--- loncom/homework/default_homework.lcpm 2005/11/16 22:18:22 1.104
+++ loncom/homework/default_homework.lcpm 2014/12/14 02:43:59 1.170
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run()
#
-# $Id: default_homework.lcpm,v 1.104 2005/11/16 22:18:22 albertel Exp $
+# $Id: default_homework.lcpm,v 1.170 2014/12/14 02:43:59 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -33,6 +33,72 @@ $pi=atan2(1,1)*4;
$rad2deg=180.0/$pi;
$deg2rad=$pi/180.0;
$"=' ';
+use strict;
+{
+ my $n = 0;
+ my $total = 0;
+ my $num_left = 0;
+ my @order;
+ my $type;
+
+ sub init_permutation {
+ my ($size,$requested_type) = @_;
+ @order = (0..$size-1);
+ $n = $size;
+ $type = $requested_type;
+ if ($type eq 'ordered') {
+ $total = $num_left = 1;
+ } elsif ($type eq 'unordered') {
+ $total = $num_left = &factorial($size);
+ } else {
+ die("Unkown type: $type");
+ }
+ }
+
+ sub get_next_permutation {
+ if ($num_left == $total) {
+ $num_left--;
+ return \@order;
+ }
+
+ # Find largest index j with a[j] < a[j+1]
+
+ my $j = scalar(@order) - 2;
+ while ($order[$j] > $order[$j+1]) {
+ $j--;
+ }
+
+ # Find index k such that a[k] is smallest integer
+ # greater than a[j] to the right of a[j]
+
+ my $k = scalar(@order) - 1;
+ while ($order[$j] > $order[$k]) {
+ $k--;
+ }
+
+ # Interchange a[j] and a[k]
+
+ @order[($k,$j)] = @order[($j,$k)];
+
+ # Put tail end of permutation after jth position in increasing order
+
+ my $r = scalar(@order) - 1;
+ my $s = $j + 1;
+
+ while ($r > $s) {
+ @order[($s,$r)]=@order[($r,$s)];
+ $r--;
+ $s++;
+ }
+
+ $num_left--;
+ return(\@order);
+ }
+
+ sub get_permutations_left {
+ return $num_left;
+ }
+}
sub check_commas {
my ($response)=@_;
@@ -60,6 +126,7 @@ sub check_commas {
return 1;
}
+
sub caparesponse_check {
my ($answer,$response)=@_;
#not properly used yet: calc
@@ -76,22 +143,18 @@ sub caparesponse_check {
my $sig_lbound=''; #done
my $sig_ubound=''; #done
-
#type's definitons come from capaParser.h
- my $message='';
+
#remove leading and trailing whitespace
if (!defined($response)) {
$response='';
}
if ($response=~ /^\s|\s$/) {
$response=~ s:^\s+|\s+$::g;
- $message .="Removed ws now :$response:\n";
- } else {
- $message .="no ws in :$response:\n";
}
- &LONCAPA_INTERNAL_DEBUG(" type is $type ");
+
if ($type eq 'cs' || $type eq 'ci') {
- #for string answers make surec all places spaces occur, there is
+ #for string answers make sure all places spaces occur, there is
#really only 1 space, in both the answer and the response
$answer=~s/ +/ /g;
$response=~s/ +/ /g;
@@ -100,7 +163,7 @@ sub caparesponse_check {
$response=~s/[\s,]//g;
}
if ($type eq 'float' && $unit=~/\$/) {
- if ($response!~/^\$/) { return "NO_UNIT: Missing \$ "; }
+ if ($response!~/^\$|\$$/) { return ('NO_UNIT', undef); }
$response=~s/\$//g;
}
if ($type eq 'float' && $unit=~/\,/ && (&check_commas($response)<0)) {
@@ -110,21 +173,21 @@ sub caparesponse_check {
$unit=~s/[\$,]//g;
if ($type eq 'float') { $response=~s/,//g; }
- if (length($response) > 500) { return "TOO_LONG: Answer too long"; }
+ if (length($response) > 500) { return ('TOO_LONG',undef); }
if ($type eq '' ) {
- $message .= "Didn't find a type :$type: defaulting\n";
if ( $answer eq ($answer *1.0)) { $type = 2;
} else { $type = 3; }
} else {
- if ($type eq 'cs') { $type = 4; }
+ if ($type eq 'cs') { $type = 4; }
elsif ($type eq 'ci') { $type = 3 }
elsif ($type eq 'mc') { $type = 5; }
elsif ($type eq 'fml') { $type = 8; }
+ elsif ($type eq 'math') { $type = 9; }
elsif ($type eq 'subj') { $type = 7; }
elsif ($type eq 'float') { $type = 2; }
elsif ($type eq 'int') { $type = 1; }
- else { return "ERROR: Unknown type of answer: $type" }
+ else { return ('ERROR', "Unknown type of answer: $type") }
}
my $points;
@@ -132,7 +195,6 @@ sub caparesponse_check {
#formula type setup the sample points
if ($type eq '8') {
($id_list,$points)=split(/@/,$samples);
- $message.="Found :$id_list:$points: points in $samples\n";
}
if ($tol eq '') {
$tol=0.0;
@@ -149,13 +211,28 @@ sub caparesponse_check {
($sig_ubound,$sig_lbound)=&LONCAPA_INTERNAL_get_sigrange($sig);
my $reterror="";
- my $result = &caparesponse_capa_check_answer($response,$answer,$type,
+ my $result;
+ if (($type eq '9') || ($type eq '8')) {
+ if ($response=~/\=/) {
+ return ('BAD_FORMULA','Please submit just an expression, not an equation.');
+ } elsif ($response =~ /\,/ and $response !~ /^\s*\{.*\}\s*$/) {
+ return ('BAD_FORMULA');
+ }
+ }
+ if ($type eq '9') {
+ $result = &maxima_check(&maxima_cas_formula_fix($response),&maxima_cas_formula_fix($answer),\$reterror);
+ } else {
+ if ($type eq '8') { # fml type
+ $response = &capa_formula_fix($response);
+ $answer = &capa_formula_fix($answer);
+ }
+ $result = &caparesponse_capa_check_answer($response,$answer,$type,
$tol_type,$tol,
$sig_lbound,$sig_ubound,
$ans_fmt,$unit,$calc,$id_list,
$points,$external::randomseed,
\$reterror);
-
+ }
if ($result == '1') { $result='EXACT_ANS'; }
elsif ($result == '2') { $result='APPROX_ANS'; }
elsif ($result == '3') { $result='SIG_FAIL'; }
@@ -176,65 +253,342 @@ sub caparesponse_check {
elsif ($result =='15') { $result='UNIT_IRRECONCIBLE'; }
else {$result = "ERROR: Unknown Result:$result:$@:";}
- return ("$result:\nRetError $reterror:\nAnswer $answer:\nResponse $response:\n type-$type|$tol|$tol_type|$sig:$sig_lbound:$sig_ubound|$unit|\n$message",$reterror);
+ return ($result,$reterror);
}
sub caparesponse_check_list {
- my $response=$LONCAPA::CAPAresponse_args{'response'};
- my ($result,@list);
- @list=@LONCAPA::CAPAresponse_answer;
- my $aresult='';
- my $current_answer;
- my $answers=join(':',@list);
- $result.="Got response :$answers:\n";
- &LONCAPA_INTERNAL_DEBUG(" got ".join(':',%LONCAPA::CAPAresponse_args));
- my @responselist;
+ my $responses=$LONCAPA::CAPAresponse_args{'response'};
+ &LONCAPA_INTERNAL_DEBUG("args ".join(':',%LONCAPA::CAPAresponse_args));
my $type = $LONCAPA::CAPAresponse_args{'type'};
- $result.="Got type :$type:\n";
- if ($type ne '' && $#list > 0) {
- (@responselist)=split(/,/,$response);
- } else {
- (@responselist)=($response);
- }
- my $unit='';
- $result.="Initial final response :$responselist['-1']:\n";
- if ($type eq '' || $type eq 'float') {
+ my $answerunit=$LONCAPA::CAPAresponse_args{'unit'};
+ &LONCAPA_INTERNAL_DEBUG("Got type :$type: answer unit :$answerunit:\n");
+
+ my $preprocess=$LONCAPA::CAPAresponse_args{'preprocess'};
+ $preprocess=~s/^\&//;
+
+ my $num_input_lines =
+ scalar(@{$LONCAPA::CAPAresponse_answer->{'answers'}});
+
+ if ($type ne '' ) {
+ if (scalar(@$responses) < $num_input_lines) {
+ return 'MISSING_ANSWER';
+ }
+ if (scalar(@$responses) > $num_input_lines) {
+ return 'EXTRA_ANSWER';
+ }
+
+ }
+
+ foreach my $which (0..($num_input_lines-1)) {
+ my $answer_size =
+ scalar(@{$LONCAPA::CAPAresponse_answer->{'answers'}[$which]});
+ if ($type ne ''
+ && $answer_size > 1) {
+ $responses->[$which]=[split(/,/,$responses->[$which])];
+ } else {
+ $responses->[$which]=[$responses->[$which]];
+ }
+ }
+ foreach my $which (0..($num_input_lines-1)) {
+ my $answer_size =
+ scalar(@{$LONCAPA::CAPAresponse_answer->{'answers'}[$which]});
+ my $response_size =
+ scalar(@{$responses->[$which]});
+ if ($answer_size > $response_size) {
+ return 'MISSING_ANSWER';
+ }
+ if ($answer_size < $response_size) {
+ return 'EXTRA_ANSWER';
+ }
+ }
+
+ my $unit;
+ my ($allowalgebra)=($LONCAPA::CAPAresponse_args{'allowalgebra'}=~/^(yes|1|on)$/i);
+ if ($type eq 'float' || $type eq '') {
#for numerical problems split off the unit
- if ( $responselist['-1']=~ /(.*[^\s])\s+([^\s]+)/ ) {
- $responselist['-1']=$1;
- $unit=$2;
+ my $part1;
+ my $part2;
+ if ($allowalgebra) {
+ ($part1,$part2)=($responses->[0][-1]=~ /^(.*[^\s])\s+([^\s]+)$/);
+ } else {
+ ($part1,$part2)=($responses->[0][-1]=~ /^([\d\.\,\s\$]*(?:(?:[xX\*]10[\^\*]*|[eE]*)[\+\-]*\d*)*(?:^|\S)\d+)([\$\s\w\^\*\/\(\)\+\-]*[^\d\.\s\,][\$\s\w\^\*\/\(\)\+\-]*)$/);
+ }
+ if (defined($part1) && defined($part2)) {
+ $responses->[0][-1]=$part1;
+ $unit=&capa_formula_fix($part2);
+ my $customunits=$LONCAPA::CAPAresponse_args{'customunits'};
+ if ($customunits =~ /\S/) {
+ foreach my $replacement (split(/\s*\,\s*/,$customunits)) {
+ my ($which,$what)=split(/\s*\=\s*/,$replacement);
+ if ((defined($which)) && (defined($what))) {
+ $what=&capa_formula_fix($what);
+ $unit=~s/$which/\($what\)/g;
+ }
+ }
+ }
}
}
- $result.="Final final response :$responselist['-1']:$unit:\n";
- $result.=":$#list: answers\n";
$unit=~s/\s//;
- my $i=0;
- my $awards='';
- my @msgs;
- for ($i=0; $i<@list;$i++) {
- my $msg;
- $result.="trying answer :$list[$i]:\n";
- my $thisanswer=$list[$i];
- $result.="trying answer :$thisanswer:\n";
- if (defined($list[$i])) {
- if ($unit eq '') {
- ($aresult,$msg)=&caparesponse_check($thisanswer,
- $responselist[$i]);
- } else {
- ($aresult,$msg)=&caparesponse_check($thisanswer,
- $responselist[$i]." $unit");
+ my $error;
+ foreach my $response (@$responses) {
+ foreach my $element (@$response) {
+ # See if we have preprocessor
+ if ($preprocess=~/\S/) {
+ if (defined(&$preprocess)) {
+ no strict 'refs';
+ $element=&$preprocess($element,$unit);
+ use strict 'refs';
+ }
+ }
+ if (($type eq 'float') || (($type eq '') && ($unit ne ''))) {
+ $element =~ s/\s//g;
+ }
+ my $appendunit=$unit;
+# Deal with percentages
+# unit is unit entered by student, answerunit is unit by author
+# Deprecated: divide answer by 100 if student entered percent,
+# but author did not. Too much confusion
+# if (($unit=~/\%/) && ($answerunit ne '%')) {
+# $element=$element/100;
+# $appendunit=~s/\%//;
+# }
+# Author entered percent, student did not
+ if (($unit!~/\%/) && ($answerunit=~/\%/)) {
+ $element=$element*100;
+ $appendunit='%'.$appendunit;
+ }
+# Zero does not need a dimension
+ if (($element =~ /^[0\.]+$/) && ($unit!~/\w/) && ($answerunit=~/\w/)) {
+ $appendunit=$answerunit;
+ }
+# Do the math for the student if allowed
+ if ($allowalgebra) {
+ $element=&cas('maxima',$element);
+ }
+ if ($appendunit ne '') {
+ $element .= " $appendunit";
+ }
+ &LONCAPA_INTERNAL_DEBUG("Made response element :$element:");
+ }
+ }
+
+ foreach my $thisanswer (@{ $LONCAPA::CAPAresponse_answer->{'answers'} }) {
+ if (!defined($thisanswer)) {
+ return ('ERROR','answer was undefined');
+ }
+ }
+
+ my $allow_control_char = 0;
+ my $control_chars_removed = 0;
+ my $ansstring;
+ if ($type eq 'cs' || $type eq 'ci') {
+ if (ref($LONCAPA::CAPAresponse_answer->{'answers'}) eq 'ARRAY') {
+ foreach my $strans (@{$LONCAPA::CAPAresponse_answer->{'answers'}}) {
+ if (ref($strans) eq 'ARRAY') {
+ $ansstring = join("\0",@{$strans});
+ foreach my $item (@{$strans}) {
+ if ($item =~ /[\000-\037]/) {
+ $allow_control_char = 1;
+ }
+ }
+ }
+ }
+ }
+ }
+
+# &LONCAPA_INTERNAL_DEBUG(&LONCAPA_INTERNAL_Dumper($responses));
+ my %memoized;
+ if ($LONCAPA::CAPAresponse_answer->{'type'} eq 'ordered') {
+ for (my $i=0; $i{'answers'}[$i];
+ my $response = $responses->[$i];
+ my $key = "$answer\0$response";
+ my (@awards,@msgs);
+ for (my $j=0; $j[$j] =~ /[\000-\037]/) {
+ $response->[$j] =~ s/[\000-\037]//g;
+ $control_chars_removed = 1;
+ }
+ }
+ }
+ # See if we have preprocessor for string responses
+ if (($preprocess=~/\S/) && ($type eq 'cs' || $type eq 'ci')) {
+ if (defined(&$preprocess)) {
+ no strict 'refs';
+ $response->[$j]=&$preprocess($response->[$j]);
+ use strict 'refs';
+ }
+ }
+
+ my ($award,$msg) = &caparesponse_check($answer->[$j],
+ $response->[$j]);
+ if ($type eq 'cs' || $type eq 'ci') {
+ $error = &verify_stringresponse($type,$award,$response->[$j],
+ $answer->[$j]);
+ }
+ push(@awards,$award);
+ push(@msgs, $msg);
+ }
+ my ($award,$msg) =
+ &LONCAPA_INTERNAL_FINALIZEAWARDS(\@awards,\@msgs);
+ $memoized{$key} = [$award,$msg];
+ }
+ } else {
+ #FIXME broken with unorder responses where one is a
+ # and the other is a (need to delay parse til
+ # inside the loop?)
+ foreach my $response (@$responses) {
+ my $response_size = scalar(@{$response});
+ foreach my $answer (@{ $LONCAPA::CAPAresponse_answer->{'answers'} }) {
+ my $key = "$answer\0$response";
+ my $answer_size = scalar(@{$answer});
+ my ($award,$msg);
+ if ($answer_size > $response_size) {
+ $award = 'MISSING_ANSWER';
+ } elsif ($answer_size < $response_size) {
+ $award = 'EXTRA_ANSWER';
+ } else {
+ my (@awards,@msgs);
+ for (my $j=0; $j[$j] =~ /[\000-\037]/) {
+ $response->[$j] =~ s/[\000-\037]//g;
+ $control_chars_removed = 1;
+ }
+ }
+ }
+ # See if we have preprocessor
+ if (($preprocess=~/\S/) && ($type eq 'cs' || $type eq 'ci')) {
+ if (defined(&$preprocess)) {
+ no strict 'refs';
+ $response->[$j]=&$preprocess($response->[$j]);
+ use strict 'refs';
+ }
+ }
+
+ my ($award,$msg) = &caparesponse_check($answer->[$j],
+ $response->[$j]);
+ if ($type eq 'cs' || $type eq 'ci') {
+ $error = &verify_stringresponse($type,$award,$response->[$j],
+ $answer->[$j]);
+ }
+ push(@awards,$award);
+ push(@msgs, $msg);
+ }
+ ($award,$msg) =
+ &LONCAPA_INTERNAL_FINALIZEAWARDS(\@awards,\@msgs);
+ }
+ $memoized{$key} = [$award,$msg];
}
- } else {
- $aresult='ERROR';
}
- my ($temp)=split(/:/, $aresult);
- $awards.="$temp,";
- $result.=$aresult;
- push(@msgs,$msg);
}
- chop($awards);
- return ("$awards:\n$result",@msgs);
+
+ my ($final_award,$final_msg);
+ &init_permutation(scalar(@$responses),
+ $LONCAPA::CAPAresponse_answer->{'type'});
+
+ # possible FIXMEs
+ # - significant time is spent calling non-safe space routine
+ # from safe space
+ # - early outs could be possible with classifying awards is to stratas
+ # and stopping as so as hitting the top strata
+ # - some early outs also might be possible with check ing the
+ # memoized hash of results (is correct even possible? etc.)
+
+ my (@final_awards,@final_msg);
+ while( &get_permutations_left() ) {
+ my $order = &get_next_permutation();
+ my (@awards, @msgs, $i);
+ foreach my $thisanswer (@{ $LONCAPA::CAPAresponse_answer->{'answers'} }) {
+ my $key = "$thisanswer\0".$responses->[$order->[$i]];
+ push(@awards,$memoized{$key}[0]);
+ push(@msgs,$memoized{$key}[1]);
+ $i++;
+
+ }
+ &LONCAPA_INTERNAL_DEBUG(" all awards ".join(':',@awards));
+
+ my ($possible_award,$possible_msg) =
+ &LONCAPA_INTERNAL_FINALIZEAWARDS(\@awards,\@msgs);
+ &LONCAPA_INTERNAL_DEBUG(" pos awards ".$possible_award);
+ push(@final_awards,$possible_award);
+ push(@final_msg,$possible_msg);
+ }
+
+ &LONCAPA_INTERNAL_DEBUG(" all final_awards ".join(':',@final_awards));
+ my ($final_award,$final_msg) =
+ &LONCAPA_INTERNAL_FINALIZEAWARDS(\@final_awards,\@final_msg,undef,1);
+ return ($final_award,$final_msg,$error,$control_chars_removed,$ansstring);
+}
+
+sub verify_stringresponse {
+ my ($type,$award,$resp,$ans) = @_;
+ return if ($award eq 'EXACT_ANS');
+ my $error;
+ if ($resp =~ /^\s|\s$/) {
+ $resp =~ s{^\s+|\s+$}{}g;
+ }
+ if ($ans =~ /^\s|\s$/) {
+ $ans =~ s{^\s+|\s+$}{}g;
+ }
+ if ($type eq 'ci') {
+ $resp = lc($resp);
+ $ans = lc($ans);
+ }
+ if ($resp eq $ans) {
+ if ($award eq 'INCORRECT') {
+ $error = 'MISGRADED';
+ }
+ }
+ return $error;
+}
+
+sub cas {
+ my ($system,$input,$library)=@_;
+ my $output;
+ my $dump;
+ if ($system eq 'maxima') {
+ $output=&maxima_eval($input,$library);
+ } elsif ($system eq 'R') {
+ ($output,$dump)=&r_eval($input,$library,0);
+ } else {
+ $output='Error: unrecognized CAS';
+ }
+ return $output;
+}
+
+sub cas_hashref {
+ my ($system,$input,$library)=@_;
+ if ($system eq 'maxima') {
+ return 'Error: unsupported CAS';
+ } elsif ($system eq 'R') {
+ return &r_eval($input,$library,1);
+ } else {
+ return 'Error: unrecognized CAS';
+ }
+}
+
+#
+# cas_hashref_entry takes a list of indices and gets the entry in a hash generated by Rreturn.
+# Call: cas_hashref_entry(Rvalue, index1, index2, ...) where Rvalue is a hash returned by Rreturn.
+# Rentry will return the first scalar value it encounters (ignoring excess indices).
+# If an invalid key is given, it returns undef.
+#
+sub cas_hashref_entry {
+ return &Rentry(@_);
+}
+
+#
+# cas_hashref_array takes a list of indices and gets a column array from a hash generated by Rreturn.
+# Call: cas_hashref_array(Rvalue, index1, index2, ...) where Rvalue is a hash returned by Rreturn.
+# If an invalid key is given, it returns undef.
+#
+sub cas_hashref_array {
+ return &Rarray(@_);
}
sub tex {
@@ -462,6 +816,7 @@ sub cos { CORE::cos(shift) }
sub exp { CORE::exp(shift) }
sub int { CORE::int(shift) }
sub log { CORE::log(shift) }
+sub ln { CORE::log(shift) }
sub atan2 { CORE::atan2($_[0],$_[1]) }
sub sqrt { CORE::sqrt(shift) }
@@ -688,16 +1043,47 @@ sub format_significant_figures {
my ($zeros) = ($xint =~ /(0+)$/);
# return number to original magnitude
my $numSig = $xint*10**($x10-$sig+$power);
- # insert trailing zero's if have decimal point
- $numSig =~ s/^(\d+)\.(\d+)(\e?(.*)?)$/$1\.$2$zeros$3/;
- # put a decimal pt for number ending with 0 and length = # of sig fig
- $numSig.='.' if (length($numSig) == $sig && $numSig =~ /0$/);
- if (length($numSig) < $sig) {
- $numSig.='.'.substr($zeros,0,($sig-length($numSig)));
+ if ($numSig =~ /^(\d+)\.(\d+)/) {
+ # insert trailing zero's if have decimal point
+ my @digarray = split('',$1.$2);
+ my $sigcount;
+ while (@digarray > 0) {
+ my $item = shift(@digarray);
+ if ($item) {
+ $sigcount = 1 + @digarray;
+ last;
+ }
+ }
+ if (($sigcount) && ($sig >= $sigcount)) {
+ $zeros = substr($zeros,0,($sig - $sigcount));
+ }
+ $numSig =~ s/^(\d+)\.(\d+)(\e?(.*)?)$/$1\.$2$zeros$3/;
+ } else {
+ if ($numSig =~ /^(\d+)e([\+\-]\d+)$/i) {
+ my $pre_exp = $1;
+ my $exponent = $2;
+ $numSig = $pre_exp.'.'.$zeros.'E'.$exponent;
+ } elsif ($numSig =~ /0$/) {
+ # add decimal pt for number ending with 0 and length == # of sig figs
+ if (length($numSig) == $sig) {
+ $numSig.='.';
+ } elsif (length($numSig) > $sig) {
+ # exponential form for number ending with 0 and length > # of sig figs
+ my $fmtsig = $sig-1;
+ if ($fmtsig) {
+ $numSig = sprintf('%.'.$fmtsig.'E',$numSig);
+ }
+ } elsif (length($numSig) < $sig) {
+ $numSig.='.'.substr($zeros,0,($sig-length($numSig)));
+ }
+ } else {
+ if (length($numSig) < $sig) {
+ $numSig.='.'.substr($zeros,0,($sig-length($numSig)));
+ }
+ }
}
# return number with sign
return $sign.$numSig;
-
}
sub map {
@@ -811,46 +1197,189 @@ sub class {
return $course;
}
+sub classid {
+ my $courseid = &EXT('request.course.id');
+ $courseid = '' if $courseid eq "";
+ return $courseid;
+}
+
+sub firstname {
+ my $firstname = &EXT('environment.firstname');
+ $firstname = '' if $firstname eq "";
+ return $firstname;
+}
+
+sub middlename {
+ my $middlename = &EXT('environment.middlename');
+ $middlename = '' if $middlename eq "";
+ return $middlename;
+}
+
+sub lastname {
+ my $lastname = &EXT('environment.lastname');
+ $lastname = '' if $lastname eq "";
+ return $lastname;
+}
+
sub sec {
my $sec = &EXT('request.course.sec');
$sec = '' if $sec eq "";
return $sec;
}
-sub open_date {
- my @dc = split(/\s+/,localtime(&EXT('resource.0.opendate')));
- return '' if ($dc[0] eq "Wed" and $dc[2] == 31 and $dc[4] == 1969);
- my @hm = split(/:/,$dc[3]);
- my $ampm = " am";
- if ($hm[0] > 12) {
- $hm[0]-=12;
- $ampm = " pm";
- }
- return $dc[0].', '.$dc[1].' '.$dc[2].', '.$dc[4].' at '.$hm[0].':'.$hm[1].$ampm;
-}
-
-sub due_date {
- my @dc = split(/\s+/,localtime(&EXT('resource.0.duedate')));
- return '' if ($dc[0] eq "Wed" and $dc[2] == 31 and $dc[4] == 1969);
- my @hm = split(/:/,$dc[3]);
- my $ampm = " am";
- if ($hm[0] > 12) {
- $hm[0]-=12;
- $ampm = " pm";
+sub submission {
+ my ($partid,$responseid,$subnumber,$encode,$cleanupnum,$mapalias)=@_;
+ my $sub='';
+ if ($subnumber) { $sub=$subnumber.':'; }
+ my $output =
+ &EXT('user.resource.'.$sub.'resource.'.$partid.'.'.$responseid.'.submission',$mapalias);
+ if (ref($output) eq 'ARRAY') {
+ my @items = @{$output};
+ if ($encode) {
+ @items = map { &encode_response($_); } @items;
+ }
+ if (ref($cleanupnum) eq 'HASH') {
+ @items = map { &cleanup_numerical_response($cleanupnum,$_); } @items;
+ }
+ return \@items;
+ } else {
+ if ($encode) {
+ $output = &encode_response($output);
+ }
+ if (ref($cleanupnum) eq 'HASH') {
+ $output = &cleanup_numerical_response($cleanupnum,$output);
+ }
+ return $output;
+ }
+}
+
+sub encode_response {
+ my ($value) = @_;
+ $value =~ s/&/&/g;
+ $value =~ s//>/g;
+ $value =~ s/"/"/g;
+ return $value;
+}
+
+sub cleanup_numerical_response {
+ my ($cleanupnum,$value) = @_;
+ if (ref($cleanupnum) eq 'HASH') {
+ if ($cleanupnum->{exponent}) {
+ if ($value =~ m{^(.*)[\*xX]\s*10\s*\^\s*(\+|\-)?\s*(\d+)(.*)$}) {
+ my $pre_exp = $1;
+ my $sign = $2;
+ my $exponent = $3;
+ my $post_exp = $4;
+ if ($pre_exp !~ /\./) {
+ $pre_exp .= '.';
+ }
+ if ($sign eq '') {
+ $sign = '+';
+ }
+ $value = $pre_exp.'E'.$sign.$exponent.$post_exp;
+ }
+ }
+ if ($cleanupnum->{comma}) {
+ $value =~ s{(\d+),(\d+)}{$1$2};
+ }
+ if ($cleanupnum->{letterforzero}) {
+ $value =~ s/^\s*o(\.\d+)/0$1/i;
+ }
+ if ($cleanupnum->{spaces}) {
+ $value =~ s{^\s+|\s+$}{}g;
+ if ($value =~ m{^(.*)\.\s+(\d+)(.*)$}) {
+ my $pre_pt = $1;
+ my $decimal = $2;
+ my $post_dec = $3;
+ $value = $pre_pt.'.'.$decimal.$post_dec;
+ }
+ }
+ if ($cleanupnum->{format} =~ /^\d+s$/i) {
+ $value = &format_significant_figures($value,$cleanupnum->{format});
+ }
}
- return $dc[0].', '.$dc[1].' '.$dc[2].', '.$dc[4].' at '.$hm[0].':'.$hm[1].$ampm;
+ return $value;
+}
+
+sub currentpart {
+ return $external::part;
+}
+
+sub eval_time {
+ my ($timestamp)=@_;
+ unless ($timestamp) { return ''; }
+ return &locallocaltime($timestamp);
+}
+
+sub open_date {
+ my ($partid)=@_;
+ unless ($partid) { $partid=0; }
+ return &eval_time(&EXT('resource.'.$partid.'.opendate'));
+}
+
+sub due_date {
+ my ($partid)=@_;
+ unless ($partid) { $partid=0; }
+ return &eval_time(&EXT('resource.'.$partid.'.duedate'));
}
sub answer_date {
- my @dc = split(/\s+/,localtime(&EXT('resource.0.answerdate')));
- return '' if ($dc[0] eq "Wed" and $dc[2] == 31 and $dc[4] == 1969);
- my @hm = split(/:/,$dc[3]);
- my $ampm = " am";
- if ($hm[0] > 12) {
- $hm[0]-=12;
- $ampm = " pm";
+ my ($partid)=@_;
+ unless ($partid) { $partid=0; }
+ return &eval_time(&EXT('resource.'.$partid.'.answerdate'));
+}
+
+sub open_date_epoch {
+ my ($partid)=@_;
+ unless ($partid) { $partid=0; }
+ return &EXT('resource.'.$partid.'.opendate');
+}
+
+sub due_date_epoch {
+ my ($partid)=@_;
+ unless ($partid) { $partid=0; }
+ return &EXT('resource.'.$partid.'.duedate');
+}
+
+sub answer_date_epoch {
+ my ($partid)=@_;
+ unless ($partid) { $partid=0; }
+ return &EXT('resource.'.$partid.'.answerdate');
+}
+
+sub parameter_setting {
+ my ($which,$partid)=@_;
+ unless ($partid) { $partid=0; }
+ return &EXT('resource.'.$partid.'.'.$which);
+}
+
+sub stored_data {
+ my ($which,$partid)=@_;
+ unless ($partid) { $partid=0; }
+ return &EXT('user.resource.resource.'.$partid.'.'.$which);
+}
+
+sub wrong_bubbles {
+ my ($correct,$lower,$upper,$step,@given)=@_;
+ my @array=();
+ my %hash=();
+ foreach my $new (@given) {
+ $hash{$new}=1;
+ }
+ my $num=int(¶meter_setting('numbubbles',¤tpart()));
+ unless ($num) { $num=8; }
+ if ($num>1) {
+ for (my $i=0;$i<=500;$i++) {
+ my $new=&random($lower,$upper,$step);
+ if ($hash{$new}) { next; }
+ if (abs($new-$correct)<$step) { next; }
+ $hash{$new}=1;
+ @array=keys(%hash);
+ if ($#array+2>=$num) { last; }
+ }
}
- return $dc[0].', '.$dc[1].' '.$dc[2].', '.$dc[4].' at '.$hm[0].':'.$hm[1].$ampm;
+ return @array;
}
sub array_moments {