--- loncom/interface/statistics/lonstudentsubmissions.pm	2004/10/08 16:40:54	1.25
+++ loncom/interface/statistics/lonstudentsubmissions.pm	2012/05/12 03:52:02	1.68.2.1
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonstudentsubmissions.pm,v 1.25 2004/10/08 16:40:54 matthew Exp $
+# $Id: lonstudentsubmissions.pm,v 1.68.2.1 2012/05/12 03:52:02 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -27,16 +27,20 @@
 package Apache::lonstudentsubmissions;
 
 use strict;
-use Apache::lonnet();
+use Apache::lonnet;
 use Apache::loncommon();
 use Apache::lonhtmlcommon();
 use Apache::loncoursedata();
 use Apache::lonstatistics;
 use Apache::lonlocal;
 use Apache::lonstathelpers;
+use Apache::lonmsgdisplay();
 use HTML::Entities();
 use Time::Local();
 use Spreadsheet::WriteExcel();
+use lib '/home/httpd/lib/perl/';
+use LONCAPA;
+  
 
 my @SubmitButtons = ({ name => 'SelectAnother',
                        text => 'Choose a different Problem' },
@@ -58,21 +62,28 @@ sub BuildStudentSubmissionsPage {
     #
     &Apache::lonstatistics::PrepareClasslist();
     #
+    $r->print( &Apache::lonhtmlcommon::breadcrumbs('Student Submission Reports'));
     $r->print(&CreateInterface());
     #
     my @Students = @Apache::lonstatistics::Students;
     #
     if (@Students < 1) {
-        $r->print('<h2>There are no students in the sections selected</h2>');
+        $r->print('<div class="LC_warning">'
+                 .&mt('There are no students in the sections selected.')
+                 .'</div>');
     }
     #
     my @CacheButtonHTML = 
         &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status',
-                                   '<h3>'.&mt('Loading student data').'</h3>');
+                                   '<div class="LC_info">'.&mt('Loading student data...').'</div>');
     $r->rflush();
     #
-    if (exists($ENV{'form.problemchoice'}) && 
-        ! exists($ENV{'form.SelectAnother'})) {
+    my %anoncounter =
+         &Apache::lonnet::dump('nohist_anonsurveys',
+                        $env{'course.'.$env{'request.course.id'}.'.domain'},
+                        $env{'course.'.$env{'request.course.id'}.'.num'});
+    if (exists($env{'form.problemchoice'}) && 
+        ! exists($env{'form.SelectAnother'})) {
         foreach my $button (@SubmitButtons) {
             if ($button->{'name'} eq 'break') {
                 $r->print("<br />\n");
@@ -92,44 +103,120 @@ sub BuildStudentSubmissionsPage {
         # Determine which problems we are to analyze
         my @Symbs = 
             &Apache::lonstathelpers::get_selected_symbs('problemchoice');
-        foreach my $selected (@Symbs) {
-            $r->print('<input type="hidden" name="problemchoice" value="'.
-                      $selected.'" />'.$/);
+
+        # If there are multi-part problems with anonymous survey and named
+        # parts check if named was picked for display.
+        #
+        my %mixed_named; 
+        foreach my $envkey (%env) {
+            if ($envkey =~ /^form\.mixed_(\d+:\d+)$/) {
+                my $item = $1; 
+                if ($env{$envkey} =~ /^symb_(.+)$/) {
+                    my $symb = &unescape($1);
+                    if (ref($mixed_named{$symb}) eq 'ARRAY') {
+                        push(@{$mixed_named{$symb}},$item);
+                    } else {
+                        @{$mixed_named{$symb}} = ($item);
+                    }
+                }
+            }
         }
         #
         # Get resource objects
         my $navmap = Apache::lonnavmaps::navmap->new();
         if (!defined($navmap)) {
-            $r->print('<h1>'.&mt("Internal error").'</h1>');
+            foreach my $selected (@Symbs) {
+                $r->print('<input type="hidden" name="problemchoice" value="'.
+                          &escape($selected).'" />'.$/);
+                if (ref($mixed_named{$selected}) eq 'ARRAY') {
+                    foreach my $item (@{$mixed_named{$selected}}) {
+                        $r->print('<input type="hidden" name="mixed_'.$item.'" value="'.&escape($selected).'" />'.$/);
+                    }
+                }
+            }
+            $r->print('<div class="LC_error">'.&mt("Internal error").'</div>');
             return;
         }
         my %already_seen;
-        my @Problems;
+        my (@Problems,@anonProbs,@namedProbs,$show_named);
         foreach my $symb (@Symbs) {
             my $resource = $navmap->getBySymb($symb);
-            push(@Problems,$resource);
+            my ($hasanon,$hasnamed);
+            if (ref($resource)) {
+                foreach my $partid (@{$resource->parts}) {
+                    if (($anoncounter{$symb."\0".$partid}) || ($resource->is_anonsurvey($partid))) {
+                        unless (exists($mixed_named{$symb})) {
+                            $hasanon = 1;
+                        }
+                    } else {
+                        $hasnamed = 1;
+                    }
+                }
+                if ($hasanon) {
+                    push(@anonProbs,$resource);
+                } elsif ($hasnamed) {
+                    push(@namedProbs,$resource);
+                }
+            }
+        }
+        if (@namedProbs > 0) {
+            @Problems = @namedProbs;
+            $show_named = 1;
+        } elsif (@anonProbs > 0) {
+            @Problems = @anonProbs;
+        } 
+        foreach my $selected (@Symbs) {
+            $r->print('<input type="hidden" name="problemchoice" value="'.
+                      &escape($selected).'" />'.$/);
+            if (ref($mixed_named{$selected}) eq 'ARRAY') {
+                foreach my $item (@{$mixed_named{$selected}}) {
+                    $r->print('<input type="hidden" name="mixed_'.$item.'" value="'.&escape($selected).'" />'.$/);
+                }
+            }
+        }
+        # If these are to be anonymized, do a random shuffle of @Students. 
+        unless ($show_named) {
+            &array_shuffle(\@Students);
+        }
+        #
+
+        my $threshold = $env{'course.'.$env{'request.course.id'}.'.internal.anonsurvey_threshold'};
+        if ($threshold eq '') {
+            my %domconfig =
+                &Apache::lonnet::get_dom('configuration',['coursedefaults'],
+                                        $env{'course.'.$env{'request.course.id'}.'.domain'});
+            if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
+                $threshold = $domconfig{'coursedefaults'}{'anonsurvey_threshold'};
+                if ($threshold eq '') {
+                    $threshold = 10;
+                }
+            } else {
+                $threshold = 10;
+            }
         }
-        # 
+        $r->print('<p>'.
+                  &Apache::lonstatistics::section_and_enrollment_description().
+                  '</p>');
         if (! scalar(@Problems) || ! defined($Problems[0])) {
-            $r->print('resource is undefined');
+            $r->print(&mt('resource is undefined'));
+        } elsif (!$show_named && @Students < $threshold) {
+            $r->print(&mt('The number of students matching the selection criteria is too few for display of submission data for anonymous surveys.').'<br />'.&mt('There must be at least [quant,_1,student].',$threshold).' '.&mt('Contact a Domain Coordinator if you need the threshold to be changed for this course.'));
         } else {
             if (scalar(@Problems) == 1) {
                 my $resource = $Problems[0];
                 $r->print('<h1>'.$resource->title.'</h1>');
                 $r->print('<h3>'.$resource->src.'</h3>');
-                if ($ENV{'form.renderprob'} eq 'true') {
-                    $r->print(
-                              &Apache::lonstathelpers::render_resource({src => $resource->src})
-                              );
+                if ($env{'form.renderprob'} eq 'true') {
+                    $r->print(&Apache::lonstathelpers::render_resource($resource));
                     $r->rflush();
                 }
             }
-            if ($ENV{'form.output'} eq 'excel') {
-                &prepare_excel_output($r,\@Problems,\@Students);
-            } elsif ($ENV{'form.output'} eq 'csv') {
-                &prepare_csv_output($r,\@Problems,\@Students);
+            if ($env{'form.output'} eq 'excel') {
+                &prepare_excel_output($r,\@Problems,\@Students,\%anoncounter,$show_named);
+            } elsif ($env{'form.output'} eq 'csv') {
+                &prepare_csv_output($r,\@Problems,\@Students,\%anoncounter,$show_named);
             } else {
-                &prepare_html_output($r,\@Problems,\@Students);
+                &prepare_html_output($r,\@Problems,\@Students,\%anoncounter,$show_named);
             }
         }
         $r->print('<hr />');
@@ -138,14 +225,80 @@ sub BuildStudentSubmissionsPage {
                   &mt('Prepare Report').'" />');
         $r->print('&nbsp;'x5);
         $r->print('<p>'.
-                  &mt('Computing correct answers greatly increasese the amount of time required to prepare a report.').
+                  &mt('Computing correct answers greatly increases the amount of time required to prepare a report.').
                   '</p>');
         $r->print('<p>'.
-                  &mt('please select problems and use the <b>Prepare Report</b> button to continue.').
+                  &mt('Please select problems and use the [_1]Prepare Report[_2] button to continue.','<b>','</b>').
                   '</p>');
         $r->print(&Apache::lonstathelpers::MultipleProblemSelector
-                  (undef,'problemchoice','Statistics'));
+                  (undef,'problemchoice','Statistics',\%anoncounter));
+    }
+}
+
+sub array_shuffle {
+    my $array = shift;
+    return unless (ref($array) eq 'ARRAY');
+    my $i = scalar(@$array);
+    my $j;
+    foreach my $item (@$array) {
+        --$i;
+        $j = int(rand($i+1));
+        next if($i == $j);
+        @$array [$i,$j] = @$array[$j,$i];
+    }
+    return @$array;
+}
+
+##
+## get_extra_response_headers
+##
+sub get_extra_response_headers {
+    my ($show_named) = @_;
+    my @extra_resp_headers;
+    if ($env{'form.correctans'} eq 'true') {
+        push(@extra_resp_headers,'Correct');
+    }
+    if ($show_named) { 
+        if ($env{'form.prob_status'} eq 'true') {
+            push(@extra_resp_headers,'Award Detail'); 
+            push(@extra_resp_headers,'Time');
+            push(@extra_resp_headers,'Attempt');
+            push(@extra_resp_headers,'Awarded');
+        }
     }
+    return @extra_resp_headers;
+}
+
+##
+## get_headers:
+##     return the proper headers for the given response 
+sub get_headers {
+    my ($prob,$partid,$respid,$resptype,$analysis,$output,$purpose,
+        @basic_headers) = @_;
+    my @headers;
+    if ($resptype eq 'essay' && $purpose eq 'display' &&
+        ($output eq 'html')) {# || scalar(@{$prob->parts})!=1)) {
+        @headers = ();
+    } elsif ($resptype =~ /^(option|match|rank)$/) {
+        my $prefix = '_';
+        if ($purpose eq 'display') {
+            $prefix = '';
+        }
+        my @foils = 
+            map { 
+                $prefix.$_; 
+            } sort(keys(%{$analysis->{$partid.'.'.$respid}->{'_Foils'}}));
+        if (scalar(@basic_headers) && $basic_headers[0] eq 'Correct') {
+            @foils = map { ($_ , $_.' Correct') } @foils;
+            shift(@basic_headers);  # Get rid of 'Correct'
+        }
+        @headers = (@foils,@basic_headers);
+    } elsif (lc($resptype) eq 'task') {
+        @headers = ('Grader','Status',@basic_headers,'Submission');
+    } else {
+        @headers = ('Submission',@basic_headers);
+    }
+    return @headers;
 }
 
 #########################################################
@@ -156,7 +309,7 @@ sub BuildStudentSubmissionsPage {
 #########################################################
 #########################################################
 sub prepare_html_output {
-    my ($r,$problems,$students) = @_;
+    my ($r,$problems,$students,$anoncounter,$show_named) = @_;
     my $c = $r->connection();
     #
     # Set a flag for the case when there is just one problem
@@ -167,67 +320,81 @@ sub prepare_html_output {
     }
     #
     # Compute the number of columns per response
-    my @response_headers = ('Submission');
-    if ($ENV{'form.correctans'} eq 'true') {
-        push(@response_headers,'Correct');
-    } 
-    if ($ENV{'form.prob_status'} eq 'true') {
-        push(@response_headers,'Award Detail'); 
-        push(@response_headers,'Time');
-        push(@response_headers,'Attempt');
-        push(@response_headers,'Awarded');
-    }
-    my $response_multiplier = scalar(@response_headers);
+    my @extra_resp_headers = &get_extra_response_headers($show_named);
     #
     # Create the table header
-    my @student_columns = ('username','domain','id');
-    #
+    my @student_columns = &get_student_columns($show_named);
     my %headers;
     my $student_column_count = scalar(@student_columns);
     $headers{'problem'} = qq{<th colspan="$student_column_count">\&nbsp;</th>};
-    foreach (@student_columns) {
-        $headers{'student'}.= '<th>'.ucfirst($_).'</th>';
+    foreach my $field (@student_columns) {
+        $headers{'student'}.= '<th>'.&mt(ucfirst($field)).'</th>';
     }
     #
     # we put the headers into the %headers hash
-    my $total_col = scalar(@student_columns);
+    my $total_col = $student_column_count;
     my $nonempty_part_headers = 0;
+    #
+    my %problem_analysis;
     foreach my $prob (@$problems) {
+        my %analysis = &Apache::lonstathelpers::get_problem_data($prob->src);
+        $problem_analysis{$prob->src}=\%analysis;
+        my $symb = $prob->symb();
+        #
         my $prob_span = 0;
         my $single_part = 0;
         if (scalar(@{$prob->parts}) == 1) {
             $single_part = 1;
         }
+        my $shown_parts = 0;
         foreach my $partid (@{$prob->parts}) {
+            if (($prob->is_anonsurvey($partid)) || ($anoncounter->{$symb."\0".$partid})) {
+                next if ($show_named);
+            } else {
+                next unless ($show_named);
+            }
+            $shown_parts ++;
             my $part_span = 0;
             my $responses = [$prob->responseIds($partid)];
             my $resptypes = [$prob->responseType($partid)];
             for (my $i=0;$i<scalar(@$responses);$i++) {
-                if ($resptypes->[$i] eq 'essay') {
-                    # do something clever, like shut up.
-                } else {
-                    $total_col += scalar(@response_headers);
+                my $respid = $responses->[$i];
+                my @headers = &get_headers($prob,$partid,$respid,
+                                           $resptypes->[$i],
+                                           $problem_analysis{$prob->src},
+                                           'html','display',
+                                           @extra_resp_headers);
+                if (scalar(@headers)>0) {
+                    $total_col += scalar(@headers);
+                    $part_span += scalar(@headers);
                     $headers{'response'} .=
-                        '<th colspan="'.scalar(@response_headers).'">'.
+                        '<th colspan="'.scalar(@headers).'">'.
                         &mt('Response [_1]',$responses->[$i]).'</th>';
-                    $headers{'student'}.= '<th>'.join('</th><th>',
-                                                      @response_headers).
-                                                          '</th>';
-                    $part_span += scalar(@response_headers);
+                    $headers{'student'}.= '<th><span class="LC_nobreak">'.
+                                          join('</span></th><th><span class="LC_nobreak">',
+                                                      @headers).
+                                                          '</span></th>';
                 }
             }
+            if ($part_span == 0) {
+                next;
+            }
             if (! $single_part) {
                 my $tmpname = $partid;
                 if ($partid =~/^\d+$/) {
                     $tmpname = $prob->part_display($partid);
                 }
+                if ($tmpname !~ /^part/) {
+                    $tmpname = 'Part '.$tmpname;
+                }
                 $headers{'part'} .= qq{<th colspan="$part_span">$tmpname</th>};
                 $nonempty_part_headers = 1;
             } else {
-                $headers{'part'} .= qq{<th colspan="$part_span">&nbsp</th>};
+                $headers{'part'} .= qq{<th colspan="$part_span">&nbsp;</th>};
             }
             $prob_span += $part_span;
         }
+        next if (!$shown_parts);
         my $title = $prob->compTitle;
         if ($prob_span > 0) {
             $headers{'problem'}.= qq{<th colspan="$prob_span">$title</th>};
@@ -245,7 +412,8 @@ sub prepare_html_output {
             qq{<th colspan="$student_column_count">\&nbsp;</th>}.
             $headers{'response'};
     }
-    my $full_header = $/.'<table>'.$/;
+    #my $full_header = $/.'<table>'.$/;
+    my $full_header = $/.&Apache::loncommon::start_data_table().$/;
     $full_header .= '<tr align="left">'.$headers{'problem'}.'</tr>'.$/;
     if ($nonempty_part_headers) {
         $full_header .= '<tr align="left">'.$headers{'part'}.'</tr>'.$/;
@@ -256,65 +424,99 @@ sub prepare_html_output {
     # Main loop
     my $count;
     $r->print($/.$full_header.$/);
-    my $row_class = 'odd';   # css 
     foreach my $student (@$students) {
         my $student_row_data;
         if ($count++ >= 30) {
-            $r->print('</table>'.$/.$full_header.$/);
+            $r->print(&Apache::loncommon::end_data_table().$/.$full_header.$/);
             $count = 0;
         }
         last if ($c->aborted());
-        foreach my $field (@student_columns) {
-            $student_row_data .= 
-                '<td valign="top">'.$student->{$field}.'</td>';
+        if ($show_named) {
+            foreach my $field (@student_columns) {
+                $student_row_data .= '<td valign="top">';
+                # handle comments like in lonstudentassessment.pm
+                if($field eq 'comments') {
+                    $student_row_data .= 
+                        '<a href="/adm/'.$student->{'domain'}.'/'.
+                        $student->{'username'}.'/'.'aboutme#coursecomment">'.&mt('Comments').'</a>';
+                } else {
+                    $student_row_data .= $student->{$field};
+                }
+                $student_row_data .= '</td>';
+            }
+        } else {
+            $student_row_data = '<td valign="top" colspan="'.$student_column_count.'">'.&mt('Anonymized').'</td>';
         }
         #
         # Figure out what it is we need to output for this student
         my @essays;
-        my %problem_data;
+        my %prob_data;
         my $maxrow;
         foreach my $prob (@$problems) {
             my $symb = $prob->symb;
-            $problem_data{$symb}={};
+            $prob_data{$symb}={};
             foreach my $partid (@{$prob->parts}) {
+                if (($prob->is_anonsurvey($partid)) || ($anoncounter->{$symb."\0".$partid})) {
+                    next if ($show_named);
+                } else {
+                    next unless ($show_named);
+                }
                 my @responses = $prob->responseIds($partid);
                 my @response_type = $prob->responseType($partid);
                 for (my $i=0;$i<=$#responses;$i++) {
-                    my $respid   = $responses[$i];
-                    my $resptype = $response_type[$i];
-                    my $width = scalar(@response_headers);
-                    $problem_data{$symb}->{$partid}->{$respid}={};
-                    my $resp_data = $problem_data{$symb}->{$partid}->{$respid};
-                    $resp_data->{'fake'} = qq{<td colspan="$width">&nbsp</td>};
+                    my $respid  = $responses[$i];
                     my $results = 
                         &Apache::loncoursedata::get_response_data_by_student
                         ($student,$prob->symb(),$respid);
+                    my $resptype = $response_type[$i];
+                    my @headers = &get_headers($prob,$partid,$respid,
+                                               $resptype,
+                                               $problem_analysis{$prob->src},
+                                               'html','normal',
+                                               @extra_resp_headers);
+                    my $width = scalar(@headers);
+                    next if ($width < 1);
+                    my $resp_data;
+                    $resp_data->{'fake'} = qq{<td colspan="$width">&nbsp;</td>};
                     if (! defined($results)) {
                         $results = [];
                     }
-                    #
+                    # 
                     if (scalar(@$results) > $maxrow && $resptype ne 'essay') {
                         $maxrow = scalar(@$results);
                     }
                     for (my $j=scalar(@$results)-1;$j>=0;$j--) {
-                        my $response = $results->[$j];
-                        if ($ENV{'form.all_sub'} ne 'true') {
+                        if ($env{'form.all_sub'} ne 'true') {
                             next if ($j ne scalar(@$results)-1);
                         }
+                        my $response = &hashify_response($results->[$j],
+                                                         $prob,
+                                                         $student,
+                                                         $partid,
+                                                         $respid);
                         if ($resptype eq 'essay') {
                             push(@essays,
-                                 &html_essay_results($student,
+                                 &html_essay_results(\@headers,
                                                      $prob,$partid,$respid,
                                                      $response,
                                                      $single_response).
                                  '</td>');
+			} elsif (lc($resptype) eq 'task') {
+			    my $results = 
+				&html_task_results(\@headers,
+						   $prob,$partid,$respid,
+						   $response,$resptype);
+			    if ($results) {
+				push(@{$resp_data->{'real'}},$results);
+			    }
                         } else {
                             push(@{$resp_data->{'real'}},
-                                 &html_results($student,
-                                               $prob,$partid,$respid,
-                                               $response,$resptype));
+                                 &html_non_essay_results(\@headers,
+                                                         $prob,$partid,$respid,
+                                                         $response,$resptype));
                         }
-                    } 
+                    }
+                    $prob_data{$prob->symb}->{$partid}->{$respid}=$resp_data;
                 } # end of $i loop
             } # end of partid loop
         } # end of prob loop
@@ -323,24 +525,18 @@ sub prepare_html_output {
         next if (! $maxrow && ! scalar(@essays));
         #
         # Go through the problem data and output a row.
-        if ($row_class eq 'even') {
-            $row_class = 'odd'; 
-        } else {
-            $row_class = 'even'; 
-        }
         my $printed_something;
         for (my $rows_output = 0;$rows_output<$maxrow;$rows_output++) {
             my $html;
             my $no_data = 1;
             foreach my $prob (@$problems) {
-                my $symb = $prob->symb;
                 foreach my $partid (@{$prob->parts}) {
                     my @responses     = $prob->responseIds($partid);
                     my @response_type = $prob->responseType($partid);
                     for (my $i=0;$i<=$#responses;$i++) {
                         my $respid   = $responses[$i];
                         my $resp_data = 
-                            $problem_data{$symb}->{$partid}->{$respid};
+                            $prob_data{$prob->symb}->{$partid}->{$respid};
                         next if ($response_type[$i] eq 'essay');
                         if (defined($resp_data->{'real'}->[$rows_output])) {
                             $html .= $resp_data->{'real'}->[$rows_output];
@@ -352,42 +548,72 @@ sub prepare_html_output {
                 }
             }
             if (! $no_data) {
-                $r->print(qq{<tr class="$row_class">$student_row_data$html</tr>}.$/);
+                $r->print(&Apache::loncommon::start_data_table_row().$student_row_data.$html.
+                          &Apache::loncommon::end_data_table_row().$/);
                 $printed_something=1;
             }
         }
         if (@essays) {
-            my $tr = qq{<tr class="$row_class">};
+            my $tr = &Apache::loncommon::start_data_table_row();
             my $td = qq{<td  valign="top" class="essay" colspan="$total_col">};
             if (! $printed_something) {
-                $r->print($tr.$student_row_data.'</tr>'.$/);
+                $r->print($tr.$student_row_data.&Apache::loncommon::end_data_table_row().$/);
             }
             $r->print($tr.$td.
                       join('</td></tr>'.$/.$tr.$td,@essays).'</td></tr>'.$/);
             undef(@essays);
         }
     } # end of student loop
+    $r->print(&Apache::loncommon::end_data_table().$/);
     return;
 }
 
+sub hashify_response {
+    my ($response,$prob,$student,$partid,$respid) =@_;
+    my $resp_hash = {};
+    if ($env{'form.correctans'} eq 'true') {
+        $resp_hash->{'Correct'} = 
+            &Apache::lonstathelpers::get_student_answer
+            ($prob,$student->{'username'},$student->{'domain'},
+             $partid,$respid);
+    }
+    $resp_hash->{'Submission'} = 
+        $response->[&Apache::loncoursedata::RDs_submission()];
+    $resp_hash->{'Time'} = 
+        $response->[&Apache::loncoursedata::RDs_timestamp()];
+    $resp_hash->{'Attempt'} =
+        $response->[&Apache::loncoursedata::RDs_tries()];
+    $resp_hash->{'Awarded'} = 
+        $response->[&Apache::loncoursedata::RDs_awarded()];
+    if ($prob->is_task()) {
+	$resp_hash->{'Grader'} = 
+	    $response->[&Apache::loncoursedata::RDs_response_eval_2()];
+	if ($resp_hash->{'Attempt'} eq '0') {
+	    $resp_hash->{'Attempt'} = '';
+	}
+	$resp_hash->{'Award Detail'} = 
+	    $response->[&Apache::loncoursedata::RDs_part_award()];
+	$resp_hash->{'Status'} = 
+	    $response->[&Apache::loncoursedata::RDs_response_eval()];
+    } else {
+	$resp_hash->{'Award Detail'} = 
+	    $response->[&Apache::loncoursedata::RDs_awarddetail()];
+    }
+
+    return $resp_hash;
+}
+
 #####################################################
 ##
 ##     HTML helper routines
 ##
 #####################################################
 sub html_essay_results {
-    my ($student,$prob,$partid,$respid,$response,$single_response)=@_;
-    #
-    my $submission =$response->[&Apache::loncoursedata::RDs_submission()];
-    $submission = &html_format_sub($submission,'essay');
-    #
-    my $correct = '';
-    if ($ENV{'form.correctans'} eq 'true') {
-        $correct = &Apache::lonstathelpers::analyze_problem_as_student
-            ($prob,$student->{'username'},$student->{'domain'},
-             $partid,$respid);
-        $correct = &html_format_sub($correct,'essay');
+    my ($headers,$prob,$partid,$respid,$response,$single_response)=@_;
+    if (! ref($headers) || ref($headers) ne 'ARRAY') {
+        return '';
     }
+    # Start of telling them what problem, part, and response
     my $Str;
     if (! $single_response) {
         my $id = $prob->compTitle;
@@ -397,95 +623,121 @@ sub html_essay_results {
         if (defined($respid)) {
             $id .= ' '.$respid;
         }
-        $Str .= '<nobr>'.$id.'</nobr>'.('&nbsp;'x4);
+        $Str .= '<span class="LC_nobreak">'.$id.'</span>'.('&nbsp;'x4);
     }
-    if ($ENV{'form.prob_status'} eq 'true') {
-        $Str .= '<nobr>';
-        $Str .= $response->[&Apache::loncoursedata::RDs_awarddetail()].
-            ('&nbsp;'x4);
-        $Str .= &mt('Attempt [_1]',
-                    $response->[&Apache::loncoursedata::RDs_tries()]).
-                        ('&nbsp;'x4);
-        $Str .= &Apache::lonlocal::locallocaltime
-            ($response->[&Apache::loncoursedata::RDs_timestamp()]).
-            ('&nbsp;'x4);
-        $Str .= &mt('Awarded: [_1]',
-                    $response->[&Apache::loncoursedata::RDs_awarded()]).
-                        ('&nbsp;'x4);
-        $Str .= '</nobr><br />';
+    #
+    shift(@$headers); # Get rid of the Submission header
+    my $correct = '';
+    if ($headers->[0] eq 'Correct') {
+        $correct = &html_format_essay_sub($response->{'Correct'});
+        shift(@$headers);
+    }
+    $Str .= '<span class="LC_nobreak">'.
+        join('',
+             map {
+                 ('&nbsp;'x4).&mt($_.': [_1]',$response->{$_});
+             } @$headers).'</span>';
+    if (@$headers || ! $single_response) {
+        $Str .= '<br />';
     }
-    $Str .= $submission;
+    $Str .= &html_format_essay_sub($response->{'Submission'});
+    #
     if (defined($correct) && $correct !~ /^\s*$/) {
         $Str .= '<hr /><b>'.&mt('Correct').'</b>'.$correct
     }
     return $Str;
 }
 
-sub html_results {
-    my ($student,$prob,$partid,$respid,$response,$resptype) = @_;
-    my $submission =$response->[&Apache::loncoursedata::RDs_submission()];
-    $submission = &html_format_sub($submission,$resptype);
-    my $correct = '';
-    if ($ENV{'form.correctans'} eq 'true') {
-        $correct = &Apache::lonstathelpers::analyze_problem_as_student
-            ($prob,$student->{'username'},$student->{'domain'},
-             $partid,$respid);
-        $correct = &html_format_sub($correct,$resptype);
-    }
-    my $Str;
-    $Str .= '<td valign="top">'.$submission.'</td>';
-    if ($ENV{'form.correctans'} eq 'true') {
-        $Str .= '<td valign="top">'.$correct.'</td>';
-    }
-    if ($ENV{'form.prob_status'} eq 'true') {
-        $Str .= '<td valign="top">'.
-            $response->[&Apache::loncoursedata::RDs_awarddetail()].
-            '</td>';
-        $Str .= '<td valign="top"><nobr>'.
-            &Apache::lonlocal::locallocaltime
-            ($response->[&Apache::loncoursedata::RDs_timestamp()]).
-            '</nobr></td>';
-        $Str .= '<td valign="top">'.
-            $response->[&Apache::loncoursedata::RDs_tries()].
-            '</td>';
-        $Str .= '<td valign="top">'.
-            $response->[&Apache::loncoursedata::RDs_awarded()].
-            '</td>';
+sub html_format_essay_sub {
+    my ($submission) = @_;
+    return '' if (! defined($submission) || $submission eq '');
+    $submission = &HTML::Entities::decode($submission);
+    $submission =~ s/\\\"/\"/g;
+    $submission =~ s/\\\'/\'/g;
+    $submission =~ s|\\r\\n|$/|g;
+    $submission = &HTML::Entities::encode($submission,'<>&"');
+    $submission =~ s|$/\s*$/|$/</p><p>$/|g;
+    $submission =~ s|\\||g;
+    $submission = '<p>'.$submission.'</p>';
+    return $submission;
+}
+
+sub html_task_results {
+    my ($headers,$prob,$partid,$respid,$response,$resptype) = @_;
+    if (! ref($headers) || ref($headers) ne 'ARRAY' || ! scalar(@$headers)) {
+        return '';
     }
-    return $Str;
+
+    my @values;
+    @values = map { $response->{$_}; } @$headers;
+
+    my $td = '<td valign="top">';
+    my $str = $td.join('</td>'.$td,@values).'</td>';
+    return $str;
 }
 
-sub html_format_sub {
-    my ($submission,$resptype) = @_;
+sub html_non_essay_results {
+    my ($headers,$prob,$partid,$respid,$response,$resptype) = @_;
+    if (! ref($headers) || ref($headers) ne 'ARRAY' || ! scalar(@$headers)) {
+        return '';
+    }
+    # 
+    my $submission = &HTML::Entities::decode(&unescape($response->{'Submission'})); 
     return '' if (! defined($submission) || $submission eq '');
-    $submission = &HTML::Entities::decode($submission);
     $submission =~ s/\\\"/\"/g;
     $submission =~ s/\\\'/\'/g;
-    if ($resptype eq 'essay') {
-        $submission =~ s|\\r\\n|$/|g;
-        $submission = &HTML::Entities::encode($submission,'<>&"');
-        $submission =~ s|$/\s*$/|$/</p><p>$/|g;
-        $submission =~ s|\\||g;
-        $submission = '<p>'.$submission.'</p>';
-    } elsif ($resptype eq 'radiobutton') {
+    if ($resptype eq 'radiobutton') {
         $submission = &HTML::Entities::encode($submission,'<>&"');
         $submission =~ s/=([^=])$//;
-    } elsif ($resptype =~ /^(option|match|rank)$/) {
-        $submission = 
-            '<ul class="sub_studentans">'.
-            '<li>'.join('</li><li>',
-                        map { &HTML::Entities::encode($_,'<>&"'); 
-                          } map { 
-                              &Apache::lonnet::unescape($_) ;
-                          } sort split('&',$submission)
-                        ).
-                        '</li><ul>';
+        $submission = '<span class="LC_nobreak">'.$submission.'</span>';
+    }
+    $response->{'Submission'} = $submission;
+    #
+    my @values;
+    if ($resptype =~ /^(option|match|rank)$/) {
+        my %submission = 
+            map { 
+                my ($foil,$value) = split('=',&unescape($_));
+                ($foil,$value);
+            } split('&',$response->{'Submission'});
+        my %correct;
+        if (exists($response->{'Correct'})) {
+            %correct = 
+                map { 
+                    my ($foil,$value)=split('=',&unescape($_));
+                    ($foil,$value);
+                } split('&',$response->{'Correct'});
+        }
+        #
+        foreach my $original_header (@$headers) {
+            if ($original_header =~ /^_/) {
+                # '_' denotes a foil column
+                my ($header) = ($original_header =~ m/^_(.*)$/);
+                my $option = '';
+                if ( my ($foil) = ($header =~ /(.*) Correct$/)) {
+                    if (exists($correct{$foil})) {
+                        $option = $correct{$foil};
+                    }
+                } elsif (exists($submission{$header})) {
+                    $option = $submission{$header};
+                }
+                push(@values,&HTML::Entities::encode($option));
+            } elsif ($original_header eq 'Time') {
+                push(@values,&Apache::lonlocal::locallocaltime($response->{$original_header}));
+            } else {
+                # A normal column
+                push(@values,$response->{$original_header});
+            }
+        }
     } else {
-        $submission = &HTML::Entities::encode($submission,'<>&"');
+        @values = map { $response->{$_}; } @$headers;
     }
-    return $submission;
+    my $td = '<td valign="top">';
+    my $str = $td.join('</td>'.$td,@values).'</td>';
+    return $str;
 }
 
+
 #########################################################
 #########################################################
 ##
@@ -494,66 +746,84 @@ sub html_format_sub {
 #########################################################
 #########################################################
 sub prepare_excel_output {
-    my ($r,$Problems,$Students) = @_;
+    my ($r,$Problems,$Students,$anoncounter,$show_named) = @_;
     my $c = $r->connection();
     #
     #
     # Determine the number of columns in the spreadsheet
     my $columncount = 3; # username, domain, id
-    my $response_multiplier = 1;
-    $response_multiplier ++   if ($ENV{'form.correctans'} eq 'true');
-    $response_multiplier += 4 if ($ENV{'form.prob_status'} eq 'true');
+    my @extra_resp_headers = &get_extra_response_headers($show_named);
     my $lastprob;
+    my %problem_analysis;
     foreach my $prob (@$Problems) {
-        $columncount += ($response_multiplier * $prob->countResponses);
+        my $symb = $prob->symb();
+        my %analysis = &Apache::lonstathelpers::get_problem_data($prob->src);
+        $problem_analysis{$prob->src}=\%analysis;
+        foreach my $partid (@{$prob->parts}) {
+            if (($prob->is_anonsurvey($partid)) || ($anoncounter->{$symb."\0".$partid})) {
+                next if ($show_named);
+            } else {
+                next unless ($show_named);
+            }
+
+            my $responses = [$prob->responseIds($partid)];
+            my $resptypes = [$prob->responseType($partid)];
+            for (my $i=0;$i<scalar(@$responses);$i++) {
+                my @headers = &get_headers($prob,$partid,$responses->[$i],
+                                           $resptypes->[$i],
+                                           $problem_analysis{$prob->src},
+                                           'excel','display',
+                                           @extra_resp_headers);
+                $columncount += scalar(@headers);
+            }
+        }
         last if ($columncount > 255);
         $lastprob = $prob;
     }
     if ($columncount > 255) {
-        $r->print('<h1>'.&mt('Unable to complete request').'</h1>'.$/.
-                  '<p>'.&mt('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.').'</p>'.$/.
-                  '<p>'.&mt('Consider selecting fewer problems to generate reports on, or reducing the number of items per problem.  Or use HTML or CSV output.').'</p>'.$/.
-                  '<p>'.&mt('The last problem that will fit in the current spreadsheet is [_1].',$lastprob->compTitle).'</p>');
+        $r->print('<p class="LC_error">'.&mt('Unable to complete request').'</p>'.$/.
+                  '<p class="LC_warning">'.&mt('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.').'</p>'.$/.
+                  '<p class="LC_warning">'.&mt('Consider selecting fewer problems to generate reports on, or reducing the number of items per problem.  Or use HTML or CSV output.').'</p>'.$/);
+        if (ref($lastprob)) {
+            $r->print('<p>'.&mt('The last problem that will fit in the current spreadsheet is [_1].',$lastprob->compTitle).'</p>');
+        }
         $r->rflush();
         return;
     }
     #
     # Print out a message telling them what we are doing
     if (scalar(@$Problems) > 1) {
-        $r->print('<h2>'.
+        $r->print('<p class="LC_info">'.
                   &mt('Preparing Excel spreadsheet of student responses to [_1] problems',
                       scalar(@$Problems)).
-                  '</h2>');
+                  '</p>');
     } else {
-        $r->print('<h2>'.
+        $r->print('<p class="LC_info">'.
                   &mt('Preparing Excel spreadsheet of student responses').
-                  '</h2>');
+                  '</p>');
     }
     $r->rflush();
     #
     # Create the excel spreadsheet
-    my $filename = '/prtspool/'.
-        $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
-        time.'_'.rand(1000000000).'.xls';
-    my $workbook  = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
-    if (! defined($workbook)) {
-        $r->log_error("Error creating excel spreadsheet $filename: $!");
-        $r->print('<p>'.&mt("Unable to create new Excel file.  ".
-                            "This error has been logged.  ".
-                            "Please alert your LON-CAPA administrator").
-                  '</p>');
-        return undef;
+    my ($workbook,$filename,$format) = 
+        &Apache::loncommon::create_workbook($r);
+    return if (! defined($workbook));
+
+    # Worksheet name
+    # The length of a worksheet name in Excel 95 is limited to 31 characters.
+    # Let's make sure to not exceed the maximum length in the translation files.
+    # Otherwise, no Excel file would be created.
+    my $worksheetname = &mt('Student Submission Data');
+    if (length($worksheetname) > 31) {
+        # nice way to cut off too long name
+        $worksheetname = substr($worksheetname,0,28,).'...';
     }
-    #
-    $workbook->set_tempdir('/home/httpd/perl/tmp');
-    #
-    my $format = &Apache::loncommon::define_excel_formats($workbook);
-    my $worksheet  = $workbook->addworksheet('Student Submission Data');
+    my $worksheet  = $workbook->addworksheet($worksheetname);
     #
     # Add headers to the worksheet
     my $rows_output = 0;
     $worksheet->write($rows_output++,0,
-                    $ENV{'course.'.$ENV{'request.course.id'}.'.description'},
+                    $env{'course.'.$env{'request.course.id'}.'.description'},
                       $format->{'h1'});
     $rows_output++;
     my $cols_output = 0;
@@ -561,92 +831,107 @@ sub prepare_excel_output {
     my $partid_row = $rows_output++;
     my $respid_row = $rows_output++;
     my $header_row = $rows_output++;
-    $worksheet->write($title_row ,0,'Problem Title',$format->{'bold'});
-    $worksheet->write($partid_row,0,'Part ID',$format->{'bold'});
-    $worksheet->write($respid_row,0,'Response ID',$format->{'bold'});
+    $worksheet->write($title_row ,0,&mt('Problem Title'),$format->{'bold'});
+    $worksheet->write($partid_row,0,&mt('Part ID'),$format->{'bold'});
+    $worksheet->write($respid_row,0,&mt('Response ID'),$format->{'bold'});
     # Student headers
-    my @StudentColumns = ('username','domain','id');
-    foreach (@StudentColumns) {
-        $worksheet->write($header_row,$cols_output++,ucfirst($_),
+    my @StudentColumns = &get_student_columns($show_named);
+    foreach my $field (@StudentColumns) {
+        $worksheet->write($header_row,$cols_output++,&mt(ucfirst($field)),
                           $format->{'bold'});
     }
     # Problem headers
+    my %start_col;
     foreach my $prob (@$Problems) {
         my $title = $prob->compTitle;
+        my $symb = $prob->symb();
         $worksheet->write($title_row,$cols_output,
                           $title,$format->{'h3'});
         foreach my $partid (@{$prob->parts}) {
+            if (($prob->is_anonsurvey($partid)) || ($anoncounter->{$symb."\0".$partid})) {
+                next if ($show_named);
+            } else {
+                next unless ($show_named);
+            }
             $worksheet->write($partid_row,$cols_output,
                               $prob->part_display($partid));
             my $responses = [$prob->responseIds($partid)];
             my $resptypes = [$prob->responseType($partid)];
             for (my $i=0;$i<scalar(@$responses);$i++) {
+                $start_col{$prob->symb}->{$partid}->{$responses->[$i]}=
+                    $cols_output;
                 $worksheet->write($respid_row,$cols_output,
                                   $resptypes->[$i].', '.$responses->[$i]);
-                $worksheet->write($header_row,$cols_output,'Submission');
-                $cols_output++;
-                if ($ENV{'form.correctans'} eq 'true') {
-                    $worksheet->write($header_row,$cols_output,'Correct');
-                    $cols_output++;
-                }
-                if ($ENV{'form.prob_status'} eq 'true') {
-                    $worksheet->write($header_row,$cols_output++,
-                                      'Award Detail');
-                    $worksheet->write($header_row,$cols_output++,'Attempt');
-                    $worksheet->write($header_row,$cols_output++,'Time');
-                    $worksheet->write($header_row,$cols_output++,'Awarded');
+                my @headers = &get_headers($prob,$partid,$responses->[$i],
+                                           $resptypes->[$i],
+                                           $problem_analysis{$prob->src},
+                                           'excel','display',
+                                           @extra_resp_headers);
+                foreach my $text (@headers) {
+                    if ($text eq 'Time') {
+                        $worksheet->set_column($cols_output,$cols_output,undef,
+                                               $format->{'date'});
+                    } 
+                    $worksheet->write($header_row,$cols_output++,$text);
                 }
             }
         }
     }
     #
     # Populate the worksheet with the student data
-    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
-        ($r,'Excel File Compilation Status',
-         'Excel File Compilation Progress', 
-         scalar(@$Students),'inline',undef,'Statistics','stats_status');
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,scalar(@$Students));
     my $max_row = $rows_output;
     foreach my $student (@$Students) {
         last if ($c->aborted());
         $cols_output = 0;
         my $student_row = $max_row;
-        foreach my $field (@StudentColumns) {
-            $worksheet->write($student_row,$cols_output++,
-                              $student->{$field});
-        }
-        my $last_student_col = $cols_output-1;
-        my $response_count;
         foreach my $prob (@$Problems) {
+            my $symb = $prob->symb();
             foreach my $partid (@{$prob->parts}) {
+                if (($prob->is_anonsurvey($partid)) || ($anoncounter->{$symb."\0".$partid})) {
+                    next if ($show_named);
+                } else {
+                    next unless ($show_named);
+                }
                 my @Response = $prob->responseIds($partid);
                 my @ResponseType = $prob->responseType($partid);
                 for (my $i=0;$i<=$#Response;$i++) {
-                    my $response_start_col = $last_student_col + 
-                        $response_count * $response_multiplier + 1;
-                    $response_count++;
                     my $respid   = $Response[$i];
                     my $resptype = $ResponseType[$i];
                     my $results = 
                         &Apache::loncoursedata::get_response_data_by_student
                         ($student,$prob->symb(),$respid);
+                    my @headers = &get_headers($prob,$partid,$respid,
+                                               $resptype,
+                                               $problem_analysis{$prob->src},
+                                               'excel','normal',
+                                               @extra_resp_headers);
+
                     if (! defined($results)) {
                         $results = [];
                     }
                     #
                     $rows_output = $student_row;
                     #
+                    my $response_start_col = $start_col{$prob->symb}->{$partid}->{$respid};
                     for (my $j=scalar(@$results)-1;$j>=0;$j--) {
                         $cols_output = $response_start_col;
-                        my $response = $results->[$j];
-                        if ($ENV{'form.all_sub'} ne 'true') {
+                        if ($env{'form.all_sub'} ne 'true') {
                             next if ($j ne scalar(@$results)-1);
                         }
-                        my $cols_output = &write_excel_row
-                            ($worksheet,
-                             $rows_output++,$cols_output,
-                             $response,$student,
-                             $prob,$partid,$respid,
-                             $format,$resptype);
+                        my $response = &hashify_response($results->[$j],
+                                                         $prob,
+                                                         $student,
+                                                         $partid,
+                                                         $respid);
+                        my @response_data = 
+                            &compile_response_data(\@headers,$response,
+                                                   $prob,$partid,$respid,
+                                                   $resptype,
+                                                   \&excel_format_item);
+                        $worksheet->write_row($rows_output++,$cols_output,
+                                              \@response_data);
+                        $cols_output+=scalar(@response_data);
                         if ($rows_output > $max_row) {
                             $max_row = $rows_output;
                         }
@@ -654,9 +939,24 @@ sub prepare_excel_output {
                 }
             }
         }
-        $rows_output++;
-        &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
-                                                 'last student');
+        # Prepend current student's user information to all rows  
+        for (my $row = $student_row;$row<$max_row;$row++) {
+            my $cols = 0;
+            foreach my $field (@StudentColumns) {
+                if ($show_named) {
+                    my $value = $student->{$field};
+                    if ($field eq 'comments') {
+                        $value = &Apache::lonmsgdisplay::retrieve_instructor_comments
+                                 ($student->{'username'},$student->{'domain'});
+                    }
+                    $worksheet->write($row,$cols++,$value);
+                } else {
+                    $worksheet->write($row,$cols++,
+                                      &mt('Anonymized'));
+                }
+            }
+        }
+        &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
     }
     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
     #
@@ -675,56 +975,83 @@ sub prepare_excel_output {
     return;
 }
 
-sub write_excel_row {
-    my ($worksheet,$row,$col,$response,$student,$prob,$partid,$respid,
-        $format,$resptype) = @_;
-    # 
-    my $submission =$response->[&Apache::loncoursedata::RDs_submission()];
-    $submission = &excel_format_response($submission,$resptype);
-    $worksheet->write($row,$col++,$submission);
-    if ($ENV{'form.correctans'} eq 'true') {
-        my $correct = &Apache::lonstathelpers::analyze_problem_as_student
-            ($prob,$student->{'username'},$student->{'domain'},
-             $partid,$respid);
-        $correct =&excel_format_response($correct,$resptype);
-        $worksheet->write($row,$col++,$correct);
+sub compile_response_data {
+    my ($headers,$response,$prob,$partid,$respid,$resptype,$format) = @_;
+    if (! ref($headers) || ref($headers) ne 'ARRAY' || ! scalar(@$headers)) {
+        return ();
+    }
+    if (ref($format) ne 'CODE') {
+        $format = sub { return $_[0]; };
+    }
+    #
+    my $submission = 
+        &HTML::Entities::decode
+        (&unescape($response->{'Submission'}));
+    if (!$prob->is_task()) {
+	return () if (! defined($submission) || $submission eq '');
     }
-    if ($ENV{'form.prob_status'} eq 'true') {
-        $worksheet->write
-            ($row,$col++,
-             $response->[&Apache::loncoursedata::RDs_awarddetail()]);
-        $worksheet->write
-            ($row,$col++,$response->[&Apache::loncoursedata::RDs_tries()]);
-        $worksheet->write
-            ($row,$col++,
-             &Apache::lonstathelpers::calc_serial
-             ($response->[&Apache::loncoursedata::RDs_timestamp()]),
-             $format->{'date'});
-        $worksheet->write
-            ($row,$col++,$response->[&Apache::loncoursedata::RDs_awarded()]);
-    }
-    return $col;
-}
-
-sub excel_format_response {
-    my ($answer,$responsetype) = @_;
-    if ($responsetype eq 'radiobutton') {
-        $answer =~ s/=([^=])$//;
-    } elsif ($responsetype =~ /^(option|match)$/) {
-        $answer = join("\n",
-                       map { 
-                           &Apache::lonnet::unescape($_) ;
-                       } sort split('&',$answer)
-                       );
-    } elsif ($responsetype eq 'string') {
-        $answer =~ s/\\(n|r)/\n/g;
-        $answer =~ s/(\s*$|^\s*)//g;
-        $answer =~ s/\\\'/\'/g;
+    $submission =~ s/\\\"/\"/g;
+    $submission =~ s/\\\'/\'/g;
+    if ($resptype eq 'radiobutton') {
+        $submission =~ s/=([^=])$//;
     }
-    if ($answer =~ m/^=/) {
-        $answer = ' '.$answer;
+    $response->{'Submission'} = $submission;
+    #
+    my @values;
+    if ($resptype =~ /^(option|match|rank)$/) {
+        my %submission = 
+            map { 
+                my ($foil,$value) = split('=',&unescape($_));
+                ($foil,$value);
+            } split('&',$response->{'Submission'});
+        my %correct;
+        if (exists($response->{'Correct'})) {
+            %correct = 
+                map { 
+                    my ($foil,$value)=split('=',&unescape($_));
+                    ($foil,$value);
+                } split('&',$response->{'Correct'});
+        }
+        #
+        foreach my $original_header (@$headers) {
+            if ($original_header =~ /^_/) {
+                # '_' denotes a foil column
+                my ($header) = ($original_header =~ m/^_(.*)$/);
+                my $option = '';
+                if ( my ($foil) = ($header =~ /(.*) Correct$/)) {
+                    if (exists($correct{$foil})) {
+                        $option = $correct{$foil};
+                    }
+                } elsif (exists($submission{$header})) {
+                    $option = $submission{$header};
+                }
+                push(@values,&{$format}($option,$header));
+            } else {
+                # A normal column
+                push(@values,&{$format}($response->{$original_header},
+                                        $original_header));
+            }
+        }
+    } else {
+        @values = map { &{$format}($response->{$_},$_); } @$headers;
     }
-    return $answer;
+    return @values;
+}
+
+sub excel_format_item {
+    my ($item,$type) = @_;
+    if ($type eq 'Time') {
+        $item = &Apache::lonstathelpers::calc_serial($item);
+    } else {
+        if ($item =~ m/^=/) {
+            $item = ' '.$item;
+        }
+        $item =~ s/\\r//g;
+        $item =~ s/\\n/\n/g;
+        $item =~ s/(\s*$|^\s*)//g;
+        $item =~ s/\\\'/\'/g;
+    }
+    return $item;
 }
 
 #########################################################
@@ -735,80 +1062,85 @@ sub excel_format_response {
 #########################################################
 #########################################################
 sub prepare_csv_output {
-    my ($r,$problems,$students) = @_;
+    my ($r,$problems,$students,$anoncounter,$show_named) = @_;
     my $c = $r->connection();
     #
-    $r->print('<h2>'.
-              &mt('Generating CSV report of student responses').'</h2>');
+    $r->print('<p class="LC_info">'.
+              &mt('Generating CSV report of student responses').'</p>');
     #
     # Progress window
-    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
-        ($r,'CSV File Compilation Status',
-         'CSV File Compilation Progress', 
-         scalar(@$students),'inline',undef,'Statistics','stats_status');
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,scalar(@$students));
     
     $r->rflush();
     #
     # Open a file
     my $outputfile;
     my $filename = '/prtspool/'.
-        $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
+        $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
             time.'_'.rand(1000000000).'.csv';
     unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
         $r->log_error("Couldn't open $filename for output $!");
-        $r->print("Problems occured in writing the csv file.  ".
-                  "This error has been logged.  ".
-                  "Please alert your LON-CAPA administrator.");
+        $r->print(
+            '<p class="LC_error">'
+           .&mt('Problems occurred in writing the CSV file.')
+           .' '.&mt('This error has been logged.')
+           .' '.&mt('Please alert your LON-CAPA administrator.')
+           .'</p>'
+        );
         $outputfile = undef;
     }
     #
     # Compute the number of columns per response
-    my @response_headers = ('Submission');
-    if ($ENV{'form.correctans'} eq 'true') {
-        push(@response_headers,'Correct');
-    } 
-    if ($ENV{'form.prob_status'} eq 'true') {
-        push(@response_headers,'Award Detail'); 
-        push(@response_headers,'Time');
-        push(@response_headers,'Attempt');
-        push(@response_headers,'Awarded');
-    }
-    my $response_multiplier = scalar(@response_headers);
+    my @extra_resp_headers = &get_extra_response_headers($show_named);
     #
     # Create the table header
-    my @student_columns = ('username','domain','id');
+    my @student_columns = &get_student_columns($show_named);
+    my $student_column_count = scalar(@student_columns);
     #
     my %headers;
     push(@{$headers{'student'}},@student_columns);
     # Pad for the student data
     foreach my $row ('problem','part','response') {
-        foreach (@student_columns) {
-            push(@{$headers{$row}},'');
-        }
+        $headers{$row}=[map {''} @student_columns];
     }
     #
     # we put the headers into the %headers hash
-    my $prob_start_idx = 0;
+    my %problem_analysis;
+    my %start_col;
+    my $max_column = $student_column_count;
     foreach my $prob (@$problems) {
-        $headers{'problem'}->[$prob_start_idx] = $prob->compTitle;
-        my $part_start_idx = $prob_start_idx;
+        my $symb = $prob->symb();
+        my %analysis = &Apache::lonstathelpers::get_problem_data($prob->src);
+        $problem_analysis{$prob->src}=\%analysis;
+        $headers{'problem'}->[$max_column] = $prob->compTitle;
         foreach my $partid (@{$prob->parts}) {
-            $headers{'part'}->[$part_start_idx] = $prob->part_display($partid);
+            if (($prob->is_anonsurvey($partid)) || ($anoncounter->{$symb."\0".$partid})) {
+                next if ($show_named);
+            } else {
+                next unless ($show_named);
+            }
+            $headers{'part'}->[$max_column] = $prob->part_display($partid);
             my $responses = [$prob->responseIds($partid)];
+            my $resptypes = [$prob->responseType($partid)];
             for (my $i=0;$i<scalar(@$responses);$i++) {
-                my $resp_idx = $prob_start_idx + $response_multiplier * $i;
-                $headers{'response'}->[$resp_idx]=
+                my @headers = &get_headers($prob,$partid,$responses->[$i],
+                                           $resptypes->[$i],
+                                           $problem_analysis{$prob->src},
+                                           'csv','display',
+                                           @extra_resp_headers);
+                $start_col{$prob->symb}->{$partid}->{$responses->[$i]}=
+                    $max_column;
+                $headers{'response'}->[$max_column]=
                     &mt('Response [_1]',$responses->[$i]);
-                for (my $j=0;$j<=$#response_headers;$j++) {
-                    $headers{'student'}->[$resp_idx+$j]=$response_headers[$j];
+                for (my $j=0;$j<=$#headers;$j++) {
+                    $headers{'student'}->[$max_column+$j]=$headers[$j];
                 }
+                $max_column += scalar(@headers);
             }
-            $part_start_idx += scalar(@$responses)*$response_multiplier;
         }
-        $prob_start_idx += $prob->countResponses * $response_multiplier;
     }
     foreach my $row ('problem','part','response','student') {
-        print $outputfile '"'.join('","',map { ''; } @student_columns).'","'.
+        print $outputfile '"'.
             join('","',
                  map { 
                      &Apache::loncommon::csv_translate($_); 
@@ -817,16 +1149,25 @@ sub prepare_csv_output {
     #
     # Main loop
     foreach my $student (@$students) {
+        last if ($c->aborted());
         my @rows;
-        my $prob_start_idx = 0;
         foreach my $prob (@$problems) {
-            my $part_start_idx = 0;
+            my $symb = $prob->symb;
             foreach my $partid (@{$prob->parts}) {
+                if (($prob->is_anonsurvey($partid)) || ($anoncounter->{$symb."\0".$partid})) {
+                    next if ($show_named); 
+                } else {
+                    next unless ($show_named);
+                }
                 my @responses = $prob->responseIds($partid);
                 my @response_type = $prob->responseType($partid);
                 for (my $i=0;$i<=$#responses;$i++) {
-                    my $resp_start_idx = $response_multiplier * $i;
                     my $respid   = $responses[$i];
+                    my $resptype = $response_type[$i];
+                    my @headers = &get_headers($prob,$partid,$respid,$resptype,
+                                               $problem_analysis{$prob->src},
+                                               'csv','normal',
+                                               @extra_resp_headers);
                     my $results = 
                         &Apache::loncoursedata::get_response_data_by_student
                         ($student,$prob->symb(),$respid);
@@ -834,30 +1175,43 @@ sub prepare_csv_output {
                         $results = [];
                     }
                     for (my $j=0; $j<scalar(@$results);$j++) {
-                        if ($ENV{'form.all_sub'} ne 'true') {
+                        if ($env{'form.all_sub'} ne 'true') {
                             next if ($j != 0);
                         }
                         my $idx = scalar(@$results) - $j - 1;
-                        my $response = $results->[$idx];
-                        my @data = &compile_response_data($response,$student,
+                        my $response = &hashify_response($results->[$idx],
+                                                         $prob,$student,
+                                                         $partid,$respid);
+                        my @data = &compile_response_data(\@headers,$response,
                                                           $prob,$partid,
-                                                          $respid);
+                                                          $respid,$resptype,
+                                                          \&csv_format_item);
+                        my $resp_start_idx =
+                            $start_col{$prob->symb}->{$partid}->{$respid};
                         for (my $k=0;$k<=$#data;$k++) {
-                            $rows[$j]->[$prob_start_idx + $part_start_idx +
-                                        $resp_start_idx + $k] = $data[$k];
+                            $rows[$j]->[$resp_start_idx + $k] = $data[$k];
                         }
                     }
                 }
-                $part_start_idx += scalar(@responses)*$response_multiplier;
             }
-            $prob_start_idx += $prob->countResponses * $response_multiplier;
         }
         foreach my $row (@rows) {
-            print $outputfile '"'.join('","',
-                                       map { $student->{$_}; }
-                                       @student_columns).'"';
-                                           
-            for (my $i=0;$i<$prob_start_idx;$i++) {
+            my $student_row_data = '';
+            if ($show_named) {
+                foreach my $field (@student_columns) {
+                    my $value = $student->{$field};
+                    if ($field eq 'comments') {
+                        $value = &Apache::lonmsgdisplay::retrieve_instructor_comments
+                                 ($student->{'username'},$student->{'domain'});
+                    }
+                    $student_row_data .= '"'.&Apache::loncommon::csv_translate($value).'",';
+                }
+                $student_row_data =~ s/,$//;
+            } else {
+                $student_row_data = '"'.&mt('Anonymized').'"';
+            }
+            print $outputfile $student_row_data;
+            for (my $i=$student_column_count;$i<$max_column;$i++) {
                 my $value = &Apache::loncommon::csv_translate($row->[$i]);
                 $value ||='';
                 print $outputfile ',"'.$value.'"';
@@ -865,39 +1219,27 @@ sub prepare_csv_output {
             print $outputfile $/;
         }
         undef(@rows);
-        &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
-                                                 'last student');
+        &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
     }
     close($outputfile);
     #
     # Close the progress window
     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
     #
-    # Tell the user where to get their csv file
+    # Tell the user where to get their CSV file
     $r->print('<br />'.
-              '<a href="'.$filename.'">'.&mt('Your csv file.').'</a>'."\n");
+              '<a href="'.$filename.'">'.&mt('Your CSV file.').'</a>'."\n");
     $r->rflush();
     return;
 }
 
-sub compile_response_data {
-    my ($response,$student,$prob,$partid,$respid) = @_;
-    my @rowdata;
-    push(@rowdata,$response->[&Apache::loncoursedata::RDs_submission()]);
-    if ($ENV{'form.correctans'} eq 'true') {
-        my $correct = &Apache::lonstathelpers::analyze_problem_as_student
-            ($prob,$student->{'username'},$student->{'domain'},
-             $partid,$respid);
-        push(@rowdata,$correct);
-    }
-    if ($ENV{'form.prob_status'}) {
-        push(@rowdata,$response->[&Apache::loncoursedata::RDs_awarddetail()]);
-        push(@rowdata,&Apache::lonlocal::locallocaltime
-             ($response->[&Apache::loncoursedata::RDs_timestamp()]));
-        push(@rowdata,$response->[&Apache::loncoursedata::RDs_tries()]);
-        push(@rowdata,$response->[&Apache::loncoursedata::RDs_awarded()]);
+sub csv_format_item {
+    my ($item,$type) = @_;
+    if ($type eq 'Time') {
+        $item = localtime($item);
     }
-    return @rowdata;
+    $item =&Apache::loncommon::csv_translate($item); 
+    return $item;
 }
 
 #########################################################
@@ -913,8 +1255,8 @@ sub CreateInterface {
     my $output_selector = $/.'<select name="output">'.$/;
     foreach ('HTML','Excel','CSV') {
         $output_selector .= '    <option value="'.lc($_).'"';
-        if ($ENV{'form.output'} eq lc($_)) {
-            $output_selector .= ' selected ';
+        if ($env{'form.output'} eq lc($_)) {
+            $output_selector .= ' selected="selected"';
         }
         $output_selector .='>'.&mt($_).'</option>'.$/;
     } 
@@ -922,78 +1264,102 @@ sub CreateInterface {
     ##
     ## Environment variable initialization
     my $Str = '';
-    $Str .= &Apache::lonhtmlcommon::breadcrumbs
-        (undef,'Student Submission Reports');
-    $Str .= '<p>';
-    $Str .= '<table cellspacing="5">'."\n";
-    $Str .= '<tr>';
+    $Str .= '<br />';
+    $Str .= &Apache::loncommon::start_data_table();
+    $Str .= &Apache::loncommon::start_data_table_header_row();
     $Str .= '<th>'.&mt('Sections').'</th>';
-    $Str .= '<th>'.&mt('Enrollment Status').'</th>';
-    $Str .= '<th>'.&mt('Output as [_1]',$output_selector).'</th>';
-    $Str .= '</tr>'."\n";
+    $Str .= '<th>'.&mt('Groups').'</th>';
+    $Str .= '<th>'.&mt('Student Data').&Apache::loncommon::help_open_topic("Chart_Student_Data").'</th>';
+    $Str .= '<th>'.&mt('Access Status').'</th>';
+    $Str .= '<th>'.&mt('Options').'</th>';
+    $Str .= '<th>'.&mt('Output Format').'</th>';
+    $Str .= &Apache::loncommon::end_data_table_header_row();
     #
-    $Str .= '<tr><td align="center">'."\n";
+    $Str .= &Apache::loncommon::start_data_table_row();
+    $Str .= '<td align="center">'."\n";
     $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
     $Str .= '</td>';
     #
+    $Str .= '<td align="center">'."\n";
+    $Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5);
+    $Str .= '</td>';
+    #
+    $Str .= '<td align="center">'."\n";
+    $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple', 5,undef);
+    $Str .= '</td>';
+    #
     $Str .= '<td align="center">';
     $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
     $Str .= '</td>';
     #
     # Render problem checkbox
     my $prob_checkbox = '<input type="checkbox" name="renderprob" ';
-    if (exists($ENV{'form.renderprob'}) && $ENV{'form.renderprob'} eq 'true') {
-        $prob_checkbox .= 'checked ';
+    if (exists($env{'form.renderprob'}) && $env{'form.renderprob'} eq 'true') {
+        $prob_checkbox .= 'checked="checked" ';
     }
     $prob_checkbox .= 'value="true" />';
     #
     # Compute correct answers checkbox
     my $ans_checkbox = '<input type="checkbox" name="correctans" ';
-    if (exists($ENV{'form.correctans'}) && $ENV{'form.correctans'} eq 'true') {
-        $ans_checkbox .= 'checked ';
+    if (exists($env{'form.correctans'}) && $env{'form.correctans'} eq 'true') {
+        $ans_checkbox .= 'checked="checked" ';
     }
     $ans_checkbox .= 'value="true" />';
     #
     # Show all submissions checkbox
     my $all_sub_checkbox = '<input type="checkbox" name="all_sub" ';
-    if (exists($ENV{'form.all_sub'}) && 
-        $ENV{'form.all_sub'} eq 'true') {
-        $all_sub_checkbox .= 'checked ';
+    if (exists($env{'form.all_sub'}) && 
+        $env{'form.all_sub'} eq 'true') {
+        $all_sub_checkbox .= 'checked="checked" ';
     }
     $all_sub_checkbox.= 'value="true" />';
     #
     # problem status checkbox
     my $prob_status_checkbox = '<input type="checkbox" name="prob_status" ';
-    if (exists($ENV{'form.prob_status'}) && 
-        $ENV{'form.prob_status'} eq 'true') {
-        $prob_status_checkbox .= 'checked ';
+    if (exists($env{'form.prob_status'}) && 
+        $env{'form.prob_status'} eq 'true') {
+        $prob_status_checkbox .= 'checked="checked" ';
     }
     $prob_status_checkbox .= 'value="true" />';
     #
-    $Str .= '<td align="right" halign="top">'.
-        '<label><b>'.
-        &mt('Show problem [_1]',$prob_checkbox).'</b></label><br />'.
-        '<label><b>'.
-        &mt('Show correct answers [_1]',$ans_checkbox).'</b></label><br />'.
-        '<label><b>'.
-        &mt('Show all submissions [_1]',$all_sub_checkbox).
-        '</b></label><br />'.
-        '<label><b>'.
-        &mt('Show problem grading [_1]',$prob_status_checkbox).
-        '</b></label><br />'.
-        '</td>';
-    #
-    $Str .= '</tr>'."\n";
-    $Str .= '</table>'."\n";
-    #
-    $Str .= '<nobr>'.&mt('Status: [_1]',
-                         '<input type="text" '.
-                         'name="stats_status" size="60" value="" />').
-            '</nobr>'.'</p>';    
-    ##
+    $Str .=
+        '<td valign="top">'
+       .'<label>'
+       .$prob_checkbox.&mt('Show problem')
+       .'</label><br />'
+       .'<label>'
+       .' '.$ans_checkbox.&mt('Show correct answers')
+       .'</label><br />'
+       .'<label>'
+       .$all_sub_checkbox.&mt('Show all submissions')
+       .'</label><br />'
+       .'<label>'
+       .$prob_status_checkbox.&mt('Show problem grading')
+       .'</label>'
+       .'</td>';
+    #
+    $Str .= '<td align="center" valign="top">'.$output_selector.'</td>';
+    #
+    $Str .= &Apache::loncommon::end_data_table_row();
+    $Str .= &Apache::loncommon::end_data_table();
+    #
     return $Str;
 }
 
+sub get_student_columns {
+    my ($show_named) = @_; 
+    my @student_columns;
+    if ($show_named) {
+        @student_columns = @Apache::lonstatistics::SelectedStudentData;
+        if (grep(/^all$/,@student_columns)) {
+            @student_columns = qw(fullname username domain id section status groups comments);
+        }
+    } else {
+        @student_columns = ('username');
+    }
+    return @student_columns;
+} 
+
 1;
 
 __END__