--- loncom/homework/grades.pm	2005/06/04 19:05:31	1.273
+++ loncom/homework/grades.pm	2005/09/20 06:45:02	1.285
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.273 2005/06/04 19:05:31 albertel Exp $
+# $Id: grades.pm,v 1.285 2005/09/20 06:45:02 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -471,6 +471,10 @@ sub most_similar {
 
     $uessay=~s/\W+/ /gs;
 
+# ignore empty submissions (occuring when only files are sent)
+
+    unless ($uessay=~/\w+/) { return ''; }
+
 # these will be returned. Do not care if not at least 50 percent similar
     my $limit=0.6;
     my $sname='';
@@ -743,7 +747,7 @@ LISTJAVASCRIPT
 	    if ($env{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
 		foreach (sort keys(%status)) {
 		    next if (/^resource.*?submitted_by$/);
-		    $gradeTable.='<td align="middle">&nbsp;'.$status{$_}.'&nbsp;</td>'."\n";
+		    $gradeTable.='<td align="center">&nbsp;'.$status{$_}.'&nbsp;</td>'."\n";
 		}
 	    }
 #	    $gradeTable.='<td></td>' if ($ctr%2 ==1);
@@ -2293,12 +2297,13 @@ sub version_portfiles {
     my $portfolio_root = &Apache::loncommon::propath($domain,
 						 $stuname).
 						'/userfiles/portfolio';
-    foreach my $key(keys %$record) {
+    foreach my $key (keys(%$record)) {
         my $new_portfiles;
+	
         if ($key =~ /^resource\.($version_parts)\./ && $key =~ /\.portfiles$/ ) {
             my @v_portfiles;
             my @portfiles = split(/,/,$$record{$key});
-            # &Apache::lonnet::logthis("should be unmarking and remarking");
+            &Apache::lonnet::logthis("should be unmarking and remarking $key",@portfiles);
             foreach my $file (@portfiles) {
                 &Apache::lonnet::unmark_as_readonly($domain,$stuname,[$symb,$env{'request.course.id'}],$file);
                 my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*$)/);
@@ -2321,12 +2326,11 @@ sub version_portfiles {
                     }
                 }
                 $version++;
-                my $home_server = &Apache::lonnet::homeserver($stuname,$domain,undef);
                 $env{'form.copy'} = &Apache::lonnet::getfile("/uploaded/$domain/$stuname/portfolio$directory$answer_file");
                 if($env{'form.copy'} eq '-1') {
                     &Apache::lonnet::logthis('problem getting file '.$directory.$answer_file);
                 } else {
-                   my $copy_result = &Apache::lonnet::finishuserfileupload($stuname,$domain,$home_server,'copy',
+                   my $copy_result = &Apache::lonnet::finishuserfileupload($stuname,$domain,'copy',
                                     '/portfolio'.$directory.$answer_file_parts[0].'.'.$version.'.'.$answer_file_parts[-1]);
                     push(@v_portfiles, $answer_file_parts[0].'.'.$version.'.'.$answer_file_parts[-1]);
                     &Apache::lonnet::mark_as_readonly($domain,$stuname,
@@ -2656,7 +2660,6 @@ sub viewgrades {
 sub viewstudentgrade {
     my ($url,$symb,$courseid,$student,$fullname,$parts,$weight,$ctr,$last_resets) = @_;
     my ($uname,$udom) = split(/:/,$student);
-    $student=~s/:/_/;
     my %record=&Apache::lonnet::restore($symb,$courseid,$udom,$uname);
     my %aggregates = (); 
     my $result='<tr bgcolor="#ffffdd"><td align="right">'.
@@ -2665,10 +2668,11 @@ sub viewstudentgrade {
 	'<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
 	'\')"; TARGET=_self>'.$fullname.'</a> '.
 	'<font color="#999999">('.$uname.($env{'user.domain'} eq $udom ? '' : ':'.$udom).')</font></td>'."\n";
+    $student=~s/:/_/; # colon doen't work in javascript for names
     foreach my $apart (@$parts) {
 	my ($part,$type) = &split_part_type($apart);
 	my $score=$record{"resource.$part.$type"};
-        $result.='<td align="middle">';
+        $result.='<td align="center">';
         my ($aggtries,$totaltries);
         unless (exists($aggregates{$part})) {
 	    $totaltries = $record{'resource.'.$part.'.tries'};
@@ -2786,12 +2790,10 @@ sub editgrades {
     for ($i=0; $i<$env{'form.total'}; $i++) {
 	my $line;
 	my $user = $env{'form.ctr'.$i};
-	my $usercolon = $user;
-	$usercolon =~s/_/:/;
-	my ($uname,$udom)=split(/_/,$user);
+	my ($uname,$udom)=split(/:/,$user);
 	my %newrecord;
 	my $updateflag = 0;
-	$line .= '<td>'.&nameUserString(undef,$$fullname{$usercolon},$uname,$udom).'</td>';
+	$line .= '<td>'.&nameUserString(undef,$$fullname{$user},$uname,$udom).'</td>';
 	my $usec=$classlist->{"$uname:$udom"}[5];
 	if (!&canmodify($usec)) {
 	    my $numcols=scalar(@partid)*4+2;
@@ -2800,6 +2802,7 @@ sub editgrades {
 	}
         my %aggregate = ();
         my $aggregateflag = 0;
+	$user=~s/:/_/; # colon doen't work in javascript for names
 	foreach (@partid) {
 	    my $old_aw    = $env{'form.GD_'.$user.'_'.$_.'_awarded_s'};
 	    my $old_part_pcr = $old_aw/($weight{$_} ne '0' ? $weight{$_}:1);
@@ -3062,10 +3065,7 @@ sub csvuploadmap_footer {
 ENDPICK
 }
 
-sub upcsvScores_form {
-    my ($request) = shift;
-    my ($symb,$url)=&get_symb_and_url($request);
-    if (!$symb) {return '';}
+sub checkforfile_js {
     my $result =<<CSVFORMJS;
 <script type="text/javascript" language="javascript">
     function checkUpload(formname) {
@@ -3077,6 +3077,14 @@ sub upcsvScores_form {
     }
     </script>
 CSVFORMJS
+    return $result;
+}
+
+sub upcsvScores_form {
+    my ($request) = shift;
+    my ($symb,$url)=&get_symb_and_url($request);
+    if (!$symb) {return '';}
+    my $result=&checkforfile_js();
     $env{'form.probTitle'} = &Apache::lonnet::gettitle($symb);
     my ($table) = &showResourceInfo($url,$env{'form.probTitle'});
     $result.=$table;
@@ -3096,7 +3104,7 @@ CSVFORMJS
 <input type="hidden" name="saveState"  value="$env{'form.saveState'}" />
 $upfile_select
 <br /><input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scores" />
-<label><input type="checkbox" name="noFirstLine" />$ignore</lable>
+<label><input type="checkbox" name="noFirstLine" />$ignore</label>
 </form>
 ENDUPFORM
     $result.='</td></tr></table>'."\n";
@@ -3865,6 +3873,7 @@ sub scantron_CODElist {
     my $namechoice='<option></option>';
     foreach my $name (sort {uc($a) cmp uc($b)} @names) {
 	if ($name =~ /^error: 2 /) { next; }
+	if ($name =~ /^type\0/) { next; }
 	$namechoice.='<option value="'.$name.'">'.$name.'</option>';
     }
     $namechoice='<select name="scantron_CODElist">'.$namechoice.'</select>';
@@ -4108,7 +4117,14 @@ sub scantron_fixup_scanline {
 	    &scan_data($scan_data,
 		       "$whichline.no_bubble.".$args->{'question'},'1');
 	} else {
-	    substr($answer,$args->{'response'},1)=$on;
+	    if ($on eq 'letter') {
+		my @alphabet=('A'..'Z');
+		$answer=$alphabet[$args->{'response'}];
+	    } elsif ($on eq 'number') {
+		$answer=$args->{'response'}+1;
+	    } else {
+		substr($answer,$args->{'response'},1)=$on;
+	    }
 	    &scan_data($scan_data,
 		       "$whichline.no_bubble.".$args->{'question'},undef,'1');
 	}
@@ -4133,8 +4149,11 @@ sub scantron_parse_scanline {
     my %record;
     my $questions=substr($line,$$scantron_config{'Qstart'}-1);
     my $data=substr($line,0,$$scantron_config{'Qstart'}-1);
-    if ($$scantron_config{'CODElocation'} ne 0) {
-	if ($$scantron_config{'CODElocation'} < 0) {
+    if (!($$scantron_config{'CODElocation'} eq 0 ||
+	  $$scantron_config{'CODElocation'} eq 'none')) {
+	if ($$scantron_config{'CODElocation'} < 0 ||
+	    $$scantron_config{'CODElocation'} eq 'letter' ||
+	    $$scantron_config{'CODElocation'} eq 'number') {
 	    $record{'scantron.CODE'}=substr($data,
 					    $$scantron_config{'CODEstart'}-1,
 					    $$scantron_config{'CODElength'});
@@ -4169,8 +4188,12 @@ sub scantron_parse_scanline {
 	substr($questions,0,$$scantron_config{'Qlength'})='';
 	if (length($currentquest) < $$scantron_config{'Qlength'}) { next; }
 	if ($$scantron_config{'Qon'} eq 'letter') {
-	    if (!$currentquest || $currentquest eq $$scantron_config{'Qoff'} ||
-		$currentquest !~ /^[A-Z]$/) {
+	    if ($currentquest eq '?') {
+		push(@{$record{'scantron.doubleerror'}},$questnum);
+		$record{"scantron.$questnum.answer"}='';
+	    } elsif (!$currentquest 
+		     || $currentquest eq $$scantron_config{'Qoff'}
+		     || $currentquest !~ /^[A-Z]$/) {
 		$record{"scantron.$questnum.answer"}='';
 		if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
 		    push(@{$record{"scantron.missingerror"}},$questnum);
@@ -4179,8 +4202,12 @@ sub scantron_parse_scanline {
 		$record{"scantron.$questnum.answer"}=$currentquest;
 	    }
 	} elsif ($$scantron_config{'Qon'} eq 'number') {
-	    if (!$currentquest || $currentquest eq $$scantron_config{'Qoff'} ||
-		$currentquest !~ /^\d$/) {
+	    if ($currentquest eq '?') {
+		push(@{$record{'scantron.doubleerror'}},$questnum);
+		$record{"scantron.$questnum.answer"}='';
+		} elsif (!$currentquest 
+			 || $currentquest eq $$scantron_config{'Qoff'} 
+			 || $currentquest !~ /^\d$/) {
 		$record{"scantron.$questnum.answer"}='';
 		if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
 		    push(@{$record{"scantron.missingerror"}},$questnum);
@@ -4351,14 +4378,26 @@ sub check_for_error {
 sub scantron_warning_screen {
     my ($button_text)=@_;
     my $title=&Apache::lonnet::gettitle($env{'form.selectpage'});
+    my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
+    my $CODElist="a";
+    if ($scantron_config{'CODElocation'} &&
+	$scantron_config{'CODEstart'} &&
+	$scantron_config{'CODElength'}) {
+	$CODElist=$env{'form.scantron_CODElist'};
+	if ($CODElist eq '') { $CODElist='<font color="red">None</font>'; }
+	$CODElist=
+	    '<tr><td><b>List of CODES to validate against:</b></td><td><tt>'.
+	    $CODElist.'</tt></td></tr>';
+    }
     return (<<STUFF);
 <p>
 <font color="red">Please double check the information
                  below before clicking on '$button_text'</font>
 </p>
 <table>
-<tr><td><b>Sequence To be Graded:</b></td><td>$title</td></tr>
+<tr><td><b>Sequence to be Graded:</b></td><td>$title</td></tr>
 <tr><td><b>Data File that will be used:</b></td><td><tt>$env{'form.scantron_selectfile'}</tt></td></tr>
+$CODElist
 </table>
 </font>
 <br />
@@ -4565,9 +4604,8 @@ 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);
+    &Apache::lonnet::finishuserfileupload($docuname,$docudom,'sillywaytopassafilearound',$filename);
 
 }
 
@@ -4738,12 +4776,14 @@ sub scantron_get_correction {
 	if ($error eq 'incorrectCODE' 
 	    && $$scan_record{'scantron.CODE'}=~/\S/ ) {
 	    my ($max,$closest)=&scantron_get_closely_matching_CODEs($arg,$$scan_record{'scantron.CODE'});
-	    foreach my $testcode (@{$closest}) {
-		my $checked='';
-		if (!$i) { $checked=' checked="on" '; }
-		$r->print("<label><input type='radio' name='scantron_CODE_resolution' value='use_closest_$i' $checked /> Use the similar CODE <b><tt>".$testcode."</tt></b> instead.</label><input type='hidden' name='scantron_CODE_closest_$i' value='$testcode' />");
-		$r->print("\n<br />");
-		$i++;
+	    if ($closest > 0) {
+		foreach my $testcode (@{$closest}) {
+		    my $checked='';
+		    if (!$i) { $checked=' checked="on" '; }
+		    $r->print("<label><input type='radio' name='scantron_CODE_resolution' value='use_closest_$i' $checked /> Use the similar CODE <b><tt>".$testcode."</tt></b> instead.</label><input type='hidden' name='scantron_CODE_closest_$i' value='$testcode' />");
+		    $r->print("\n<br />");
+		    $i++;
+		}
 	    }
 	}
 	if ($$scan_record{'scantron.CODE'}=~/\S/ ) {
@@ -4804,17 +4844,22 @@ ENDSCRIPT
 sub scantron_bubble_selector {
     my ($r,$scan_config,$quest,@selected)=@_;
     my $max=$$scan_config{'Qlength'};
+
+    my $scmode=$$scan_config{'Qon'};
+    if ($scmode eq 'number' || $scmode eq 'letter') { $max=10; }	     
+
     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">');
+	$r->print("\n".'<td align="center">');
 	if ($selected[0] eq $alphabet[$i]) { $r->print('X'); shift(@selected) }
 	else { $r->print('&nbsp;'); }
 	$r->print('</td>');
     }
-    $r->print('<td></td></tr><tr>');
+    $r->print('</tr><tr>');
     for (my $i=0;$i<$max;$i++) {
-	$r->print('<td><label><input type="radio" name="scantron_correct_Q_'.
+	$r->print("\n".
+		  '<td><label><input type="radio" name="scantron_correct_Q_'.
 		  $quest.'" value="'.$i.'" />'.$alphabet[$i]."</label></td>");
     }
     $r->print('<td><label><input type="radio" name="scantron_correct_Q_'.
@@ -4844,11 +4889,24 @@ sub scantron_get_closely_matching_CODEs
 }
 
 sub get_codes {
-    my $old_name=$env{'form.scantron_CODElist'};
-    my $cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
-    my $cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
-    my %result=&Apache::lonnet::get('CODEs',[$old_name],$cdom,$cnum);
-    my %allcodes=map {(&Apache::lonprintout::num_to_letters($_),1)} split(',',$result{$old_name});
+    my ($old_name, $cdom, $cnum) = @_;
+    if (!$old_name) {
+	$old_name=$env{'form.scantron_CODElist'};
+    }
+    if (!$cdom) {
+	$cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
+    }
+    if (!$cnum) {
+	$cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
+    }
+    my %result=&Apache::lonnet::get('CODEs',[$old_name,"type\0$old_name"],
+				    $cdom,$cnum);
+    my %allcodes;
+    if ($result{"type\0$old_name"} eq 'number') {
+	%allcodes=map {($_,1)} split(',',$result{$old_name});
+    } else {
+	%allcodes=map {(&Apache::lonprintout::num_to_letters($_),1)} split(',',$result{$old_name});
+    }
     return %allcodes;
 }
 
@@ -5138,8 +5196,6 @@ sub scantron_upload_scantron_data_save {
     }
     my %coursedata=&Apache::lonnet::coursedescription($env{'form.domainid'}.'_'.$env{'form.courseid'});
     $r->print("Doing upload to ".$coursedata{'description'}." <br />");
-    my $home=&Apache::lonnet::homeserver($env{'form.courseid'},
-					 $env{'form.domainid'});
     my $fname=$env{'form.upfile.filename'};
     #FIXME
     #copied from lonnet::userfileupload()
@@ -5159,7 +5215,7 @@ sub scantron_upload_scantron_data_save {
     if (length($env{'form.upfile'}) < 2) {
 	$r->print("<font color='red'>Error:</font> The file you attempted to upload, <tt>".&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"')."</tt>, contained no information. Please check that you entered the correct filename.");
     } else {
-	my $result=&Apache::lonnet::finishuserfileupload($env{'form.courseid'},$env{'form.domainid'},$home,'upfile',$fname);
+	my $result=&Apache::lonnet::finishuserfileupload($env{'form.courseid'},$env{'form.domainid'},'upfile',$fname);
 	if ($result =~ m|^/uploaded/|) {
 	    $r->print("<font color='green'>Success:</font> Successfully uploaded ".(length($env{'form.upfile'})-1)." bytes of data into location <tt>".$result."</tt>");
 	} else {
@@ -5383,6 +5439,9 @@ GRADINGMENUJS
     $result.='<tr bgcolor="#ffffe6"valign="top"><td colspan="2">'.
 	'<input type="button" onClick="javascript:this.form.action=\'/adm/helper/resettimes.helper\';this.form.submit();'.
 	'" value="'.&mt('Manage').'" /> access times.</td></tr>'."\n";
+    $result.='<tr bgcolor="#ffffe6"valign="top"><td colspan="2">'.
+	'<input type="button" onClick="javascript:this.form.command.value=\'codelist\';this.form.action=\'/adm/pickcode\';this.form.submit();'.
+	'" value="'.&mt('View').'" /> saved CODEs.</td></tr>'."\n";
 
     $result.='</form></td></tr></table>'."\n".
 	'</td></tr></table>'."\n".
@@ -5390,10 +5449,32 @@ GRADINGMENUJS
     return $result;
 }
 
+sub reset_perm {
+    undef(%perm);
+}
+
+sub init_perm {
+    &reset_perm();
+    if (!($perm{'vgr'}=&Apache::lonnet::allowed('vgr',$env{'request.course.id'}))) {
+	if ($perm{'vgr'}=&Apache::lonnet::allowed('vgr',$env{'request.course.id'}.'/'.$env{'request.course.sec'})) {
+	    $perm{'vgr_section'}=$env{'request.course.sec'};
+	} else {
+	    delete($perm{'vgr'});
+	}
+    }
+    if (!($perm{'mgr'}=&Apache::lonnet::allowed('mgr',$env{'request.course.id'}))) {
+	if ($perm{'mgr'}=&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.'/'.$env{'request.course.sec'})) {
+	    $perm{'mgr_section'}=$env{'request.course.sec'};
+	} else {
+	    delete($perm{'mgr'});
+	}
+    }
+}
+
 sub handler {
     my $request=$_[0];
 
-    undef(%perm);
+    &reset_perm();
     if ($env{'browser.mathml'}) {
 	&Apache::loncommon::content_type($request,'text/xml');
     } else {
@@ -5442,20 +5523,7 @@ sub handler {
 	    }
 	}
     } else {
-	if (!($perm{'vgr'}=&Apache::lonnet::allowed('vgr',$env{'request.course.id'}))) {
-	    if ($perm{'vgr'}=&Apache::lonnet::allowed('vgr',$env{'request.course.id'}.'/'.$env{'request.course.sec'})) {
-		$perm{'vgr_section'}=$env{'request.course.sec'};
-	    } else {
-		delete($perm{'vgr'});
-	    }
-	}
-	if (!($perm{'mgr'}=&Apache::lonnet::allowed('mgr',$env{'request.course.id'}))) {
-	    if ($perm{'mgr'}=&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.'/'.$env{'request.course.sec'})) {
-		$perm{'mgr_section'}=$env{'request.course.sec'};
-	    } else {
-		delete($perm{'mgr'});
-	    }
-	}
+	&init_perm();
 	if ($command eq 'submission' && $perm{'vgr'}) {
 	    ($env{'form.student'} eq '' ? &listStudents($request) : &submission($request,0,0));
 	} elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {