, this is not a valid problem, errors in grading may occur."),'<>&"').'
');
+ }
+ if ($Apache::inputtags::part eq '0') {
+ $Apache::inputtags::response_with_no_part=1;
+ }
+ return $id;
+}
+
+sub end_response {
+ #pop @Apache::inputtags::response;
+ @Apache::inputtags::inputlist=();
+ return '';
+}
+
+sub start_hintresponse {
+ my ($parstack,$safeeval)=@_;
+ my $id = &Apache::lonxml::get_id($parstack,$safeeval);
+ push (@Apache::inputtags::hint,$id);
+ push (@Apache::inputtags::hintlist,$id);
+ push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
+ return $id;
+}
+
+sub end_hintresponse {
+ pop @Apache::inputtags::hint;
+ if (defined($Apache::inputtags::paramstack[-1])) {
+ %Apache::inputtags::params=
+ @{ pop(@Apache::inputtags::paramstack) };
+ }
+ return '';
+}
+
+my @randomseeds;
+sub pushrandomnumber {
+ my $rand_alg=&Apache::lonnet::get_rand_alg();
+ if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
+ $rand_alg eq '64bit2') {
+ # do nothing
+ } else {
+ my @seed=&Math::Random::random_get_seed();
+ push(@randomseeds,\@seed);
+ }
+ &Apache::response::setrandomnumber(@_);
+}
+sub poprandomnumber {
+ my $rand_alg=&Apache::lonnet::get_rand_alg();
+ if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
+ $rand_alg eq '64bit2') {
+ return;
+ }
+ my $seed=pop(@randomseeds);
+ if ($seed) {
+ &Math::Random::random_set_seed(@$seed);
+ } else {
+ &Apache::lonxml::error("Unable to restore random algorithm.");
+ }
+}
+
+sub setrandomnumber {
+ my ($ignore_id2) = @_;
+ my $rndseed;
+ $rndseed=&Apache::structuretags::setup_rndseed();
+ if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
+ &Apache::lonxml::debug("randseed $rndseed");
+ # $rndseed=unpack("%32i",$rndseed);
+ my $rand_alg=&Apache::lonnet::get_rand_alg();
+ my ($rndmod,$rndmod2);
+
+ my ($id1,$id2,$shift_amt);
+ if ($Apache::lonhomework::parsing_a_problem) {
+ $id1=$Apache::inputtags::part;
+ if (defined($Apache::inputtags::response[-1])) {
+ $id2=$Apache::inputtags::response[-1];
+ }
+ $shift_amt=scalar(@Apache::inputtags::responselist);
+ } elsif ($Apache::lonhomework::parsing_a_task) {
+ $id1=&Apache::bridgetask::get_dim_id();
+ if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
+ $id2=$Apache::bridgetask::instance{$id1}[-1];
+ $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
+ } else {
+ $shift_amt=0;
+ }
+ }
+ &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
+ if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
+ $rand_alg eq '64bit2') {
+ $rndmod=(&Apache::lonnet::numval($id1) << 10);
+ if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
+ } elsif ($rand_alg eq '64bit3') {
+ $rndmod=(&Apache::lonnet::numval2($id1) << 10);
+ if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
+ } elsif ($rand_alg eq '64bit4') {
+ my $shift=(4*$shift_amt)%30;
+ $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
+ if (defined($id2)) {
+ $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
+ }
+ } else {
+ ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
+ }
+
+ if ($rndseed =~/([,:])/) {
+ my $char=$1;
+ use integer;
+ my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
+ $num1+=$rndmod;
+ $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
+ if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
+ $rndseed=$num1.$char.$num2;
+ } else {
+ $rndseed+=$rndmod;
+ if($Apache::lonnet::_64bit) {
+ use integer;
+ $rndseed=(($rndseed<<32)>>32);
+ }
+ }
+ &Apache::lonxml::debug("randseed $rndmod $rndseed");
+ &Apache::lonnet::setup_random_from_rndseed($rndseed);
+ return '';
+}
+
+sub meta_parameter_write {
+ my ($name,$type,$default,$display)=@_;
+ my $partref=$Apache::inputtags::part;
+ my $result=''
+ ."\n";
+ return $result;
+}
+
+sub meta_package_write {
+ my $name=shift;
+ my $result = ''."\n";
+ return $result;
+}
+
+sub meta_stores_write {
+ my ($name,$type,$display)=@_;
+ my $partref=$Apache::inputtags::part;
+ my $result = '\n";
+}
+
+sub mandatory_part_meta {
+#
+# Autogenerate metadata for mandatory
+# input (from RAT or lonparmset) and
+# output (to lonspreadsheet)
+# of each part
+#
+ return
+# &meta_parameter_write('opendate','date_start','',
+# 'Opening Date').
+# &meta_parameter_write('duedate','date_end','',
+# 'Due Date').
+# &meta_parameter_write('answerdate','date_start','',
+# 'Show Answer Date').
+# &meta_parameter_write('weight','int_zeropos','',
+# 'Available Points').
+# &meta_parameter_write('maxtries','int_pos','',
+# 'Maximum Number of Tries').
+ &meta_package_write('part').
+ &meta_stores_write('solved','string',
+ 'Problem Status').
+ &meta_stores_write('tries','int_zeropos',
+ 'Number of Attempts').
+ &meta_stores_write('awarded','float',
+ 'Partial Credit Factor');
+#
+# Note: responseid-specific data 'submission' and 'awarddetail'
+# not available to spreadsheet -> skip here
+#
+}
+
+sub meta_part_order {
+ if (@Apache::inputtags::partlist) {
+ my @parts=@Apache::inputtags::partlist;
+ shift(@parts);
+ return ''.join(',',@parts).''."\n";
+ } else {
+ return '0'."\n";
+ }
+}
+
+sub meta_response_order {
+ if (@Apache::inputtags::responselist) {
+ return ''.join(',',@Apache::inputtags::responselist).
+ ''."\n";
+ }
+}
+
+sub check_for_previous {
+ my ($curresponse,$partid,$id,$last) = @_;
+ my %previous;
+ $previous{'used'} = 0;
+ foreach my $key (sort(keys(%Apache::lonhomework::history))) {
+ if ($key =~ /resource\.$partid\.$id\.submission$/) {
+ if ( $last && $key =~ /^(\d+):/ ) {
+ next if ($1 >= $last);
+ }
+ &Apache::lonxml::debug("Trying $key");
+ my $pastresponse=$Apache::lonhomework::history{$key};
+ if ($pastresponse eq $curresponse) {
+ $previous{'used'} = 1;
+ my $history;
+ if ( $key =~ /^(\d+):/ ) {
+ $history=$1;
+ $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
+ $previous{'last'}='0';
+ push(@{ $previous{'version'} },$history);
+ } else {
+ $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
+ $previous{'last'}='1';
+ }
+ if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
+ &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
+ }
+ }
+ }
+ &Apache::lonhomework::showhash(%previous);
+ return %previous;
+}
+
+sub handle_previous {
+ my ($previous,$ad)=@_;
+ if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
+ if ($$previous{'last'}) {
+ push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
+ push(@Apache::inputtags::previous_version,$$previous{'version'});
+ } elsif ($Apache::lonhomework::type ne 'survey') {
+ push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
+ push(@Apache::inputtags::previous_version,$$previous{'version'});
+ }
+ }
+}
+
+sub view_or_modify {
+ my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
+ my $myself=0;
+ if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
+ $myself=1;
+ }
+ my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
+ my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
+ if ($mgr) { return "M"; }
+ if ($vgr) { return "V"; }
+ if ($myself) { return "V"; }
+ return '';
+}
+
+sub start_dataresponse {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $id = &Apache::response::start_response($parstack,$safeeval);
+ my $result;
+ if ($target eq 'web') {
+ $result = $token->[2]->{'display'}.':';
+ } elsif ($target eq 'meta') {
+ $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
+ $token->[2]->{'type'},
+ $token->[2]->{'display'});
+ $result .= &Apache::response::meta_package_write('dataresponse');
+ }
+ return $result;
+}
+
+sub end_dataresponse {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $result;
+ if ( $target eq 'web' ) {
+ } elsif ($target eq 'grade' ) {
+ if ( defined $env{'form.submitted'}) {
+ my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
+ my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
+ if ($allowed) {
+ &Apache::response::setup_params('dataresponse',$safeeval);
+ my $partid = $Apache::inputtags::part;
+ my $id = $Apache::inputtags::response['-1'];
+ my $response = $env{'form.HWVAL_'.$id};
+ my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
+ if ( $response =~ /[^\s]/) {
+ $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
+ $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
+ $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
+ }
+ } else {
+ $result='Not Permitted to change values.'
+ }
+ }
+ }
+ &Apache::response::end_response;
+ return $result;
+}
+
+sub start_customresponse {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $id = &Apache::response::start_response($parstack,$safeeval);
+ push(@Apache::lonxml::namespace,'customresponse');
+ my $result;
+ @Apache::response::custom_answer=();
+ @Apache::response::custom_answer_type=();
+ &Apache::lonxml::register('Apache::response',('answer'));
+ if ($target eq 'web') {
+ if ( &Apache::response::show_answer() ) {
+ my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
+ $safeeval);
+ $Apache::inputtags::answertxt{$id}=[$answer];
+ }
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_start($target,$token);
+ $result.=&Apache::edit::text_arg('String to display for answer:',
+ 'answerdisplay',$token);
+ $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
+ } elsif ($target eq 'modified') {
+ my $constructtag;
+ $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'answerdisplay');
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::handle_insert();
+ }
+ } elsif ($target eq 'answer' || $target eq 'grade') {
+ &Apache::response::reset_params();
+ } elsif ($target eq 'meta') {
+ $result .= &Apache::response::meta_package_write('customresponse');
+ }
+ return $result;
+}
+
+sub end_customresponse {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $result;
+ my $part=$Apache::inputtags::part;
+ my $id=$Apache::inputtags::response[-1];
+ if ( $target eq 'grade' && &Apache::response::submitted() ) {
+ my $response = &Apache::response::getresponse();
+ if ($Apache::lonhomework::type eq 'exam' ||
+ &Apache::response::submitted('scantron')) {
+ &Apache::response::scored_response($part,$id);
+ } elsif ( $response =~ /[^\s]/ &&
+ $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
+ if (!$Apache::lonxml::default_homework_loaded) {
+ &Apache::lonxml::default_homework_load($safeeval);
+ }
+ my %previous = &Apache::response::check_for_previous($response,
+ $part,$id);
+ $Apache::lonhomework::results{"resource.$part.$id.submission"}=
+ $response;
+ my $error;
+ ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
+ $response;
+
+ my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
+ if (!&Apache::inputtags::valid_award($award)) {
+ $error = $award;
+ $award = 'ERROR';
+ }
+ &Apache::response::handle_previous(\%previous,$award);
+ $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
+ $award;
+ if ($error) {
+ $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
+ $error;
+ }
+ }
+ } elsif ( $target eq 'answer') {
+ $result = &Apache::response::answer_header('customresponse');
+ my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
+ $safeeval);
+ if ($env{'form.answer_output_mode'} ne 'tex') {
+ $answer = ''.$answer.'';
+ }
+ $result .= &Apache::response::answer_part('customresponse',$answer);
+ $result .= &Apache::response::answer_footer('customresponse');
+ }
+ if ($target eq 'web') {
+ &setup_prior_tries_hash(\&format_prior_response_math);
+ }
+ if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
+ $target eq 'tex' || $target eq 'analyze') {
+ &Apache::lonxml::increment_counter(&Apache::response::repetition());
+ }
+ pop(@Apache::lonxml::namespace);
+ pop(@Apache::response::custom_answer);
+ pop(@Apache::response::custom_answer_type);
+ &Apache::lonxml::deregister('Apache::response',('answer'));
+ &Apache::response::end_response();
+ return $result;
+}
+
+sub format_prior_response_custom {
+ my ($mode,$answer) =@_;
+ return ''.
+ &HTML::Entities::encode($answer,'"<>&').'';
+}
+
+sub start_mathresponse {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $id = &Apache::response::start_response($parstack,$safeeval);
+ push(@Apache::lonxml::namespace,'mathresponse');
+ my $result;
+ @Apache::response::custom_answer=();
+ @Apache::response::custom_answer_type=();
+ &Apache::lonxml::register('Apache::response',('answer'));
+ if ($target eq 'web') {
+ if ( &Apache::response::show_answer() ) {
+ my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
+ $safeeval);
+ $Apache::inputtags::answertxt{$id}=[$answer];
+ }
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_start($target,$token);
+ $result.=&Apache::edit::text_arg('String to display for answer:',
+ 'answerdisplay',$token);
+ $result.=&Apache::edit::select_arg('Algebra System:',
+ 'cas',
+ ['maxima'],
+ $token);
+ $result.=&Apache::edit::text_arg('Argument Array:',
+ 'args',$token);
+ $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
+ } elsif ($target eq 'modified') {
+ my $constructtag;
+ $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'answerdisplay','cas','args');
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::handle_insert();
+ }
+ } elsif ($target eq 'answer' || $target eq 'grade') {
+ &Apache::response::reset_params();
+ } elsif ($target eq 'meta') {
+ $result .= &Apache::response::meta_package_write('mathresponse');
+ }
+ return $result;
+}
+
+sub end_mathresponse {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $result;
+ my $part=$Apache::inputtags::part;
+ my $id=$Apache::inputtags::response[-1];
+ if ( $target eq 'grade' && &Apache::response::submitted() ) {
+ my $response = &Apache::response::getresponse();
+ if ( $response =~ /[^\s]/ ) {
+ if (!$Apache::lonxml::default_homework_loaded) {
+ &Apache::lonxml::default_homework_load($safeeval);
+ }
+ my %previous = &Apache::response::check_for_previous($response,
+ $part,$id);
+ $Apache::lonhomework::results{"resource.$part.$id.submission"}=
+ $response;
+ my $error;
+ my $award;
+ my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
+ if ($cas eq 'maxima') {
+ my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
+ $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args);
+ }
+ if (!&Apache::inputtags::valid_award($award)) {
+ $error = $award;
+ $award = 'ERROR';
+ }
+ &Apache::response::handle_previous(\%previous,$award);
+ $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
+ $award;
+ if ($error) {
+ $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
+ $error;
+ }
+ }
+ }
+ if ($target eq 'web') {
+ &setup_prior_tries_hash(\&format_prior_response_math);
+ }
+
+ pop(@Apache::lonxml::namespace);
+ pop(@Apache::response::custom_answer);
+ pop(@Apache::response::custom_answer_type);
+ &Apache::lonxml::deregister('Apache::response',('answer'));
+ &Apache::response::end_response();
+ return $result;
+}
+
+sub format_prior_response_math {
+ my ($mode,$answer) =@_;
+ return ''.
+ &HTML::Entities::encode($answer,'"<>&').'';
+}
+
+sub implicit_multiplication {
+ my ($expression)=@_;
+# Escape scientific notation, so 3e8 does not become 3*e*8
+# 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
+ $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
+# 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
+ $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
+# Fill in multiplication signs
+# a b -> a*b;3 b -> 3*b;3 4 -> 3*4
+ $expression=~s/(\w)\s+(\w)/$1\*$2/gs;
+# )( -> )*(; ) ( -> )*(
+ $expression=~s/\)\s*\(/\)\*\(/gs;
+# 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
+ $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
+# a ( -> a*(
+ $expression=~s/(\w)\s+\(/$1\*\(/gs;
+# )a -> )*a; )3 -> )*3; ) 3 -> )*3
+ $expression=~s/\)\s*(\w)/\)\*$1/gs;
+# 3&8 -> 3e8; 3&-4 -> 3e-4
+ $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
+ return $expression;
+}
+
+sub start_answer {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $result;
+ push(@Apache::response::custom_answer,
+ &Apache::lonxml::get_all_text_unbalanced("/answer",$parser));
+ push(@Apache::response::custom_answer_type,
+ lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)));
+ $Apache::response::custom_answer_type[-1] =~ s/\s+//g;
+ if ($target eq "edit" ) {
+ $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
+ $result.=&Apache::edit::editfield($token->[1],
+ $Apache::response::custom_answer[-1],
+ '',80,4);
+ } elsif ( $target eq "modified" ) {
+ $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
+ }
+ return $result;
+}
+
+sub end_answer {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ if ($target eq 'edit' ) {
+ return &Apache::edit::end_table();
+ }
+}
+
+sub decide_package {
+ my ($tagstack)=@_;
+ my $package;
+ if ($$tagstack[-1] eq 'parameter') {
+ $package='part';
+ } else {
+ my $i=-1;
+ while (defined($$tagstack[$i])) {
+ if ($$tagstack[$i] =~ /(response|hint)$/) {
+ $package=$$tagstack[$i];
+ last;
+ }
+ $i--;
+ }
+ }
+ return $package;
}
sub start_responseparam {
- my ($target,$token,$parstack,$parser,$safeeval)=@_;
- my $args='';
- if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
- my $default = &Apache::run::run("{$args;".'return $default}',$safeeval);
- my $name = &Apache::run::run("{$args;".'return $name}',$safeeval);
- &Apache::lonxml::debug("looking for resource.$Apache::inputtags::part['-1'].$name");
- my $value = &Apache::lonnet::EXT("resource.$Apache::inputtags::part['-1'].$name");
- &Apache::lonxml::debug("$name has value :$value: and default :$default:");
- if (!$value) {
- $Apache::inputtags::params{$name}=$default;
- } else {
- $Apache::inputtags::params{$name}=$value;
- }
- return '';
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ my $result='';
+ if ($target eq 'meta') {
+ $result = &meta_parameter_write($token->[2]->{'name'},
+ $token->[2]->{'type'},
+ $token->[2]->{'default'},
+ $token->[2]->{'description'});
+ } elsif ($target eq 'edit') {
+ $result.=&Apache::edit::tag_start($target,$token);
+ my $optionlist;
+ my $package=&decide_package($tagstack);
+ foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
+ if ($key =~ /^\Q$package\E&(.*)&display$/) {
+ $optionlist.='';
+ }
+ }
+ if (defined($optionlist)) {
+ $result.='Use template:
';
+ }
+ $result.=&Apache::edit::text_arg('Name:','name',$token).
+ &Apache::edit::text_arg('Type:','type',$token).
+ &Apache::edit::text_arg('Description:','description',$token).
+ &Apache::edit::text_arg('Default:','default',$token).
+ "";
+ $result.=&Apache::edit::end_table;
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'name','type',
+ 'description','default');
+ my $element=&Apache::edit::html_element_name('parameter_package');
+ if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
+ my $name=$env{"form.$element"};
+ my $tag=&decide_package($tagstack);
+ $token->[2]->{'name'}=$name;
+ $token->[2]->{'type'}=
+ $Apache::lonnet::packagetab{"$tag&$name&type"};
+ $token->[2]->{'description'}=
+ $Apache::lonnet::packagetab{"$tag&$name&display"};
+ $token->[2]->{'default'}=
+ $Apache::lonnet::packagetab{"$tag&$name&default"};
+ $constructtag=1;
+ }
+ if ($constructtag) {
+ $result = &Apache::edit::rebuild_tag($token);
+ $result.=&Apache::edit::handle_insert();
+ }
+ } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
+ $target eq 'tex' || $target eq 'analyze' ) {
+ if ($env{'request.state'} eq 'construct') {
+ my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
+ my $default=&Apache::lonxml::get_param('default',$parstack,
+ $safeeval);
+ if ($name) {$Apache::inputtags::params{$name}=$default;}
+ }
+ }
+ return $result;
}
sub end_responseparam {
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+ if ($target eq 'edit') { return ('','no'); }
+ return '';
+}
+
+sub start_parameter {
+ return &start_responseparam(@_);
+}
+
+sub end_parameter {
+ return &end_responseparam(@_);
+}
+
+sub reset_params {
+ %Apache::inputtags::params=();
+}
+
+sub setup_params {
+ my ($tag,$safeeval) = @_;
+
+ if ($env{'request.state'} eq 'construct') { return; }
+ my %paramlist=();
+ foreach my $key (keys(%Apache::lonnet::packagetab)) {
+ if ($key =~ /^\Q$tag\E/) {
+ my ($package,$name) = split(/&/,$key);
+ $paramlist{$name}=1;
+ }
+ }
+ foreach my $key (keys(%paramlist)) {
+ my $entry= 'resource.'.$Apache::inputtags::part;
+ if (defined($Apache::inputtags::response[-1])) {
+ $entry.='_'.$Apache::inputtags::response[-1];
+ }
+ $entry.='.'.$key;
+ &Apache::lonxml::debug("looking for $entry");
+ my $value = &Apache::lonnet::EXT("$entry");
+ &Apache::lonxml::debug("$key has value :$value:");
+ if ($value eq 'con_lost' || $value =~ /^error:/) {
+ &Apache::lonxml::debug("using nothing");
+ $Apache::inputtags::params{$key}='';
+ } else {
+ my $string="{return qq\0".$value."\0}";
+ my $newvalue=&Apache::run::run($string,$safeeval,1);
+ if (defined($newvalue)) { $value=$newvalue; }
+ $Apache::inputtags::params{$key}=$value;
+ }
+ }
+}
+
+{
+ my @answer_bits;
+ my $need_row_start;
+
+sub answer_header {
+ my ($type,$increment,$rows) = @_;
+ my $result;
+ if ($env{'form.answer_output_mode'} eq 'tex') {
+ undef(@answer_bits);
+ my $bit;
+ if ($Apache::lonhomework::type eq 'exam') {
+ $bit = ($Apache::lonxml::counter+$increment).') ';
+ } else {
+ $bit .= ' Answer for Part: \verb|'.
+ $Apache::inputtags::part.'| ';
+ }
+ push(@answer_bits,$bit);
+ } else {
+ my $td = '';
+ $result = '';
+ if ($Apache::lonhomework::type eq 'exam') {
+ $result .= $td.($Apache::lonxml::counter+$increment). ')';
+ } else {
+ $result .= $td.&mt('Answer for Part: [_1]',
+ $Apache::inputtags::part).'';
+ }
+ $result .= "\n";
+ $need_row_start = 0;
+ }
+ return $result;
+}
+
+sub next_answer {
+ my ($type) = @_;
+ my $result;
+ if ($env{'form.answer_output_mode'} eq 'tex') {
+ # FIXME ... need to do something with tex mode
+ } else {
+ $result .= " ";
+ $need_row_start = 1;
+ }
+ return $result;
+}
+
+sub answer_part {
+ my ($type,$answer,$args) = @_;
+ my $result;
+ if ($env{'form.answer_output_mode'} eq 'tex') {
+ if (!$args->{'no_verbatim'}) {
+ my $to_use='|';
+ foreach my $value (32..126) {
+ my $char=pack('c',$value);
+ if ($answer !~ /\Q$char\E/) {
+ $to_use=$char;
+ last;
+ }
+ }
+ if ($answer ne '') {
+ $answer = '\verb'.$to_use.$answer.$to_use;
+ }
+ }
+ if ($answer ne '') {
+ push(@answer_bits,$answer);
+ }
+ } else {
+ if ($need_row_start) {
+ $result .= '';
+ $need_row_start = 0;
+ }
+ $result .= '| '.$answer.' | ';
+ }
+ return $result;
+}
+
+sub answer_footer {
+ my ($type) = @_;
+ my $result;
+ if ($env{'form.answer_output_mode'} eq 'tex') {
+ my $columns = scalar(@answer_bits);
+ $result = ' \vskip 0 mm \noindent \begin{tabular}{|'.'c|'x$columns.'}\hline ';
+ $result .= join(' & ',@answer_bits);
+ $result .= ' \\\\ \\hline \end{tabular} \vskip 0 mm ';
+ } else {
+ $result = '
';
+ }
+ return $result;
+}
+
+}
+
+sub showallfoils {
+ if (defined($env{'form.showallfoils'})) {
+ my ($symb)=&Apache::lonnet::whichuser();
+ if (($env{'request.state'} eq 'construct') ||
+ ($env{'user.adv'} && $symb eq '') ||
+ ($Apache::lonhomework::viewgrades) ) {
+ return 1;
+ }
+ }
+ if ($Apache::lonhomework::type eq 'survey') { return 1; }
+ return 0;
+}
+
+sub getresponse {
+ my ($temp,$resulttype)=@_;
+ my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
+ my $response;
+ if (!defined($temp)) {
+ $temp=1;
+ } else {
+ $formparm.=":$temp";
+ }
+ my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
+ 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
+ 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
+ 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
+ if ($env{'form.submitted'} eq 'scantron') {
+ my $part = $Apache::inputtags::part;
+ my $id = $Apache::inputtags::response[-1];
+ $response = $env{'scantron.'.($Apache::lonxml::counter+$temp-1).
+ '.answer'};
+ # save bubbled letter for later
+ $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
+ $response;
+ if ($resulttype ne 'letter') {
+ if ($resulttype eq 'A is 1') {
+ $response = $let_to_num{$response}+1;
+ } else {
+ $response = $let_to_num{$response};
+ }
+ }
+ } else {
+ $response = $env{$formparm};
+ }
+ return $response;
+}
+
+sub repetition {
+ my $id = $Apache::inputtags::part;
+ my $weight = &Apache::lonnet::EXT("resource.$id.weight");
+ if (!defined($weight) || ($weight eq '')) { $weight=1; }
+ my $repetition = int($weight/10);
+ if ($weight % 10 != 0) { $repetition++; }
+ return $repetition;
+}
+
+sub scored_response {
+ my ($part,$id)=@_;
+ my $repetition=&repetition();
+ my $score=0;
+ for (my $i=0;$i<$repetition;$i++) {
+ # A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
+ my $increase=&Apache::response::getresponse($i+1);
+ if ($increase ne '') { $score+=$increase+1; }
+ }
+ my $weight = &Apache::lonnet::EXT("resource.$part.weight");
+ if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
+ my $pcr=$score/$weight;
+ $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
+ $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
+ 'ASSIGNED_SCORE';
+ return $repetition;
+}
+
+sub whichorder {
+ my ($max,$randomize,$showall,$hash)=@_;
+ #&Apache::lonxml::debug("man $max randomize $randomize");
+ if (!defined(@{ $$hash{'names'} })) { return; }
+ my @names = @{ $$hash{'names'} };
+ my @whichopt =();
+ my (%top,@toplist,%bottom,@bottomlist);
+ if (!($showall || ($randomize eq 'no'))) {
+ my $current=0;
+ foreach my $name (@names) {
+ $current++;
+ if ($$hash{"$name.location"} eq 'top') {
+ $top{$name}=$current;
+ } elsif ($$hash{"$name.location"} eq 'bottom') {
+ $bottom{$name}=$current;
+ }
+ }
+ }
+ my $topcount=0;
+ my $bottomcount=0;
+ while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
+ && ($#names > -1)) {
+ #&Apache::lonxml::debug("Have $#whichopt max is $max");
+ my $aopt;
+ if ($showall || ($randomize eq 'no')) {
+ $aopt=0;
+ } else {
+ $aopt=int(&Math::Random::random_uniform() * ($#names+1));
+ }
+ #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
+ $aopt=splice(@names,$aopt,1);
+ #&Apache::lonxml::debug("Picked $aopt");
+ if ($top{$aopt}) {
+ $toplist[$top{$aopt}]=$aopt;
+ $topcount++;
+ } elsif ($bottom{$aopt}) {
+ $bottomlist[$bottom{$aopt}]=$aopt;
+ $bottomcount++;
+ } else {
+ push (@whichopt,$aopt);
+ }
+ }
+ for (my $i=0;$i<=$#toplist;$i++) {
+ if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
+ }
+ for (my $i=0;$i<=$#bottomlist;$i++) {
+ if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
+ }
+ return @whichopt;
+}
+
+sub show_answer {
+ my $part = $Apache::inputtags::part;
+ my $award = $Apache::lonhomework::history{"resource.$part.solved"};
+ my $status = $Apache::inputtags::status[-1];
+ return ( ($award =~ /^correct/
+ && lc($Apache::lonhomework::problemstatus) ne 'no')
+ || $status eq "SHOW_ANSWER");
+}
+
+sub analyze_store_foilgroup {
+ my ($shown,$attrs)=@_;
+ my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
+ foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
+ if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
+ push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
+ foreach my $attr (@$attrs) {
+ $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
+ $Apache::response::foilgroup{"$name.".$attr};
+ }
+ }
+ push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
+}
+
+sub check_if_computed {
+ my ($token,$parstack,$safeeval,$name)=@_;
+ my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
+ if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
+ my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
+ $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
+ }
+}
+
+sub pick_foil_for_concept {
+ my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
+ if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
+ my @names = @{ $Apache::response::conceptgroup{'names'} };
+ my $pick=int(&Math::Random::random_uniform() * ($#names+1));
+ my $name=$names[$pick];
+ push @{ $Apache::response::foilgroup{'names'} }, $name;
+ foreach my $attr (@$attrs) {
+ $Apache::response::foilgroup{"$name.".$attr} =
+ $Apache::response::conceptgroup{"$name.".$attr};
+ }
+ my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
+ $Apache::response::foilgroup{"$name.concept"} = $concept;
+ &Apache::lonxml::debug("Selecting $name in $concept");
+ my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
+ if ($target eq 'analyze') {
+ push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
+ $concept);
+ $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
+ $Apache::response::conceptgroup{'names'};
+ foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
+ push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
+ $name);
+ foreach my $attr (@$attrs) {
+ $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
+ $Apache::response::conceptgroup{"$name.$attr"};
+ }
+ }
+ }
+ push(@{ $hinthash->{"$part_id.concepts"} },$concept);
+ $hinthash->{"$part_id.concept.$concept"}=
+ $Apache::response::conceptgroup{'names'};
+
+}
+
+sub get_response_param {
+ my ($id,$name,$default)=@_;
+ my $parameter;
+ if ($env{'request.state'} eq 'construct' &&
+ defined($Apache::inputtags::params{$name})) {
+ $parameter=$Apache::inputtags::params{$name};
+ } else {
+ $parameter=&Apache::lonnet::EXT("resource.$id.$name");
+ }
+ if (!defined($parameter) || $parameter eq '') {
+ $parameter = $default;
+ }
+ return $parameter;
+}
+
+sub submitted {
+ my ($who)=@_;
+
+ # when scatron grading any submission is a submission
+ if ($env{'form.submitted'} eq 'scantron') { return 1; }
+ # if the caller only cared if this was a scantron submission
+ if ($who eq 'scantron') { return 0; }
+ # if the Submit Answer button for this particular part was pressed
+ my $partid=$Apache::inputtags::part;
+ if ($env{'form.submitted'} eq "part_$partid") {
+ return 1;
+ }
+ if ($env{'form.submitted'} eq "yes"
+ && defined($env{'form.submit_'.$partid})) {
+ return 1;
+ }
+ # Submit All button on a .page was pressed
+ if (defined($env{'form.all_submit'})) { return 1; }
+ # otherwise no submission occured
+ return 0;
+}
+
+sub add_to_gradingqueue {
+ my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
+ if ( $courseid eq ''
+ || $symb eq ''
+ || $env{'request.state'} eq 'construct'
+ || $Apache::lonhomework::type ne 'problem') {
+ return;
+ }
+
+ my %queue_info = ( 'type' => 'problem',
+ 'time' => time);
+
+ if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
+ $queue_info{'slot'}=
+ $Apache::lonhomework::history{"resource.0.checkedin.slot"};
+ }
+
+ my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
+ if ($result ne 'ok') {
+ &Apache::lonxml::error("add_to_queue said $result");
+ }
+}
+
+# basically undef and 0 (both false) mean that they still have work to do
+# and all true values mean that they can't do any more work
+#
+# a return of undef means it is unattempted
+# a return of 0 means it is attmpted and wrong but still has tries
+# a return of 1 means it is marked correct
+# a return of 2 means they have exceed maximum number of tries
+# a return of 3 means it after the answer date
+sub check_status {
+ my ($id)=@_;
+ if (!defined($id)) { $id=$Apache::inputtags::part; }
+ my $curtime=&Apache::lonnet::EXT('system.time');
+ my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
+ my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
+ my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
+ if ( $opendate && $curtime > $opendate &&
+ $duedate && $curtime > $duedate &&
+ $answerdate && $curtime > $answerdate) {
+ return 3;
+ }
+ my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
+ if ($status =~ /^correct/) { return 1; }
+ if (!$status) { return undef; }
+ my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
+ if ($maxtries eq '') { $maxtries=2; }
+ my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
+ if ($curtries < $maxtries) { return 0; }
+ return 2;
+}
+
+sub setup_prior_tries_hash {
+ my ($func,$data) = @_;
+ my $part = $Apache::inputtags::part;
+ my $id = $Apache::inputtags::response[-1];
+ foreach my $i (1..$Apache::lonhomework::history{'version'}) {
+ my $sub_key = "$i:resource.$part.$id.submission";
+ next if (!exists($Apache::lonhomework::history{$sub_key}));
+ my @other_data;
+ foreach my $datum (@{ $data }) {
+ if (ref($datum)) {
+ push(@other_data,$datum);
+ } else {
+ my $info_key = "$i:resource.$part.$id.$datum";
+ push(@other_data,$Apache::lonhomework::history{$info_key});
+ }
+ }
+
+ my $output =
+ &$func('grade',
+ $Apache::lonhomework::history{$sub_key},
+ \@other_data);
+ if (defined($output)) {
+ $Apache::inputtags::submission_display{$sub_key} = $output;
+ }
+ }
}
1;
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