File:
[LON-CAPA] /
loncom /
interface /
Attic /
lonchart.pm
Revision
1.53:
download - view:
text,
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select for diffs
Tue Jul 2 22:06:53 2002 UTC (21 years, 10 months ago) by
stredwic
Branches:
MAIN
CVS tags:
HEAD
There was a problem where the offsets of the checkboxs above the columns
were not the same between Mozilla and Netscape. Mozilla's strayed way
far from their columns. To remedy this, I put the check boxes and the
column headers into a table. The current position for the check boxes
is center. It is almost center in both Netscape and Mozilla, but are definitely
above their respective columns. Left justified may look better, it puts
the checkbox directly above the first character of the header. This can
be changed. I had originally had the checkboxes centered and looks good
someplaces and only ok others. For now, I left it centered.
# The LearningOnline Network with CAPA
# (Publication Handler
#
# $Id: lonchart.pm,v 1.53 2002/07/02 22:06:53 stredwic Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
# Homework Performance Chart
#
# (Navigate Maps Handler
#
# (Page Handler
#
# (TeX Content Handler
# YEAR=2000
# 05/29/00,05/30 Gerd Kortemeyer)
# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23,
# 10/02,10/10,10/14,10/16,10/18,10/19,10/31,11/6,11/14,11/16 Gerd Kortemeyer)
# YEAR=2001
# 3/1/1,6/1,17/1,29/1,30/1,31/1 Gerd Kortemeyer)
# 7/10/01 Behrouz Minaei
# 9/8 Gerd Kortemeyer
# 10/1, 10/19, 11/17, 11/22, 11/24, 11/28 12/18 Behrouz Minaei
# YEAR=2002
# 2/1, 2/6, 2/19, 2/28 Behrouz Minaei
#
###
=pod
=cut
package Apache::lonchart;
use strict;
use Apache::Constants qw(:common :http);
use Apache::lonnet();
use Apache::loncommon();
use HTML::TokeParser;
use GDBM_File;
#my $jr;
# ----- FORMAT PRINT DATA ----------------------------------------------
sub FormatStudentInformation {
my ($cache,$name,$studentInformation,$spacePadding)=@_;
my $Str='';
for(my $index=0; $index<(scalar @$studentInformation); $index++) {
if(!&ShouldShowColumn($cache, 'heading'.$index)) {
next;
}
my $data=$cache->{$name.':'.$studentInformation->[$index]};
$Str .= $data;
my @dataLength=split(//,$data);
my $length=scalar @dataLength;
$Str .= (' 'x($cache->{$studentInformation->[$index].'Length'}-
$length));
$Str .= $spacePadding;
}
return $Str;
}
sub FormatStudentData {
my ($name,$coid,$studentInformation,$spacePadding,$ChartDB)=@_;
my ($sname,$sdom) = split(/\:/,$name);
my $Str;
my %CacheData;
unless(tie(%CacheData,'GDBM_File',$ChartDB,&GDBM_READER,0640)) {
return '';
}
# Handle Student information ------------------------------------------
# Handle user data
$Str=&FormatStudentInformation(\%CacheData, $name, $studentInformation,
$spacePadding);
# Handle errors
if($CacheData{$name.':error'} =~ /environment/) {
$Str .= '<br>';
untie(%CacheData);
return $Str;
}
if($CacheData{$name.':error'} =~ /course/) {
$Str .= '<br>';
untie(%CacheData);
return $Str;
}
# Handle problem data ------------------------------------------------
my $Version;
my $problemsCorrect = 0;
my $totalProblems = 0;
my $problemsSolved = 0;
my $numberOfParts = 0;
foreach my $sequence (split(/\:/,$CacheData{'orderedSequences'})) {
if(!&ShouldShowColumn(\%CacheData, 'sequence'.$sequence)) {
next;
}
my $characterCount=0;
foreach my $problemID (split(/\:/,$CacheData{$sequence.':problems'})) {
my $problem = $CacheData{$problemID.':problem'};
my $LatestVersion = $CacheData{$name.":version:$problem"};
if(!$LatestVersion) {
foreach my $part (split(/\:/,$CacheData{$sequence.':'.
$problemID.
':parts'})) {
$Str .= ' ';
$totalProblems++;
$characterCount++;
}
next;
}
my %partData=undef;
#initialize data, displays skips correctly
foreach my $part (split(/\:/,$CacheData{$sequence.':'.
$problemID.
':parts'})) {
$partData{$part.':tries'}=0;
$partData{$part.':code'}=' ';
}
for(my $Version=1; $Version<=$LatestVersion; $Version++) {
foreach my $part (split(/\:/,$CacheData{$sequence.':'.
$problemID.
':parts'})) {
if(!defined($CacheData{$name.":$Version:$problem".
":resource.$part.solved"})) {
next;
}
my $tries=0;
my $code=' ';
$tries = $CacheData{$name.":$Version:$problem".
":resource.$part.tries"};
$partData{$part.':tries'}=($tries) ? $tries : 0;
my $val = $CacheData{$name.":$Version:$problem".
":resource.$part.solved"};
if ($val eq 'correct_by_student') {$code = '*';}
elsif ($val eq 'correct_by_override') {$code = '+';}
elsif ($val eq 'incorrect_attempted') {$code = '.';}
elsif ($val eq 'incorrect_by_override'){$code = '-';}
elsif ($val eq 'excused') {$code = 'x';}
elsif ($val eq 'ungraded_attempted') {$code = '#';}
else {$code = ' ';}
$partData{$part.':code'}=$code;
}
}
$Str.='<a href="/adm/grades?symb='.
&Apache::lonnet::escape($problem).
'&student='.$sname.'&domain='.$sdom.'&command=submission">';
foreach(split(/\:/,$CacheData{$sequence.':'.$problemID.
':parts'})) {
if($partData{$_.':code'} eq '*') {
$problemsCorrect++;
if (($partData{$_.':tries'}<10) &&
($partData{$_.':tries'} ne '')) {
$partData{$_.':code'}=$partData{$_.':tries'};
}
} elsif($partData{$_.':code'} eq '+') {
$problemsCorrect++;
}
$Str .= $partData{$_.':code'};
$characterCount++;
if($partData{$_.':code'} ne 'x') {
$totalProblems++;
}
}
$Str.='</a>';
}
my $spacesNeeded=$CacheData{$sequence.':columnWidth'}-$characterCount;
$spacesNeeded -= 3;
$Str .= (' 'x$spacesNeeded);
my $outputProblemsCorrect = sprintf( "%3d", $problemsCorrect );
$Str .= '<font color="#007700">'.$outputProblemsCorrect.'</font>';
$problemsSolved += $problemsCorrect;
$problemsCorrect=0;
$Str .= $spacePadding;
}
my $outputProblemsSolved = sprintf( "%4d", $problemsSolved );
my $outputTotalProblems = sprintf( "%4d", $totalProblems );
$Str .= '<font color="#000088">'.$outputProblemsSolved.
' / '.$outputTotalProblems.'</font><br>';
untie(%CacheData);
return $Str;
}
sub CreateTableHeadings {
my ($CacheData,$studentInformation,$headings,$spacePadding)=@_;
my $Str='<tr>';
for(my $index=0; $index<(scalar @$headings); $index++) {
if(!&ShouldShowColumn($CacheData, 'heading'.$index)) {
next;
}
$Str .= '<td align="left"><pre>';
my $data=$$headings[$index];
$Str .= $data;
my @dataLength=split(//,$data);
my $length=scalar @dataLength;
$Str .= (' 'x($CacheData->{$$studentInformation[$index].'Length'}-
$length));
$Str .= $spacePadding;
$Str .= '</pre></td>';
}
foreach my $sequence (split(/\:/,$CacheData->{'orderedSequences'})) {
if(!&ShouldShowColumn($CacheData, 'sequence'.$sequence)) {
next;
}
$Str .= '<td align="left"><pre>';
my $name = $CacheData->{$sequence.':title'};
$Str .= $name;
my @titleLength=split(//,$CacheData->{$sequence.':title'});
my $leftover=$CacheData->{$sequence.':columnWidth'}-
(scalar @titleLength);
$Str .= (' 'x$leftover);
$Str .= $spacePadding;
$Str .= '</pre></td>';
}
$Str .= '<td>Total Solved/Total Problems</td>';
$Str .= '</tr></tbody></table>';
return $Str;
}
sub CreateColumnSelectionBox {
my ($CacheData,$studentInformation,$headings,$spacePadding)=@_;
my $missing=0;
my $notThere='<tr><td align="right"><b>Select column to view:</b>';
my $name;
$notThere .= '<td align="left">';
$notThere .= '<select name="reselect" size="4" multiple="true">'."\n";
for(my $index=0; $index<(scalar @$headings); $index++) {
if(&ShouldShowColumn($CacheData, 'heading'.$index)) {
next;
}
$name = $headings->[$index];
$notThere .= '<option value="heading'.$index.'">';
$notThere .= $name.'</option>'."\n";
$missing++;
}
foreach my $sequence (split(/\:/,$CacheData->{'orderedSequences'})) {
if(&ShouldShowColumn($CacheData, 'sequence'.$sequence)) {
next;
}
$name = $CacheData->{$sequence.':title'};
$notThere .= '<option value="sequence'.$sequence.'">';
$notThere .= $name.'</option>'."\n";
$missing++;
}
if($missing) {
$notThere .= '</select>';
} else {
$notThere='<tr><td>';
}
return $notThere.'</td></tr></tbody></table>';
}
sub CreateColumnSelectors {
my ($CacheData,$studentInformation,$headings,$spacePadding)=@_;
my $found=0;
my ($name, $length, $position);
my $present='<table border="0" cellpadding="0" cellspacing="0">';
$present .= '</tbody><tr>';
for(my $index=0; $index<(scalar @$headings); $index++) {
if(!&ShouldShowColumn($CacheData, 'heading'.$index)) {
next;
}
$present .= '<td align="center">';
$name = $headings->[$index];
$present .= '<input type="checkbox" checked="on" ';
$present .= 'name="heading'.$index.'">';
$present .= '</td>';
$found++;
}
foreach my $sequence (split(/\:/,$CacheData->{'orderedSequences'})) {
if(!&ShouldShowColumn($CacheData, 'sequence'.$sequence)) {
next;
}
$present .= '<td align="center">';
$name = $CacheData->{$sequence.':title'};
$present .= '<input type="checkbox" checked="on" ';
$present .= 'name="sequence'.$sequence.'">';
$present .= '</td>';
$found++;
}
if($found) {
$present = $present;
} else {
$present = '<td></td>';
}
return $present.'</tr></form>'."\n";;
}
sub CreateForm {
my ($CacheData)=@_;
my $OpSel1='';
my $OpSel2='';
my $OpSel3='';
my $Status = $CacheData->{'form.status'};
if ( $Status eq 'Any' ) { $OpSel3='selected'; }
elsif ($Status eq 'Expired' ) { $OpSel2 = 'selected'; }
else { $OpSel1 = 'selected'; }
my $Ptr .= '<form name="stat" method="post" action="/adm/chart" >'."\n";
$Ptr .= '<table border="0"><tbody>';
$Ptr .= '<tr><td align="right">';
$Ptr .= '</td><td align="left">';
$Ptr .= '<input type="submit" name="recalculate" ';
$Ptr .= 'value="Recalculate Chart"/>'."\n";
$Ptr .= ' ';
$Ptr .= '<input type="submit" name="refresh" ';
$Ptr .= 'value="Refresh Chart"/>'."\n";
$Ptr .= ' ';
$Ptr .= '<input type="submit" name="reset" ';
$Ptr .= 'value="Reset Selections"/></td>'."\n";
$Ptr .= '</tr><tr><td align="right">';
$Ptr .= '<b> Sort by: </b>'."\n";
$Ptr .= '</td><td align="left">';
$Ptr .= '<input type="submit" name="sort" value="User Name" />'."\n";
$Ptr .= ' ';
$Ptr .= '<input type="submit" name="sort" value="Last Name" />'."\n";
$Ptr .= ' ';
$Ptr .= '<input type="submit" name="sort" value="Section"/>'."\n";
$Ptr .= '</td></tr><tr><td align="right">';
$Ptr .= '<b> Student Status: </b>'."\n".
'</td><td align="left">'.
'<select name="status">'.
'<option '.$OpSel1.' >Active</option>'."\n".
'<option '.$OpSel2.' >Expired</option>'."\n".
'<option '.$OpSel3.' >Any</option> </select> '."\n";
$Ptr .= '</td></tr>';
return $Ptr;
}
sub CreateLegend {
my $Str = "<p><pre>".
"1..9: correct by student in 1..9 tries\n".
" *: correct by student in more than 9 tries\n".
" +: correct by override\n".
" -: incorrect by override\n".
" .: incorrect attempted\n".
" #: ungraded attempted\n".
" : not attempted\n".
" x: excused".
"</pre><p>";
return $Str;
}
sub StartDocument {
my $Str = '';
$Str .= '<html>';
$Str .= '<head><title>';
$Str .= 'LON-CAPA Assessment Chart</title></head>';
$Str .= '<body bgcolor="#FFFFFF">';
$Str .= '<script>window.focus();</script>';
$Str .= '<img align=right src=/adm/lonIcons/lonlogos.gif>';
$Str .= '<h1>Assessment Chart</h1>';
$Str .= '<h3>'.localtime().'</h3>';
$Str .= '<h1>'.$ENV{'course.'.$ENV{'request.course.id'}.'.description'};
$Str .= '</h1>';
return $Str;
}
# ----- END FORMAT PRINT DATA ------------------------------------------
# ----- DOWNLOAD INFORMATION -------------------------------------------
sub DownloadPrerequisiteData {
my ($courseID, $c)=@_;
my ($courseDomain,$courseNumber)=split(/\_/,$courseID);
my %classlist=&Apache::lonnet::dump('classlist',$courseDomain,
$courseNumber);
my ($checkForError)=keys (%classlist);
if($checkForError =~ /^(con_lost|error|no_such_host)/i) {
return \%classlist;
}
foreach my $name (keys(%classlist)) {
if($c->aborted()) {
$classlist{'error'}='aborted';
return \%classlist;
}
my ($studentName,$studentDomain) = split(/\:/,$name);
# Download student environment data, specifically the full name and id.
my %studentInformation=&Apache::lonnet::get('environment',
['lastname','generation',
'firstname','middlename',
'id'],
$studentDomain,
$studentName);
$classlist{$name.':studentInformation'}=\%studentInformation;
if($c->aborted()) {
$classlist{'error'}='aborted';
return \%classlist;
}
#Section
my %section=&Apache::lonnet::dump('roles',$studentDomain,$studentName);
$classlist{$name.':section'}=\%section;
}
return \%classlist;
}
sub DownloadStudentCourseInformation {
my ($name,$courseID)=@_;
my ($studentName,$studentDomain) = split(/\:/,$name);
# Download student course data
my %courseData=&Apache::lonnet::dump($courseID,$studentDomain,
$studentName);
return \%courseData;
}
# ----- END DOWNLOAD INFORMATION ---------------------------------------
# ----- END PROCESSING FUNCTIONS ---------------------------------------
sub ProcessTopResourceMap {
my ($ChartDB,$c)=@_;
my %hash;
my $fn=$ENV{'request.course.fn'};
if(-e "$fn.db") {
my $tieTries=0;
while($tieTries < 3) {
if(tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
last;
}
$tieTries++;
sleep 1;
}
if($tieTries >= 3) {
return 'Coursemap undefined.';
}
} else {
return 'Can not open Coursemap.';
}
my %CacheData;
unless(tie(%CacheData,'GDBM_File',$ChartDB,&GDBM_WRCREAT,0640)) {
untie(%hash);
return 'Could not tie cache hash.';
}
my (@sequences, @currentResource, @finishResource);
my ($currentSequence, $currentResourceID, $lastResourceID);
$currentResourceID=$hash{'ids_/res/'.$ENV{'request.course.uri'}};
push(@currentResource, $currentResourceID);
$lastResourceID=-1;
$currentSequence=-1;
my $topLevelSequenceNumber = $currentSequence;
while(1) {
if($c->aborted()) {
last;
}
# HANDLE NEW SEQUENCE!
#if page || sequence
if(defined($hash{'map_pc_'.$hash{'src_'.$currentResourceID}})) {
push(@sequences, $currentSequence);
push(@currentResource, $currentResourceID);
push(@finishResource, $lastResourceID);
$currentSequence=$hash{'map_pc_'.$hash{'src_'.$currentResourceID}};
# Mark sequence as containing problems. If it doesn't, then
# it will be removed when processing for this sequence is
# complete. This allows the problems in a sequence
# to be outputed before problems in the subsequences
if(!defined($CacheData{'orderedSequences'})) {
$CacheData{'orderedSequences'}=$currentSequence;
} else {
$CacheData{'orderedSequences'}.=':'.$currentSequence;
}
$lastResourceID=$hash{'map_finish_'.
$hash{'src_'.$currentResourceID}};
$currentResourceID=$hash{'map_start_'.
$hash{'src_'.$currentResourceID}};
if(!($currentResourceID) || !($lastResourceID)) {
$currentSequence=pop(@sequences);
$currentResourceID=pop(@currentResource);
$lastResourceID=pop(@finishResource);
if($currentSequence eq $topLevelSequenceNumber) {
last;
}
}
}
# Handle gradable resources: exams, problems, etc
$currentResourceID=~/(\d+)\.(\d+)/;
my $partA=$1;
my $partB=$2;
if($hash{'src_'.$currentResourceID}=~
/\.(problem|exam|quiz|assess|survey|form)$/ &&
$partA eq $currentSequence) {
my $Problem = &Apache::lonnet::symbclean(
&Apache::lonnet::declutter($hash{'map_id_'.$partA}).
'___'.$partB.'___'.
&Apache::lonnet::declutter($hash{'src_'.
$currentResourceID}));
$CacheData{$currentResourceID.':problem'}=$Problem;
if(!defined($CacheData{$currentSequence.':problems'})) {
$CacheData{$currentSequence.':problems'}=$currentResourceID;
} else {
$CacheData{$currentSequence.':problems'}.=
':'.$currentResourceID;
}
#Get Parts for problem
my $meta=$hash{'src_'.$currentResourceID};
foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
if($_=~/^stores\_(\d+)\_tries$/) {
my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
if(!defined($CacheData{$currentSequence.':'.
$currentResourceID.':parts'})) {
$CacheData{$currentSequence.':'.$currentResourceID.
':parts'}=$Part;
} else {
$CacheData{$currentSequence.':'.$currentResourceID.
':parts'}.=':'.$Part;
}
}
}
}
#if resource == finish resource
if($currentResourceID eq $lastResourceID) {
#pop off last resource of sequence
$currentResourceID=pop(@currentResource);
$lastResourceID=pop(@finishResource);
if(defined($CacheData{$currentSequence.':problems'})) {
# Capture sequence information here
$CacheData{$currentSequence.':title'}=
$hash{'title_'.$currentResourceID};
my $totalProblems=0;
foreach my $currentProblem (split(/\:/,
$CacheData{$currentSequence.
':problems'})) {
foreach (split(/\:/,$CacheData{$currentSequence.':'.
$currentProblem.
':parts'})) {
$totalProblems++;
}
}
my @titleLength=split(//,$CacheData{$currentSequence.
':title'});
# $extra is 3 for problems correct and 3 for space
# between problems correct and problem output
my $extra = 6;
if(($totalProblems + $extra) > (scalar @titleLength)) {
$CacheData{$currentSequence.':columnWidth'}=
$totalProblems + $extra;
} else {
$CacheData{$currentSequence.':columnWidth'}=
(scalar @titleLength);
}
} else {
$CacheData{'orderedSequences'}=~s/$currentSequence//;
$CacheData{'orderedSequences'}=~s/::/:/g;
$CacheData{'orderedSequences'}=~s/^:|:$//g;
}
$currentSequence=pop(@sequences);
if($currentSequence eq $topLevelSequenceNumber) {
last;
}
}
# MOVE!!!
#move to next resource
unless(defined($hash{'to_'.$currentResourceID})) {
# big problem, need to handle. Next is probably wrong
last;
}
my @nextResources=();
foreach (split(/\,/,$hash{'to_'.$currentResourceID})) {
push(@nextResources, $hash{'goesto_'.$_});
}
push(@currentResource, @nextResources);
# Set the next resource to be processed
$currentResourceID=pop(@currentResource);
}
unless (untie(%hash)) {
&Apache::lonnet::logthis("<font color=blue>WARNING: ".
"Could not untie coursemap $fn (browse)".
".</font>");
}
unless (untie(%CacheData)) {
&Apache::lonnet::logthis("<font color=blue>WARNING: ".
"Could not untie Cache Hash (browse)".
".</font>");
}
return 'OK';
}
sub ProcessSection {
my ($sectionData, $courseid,$ActiveFlag)=@_;
$courseid=~s/\_/\//g;
$courseid=~s/^(\w)/\/$1/;
my $cursection='-1';
my $oldsection='-1';
my $status='Expired';
my $section='';
foreach my $key (keys (%$sectionData)) {
my $value = $sectionData->{$key};
if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
$section=$1;
if($key eq $courseid.'_st') {
$section='';
}
my ($dummy,$end,$start)=split(/\_/,$value);
my $now=time;
my $notactive=0;
if ($start) {
if($now<$start) {
$notactive=1;
}
}
if($end) {
if ($now>$end) {
$notactive=1;
}
}
if($notactive == 0) {
$status='Active';
$cursection=$section;
last;
}
if($notactive == 1) {
$oldsection=$section;
}
}
}
if($status eq $ActiveFlag) {
if($cursection eq '-1') {
return $oldsection;
}
return $cursection;
}
if($ActiveFlag eq 'Any') {
if($cursection eq '-1') {
return $oldsection;
}
return $cursection;
}
return '-1';
}
sub ProcessStudentInformation {
my ($CacheData,$studentInformation,$section,$date,$name,$courseID,$c)=@_;
my ($studentName,$studentDomain) = split(/\:/,$name);
$CacheData->{$name.':username'}=$studentName;
$CacheData->{$name.':domain'}=$studentDomain;
$CacheData->{$name.':date'}=$date;
my ($checkForError)=keys(%$studentInformation);
if($checkForError =~ /^(con_lost|error|no_such_host)/i) {
$CacheData->{$name.':error'}=
'Could not download student environment data.';
$CacheData->{$name.':fullname'}='';
$CacheData->{$name.':id'}='';
} else {
$CacheData->{$name.':fullname'}=&ProcessFullName(
$studentInformation->{'lastname'},
$studentInformation->{'generation'},
$studentInformation->{'firstname'},
$studentInformation->{'middlename'});
$CacheData->{$name.':id'}=$studentInformation->{'id'};
}
# Get student's section number
my $sec=&ProcessSection($section, $courseID, $CacheData->{'form.status'});
if($sec != -1) {
$CacheData->{$name.':section'}=$sec;
} else {
$CacheData->{$name.':section'}='';
}
return 0;
}
sub ProcessClassList {
my ($classlist,$courseID,$ChartDB,$c)=@_;
my @names=();
my %CacheData;
if(tie(%CacheData,'GDBM_File',$ChartDB,&GDBM_WRCREAT,0640)) {
foreach my $name (keys(%$classlist)) {
if($name =~ /\:section/ || $name =~ /\:studentInformation/ ||
$name eq '') {
next;
}
if($c->aborted()) {
last;
}
push(@names,$name);
&ProcessStudentInformation(
\%CacheData,
$classlist->{$name.':studentInformation'},
$classlist->{$name.':section'},
$classlist->{$name},
$name,$courseID,$c);
}
untie(%CacheData);
}
return @names;
}
# ----- END PROCESSING FUNCTIONS ---------------------------------------
# ----- HELPER FUNCTIONS -----------------------------------------------
sub SpaceColumns {
my ($students,$studentInformation,$headings,$ChartDB)=@_;
my %CacheData;
if(tie(%CacheData,'GDBM_File',$ChartDB,&GDBM_WRCREAT,0640)) {
# Initialize Lengths
for(my $index=0; $index<(scalar @$headings); $index++) {
my @titleLength=split(//,$$headings[$index]);
$CacheData{$$studentInformation[$index].'Length'}=
scalar @titleLength;
}
foreach my $name (@$students) {
foreach (@$studentInformation) {
my @dataLength=split(//,$CacheData{$name.':'.$_});
my $length=scalar @dataLength;
if($length > $CacheData{$_.'Length'}) {
$CacheData{$_.'Length'}=$length;
}
}
}
untie(%CacheData);
}
return;
}
sub ProcessFullName {
my ($lastname, $generation, $firstname, $middlename)=@_;
my $Str = '';
if($lastname ne '') {
$Str .= $lastname.' ';
if($generation ne '') {
$Str .= $generation;
} else {
chop($Str);
}
$Str .= ', ';
if($firstname ne '') {
$Str .= $firstname.' ';
}
if($middlename ne '') {
$Str .= $middlename;
} else {
chop($Str);
if($firstname eq '') {
chop($Str);
}
}
} else {
if($firstname ne '') {
$Str .= $firstname.' ';
}
if($middlename ne '') {
$Str .= $middlename.' ';
}
if($generation ne '') {
$Str .= $generation;
} else {
chop($Str);
}
}
return $Str;
}
sub SortStudents {
my ($students,$CacheData)=@_;
my @sorted1Students=();
foreach (@$students) {
my ($end,$start)=split(/\:/,$CacheData->{$_.':date'});
my $active=1;
my $now=time;
my $Status=$CacheData->{'form.status'};
$Status = ($Status) ? $Status : 'Active';
if((($end) && $now > $end) && (($Status eq 'Active'))) {
$active=0;
}
if(($Status eq 'Expired') && ($end == 0 || $now < $end)) {
$active=0;
}
if($active) {
push(@sorted1Students, $_);
}
}
my $Pos = $CacheData->{'form.sort'};
my %sortData;
if($Pos eq 'Last Name') {
for(my $index=0; $index<scalar @sorted1Students; $index++) {
$sortData{$CacheData->{$sorted1Students[$index].':fullname'}}=
$sorted1Students[$index];
}
} elsif($Pos eq 'Section') {
for(my $index=0; $index<scalar @sorted1Students; $index++) {
$sortData{$CacheData->{$sorted1Students[$index].':section'}.
$sorted1Students[$index]}=$sorted1Students[$index];
}
} else {
# Sort by user name
for(my $index=0; $index<scalar @sorted1Students; $index++) {
$sortData{$sorted1Students[$index]}=$sorted1Students[$index];
}
}
my @order = ();
foreach my $key (sort(keys(%sortData))) {
push (@order,$sortData{$key});
}
return @order;
}
sub TestCacheData {
my ($ChartDB)=@_;
my $isCached=-1;
my %testData;
my $tieTries=0;
if ((-e "$ChartDB") && (!defined($ENV{'form.recalculate'}))) {
$isCached = 1;
} else {
$isCached = 0;
}
while($tieTries < 10) {
my $result=0;
if($isCached) {
$result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_READER,0640);
} else {
$result=tie(%testData,'GDBM_File',$ChartDB,&GDBM_NEWDB,0640);
}
if($result) {
last;
}
$tieTries++;
sleep 1;
}
if($tieTries >= 10) {
return -1;
}
untie(%testData);
return $isCached;
}
sub ExtractStudentData {
my ($courseData, $name, $ChartDB)=@_;
my %CacheData;
if(tie(%CacheData,'GDBM_File',$ChartDB,&GDBM_WRCREAT,0640)) {
my ($checkForError) = keys(%$courseData);
if($checkForError =~ /^(con_lost|error|no_such_host)/i) {
$CacheData{$name.':error'}='Could not download course data.';
} else {
foreach my $key (keys (%$courseData)) {
$CacheData{$name.':'.$key}=$courseData->{$key};
}
if(defined($CacheData{'NamesOfStudents'})) {
$CacheData{'NamesOfStudents'}.=':::'.$name;
} else {
$CacheData{'NamesOfStudents'}=$name;
}
}
untie(%CacheData);
}
return;
}
sub ShouldShowColumn {
my ($cache,$test)=@_;
if($cache->{'form.reset'} eq 'true') {
return 1;
}
my $headings=$cache->{'form.headings'};
my $sequences=$cache->{'form.sequences'};
if($headings eq 'ALLHEADINGS' || $sequences eq 'ALLSEQUENCES' ||
$headings=~/$test/ || $sequences=~/$test/) {
return 1;
}
# my $reselected=$cache->{'form.reselect'};
# if($reselected=~/$test/) {
# return 1;
# }
return 0;
}
sub ProcessFormData {
my ($ChartDB)=@_;
my %CacheData;
if(tie(%CacheData,'GDBM_File',$ChartDB,&GDBM_WRCREAT,0640)) {
if(defined($ENV{'form.sort'})) {
$CacheData{'form.sort'}=$ENV{'form.sort'};
} elsif(!defined($CacheData{'form.sort'})) {
$CacheData{'form.sort'}='username';
}
# Ignore $ENV{'form.refresh'}
# Ignore $ENV{'form.recalculate'}
if(defined($ENV{'form.status'})) {
$CacheData{'form.status'}=$ENV{'form.status'};
} elsif(!defined($CacheData{'form.status'})) {
$CacheData{'form.status'}='Active';
}
my @headings=();
my @sequences=();
my $found=0;
foreach (keys(%ENV)) {
if(/form\.heading/) {
$found++;
push(@headings, $_);
} elsif(/form\.sequence/) {
$found++;
push(@sequences, $_);
} elsif(/form\./) {
$found++;
}
}
if($found) {
$CacheData{'form.headings'}=join(":::",@headings);
$CacheData{'form.sequences'}=join(":::",@sequences);
}
if(defined($ENV{'form.reselect'})) {
my @reselected = (ref($ENV{'form.reselect'}) ?
@{$ENV{'form.reselect'}}
: ($ENV{'form.reselect'}));
foreach (@reselected) {
if(/heading/) {
$CacheData{'form.headings'}.=":::".$_;
} elsif(/sequence/) {
$CacheData{'form.sequences'}.=":::".$_;
}
}
}
if(defined($ENV{'form.reset'})) {
$CacheData{'form.reset'}='true';
$CacheData{'form.status'}='Active';
$CacheData{'form.sort'}='username';
$CacheData{'form.headings'}='ALLHEADINGS';
$CacheData{'form.sequences'}='ALLSEQUENCES';
} else {
$CacheData{'form.reset'}='false';
}
untie(%CacheData);
}
return;
}
# ----- END HELPER FUNCTIONS --------------------------------------------
sub BuildChart {
my ($r)=@_;
my $c = $r->connection;
# Start the lonchart document
$r->content_type('text/html');
$r->send_http_header;
$r->print(&StartDocument());
$r->rflush();
# Test for access to the CacheData
my $isCached=0;
my $cid=$ENV{'request.course.id'};
my $ChartDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
"_$ENV{'user.domain'}_$cid\_chart.db";
$isCached=&TestCacheData($ChartDB);
if($isCached < 0) {
$r->print("Unable to tie hash to db file");
$r->rflush();
return;
}
&ProcessFormData($ChartDB);
# Download class list information if not using cached data
my %CacheData;
my @students=();
my @studentInformation=('username','domain','section','id','fullname');
my @headings=('User Name','Domain','Section','PID','Full Name');
my $spacePadding=' ';
if(!$isCached) {
my $processTopResourceMapReturn=&ProcessTopResourceMap($ChartDB,$c);
if($processTopResourceMapReturn ne 'OK') {
$r->print($processTopResourceMapReturn);
return;
}
if($c->aborted()) { return; }
my $classlist=&DownloadPrerequisiteData($cid, $c);
my ($checkForError)=keys(%$classlist);
if($checkForError =~ /^(con_lost|error|no_such_host)/i ||
defined($classlist->{'error'})) {
return;
}
if($c->aborted()) { return; }
@students=&ProcessClassList($classlist,$cid,$ChartDB,$c);
if($c->aborted()) { return; }
&SpaceColumns(\@students,\@studentInformation,\@headings,
$ChartDB);
if($c->aborted()) { return; }
} else {
if(!$c->aborted() && tie(%CacheData,'GDBM_File',$ChartDB,
&GDBM_READER,0640)) {
@students=split(/:::/,$CacheData{'NamesOfStudents'});
}
}
# Sort students and print out table desciptive data
if(tie(%CacheData,'GDBM_File',$ChartDB,&GDBM_READER,0640)) {
if(!$c->aborted()) { @students=&SortStudents(\@students,\%CacheData); }
if(!$c->aborted()) { $r->print('<h1>'.(scalar @students).
' students</h1>'); }
if(!$c->aborted()) { $r->rflush(); }
if(!$c->aborted()) { $r->print(&CreateLegend()); }
if(!$c->aborted()) { $r->print(&CreateForm(\%CacheData)); }
if(!$c->aborted()) { $r->print(&CreateColumnSelectionBox(
\%CacheData,
\@studentInformation,
\@headings,
$spacePadding)); }
if(!$c->aborted()) { $r->print(&CreateColumnSelectors(
\%CacheData,
\@studentInformation,
\@headings,
$spacePadding)); }
if(!$c->aborted()) { $r->print(&CreateTableHeadings(
\%CacheData,
\@studentInformation,
\@headings,
$spacePadding)); }
if(!$c->aborted()) { $r->rflush(); }
untie(%CacheData);
} else {
$r->print("Init2: Unable to tie hash to db file");
return;
}
my @updateStudentList = ();
my $courseData;
$r->print('<pre>');
foreach (@students) {
if($c->aborted()) {
last;
}
if(!$isCached) {
$courseData=&DownloadStudentCourseInformation($_, $cid);
if($c->aborted()) { last; }
push(@updateStudentList, $_);
&ExtractStudentData($courseData, $_, $ChartDB);
}
$r->print(&FormatStudentData($_, $cid, \@studentInformation,
$spacePadding, $ChartDB));
$r->rflush();
}
if(!$isCached && tie(%CacheData,'GDBM_File',$ChartDB,&GDBM_WRCREAT,0640)) {
$CacheData{'NamesOfStudents'}=join(":::", @updateStudentList);
# $CacheData{'NamesOfStudents'}=
# &Apache::lonnet::arrayref2str(\@updateStudentList);
untie(%CacheData);
}
$r->print('</pre></body></html>');
$r->rflush();
return;
}
# ================================================================ Main Handler
sub handler {
my $r=shift;
# $jr=$r;
unless(&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
$ENV{'user.error.msg'}=
$r->uri.":vgr:0:0:Cannot view grades for complete course";
return HTTP_NOT_ACCEPTABLE;
}
# Set document type for header only
if ($r->header_only) {
if($ENV{'browser.mathml'}) {
$r->content_type('text/xml');
} else {
$r->content_type('text/html');
}
&Apache::loncommon::no_cache($r);
$r->send_http_header;
return OK;
}
unless($ENV{'request.course.fn'}) {
my $requrl=$r->uri;
$ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
return HTTP_NOT_ACCEPTABLE;
}
&BuildChart($r);
return OK;
}
1;
__END__
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