# The LearningOnline Network with CAPA # The LON-CAPA Homework handler # # $Id: lonhomework.pm,v 1.269 2007/08/18 00:01:45 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/ 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::chemresponse(); use Apache::drawimage(); use Apache::Constants qw(:common); use HTML::Entities(); use Apache::loncommon(); use Apache::lonlocal; use Time::HiRes qw( gettimeofday tv_interval ); use Apache::lonnet(); # FIXME - improve commenting BEGIN { &Apache::lonxml::register_insert(); } # # Decides what targets to render for. # Implicit inputs: # Various session environment variables: # request.state - published - is a /res/ resource # uploaded - is a /uploaded/ resource # contruct - is a /priv/ resource # form.grade_target - a form parameter requesting a specific target sub get_target { &Apache::lonxml::debug("request.state = $env{'request.state'}"); if( defined($env{'form.grade_target'})) { &Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}"); } else { &Apache::lonxml::debug("form.grade_target "); } if (($env{'request.state'} eq "published") || ($env{'request.state'} eq "uploaded")) { if ( defined($env{'form.grade_target'} ) && ($env{'form.grade_target'} eq 'tex')) { return ($env{'form.grade_target'}); } elsif ( defined($env{'form.grade_target'} ) && ($Apache::lonhomework::viewgrades eq 'F' )) { return ($env{'form.grade_target'}); } elsif ( $env{'form.grade_target'} eq 'webgrade' && ($Apache::lonhomework::queuegrade eq 'F' )) { return ($env{'form.grade_target'}); } if ($env{'form.webgrade'} && ($Apache::lonhomework::modifygrades eq 'F' || $Apache::lonhomework::queuegrade eq 'F' )) { return ('grade','webgrade'); } if ( defined($env{'form.submitted'}) && ( !defined($env{'form.newrandomization'}))) { return ('grade', 'web'); } else { return ('web'); } } elsif ($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 ($env{'form.problemstate'} eq 'WEB_GRADE') { #$env{'form.webgrade'} = 'yes'; return ('grade','webgrade','answer'); } elsif ( $env{'form.problemmode'} eq &mt('View') || $env{'form.problemmode'} eq &mt('Discard Edits and View')) { if ( defined($env{'form.submitted'}) && (!defined($env{'form.resetdata'})) && (!defined($env{'form.newrandomization'}))) { return ('grade', 'web','answer'); } else { return ('web','answer'); } } elsif ( $env{'form.problemmode'} eq &mt('Edit') || $env{'form.problemmode'} eq 'Edit') { if ( $env{'form.submitted'} eq 'edit' ) { if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) { return ('modified','web','answer'); } else { return ('modified','no_output_web','edit'); } } else { return ('no_output_web','edit'); } } else { return ('web'); } } } return (); } sub setup_vars { my ($target) = @_; return ';' # return ';$external::target='.$target.';'; } sub createmenu { my ($which,$request)=@_; if ($which eq 'grade') { $request->print(''); } } sub proctor_checked_in { my ($slot_name,$slot,$type)=@_; my @possible_proctors=split(",",$slot->{'proctor'}); return 1 if (!@possible_proctors); my $key; if ($type eq 'Task') { my $version=$Apache::lonhomework::history{'resource.0.version'}; $key ="resource.$version.0.checkedin"; } elsif ($type eq 'problem') { $key ='resource.0.checkedin'; } # backward compatability, used to be username@domain, # now is username:domain my $who = $Apache::lonhomework::history{$key}; if ($who !~ /:/) { $who =~ tr/@/:/; } foreach my $possible (@possible_proctors) { if ($who eq $possible && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) { return 1; } } return 0; } $Apache::lonxml::browse=''; sub check_ip_acc { my ($acc)=@_; &Apache::lonxml::debug("acc is $acc"); if (!defined($acc) || $acc =~ /^\s*$/ || $acc =~/^\s*no\s*$/i) { return 1; } my $allowed=0; my $ip=$ENV{'REMOTE_ADDR'}; my $name; foreach my $pattern (split(',',$acc)) { $pattern =~ s/^\s*//; $pattern =~ s/\s*$//; if ($pattern =~ /\*$/) { #35.8.* $pattern=~s/\*//; if ($ip =~ /^\Q$pattern\E/) { $allowed=1; } } elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) { #35.8.3.[34-56] my $low=$2; my $high=$3; $pattern=$1; if ($ip =~ /^\Q$pattern\E/) { my $last=(split(/\./,$ip))[3]; if ($last <=$high && $last >=$low) { $allowed=1; } } } elsif ($pattern =~ /^\*/) { #*.msu.edu $pattern=~s/\*//; if (!defined($name)) { use Socket; my $netaddr=inet_aton($ip); ($name)=gethostbyaddr($netaddr,AF_INET); } if ($name =~ /\Q$pattern\E$/i) { $allowed=1; } } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) { #127.0.0.1 if ($ip =~ /^\Q$pattern\E/) { $allowed=1; } } else { #some.name.com if (!defined($name)) { use Socket; my $netaddr=inet_aton($ip); ($name)=gethostbyaddr($netaddr,AF_INET); } if ($name =~ /\Q$pattern\E$/i) { $allowed=1; } } if ($allowed) { last; } } return $allowed; } sub check_slot_access { my ($id,$type)=@_; # does it pass normal muster my ($status,$datemsg)=&check_access($id); my $useslots = &Apache::lonnet::EXT("resource.0.useslots"); if ($useslots ne 'resource' && $useslots ne 'map' && $useslots ne 'map_map') { return ($status,$datemsg); } if ($status eq 'SHOW_ANSWER' || $status eq 'CLOSED' || $status eq 'INVALID_ACCESS' || $status eq 'UNAVAILABLE') { return ($status,$datemsg); } if ($env{'request.state'} eq "construct") { return ($status,$datemsg); } if ($type eq 'Task') { my $version=$Apache::lonhomework::history{'resource.version'}; if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} && $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') { return ('SHOW_ANSWER'); } } my @slots= (split(':',&Apache::lonnet::EXT("resource.0.availablestudent")), split(':',&Apache::lonnet::EXT("resource.0.available"))); # if (!@slots) { # return ($status,$datemsg); # } my $slotstatus='NOT_IN_A_SLOT'; my ($returned_slot,$slot_name); foreach my $slot (@slots) { $slot =~ s/(^\s*|\s*$)//g; &Apache::lonxml::debug("getting $slot"); my %slot=&Apache::lonnet::get_slot($slot); &Apache::lonhomework::showhash(%slot); if ($slot{'starttime'} < time && $slot{'endtime'} > time && &check_ip_acc($slot{'ip'})) { &Apache::lonxml::debug("$slot is good"); $slotstatus='NEEDS_CHECKIN'; $returned_slot=\%slot; $slot_name=$slot; last; } } if ($slotstatus eq 'NEEDS_CHECKIN' && &proctor_checked_in($slot_name,$returned_slot,$type)) { &Apache::lonxml::debug("protoctor checked in"); $slotstatus='CAN_ANSWER'; } my ($is_correct,$got_grade,$checkedin); if ($type eq 'Task') { my $version=$Apache::lonhomework::history{'resource.0.version'}; $got_grade = ($Apache::lonhomework::history{"resource.$version.0.status"} =~ /^(?:pass|fail)$/); $is_correct = ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass' || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ ); $checkedin = $Apache::lonhomework::history{"resource.$version.0.checkedin"}; } elsif ($type eq 'problem') { $got_grade = 1; $checkedin = $Apache::lonhomework::history{"resource.0.checkedin"}; $is_correct = ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/); } &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)"); # no slot is currently open, and has been checked in for this version # but hasn't got a grade, therefore must be awaiting a grade if (!defined($slot_name) && $checkedin && !$got_grade) { return ('WAITING_FOR_GRADE'); } # no slot is currently open, and has been checked in for this version # previous slot is therefore CLOSED, so therefore the problem is if (!defined($slot_name) && $checkedin && $type eq 'problem') { return ('CLOSED',$datemsg); } if ($slotstatus eq 'NOT_IN_A_SLOT' && $checkedin ) { if ($got_grade) { return ('SHOW_ANSWER'); } else { return ('WAITING_FOR_GRADE'); } } if ( $is_correct) { if ($type eq 'problem') { return ($status); } return ('SHOW_ANSWER'); } if ( $status eq 'CANNOT_ANSWER' && ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) { return ($status,$datemsg); } return ($slotstatus,$datemsg,$slot_name,$returned_slot); } # JB, 9/24/2002: Any changes in this function may require a change # in lonnavmaps::resource::getDateStatus. sub check_access { my ($id) = @_; my $date =''; my $status; my $datemsg = ''; my $lastdate = ''; my $type; my $passed; if ($env{'request.state'} eq "construct") { if ($env{'form.problemstate'}) { if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) { if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' && lc($Apache::lonhomework::problemstatus) eq 'no')) { return ('CANNOT_ANSWER', &mt('is in this state due to author settings.')); } } else { return ($env{'form.problemstate'}, &mt('is in this state due to author settings.')); } } &Apache::lonxml::debug("in construction ignoring dates"); $status='CAN_ANSWER'; $datemsg=&mt('is in under construction'); # return ($status,$datemsg); } &Apache::lonxml::debug("checking for part :$id:"); &Apache::lonxml::debug("time:".time); my ($symb)=&Apache::lonnet::whichuser(); &Apache::lonxml::debug("symb:".$symb); #if ($env{'request.state'} ne "construct" && $symb ne '') { if ($env{'request.state'} ne "construct") { my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc")); if (!$allowed && ($Apache::lonhomework::browse ne 'F')) { $status='INVALID_ACCESS'; $date=&mt("can not be accessed from your location."); return($status,$date); } foreach my $temp ("opendate","duedate","answerdate") { $lastdate = $date; if ($temp eq 'duedate') { $date = &due_date($id); } else { $date = &Apache::lonnet::EXT("resource.$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'; $date=&mt("may open later."); return($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 = &mt("an unknown date"); $passed = 0; } elsif ($date eq 'con_lost') { $date = &mt("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 = &mt("will open on")." $date"; } elsif ($type eq 'duedate') { $status='CAN_ANSWER'; $datemsg = &mt("is due at")." $date"; } elsif ($type eq 'answerdate') { $status='CLOSED'; $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date"; } } if ($status eq 'CAN_ANSWER' || (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) { #check #tries, and if correct. my $tries = $Apache::lonhomework::history{"resource.$id.tries"}; my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries"); if ( $tries eq '' ) { $tries = '0'; } if ( $maxtries eq '' && $env{'request.state'} ne 'construct') { $maxtries = '2'; } if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } # if (correct and show prob status) or excused then CANNOT_ANSWER if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/ && lc($Apache::lonhomework::problemstatus) ne 'no') || $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) { $status = 'CANNOT_ANSWER'; } } if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') { my $interval=&Apache::lonnet::EXT("resource.$id.interval"); &Apache::lonxml::debug("looking for interval $interval"); if ($interval) { my $first_access=&Apache::lonnet::get_first_access('map'); &Apache::lonxml::debug("looking for accesstime $first_access"); if (!$first_access) { $status='NOT_YET_VIEWED'; my $due_date = &due_date($id); my $seconds_left = $due_date - time; if ($seconds_left > $interval || $due_date eq '') { $seconds_left = $interval; } $datemsg=&seconds_to_human_length($seconds_left); } } } #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'; $datemsg=&mt('is closed but you are allowed to view it'); } return ($status,$datemsg); } # this should work exactly like the copy in lonnavmaps.pm sub due_date { my ($part_id,$symb,$udom,$uname)=@_; my $date; my $interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb, $udom,$uname); &Apache::lonxml::debug("looking for interval $part_id $symb $interval"); my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb, $udom,$uname); &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date"); if ($interval =~ /\d+/) { my $first_access=&Apache::lonnet::get_first_access('map',$symb); &Apache::lonxml::debug("looking for first_access $first_access"); if (defined($first_access)) { $interval = $first_access+$interval; $date = ($interval < $due_date)? $interval : $due_date; } else { $date = $due_date; } } else { $date = $due_date; } return $date } sub seconds_to_human_length { my ($length)=@_; my $seconds=$length%60; $length=int($length/60); my $minutes=$length%60; $length=int($length/60); my $hours=$length%24; $length=int($length/24); my $days=$length; my $timestr; if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); } if ($hours > 0) { $timestr.=($timestr?", ":""). &mt('[quant,_1,hour]',$hours); } if ($minutes > 0) { $timestr.=($timestr?", ":""). &mt('[quant,_1,minute]',$minutes); } if ($seconds > 0) { $timestr.=($timestr?", ":""). &mt('[quant,_1,second]',$seconds); } return $timestr; } sub showhash { my (%hash) = @_; &showhashsubset(\%hash,'.'); return ''; } sub showarray { my ($array)=@_; my $string="("; foreach my $elm (@{ $array }) { if (ref($elm) eq 'ARRAY') { $string.=&showarray($elm); } elsif (ref($elm) eq 'HASH') { $string.= "HASH --- \n
"; $string.= &showhashsubset($elm,'.'); } else { $string.="$elm," } } chop($string); $string.=")"; return $string; } sub showhashsubset { my ($hash,$keyre) = @_; my $resultkey; foreach $resultkey (sort keys %$hash) { if ($resultkey !~ /$keyre/) { next; } if (ref($$hash{$resultkey}) eq 'ARRAY' ) { &Apache::lonxml::debug("$resultkey ---- ". &showarray($$hash{$resultkey})); } elsif (ref($$hash{$resultkey}) eq 'HASH' ) { &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); &showhashsubset($$hash{$resultkey},'.'); } else { &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}"); } } &Apache::lonxml::debug("\n
restored values^
\n"); return ''; } sub setuppermissions { $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'}); my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}); if (! $viewgrades && exists($env{'request.course.sec'}) && $env{'request.course.sec'} !~ /^\s*$/) { $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}. '/'.$env{'request.course.sec'}); } $Apache::lonhomework::viewgrades = $viewgrades; if ($Apache::lonhomework::browse eq 'F' && $env{'form.devalidatecourseresdata'} eq 'on') { my (undef,$courseid) = &Apache::lonnet::whichuser(); &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"}, $env{"course.$courseid.domain"}); } my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'}); if (! $modifygrades && exists($env{'request.course.sec'}) && $env{'request.course.sec'} !~ /^\s*$/) { $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'}. '/'.$env{'request.course.sec'}); } $Apache::lonhomework::modifygrades = $modifygrades; my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'}); if (! $queuegrade && exists($env{'request.course.sec'}) && $env{'request.course.sec'} !~ /^\s*$/) { $queuegrade = &Apache::lonnet::allowed('qgr',$env{'request.course.id'}. '/'.$env{'request.course.sec'}); } $Apache::lonhomework::queuegrade = $queuegrade; return ''; } sub unset_permissions { undef($Apache::lonhomework::queuegrade); undef($Apache::lonhomework::modifygrades); undef($Apache::lonhomework::viewgrades); undef($Apache::lonhomework::browse); } sub setupheader { my $request=$_[0]; &Apache::loncommon::content_type($request,'text/html'); if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) { &Apache::loncommon::no_cache($request); } # $request->set_last_modified(&Apache::lonnet::metadata($request->uri, # 'lastrevisiondate')); $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 &mt('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) { &Apache::lonxml::info("

". &mt("Undid changes, Switched [_1] and [_2]", ''.$filebak. '', ''.$file. '')."

"); } else { &Apache::lonxml::info("

". &mt("Unable to undo, unable to switch [_1] and [_2]", ''. $filebak.'', ''. $file.'')."

"); $error=1; } } else { &Apache::lonnet::correct_line_ends($result); my $fs=Apache::File->new(">$filebak"); if (defined($fs)) { print $fs $$problem; &Apache::lonxml::info("".&mt("Making Backup to [_1]", ''. $filebak.''). ""); } else { &Apache::lonxml::info("". &mt("Unable to make backup [_1]", ''. $filebak.'').""); $error=2; } my $fh=Apache::File->new(">$file"); if (defined($fh)) { print $fh $$result; &Apache::lonxml::info("".&mt("Saving Modifications to [_1]", ''. $file.'' ).""); } else { &Apache::lonxml::info(''. &mt("Unable to write to [_1]", ''. $file.''). ''); $error|=4; } } return $error; } sub analyze_header { my ($request) = @_; my $result = &Apache::loncommon::start_page('Analyzing a problem',undef); $result .= &Apache::lonxml::message_location().'
'. &Apache::structuretags::remember_problem_state().'

'; &Apache::lonxml::add_messages(\$result); $request->print($result); $request->rflush(); } sub analyze_footer { my ($request) = @_; $request->print(&Apache::loncommon::end_page()); $request->rflush(); } sub analyze { my ($request,$file) = @_; &Apache::lonxml::debug("Analyze"); my $result; my %overall; my %seedexample; my %allparts; my $rndseed=$env{'form.rndseed'}; &analyze_header($request); my %prog_state= &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'), &mt('Getting Problem Variants'), $env{'form.numtoanalyze'}, 'inline',undef); for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) { &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state, &mt('last problem')); if (&Apache::loncommon::connection_aborted($request)) { return; } my $thisseed=$i+$rndseed; my $subresult=&Apache::lonnet::ssi($request->uri, ('grade_target' => 'analyze'), ('rndseed' => $thisseed)); (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' ) { foreach my $name (keys(%{ $analyze{$part.'.answer'} })) { my $i=0; foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) { push( @{ $overall{$part.'.answer'}[$i] }, $answer_part); my $concatanswer= join("\0",@{ $answer_part }); if (($concatanswer eq '') || ($concatanswer=~/^\@/)) { $answer_part = [''.&mt('Error').'']; } $seedexample{join("\0",$part,$i,@{$answer_part})}= $thisseed; $i++; } } } } } &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state, &mt('Analyzing Results')); $request->print('
'.&mt('List of possible answers').': '); foreach my $part (sort(keys(%allparts))) { if (defined(@{ $overall{$part.'.answer'} })) { for (my $i=0;$iprint(''); my %frequency; foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) { $frequency{join("\0",@{ $answer })}++; } $request->print(''); foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) { $request->print(''); } $request->print('
'.&mt('Part').' '.$part); if (scalar(@{ $overall{$part.'.answer'} }) > 1) { $request->print(&mt(' Answer [_1]',$i+1)); } $request->print('
'.&mt('Answer').''.&mt('Frequency').'
(' .&mt('click for example').')
'. join('',split("\0",$answer)). ''.$frequency{$answer}. '
'); } } else { $request->print('

'.&mt('Response').' '.$part.' '. &mt('is not analyzable at this time').'

'); } } if (scalar(keys(%allparts)) == 0 ) { $request->print('

'.&mt('Found no analyzable responses in this problem, currently only Numerical, Formula and String response styles are supported.').'

'); } &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(" ".&mt('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 &mt('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 $xml_help = '
'. &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index", "Problem Editing Help"). ''. &Apache::loncommon::help_open_menu(undef,undef,5,'Authoring'). '
'; if ($cols > 80) { $cols = 80; } if ($cols < 70) { $cols = 70; } if ($rows < 20) { $rows = 20; } my $js = &Apache::edit::js_change_detection(). &Apache::loncommon::resize_textarea_js(); my $start_page = &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js, {'no_auto_mt_title' => 1, 'only_body' => 1, 'add_entries' => { 'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')], 'onload' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')], }}); $result.=$start_page. &renderpage($request,$file,['no_output_web'],1). &Apache::lonxml::message_location().'
'. &Apache::structuretags::remember_problem_state().'

' . $xml_help . '
'.&Apache::loncommon::end_page(); &Apache::lonxml::add_messages(\$result); $request->print($result); } return ''; } # # Render the page in whatever target desired. # sub renderpage { my ($request,$file,$targets,$return_string) = @_; my @targets = @{$targets || [&get_target()]}; &Apache::lonhomework::showhashsubset(\%env,'form.'); &Apache::lonxml::debug("Running targets ".join(':',@targets)); my $overall_result; foreach my $target (@targets) { # FIXME need to do something intelligent when a problem goes # from viewable to not viewable due to map conditions #&setuppermissions(); #if ( $Apache::lonhomework::browse ne '2' # && $Apache::lonhomework::browse ne 'F' ) { # $request->print(" You most likely shouldn't see me."); #} #my $t0 = [&gettimeofday()]; my $output=1; if ($target eq 'no_output_web') { $target = 'web'; $output=0; } my $problem=&Apache::lonnet::getfile($file); my $result; if ($problem eq -1) { $problem=''; my $filename=(split('/',$file))[-1]; my $error = " ".&mt('Unable to find [_1]', ' '.$filename.'') .""; $result.= &Apache::loncommon::simple_error_page($request,'Not available', $error); return; } my %mystyle; if ($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($Apache::lonhomework::parsing_a_problem); if (!$output) { $result = ''; } #$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); $overall_result.=$result; # $request->rflush(); } #$request->print(":Result ends"); #my $td=&tv_interval($t0); } if (!$return_string) { &Apache::lonxml::add_messages(\$overall_result); $request->print($overall_result); $request->rflush(); } else { return $overall_result; } } # 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:"); my $templatelist=&get_template_list('',$extension); if ($env{'form.template'} && $env{'form.template'} ne "Select a $extension template") { 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($env{'form.newfile'} && !$templatelist) { # I don't like hard-coded filenames but for now, this will work. use File::Copy; my $templatefilename = $request->dir_config('lonIncludes').'/templates/blank.'.$extension; &Apache::lonxml::debug("$templatefilename"); my $dest = &Apache::lonnet::filelocation("",$request->uri); copy($templatefilename,$dest); &renderpage($request,$dest); } else { my $url=&HTML::Entities::encode($request->uri,'<>&"'); my $shownurl=$url; $shownurl=~s-^/~-/priv/-; my $dest = &Apache::lonnet::filelocation("",$request->uri); my $errormsg; if ($env{'form.newfile'}) { $errormsg='

'.&mt('You did not select a template.').'

'."\n"; } my $instructions; my $start_page = &Apache::loncommon::start_page("Create New $extension"); $request->print(" $start_page

".&mt("Creating a new $extension resource.")."

$errormsg ".&mt("The requested file [_1] currently does not exist.", "$shownurl")."

".&mt("To create a new $extension, select a template from the". "pull-down menu below. Then click on the \"Create $extension\" button.")."

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

".&Apache::loncommon::end_page()); } return ''; } sub update_construct_style { if ($env{'request.state'} eq "construct" && $env{'form.problemmode'} eq &mt('View') && defined($env{'form.submitted'}) && !defined($env{'form.resetdata'}) && !defined($env{'form.newrandomization'})) { if ((!$env{'form.style_file'} && $env{'construct.style'}) ||$env{'form.clear_style_file'}) { &Apache::lonnet::delenv('construct\\.style'); } elsif ($env{'form.style_file'} && $env{'construct.style'} ne $env{'form.style_file'}) { &Apache::lonnet::appenv('construct.style' => $env{'form.style_file'}); } } } sub handler { #my $t0 = [&gettimeofday()]; my $request=$_[0]; $Apache::lonxml::request=$request; $Apache::lonxml::debug=$env{'user.debug'}; $env{'request.uri'}=$request->uri; &setuppermissions(); # some times multiple problemmodes are submitted, need to select # the last one if ( defined($env{'form.problemmode'}) && ref($env{'form.problemmode'}) ) { my $mode=$env{'form.problemmode'}->[-1]; undef $env{'form.problemmode'}; $env{'form.problemmode'}=$mode; } 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' && $env{'request.state'} ne "construct") { #should know where we are, so ask &unset_permissions(); $request->internal_redirect('/adm/ambiguous'); return OK; } } if (&setupheader($request)) { &unset_permissions(); return OK; } &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade"); &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'}); my ($symb) = &Apache::lonnet::whichuser(); &Apache::lonxml::debug('symb is '.$symb); if ($env{'request.state'} eq "construct") { if ( -e $file ) { &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, ['problemmode']); if (!(defined $env{'form.problemmode'})) { #first visit to problem in construction space $env{'form.problemmode'}='View'; &renderpage($request,$file); } elsif ($env{'form.problemmode'} eq &mt('EditXML') || $env{'form.problemmode'} eq 'EditXML') { &editxmlmode($request,$file); } elsif ($env{'form.problemmode'} eq &mt('Calculate answers')) { &analyze($request,$file); } else { &update_construct_style(); &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"); # always turn off debug messages $Apache::lonxml::debug=0; &unset_permissions(); return OK; } 1; __END__