--- loncom/lonnet/perl/lonnet.pm	2016/06/19 04:28:19	1.1312
+++ loncom/lonnet/perl/lonnet.pm	2016/07/01 19:59:46	1.1313
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1312 2016/06/19 04:28:19 raeburn Exp $
+# $Id: lonnet.pm,v 1.1313 2016/07/01 19:59:46 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -10216,6 +10216,115 @@ sub stat_file {
     return ();
 }
 
+# --------------------------------------------------------- recursedirs
+# Recursive function to traverse either a specific user's Authoring Space
+# or corresponding Published Resource Space, and populate the hash ref:
+# $dirhashref with URLs of all directories, and if $filehashref hash
+# ref arg is provided, the URLs of any files, excluding versioned, .meta,
+# or .rights files in resource space, and .meta, .save, .log, and .bak
+# files in Authoring Space.
+#
+# Inputs:
+#
+# $is_home - true if current server is home server for user's space
+# $context - either: priv, or res respectively for Authoring or Resource Space.
+# $docroot - Document root (i.e., /home/httpd/html
+# $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
+# $relpath - Current path (relative to top level).
+# $dirhashref - reference to hash to populate with URLs of directories (Required)
+# $filehashref - reference to hash to populate with URLs of files (Optional)
+#
+# Returns: nothing
+#
+# Side Effects: populates $dirhashref, and $filehashref (if provided).
+#
+# Currently used by interface/londocs.pm to create linked select boxes for
+# directory and filename to import a Course "Author" resource into a course, and
+# also to create linked select boxes for Authoring Space and Directory to choose
+# save location for creation of a new "standard" problem from the Course Editor.
+#
+
+sub recursedirs {
+    my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
+    return unless (ref($dirhashref) eq 'HASH');
+    my $currpath = $docroot.$toppath;
+    if ($relpath) {
+        $currpath .= "/$relpath";
+    }
+    my $savefile;
+    if (ref($filehashref)) {
+        $savefile = 1;
+    }
+    if ($is_home) {
+        if (opendir(my $dirh,$currpath)) {
+            foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
+                next if ($item eq '');
+                if (-d "$currpath/$item") {
+                    my $newpath;
+                    if ($relpath) {
+                        $newpath = "$relpath/$item";
+                    } else {
+                        $newpath = $item;
+                    }
+                    $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
+                    &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
+                } elsif ($savefile) {
+                    if ($context eq 'priv') {
+                        unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
+                            $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
+                        }
+                    } else {
+                        unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
+                            $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
+                        }
+                    }
+                }
+            }
+            closedir($dirh);
+        }
+    } else {
+        my ($dirlistref,$listerror) =
+            &dirlist($toppath.$relpath);
+        my @dir_lines;
+        my $dirptr=16384;
+        if (ref($dirlistref) eq 'ARRAY') {
+            foreach my $dir_line (sort
+                              {
+                                  my ($afile)=split('&',$a,2);
+                                  my ($bfile)=split('&',$b,2);
+                                  return (lc($afile) cmp lc($bfile));
+                              } (@{$dirlistref})) {
+                my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
+                    split(/\&/,$dir_line,16);
+                $item =~ s/\s+$//;
+                next if (($item =~ /^\.\.?$/) || ($obs));
+                if ($dirptr&$testdir) {
+                    my $newpath;
+                    if ($relpath) {
+                        $newpath = "$relpath/$item";
+                    } else {
+                        $relpath = '/';
+                        $newpath = $item;
+                    }
+                    $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
+                    &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
+                } elsif ($savefile) {
+                    if ($context eq 'priv') {
+                        unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
+                            $filehashref->{$relpath}{$item} = 1;
+                        }
+                    } else {
+                        unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
+                            $filehashref->{$relpath}{$item} = 1;
+                        }
+                    }
+                }
+            }
+        }
+    }
+    return;
+}
+
 # -------------------------------------------------------- Value of a Condition
 
 # gets the value of a specific preevaluated condition