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Diff for /loncom/interface/lonindexer.pm between versions 1.8 and 1.213.4.7

version 1.8, 2001/05/31 21:38:58 version 1.213.4.7, 2014/06/09 21:35:19
Line 1 Line 1
 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
 # Directory Indexer  # Directory Indexer
 # (Login Screen  #
 # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14 Gerd Kortemeyer)  # $Id$
 # 11/23 Gerd Kortemeyer  #
 # 07/20-08/04 H.K. Ng  # Copyright Michigan State University Board of Trustees
 #  #
 # 05/9-05/19/2001 H. K. Ng  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 # 05/21/2001 H. K. Ng  #
 # 05/23/2001 H. K. Ng  # LON-CAPA is free software; you can redistribute it and/or modify
 # 05/31/2001 Scott Harrison  # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   #
   ###
   
   ###############################################################################
   ##                                                                           ##
   ## ORGANIZATION OF THIS PERL MODULE                                          ##
   ##                                                                           ##
   ## 1. Description of functions                                               ##
   ## 2. Modules used by this module                                            ##
   ## 3. Choices for different output views (detailed, summary, xml, etc)       ##
   ## 4. Handling routine called via Apache and mod_perl                        ##
   ## 5. Other subroutines                                                      ##
   ##                                                                           ##
   ###############################################################################
   
 package Apache::lonindexer;  package Apache::lonindexer;
   
   # ------------------------------------------------- modules used by this module
 use strict;  use strict;
 use Apache::lonnet();  use Apache::lonnet;
   use Apache::loncommon();
   use Apache::lonhtmlcommon();
   use Apache::lonsequence();
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
   use Apache::lonmeta;
 use Apache::File;  use Apache::File;
   use Apache::lonlocal;
   use Apache::lonsource();
   use Apache::groupsort();
 use GDBM_File;  use GDBM_File;
   use LONCAPA qw(:match);
   
 my %hash;  # ---------------------------------------- variables used throughout the module
 my %dirs;  my %hash; # global user-specific gdbm file
 my %language;  my %dirs; # keys are directories, values are the open/close status
 my $hidden;  my %dynhash; # hash of hashes for dynamic metadata
 my $extrafield;  my %dynread; # hash of directories already read for dynamic metadata
 my $fnum=0;  my %fieldnames; # Metadata fieldnames
 sub BEGIN {  # ----- Values which are set by the handler subroutine and are accessible to
     my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/language.tab');  # -----     other methods.
     map {  my $extrafield; # default extra table cell
  $_=~/(\w+)\s+([\w\s\-]+)/;  my $fnum; # file counter
  $language{$1}=$2;  my $dnum; # directory counter
     } <$fh>;  
 }  # ----- Used to include or exclude files with certain extensions.
   my @Only = ();
   my @Omit = ();
   
   
   
   
   # ----------------------------- Handling routine called via Apache and mod_perl
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
     $r->content_type('text/html');      my $c = $r->connection();
       &Apache::loncommon::content_type($r,'text/html');
       &Apache::loncommon::no_cache($r);
     $r->send_http_header;      $r->send_http_header;
     return OK if $r->header_only;      return OK if $r->header_only;
       $fnum=0;
       $dnum=0;
   
     my $iconpath= $r->dir_config('lonIconsURL');      # Deal with stupid global variables (is there a way around making
     my $domain  = $r->dir_config('lonDefDomain');      # these global to this package?  It is just so wrong....)
     my $role    = $r->dir_config('lonRole');      undef (@Only);
     my $loadlim = $r->dir_config('lonLoadLim');      undef (@Omit);
     my $servadm = $r->dir_config('lonAdmEMail');      %fieldnames=&Apache::lonmeta::fieldnames();
     my $sysadm  = $r->dir_config('lonSysEMail');  
     my $lonhost = $r->dir_config('lonHostID');  
     my $tabdir  = $r->dir_config('lonTabDir');  
   
     my $iconpath='/res/adm/pages/indexericons/';  # --------------------------------------------------------------- get icon path
     my $fileclr='#ffffe6';      my $iconpath= $r->dir_config('lonIconsURL') . "/";
 # -------------------------------------- see if called from an interactive mode  
     map {  
        my ($name, $value) = split(/=/,$_);  
        $value =~ tr/+/ /;  
        $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;  
        if ($name eq 'catalogmode') {  
            $ENV{'form.'.$name}=$value;  
    }  
     } (split(/&/,$ENV{'QUERY_STRING'}));  
   
     $hidden=''; my $closebutton='';  #SB my $fileclr='#ffffe6';
       my $line;
       my (@attrchk,@openpath,$typeselect);
       my $uri=$r->uri;
   
   # -------------------------------------- see if called from an interactive mode
       # Get the parameters from the query string
       &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
        ['catalogmode','launch','acts','mode','form','element',
                 'only','omit','titleelement']);
       #-------------------------------------------------------------------
       my $closebutton='';
     my $groupimportbutton='';      my $groupimportbutton='';
     my $colspan='';       my $colspan=''; 
     if ($ENV{'form.catalogmode'} eq 'interactive') {      
  $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.      $extrafield='';
     '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.      my $diropendb = LONCAPA::tempdir() .
     ' border="0"></td>';   "$env{'user.domain'}_$env{'user.name'}_sel_res.db";
  $colspan=" colspan='2' ";      %hash = ();
  $hidden=<<END;      {
 <input type='hidden' name='catalogmode' value='interactive'>   my %dbfile;
 END   if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_WRITER(),0640)) {
         $closebutton=<<END;      if ($env{'form.launch'} eq '1') {
 <input type="button" name="close" value='CLOSE' onClick="self.close()">   &start_fresh_session(\%dbfile);
 END      }
       while(my($key,$value)=each(%dbfile)) {
    $hash{$key}=$value;
       }
       untie(%dbfile);
    }
     }      }
     elsif ($ENV{'form.catalogmode'} eq 'groupimport') {  # - Evaluate actions from previous page (both cumulatively and chronologically)
  $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.          if ($env{'form.catalogmode'} eq 'import' || $hash{'form.catalogmode'} eq 'import') {
     '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.      &Apache::groupsort::update_actions_hash(\%hash);
     ' border="0"></td>';   }
  $colspan=" colspan='2' ";      
  $hidden=<<END;      {
 <input type='hidden' name='catalogmode' value='groupimport'>    #Hijack lonindexer to verify a title and be close down.
      if ($env{'form.launch'} eq '2') {
          &Apache::loncommon::content_type($r,'text/html');
          my $extra='';
          if (defined($env{'form.titleelement'}) && 
      $env{'form.titleelement'} ne '') {
      my $verify_title = &Apache::lonnet::gettitle($env{'form.acts'});
   #   &Apache::lonnet::logthis("Hrrm $env{'form.acts'} -- $verify_title");
      $verify_title=~s/'/\\'/g;
      $extra='window.opener.document.forms["'.$env{'form.form'}.'"].elements["'.$env{'form.titleelement'}.'"].value=\''.$verify_title.'\';';
          }
          my $js = <<ENDSUBM;
          <script type="text/javascript">
    function load() {
    window.opener.document.forms["$env{'form.form'}"]
       .elements["$env{'form.element'}"]
       .value='$env{'form.acts'}';
    $extra
    window.close();
    }
             </script>
   ENDSUBM
          $r->print(&Apache::loncommon::start_page(undef,$js,
    {'only_body'   =>1,
                                                    'add_modal' => 1,
                                                    'add_wishlist' => 1,
    'add_entries' =>
        {'onload' => "load();"},}
    ).
    &Apache::loncommon::end_page());
          return OK;
      }
       
   # -------------------- refresh environment with user database values (in %hash)
    &setvalues(\%hash,'form.catalogmode',\%env,'form.catalogmode'   );
   
   # --------------------- define extra fields and buttons in case of special mode
    if ($env{'form.catalogmode'} eq 'interactive') {
   #SB    $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
               $extrafield='<td class="LC_bottom">'.
    '<img alt="" src="'.$iconpath.'whitespace1.gif"'.
    ' class="LC_icon" /></td>';
       $colspan=" colspan='2' ";
               my $cl=&mt('Close');
               $closebutton=<<END;
   <input type="button" name="close" value='$cl' onclick="self.close()" />
 END  END
         $closebutton=<<END;          }
 <input type="button" name="close" value='CLOSE' onClick="self.close()">   elsif ($env{'form.catalogmode'} eq 'import') {
   #SB    $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
               $extrafield='<td class="LC_bottom">'.
    '<img alt="" src="'.$iconpath.'whitespace1.gif"'.
    ' class="LC_icon" /></td>';
       $colspan=" colspan='2' ";
       my $cl=&mt('Close');
               my $gi=&mt('Import');
               $closebutton=<<END;
   <input type="button" name="close" value='$cl' onclick="self.close()" />
 END  END
         $groupimportbutton=<<END;              $groupimportbutton=<<END;
 <input type="button" name="groupimport" value='GROUP IMPORT' onClick="javascript:select_group()">  <input type="button" name="groupimport" value='$gi'
   onclick="javascript:select_group()" />
 END  END
     }          }
    # Additions made by Matthew to make the browser a little easier to deal
    # with in the future.
    #
    # $mode (at this time) indicates if we are in edit mode.
    # $form is the name of the form that the URL is placed when the
    #       selection is made.
    # $element is the name of the element in $formname which receives
    #       the URL.
    #&Apache::lonxml::debug('Checking mode, form, element');
    &setvalues(\%hash,'form.mode'        ,\%env,'form.mode'   );
    &setvalues(\%hash,'form.form'        ,\%env,'form.form'   );
    &setvalues(\%hash,'form.element'     ,\%env,'form.element');
    &setvalues(\%hash,'form.titleelement',\%env,'form.titleelement');
    &setvalues(\%hash,'form.only'        ,\%env,'form.only'   );
    &setvalues(\%hash,'form.omit'        ,\%env,'form.omit'   );
   
           # Deal with 'omit' and 'only' 
           if (exists $env{'form.omit'}) {
               @Omit = split(',',$env{'form.omit'});
           }
           if (exists $env{'form.only'}) {
               @Only = split(',',$env{'form.only'});
           }
           
    my $mode = $env{'form.mode'};
    my ($form,$element,$titleelement);
    if ($mode eq 'edit' || $mode eq 'parmset') {
       $form         = $env{'form.form'};
       $element      = $env{'form.element'};
       $titleelement = $env{'form.titleelement'};
    }
    #&Apache::lonxml::debug("mode=$mode form=$form element=$element titleelement=$titleelement");
   # ------ set catalogmodefunctions to have extra needed javascript functionality
    my $catalogmodefunctions='';
    if ($env{'form.catalogmode'} eq 'interactive' or
       $env{'form.catalogmode'} eq 'import') {
       # The if statement below sets us up to use the old version
       # by default (ie. if $mode is undefined).  This is the easy
       # way out.  Hopefully in the future I'll find a way to get 
       # the calls dealt with in a more comprehensive manner.
   
     my $catalogmodefunctions='';  #
     if ($ENV{'form.catalogmode'} eq 'interactive' or  # There is now also mode "simple", which is for the simple version of the rat
  $ENV{'form.catalogmode'} eq 'groupimport') {  #
  $catalogmodefunctions=<<END;  #
 function select_data(title,url) {      if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
     changeTitle(title);                  my $location = "/adm/groupsort?&inhibitmenu=yes&catalogmode=import&";
                   $location .= "mode=".$mode."&";
                   $location .= "acts=";
    $catalogmodefunctions=<<"END";
   function select_data(url) {
     changeURL(url);      changeURL(url);
     self.close();      self.close();
 }  }
 function save_group() {  function select_group() {
     for (var num=0; num<document.forms.fnum.fnum.value; num++) {      window.location="$location"+document.forms.fileattr.acts.value;
  if (eval("document.forms.form"+num+".filelink.checked")) {  }
     alert(eval("document.forms.form"+num+".title.value")+  function changeURL(val) {
        eval("document.forms.form"+num+".filelink.value"));      if (opener.inf) {
  }          if (opener.inf.document.forms.resinfo.elements.u) {
       opener.inf.document.forms.resinfo.elements.u.value=val;
           }
     }      }
 }  }
   END
               } elsif ($mode eq 'edit') { # we are in 'edit' mode
                   my $location = "/adm/groupsort?catalogmode=interactive&";
                   $location .= "form=$form&element=$element&mode=edit&acts=";
    $catalogmodefunctions=<<END;
   // mode = $mode
   function select_data(url) {
      var location = "/res/?launch=2&form=$form&element=$element&titleelement=$titleelement&acts=" + url;
      window.location=location;
      if (window.opener.document.forms["$form"].elements["$element"].value != url) {
          window.opener.unClean();
      }
   }
 function select_group() {  function select_group() {
     for (var num=0; num<document.forms.fnum.fnum.value; num++) {      window.location="$location"+document.forms.fileattr.acts.value;
  if (eval("document.forms.form"+num+".filelink.checked")) {  }
     alert(eval("document.forms.form"+num+".title.value")+  
        eval("document.forms.form"+num+".filelink.value"));  function changeURL(val) {
  }      if (window.opener.document) {
    window.opener.document.forms["$form"].elements["$element"].value=val;
       } else {
       alert("The file you selected is: "+val);
     }      }
 //    changeTitle(title);  
 //    changeURL(url);  
 }  }
   END
                   if (!$titleelement) {
       $catalogmodefunctions.='function changeTitle(val) {}';
    } else {
       $catalogmodefunctions.=<<END;
 function changeTitle(val) {  function changeTitle(val) {
     if (opener.inf.document.forms.resinfo.elements.t) {      if (window.opener.document) {
         opener.inf.document.forms.resinfo.elements.t.value=val;      window.opener.document.forms["$form"].elements["$titleelement"].value=val;
       } else {
       alert("The title of the file you selected is: "+val);
     }      }
 }  }
   END
                   }
               } elsif ($mode eq 'parmset') {
                   my $location = "/adm/groupsort?catalogmode=interactive&";
                   $location .= "form=$form&element=$element&mode=parmset&acts=";
    $catalogmodefunctions=<<END;
   // mode = $mode
   function select_data(url) {
       changeURL(url);
       self.close();
   }
   
   function select_group() {
       window.location="$location"+document.forms.fileattr.acts.value;
   }
   
 function changeURL(val) {  function changeURL(val) {
     if (opener.inf.document.forms.resinfo.elements.u) {      if (window.opener.document) {
  opener.inf.document.forms.resinfo.elements.u.value=val;          var elementname  = "$element";
    window.opener.document.forms["$form"].elements[elementname].value=val;
       } else {
       alert("The file you selected is: "+val);
     }      }
 }  }
   
   END
               }
           }
           $catalogmodefunctions.=<<END;
   var acts='';
   function rep_dirpath(suffix,val) {
       eval("document.forms.dirpath"+suffix+".acts.value=val");
   }
 END  END
    if ($env{'form.catalogmode'} eq 'import') {
               $catalogmodefunctions.=<<END;
   function queue(val) {
       if (eval("document.forms."+val+".filelink.checked")) {
    var l=val.length;
    var v=val.substring(4,l);
    document.forms.fileattr.acts.value+='1a'+v+'b';
       }
       else {
    var l=val.length;
    var v=val.substring(4,l);
    document.forms.fileattr.acts.value+='0a'+v+'b';
     }      }
   }
   END
    }
   
           my $inhibit_menu = "+'&".&Apache::loncommon::inhibit_menu_check()."'";
 # ---------------------------------------------------------------- Print Header  # ---------------------------------------------------------------- Print Header
     $r->print(<<ENDHEADER);          
 <html>   my $js = <<"ENDHEADER";
 <head>  <script type="text/javascript">
 <title>The LearningOnline Network With CAPA Directory Browser</title>  // <![CDATA[
   $catalogmodefunctions;
 <SCRIPT language="javascript">  function update_only(field) {
 $catalogmodefunctions      alert(field.name);
 function openWindow(url, wdwName, w, h, toolbar,scrollbar) {  }
     var options = "width=" + w + ",height=" + h + ",";  function checkAll() {
       var numForms = document.forms.length;
       for (i=0;i<numForms;i++) {
           var numElements = document.forms[i].elements.length;
           for (j=0;j<numElements;j++){
               var fieldName = document.forms[i].elements[j].name;
               if (fieldName == 'filelink') {
                   document.forms[i].elements[j].checked = true;
                   queue(document.forms[i].name);
               }
           }
       }
   }
   function uncheckAll() {
       var numForms = document.forms.length;
       for (i=0;i<numForms;i++) {
           var numElements = document.forms[i].elements.length;
           for (j=0;j<numElements;j++){
               var fieldName = document.forms[i].elements[j].name;
               if (fieldName == 'filelink') {
                   document.forms[i].elements[j].checked = false;
                   queue(document.forms[i].name);
               }
           }
       }
   }
   
   function openWindow(url, wdwName, w, h, toolbar,scrollbar,locationbar) {
       var xpos = (screen.width-w)/2;
       xpos = (xpos < 0) ? '0' : xpos;
       var ypos = (screen.height-h)/2-30;
       ypos = (ypos < 0) ? '0' : ypos;
       var options = "width=" + w + ",height=" + h + ",screenx="+xpos+",screeny="+ypos+",";
     options += "resizable=yes,scrollbars="+scrollbar+",status=no,";      options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
     options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";      options += "menubar=no,toolbar="+toolbar+",location="+locationbar+",directories=no";
     var newWin = window.open(url, wdwName, options);      var newWin = window.open(url, wdwName, options);
     newWin.focus();      newWin.focus();
 }  }
 </SCRIPT>  
   
 </head>  function gothere(val) {
 <body bgcolor="#FFFFFF">      window.location=val+'?acts='+document.forms.fileattr.acts.value$inhibit_menu;
   }
   // ]]>
   </script>
 ENDHEADER  ENDHEADER
   
     my $line;          my ($headerdom)=($uri=~m{^/res/($match_domain)/});
     my (@attrchk,@openpath);  
     my $uri=$r->uri;  
   
     $r->print("<h2><font color=\"\#888888\">The LearningOnline With CAPA Network Directory Browser</font></h2>\n");  
   
     my $diropen = "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";  
   
     if (tie(%hash,'GDBM_File',$diropen,&GDBM_WRCREAT,0640)) {          if ($env{'form.catalogmode'}) {
               # "Popup mode"
               $r->print(&Apache::loncommon::start_page('Browse published resources',$js,
                                                        {'only_body' => 1, 'add_wishlist'=>1, 'add_modal' =>1, 
                                                         'domain' => $headerdom,}));
           } else {
               # Only display page header and breadcrumbs in non-popup mode
               &Apache::lonhtmlcommon::clear_breadcrumbs();
               &Apache::lonhtmlcommon::add_breadcrumb({
                   'text'  => 'Browse published resources',
                   'href'  => '/res/'.$headerdom.'/?launch=1',
               });
               $r->print(&Apache::loncommon::start_page('Browse published resources',$js,
                                                        {'domain' => $headerdom,})
                        .&Apache::lonhtmlcommon::breadcrumbs()
               );
           }
   
   # ---------------------------------- get state of file types to be showing
    if ($env{'form.only'}) {
       $typeselect = $env{'form.only'};
    } else {
       $typeselect = '';
    }
   
  if ($ENV{'form.attrs'} ne "") {  # ---------------------------------- get state of file attributes to be showing
     for (my $i=0; $i<=5; $i++) {   if ($env{'form.attrs'}) {
       for (my $i=0; $i<=16; $i++) {
  delete $hash{'display_attrs_'.$i};   delete $hash{'display_attrs_'.$i};
  if ($ENV{'form.attr'.$i} == 1) {   if ($env{'form.attr'.$i} == 1) {
     $attrchk[$i] = "checked";      $attrchk[$i] = 'checked';
     $hash{'display_attrs_'.$i} = 1;      $hash{'display_attrs_'.$i} = 1;
  }   }
     }      }
  } else {   } else {
     for (my $i=0; $i<=5; $i++) {      for (my $i=0; $i<=16; $i++) {
  $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1;   $attrchk[$i] = 'checked="checked"' if $hash{'display_attrs_'.$i} == 1;
     }      }
  }   }
     $r->print(<<END);  
 <b><font color="#666666">Display file attributes</font></b><br>  
 <form method="post" name="fileattr" action="$uri" enctype="application/x-www-form-urlencoded">  
 <table border=0><tr>  
 <td><input type=checkbox name=attr0 value="1" $attrchk[0]> Size</td>  
 <td><input type=checkbox name=attr1 value="1" $attrchk[1]> Last access</td>  
 <td><input type=checkbox name=attr2 value="1" $attrchk[2]> Last modified</td>  
 </tr><tr>  
 <td><input type=checkbox name=attr3 value="1" $attrchk[3]> Author</td>  
 <td><input type=checkbox name=attr4 value="1" $attrchk[4]> Keywords</td>  
 <td><input type=checkbox name=attr5 value="1" $attrchk[5]> Language</td>  
 </tr></table>  
 <input type="submit" name="attrs" value="Review">&nbsp;  
 <input type="submit" name="attrs" value="Refresh">  
 $hidden  
 $closebutton  
 $groupimportbutton  
 </form>  
 END  
   
     my $titleclr="#ddffff";          my @file_categories = &Apache::loncommon::filecategories();
     $r->print("<table border=0><tr><td bgcolor=#eeeeee>\n");          my %select_file_categories;
     $r->print("<table border=0><tr>\n");          my @select_form_order = ('');
     $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n");          $select_file_categories{''} = &mt('All file types');
     $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) </b></td>\n") if ($hash{'display_attrs_0'} == 1);          foreach my $cat (@file_categories) {
     $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n") if ($hash{'display_attrs_1'} == 1);              my $types = join(",",&Apache::loncommon::filecategorytypes($cat));
     $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n") if ($hash{'display_attrs_2'} == 1);              $select_file_categories{$types} = &mt($cat);
     $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n") if ($hash{'display_attrs_3'} == 1);              push(@select_form_order,$types);
     $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n") if ($hash{'display_attrs_4'} == 1);          }
     $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n") if ($hash{'display_attrs_5'} == 1);          $select_file_categories{'select_form_order'} = \@select_form_order;
     $r->print("</tr>");          my $onchange = 'this.form.submit();';
           my $type_element=
               &Apache::loncommon::select_form(
                   $typeselect,
                   'only',
                   \%select_file_categories,$onchange);
           my $type_selector = '<label>'.&mt('File Type Displayed: [_1]',
                                             $type_element).'</label>';
   
   # ------------------------------- output state of file attributes to be showing
   #                                 All versions has to the last item
   #                                 since it does not take an extra col
    my %lt=&Apache::lonlocal::texthash(
      'av' => 'All versions',
      'ud' => 'Update Display',
      'pr' => 'Problems',
      'gr' => 'Graphics',
      'at' => 'All types',
      'hd' => 'Display Options'
      );
           my @disp_order = ('0','4','5','6','13','1','2','3','10','14','8','11','7','12','15','16');
           my %disp_options = &Apache::lonlocal::texthash (
                                 0  => 'Title',
                                 4  => 'Author',
                                 5  => 'Keywords',
                                 6  => 'Language',
                                 13 => 'Notes',
                                 1  => 'Size',
                                 2  => 'Last access',
                                 3  => 'Last modified',
                                 10 => 'Source Available',
                                 14 => 'Abstract',
                                 8  => 'Statistics',
                                 11 => 'Linked/Related Resources',
                                 7  => 'Show resource',
                                 12 => 'Subject',
                                 15 => 'Grade Level',
                                 16 => 'Standards',
                              );
           my $cell = 0;
           my $numinrow = 4;
    $r->print('
   <form method="post" name="fileattr" action="'.$uri.'" enctype="application/x-www-form-urlencoded">
   <fieldset>
   <legend>'.$lt{'hd'}.'</legend>
   <table style=" border-collapse: collapse; border-style: none;">'."\n");
           foreach my $item (@disp_order) {
               my $style = 'padding-left: 12px; padding-right: 8px;';
               if ($cell%$numinrow == 0) {
                   $r->print('<tr>');
               }
               $cell ++;
               if ($cell > 3 * $numinrow) {
                   $style .= ' padding-bottom: 6px;'; 
               }
               if (defined($disp_options{$item})) {
                   $r->print('<td style="'.$style.'"><span class="LC_nobreak">'.
                             '<label><input type="checkbox" name="attr'.$item.'" value="1" '.
                             $attrchk[$item].' onclick="this.form.submit();" /> '.$disp_options{$item}.
                             '</label></span></td>'."\n");
               }
               if ($cell > 1 && $cell%$numinrow == 0) {
                   $r->print('</tr>');
               }
           }
           $r->print(<<END);
   <tr>
   <td style="font-style: italic; border-top: 1px solid black; padding-top: 6px"> 
   <label><input type="checkbox" name="attr9" value="1" $attrchk[9] onclick="this.form.submit();" /> $lt{'av'}</label>
   </td>
   <td colspan="3" style="padding-left:8px; padding-top: 4px; font-style: italic; border-top: 1px solid black; padding-top: 8px">$type_selector</td>
   </tr>
   </table>
   <input type="hidden" name="attrs" value="1" />
   </fieldset>
   <input type="submit" name="updatedisplay" value="$lt{'ud'}" />
   <input type="hidden" name="acts" value="" />
   $closebutton $groupimportbutton
   END
           $r->print(&Apache::loncommon::inhibit_menu_check('input'));
      
   # -------------- Filter out sequence containment in crumbs and "recent folders"
    my $storeuri=$uri;
    $storeuri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
    $storeuri=~s/\/+/\//g;
   # ---------------------------------------------------------------- Bread crumbs
           $r->print(
               '<p>'
              .&Apache::lonhtmlcommon::crumbs(
                   $storeuri,
                   '',
                   '',
                   (($env{'form.catalogmode'} eq 'import')?
                                    'document.forms.fileattr':''))
              .'<br />'
              .&Apache::lonhtmlcommon::select_recent(
                   'residx',
                   'resrecent',
                   'window.status=this.form.resrecent.options[this.form.resrecent.selectedIndex].value;this.form.action=this.form.resrecent.options[this.form.resrecent.selectedIndex].value;this.form.submit();')
              .'</p>'
           );
   # -------------------------------------------------------- Resource Home Button
    my $reshome=$env{'course.'.$env{'request.course.id'}.'.reshome'};
    if ($reshome) {
       $r->print("<span class=\"LC_fontsize_large\"><a href='");
       if ($env{'form.catalogmode'} eq 'import') {
    $r->print('javascript:document.forms.fileattr.action="'.&Apache::loncommon::inhibit_menu_check($reshome).'";document.forms.fileattr.submit();');
       } else {
    $r->print($reshome);
       }
       $r->print("'>".&mt('Home').'</a></span>');
    }
    $r->print('</form>');
   # ------------------------------------------------------ Remember where we were
    &Apache::loncommon::storeresurl($storeuri);
    &Apache::lonhtmlcommon::store_recent('residx',$storeuri,$storeuri);
   # -------------------------------------------------- Check All and Uncheck all
    if ($env{'form.catalogmode'} eq 'import') {
       $r->print('<p><input type="button" value="'.&mt("Check All").'" id="checkallbutton" onclick="javascript:checkAll()" />');
       $r->print('<input type="button" value="'.&mt("Uncheck All").'" id="uncheckallbutton" onclick="javascript:uncheckAll()" /></p>');
    }
   # ----------------- output starting row to the indexed file/directory hierarchy
           #$r->print(&initdebug());
           #$r->print(&writedebug("Omit:@Omit")) if (@Omit);
           #$r->print(&writedebug("Only:@Only")) if (@Only);
           $r->print(&Apache::loncommon::start_data_table("LC_tableBrowseRes")
                    .&Apache::loncommon::start_data_table_header_row());
    $r->print("<th $colspan>".&mt('Name')."</th>\n");
    $r->print("<th></th>\n");
    $r->print("<th>".&mt('Title')."</th>\n") 
       if ($hash{'display_attrs_0'} == 1);
    $r->print('<th class="LC_right">'.&mt("Size")." (".&mt("bytes").") ".
     "</th>\n") if ($hash{'display_attrs_1'} == 1);
    $r->print("<th>".&mt("Last accessed")."</th>\n") 
       if ($hash{'display_attrs_2'} == 1);
    $r->print("<th>".&mt("Last modified")."</th>\n")
       if ($hash{'display_attrs_3'} == 1);
    $r->print("<th>".&mt("Author(s)")."</th>\n")
       if ($hash{'display_attrs_4'} == 1);
    $r->print("<th>".&mt("Keywords")."</th>\n")
       if ($hash{'display_attrs_5'} == 1);
    $r->print("<th>".&mt("Language")."</th>\n")
       if ($hash{'display_attrs_6'} == 1);
    $r->print("<th>".&mt("Usage Statistics")." <br />(".
     &mt("Courses/Network Hits").") ".&mt('updated periodically')."</th>\n")
       if ($hash{'display_attrs_8'} == 1);
    $r->print("<th>".&mt("Source Available")."</th>\n")
       if ($hash{'display_attrs_10'} == 1);
    $r->print("<th>".&mt("Linked/Related Resources")."</th>\n")
       if ($hash{'display_attrs_11'} == 1);
    $r->print("<th>".&mt("Resource")."</th>\n")
       if ($hash{'display_attrs_7'} == 1);
    $r->print("<th>".&mt("Subject")."</th>\n")
       if ($hash{'display_attrs_12'} == 1);
    $r->print("<th>".&mt("Notes")."</th>\n")
       if ($hash{'display_attrs_13'} == 1);
    $r->print("<th>".&mt("Abstract")."</th>\n")
       if ($hash{'display_attrs_14'} == 1);
    $r->print("<th>".&mt("Grade Level")."</th>\n")
       if ($hash{'display_attrs_15'} == 1);
    $r->print("<th>".&mt("Standards")."</th>\n")
       if ($hash{'display_attrs_16'} == 1);
       
       $r->print(&Apache::loncommon::end_data_table_header_row());
       
      
   
  map {  # ----------------- read in what directories have previously been set to "open"
    foreach (keys %hash) {
     if ($_ =~ /^diropen_status_/) {      if ($_ =~ /^diropen_status_/) {
  my $key = $_;   my $key = $_;
  $key =~ s/^diropen_status_//;   $key =~ s/^diropen_status_//;
  $dirs{$key} = $hash{$_};   $dirs{$key} = $hash{$_};
     }      }
  } keys %hash;   }
   
  if ($ENV{'form.openuri'}) {  # take care of review and refresh options   if ($env{'form.openuri'}) {  # take care of review and refresh options
     my $uri=$ENV{'form.openuri'};      my $uri=$env{'form.openuri'};
     if (exists($hash{'diropen_status_'.$uri})) {      if (exists($hash{'diropen_status_'.$uri})) {
  my $cursta = $hash{'diropen_status_'.$uri};   my $cursta = $hash{'diropen_status_'.$uri};
  $dirs{$uri} = 'open';   $dirs{$uri} = 'open';
Line 229  END Line 646  END
  $dirs{$uri} = 'open';   $dirs{$uri} = 'open';
     }      }
  }   }
   
  my $toplevel = "/res/";   my $toplevel;
  my $indent = 0;   my $indent = 0;
  &scanDir ($r,$toplevel,$indent);   $uri = $uri.'/' if $uri !~ /.*\/$/;
   
  $r->print("<form name='fnum'>");    if ($env{'form.dirPointer'} ne 'on') {
  $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");       $hash{'top.level'} = $uri;
  $r->print("</table>");       $toplevel = $uri;
  $r->print("</td></tr></table>");    } else {
  $r->print("</body></html>\n");       $toplevel = $hash{'top.level'};
  untie(%hash);    }
     } else {  
  $r->print("Unable to tie hash to db file");  # -------------------------------- if not at top level, provide an uplink arrow
    if ($toplevel ne '/res/'){
       my (@uri_com) = split(/\//,$uri);
       pop @uri_com;
       my $upone = join('/',@uri_com);
       my @list = qw (0);
       &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
       $indent = 1;
    }
   
   # -------- recursively go through all the directories and output as appropriate
    &scanDir ($r,$toplevel,$indent,\%hash);
   
   # -------------------------------------------------------------- end the tables
           $r->print(&Apache::loncommon::end_data_table());
   
   # ---------------------------- embed hidden information useful for group import
    $r->print("<form name='fnum' action=''>");
    $r->print("<input type='hidden' name='fnum' value='$fnum' /></form>");
   
   # --------------------------------------------------- end the output and return
    $r->print(&Apache::loncommon::end_page()."\n");
     }      }
       if(! $c->aborted()) {
   # write back into the temporary file
    my %dbfile;
           if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_NEWDB(),0640)) {
               while (my($key,$value) = each(%hash)) {
                   $dbfile{$key}=$value;
               }
               untie(%dbfile);
           }
       }
   
     return OK;      return OK;
 }  }
   
   # ----------------------------------------------- recursive scan of a directory
 # --------------------recursive scan of a directory  
 sub scanDir {  sub scanDir {
     my ($r,$startdir,$indent)=@_;      my ($r,$startdir,$indent,$hashref)=@_;
       my $c = $r->connection();
     my ($compuri,$curdir);      my ($compuri,$curdir);
     my $dirptr=16384;      my $dirptr=16384;
       my $obs;
     $indent++;      $indent++;
   
     my %dupdirs = %dirs;      my %dupdirs = %dirs;
     my @list=&get_list($r,$startdir);      my @list=&get_list($r,$startdir);
     foreach my $line (@list) {      foreach my $line (@list) {
  my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5);           return if ($c->aborted());
  next if $strip =~ /.*\.meta$/;   #This is a kludge, sorry aboot this
  if ($dom eq "domain") {   my ($strip,$dom,undef,$testdir,undef,undef,undef,undef,undef,undef,undef,undef,undef,undef,$obs,undef)=split(/\&/,$line,16); 
     $compuri = join('',$strip,"/");  # domain list has /res/<domain name>   next if($strip =~ /.*\.meta$/ | $obs eq '1');
     $curdir = $compuri;   my (@fileparts) = split(/\./,$strip);
    if ($hash{'display_attrs_9'} != 1) {
               # if not all versions to be shown
       if (scalar(@fileparts) >= 3) {
    my $fext = pop @fileparts;
    my $ov = pop @fileparts;
    my $fname = join ('.',@fileparts,$fext);
    next if (grep /\Q$fname\E/,@list and $ov =~ /^\d+$/);
       }
    }
   
    if ($dom eq 'domain') {
       # dom list has full path /res/<domain name>/ already
       $curdir='';
       $compuri = (split(/\&/,$line))[0];
  } else {   } else {
     $compuri = join('',$startdir,$strip,"/"); # user, dir & file having name only, i.e., w/o path      # user, dir & file have name only, i.e., w/o path
       $compuri = join('',$startdir,$strip,'/');
     $curdir = $startdir;      $curdir = $startdir;
  }   }
  my $diropen = 0;   my $diropen = 'closed';
  if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {   if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/) or ($compuri=~/\.(sequence|page)\/$/)) {
     while (my ($key,$val)= each %dupdirs) {      while (my ($key,$val)= each %dupdirs) {
  if ($key eq $compuri and $val eq "open") {   if ($key eq $compuri and $val eq "open") {
     $diropen = 1;      $diropen = "opened";
     delete $dupdirs{key},$dirs{$key};      delete($dupdirs{$key});
       delete($dirs{$key});
  }   }
     }      }
  }   }
  &display_line($r,$diropen,$line,$indent,$curdir,@list);   &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
  &scanDir ($r,$compuri,$indent) if $diropen == 1;   &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
     }      }
     $indent--;      $indent--;
 }  }
   
 # ----------------- get complete matched list based on the uri ------  # --------------- get complete matched list based on the uri (returns an array)
 sub get_list {  sub get_list {
     my ($r,$uri)=@_;      my ($r,$uri)=@_;
     my @list;      my @list=();
     my $luri = $uri;      my $listerror;
     $luri =~ s/\//_/g;      
       (my $luri = $uri) =~ s/\//_/g;
     if ($ENV{'form.attrs'} eq "Refresh") {      if ($env{'form.updatedisplay'}) {
  map {   foreach (keys %hash) {
     delete $hash{$_} if ($_ =~ /^dirlist_files_/);      delete $hash{$_} if ($_ =~ /^dirlist_files_/);
     } keys %hash;      delete $hash{$_} if ($_ =~ /^dirlist_timestamp_files_/);
    }
     }      }
   
     if ($hash{'dirlist_files'.$luri}) {      if (defined($hash{'dirlist_files_'.$luri}) &&
    $hash{'dirlist_timestamp_files_'.$luri}+600 > (time)) {
  @list = split(/\n/,$hash{'dirlist_files_'.$luri});   @list = split(/\n/,$hash{'dirlist_files_'.$luri});
       } elsif ($uri=~/\.(page|sequence)\/$/) {
   # is a page or a sequence
    $uri=~s/\/$//;
    $uri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
    $uri=~s/\/+/\//g;
    foreach (&Apache::lonsequence::attemptread(&Apache::lonnet::filelocation('',$uri))) {
       my @ratpart=split(/\:/,$_);
       push(@list,&LONCAPA::map::qtescape($ratpart[1]));
    } 
    $hash{'dirlist_files_'.$luri} = join("\n",@list);
     } else {      } else {
  @list = &Apache::lonnet::dirlist($uri);  # is really a directory
  $hash{'dirlist_files_'.$luri} = join('\n',@list);   (my $listref,$listerror) = &Apache::lonnet::dirlist($uri);
           if (ref($listref) eq 'ARRAY') {
               @list = @{$listref};
           }
    $hash{'dirlist_files_'.$luri} = join("\n",@list);
    $hash{'dirlist_timestamp_files_'.$luri} = time;
       }
   #Checking for error messages associated with empty directories or inaccessible servers (See Bug 4984)
       if (($listerror eq 'no_such_dir') || ($listerror eq 'no_such_host') || ($listerror eq 'no_host')) { 
           $r->print("<p class='LC_info'>" . &mt("Directory does not exist."). "</p>");
       } elsif ($listerror eq 'con_lost') {
           $r->print("<p class='LC_info'>" . &mt("Directory temporarily not accessible."). "</p>");
       }
   
       return @list=&match_ext($r,@list);    
   }
   
   sub dynmetaread {
       my $uri=shift;
       if (($hash{'display_attrs_8'}==1) || ($hash{'display_attrs_11'}==1)) {
   # We don't want the filename
    $uri=~s/\/[^\/]+$//;
   # Did we already see this?
    my $builddir=$uri;
    while ($builddir) {
       if ($dynread{$builddir}) {
    return 0;
       }
       $builddir=~s/\/[^\/]+$//;
    }
   # Actually get the data
    %dynhash=
       (%dynhash,&Apache::lonmeta::get_dynamic_metadata_from_sql($uri.'/'));
   # Remember that we got it
    $dynread{$uri}=1;
       } 
   }
   
   sub initdebug {
       my $start_page=
    &Apache::loncommon::start_page('Debug',undef,
          {'only_body' => 1,});
       $start_page =~ s/\n/ /g;
       return <<ENDJS;
   <script type="text/javascript">
   var debugging = true;
   if (debugging) {
       var debuggingWindow = window.open('','Debug','width=400,height=300',true);
   } 
   
   function output(text) {
       if (debugging) {
           debuggingWindow.document.writeln(text);
     }      }
     return @list=&match_ext($r,@list);  }
   output('$start_page<pre>');   
   </script>
   ENDJS
   }
   
   sub writedebug {
       my ($text) = @_;
       return "<script type=\"text/javascript\">output('$text');</script>";
 }  }
   
 #-------------------------- filters out files based on extensions  # -------------------- filters out files based on extensions (returns an array)
 sub match_ext {  sub match_ext {
     my ($r,@packlist)=@_;      my ($r,@packlist)=@_;
     my @trimlist;      my @trimlist;
Line 311  sub match_ext { Line 848  sub match_ext {
     my @fileext;      my @fileext;
     my $dirptr=16384;      my $dirptr=16384;
   
     my $tabdir  = $r->dir_config('lonTabDir');  
     my $fn = $tabdir."/filetypes.tab";  
     if (-e $fn) {  
  my $FH=Apache::File->new($fn);  
  my @content=<$FH>;  
  foreach my $line (@content) {  
     (my $ext,my $foo) = split /\s+/,$line;  
     push @fileext,$ext;  
  }  
     }  
     foreach my $line (@packlist) {      foreach my $line (@packlist) {
  chomp $line;   chomp $line;
  $line =~ s/^\/home\/httpd\/html//;   $line =~ s/^\/home\/httpd\/html//;
  my @unpackline = split (/\&/,$line);   my @unpackline = split (/\&/,$line);
  next if ($unpackline[0] eq ".");   next if ($unpackline[0] eq '.');
  next if ($unpackline[0] eq "..");   next if ($unpackline[0] eq '..');
  my @filecom = split (/\./,$unpackline[0]);   my @filecom = split (/\./,$unpackline[0]);
  my $fext = pop(@filecom);   my $fext = pop(@filecom);
  my $fnptr = $unpackline[3]&$dirptr;   my $fnptr = ($unpackline[3]&$dirptr) || ($fext=~/\.(page|sequence)$/);
   if ($fnptr == 0 and $unpackline[3] ne "") {    if ($fnptr == 0 and $unpackline[3] ne "") {
     foreach my $nextline (@fileext) {      my $embstyle = &Apache::loncommon::fileembstyle($fext);
  push @trimlist,$line if $nextline eq $fext;              push @trimlist,$line if (defined($embstyle) && 
     }       ($embstyle ne 'hdn' or $fext eq 'meta'));
  } else {   } else {
     push @trimlist,$line;      push @trimlist,$line;
  }   }
     }      }
     @trimlist = sort (@trimlist);      @trimlist = sort {uc($a) cmp uc($b)} (@trimlist);
     return @trimlist;      return @trimlist;
 }  }
   
 #------------------- displays one line in appropriate table format  # ------------------------------- displays one line in appropriate table format
 sub display_line{  sub display_line {
     my ($r,$diropen,$line,$indent,$startdir,@list)=@_;      my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
     my (@pathfn, $fndir, $fnptr);      my (@pathfn, $fndir);
   # there could be relative paths (files actually belonging into this directory)
   # or absolute paths (for example, from sequences)
       my $absolute;
       my $pathprefix;
       if ($line=~m|^/res/| && $startdir ne '') {
    $absolute=1;
    $pathprefix='';
       } else {
    $absolute=0;
    $pathprefix=$startdir;
       }
     my $dirptr=16384;      my $dirptr=16384;
     my $fileclr="#ffffe6";  #SB my $fileclr="#ffffe6";
     my $iconpath="/res/adm/pages/indexericons/";      my $iconpath= $r->dir_config('lonIconsURL') . '/';
   
     my @filecom = split (/\&/,$line);      my @filecom = split (/\&/,$line);
     my @pathcom = split (/\//,$filecom[0]);      my @pathcom = split (/\//,$filecom[0]);
     my $listname = $pathcom[scalar(@pathcom)-1];      my $listname = $pathcom[scalar(@pathcom)-1];
     my $fnptr = $filecom[3]&$dirptr;      my $fnptr = $filecom[3]&$dirptr;
     my $msg = 'View '.$filecom[0].' resources';      my $msg = &mt('View').' '.$filecom[0].' '.&mt('resources');
     $msg = 'Close '.$filecom[0].' directory' if $diropen == 1;      $msg = &mt('Close').' '.$filecom[0].' '.&mt('directory') if $diropen eq 'opened';
       my $nowOpen = ($diropen eq 'opened' ? 1 : 0);
   
     my $tabtag="</td>";      my $tabtag='</td>';
     my $i=0;      my $i=0;
       while ($i<=16) {
     while ($i<=5) {   $tabtag=join('',$tabtag,"<td>&nbsp;</td>")
 # my $key="form.attr".$i;      if ($i != 9 &&
 # $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,">&nbsp;</td>") if $ENV{$key} == 1;   $hash{'display_attrs_'.$i} == 1);
  $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,">&nbsp;</td>") if $hash{'display_attrs_'.$i} == 1;  
  $i++;   $i++;
     }      }
     if ($filecom[1] eq "domain") {      my $valign = ($hash{'display_attrs_7'} == 1 ? 'top' : 'bottom');
  $r->print("<tr>$extrafield");  
  $r->print("<td bgcolor=$fileclr valign=bottom>");  # display uplink arrow
  &begin_form ($r,$filecom[0].'/');      if ($filecom[1] eq 'viewOneUp') {
  my $anchor = $filecom[0].'/';   my $updir=$startdir;
  $anchor =~ s/\///g;  # -------------- Filter out sequence containment in crumbs and "recent folders"
  $r->print ("<a name=\"".$anchor."\">\n<input src=\"".$iconpath."comp.blue.gif\"");   $updir='/'.(split(/\.(page|sequence)\/\//,$startdir))[-1];
  $r->print (" name=\"$msg\" height=\"22\" type=\"image\" border=\"0\">\n");   $updir=~s/\/+/\//g;
  $r->print("Domain - $listname $tabtag</tr></form>\n");  
   #SB $r->print("<tr valign='$valign' bgcolor=\"$fileclr\">$extrafield");
           $r->print(&Apache::loncommon::start_data_table_row()); # valign="$valign" ?!?
           $r->print($extrafield);
    $r->print("<td>\n");
    $r->print ('<form method="post" name="dirpathUP" action="'.$updir.
      '/" '.
      'onsubmit="return rep_dirpath(\'UP\','.
      'document.forms.fileattr.acts.value)" '.
      'enctype="application/x-www-form-urlencoded"'.
                      '>'."\n");
    $r->print(&Apache::loncommon::inhibit_menu_check('input'));
    $r->print ('<input type="hidden" name="openuri" value="'.
      $startdir.'" />'."\n");
           $r->print ('<input type="hidden" name="acts" value="" />'."\n");
    $r->print ('<a href="#" onclick="document.dirpathUP.submit()"><img src="'.$iconpath.'arrow.up.gif"');
    $r->print (' alt="'.$msg.'" class="LC_fileicon" />'.
      "\n");
    $r->print(&mt("Up")."</a></form></td><td>$tabtag");
           $r->print(&Apache::loncommon::end_data_table_row());
    return OK;
       }
   # Do we have permission to look at this?
       if($filecom[15] ne '1') { return OK if ((!&Apache::lonnet::allowed('bre',$pathprefix.$filecom[0])) && (!&Apache::lonnet::allowed('bro',$pathprefix.$filecom[0]))); }
   
   # make absolute links appear on different background
   #SB    if ($absolute) { $fileclr='#ccdd99'; }
   
   # display domain
       if ($filecom[1] eq 'domain') {
     $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n")
        if ($env{'form.dirPointer'} eq "on");
   #SB $r->print("<tr valign='$valign' bgcolor=\"$fileclr\">$extrafield");
    $r->print(&Apache::loncommon::start_data_table_row()); # valign="$valign" ?!?"
           $r->print($extrafield);
    $r->print("<td>");
    &begin_form ($r,$filecom[0]);
    my $anchor = $filecom[0];
    $anchor =~ s/\W//g;
    $r->print ('<a name="'.$anchor.'"></a>');
   $r->print ('<input type="hidden" name="acts" value="" />');
    $r->print ('<a href="#" onclick="document.dirpath'.($dnum-1).'.submit()"><img src="'.$iconpath.'arrow.'.($nowOpen ? "open" : "closed" ).'.gif"'); 
    $r->print (' alt="'.$msg.'" class="LC_fileicon" /></a>'.
      "\n");
    my $quotable_filecom = &Apache::loncommon::escape_single($filecom[0]);
    $r->print ('<a href="javascript:gothere(\''.$quotable_filecom.
      '\')"><img alt="" src="'.$iconpath.'server.gif"');
    $r->print (' class="LC_fileicon" />'."\n");
    $r->print (&mt("Domain")." - $listname </a>");
    if (&Apache::lonnet::domain($listname,'description')) {
       $r->print("<br />(".&Apache::lonnet::domain($listname,'description').
         ")");
    }
    $r->print("</form></td><td>$tabtag");
            $r->print(&Apache::loncommon::end_data_table_row());
  return OK;   return OK;
   
   # display user directory
     }      }
     if ($filecom[1] eq "user") {      if ($filecom[1] eq 'user') {
  $r->print("<tr>$extrafield");   # $r->print("<tr valign=$valign bgcolor=\"$fileclr\">$extrafield");
  $r->print("<td bgcolor=$fileclr valign=bottom>\n");  
  my $curdir = $startdir.$filecom[0].'/';   my $curdir = $startdir.$filecom[0].'/';
  &begin_form ($r,$curdir);  
  my $anchor = $curdir;   my $anchor = $curdir;
  $anchor =~ s/\///g;   $anchor =~ s/\W//g;
 # $r->print ("<a name=\"$anchor\">\n<img src=",$iconpath,"white_space_20_22.gif border=0>\n");  #SB $r->print("<tr bgcolor=\"$fileclr\">$extrafield<td valign=$valign>");
  $r->print ("<a name=\"$anchor\">\n<img src=",$iconpath,"whitespace1.gif border=0>\n");          $r->print(&Apache::loncommon::start_data_table_row()
  $r->print ("<input src=\"$iconpath");                   .$extrafield.'<td class="LC_'.$valign.'">');
  $r->print ("folder_pointer_closed.gif\"") if $diropen == 0;   &begin_form ($r,$curdir);
  $r->print ("folder_pointer_opened.gif\"") if $diropen == 1;   $r->print ('<a name="'.$anchor.'"></a><img alt="" src="'.$iconpath.
  $r->print (" name=\"$msg\" height=\"22\" type=\"image\" border=\"0\">\n");     'whitespace_21.gif" class="LC_icon" />'."\n");
  $r->print ("<img src=",$iconpath,"quill.gif border=0>\n");   $r->print ('<input type="hidden" name="acts" value="" />');
  $r->print ("$listname $tabtag</tr></form>\n");   $r->print ('<a href="#" onclick="document.dirpath'.($dnum-1).'.submit()">');
  return OK;          $r->print ('<img src="'.$iconpath.'arrow.'.($nowOpen ? "open" : "closed" ).
      '.gif" class="LC_fileicon"'); 
    $r->print (' alt="'.$msg.'"/></a>'.
      "\n");
    my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
    $r->print ('<a href="javascript:gothere(\''.$quotable_curdir
      .'\')"><img alt="'.$msg.'" src="'.
      $iconpath.'quill.gif" class="LC_fileicon" />');
    my $domain=(split(m|/|,$startdir))[2];
    my $plainname=&Apache::loncommon::plainname($listname,$domain);
           $r->print ($listname.'</a>');
   
           if (defined($plainname) && $plainname) { $r->print(" ($plainname) "); }
   # Wishlistlink
           $r->print('</form></td><td><a href="javascript:;" '.
                     'title="'.&mt('Save a link for this folder in your personal Stored Links repository').'" '.
                     'onclick="set_wishlistlink('."'$plainname','$startdir$listname"."/'".')">'.
                     '<img class="LC_icon" src="/res/adm/pages/wishlist.png" '.
                     'alt="'.&mt('save in Stored Links').'" style="width:22px;"/></a>'.$tabtag);
           $r->print(&Apache::loncommon::end_data_table_row());
           return OK;
     }      }
   
 # display file  # display file
     if ($fnptr == 0 and $filecom[3] ne "") {          if (($fnptr == 0 and $filecom[3] ne '') or $absolute) {
  my @file_ext = split (/\./,$listname);              my $title;
  my $curfext = $file_ext[scalar(@file_ext)-1];              my $filelink = $pathprefix.$filecom[0];
  my $filelink = $startdir.$filecom[0];              if ($hash{'display_attrs_0'} == 1) {
  $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>");                  $title = &Apache::lonnet::gettitle($filelink);
  my $metafile = grep /^$filecom[0]\.meta\&/, @list;              }
  my $title;              my @file_ext = split (/\./,$listname);
         if ($ENV{'form.catalogmode'} eq 'interactive') {              my $curfext = $file_ext[-1];
     $title=$listname;              if (@Omit) {
     $title = &Apache::lonnet::metadata($filelink,'title')                  foreach (@Omit) { return OK if (lc($curfext) eq $_); }
  if ($metafile == 1);              }
     $title=$listname unless $title;              if (@Only) {
     $r->print("<a href='javascript:select_data(\"",                  my $skip = 1;
               $title,'","',$filelink,"\")'>");                  foreach (@Only) { $skip = 0 if (lc($curfext) eq $_); }
     $r->print("<img src='",$iconpath,"select.gif' border=0></a>\n");                  return OK if ($skip > 0);
     $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");              }
  }              # Set the icon for the file
         elsif ($ENV{'form.catalogmode'} eq 'groupimport') {              my $iconname = &Apache::loncommon::icon($listname);
     $title=$listname;  #SB $r->print("<tr valign='$valign' bgcolor=\"$fileclr\">);
     $title = &Apache::lonnet::metadata($filelink,'title')          $r->print(&Apache::loncommon::start_data_table_row()); #SB valign="$valign" ?!?
  if ($metafile == 1);          $r->print('<td class="LC_middle LC_nobreak">');
     $title=$listname unless $title;  
     $r->print("<form name='form$fnum'>\n");          if ($env{'form.catalogmode'} eq 'interactive') {
       my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
               $r->print("<a href=\"javascript:select_data(\'",
                         $quotable_filelink,"')\">");
       $r->print("<img alt=\"\" src='",$iconpath,"select.gif' class='LC_icon' /></a>".
         "\n");
       $r->print('</td><td class="LC_middle">');
    } elsif ($env{'form.catalogmode'} eq 'import') {
       $r->print("<form name='form$fnum' action=''>\n");
     $r->print("<input type='checkbox' name='filelink"."' ".      $r->print("<input type='checkbox' name='filelink"."' ".
       "value='$filelink'>\n");        "value='$filelink' onclick='".
     $r->print("<input type='hidden' name='title"."' ".        "javascript:queue(\"form$fnum\")' ");
       "value='$title'>\n");      if ($hash{'store_'.$filelink}) {
     $r->print("</form>\n");   $r->print("checked");
     $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");      }
       $r->print(" />\n");
       $r->print('</form></td><td class="LC_middle">');
       $hash{"pre_${fnum}_link"}=$filelink;
       $hash{"pre_${fnum}_title"}=$title;
       if (!$hash{"pre_${fnum}_title"}) {
           $hash{"pre_${fnum}_title"} = 'Not_retrieved';
       }
      $fnum++;       $fnum++;
  }   }
   # Form to open or close sequences
  if ($indent < 11) {   if ($filelink=~/\.(page|sequence)$/) {
     $r->print("<img src=",$iconpath,"whitespace",$indent,".gif border=0>\n");      my $curdir = $startdir.$filecom[0].'/';
  } else {      &begin_form($r,$curdir);
     my $ten = int($indent/10.);      $indent--;
     my $rem = $indent%10.0;   }
   # General indentation
     my $count = 0;      my $count = 0;
     while ($count < $ten) {      while ($count < $indent) {
  $r->print("<img src=",$iconpath,"whitespace10.gif border=0>\n");              $r->print('<img alt="" src="'.$iconpath.'whitespace_21.gif" 
     $count++;                  class="LC_icon" />');
           $count++;
     }      }
     $r->print("<img src=",$iconpath,"whitespace",$rem,".gif border=0>\n") if $rem > 0;  # Sequence open/close icon
    if ($filelink=~/\.(page|sequence)$/) {
       my $curdir = $startdir.$filecom[0].'/';
       my $anchor = $curdir;
       $anchor =~ s/\W//g;
       $r->print ('<input type="hidden" name="acts" value="" />');
       $r->print ('<a name="'.$anchor.'"></a>');
               $r->print ('<a href="#" onclick="document.dirpath'.($dnum-1).'.submit()">');
               $r->print ('<img src="'.$iconpath.'arrow.'.($nowOpen ? "open" : "closed" ).
                          '.gif" class="LC_fileicon"');
       $r->print (' alt="'.$msg.'" /></a>'.
          "\n");
    }
   # Filetype icons
    $r->print("<img alt=\"\" src='$iconname' class='LC_fileicon' />\n");
    my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
   
    $r->print (" <a href=\"javascript:openMyModal('".$quotable_filelink."?inhibitmenu=yes',500,500,'yes');\">$listname</a> ");
    $quotable_filelink = &Apache::loncommon::escape_single($filelink.'.meta');
    &Apache::loncommon::inhibit_menu_check(\$quotable_filelink);
    $r->print (" (<a href=\"javascript:openMyModal('".$quotable_filelink."?inhibitmenu=yes',500,500,'yes');\">".&mt('metadata')."</a>) ");
   # Close form to open/close sequence
    if ($filelink=~/\.(page|sequence)$/) {
       $r->print('</form>');
  }   }
   
  $r->print("<img src=$iconpath$curfext.gif border=0>\n");  
  $r->print(" <a href=$filelink target='_blank'>",$listname,"</a>\n");  
   
  $r->print (" (<a href=\"javascript:openWindow('".$filelink.".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; TARGET=_self>metadata</a>) ") if ($metafile == 1);  
   
  $r->print("</td>\n");   $r->print("</td>\n");
 # $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",$filecom[8]," </td>\n") if $ENV{'form.attr0'} == 1;  # Wishlistlink
  $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",$filecom[8]," </td>\n") if $hash{'display_attrs_0'} == 1;          $r->print('<td><a href="javascript:;" title="'.&mt('Save a link for this resource in your personal Stored Links repository').'" '.
  $r->print("<td bgcolor=$fileclr valign=bottom> ".(localtime($filecom[9]))." </td>\n") if $hash{'display_attrs_1'} == 1;                    'onclick="set_wishlistlink('."'".&Apache::lonnet::gettitle($filelink).
  $r->print("<td bgcolor=$fileclr valign=bottom> ".(localtime($filecom[10]))." </td>\n") if $hash{'display_attrs_2'} == 1;                    "','$startdir$listname'".')">'.
                     '<img class="LC_icon" src="/res/adm/pages/wishlist.png" '.
  if ($hash{'display_attrs_3'} == 1) {                    'alt="'.&mt('save in Stored Links').'" style="width:22px;"/></a></td>');
     my $author = &Apache::lonnet::metadata($filelink,'author') if ($metafile == 1);   if ($hash{'display_attrs_0'} == 1) {
     $author = '&nbsp;' if (!$author);      $r->print('<td> '.($title eq '' ? '&nbsp;' : $title).
     $r->print("<td bgcolor=$fileclr valign=bottom> ".$author." </td>\n");        ' </td>'."\n");
  }   }
    $r->print('<td class="LC_right"> ',
     $filecom[8]," </td>\n") 
       if $hash{'display_attrs_1'} == 1;
    $r->print('<td class="LC_nobreak"> '.
                     (&Apache::lonlocal::locallocaltime($filecom[9]))." </td>\n")
       if $hash{'display_attrs_2'} == 1;
    $r->print('<td class="LC_nobreak"> '.
                     (&Apache::lonlocal::locallocaltime($filecom[10]))." </td>\n")
       if $hash{'display_attrs_3'} == 1;
   
  if ($hash{'display_attrs_4'} == 1) {   if ($hash{'display_attrs_4'} == 1) {
     my $keywords = &Apache::lonnet::metadata($filelink,'keywords') if ($metafile == 1);      my $author = &Apache::lonnet::metadata($filelink,'author');
     $keywords = '&nbsp;' if (!$keywords);      $r->print('<td class="LC_nobreak"> '.($author eq '' ? '&nbsp;' : $author).
     $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords." </td>\n");        " </td>\n");
  }   }
  if ($hash{'display_attrs_5'} == 1) {   if ($hash{'display_attrs_5'} == 1) {
     my $lang = &Apache::lonnet::metadata($filelink,'language') if ($metafile == 1);      my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
     $lang = $language{$lang};      # $keywords = '&nbsp;' if (!$keywords);
     $lang = '&nbsp;' if (!$lang);      $r->print('<td> '.($keywords eq '' ? '&nbsp;' : $keywords).
     $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang." </td>\n");        " </td>\n");
    }
   
    if ($hash{'display_attrs_6'} == 1) {
       my $lang = &Apache::lonnet::metadata($filelink,'language');
       $lang = &Apache::loncommon::languagedescription($lang);
       $r->print('<td> '.($lang eq '' ? '&nbsp;' : $lang).
         " </td>\n");
    }
    if ($hash{'display_attrs_8'} == 1) {
   # statistics
       &dynmetaread($filelink);
       $r->print("<td>");
   
           for (qw(count course stdno avetries difficulty disc clear technical
               correct helpful depth)) {
   
               dynmetaprint($r,$filelink,$_);
           }
   
       $r->print("&nbsp;</td>\n");
   
    }
    if ($hash{'display_attrs_10'} == 1) {
       my $source = &Apache::lonnet::metadata($filelink,'sourceavail');
       if($source eq 'open') {
    my $sourcelink = &Apache::lonsource::make_link($filelink,$listname);
    my $quotable_sourcelink = &Apache::loncommon::escape_single($sourcelink);
    &Apache::loncommon::inhibit_menu_check(\$quotable_sourcelink);
    $r->print('<td>'."<a href=\"javascript:openWindow('"
     .$quotable_sourcelink.
     "', 'previewsource', '700', '700', 'no', 'yes','yes');\"".
     " target=\"_self\">".&mt('Source Code')."</a> "."</td>\n");
       } else { #A cuddled else. :P
    $r->print("<td>&nbsp;</td>\n");
       }
  }   }
  $r->print("</tr>\n");   if ($hash{'display_attrs_11'} == 1) {
   # links
      &dynmetaread($filelink);
      $r->print('<td>');
      &coursecontext($r,$filelink);
          for (qw(goto_list comefrom_list sequsage_list dependencies course_list)) {
                dynmetaprint($r,$filelink,$_);
          }
      $r->print('</td>');
           }
           
      
   
    if ($hash{'display_attrs_7'} == 1) {
   # Show resource
      my $output=&showpreview($filelink);
              $r->print('<td class="LC_fontsize_medium">'.($output eq '' ? '&nbsp;':$output).
         " </td>\n");
     }      }
       
       if ($hash{'display_attrs_12'} == 1) {
       my $subject = &Apache::lonnet::metadata($filelink,'subject');
       $r->print('<td> '.($subject eq '' ? '&nbsp;' : $subject).
         " </td>\n");
    }
   
    if ($hash{'display_attrs_13'} == 1) {
       my $notes = &Apache::lonnet::metadata($filelink,'notes');
       $r->print('<td> '.($notes eq '' ? '&nbsp;' : $notes).
         " </td>\n");
    }
   
    if ($hash{'display_attrs_14'} == 1) {
       my $abstract = &Apache::lonnet::metadata($filelink,'abstract');
       $r->print('<td> '.($abstract eq '' ? '&nbsp;' : $abstract).
         " </td>\n");
    }
   
    if ($hash{'display_attrs_15'} == 1) {
       my $gradelevel = &Apache::lonnet::metadata($filelink,'gradelevel');
       $r->print('<td> '.($gradelevel eq '' ? '&nbsp;' : $gradelevel).
         " </td>\n");
    }
   
    if ($hash{'display_attrs_16'} == 1) {
       my $standards = &Apache::lonnet::metadata($filelink,'standards');
       $r->print('<td> '.($standards eq '' ? '&nbsp;' : $standards).
         " </td>\n");
    }
   
    $r->print(&Apache::loncommon::end_data_table_row());
   }
       
       
   
 # -- display directory  # -- display directory
     if ($fnptr == $dirptr) {      if ($fnptr == $dirptr) {
  my @file_ext = split (/\./,$listname);  
  my $curfext = $file_ext[scalar(@file_ext)-1];  
  my $curdir = $startdir.$filecom[0].'/';   my $curdir = $startdir.$filecom[0].'/';
  my $anchor = $curdir;   my $anchor = $curdir;
  $anchor =~ s/\///g;   $anchor =~ s/\W//g;
  $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>");  #SB $r->print("<tr bgcolor=\"$fileclr\">$extrafield<td valign=$valign>");
           $r->print(&Apache::loncommon::start_data_table_row()); # SB: bgcolor suggestion: darkgrey ("LC_info_row"?!?)
   # $r->print('<tr class="LC_info_row">');
           $r->print($extrafield.'<td class="LC_middle LC_nobreak">');
  &begin_form ($r,$curdir);   &begin_form ($r,$curdir);
  my $indentm1 = $indent-1;   my $indentm1 = $indent-1;
  if ($indentm1 < 11) {   my $count = 0;
     $r->print("<img src=",$iconpath,"whitespace",$indentm1,".gif border=0>\n");   while ($count < $indentm1) {
  } else {      $r->print ('<img alt="" src="',$iconpath
     my $ten = int($indentm1/10.);                 ,'whitespace_21.gif" class="LC_icon" />');
     my $rem = $indentm1%10.0;              $count++;
     my $count = 0;   }
     while ($count < $ten) {   $r->print ('<input type="hidden" name="acts" value="" />');
  $r->print("<img src=",$iconpath,"whitespace10.gif border=0>\n");   $r->print ('<a name="'.$anchor.'"></a>');
     $count++;          $r->print ('<a href="#" onclick="document.dirpath'.($dnum-1).'.submit()"><img src="'.$iconpath.
     }     'arrow.'.($nowOpen ? "open" : "closed" ).'.gif"');
     $r->print("<img src=",$iconpath,"whitespace",$rem,".gif border=0>\n") if $rem > 0;   $r->print (' alt="'.$msg.'" class="LC_fileicon" /></a>'.
      "\n");
    my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
           
           my $location = &Apache::loncommon::lonhttpdurl("/adm/lonIcons");
    my $icon = "navmap.folder.".($nowOpen ? "open":"closed").'.gif';
           $r->print ('<a href="javascript:gothere('
                     ."'$quotable_curdir'".');">'
                     .'<img class="LC_fileicon" alt="'.&mt('Open Folder').'" src="'
                     .$location.'/'.$icon.'" />'
                     ."\n");
    $r->print ("$listname</a></form>");
   # Wishlistlink
           $r->print('</td><td><a href="javascript:;" '.
                     'title="'.&mt('Save a link for this folder in Stored Links').'" '.
                     'onclick="set_wishlistlink('."'$listname','$startdir$listname"."/'".')">'.
                     '<img class="LC_icon" src="/res/adm/pages/wishlist.png" '.
                     'alt="'.&mt('save in Stored Links').'" style="width:22px;"/></a></td>');
   # Attributes
    my $filelink = $startdir.$filecom[0].'/default';
   
    if ($hash{'display_attrs_0'} == 1) {
       my $title = &Apache::lonnet::gettitle($filelink);
       $r->print('<td> '.($title eq '' ? '&nbsp;' : $title).
         ' </td>'."\n");
    }
    $r->print('<td class="LC_right"> ',
     $filecom[8]," </td>\n") 
       if $hash{'display_attrs_1'} == 1;
    $r->print('<td class="LC_break"> '.
                     (&Apache::lonlocal::locallocaltime($filecom[9]))." </td>\n")
       if $hash{'display_attrs_2'} == 1;
    $r->print('<td class="LC_break"> '.
                     (&Apache::lonlocal::locallocaltime($filecom[10]))." </td>\n")
       if $hash{'display_attrs_3'} == 1;
   
    if ($hash{'display_attrs_4'} == 1) {
       my $author = &Apache::lonnet::metadata($filelink,'author');
       $r->print('<td> '.($author eq '' ? '&nbsp;' : $author).
         " </td>\n");
    }
    if ($hash{'display_attrs_5'} == 1) {
       my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
       # $keywords = '&nbsp;' if (!$keywords);
       $r->print('<td> '.($keywords eq '' ? '&nbsp;' : $keywords).
         " </td>\n");
    }
    if ($hash{'display_attrs_6'} == 1) {
       my $lang = &Apache::lonnet::metadata($filelink,'language');
       $lang = &Apache::loncommon::languagedescription($lang);
       $r->print('<td> '.($lang eq '' ? '&nbsp;' : $lang).
         " </td>\n");
    }
   
    if ($hash{'display_attrs_8'} == 1) {
      $r->print('<td>&nbsp;</td>');
    }
     if ($hash{'display_attrs_10'} == 1) {
      $r->print('<td>&nbsp;</td>');
    }
    if ($hash{'display_attrs_7'} == 1) {
      $r->print('<td>&nbsp;</td>');
           }
           if ($hash{'display_attrs_11'} == 1) {
      $r->print('<td>&nbsp;</td>');
    }
    if ($hash{'display_attrs_12'} == 1) {
       my $subject = &Apache::lonnet::metadata($filelink,'subject');
       $r->print('<td> '.($subject eq '' ? '&nbsp;' : $subject).
         " </td>\n");
    }
    if ($hash{'display_attrs_13'} == 1) {
       my $notes = &Apache::lonnet::metadata($filelink,'notes');
       $r->print('<td> '.($notes eq '' ? '&nbsp;' : $notes).
         " </td>\n");
    }
   
    if ($hash{'display_attrs_14'} == 1) {
       my $abstract = &Apache::lonnet::metadata($filelink,'abstract');
       $r->print('<td> '.($abstract eq '' ? '&nbsp;' : $abstract).
         " </td>\n");
  }   }
  $r->print ("<a name=\"$anchor\">\n<input src=\"$iconpath");  
  $r->print ("folder_pointer_closed.gif\"") if $diropen == 0;   if ($hash{'display_attrs_15'} == 1) {
  $r->print ("folder_pointer_opened.gif\"") if $diropen == 1;      my $gradelevel = &Apache::lonnet::metadata($filelink,'gradelevel');
  $r->print (" name=\"$msg\" height=\"22\" type=\"image\" border=\"0\">\n");      $r->print('<td> '.($gradelevel eq '' ? '&nbsp;' : $gradelevel).
  $r->print("<img src=",$iconpath,"folder_closed.gif border=0>\n") if $diropen == 0;        " </td>\n");
  $r->print("<img src=",$iconpath,"folder_opened.gif border=0>\n") if $diropen == 1;   }
  $r->print("$listname $tabtag</tr></form>\n");  
    if ($hash{'display_attrs_16'} == 1) {
       my $standards = &Apache::lonnet::metadata($filelink,'standards');
       $r->print('<td> '.($standards eq '' ? '&nbsp;' : $standards).
         " </td>\n");
    }
   
   
    $r->print(&Apache::loncommon::end_data_table_row());
       }
   
   }
   
   sub coursecontext {
       my ($r,$filelink)=@_;
       my $filesymb=&Apache::lonnet::symbread($filelink);
       if ($filesymb) {
    my ($map,$index,$resource)=&Apache::lonnet::decode_symb($filesymb);
    $r->print(
               &mt('Already in this course:').'<br />'
              .&mt('[_1] in folder/map [_2]',
           &Apache::lonnet::gettitle($resource),
           &Apache::lonnet::gettitle($map))
              .'<br />');
       }
   }
   
   sub showpreview {
       my ($filelink)=@_;
       if ($filelink=~m-^(/ext/|https?://)-) {
    return &mt('External Resource, preview not enabled');
       }
       my ($curfext)=($filelink=~/\.(\w+)$/);
       my $output='';
       my $embstyle=&Apache::loncommon::fileembstyle($curfext);
       if ($embstyle eq 'ssi') {
          my $cache=$Apache::lonnet::perlvar{'lonDocRoot'}.$filelink.
                       '.tmp';
          if ((!$env{'form.updatedisplay'}) &&
                       (-e $cache)) {
             open(FH,$cache);
             $output=join("\n",<FH>);
             close(FH);
          } else {
   # In update display mode, remove old cache. This is done to retroactively
   # clean up course context renderings.
     if (-e $cache) {
          unlink($cache);
     }
             $output=&Apache::lonnet::ssi_body($filelink);
   # Is access denied? Don't render, don't store
             if ($output=~/LONCAPAACCESSCONTROLERRORSCREEN/s) {
                $output='';
   # Was this rendered in course content? Don't store
             } elsif (!&Apache::lonnet::symbread($filelink)) {
                open(FH,">$cache");
                print FH $output;
                close(FH);
             }
          }
       } elsif ($embstyle eq 'img') {
          $output='<img alt="'.&mt('Preview').'" src="'.$filelink.'" />';
       } elsif ($filelink=~m{^/res/($match_domain)/($match_username)/}) {
          $output='<img  alt="'.&mt('Preview').'" src="http://'.
                    &Apache::lonnet::hostname(&Apache::lonnet::homeserver($2,$1)).
                    '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
     }      }
       return $output;
   }
   
   sub dynmetaprint {
       my ($r,$filelink,$item)=@_;
       if ($dynhash{$filelink}->{$item}) {
    $r->print("\n<br />".$fieldnames{$item}.': '.
     &Apache::lonmeta::prettyprint($item,
    $dynhash{$filelink}->{$item},
     (($env{'form.catalogmode'} ne 'import')?'preview':''),
     '',
     (($env{'form.catalogmode'} eq 'import')?'document.forms.fileattr':''),1));
       }
 }  }
   
 #---------------------prints the beginning of a form for directory or file link  # ------------------- prints the beginning of a form for directory or file link
 sub begin_form {  sub begin_form {
     my ($r,$uri) = @_;      my ($r,$uri) = @_;
     my $anchor = $uri;      my $anchor = $uri;
     $anchor =~ s/\///g;      $anchor =~ s/\W//g;
     $r->print ("<form method=\"post\" name=\"dirpath\" action=\"/res/\#$anchor\" enctype=\"application/x-www-form-urlencoded\">\n");      $uri=&Apache::loncommon::escape_single($uri);
     $r->print ("$hidden<input type=hidden name=openuri value=\"$uri\">\n");      $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
          '#'.$anchor.
 #    for (my $i=0; $i<=5; $i++) {         '" onsubmit="return rep_dirpath(\''.$dnum.'\''.
 # $r->print ("<input type=hidden name=attr$i value=\"1\">\n") if $ENV{'form.attr'.$i} == 1;         ',document.forms.fileattr.acts.value)" '.
 #    }         'enctype="application/x-www-form-urlencoded">'."\n");
       $r->print ('<input type="hidden" name="openuri" value="'.$uri.'" />'.
          "\n");
       $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n");
       $r->print(&Apache::loncommon::inhibit_menu_check('input'));
       $dnum++;
   }
   
   # --------- settings whenever the user causes the indexer window to be launched
   sub start_fresh_session {
       my ($hash) = @_;
       delete $hash->{'form.catalogmode'};
       delete $hash->{'form.mode'};
       delete $hash->{'form.form'};
       delete $hash->{'form.element'};
       delete $hash->{'form.omit'};
       delete $hash->{'form.only'};
       foreach (keys %{$hash}) {
           delete $hash->{$_} if (/^(pre_|store)/);
       }
   }
   
   # ------------------------------------------------------------------- setvalues
   sub setvalues {
       # setvalues is used in registerurl to synchronize the database
       # hash and environment hashes
       my ($H1,$h1key,$H2,$h2key) =@_;
       #
       if (exists $H2->{$h2key}) {
    $H1->{$h1key} = $H2->{$h2key};
       } elsif (exists $H1->{$h1key}) {
    $H2->{$h2key} = $H1->{$h1key};
       } 
 }  }
   
 1;  1;
 __END__  
   sub cleanup {
       if (tied(%hash)){
    &Apache::lonnet::logthis('Cleanup indexer: hash');
       }
       return OK;
   }
   
   
   
   
   
   =head1 NAME
   
   Apache::lonindexer - mod_perl module for cross server filesystem browsing
   
   =head1 SYNOPSIS
   
   Invoked by /etc/httpd/conf/srm.conf:
   
    <LocationMatch "^/res.*/$">
    SetHandler perl-script
    PerlHandler Apache::lonindexer
    </LocationMatch>
   
   =head1 INTRODUCTION
   
   This module enables a scheme of browsing across a cross server.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 HANDLER SUBROUTINE
   
   This routine is called by Apache and mod_perl.
   
   =over 4
   
   =item *
   
   read in machine configuration variables
   
   =item *
   
   see if called from an interactive mode
   
   =item *
   
   refresh environment with user database values (in %hash)
   
   =item *
   
   define extra fields and buttons in case of special mode
   
   =item *
   
   set catalogmodefunctions to have extra needed javascript functionality
   
   =item *
   
   print header
   
   =item *
   
   evaluate actions from previous page (both cumulatively and chronologically)
   
   =item *
   
   output title
   
   =item *
   
   get state of file attributes to be showing
   
   =item *
   
   output state of file attributes to be showing
   
   =item *
   
   output starting row to the indexed file/directory hierarchy
   
   =item *
   
   read in what directories have previously been set to "open"
   
   =item *
   
   if not at top level, provide an uplink arrow
   
   =item *
   
   recursively go through all the directories and output as appropriate
   
   =item *
   
   information useful for group import
   
   =item *
   
   end the tables
   
   =item *
   
   end the output and return
   
   =back
   
   =head1 OTHER SUBROUTINES
   
   =over 4
   
   =item *
   
   scanDir - recursive scan of a directory
   
   =item *
   
   get_list - get complete matched list based on the uri (returns an array)
   
   =item *
   
   match_ext - filters out files based on extensions (returns an array)
   
   =item *
   
   display_line - displays one line in appropriate table format
   
   =item *
   
   begin_form - prints the beginning of a form for directory or file link
   
   =item *
   
   start_fresh_session - settings whenever the user causes the indexer window
   to be launched
   
   =back
   
   =cut
Removed from v.1.8  
changed lines
  Added in v.1.213.4.7

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