--- loncom/lonnet/perl/lonnet.pm	2002/08/23 13:21:36	1.272
+++ loncom/lonnet/perl/lonnet.pm	2002/09/07 17:53:05	1.279
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.272 2002/08/23 13:21:36 matthew Exp $
+# $Id: lonnet.pm,v 1.279 2002/09/07 17:53:05 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1569,6 +1569,9 @@ sub get {
 
    my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
    my @pairs=split(/\&/,$rep);
+   if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
+     return @pairs;
+   }
    my %returnhash=();
    my $i=0;
    foreach (@$storearr) {
@@ -2338,6 +2341,7 @@ sub createcourse {
     unless ($nonstandard) {
 # ------------------------------------------ For standard courses, make top url
         my $mapurl=&clutter($url);
+        if ($mapurl eq '/res/') { $mapurl=''; }
         $ENV{'form.initmap'}=(<<ENDINITMAP);
 <map>
 <resource id="1" type="start"></resource>
@@ -2455,6 +2459,30 @@ sub dirlist {
     }
 }
 
+# --------------------------------------------- GetFileTimestamp
+# This function utilizes dirlist and returns the date stamp for
+# when it was last modified.  It will also return an error of -1
+# if an error occurs
+
+sub GetFileTimestamp {
+    my ($studentDomain,$studentName,$filename,$root)=@_;
+    $studentDomain=~s/\W//g;
+    $studentName=~s/\W//g;
+    my $subdir=$studentName.'__';
+    $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
+    my $proname="$studentDomain/$subdir/$studentName";
+    $proname .= '/'.$filename;
+    my @dir = &Apache::lonnet::dirlist($proname, $studentDomain, $studentName,
+                                       $root);
+    my $fileStat = $dir[0];
+    my @stats = split('&', $fileStat);
+    if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
+        return $stats[9];
+    } else {
+        return -1;
+    }
+}
+
 # -------------------------------------------------------- Value of a Condition
 
 sub directcondval {
@@ -2507,6 +2535,14 @@ sub condval {
     return $result;
 }
 
+# ---------------------------------------------------- Devalidate courseresdata
+
+sub devalidatecourseresdata {
+    my ($coursenum,$coursedomain)=@_;
+    my $hashid=$coursenum.':'.$coursedomain;
+    delete $courseresdatacache{$hashid.'.time'};
+}
+
 # --------------------------------------------------- Course Resourcedata Query
 
 sub courseresdata {
@@ -2747,7 +2783,7 @@ sub metadata {
 # Look at timestamp of caching
 # Everything is cached by the main uri, libraries are never directly cached
 #
-    unless (abs($metacache{$uri.':cachedtimestamp'}-time)<600) {
+    unless (abs($metacache{$uri.':cachedtimestamp'}-time)<600 && !defined($liburi)) {
 #
 # Is this a recursive call for a library?
 #
@@ -2770,7 +2806,7 @@ sub metadata {
 	      my $package=$token->[2]->{'package'};
 	      my $keyroot='';
               if ($prefix) {
-		  $keyroot.='_'.$prefix;
+		  $keyroot.=$prefix;
               } else {
                 if (defined($token->[2]->{'part'})) { 
                    $keyroot.='_'.$token->[2]->{'part'}; 
@@ -2828,12 +2864,14 @@ sub metadata {
 #
 # Importing a library here
 #                
-		 if (defined($depthcount)) { $depthcount++; } else 
-                                           { $depthcount=0; }
                  if ($depthcount<20) {
-		     foreach (split(/\,/,&metadata($uri,'keys',
-                                  $parser->get_text('/import'),$unikey,
-                                  $depthcount))) {
+		     my $location=$parser->get_text('/import');
+		     my $dir=$filename;
+		     $dir=~s|[^/]*$||;
+		     $location=&filelocation($dir,$location);
+		     foreach (sort(split(/\,/,&metadata($uri,'keys',
+							$location,$unikey,
+							$depthcount+1)))) {
                          $metathesekeys{$_}=1;
 		     }
 		 }
@@ -2858,8 +2896,9 @@ sub metadata {
 # the next is the end of "start tag"
 	 }
        }
-	&metadata_generate_part0(\%metathesekeys,\%metacache,$uri);
        $metacache{$uri.':keys'}=join(',',keys %metathesekeys);
+	&metadata_generate_part0(\%metathesekeys,\%metacache,$uri);
+       $metacache{$uri.':allpossiblekeys'}=join(',',keys %metathesekeys);
        $metacache{$uri.':cachedtimestamp'}=time;
 # this is the end of "was not already recently cached
     }