--- loncom/homework/lonhomework.pm 2000/07/25 21:27:30 1.2 +++ loncom/homework/lonhomework.pm 2003/03/25 23:07:07 1.117 @@ -1,54 +1,670 @@ +# The LearningOnline Network with CAPA # The LON-CAPA Homework handler +# +# $Id: lonhomework.pm,v 1.117 2003/03/25 23:07:07 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::inputtags; -use Apache::structuretags; +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 ); -sub handler { - my $request=shift; +BEGIN { + &Apache::lonxml::register_insert(); +} - $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 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(''); - $request->print('
'); + $request->print(&Apache::lontexconvert::header()); +# $request->print(''); +} + +sub createmenu { + my ($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=''; + +# 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,$datemsg); +} + +sub showhash { + my (%hash) = @_; + &showhashsubset(\%hash,'.'); + return ''; } -sub getfile { - my ($filename) = @_; - my $a=""; - &Apache::lonnet::repcopy($filename); - { - my $fh=Apache::File->new($filename); +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 $string; +} - while (<$fh>) { - $a .=$_; +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}"); + } } } - return $a + &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 setupheader { + my $request=$_[0]; + if ($ENV{'browser.mathml'}) { + $request->content_type('text/xml'); + } else { + $request->content_type('text/html'); + } + if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) { + &Apache::loncommon::no_cache($request); + } + $request->send_http_header; + return OK if $request->header_only; + return '' +} + +sub handle_save_or_undo { + my ($request,$problem,$result) = @_; + my $file = &Apache::lonnet::filelocation("",$request->uri); + my $filebak =$file.".bak"; + my $filetmp =$file.".tmp"; + my $error=0; + + if ($ENV{'form.Undo'} eq 'undo') { + my $error=0; + if (!copy($file,$filetmp)) { $error=1; } + if ((!$error) && (!copy($filebak,$file))) { $error=1; } + if ((!$error) && (!move($filetmp,$filebak))) { $error=1; } + if (!$error) { + $request->print("

Undid 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 $$problem; + $request->print("Making Backup to $filebak
"); + } else { + $request->print("Unable to make backup $filebak"); + $error=2; + } + my $fh=Apache::File->new(">$file"); + if (defined($fh)) { + print $fh $$result; + $request->print("Saving Modifications to $file
"); + } else { + $request->print("Unable to write to $file"); + $error|=4; + } + } + return $error; +} + +sub analyze_header { + my ($request) = @_; + my $result.=' + Analyzing a problem + +
+ + +
+ +
+ List of possible answers: +
'; + $request->print($result); + $request->rflush(); +} + +sub analyze_footer { + my ($request) = @_; + my $result=''; + $request->print($result); + $request->rflush(); +} + +sub analyze { + my ($request,$file) = @_; + &Apache::lonxml::debug("Analyze"); + my $result; + my %overall; + my %allparts; + my $rndseed=$ENV{'form.rndseed'}; + &analyze_header($request); + my %prog_state= + &Apache::lonhtmlcommon::Create_PrgWin($request,'Analyze Progress', + 'Getting Problem Variants', + $ENV{'form.numtoanalyze'}); + for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) { + &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state, + 'last problem'); + my $subresult=&Apache::lonnet::ssi($request->uri, + ('grade_target' => 'analyze'), + ('rndseed' => $i)); + &Apache::lonxml::debug(":$subresult:"); + (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2); + my %analyze=&Apache::lonnet::str2hash($subresult); + my @parts; + if (defined(@{ $analyze{'parts'} })) { + @parts=@{ $analyze{'parts'} }; + } + foreach my $part (@parts) { + if (!exists($allparts{$part})) {$allparts{$part}=1;}; + if ($analyze{$part.'.type'} eq 'numericalresponse' || + $analyze{$part.'.type'} eq 'stringresponse' || + $analyze{$part.'.type'} eq 'formularesponse' ) { + push( @{ $overall{$part.'.answer'} }, + [@{ $analyze{$part.'.answer'} }]); + } + } + } + &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state, + 'Analyzing Results'); + foreach my $part (keys(%allparts)) { + if (defined(@{ $overall{$part.'.answer'} })) { + $request->print(''); + foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) { + $request->print(''); + } + $request->print('
Part '.$part.'
'.join('',@{ $answer }). + '
'); + } else { + $request->print('

Part '.$part. + ' is not analyzabale at this time

'); + } + } + &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state); + &analyze_footer($request); + &Apache::lonhomework::showhash(%overall); + return $result; +} + +sub editxmlmode { + my ($request,$file) = @_; + my $result; + my $problem=&Apache::lonnet::getfile($file); + if ($problem eq -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 $xml_help = '
'. + &Apache::loncommon::help_open_topic("Problem_Editor_XML_Index",'Problem Editing Help') + .''. + &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols', + undef,undef,600) + .''. + &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols', + undef,undef,600) + .'
'; + if ($cols > 80) { $cols = 80; } + if ($cols < 70) { $cols = 70; } + if ($rows < 20) { $rows = 20; } + $result.=' +
+ + + +
+ + + +
+ ' . $xml_help . ' + +
'; + $request->print($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 eq -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); + undef($Apache::lonhomework::parsing_a_problem); + #$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:::; + #$result.="
Spent $td seconds processing target $target\n"; + #} + $request->print($result); + $request->rflush(); + } + #$request->print(":Result ends"); + #my $td=&tv_interval($t0); + } +} + +# with no arg it returns a HTML \n'; + } + return $result; +} + +sub newproblem { + my ($request) = @_; + my $extension=$request->uri; + $extension=~s:^.*\.([\w]+)$:$1:; + &Apache::lonxml::debug("Looking for :$extension:"); + if ($ENV{'form.template'} && + $ENV{'form.template'} ne "Select a $extension type") { + use File::Copy; + my $file = &get_template_list($ENV{'form.template'},$extension); + my $dest = &Apache::lonnet::filelocation("",$request->uri); + copy($file,$dest); + &renderpage($request,$dest); + } elsif($ENV{'form.newfile'}) { + # I don't like hard-coded filenames but for now, this will work. + use File::Copy; + my $templatefilename = + $request->dir_config('lonIncludes').'/templates/blank.problem'; + &Apache::lonxml::debug("$templatefilename"); + my $dest = &Apache::lonnet::filelocation("",$request->uri); + copy($templatefilename,$dest); + &renderpage($request,$dest); + } else { + my $templatelist=&get_template_list('',$extension); + my $url=$request->uri; + my $dest = &Apache::lonnet::filelocation("",$request->uri); + my $instructions; + if ($templatelist) { $instructions=", select a template from the pull-down menu below.
Then";} + $request->print(< +

Creating a new $extension resource

+The requested file $url currently does not exist. +

+To create a new $extension$instructions click on the "Create $extension" button. +

+

+ENDNEWPROBLEM + if (defined($templatelist)) { + $request->print(""); + } + $request->print("
"); + $request->print("

"); + } + return ''; +} + +sub view_or_edit_menu { + my ($request) = @_; + my $url=$request->uri; + $request->print(< +
+Would you like to or + the problem. +
+ +EDITMENU +} + +sub handler { + #my $t0 = [&gettimeofday()]; + my $request=$_[0]; + +# if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} + $Apache::lonxml::debug=$ENV{'user.debug'}; + + if (&setupheader($request)) { return OK; } + $ENV{'request.uri'}=$request->uri; + + #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:"); + # some times multiple problemmodes are submitted, need to select + # the last one + &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'}); + if ( defined($ENV{'form.problemmode'}) && + ref($ENV{'form.problemmode'}) ) { + &Apache::lonxml::debug("Problem Mode ".join(",",@$ENV{'form.problemmode'})); + my $mode=$ENV{'form.problemmode'}->[-1]; + undef $ENV{'form.problemmode'}; + $ENV{'form.problemmode'}=$mode; + } + &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'}); + 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 ($ENV{'form.resetdata'} eq 'Reset Submissions') { + my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); + &Apache::lonnet::tmpreset($symb,'',$domain,$name); + } + if ( -e $file ) { + if (!(defined $ENV{'form.problemmode'})) { + #first visit to problem in construction space + #&view_or_edit_menu($request); + $ENV{'form.problemmode'}='View'; + &renderpage($request,$file); + } elsif ($ENV{'form.problemmode'} eq 'EditXML') { + &editxmlmode($request,$file); + } elsif ($ENV{'form.problemmode'} eq 'Answer Distribution') { + &analyze($request,$file); + } else { + &renderpage($request,$file); + } + } else { + # requested file doesn't exist in contruction space + &newproblem($request); + } + } else { + # just render the page normally outside of construction space + &Apache::lonxml::debug("not construct"); + &renderpage($request,$file); + } + #my $td=&tv_interval($t0); + #&Apache::lonxml::debug("Spent $td seconds processing"); + # &Apache::lonhomework::send_footer($request); + # always turn off debug messages + $Apache::lonxml::debug=0; + return OK; + } 1;