[LON-CAPA-cvs] cvs: loncom /homework grades.pm

albertel lon-capa-cvs@mail.lon-capa.org
Wed, 12 Nov 2003 21:18:10 -0000


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albertel		Wed Nov 12 16:18:10 2003 EDT

  Modified files:              
    /loncom/homework	grades.pm 
  Log:
  - forward porting the changes from version_1_0_2_scantron
  
  
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Index: loncom/homework/grades.pm
diff -u loncom/homework/grades.pm:1.156 loncom/homework/grades.pm:1.157
--- loncom/homework/grades.pm:1.156	Mon Nov 10 11:39:41 2003
+++ loncom/homework/grades.pm	Wed Nov 12 16:18:10 2003
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.156 2003/11/10 16:39:41 albertel Exp $
+# $Id: grades.pm,v 1.157 2003/11/12 21:18:10 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -3371,16 +3371,30 @@
     return $result;
 }
 
+#FIXME, I am in loncreatecourse, use that one instead
+sub propath {
+    my ($udom,$uname)=@_;
+    $udom=~s/\W//g;
+    $uname=~s/\W//g;
+    my $subdir=$uname.'__';
+    $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
+    my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
+    return $proname;
+} 
+
 sub scantron_uploads {
     if (!-e $Apache::lonnet::perlvar{'lonScansDir'}) { return ''};
     my $result=	'<select name="scantron_selectfile">';
-    opendir(DIR,$Apache::lonnet::perlvar{'lonScansDir'});
-    my @files=sort(readdir(DIR));
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my @files=&Apache::lonnet::dirlist('userfiles',$cdom,$cname,
+				       &propath($cdom,$cname));
     foreach my $filename (@files) {
-	if ($filename eq '.' or $filename eq '..') { next; }
+	($filename)=split(/&/,$filename);
+	if ($filename!~/^scantron_orig_/) { next ; }
+	$filename=~s/^scantron_orig_//;
 	$result.="<option>$filename</option>\n";
     }
-    closedir(DIR);
     $result.="</select>";
     return $result;
 }
@@ -3408,6 +3422,8 @@
     my $file_selector=&scantron_uploads();
     my $format_selector=&scantron_scantab();
     my $result;
+    #FIXME allow instructor to be able to download the scantron file
+    # and to upload it,
     $result.= <<SCANTRONFORM;
 <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantro_process">
   <input type="hidden" name="command" value="scantron_validate" />
@@ -3436,6 +3452,13 @@
               Format of data file: $format_selector
 	    </td>
           </tr>
+          <tr bgcolor="#ffffe6">
+            <td>
+<!-- FIXME this is lazy, a single parse of the set should let me know what this is -->
+              Last line to expect an answer on: 
+                <input type="text" name="scantron_maxbubble" />
+	    </td>
+          </tr>
         </table>
       </td>
     </tr>
@@ -3452,6 +3475,7 @@
     my ($which) = @_;
     my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
     my %config;
+    #FIXME probably should move to XML it has already gotten a bit much now
     foreach my $line (<$fh>) {
 	my ($name,$descrip)=split(/:/,$line);
 	if ($name ne $which ) { next; }
@@ -3468,6 +3492,12 @@
 	$config{'Qlength'}=$config[8];
 	$config{'Qoff'}=$config[9];
 	$config{'Qon'}=$config[10];
+	$config{'PaperID'}=$config[11];
+	$config{'PaperIDlength'}=$config[12];
+	$config{'FirstName'}=$config[13];
+	$config{'FirstNamelength'}=$config[14];
+	$config{'LastName'}=$config[15];
+	$config{'LastNamelength'}=$config[16];
 	last;
     }
     return %config;
@@ -3483,8 +3513,53 @@
     return %idmap;
 }
 
+sub scantron_fixup_scanline {
+    my ($scantron_config,$scan_data,$line,$whichline,$field,$args)=@_;
+    if ($field eq 'ID') {
+	if (length($args->{'newid'}) > $$scantron_config{'IDlength'}) {
+	    return ($line,1,'New value to large');
+	}
+	if (length($args->{'newid'}) < $$scantron_config{'IDlength'}) {
+	    $args->{'newid'}=sprintf('%-'.$$scantron_config{'IDlength'}.'s',
+				     $args->{'newid'});
+	}
+	substr($line,$$scantron_config{'IDstart'}-1,
+	       $$scantron_config{'IDlength'})=$args->{'newid'};
+	if ($args->{'newid'}=~/^\s*$/) {
+	    &scan_data($scan_data,"$whichline.user",
+		       $args->{'username'}.':'.$args->{'domain'});
+	}
+    } elsif ($field eq 'answer') {
+	my $length=$scantron_config->{'Qlength'};
+	my $off=$scantron_config->{'Qoff'};
+	my $on=$scantron_config->{'Qon'};
+	my $answer=${off}x$length;
+	if ($args->{'response'} eq 'none') {
+	    &scan_data($scan_data,
+		       "$whichline.no_bubble.".$args->{'question'},'1');
+	} else {
+	    substr($answer,$args->{'response'},1)=$on;
+	    &scan_data($scan_data,
+		       "$whichline.no_bubble.".$args->{'question'},undef,'1');
+	}
+	my $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
+	substr($line,$where-1,$length)=$answer;
+    }
+    return $line;
+}
+
+sub scan_data {
+    my ($scan_data,$key,$value,$delete)=@_;
+    my $filename=$ENV{'form.scantron_selectfile'};
+    if (defined($value)) {
+	$scan_data->{$filename.'_'.$key} = $value;
+    }
+    if ($delete) { delete($scan_data->{$filename.'_'.$key}); }
+    return $scan_data->{$filename.'_'.$key};
+}
+
 sub scantron_parse_scanline {
-    my ($line,$scantron_config)=@_;
+    my ($line,$whichline,$scantron_config,$scan_data)=@_;
     my %record;
     my $questions=substr($line,$$scantron_config{'Qstart'}-1);
     my $data=substr($line,0,$$scantron_config{'Qstart'}-1);
@@ -3498,6 +3573,15 @@
     }
     $record{'scantron.ID'}=substr($data,$$scantron_config{'IDstart'}-1,
 				  $$scantron_config{'IDlength'});
+    $record{'scantron.PaperID'}=
+	substr($data,$$scantron_config{'PaperID'}-1,
+	       $$scantron_config{'PaperIDlength'});
+    $record{'scantron.FirstName'}=
+	substr($data,$$scantron_config{'FirstName'}-1,
+	       $$scantron_config{'FirstNamelength'});
+    $record{'scantron.LastName'}=
+	substr($data,$$scantron_config{'LastName'}-1,
+	       $$scantron_config{'LastNamelength'});
     my @alphabet=('A'..'Z');
     my $questnum=0;
     while ($questions) {
@@ -3505,17 +3589,25 @@
 	my $currentquest=substr($questions,0,$$scantron_config{'Qlength'});
 	substr($questions,0,$$scantron_config{'Qlength'})='';
 	if (length($currentquest) < $$scantron_config{'Qlength'}) { next; }
-	my (@array)=split(/$$scantron_config{'Qon'}/,$currentquest);
-	if (scalar(@array) gt 2) {
-	    #FIXME do something intelligent with double bubbles
-	    Apache->request->print("<br ><b>Wha!!!</b> <pre>".scalar(@array).
-				   '-'.$currentquest.'-'.$questnum.'</pre><br />');
-	}
+	my @array=split($$scantron_config{'Qon'},$currentquest,-1);
 	if (length($array[0]) eq $$scantron_config{'Qlength'}) {
 	    $record{"scantron.$questnum.answer"}='';
+	    if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
+		push(@{$record{"scantron.missingerror"}},$questnum);
+ 	    }
 	} else {
 	    $record{"scantron.$questnum.answer"}=$alphabet[length($array[0])];
 	}
+ 	if (scalar(@array) gt 2) {
+ 	    push(@{$record{'scantron.doubleerror'}},$questnum);
+ 	    my @ans=@array;
+ 	    my $i=length($ans[0]);shift(@ans);
+	    while ($#ans) {
+ 		$i+=length($ans[0])+1;
+ 		$record{"scantron.$questnum.answer"}.=$alphabet[$i];
+ 		shift(@ans);
+ 	    }
+ 	}
     }
     $record{'scantron.maxquest'}=$questnum;
     return \%record;
@@ -3523,7 +3615,6 @@
 
 sub scantron_add_delay {
     my ($delayqueue,$scanline,$errormessage,$errorcode)=@_;
-    Apache->request->print('add_delay_error '.$_[2] );
     push(@$delayqueue,
 	 {'line' => $scanline, 'emsg' => $errormessage,
 	  'ecode' => $errorcode }
@@ -3531,14 +3622,15 @@
 }
 
 sub scantron_find_student {
-    my ($scantron_record,$idmap)=@_;
+    my ($scantron_record,$scan_data,$idmap,$line)=@_;
     my $scanID=$$scantron_record{'scantron.ID'};
+    if ($scanID =~ /^\s*$/) {
+ 	return &scan_data($scan_data,"$line.user");
+    }
     foreach my $id (keys(%$idmap)) {
-	#Apache->request->print('<pre>checking studnet -'.$id.'- againt -'.$scanID.'- </pre>');
-	if (lc($id) eq lc($scanID)) {
-	    #Apache->request->print('success');
-	    return $$idmap{$id};
-	}
+ 	if (lc($id) eq lc($scanID)) {
+ 	    return $$idmap{$id};
+ 	}
     }
     return undef;
 }
@@ -3563,6 +3655,400 @@
     my ($r) = @_;
 }
 
+sub scantron_process_corrections {
+    my ($r) = @_;
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my $which=$ENV{'form.scantron_line'};
+    my $line=&scantron_get_line($scanlines,$which);
+    my ($skip,$err,$errmsg);
+    if ($ENV{'form.scantron_skip_record'}) {
+	$skip=1;
+    } elsif ($ENV{'form.scantron_corrections'} =~ /^(duplicate|incorrect)ID$/) {
+	my $newstudent=$ENV{'form.scantron_username'}.':'.
+	    $ENV{'form.scantron_domain'};
+	my $newid=$classlist->{$newstudent}->[&Apache::loncoursedata::CL_ID];
+	($line,$err,$errmsg)=
+	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
+				     'ID',{'newid'=>$newid,
+				    'username'=>$ENV{'form.scantron_username'},
+				    'domain'=>$ENV{'form.scantron_domain'}});
+    } elsif ($ENV{'form.scantron_corrections'} =~ /^(missing|double)bubble$/) {
+	foreach my $question (split(',',$ENV{'form.scantron_questions'})) {
+	    ($line,$err,$errmsg)=
+		&scantron_fixup_scanline(\%scantron_config,$scan_data,$line,
+					 $which,'answer',
+					 { 'question'=>$question,
+		       'response'=>$ENV{"form.scantron_correct_Q_$question"}});
+	    if ($err) { last; }
+	}
+    }
+    if ($err) {
+	$r->print("Unable to accept last correction, an error occurred :$errmsg:");
+    } else {
+	&scantron_put_line($scanlines,$which,$line,$skip);
+	&scantron_putfile($scanlines,$scan_data);
+    }
+}
+
+
+sub scantron_validate_file {
+    my ($r) = @_;
+    my ($symb,$url)=&get_symb_and_url($r);
+    if (!$symb) {return '';}
+    my $default_form_data=&defaultFormData($symb,$url);
+
+    if ($ENV{'form.scantron_corrections'}) {
+	&scantron_process_corrections($r);
+    }
+    #get the student pick code ready
+    $r->print(&Apache::loncommon::studentbrowser_javascript());
+    my $result= <<SCANTRONFORM;
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
+  <input type="hidden" name="selectpage" value="$ENV{'form.selectpage'}" />
+  <input type="hidden" name="scantron_format" value="$ENV{'form.scantron_format'}" />
+  <input type="hidden" name="scantron_selectfile" value="$ENV{'form.scantron_selectfile'}" />
+  <input type="hidden" name="scantron_maxbubble" value="$ENV{'form.scantron_maxbubble'}" />
+  $default_form_data
+SCANTRONFORM
+    $r->print($result);
+    
+    my @validate_phases=( 'ID',
+			  'CODE',
+			  'doublebubble',
+			  'missingbubbles');
+    if (!$ENV{'form.validatepass'}) {
+	$ENV{'form.valiadatepass'} = 0;
+    }
+    my $currentphase=$ENV{'form.valiadatepass'};
+
+    if ($ENV{'form.scantron_selectfile'}=~m-^/-) {
+	#first pass copy file to classdir
+	
+    }
+    my $stop=0;
+    while (!$stop && $currentphase < scalar(@validate_phases)) {
+	$r->print("<p> Validating ".$validate_phases[$currentphase]."</p>");
+	$r->rflush();
+	my $which="scantron_validate_".$validate_phases[$currentphase];
+	{
+	    no strict 'refs';
+	    ($stop,$currentphase)=&$which($r,$currentphase);
+	}
+    }
+    if (!$stop) {
+	$r->print("Validation process complete.<br />");
+	$r->print('<input type="submit" name="submit" value="Start Grading" />');
+	$r->print('<input type="hidden" name="command" value="scantron_process" />');
+    } else {
+	$r->print('<input type="hidden" name="command" value="scantron_validate" />');
+	$r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
+    }
+    if ($stop) {
+	$r->print('<input type="submit" name="submit" value="Continue ->" />');
+	$r->print(' using corrected info <br />');
+	$r->print("<input type='submit' value='Skip' name='scantron_skip_record' />");
+	$r->print(" this scanline saving it for later.");
+    }
+    $r->print(" </form><br />".&show_grading_menu_form($symb,$url).
+	      "</body></html>");
+    return '';
+}
+
+sub scantron_getfile {
+    #FIXME really would prefer a scantron directory but tokenwrapper
+    # doesn't allow access to subdirs of userfiles
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $lines;
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_orig_'.$ENV{'form.scantron_selectfile'});
+    if ($lines eq '-1') {
+	#FIXME need to actually replicate file to course space
+	#FIXME when replicating strip CRLF to LF or CR to LF
+    }
+    my %scanlines;
+    $scanlines{'orig'}=[(split("\n",$lines,-1))];
+    my $temp=$scanlines{'orig'};
+    $scanlines{'count'}=$#$temp;
+
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_corrected_'.$ENV{'form.scantron_selectfile'});
+    if ($lines eq '-1') {
+	$scanlines{'corrected'}=[];
+    } else {
+	$scanlines{'corrected'}=[(split("\n",$lines,-1))];
+    }
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_skipped_'.$ENV{'form.scantron_selectfile'});
+    if ($lines eq '-1') {
+	$scanlines{'skipped'}=[];
+    } else {
+	$scanlines{'skipped'}=[(split("\n",$lines,-1))];
+    }
+    my @tmp=&Apache::lonnet::dump('scantrondata',$cdom,$cname);
+    if ($tmp[0] =~ /^(error:|no_such_host)/) { @tmp=(); }
+    my %scan_data = @tmp;
+    return (\%scanlines,\%scan_data);
+}
+
+sub lonnet_putfile {
+    my ($contents,$filename)=@_;
+    my $docuname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $docudom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $docuhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
+    $ENV{'form.sillywaytopassafilearound'}=$contents;
+    &Apache::lonnet::finishuserfileupload($docuname,$docudom,$docuhome,'sillywaytopassafilearound',$filename);
+
+}
+
+sub scantron_putfile {
+    my ($scanlines,$scan_data) = @_;
+    #FIXME really would prefer a scantron directory but tokenwrapper
+    # doesn't allow access to subdirs of userfiles
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $prefix='scantron_';
+# no need to update orig, shouldn't change
+#   &lonnet_putfile(join("\n",@{$scanlines->{'orig'}}),$prefix.'orig_'.
+#		    $ENV{'form.scantron_selectfile'});
+    &lonnet_putfile(join("\n",@{$scanlines->{'corrected'}}),
+		    $prefix.'corrected_'.
+		    $ENV{'form.scantron_selectfile'});
+    &lonnet_putfile(join("\n",@{$scanlines->{'skipped'}}),
+		    $prefix.'skipped_'.
+		    $ENV{'form.scantron_selectfile'});
+    &Apache::lonnet::put('scantrondata',$scan_data,$cdom,$cname);
+}
+
+sub scantron_get_line {
+    my ($scanlines,$i)=@_;
+    if ($scanlines->{'skipped'}[$i]) {return undef;}
+    if ($scanlines->{'corrected'}[$i]) {return $scanlines->{'corrected'}[$i];}
+    return $scanlines->{'orig'}[$i]; 
+}
+
+sub scantron_put_line {
+    my ($scanlines,$i,$newline,$skip)=@_;
+    if ($skip) {
+	$scanlines->{'skipped'}[$i]=$newline;
+	return;
+    }
+    $scanlines->{'corrected'}[$i]=$newline;
+}
+
+sub scantron_validate_ID {
+    my ($r,$currentphase) = @_;
+    
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+
+    my %found=('ids'=>{},'usernames'=>{});
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	my $id=$$scan_record{'scantron.ID'};
+	my $found;
+	foreach my $checkid (keys(%idmap)) {
+	    if (lc($checkid) eq lc($id)) { $found=$checkid;last; }
+	}
+	if ($found) {
+	    my $username=$idmap{$found};
+	    if ($found{'ids'}{$found}) {
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'duplicateID',$found);
+		return(1);
+	    } elsif ($found{'usernames'}{$username}) {
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'duplicateID',$username);
+		return(1);
+	    }
+	    #FIXME store away line we prviously saw the ID on to use above
+	    $found{'ids'}{$found}++;
+	    $found{'usernames'}{$username}++;
+	} else {
+	    if ($id =~ /^\s*$/) {
+		my $username=&scan_data($scan_dat
+a,"$i.user");
+		if (defined($username) && $found{'usernames'}{$username}) {
+		    &scantron_get_correction($r,$i,$scan_record,
+					     \%scantron_config,
+					     $line,'duplicateID',$username);
+		    return(1);
+		} elsif (!defined($username)) {
+		    &scantron_get_correction($r,$i,$scan_record,
+					     \%scantron_config,
+					     $line,'incorrectID');
+		    return(1);
+		}
+		$found{'usernames'}{$username}++;
+	    } else {
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'incorrectID');
+		return(1);
+	    }
+	}
+    }
+
+    return (0,$currentphase+1);
+}
+
+sub scantron_get_correction {
+    my ($r,$i,$scan_record,$scan_config,$line,$error,$arg)=@_;
+
+#FIXME in the case of a duplicated ID the previous line, probaly need
+#to show both the current line and the previous one and allow skipping
+#the previous one or the current one
+
+    $r->print("<p>An error was detected ($error) ");
+    if ( defined($$scan_record{'scantron.PaperID'}) ) {
+	$r->print(" for PaperID <tt>".
+		  $$scan_record{'scantron.PaperID'}."</tt> \n");
+    } else {
+	$r->print(" in scanline $i <pre>".
+		  $line."</pre> \n");
+    }
+    $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
+    $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
+    if ($error =~ /ID$/) {
+	if ($error eq 'unknownID') {
+	    $r->print("The encoded ID is not in the classlist</p>\n");
+	} elsif ($error eq 'duplicateID') {
+	    $r->print("The encoded ID has also been used by a previous paper $arg</p>\n");
+	}
+	$r->print("<p>The ID on the form is  <tt>".
+		  $$scan_record{'scantron.ID'}."</tt><br />\n");
+	$r->print("The name on the paper is ".
+		  $$scan_record{'scantron.LastName'}.",".
+		  $$scan_record{'scantron.FirstName'}."</p>");
+	$r->print("<p>How should I handle this? <br /> \n");
+	$r->print("\n<ul><li> ");
+	#FIXME it would be nice if this sent back the user ID and
+	#could do partial userID matches
+	$r->print(&Apache::loncommon::selectstudent_link('scantronupload',
+				       'scantron_username','scantron_domain'));
+	$r->print(": <input type='text' name='scantron_username' value='' />");
+	$r->print("\n@".
+		 &Apache::loncommon::select_dom_form(undef,'scantron_domain'));
+
+	$r->print('</li>');
+    } elsif ($error eq 'doublebubble') {
+#FIXME Need to print out who this is along with the paper info
+	$r->print("<p>There have been multiple bubbles scanned for a some question(s)</p>\n");
+	$r->print('<input type="hidden" name="scantron_questions" value="'.
+		  join(',',@{$arg}).'" />');
+	$r->print("<p>Please indicate which bubble should be used for grading</p>");
+	foreach my $question (@{$arg}) {
+	    my $selected=$$scan_record{"scantron.$question.answer"};
+	    &scantron_bubble_selector($r,$scan_config,$question,split('',$selected));
+	}
+    } elsif ($error eq 'missingbubble') {
+	$r->print("<p>There have been <b>no</b> bubbles scanned for some question(s)</p>\n");
+	$r->print("<p>Please indicate which bubble should be used for grading</p>");
+	$r->print("Some questions have no scanned bubbles\n");
+	$r->print('<input type="hidden" name="scantron_questions" value="'.
+		  join(',',@{$arg}).'" />');
+	foreach my $question (@{$arg}) {
+	    my $selected=$$scan_record{"scantron.$question.answer"};
+	    &scantron_bubble_selector($r,$scan_config,$question);
+	}
+    } else {
+	$r->print("\n<ul>");
+    }
+    $r->print("\n</li></ul>");
+
+}
+
+sub scantron_bubble_selector {
+    my ($r,$scan_config,$quest,@selected)=@_;
+    my $max=$$scan_config{'Qlength'};
+    my @alphabet=('A'..'Z');
+    $r->print("<table border='1'><tr><td rowspan='2'>$quest</td>");
+    for (my $i=0;$i<$max+1;$i++) {
+	$r->print('<td align="center">');
+	if ($selected[0] eq $alphabet[$i]) { $r->print('X'); shift(@selected) }
+	else { $r->print('&nbsp;'); }
+	$r->print('</td>');
+    }
+    $r->print('<td></td></tr><tr>');
+    for (my $i=0;$i<$max;$i++) {
+	$r->print('<td><input type="radio" name="scantron_correct_Q_'.$quest.
+		  '" value="'.$i.'" />'.$alphabet[$i]."</td>");
+    }
+    $r->print('<td><input type="radio" name="scantron_correct_Q_'.$quest.
+	      '" value="none" /> No bubble </td>');
+    $r->print('</tr></table>');
+}
+
+sub scantron_validate_CODE {
+    my ($r,$currentphase) = @_;
+    #FIXME doesn't do anything yet
+    return (0,$currentphase+1);
+}
+
+sub scantron_validate_doublebubble {
+    my ($r,$currentphase) = @_;
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	if (!defined($$scan_record{'scantron.doubleerror'})) { next; }
+	&scantron_get_correction($r,$i,$scan_record,\%scantron_config,$line,
+				 'doublebubble',
+				 $$scan_record{'scantron.doubleerror'});
+    	return (1,$currentphase);
+    }
+    return (0,$currentphase+1);
+}
+
+sub scantron_validate_missingbubbles {
+    my ($r,$currentphase) = @_;
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    my $max_bubble=$ENV{'form.scantron_maxbubble'};
+    if (!$max_bubble) { $max_bubble=2**31; }
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	if (!defined($$scan_record{'scantron.missingerror'})) { next; }
+	my @to_correct;
+	foreach my $missing (@{$$scan_record{'scantron.missingerror'}}) {
+	    if ($missing > $max_bubble) { next; }
+	    push(@to_correct,$missing);
+	}
+	if (@to_correct) {
+	    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+				     $line,'missingbubble',\@to_correct);
+	    return (1,$currentphase);
+	}
+
+    }
+    return (0,$currentphase+1);
+}
+
 sub scantron_process_students {
     my ($r) = @_;
     my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($ENV{'form.selectpage'});
@@ -3571,8 +4057,7 @@
     my $default_form_data=&defaultFormData($symb,$url);
 
     my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
-    my $scanlines=Apache::File->new($Apache::lonnet::perlvar{'lonScansDir'}."/$ENV{'form.scantron_selectfile'}");
-    my @scanlines=<$scanlines>;
+    my ($scanlines,$scan_data)=&scantron_getfile();
     my $classlist=&Apache::loncoursedata::get_classlist();
     my %idmap=&username_to_idmap($classlist);
     my $navmap=Apache::lonnavmaps::navmap->new();
@@ -3589,35 +4074,39 @@
     my @delayqueue;
     my %completedstudents;
     
-    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,
-	           'Scantron Status','Scantron Progress',scalar(@scanlines));
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron Status',
+ 				    'Scantron Progress',$scanlines->{'count'});
     &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
 					  'Processing first student');
     my $start=&Time::HiRes::time();
-    foreach my $line (@scanlines) {
-	$r->print('<pre>line is'.$line.'</pre>');
-
-	chomp($line);
-	my $scan_record=&scantron_parse_scanline($line,\%scantron_config);
-	my ($uname,$udom);
-	unless ($uname=&scantron_find_student($scan_record,\%idmap)) {
-	    &scantron_add_delay(\@delayqueue,$line,
-				'Unable to find a student that matches',1);
-	    next;
-	}
-	if (exists $completedstudents{$uname}) {
-	    &scantron_add_delay(\@delayqueue,$line,
-				'Student '.$uname.' has multiple sheets',2);
-	    next;
-	}
-	$r->print('<pre>doing studnet'.$uname.'</pre>');
-	($uname,$udom)=split(/:/,$uname);
-	&Apache::lonnet::delenv('form.counter');
-	&Apache::lonnet::appenv(%$scan_record);
+    
+    while ($i<$scanlines->{'count'}) {
+ 	($uname,$udom)=('','');
+ 	$i++;
+ 	my $line=&scantron_get_line($scanlines,$i);
+#	$r->print('<pre>line is'.$line.'</pre>');
+ 	if ($line=~/^[\s\cz]*$/) { next; }
+ 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+ 						 $scan_data);
+ 	unless ($uname=&scantron_find_student($scan_record,$scan_data,
+ 					      \%idmap,$i)) {
+  	    &scantron_add_delay(\@delayqueue,$line,
+ 				'Unable to find a student that matches',1);
+ 	    next;
+  	}
+ 	if (exists $completedstudents{$uname}) {
+ 	    &scantron_add_delay(\@delayqueue,$line,
+ 				'Student '.$uname.' has multiple sheets',2);
+ 	    next;
+ 	}
+#	$r->print('<pre>doing studnet'.$uname.'</pre>');
+  	($uname,$udom)=split(/:/,$uname);
+  	&Apache::lonnet::delenv('form.counter');
+  	&Apache::lonnet::appenv(%$scan_record);
 #    &Apache::lonhomework::showhash(%ENV);
 #    $Apache::lonxml::debug=1;
 #	&Apache::lonxml::debug("line is $line");
-	
+  	
 	    my $i=0;
 	foreach my $resource (@resources) {
 	    $i++;
@@ -3679,7 +4168,70 @@
     #     to ignore delayed students, possibly saving the delay queue for later
     
     $navmap->untieHashes();
+    $r->print("<p>Done</p>");
+    $r->print(&show_grading_menu_form($symb,$url));
+    return '';
 }
+
+sub scantron_upload_scantron_data {
+    my ($r)=@_;
+    $r->print(&Apache::loncommon::coursebrowser_javascript($ENV{'request.role.domain'}));
+    my $select_link=&Apache::loncommon::selectcourse_link('rules','courseid',
+							  'domainid');
+    my $domsel=&Apache::loncommon::select_dom_form($ENV{'request.role.domain'},
+						   'domainid');
+    $r->print(<<UPLOAD);
+<script type="text/javascript" language="javascript">
+    function checkUpload(formname) {
+	if (formname.upfile.value == "") {
+	    alert("Please use the browse button to select a file from your local directory.");
+	    return false;
+	}
+	formname.submit();
+    }
+</script>
+
+<form enctype='multipart/form-data' action='/adm/grades' name='rules' method='post'>
+Course: <input name='courseid' type='text' />
+Domain: $domsel $select_link
+<br />
+<input name='command' value='scantronupload_save' type='hidden' />
+File to upload:<input type="file" name="upfile" size="50" />
+<br />
+<input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scantron Data" />
+</form>
+UPLOAD
+    return '';
+}
+
+sub scantron_upload_scantron_data_save {
+    my($r)=@_;
+    $r->print("Doing upload to ".$ENV{'form.courseid'});
+    my $home=&Apache::lonnet::homeserver($ENV{'form.courseid'},
+					 $ENV{'form.domainid'});
+    my $fname=$ENV{'form.upfile.filename'};
+    #FIXME
+    #copied from lonnet::userfileupload()
+    #make that function able to target a specified course
+    # Replace Windows backslashes by forward slashes
+    $fname=~s/\\/\//g;
+    # Get rid of everything but the actual filename
+    $fname=~s/^.*\/([^\/]+)$/$1/;
+    # Replace spaces by underscores
+    $fname=~s/\s+/\_/g;
+    # Replace all other weird characters by nothing
+    $fname=~s/[^\w\.\-]//g;
+    # See if there is anything left
+    unless ($fname) { return 'error: no uploaded file'; }
+    $fname='scantron_orig_'.$fname;
+    &Apache::lonnet::logthis("fname is $fname");
+    $r->print(&Apache::lonnet::finishuserfileupload($ENV{'form.courseid'},
+						    $ENV{'form.domainid'},
+						    $home,'upfile',$fname));
+    return '';
+}
+
+
 #-------- end of section for handling grading scantron forms -------
 #
 #-------------------------------------------------------------------
@@ -3871,7 +4423,7 @@
 	$url = $ENV{'form.url'};
     }
     &send_header($request);
-    if ($url eq '' && $symb eq '') {
+    if ($url eq '' && $symb eq '' && $command eq '') {
 	if ($ENV{'user.adv'}) {
 	    if (($ENV{'form.codeone'}) && ($ENV{'form.codetwo'}) &&
 		($ENV{'form.codethree'})) {
@@ -3912,7 +4464,6 @@
 		delete($perm{'mgr'});
 	    }
 	}
-
 	if ($command eq 'submission' && $perm{'vgr'}) {
 	    ($ENV{'form.student'} eq '' ? &listStudents($request) : &submission($request,0,0));
 	} elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {
@@ -3952,12 +4503,21 @@
 	    }
 	} elsif ($command eq 'scantron_selectphase' && $perm{'mgr'}) {
 	    $request->print(&scantron_selectphase($request));
+ 	} elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
+ 	    $request->print(&scantron_validate_file($request));
 	} elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
 	    $request->print(&scantron_validate_file($request));
 	} elsif ($command eq 'scantron_process' && $perm{'mgr'}) {
 	    $request->print(&scantron_process_students($request));
+ 	} elsif ($command eq 'scantronupload' && 
+ 		 &Apache::lonnet::allowed('usc',$ENV{'request.role.domain'})) {
+ 	    $request->print(&scantron_upload_scantron_data($request));
+ 
+ 	} elsif ($command eq 'scantronupload_save' &&
+ 		 &Apache::lonnet::allowed('usc',$ENV{'request.role.domain'})) {
+ 	    $request->print(&scantron_upload_scantron_data_save($request));
 	} elsif ($command) {
-	    $request->print("Access Denied");
+	    $request->print("Access Denied ($command)");
 	}
     }
     &send_footer($request);
@@ -3973,6 +4533,7 @@
 #remotewindow.close();
 #</script>"); 
     $request->print(&Apache::loncommon::bodytag('Grading'));
+    $request->rflush();
 }
 
 sub send_footer {

--albertel1068671890--