# The LearningOnline Network with CAPA
# caparesponse definition
#
# $Id: caparesponse.pm,v 1.265 2024/10/30 03:12:40 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
package Apache::caparesponse;
use strict;
use capa;
use Safe::Hole;
use Apache::lonmaxima();
use Apache::lonlocal;
use Apache::lonnet;
use Apache::lonmsg();
use Apache::response();
use Storable qw(dclone);
use Apache::lonnet;
BEGIN {
&Apache::lonxml::register('Apache::caparesponse',('numericalresponse','stringresponse','formularesponse'));
}
my %answer;
my @answers;
my @alphabet=('A'..'Z');
sub get_answer { return %answer; };
sub push_answer{ push(@answers,dclone(\%answer)); undef(%answer) }
sub pop_answer { %answer = %{pop(@answers)}; };
my $cur_name;
my $tag_internal_answer_name = 'INTERNAL';
sub start_answer {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
$cur_name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
if ($cur_name =~ /^\s*$/) { $cur_name = $Apache::lonxml::curdepth; }
my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
if (!defined($type) && $tagstack->[-2] eq 'answergroup') {
$type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2);
}
if (!defined($type)) { $type = 'ordered' };
$answer{$cur_name}= { 'type' => $type,
'answers' => [] };
if ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('Name:','name',$token);
$result.=&Apache::edit::select_arg('Type:','type',
[['ordered', 'Ordered' ],
['unordered','Unordered'],],
$token);
$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag = &Apache::edit::get_new_args($token,$parstack,
$safeeval,'name',
'type');
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
$result.= &Apache::edit::handle_insert();
}
}
return $result;
}
sub end_answer {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
if ($target eq 'edit') {
$result .= &Apache::edit::tag_end();
}
undef($cur_name);
return $result;
}
sub insert_answer {
return '
<answer>
<value></value>
</answer>';
}
sub start_answergroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
if ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::select_arg('Type:','type',
[['ordered', 'Ordered' ],
['unordered','Unordered'],],
$token);
$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag = &Apache::edit::get_new_args($token,$parstack,
$safeeval,'name',
'type');
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
$result.= &Apache::edit::handle_insert();
}
}
return $result;
}
sub end_answergroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
if ($target eq 'web') {
if ( &Apache::response::show_answer() ) {
my $partid = $Apache::inputtags::part;
my $id = $Apache::inputtags::response[-1];
&set_answertext($Apache::lonhomework::history{"resource.$partid.$id.answername"},
$target,$token,$tagstack,$parstack,$parser,
$safeeval,-2);
}
} elsif ($target eq 'edit') {
$result .= &Apache::edit::tag_end();
}
return $result;
}
sub insert_answergroup {
return '
<answergroup>
<answer>
<value></value>
</answer>
</answergroup>';
}
sub start_value {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ( $target eq 'web' || $target eq 'tex' ||
$target eq 'grade' || $target eq 'webgrade' ||
$target eq 'answer' || $target eq 'analyze' ) {
my $bodytext = &Apache::lonxml::get_all_text("/value",$parser,$style);
$bodytext = &Apache::run::evaluate($bodytext,$safeeval,
$$parstack[-1]);
push(@{ $answer{$cur_name}{'answers'} },[$bodytext]);
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
my $bodytext = &Apache::lonxml::get_all_text("/value",$parser,$style);
$result.=&Apache::edit::editline($token->[1],$bodytext,undef,40).
&Apache::edit::end_row();
} elsif ($target eq 'modified') {
$result=$token->[4].&Apache::edit::modifiedfield('/value',$parser);
}
return $result;
}
sub end_value {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
if ($target eq 'edit') {
$result = &Apache::edit::end_table();
}
return $result;
}
sub insert_value {
return '
<value></value>';
}
sub start_vector {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ( $target eq 'web' || $target eq 'tex' ||
$target eq 'grade' || $target eq 'webgrade' ||
$target eq 'answer' || $target eq 'analyze' ) {
my $bodytext = &Apache::lonxml::get_all_text("/vector",$parser,$style);
my @values = &Apache::run::run($bodytext,$safeeval,$$parstack[-1]);
if (@values == 1) {
@values = split(',',$values[0]);
}
push(@{ $answer{$cur_name}{'answers'} },\@values);
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
my $bodytext = &Apache::lonxml::get_all_text("/vector",$parser,$style);
$result.=&Apache::edit::editline($token->[1],$bodytext,undef,40).
&Apache::edit::end_row();
} elsif ($target eq 'modified') {
$result=$token->[4].&Apache::edit::modifiedfield('/vector',$parser);
}
return $result;
}
sub end_vector {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
if ($target eq 'edit') {
$result = &Apache::edit::end_table();
}
return $result;
}
sub insert_vector {
return '
<value></value>';
}
sub start_array {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ( $target eq 'web' || $target eq 'tex' ||
$target eq 'grade' || $target eq 'webgrade' ||
$target eq 'answer' || $target eq 'analyze' ) {
my $bodytext = &Apache::lonxml::get_all_text("/array",$parser,$style);
my @values = &Apache::run::evaluate($bodytext,$safeeval,
$$parstack[-1]);
push(@{ $answer{$cur_name}{'answers'} },@values);
}
return $result;
}
sub end_array {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
return $result;
}
sub start_unit {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
return $result;
}
sub end_unit {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
return $result;
}
sub start_numericalresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
&Apache::lonxml::register('Apache::caparesponse',
('answer','answergroup','value','array','unit',
'vector'));
push(@Apache::lonxml::namespace,'caparesponse');
my $id = &Apache::response::start_response($parstack,$safeeval);
my $result;
undef(%answer);
undef(%{$safeeval->varglob('LONCAPA::CAPAresponse_args')});
if ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('Answer:','answer',$token);
if ($token->[1] eq 'numericalresponse') {
$result.=&Apache::edit::text_arg('Incorrect Answers:','incorrect',
$token).
&Apache::loncommon::help_open_topic('numerical_wrong_answers');
$result.=&Apache::edit::text_arg('Unit:','unit',$token,5).
&Apache::loncommon::help_open_topic('Physical_Units');
$result.=&Apache::edit::text_arg('Format:','format',$token,4).
&Apache::loncommon::help_open_topic('Numerical_Response_Format');
} elsif ($token->[1] eq 'formularesponse') {
$result.=&Apache::edit::text_arg('Sample Points:','samples',
$token,40).
&Apache::loncommon::help_open_topic('Formula_Response_Sampling');
}
$result.=&Apache::edit::text_arg('Pre-Processor Subroutine:','preprocess',
$token,10);
$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag;
if ($token->[1] eq 'numericalresponse') {
$constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'answer',
'incorrect','unit',
'format','preprocess');
} elsif ($token->[1] eq 'formularesponse') {
$constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'answer',
'samples','preprocess');
}
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
$result.=&Apache::edit::handle_insert();
}
} elsif ($target eq 'meta') {
$result=&Apache::response::meta_package_write('numericalresponse');
} elsif ($target eq 'answer' || $target eq 'grade') {
&Apache::response::reset_params();
} elsif ($target eq 'web') {
my $partid = $Apache::inputtags::part;
my $hideunit=&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffunit');
&Apache::lonxml::debug("Got unit $hideunit for $partid $id");
#no way to enter units, with radio buttons
if ((lc($hideunit) eq "yes") && ($Apache::lonhomework::type ne 'exam')) {
my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
$safeeval);
if ($unit =~ /\S/) { $result.=" (in $unit) "; }
}
if ( &Apache::response::show_answer() ) {
&set_answertext($tag_internal_answer_name,$target,$token,$tagstack,
$parstack,$parser,$safeeval,-1);
}
}
return $result;
}
sub set_answertext {
my ($name,$target,$token,$tagstack,$parstack,$parser,$safeeval,
$response_level) = @_;
my $stringify;
if (scalar(@$tagstack)) {
if ($$tagstack[-1] eq 'formularesponse') {
if (&Apache::lonxml::get_param('samples',$parstack,$safeeval)) {
$stringify = 1;
}
} elsif ($$tagstack[-1] eq 'numericalresponse') {
$stringify = 1;
}
}
&add_in_tag_answer($parstack,$safeeval,$stringify,$response_level);
if ($name eq '' || !ref($answer{$name})) {
if (ref($answer{$tag_internal_answer_name})) {
$name = $tag_internal_answer_name;
} else {
$name = (sort(keys(%answer)))[0];
}
}
return if ($name eq '' || !ref($answer{$name}));
my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,
$safeeval,$response_level);
my $unit=&Apache::lonxml::get_param_var('unit',$parstack,$safeeval,
$response_level);
&Apache::lonxml::debug("answer looks to be $name");
my @answertxt;
for (my $i=0; $i < scalar(@{$answer{$name}{'answers'}}); $i++) {
my $answertxt;
my $answer=$answer{$name}{'answers'}[$i];
foreach my $element (@$answer) {
if ( scalar(@$tagstack)
&& $tagstack->[$response_level] ne 'numericalresponse') {
$answertxt.=$element.',';
} else {
my $format;
if ($#formats > 0) {
$format=$formats[$i];
} else {
$format=$formats[0];
}
if ($unit=~/\$/) { $format="\$".$format; $unit=~s/\$//g; }
if ($unit=~/\,/) { $format="\,".$format; $unit=~s/\,//g; }
my $formatted=&format_number($element,$format,$target,
$safeeval);
$answertxt.=' '.$formatted.',';
}
}
chop($answertxt);
if ($target eq 'web') {
$answertxt.=" $unit ";
}
push(@answertxt,$answertxt)
}
my $id = $Apache::inputtags::response[-1];
$Apache::inputtags::answertxt{$id}=\@answertxt;
}
sub setup_capa_args {
my ($safeeval,$parstack,$args,$response) = @_;
my $args_ref= \%{$safeeval->varglob('LONCAPA::CAPAresponse_args')};
undef(%{ $args_ref });
foreach my $arg (@{$args}) {
$$args_ref{$arg}=
&Apache::lonxml::get_param($arg,$parstack,$safeeval);
}
foreach my $key (keys(%Apache::inputtags::params)) {
$$args_ref{$key}=$Apache::inputtags::params{$key};
}
&setup_capa_response($args_ref,$response);
return $args_ref;
}
sub setup_capa_response {
my ($args_ref,$response) = @_;
if (ref($response)) {
$$args_ref{'response'}=dclone($response);
} else {
$$args_ref{'response'}=dclone(["$response"]);
}
}
sub check_submission {
my ($response,$partid,$id,$tag,$parstack,$safeeval,$ignore_sig)=@_;
my @args = ('type','tol','sig','format','unit','calc','samples','preprocess');
my $args_ref = &setup_capa_args($safeeval,$parstack,\@args,$response);
my $stringify;
my $hideunit=
&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffunit');
#no way to enter units, with radio buttons
if ($Apache::lonhomework::type eq 'exam' ||
lc($hideunit) eq "yes") {
delete($$args_ref{'unit'});
}
#sig fig don't make much sense either
if (($Apache::lonhomework::type eq 'exam' ||
&Apache::response::submitted('scantron') ||
$ignore_sig) &&
$tag eq 'numericalresponse') {
delete($$args_ref{'sig'});
}
if ($tag eq 'formularesponse') {
if ($$args_ref{'samples'}) {
$$args_ref{'type'}='fml';
$stringify = 1;
} else {
$$args_ref{'type'}='math';
}
} elsif ($tag eq 'numericalresponse') {
$$args_ref{'type'}='float';
$stringify = 1;
} elsif ($tag eq 'stringresponse') {
if ($$args_ref{'type'} eq '') {
$$args_ref{'type'} = 'ci';
}
}
&add_in_tag_answer($parstack,$safeeval,$stringify);
if (!%answer) {
&Apache::lonxml::error("No answers are defined");
}
my (@final_awards,@final_msgs,@names);
foreach my $name (keys(%answer)) {
&Apache::lonxml::debug(" doing $name with ".join(':',@{ $answer{$name}{'answers'} }));
${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=dclone($answer{$name});
&setup_capa_response($args_ref,$response);
use Time::HiRes;
my $t0 = [Time::HiRes::gettimeofday()];
my ($result,@msgs) =
&Apache::run::run("&caparesponse_check_list()",$safeeval);
&Apache::lonxml::debug("checking $name $result with $response took ".&Time::HiRes::tv_interval($t0));
&Apache::lonxml::debug('msgs are '.join(':',@msgs));
my ($awards)=split(/:/,$result);
my @awards= split(/,/,$awards);
my ($ad, $msg) = &Apache::inputtags::finalizeawards(\@awards,\@msgs);
push(@final_awards,$ad);
push(@final_msgs,$msg);
push(@names,$name);
}
my ($ad, $msg, $name) = &Apache::inputtags::finalizeawards(\@final_awards,
\@final_msgs,
\@names,1);
&Apache::lonxml::debug(" name of picked award is $name from ".join(', ',@names));
return($ad,$msg, $name);
}
sub stringresponse_gradechange {
my ($part,$id,$previous,$caller,$response,$ad,$type) = @_;
return unless (ref($previous) eq 'HASH');
my ($prevarray,$prevaward);
my %typenames = (
cs => 'Case sensitive',
ci => 'Case insensitive',
);
if ($caller eq 'cs') {
return unless (ref($previous->{'version'}) eq 'ARRAY');
$prevarray = $previous->{'version'};
$prevaward = $previous->{'award'};
} elsif ($caller eq 'ci') {
return unless (ref($previous->{'versionci'}) eq 'ARRAY');
$prevarray = $previous->{'versionci'};
$prevaward = $previous->{'awardci'};
} else {
return;
}
my $count=0;
my %count_lookup;
foreach my $i (1..$Apache::lonhomework::history{'version'}) {
my $prefix = $i.":resource.$part";
next if (!exists($Apache::lonhomework::history{"$prefix.award"}));
$count++;
$count_lookup{$i} = $count;
}
my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
my %coursedesc = &Apache::lonnet::coursedescription($courseid);
my $cdom = $coursedesc{'domain'};
my $versions = ' (submissions: '.join(', ',map {$count_lookup{$_} } @{$prevarray}).')';
my $warning = "String Response ($typenames{$type}) grading discrepancy: award for response of $response changed from $prevaward".$versions." to $ad; user: $name:$domain in course: $courseid for part: $part response: $id for symb: $symb";
&Apache::lonnet::logthis($warning);
my $origmail = $Apache::lonnet::perlvar{'lonAdmEMail'};
my $recipients = &Apache::loncommon::build_recipient_list(undef,'errormail',
$cdom,$origmail);
if ($recipients ne '') {
&Apache::lonmsg::sendemail($recipients,'Stringresponse Grading Discrepancy',$warning);
}
return;
}
sub add_in_tag_answer {
my ($parstack,$safeeval,$stringify,$response_level) = @_;
my @answer=&Apache::lonxml::get_param_var('answer',$parstack,$safeeval,
$response_level);
&Apache::lonxml::debug('answer is'.join(':',@answer));
if (@answer && $answer[0] =~ /\S/) {
if ($stringify) {
@answer = map { $_ .= ''; } @answer;
}
$answer{$tag_internal_answer_name}= {'type' => 'ordered',
'answers' => [\@answer] };
}
}
sub capa_formula_fix {
my ($expression)=@_;
return &Apache::response::implicit_multiplication($expression);
}
sub end_numericalresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
&Apache::lonxml::deregister('Apache::caparesponse',
('answer','answergroup','value','array','unit',
'vector'));
pop(@Apache::lonxml::namespace);
my $increment=1;
my $result = '';
if (!$Apache::lonxml::default_homework_loaded) {
&Apache::lonxml::default_homework_load($safeeval);
}
my $partid = $Apache::inputtags::part;
my $id = $Apache::inputtags::response[-1];
my ($tag,$stringify);
my $safehole = new Safe::Hole;
$safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
if (scalar(@$tagstack)) { $tag=$$tagstack[-1]; }
if ( $target eq 'grade' && &Apache::response::submitted() ) {
&Apache::response::setup_params($tag,$safeeval);
if ($Apache::lonhomework::type eq 'exam' &&
(($tag eq 'formularesponse') || ($tag eq 'mathresponse'))) {
$increment=&Apache::response::scored_response($partid,$id);
} else {
my $response = &Apache::response::getresponse();
if ( $response =~ /[^\s]/) {
my %previous = &Apache::response::check_for_previous($response,$partid,$id);
&Apache::lonxml::debug("submitted a $response<br>\n");
&Apache::lonxml::debug($$parstack[-1] . "\n<br>");
if ( &Apache::response::submitted('scantron')) {
if ($tag eq 'numericalresponse') {
$stringify = 1;
} elsif ($tag eq 'formularesponse') {
if (&Apache::lonxml::get_param('samples',$parstack,$safeeval)) {
$stringify = 1;
}
}
&add_in_tag_answer($parstack,$safeeval,$stringify);
my ($values,$display)=&make_numerical_bubbles($partid,$id,$target,
$parstack,$safeeval);
$response=$values->[$response];
}
$Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
my ($ad,$msg,$name)=&check_submission($response,$partid,$id,
$tag,$parstack,
$safeeval);
&Apache::lonxml::debug('ad is'.$ad);
if ($ad eq 'SIG_FAIL') {
my ($sig_u,$sig_l)=
&get_sigrange($Apache::inputtags::params{'sig'});
$msg=join(':',$msg,$sig_l,$sig_u);
&Apache::lonxml::debug("sigs bad $sig_u $sig_l ".
$Apache::inputtags::params{'sig'});
}
&Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
if (($ad eq 'INCORRECT' || $ad eq 'APPROX_ANS' ||
$ad eq 'EXACT_ANS')) {
if ($Apache::lonhomework::type eq 'survey') {
$ad='SUBMITTED';
} elsif ($Apache::lonhomework::type eq 'surveycred') {
$ad='SUBMITTED_CREDIT';
} elsif ($Apache::lonhomework::type eq 'anonsurvey') {
$ad='ANONYMOUS';
} elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
$ad='ANONYMOUS_CREDIT';
}
}
&Apache::response::handle_previous(\%previous,$ad);
$Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad;
$Apache::lonhomework::results{"resource.$partid.$id.awardmsg"}=$msg;
$Apache::lonhomework::results{"resource.$partid.$id.answername"}=$name;
$result='';
}
}
} elsif ($target eq 'web' || $target eq 'tex') {
if ($tag eq 'numericalresponse') {
$stringify = 1;
} elsif ($tag eq 'formularesponse') {
if (&Apache::lonxml::get_param('samples',$parstack,$safeeval)) {
$stringify = 1;
}
}
&check_for_answer_errors($parstack,$safeeval,$stringify);
my $award = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"};
my $status = $Apache::inputtags::status['-1'];
if ($Apache::lonhomework::type eq 'exam') {
# FIXME support multi dimensional numerical problems
# in exam bubbles
my ($bubble_values,$bubble_display)=
&make_numerical_bubbles($partid,$id,$target,$parstack,
$safeeval);
my $number_of_bubbles = scalar(@{ $bubble_values });
my $unit=&Apache::lonxml::get_param_var('unit',$parstack,
$safeeval);
if ($target eq 'web') {
if ($tag eq 'numericalresponse') {
if ($unit=~/\S/) {$result.=' (in '.$unit.')<br /><br />';}
$result.= '<table border="1"><tr>';
my $previous=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.$id.submission"};
for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
my $checked='';
if ($previous eq $bubble_values->[$ind]) {
$checked=" checked='on' ";
}
$result.='<td><input type="radio" name="HWVAL_'.$id.
'" value="'.$bubble_values->[$ind].'" '.$checked
.' /><b>'.$alphabet[$ind].'</b>: '.
$bubble_display->[$ind].'</td>';
}
$result.='</tr></table>';
}
} elsif ($target eq 'tex') {
if ((defined $unit) and ($unit=~/\S/) and ($Apache::lonhomework::type eq 'exam')) {
$result.=' \textit{(in} \verb|'.$unit.'|\textit{)} ';
}
if ($tag eq 'numericalresponse') {
$result .= &make_horizontal_latex_bubbles($bubble_values, $bubble_display,
'$\bigcirc$');
} else {
$increment = &Apache::response::repetition();
}
}
}
&Apache::response::setup_prior_tries_hash(\&format_prior_response_numerical);
} elsif ($target eq 'edit') {
$result.='</td></tr>'.&Apache::edit::end_table;
} elsif ($target eq 'answer' || $target eq 'analyze') {
my $part_id="$partid.$id";
my $samples;
if ($target eq 'analyze') {
push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
$Apache::lonhomework::analyze{"$part_id.type"} = $tag;
my (@incorrect)=&Apache::lonxml::get_param_var('incorrect',$parstack,$safeeval);
if ($#incorrect eq 0) { @incorrect=(split(/,/,$incorrect[0])); }
push (@{ $Apache::lonhomework::analyze{"$part_id.incorrect"} }, @incorrect);
&Apache::response::check_if_computed($token,$parstack,
$safeeval,'answer');
}
if (scalar(@$tagstack)) {
&Apache::response::setup_params($tag,$safeeval);
}
if ($tag eq 'numericalresponse') {
$stringify = 1;
} elsif ($tag eq 'formularesponse') {
$samples=&Apache::lonxml::get_param('samples',$parstack,$safeeval);
if ($samples) {
$stringify = 1;
}
}
&add_in_tag_answer($parstack,$safeeval,$stringify);
my (@formats)=&Apache::lonxml::get_param_var('format',$parstack,$safeeval);
my $unit=&Apache::lonxml::get_param_var('unit',$parstack,$safeeval);
my ($needsdollar,$needscomma);
if ($unit =~ /\$/) {
$needsdollar = 1;
}
if ($unit =~ /\,/) {
$needscomma = 1;
}
if ($target eq 'answer') {
$result.=&Apache::response::answer_header($tag,undef,
scalar(keys(%answer)));
if ($tag eq 'numericalresponse'
&& $Apache::lonhomework::type eq 'exam') {
my ($bubble_values,undef,$correct) = &make_numerical_bubbles($partid,
$id,$target,$parstack,$safeeval);
$result.=&Apache::response::answer_part($tag,$correct);
}
}
foreach my $name (sort(keys(%answer))) {
my @answers = @{ $answer{$name}{'answers'} };
if ($target eq 'analyze') {
foreach my $info ('answer','ans_high','ans_low','format') {
$Apache::lonhomework::analyze{"$part_id.$info"}{$name}=[];
}
}
my ($sigline,$tolline);
if ($name ne $tag_internal_answer_name
|| scalar(keys(%answer)) > 1) {
$result.=&Apache::response::answer_part($tag,$name);
}
for(my $i=0;$i<=$#answers;$i++) {
my $ans=$answers[$i];
my $fmt=$formats[0];
if (@formats && $#formats) {$fmt=$formats[$i];}
my ($sighigh,$siglow);
if ($Apache::inputtags::params{'sig'}) {
($sighigh,$siglow)=&get_sigrange($Apache::inputtags::params{'sig'});
}
my @vector;
if (ref($ans)) {
@vector = @{ $ans };
} else {
@vector = ($ans);
}
my @all_answer_info;
foreach my $element (@vector) {
my ($high,$low);
if ($Apache::inputtags::params{'tol'}) {
($high,$low)=&get_tolrange($element,$Apache::inputtags::params{'tol'});
}
if ($target eq 'answer') {
if ($fmt && $tag eq 'numericalresponse') {
$fmt=~s/e/E/g;
if ($unit=~/\$/) { $fmt="\$".$fmt; $unit=~s/\$//g; }
if ($unit=~/\,/) { $fmt="\,".$fmt; $unit=~s/\,//g; }
$element = &format_number($element,$fmt,$target,$safeeval);
#if ($high) {
# $high=&format_number($high,$fmt,$target,$safeeval);
# $low =&format_number($low,$fmt,$target,$safeeval);
#}
}
if ($high && $tag eq 'numericalresponse') {
$element.='; ['.$low.'; '.$high.']';
$tolline .= "[$low, $high]";
}
if (defined($sighigh) && $tag eq 'numericalresponse') {
if ($env{'form.answer_output_mode'} eq 'tex') {
$element.= "; Sig $siglow - $sighigh";
} else {
$element.= " Sig <i>$siglow - $sighigh</i>";
$sigline .= "[$siglow, $sighigh]";
}
}
push(@all_answer_info,$element);
} elsif ($target eq 'analyze') {
push (@{ $Apache::lonhomework::analyze{"$part_id.answer"}{$name}[$i] }, $element);
if ($high) {
push (@{ $Apache::lonhomework::analyze{"$part_id.ans_high"}{$name}[$i] }, $high);
push (@{ $Apache::lonhomework::analyze{"$part_id.ans_low"}{$name}[$i] }, $low);
}
if ($fmt) {
push (@{ $Apache::lonhomework::analyze{"$part_id.format"}{$name}[$i] }, $fmt);
}
}
}
if ($target eq 'answer') {
$result.= &Apache::response::answer_part($tag,join('; ',@all_answer_info));
}
}
my @fmt_ans;
for(my $i=0;$i<=$#answers;$i++) {
my $ans=$answers[$i];
my $fmt=$formats[0];
if (@formats && $#formats) {$fmt=$formats[$i];}
my @answers;
if (ref($ans) eq 'ARRAY') {
@answers = (@{$ans});
}
foreach my $element (@answers) {
if ($fmt && $tag eq 'numericalresponse') {
$fmt=~s/e/E/g;
if ($unit=~/\$/) { $fmt="\$".$fmt; $unit=~s/\$//g; }
if ($unit=~/\,/) { $fmt="\,".$fmt; $unit=~s/\,//g; }
$element = &format_number($element,$fmt,$target,
$safeeval);
if ($fmt=~/\$/ && !$needsdollar) { $element=~s/\$//; }
}
}
push(@fmt_ans,join(',',@answers));
}
my $response=\@fmt_ans;
my $hideunit=&Apache::lonnet::EXT('resource.'.$partid.'_'.
$id.'.turnoffunit');
if ($unit ne '' &&
! ($Apache::lonhomework::type eq 'exam' ||
lc($hideunit) eq "yes") ) {
my $cleanunit=$unit;
$cleanunit=~s/[\$,]//g;
foreach my $ans (@fmt_ans) {
$ans.=" $cleanunit";
}
}
my ($ad,$msg)=&check_submission($response,$partid,$id,$tag,
$parstack,$safeeval);
if ($ad ne 'EXACT_ANS' && $ad ne 'APPROX_ANS') {
my $error;
if ($tag eq 'formularesponse') {
$error=&mt("Computer's answer is incorrect ([_1]).",'"'.join(', ',@$response).'"');
} else {
# answer failed check if it is sig figs that is failing
my ($ad,$msg)=&check_submission($response,$partid,$id,
$tag,$parstack,
$safeeval,1);
$error=&mt("Computer's answer is incorrect ([_1]).",'"'.join(', ',@$response).'"').' ';
if (($ad eq 'NO_UNIT') && $needsdollar) {
$error.=&mt('The unit attribute includes [_1] but the answer format does not.','$').' '.
&mt('Either remove the [_1] from the unit or prepend [_1] to the answer format.','$');
} elsif (($ad eq 'COMMA_FAIL') && $needscomma) {
$error.=&mt('The unit attribute includes [_1] but the answer format does not.',',').' '.
&mt('Either remove the [_1] from the unit or prepend [_1] to the answer format.',',');
} elsif ($ad eq 'UNIT_INVALID_STUDENT') {
$error.=&mt('Unable to interpret units. Computer reads units as "[_1]".',$msg).' '.
&mt('The unit attribute in the numericalresponse item needs to be a supported physical unit.');
} elsif ($sigline ne '') {
$error.=&mt('It is likely that the tolerance range [_1] or significant figures [_2] need to be adjusted.',$tolline,$sigline);
} else {
$error.=&mt('It is likely that the tolerance range [_1] needs to be adjusted.',$tolline);
}
}
if ($ad ne 'EXACT_ANS' && $ad ne 'APPROX_ANS') {
&Apache::lonxml::error($error);
} else {
&Apache::lonxml::warning($error);
}
}
if (defined($unit) and ($unit ne '') and
$tag eq 'numericalresponse') {
if ($target eq 'answer') {
if ($env{'form.answer_output_mode'} eq 'tex') {
$result.=&Apache::response::answer_part($tag,
" Unit: $unit ");
} else {
$result.=&Apache::response::answer_part($tag,
"Unit: <b>$unit</b>");
}
} elsif ($target eq 'analyze') {
push (@{ $Apache::lonhomework::analyze{"$part_id.unit"} }, $unit);
}
}
if ($tag eq 'formularesponse' && $target eq 'answer') {
$result.=&Apache::response::answer_part($tag,$samples);
}
$result.=&Apache::response::next_answer($tag,$name);
}
if ($target eq 'answer') {
$result.=&Apache::response::answer_footer($tag);
}
}
if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
$target eq 'tex' || $target eq 'analyze') {
if (($tag eq 'formularesponse') && ($target eq 'analyze')) {
my $type = &Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.type');
if ($type eq 'exam') {
$increment = &Apache::response::repetition();
}
}
&Apache::lonxml::increment_counter($increment,"$partid.$id");
if ($target eq 'analyze') {
&Apache::lonhomework::set_bubble_lines();
}
}
&Apache::response::end_response();
return $result;
}
sub format_prior_response_numerical {
my ($mode,$answer) = @_;
if (ref($answer)) {
my $result = '<table class="LC_prior_numerical"><tr>';
foreach my $element (@{ $answer }) {
$result.= '<td><span class="LC_prior_numerical">'.
&HTML::Entities::encode($element,'"<>&').'</span></td>';
}
$result.='</tr></table>';
return $result;
}
return '<span class="LC_prior_numerical">'.
&HTML::Entities::encode($answer,'"<>&').'</span>';
}
sub check_for_answer_errors {
my ($parstack,$safeeval,$stringify) = @_;
&add_in_tag_answer($parstack,$safeeval,$stringify);
my %counts;
foreach my $name (keys(%answer)) {
push(@{$counts{scalar(@{$answer{$name}{'answers'}})}},$name);
}
if (scalar(keys(%counts)) > 1) {
my $counts = join(' ',map {
my $count = $_;
&mt("Answers [_1] had [_2] components.",
'<tt>'.join(', ',@{$counts{$count}}).'</tt>',
$count);
} (sort(keys(%counts))));
&Apache::lonxml::error(&mt("All answers must have the same number of components. Varying numbers of answers were seen. ").$counts);
}
my $expected_number_of_inputs = (keys(%counts))[0];
if ( $expected_number_of_inputs > 0
&& $expected_number_of_inputs != scalar(@Apache::inputtags::inputlist)) {
&Apache::lonxml::error(&mt("Expected [_1] input fields, but there were only [_2] seen.",
$expected_number_of_inputs,
scalar(@Apache::inputtags::inputlist)));
}
}
sub get_table_sizes {
my ($number_of_bubbles,$rbubble_values)=@_;
my $scale=2; #mm for one digit
my $cell_width=0;
foreach my $member (@$rbubble_values) {
my $cell_width_real=0;
if ($member=~/(\+|-)?(\d*)\.?(\d*)\s*\$?\\times\s*10\^\{(\+|-)?(\d+)}\$?/) {
$cell_width_real=(length($2)+length($3)+length($5)+7)*$scale;
} elsif ($member=~/(\d*)\.?(\d*)(E|e)(\+|-)?(\d*)/) {
$cell_width_real=(length($1)+length($2)+length($5)+9)*$scale;
} elsif ($member=~/(\d*)\.(\d*)/) {
$cell_width_real=(length($1)+length($2)+3)*$scale;
} else {
$cell_width_real=(length($member)+1)*$scale*0.9;
}
if ($cell_width_real>$cell_width) {$cell_width=$cell_width_real;}
}
$cell_width+=8;
my $textwidth;
if ($env{'form.textwidth'} ne '') {
$env{'form.textwidth'}=~/(\d*)\.?(\d*)/;
$textwidth=$1.'.'.$2;
} else {
$env{'form.textwidth'}=~/(\d+)\.?(\d*)/;
$textwidth=$1.'.'.$2;
}
my $bubbles_per_line=int($textwidth/$cell_width);
if ($bubbles_per_line > $number_of_bubbles) {
$bubbles_per_line=$number_of_bubbles;
} elsif (($bubbles_per_line > $number_of_bubbles/2)
&& ($number_of_bubbles % 2==0)) {
$bubbles_per_line=$number_of_bubbles/2;
}
if ($bubbles_per_line < 1) {
$bubbles_per_line=1;
}
my $number_of_tables = int($number_of_bubbles/$bubbles_per_line);
my @table_range = ();
for (my $i=0;$i<$number_of_tables;$i++) {push @table_range,$bubbles_per_line;}
if ($number_of_bubbles % $bubbles_per_line) {
$number_of_tables++;
push @table_range,($number_of_bubbles % $bubbles_per_line);
}
$cell_width-=8;
$cell_width=$cell_width*3/4;
return ($cell_width,$number_of_tables,@table_range);
}
sub format_number {
my ($number,$format,$target,$safeeval)=@_;
my $ans;
if ($format eq '') {
#What is the number? (integer,decimal,floating point)
if ($number=~/^(\d*\.?\d*)(E|e)[+\-]?(\d*)$/) {
$format = '3e';
} elsif ($number=~/^(\d*)\.(\d*)$/) {
$format = '4f';
} elsif ($number=~/^(\d*)$/) {
$format = 'd';
}
}
if (!$Apache::lonxml::default_homework_loaded) {
&Apache::lonxml::default_homework_load($safeeval);
}
$ans=&Apache::run::run("&prettyprint(q\0$number\0,q\0$format\0,q\0$target\0)",$safeeval);
return $ans;
}
sub make_numerical_bubbles {
my ($part,$id,$target,$parstack,$safeeval) =@_;
if (!%answer) {
&Apache::lonxml::error(&mt("No answers defined for response [_1] in part [_2] to make bubbles for.",$id,$part));
return ([],[],undef);
}
my $number_of_bubbles =
&Apache::response::get_response_param($part.'_'.$id,'numbubbles',8);
#
# Fixes for BZ 6519 - number of bubbles <= 0 or non-integer.
#
$number_of_bubbles = int($number_of_bubbles + 0.5);
if ($number_of_bubbles <= 0) {
$number_of_bubbles = 8;
}
my ($format)=&Apache::lonxml::get_param_var('format',$parstack,$safeeval);
my $name = (exists($answer{$tag_internal_answer_name})
? $tag_internal_answer_name
: (sort(keys(%answer)))[0]);
if ( scalar(@{$answer{$name}{'answers'}}) > 1) {
&Apache::lonxml::error("Only answers with 1 component are supported in exam mode");
}
if (scalar(@{$answer{$name}{'answers'}[0]}) > 1) {
&Apache::lonxml::error("Vector answers are unsupported in exam mode.");
}
my $answer = $answer{$name}{'answers'}[0][0];
my (@incorrect)=&Apache::lonxml::get_param_var('incorrect',$parstack,
$safeeval);
if ($#incorrect eq 0) { @incorrect=(split(/,/,$incorrect[0])); }
my @bubble_values=();
my @alphabet=('A'..'Z');
&Apache::lonxml::debug("answer is $answer incorrect is @incorrect");
my @oldseed=&Math::Random::random_get_seed();
if (@incorrect) {
&Apache::lonxml::debug("inside ".(scalar(@incorrect)+1 gt $number_of_bubbles));
if (defined($incorrect[0]) &&
scalar(@incorrect)+1 >= $number_of_bubbles) {
&Apache::lonxml::debug("inside ".(scalar(@incorrect)+1).":$number_of_bubbles");
&Apache::response::setrandomnumber();
my @rand_inc=&Math::Random::random_permutation(@incorrect);
@bubble_values=@rand_inc[0..($number_of_bubbles-2)];
@bubble_values=sort {$a <=> $b} (@bubble_values,$answer);
&Apache::lonxml::debug("Answer was :$answer: returning :".$#bubble_values.": which are :".join(':',@bubble_values));
&Math::Random::random_set_seed(@oldseed);
my $correct;
for(my $i=0; $i<=$#bubble_values;$i++) {
if ($bubble_values[$i] eq $answer) {
$correct = $alphabet[$i];
last;
}
}
if (defined($format) && $format ne '') {
my @bubble_display;
foreach my $value (@bubble_values) {
push(@bubble_display,
&format_number($value,$format,$target,$safeeval));
}
return (\@bubble_values,\@bubble_display,$correct);
} else {
return (\@bubble_values,\@bubble_values,$correct);
}
}
if (defined($incorrect[0]) &&
scalar(@incorrect)+1 < $number_of_bubbles) {
&Apache::lonxml::warning("Not enough incorrect answers were specified in the incorrect array, ignoring the specified incorrect answers and instead generating them (".join(',',@incorrect).").");
}
}
my @factors = (1.13,1.17,1.25,1.33,1.45); #default values of factors
my @powers = (1..$number_of_bubbles);
&Apache::response::setrandomnumber();
my $ind=&Math::Random::random_uniform_integer(1,0,$#powers);
my $power = $powers[$ind];
$ind=&Math::Random::random_uniform_integer(1,0,$#factors);
my $factor = $factors[$ind];
my @bubble_display;
my $answerfactor=$answer;
if ($answer==0) {
$answerfactor=&Math::Random::random_uniform_integer(1,1,100)/
&Math::Random::random_uniform_integer(1,1,10);
}
for ($ind=0;$ind<$number_of_bubbles;$ind++) {
my $exponent = $power-$powers[$#powers-$ind];
$bubble_values[$ind] = $answerfactor*($factor**$exponent);
# If bubble is for correct answer (i.e., exponent = 0), and value
# of $answerfactor * factor**$exponent is an integer with more than
# 15 digits, assign $answerfactor itself as bubble value.
# This prevents a "use fewer digits" issue on 64bit servers
# when correct answer is >= 1e+16, and when correct bubble is A.
if ($exponent == 0) {
if ($bubble_values[$ind] =~ /^-?(\d+)$/) {
if (length($1) > 15) {
$bubble_values[$ind] = $answerfactor;
}
}
}
$bubble_display[$ind] = &format_number($bubble_values[$ind],
$format,$target,$safeeval);
}
my $correct = $alphabet[$number_of_bubbles-$power];
if ($answer==0) {
$correct='A';
$bubble_values[0]=0;
$bubble_display[0] = &format_number($bubble_values[0],
$format,$target,$safeeval);
}
&Math::Random::random_set_seed(@oldseed);
return (\@bubble_values,\@bubble_display,$correct);
}
##
# Produce LaTeX bubbles laid out horizontally given a set of bubble values:
#
# @param bubble_values - reference to an array of bubble 'values'
# @param bubble_display - reference to the array of texts to display to the user
# for each bubble_value (this is mostly for numerical response
# when the displayed value may not be an exact
# representation of the bubble value.
# @param bubble_fragment- The LaTeX fragment that will be plugged in to make
# the bubble itself. Note that the code will autonomously
# label each bubble with a lable...and that it's perfectly
# acceptable to use "" for the bubble_fragment.
#
# @return string - the LaTeX fragment that produces the bubbles.
#
sub make_horizontal_latex_bubbles {
my ($bubble_values, $bubble_display, $bubble_fragment) = @_;
my $result;
my $number_of_bubbles = scalar(@{$bubble_values});
# Get the number of rows and columns in each row of the bubble
# table:
my ($celllength, $number_of_tables, @table_range) =
&get_table_sizes($number_of_bubbles, $bubble_display);
my $j=0;
my $cou=0;
$result.='\vskip 2mm \noindent ';
if ($Apache::lonhomework::type eq 'exam') {
$result .= '\textbf{'.$Apache::lonxml::counter.'.} \vskip -3mm ';
}
for (my $i=0;$i<$number_of_tables;$i++) {
if ($i == 0) {
$result .= '\vskip -1mm ';
} else {
$result .= '\vskip 1mm ';
}
$result.='\noindent \setlength{\tabcolsep}{2 mm}\hskip 2pc\begin{tabular}{';
for (my $ind=0;$ind<$table_range[$j];$ind++) {
$result.='p{4 mm}p{'.$celllength.' mm}';
}
$result.='}';
for (my $ind=$cou;$ind<$cou+$table_range[$j];$ind++) {
$result.='\hskip -4 mm {\small \textbf{ '.$alphabet[$ind].'}}'
. $bubble_fragment
. '& \hskip -3 mm {\small '.$bubble_display->[$ind].'} ';
if ($ind != $cou+$table_range[$j]-1) {
$result.=' & ';
}
}
$cou += $table_range[$j];
$j++;
$result.='\\\\\end{tabular}\vskip 0 mm ';
}
return $result;
}
sub get_tolrange {
my ($ans,$tol)=@_;
my ($high,$low);
if ($tol =~ /%$/) {
chop($tol);
my $change=$ans*($tol/100.0);
$high=$ans+$change;
$low=$ans-$change;
} else {
$high=$ans+$tol;
$low=$ans-$tol;
}
return ($high,$low);
}
sub get_sigrange {
my ($sig)=@_;
#&Apache::lonxml::debug("Got a sig of :$sig:");
my $courseid=$env{'request.course.id'};
if ($env{'request.state'} ne 'construct'
&& lc($env{"course.$courseid.disablesigfigs"}) eq 'yes') {
return (15,0);
}
my $sig_lbound;
my $sig_ubound;
if ($sig eq '') {
$sig_lbound = 0; #SIG_LB_DEFAULT
$sig_ubound =15; #SIG_UB_DEFAULT
} else {
($sig_lbound,$sig_ubound) = split(/,/,$sig);
if (!defined($sig_lbound)) {
$sig_lbound = 0; #SIG_LB_DEFAULT
$sig_ubound =15; #SIG_UB_DEFAULT
}
if (!defined($sig_ubound)) { $sig_ubound=$sig_lbound; }
}
if (($sig_ubound<$sig_lbound) ||
($sig_lbound > 15) ||
($sig =~/(\+|-)/ ) ) {
my $errormsg=&mt("Invalid Significant figures detected")." ($sig)";
if ($env{'request.state'} eq 'construct') {
$errormsg.=
&Apache::loncommon::help_open_topic('Significant_Figures');
}
&Apache::lonxml::error($errormsg);
}
return ($sig_ubound,$sig_lbound);
}
sub format_prior_response_string {
my ($mode,$answer) =@_;
return '<span class="LC_prior_string">'.
&HTML::Entities::encode($answer,'"<>&').'</span>';
}
sub start_stringresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
my $id = &Apache::response::start_response($parstack,$safeeval);
undef(%answer);
if ($target eq 'meta') {
$result=&Apache::response::meta_package_write('stringresponse');
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('Answer:','answer',$token);
$result.=&Apache::edit::select_arg('Type:','type',
[['cs','Case Sensitive'],['ci','Case Insensitive'],
['mc','Case Insensitive, Any Order'],
['re','Regular Expression']],$token);
$result.=&Apache::edit::text_arg('String to display for answer:',
'answerdisplay',$token);
$result.=&Apache::edit::text_arg('Pre-Processor Subroutine:','preprocess',
$token,10);
$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag;
$constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'answer',
'type','answerdisplay','preprocess');
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
$result.=&Apache::edit::handle_insert();
}
} elsif ($target eq 'web') {
if ( &Apache::response::show_answer() ) {
my $answer=
&Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval);
if (!defined $answer || $answer eq '') {
$answer=
&Apache::lonxml::get_param('answer',$parstack,$safeeval);
}
$Apache::inputtags::answertxt{$id}=[$answer];
}
} elsif ($target eq 'answer' || $target eq 'grade') {
&Apache::response::reset_params();
}
return $result;
}
sub end_stringresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
my $part=$Apache::inputtags::part;
my $id=$Apache::inputtags::response[-1];
my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval);
my $answerdisplay=&Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval);
&Apache::lonxml::debug("current $answer ".$token->[2]);
if (!$Apache::lonxml::default_homework_loaded) {
&Apache::lonxml::default_homework_load($safeeval);
}
my $tag;
if (scalar(@$tagstack)) { $tag=$$tagstack[-1]; }
if ( $target eq 'grade' && &Apache::response::submitted() ) {
&Apache::response::setup_params('stringresponse',$safeeval);
$safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
if ($Apache::lonhomework::type eq 'exam' ||
&Apache::response::submitted('scantron')) {
&Apache::response::scored_response($part,$id);
} else {
my $response = &Apache::response::getresponse();
if ( $response =~ /[^\s]/) {
my %previous = &Apache::response::check_for_previous($response,
$part,$id,
undef,$type);
&Apache::lonxml::debug("submitted a $response<br>\n");
&Apache::lonxml::debug($$parstack[-1] . "\n<br>");
$Apache::lonhomework::results{"resource.$part.$id.submission"}=
$response;
my ($ad,$msg);
if ($type eq 're' ) {
# if the RE wasn't in a var it likely got munged,
# thus grab it from the var directly
# my $testans=$token->[2]->{'answer'};
# if ($testans !~ m/^\s*\$/) {
# $answer=$token->[2]->{'answer'};
# }
${$safeeval->varglob('LONCAPA::response')}=$response;
my $preprocess=&Apache::lonxml::get_param('preprocess',$parstack,$safeeval);
$preprocess=~s/^\&//;
if (defined($preprocess)) {
&Apache::run::run('$LONCAPA::response=&'.$preprocess.'($LONCAPA::response);',$safeeval);
}
$result = &Apache::run::run('if ($LONCAPA::response=~m'.$answer.') { return 1; } else { return 0; }',$safeeval);
&Apache::lonxml::debug("current $response");
&Apache::lonxml::debug("current $answer");
$ad = ($result) ? 'APPROX_ANS' : 'INCORRECT';
} else {
my @args = ('type','preprocess');
my $args_ref = &setup_capa_args($safeeval,$parstack,
\@args,$response);
if ($$args_ref{'type'} eq '') {
$$args_ref{'type'} = 'ci';
}
my $stringify = 1;
&add_in_tag_answer($parstack,$safeeval,$stringify);
my (@final_awards,@final_msgs,@names,%ansstring);
foreach my $name (keys(%answer)) {
&Apache::lonxml::debug(" doing $name with ".join(':',@{ $answer{$name}{'answers'} }));
${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=dclone($answer{$name});
my ($result, @msgs)=&Apache::run::run("&caparesponse_check_list()",$safeeval);
if ($$args_ref{'type'} =~ /^c[si]$/) {
$ansstring{$name} = pop(@msgs);
my $control_chars_removed = pop(@msgs);
my $error = pop(@msgs);
if (($error ne '') ||
($control_chars_removed)) {
my ($symb,$courseid,$sdomain,$sname) =
&Apache::lonnet::whichuser();
if ($control_chars_removed) {
my $showresponse = $response;
if ($response =~ /[\000-\037]/) {
$response =~ s/[\000-\037]//g;
}
if ($showresponse =~ /[\r\n\f]/) {
my @lines = split(/[\r\n\f]+/,$showresponse);
$showresponse = join('\\n',@lines);
}
&Apache::lonnet::logthis("Stringresponse grading: control characters stripped from submission ".$showresponse." for $sname:$sdomain in $courseid for part: $part response: $id and symb: $symb");
$Apache::lonhomework::results{"resource.$part.$id.submission"} = $response;
}
if ($error ne '') {
&Apache::lonnet::logthis("Stringresponse grading error: $error for $sname:$sdomain in $courseid for part: $part response: $id and symb: $symb");
}
}
}
&Apache::lonxml::debug('msgs are'.join(':',@msgs));
my ($awards)=split(/:/,$result);
my (@awards) = split(/,/,$awards);
($ad,$msg) =
&Apache::inputtags::finalizeawards(\@awards,\@msgs);
push(@final_awards,$ad);
push(@final_msgs,$msg);
push(@names,$name);
&Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
}
($ad, $msg, my $name) =
&Apache::inputtags::finalizeawards(\@final_awards,
\@final_msgs,
\@names,1);
if (keys(%ansstring) > 0) {
$Apache::lonhomework::results{"resource.$part.$id.answerstring"} = &Apache::lonnet::hash2str(%ansstring);
}
}
if (($ad eq 'INCORRECT' || $ad eq 'APPROX_ANS' ||
$ad eq 'EXACT_ANS')) {
if ($Apache::lonhomework::type eq 'survey') {
$ad='SUBMITTED';
} elsif ($Apache::lonhomework::type eq 'surveycred') {
$ad='SUBMITTED_CREDIT';
} elsif ($Apache::lonhomework::type eq 'anonsurvey') {
$ad='ANONYMOUS';
} elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
$ad='ANONYMOUS_CREDIT';
}
}
unless (($env{'request.state'} eq 'construct') ||
($Apache::lonhomework::type eq 'randomizetry')) {
if (($ad eq 'INCORRECT' || $ad eq 'APPROX_ANS' || $ad eq 'EXACT_ANS')) {
if ($previous{'used'}) {
if ($ad ne $previous{'award'}) {
if (($previous{'award'} eq 'INCORRECT' ||
$previous{'award'} eq 'APPROX_ANS' ||
$previous{'award'} eq 'EXACT_ANS')) {
&stringresponse_gradechange($part,$id,\%previous,
'cs',$response,$ad,$type);
}
}
} elsif ($previous{'usedci'}) {
if ($ad ne $previous{'awardci'}) {
if (($previous{'awardci'} eq 'INCORRECT' ||
$previous{'awardci'} eq 'APPROX_ANS' ||
$previous{'awardci'} eq 'EXACT_ANS')) {
&stringresponse_gradechange($part,$id,\%previous,
'ci',$response,$ad,$type);
}
}
}
}
}
&Apache::response::handle_previous(\%previous,$ad);
$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
$Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=$msg;
}
}
} elsif ($target eq 'answer' || $target eq 'analyze') {
my $stringify;
if ($type ne 're') {
$stringify = 1;
}
&add_in_tag_answer($parstack,$safeeval,$stringify);
if ($target eq 'analyze') {
push (@{ $Apache::lonhomework::analyze{"parts"} },"$part.$id");
$Apache::lonhomework::analyze{"$part.$id.type"} = 'stringresponse';
&Apache::response::check_if_computed($token,$parstack,$safeeval,
'answer');
}
&Apache::response::setup_params('stringresponse',$safeeval);
if ($target eq 'answer') {
$result.=&Apache::response::answer_header('stringresponse');
}
foreach my $name (keys(%answer)) {
my @answers = @{ $answer{$name}{'answers'} };
for (my $i=0;$i<=$#answers;$i++) {
my $answer_part = $answers[$i];
foreach my $element (@{$answer_part}) {
if ($target eq 'answer') {
$result.=&Apache::response::answer_part('stringresponse',
$element);
if ($env{'form.grade_retrieveanswers'}) {
$env{'form.grade_answers.resource.'.$part.'.'.$id} = $element;
}
} elsif ($target eq 'analyze') {
push (@{ $Apache::lonhomework::analyze{"$part.$id.answer"}{$name}[$i] },
$element);
}
}
if ($target eq 'answer' && $type eq 're') {
$result.=&Apache::response::answer_part('stringresponse',
$answerdisplay);
}
}
}
my $string='Case Insensitive';
if ($type eq 'mc') {
$string='Multiple Choice';
} elsif ($type eq 'cs') {
$string='Case Sensitive';
} elsif ($type eq 'ci') {
$string='Case Insensitive';
} elsif ($type eq 're') {
$string='Regular Expression';
}
if ($target eq 'answer') {
if ($env{'form.answer_output_mode'} eq 'tex') {
$result.=&Apache::response::answer_part('stringresponse',
"$string");
} else {
$result.=&Apache::response::answer_part('stringresponse',
"<b>$string</b>");
}
} elsif ($target eq 'analyze') {
push (@{$Apache::lonhomework::analyze{"$part.$id.str_type"}},
$type);
}
if ($target eq 'answer') {
$result.=&Apache::response::answer_footer('stringresponse');
}
} elsif ($target eq 'edit') {
$result.='</td></tr>'.&Apache::edit::end_table;
} elsif ($target eq 'web' || $target eq 'tex') {
&Apache::response::setup_prior_tries_hash(\&format_prior_response_string);
}
if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
$target eq 'tex' || $target eq 'analyze') {
my $repetition = &Apache::response::repetition();
&Apache::lonxml::increment_counter($repetition,"$part.$id");
if ($target eq 'analyze') {
&Apache::lonhomework::set_bubble_lines();
}
}
&Apache::response::end_response;
return $result;
}
sub start_formularesponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'meta') {
&Apache::response::start_response($parstack,$safeeval);
$result=&Apache::response::meta_package_write('formularesponse');
&Apache::response::end_response();
} else {
$result.=&start_numericalresponse(@_);
}
return $result;
}
sub end_formularesponse {
return end_numericalresponse(@_);
}
1;
__END__
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