--- loncom/homework/grades.pm	2003/09/25 02:46:19	1.130.2.1.2.2
+++ loncom/homework/grades.pm	2003/09/22 20:48:21	1.142
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.130.2.1.2.2 2003/09/25 02:46:19 albertel Exp $
+# $Id: grades.pm,v 1.142 2003/09/22 20:48:21 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -218,7 +218,8 @@ sub commonJSfunctions {
 		}
 	    }
 	} else {
-	    if (selectOne.selected) return selectOne.value;
+            // only one value it must be the selected one
+	    return selectOne.value;
 	}
     }
 </script>
@@ -517,8 +518,8 @@ LISTJAVASCRIPT
     my $saveStatus = $ENV{'form.Status'} eq '' ? 'Active' : $ENV{'form.Status'};
     $ENV{'form.Status'} = $saveStatus;
 
-    $gradeTable.='<input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> last sub only'."\n".
-	'<input type="radio" name="lastSub" value="last" /> last sub & parts info'."\n".
+    $gradeTable.='<input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> last submission only'."\n".
+	'<input type="radio" name="lastSub" value="last" /> last submission & parts info'."\n".
 	'<input type="radio" name="lastSub" value="datesub" /> by dates and submissions'."\n".
 	'<input type="radio" name="lastSub" value="all" /> all details'."\n".
 	'<input type="hidden" name="section"     value="'.$getsec.'" />'."\n".
@@ -544,7 +545,7 @@ LISTJAVASCRIPT
     $gradeTable.='<input type="button" '."\n".
 	'onClick="javascript:checkSelect(this.form.stuinfo);" '."\n".
 	'value="Next->" />'."\n";
-
+    $gradeTable.='<input type="checkbox" name="checkPlag" checked="on">Check For Plagiarism</input>';
     my (undef, undef, $fullname) = &getclasslist($getsec,'1');  
     $gradeTable.='<table border="0"><tr><td bgcolor="#777777">'.
 	'<table border="0"><tr bgcolor="#e6ffff">';
@@ -1461,13 +1462,20 @@ KEYWORDS
 				my ($ressub,$subval) = split(/:/,$_,2);
                             # Similarity check
 				my $similar='';
-				my ($oname,$odom,$ocrsid,$oessay,$osim)=&most_similar($uname,$udom,$subval);
-				if ($osim) {
-				    $osim=int($osim*100.0);
-				    $similar='<hr /><h3><font color="#FF0000">Essay is '.$osim.
-					'% similar to an essay by '.&Apache::loncommon::plainname($oname,$odom).
-					'</font></h3><blockquote><i>'.
-					&keywords_highlight($oessay).'</i></blockquote><hr />';
+				my $oname;
+				my $odom;
+				my $ocrsid;
+				my $oessay;
+				my $osim;
+				if($ENV{'form.checkPlag'}){
+				    ($oname,$odom,$ocrsid,$oessay,$osim)=&most_similar($uname,$udom,$subval);
+				    if ($osim) {
+					$osim=int($osim*100.0);
+					$similar='<hr /><h3><font color="#FF0000">Essay is '.$osim.
+					    '% similar to an essay by '.&Apache::loncommon::plainname($oname,$odom).
+					    '</font></h3><blockquote><i>'.
+					    &keywords_highlight($oessay).'</i></blockquote><hr />';
+				    }
 				}
 				$lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
 				    $partid.'</b> <font color="#999999">( ID '.$respid.
@@ -1480,7 +1488,7 @@ KEYWORDS
 				     'this file may contain virusses</font><br />':'').
 				     '<b>Submitted Answer: </b>'.
 				     &cleanRecord($subval,$responsetype,$symb).
-				      '<br /><br />'.$similar."\n"
+				     '<br /><br />'.$similar."\n"
 				     if ($ENV{'form.lastSub'} eq 'lastonly' || 
 					 ($ENV{'form.lastSub'} eq 'hdgrade' && 
 					  $$handgrade{$part} =~ /:yes$/));
@@ -2327,18 +2335,17 @@ sub editgrades {
 		$newrecord{'resource.'.$_.'.awarded'} = 0;
 		$newrecord{'resource.'.$_.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
 		$updateflag = 1;
+	    } elsif (!($old_part eq $partial && $old_score eq $score)) {
+		$updateflag = 1;
+		$newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
+		$newrecord{'resource.'.$_.'.solved'}   = $score;
+		$rec_update++;
 	    }
 
 	    $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
 		'<td align="center">'.$awarded.
 		($score eq 'excused' ? $score : '').'&nbsp;</td>';
 
-	    if (!($old_part eq $partial && $old_score eq $score)) {
-		$updateflag = 1;
-		$newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
-		$newrecord{'resource.'.$_.'.solved'}   = $score;
-		$rec_update++;
-	    }
 
 	    my $partid=$_;
 	    foreach my $stores (@parts) {
@@ -2726,7 +2733,9 @@ LISTJAVASCRIPT
     $result.='<form action="/adm/grades" method="post" name="displayPage">'."\n";
     $result.='&nbsp;<b>Problems from:</b> <select name="selectpage">'."\n";
     my ($titles,$symbx) = &getSymbMap($request);
-    my ($curpage,$type,$mapId) = ($symb =~ /(.*?\.(page|sequence))___(\d+)___/); 
+    my ($curpage) =&Apache::lonnet::decode_symb($symb); 
+#    my ($curpage,$mapId) =&Apache::lonnet::decode_symb($symb); 
+#    my $type=($curpage =~ /\.(page|sequence)/);
     my $ctr=0;
     foreach (@$titles) {
 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
@@ -2798,9 +2807,7 @@ LISTJAVASCRIPT
 
 sub getSymbMap {
     my ($request) = @_;
-    my $navmap = Apache::lonnavmaps::navmap-> new($ENV{'request.course.fn'}.'.db',
-						  $ENV{'request.course.fn'}.'_parms.db');
-#    $navmap->init();
+    my $navmap = Apache::lonnavmaps::navmap->new();
 
     my %symbx = ();
     my @titles = ();
@@ -2845,9 +2852,8 @@ sub displayPage {
     &sub_page_js($request);
     $request->print($result);
 
-    my $navmap = Apache::lonnavmaps::navmap-> new($ENV{'request.course.fn'}.'.db',
-						  $ENV{'request.course.fn'}.'_parms.db',1, 1);
-    my ($mapUrl, $id, $resUrl) = split(/___/, $ENV{'form.page'});
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    my ($mapUrl, $id, $resUrl)=&Apache::lonnet::decode_symb($ENV{'form.page'});
     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 
     my $iterator = $navmap->getIterator($map->map_start(),
@@ -3008,9 +3014,8 @@ sub updateGradeByPage {
 
     $request->print($result);
 
-    my $navmap = Apache::lonnavmaps::navmap-> new($ENV{'request.course.fn'}.'.db',
-						  $ENV{'request.course.fn'}.'_parms.db',1, 1);
-    my ($mapUrl, $id, $resUrl) = split(/___/, $ENV{'form.page'});
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $ENV{'form.page'});
     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 
     my $iterator = $navmap->getIterator($map->map_start(),
@@ -3132,7 +3137,7 @@ sub getSequenceDropDown {
     my ($request,$symb)=@_;
     my $result='<select name="selectpage">'."\n";
     my ($titles,$symbx) = &getSymbMap($request);
-    my ($curpage,$type,$mapId) = ($symb =~ /(.*?\.(page|sequence))___(\d+)___/); 
+    my ($curpage)=&Apache::lonnet::decode_symb($symb); 
     my $ctr=0;
     foreach (@$titles) {
 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
@@ -3146,8 +3151,6 @@ sub getSequenceDropDown {
 }
 
 sub scantron_uploads {
-    #FIXME need to support scantron files put in another location,
-    # maybe the course directory? a scantron dir in the course directory?
     if (!-e $Apache::lonnet::perlvar{'lonScansDir'}) { return ''};
     my $result=	'<select name="scantron_selectfile">';
     opendir(DIR,$Apache::lonnet::perlvar{'lonScansDir'});
@@ -3184,8 +3187,6 @@ sub scantron_selectphase {
     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,
     $result.= <<SCANTRONFORM;
 <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantro_process">
   <input type="hidden" name="command" value="scantron_validate" />
@@ -3230,7 +3231,6 @@ sub get_scantron_config {
     my ($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; }
@@ -3247,12 +3247,6 @@ sub get_scantron_config {
 	$config{'Qlength'}=$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;
@@ -3283,15 +3277,6 @@ sub scantron_parse_scanline {
     }
     $record{'scantron.ID'}=substr($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) {
@@ -3302,7 +3287,6 @@ sub scantron_parse_scanline {
 	my (@array)=split(/$$scantron_config{'Qon'}/,$currentquest);
 	if (scalar(@array) gt 2) {
 	    #FIXME do something intelligent with double bubbles
-	    #actually not a concern right now, should be taking care of later
 	    Apache->request->print("<br ><b>Wha!!!</b> <pre>".scalar(@array).
 				   '-'.$currentquest.'-'.$questnum.'</pre><br />');
 	}
@@ -3356,130 +3340,11 @@ sub scantron_filter {
 
 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 $result= <<SCANTRONFORM;
-<form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
-  <input type="hidden" name="command" value="scantron_validate" />
-  <input type="hidden" name="selectpage" value="$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'}" />
-  $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)) {
-	my $which="scantron_validate_".$validate_phases[$currentphase];
-	{
-	    no strict 'refs';
-	    ($stop,$currentphase)=&$which($r,$currentphase);
-	}
-    }
-    $r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
-}
-
-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 $scanlines=Apache::File->new($Apache::lonnet::perlvar{'lonScansDir'}."/$ENV{'form.scantron_selectfile'}");
-    #FIXME really would prefer a scantron directory but tokenwrapper
-    # doesn't allow access to subdirs of userfiles
-    my $scanlines=&Apache::lonnet::getfile('/uploaded/'.
-		   $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.'/'.
-		   $ENV{'course.'.$ENV{'request.course.id'}.'.num'}.'/'.
-		       'scantron_'.$ENV{'form.scantron_selectfile'});
-    
-    my @scanlines=split("\n",$scanlines);
-
-    my %found=('ids'=>{},'usernames'=>{});
-    foreach my $line (@scanlines) {
-	my $scan_record=&scantron_parse_scanline($line,\%scantron_config);
-	my $id=$$scan_record{'scantron.ID'};
-	$r->print("<p>Checking ID ".$$scan_record{'scantron.ID'}."</p>\n");
-	my $found;
-	foreach my $checkid (keys(%idmap)) {
-	    if (lc($checkid) eq lc($id)) {
-		if ($checkid ne $id) {
-		    $r->print("<p>Using $checkid for bubbled $id</p>\n");
-		}
-		$found=$checkid;last;
-	    }
-	}
-	if ($found) {
-	    if ($found{'ids'}{$found}) {
-		&scantron_get_ID_correction($r,$line,$scan_record,'duplicate',$found);
-		return(1);
-	    } else {
-		$found{'ids'}{$found}++;
-	    }
-	} else {
-	    &scantron_get_ID_correction($r,$line,$scan_record,'incorrect');
-	    return(1);
-	}
-    }
-
-    return (0,$currentphase+1);
-}
-
-sub scantron_get_ID_correction {
-    my ($r,$line,$scan_record,$error,$arg)=@_;
-    $r->print("<p>need to correct ID</p>\n");
-    $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
-    $r->print('<input type="hidden" name="scantron_line" value="'.&HTML::Entities::encode($line).'" />'."\n");
-    if ($error eq 'unknown') {
-	$r->print("<p> Unknown ID </p>\n");
-    } elsif ($error eq 'duplicate') {
-	$r->print("<p> Duplicated ID </p>\n");
-    }
-    $r->print("<p>Original ID is ".$$scan_record{'scantron.ID'}."</p>\n");
-    $r->print("<p>Name on paper is ".$$scan_record{'scantron.LastName'}.",".
-	      $$scan_record{'scantron.FirstName'}."</p>");
-    $r->print("Corrected User -- ");
-    $r->print("\nusername:<input type='text' name='scantron_username' value='' />");
-    $r->print("\ndomain:".
-	      &Apache::loncommon::select_dom_form(undef,'scantron_domain'));
-    #FIXME it would be nice if this sent back the user ID and
-    #could do partial userID matches
-    $r->print(&Apache::loncommon::selectstudent_link('scantronupload',
-				       'scantron_username','scantron_domain'));
-    &scantron_end_validate_form($r);
-}
-
-sub scantron_end_validate_form {
-    my ($r) = @_;
-    $r->print('<input type="submit" name="submit" /></form></body></html>');
 }
 
 sub scantron_process_students {
     my ($r) = @_;
-    my (undef,undef,$sequence)=split(/___/,$ENV{'form.selectpage'});
+    my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($ENV{'form.selectpage'});
     my ($symb,$url)=&get_symb_and_url($r);
     if (!$symb) {return '';}
     my $default_form_data=&defaultFormData($symb,$url);
@@ -3489,7 +3354,7 @@ sub scantron_process_students {
     my @scanlines=<$scanlines>;
     my $classlist=&Apache::loncoursedata::get_classlist();
     my %idmap=&username_to_idmap($classlist);
-    my $navmap=Apache::lonnavmaps::navmap->new($ENV{'request.course.fn'}.'.db',$ENV{'request.course.fn'}.'_parms.db',1, 1);
+    my $navmap=Apache::lonnavmaps::navmap->new();
     my $map=$navmap->getResourceByUrl($sequence);
     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 #    $r->print("geto ".scalar(@resources)."<br />");
@@ -3764,9 +3629,9 @@ sub handler {
 
     undef(%perm);
     if ($ENV{'browser.mathml'}) {
-	$request->content_type('text/xml');
+	&Apache::loncommon::content_type($request,'text/xml');
     } else {
-	$request->content_type('text/html');
+	&Apache::loncommon::content_type($request,'text/html');
     }
     $request->send_http_header;
     return '' if $request->header_only;
@@ -3776,7 +3641,7 @@ sub handler {
     my $command=$ENV{'form.command'};
     if (!$url) {
 	my ($temp1,$temp2);
-	($temp1,$temp2,$ENV{'form.url'})=split(/___/,$symb);
+	($temp1,$temp2,$ENV{'form.url'})=&Apache::lonnet::decode_symb($symb);
 	$url = $ENV{'form.url'};
     }
     &send_header($request);
@@ -3789,7 +3654,7 @@ sub handler {
 		my ($tsymb,$tuname,$tudom,$tcrsid)=
 		    &Apache::lonnet::checkin($token);
 		if ($tsymb) {
-		    my ($map,$id,$url)=split(/\_\_\_/,$tsymb);
+		    my ($map,$id,$url)=&Apache::lonnet::decode_symb($tsymb);
 		    if (&Apache::lonnet::allowed('mgr',$tcrsid)) {
 			$request->print(&Apache::lonnet::ssi_body('/res/'.$url,
 					  ('grade_username' => $tuname,