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version 1.1, 2004/01/19 21:29:46
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version 1.22, 2004/09/16 14:28:19
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Line 40 routines that are needed across multiple
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Line 40 routines that are needed across multiple
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| =head1 OVERVIEW |
=head1 OVERVIEW |
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|
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| =over 4 |
=over 4 |
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| =cut |
=cut |
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Line 59 use Apache::lonlocal;
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Line 58 use Apache::lonlocal;
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| use HTML::Entities(); |
use HTML::Entities(); |
| use Time::Local(); |
use Time::Local(); |
| use Spreadsheet::WriteExcel(); |
use Spreadsheet::WriteExcel(); |
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use GDBM_File; |
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use Storable qw(freeze thaw); |
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| #################################################### |
#################################################### |
| #################################################### |
#################################################### |
|
Line 94 sub render_resource {
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Line 95 sub render_resource {
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| '</td></tr></table>'; |
'</td></tr></table>'; |
| } |
} |
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|
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#################################################### |
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#################################################### |
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|
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=pod |
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|
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=item &ProblemSelector($AcceptedResponseTypes) |
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|
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Input: scalar containing regular expression which matches response |
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types to show. '.' will yield all, '(option|radiobutton)' will match |
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all option response and radiobutton problems. |
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|
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Returns: A string containing html for a table which lists the sequences |
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and their contents. A radiobutton is provided for each problem. |
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Skips 'survey' problems. |
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|
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=cut |
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|
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#################################################### |
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#################################################### |
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sub ProblemSelector { |
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my ($AcceptedResponseTypes) = @_; |
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my $Str; |
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$Str = "\n<table>\n"; |
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foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess('all')) { |
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next if ($seq->{'num_assess'}<1); |
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my $seq_str = ''; |
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foreach my $res (@{$seq->{'contents'}}) { |
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next if ($res->{'type'} ne 'assessment'); |
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foreach my $part (@{$res->{'parts'}}) { |
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my $partdata = $res->{'partdata'}->{$part}; |
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for (my $i=0;$i<scalar(@{$partdata->{'ResponseTypes'}});$i++){ |
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my $respid = $partdata->{'ResponseIds'}->[$i]; |
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my $resptype = $partdata->{'ResponseTypes'}->[$i]; |
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if ($resptype =~ m/$AcceptedResponseTypes/) { |
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my $value = &make_target_id({symb=>$res->{'symb'}, |
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part=>$part, |
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respid=>$respid, |
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resptype=>$resptype}); |
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my $checked = ''; |
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if ($ENV{'form.problemchoice'} eq $value) { |
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$checked = 'checked '; |
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} |
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my $title = $res->{'title'}; |
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if (! defined($title) || $title eq '') { |
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($title) = ($res->{'src'} =~ m:/([^/]*)$:); |
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} |
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$seq_str .= '<tr><td>'. |
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'<input type="radio" name="problemchoice" value="'.$value.'" '.$checked.'/>'. |
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'</td><td>'. |
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$resptype.'</td><td>'. |
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'<a href="'.$res->{'src'}.'">'.$title.'</a> '; |
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# '<a href="'.$res->{'src'}.'">'.$resptype.' '.$res->{'title'}.'</a> '; |
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if (scalar(@{$partdata->{'ResponseIds'}}) > 1) { |
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$seq_str .= &mt('response').' '.$respid; |
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} |
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$seq_str .= "</td></tr>\n"; |
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} |
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} |
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} |
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} |
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if ($seq_str ne '') { |
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$Str .= '<tr><td> </td><td colspan="2"><b>'.$seq->{'title'}.'</b></td>'. |
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"</tr>\n".$seq_str; |
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} |
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} |
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$Str .= "</table>\n"; |
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return $Str; |
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} |
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|
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#################################################### |
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#################################################### |
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|
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=pod |
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|
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=item &MultpleProblemSelector($navmap,$ResponseTypes,$selected,$inputname) |
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|
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Generate HTML with checkboxes for problem selection. |
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|
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Input: |
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|
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$navmap: a navmap object. If undef, navmaps will be called to create a |
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new object. |
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|
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$ResponseTypes: scalar containing regular expression which matches response |
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types. Only those problems which contain the given response type will be |
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shown. |
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|
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$selected: Scalar, Array, or hash reference of currently selected items. |
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|
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$inputname: The name of the form elements to use for the checkboxs. |
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|
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Returns: A string containing html for a table which lists the sequences |
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and their contents. A checkbox is provided for each problem. |
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|
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=cut |
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|
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#################################################### |
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#################################################### |
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sub MultipleProblemSelector { |
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my ($navmap,$ReponseTypes,$inputname,$formname)=@_; |
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my $cid = $ENV{'request.course.id'}; |
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my $Str; |
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# Massage the input as needed. |
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if (! defined($navmap)) { |
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$navmap = Apache::lonnavmaps::navmap->new(); |
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if (! defined($navmap)) { |
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$Str .= |
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'<h1>'.&mt('Error: cannot process course structure').'</h1>'; |
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return $Str; |
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} |
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} |
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my $selected = {map { ($_,1) } (&get_selected_symbs($inputname))}; |
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# Header |
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$Str .= <<"END"; |
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<script> |
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function checkall(value, checkName) { |
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for (i=0; i<document.forms.$formname.elements.length; i++) { |
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ele = document.forms.$formname.elements[i]; |
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if (ele.name == '$inputname') { |
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document.forms.$formname.elements[i].checked=value; |
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} |
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} |
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} |
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</script> |
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END |
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$Str .= |
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'<a href="javascript:checkall(true)">'.&mt('Select All').'</a>'. |
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(' 'x4). |
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'<a href="javascript:checkall(false)">'.&mt('Unselect All').'</a>'; |
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$Str .= $/.'<table>'.$/; |
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my $iterator = $navmap->getIterator(undef, undef, undef, 1); |
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my $sequence_string; |
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my @Accumulator = (&new_accumulator($ENV{'course.'.$cid.'.description'}, |
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'', |
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'', |
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$inputname)); |
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my @Sequence_Data; |
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while (my $curRes = $iterator->next()) { |
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if ($curRes == $iterator->END_MAP) { |
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if (ref($Accumulator[-1]) eq 'CODE') { |
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push(@Sequence_Data,&{$Accumulator[-1]}()); |
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pop(@Accumulator); |
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} |
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} elsif ($curRes == $iterator->BEGIN_MAP) { |
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# Not much to do here. |
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} |
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next if (! ref($curRes)); |
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if ($curRes->is_map) { |
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push(@Accumulator,&new_accumulator($curRes->title, |
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$curRes->src, |
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$curRes->symb, |
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$inputname)); |
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} elsif ($curRes->is_problem) { |
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if (@Accumulator && $Accumulator[-1] ne '') { |
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&{$Accumulator[-1]}($curRes, |
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exists($selected->{$curRes->symb})); |
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} |
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} |
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} |
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my $course_seq = pop(@Sequence_Data); |
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foreach my $seq ($course_seq,@Sequence_Data) { |
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#my $seq = pop(@Sequence_Data); |
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next if (! defined($seq) || ref($seq) ne 'HASH'); |
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$Str.= '<tr><td colspan="2">'. |
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'<b>'.&get_title($seq->{'title'},$seq->{'src'}).'</b>'. |
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'</td></tr>'.$/; |
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$Str.= $seq->{'html'}; |
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} |
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$Str .= '</table>'.$/; |
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return $Str; |
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} |
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|
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sub get_title { |
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my ($title,$src) = @_; |
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if ($title eq '') { |
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($title) = ($src =~ m|/([^/]+)$|); |
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} else { |
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$title =~ s/\:/:/g; |
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} |
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return $title; |
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} |
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|
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sub new_accumulator { |
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my ($title,$src,$symb,$inputname) = @_; |
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my $target; |
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return |
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sub { |
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if (@_) { |
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my ($res,$checked) = @_; |
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$target.='<tr><td>'. |
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'<input type="checkbox" name="'.$inputname.'" '; |
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if ($checked) { |
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$target .= 'checked '; |
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} |
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$target.= |
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'value="'.&Apache::lonnet::escape($res->symb).'" />'. |
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'</td><td>'.&get_title($res->title,$res->symb).'</td>'. |
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'</tr>'.$/; |
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} else { |
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if (defined($target)) { |
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return { title => $title, |
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symb => $symb, |
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src => $src, |
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html => $target, }; |
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} |
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return undef; |
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} |
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}; |
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} |
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|
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sub get_selected_symbs { |
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my ($inputfield) = @_; |
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my $field = 'form.'.$inputfield; |
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my @Symbs; |
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if (exists($ENV{$field})) { |
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if (! ref($ENV{$field})) { |
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@Symbs = (&Apache::lonnet::unescape($ENV{$field})); |
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} else { |
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@Symbs = (map {&Apache::lonnet::unescape($_);} @{$ENV{$field}}); |
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} |
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} |
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return @Symbs; |
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} |
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|
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#################################################### |
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#################################################### |
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|
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=pod |
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|
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=item &make_target_id($target) |
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|
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Inputs: Hash ref with the following entries: |
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$target->{'symb'}, $target->{'part'}, $target->{'respid'}, |
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$target->{'resptype'}. |
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|
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Returns: A string, suitable for a form parameter, which uniquely identifies |
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the problem, part, and response to do statistical analysis on. |
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|
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Used by Apache::lonstathelpers::ProblemSelector(). |
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|
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=cut |
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|
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#################################################### |
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#################################################### |
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sub make_target_id { |
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my ($target) = @_; |
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my $id = &Apache::lonnet::escape($target->{'symb'}).':'. |
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&Apache::lonnet::escape($target->{'part'}).':'. |
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&Apache::lonnet::escape($target->{'respid'}).':'. |
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&Apache::lonnet::escape($target->{'resptype'}); |
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return $id; |
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} |
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|
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#################################################### |
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#################################################### |
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|
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=pod |
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|
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=item &get_target_from_id($id) |
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|
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Inputs: $id, a scalar string from Apache::lonstathelpers::make_target_id(). |
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|
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Returns: A hash reference, $target, containing the following keys: |
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$target->{'symb'}, $target->{'part'}, $target->{'respid'}, |
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$target->{'resptype'}. |
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|
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=cut |
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|
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#################################################### |
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#################################################### |
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sub get_target_from_id { |
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my ($id) = @_; |
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if (! ref($id)) { |
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my ($symb,$part,$respid,$resptype) = split(':',$id); |
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return ({ symb => &Apache::lonnet::unescape($symb), |
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part => &Apache::lonnet::unescape($part), |
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respid => &Apache::lonnet::unescape($respid), |
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resptype => &Apache::lonnet::unescape($resptype)}); |
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} elsif (ref($id) eq 'ARRAY') { |
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my @Return; |
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foreach my $selected (@$id) { |
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my ($symb,$part,$respid,$resptype) = split(':',$selected); |
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push(@Return,{ symb => &Apache::lonnet::unescape($symb), |
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part => &Apache::lonnet::unescape($part), |
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respid => &Apache::lonnet::unescape($respid), |
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resptype => &Apache::lonnet::unescape($resptype)}); |
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} |
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return \@Return; |
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} |
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} |
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|
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#################################################### |
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#################################################### |
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|
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=pod |
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|
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=item &get_prev_curr_next($target,$AcceptableResponseTypes,$granularity) |
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|
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Determine the problem parts or responses preceeding and following the |
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current resource. |
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|
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Inputs: $target (see &Apache::lonstathelpers::get_target_from_id()) |
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$AcceptableResponseTypes, regular expression matching acceptable |
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response types, |
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$granularity, either 'part', 'response', or 'part_survey' |
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|
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Returns: three hash references, $prev, $curr, $next, which refer to the |
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preceeding, current, or following problem parts or responses, depending |
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on the value of $granularity. Values of undef indicate there is no |
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previous or next part/response. A value of undef for all three indicates |
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there was no match found to the current part/resource. |
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|
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The hash references contain the following keys: |
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symb, part, resource |
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|
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If $granularity eq 'response', the following ADDITIONAL keys will be present: |
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respid, resptype |
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|
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=cut |
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|
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#################################################### |
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#################################################### |
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sub get_prev_curr_next { |
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my ($target,$AcceptableResponseTypes,$granularity) = @_; |
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# |
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# Build an array with the data we need to search through |
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my @Resource; |
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foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess('all')) { |
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foreach my $res (@{$seq->{'contents'}}) { |
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next if ($res->{'type'} ne 'assessment'); |
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foreach my $part (@{$res->{'parts'}}) { |
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my $partdata = $res->{'partdata'}->{$part}; |
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if ($partdata->{'Survey'} && ($granularity eq 'part_survey')){ |
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push (@Resource, |
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{ symb => $res->{symb}, |
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part => $part, |
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resource => $res, |
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} ); |
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} elsif ($granularity eq 'part') { |
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push (@Resource, |
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{ symb => $res->{symb}, |
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part => $part, |
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resource => $res, |
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} ); |
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} elsif ($granularity eq 'response') { |
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for (my $i=0; |
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$i<scalar(@{$partdata->{'ResponseTypes'}}); |
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$i++){ |
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my $respid = $partdata->{'ResponseIds'}->[$i]; |
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my $resptype = $partdata->{'ResponseTypes'}->[$i]; |
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next if ($resptype !~ m/$AcceptableResponseTypes/); |
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push (@Resource, |
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{ symb => $res->{symb}, |
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part => $part, |
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respid => $partdata->{'ResponseIds'}->[$i], |
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resource => $res, |
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resptype => $resptype |
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} ); |
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} |
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} |
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} |
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} |
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} |
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# |
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# Get the index of the current situation |
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my $curr_idx; |
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for ($curr_idx=0;$curr_idx<$#Resource;$curr_idx++) { |
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my $curr_item = $Resource[$curr_idx]; |
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if ($granularity eq 'part' || $granularity eq 'part_survey') { |
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if ($curr_item->{'symb'} eq $target->{'symb'} && |
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$curr_item->{'part'} eq $target->{'part'}) { |
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last; |
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} |
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} elsif ($granularity eq 'response') { |
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if ($curr_item->{'symb'} eq $target->{'symb'} && |
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$curr_item->{'part'} eq $target->{'part'} && |
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$curr_item->{'respid'} eq $target->{'respid'} && |
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$curr_item->{'resptype'} eq $target->{'resptype'}) { |
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last; |
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} |
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} |
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} |
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my $curr_item = $Resource[$curr_idx]; |
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if ($granularity eq 'part' || $granularity eq 'part_survey') { |
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if ($curr_item->{'symb'} ne $target->{'symb'} || |
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$curr_item->{'part'} ne $target->{'part'}) { |
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# bogus symb - return nothing |
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return (undef,undef,undef); |
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} |
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} elsif ($granularity eq 'response') { |
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if ($curr_item->{'symb'} ne $target->{'symb'} || |
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$curr_item->{'part'} ne $target->{'part'} || |
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$curr_item->{'respid'} ne $target->{'respid'} || |
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$curr_item->{'resptype'} ne $target->{'resptype'}){ |
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# bogus symb - return nothing |
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return (undef,undef,undef); |
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} |
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} |
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# |
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# Now just pick up the data we need |
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my ($prev,$curr,$next); |
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if ($curr_idx == 0) { |
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$prev = undef; |
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$curr = $Resource[$curr_idx ]; |
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$next = $Resource[$curr_idx+1]; |
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} elsif ($curr_idx == $#Resource) { |
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$prev = $Resource[$curr_idx-1]; |
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$curr = $Resource[$curr_idx ]; |
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$next = undef; |
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} else { |
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$prev = $Resource[$curr_idx-1]; |
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$curr = $Resource[$curr_idx ]; |
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$next = $Resource[$curr_idx+1]; |
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} |
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return ($prev,$curr,$next); |
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} |
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|
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|
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##################################################### |
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##################################################### |
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|
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=pod |
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|
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=item GetStudentAnswers($r,$problem,$Students) |
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|
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Determines the correct answer for a set of students on a given problem. |
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The students answers are stored in the student hashes pointed to by the |
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array @$Students under the key 'answer'. |
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|
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Inputs: $r |
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$problem: hash reference containing the keys 'resource', 'part', and 'respid'. |
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$Students: reference to array containing student hashes (need 'username', |
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'domain'). |
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|
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Returns: nothing |
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|
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=cut |
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|
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##################################################### |
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##################################################### |
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sub GetStudentAnswers { |
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my ($r,$problem,$Students,$formname,$inputname) = @_; |
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my $status_type; |
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if (defined($formname)) { |
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$status_type = 'inline'; |
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} else { |
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$status_type = 'popup'; |
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} |
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my $c = $r->connection(); |
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my %Answers; |
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my ($resource,$partid,$respid) = ($problem->{'resource'}, |
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$problem->{'part'}, |
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$problem->{'respid'}); |
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# Read in the cache (if it exists) before we start timing things. |
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&Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'}); |
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# Open progress window |
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my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin |
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($r,'Student Answer Compilation Status', |
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'Student Answer Compilation Progress', scalar(@$Students), |
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$status_type,undef,$formname,$inputname); |
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$r->rflush(); |
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foreach my $student (@$Students) { |
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last if ($c->aborted()); |
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my $sname = $student->{'username'}; |
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my $sdom = $student->{'domain'}; |
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my $answer = &Apache::lonstathelpers::analyze_problem_as_student |
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($resource,$sname,$sdom,$partid,$respid); |
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&Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state, |
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&mt('last student')); |
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$student->{'answer'} = $answer; |
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} |
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&Apache::lonstathelpers::write_answer_cache(); |
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return if ($c->aborted()); |
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$r->rflush(); |
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# close progress window |
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&Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state); |
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return; |
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} |
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|
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##################################################### |
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##################################################### |
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|
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=pod |
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|
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=item analyze_problem_as_student |
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|
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Analyzes a homework problem for a student and returns the correct answer |
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for the student. Attempts to put together an answer for problem types |
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that do not natively support it. |
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|
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Inputs: $resource: a resource object |
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$sname, $sdom, $partid, $respid |
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|
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Returns: $answer |
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|
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If $partid and $respid are specified, $answer is simply a scalar containing |
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the correct answer for the response. |
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|
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If $partid or $respid are undefined, $answer will be a hash reference with |
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keys $partid.'.'.$respid.'.answer'. |
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|
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=cut |
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|
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##################################################### |
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##################################################### |
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sub analyze_problem_as_student { |
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my ($resource,$sname,$sdom,$partid,$respid) = @_; |
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if (ref($resource) ne 'HASH') { |
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my $res = $resource; |
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$resource = { 'src' => $res->src, |
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'symb' => $res->symb, |
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'parts' => $res->parts }; |
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foreach my $part (@{$resource->{'parts'}}) { |
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$resource->{'partdata'}->{$part}->{'ResponseIds'}= |
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[$res->responseIds($part)]; |
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} |
| |
} |
| |
my $returnvalue; |
| |
my $url = $resource->{'src'}; |
| |
my $symb = $resource->{'symb'}; |
| |
my $answer = &get_from_answer_cache($sname,$sdom,$symb,$partid,$respid); |
| |
if (defined($answer)) { |
| |
return($answer); |
| |
} |
| |
my $courseid = $ENV{'request.course.id'}; |
| |
my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze', |
| |
'grade_domain' => $sdom, |
| |
'grade_username' => $sname, |
| |
'grade_symb' => $symb, |
| |
'grade_courseid' => $courseid)); |
| |
(my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2); |
| |
my %Answer=&Apache::lonnet::str2hash($Answ); |
| |
# |
| |
undef($answer); |
| |
foreach my $partid (@{$resource->{'parts'}}) { |
| |
my $partdata = $resource->{'partdata'}->{$partid}; |
| |
foreach my $respid (@{$partdata->{'ResponseIds'}}) { |
| |
my $prefix = $partid.'.'.$respid; |
| |
my $key = $prefix.'.answer'; |
| |
$answer->{$partid}->{$respid} = &get_answer($prefix,$key,%Answer); |
| |
} |
| |
} |
| |
&store_answer($sname,$sdom,$symb,undef,undef,$answer); |
| |
if (! defined($partid)) { |
| |
$returnvalue = $answer; |
| |
} elsif (! defined($respid)) { |
| |
$returnvalue = $answer->{$partid}; |
| |
} else { |
| |
$returnvalue = $answer->{$partid}->{$respid}; |
| |
} |
| |
return $returnvalue; |
| |
} |
| |
|
| |
sub get_answer { |
| |
my ($prefix,$key,%Answer) = @_; |
| |
my $returnvalue; |
| |
if (exists($Answer{$key})) { |
| |
my $student_answer = $Answer{$key}->[0]; |
| |
if (! defined($student_answer)) { |
| |
$student_answer = $Answer{$key}->[1]; |
| |
} |
| |
$returnvalue = $student_answer; |
| |
} else { |
| |
if (exists($Answer{$prefix.'.shown'})) { |
| |
# The response has foils |
| |
my %values; |
| |
while (my ($k,$v) = each(%Answer)) { |
| |
next if ($k !~ /^$prefix\.foil\.(value|area)\.(.*)$/); |
| |
my $foilname = $2; |
| |
$values{$foilname}=$v; |
| |
} |
| |
foreach my $foil (@{$Answer{$prefix.'.shown'}}) { |
| |
if (ref($values{$foil}) eq 'ARRAY') { |
| |
$returnvalue.=&HTML::Entities::encode($foil,'<>&"').'='. |
| |
join(',',map {&HTML::Entities::encode($_,'<>&"')} @{$values{$foil}}).'&'; |
| |
} else { |
| |
$returnvalue.=&HTML::Entities::encode($foil,'<>&"').'='. |
| |
&HTML::Entities::encode($values{$foil},'<>&"').'&'; |
| |
} |
| |
} |
| |
$returnvalue =~ s/ /\%20/g; |
| |
chop ($returnvalue); |
| |
} |
| |
} |
| |
return $returnvalue; |
| |
} |
| |
|
| |
|
| |
##################################################### |
| |
##################################################### |
| |
|
| |
=pod |
| |
|
| |
=item Caching routines |
| |
|
| |
=over 4 |
| |
|
| |
=item &load_answer_cache($symb) |
| |
|
| |
Loads the cache for the given symb into memory from disk. |
| |
Requires the cache filename be set. |
| |
Only should be called by &ensure_proper_cache. |
| |
|
| |
=cut |
| |
|
| |
##################################################### |
| |
##################################################### |
| |
{ |
| |
my $cache_filename = undef; |
| |
my $current_symb = undef; |
| |
my %cache; |
| |
|
| |
sub load_answer_cache { |
| |
my ($symb) = @_; |
| |
return if (! defined($cache_filename)); |
| |
if (! defined($current_symb) || $current_symb ne $symb) { |
| |
undef(%cache); |
| |
my $storedstring; |
| |
my %cache_db; |
| |
if (tie(%cache_db,'GDBM_File',$cache_filename,&GDBM_READER(),0640)) { |
| |
$storedstring = $cache_db{&Apache::lonnet::escape($symb)}; |
| |
untie(%cache_db); |
| |
} |
| |
if (defined($storedstring)) { |
| |
%cache = %{thaw($storedstring)}; |
| |
} |
| |
} |
| |
return; |
| |
} |
| |
|
| |
##################################################### |
| |
##################################################### |
| |
|
| |
=pod |
| |
|
| |
=item &get_from_answer_cache($sname,$sdom,$symb,$partid,$respid) |
| |
|
| |
Returns the appropriate data from the cache, or undef if no data exists. |
| |
If $respid is undefined, a hash ref containing the answers for the given |
| |
$partid is returned. If $partid is undefined, a hash ref containing answers |
| |
for all of the parts is returned. |
| |
|
| |
=cut |
| |
|
| |
##################################################### |
| |
##################################################### |
| |
sub get_from_answer_cache { |
| |
my ($sname,$sdom,$symb,$partid,$respid) = @_; |
| |
&ensure_proper_cache($symb); |
| |
my $returnvalue; |
| |
if (exists($cache{$sname.':'.$sdom}) && |
| |
ref($cache{$sname.':'.$sdom}) eq 'HASH') { |
| |
if (defined($partid) && |
| |
exists($cache{$sname.':'.$sdom}->{$partid})) { |
| |
if (defined($respid) && |
| |
exists($cache{$sname.':'.$sdom}->{$partid}->{$respid})) { |
| |
$returnvalue = $cache{$sname.':'.$sdom}->{$partid}->{$respid}; |
| |
} else { |
| |
$returnvalue = $cache{$sname.':'.$sdom}->{$partid}; |
| |
} |
| |
} else { |
| |
$returnvalue = $cache{$sname.':'.$sdom}; |
| |
} |
| |
} else { |
| |
$returnvalue = undef; |
| |
} |
| |
return $returnvalue; |
| |
} |
| |
|
| |
##################################################### |
| |
##################################################### |
| |
|
| |
=pod |
| |
|
| |
=item &write_answer_cache($symb) |
| |
|
| |
Writes the in memory cache to disk so that it can be read in with |
| |
&load_answer_cache($symb). |
| |
|
| |
=cut |
| |
|
| |
##################################################### |
| |
##################################################### |
| |
sub write_answer_cache { |
| |
return if (! defined($current_symb) || ! defined($cache_filename)); |
| |
my %cache_db; |
| |
my $key = &Apache::lonnet::escape($current_symb); |
| |
if (tie(%cache_db,'GDBM_File',$cache_filename,&GDBM_WRCREAT(),0640)) { |
| |
my $storestring = freeze(\%cache); |
| |
$cache_db{$key}=$storestring; |
| |
$cache_db{$key.'.time'}=time; |
| |
untie(%cache_db); |
| |
} |
| |
undef(%cache); |
| |
undef($current_symb); |
| |
undef($cache_filename); |
| |
return; |
| |
} |
| |
|
| |
##################################################### |
| |
##################################################### |
| |
|
| |
=pod |
| |
|
| |
=item &ensure_proper_cache($symb) |
| |
|
| |
Called to make sure we have the proper cache set up. This is called |
| |
prior to every answer lookup. |
| |
|
| |
=cut |
| |
|
| |
##################################################### |
| |
##################################################### |
| |
sub ensure_proper_cache { |
| |
my ($symb) = @_; |
| |
my $cid = $ENV{'request.course.id'}; |
| |
my $new_filename = '/home/httpd/perl/tmp/'. |
| |
'problemanalysis_'.$cid.'_answer_cache.db'; |
| |
if (! defined($cache_filename) || |
| |
$cache_filename ne $new_filename || |
| |
! defined($current_symb) || |
| |
$current_symb ne $symb) { |
| |
$cache_filename = $new_filename; |
| |
# Notice: $current_symb is not set to $symb until after the cache is |
| |
# loaded. This is what tells &load_answer_cache to load in a new |
| |
# symb cache. |
| |
&load_answer_cache($symb); |
| |
$current_symb = $symb; |
| |
} |
| |
} |
| |
|
| |
##################################################### |
| |
##################################################### |
| |
|
| |
=pod |
| |
|
| |
=item &store_answer($sname,$sdom,$symb,$partid,$respid,$dataset) |
| |
|
| |
Stores the answer data in the in memory cache. |
| |
|
| |
=cut |
| |
|
| |
##################################################### |
| |
##################################################### |
| |
sub store_answer { |
| |
my ($sname,$sdom,$symb,$partid,$respid,$dataset) = @_; |
| |
return if ($symb ne $current_symb); |
| |
if (defined($partid)) { |
| |
if (defined($respid)) { |
| |
$cache{$sname.':'.$sdom}->{$partid}->{$respid} = $dataset; |
| |
} else { |
| |
$cache{$sname.':'.$sdom}->{$partid} = $dataset; |
| |
} |
| |
} else { |
| |
$cache{$sname.':'.$sdom}=$dataset; |
| |
} |
| |
return; |
| |
} |
| |
|
| |
} |
| |
##################################################### |
| |
##################################################### |
| |
|
| |
=pod |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
##################################################### |
| |
##################################################### |
| |
|
| |
## |
| |
## The following is copied from datecalc1.pl, part of the |
| |
## Spreadsheet::WriteExcel CPAN module. |
| |
## |
| |
## |
| |
###################################################################### |
| |
# |
| |
# Demonstration of writing date/time cells to Excel spreadsheets, |
| |
# using UNIX/Perl time as source of date/time. |
| |
# |
| |
# Copyright 2000, Andrew Benham, adsb@bigfoot.com |
| |
# |
| |
###################################################################### |
| |
# |
| |
# UNIX/Perl time is the time since the Epoch (00:00:00 GMT, 1 Jan 1970) |
| |
# measured in seconds. |
| |
# |
| |
# An Excel file can use exactly one of two different date/time systems. |
| |
# In these systems, a floating point number represents the number of days |
| |
# (and fractional parts of the day) since a start point. The floating point |
| |
# number is referred to as a 'serial'. |
| |
# The two systems ('1900' and '1904') use different starting points: |
| |
# '1900'; '1.00' is 1 Jan 1900 BUT 1900 is erroneously regarded as |
| |
# a leap year - see: |
| |
# http://support.microsoft.com/support/kb/articles/Q181/3/70.asp |
| |
# for the excuse^H^H^H^H^H^Hreason. |
| |
# '1904'; '1.00' is 2 Jan 1904. |
| |
# |
| |
# The '1904' system is the default for Apple Macs. Windows versions of |
| |
# Excel have the option to use the '1904' system. |
| |
# |
| |
# Note that Visual Basic's "DateSerial" function does NOT erroneously |
| |
# regard 1900 as a leap year, and thus its serials do not agree with |
| |
# the 1900 serials of Excel for dates before 1 Mar 1900. |
| |
# |
| |
# Note that StarOffice (at least at version 5.2) does NOT erroneously |
| |
# regard 1900 as a leap year, and thus its serials do not agree with |
| |
# the 1900 serials of Excel for dates before 1 Mar 1900. |
| |
# |
| |
###################################################################### |
| |
# |
| |
# Calculation description |
| |
# ======================= |
| |
# |
| |
# 1900 system |
| |
# ----------- |
| |
# Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 70 years after 1 Jan 1900. |
| |
# Of those 70 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68) |
| |
# were leap years with an extra day. |
| |
# Thus there were 17 + 70*365 days = 25567 days between 1 Jan 1900 and |
| |
# 1 Jan 1970. |
| |
# In the 1900 system, '1' is 1 Jan 1900, but as 1900 was not a leap year |
| |
# 1 Jan 1900 should really be '2', so 1 Jan 1970 is '25569'. |
| |
# |
| |
# 1904 system |
| |
# ----------- |
| |
# Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 66 years after 1 Jan 1904. |
| |
# Of those 66 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68) |
| |
# were leap years with an extra day. |
| |
# Thus there were 17 + 66*365 days = 24107 days between 1 Jan 1904 and |
| |
# 1 Jan 1970. |
| |
# In the 1904 system, 2 Jan 1904 being '1', 1 Jan 1970 is '24107'. |
| |
# |
| |
###################################################################### |
| |
# |
| |
# Copyright (c) 2000, Andrew Benham. |
| |
# This program is free software. It may be used, redistributed and/or |
| |
# modified under the same terms as Perl itself. |
| |
# |
| |
# Andrew Benham, adsb@bigfoot.com |
| |
# London, United Kingdom |
| |
# 11 Nov 2000 |
| |
# |
| |
###################################################################### |
| |
#----------------------------------------------------------- |
| |
# calc_serial() |
| |
# |
| |
# Called with (up to) 2 parameters. |
| |
# 1. Unix timestamp. If omitted, uses current time. |
| |
# 2. GMT flag. Set to '1' to return serial in GMT. |
| |
# If omitted, returns serial in appropriate timezone. |
| |
# |
| |
# Returns date/time serial according to $DATE_SYSTEM selected |
| |
#----------------------------------------------------------- |
| |
sub calc_serial { |
| |
# Use 1900 date system on all platforms other than Apple Mac (for which |
| |
# use 1904 date system). |
| |
my $DATE_SYSTEM = ($^O eq 'MacOS') ? 1 : 0; |
| |
my $time = (defined $_[0]) ? $_[0] : time(); |
| |
my $gmtflag = (defined $_[1]) ? $_[1] : 0; |
| |
# |
| |
# Divide timestamp by number of seconds in a day. |
| |
# This gives a date serial with '0' on 1 Jan 1970. |
| |
my $serial = $time / 86400; |
| |
# |
| |
# Adjust the date serial by the offset appropriate to the |
| |
# currently selected system (1900/1904). |
| |
if ($DATE_SYSTEM == 0) { # use 1900 system |
| |
$serial += 25569; |
| |
} else { # use 1904 system |
| |
$serial += 24107; |
| |
} |
| |
# |
| |
unless ($gmtflag) { |
| |
# Now have a 'raw' serial with the right offset. But this |
| |
# gives a serial in GMT, which is false unless the timezone |
| |
# is GMT. We need to adjust the serial by the appropriate |
| |
# timezone offset. |
| |
# Calculate the appropriate timezone offset by seeing what |
| |
# the differences between localtime and gmtime for the given |
| |
# time are. |
| |
# |
| |
my @gmtime = gmtime($time); |
| |
my @ltime = localtime($time); |
| |
# |
| |
# For the first 7 elements of the two arrays, adjust the |
| |
# date serial where the elements differ. |
| |
for (0 .. 6) { |
| |
my $diff = $ltime[$_] - $gmtime[$_]; |
| |
if ($diff) { |
| |
$serial += _adjustment($diff,$_); |
| |
} |
| |
} |
| |
} |
| |
# |
| |
# Perpetuate the error that 1900 was a leap year by decrementing |
| |
# the serial if we're using the 1900 system and the date is prior to |
| |
# 1 Mar 1900. This has the effect of making serial value '60' |
| |
# 29 Feb 1900. |
| |
# |
| |
# This fix only has any effect if UNIX/Perl time on the platform |
| |
# can represent 1900. Many can't. |
| |
# |
| |
unless ($DATE_SYSTEM) { |
| |
$serial-- if ($serial < 61); # '61' is 1 Mar 1900 |
| |
} |
| |
return $serial; |
| |
} |
| |
|
| |
sub _adjustment { |
| |
# Based on the difference in the localtime/gmtime array elements |
| |
# number, return the adjustment required to the serial. |
| |
# |
| |
# We only look at some elements of the localtime/gmtime arrays: |
| |
# seconds unlikely to be different as all known timezones |
| |
# have an offset of integral multiples of 15 minutes, |
| |
# but it's easy to do. |
| |
# minutes will be different for timezone offsets which are |
| |
# not an exact number of hours. |
| |
# hours very likely to be different. |
| |
# weekday will differ when localtime/gmtime difference |
| |
# straddles midnight. |
| |
# |
| |
# Assume that difference between localtime and gmtime is less than |
| |
# 5 days, then don't have to do maths for day of month, month number, |
| |
# year number, etc... |
| |
# |
| |
my ($delta,$element) = @_; |
| |
my $adjust = 0; |
| |
# |
| |
if ($element == 0) { # Seconds |
| |
$adjust = $delta/86400; # 60 * 60 * 24 |
| |
} elsif ($element == 1) { # Minutes |
| |
$adjust = $delta/1440; # 60 * 24 |
| |
} elsif ($element == 2) { # Hours |
| |
$adjust = $delta/24; # 24 |
| |
} elsif ($element == 6) { # Day of week number |
| |
# Catch difference straddling Sat/Sun in either direction |
| |
$delta += 7 if ($delta < -4); |
| |
$delta -= 7 if ($delta > 4); |
| |
# |
| |
$adjust = $delta; |
| |
} |
| |
return $adjust; |
| |
} |
| |
|
| |
########################################################### |
| |
########################################################### |
| |
|
| |
=pod |
| |
|
| |
=item get_problem_data |
| |
|
| |
Returns a data structure describing the problem. |
| |
|
| |
Inputs: $url |
| |
|
| |
Returns: %Partdata |
| |
|
| |
=cut |
| |
|
| |
## note: we must force each foil and option to not begin or end with |
| |
## spaces as they are stored without such data. |
| |
## |
| |
########################################################### |
| |
########################################################### |
| |
sub get_problem_data { |
| |
my ($url) = @_; |
| |
my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze')); |
| |
(my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2); |
| |
my %Answer; |
| |
%Answer=&Apache::lonnet::str2hash($Answ); |
| |
my %Partdata; |
| |
foreach my $part (@{$Answer{'parts'}}) { |
| |
while (my($key,$value) = each(%Answer)) { |
| |
# |
| |
# Logging code: |
| |
if (0) { |
| |
&Apache::lonnet::logthis($part.' got key "'.$key.'"'); |
| |
if (ref($value) eq 'ARRAY') { |
| |
&Apache::lonnet::logthis(' @'.join(',',@$value)); |
| |
} else { |
| |
&Apache::lonnet::logthis(' '.$value); |
| |
} |
| |
} |
| |
# End of logging code |
| |
next if ($key !~ /^$part/); |
| |
$key =~ s/^$part\.//; |
| |
if (ref($value) eq 'ARRAY') { |
| |
if ($key eq 'options') { |
| |
$Partdata{$part}->{'_Options'}=$value; |
| |
} elsif ($key eq 'concepts') { |
| |
$Partdata{$part}->{'_Concepts'}=$value; |
| |
} elsif ($key =~ /^concept\.(.*)$/) { |
| |
my $concept = $1; |
| |
foreach my $foil (@$value) { |
| |
$Partdata{$part}->{'_Foils'}->{$foil}->{'_Concept'}= |
| |
$concept; |
| |
} |
| |
} elsif ($key =~ /^(incorrect|answer|ans_low|ans_high)$/) { |
| |
$Partdata{$part}->{$key}=$value; |
| |
} |
| |
} else { |
| |
if ($key=~ /^foil\.text\.(.*)$/) { |
| |
my $foil = $1; |
| |
$Partdata{$part}->{'_Foils'}->{$foil}->{'name'}=$foil; |
| |
$value =~ s/(\s*$|^\s*)//g; |
| |
$Partdata{$part}->{'_Foils'}->{$foil}->{'text'}=$value; |
| |
} elsif ($key =~ /^foil\.value\.(.*)$/) { |
| |
my $foil = $1; |
| |
$Partdata{$part}->{'_Foils'}->{$foil}->{'value'}=$value; |
| |
} |
| |
} |
| |
} |
| |
} |
| |
return %Partdata; |
| |
} |
| |
|
| |
#################################################### |
| |
#################################################### |
| |
|
| |
=pod |
| |
|
| |
=item &limit_by_time() |
| |
|
| |
=cut |
| |
|
| |
#################################################### |
| |
#################################################### |
| |
sub limit_by_time_form { |
| |
my $Starttime_form = ''; |
| |
my $starttime = &Apache::lonhtmlcommon::get_date_from_form |
| |
('limitby_startdate'); |
| |
my $endtime = &Apache::lonhtmlcommon::get_date_from_form |
| |
('limitby_enddate'); |
| |
if (! defined($endtime)) { |
| |
$endtime = time; |
| |
} |
| |
if (! defined($starttime)) { |
| |
$starttime = $endtime - 60*60*24*7; |
| |
} |
| |
my $state; |
| |
if (&limit_by_time()) { |
| |
$state = ''; |
| |
} else { |
| |
$state = 'disabled'; |
| |
} |
| |
my $startdateform = &Apache::lonhtmlcommon::date_setter |
| |
('Statistics','limitby_startdate',$starttime,undef,undef,$state); |
| |
my $enddateform = &Apache::lonhtmlcommon::date_setter |
| |
('Statistics','limitby_enddate',$endtime,undef,undef,$state); |
| |
my $Str; |
| |
$Str .= '<script language="Javascript" >'; |
| |
$Str .= 'function toggle_limitby_activity(state) {'; |
| |
$Str .= ' if (state) {'; |
| |
$Str .= ' limitby_startdate_enable();'; |
| |
$Str .= ' limitby_enddate_enable();'; |
| |
$Str .= ' } else {'; |
| |
$Str .= ' limitby_startdate_disable();'; |
| |
$Str .= ' limitby_enddate_disable();'; |
| |
$Str .= ' }'; |
| |
$Str .= '}'; |
| |
$Str .= '</script>'; |
| |
$Str .= '<fieldset>'; |
| |
my $timecheckbox = '<input type="checkbox" name="limit_by_time" '; |
| |
if (&limit_by_time()) { |
| |
$timecheckbox .= ' checked '; |
| |
} |
| |
$timecheckbox .= 'OnChange="javascript:toggle_limitby_activity(this.checked);" '; |
| |
$timecheckbox .= ' />'; |
| |
$Str .= '<legend>'.&mt('[_1] Limit by time',$timecheckbox).'</legend>'; |
| |
$Str .= &mt('Start Time: [_1]',$startdateform).'<br />'; |
| |
$Str .= &mt(' End Time: [_1]',$enddateform).'<br />'; |
| |
$Str .= '</fieldset>'; |
| |
return $Str; |
| |
} |
| |
|
| |
sub limit_by_time { |
| |
if (exists($ENV{'form.limit_by_time'}) && |
| |
$ENV{'form.limit_by_time'} ne '' ) { |
| |
return 1; |
| |
} else { |
| |
return 0; |
| |
} |
| |
} |
| |
|
| |
sub get_time_limits { |
| |
my $starttime = &Apache::lonhtmlcommon::get_date_from_form |
| |
('limitby_startdate'); |
| |
my $endtime = &Apache::lonhtmlcommon::get_date_from_form |
| |
('limitby_enddate'); |
| |
return ($starttime,$endtime); |
| |
} |
| |
|
| |
|
| |
|
| |
#################################################### |
| |
#################################################### |
| |
|
| |
=pod |
| |
|
| |
=item sections_description |
| |
|
| |
Inputs: @Sections, an array of sections |
| |
|
| |
Returns: A text description of the sections selected. |
| |
|
| |
=cut |
| |
|
| |
#################################################### |
| |
#################################################### |
| |
sub sections_description { |
| |
my @Sections = @_; |
| |
my $sectionstring = ''; |
| |
if (scalar(@Sections) > 1) { |
| |
if (scalar(@Sections) > 2) { |
| |
my $last = pop(@Sections); |
| |
$sectionstring = "Sections ".join(', ',@Sections).', and '.$last; |
| |
} else { |
| |
$sectionstring = "Sections ".join(' and ',@Sections); |
| |
} |
| |
} else { |
| |
if ($Sections[0] eq 'all') { |
| |
$sectionstring = "All sections"; |
| |
} else { |
| |
$sectionstring = "Section ".$Sections[0]; |
| |
} |
| |
} |
| |
return $sectionstring; |
| |
} |
| |
|
| |
#################################################### |
| |
#################################################### |
| |
|
| |
=pod |
| |
|
| |
=item &manage_caches |
| |
|
| |
Inputs: $r, apache request object |
| |
|
| |
Returns: An array of scalars containing html for buttons. |
| |
|
| |
=cut |
| |
|
| |
#################################################### |
| |
#################################################### |
| |
sub manage_caches { |
| |
my ($r,$formname,$inputname) = @_; |
| |
&Apache::loncoursedata::clear_internal_caches(); |
| |
my $sectionkey = |
| |
join(',', |
| |
map { |
| |
&Apache::lonnet::escape($_); |
| |
} sort(@Apache::lonstatistics::SelectedSections) |
| |
); |
| |
my $statuskey = $Apache::lonstatistics::enrollment_status; |
| |
if (exists($ENV{'form.ClearCache'}) || |
| |
exists($ENV{'form.updatecaches'}) || |
| |
(exists($ENV{'form.firstrun'}) && $ENV{'form.firstrun'} ne 'no') || |
| |
(exists($ENV{'form.prevsection'}) && |
| |
$ENV{'form.prevsection'} ne $sectionkey) || |
| |
(exists($ENV{'form.prevenrollstatus'}) && |
| |
$ENV{'form.prevenrollstatus'} ne $statuskey) |
| |
) { |
| |
&Apache::lonstatistics::Gather_Full_Student_Data($r,$formname, |
| |
$inputname); |
| |
} |
| |
# |
| |
my @Buttons = |
| |
('<input type="submit" name="ClearCache" '. |
| |
'value="'.&mt('Clear Caches').'" />', |
| |
'<input type="submit" name="updatecaches" '. |
| |
'value="'.&mt('Update Caches').'" />'. |
| |
&Apache::loncommon::help_open_topic('Statistics_Cache'), |
| |
'<input type="hidden" name="prevsection" value="'.$sectionkey.'" />', |
| |
'<input type="hidden" name="prevenrollstatus" value="'.$statuskey.'" />' |
| |
); |
| |
# |
| |
if (! exists($ENV{'form.firstrun'})) { |
| |
$r->print('<input type="hidden" name="firstrun" value="yes" />'); |
| |
} else { |
| |
$r->print('<input type="hidden" name="firstrun" value="no" />'); |
| |
} |
| |
# |
| |
return @Buttons; |
| |
} |
| |
|
| |
|
| |
|
| |
|
| |
#################################################### |
| |
#################################################### |
| |
|
| |
=pod |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
#################################################### |
| |
#################################################### |
| |
|
| 1; |
1; |
| |
|
| __END__ |
__END__ |
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