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Diff for /loncom/interface/lonindexer.pm between versions 1.13 and 1.181.4.1

version 1.13, 2001/07/08 18:31:10 version 1.181.4.1, 2009/05/21 00:36:16
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
 # 06/01/2001 Scott Harrison  # the Free Software Foundation; either version 2 of the License, or
 # 06/02/2001 Scott Harrison  # (at your option) any later version.
 # 06/15/2001 Scott Harrison  #
 # 06/26/2001 H. K. Ng  # LON-CAPA is distributed in the hope that it will be useful,
 # 07/08/2001 H. K. Ng  # 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. BEGIN block (to be run once after compilation)                         ##
   ## 5. Handling routine called via Apache and mod_perl                        ##
   ## 6. 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 %language; # has the reference information present in language.tab
 my $extrafield;  my %dynhash; # hash of hashes for dynamic metadata
 my $fnum;  my %dynread; # hash of directories already read for dynamic metadata
 sub BEGIN {  my %fieldnames; # Metadata fieldnames
     my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/language.tab');  # ----- Values which are set by the handler subroutine and are accessible to
     map {  # -----     other methods.
  $_=~/(\w+)\s+([\w\s\-]+)/;  my $extrafield; # default extra table cell
  $language{$1}=$2;  my $fnum; # file counter
     } <$fh>;  my $dnum; # directory counter
 }  
   # ----- 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;      $fnum=0;
       $dnum=0;
   
       # Deal with stupid global variables (is there a way around making
       # these global to this package?  It is just so wrong....)
       undef (@Only);
       undef (@Omit);
       %fieldnames=&Apache::lonmeta::fieldnames();
   
   # ------------------------------------- read in machine configuration variables
     my $iconpath= $r->dir_config('lonIconsURL') . "/";      my $iconpath= $r->dir_config('lonIconsURL') . "/";
     my $domain  = $r->dir_config('lonDefDomain');      my $domain  = $r->dir_config('lonDefDomain');
     my $role    = $r->dir_config('lonRole');      my $role    = $r->dir_config('lonRole');
Line 53  sub handler { Line 105  sub handler {
     my $tabdir  = $r->dir_config('lonTabDir');      my $tabdir  = $r->dir_config('lonTabDir');
   
     my $fileclr='#ffffe6';      my $fileclr='#ffffe6';
 # -------------------------------------- see if called from an interactive mode      my $line;
     map {      my (@attrchk,@openpath,$typeselect);
        my ($name, $value) = split(/=/,$_);      my $uri=$r->uri;
        $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 $closebutton='';  # -------------------------------------- see if called from an interactive mode
       # Get the parameters from the query string
       &Apache::loncommon::get_unprocessed_cgi($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 $diropendb = 
     ' border="0"></td>';   "/home/httpd/perl/tmp/$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)) {
     elsif ($ENV{'form.catalogmode'} eq 'groupimport') {   $hash{$key}=$value;
  $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.      }
     '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.      untie(%dbfile);
     ' border="0"></td>';   }
  $colspan=" colspan='2' ";  
  $hidden=<<END;  
 <input type='hidden' name='catalogmode' value='groupimport'>  
 END  
         $closebutton=<<END;  
 <input type="button" name="close" value='CLOSE' onClick="self.close()">  
 END  
         $groupimportbutton=<<END;  
 <input type="button" name="groupimport" value='GROUP IMPORT' onClick="javascript:select_group()">  
 END  
     }      }
   # - Evaluate actions from previous page (both cumulatively and chronologically)
           if ($env{'form.catalogmode'} eq 'import' || $hash{'form.catalogmode'} eq 'import') {
       &Apache::groupsort::update_actions_hash(\%hash);
    }
       
       {
     #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_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') {
       $extrafield='<td bgcolor="'.$fileclr.'" valign="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
           }
    elsif ($env{'form.catalogmode'} eq 'import') {
       $extrafield='<td bgcolor="'.$fileclr.'" valign="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
               $groupimportbutton=<<END;
   <input type="button" name="groupimport" value='$gi'
   onClick="javascript:select_group()" />
   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() {
     var linkflag=false;      window.location="$location"+document.forms.fileattr.acts.value;
     for (var num=0; num<document.forms.fnum.fnum.value; num++) {  }
  if (eval("document.forms.form"+num+".filelink.checked")) {  
 //    alert(eval("document.forms.form"+num+".title.value")+  function changeURL(val) {
 //       eval("document.forms.form"+num+".filelink.value"));      if (window.opener.document) {
     insertRowInLastRow();   window.opener.document.forms["$form"].elements["$element"].value=val;
     placeResourceInLastRow(      } else {
    eval("document.forms.form"+num+".title.value"),      alert("The file you selected is: "+val);
    eval("document.forms.form"+num+".filelink.value"),  
    linkflag  
    );  
     linkflag=true;  
  }  
     }  
     opener.editmode=0;  
     opener.notclear=0;  
     opener.linkmode=0;  
     opener.infoclear();  
     opener.draw();  
 }  
 function insertRowInLastRow() {  
     opener.insertrow(opener.maxrow);  
     opener.addobj(opener.maxrow,'e&2');  
 }  
 function placeResourceInLastRow (title,url,linkflag) {  
     opener.newresource(opener.maxrow,2,opener.escape(title),opener.escape(url),'false','normal');  
     opener.save();  
     opener.mostrecent=opener.obj.length-1;  
     if (linkflag) {  
  opener.joinres(opener.linkmode,opener.mostrecent,0);  
     }      }
     opener.linkmode=opener.mostrecent;  
 }  }
   END
                   if (!$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  = "$element"+"_value";
           var checkboxname = "$element"+"_setparmval";
    window.opener.document.forms["$form"].elements[elementname].value=val;
           window.opener.document.forms["$form"].elements[checkboxname].checked=true;
       } else {
       alert("The file you selected is: "+val);
     }      }
 }  }
   
 END  END
               }
           }
           $catalogmodefunctions.=<<END;
   var acts='';
   function rep_dirpath(suffix,val) {
       eval("document.forms.dirpath"+suffix+".acts.value=val");
   }
   END
    if ($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>  $catalogmodefunctions;
   function update_only(field) {
 <SCRIPT language="javascript">      alert(field.name);
 $catalogmodefunctions  }
 function openWindow(url, wdwName, w, h, toolbar,scrollbar) {  function checkAll() {
     var options = "width=" + w + ",height=" + h + ",";      var numForms = document.forms.length;
       for (i=0;i<numForms;i++) {
           var numElements = document.forms[i].elements.length;
           for (j=0;j<numElements;j++){
               var fieldName = document.forms[i].elements[j].name;
               if (fieldName == 'filelink') {
                   document.forms[i].elements[j].checked = true;
                   queue(document.forms[i].name);
               }
           }
       }
   }
   function uncheckAll() {
       var numForms = document.forms.length;
       for (i=0;i<numForms;i++) {
           var numElements = document.forms[i].elements.length;
           for (j=0;j<numElements;j++){
               var fieldName = document.forms[i].elements[j].name;
               if (fieldName == 'filelink') {
                   document.forms[i].elements[j].checked = false;
                   queue(document.forms[i].name);
               }
           }
       }
   }
   function openWindow(url, wdwName, w, h, toolbar,scrollbar,locationbar) {
       var xpos = (screen.width-w)/2;
       xpos = (xpos < 0) ? '0' : xpos;
       var ypos = (screen.height-h)/2-30;
       ypos = (ypos < 0) ? '0' : ypos;
       var options = "width=" + w + ",height=" + h + ",screenx="+xpos+",screeny="+ypos+",";
     options += "resizable=yes,scrollbars="+scrollbar+",status=no,";      options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
     options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";      options += "menubar=no,toolbar="+toolbar+",location="+locationbar+",directories=no";
     var newWin = window.open(url, wdwName, options);      var newWin = window.open(url, wdwName, options);
     newWin.focus();      newWin.focus();
 }  }
 </SCRIPT>  function gothere(val) {
       window.location=val+'?acts='+document.forms.fileattr.acts.value$inhibit_menu;
 </head>  }
 <body bgcolor="#FFFFFF">  </script>
 ENDHEADER  ENDHEADER
   
     my $line;          my ($headerdom)=($uri=~m{^/res/($match_domain)/});
     my (@attrchk,@openpath);   $r->print(&Apache::loncommon::start_page('Browse Resources',$js,
     my $uri=$r->uri;   {'domain' => $headerdom,}));
   # ---------------------------------- get state of file types to be showing
     $r->print('<h2><font color="#888888">The LearningOnline With CAPA Network Directory Browser</font></h2>'."\n");   if ($env{'form.only'}) {
       $typeselect = $env{'form.only'};
     my $diropendb = "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";   } else {
       $typeselect = '';
     if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {   }
   
  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' 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=hidden name=dirPointer value="on">  
 <input type="submit" name="attrs" value="Review">&nbsp;  
 <input type="submit" name="attrs" value="Refresh">  
 $hidden  
 $closebutton  
 $groupimportbutton  
 </form>  
 END  
   
     my $titleclr="#ddffff";  
     $r->print("<table border=0><tr><td bgcolor=#eeeeee>\n");  
     $r->print("<table border=0><tr>\n");  
     $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n");  
     $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) </b></td>\n") if ($hash{'display_attrs_0'} == 1);  
     $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n") if ($hash{'display_attrs_1'} == 1);  
     $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n") if ($hash{'display_attrs_2'} == 1);  
     $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n") if ($hash{'display_attrs_3'} == 1);  
     $r->print("<td bgcolor=$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);  
     $r->print("</tr>");  
   
  map {  # ------------------------------- 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(
      'ti' => 'Title',
      'si' => 'Size',
      'la' => 'Last access',
      'lm' => 'Last modified',
      'st' => 'Statistics',
      'au' => 'Author',
      'kw' => 'Keywords',
                                              'sb' => 'Subject',
                                              'nt' => 'Notes',
                                              'ab' => 'Abstract',
      'ln' => 'Language',
                                              'gl' => 'Grade Level',
                                              'sd' => 'Standards',
      'sa' => 'Source Available',
      'sr' => 'Show resource',
      'li' => 'Linked/Related Resources',
      'av' => 'All versions',
      'ud' => 'Update Display',
      'pr' => 'Problems',
      'gr' => 'Graphics',
      'at' => 'All types',
                                              'hd' => 'Display Options',
      );
    $r->print(<<END);
   <fieldset>
   <legend>$lt{'hd'}</legend>
   <form method="post" name="fileattr" action="$uri"
    enctype="application/x-www-form-urlencoded">
   <label><input type="checkbox" name="attr9" value="1" $attrchk[9] onClick="this.form.submit();" /> $lt{'av'}</label>
   <table border="0">
   <tr>
   <td><label><input type="checkbox" name="attr0" value="1" $attrchk[0] onClick="this.form.submit();" /> $lt{'ti'}</label></td>
   <td><label><input type="checkbox" name="attr4" value="1" $attrchk[4] onClick="this.form.submit();" /> $lt{'au'}</label></td>
   <td><label><input type="checkbox" name="attr5" value="1" $attrchk[5] onClick="this.form.submit();" /> $lt{'kw'}</label></td>
   <td><label><input type="checkbox" name="attr6" value="1" $attrchk[6] onClick="this.form.submit();" /> $lt{'ln'}</label></td>
   <td><label><input type="checkbox" name="attr13" value="1" $attrchk[13] onClick="this.form.submit();" /> $lt{'nt'}</label></td>
   <td><label><input type="checkbox" name="attr16" value="1" $attrchk[16] onClick="this.form.submit();" /> $lt{'sd'}</label></td>
   </tr>
   <tr>
   <td><label><input type="checkbox" name="attr1" value="1" $attrchk[1] onClick="this.form.submit();" /> $lt{'si'}</label></td>
   <td><label><input type="checkbox" name="attr2" value="1" $attrchk[2] onClick="this.form.submit();" /> $lt{'la'}</label></td>
   <td><label><input type="checkbox" name="attr3" value="1" $attrchk[3] onClick="this.form.submit();" /> $lt{'lm'}</label></td>
   <td><label><input type="checkbox" name="attr10" value="1" $attrchk[10] onClick="this.form.submit();" /> $lt{'sa'}</label></td>
   <td><label><input type="checkbox" name="attr14" value="1" $attrchk[14] onClick="this.form.submit();" /> $lt{'ab'}</label></td>
   <td>&nbsp;</td>
   </tr>
   <tr>
   <td><label><input type="checkbox" name="attr8" value="1" $attrchk[8] onClick="this.form.submit();" /> $lt{'st'}</label></td>
   <td><label><input type="checkbox" name="attr11" value="1" $attrchk[11] onClick="this.form.submit();" /> $lt{'li'}</label></td>
   <td><label><input type="checkbox" name="attr7" value="1" $attrchk[7] onClick="this.form.submit();" /> $lt{'sr'}</label></td>
   <td><label><input type="checkbox" name="attr12" value="1" $attrchk[12] onClick="this.form.submit();" /> $lt{'sb'}</label></td>
   <td><label><input type="checkbox" name="attr15" value="1" $attrchk[15] onClick="this.form.submit();" /> $lt{'gl'}</label></td>
   <td>&nbsp;</td>
   </tr>
   </table>
   <input type="hidden" name="attrs" value="1" />
   END
           my @file_categories = &Apache::loncommon::filecategories();
           my %select_file_categories;
           my @select_form_order = ('');
           $select_file_categories{''} = &mt('All file types');
           foreach my $cat (@file_categories) {
       my $types = join(",",&Apache::loncommon::filecategorytypes($cat));
       $select_file_categories{$types} = $cat;
       push(@select_form_order,$types);
    }
           $select_file_categories{'select_form_order'} = \@select_form_order;
           my $type_element=
       &Apache::loncommon::select_form($typeselect,'only',
       %select_file_categories);
           $type_element = '<label>'.&mt('File Type Displayed: [_1]',
         $type_element).'</label>';
           $r->print($type_element
                    .'</fieldset>');
           $r->print(<<END);
   <br />
   <input type="submit" name="updatedisplay" value="$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
           $r->print(&Apache::lonhtmlcommon::crumbs($storeuri,'','',
    (($env{'form.catalogmode'} eq 'import')?
    'document.forms.fileattr':'')).
     &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();'));
   # -------------------------------------------------------- Resource Home Button
    my $reshome=$env{'course.'.$env{'request.course.id'}.'.reshome'};
    if ($reshome) {
       $r->print("<font size='+2'><a href='");
       if ($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></font>');
    }
    $r->print('</form>');
   # ------------------------------------------------------ Remember where we were
    &Apache::loncommon::storeresurl($storeuri);
    &Apache::lonhtmlcommon::store_recent('residx',$storeuri,$storeuri);
   # -------------------------------------------------- Check All and Uncheck all
    if ($env{'form.catalogmode'} eq 'import') {
       $r->print('<br /><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()" />');
    }
   # ----------------- output starting row to the indexed file/directory hierarchy
           my $titleclr="#ddffff";
           #$r->print(&initdebug());
           #$r->print(&writedebug("Omit:@Omit")) if (@Omit);
           #$r->print(&writedebug("Only:@Only")) if (@Only);
           $r->print('<table width="100%" border="0"><tr><td bgcolor="#777777">'."\n");
    $r->print('<table width="100%" border="0"><tr bgcolor="'.$titleclr.'">'."\n");
    $r->print("<td $colspan><b>".&mt('Name')."</b></td>\n");
    $r->print("<td><b>".&mt('Title')."</b></td>\n") 
       if ($hash{'display_attrs_0'} == 1);
    $r->print("<td align=right><b>".&mt("Size")." (".&mt("bytes").") ".
     "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
    $r->print("<td><b>".&mt("Last accessed")."</b></td>\n") 
       if ($hash{'display_attrs_2'} == 1);
    $r->print("<td><b>".&mt("Last modified")."</b></td>\n")
       if ($hash{'display_attrs_3'} == 1);
    $r->print("<td><b>".&mt("Author(s)")."</b></td>\n")
       if ($hash{'display_attrs_4'} == 1);
    $r->print("<td><b>".&mt("Keywords")."</b></td>\n")
       if ($hash{'display_attrs_5'} == 1);
    $r->print("<td><b>".&mt("Language")."</b></td>\n")
       if ($hash{'display_attrs_6'} == 1);
    $r->print("<td><b>".&mt("Usage Statistics")." <br />(".
     &mt("Courses/Network Hits").")</b> ".&mt('updated periodically')."</td>\n")
       if ($hash{'display_attrs_8'} == 1);
    $r->print("<td><b>".&mt("Source Available")."</b></td>\n")
       if ($hash{'display_attrs_10'} == 1);
    $r->print("<td><b>".&mt("Linked/Related Resources")."</b></td>\n")
       if ($hash{'display_attrs_11'} == 1);
    $r->print("<td><b>".&mt("Resource")."</b></td>\n")
       if ($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('</tr>');
   
   # ----------------- 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 259  END Line 615  END
     }      }
  }   }
   
  my $bredir = $ENV{'form.dirPointer'};  
  my $toplevel;   my $toplevel;
  my $indent = 0;   my $indent = 0;
  $uri = $uri.'/' if $uri !~ /.*\/$/;   $uri = $uri.'/' if $uri !~ /.*\/$/;
  if ($bredir ne "on") {  
     $hash{'top.level'} = $uri;  
     $toplevel = $uri;  
   
  } else {    if ($env{'form.dirPointer'} ne 'on') {
     $toplevel = $hash{'top.level'};       $hash{'top.level'} = $uri;
  }       $toplevel = $uri;
  if ($toplevel ne "/res/"){    } else {
        $toplevel = $hash{'top.level'};
     }
   
   # -------------------------------- if not at top level, provide an uplink arrow
    if ($toplevel ne '/res/'){
     my (@uri_com) = split(/\//,$uri);      my (@uri_com) = split(/\//,$uri);
     pop @uri_com;      pop @uri_com;
     my $upone = join('/',@uri_com);      my $upone = join('/',@uri_com);
Line 278  END Line 635  END
     &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);      &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
     $indent = 1;      $indent = 1;
  }   }
  &scanDir ($r,$toplevel,$indent);  
   # -------- recursively go through all the directories and output as appropriate
    &scanDir ($r,$toplevel,$indent,\%hash);
   
  $r->print("<form name='fnum'>");  
  $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");  # -------------------------------------------------------------- end the tables
  $r->print("</table>");   $r->print('</table>');
  $r->print("</td></tr></table>");  # ---------------------------- embed hidden information useful for group import
  $r->print("</body></html>\n");   $r->print("<form name='fnum' action=''>");
  untie(%hash);   $r->print("<input type='hidden' name='fnum' value='$fnum' /></form>");
     } else {  # -------------------------------------------------------------- end the tables
  $r->print("Unable to tie hash to db file");   $r->print('</td></tr></table>');
   
   # --------------------------------------------------- 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 have 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 = "closed";   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 = "opened";      $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 $diropen eq "opened";   &scanDir ($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 $luri = $uri) =~ s/\//_/g;
     $luri =~ s/\//_/g;      if ($env{'form.updatedisplay'}) {
    foreach (keys %hash) {
     if ($ENV{'form.attrs'} eq "Refresh") {  
  map {  
     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 {
   # is really a directory
  @list = &Apache::lonnet::dirlist($uri);   @list = &Apache::lonnet::dirlist($uri);
  $hash{'dirlist_files_'.$luri} = join('\n',@list);   $hash{'dirlist_files_'.$luri} = join("\n",@list);
    $hash{'dirlist_timestamp_files_'.$luri} = time;
       }
       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
 }  }
   
 #-------------------------- filters out files based on extensions  sub writedebug {
       my ($text) = @_;
       return "<script type=\"text/javascript\">output('$text');</script>";
   }
   
   # -------------------- 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 357  sub match_ext { Line 806  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";      my $fileclr="#ffffe6";
     my $iconpath= $r->dir_config('lonIconsURL') . "/";      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 eq "opened";      $msg = &mt('Close').' '.$filecom[0].' '.&mt('directory') if $diropen eq 'opened';
   
     my $tabtag="</td>";      my $tabtag='</td>';
     my $i=0;      my $i=0;
       while ($i<=16) {
     while ($i<=5) {   $tabtag=join('',$tabtag,"<td>&nbsp;</td>")
  $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,">&nbsp;</td>") if $hash{'display_attrs_'.$i} == 1;      if ($i != 9 &&
    $hash{'display_attrs_'.$i} == 1);
  $i++;   $i++;
     }      }
     if ($filecom[1] eq "viewOneUp") {      my $valign = ($hash{'display_attrs_7'} == 1 ? 'top' : 'bottom');
  $r->print("<tr>$extrafield");  
  $r->print("<td bgcolor=$fileclr valign=bottom>\n");  # display uplink arrow
  $r->print ('<form method="post" name="dirpath" action="'.$startdir.      if ($filecom[1] eq 'viewOneUp') {
    '" enctype="application/x-www-form-urlencoded">'."\n");   my $updir=$startdir;
  $r->print ($hidden.'<input type=hidden name=openuri value="'.$startdir.'">'."\n");  # -------------- Filter out sequence containment in crumbs and "recent folders"
    $updir='/'.(split(/\.(page|sequence)\/\//,$startdir))[-1];
    $updir=~s/\/+/\//g;
   
    $r->print("<tr valign='$valign' bgcolor=\"$fileclr\">$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");
  $r->print ('<input src="'.$iconpath.'arrow_up.gif"');   $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
  $r->print (' name="'.$msg.'" height="22" type="image" border="0">'."\n");   $r->print (' name="'.$msg.'" type="image" class="LC_indexer_icon" />'.
  $r->print("Up $tabtag</tr></form>\n");     "\n");
    $r->print(&mt("Up")."</form>$tabtag</tr>\n");
  return OK;   return OK;
     }      }
     if ($filecom[1] eq "domain") {  # Do we have permission to look at this?
  $r->print ('<input type=hidden name=dirPointer value="on">'."\n") if ($ENV{'form.dirPointer'} eq "on");  
  $r->print("<tr>$extrafield");      if($filecom[15] ne '1') { return OK if (!&Apache::lonnet::allowed('bre',$pathprefix.$filecom[0])); }
  $r->print("<td bgcolor=$fileclr valign=bottom>");  
  &begin_form ($r,$filecom[0].'/');  # make absolute links appear on different background
  my $anchor = $filecom[0].'/';      if ($absolute) { $fileclr='#ccdd99'; }
  $anchor =~ s/\///g;  
  $r->print ('<a name="'.$anchor.'">');  # display domain
  $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.'.gif"');       if ($filecom[1] eq 'domain') {
  $r->print (' name="'.$msg.'" height="22" type="image" border="0">'."\n");    $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n")
  $r->print ('<a href="'.$filecom[0].'"><img src="'.$iconpath.'server.gif"');       if ($env{'form.dirPointer'} eq "on");
  $r->print (' border="0"></a>'."\n");   $r->print("<tr valign='$valign' bgcolor=\"$fileclr\">$extrafield");
  $r->print("Domain - $listname $tabtag</tr></form>\n");   $r->print("<td>");
    &begin_form ($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="" />');
    $r->print ('<input src="'.$iconpath.'folder_pointer_'.
      $diropen.'.gif"'); 
    $r->print (' name="'.$msg.'" type="image" class="LC_indexer_icon" />'.
      "\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_icon" /></a>'."\n");
    $r->print (&mt("Domain")." - $listname ");
    if (&Apache::lonnet::domain($listname,'description')) {
       $r->print("(".&Apache::lonnet::domain($listname,'description').
         ")");
    }
    $r->print ("</form>$tabtag</tr>\n");
  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 nowrap>\n");  
  my $curdir = $startdir.$filecom[0].'/';   my $curdir = $startdir.$filecom[0].'/';
  my $anchor = $curdir;   my $anchor = $curdir;
  $anchor =~ s/\///g;   $anchor =~ s/\W//g;
    $r->print("<tr bgcolor=\"$fileclr\">$extrafield<td valign=$valign>");
  &begin_form ($r,$curdir);   &begin_form ($r,$curdir);
  $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.'whitespace1.gif" border=0>'."\n");   $r->print ('<a name="'.$anchor.'"></a><img alt="" src="'.$iconpath.
  $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.'.gif"');      'whitespace1.gif" class="LC_icon" />'."\n");
  $r->print (' name="'.$msg.'" height="22" type="image" border="0">'."\n");   $r->print ('<input type="hidden" name="acts" value="" />');
  $r->print ('<a href="'.$curdir.'"><img src='.$iconpath.'quill.gif border=0 name="'.$msg.'" height="22"></a>');   $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
  $r->print ($listname.$tabtag.'</tr></form>'."\n");     '.gif"'); 
    $r->print (' name="'.$msg.'" type="image" class="LC_indexer_icon" />'.
      "\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_indexer_icon" /></a>');
    my $domain=(split(m|/|,$startdir))[2];
    my $plainname=&Apache::loncommon::plainname($listname,$domain);
    $r->print ($listname);
    if (defined($plainname) && $plainname) { $r->print(" ($plainname) "); }
    $r->print ('</form>'.$tabtag.'</tr>'."\n");
  return OK;   return OK;
     }      }
   
 # display file  # display file
     if ($fnptr == 0 and $filecom[3] ne "") {      if (($fnptr == 0 and $filecom[3] ne '') or $absolute) {
           my $title;
    my $filelink = $pathprefix.$filecom[0];
    if ($hash{'display_attrs_0'} == 1) {
       $title = &Apache::lonnet::gettitle($filelink);
    }
  my @file_ext = split (/\./,$listname);   my @file_ext = split (/\./,$listname);
  my $curfext = $file_ext[scalar(@file_ext)-1];   my $curfext = $file_ext[-1];
  my $filelink = $startdir.$filecom[0];          if (@Omit) {
  $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>");              foreach (@Omit) { return OK if (lc($curfext) eq $_); }
  my $metafile = grep /^$filecom[0]\.meta\&/, @list;          }
  my $title;          if (@Only) {
         if ($ENV{'form.catalogmode'} eq 'interactive') {              my $skip = 1;
     $title=$listname;              foreach (@Only) { $skip = 0 if (lc($curfext) eq $_); }
     $title = &Apache::lonnet::metadata($filelink,'title')              return OK if ($skip > 0);
  if ($metafile == 1);          }
     $title=$listname unless $title;   # Set the icon for the file
     $r->print("<a href='javascript:select_data(\"",   my $iconname = &Apache::loncommon::icon($listname);
               $title,'","',$filelink,"\")'>");   $r->print('<tr valign="'.$valign.'" bgcolor="'.$fileclr.'">'.
     $r->print("<img src='",$iconpath,"select.gif' border=0></a>\n");                    '<td valign="top"><span class="LC_nobreak">');
     $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");  
  }          if ($env{'form.catalogmode'} eq 'interactive') {
         elsif ($ENV{'form.catalogmode'} eq 'groupimport') {      my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
     $title=$listname;              $r->print("<a href=\"javascript:select_data(\'",
     $title = &Apache::lonnet::metadata($filelink,'title')                        $quotable_filelink,"')\">");
  if ($metafile == 1);      $r->print("<img alt=\"\" src='",$iconpath,"select.gif' class='LC_icon' /></a>".
     $title=$listname unless $title;        "\n");
     $r->print("<form name='form$fnum'>\n");      $r->print('</span></td><td valign="top"><span class="LC_nobreak">');
    } elsif ($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></span></td><td valign="top"><span class="LC_nobreak">');
       $hash{"pre_${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 > 0 and $indent < 11) {   if ($filelink=~/\.(page|sequence)$/) {
     $r->print("<img src=",$iconpath,"whitespace",$indent,".gif border=0>\n");      my $curdir = $startdir.$filecom[0].'/';
       &begin_form($r,$curdir);
       $indent--;
    }
   # General indentation
    if ($indent > 0 and $indent < 16) {
       $r->print("<img alt=\"\" src='",$iconpath,"whitespace",$indent,
         ".gif' class='LC_icon' />\n");
  } elsif ($indent >0) {   } elsif ($indent >0) {
     my $ten = int($indent/10.);      my $ten = int($indent/10.);
     my $rem = $indent%10.0;      my $rem = $indent%10.0;
     my $count = 0;      my $count = 0;
     while ($count < $ten) {      while ($count < $ten) {
  $r->print("<img src=",$iconpath,"whitespace10.gif border=0>\n");   $r->print("<img alt=\"\" src=".$iconpath.
     "whitespace10.gif class='LC_icon' />\n");
     $count++;      $count++;
     }      }
     $r->print("<img src=",$iconpath,"whitespace",$rem,".gif border=0>\n") if $rem > 0;      $r->print("<img alt=\"\" src=",$iconpath,"whitespace",$rem,
         ".gif class='LC_icon' />\n") if $rem > 0;
  }   }
   # Sequence open/close icon
  $r->print("<img src=$iconpath$curfext.gif border=0>\n");   if ($filelink=~/\.(page|sequence)$/) {
  $r->print (" <a href=\"javascript:openWindow('".$filelink."', 'metadatafile', '450', '500', 'no', 'yes')\"; TARGET=_self>$listname</a> ");      my $curdir = $startdir.$filecom[0].'/';
       my $anchor = $curdir;
  $r->print (" (<a href=\"javascript:openWindow('".$filelink.".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; TARGET=_self>metadata</a>) ") if ($metafile == 1);      $anchor =~ s/\W//g;
       $r->print ('<input type="hidden" name="acts" value="" />');
  $r->print("</td>\n");      $r->print ('<a name="'.$anchor.'"></a><input src="'.$iconpath.
  $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",$filecom[8]," </td>\n")          'folder_pointer_'.$diropen.'.gif"');
     if $hash{'display_attrs_0'} == 1;      $r->print (' name="'.$msg.'" type="image" class="LC_indexer_icon" />'.
  $r->print("<td bgcolor=$fileclr valign=bottom> ".(localtime($filecom[9]))." </td>\n")          "\n");
    }
   # Filetype icons
    $r->print("<img alt=\"\" src='$iconname' class='LC_icon' />\n");
    my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
   
    $r->print (" <a href=\"javascript:openWindow('".$quotable_filelink.
      "?inhibitmenu=yes','previewfile','450','500','no','yes','yes');\"".
      " target=\"_self\">$listname</a> ");
    $quotable_filelink = &Apache::loncommon::escape_single($filelink.'.meta');
    &Apache::loncommon::inhibit_menu_check(\$quotable_filelink);
    $r->print (" (<a href=\"javascript:openWindow('".$quotable_filelink.
      "?inhibitmenu=yes','metadatafile','500','550','no','yes','no');\" ".
      " target=\"_self\">".&mt('metadata')."</a>) ");
   # Close form to open/close sequence
    if ($filelink=~/\.(page|sequence)$/) {
       $r->print('</form>');
    }
    $r->print("</span></td>\n");
    if ($hash{'display_attrs_0'} == 1) {
       $r->print('<td> '.($title eq '' ? '&nbsp;' : $title).
         ' </td>'."\n");
    }
    $r->print('<td align="right"> ',
     $filecom[8]," </td>\n") 
     if $hash{'display_attrs_1'} == 1;      if $hash{'display_attrs_1'} == 1;
  $r->print("<td bgcolor=$fileclr valign=bottom> ".(localtime($filecom[10]))." </td>\n")    $r->print('<td> '.
                     (&Apache::lonlocal::locallocaltime($filecom[9]))." </td>\n")
     if $hash{'display_attrs_2'} == 1;      if $hash{'display_attrs_2'} == 1;
    $r->print('<td> '.
                     (&Apache::lonlocal::locallocaltime($filecom[10]))." </td>\n")
       if $hash{'display_attrs_3'} == 1;
   
  if ($hash{'display_attrs_3'} == 1) {  
     my $author = &Apache::lonnet::metadata($filelink,'author') if ($metafile == 1);  
     $author = '&nbsp;' if (!$author);  
     $r->print("<td bgcolor=$fileclr valign=bottom> ".$author." </td>\n");  
  }  
  if ($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);      $r->print('<td> '.($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
    $r->print("<td>&nbsp;</td>\n");
       }
    }
    if ($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);
              $r->print('<td> '.($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("</tr>\n");   $r->print("</tr>\n");
     }      }
   
 # -- 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>");   $r->print("<tr bgcolor=\"$fileclr\">$extrafield<td valign=$valign>");
  &begin_form ($r,$curdir);   &begin_form ($r,$curdir);
  my $indentm1 = $indent-1;   my $indentm1 = $indent-1;
  if ($indentm1 < 11 and $indentm1 > 0) {   if ($indentm1 < 16 and $indentm1 > 0) {
     $r->print("<img src=",$iconpath,"whitespace",$indentm1,".gif border=0>\n");      $r->print("<img alt=\"\" src=",$iconpath,"whitespace",$indentm1,
         ".gif class='LC_icon' />\n");
  } else {   } else {
     my $ten = int($indentm1/10.);      my $ten = int($indentm1/10.);
     my $rem = $indentm1%10.0;      my $rem = $indentm1%10.0;
     my $count = 0;      my $count = 0;
     while ($count < $ten) {      while ($count < $ten) {
  $r->print ("<img src=",$iconpath,"whitespace10.gif border=0>\n");   $r->print ("<img alt=\"\" src=",$iconpath
      ,"whitespace10.gif class='LC_icon' />\n");
  $count++;   $count++;
     }      }
     $r->print ("<img src=",$iconpath,"whitespace",$rem,".gif border=0>\n") if $rem > 0;      $r->print ("<img alt=\"\" src=",$iconpath,"whitespace",$rem,
          ".gif class='LC_icon' />\n") if $rem > 0;
    }
    $r->print ('<input type="hidden" name="acts" value="" />');
    $r->print ('<a name="'.$anchor.'"></a><input src="'.$iconpath.
      'folder_pointer_'.$diropen.'.gif"');
    $r->print (' name="'.$msg.'" type="image" class="LC_indexer_icon" />'.
      "\n");
    my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
    $r->print ('<a href="javascript:gothere(\''
      .$quotable_curdir.'\')">'
      .'<img alt="'.&mt('Open Folder').'"src="'.
      $iconpath.'folder_'.$diropen.'.gif" class="LC_icon" /></a>'.
      "\n");
    $r->print ("$listname</form></td>\n");
   # 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 align=right> ',
     $filecom[8]," </td>\n") 
       if $hash{'display_attrs_1'} == 1;
    $r->print('<td> '.
                     (&Apache::lonlocal::locallocaltime($filecom[9]))." </td>\n")
       if $hash{'display_attrs_2'} == 1;
    $r->print('<td> '.
                     (&Apache::lonlocal::locallocaltime($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");
  }   }
  $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.'folder_pointer_'.$diropen.'.gif"');   if ($hash{'display_attrs_8'} == 1) {
  $r->print (' name="'.$msg.'" height="22" type="image" border="0">'."\n");     $r->print('<td>&nbsp;</td>');
  $r->print ('<a href="'.$curdir.'"><img src="'.$iconpath.'folder_'.$diropen.'.gif" border=0></a>'."\n");   }
  $r->print ("$listname$tabtag</tr></form>\n");    if ($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_12'} == 1) {
               my $subject = &Apache::lonnet::metadata($filelink,'subject');
               $r->print('<td> '.($subject eq '' ? '&nbsp;' : $subject).
                         " </td>\n");
           }
           if ($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;' : $abstract).
                         " </td>\n");
           }
           if ($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('</tr>');
       }
   
   }
   
   sub coursecontext {
       my ($r,$filelink)=@_;
       my $filesymb=&Apache::lonnet::symbread($filelink);
       if ($filesymb) {
    my ($map,$index,$resource)=&Apache::lonnet::decode_symb($filesymb);
    $r->print(&mt('Already in this course:<br />[_1] in folder/map [_2].<br />',
         &Apache::lonnet::gettitle($resource),
         &Apache::lonnet::gettitle($map)));
       }
   }
   
   sub showpreview {
       my ($filelink)=@_;
       if ($filelink=~m-^(/ext/|http://)-) {
    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);
             }
          }
          $output='<font size="-2">'.$output.'</font>';
       } 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;
     $r->print ('<form method="post" name="dirpath" action="'.$uri.'#'.$anchor.      $uri=&Apache::loncommon::escape_single($uri);
        '" enctype="application/x-www-form-urlencoded">'."\n");      $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
     $r->print ($hidden.'<input type=hidden name=openuri value="'.$uri.'">'."\n");         '#'.$anchor.
     $r->print ('<input type=hidden name=dirPointer value="on">'."\n");         '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
          ',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 BEGIN SUBROUTINE
   
   This routine is only run once after compilation.
   
   =over 4
   
   =item *
   
   Initializes %language hash table.
   
   =back
   
   =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.1.13  
changed lines
  Added in v.1.181.4.1

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