--- loncom/interface/statistics/lonstudentassessment.pm 2003/03/06 21:12:54 1.36
+++ loncom/interface/statistics/lonstudentassessment.pm 2003/06/11 14:41:59 1.56
@@ -1,6 +1,6 @@
# The LearningOnline Network with CAPA
#
-# $Id: lonstudentassessment.pm,v 1.36 2003/03/06 21:12:54 matthew Exp $
+# $Id: lonstudentassessment.pm,v 1.56 2003/06/11 14:41:59 matthew Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -85,13 +85,25 @@ my $Statistics;
=item $show 'all', 'totals', or 'scores' determines how much data is output
+=item $data determines what performance data is shown
+
+=item $datadescription A short description of the output data selected.
+
+=item $base 'tries' or 'scores' determines the base of the performance shown
+
+=item $single_student_mode evaluates to true if we are showing only one
+student.
+
=cut
#######################################################
#######################################################
my $show_links;
my $output_mode;
-my $show;
+my $data;
+my $base;
+my $datadescription;
+my $single_student_mode;
#######################################################
#######################################################
@@ -127,27 +139,20 @@ Inputs:
sub BuildStudentAssessmentPage {
my ($r,$c)=@_;
undef($Statistics);
+ $single_student_mode = 1 if ($ENV{'form.SelectedStudent'});
#
# Print out the HTML headers for the interface
# This also parses the output mode selector
- # This step must always be done.
+ # This step must *always* be done.
$r->print(&CreateInterface());
$r->print('');
+ $r->print('');
$r->rflush();
- if (! exists($ENV{'form.notfirstrun'})) {
- $r->print(<
-
-Please make your selections in the boxes above and hit
-the button marked "Update Display".
-
-
-ENDMSG
-# $r->print(&OutputDescriptions());
+ if (! exists($ENV{'form.notfirstrun'}) && ! $single_student_mode) {
return;
}
#
- #
my $initialize = \&html_initialize;
my $output_student = \&html_outputstudent;
my $finish = \&html_finish;
@@ -156,10 +161,6 @@ ENDMSG
$initialize = \&excel_initialize;
$output_student = \&excel_outputstudent;
$finish = \&excel_finish;
- } elsif ($output_mode eq 'multi-sheet excel') {
- $initialize = \&multi_sheet_excel_initialize;
- $output_student = \&multi_sheet_excel_outputstudent;
- $finish = \&multi_sheet_excel_finish;
} elsif ($output_mode eq 'csv') {
$initialize = \&csv_initialize;
$output_student = \&csv_outputstudent;
@@ -168,9 +169,26 @@ ENDMSG
#
if($c->aborted()) { return ; }
#
+ # Determine which students we want to look at
+ my @Students;
+ if ($single_student_mode) {
+ @Students = (&Apache::lonstatistics::current_student());
+ $r->print(&next_and_previous_buttons());
+ $r->rflush();
+ } else {
+ @Students = @Apache::lonstatistics::Students;
+ }
+ #
+ # Perform generic initialization tasks
+ # Since we use lonnet::EXT to retrieve problem weights,
+ # to ensure current data we must clear the caches out.
+ # This makes sure that parameter changes at the student level
+ # are immediately reflected in the chart.
+ &Apache::lonnet::clear_EXT_cache_status();
+ #
# Call the initialize routine selected above
$initialize->($r);
- foreach my $student (@Apache::lonstatistics::Students) {
+ foreach my $student (@Students) {
if($c->aborted()) {
$finish->($r);
return ;
@@ -186,6 +204,54 @@ ENDMSG
#######################################################
#######################################################
+sub next_and_previous_buttons {
+ my $Str = '';
+ $Str .= '';
+ #
+ # Build the previous student link
+ my $previous = &Apache::lonstatistics::previous_student();
+ my $previousbutton = '';
+ if (defined($previous)) {
+ my $sname = $previous->{'username'}.':'.$previous->{'domain'};
+ $previousbutton .= '';
+ } else {
+ $previousbutton .= '';
+ }
+ #
+ # Build the next student link
+ my $next = &Apache::lonstatistics::next_student();
+ my $nextbutton = '';
+ if (defined($next)) {
+ my $sname = $next->{'username'}.':'.$next->{'domain'};
+ $nextbutton .= '';
+ } else {
+ $nextbutton .= '';
+ }
+ #
+ # Build the 'all students' button
+ my $all = '';
+ $all .= '';
+ $Str .= $previousbutton.(' 'x5).$all.(' 'x5).$nextbutton;
+ return $Str;
+}
+
+#######################################################
+#######################################################
sub get_student_fields_to_show {
my @to_show = @Apache::lonstatistics::SelectedStudentData;
@@ -198,19 +264,6 @@ sub get_student_fields_to_show {
return @to_show;
}
-sub get_sequences_to_show {
- my @Sequences;
- foreach my $map_symb (@Apache::lonstatistics::SelectedMaps) {
- foreach my $sequence (@Apache::lonstatistics::Sequences) {
- next if ($sequence->{'symb'} ne $map_symb && $map_symb ne 'all');
- next if ($sequence->{'num_assess'} < 1);
- push (@Sequences,$sequence);
- }
- }
- return @Sequences;
-}
-
-
#######################################################
#######################################################
@@ -237,8 +290,10 @@ sub CreateInterface {
$Str .= '
'."\n";
$Str .= ''."\n";
+ $Str .= '';
+ $Str .= ' 'x8;
return $Str;
}
@@ -281,93 +342,54 @@ my @OutputOptions =
description => 'Output HTML with each symbol linked to the problem '.
'which generated it.',
mode => 'html',
- show => 'all',
show_links => 'yes',
},
+ { name => 'HTML, with all links',
+ value => 'html, with all links',
+ description => 'Output HTML with each symbol linked to the problem '.
+ 'which generated it. '.
+ 'This includes links for unattempted problems.',
+ mode => 'html',
+ show_links => 'all',
+ },
{ name => 'HTML, without links',
value => 'html, without links',
description => 'Output HTML. By not including links, the size of the'.
' web page is greatly reduced. If your browser crashes on the '.
'full display, try this.',
mode => 'html',
- show => 'all',
show_links => 'no',
},
- { name => 'HTML, scores only',
- value => 'html, scores only',
- description => 'Output HTML, only showing the total number of correct'.
- ' problems (or problem parts) and not the maximum possible for '.
- 'each student',
- mode => 'html',
- show => 'scores',
- show_links => 'no',
- },
- { name => 'HTML, totals',
- value => 'html, totals',
- description => 'Output HTML, but only the summary statistics for each'.
- ' sequence selected.',
- mode => 'html',
- show => 'totals',
- show_links => 'no',
- },
- { name => 'Excel, scores only',
- value => 'excel, scores only',
- description => 'Output an Excel file (compatable with Excel 95), '.
- 'with a single column for each sequence showing the students '.
- 'score.',
- mode => 'excel',
- show => 'scores',
- show_links => 'no',
- },
- { name => 'Excel, totals',
- value => 'excel, totals',
- description => 'Output an Excel file (compatable with Excel 95), '.
- 'with two columns for each sequence, the students score on the '.
- 'sequence and the students maximum possible on the sequence',
+ { name => 'Excel',
+ value => 'excel',
+ description => 'Output an Excel file (compatable with Excel 95).',
mode => 'excel',
- show => 'totals',
show_links => 'no',
- },
- { name => 'multi-sheet Excel',
- value => 'multi-sheet excel',
- description => 'Output an Excel file (compatable with Excel 95), '.
- 'with a seperate worksheet for each sequence you have selected '.
- 'the data for each problem part '.
- '(number of tries, status, points awarded) will be listed.',
- mode => 'multi-sheet excel',
- show => 'totals',
- show_links => 'no',
- },
- { name => 'multi-sheet Excel, by section',
- value => 'multi-sheet excel, by section',
- description => 'Output an Excel file (compatable with Excel 95), '.
- 'with a seperate worksheet for each sequence you have selected '.
- 'the data for each problem part '.
- '(number of tries, status, points awarded) will be listed. '.
- 'There will be one Excel workbook for each section selected.',
- mode => 'multi-sheet excel',
- show => 'by section',
- show_links => 'no',
- },
- { name => 'CSV, everything',
- value => 'csv, everything',
- description => '',
+ },
+# { name => 'multi-sheet Excel',
+# value => 'multi-sheet excel',
+# description => 'Output an Excel file (compatable with Excel 95), '.
+# 'with a seperate worksheet for each sequence you have selected '.
+# 'the data for each problem part '.
+# '(number of tries, status, points awarded) will be listed.',
+# mode => 'multi-sheet excel',
+# show_links => 'no',
+# },
+# { name => 'multi-sheet Excel, by section',
+# value => 'multi-sheet excel, by section',
+# description => 'Output an Excel file (compatable with Excel 95), '.
+# 'with a seperate worksheet for each sequence you have selected '.
+# 'the data for each problem part '.
+# '(number of tries, status, points awarded) will be listed. '.
+# 'There will be one Excel workbook for each section selected.',
+# mode => 'multi-sheet excel',
+# show_links => 'no',
+# },
+ { name => 'CSV',
+ value => 'csv',
+ description => 'Output a comma seperated values file suitable for '.
+ 'import into a spreadsheet.',
mode => 'csv',
- show => 'all',
- show_links => 'no',
- },
- { name => 'CSV, scores only',
- value => 'csv, scores only',
- description => '',
- mode => 'csv',
- show => 'scores',
- show_links => 'no',
- },
- { name => 'CSV, totals',
- value => 'csv, totals',
- description => '',
- mode => 'csv',
- show => 'totals',
show_links => 'no',
},
);
@@ -386,10 +408,10 @@ sub OutputDescriptions {
sub CreateAndParseOutputSelector {
my $Str = '';
- my $elementname = 'outputmode';
+ my $elementname = 'chartoutputmode';
#
# Format for output options is 'mode, restrictions';
- my $selected = 'html, with links';
+ my $selected = 'html, without links';
if (exists($ENV{'form.'.$elementname})) {
if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
$selected = $ENV{'form.'.$elementname}->[0];
@@ -401,11 +423,9 @@ sub CreateAndParseOutputSelector {
# Set package variables describing output mode
$show_links = 'no';
$output_mode = 'html';
- $show = 'all';
foreach my $option (@OutputOptions) {
next if ($option->{'value'} ne $selected);
$output_mode = $option->{'mode'};
- $show = $option->{'show'};
$show_links = $option->{'show_links'};
}
@@ -421,6 +441,100 @@ sub CreateAndParseOutputSelector {
return $Str;
}
+##
+## Data selector stuff
+##
+my @OutputDataOptions =
+ ( { name =>'Tries',
+ base =>'tries',
+ value => 'tries',
+ shortdesc => 'Number of Tries before success on each Problem Part',
+ longdesc =>'The number of tries before success on each problem part.',
+ },
+ { name =>'Parts Correct',
+ base =>'tries',
+ value => 'parts correct',
+ shortdesc => 'Number of Problem Parts completed successfully.',
+ longdesc => 'The Number of Problem Parts completed successfully.',
+ },
+ { name =>'Parts Correct & Maximums',
+ base =>'tries',
+ value => 'parts correct total',
+ shortdesc => 'Number of Problem Parts completed successfully.',
+ longdesc => 'The Number of Problem Parts completed successfully and '.
+ 'the maximum possible for each student',
+ },
+ { name => 'Scores',
+ base => 'scores',
+ value => 'scores',
+ shortdesc => 'Score on each Problem Part',
+ longdesc =>'The students score on each problem part, computed as'.
+ 'the part weight * part awarded',
+ },
+ { name => 'Scores Sum',
+ base => 'scores',
+ value => 'sum only',
+ shortdesc => 'Sum of Scores on each Problem Part',
+ longdesc =>'The total of the scores of the student on each problem'.
+ ' part in the sequences or folders selected.',
+ },
+ { name => 'Scores Sum & Maximums',
+ base => 'scores',
+ value => 'sum and total',
+ shortdesc => 'Total Score and Maximum Possible for each '.
+ 'Sequence or Folder',
+ longdesc => 'The total of the scores of the student on each problem'.
+ ' and the maximum possible for that student on each Sequence or '.
+ ' Folder.',
+ },
+ { name => 'Summary Table (Scores)',
+ base => 'scores',
+ value => 'final table scores',
+ shortdesc => 'Summary of Scores',
+ longdesc => '',
+ },
+ { name => 'Summary Table (Parts)',
+ base => 'tries',
+ value => 'final table parts',
+ shortdesc => 'Summary of Parts Correct',
+ longdesc => '',
+ }
+ );
+
+sub CreateAndParseOutputDataSelector {
+ my $Str = '';
+ my $elementname = 'chartoutputdata';
+ #
+ my $selected = 'scores';
+ if (exists($ENV{'form.'.$elementname})) {
+ if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
+ $selected = $ENV{'form.'.$elementname}->[0];
+ } else {
+ $selected = $ENV{'form.'.$elementname};
+ }
+ }
+ #
+ $data = 'scores';
+ foreach my $option (@OutputDataOptions) {
+ if ($option->{'value'} eq $selected) {
+ $data = $option->{'value'};
+ $base = $option->{'base'};
+ $datadescription = $option->{'shortdesc'};
+ }
+ }
+ #
+ # Build the form element
+ $Str = qq/";
+ return $Str;
+
+}
+
#######################################################
#######################################################
@@ -446,12 +560,30 @@ Return a line of the chart for a student
my $padding;
my $count;
+ my $nodata_count; # The number of students for which there is no data
+ my %prog_state; # progress state used by loncommon PrgWin routines
+
sub html_initialize {
my ($r) = @_;
#
$padding = ' 'x3;
$count = 0;
+ $nodata_count = 0;
+ #
+ $r->print("
");
+ }
#
+ # Set up progress window for 'final table' display only
+ if ($data =~ /^final table/) {
+ my $studentcount = scalar(@Apache::lonstatistics::Students);
+ %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
+ ($r,'Summary Table Status',
+ 'Summary Table Compilation Progress', $studentcount);
+ }
my $Str = "
\n";
# First, the @StudentData fields need to be listed
my @to_show = &get_student_fields_to_show();
@@ -462,14 +594,19 @@ sub html_initialize {
$Str .= $title.' 'x($width-$base).$padding;
}
# Now the selected sequences need to be listed
- foreach my $sequence (&get_sequences_to_show) {
+ foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()){
my $title = $sequence->{'title'};
my $base = $sequence->{'base_width'};
my $width = $sequence->{'width'};
$Str .= $title.' 'x($width-$base).$padding;
}
- $Str .= "total (of shown problems)
\n";
+ return $Str;
+}
+
}
#######################################################
@@ -588,7 +818,7 @@ sub multi_sheet_excel_initialize {
my $num_data_per_part = 2; # 'status' and 'numtries'
my $fields_per_student = scalar(&get_student_fields_to_show());
my $bytes_per_field = 20; # Back of the envelope calculation
- foreach my $seq (&get_sequences_to_show) {
+ foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
$num_sequences++ if ($seq->{'num_assess'} > 0);
$fields_per_student += $num_data_per_part * $seq->{'num_assess_parts'};
}
@@ -599,15 +829,15 @@ sub multi_sheet_excel_initialize {
if ($size_estimate > $max_size) { # try to stay under 5 megs
$num_workbooks += int($size_estimate / $max_size);
}
- if ($show eq 'by section') {
- if (@Apache::lonstatistics::SelectedSections > 1 &&
- $Apache::lonstatistics::SelectedSections[0] ne 'all') {
- $num_workbooks = scalar(@Apache::lonstatistics::SelectedSections);
- } else {
- # @Apache::lonstatistics::Sections contains 'all' as well.
- $num_workbooks = scalar(@Apache::lonstatistics::Sections) - 1;
- }
- }
+# if ($data eq ) {
+# if (@Apache::lonstatistics::SelectedSections > 1 &&
+# $Apache::lonstatistics::SelectedSections[0] ne 'all') {
+# $num_workbooks = scalar(@Apache::lonstatistics::SelectedSections);
+# } else {
+# # @Apache::lonstatistics::Sections contains 'all' as well.
+# $num_workbooks = scalar(@Apache::lonstatistics::Sections) - 1;
+# }
+# }
$r->print("Maximum allowed size: ".$max_size." bytes ");
$r->print("Number of students: ".$num_students." ");
@@ -657,10 +887,62 @@ my $rows_output;
my $cols_output;
my %prog_state; # progress window state
+my $request_aborted;
sub excel_initialize {
my ($r) = @_;
#
+ $request_aborted = undef;
+ my $total_columns = scalar(&get_student_fields_to_show());
+ foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+ # Add 2 because we need a 'sum' and 'total' column for each
+ $total_columns += $seq->{'num_assess_parts'}+2;
+ }
+ if ($data eq 'tries' && $total_columns > 255) {
+ $r->print(<Unable to Complete Request
+
+LON-CAPA is unable to produce your Excel spreadsheet because your selections
+will result in more than 255 columns. Excel allows only 255 columns in a
+spreadsheet.
+
+You may consider reducing the number of Sequences or Folders you
+have selected.
+
+LON-CAPA can produce CSV files of this data or Excel files of the
+summary data (Parts Correct or Parts Correct & Totals).
+
+LON-CAPA is unable to produce your Excel spreadsheet because your selections
+will result in more than 255 columns. Excel allows only 255 columns in a
+spreadsheet.
+
+You may consider reducing the number of Sequences or Folders you
+have selected.
+
+LON-CAPA can produce CSV files of this data or Excel files of the
+summary data (Scores Sum or Scores Sum & Totals).
+
+END
+ $request_aborted = 1;
+ }
+ if ($data =~ /^final table/) {
+ $r->print(<Unable to Complete Request
+
+The Summary Table (Scores) option is not available for non-HTML output.
+
+END
+ $request_aborted = 1;
+ }
+ return if ($request_aborted);
+ #
$filename = '/prtspool/'.
$ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
time.'_'.rand(1000000000).'.xls';
@@ -722,21 +1004,48 @@ sub excel_initialize {
$cols_output += scalar(@Sections);
#
# Put the date in there too
- $excel_sheet->write($rows_output,$cols_output++,
+ $excel_sheet->write($rows_output++,$cols_output++,
'Compiled on '.localtime(time));
#
- $rows_output++;
+ $cols_output = 0;
+ $excel_sheet->write($rows_output++,$cols_output++,$datadescription);
+ #
+ if ($data eq 'tries' || $data eq 'scores') {
+ $rows_output++;
+ }
#
# Add the student headers
$cols_output = 0;
foreach my $field (&get_student_fields_to_show()) {
$excel_sheet->write($rows_output,$cols_output++,$field);
}
- #
- # Add the Sequence Headers
- foreach my $seq (&get_sequences_to_show) {
- $excel_sheet->write($rows_output,$cols_output,$seq->{'title'});
- if ($show eq 'totals') {
+ my $row_offset = 0;
+ if ($data eq 'tries' || $data eq 'scores') {
+ $row_offset = -1;
+ }
+ #
+ # Add the remaining column headers
+ foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+ $excel_sheet->write($rows_output+$row_offset,
+ $cols_output,$seq->{'title'});
+ if ($data eq 'tries' || $data eq 'scores') {
+ foreach my $res (@{$seq->{'contents'}}) {
+ next if ($res->{'type'} ne 'assessment');
+ if (scalar(@{$res->{'parts'}}) > 1) {
+ foreach my $part (@{$res->{'parts'}}) {
+ $excel_sheet->write($rows_output,
+ $cols_output++,
+ $res->{'title'}.' part '.$part);
+ }
+ } else {
+ $excel_sheet->write($rows_output,
+ $cols_output++,
+ $res->{'title'});
+ }
+ }
+ $excel_sheet->write($rows_output,$cols_output++,'score');
+ $excel_sheet->write($rows_output,$cols_output++,'maximum');
+ } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
$excel_sheet->write($rows_output+1,$cols_output,'score');
$excel_sheet->write($rows_output+1,$cols_output+1,'maximum');
$cols_output += 2;
@@ -746,12 +1055,54 @@ sub excel_initialize {
}
#
# Bookkeeping
- if ($show eq 'totals') {
+ if ($data eq 'sum and total' || $data eq 'parts correct total') {
$rows_output += 2;
} else {
$rows_output += 1;
}
#
+ # Output a row for MAX
+ $cols_output = 0;
+ foreach my $field (&get_student_fields_to_show()) {
+ if ($field eq 'username' || $field eq 'fullname' ||
+ $field eq 'id') {
+ $excel_sheet->write($rows_output,$cols_output++,'Maximum');
+ } else {
+ $excel_sheet->write($rows_output,$cols_output++,'');
+ }
+ }
+ #
+ # Add the maximums for each sequence or assessment
+ foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+ my $weight;
+ my $max = 0;
+ foreach my $resource (@{$seq->{'contents'}}) {
+ next if ($resource->{'type'} ne 'assessment');
+ foreach my $part (@{$resource->{'parts'}}) {
+ $weight = 1;
+ if ($base eq 'scores') {
+ $weight = &Apache::lonnet::EXT
+ ('resource.'.$part.'.weight',$resource->{'symb'},
+ undef,undef,undef);
+ if (!defined($weight) || ($weight eq '')) {
+ $weight=1;
+ }
+ }
+ if ($data eq 'scores') {
+ $excel_sheet->write($rows_output,$cols_output++,$weight);
+ } elsif ($data eq 'tries') {
+ $excel_sheet->write($rows_output,$cols_output++,'');
+ }
+ $max += $weight;
+ }
+ }
+ if (! ($data eq 'sum only' || $data eq 'parts correct')) {
+ $excel_sheet->write($rows_output,$cols_output++,'');
+ }
+ $excel_sheet->write($rows_output,$cols_output++,$max);
+ }
+ $rows_output++;
+ #
# Let the user know what we are doing
my $studentcount = scalar(@Apache::lonstatistics::Students);
$r->print("
Compiling Excel spreadsheet for ".
@@ -770,6 +1121,7 @@ sub excel_initialize {
sub excel_outputstudent {
my ($r,$student) = @_;
+ return if ($request_aborted);
return if (! defined($excel_sheet));
$cols_output=0;
#
@@ -790,14 +1142,28 @@ sub excel_outputstudent {
}
#
# Write out sequence scores and totals data
- foreach my $seq (&get_sequences_to_show) {
- my ($performance,$score,$seq_max) =
- &StudentPerformanceOnSequence($student,\%StudentsData,
- $seq,'no');
- if ($show eq 'totals' || $show eq 'scores') {
+ foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+ my ($performance,$performance_length,$score,$seq_max,$rawdata);
+ if ($base eq 'tries') {
+ ($performance,$performance_length,$score,$seq_max,$rawdata) =
+ &StudentTriesOnSequence($student,\%StudentsData,
+ $seq,'no');
+ } else {
+ ($performance,$performance_length,$score,$seq_max,$rawdata) =
+ &StudentPerformanceOnSequence($student,\%StudentsData,
+ $seq,'no');
+ }
+ if ($data eq 'tries' || $data eq 'scores') {
+ foreach my $value (@$rawdata) {
+ $excel_sheet->write($rows_output,$cols_output++,$value);
+ }
+ $excel_sheet->write($rows_output,$cols_output++,$score);
+ $excel_sheet->write($rows_output,$cols_output++,$seq_max);
+ } elsif ($data eq 'sum and total' || $data eq 'sum only' ||
+ $data eq 'parts correct' || $data eq 'parts correct total') {
$excel_sheet->write($rows_output,$cols_output++,$score);
}
- if ($show eq 'totals') {
+ if ($data eq 'sum and total' || $data eq 'parts correct total') {
$excel_sheet->write($rows_output,$cols_output++,$seq_max);
}
}
@@ -813,6 +1179,7 @@ sub excel_outputstudent {
sub excel_finish {
my ($r) = @_;
+ return if ($request_aborted);
return if (! defined($excel_sheet));
#
# Write the excel file
@@ -851,18 +1218,173 @@ sub excel_finish {
#######################################################
{
+my $outputfile;
+my $filename;
+my $request_aborted;
+my %prog_state; # progress window state
+
sub csv_initialize{
my ($r) = @_;
- $r->print("