--- loncom/homework/lonhomework.pm 2000/07/25 21:27:30 1.2 +++ loncom/homework/lonhomework.pm 2001/04/26 21:28:33 1.41 @@ -1,5 +1,7 @@ # The LON-CAPA Homework handler # Guy Albertelli +# 11/30 Gerd Kortemeyer +# 6/1 Gerd Kortemeyer package Apache::lonhomework; use strict; @@ -8,47 +10,267 @@ use Apache::lonxml; use Apache::lonnet; use Apache::inputtags; use Apache::structuretags; +use Apache::response; +use Apache::hint; +use Apache::outputtags; +use Apache::Constants qw(:common); -sub handler { - my $request=shift; +sub get_target { + if ( $ENV{'request.state'} eq "published") { + if ( defined $ENV{'form.submitted'}) { + return ('grade', 'web'); + } else { + return ('web'); + } + } elsif ($ENV{'request.state'} eq "construct") { + if ( defined $ENV{'form.preview'}) { + if ( defined $ENV{'form.submitted'}) { + return ('grade', 'web'); + } else { + return ('web'); + } + } else { + return ('grade','web'); + if ( $ENV{'form.submitted'} eq 'edit' ) { + return ('modified','edit'); + } else { + return ('edit'); + } + } + } + return (); +} - $request->content_type('text/html'); - $request->send_http_header; - &Apache::lonhomework::send_header($request); - my $file = "/home/httpd/html".$request->uri; - my %mystyle; - &Apache::inputtags::initialize_inputtags; - my $result = Apache::lonxml::xmlparse("web",'/home/httpd/html/res/103/albertel/default_homework'.&getfile($file),%mystyle); - #$request->print("Result follows:"); - $request->print($result); - #$request->print(":Result ends"); - &Apache::lonhomework::send_footer($request); +sub setup_vars { + my ($target) = @_; + return ';' +# return ';$external::target='.$target.';'; } sub send_header { my ($request)= @_; - $request->print(''); - $request->print('
'); + $request->print(&Apache::lontexconvert::header()); + $ENV{'request.uri'}=$request->uri; +# $request->print(''); +} + +sub createmenu { + my ($which,$request)=@_; + if ($which eq 'grade') { + $request->print(''); + } } sub send_footer { my ($request)= @_; - $request->print('
'); - $request->print(''); +# $request->print(''); + $request->print(&Apache::lontexconvert::footer()); +} + +$Apache::lonxml::browse=''; +sub check_date { + my ($id) = @_; + my $date =''; + my $status = ''; + my $datemsg = ''; + my $lastdate = ''; + my $temp; + my $type; + my $passed; + &Apache::lonxml::debug("checking for part :$id:"); + foreach $temp ("opendate","duedate","answerdate") { + $lastdate = $date; + $date = &Apache::lonnet::EXT("resource.$id.$temp"); + &Apache::lonxml::debug("found :$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) { $status = 'CANNOT_ANSWER'; } + } + &Apache::lonxml::debug("sending back :$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'; + $datemsg='is closed but you are allowed to view it'; + } + if ($ENV{'request.state'} eq "construct") { + &Apache::lonxml::debug("in construction ignoring dates"); + $status='CAN_ANSWER'; + $datemsg='is in under construction'; + } + return ($status,$datemsg); +} + +sub showhash { + my (%hash) = @_; + my $resultkey; + foreach $resultkey (sort keys %hash) { + &Apache::lonxml::debug("$resultkey ---- $hash{$resultkey}"); + } + &Apache::lonxml::debug("\n
restored values^
\n"); + return ''; +} + +sub setuppermissions { + $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'}); + $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); + return '' } -sub getfile { - my ($filename) = @_; - my $a=""; - &Apache::lonnet::repcopy($filename); - { - my $fh=Apache::File->new($filename); +sub setupheader { + my $request=$_[0]; + if ($ENV{'browser.mathml'}) { + $request->content_type('text/xml'); + } else { + $request->content_type('text/html'); + } + $request->send_http_header; + return OK if $request->header_only; + &Apache::lonhomework::send_header($request); + return '' +} - while (<$fh>) { - $a .=$_; +sub renderpage { + my ($request,$file) = @_; + + my (@targets) = &get_target(); + foreach my $target (@targets) { + my $problem=&Apache::lonnet::getfile($file); + if ($problem == -1) { + &Apache::lonxml::error(" Unable to find $file"); + $problem=''; + } + + my %mystyle; + my $result = ''; + &Apache::inputtags::initialize_inputtags; + %Apache::lonhomework::results=(); + %Apache::lonhomework::history=&Apache::lonnet::restore(); + #ignore error conditions + my ($temp)=keys %Apache::lonhomework::history ; + if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); } + if ($target eq 'web') { + if (&Apache::lonnet::symbread() eq '') { + if ($ENV{'request.state'} eq "construct") { + $request->print("In construction space, submissions ignored
"); + } else { + $request->print("Browsing or ambiguous reference, submissions ignored
"); + } + } + if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); } + } + if ($target eq 'grade') { &showhash(%Apache::lonhomework::history); } + + my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm'); + if ($default == -1) { + &Apache::lonxml::error("Unable to find default_homework.lcpm"); + $default=''; + } + $result = &Apache::lonxml::xmlparse($target, $problem, + $default.&setup_vars($target),%mystyle); + + #$request->print("Result follows:"); + if ($target eq 'modified') { + my $fileout = &Apache::lonnet::filelocation("",$request->uri); + my $filesave=$fileout.".bak"; + + my $fs=Apache::File->new(">$filesave"); + print $fs $problem; + $request->print("Making Backup to $filesave
"); + + my $fh=Apache::File->new(">$fileout"); + print $fh $result; + $request->print("Saving Modifications to $fileout
"); + } else { + $request->print($result); + } + #$request->print(":Result ends"); + if ($target eq 'grade') { &showhash(%Apache::lonhomework::results); } + + #store new values + my ($temp) = keys %Apache::lonhomework::results; + if ( $temp ne '' ) { + &Apache::lonxml::debug("Store return message:". + &Apache::lonnet::cstore(\%Apache::lonhomework::results)); } } - return $a +} + +sub handler { + my $request=$_[0]; + + if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} + + if (&setupheader($request)) { return OK; } + + #setup permissions + $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'}); + $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); + &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:"); + + my $file=&Apache::lonnet::filelocation("",$request->uri); + + #check if we know where we are + if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) { + # if we are browsing we might not be able to know where we are + if ($Apache::lonhomework::browse ne 'F') { + #should know where we are, so ask + $request->internal_redirect('/adm/ambiguous'); return; + } + } + + if ($ENV{'request.state'} eq "construct") { + if ( -e $file ) { + if (!(defined $ENV{'form.showproblem'})) { + #first visit to problem in construction space + &view_or_edit_menu($request); + } else { + &renderpage($request,$file); + } + } else { + # requested file doesn't exist in contruction space + &newproblem($request); + } + } else { + # just render the page normally outside of construction space + &renderpage($request,$file); + } + + &Apache::lonhomework::send_footer($request); + # always turn off debug messages + $Apache::lonxml::debug=0; + return OK; + } 1;