('tries','int_zeropos',
238: 'Number of Attempts').
239: &meta_stores_write('awarded','float',
240: 'Partial Credit Factor');
241: #
242: # Note: responseid-specific data 'submission' and 'awarddetail'
243: # not available to spreadsheet -> skip here
244: #
245: }
246:
247: sub meta_part_order {
248: if (@Apache::inputtags::partlist) {
249: my @parts=@Apache::inputtags::partlist;
250: shift(@parts);
251: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
252: } else {
253: return '<partorder>0</partorder>'."\n";
254: }
255: }
256:
257: sub meta_response_order {
258: if (@Apache::inputtags::responselist) {
259: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
260: '</responseorder>'."\n";
261: }
262: }
263:
264: sub check_for_previous {
265: my ($curresponse,$partid,$id) = @_;
266: my %previous;
267: $previous{'used'} = 0;
268: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
269: if ($key =~ /resource\.$partid\.$id\.submission$/) {
270: &Apache::lonxml::debug("Trying $key");
271: my $pastresponse=$Apache::lonhomework::history{$key};
272: if ($pastresponse eq $curresponse) {
273: $previous{'used'} = 1;
274: my $history;
275: if ( $key =~ /^(\d+):/ ) {
276: $history=$1;
277: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
278: $previous{'last'}='0';
279: push(@{ $previous{'version'} },$history);
280: } else {
281: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
282: $previous{'last'}='1';
283: }
284: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
285: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
286: }
287: }
288: }
289: &Apache::lonhomework::showhash(%previous);
290: return %previous;
291: }
292:
293: sub handle_previous {
294: my ($previous,$ad)=@_;
295: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
296: if ($$previous{'last'}) {
297: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
298: push(@Apache::inputtags::previous_version,$$previous{'version'});
299: } elsif ($Apache::lonhomework::type ne 'survey') {
300: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
301: push(@Apache::inputtags::previous_version,$$previous{'version'});
302: }
303: }
304: }
305:
306: sub view_or_modify {
307: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
308: my $myself=0;
309: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
310: $myself=1;
311: }
312: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
313: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
314: if ($mgr) { return "M"; }
315: if ($vgr) { return "V"; }
316: if ($myself) { return "V"; }
317: return '';
318: }
319:
320: sub start_dataresponse {
321: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
322: my $id = &Apache::response::start_response($parstack,$safeeval);
323: my $result;
324: if ($target eq 'web') {
325: $result = $token->[2]->{'display'}.':';
326: } elsif ($target eq 'meta') {
327: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
328: $token->[2]->{'type'},
329: $token->[2]->{'display'});
330: $result .= &Apache::response::meta_package_write('dataresponse');
331: }
332: return $result;
333: }
334:
335: sub end_dataresponse {
336: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
337: my $result;
338: if ( $target eq 'web' ) {
339: } elsif ($target eq 'grade' ) {
340: if ( defined $env{'form.submitted'}) {
341: my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser();
342: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
343: if ($allowed) {
344: &Apache::response::setup_params('dataresponse',$safeeval);
345: my $partid = $Apache::inputtags::part;
346: my $id = $Apache::inputtags::response['-1'];
347: my $response = $env{'form.HWVAL_'.$id};
348: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
349: if ( $response =~ /[^\s]/) {
350: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
351: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
352: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
353: }
354: } else {
355: $result='Not Permitted to change values.'
356: }
357: }
358: }
359: &Apache::response::end_response;
360: return $result;
361: }
362:
363: sub start_customresponse {
364: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
365: my $id = &Apache::response::start_response($parstack,$safeeval);
366: push(@Apache::lonxml::namespace,'customresponse');
367: my $result;
368: undef($Apache::response::custom_answer);
369: &Apache::lonxml::register('Apache::response',('answer'));
370: if ($target eq 'web') {
371: if ( &Apache::response::show_answer() ) {
372: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
373: $safeeval);
374: $Apache::inputtags::answertxt{$id}=$answer;
375: }
376: } elsif ($target eq 'edit') {
377: $result.=&Apache::edit::tag_start($target,$token);
378: $result.=&Apache::edit::text_arg('String to display for answer:',
379: 'answerdisplay',$token);
380: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
381: } elsif ($target eq 'modified') {
382: my $constructtag;
383: $constructtag=&Apache::edit::get_new_args($token,$parstack,
384: $safeeval,'answerdisplay');
385: if ($constructtag) {
386: $result = &Apache::edit::rebuild_tag($token);
387: $result.=&Apache::edit::handle_insert();
388: }
389: } elsif ($target eq 'answer' || $target eq 'grade') {
390: &Apache::response::reset_params();
391: } elsif ($target eq 'meta') {
392: $result .= &Apache::response::meta_package_write('customresponse');
393: }
394: return $result;
395: }
396:
397: sub end_customresponse {
398: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
399: my $result;
400: my $part=$Apache::inputtags::part;
401: my $id=$Apache::inputtags::response[-1];
402: if ( $target eq 'grade' && &Apache::response::submitted() ) {
403: my $response = &Apache::response::getresponse();
404: if ( $response =~ /[^\s]/ &&
405: $Apache::response::custom_answer_type eq 'loncapa/perl') {
406: if (!$Apache::lonxml::default_homework_loaded) {
407: &Apache::lonxml::default_homework_load($safeeval);
408: }
409: my %previous = &Apache::response::check_for_previous($response,
410: $part,$id);
411: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
412: $response;
413: my $error;
414: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
415: $response;
416:
417: my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer.'}',$safeeval);
418: if (!&Apache::inputtags::valid_award($award)) {
419: $error = $award;
420: $award = 'ERROR';
421: }
422: &Apache::response::handle_previous(\%previous,$award);
423: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
424: $award;
425: if ($error) {
426: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
427: $error;
428: }
429: }
430: }
431: pop(@Apache::lonxml::namespace);
432: &Apache::lonxml::deregister('Apache::response',('answer'));
433: &Apache::response::end_response();
434: return $result;
435: }
436:
437: sub start_answer {
438: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
439: my $result;
440: $Apache::response::custom_answer=
441: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser);
442: $Apache::response::custom_answer_type=
443: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval));
444: $Apache::response::custom_answer_type =~ s/\s+//g;
445: if ($target eq "edit" ) {
446: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
447: $result.=&Apache::edit::editfield($token->[1],
448: $Apache::response::custom_answer,
449: '',80,4);
450: } elsif ( $target eq "modified" ) {
451: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
452: }
453: return $result;
454: }
455:
456: sub end_answer {
457: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
458: if ($target eq 'edit' ) {
459: return &Apache::edit::end_table();
460: }
461: }
462:
463: sub decide_package {
464: my ($tagstack)=@_;
465: my $package;
466: if ($$tagstack[-1] eq 'parameter') {
467: $package='part';
468: } else {
469: my $i=-1;
470: while (defined($$tagstack[$i])) {
471: if ($$tagstack[$i] =~ /(response|hint)$/) {
472: $package=$$tagstack[$i];
473: last;
474: }
475: $i--;
476: }
477: }
478: return $package;
479: }
480:
481: sub start_responseparam {
482: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
483: my $result='';
484: if ($target eq 'meta') {
485: $result = &meta_parameter_write($token->[2]->{'name'},
486: $token->[2]->{'type'},
487: $token->[2]->{'default'},
488: $token->[2]->{'description'});
489: } elsif ($target eq 'edit') {
490: $result.=&Apache::edit::tag_start($target,$token);
491: my $optionlist;
492: my $package=&decide_package($tagstack);
493: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
494: if ($key =~ /^\Q$package\E&(.*)&display$/) {
495: $optionlist.='<option value="'.$1.'">'.
496: $Apache::lonnet::packagetab{$key}.'</option>';
497: }
498: }
499: if (defined($optionlist)) {
500: $result.='Use template: <select name="'.
501: &Apache::edit::html_element_name('parameter_package').'">'.
502: '<option value=""></option>'.$optionlist.'</select><br />';
503: }
504: $result.=&Apache::edit::text_arg('Name:','name',$token).
505: &Apache::edit::text_arg('Type:','type',$token).
506: &Apache::edit::text_arg('Description:','description',$token).
507: &Apache::edit::text_arg('Default:','default',$token).
508: "</td></tr>";
509: $result.=&Apache::edit::end_table;
510: } elsif ($target eq 'modified') {
511: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
512: $safeeval,'name','type',
513: 'description','default');
514: my $element=&Apache::edit::html_element_name('parameter_package');
515: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
516: my $name=$env{"form.$element"};
517: my $tag=&decide_package($tagstack);
518: $token->[2]->{'name'}=$name;
519: $token->[2]->{'type'}=
520: $Apache::lonnet::packagetab{"$tag&$name&type"};
521: $token->[2]->{'description'}=
522: $Apache::lonnet::packagetab{"$tag&$name&display"};
523: $token->[2]->{'default'}=
524: $Apache::lonnet::packagetab{"$tag&$name&default"};
525: $constructtag=1;
526: }
527: if ($constructtag) {
528: $result = &Apache::edit::rebuild_tag($token);
529: $result.=&Apache::edit::handle_insert();
530: }
531: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
532: $target eq 'tex' || $target eq 'analyze' ) {
533: if ($env{'request.state'} eq 'construct') {
534: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
535: my $default=&Apache::lonxml::get_param('default',$parstack,
536: $safeeval);
537: if ($name) {$Apache::inputtags::params{$name}=$default;}
538: }
539: }
540: return $result;
541: }
542:
543: sub end_responseparam {
544: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
545: if ($target eq 'edit') { return ('','no'); }
546: return '';
547: }
548:
549: sub start_parameter {
550: return &start_responseparam(@_);
551: }
552:
553: sub end_parameter {
554: return &end_responseparam(@_);
555: }
556:
557: sub reset_params {
558: %Apache::inputtags::params=();
559: }
560:
561: sub setup_params {
562: my ($tag,$safeeval) = @_;
563:
564: if ($env{'request.state'} eq 'construct') { return; }
565: my %paramlist=();
566: foreach my $key (keys(%Apache::lonnet::packagetab)) {
567: if ($key =~ /^$tag/) {
568: my ($package,$name) = split(/&/,$key);
569: $paramlist{$name}=1;
570: }
571: }
572: foreach my $key (keys(%paramlist)) {
573: my $entry= 'resource.'.$Apache::inputtags::part;
574: if (defined($Apache::inputtags::response[-1])) {
575: $entry.='_'.$Apache::inputtags::response[-1];
576: }
577: $entry.='.'.$key;
578: &Apache::lonxml::debug("looking for $entry");
579: my $value = &Apache::lonnet::EXT("$entry");
580: &Apache::lonxml::debug("$key has value :$value:");
581: if ($value eq 'con_lost' || $value =~ /^error:/) {
582: &Apache::lonxml::debug("using nothing");
583: $Apache::inputtags::params{$key}='';
584: } else {
585: my $string="{return qq\0".$value."\0}";
586: my $newvalue=&Apache::run::run($string,$safeeval,1);
587: if (defined($newvalue)) { $value=$newvalue; }
588: $Apache::inputtags::params{$key}=$value;
589: }
590: }
591: }
592:
593: {
594: my @answer_bits;
595:
596: sub answer_header {
597: my ($type,$increment) = @_;
598: my $result;
599: if ($env{'form.answer_output_mode'} eq 'tex') {
600: undef(@answer_bits);
601: my $bit;
602: if ($Apache::lonhomework::type eq 'exam') {
603: $bit = ($Apache::lonxml::counter+$increment).') ';
604: } else {
605: $bit .= ' Answer for Part: \verb|'.
606: $Apache::inputtags::part.'| ';
607: }
608: push(@answer_bits,$bit);
609: } else {
610: $result = '<table border="1"><tr>';
611: if ($Apache::lonhomework::type eq 'exam') {
612: $result .= '<td>'.$Apache::lonxml::counter+$increment. ')</td>';
613: } else {
614: $result .= '<td>Answer for Part:'.$Apache::inputtags::part.'</td>';
615: }
616: $result .= "\n";
617: }
618: return $result;
619: }
620:
621: sub answer_part {
622: my ($type,$answer) = @_;
623: my $result;
624: if ($env{'form.answer_output_mode'} eq 'tex') {
625: my $to_use='|';
626: foreach my $value (32..126) {
627: my $char=pack('c',$value);
628: if ($answer !~ /\Q$char\E/) {
629: $to_use=$char;
630: last;
631: }
632: }
633: if ($answer ne '') {
634: push(@answer_bits,'\verb'.$to_use.$answer.$to_use);
635: }
636: } else {
637: $result = '<td>'.$answer.'</td>';
638: }
639: return $result;
640: }
641:
642: sub answer_footer {
643: my ($type) = @_;
644: my $result;
645: if ($env{'form.answer_output_mode'} eq 'tex') {
646: my $columns = scalar(@answer_bits);
647: $result = ' \vskip 0 mm \noindent \begin{tabular}{|'.'c|'x$columns.'}\hline ';
648: $result .= join(' & ',@answer_bits);
649: $result .= ' \\\\ \\hline \end{tabular} \vskip 0 mm ';
650: } else {
651: $result = '</tr></table>';
652: }
653: return $result;
654: }
655:
656: }
657:
658: sub showallfoils {
659: if (defined($env{'form.showallfoils'})) {
660: my ($symb)=&Apache::lonxml::whichuser();
661: if (($env{'request.state'} eq 'construct') ||
662: ($env{'user.adv'} && $symb eq '') ||
663: ($Apache::lonhomework::viewgrades) ) {
664: return 1;
665: }
666: }
667: if ($Apache::lonhomework::type eq 'survey') { return 1; }
668: return 0;
669: }
670:
671: sub getresponse {
672: my ($temp,$resulttype)=@_;
673: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
674: my $response;
675: if (!defined($temp)) {
676: $temp=1;
677: } else {
678: $formparm.=":$temp";
679: }
680: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
681: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
682: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
683: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
684: if ($env{'form.submitted'} eq 'scantron') {
685: my $part = $Apache::inputtags::part;
686: my $id = $Apache::inputtags::response[-1];
687: $response = $env{'scantron.'.($Apache::lonxml::counter+$temp-1).
688: '.answer'};
689: # save bubbled letter for later
690: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
691: $response;
692: if ($resulttype ne 'letter') {
693: if ($resulttype eq 'A is 1') {
694: $response = $let_to_num{$response}+1;
695: } else {
696: $response = $let_to_num{$response};
697: }
698: }
699: } else {
700: $response = $env{$formparm};
701: }
702: return $response;
703: }
704:
705: sub repetition {
706: my $id = $Apache::inputtags::part;
707: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
708: if (!defined($weight) || ($weight eq '')) { $weight=1; }
709: my $repetition = int($weight/10);
710: if ($weight % 10 != 0) { $repetition++; }
711: return $repetition;
712: }
713:
714: sub scored_response {
715: my ($part,$id)=@_;
716: my $repetition=&repetition();
717: my $score=0;
718: for (my $i=0;$i<$repetition;$i++) {
719: # A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
720: my $increase=&Apache::response::getresponse($i+1);
721: if ($increase ne '') { $score+=$increase+1; }
722: }
723: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
724: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
725: my $pcr=$score/$weight;
726: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
727: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
728: 'ASSIGNED_SCORE';
729: return $repetition;
730: }
731:
732: sub whichorder {
733: my ($max,$randomize,$showall,$hash)=@_;
734: #&Apache::lonxml::debug("man $max randomize $randomize");
735: if (!defined(@{ $$hash{'names'} })) { return; }
736: my @names = @{ $$hash{'names'} };
737: my @whichopt =();
738: my (%top,@toplist,%bottom,@bottomlist);
739: if (!($showall || ($randomize eq 'no'))) {
740: my $current=0;
741: foreach my $name (@names) {
742: $current++;
743: if ($$hash{"$name.location"} eq 'top') {
744: $top{$name}=$current;
745: } elsif ($$hash{"$name.location"} eq 'bottom') {
746: $bottom{$name}=$current;
747: }
748: }
749: }
750: my $topcount=0;
751: my $bottomcount=0;
752: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
753: && ($#names > -1)) {
754: #&Apache::lonxml::debug("Have $#whichopt max is $max");
755: my $aopt;
756: if ($showall || ($randomize eq 'no')) {
757: $aopt=0;
758: } else {
759: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
760: }
761: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
762: $aopt=splice(@names,$aopt,1);
763: #&Apache::lonxml::debug("Picked $aopt");
764: if ($top{$aopt}) {
765: $toplist[$top{$aopt}]=$aopt;
766: $topcount++;
767: } elsif ($bottom{$aopt}) {
768: $bottomlist[$bottom{$aopt}]=$aopt;
769: $bottomcount++;
770: } else {
771: push (@whichopt,$aopt);
772: }
773: }
774: for (my $i=0;$i<=$#toplist;$i++) {
775: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
776: }
777: for (my $i=0;$i<=$#bottomlist;$i++) {
778: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
779: }
780: return @whichopt;
781: }
782:
783: sub show_answer {
784: my $part = $Apache::inputtags::part;
785: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
786: my $status = $Apache::inputtags::status[-1];
787: return ( ($award =~ /^correct/
788: && lc($Apache::lonhomework::problemstatus) ne 'no')
789: || $status eq "SHOW_ANSWER");
790: }
791:
792: sub analyze_store_foilgroup {
793: my ($shown,$attrs)=@_;
794: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
795: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
796: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
797: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
798: foreach my $attr (@$attrs) {
799: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
800: $Apache::response::foilgroup{"$name.".$attr};
801: }
802: }
803: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
804: }
805:
806: sub check_if_computed {
807: my ($token,$parstack,$safeeval,$name)=@_;
808: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
809: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
810: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
811: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
812: }
813: }
814:
815: sub pick_foil_for_concept {
816: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
817: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
818: my @names = @{ $Apache::response::conceptgroup{'names'} };
819: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
820: my $name=$names[$pick];
821: push @{ $Apache::response::foilgroup{'names'} }, $name;
822: foreach my $attr (@$attrs) {
823: $Apache::response::foilgroup{"$name.".$attr} =
824: $Apache::response::conceptgroup{"$name.".$attr};
825: }
826: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
827: $Apache::response::foilgroup{"$name.concept"} = $concept;
828: &Apache::lonxml::debug("Selecting $name in $concept");
829: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
830: if ($target eq 'analyze') {
831: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
832: $concept);
833: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
834: $Apache::response::conceptgroup{'names'};
835: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
836: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
837: $name);
838: foreach my $attr (@$attrs) {
839: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
840: $Apache::response::conceptgroup{"$name.$attr"};
841: }
842: }
843: }
844: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
845: $hinthash->{"$part_id.concept.$concept"}=
846: $Apache::response::conceptgroup{'names'};
847:
848: }
849:
850: sub get_response_param {
851: my ($id,$name,$default)=@_;
852: my $parameter;
853: if ($env{'request.state'} eq 'construct' &&
854: defined($Apache::inputtags::params{$name})) {
855: $parameter=$Apache::inputtags::params{$name};
856: } else {
857: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
858: }
859: if (!defined($parameter) || $parameter eq '') {
860: $parameter = $default;
861: }
862: return $parameter;
863: }
864:
865: sub submitted {
866: my ($who)=@_;
867:
868: # when scatron grading any submission is a submission
869: if ($env{'form.submitted'} eq 'scantron') { return 1; }
870: # if the caller only cared if this was a scantron submission
871: if ($who eq 'scantron') { return 0; }
872: # if the Submit Answer button for this particular part was pressed
873: my $partid=$Apache::inputtags::part;
874: if (defined($env{'form.submit_'.$partid})) { return 1; }
875: # Submit All button on a .page was pressed
876: if (defined($env{'form.all_submit'})) { return 1; }
877: # otherwise no submission occured
878: return 0;
879: }
880:
881: sub add_to_gradingqueue {
882: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
883: if ( $courseid eq ''
884: || $symb eq ''
885: || $env{'request.state'} eq 'construct'
886: || $Apache::lonhomework::type ne 'problem') {
887: return;
888: }
889:
890: my %queue_info = ( 'type' => 'problem',
891: 'time' => time);
892:
893: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
894: $queue_info{'slot'}=
895: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
896: }
897:
898: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
899: if ($result ne 'ok') {
900: &Apache::lonxml::error("add_to_queue said $result");
901: }
902: }
903:
904: # basically undef and 0 (both false) mean that they still have work to do
905: # and all true values mean that they can't do any more work
906: #
907: # a return of undef means it is unattempted
908: # a return of 0 means it is attmpted and wrong but still has tries
909: # a return of 1 means it is marked correct
910: # a return of 2 means they have exceed maximum number of tries
911: # a return of 3 means it after the answer date
912: sub check_status {
913: my ($id)=@_;
914: if (!$id) { $id=$Apache::linputtags::part; }
915: my $curtime=&Apache::lonnet::EXT('system.time');
916: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
917: my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
918: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
919: if ( $opendate && $curtime > $opendate &&
920: $duedate && $curtime > $duedate &&
921: $answerdate && $curtime > $answerdate) {
922: return 3;
923: }
924: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
925: if ($status =~ /^correct/) { return 1; }
926: if (!$status) { return undef; }
927: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
928: if ($maxtries eq '') { $maxtries=2; }
929: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
930: if ($curtries < $maxtries) { return 0; }
931: return 2;
932: }
933:
934: 1;
935: __END__
936:
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