version 1.1, 2004/01/19 21:29:46
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version 1.17, 2004/06/25 21:02:41
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Line 59 use Apache::lonlocal;
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Line 59 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 96 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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=pod |
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=item &ProblemSelector($AcceptedResponseTypes) |
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Input: scalar containing regular expression which matches response |
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types to show. '.' will yield all, '(option|radiobutton)' will match |
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all option response and radiobutton problems. |
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Returns: A string containing html for a table which lists the sequences |
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and their contents. A radiobutton is provided for each problem. |
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Skips 'survey' problems. |
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=cut |
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#################################################### |
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#################################################### |
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sub ProblemSelector { |
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my ($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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next if ($partdata->{'Survey'}); |
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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 $Str; |
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} |
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#################################################### |
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#################################################### |
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=pod |
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=item &make_target_id($target) |
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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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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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Used by Apache::lonstathelpers::ProblemSelector(). |
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=cut |
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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 $id; |
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} |
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#################################################### |
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#################################################### |
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=pod |
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=item &get_target_from_id($id) |
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Inputs: $id, a scalar string from Apache::lonstathelpers::make_target_id(). |
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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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=cut |
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#################################################### |
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#################################################### |
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sub get_target_from_id { |
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my ($id) = @_; |
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my ($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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} |
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#################################################### |
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#################################################### |
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=pod |
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=item &get_prev_curr_next($target,$AcceptableResponseTypes,$granularity) |
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Determine the problem parts or responses preceeding and following the |
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current resource. |
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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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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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The hash references contain the following keys: |
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symb, part, resource |
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If $granularity eq 'response', the following ADDITIONAL keys will be present: |
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respid, resptype |
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=cut |
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#################################################### |
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#################################################### |
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sub get_prev_curr_next { |
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my ($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 ($partdata->{'Survey'}) { |
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if ($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 => $res, |
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} ); |
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} |
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} elsif ($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,$next); |
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} |
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##################################################### |
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##################################################### |
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=pod |
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=item GetStudentAnswers($r,$problem,$Students) |
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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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Inputs: $r |
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$problem: hash reference containing the keys 'resource', 'part', and 'respid'. |
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$Students: reference to array containing student hashes (need 'username', |
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'domain'). |
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Returns: nothing |
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=cut |
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##################################################### |
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##################################################### |
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sub GetStudentAnswers { |
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my ($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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=pod |
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=item analyze_problem_as_student |
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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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Inputs: $resource: a resource object |
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$sname, $sdom, $partid, $respid |
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Returns: $answer |
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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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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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=cut |
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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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my $returnvalue; |
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my $url = $resource->{'src'}; |
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my $symb = $resource->{'symb'}; |
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my $answer = &get_from_answer_cache($sname,$sdom,$symb,$partid,$respid); |
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if (defined($answer)) { |
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return($answer); |
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} |
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my $courseid = $ENV{'request.course.id'}; |
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my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze', |
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'grade_domain' => $sdom, |
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'grade_username' => $sname, |
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'grade_symb' => $symb, |
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'grade_courseid' => $courseid)); |
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(my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2); |
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my %Answer=&Apache::lonnet::str2hash($Answ); |
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# |
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undef($answer); |
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foreach my $partid (@{$resource->{'parts'}}) { |
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my $partdata = $resource->{'partdata'}->{$partid}; |
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foreach my $respid (@{$partdata->{'ResponseIds'}}) { |
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my $prefix = $partid.'.'.$respid; |
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my $key = $prefix.'.answer'; |
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$answer->{$partid}->{$respid} = &get_answer($prefix,$key,%Answer); |
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} |
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} |
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&store_answer($sname,$sdom,$symb,undef,undef,$answer); |
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if (! defined($partid)) { |
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$returnvalue = $answer; |
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} elsif (! defined($respid)) { |
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$returnvalue = $answer->{$partid}; |
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} else { |
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$returnvalue = $answer->{$partid}->{$respid}; |
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} |
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return $returnvalue; |
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} |
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sub get_answer { |
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my ($prefix,$key,%Answer) = @_; |
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my $returnvalue; |
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if (exists($Answer{$key})) { |
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my $student_answer = $Answer{$key}->[0]; |
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if (! defined($student_answer)) { |
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$student_answer = $Answer{$key}->[1]; |
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} |
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$returnvalue = $student_answer; |
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} else { |
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if (exists($Answer{$prefix.'.shown'})) { |
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# The response has foils |
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my %values; |
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while (my ($k,$v) = each(%Answer)) { |
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next if ($k !~ /^$prefix\.foil\.(value|area)\.(.*)$/); |
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my $foilname = $2; |
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$values{$foilname}=$v; |
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} |
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foreach my $foil (@{$Answer{$prefix.'.shown'}}) { |
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if (ref($values{$foil}) eq 'ARRAY') { |
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$returnvalue.=&HTML::Entities::encode($foil,'<>&"').'='. |
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join(',',map {&HTML::Entities::encode($_,'<>&"')} @{$values{$foil}}).'&'; |
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} else { |
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$returnvalue.=&HTML::Entities::encode($foil,'<>&"').'='. |
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&HTML::Entities::encode($values{$foil},'<>&"').'&'; |
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} |
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} |
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$returnvalue =~ s/ /\%20/g; |
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chop ($returnvalue); |
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} |
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} |
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return $returnvalue; |
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} |
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##################################################### |
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##################################################### |
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=pod |
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=item Caching routines |
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=over 4 |
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=item &load_answer_cache($symb) |
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Loads the cache for the given symb into memory from disk. |
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Requires the cache filename be set. |
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Only should be called by &ensure_proper_cache. |
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=cut |
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##################################################### |
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##################################################### |
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{ |
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my $cache_filename = undef; |
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my $current_symb = undef; |
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my %cache; |
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sub load_answer_cache { |
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my ($symb) = @_; |
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return if (! defined($cache_filename)); |
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if (! defined($current_symb) || $current_symb ne $symb) { |
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undef(%cache); |
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my $storedstring; |
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my %cache_db; |
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if (tie(%cache_db,'GDBM_File',$cache_filename,&GDBM_READER(),0640)) { |
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$storedstring = $cache_db{&Apache::lonnet::escape($symb)}; |
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untie(%cache_db); |
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} |
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if (defined($storedstring)) { |
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%cache = %{thaw($storedstring)}; |
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} |
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} |
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return; |
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} |
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##################################################### |
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##################################################### |
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=pod |
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=item &get_from_answer_cache($sname,$sdom,$symb,$partid,$respid) |
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Returns the appropriate data from the cache, or undef if no data exists. |
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If $respid is undefined, a hash ref containing the answers for the given |
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$partid is returned. If $partid is undefined, a hash ref containing answers |
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for all of the parts is returned. |
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=cut |
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##################################################### |
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##################################################### |
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sub get_from_answer_cache { |
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my ($sname,$sdom,$symb,$partid,$respid) = @_; |
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&ensure_proper_cache($symb); |
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my $returnvalue; |
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if (exists($cache{$sname.':'.$sdom}) && |
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ref($cache{$sname.':'.$sdom}) eq 'HASH') { |
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if (defined($partid) && |
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exists($cache{$sname.':'.$sdom}->{$partid})) { |
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if (defined($respid) && |
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exists($cache{$sname.':'.$sdom}->{$partid}->{$respid})) { |
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$returnvalue = $cache{$sname.':'.$sdom}->{$partid}->{$respid}; |
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} else { |
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$returnvalue = $cache{$sname.':'.$sdom}->{$partid}; |
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} |
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} else { |
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$returnvalue = $cache{$sname.':'.$sdom}; |
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} |
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} else { |
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$returnvalue = undef; |
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} |
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return $returnvalue; |
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} |
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##################################################### |
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##################################################### |
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=pod |
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=item &write_answer_cache($symb) |
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Writes the in memory cache to disk so that it can be read in with |
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&load_answer_cache($symb). |
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=cut |
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##################################################### |
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##################################################### |
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sub write_answer_cache { |
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return if (! defined($current_symb) || ! defined($cache_filename)); |
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my %cache_db; |
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my $key = &Apache::lonnet::escape($current_symb); |
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if (tie(%cache_db,'GDBM_File',$cache_filename,&GDBM_WRCREAT(),0640)) { |
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my $storestring = freeze(\%cache); |
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$cache_db{$key}=$storestring; |
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$cache_db{$key.'.time'}=time; |
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untie(%cache_db); |
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} |
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undef(%cache); |
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undef($current_symb); |
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undef($cache_filename); |
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return; |
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} |
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##################################################### |
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##################################################### |
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=pod |
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=item &ensure_proper_cache($symb) |
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Called to make sure we have the proper cache set up. This is called |
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prior to every answer lookup. |
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=cut |
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##################################################### |
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##################################################### |
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sub ensure_proper_cache { |
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my ($symb) = @_; |
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my $cid = $ENV{'request.course.id'}; |
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my $new_filename = '/home/httpd/perl/tmp/'. |
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'problemanalsysis_'.$cid.'answer_cache.db'; |
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if (! defined($cache_filename) || |
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$cache_filename ne $new_filename || |
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! defined($current_symb) || |
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$current_symb ne $symb) { |
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$cache_filename = $new_filename; |
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# Notice: $current_symb is not set to $symb until after the cache is |
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# loaded. This is what tells &load_answer_cache to load in a new |
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# symb cache. |
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&load_answer_cache($symb); |
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$current_symb = $symb; |
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} |
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} |
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|
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##################################################### |
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##################################################### |
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=pod |
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|
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=item &store_answer($sname,$sdom,$symb,$partid,$respid,$dataset) |
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Stores the answer data in the in memory cache. |
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|
|
=cut |
|
|
|
##################################################### |
|
##################################################### |
|
sub store_answer { |
|
my ($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__ |