--- loncom/interface/loncommon.pm	2008/05/29 02:58:41	1.655
+++ loncom/interface/loncommon.pm	2008/06/16 23:34:12	1.661
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.655 2008/05/29 02:58:41 raeburn Exp $
+# $Id: loncommon.pm,v 1.661 2008/06/16 23:34:12 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -67,6 +67,7 @@ use Apache::loncoursedata();
 use Apache::lontexconvert();
 use Apache::lonclonecourse();
 use LONCAPA qw(:DEFAULT :match);
+use DateTime::TimeZone;
 
 # ---------------------------------------------- Designs
 use vars qw(%defaultdesign);
@@ -634,6 +635,27 @@ ENDSCRT
     return $jscript;
 }
 
+sub select_timezone {
+   my ($name,$selected,$onchange,$includeempty)=@_;
+   my $output='<select name="'.$name.'" '.$onchange.'>'."\n";
+   if ($includeempty) {
+       $output .= '<option value=""';
+       if (($selected eq '') || ($selected eq 'local')) {
+           $output .= ' selected="selected" ';
+       }
+       $output .= '> </option>';
+   }
+   my @timezones = DateTime::TimeZone->all_names;
+   foreach my $tzone (@timezones) {
+       $output.= '<option value="'.$tzone.'"';
+       if ($tzone eq $selected) {
+           $output.=' selected="selected"';
+       }
+       $output.=">$tzone</option>\n";
+   }
+   $output.="</select>";
+   return $output;
+}
 
 =pod
 
@@ -7013,6 +7035,233 @@ sub get_env_multiple {
     return(@values);
 }
 
+sub ask_for_embedded_content {
+    my ($actionurl,$state,$allfiles,$codebase,$args)=@_;
+    my $upload_output = '
+   <form name="upload_embedded" action="'.$actionurl.'"
+                  method="post" enctype="multipart/form-data">';
+    $upload_output .= $state;
+    $upload_output .= '<b>Upload embedded files</b>:<br />'.&start_data_table();
+
+    my $num = 0;
+    foreach my $embed_file (sort {lc($a) cmp lc($b)} keys(%{$allfiles})) {
+        $upload_output .= &start_data_table_row().
+            '<td>'.$embed_file.'</td><td>';
+        if ($args->{'ignore_remote_references'}
+            && $embed_file =~ m{^\w+://}) {
+            $upload_output.='<span class="LC_warning">'.&mt("URL points to other server.").'</span>';
+        } elsif ($args->{'error_on_invalid_names'}
+            && $embed_file ne &Apache::lonnet::clean_filename($embed_file,{'keep_path' => 1,})) {
+
+            $upload_output.='<span class="LC_warning">'.&mt("Invalid characters").'</span>';
+
+        } else {
+            $upload_output .='
+           <input name="embedded_item_'.$num.'" type="file" value="" />
+           <input name="embedded_orig_'.$num.'" type="hidden" value="'.&escape($embed_file).'" />';
+            my $attrib = join(':',@{$$allfiles{$embed_file}});
+            $upload_output .=
+                "\n\t\t".
+                '<input name="embedded_attrib_'.$num.'" type="hidden" value="'.
+                $attrib.'" />';
+            if (exists($$codebase{$embed_file})) {
+                $upload_output .=
+                    "\n\t\t".
+                    '<input name="codebase_'.$num.'" type="hidden" value="'.
+                    &escape($$codebase{$embed_file}).'" />';
+            }
+        }
+        $upload_output .= '</td>'.&Apache::loncommon::end_data_table_row();
+        $num++;
+    }
+    $upload_output .= &Apache::loncommon::end_data_table().'<br />
+   <input type ="hidden" name="number_embedded_items" value="'.$num.'" />
+   <input type ="submit" value="'.&mt('Upload Listed Files').'" />
+   '.&mt('(only files for which a location has been provided will be uploaded)').'
+   </form>';
+    return $upload_output;
+}
+
+sub upload_embedded {
+    my ($context,$dirpath,$uname,$udom,$dir_root,$url_root,$group,$disk_quota,
+        $current_disk_usage) = @_;
+    my $output;
+    for (my $i=0; $i<$env{'form.number_embedded_items'}; $i++) {
+        next if (!exists($env{'form.embedded_item_'.$i.'.filename'}));
+        my $orig_uploaded_filename =
+            $env{'form.embedded_item_'.$i.'.filename'};
+
+        $env{'form.embedded_orig_'.$i} =
+            &unescape($env{'form.embedded_orig_'.$i});
+        my ($path,$fname) =
+            ($env{'form.embedded_orig_'.$i} =~ m{(.*/)([^/]*)});
+        # no path, whole string is fname
+        if (!$fname) { $fname = $env{'form.embedded_orig_'.$i} };
+
+        $path = $env{'form.currentpath'}.$path;
+        $fname = &Apache::lonnet::clean_filename($fname);
+        # See if there is anything left
+        next if ($fname eq '');
+
+        # Check if file already exists as a file or directory.
+        my ($state,$msg);
+        if ($context eq 'portfolio') {
+            my $port_path = $dirpath;
+            if ($group ne '') {
+                $port_path = "groups/$group/$port_path";
+            }
+            ($state,$msg) = &check_for_upload($path,$fname,$group,'embedded_item_'.$i,
+                                              $dir_root,$port_path,$disk_quota,
+                                              $current_disk_usage,$uname,$udom);
+            if ($state eq 'will_exceed_quota'
+                || $state eq 'file_locked'
+                || $state eq 'file_exists' ) {
+                $output .= $msg;
+                next;
+            }
+        } elsif (($context eq 'author') || ($context eq 'testbank')) {
+            ($state,$msg) = &check_for_existing($path,$fname,'embedded_item_'.$i);
+            if ($state eq 'exists') {
+                $output .= $msg;
+                next;
+            }
+        }
+        # Check if extension is valid
+        if (($fname =~ /\.(\w+)$/) &&
+            (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
+            $output .= &mt('Invalid file extension ([_1]) - reserved for LONCAPA use - rename the file with a different extension and re-upload. ',$1);
+            next;
+        } elsif (($fname =~ /\.(\w+)$/) &&
+                 (!defined(&Apache::loncommon::fileembstyle($1)))) {
+            $output .= &mt('Unrecognized file extension ([_1]) - rename the file with a proper extension and re-upload.',$1);
+            next;
+        } elsif ($fname=~/\.(\d+)\.(\w+)$/) {
+            $output .= &mt('File name not allowed - rename the file to remove the number immediately before the file extension([_1]) and re-upload.',$2);
+            next;
+        }
+
+        $env{'form.embedded_item_'.$i.'.filename'}=$fname;
+        if ($context eq 'portfolio') {
+            my $result=
+                &Apache::lonnet::userfileupload('embedded_item_'.$i,'',
+                                                $dirpath.$path);
+            if ($result !~ m|^/uploaded/|) {
+                $output .= '<span class="LC_error">'
+                      .&mt('An error occurred ([_1]) while trying to upload [_2] for embedded element [_3].'
+                           ,$result,$orig_uploaded_filename,$env{'form.embedded_orig_'.$i})
+                      .'</span><br />';
+                next;
+            } else {
+                $output .= '<p>'.&mt('Uploaded [_1]','<span class="LC_filename">'.
+                           $path.$fname.'</span>').'</p>';     
+            }
+        } else {
+# Save the file
+            my $target = $env{'form.embedded_item_'.$i};
+            my $fullpath = $dir_root.$dirpath.'/'.$path;
+            my $dest = $fullpath.$fname;
+            my $url = $url_root.$dirpath.'/'.$path.$fname;
+            my @parts=split(/\//,$fullpath);
+            my $count;
+            my $filepath = $dir_root;
+            for ($count=4;$count<=$#parts;$count++) {
+                $filepath .= "/$parts[$count]";
+                if ((-e $filepath)!=1) {
+                    mkdir($filepath,0770);
+                }
+            }
+            my $fh;
+            if (!open($fh,'>'.$dest)) {
+                &Apache::lonnet::logthis('Failed to create '.$dest);
+                $output .= '<span class="LC_error">'.
+                           &mt('An error occurred while trying to upload [_1] for embedded element [_2].',$orig_uploaded_filename,$env{'form.embedded_orig_'.$i}).
+                           '</span><br />';
+            } else {
+                if (!print $fh $env{'form.embedded_item_'.$i}) {
+                    &Apache::lonnet::logthis('Failed to write to '.$dest);
+                    $output .= '<span class="LC_error">'.
+                              &mt('An error occurred while writing the file [_1] for embedded element [_2].',$orig_uploaded_filename,$env{'form.embedded_orig_'.$i}).
+                              '</span><br />';
+                } else {
+                    if ($context eq 'testbank') {
+                        $output .= &mt('Embedded file uploaded successfully:').
+                                   '&nbsp;<a href="'.$url.'">'.
+                                   $orig_uploaded_filename.'</a><br />';
+                    } else {
+                        $output .= '<font size="+2">'.
+                                   &mt('View embedded file: [_1]','<a href="'.$url.'">'.
+                                   $orig_uploaded_filename.'</a>').'</font><br />';
+                    }
+                }
+                close($fh);
+            }
+        }
+    }
+    return $output;
+}
+
+sub check_for_existing {
+    my ($path,$fname,$element) = @_;
+    my ($state,$msg);
+    if (-d $path.'/'.$fname) {
+        $state = 'exists';
+        $msg = &mt('Unable to upload [_1]. A directory by that name was found in [_2].','<span class="LC_filename">'.$fname.'</span>',$path);
+    } elsif (-e $path.'/'.$fname) {
+        $state = 'exists';
+        $msg = &mt('Unable to upload [_1]. A file by that name was found in [_2].','<span class="LC_filename">'.$fname.'</span>',$path);
+    }
+    if ($state eq 'exists') {
+        $msg = '<span class="LC_error">'.$msg.'</span><br />';
+    }
+    return ($state,$msg);
+}
+
+sub check_for_upload {
+    my ($path,$fname,$group,$element,$portfolio_root,$port_path,
+        $disk_quota,$current_disk_usage,$uname,$udom) = @_;
+    my $filesize = (length($env{'form.'.$element})) / 1000; #express in k (1024?)
+    my $getpropath = 1;
+    my @dir_list = &Apache::lonnet::dirlist($portfolio_root.$path,$udom,$uname,
+                                            $getpropath);
+    my $found_file = 0;
+    my $locked_file = 0;
+    foreach my $line (@dir_list) {
+        my ($file_name)=split(/\&/,$line,2);
+        if ($file_name eq $fname){
+            $file_name = $path.$file_name;
+            if ($group ne '') {
+                $file_name = $group.$file_name;
+            }
+            $found_file = 1;
+            if (&Apache::lonnet::is_locked($file_name,$udom,$uname) eq 'true') {
+                $locked_file = 1;
+            }
+        }
+    }
+    my $getpropath = 1;
+    if (($current_disk_usage + $filesize) > $disk_quota){
+        my $msg = '<span class="LC_error">'.
+                &mt('Unable to upload [_1]. (size = [_2] kilobytes). Disk quota will be exceeded.','<span class="LC_filename">'.$fname.'</span>',$filesize).'</span>'.
+                  '<br />'.&mt('Disk quota is [_1] kilobytes. Your current disk usage is [_2] kilobytes.',$disk_quota,$current_disk_usage);
+        return ('will_exceed_quota',$msg);
+    } elsif ($found_file) {
+        if ($locked_file) {
+            my $msg = '<span class="LC_error">';
+            $msg .= &mt('Unable to upload [_1]. A locked file by that name was found in [_2].','<span class="LC_filename">'.$fname.'</span>','<span class="LC_filename">'.$port_path.$env{'form.currentpath'}.'</span>');
+            $msg .= '</span><br />';
+            $msg .= &mt('You will be able to rename or delete existing [_1] after a grade has been assigned.','<span class="LC_filename">'.$fname.'</span>');
+            return ('file_locked',$msg);
+        } else {
+            my $msg = '<span class="LC_error">';
+            $msg .= &mt('Unable to upload [_1]. A file by that name was found in [_2].','<span class="LC_filename">'.$fname.'</span>',$port_path.$env{'form.currentpath'});
+            $msg .= '</span>';
+            $msg .= '<br />';
+            $msg .= &mt('To upload, rename or delete existing [_1] in [_2].','<span class="LC_filename">'.$fname.'</span>', $port_path.$env{'form.currentpath'});
+            return ('file_exists',$msg);
+        }
+    }
+}
+
 
 =pod