# The LearningOnline Network with CAPA # The LON-CAPA Homework handler # # $Id: lonhomework.pm,v 1.110 2003/02/25 23:18:22 albertel 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/ # # Guy Albertelli # 11/30 Gerd Kortemeyer # 6/1,8/17,8/18 Gerd Kortemeyer # 7/18 Jeremy Bowers package Apache::lonhomework; use strict; use Apache::style(); use Apache::lonxml(); use Apache::lonnet(); use Apache::lonplot(); use Apache::inputtags(); use Apache::structuretags(); use Apache::randomlabel(); use Apache::response(); use Apache::hint(); use Apache::outputtags(); use Apache::caparesponse(); use Apache::radiobuttonresponse(); use Apache::optionresponse(); use Apache::imageresponse(); use Apache::essayresponse(); use Apache::externalresponse(); use Apache::rankresponse(); use Apache::matchresponse(); use Apache::Constants qw(:common); use HTML::Entities(); use Apache::loncommon(); #use Time::HiRes qw( gettimeofday tv_interval ); BEGIN { &Apache::lonxml::register_insert(); } sub get_target { if ( $ENV{'request.state'} eq "published") { if ( defined($ENV{'form.grade_target'} ) && ($ENV{'form.grade_target'} eq 'tex')) { return ($ENV{'form.grade_target'}); } elsif ( defined($ENV{'form.grade_target'} ) && ($Apache::lonhomework::viewgrades == 'F' )) { return ($ENV{'form.grade_target'}); } if ( defined($ENV{'form.submitted'})) { return ('grade', 'web'); } else { return ('web'); } } elsif ($ENV{'request.state'} eq "construct") { if ( defined($ENV{'form.grade_target'}) ) { return ($ENV{'form.grade_target'}); } if ( defined($ENV{'form.preview'})) { if ( defined($ENV{'form.submitted'})) { return ('grade', 'web'); } else { return ('web'); } } else { if ( $ENV{'form.problemmode'} eq 'View' || $ENV{'form.problemmode'} eq 'Discard Edits and View') { if ( defined($ENV{'form.submitted'}) && (!defined($ENV{'form.resetdata'})) ) { return ('grade', 'web','answer'); } else { return ('web','answer'); } } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) { if ( $ENV{'form.submitted'} eq 'edit' ) { if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) { return ('modified','web','answer'); } else { return ('modified','edit'); } } else { return ('edit'); } } else { return ('web'); } } } return (); } sub setup_vars { my ($target) = @_; return ';' # return ';$external::target='.$target.';'; } sub send_header { my ($request)= @_; $request->print(&Apache::lontexconvert::header()); # $request->print('
'); $request->print(&Apache::lontexconvert::footer()); } $Apache::lonxml::browse=''; # JB, 9/24/2002: Any changes in this function may require a change # in lonnavmaps::resource::getDateStatus. sub check_access { my ($id) = @_; my $date =''; my $status; my $datemsg = ''; my $lastdate = ''; my $temp; my $type; my $passed; if ($ENV{'request.state'} eq "construct") { &Apache::lonxml::debug("in construction ignoring dates"); $status='CAN_ANSWER'; $datemsg='is in under construction'; return ($status,$datemsg); } &Apache::lonxml::debug("checking for part :$id:"); &Apache::lonxml::debug("time:".time); foreach $temp ("opendate","duedate","answerdate") { $lastdate = $date; $date = &Apache::lonnet::EXT("resource.$id.$temp"); my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type"); if ($thistype =~ /^(con_lost|no_such_host)/ || $date =~ /^(con_lost|no_such_host)/) { $status='UNAVAILABLE'; $date="may open later."; return($status,$date); } if ($thistype eq 'date_interval') { if ($temp eq 'opendate') { $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date; } if ($temp eq 'answerdate') { $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date; } } &Apache::lonxml::debug("found :$date: for :$temp:"); if ($date eq '') { $date = "an unknown date"; $passed = 0; } elsif ($date eq 'con_lost') { $date = "an indeterminate date"; $passed = 0; } else { if (time < $date) { $passed = 0; } else { $passed = 1; } $date = localtime $date; } if (!$passed) { $type=$temp; last; } } &Apache::lonxml::debug("have :$type:$passed:"); if ($passed) { $status='SHOW_ANSWER'; $datemsg=$date; } elsif ($type eq 'opendate') { $status='CLOSED'; $datemsg = "will open on $date"; } elsif ($type eq 'duedate') { $status='CAN_ANSWER'; $datemsg = "is due at $date"; } elsif ($type eq 'answerdate') { $status='CLOSED'; $datemsg = "was due on $lastdate, and answers will be available on $date"; } if ($status eq 'CAN_ANSWER') { #check #tries my $tries = $Apache::lonhomework::history{"resource.$id.tries"}; my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries"); if ( $tries eq '' ) { $tries = '0'; } if ( $maxtries eq '' ) { $maxtries = '2'; } if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } } if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') && (!$Apache::lonhomework::history{"resource.0.outtoken"})) { return ('UNCHECKEDOUT','needs to be checked out'); } &Apache::lonxml::debug("sending back :$status:$datemsg:"); if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) { &Apache::lonxml::debug("should be allowed to browse a resource when closed"); $status='CAN_ANSWER'; $datemsg='is closed but you are allowed to view it'; } return ($status,$datemsg); } sub showhash { my (%hash) = @_; &showhashsubset(\%hash,'.'); return ''; } sub showarray { my ($array)=@_; my $string="("; foreach my $elm (@{ $array }) { if (ref($elm)) { if ($elm =~ /ARRAY/ ) { $string.=&showarray($elm); } } else { $string.="$elm," } } chop($string); $string.=")"; return $string; } sub showhashsubset { my ($hash,$keyre) = @_; my $resultkey; foreach $resultkey (sort keys %$hash) { if ($resultkey =~ /$keyre/) { if (ref($$hash{$resultkey})) { if ($$hash{$resultkey} =~ /ARRAY/ ) { &Apache::lonxml::debug("$resultkey ---- ". &showarray($$hash{$resultkey})); } elsif ($$hash{$resultkey} =~ /HASH/ ) { &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); &showhashsubset($$hash{$resultkey},'.'); } else { &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); } } else { &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); } } } &Apache::lonxml::debug("\nUndid changes, Switched $filebak and $file
"); } else { $request->print("Unable to undo, unable to switch $filebak and $file
"); $error=1; } } else { my $fs=Apache::File->new(">$filebak"); if (defined($fs)) { print $fs $$problem; $request->print("Making Backup to $filebakPart '.$part.' | |
'.join(' | ',@{ $answer }). ' |
Part '.$part. ' is not analyzabale at this time
'); } } &analyze_footer($request); &Apache::lonhomework::showhash(%overall); return $result; } sub editxmlmode { my ($request,$file) = @_; my $result; my $problem=&Apache::lonnet::getfile($file); if ($problem == -1) { &Apache::lonxml::error(" Unable to find $file"); $problem=''; } if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) { my $error=&handle_save_or_undo($request,\$problem, \$ENV{'form.editxmltext'}); if (!$error) { $problem=&Apache::lonnet::getfile($file); } } &Apache::lonhomework::showhashsubset(\%ENV,'^form'); if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) { &Apache::lonhomework::showhashsubset(\%ENV,'^form'); $ENV{'form.problemmode'}='View'; &renderpage($request,$file); } else { my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem); my $xml_help = Apache::loncommon::help_open_topic("Problem_Editor_XML_Index",'Problem Editing Help'); if ($cols > 80) { $cols = 80; } if ($cols < 70) { $cols = 70; } if ($rows < 20) { $rows = 20; } $result.=' '; $request->print($result); } return ''; } sub renderpage { my ($request,$file) = @_; my (@targets) = &get_target(); &Apache::lonxml::debug("Running targets ".join(':',@targets)); foreach my $target (@targets) { #my $t0 = [&gettimeofday()]; my $problem=&Apache::lonnet::getfile($file); if ($problem == -1) { &Apache::lonxml::error(" Unable to find $file"); $problem=''; } my %mystyle; my $result = ''; if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); } if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); } if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');} &Apache::lonxml::debug("Should be parsing now"); $result = &Apache::lonxml::xmlparse($request, $target, $problem, &setup_vars($target),%mystyle); #$request->print("Result follows:"); if ($target eq 'modified') { &handle_save_or_undo($request,\$problem,\$result); } else { if ($target eq 'analyze') { $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze); undef(%Apache::lonhomework::analyze); } #my $td=&tv_interval($t0); #if ( $Apache::lonxml::debug) { #$result =~ s: