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Diff for /loncom/homework/lonhomework.pm between versions 1.258 and 1.302

version 1.258, 2006/09/25 19:41:56 version 1.302, 2009/02/17 15:25:18
Line 49  use Apache::matchresponse(); Line 49  use Apache::matchresponse();
 use Apache::chemresponse();  use Apache::chemresponse();
 use Apache::drawimage();  use Apache::drawimage();
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use HTML::Entities();  
 use Apache::loncommon();  use Apache::loncommon();
 use Apache::lonlocal;  use Apache::lonlocal;
 use Time::HiRes qw( gettimeofday tv_interval );  use Time::HiRes qw( gettimeofday tv_interval );
 use Apache::lonnet();  use HTML::Entities();
   use File::Copy();
   
 # FIXME - improve commenting  # FIXME - improve commenting
   
Line 63  BEGIN { Line 63  BEGIN {
 }  }
   
   
   =pod
   
   =item set_bubble_lines()
   
   Called at analysis time to set the bubble lines
   hash for the problem.. This should be called in the
   end_problemtype tag in analysis mode.
   
   We fetch the hash of part id counters from lonxml
       and push them into analyze:{part_id.bubble_lines}.
   
   =cut
   
   sub set_bubble_lines {
       my %bubble_counters = &Apache::lonxml::get_bubble_line_hash();
   
       foreach my $key (keys(%bubble_counters)) {
    $Apache::lonhomework::analyze{"$key.bubble_lines"} =
       $bubble_counters{"$key"};
       }
   }
   
 #  #
 # Decides what targets to render for.  # Decides what targets to render for.
 # Implicit inputs:  # Implicit inputs:
Line 96  sub get_target { Line 118  sub get_target {
     return ('grade','webgrade');      return ('grade','webgrade');
  }   }
  if ( defined($env{'form.submitted'}) &&   if ( defined($env{'form.submitted'}) &&
      ( !defined($env{'form.resetdata'})) &&  
      ( !defined($env{'form.newrandomization'}))) {       ( !defined($env{'form.newrandomization'}))) {
     return ('grade', 'web');      return ('grade', 'web');
  } else {   } else {
Line 113  sub get_target { Line 134  sub get_target {
  return ('web');   return ('web');
     }      }
  } else {   } else {
     if ( $env{'form.problemmode'} eq &mt('View') ||      if ($env{'form.problemstate'} eq 'WEB_GRADE') {
  $env{'form.problemmode'} eq &mt('Discard Edits and View')) {   #$env{'form.webgrade'} = 'yes';
    return ('grade','webgrade','answer');
       } elsif (($env{'form.problemmode'} eq 'view') ||
        ($env{'form.problemmode'} eq 'discard')) {
  if ( defined($env{'form.submitted'}) &&   if ( defined($env{'form.submitted'}) &&
      (!defined($env{'form.resetdata'})) &&       (!defined($env{'form.resetdata'})) &&
      (!defined($env{'form.newrandomization'}))) {       (!defined($env{'form.newrandomization'}))) {
Line 122  sub get_target { Line 146  sub get_target {
  } else {   } else {
     return ('web','answer');      return ('web','answer');
  }   }
     } elsif ( $env{'form.problemmode'} eq &mt('Edit') ||      } elsif ($env{'form.problemmode'} eq 'edit') {
       $env{'form.problemmode'} eq 'Edit') {  
  if ( $env{'form.submitted'} eq 'edit' ) {   if ( $env{'form.submitted'} eq 'edit' ) {
     if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {      if ( $env{'form.submitbutton'} eq &mt('Save and View') ) {
  return ('modified','web','answer');   return ('modified','web','answer');
     } else {      } else {
  return ('modified','no_output_web','edit');   return ('modified','no_output_web','edit');
Line 186  sub proctor_checked_in { Line 209  sub proctor_checked_in {
     return 0;      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 {  sub check_slot_access {
     my ($id,$type)=@_;      my ($id,$type)=@_;
   
Line 268  sub check_slot_access { Line 239  sub check_slot_access {
  }   }
     }      }
   
     my @slots=      my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent");
  (split(':',&Apache::lonnet::EXT("resource.0.availablestudent")),      my $available = &Apache::lonnet::EXT("resource.0.available");
  split(':',&Apache::lonnet::EXT("resource.0.available")));      my @slots= (split(':',$availablestudent),split(':',$available));
   
 #    if (!@slots) {  #    if (!@slots) {
 # return ($status,$datemsg);  # return ($status,$datemsg);
Line 284  sub check_slot_access { Line 255  sub check_slot_access {
  &Apache::lonhomework::showhash(%slot);   &Apache::lonhomework::showhash(%slot);
  if ($slot{'starttime'} < time &&   if ($slot{'starttime'} < time &&
     $slot{'endtime'} > time &&      $slot{'endtime'} > time &&
     &check_ip_acc($slot{'ip'})) {      &Apache::loncommon::check_ip_acc($slot{'ip'})) {
     &Apache::lonxml::debug("$slot is good");      &Apache::lonxml::debug("$slot is good");
     $slotstatus='NEEDS_CHECKIN';      $slotstatus='NEEDS_CHECKIN';
     $returned_slot=\%slot;      $returned_slot=\%slot;
Line 374  sub check_access { Line 345  sub check_access {
     if ($env{'request.state'} eq "construct") {      if ($env{'request.state'} eq "construct") {
  if ($env{'form.problemstate'}) {   if ($env{'form.problemstate'}) {
     if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {      if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
  if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&   if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' 
  lc($Apache::lonhomework::problemstatus) eq 'no')) {   && &hide_problem_status())) {
     return ('CANNOT_ANSWER',      return ('CANNOT_ANSWER',
     &mt('is in this state due to author settings.'));      &mt('is in this state due to author settings.'));
  }   }
Line 393  sub check_access { Line 364  sub check_access {
     &Apache::lonxml::debug("checking for part :$id:");      &Apache::lonxml::debug("checking for part :$id:");
     &Apache::lonxml::debug("time:".time);      &Apache::lonxml::debug("time:".time);
   
     my ($symb)=&Apache::lonxml::whichuser();      my ($symb)=&Apache::lonnet::whichuser();
     &Apache::lonxml::debug("symb:".$symb);      &Apache::lonxml::debug("symb:".$symb);
     #if ($env{'request.state'} ne "construct" && $symb ne '') {      #if ($env{'request.state'} ne "construct" && $symb ne '') {
     if ($env{'request.state'} ne "construct") {      if ($env{'request.state'} ne "construct") {
  my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));          my $idacc = &Apache::lonnet::EXT("resource.$id.acc");
    my $allowed=&Apache::loncommon::check_ip_acc($idacc);
  if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {   if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
     $status='INVALID_ACCESS';      $status='INVALID_ACCESS';
     $date=&mt("can not be accessed from your location.");      $date=&mt("can not be accessed from your location.");
Line 434  sub check_access { Line 406  sub check_access {
  $date = &mt("an indeterminate date"); $passed = 0;   $date = &mt("an indeterminate date"); $passed = 0;
     } else {      } else {
  if (time < $date) { $passed = 0; } else { $passed = 1; }   if (time < $date) { $passed = 0; } else { $passed = 1; }
  $date = localtime $date;   $date = &Apache::lonlocal::locallocaltime($date);
     }      }
     if (!$passed) { $type=$temp; last; }      if (!$passed) { $type=$temp; last; }
  }   }
Line 465  sub check_access { Line 437  sub check_access {
  # if (correct and show prob status) or excused then CANNOT_ANSWER   # if (correct and show prob status) or excused then CANNOT_ANSWER
  if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/   if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
     &&      &&
     lc($Apache::lonhomework::problemstatus) ne 'no')      &show_problem_status())
    ||     ||
    $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {     $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
     $status = 'CANNOT_ANSWER';      $status = 'CANNOT_ANSWER';
  }   }
    if ($status eq 'CANNOT_ANSWER'
       && &show_answer_problem_status()) {
       $status = 'SHOW_ANSWER';
    }
     }      }
     if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {      if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
  my $interval=&Apache::lonnet::EXT("resource.$id.interval");   my @interval=&Apache::lonnet::EXT("resource.$id.interval");
  &Apache::lonxml::debug("looking for interval $interval");   &Apache::lonxml::debug("looking for interval @interval");
  if ($interval) {   if ($interval[0]) {
     my $first_access=&Apache::lonnet::get_first_access('map');      my $first_access=&Apache::lonnet::get_first_access($interval[1]);
     &Apache::lonxml::debug("looking for accesstime $first_access");      &Apache::lonxml::debug("looking for accesstime $first_access");
     if (!$first_access) {      if (!$first_access) {
  $status='NOT_YET_VIEWED';   $status='NOT_YET_VIEWED';
  my $due_date = &due_date($id);   my $due_date = &due_date($id);
  my $seconds_left = $due_date - time;   my $seconds_left = $due_date - time;
  if ($seconds_left > $interval || $due_date eq '') {   if ($seconds_left > $interval[0] || $due_date eq '') {
     $seconds_left = $interval;      $seconds_left = $interval[0];
  }   }
  $datemsg=&seconds_to_human_length($seconds_left);   $datemsg=&seconds_to_human_length($seconds_left);
     }      }
Line 508  sub check_access { Line 484  sub check_access {
 sub due_date {  sub due_date {
     my ($part_id,$symb,$udom,$uname)=@_;      my ($part_id,$symb,$udom,$uname)=@_;
     my $date;      my $date;
     my $interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,      my @interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
        $udom,$uname);         $udom,$uname);
     &Apache::lonxml::debug("looking for interval $part_id $symb $interval");      &Apache::lonxml::debug("looking for interval $part_id $symb @interval");
     my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,      my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
        $udom,$uname);         $udom,$uname);
     &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");      &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
     if ($interval =~ /\d+/) {      if ($interval[0] =~ /\d+/) {
  my $first_access=&Apache::lonnet::get_first_access('map',$symb);   my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
  &Apache::lonxml::debug("looking for first_access $first_access");   &Apache::lonxml::debug("looking for first_access $first_access ($interval[1])");
  if (defined($first_access)) {   if (defined($first_access)) {
     $interval = $first_access+$interval;      my $interval = $first_access+$interval[0];
     $date = ($interval < $due_date)? $interval : $due_date;      $date = (!$due_date || $interval < $due_date) ? $interval
                                                             : $due_date;
  } else {   } else {
     $date = $due_date;      $date = $due_date;
  }   }
Line 604  sub setuppermissions { Line 581  sub setuppermissions {
   
     if ($Apache::lonhomework::browse eq 'F' &&       if ($Apache::lonhomework::browse eq 'F' && 
  $env{'form.devalidatecourseresdata'} eq 'on') {   $env{'form.devalidatecourseresdata'} eq 'on') {
  my (undef,$courseid) = &Apache::lonxml::whichuser();   my (undef,$courseid) = &Apache::lonnet::whichuser();
  &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},   &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
       $env{"course.$courseid.domain"});        $env{"course.$courseid.domain"});
     }      }
Line 657  sub handle_save_or_undo { Line 634  sub handle_save_or_undo {
     my $filebak =$file.".bak";      my $filebak =$file.".bak";
     my $filetmp =$file.".tmp";      my $filetmp =$file.".tmp";
     my $error=0;      my $error=0;
   
     &Apache::lonnet::correct_line_ends($result);  
   
     if ($env{'form.Undo'} eq &mt('undo')) {      if ($env{'form.Undo'} eq &mt('undo')) {
  my $error=0;   my $error=0;
  if (!copy($file,$filetmp)) { $error=1; }   if (!&File::Copy::copy($file,$filetmp)) { $error=1; }
  if ((!$error) && (!copy($filebak,$file))) { $error=1; }   if ((!$error) && (!&File::Copy::copy($filebak,$file))) { $error=1; }
  if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }   if ((!$error) && (!&File::Copy::move($filetmp,$filebak))) { $error=1; }
  if (!$error) {   if (!$error) {
     &Apache::lonxml::info("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");      &Apache::lonxml::info("<p><b>".
     &mt("Undid changes, Switched [_1] and [_2]",
         '<span class="LC_filename">'.$filebak.
         '</span>',
         '<span class="LC_filename">'.$file.
         '</span>')."</b></p>");
  } else {   } else {
     &Apache::lonxml::info("<p><font color=\"red\" size=\"+1\"><b>".&mt("Unable to undo, unable to switch")." $filebak ".&mt("and")." $file</b></font></p>");      &Apache::lonxml::info("<p><span class=\"LC_error\">".
     &mt("Unable to undo, unable to switch [_1] and [_2]",
         '<span class="LC_filename">'.
         $filebak.'</span>',
         '<span class="LC_filename">'.
         $file.'</span>')."</span></p>");
     $error=1;      $error=1;
  }   }
     } else {      } else {
           &Apache::lonnet::correct_line_ends($result);
  my $fs=Apache::File->new(">$filebak");   my $fs=Apache::File->new(">$filebak");
  if (defined($fs)) {   if (defined($fs)) {
     print $fs $$problem;      print $fs $$problem;
     &Apache::lonxml::info("<b>".&mt("Making Backup to").  
   " $filebak</b>");  
  } else {   } else {
     &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");      &Apache::lonxml::info("<span class=\"LC_error\">".
     &mt("Unable to make backup [_1]",
         '<span class="LC_filename">'.
         $filebak.'</span>')."</span>");
     $error=2;      $error=2;
  }   }
  my $fh=Apache::File->new(">$file");   my $fh=Apache::File->new(">$file");
  if (defined($fh)) {   if (defined($fh)) {
     print $fh $$result;      print $fh $$result;
     &Apache::lonxml::info("<b>".&mt("Saving Modifications to").  
   " $file</b>");  
  } else {   } else {
     &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".      &Apache::lonxml::info('<span class="LC_error">'.
   &mt("Unable to write to")." $file</b></font>");    &mt("Unable to write to [_1]",
         '<span class="LC_filename">'.
         $file.'</span>').
     '</span>');
     $error|=4;      $error|=4;
  }   }
     }      }
Line 697  sub handle_save_or_undo { Line 684  sub handle_save_or_undo {
   
 sub analyze_header {  sub analyze_header {
     my ($request) = @_;      my ($request) = @_;
       my $js = &Apache::structuretags::setmode_javascript();
     my $result =      my $result =
  &Apache::loncommon::start_page('Analyzing a problem',undef);   &Apache::loncommon::start_page('Analyzing a problem',$js);
   
     $result .=       $result .= 
  &Apache::lonxml::message_location().'   &Apache::lonxml::message_location().'
             <form name="lonhomework" method="POST" action="'.              <form name="lonhomework" method="POST" action="'.
     &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.      &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
               '<input type="hidden" name="problemmode" value="'.
               $env{'form.problemmode'}.'" />'.
     &Apache::structuretags::remember_problem_state().'      &Apache::structuretags::remember_problem_state().'
             <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />              <div class="LC_edit_problem_analyze_header">
             <input type="submit" name="problemmode" value="'.&mt('Edit').'" />              <input type="button" name="submitmode" value="'.&mt("EditXML").'" '.
             <hr />              'onclick="javascript:setmode(this.form,'."'editxml'".')" />
             <input type="submit" name="submit" value="'.&mt("View").'" />              <input type="button" name="submitmode" value="'.&mt('Edit').'" '.
             <hr />              'onclick="javascript:setmode(this.form,'."'edit'".')" />
               <hr class="LC_edit_problem_divide" />
               <input type="button" name="submitmode" value="'.&mt("View").'" '.
               'onclick="javascript:setmode(this.form,'."'view'".')" />
               <hr class="LC_edit_problem_divide" />
               </div>
             </form>';              </form>';
     &Apache::lonxml::add_messages(\$result);      &Apache::lonxml::add_messages(\$result);
     $request->print($result);      $request->print($result);
Line 755  sub analyze { Line 750  sub analyze {
     if ($analyze{$part.'.type'} eq 'numericalresponse' ||      if ($analyze{$part.'.type'} eq 'numericalresponse' ||
  $analyze{$part.'.type'} eq 'stringresponse' ||   $analyze{$part.'.type'} eq 'stringresponse' ||
  $analyze{$part.'.type'} eq 'formularesponse'   ) {   $analyze{$part.'.type'} eq 'formularesponse'   ) {
  my $concatanswer=join("\0",@{ $analyze{$part.'.answer'} });   foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
  if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {      my $i=0;
     @{$analyze{$part.'.answer'}}=('<font color="red">'.&mt('Error').'</font>');      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 = ['<span class="LC_error">'.&mt('Error').'</span>'];
    }
    $seedexample{join("\0",$part,$i,@{$answer_part})}=
       $thisseed;
    $i++;
       }
    }
    if (!keys(%{ $analyze{$part.'.answer'} })) {
       my $answer_part = 
    ['<span class="LC_error">'.&mt('Error').'</span>'];
       $seedexample{join("\0",$part,0,@{$answer_part})}=
    $thisseed;
       push( @{ $overall{$part.'.answer'}[0] },
     $answer_part);
  }   }
  push( @{ $overall{$part.'.answer'} },  
       [@{ $analyze{$part.'.answer'} }]);  
                 $seedexample{join("\0",@{ $analyze{$part.'.answer'}})}=$thisseed;  
     }      }
  }   }
     }      }
     &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,      &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
   &mt('Analyzing Results'));    &mt('Analyzing Results'));
     $request->print('<hr />'.&mt('List of possible answers').': ');      $request->print('<hr class="LC_edit_problem_divide" />'.&mt('List of possible answers').': ');
     foreach my $part (sort(keys(%allparts))) {      foreach my $part (sort(keys(%allparts))) {
  if (defined(@{ $overall{$part.'.answer'} })) {   if (defined(@{ $overall{$part.'.answer'} })) {
     my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });      for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
     $request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</th></tr>');   my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
     my %frequency;   $request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part);
     foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {   if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
  $frequency{join("\0",@{ $answer })}++;      $request->print(&mt(' Answer [_1]',$i+1));
     }   }
     $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('   $request->print('</th></tr>');
     .&mt('click for example').')</th></tr>');   my %frequency;
     foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {   foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
  $request->print('<tr><td class="center">'.      $frequency{join("\0",@{ $answer })}++;
  join('</td><td class="center">',split("\0",$answer)).   }
  '</td><td class="center"><a href="'.$request->uri.'?rndseed='.$seedexample{$answer}.'">'.$frequency{$answer}.   $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('
  '</a></td></tr>');   .&mt('click for example').')</th></tr>');
    foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
       $request->print('<tr><td class="center">'.
       join('</td><td class="center">',split("\0",$answer)).
       '</td><td class="center"><a href="'.$request->uri.'?rndseed='.$seedexample{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.
       '</a></td></tr>');
    }
    $request->print('</table>');
     }      }
     $request->print('</table>');  
  } else {   } else {
     $request->print('<p>'.&mt('Response').' '.$part.' '.      $request->print('<p>'.&mt('Response').' '.$part.' '.
     &mt('is not analyzable at this time').'</p>');      &mt('is not analyzable at this time').'</p>');
Line 799  sub analyze { Line 815  sub analyze {
     return $result;      return $result;
 }  }
   
   {
       my $show_problem_status;
       sub reset_show_problem_status {
    undef($show_problem_status);
       }
   
       sub set_show_problem_status {
    my ($new_status) = @_;
    $show_problem_status = lc($new_status);
       }
   
       sub hide_problem_status {
    return ($show_problem_status eq 'no'
    || $show_problem_status eq 'no_feedback_ever');
       }
   
       sub show_problem_status {
    return ($show_problem_status eq 'yes'
    || $show_problem_status eq 'answer'
    || $show_problem_status eq '');
       }
       
       sub show_some_problem_status {
    return ($show_problem_status eq 'no');
       }
   
       sub show_no_problem_status {
    return ($show_problem_status eq 'no_feedback_ever');
       }
     
       sub show_answer_problem_status {
    return ($show_problem_status eq 'answer');
       }
   }
   
 sub editxmlmode {  sub editxmlmode {
     my ($request,$file) = @_;      my ($request,$file) = @_;
     my $result;      my $result;
Line 814  sub editxmlmode { Line 865  sub editxmlmode {
  if (!$error) { $problem=&Apache::lonnet::getfile($file); }   if (!$error) { $problem=&Apache::lonnet::getfile($file); }
     }      }
     &Apache::lonhomework::showhashsubset(\%env,'^form');      &Apache::lonhomework::showhashsubset(\%env,'^form');
     if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {      if ( $env{'form.submitbutton'} eq &mt('Save and View') ) {
  &Apache::lonhomework::showhashsubset(\%env,'^form');   &Apache::lonhomework::showhashsubset(\%env,'^form');
  $env{'form.problemmode'}='View';   $env{'form.problemmode'}='view';
  &renderpage($request,$file);   &renderpage($request,$file);
     } else {      } else {
  my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);   my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
Line 829  sub editxmlmode { Line 880  sub editxmlmode {
  if ($cols > 80) { $cols = 80; }   if ($cols > 80) { $cols = 80; }
  if ($cols < 70) { $cols = 70; }   if ($cols < 70) { $cols = 70; }
  if ($rows < 20) { $rows = 20; }   if ($rows < 20) { $rows = 20; }
    my $js =
       &Apache::edit::js_change_detection(). 
       &Apache::loncommon::resize_textarea_js().
               &Apache::structuretags::setmode_javascript().
               &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
    my $only_body =  ($env{'environment.remote'} eq 'off')? 0 : 1;
    my $dragmath_button = 
               &Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
  my $start_page =    my $start_page = 
     &Apache::loncommon::start_page("EditXML $file",      &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
    &Apache::edit::js_change_detection());     {'no_auto_mt_title' => 1,
       'only_body'        => $only_body,
       'add_entries'      => {
    'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
    'onload'   => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
       }});
  $result.=$start_page.   $result.=$start_page.
     &renderpage($request,$file,['no_output_web'],1).      &renderpage($request,$file,['no_output_web'],1).
     &Apache::lonxml::message_location().'              '<form '.&Apache::edit::form_change_detection().' name="lonhomework" method="POST" action="'.
             <form '.&Apache::edit::form_change_detection().' name="lonhomework" method="POST" action="'.  
     &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.      &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
     &Apache::structuretags::remember_problem_state().'      &Apache::structuretags::remember_problem_state().'
             <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />              <div class="LC_edit_problem_editxml_header">
             <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />                <table class="LC_edit_problem_header_title"><tr><td>
             <input type="submit" '.&Apache::edit::submit_ask_anyway().'name="problemmode" accesskey="e" value="'.&mt('Edit').'" />                 '.&mt('Problem Editing').&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').'
             <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />                  </td><td align="right">
             <hr />                    '.&Apache::loncommon::helpLatexCheatsheet('Problem_LON-CAPA_Functions','Script Functions').'
             <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />                  </td></tr>
             <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />                </table>
             <hr />                <div class="LC_edit_problem_discards">
             ' . $xml_help . '                  <input type="hidden" name="problemmode" value="editxml" />
             <textarea '.&Apache::edit::element_change_detection().' style="width:100%" rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.  
     &HTML::Entities::encode($problem,'<>&"').'</textarea><br />                  <input type="button" name="submitmode" accesskey="d" value="'.&mt('Discard Edits and View').'" '.
             <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />                  'onclick="javascript:setmode(this.form,'."'discard'".')" />
             <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />                  <input type="button" '.&Apache::edit::submit_ask_anyway('setmode(this.form,'."'edit'".')').'name="submitmode" accesskey="e" value="'.&mt('Edit').'" />
                   <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
                   '.$dragmath_button.'
                 </div>
                 <div class="LC_edit_problem_saves">
                   <input type="submit" name="submitbutton" accesskey="s" value="'.&mt('Save').'"  />
                   <input type="submit" name="submitbutton" accesskey="v" value="'.&mt('Save and View').'" />
                 </div>
                 <hr class="LC_edit_problem_divide" />
         '.&Apache::lonxml::message_location().'
               </div>
               '  . '
               <textarea '.&Apache::edit::element_change_detection().
                 ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" '.
         ' name="editxmltext" id="LC_editxmltext">'.
         &HTML::Entities::encode($problem,'<>&"').'</textarea>
               <div id="LC_aftertextarea">
               </div>
             </form>'.&Apache::loncommon::end_page();              </form>'.&Apache::loncommon::end_page();
  &Apache::lonxml::add_messages(\$result);   &Apache::lonxml::add_messages(\$result);
  $request->print($result);   $request->print($result);
Line 868  sub renderpage { Line 947  sub renderpage {
     my @targets = @{$targets || [&get_target()]};      my @targets = @{$targets || [&get_target()]};
     &Apache::lonhomework::showhashsubset(\%env,'form.');      &Apache::lonhomework::showhashsubset(\%env,'form.');
     &Apache::lonxml::debug("Running targets ".join(':',@targets));      &Apache::lonxml::debug("Running targets ".join(':',@targets));
   
     my $overall_result;      my $overall_result;
     foreach my $target (@targets) {      foreach my $target (@targets) {
  # FIXME need to do something intelligent when a problem goes   # FIXME need to do something intelligent when a problem goes
Line 885  sub renderpage { Line 965  sub renderpage {
  my $problem=&Apache::lonnet::getfile($file);   my $problem=&Apache::lonnet::getfile($file);
  my $result;   my $result;
  if ($problem eq -1) {   if ($problem eq -1) {
     my $filename=(split('/',$file))[-1];  
     $result.="<b> ".&mt('Unable to find')." <i>$filename</i></b>";  
     $problem='';      $problem='';
       my $filename=(split('/',$file))[-1];
       my $error =
    "<b> ".&mt('Unable to find [_1]',
      ' <span class="LC_filename">'.$filename.'</span>')
    ."</b>";
       $result.=
    &Apache::loncommon::simple_error_page($request,'Not available',
         $error);
       return;
  }   }
   
  my %mystyle;   my %mystyle;
Line 898  sub renderpage { Line 985  sub renderpage {
  &Apache::lonxml::debug("Should be parsing now");   &Apache::lonxml::debug("Should be parsing now");
  $result .= &Apache::lonxml::xmlparse($request, $target, $problem,   $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
      &setup_vars($target),%mystyle);       &setup_vars($target),%mystyle);
  undef($Apache::lonhomework::parsing_a_problem);   &finished_parsing();
  if (!$output) { $result = ''; }   if (!$output) { $result = ''; }
  #$request->print("Result follows:");   #$request->print("Result follows:");
  if ($target eq 'modified') {   if ($target eq 'modified') {
Line 929  sub renderpage { Line 1016  sub renderpage {
     }      }
 }  }
   
 # with no arg it returns a HTML <option> list of the template titles  sub finished_parsing {
 # with one arg it returns the filename associated with the arg passed      undef($Apache::lonhomework::parsing_a_problem);
       undef($Apache::lonhomework::parsing_a_task);
   }
   
 sub get_template_list {  sub get_template_list {
     my ($namewanted,$extension) = @_;      my ($extension) = @_;
     my $result;      my $result;
     my @allnames;      my @allnames;
     &Apache::lonxml::debug("Looking for :$extension:");      &Apache::lonxml::debug("Looking for :$extension:");
     foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {      my $glob_extension  = $extension;
  my $name=&Apache::lonnet::metadata($file,'title');      if ($extension eq 'survey' || $extension eq 'exam') {
  if ($namewanted && ($name eq $namewanted)) {   $glob_extension = 'problem';
     $result=$file;      }
     last;      my @files = glob($Apache::lonnet::perlvar{'lonIncludes'}.
  } else {       '/templates/*.'.$glob_extension);
     if ($name) { push (@allnames, $name); }      @files = map {[$_,&mt(&Apache::lonnet::metadata($_, 'title')),
  }                        (&Apache::lonnet::metadata($_, 'category')?&mt(&Apache::lonnet::metadata($_, 'category')):&mt('Miscellaneous')),
                         &mt(&Apache::lonnet::metadata($_, 'help'))]} (@files);
       @files = sort {$a->[2].$a->[1] cmp $b->[2].$b->[1]} (@files);
       my ($midpoint,$seconddiv,$numfiles);
       $numfiles = 0;
       foreach my $file (@files) {
           next if ($file->[1] !~ /\S/);
           $numfiles ++;
       }
       if ($numfiles > 0) {
           $result = '<div class="LC_left_float">';
           $midpoint = int($numfiles/2);
           if ($numfiles%2) {
               $midpoint ++;
           }
       }
       my $count = 0;
       my $currentcategory='';
       foreach my $file (@files) {
    next if ($file->[1] !~ /\S/);
           if ($file->[2] ne $currentcategory) {
              $currentcategory=$file->[2];
              if ((!$seconddiv) && ($count >= $midpoint)) {
                  $result .= '</div>'."\n".'<div class="LC_left_float">'."\n";
                  $seconddiv = 1;
              }
              $result.='<h3>'.$currentcategory.'</h3>';
              $count++;
           }
    $result .=
       '<label><input type="radio" name="template" value="'.$file->[0].'" />'.
       $file->[1].'</label>';
           if ($file->[3]) {
              $result.=&Apache::loncommon::help_open_topic($file->[3]);
           }
           my $filename=$file->[0];
           $filename=~s/^\/home\/httpd\/html//;
           $result.=' <font size="-2"><a href="'.$filename.'" target="sample">'.&mt('Example').'</font></a><br />'."\n";
           $count ++;
     }      }
     if (@allnames && !$result) {      if ($numfiles > 0) {
  $result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".          $result .= '</div>'."\n".'<div class="LC_clear_float_footer"></div>'."\n";
     join('</option><option>',sort(@allnames)).'</option>';  
     }      }
     return $result;      return $result;
 }  }
   
 sub newproblem {  sub newproblem {
     my ($request) = @_;      my ($request) = @_;
     my $extension=$request->uri;  
     $extension=~s:^.*\.([\w]+)$:$1:;      if ($env{'form.template'}) {
     &Apache::lonxml::debug("Looking for :$extension:");   my $file = $env{'form.template'};
     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);   my $dest = &Apache::lonnet::filelocation("",$request->uri);
  copy($file,$dest);   &File::Copy::copy($file,$dest);
  &renderpage($request,$dest);   &renderpage($request,$dest);
     } elsif($env{'form.newfile'} && !$templatelist) {   return;
  # I don't like hard-coded filenames but for now, this will work.      }
  use File::Copy;  
       my ($extension) = ($request->uri =~ m/\.(\w+)$/);
       &Apache::lonxml::debug("Looking for :$extension:");
       my $templatelist=&get_template_list($extension);
       if ($env{'form.newfile'} && !$templatelist) {
    # no templates found
  my $templatefilename =   my $templatefilename =
     $request->dir_config('lonIncludes').'/templates/blank.'.$extension;      $request->dir_config('lonIncludes').'/templates/blank.'.$extension;
  &Apache::lonxml::debug("$templatefilename");   &Apache::lonxml::debug("$templatefilename");
  my $dest = &Apache::lonnet::filelocation("",$request->uri);   my $dest = &Apache::lonnet::filelocation("",$request->uri);
  copy($templatefilename,$dest);   &File::Copy::copy($templatefilename,$dest);
  &renderpage($request,$dest);   &renderpage($request,$dest);
     } else {      } else {
  my $url=&HTML::Entities::encode($request->uri,'<>&"');   my $url=&HTML::Entities::encode($request->uri,'<>&"');
Line 980  sub newproblem { Line 1107  sub newproblem {
  $shownurl=~s-^/~-/priv/-;   $shownurl=~s-^/~-/priv/-;
  my $dest = &Apache::lonnet::filelocation("",$request->uri);   my $dest = &Apache::lonnet::filelocation("",$request->uri);
  my $errormsg;   my $errormsg;
  if ($env{'form.newfile'}) {  
     $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";  
  }  
  my $instructions;   my $instructions;
  my $start_page =    my $start_page = 
     &Apache::loncommon::start_page("Create New $extension");      &Apache::loncommon::start_page("Create New $extension");
  if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}  
  my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',  
   'resource' => 'resource',  
   'requested' => 'The requested file',  
   'not exist' => 'currently does not exist',  
   'createnew' => 'To create a new',  
   'click' => 'click on the',  
   'Create' => 'Create',  
   'button' => 'button');  
  my $extensionTranslated = &mt($extension);  
  $request->print("   $request->print("
 $start_page  $start_page
 <h1>".&mt("Creating a new $extension resource.")."</h1>  <h1>".&mt("Creating a new $extension resource.")."</h1>
Line 1005  $errormsg Line 1119  $errormsg
 <p>  <p>
 <b>  <b>
 ".&mt("To create a new $extension, select a template from the".  ".&mt("To create a new $extension, select a template from the".
       "pull-down menu below. Then click on the \"Create $extension\" button.")."</b>        " list below. Then click on the \"Create $extension\" button.")."</b>
 </p>");  </p><form action=\"$url\" method=\"POST\">");
   
  if (defined($templatelist)) {   if (defined($templatelist)) {
     $request->print("<select name=\"template\">$templatelist</select>");      $request->print($templatelist);
  }   }
  $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");   $request->print('<br /><input type="submit" name="newfile" value="'.
    &mt("Create $extension").'" />');
  $request->print("</form></p>".&Apache::loncommon::end_page());   $request->print("</form></p>".&Apache::loncommon::end_page());
     }      }
     return '';      return;
   }
   
   sub update_construct_style {
       if ($env{'request.state'} eq "construct"
    && $env{'form.problemmode'} eq 'view' 
    &&  defined($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 {  sub handler {
     #my $t0 = [&gettimeofday()];      #my $t0 = [&gettimeofday()];
     my $request=$_[0];      my $request=$_[0];
Line 1024  sub handler { Line 1157  sub handler {
     $Apache::lonxml::debug=$env{'user.debug'};      $Apache::lonxml::debug=$env{'user.debug'};
     $env{'request.uri'}=$request->uri;      $env{'request.uri'}=$request->uri;
     &setuppermissions();      &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);      my $file=&Apache::lonnet::filelocation("",$request->uri);
   
Line 1051  sub handler { Line 1177  sub handler {
     }      }
     &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");      &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
     &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});      &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
     my ($symb) = &Apache::lonxml::whichuser();      my ($symb) = &Apache::lonnet::whichuser();
     &Apache::lonxml::debug('symb is '.$symb);      &Apache::lonxml::debug('symb is '.$symb);
     if ($env{'request.state'} eq "construct") {      if ($env{'request.state'} eq "construct") {
  if ( -e $file ) {   if ( -e $file ) {
Line 1059  sub handler { Line 1185  sub handler {
     ['problemmode']);      ['problemmode']);
     if (!(defined $env{'form.problemmode'})) {      if (!(defined $env{'form.problemmode'})) {
  #first visit to problem in construction space   #first visit to problem in construction space
  $env{'form.problemmode'}='View';   $env{'form.problemmode'}= 'view';
  &renderpage($request,$file);   &renderpage($request,$file);
     } elsif ($env{'form.problemmode'} eq &mt('EditXML') ||      } elsif ($env{'form.problemmode'} eq 'editxml') {
      $env{'form.problemmode'} eq 'EditXML') {  
  &editxmlmode($request,$file);   &editxmlmode($request,$file);
     } elsif ($env{'form.problemmode'} eq &mt('Calculate answers')) {      } elsif ($env{'form.problemmode'} eq 'calcanswers') {
  &analyze($request,$file);   &analyze($request,$file);
     } else {      } else {
    &update_construct_style();
  &renderpage($request,$file);   &renderpage($request,$file);
     }      }
  } else {   } else {
Removed from v.1.258  
changed lines
  Added in v.1.302

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
500 Internal Server Error

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.