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version 1.1, 2004/01/19 21:29:46
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version 1.4, 2004/02/19 20:17:01
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Line 94 sub render_resource {
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Line 94 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($AcceptedResponseTypes) |
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|
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Input: scalar containing regular expression which matches response |
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types to show. '.' will yield all, '(option|radiobutton)' will match |
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all option response and radiobutton problems. |
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|
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Returns: A string containing html for a table which lists the sequences |
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and their contents. A radiobutton is provided for each problem. |
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|
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=cut |
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|
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#################################################### |
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#################################################### |
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sub ProblemSelector { |
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my ($AcceptedResponseTypes) = @_; |
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my $Str; |
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$Str = "\n<table>\n"; |
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foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { |
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next if ($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.' '.$res->{'title'}.'</a> '; |
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if ($partdata->{'option'} > 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 $Str; |
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} |
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|
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#################################################### |
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#################################################### |
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|
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=pod |
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|
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=item &make_target_id($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 ($id) = @_; |
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my ($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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#################################################### |
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|
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=pod |
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|
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=item &get_prev_curr_next($target) |
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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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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' or 'response' |
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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()) { |
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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 ($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 ($granularity eq 'part') { |
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if ($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 ($granularity eq 'part') { |
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if ($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 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: $answer |
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|
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=cut |
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|
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##################################################### |
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##################################################### |
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sub analyze_problem_as_student { |
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my ($resource,$sname,$sdom,$partid,$respid) = @_; |
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my $returnvalue; |
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my $url = $resource->{'src'}; |
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my $symb = $resource->{'symb'}; |
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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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my $prefix = $partid.'.'.$respid; |
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my $key = $prefix.'.answer'; |
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if (exists($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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## |
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## The following is copied from datecalc1.pl, part of the |
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## Spreadsheet::WriteExcel CPAN module. |
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## |
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## |
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###################################################################### |
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# |
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# Demonstration of writing date/time cells to Excel spreadsheets, |
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# using UNIX/Perl time as source of date/time. |
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# |
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# Copyright 2000, Andrew Benham, adsb@bigfoot.com |
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# |
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###################################################################### |
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# |
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# UNIX/Perl time is the time since the Epoch (00:00:00 GMT, 1 Jan 1970) |
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# measured in seconds. |
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# |
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# An Excel file can use exactly one of two different date/time systems. |
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# In these systems, a floating point number represents the number of days |
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# (and fractional parts of the day) since a start point. The floating point |
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# number is referred to as a 'serial'. |
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# The two systems ('1900' and '1904') use different starting points: |
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# '1900'; '1.00' is 1 Jan 1900 BUT 1900 is erroneously regarded as |
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# a leap year - see: |
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# http://support.microsoft.com/support/kb/articles/Q181/3/70.asp |
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# for the excuse^H^H^H^H^H^Hreason. |
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# '1904'; '1.00' is 2 Jan 1904. |
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# |
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# The '1904' system is the default for Apple Macs. Windows versions of |
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# Excel have the option to use the '1904' system. |
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# |
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# Note that Visual Basic's "DateSerial" function does NOT erroneously |
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# regard 1900 as a leap year, and thus its serials do not agree with |
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# the 1900 serials of Excel for dates before 1 Mar 1900. |
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# |
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# Note that StarOffice (at least at version 5.2) does NOT erroneously |
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# regard 1900 as a leap year, and thus its serials do not agree with |
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# the 1900 serials of Excel for dates before 1 Mar 1900. |
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# |
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###################################################################### |
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# |
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# Calculation description |
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# ======================= |
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# |
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# 1900 system |
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# ----------- |
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# Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 70 years after 1 Jan 1900. |
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# Of those 70 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68) |
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# were leap years with an extra day. |
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# Thus there were 17 + 70*365 days = 25567 days between 1 Jan 1900 and |
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# 1 Jan 1970. |
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# In the 1900 system, '1' is 1 Jan 1900, but as 1900 was not a leap year |
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# 1 Jan 1900 should really be '2', so 1 Jan 1970 is '25569'. |
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# |
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# 1904 system |
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# ----------- |
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# Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 66 years after 1 Jan 1904. |
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# Of those 66 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68) |
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# were leap years with an extra day. |
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# Thus there were 17 + 66*365 days = 24107 days between 1 Jan 1904 and |
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# 1 Jan 1970. |
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# In the 1904 system, 2 Jan 1904 being '1', 1 Jan 1970 is '24107'. |
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# |
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###################################################################### |
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# |
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# Copyright (c) 2000, Andrew Benham. |
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# This program is free software. It may be used, redistributed and/or |
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# modified under the same terms as Perl itself. |
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# |
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# Andrew Benham, adsb@bigfoot.com |
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# London, United Kingdom |
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# 11 Nov 2000 |
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# |
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###################################################################### |
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#----------------------------------------------------------- |
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# calc_serial() |
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# |
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# Called with (up to) 2 parameters. |
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# 1. Unix timestamp. If omitted, uses current time. |
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# 2. GMT flag. Set to '1' to return serial in GMT. |
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# If omitted, returns serial in appropriate timezone. |
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# |
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# Returns date/time serial according to $DATE_SYSTEM selected |
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#----------------------------------------------------------- |
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sub calc_serial { |
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# Use 1900 date system on all platforms other than Apple Mac (for which |
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# use 1904 date system). |
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my $DATE_SYSTEM = ($^O eq 'MacOS') ? 1 : 0; |
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my $time = (defined $_[0]) ? $_[0] : time(); |
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my $gmtflag = (defined $_[1]) ? $_[1] : 0; |
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# |
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# Divide timestamp by number of seconds in a day. |
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# This gives a date serial with '0' on 1 Jan 1970. |
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my $serial = $time / 86400; |
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# |
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# Adjust the date serial by the offset appropriate to the |
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# currently selected system (1900/1904). |
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if ($DATE_SYSTEM == 0) { # use 1900 system |
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$serial += 25569; |
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} else { # use 1904 system |
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$serial += 24107; |
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} |
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# |
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unless ($gmtflag) { |
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# Now have a 'raw' serial with the right offset. But this |
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# gives a serial in GMT, which is false unless the timezone |
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# is GMT. We need to adjust the serial by the appropriate |
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# timezone offset. |
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# Calculate the appropriate timezone offset by seeing what |
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# the differences between localtime and gmtime for the given |
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# time are. |
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# |
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my @gmtime = gmtime($time); |
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my @ltime = localtime($time); |
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# |
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# For the first 7 elements of the two arrays, adjust the |
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# date serial where the elements differ. |
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for (0 .. 6) { |
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my $diff = $ltime[$_] - $gmtime[$_]; |
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if ($diff) { |
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$serial += _adjustment($diff,$_); |
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} |
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} |
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} |
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# |
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# Perpetuate the error that 1900 was a leap year by decrementing |
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# the serial if we're using the 1900 system and the date is prior to |
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# 1 Mar 1900. This has the effect of making serial value '60' |
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# 29 Feb 1900. |
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# |
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# This fix only has any effect if UNIX/Perl time on the platform |
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# can represent 1900. Many can't. |
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# |
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unless ($DATE_SYSTEM) { |
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$serial-- if ($serial < 61); # '61' is 1 Mar 1900 |
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} |
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return $serial; |
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} |
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|
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sub _adjustment { |
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# Based on the difference in the localtime/gmtime array elements |
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# number, return the adjustment required to the serial. |
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# |
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# We only look at some elements of the localtime/gmtime arrays: |
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# seconds unlikely to be different as all known timezones |
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# have an offset of integral multiples of 15 minutes, |
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# but it's easy to do. |
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# minutes will be different for timezone offsets which are |
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# not an exact number of hours. |
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# hours very likely to be different. |
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# weekday will differ when localtime/gmtime difference |
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# straddles midnight. |
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# |
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# Assume that difference between localtime and gmtime is less than |
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# 5 days, then don't have to do maths for day of month, month number, |
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# year number, etc... |
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# |
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my ($delta,$element) = @_; |
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my $adjust = 0; |
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# |
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if ($element == 0) { # Seconds |
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$adjust = $delta/86400; # 60 * 60 * 24 |
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} elsif ($element == 1) { # Minutes |
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$adjust = $delta/1440; # 60 * 24 |
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} elsif ($element == 2) { # Hours |
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$adjust = $delta/24; # 24 |
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} elsif ($element == 6) { # Day of week number |
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# Catch difference straddling Sat/Sun in either direction |
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$delta += 7 if ($delta < -4); |
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$delta -= 7 if ($delta > 4); |
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# |
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$adjust = $delta; |
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} |
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return $adjust; |
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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_problem_data |
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|
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Returns a data structure describing the problem. |
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|
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Inputs: $url |
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|
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Returns: %Partdata |
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|
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=cut |
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|
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## note: we must force each foil and option to not begin or end with |
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## spaces as they are stored without such data. |
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## |
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########################################################### |
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########################################################### |
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sub get_problem_data { |
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my ($url) = @_; |
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my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze')); |
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(my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2); |
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my %Answer; |
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%Answer=&Apache::lonnet::str2hash($Answ); |
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my %Partdata; |
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foreach my $part (@{$Answer{'parts'}}) { |
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while (my($key,$value) = each(%Answer)) { |
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# |
| |
# Logging code: |
| |
if (1) { |
| |
&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 |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
#################################################### |
| |
#################################################### |
| |
|
| 1; |
1; |
| |
|
| __END__ |
__END__ |
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