1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.156 2006/12/15 22:11:43 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: package Apache::response;
30: use strict;
31: use Apache::lonlocal;
32: use Apache::lonnet;
33: use Apache::lonmaxima();
34:
35: BEGIN {
36: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
37: }
38:
39: sub start_response {
40: my ($parstack,$safeeval)=@_;
41: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
42: if ($#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 $id = &Apache::lonxml::get_id($parstack,$safeeval);
73: push (@Apache::inputtags::hint,$id);
74: push (@Apache::inputtags::hintlist,$id);
75: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
76: return $id;
77: }
78:
79: sub end_hintresponse {
80: pop @Apache::inputtags::hint;
81: if (defined($Apache::inputtags::paramstack[-1])) {
82: %Apache::inputtags::params=
83: @{ pop(@Apache::inputtags::paramstack) };
84: }
85: return '';
86: }
87:
88: my @randomseeds;
89: sub pushrandomnumber {
90: my $rand_alg=&Apache::lonnet::get_rand_alg();
91: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
92: $rand_alg eq '64bit2') {
93: # do nothing
94: } else {
95: my @seed=&Math::Random::random_get_seed();
96: push(@randomseeds,\@seed);
97: }
98: &Apache::response::setrandomnumber(@_);
99: }
100: sub poprandomnumber {
101: my $rand_alg=&Apache::lonnet::get_rand_alg();
102: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
103: $rand_alg eq '64bit2') {
104: return;
105: }
106: my $seed=pop(@randomseeds);
107: if ($seed) {
108: &Math::Random::random_set_seed(@$seed);
109: } else {
110: &Apache::lonxml::error("Unable to restore random algorithm.");
111: }
112: }
113:
114: sub setrandomnumber {
115: my ($ignore_id2) = @_;
116: my $rndseed;
117: $rndseed=&Apache::structuretags::setup_rndseed();
118: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
119: &Apache::lonxml::debug("randseed $rndseed");
120: # $rndseed=unpack("%32i",$rndseed);
121: my $rand_alg=&Apache::lonnet::get_rand_alg();
122: my ($rndmod,$rndmod2);
123:
124: my ($id1,$id2,$shift_amt);
125: if ($Apache::lonhomework::parsing_a_problem) {
126: $id1=$Apache::inputtags::part;
127: if (defined($Apache::inputtags::response[-1])) {
128: $id2=$Apache::inputtags::response[-1];
129: }
130: $shift_amt=scalar(@Apache::inputtags::responselist);
131: } elsif ($Apache::lonhomework::parsing_a_task) {
132: $id1=&Apache::bridgetask::get_dim_id();
133: if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
134: $id2=$Apache::bridgetask::instance{$id1}[-1];
135: $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
136: } else {
137: $shift_amt=0;
138: }
139: }
140: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
141: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
142: $rand_alg eq '64bit2') {
143: $rndmod=(&Apache::lonnet::numval($id1) << 10);
144: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
145: } elsif ($rand_alg eq '64bit3') {
146: $rndmod=(&Apache::lonnet::numval2($id1) << 10);
147: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
148: } elsif ($rand_alg eq '64bit4') {
149: my $shift=(4*$shift_amt)%30;
150: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
151: if (defined($id2)) {
152: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
153: }
154: } else {
155: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
156: }
157:
158: if ($rndseed =~/([,:])/) {
159: my $char=$1;
160: use integer;
161: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
162: $num1+=$rndmod;
163: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
164: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
165: $rndseed=$num1.$char.$num2;
166: } else {
167: $rndseed+=$rndmod;
168: if($Apache::lonnet::_64bit) {
169: use integer;
170: $rndseed=(($rndseed<<32)>>32);
171: }
172: }
173: &Apache::lonxml::debug("randseed $rndmod $rndseed");
174: &Apache::lonnet::setup_random_from_rndseed($rndseed);
175: return '';
176: }
177:
178: sub meta_parameter_write {
179: my ($name,$type,$default,$display)=@_;
180: my $partref=$Apache::inputtags::part;
181: my $result='<parameter part="'.$Apache::inputtags::part.'"';
182: if (defined($Apache::inputtags::response[-1])) {
183: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
184: $partref.='_'.$Apache::inputtags::response[-1];
185: }
186: $result.= ' name="'.$name.'"'.
187: ' type="'.$type.'"'.
188: (defined($default)?' default="'.$default.'"':'').
189: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
190: .'></parameter>'
191: ."\n";
192: return $result;
193: }
194:
195: sub meta_package_write {
196: my $name=shift;
197: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
198: if(defined($Apache::inputtags::response[-1])) {
199: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
200: }
201: $result.=' package="'.$name.'"></parameter>'."\n";
202: return $result;
203: }
204:
205: sub meta_stores_write {
206: my ($name,$type,$display)=@_;
207: my $partref=$Apache::inputtags::part;
208: my $result = '<stores part="'.$Apache::inputtags::part.'"';
209: if (defined($Apache::inputtags::response[-1])) {
210: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
211: $partref.='_'.$Apache::inputtags::response[-1];
212: }
213: $result.= ' name="'.$name.'"'.
214: ' type="'.$type.'"'.
215: ' display="'.$display.' [Part: '.$partref.']"'.
216: "></stores>\n";
217: }
218:
219: sub mandatory_part_meta {
220: #
221: # Autogenerate metadata for mandatory
222: # input (from RAT or lonparmset) and
223: # output (to lonspreadsheet)
224: # of each part
225: #
226: return
227: # &meta_parameter_write('opendate','date_start','',
228: # 'Opening Date').
229: # &meta_parameter_write('duedate','date_end','',
230: # 'Due Date').
231: # &meta_parameter_write('answerdate','date_start','',
232: # 'Show Answer Date').
233: # &meta_parameter_write('weight','int_zeropos','',
234: # 'Available Points').
235: # &meta_parameter_write('maxtries','int_pos','',
236: # 'Maximum Number of Tries').
237: &meta_package_write('part').
238: &meta_stores_write('solved','string',
239: 'Problem Status').
240: &meta_stores_write('tries','int_zeropos',
241: 'Number of Attempts').
242: &meta_stores_write('awarded','float',
243: 'Partial Credit Factor');
244: #
245: # Note: responseid-specific data 'submission' and 'awarddetail'
246: # not available to spreadsheet -> skip here
247: #
248: }
249:
250: sub meta_part_order {
251: if (@Apache::inputtags::partlist) {
252: my @parts=@Apache::inputtags::partlist;
253: shift(@parts);
254: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
255: } else {
256: return '<partorder>0</partorder>'."\n";
257: }
258: }
259:
260: sub meta_response_order {
261: if (@Apache::inputtags::responselist) {
262: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
263: '</responseorder>'."\n";
264: }
265: }
266:
267: sub check_for_previous {
268: my ($curresponse,$partid,$id) = @_;
269: my %previous;
270: $previous{'used'} = 0;
271: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
272: if ($key =~ /resource\.$partid\.$id\.submission$/) {
273: &Apache::lonxml::debug("Trying $key");
274: my $pastresponse=$Apache::lonhomework::history{$key};
275: if ($pastresponse eq $curresponse) {
276: $previous{'used'} = 1;
277: my $history;
278: if ( $key =~ /^(\d+):/ ) {
279: $history=$1;
280: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
281: $previous{'last'}='0';
282: push(@{ $previous{'version'} },$history);
283: } else {
284: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
285: $previous{'last'}='1';
286: }
287: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
288: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
289: }
290: }
291: }
292: &Apache::lonhomework::showhash(%previous);
293: return %previous;
294: }
295:
296: sub handle_previous {
297: my ($previous,$ad)=@_;
298: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
299: if ($$previous{'last'}) {
300: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
301: push(@Apache::inputtags::previous_version,$$previous{'version'});
302: } elsif ($Apache::lonhomework::type ne 'survey') {
303: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
304: push(@Apache::inputtags::previous_version,$$previous{'version'});
305: }
306: }
307: }
308:
309: sub view_or_modify {
310: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
311: my $myself=0;
312: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
313: $myself=1;
314: }
315: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
316: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
317: if ($mgr) { return "M"; }
318: if ($vgr) { return "V"; }
319: if ($myself) { return "V"; }
320: return '';
321: }
322:
323: sub start_dataresponse {
324: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
325: my $id = &Apache::response::start_response($parstack,$safeeval);
326: my $result;
327: if ($target eq 'web') {
328: $result = $token->[2]->{'display'}.':';
329: } elsif ($target eq 'meta') {
330: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
331: $token->[2]->{'type'},
332: $token->[2]->{'display'});
333: $result .= &Apache::response::meta_package_write('dataresponse');
334: }
335: return $result;
336: }
337:
338: sub end_dataresponse {
339: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
340: my $result;
341: if ( $target eq 'web' ) {
342: } elsif ($target eq 'grade' ) {
343: if ( defined $env{'form.submitted'}) {
344: my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
345: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
346: if ($allowed) {
347: &Apache::response::setup_params('dataresponse',$safeeval);
348: my $partid = $Apache::inputtags::part;
349: my $id = $Apache::inputtags::response['-1'];
350: my $response = $env{'form.HWVAL_'.$id};
351: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
352: if ( $response =~ /[^\s]/) {
353: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
354: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
355: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
356: }
357: } else {
358: $result='Not Permitted to change values.'
359: }
360: }
361: }
362: &Apache::response::end_response;
363: return $result;
364: }
365:
366: sub start_customresponse {
367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
368: my $id = &Apache::response::start_response($parstack,$safeeval);
369: push(@Apache::lonxml::namespace,'customresponse');
370: my $result;
371: undef($Apache::response::custom_answer);
372: &Apache::lonxml::register('Apache::response',('answer'));
373: if ($target eq 'web') {
374: if ( &Apache::response::show_answer() ) {
375: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
376: $safeeval);
377: $Apache::inputtags::answertxt{$id}=[$answer];
378: }
379: } elsif ($target eq 'edit') {
380: $result.=&Apache::edit::tag_start($target,$token);
381: $result.=&Apache::edit::text_arg('String to display for answer:',
382: 'answerdisplay',$token);
383: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
384: } elsif ($target eq 'modified') {
385: my $constructtag;
386: $constructtag=&Apache::edit::get_new_args($token,$parstack,
387: $safeeval,'answerdisplay');
388: if ($constructtag) {
389: $result = &Apache::edit::rebuild_tag($token);
390: $result.=&Apache::edit::handle_insert();
391: }
392: } elsif ($target eq 'answer' || $target eq 'grade') {
393: &Apache::response::reset_params();
394: } elsif ($target eq 'meta') {
395: $result .= &Apache::response::meta_package_write('customresponse');
396: }
397: return $result;
398: }
399:
400: sub end_customresponse {
401: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
402: my $result;
403: my $part=$Apache::inputtags::part;
404: my $id=$Apache::inputtags::response[-1];
405: if ( $target eq 'grade' && &Apache::response::submitted() ) {
406: my $response = &Apache::response::getresponse();
407: if ($Apache::lonhomework::type eq 'exam' ||
408: &Apache::response::submitted('scantron')) {
409: &Apache::response::scored_response($part,$id);
410: } elsif ( $response =~ /[^\s]/ &&
411: $Apache::response::custom_answer_type eq 'loncapa/perl') {
412: if (!$Apache::lonxml::default_homework_loaded) {
413: &Apache::lonxml::default_homework_load($safeeval);
414: }
415: my %previous = &Apache::response::check_for_previous($response,
416: $part,$id);
417: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
418: $response;
419: my $error;
420: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
421: $response;
422:
423: my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer.'}',$safeeval);
424: if (!&Apache::inputtags::valid_award($award)) {
425: $error = $award;
426: $award = 'ERROR';
427: }
428: &Apache::response::handle_previous(\%previous,$award);
429: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
430: $award;
431: if ($error) {
432: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
433: $error;
434: }
435: }
436: } elsif ( $target eq 'answer') {
437: $result = &Apache::response::answer_header('customresponse');
438: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
439: $safeeval);
440: if ($env{'form.answer_output_mode'} ne 'tex') {
441: $answer = '<b>'.$answer.'</b>';
442: }
443: $result .= &Apache::response::answer_part('customresponse',$answer);
444: $result .= &Apache::response::answer_footer('customresponse');
445: }
446: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
447: $target eq 'tex' || $target eq 'analyze') {
448: &Apache::lonxml::increment_counter(&Apache::response::repetition());
449: }
450: pop(@Apache::lonxml::namespace);
451: &Apache::lonxml::deregister('Apache::response',('answer'));
452: &Apache::response::end_response();
453: return $result;
454: }
455:
456:
457: sub start_mathresponse {
458: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
459: my $id = &Apache::response::start_response($parstack,$safeeval);
460: push(@Apache::lonxml::namespace,'mathresponse');
461: my $result;
462: undef($Apache::response::custom_answer);
463: &Apache::lonxml::register('Apache::response',('answer'));
464: if ($target eq 'web') {
465: if ( &Apache::response::show_answer() ) {
466: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
467: $safeeval);
468: $Apache::inputtags::answertxt{$id}=[$answer];
469: }
470: } elsif ($target eq 'edit') {
471: $result.=&Apache::edit::tag_start($target,$token);
472: $result.=&Apache::edit::text_arg('String to display for answer:',
473: 'answerdisplay',$token);
474: $result.=&Apache::edit::select_arg('Algebra System:',
475: 'cas',
476: ['maxima'],
477: $token);
478: $result.=&Apache::edit::text_arg('Argument Array:',
479: 'args',$token);
480: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
481: } elsif ($target eq 'modified') {
482: my $constructtag;
483: $constructtag=&Apache::edit::get_new_args($token,$parstack,
484: $safeeval,'answerdisplay','cas','args');
485: if ($constructtag) {
486: $result = &Apache::edit::rebuild_tag($token);
487: $result.=&Apache::edit::handle_insert();
488: }
489: } elsif ($target eq 'answer' || $target eq 'grade') {
490: &Apache::response::reset_params();
491: } elsif ($target eq 'meta') {
492: $result .= &Apache::response::meta_package_write('mathresponse');
493: }
494: return $result;
495: }
496:
497: sub end_mathresponse {
498: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
499: my $result;
500: my $part=$Apache::inputtags::part;
501: my $id=$Apache::inputtags::response[-1];
502: if ( $target eq 'grade' && &Apache::response::submitted() ) {
503: my $response = &Apache::response::getresponse();
504: if ( $response =~ /[^\s]/ ) {
505: if (!$Apache::lonxml::default_homework_loaded) {
506: &Apache::lonxml::default_homework_load($safeeval);
507: }
508: my %previous = &Apache::response::check_for_previous($response,
509: $part,$id);
510: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
511: $response;
512: my $error;
513: my $award;
514: my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
515: if ($cas eq 'maxima') {
516: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
517: $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer,$response,$args);
518: }
519: if (!&Apache::inputtags::valid_award($award)) {
520: $error = $award;
521: $award = 'ERROR';
522: }
523: &Apache::response::handle_previous(\%previous,$award);
524: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
525: $award;
526: if ($error) {
527: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
528: $error;
529: }
530: }
531: }
532: pop(@Apache::lonxml::namespace);
533: &Apache::lonxml::deregister('Apache::response',('answer'));
534: &Apache::response::end_response();
535: return $result;
536: }
537:
538: sub implicit_multiplication {
539: my ($expression)=@_;
540: # Escape scientific notation, so 3e8 does not become 3*e*8
541: # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
542: $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
543: # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
544: $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
545: # Fill in multiplication signs
546: # a b -> a*b;3 b -> 3*b;3 4 -> 3*4
547: $expression=~s/(\w)\s+(\w)/$1\*$2/gs;
548: # )( -> )*(; ) ( -> )*(
549: $expression=~s/\)\s*\(/\)\*\(/gs;
550: # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
551: $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
552: # a ( -> a*(
553: $expression=~s/(\w)\s+\(/$1\*\(/gs;
554: # )a -> )*a; )3 -> )*3; ) 3 -> )*3
555: $expression=~s/\)\s*(\w)/\)\*$1/gs;
556: # 3&8 -> 3e8; 3&-4 -> 3e-4
557: $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
558: return $expression;
559: }
560:
561: sub start_answer {
562: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
563: my $result;
564: $Apache::response::custom_answer=
565: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser);
566: $Apache::response::custom_answer_type=
567: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval));
568: $Apache::response::custom_answer_type =~ s/\s+//g;
569: if ($target eq "edit" ) {
570: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
571: $result.=&Apache::edit::editfield($token->[1],
572: $Apache::response::custom_answer,
573: '',80,4);
574: } elsif ( $target eq "modified" ) {
575: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
576: }
577: return $result;
578: }
579:
580: sub end_answer {
581: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
582: if ($target eq 'edit' ) {
583: return &Apache::edit::end_table();
584: }
585: }
586:
587: sub decide_package {
588: my ($tagstack)=@_;
589: my $package;
590: if ($$tagstack[-1] eq 'parameter') {
591: $package='part';
592: } else {
593: my $i=-1;
594: while (defined($$tagstack[$i])) {
595: if ($$tagstack[$i] =~ /(response|hint)$/) {
596: $package=$$tagstack[$i];
597: last;
598: }
599: $i--;
600: }
601: }
602: return $package;
603: }
604:
605: sub start_responseparam {
606: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
607: my $result='';
608: if ($target eq 'meta') {
609: $result = &meta_parameter_write($token->[2]->{'name'},
610: $token->[2]->{'type'},
611: $token->[2]->{'default'},
612: $token->[2]->{'description'});
613: } elsif ($target eq 'edit') {
614: $result.=&Apache::edit::tag_start($target,$token);
615: my $optionlist;
616: my $package=&decide_package($tagstack);
617: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
618: if ($key =~ /^\Q$package\E&(.*)&display$/) {
619: $optionlist.='<option value="'.$1.'">'.
620: $Apache::lonnet::packagetab{$key}.'</option>';
621: }
622: }
623: if (defined($optionlist)) {
624: $result.='Use template: <select name="'.
625: &Apache::edit::html_element_name('parameter_package').'">'.
626: '<option value=""></option>'.$optionlist.'</select><br />';
627: }
628: $result.=&Apache::edit::text_arg('Name:','name',$token).
629: &Apache::edit::text_arg('Type:','type',$token).
630: &Apache::edit::text_arg('Description:','description',$token).
631: &Apache::edit::text_arg('Default:','default',$token).
632: "</td></tr>";
633: $result.=&Apache::edit::end_table;
634: } elsif ($target eq 'modified') {
635: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
636: $safeeval,'name','type',
637: 'description','default');
638: my $element=&Apache::edit::html_element_name('parameter_package');
639: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
640: my $name=$env{"form.$element"};
641: my $tag=&decide_package($tagstack);
642: $token->[2]->{'name'}=$name;
643: $token->[2]->{'type'}=
644: $Apache::lonnet::packagetab{"$tag&$name&type"};
645: $token->[2]->{'description'}=
646: $Apache::lonnet::packagetab{"$tag&$name&display"};
647: $token->[2]->{'default'}=
648: $Apache::lonnet::packagetab{"$tag&$name&default"};
649: $constructtag=1;
650: }
651: if ($constructtag) {
652: $result = &Apache::edit::rebuild_tag($token);
653: $result.=&Apache::edit::handle_insert();
654: }
655: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
656: $target eq 'tex' || $target eq 'analyze' ) {
657: if ($env{'request.state'} eq 'construct') {
658: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
659: my $default=&Apache::lonxml::get_param('default',$parstack,
660: $safeeval);
661: if ($name) {$Apache::inputtags::params{$name}=$default;}
662: }
663: }
664: return $result;
665: }
666:
667: sub end_responseparam {
668: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
669: if ($target eq 'edit') { return ('','no'); }
670: return '';
671: }
672:
673: sub start_parameter {
674: return &start_responseparam(@_);
675: }
676:
677: sub end_parameter {
678: return &end_responseparam(@_);
679: }
680:
681: sub reset_params {
682: %Apache::inputtags::params=();
683: }
684:
685: sub setup_params {
686: my ($tag,$safeeval) = @_;
687:
688: if ($env{'request.state'} eq 'construct') { return; }
689: my %paramlist=();
690: foreach my $key (keys(%Apache::lonnet::packagetab)) {
691: if ($key =~ /^$tag/) {
692: my ($package,$name) = split(/&/,$key);
693: $paramlist{$name}=1;
694: }
695: }
696: foreach my $key (keys(%paramlist)) {
697: my $entry= 'resource.'.$Apache::inputtags::part;
698: if (defined($Apache::inputtags::response[-1])) {
699: $entry.='_'.$Apache::inputtags::response[-1];
700: }
701: $entry.='.'.$key;
702: &Apache::lonxml::debug("looking for $entry");
703: my $value = &Apache::lonnet::EXT("$entry");
704: &Apache::lonxml::debug("$key has value :$value:");
705: if ($value eq 'con_lost' || $value =~ /^error:/) {
706: &Apache::lonxml::debug("using nothing");
707: $Apache::inputtags::params{$key}='';
708: } else {
709: my $string="{return qq\0".$value."\0}";
710: my $newvalue=&Apache::run::run($string,$safeeval,1);
711: if (defined($newvalue)) { $value=$newvalue; }
712: $Apache::inputtags::params{$key}=$value;
713: }
714: }
715: }
716:
717: {
718: my @answer_bits;
719: my $need_row_start;
720:
721: sub answer_header {
722: my ($type,$increment,$rows) = @_;
723: my $result;
724: if ($env{'form.answer_output_mode'} eq 'tex') {
725: undef(@answer_bits);
726: my $bit;
727: if ($Apache::lonhomework::type eq 'exam') {
728: $bit = ($Apache::lonxml::counter+$increment).') ';
729: } else {
730: $bit .= ' Answer for Part: \verb|'.
731: $Apache::inputtags::part.'| ';
732: }
733: push(@answer_bits,$bit);
734: } else {
735: my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
736: $result = '<table border="1"><tr>';
737: if ($Apache::lonhomework::type eq 'exam') {
738: $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
739: } else {
740: $result .= $td.&mt('Answer for Part: [_1]',
741: $Apache::inputtags::part).'</td>';
742: }
743: $result .= "\n";
744: $need_row_start = 0;
745: }
746: return $result;
747: }
748:
749: sub next_answer {
750: my ($type) = @_;
751: my $result;
752: if ($env{'form.answer_output_mode'} eq 'tex') {
753: # FIXME ... need to do something with tex mode
754: } else {
755: $result .= "</tr>";
756: $need_row_start = 1;
757: }
758: return $result;
759: }
760:
761: sub answer_part {
762: my ($type,$answer,$args) = @_;
763: my $result;
764: if ($env{'form.answer_output_mode'} eq 'tex') {
765: if (!$args->{'no_verbatim'}) {
766: my $to_use='|';
767: foreach my $value (32..126) {
768: my $char=pack('c',$value);
769: if ($answer !~ /\Q$char\E/) {
770: $to_use=$char;
771: last;
772: }
773: }
774: if ($answer ne '') {
775: $answer = '\verb'.$to_use.$answer.$to_use;
776: }
777: }
778: if ($answer ne '') {
779: push(@answer_bits,$answer);
780: }
781: } else {
782: if ($need_row_start) {
783: $result .= '<tr>';
784: $need_row_start = 0;
785: }
786: $result .= '<td>'.$answer.'</td>';
787: }
788: return $result;
789: }
790:
791: sub answer_footer {
792: my ($type) = @_;
793: my $result;
794: if ($env{'form.answer_output_mode'} eq 'tex') {
795: my $columns = scalar(@answer_bits);
796: $result = ' \vskip 0 mm \noindent \begin{tabular}{|'.'c|'x$columns.'}\hline ';
797: $result .= join(' & ',@answer_bits);
798: $result .= ' \\\\ \\hline \end{tabular} \vskip 0 mm ';
799: } else {
800: $result = '</tr></table>';
801: }
802: return $result;
803: }
804:
805: }
806:
807: sub showallfoils {
808: if (defined($env{'form.showallfoils'})) {
809: my ($symb)=&Apache::lonnet::whichuser();
810: if (($env{'request.state'} eq 'construct') ||
811: ($env{'user.adv'} && $symb eq '') ||
812: ($Apache::lonhomework::viewgrades) ) {
813: return 1;
814: }
815: }
816: if ($Apache::lonhomework::type eq 'survey') { return 1; }
817: return 0;
818: }
819:
820: sub getresponse {
821: my ($temp,$resulttype)=@_;
822: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
823: my $response;
824: if (!defined($temp)) {
825: $temp=1;
826: } else {
827: $formparm.=":$temp";
828: }
829: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
830: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
831: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
832: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
833: if ($env{'form.submitted'} eq 'scantron') {
834: my $part = $Apache::inputtags::part;
835: my $id = $Apache::inputtags::response[-1];
836: $response = $env{'scantron.'.($Apache::lonxml::counter+$temp-1).
837: '.answer'};
838: # save bubbled letter for later
839: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
840: $response;
841: if ($resulttype ne 'letter') {
842: if ($resulttype eq 'A is 1') {
843: $response = $let_to_num{$response}+1;
844: } else {
845: $response = $let_to_num{$response};
846: }
847: }
848: } else {
849: $response = $env{$formparm};
850: }
851: return $response;
852: }
853:
854: sub repetition {
855: my $id = $Apache::inputtags::part;
856: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
857: if (!defined($weight) || ($weight eq '')) { $weight=1; }
858: my $repetition = int($weight/10);
859: if ($weight % 10 != 0) { $repetition++; }
860: return $repetition;
861: }
862:
863: sub scored_response {
864: my ($part,$id)=@_;
865: my $repetition=&repetition();
866: my $score=0;
867: for (my $i=0;$i<$repetition;$i++) {
868: # A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
869: my $increase=&Apache::response::getresponse($i+1);
870: if ($increase ne '') { $score+=$increase+1; }
871: }
872: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
873: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
874: my $pcr=$score/$weight;
875: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
876: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
877: 'ASSIGNED_SCORE';
878: return $repetition;
879: }
880:
881: sub whichorder {
882: my ($max,$randomize,$showall,$hash)=@_;
883: #&Apache::lonxml::debug("man $max randomize $randomize");
884: if (!defined(@{ $$hash{'names'} })) { return; }
885: my @names = @{ $$hash{'names'} };
886: my @whichopt =();
887: my (%top,@toplist,%bottom,@bottomlist);
888: if (!($showall || ($randomize eq 'no'))) {
889: my $current=0;
890: foreach my $name (@names) {
891: $current++;
892: if ($$hash{"$name.location"} eq 'top') {
893: $top{$name}=$current;
894: } elsif ($$hash{"$name.location"} eq 'bottom') {
895: $bottom{$name}=$current;
896: }
897: }
898: }
899: my $topcount=0;
900: my $bottomcount=0;
901: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
902: && ($#names > -1)) {
903: #&Apache::lonxml::debug("Have $#whichopt max is $max");
904: my $aopt;
905: if ($showall || ($randomize eq 'no')) {
906: $aopt=0;
907: } else {
908: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
909: }
910: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
911: $aopt=splice(@names,$aopt,1);
912: #&Apache::lonxml::debug("Picked $aopt");
913: if ($top{$aopt}) {
914: $toplist[$top{$aopt}]=$aopt;
915: $topcount++;
916: } elsif ($bottom{$aopt}) {
917: $bottomlist[$bottom{$aopt}]=$aopt;
918: $bottomcount++;
919: } else {
920: push (@whichopt,$aopt);
921: }
922: }
923: for (my $i=0;$i<=$#toplist;$i++) {
924: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
925: }
926: for (my $i=0;$i<=$#bottomlist;$i++) {
927: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
928: }
929: return @whichopt;
930: }
931:
932: sub show_answer {
933: my $part = $Apache::inputtags::part;
934: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
935: my $status = $Apache::inputtags::status[-1];
936: return ( ($award =~ /^correct/
937: && lc($Apache::lonhomework::problemstatus) ne 'no')
938: || $status eq "SHOW_ANSWER");
939: }
940:
941: sub analyze_store_foilgroup {
942: my ($shown,$attrs)=@_;
943: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
944: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
945: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
946: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
947: foreach my $attr (@$attrs) {
948: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
949: $Apache::response::foilgroup{"$name.".$attr};
950: }
951: }
952: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
953: }
954:
955: sub check_if_computed {
956: my ($token,$parstack,$safeeval,$name)=@_;
957: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
958: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
959: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
960: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
961: }
962: }
963:
964: sub pick_foil_for_concept {
965: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
966: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
967: my @names = @{ $Apache::response::conceptgroup{'names'} };
968: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
969: my $name=$names[$pick];
970: push @{ $Apache::response::foilgroup{'names'} }, $name;
971: foreach my $attr (@$attrs) {
972: $Apache::response::foilgroup{"$name.".$attr} =
973: $Apache::response::conceptgroup{"$name.".$attr};
974: }
975: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
976: $Apache::response::foilgroup{"$name.concept"} = $concept;
977: &Apache::lonxml::debug("Selecting $name in $concept");
978: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
979: if ($target eq 'analyze') {
980: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
981: $concept);
982: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
983: $Apache::response::conceptgroup{'names'};
984: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
985: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
986: $name);
987: foreach my $attr (@$attrs) {
988: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
989: $Apache::response::conceptgroup{"$name.$attr"};
990: }
991: }
992: }
993: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
994: $hinthash->{"$part_id.concept.$concept"}=
995: $Apache::response::conceptgroup{'names'};
996:
997: }
998:
999: sub get_response_param {
1000: my ($id,$name,$default)=@_;
1001: my $parameter;
1002: if ($env{'request.state'} eq 'construct' &&
1003: defined($Apache::inputtags::params{$name})) {
1004: $parameter=$Apache::inputtags::params{$name};
1005: } else {
1006: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
1007: }
1008: if (!defined($parameter) || $parameter eq '') {
1009: $parameter = $default;
1010: }
1011: return $parameter;
1012: }
1013:
1014: sub submitted {
1015: my ($who)=@_;
1016:
1017: # when scatron grading any submission is a submission
1018: if ($env{'form.submitted'} eq 'scantron') { return 1; }
1019: # if the caller only cared if this was a scantron submission
1020: if ($who eq 'scantron') { return 0; }
1021: # if the Submit Answer button for this particular part was pressed
1022: my $partid=$Apache::inputtags::part;
1023: if (defined($env{'form.submit_'.$partid})) { return 1; }
1024: # Submit All button on a .page was pressed
1025: if (defined($env{'form.all_submit'})) { return 1; }
1026: # otherwise no submission occured
1027: return 0;
1028: }
1029:
1030: sub add_to_gradingqueue {
1031: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1032: if ( $courseid eq ''
1033: || $symb eq ''
1034: || $env{'request.state'} eq 'construct'
1035: || $Apache::lonhomework::type ne 'problem') {
1036: return;
1037: }
1038:
1039: my %queue_info = ( 'type' => 'problem',
1040: 'time' => time);
1041:
1042: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
1043: $queue_info{'slot'}=
1044: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
1045: }
1046:
1047: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
1048: if ($result ne 'ok') {
1049: &Apache::lonxml::error("add_to_queue said $result");
1050: }
1051: }
1052:
1053: # basically undef and 0 (both false) mean that they still have work to do
1054: # and all true values mean that they can't do any more work
1055: #
1056: # a return of undef means it is unattempted
1057: # a return of 0 means it is attmpted and wrong but still has tries
1058: # a return of 1 means it is marked correct
1059: # a return of 2 means they have exceed maximum number of tries
1060: # a return of 3 means it after the answer date
1061: sub check_status {
1062: my ($id)=@_;
1063: if (!defined($id)) { $id=$Apache::inputtags::part; }
1064: my $curtime=&Apache::lonnet::EXT('system.time');
1065: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
1066: my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
1067: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
1068: if ( $opendate && $curtime > $opendate &&
1069: $duedate && $curtime > $duedate &&
1070: $answerdate && $curtime > $answerdate) {
1071: return 3;
1072: }
1073: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1074: if ($status =~ /^correct/) { return 1; }
1075: if (!$status) { return undef; }
1076: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
1077: if ($maxtries eq '') { $maxtries=2; }
1078: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
1079: if ($curtries < $maxtries) { return 0; }
1080: return 2;
1081: }
1082:
1083: 1;
1084: __END__
1085:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to response.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / homework