1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.134 2005/12/20 16:31:50 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 $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
41: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
42: if ($#Apache::inputtags::import > -1) {
43: &Apache::lonxml::debug("Turning :$id: into");
44: $id = join('_',@Apache::inputtags::import).'_'.$id;
45: &Apache::lonxml::debug("New :$id:");
46: }
47: push (@Apache::inputtags::response,$id);
48: push (@Apache::inputtags::responselist,$id);
49: @Apache::inputtags::inputlist=();
50: if ($Apache::inputtags::part eq '' &&
51: !$Apache::lonhomework::ignore_response_errors) {
52: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
53: }
54: if ($Apache::inputtags::response_with_no_part &&
55: $Apache::inputtags::part ne '0') {
56: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
57: }
58: if ($Apache::inputtags::part eq '0') {
59: $Apache::inputtags::response_with_no_part=1;
60: }
61: return $id;
62: }
63:
64: sub end_response {
65: #pop @Apache::inputtags::response;
66: @Apache::inputtags::inputlist=();
67: return '';
68: }
69:
70: sub start_hintresponse {
71: my ($parstack,$safeeval)=@_;
72: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
73: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
74: push (@Apache::inputtags::hint,$id);
75: push (@Apache::inputtags::hintlist,$id);
76: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
77: return $id;
78: }
79:
80: sub end_hintresponse {
81: pop @Apache::inputtags::hint;
82: if (defined($Apache::inputtags::paramstack[-1])) {
83: %Apache::inputtags::params=
84: @{ pop(@Apache::inputtags::paramstack) };
85: }
86: return '';
87: }
88:
89: my @randomseeds;
90: sub pushrandomnumber {
91: my $rand_alg=&Apache::lonnet::get_rand_alg();
92: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
93: $rand_alg eq '64bit2') {
94: # do nothing
95: } else {
96: my @seed=&Math::Random::random_get_seed();
97: push(@randomseeds,\@seed);
98: }
99: &Apache::response::setrandomnumber(@_);
100: }
101: sub poprandomnumber {
102: my $rand_alg=&Apache::lonnet::get_rand_alg();
103: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
104: $rand_alg eq '64bit2') {
105: return;
106: }
107: my $seed=pop(@randomseeds);
108: if ($seed) {
109: &Math::Random::random_set_seed(@$seed);
110: } else {
111: &Apache::lonxml::error("Unable to restore random algorithm.");
112: }
113: }
114:
115: sub setrandomnumber {
116: my ($ignore_id2) = @_;
117: my $rndseed;
118: $rndseed=&Apache::structuretags::setup_rndseed();
119: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
120: &Apache::lonxml::debug("randseed $rndseed");
121: # $rndseed=unpack("%32i",$rndseed);
122: my $rand_alg=&Apache::lonnet::get_rand_alg();
123: my ($rndmod,$rndmod2);
124:
125: my ($id1,$id2,$shift_amt);
126: if ($Apache::lonhomework::parsing_a_problem) {
127: $id1=$Apache::inputtags::part;
128: if (defined($Apache::inputtags::response[-1])) {
129: $id2=$Apache::inputtags::response[-1];
130: }
131: $shift_amt=scalar(@Apache::inputtags::responselist);
132: } elsif ($Apache::lonhomework::parsing_a_task) {
133: $id1=$Apache::bridgetask::dimension;
134: if (!$ignore_id2 && defined($Apache::bridgetask::instance[-1])) {
135: $id2=$Apache::bridgetask::instance[-1];
136: }
137: $shift_amt=scalar(@Apache::bridgetask::instance);
138: }
139: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
140: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
141: $rand_alg eq '64bit2') {
142: $rndmod=(&Apache::lonnet::numval($id1) << 10);
143: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
144: } elsif ($rand_alg eq '64bit3') {
145: $rndmod=(&Apache::lonnet::numval2($id1) << 10);
146: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
147: } elsif ($rand_alg eq '64bit4') {
148: my $shift=(4*$shift_amt)%30;
149: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
150: if (defined($id2)) {
151: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
152: }
153: } else {
154: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
155: }
156:
157: if ($rndseed =~/([,:])/) {
158: my $char=$1;
159: use integer;
160: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
161: $num1+=$rndmod;
162: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
163: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
164: $rndseed=$num1.$char.$num2;
165: } else {
166: $rndseed+=$rndmod;
167: if($Apache::lonnet::_64bit) {
168: use integer;
169: $rndseed=(($rndseed<<32)>>32);
170: }
171: }
172: &Apache::lonxml::debug("randseed $rndmod $rndseed");
173: &Apache::lonnet::setup_random_from_rndseed($rndseed);
174: return '';
175: }
176:
177: sub meta_parameter_write {
178: my ($name,$type,$default,$display)=@_;
179: my $partref=$Apache::inputtags::part;
180: my $result='<parameter part="'.$Apache::inputtags::part.'"';
181: if (defined($Apache::inputtags::response[-1])) {
182: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
183: $partref.='_'.$Apache::inputtags::response[-1];
184: }
185: $result.= ' name="'.$name.'"'.
186: ' type="'.$type.'"'.
187: (defined($default)?' default="'.$default.'"':'').
188: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
189: .'></parameter>'
190: ."\n";
191: return $result;
192: }
193:
194: sub meta_package_write {
195: my $name=shift;
196: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
197: if(defined($Apache::inputtags::response[-1])) {
198: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
199: }
200: $result.=' package="'.$name.'"></parameter>'."\n";
201: return $result;
202: }
203:
204: sub meta_stores_write {
205: my ($name,$type,$display)=@_;
206: my $partref=$Apache::inputtags::part;
207: my $result = '<stores part="'.$Apache::inputtags::part.'"';
208: if (defined($Apache::inputtags::response[-1])) {
209: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
210: $partref.='_'.$Apache::inputtags::response[-1];
211: }
212: $result.= ' name="'.$name.'"'.
213: ' type="'.$type.'"'.
214: ' display="'.$display.' [Part: '.$partref.']"'.
215: "></stores>\n";
216: }
217:
218: sub mandatory_part_meta {
219: #
220: # Autogenerate metadata for mandatory
221: # input (from RAT or lonparmset) and
222: # output (to lonspreadsheet)
223: # of each part
224: #
225: return
226: # &meta_parameter_write('opendate','date_start','',
227: # 'Opening Date').
228: # &meta_parameter_write('duedate','date_end','',
229: # 'Due Date').
230: # &meta_parameter_write('answerdate','date_start','',
231: # 'Show Answer Date').
232: # &meta_parameter_write('weight','int_zeropos','',
233: # 'Available Points').
234: # &meta_parameter_write('maxtries','int_pos','',
235: # 'Maximum Number of Tries').
236: &meta_package_write('part').
237: &meta_stores_write('solved','string',
238: 'Problem Status').
239: &meta_stores_write('tries','int_zeropos',
240: 'Number of Attempts').
241: &meta_stores_write('awarded','float',
242: 'Partial Credit Factor');
243: #
244: # Note: responseid-specific data 'submission' and 'awarddetail'
245: # not available to spreadsheet -> skip here
246: #
247: }
248:
249: sub meta_part_order {
250: if (@Apache::inputtags::partlist) {
251: my @parts=@Apache::inputtags::partlist;
252: shift(@parts);
253: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
254: } else {
255: return '<partorder>0</partorder>'."\n";
256: }
257: }
258:
259: sub meta_response_order {
260: if (@Apache::inputtags::responselist) {
261: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
262: '</responseorder>'."\n";
263: }
264: }
265:
266: sub check_for_previous {
267: my ($curresponse,$partid,$id) = @_;
268: my %previous;
269: $previous{'used'} = 0;
270: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
271: if ($key =~ /resource\.$partid\.$id\.submission$/) {
272: &Apache::lonxml::debug("Trying $key");
273: my $pastresponse=$Apache::lonhomework::history{$key};
274: if ($pastresponse eq $curresponse) {
275: $previous{'used'} = 1;
276: my $history;
277: if ( $key =~ /^(\d+):/ ) {
278: $history=$1;
279: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
280: $previous{'last'}='0';
281: push(@{ $previous{'version'} },$history);
282: } else {
283: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
284: $previous{'last'}='1';
285: }
286: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
287: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
288: }
289: }
290: }
291: &Apache::lonhomework::showhash(%previous);
292: return %previous;
293: }
294:
295: sub handle_previous {
296: my ($previous,$ad)=@_;
297: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
298: if ($$previous{'last'}) {
299: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
300: push(@Apache::inputtags::previous_version,$$previous{'version'});
301: } elsif ($Apache::lonhomework::type ne 'survey') {
302: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
303: push(@Apache::inputtags::previous_version,$$previous{'version'});
304: }
305: }
306: }
307:
308: sub view_or_modify {
309: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
310: my $myself=0;
311: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
312: $myself=1;
313: }
314: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
315: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
316: if ($mgr) { return "M"; }
317: if ($vgr) { return "V"; }
318: if ($myself) { return "V"; }
319: return '';
320: }
321:
322: sub start_dataresponse {
323: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
324: my $id = &Apache::response::start_response($parstack,$safeeval);
325: my $result;
326: if ($target eq 'web') {
327: $result = $token->[2]->{'display'}.':';
328: } elsif ($target eq 'meta') {
329: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
330: $token->[2]->{'type'},
331: $token->[2]->{'display'});
332: $result .= &Apache::response::meta_package_write('dataresponse');
333: }
334: return $result;
335: }
336:
337: sub end_dataresponse {
338: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
339: my $result;
340: if ( $target eq 'web' ) {
341: } elsif ($target eq 'grade' ) {
342: if ( defined $env{'form.submitted'}) {
343: my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser();
344: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
345: if ($allowed) {
346: &Apache::response::setup_params('dataresponse',$safeeval);
347: my $partid = $Apache::inputtags::part;
348: my $id = $Apache::inputtags::response['-1'];
349: my $response = $env{'form.HWVAL_'.$id};
350: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
351: if ( $response =~ /[^\s]/) {
352: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
353: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
354: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
355: }
356: } else {
357: $result='Not Permitted to change values.'
358: }
359: }
360: }
361: &Apache::response::end_response;
362: return $result;
363: }
364:
365: sub start_customresponse {
366: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
367: my $id = &Apache::response::start_response($parstack,$safeeval);
368: push(@Apache::lonxml::namespace,'customresponse');
369: my $result;
370: undef($Apache::response::custom_answer);
371: &Apache::lonxml::register('Apache::response',('answer'));
372: if ($target eq 'web') {
373: if ( &Apache::response::show_answer() ) {
374: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
375: $safeeval);
376: $Apache::inputtags::answertxt{$id}=$answer;
377: }
378: } elsif ($target eq 'edit') {
379: $result.=&Apache::edit::tag_start($target,$token);
380: $result.=&Apache::edit::text_arg('String to display for answer:',
381: 'answerdisplay',$token);
382: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
383: } elsif ($target eq 'modified') {
384: my $constructtag;
385: $constructtag=&Apache::edit::get_new_args($token,$parstack,
386: $safeeval,'answerdisplay');
387: if ($constructtag) {
388: $result = &Apache::edit::rebuild_tag($token);
389: $result.=&Apache::edit::handle_insert();
390: }
391: } elsif ($target eq 'answer' || $target eq 'grade') {
392: &Apache::response::reset_params();
393: } elsif ($target eq 'meta') {
394: $result .= &Apache::response::meta_package_write('customresponse');
395: }
396: return $result;
397: }
398:
399: sub end_customresponse {
400: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
401: my $result;
402: my $part=$Apache::inputtags::part;
403: my $id=$Apache::inputtags::response[-1];
404: if ( $target eq 'grade' && &Apache::response::submitted() ) {
405: my $response = &Apache::response::getresponse();
406: if ( $response =~ /[^\s]/ &&
407: $Apache::response::custom_answer_type eq 'loncapa/perl') {
408: if (!$Apache::lonxml::default_homework_loaded) {
409: &Apache::lonxml::default_homework_load($safeeval);
410: }
411: my %previous = &Apache::response::check_for_previous($response,
412: $part,$id);
413: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
414: $response;
415: my $error;
416: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
417: $response;
418:
419: my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer.'}',$safeeval);
420: if (!&Apache::inputtags::valid_award($award)) {
421: $error = $award;
422: $award = 'ERROR';
423: }
424: &Apache::response::handle_previous(\%previous,$award);
425: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
426: $award;
427: if ($error) {
428: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
429: $error;
430: }
431: }
432: }
433: pop(@Apache::lonxml::namespace);
434: &Apache::lonxml::deregister('Apache::response',('answer'));
435: &Apache::response::end_response();
436: return $result;
437: }
438:
439: sub start_answer {
440: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
441: my $result;
442: $Apache::response::custom_answer=
443: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser);
444: $Apache::response::custom_answer_type=
445: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval));
446: $Apache::response::custom_answer_type =~ s/\s+//g;
447: if ($target eq "edit" ) {
448: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
449: $result.=&Apache::edit::editfield($token->[1],
450: $Apache::response::custom_answer,
451: '',80,4);
452: } elsif ( $target eq "modified" ) {
453: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
454: }
455: return $result;
456: }
457:
458: sub end_answer {
459: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
460: if ($target eq 'edit' ) {
461: return &Apache::edit::end_table();
462: }
463: }
464:
465: sub decide_package {
466: my ($tagstack)=@_;
467: my $package;
468: if ($$tagstack[-1] eq 'parameter') {
469: $package='part';
470: } else {
471: my $i=-1;
472: while (defined($$tagstack[$i])) {
473: if ($$tagstack[$i] =~ /(response|hint)$/) {
474: $package=$$tagstack[$i];
475: last;
476: }
477: $i--;
478: }
479: }
480: return $package;
481: }
482:
483: sub start_responseparam {
484: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
485: my $result='';
486: if ($target eq 'meta') {
487: $result = &meta_parameter_write($token->[2]->{'name'},
488: $token->[2]->{'type'},
489: $token->[2]->{'default'},
490: $token->[2]->{'description'});
491: } elsif ($target eq 'edit') {
492: $result.=&Apache::edit::tag_start($target,$token);
493: my $optionlist;
494: my $package=&decide_package($tagstack);
495: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
496: if ($key =~ /^\Q$package\E&(.*)&display$/) {
497: $optionlist.='<option value="'.$1.'">'.
498: $Apache::lonnet::packagetab{$key}.'</option>';
499: }
500: }
501: if (defined($optionlist)) {
502: $result.='Use template: <select name="'.
503: &Apache::edit::html_element_name('parameter_package').'">'.
504: '<option value=""></option>'.$optionlist.'</select><br />';
505: }
506: $result.=&Apache::edit::text_arg('Name:','name',$token).
507: &Apache::edit::text_arg('Type:','type',$token).
508: &Apache::edit::text_arg('Description:','description',$token).
509: &Apache::edit::text_arg('Default:','default',$token).
510: "</td></tr>";
511: $result.=&Apache::edit::end_table;
512: } elsif ($target eq 'modified') {
513: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
514: $safeeval,'name','type',
515: 'description','default');
516: my $element=&Apache::edit::html_element_name('parameter_package');
517: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
518: my $name=$env{"form.$element"};
519: my $tag=&decide_package($tagstack);
520: $token->[2]->{'name'}=$name;
521: $token->[2]->{'type'}=
522: $Apache::lonnet::packagetab{"$tag&$name&type"};
523: $token->[2]->{'description'}=
524: $Apache::lonnet::packagetab{"$tag&$name&display"};
525: $token->[2]->{'default'}=
526: $Apache::lonnet::packagetab{"$tag&$name&default"};
527: $constructtag=1;
528: }
529: if ($constructtag) {
530: $result = &Apache::edit::rebuild_tag($token);
531: $result.=&Apache::edit::handle_insert();
532: }
533: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
534: $target eq 'tex' || $target eq 'analyze' ) {
535: if ($env{'request.state'} eq 'construct') {
536: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
537: my $default=&Apache::lonxml::get_param('default',$parstack,
538: $safeeval);
539: if ($name) {$Apache::inputtags::params{$name}=$default;}
540: }
541: }
542: return $result;
543: }
544:
545: sub end_responseparam {
546: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
547: if ($target eq 'edit') { return ('','no'); }
548: return '';
549: }
550:
551: sub start_parameter {
552: return &start_responseparam(@_);
553: }
554:
555: sub end_parameter {
556: return &end_responseparam(@_);
557: }
558:
559: sub reset_params {
560: %Apache::inputtags::params=();
561: }
562:
563: sub setup_params {
564: my ($tag,$safeeval) = @_;
565:
566: if ($env{'request.state'} eq 'construct') { return; }
567: my %paramlist=();
568: foreach my $key (keys(%Apache::lonnet::packagetab)) {
569: if ($key =~ /^$tag/) {
570: my ($package,$name) = split(/&/,$key);
571: $paramlist{$name}=1;
572: }
573: }
574: foreach my $key (keys(%paramlist)) {
575: my $entry= 'resource.'.$Apache::inputtags::part;
576: if (defined($Apache::inputtags::response[-1])) {
577: $entry.='_'.$Apache::inputtags::response[-1];
578: }
579: $entry.='.'.$key;
580: &Apache::lonxml::debug("looking for $entry");
581: my $value = &Apache::lonnet::EXT("$entry");
582: &Apache::lonxml::debug("$key has value :$value:");
583: if ($value eq 'con_lost' || $value =~ /^error:/) {
584: &Apache::lonxml::debug("using nothing");
585: $Apache::inputtags::params{$key}='';
586: } else {
587: my $string="{return qq\0".$value."\0}";
588: my $newvalue=&Apache::run::run($string,$safeeval,1);
589: if (defined($newvalue)) { $value=$newvalue; }
590: $Apache::inputtags::params{$key}=$value;
591: }
592: }
593: }
594:
595: {
596: my @answer_bits;
597:
598: sub answer_header {
599: my ($type,$increment) = @_;
600: my $result;
601: if ($env{'form.answer_output_mode'} eq 'tex') {
602: undef(@answer_bits);
603: my $bit;
604: if ($Apache::lonhomework::type eq 'exam') {
605: $bit = ($Apache::lonxml::counter+$increment).') ';
606: } else {
607: $bit .= ' Answer for Part: \verb|'.
608: $Apache::inputtags::part.'| ';
609: }
610: push(@answer_bits,$bit);
611: } else {
612: $result = '<table border="1"><tr>';
613: if ($Apache::lonhomework::type eq 'exam') {
614: $result .= '<td>'.$Apache::lonxml::counter. ')</td>';
615: } else {
616: $result .= '<td>Answer for Part:'.$Apache::inputtags::part.'</td>';
617: }
618: $result .= "\n";
619: }
620: return $result;
621: }
622:
623: sub answer_part {
624: my ($type,$answer) = @_;
625: my $result;
626: if ($env{'form.answer_output_mode'} eq 'tex') {
627: my $to_use='|';
628: foreach my $value (32..126) {
629: my $char=pack('c',$value);
630: if ($answer !~ /\Q$char\E/) {
631: $to_use=$char;
632: last;
633: }
634: }
635: if ($answer ne '') {
636: push(@answer_bits,'\verb'.$to_use.$answer.$to_use);
637: }
638: } else {
639: $result = '<td>'.$answer.'</td>';
640: }
641: return $result;
642: }
643:
644: sub answer_footer {
645: my ($type) = @_;
646: my $result;
647: if ($env{'form.answer_output_mode'} eq 'tex') {
648: my $columns = scalar(@answer_bits);
649: $result = ' \vskip 0 mm \noindent \begin{tabular}{|'.'c|'x$columns.'}\hline ';
650: $result .= join(' & ',@answer_bits);
651: $result .= ' \\\\ \\hline \end{tabular} \vskip 0 mm ';
652: } else {
653: $result = '</tr></table>';
654: }
655: return $result;
656: }
657:
658: }
659:
660: sub showallfoils {
661: if (defined($env{'form.showallfoils'})) {
662: my ($symb)=&Apache::lonxml::whichuser();
663: if (($env{'request.state'} eq 'construct') ||
664: ($env{'user.adv'} && $symb eq '') ||
665: ($Apache::lonhomework::viewgrades) ) {
666: return 1;
667: }
668: }
669: if ($Apache::lonhomework::type eq 'survey') { return 1; }
670: return 0;
671: }
672:
673: sub getresponse {
674: my ($temp,$resulttype)=@_;
675: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
676: my $response;
677: if (!defined($temp)) {
678: $temp=1;
679: } else {
680: $formparm.=":$temp";
681: }
682: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
683: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
684: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
685: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
686: if ($env{'form.submitted'} eq 'scantron') {
687: my $part = $Apache::inputtags::part;
688: my $id = $Apache::inputtags::response[-1];
689: $response = $env{'scantron.'.($Apache::lonxml::counter+$temp-1).
690: '.answer'};
691: # save bubbled letter for later
692: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
693: $response;
694: if ($resulttype ne 'letter') {
695: if ($resulttype eq 'A is 1') {
696: $response = $let_to_num{$response}+1;
697: } else {
698: $response = $let_to_num{$response};
699: }
700: }
701: } else {
702: $response = $env{$formparm};
703: }
704: return $response;
705: }
706:
707: sub repetition {
708: my $id = $Apache::inputtags::part;
709: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
710: if (!defined($weight) || ($weight eq '')) { $weight=1; }
711: my $repetition = int($weight/10);
712: if ($weight % 10 != 0) { $repetition++; }
713: return $repetition;
714: }
715:
716: sub scored_response {
717: my ($part,$id)=@_;
718: my $repetition=&repetition();
719: my $score=0;
720: for (my $i=0;$i<$repetition;$i++) {
721: # A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
722: my $increase=&Apache::response::getresponse($i+1);
723: if ($increase ne '') { $score+=$increase+1; }
724: }
725: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
726: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
727: my $pcr=$score/$weight;
728: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
729: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
730: 'ASSIGNED_SCORE';
731: return $repetition;
732: }
733:
734: sub whichorder {
735: my ($max,$randomize,$showall,$hash)=@_;
736: #&Apache::lonxml::debug("man $max randomize $randomize");
737: if (!defined(@{ $$hash{'names'} })) { return; }
738: my @names = @{ $$hash{'names'} };
739: my @whichopt =();
740: my (%top,@toplist,%bottom,@bottomlist);
741: if (!($showall || ($randomize eq 'no'))) {
742: my $current=0;
743: foreach my $name (@names) {
744: $current++;
745: if ($$hash{"$name.location"} eq 'top') {
746: $top{$name}=$current;
747: } elsif ($$hash{"$name.location"} eq 'bottom') {
748: $bottom{$name}=$current;
749: }
750: }
751: }
752: my $topcount=0;
753: my $bottomcount=0;
754: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
755: && ($#names > -1)) {
756: #&Apache::lonxml::debug("Have $#whichopt max is $max");
757: my $aopt;
758: if ($showall || ($randomize eq 'no')) {
759: $aopt=0;
760: } else {
761: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
762: }
763: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
764: $aopt=splice(@names,$aopt,1);
765: #&Apache::lonxml::debug("Picked $aopt");
766: if ($top{$aopt}) {
767: $toplist[$top{$aopt}]=$aopt;
768: $topcount++;
769: } elsif ($bottom{$aopt}) {
770: $bottomlist[$bottom{$aopt}]=$aopt;
771: $bottomcount++;
772: } else {
773: push (@whichopt,$aopt);
774: }
775: }
776: for (my $i=0;$i<=$#toplist;$i++) {
777: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
778: }
779: for (my $i=0;$i<=$#bottomlist;$i++) {
780: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
781: }
782: return @whichopt;
783: }
784:
785: sub show_answer {
786: my $part = $Apache::inputtags::part;
787: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
788: my $status = $Apache::inputtags::status[-1];
789: return ( ($award =~ /^correct/
790: && lc($Apache::lonhomework::problemstatus) ne 'no')
791: || $status eq "SHOW_ANSWER");
792: }
793:
794: sub analyze_store_foilgroup {
795: my ($shown,$attrs)=@_;
796: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
797: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
798: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
799: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
800: foreach my $attr (@$attrs) {
801: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
802: $Apache::response::foilgroup{"$name.".$attr};
803: }
804: }
805: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
806: }
807:
808: sub check_if_computed {
809: my ($token,$parstack,$safeeval,$name)=@_;
810: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
811: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
812: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
813: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
814: }
815: }
816:
817: sub pick_foil_for_concept {
818: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
819: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
820: my @names = @{ $Apache::response::conceptgroup{'names'} };
821: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
822: my $name=$names[$pick];
823: push @{ $Apache::response::foilgroup{'names'} }, $name;
824: foreach my $attr (@$attrs) {
825: $Apache::response::foilgroup{"$name.".$attr} =
826: $Apache::response::conceptgroup{"$name.".$attr};
827: }
828: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
829: $Apache::response::foilgroup{"$name.concept"} = $concept;
830: &Apache::lonxml::debug("Selecting $name in $concept");
831: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
832: if ($target eq 'analyze') {
833: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
834: $concept);
835: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
836: $Apache::response::conceptgroup{'names'};
837: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
838: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
839: $name);
840: foreach my $attr (@$attrs) {
841: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
842: $Apache::response::conceptgroup{"$name.$attr"};
843: }
844: }
845: }
846: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
847: $hinthash->{"$part_id.concept.$concept"}=
848: $Apache::response::conceptgroup{'names'};
849:
850: }
851:
852: sub get_response_param {
853: my ($id,$name,$default)=@_;
854: my $parameter;
855: if ($env{'request.state'} eq 'construct' &&
856: defined($Apache::inputtags::params{$name})) {
857: $parameter=$Apache::inputtags::params{$name};
858: } else {
859: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
860: }
861: if (!defined($parameter) || $parameter eq '') {
862: $parameter = $default;
863: }
864: return $parameter;
865: }
866:
867: sub submitted {
868: my ($who)=@_;
869:
870: # when scatron grading any submission is a submission
871: if ($env{'form.submitted'} eq 'scantron') { return 1; }
872: # if the caller only cared if this was a scantron submission
873: if ($who eq 'scantron') { return 0; }
874: # if the Submit Answer button for this particular part was pressed
875: my $partid=$Apache::inputtags::part;
876: if (defined($env{'form.submit_'.$partid})) { return 1; }
877: # Submit All button on a .page was pressed
878: if (defined($env{'form.all_submit'})) { return 1; }
879: # otherwise no submission occured
880: return 0;
881: }
882:
883: sub add_to_gradingqueue {
884: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
885: if ( $courseid eq ''
886: || $symb eq ''
887: || $env{'request.state'} eq 'construct') {
888: return;
889: }
890:
891: my %queue_info = ( 'type' => 'problem',
892: 'time' => time);
893:
894: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
895: $queue_info{'slot'}=
896: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
897: }
898:
899: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
900: if ($result ne 'ok') {
901: &Apache::lonxml::error("add_to_queue said $result");
902: }
903: }
904:
905: # basically undef and 0 (both false) mean that they still have work to do
906: # and all true values mean that they can't do any more work
907: #
908: # a return of undef means it is unattempted
909: # a return of 0 means it is attmpted and wrong but still has tries
910: # a return of 1 means it is marked correct
911: # a return of 2 means they have exceed maximum number of tries
912: # a return of 3 means it after the answer date
913: sub check_status {
914: my ($id)=@_;
915: if (!$id) { $id=$Apache::linputtags::part; }
916: my $curtime=&Apache::lonnet::EXT('system.time');
917: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
918: my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
919: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
920: if ( $opendate && $curtime > $opendate &&
921: $duedate && $curtime > $duedate &&
922: $answerdate && $curtime > $answerdate) {
923: return 3;
924: }
925: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
926: if ($status =~ /^correct/) { return 1; }
927: if (!$status) { return undef; }
928: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
929: if ($maxtries eq '') { $maxtries=2; }
930: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
931: if ($curtries < $maxtries) { return 0; }
932: return 2;
933: }
934:
935: 1;
936: __END__
937:
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