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Diff for /loncom/interface/lonsearchcat.pm between versions 1.130 and 1.199

version 1.130, 2002/06/26 16:04:13 version 1.199, 2003/12/28 20:12:59
Line 25 Line 25
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
 # YEAR=2001  
 # 3/8, 3/12, 3/13, 3/14, 3/15, 3/19 Scott Harrison  
 # 3/20, 3/21, 3/22, 3/26, 3/27, 4/2, 8/15, 8/24, 8/25 Scott Harrison  
 # 10/12,10/14,10/15,10/16,11/28,11/29,12/10,12/12,12/16 Scott Harrison  
 # YEAR=2002  
 # 1/17 Scott Harrison  
 # 6/17 Matthew Hall  
 #  
 ###############################################################################  ###############################################################################
 ###############################################################################  ###############################################################################
   
Line 40 Line 32
   
 =head1 NAME  =head1 NAME
   
 lonsearchcat  lonsearchcat - LONCAPA Search Interface
   
 =head1 SYNOPSIS  =head1 SYNOPSIS
   
Line 67  search (on a server basis) is displayed Line 59  search (on a server basis) is displayed
 ###############################################################################  ###############################################################################
 ###############################################################################  ###############################################################################
   
 ###############################################################################  
 ##                                                                           ##  
 ## ORGANIZATION OF THIS PERL MODULE                                          ##  
 ##                                                                           ##  
 ## 1. Modules used by this module                                            ##  
 ## 2. Variables used throughout the module                                   ##  
 ## 3. handler subroutine called via Apache and mod_perl                      ##  
 ## 4. Other subroutines                                                      ##  
 ##                                                                           ##  
 ###############################################################################  
   
 package Apache::lonsearchcat;  package Apache::lonsearchcat;
   
 # ------------------------------------------------- modules used by this module  
 use strict;  use strict;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common :http);
 use Apache::lonnet();  use Apache::lonnet();
 use Apache::File();  use Apache::File();
 use CGI qw(:standard);  use CGI qw(:standard);
 use Text::Query;  use Text::Query;
 use GDBM_File;  use GDBM_File;
 use Apache::loncommon();  use Apache::loncommon();
   use Apache::lonmysql();
 # ---------------------------------------- variables used throughout the module  use Apache::lonlocal;
   
 ######################################################################  
 ######################################################################  
   
 =pod   
   
 =item Global variables  
   
 =over 4  
   
 =item $closebutton  
   
 button that closes the search window  
   
 =item $importbutton  
   
 button to take the selecte results and go to group sorting  
   
 =item %hash     
   
 The ubiquitous database hash  
   
 =item $diropendb   
   
 The full path to the (temporary) search database file.  This is set and  
 used in &handler() and is also used in &output_results().  
   
 =back   
   
 =cut  
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
   ##
   ## Global variables
   ##
   ######################################################################
   ######################################################################
   my %groupsearch_db;  # Database hash used to save values for the 
                        # groupsearch RAT interface.
   my %persistent_db;   # gdbm hash which holds data which is supposed to
                        # persist across calls to lonsearchcat.pm
   ## %Views:
   ## Hash which associates an output view description with the function
   ## that produces it.
   #             View Description/Name      Function Pointer
   my %Views = ("Detailed Citation View" => \&detailed_citation_view,
                "Summary View"           => \&summary_view,
                "Fielded Format"         => \&fielded_format_view,
                "XML/SGML"               => \&xml_sgml_view,
                "Compact View"           => \&compact_view);
   
 # -- dynamically rendered interface components  
 my $closebutton;  # button that closes the search window  
 my $importbutton; # button to take the selected results and go to group sorting  
   
 # -- miscellaneous variables  
 my %hash;     # database hash  
 my $diropendb = "";    # db file  
   
 ######################################################################  
 ######################################################################  
   
 =pod   
   
 =item &handler() - main handler invoked by httpd child  
   
 =item Variables  
   
 =over 4  
   
 =item $hidden  
   
 holds 'hidden' html forms  
   
 =item $scrout  
   
 string that holds portions of the screen output  
   
 =back   
   
 =cut  
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
     untie %hash;  #    &set_defaults();
       #
     $r->content_type('text/html');      # set form defaults
       #
       my $hidden_fields;# Hold all the hidden fields used to keep track
                         # of the search system state
       my $importbutton; # button to take the selected results and go to group 
                         # sorting
       my $diropendb;    # The full path to the (temporary) search database file.
                         # This is set and used in &handler() and is also used in 
                         # &output_results().
       my $bodytag;  # LON-CAPA standard body tag, gotten from 
                     # &Apache::lonnet::bodytag. 
                     # No title, no table, just a <body> tag.
   
       my $loaderror=&Apache::lonnet::overloaderror($r);
       if ($loaderror) { return $loaderror; }
   
       my $closebutton;  # button that closes the search window 
                         # This button is different for the RAT compared to
                         # normal invocation.
       #
       &Apache::loncommon::content_type($r,'text/html');
     $r->send_http_header;      $r->send_http_header;
     return OK if $r->header_only;      return OK if $r->header_only;
       ##
     my $domain  = $r->dir_config('lonDefDomain');      ## Prevent caching of the search interface window.  Hopefully this means
     $diropendb= "/home/httpd/perl/tmp/".&Apache::lonnet::escape($domain).      ## we will get the launch=1 passed in a little more.
             "\_".&Apache::lonnet::escape($ENV{'user.name'})."_searchcat.db";      &Apache::loncommon::no_cache($r);
       ## 
       ## Pick up form fields passed in the links.
       ##
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},      &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
              ['catalogmode','launch','acts','mode','form','element',               ['catalogmode','launch','acts','mode','form','element','pause',
               'reqinterface']);                'phase','persistent_db_id','table','start','show',
                 'cleargroupsort','titleelement']);
       ##
       ## The following is a trick - we wait a few seconds if asked to so
       ##     the daemon running the search can get ahead of the daemon
       ##     printing the results.  We only need (theoretically) to do
       ##     this once, so the pause indicator is deleted
       ##
       if (exists($ENV{'form.pause'})) {
           sleep(1);
           delete($ENV{'form.pause'});
       }
       ##
       ## Initialize global variables
       ##
       my $domain  = $r->dir_config('lonDefDomain');
       $diropendb= "/home/httpd/perl/tmp/$ENV{'user.domain'}_$ENV{'user.name'}_searchcat.db";
       #
       # set the name of the persistent database
       #          $ENV{'form.persistent_db_id'} can only have digits in it.
       if (! exists($ENV{'form.persistent_db_id'}) ||
           ($ENV{'form.persistent_db_id'} =~ /\D/) ||
           ($ENV{'form.launch'} eq '1')) {
           $ENV{'form.persistent_db_id'} = time;
       }
       $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
       my $persistent_db_file = "/home/httpd/perl/tmp/".
           &Apache::lonnet::escape($domain).
               '_'.&Apache::lonnet::escape($ENV{'user.name'}).
                   '_'.$ENV{'form.persistent_db_id'}.'_persistent_search.db';
       ##
       if (! &get_persistent_form_data($persistent_db_file)) {
           if ($ENV{'form.phase'} =~ /(run_search|results)/) {
               &Apache::lonnet::logthis("lonsearchcat:Unable to recover data ".
                                        "from $persistent_db_file");
               $r->print(<<END);
   <html>
   <head><title>LON-CAPA Search Error</title></head>
   $bodytag
   We were unable to retrieve data describing your search.  This is a serious
   error and has been logged.  Please alert your LON-CAPA administrator.
   </body>
   </html>
   END
               return OK;
           }
       }
     ##      ##
     ## Clear out old values from database      ## Clear out old values from groupsearch database
     ##      ##
     if ($ENV{'form.launch'} eq '1') {      untie %groupsearch_db if (tied(%groupsearch_db));
  if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {      if (($ENV{'form.cleargroupsort'} eq '1') || 
           (($ENV{'form.launch'} eq '1') && 
            ($ENV{'form.catalogmode'} eq 'groupsearch'))) {
    if (tie(%groupsearch_db,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
     &start_fresh_session();      &start_fresh_session();
     untie %hash;      untie %groupsearch_db;
               delete($ENV{'form.cleargroupsort'});
  } else {   } else {
     $r->print('<html><head></head><body>Unable to tie hash to db '.              # This is a stupid error to give to the user.  
       'file</body></html>');              # It really tells them nothing.
       $r->print('<html><head></head>'.$bodytag.
                         'Unable to tie hash to db file</body></html>');
     return OK;      return OK;
  }   }
     }      }
     ##      ##
     ## Produce some output, so people know it is working      ## Configure hidden fields
     ##      ##
     $r->print("\n");      $hidden_fields = '<input type="hidden" name="persistent_db_id" value="'.
     $r->rflush;          $ENV{'form.persistent_db_id'}.'" />'."\n";
       if (exists($ENV{'form.catalogmode'})) {
           $hidden_fields .= '<input type="hidden" name="catalogmode" value="'.
                   $ENV{'form.catalogmode'}.'" />'."\n";
       }
       if (exists($ENV{'form.form'})) {
           $hidden_fields .= '<input type="hidden" name="form" value="'.
                   $ENV{'form.form'}.'" />'."\n";
       }
       if (exists($ENV{'form.element'})) {
           $hidden_fields .= '<input type="hidden" name="element" value="'.
                   $ENV{'form.element'}.'" />'."\n";
       }
       if (exists($ENV{'form.titleelement'})) {
           $hidden_fields .= '<input type="hidden" name="titleelement" value="'.
                   $ENV{'form.titleelement'}.'" />'."\n";
       }
       if (exists($ENV{'form.mode'})) {
           $hidden_fields .= '<input type="hidden" name="mode" value="'.
                   $ENV{'form.mode'}.'" />'."\n";
       }
     ##      ##
     ## Configure dynamic components of interface      ## Configure dynamic components of interface
     ##      ##
     my $hidden;       # Holds 'hidden' html forms  
     if ($ENV{'form.catalogmode'} eq 'interactive') {      if ($ENV{'form.catalogmode'} eq 'interactive') {
  $hidden="<input type='hidden' name='catalogmode' value='interactive'>".          $closebutton="<input type='button' name='close' value='CLOSE' ";
     "\n";          if ($ENV{'form.phase'} =~ /(results|run_search)/) {
         $closebutton="<input type='button' name='close' value='CLOSE' ".      $closebutton .="onClick='parent.close()'";
     "onClick='self.close()'>"."\n";          } else {
               $closebutton .="onClick='self.close()'";
           }
           $closebutton .=">\n";
     } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {      } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
  $hidden=<<END;          $closebutton="<input type='button' name='close' value='CLOSE' ";
 <input type='hidden' name='catalogmode' value='groupsearch'>          if ($ENV{'form.phase'} =~ /(results|run_search)/) {
 END      $closebutton .="onClick='parent.close()'";
         $closebutton=<<END;          } else {
 <input type='button' name='close' value='CLOSE' onClick='self.close()'>              $closebutton .="onClick='self.close()'";
 END          }
           $closebutton .= ">";
         $importbutton=<<END;          $importbutton=<<END;
 <input type='button' name='import' value='IMPORT'  <input type='button' name='import' value='IMPORT'
 onClick='javascript:select_group()'>  onClick='javascript:select_group()'>
 END  END
       } else {
           $closebutton = '';
           $importbutton = '';
     }      }
     $hidden .= <<END;      ##
 <input type='hidden' name='mode'    value='$ENV{'form.mode'}'>      ## Sanity checks on form elements
 <input type='hidden' name='form'    value='$ENV{'form.form'}'>      ##
 <input type='hidden' name='element' value='$ENV{'form.element'}'>      if (!defined($ENV{'form.viewselect'})) {
 <input type='hidden' name='date' value='2'>          if (($ENV{'form.catalogmode'} eq 'groupsearch') ||
 END              ($ENV{'form.catalogmode'} eq 'interactive')) {
     ##              $ENV{'form.viewselect'} ="Compact View";
     ##  What are we doing?          } else {
     ##              $ENV{'form.viewselect'} ="Detailed Citation View";
     if ($ENV{'form.basicsubmit'} eq 'SEARCH') {          }
         # Perform basic search and give results      }
  return &basicsearch($r,$hidden);      $ENV{'form.phase'} = 'disp_basic' if (! exists($ENV{'form.phase'}));
     } elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') {      $ENV{'form.show'} = 20 if (! exists($ENV{'form.show'}));
         # Perform advanced search and give results      ##
  return &advancedsearch($r,$hidden);      ## Switch on the phase
     } elsif ($ENV{'form.reqinterface'} eq 'advanced') {      ##
         # Output the advanced interface      if ($ENV{'form.phase'} eq 'disp_basic') {
         $r->print(&advanced_search_form($closebutton,$hidden));          &print_basic_search_form($r,$closebutton,$hidden_fields);
         return OK;      } elsif ($ENV{'form.phase'} eq 'disp_adv') {
     } else {           &print_advanced_search_form($r,$closebutton,$hidden_fields);
         # Output normal search interface      } elsif ($ENV{'form.phase'} eq 'results') {
         $r->print(&basic_search_form($closebutton,$hidden));          &display_results($r,$importbutton,$closebutton,$diropendb);
       } elsif ($ENV{'form.phase'} =~ /^(sort|run_search)$/) {
           my ($query,$customquery,$customshow,$libraries,$pretty_string) =
               &get_persistent_data($persistent_db_file,
                    ['query','customquery','customshow',
                     'libraries','pretty_string']);
           if ($ENV{'form.phase'} eq 'sort') {
               &print_sort_form($r,$pretty_string);
           } elsif ($ENV{'form.phase'} eq 'run_search') {
               &run_search($r,$query,$customquery,$customshow,
                           $libraries,$pretty_string);
           }
       } elsif ($ENV{'form.phase'} eq 'course_search') {
           &course_search($r);
       } elsif(($ENV{'form.phase'} eq 'basic_search') ||
               ($ENV{'form.phase'} eq 'adv_search')) {
           $ENV{'form.searchmode'} = 'basic';
           if ($ENV{'form.phase'} eq 'adv_search') {
               $ENV{'form.searchmode'} = 'advanced';
           }
           # Set up table
           if (! defined(&create_results_table())) {
       my $errorstring=&Apache::lonmysql::get_error();
               $r->print(<<END);
   <html><head><title>Search Error</title></head>
   $bodytag
   Unable to create table in which to store search results.  
   The search has been aborted.
   <br />$errorstring
   </body>
   </html>
   END
               return OK;
           }
           delete($ENV{'form.launch'});
           if (! &make_form_data_persistent($r,$persistent_db_file)) {
               $r->print(<<END);
   <html><head><title>Search Error</title></head>
   $bodytag
   Unable to properly store search information.  The search has been aborted.
   </body>
   </html>
   END
               return OK;
           }
           #
           # We are running a search
           my ($query,$customquery,$customshow,$libraries) = 
               (undef,undef,undef,undef);
           my $pretty_string;
           if ($ENV{'form.phase'} eq 'basic_search') {
               ($query,$pretty_string,$libraries) = 
                   &parse_basic_search($r,$closebutton,$hidden_fields);
           } else {                      # Advanced search
               ($query,$customquery,$customshow,$libraries,$pretty_string) 
                   = &parse_advanced_search($r,$closebutton,$hidden_fields);
               return OK if (! defined($query));
           }
           &make_persistent({ query => $query,
                              customquery => $customquery,
                              customshow => $customshow,
                              libraries => $libraries,
                              pretty_string => $pretty_string },
                            $persistent_db_file);
           ##
           ## Print out the frames interface
           ##
           &print_frames_interface($r);
     }      }
     return OK;      return OK;
 }   } 
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
   ##
   ##   Course Search
   ##
   ######################################################################
   ######################################################################
   {   # Scope the course search to avoid global variables
   #
   # Variables For course search
   my %alreadyseen;
   my %hash;
   my $totalfound;
   
   sub course_search {
       my $r=shift;
       my $bodytag=&Apache::loncommon::bodytag('Course Search');
       my $pretty_search_string = '<b>'.$ENV{'form.courseexp'}.'</b>';
       my $search_string = $ENV{'form.courseexp'};
       my @New_Words;
       if ($ENV{'form.crsrelated'}) {
           ($search_string,@New_Words) = &related_version($ENV{'form.courseexp'});
           if (@New_Words) {
               $pretty_search_string .= " with related words: <b>@New_Words</b>.";
           } else {
               $pretty_search_string .= " with no related words.";
           }
       }
       my $fulltext=$ENV{'form.crsfulltext'};
       my @allwords=($search_string,@New_Words);
       $totalfound=0;
       $r->print('<html><head><title>LON-CAPA Course Search</title></head>'.
         $bodytag.$pretty_search_string);
       $r->rflush();
   # ======================================================= Go through the course
       undef %alreadyseen;
       %alreadyseen=();
       my $c=$r->connection;
       if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.".db",
               &GDBM_READER(),0640)) {
           foreach (keys %hash) {
               if ($c->aborted()) { last; }
               if (($_=~/^src\_(.+)$/) && (!$alreadyseen{$hash{$_}})) {
                   &checkonthis($r,$hash{$_},0,$hash{'title_'.$1},$fulltext,
                                @allwords);
               }
           }
           untie(%hash);
       }
       unless ($totalfound) {
    $r->print('<p>'.&mt('No resources found').'.</p>');
       }
   # =================================================== Done going through course
       $r->print('</body></html>');
   }
   
   # =============================== This pulls up a resource and its dependencies
   
   sub checkonthis {
       my ($r,$url,$level,$title,$fulltext,@allwords)=@_;
       $alreadyseen{$url}=1;
       $r->rflush();
       my $result=&Apache::lonnet::metadata($url,'title').' '.
                  &Apache::lonnet::metadata($url,'subject').' '.
                  &Apache::lonnet::metadata($url,'abstract').' '.
                  &Apache::lonnet::metadata($url,'keywords');
       if (($url) && ($fulltext)) {
    $result.=&Apache::lonnet::ssi_body($url);
       }
       $result=~s/\s+/ /gs;
       my $applies=0;
       foreach (@allwords) {
           if ($_=~/\w/) {
      if ($result=~/$_/si) {
         $applies++;
              }
          }
       }
   # Does this resource apply?
       if ($applies) {
          $r->print('<br />');
          for (my $i=0;$i<=$level*5;$i++) {
              $r->print('&nbsp;');
          }
          $r->print('<a href="'.$url.'" target="cat">'.
    ($title?$title:$url).'</a><br />');
          $totalfound++;
       } elsif ($fulltext) {
          $r->print(' .');
       }
       $r->rflush();
   # Check also the dependencies of this one
       my $dependencies=
                   &Apache::lonnet::metadata($url,'dependencies');
       foreach (split(/\,/,$dependencies)) {
          if (($_=~/^\/res\//) && (!$alreadyseen{$_})) {
             &checkonthis($r,$_,$level+1,'',$fulltext,@allwords);
          }
       }
   }
   
   sub untiehash {
       if (tied(%hash)) {
           untie(%hash);
       }
   }
   
   } # End of course search scoping
   
   ######################################################################
   ######################################################################
   
 =pod   =pod 
   
 =item &basic_search_form()   =item &print_basic_search_form() 
   
 Returns a scalar which holds html for the basic search form.  Returns a scalar which holds html for the basic search form.
   
Line 252  Returns a scalar which holds html for th Line 466  Returns a scalar which holds html for th
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
   
 sub basic_search_form{  sub print_basic_search_form{
     my ($closebutton,$hidden) = @_;      my ($r,$closebutton,$hidden_fields) = @_;
       my $bodytag=&Apache::loncommon::bodytag('Search');
     my $scrout=<<"ENDDOCUMENT";      my $scrout=<<"ENDDOCUMENT";
 <html>  <html>
 <head>  <head>
Line 266  sub basic_search_form{ Line 481  sub basic_search_form{
     }      }
 </script>  </script>
 </head>  </head>
 <body bgcolor="#FFFFFF">  $bodytag
 <img align='right' src='/adm/lonIcons/lonlogos.gif' />  ENDDOCUMENT
 <h1>Search Catalog</h1>  if (&Apache::lonnet::allowed('bre',$ENV{'request.role.domain'})) {
 <form method="post" action="/adm/searchcat">      my $CatalogSearch=&mt('Catalog Search');
 $hidden      my $Statement=&mt('Enter terms or phrases separated by AND, OR, or NOT then press SEARCH below');
 <h3>Basic Search</h3>      $scrout.=(<<ENDDOCUMENT);
   <h1>$CatalogSearch</h1>
   <form name="loncapa_search" method="post" action="/adm/searchcat">
   <input type="hidden" name="phase" value="basic_search" />
   $hidden_fields
 <p>  <p>
 Enter terms or quoted phrases separated by AND, OR, or NOT   $Statement.
 then press SEARCH below.  
 </p>  </p>
 <p>  <p>
 <table>  <table>
Line 282  then press SEARCH below. Line 500  then press SEARCH below.
 ENDDOCUMENT  ENDDOCUMENT
     $scrout.='&nbsp;'.&simpletextfield('basicexp',$ENV{'form.basicexp'},40).      $scrout.='&nbsp;'.&simpletextfield('basicexp',$ENV{'form.basicexp'},40).
         '&nbsp;';          '&nbsp;';
 #    $scrout.=&simplecheckbox('allversions',$ENV{'form.allversions'});      my $relatedcheckbox = &simplecheckbox('related','related',$ENV{'form.related'});
 #    $scrout.='<font color="#800000">Search historic archives</font>';      my $domain = $r->dir_config('lonDefDomain');
     $scrout.=<<ENDDOCUMENT;      my $domaincheckbox = &simplecheckbox('domains',$domain);
 </td><td><a href="/adm/searchcat?reqinterface=advanced">Advanced Search</a></td></tr></table>      my $srch=&mt('Search');
       my $header=&mt('Advanced Search');
       my $userelatedwords=&mt('use related words');
       my $onlysearchdomain=&mt('only search domain');
       $scrout.=<<END;
   </td><td><a
   href="/adm/searchcat?phase=disp_adv&catalogmode=$ENV{'form.catalogmode'}&launch=$ENV{'form.launch'}&mode=$ENV{'form.mode'}"
   >$header</a></td></tr>
   <tr><td>$relatedcheckbox $userelatedwords</td>
       <td>$domaincheckbox $onlysearchdomain <b>$domain</b></td></tr>
   </table>
 </p>  </p>
 <p>  <p>
 &nbsp;<input type="submit" name="basicsubmit" value='SEARCH' />&nbsp;  &nbsp;<input type="submit" name="basicsubmit" value='$srch' />&nbsp;
 $closebutton  $closebutton
 <!-- view selection -->  END
 <select name="viewselect">      $scrout.=&selectbox('View','viewselect',
 <option value="Detailed Citation View" selected="true" >Detailed Citation View</option>   $ENV{'form.viewselect'},
 <option value="Summary View"  >Summary View</option>   undef,undef,undef,
 <option value="Fielded Format">Fielded Format</option>   sort(keys(%Views)));
 <option value="XML/SGML"      >XML/SGML</option>      $scrout.=&selectbox('Per Page','show',
 </select>   $ENV{'form.show'},
 <!-- end of view selection -->   undef,undef,undef,
 <input type="button" value="HELP" onClick="openhelp()" />   (10,20,50,100));
       $scrout.=<<ENDDOCUMENT;
 </p>  </p>
 </form>  </form>
   ENDDOCUMENT
       }
       if ($ENV{'request.course.id'}) {
    my %lt=&Apache::lonlocal::texthash(
      'srch' => 'Search',
                                              'header' => 'Course Search',
    'note' => 'Enter terms or phrases, then press "Search" below',
      );
           $scrout.=(<<ENDCOURSESEARCH);
   <hr />
   <h1>$lt{'header'}</h1>    
   <form name="course_search" method="post" action="/adm/searchcat">
   <input type="hidden" name="phase" value="course_search" />
   $hidden_fields
   <p>
   $lt{'note'}.
   </p>
   <p>
   <table>
   <tr><td>
   ENDCOURSESEARCH
           $scrout.='&nbsp;'.
               &simpletextfield('courseexp',$ENV{'form.courseexp'},40);
           my $crscheckbox = 
               &simplecheckbox('crsfulltext',$ENV{'form.crsfulltext'});
           my $relcheckbox = 
               &simplecheckbox('crsrelated',$ENV{'form.crsrelated'});
           $scrout.=(<<ENDENDCOURSE);
   </td></tr>
   <tr><td>$relcheckbox use related words</td><td></td></tr>
   <tr><td>$crscheckbox fulltext search (time consuming)</td><td></td></tr>
   </table><p>
   &nbsp;<input type="submit" name="coursesubmit" value='$lt{'srch'}' />
   </p>
   ENDENDCOURSE
       }
       $scrout.=(<<ENDDOCUMENT);
 </body>  </body>
 </html>  </html>
 ENDDOCUMENT  ENDDOCUMENT
     return $scrout;      $r->print($scrout);
       return;
 }  }
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
Line 320  Returns a scalar which holds html for th Line 587  Returns a scalar which holds html for th
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
   
 sub advanced_search_form{  sub print_advanced_search_form{
     my ($closebutton,$hidden) = @_;      my ($r,$closebutton,$hidden_fields) = @_;
     my $advanced_buttons = <<"END";      my $advanced_buttons = <<"END";
 <p>  <p>
 <input type="submit" name="advancedsubmit" value='SEARCH' />  <input type="submit" name="advancedsubmit" value='SEARCH' />
Line 330  $closebutton Line 597  $closebutton
 <input type="button" value="HELP" onClick="openhelp()" />  <input type="button" value="HELP" onClick="openhelp()" />
 </p>  </p>
 END  END
       if (!defined($ENV{'form.viewselect'})) {
           $ENV{'form.viewselect'} ="Detailed Citation View";
       }
       my $bodytag=&Apache::loncommon::bodytag('Advanced Catalog Search');
     my $scrout=<<"ENDHEADER";      my $scrout=<<"ENDHEADER";
 <html>  <html>
 <head>  <head>
Line 342  END Line 613  END
     }      }
 </script>  </script>
 </head>  </head>
 <body bgcolor="#FFFFFF">  $bodytag
 <img align='right' src='/adm/lonIcons/lonlogos.gif' />  Enter terms or phrases separated by search operators 
 <h1>Advanced Catalog Search</h1>  
 <hr />  
 Enter terms or quoted phrases separated by search operators   
 such as AND, OR, or NOT.<br />  such as AND, OR, or NOT.<br />
 <form method="post" action="/adm/searchcat">  <form method="post" action="/adm/searchcat">
 $advanced_buttons  $advanced_buttons
 $hidden  $hidden_fields
   <input type="hidden" name="phase" value="adv_search" />
 <table>  <table>
 <tr><td><font color="#800000" face="helvetica"><b>VIEW:</b></font></td>  <tr><td><font color="#800000" face="helvetica"><b>VIEW:</b></font></td>
 <td>  <td>
 <!-- view selection -->  
 <select name="viewselect" size ="1">  
     <option value="Detailed Citation View" selected="true">Detailed Citation View</option>  
     <option value="Summary View">Summary View</option>  
     <option value="Fielded Format">Fielded Format</option>  
     <option value="XML/SGML">XML/SGML</option>  
 </select>  
 <!-- end of view selection -->  
 </td></tr>  
 ENDHEADER  ENDHEADER
     $scrout.=&searchphrasefield('title','title',      $scrout.=&selectbox(undef,'viewselect',
  $ENV{'form.title'});   $ENV{'form.viewselect'},
     $scrout.=&searchphrasefield('author','author',   undef,undef,undef,
  $ENV{'form.author'});   sort(keys(%Views)));
     $scrout.=&searchphrasefield('subject','subject',      $scrout.='&nbsp;';
  $ENV{'form.subject'});      $scrout.=&selectbox(undef,'show',
     $scrout.=&searchphrasefield('keywords','keywords',   $ENV{'form.show'},
  $ENV{'form.keywords'});   undef,undef,undef,
     $scrout.=&searchphrasefield('URL','url',   (10,20,50,100));
  $ENV{'form.url'});      $scrout.='&nbsp;'.
 #    $scrout.=&searchphrasefield('Limit by version','version',          '<font color="#800000" face="helvetica">'.&mt('Per Page').'</font>';
 # $ENV{'form.version'});      $scrout.="</td><td>".&mt('Related').'<br />'.&mt('Words')."</td></tr>\n";
     $scrout.=&searchphrasefield('notes','notes',      $scrout.=&searchphrasefield_with_related('title',   'title'   ,
  $ENV{'form.notes'});                                               $ENV{'form.title'});
     $scrout.=&searchphrasefield('abstract','abstract',      $scrout.=&searchphrasefield('author',  'author'  ,$ENV{'form.author'});
  $ENV{'form.abstract'});      $scrout.=&searchphrasefield_with_related('subject', 'subject' ,
                                                $ENV{'form.subject'});
       $scrout.=&searchphrasefield_with_related('keywords','keywords',
                                                $ENV{'form.keywords'});
       $scrout.=&searchphrasefield('URL',     'url'     ,$ENV{'form.url'});
       $scrout.=&searchphrasefield_with_related('notes',   'notes'   ,
                                                $ENV{'form.notes'});
       $scrout.=&searchphrasefield_with_related('abstract','abstract',
                                                $ENV{'form.abstract'});
       $scrout.=&searchphrasefield('Standards','standards',$ENV{'form.standards'});
     # Hack - an empty table row.      # Hack - an empty table row.
     $scrout.="<tr><td>&nbsp;</td><td>&nbsp;</td></tr>\n";      $scrout.="<tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>\n";
     $scrout.=&searchphrasefield('file<br />extension','mime',      $scrout.=&searchphrasefield('file<br />extension','extension',
                         $ENV{'form.mime'});                          $ENV{'form.extension'});
     $scrout.="<tr><td>&nbsp;</td><td>&nbsp;</td></tr>\n";      $scrout.="<tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>\n";
     $scrout.=&searchphrasefield('publisher<br />owner','owner',      $scrout.=&searchphrasefield('publisher<br />owner','owner',
  $ENV{'form.owner'});   $ENV{'form.owner'});
     $scrout.="</table>\n";      $scrout.="</table>\n";
 #    $ENV{'form.mime'}='any' unless length($ENV{'form.mime'});      $ENV{'form.category'}='any' if (! defined($ENV{'form.category'}));
 #    $scrout.=&selectbox('Limit by MIME type','mime',      $scrout.=&selectbox('File Category','category',
 # $ENV{'form.mime'},   $ENV{'form.category'},
 # 'any','Any type',   'any','Any category',
 # \&{Apache::loncommon::filedescriptionex},   undef,
 # (&Apache::loncommon::fileextensions));   (&Apache::loncommon::filecategories()));
     $ENV{'form.language'}='any' unless length($ENV{'form.language'});      $ENV{'form.language'}='any' unless length($ENV{'form.language'});
       #----------------------------------------------------------------
       # Allow restriction to multiple domains.
       #   I make the crazy assumption that there will never be a domain 'any'.
       #
       $ENV{'form.domains'} = 'any' if (! exists($ENV{'form.domains'}));
       my @allowed_domains = (ref($ENV{'form.domains'}) ? @{$ENV{'form.domains'}} 
                              :  ($ENV{'form.domains'}) );
       my %domain_hash = ();
       foreach (@allowed_domains) {
           $domain_hash{$_}++;
       }
       my @domains =&Apache::loncommon::get_domains();
       # adjust the size of the select box
       my $size = 4;
       $size = (scalar @domains < ($size - 1) ? scalar @domains + 1 : $size);
       $scrout.="\n".'<font color="#800000" face="helvetica"><b>'.
           'DOMAINS TO BE SEARCHED</b></font><br />'.
               '<select name="domains" size="'.$size.'" multiple>'."\n".
                   '<option name="any" value="any" '.
                       ($domain_hash{'any'}? 'selected ' :'').
                           '>all domains</option>'."\n";
       foreach my $dom (sort @domains) {
           $scrout.="<option name=\"$dom\" ".
               ($domain_hash{$dom} ? 'selected ' :'').">$dom</option>\n";
       }
       $scrout.="</select>\n";
       #----------------------------------------------------------------
     $scrout.=&selectbox('Limit by language','language',      $scrout.=&selectbox('Limit by language','language',
  $ENV{'form.language'},'any','Any Language',   $ENV{'form.language'},'any','Any Language',
  \&{Apache::loncommon::languagedescription},   \&Apache::loncommon::languagedescription,
  (&Apache::loncommon::languageids),   (&Apache::loncommon::languageids),
  );   );
 # ------------------------------------------------ Compute date selection boxes  # ------------------------------------------------ Compute date selection boxes
Line 444  LASTREVISIONDATEEND Line 740  LASTREVISIONDATEEND
     $scrout.=&selectbox('Limit by copyright/distribution','copyright',      $scrout.=&selectbox('Limit by copyright/distribution','copyright',
  $ENV{'form.copyright'},   $ENV{'form.copyright'},
  'any','Any copyright/distribution',   'any','Any copyright/distribution',
  \&{Apache::loncommon::copyrightdescription},   \&Apache::loncommon::copyrightdescription,
  (&Apache::loncommon::copyrightids),   (&Apache::loncommon::copyrightids),
  );   );
 # ------------------------------------------- Compute customized metadata field  # ------------------------------------------- Compute customized metadata field
     $scrout.=<<CUSTOMMETADATA;  #    $scrout.=<<CUSTOMMETADATA;
 <p>  #<p>
 <font color="#800000" face="helvetica"><b>LIMIT BY SPECIAL METADATA FIELDS:</b>  #<font color="#800000" face="helvetica"><b>LIMIT BY SPECIAL METADATA FIELDS:</b>
 </font>  #</font>
 For resource-specific metadata, enter in an expression in the form of   #For resource-specific metadata, enter in an expression in the form of 
 <i>key</i>=<i>value</i> separated by operators such as AND, OR or NOT.<br />  #<i>key</i>=<i>value</i> separated by operators such as AND, OR or NOT.<br />
 <b>Example:</b> grandmother=75 OR grandfather=85  #<b>Example:</b> grandmother=75 OR grandfather=85
 <br />  #<br />
 CUSTOMMETADATA  #CUSTOMMETADATA
     $scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});  #    $scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});
     $scrout.=<<CUSTOMSHOW;  #    $scrout.=<<CUSTOMSHOW;
 <p>  #<p>
 <font color="#800000" face="helvetica"><b>SHOW SPECIAL METADATA FIELDS:</b>  #<font color="#800000" face="helvetica"><b>SHOW SPECIAL METADATA FIELDS:</b>
 </font>  #</font>
 Enter in a space-separated list of special metadata fields to show  #Enter in a space-separated list of special metadata fields to show
 in a fielded listing for each record result.  #in a fielded listing for each record result.
 <br />  #<br />
 CUSTOMSHOW  #CUSTOMSHOW
     $scrout.=&simpletextfield('customshow',$ENV{'form.customshow'});  #    $scrout.=&simpletextfield('customshow',$ENV{'form.customshow'});
     $scrout.=<<ENDDOCUMENT;      $scrout.=<<ENDDOCUMENT;
 $advanced_buttons  $advanced_buttons
 </form>  </form>
 </body>  </body>
 </html>  </html>
 ENDDOCUMENT  ENDDOCUMENT
     return $scrout;      $r->print($scrout);
       return;
 }  }
   
 ######################################################################  ######################################################################
Line 481  ENDDOCUMENT Line 778  ENDDOCUMENT
   
 =pod   =pod 
   
 =item &make_persistent()   =item &get_persistent_form_data
   
 Returns a scalar which holds the current ENV{'form.*'} values in  Inputs: filename of database
 a 'hidden' html input tag.  This allows search interface information  
 to be somewhat persistent.  Outputs: returns undef on database errors.
   
   This function is the reverse of &make_persistent() for form data.
   Retrieve persistent data from %persistent_db.  Retrieved items will have their
   values unescaped.  If a form value already exists in $ENV, it will not be
   overwritten.  Form values that are array references may have values appended
   to them.
   
 =cut  =cut
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
   sub get_persistent_form_data {
       my $filename = shift;
       return 0 if (! -e $filename);
       return undef if (! tie(%persistent_db,'GDBM_File',$filename,
                              &GDBM_READER(),0640));
       #
       # These make sure we do not get array references printed out as 'values'.
       my %arrays_allowed = ('form.domains'=>1);
       #
       # Loop through the keys, looking for 'form.'
       foreach my $name (keys(%persistent_db)) {
           next if ($name !~ /^form./);
           # Kludgification begins!
           if ($name eq 'form.domains' && 
               $ENV{'form.searchmode'} eq 'basic' &&
               $ENV{'form.phase'} ne 'disp_basic') {
               next;
           }
           # End kludge (hopefully)
           next if (exists($ENV{$name}));
           my @values = map { 
               &Apache::lonnet::unescape($_);
           } split(',',$persistent_db{$name});
           next if (@values <1);
           if ($arrays_allowed{$name}) {
               $ENV{$name} = [@values];
           } else {
               $ENV{$name} = $values[0] if ($values[0]);
           }
       }
       untie (%persistent_db);
       return 1;
   }
   
 sub make_persistent {  ######################################################################
     my $persistent='';  ######################################################################
     foreach (keys %ENV) {  
  if (/^form\./ && !/submit/) {  =pod 
     my $name=$_;  
     my $key=$name;  =item &get_persistent_data
     $ENV{$key}=~s/\'//g; # do not mess with html field syntax  
     $name=~s/^form\.//;  Inputs: filename of database, ref to array of values to recover.
     $persistent.=<<END;  
 <input type="hidden" name="$name" value="$ENV{$key}" />  Outputs: array of values.  Returns undef on error.
 END  
   This function is the reverse of &make_persistent();
   Retrieve persistent data from %persistent_db.  Retrieved items will have their
   values unescaped.  If the item contains commas (before unescaping), the
   returned value will be an array pointer. 
   
   =cut
   
   ######################################################################
   ######################################################################
   sub get_persistent_data {
       my $filename = shift;
       my @Vars = @{shift()};
       my @Values;   # Return array
       return undef if (! -e $filename);
       return undef if (! tie(%persistent_db,'GDBM_File',$filename,
                              &GDBM_READER(),0640));
       foreach my $name (@Vars) {
           if (! exists($persistent_db{$name})) {
               push @Values, undef;
               next;
           }
           my @values = map { 
               &Apache::lonnet::unescape($_);
           } split(',',$persistent_db{$name});
           if (@values <= 1) {
               push @Values,$values[0];
           } else {
               push @Values,\@values;
         }          }
     }      }
     return $persistent;      untie (%persistent_db);
       return @Values;
 }  }
   
   ######################################################################
   ######################################################################
   
   =pod 
   
   =item &make_persistent() 
   
   Inputs: Hash of values to save, filename of persistent database.
   
   Store variables away to the %persistent_db.
   Values will be escaped.  Values that are array pointers will have their
   elements escaped and concatenated in a comma seperated string.  
   
   =cut
   
   ######################################################################
   ######################################################################
   sub make_persistent {
       my %save = %{shift()};
       my $filename = shift;
       return undef if (! tie(%persistent_db,'GDBM_File',
                              $filename,&GDBM_WRCREAT(),0640));
       foreach my $name (keys(%save)) {
           my @values = (ref($save{$name}) ? @{$save{$name}} : ($save{$name}));
           # We handle array references, but not recursively.
           my $store = join(',', map { &Apache::lonnet::escape($_); } @values );
           $persistent_db{$name} = $store;
       }
       untie(%persistent_db);
       return 1;
   }
   
   ######################################################################
   ######################################################################
   
   =pod 
   
   =item &make_form_data_persistent() 
   
   Inputs: filename of persistent database.
   
   Store most form variables away to the %persistent_db.
   Values will be escaped.  Values that are array pointers will have their
   elements escaped and concatenated in a comma seperated string.  
   
   =cut
   
   ######################################################################
   ######################################################################
   sub make_form_data_persistent {
       my $r = shift;
       my $filename = shift;
       my %save;
       foreach (keys(%ENV)) {
           next if (!/^form/ || /submit/);
           $save{$_} = $ENV{$_};
       }
       return &make_persistent(\%save,$filename);
   }
   
 ######################################################################  ######################################################################
   #                HTML form building functions                        #  
 ######################################################################  ######################################################################
   
 =pod   =pod 
Line 518  END Line 943  END
   
 =over 4  =over 4
   
   =cut
   
   ###############################################
   ###############################################
   
   =pod
   
 =item &simpletextfield()   =item &simpletextfield() 
   
 Inputs: $name,$value,$size  Inputs: $name,$value,$size
Line 525  Inputs: $name,$value,$size Line 957  Inputs: $name,$value,$size
 Returns a text input field with the given name, value, and size.    Returns a text input field with the given name, value, and size.  
 If size is not specified, a value of 20 is used.  If size is not specified, a value of 20 is used.
   
   =cut
   
   ###############################################
   ###############################################
   
   sub simpletextfield {
       my ($name,$value,$size)=@_;
       $size = 20 if (! defined($size));
       return '<input type="text" name="'.$name.
           '" size="'.$size.'" value="'.$value.'" />';
   }
   
   ###############################################
   ###############################################
   
   =pod
   
 =item &simplecheckbox()  =item &simplecheckbox()
   
 Inputs: $name,$value  Inputs: $name,$value,$checked
   
 Returns a simple check box with the given $name.  Returns a simple check box with the given $name.
 If $value eq 'on' the box is checked.  If $value eq 'on' the box is checked.
   
 =item &searchphrasefield()  =cut
   
 Inputs: $title,$name,$value  ###############################################
   ###############################################
   
 Returns html for a title line and an input field for entering search terms.  sub simplecheckbox{
 the instructions "Enter terms or phrases separated by search operators such       my ($name,$value,$checked)=@_;
 as AND, OR, or NOT." are given following the title.  The entry field (which      $checked="checked" if ($value eq $checked || $value eq 'on');
 is where the $name and $value are used) is an 80 column simpletextfield.      return '<input type="checkbox" name="'.$name.'" value="'.$value.'" '.
           $checked.' />';
   }
   
 =item &dateboxes()  ###############################################
   ###############################################
   
 Returns html selection form elements for the specification of   =pod
 the day, month, and year.  
   
 =item &selectbox()  =item &fieldtitle()
   
 Returns a scalar containing an html <select> form.    Input: $title
   
 Inputs:   Returns a scalar with html which will display $title as a search
   field heading.
   
 =over 4  =cut
   
 =item $title   ###############################################
   ###############################################
   
 Printed above the select box, in uppercase.  sub fieldtitle {
       my $title = uc(&mt(shift()));
       return '<font color="#800000" face="helvetica"><b>'.$title.
           ':&nbsp;</b></font>';
   }
   
 =item $name   ###############################################
   ###############################################
   
 The name element of the <select> tag.  =pod
   
 =item $default   =item &searchphrasefield()
   
 The default value of the form.  Can be $anyvalue or in @idlist.  Inputs: $title,$name,$value
   
 =item $anyvalue   Returns html for a title line and an input field for entering search terms.
   The entry field (which is where the $name and $value are used) is a 50 column 
   simpletextfield.  The html returned is for a row in a three column table.
   
 The <option value="..."> used to indicate a default of   =cut
 none of the values.  
   
 =item $anytag   ###############################################
   ###############################################
       
   sub searchphrasefield {
       my ($title,$name,$value)=@_;
       return '<tr><td>'.&fieldtitle($title).'</td><td>'.
           &simpletextfield($name,$value,50)."</td><td>&nbsp;</td></tr>\n";
   }
   
 The text associate with $anyvalue above.  ###############################################
   ###############################################
   
 =item $functionref   =pod
   
 Each element in @idlist will be passed as a parameter   =item &searchphrasefield_with_related()
 to the function referenced here.  The return value of the function should  
 be a scalar description of the items.  If this value is undefined the   
 description of each item in @idlist will be the item name.  
   
 =item @idlist   Inputs: $title,$name,$value
   
 The items to be selected from.  One of these or $anyvalue will be the   Returns html for a title line and an input field for entering search terms
 value returned by the form element, $ENV{form.$name}.  and a check box for 'related words'.  The entry field (which is where the 
   $name and $value are used) is a 50 column simpletextfield.  The name of
   the related words checkbox is "$name_related".
   
 =back  =cut
   
 =back   ###############################################
   ###############################################
       
   sub searchphrasefield_with_related {
       my ($title,$name,$value)=@_;
       return '<tr><td>'.&fieldtitle($title).'</td><td>'.
           &simpletextfield($name,$value,50).'</td><td align="center">&nbsp;'.
               &simplecheckbox($name.'_related',$ENV{'form.'.$name.'_related'}).
                   "&nbsp;</td></tr>\n";
   }
   
 =cut  ###############################################
   ###############################################
   
 ######################################################################  =pod
 ######################################################################  
   
 sub simpletextfield {  =item &dateboxes()
     my ($name,$value,$size)=@_;  
     $size = 20 if (! defined($size));  
     return '<input type="text" name="'.$name.  
         '" size="'.$size.'" value="'.$value.'" />';  
 }  
   
 sub simplecheckbox {  Returns html selection form elements for the specification of 
     my ($name,$value)=@_;  the day, month, and year.
     my $checked='';  
     $checked="checked" if $value eq 'on';  
     return '<input type="checkbox" name="'.$name.'" '. $checked . ' />';  
 }  
   
 sub searchphrasefield {  =cut
     my ($title,$name,$value)=@_;  
     my $uctitle=uc($title);  ###############################################
     return '<tr><td><font color="#800000" face="helvetica">'.  ###############################################
         '<b>'.$uctitle.':&nbsp;</b></font></td><td>'.  
                 &simpletextfield($name,$value,50)."</td></tr>\n";  
 }  
   
 sub dateboxes {  sub dateboxes {
     my ($name,$defaultmonth,$defaultday,$defaultyear,      my ($name,$defaultmonth,$defaultday,$defaultyear,
Line 642  END Line 1106  END
     my $i = 1;      my $i = 1;
     foreach (qw/January February March April May June       foreach (qw/January February March April May June 
      July August September October November December /){       July August September October November December /){
  $month .="<option value=\"$i\">$_</option>\n";   $month .="<option value=\"$i\">".&mt($_)."</option>\n";
  $i++;   $i++;
     }      }
     $month.="</select>\n";      $month.="</select>\n";
Line 662  END Line 1126  END
     return "$month$day$year";      return "$month$day$year";
 }  }
   
   ###############################################
   ###############################################
   
   =pod
   
   =item &selectbox()
   
   Returns a scalar containing an html <select> form.  
   
   Inputs: 
   
   =over 4
   
   =item $title 
   
   Printed above the select box, in uppercase.  If undefined, only a select
   box will be returned, with no additional html.
   
   =item $name 
   
   The name element of the <select> tag.
   
   =item $default 
   
   The default value of the form.  Can be $anyvalue, or in @idlist.
   
   =item $anyvalue 
   
   The <option value="..."> used to indicate a default of 
   none of the values.  Can be undef.
   
   =item $anytag 
   
   The text associate with $anyvalue above.
   
   =item $functionref 
   
   Each element in @idlist will be passed as a parameter 
   to the function referenced here.  The return value of the function should
   be a scalar description of the items.  If this value is undefined the 
   description of each item in @idlist will be the item name.
   
   =item @idlist 
   
   The items to be selected from.  One of these or $anyvalue will be the 
   value returned by the form element, $ENV{form.$name}.
   
   =back
   
   =cut
   
   ###############################################
   
 sub selectbox {  sub selectbox {
     my ($title,$name,$default,$anyvalue,$anytag,$functionref,@idlist)=@_;      my ($title,$name,$default,$anyvalue,$anytag,$functionref,@idlist)=@_;
     if (! defined($functionref)) { $functionref = sub { $_[0]}; }      if (! defined($functionref)) { $functionref = sub { $_[0]}; }
     my $uctitle=uc($title);      my $selout='';
     my $selout="\n".'<p><font color="#800000" face="helvetica">'.      $title=&mt($title);
         '<b>'.$uctitle.':</b></font><br /><select name="'.$name.'">';      if (defined($title)) {
     foreach ($anyvalue,@idlist) {          my $uctitle=uc($title);
           $selout="\n".'<p><font color="#800000" face="helvetica">'.
               '<b>'.$uctitle.': </b></font>';
       }
       $selout .= '<select name="'.$name.'">';
       unshift @idlist,$anyvalue if (defined($anyvalue));
       foreach (@idlist) {
         $selout.='<option value="'.$_.'"';          $selout.='<option value="'.$_.'"';
         if ($_ eq $default and !/^any$/) {          if ($_ eq $default and !/^any$/) {
     $selout.=' selected >'.&{$functionref}($_).'</option>';      $selout.=' selected >'.&mt(&{$functionref}($_)).'</option>';
  }   }
  elsif ($_ eq $default and /^$anyvalue$/) {   elsif ($_ eq $default and /^$anyvalue$/) {
     $selout.=' selected >'.$anytag.'</option>';      $selout.=' selected >'.&mt($anytag).'</option>';
  }   }
         else {$selout.='>'.&{$functionref}($_).'</option>';}          else {$selout.='>'.&mt(&{$functionref}($_)).'</option>';}
     }      }
     return $selout.'</select></p>';      return $selout.'</select>'.(defined($title)?'</p>':' ');
 }  }
   
 ######################################################################  ######################################################################
   #                End of HTML form building functions                 #  
   ######################################################################
   
   =pod
   
   =back 
   
   =cut
   
   
   ######################################################################
 ######################################################################  ######################################################################
   
 =pod   =pod 
   
 =item &advancedsearch()  =item &parse_advanced_search()
   
   Parse advanced search form and return the following:
   
   =over 4
   
   =item $query Scalar containing an SQL query.
   
   =item $customquery Scalar containing a custom query.
   
   =item $customshow Scalar containing commands to show custom metadata.
   
   =item $libraries_to_query Reference to array of domains to search.
   
 Parse advanced search results.  =back
   
 =cut  =cut
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub advancedsearch {  sub parse_advanced_search {
     my ($r,$hidden)=@_;      my ($r,$closebutton,$hidden_fields)=@_;
     my $fillflag=0;      my $fillflag=0;
       my $pretty_search_string = "<br />\n";
     # Clean up fields for safety      # Clean up fields for safety
     for my $field ('title','author','subject','keywords','url','version',      for my $field ('title','author','subject','keywords','url','version',
    'creationdatestart_month','creationdatestart_day',     'creationdatestart_month','creationdatestart_day',
Line 705  sub advancedsearch { Line 1252  sub advancedsearch {
    'lastrevisiondatestart_month','lastrevisiondatestart_day',     'lastrevisiondatestart_month','lastrevisiondatestart_day',
    'lastrevisiondatestart_year','lastrevisiondateend_month',     'lastrevisiondatestart_year','lastrevisiondateend_month',
    'lastrevisiondateend_day','lastrevisiondateend_year',     'lastrevisiondateend_day','lastrevisiondateend_year',
    'notes','abstract','mime','language','owner',     'notes','abstract','extension','language','owner',
    'custommetadata','customshow') {     'custommetadata','customshow','category') {
  $ENV{"form.$field"}=~s/[^\w\/\s\(\)\=\-\"\']//g;   $ENV{"form.$field"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
     }      }
     foreach ('mode','form','element') {      foreach ('mode','form','element') {
Line 715  sub advancedsearch { Line 1262  sub advancedsearch {
  $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});   $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
  $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;   $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
     }      }
       # Preprocess the category form element.
       $ENV{'form.category'} = 'any' if (! defined($ENV{'form.category'}) ||
                                         ref($ENV{'form.category'}));
       #
     # Check to see if enough information was filled in      # Check to see if enough information was filled in
     for my $field ('title','author','subject','keywords','url','version',      for my $field ('title','author','subject','keywords','url','version',
    'notes','abstract','mime','language','owner',     'notes','abstract','category','extension','language',
    'custommetadata') {                     'owner','custommetadata') {
  if (&filled($ENV{"form.$field"})) {   if (&filled($ENV{"form.$field"})) {
     $fillflag++;      $fillflag++;
  }   }
     }      }
     unless ($fillflag) {      unless ($fillflag) {
  &output_blank_field_error($r);   &output_blank_field_error($r,$closebutton,'phase=disp_adv',$hidden_fields);
  return OK;   return ;
     }      }
     # Turn the form input into a SQL-based query      # Turn the form input into a SQL-based query
     my $query='';      my $query='';
     my @queries;      my @queries;
       my $font = '<font color="#800000" face="helvetica">';
     # Evaluate logical expression AND/OR/NOT phrase fields.      # Evaluate logical expression AND/OR/NOT phrase fields.
     foreach my $field ('title','author','subject','notes','abstract','url',      foreach my $field ('title','author','subject','notes','abstract','url',
        'keywords','version','owner','mime') {         'keywords','version','owner') {
  if ($ENV{'form.'.$field}) {   if ($ENV{'form.'.$field}) {
     push @queries,&build_SQL_query($field,$ENV{'form.'.$field});              my $searchphrase = $ENV{'form.'.$field};
  }              $pretty_search_string .= $font."$field</font> contains <b>".
                   $searchphrase."</b>";
               if ($ENV{'form.'.$field.'_related'}) {
                   my @New_Words;
                   ($searchphrase,@New_Words) = &related_version($searchphrase);
                   if (@New_Words) {
                       $pretty_search_string .= " with related words: ".
                           "<b>@New_Words</b>.";
                   } else {
                       $pretty_search_string .= " with no related words.";
                   }
               }
               $pretty_search_string .= "<br />\n";
       push @queries,&build_SQL_query($field,$searchphrase);
           }
     }      }
       #
       # Make the 'mime' from 'form.category' and 'form.extension'
       #
       my $searchphrase;
       if (exists($ENV{'form.category'})    && 
           $ENV{'form.category'} !~ /^\s*$/ &&
           $ENV{'form.category'} ne 'any')     {
           my @extensions = &Apache::loncommon::filecategorytypes
                                                      ($ENV{'form.category'});
           if (scalar(@extensions) > 0) {
               $searchphrase = join(' OR ',@extensions);
           }
       }
       if (exists($ENV{'form.extension'}) && $ENV{'form.extension'} !~ /^\s*$/) {
           $searchphrase .= ' OR ' if (defined($searchphrase));
           my @extensions = split(/,/,$ENV{'form.extension'});
           $searchphrase .= join(' OR ',@extensions);
       }
       if (defined($searchphrase)) {
           push @queries,&build_SQL_query('mime',$searchphrase);
           $pretty_search_string .=$font.'mime</font> contains <b>'.
               $searchphrase.'</b><br />';
       }
       #####
     # Evaluate option lists      # Evaluate option lists
     if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') {      if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') {
  push @queries,"(language like \"$ENV{'form.language'}\")";   push @queries,"(language like \"$ENV{'form.language'}\")";
           $pretty_search_string.=$font."language</font>= ".
               &Apache::loncommon::languagedescription($ENV{'form.language'}).
                   "<br />\n";
     }      }
 #    if ($ENV{'form.mime'} and $ENV{'form.mime'} ne 'any') {  
 # push @queries,"(mime like \"$ENV{'form.mime'}\")";  
 #    }  
     if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {      if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {
  push @queries,"(copyright like \"$ENV{'form.copyright'}\")";   push @queries,"(copyright like \"$ENV{'form.copyright'}\")";
           $pretty_search_string.=$font."copyright</font> = ".
               &Apache::loncommon::copyrightdescription($ENV{'form.copyright'}).
                   "<br \>\n";
     }      }
       #
     # Evaluate date windows      # Evaluate date windows
     my $datequery=&build_date_queries(      my $datequery=&build_date_queries(
  $ENV{'form.creationdatestart_month'},   $ENV{'form.creationdatestart_month'},
Line 764  sub advancedsearch { Line 1358  sub advancedsearch {
  );   );
     # Test to see if date windows are legitimate      # Test to see if date windows are legitimate
     if ($datequery=~/^Incorrect/) {      if ($datequery=~/^Incorrect/) {
  &output_date_error($r,$datequery);   &output_date_error($r,$datequery,$closebutton,$hidden_fields);
  return OK;   return ;
     }      } elsif ($datequery) {
     elsif ($datequery) {          # Here is where you would set up pretty_search_string to output
           # date query information.
  push @queries,$datequery;   push @queries,$datequery;
     }      }
     # Process form information for custom metadata querying      # Process form information for custom metadata querying
     my $customquery='';      my $customquery=undef;
     if ($ENV{'form.custommetadata'}) {  #    if ($ENV{'form.custommetadata'}) {
  $customquery=&build_custommetadata_query('custommetadata',  #        $pretty_search_string .=$font."Custom Metadata Search</font>: <b>".
       $ENV{'form.custommetadata'});  #            $ENV{'form.custommetadata'}."</b><br />\n";
     }  # $customquery=&build_custommetadata_query('custommetadata',
     my $customshow='';  #      $ENV{'form.custommetadata'});
     if ($ENV{'form.customshow'}) {  #    }
  $customshow=$ENV{'form.customshow'};      my $customshow=undef;
  $customshow=~s/[^\w\s]//g;  #    if ($ENV{'form.customshow'}) {
  my @fields=split(/\s+/,$customshow);  #        $pretty_search_string .=$font."Custom Metadata Display</font>: <b>".
  $customshow=join(" ",@fields);  #            $ENV{'form.customshow'}."</b><br />\n";
     }  # $customshow=$ENV{'form.customshow'};
     # Send query statements over the network to be processed by either the SQL  # $customshow=~s/[^\w\s]//g;
     # database or a recursive scheme of 'grep'-like actions (for custom  # my @fields=split(/\s+/,$customshow);
     # metadata).  # $customshow=join(" ",@fields);
   #    }
       ## ---------------------------------------------------------------
       ## Deal with restrictions to given domains
       ## 
       my ($libraries_to_query,$pretty_domains_string) = 
           &parse_domain_restrictions();
       $pretty_search_string .= $pretty_domains_string."<br />\n";
       #
     if (@queries) {      if (@queries) {
  $query=join(" AND ",@queries);   $query=join(" AND ",@queries);
  $query="select * from metadata where $query";   $query="select * from metadata where $query";
  my $reply; # reply hash reference  
  unless ($customquery or $customshow) {  
     $reply=&Apache::lonnet::metadata_query($query);  
  }  
  else {  
     $reply=&Apache::lonnet::metadata_query($query,  
    $customquery,$customshow);  
  }  
  &output_results('Advanced',$r,$customquery,$reply,$hidden);  
         return OK;  
     } elsif ($customquery) {      } elsif ($customquery) {
  my $reply; # reply hash reference          $query = '';
  $reply=&Apache::lonnet::metadata_query('',  
        $customquery,$customshow);  
  &output_results('Advanced',$r,$customquery,$reply,$hidden);  
         return OK;  
     }      }
     # should not get to this point      return ($query,$customquery,$customshow,$libraries_to_query,
     return 'Error.  Should not have gone to this point.';              $pretty_search_string);
   }
   
   sub parse_domain_restrictions {
       my $libraries_to_query = undef;
       # $ENV{'form.domains'} can be either a scalar or an array reference.
       # We need an array.
       if (! exists($ENV{'form.domains'})) {
           return (undef,'');
       }
       my @allowed_domains;
       if (ref($ENV{'form.domains'})) {
           @allowed_domains =  @{$ENV{'form.domains'}};
       } else {
           @allowed_domains = ($ENV{'form.domains'});
       }
       my %domain_hash = ();
       my $pretty_domains_string;
       foreach (@allowed_domains) {
           $domain_hash{$_}++;
       }
       if ($domain_hash{'any'}) {
           $pretty_domains_string = "In all LON-CAPA domains.";
       } else {
           if (@allowed_domains > 1) {
               $pretty_domains_string = "In LON-CAPA domains:";
           } else {
               $pretty_domains_string = "In LON-CAPA domain ";
           }
           foreach (sort @allowed_domains) {
               $pretty_domains_string .= "<b>".$_."</b> ";
           }
           foreach (keys(%Apache::lonnet::libserv)) {
               if (exists($domain_hash{$Apache::lonnet::hostdom{$_}})) {
                   push @$libraries_to_query,$_;
               }
           }
       }
       return ($libraries_to_query,$pretty_domains_string);
 }  }
   
 ######################################################################  ######################################################################
Line 815  sub advancedsearch { Line 1442  sub advancedsearch {
   
 =pod   =pod 
   
 =item &basicsearch()   =item &parse_basic_search() 
   
 Parse basic search form.  Parse the basic search form and return a scalar containing an sql query.
   
 =cut  =cut
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub basicsearch {  sub parse_basic_search {
     my ($r,$hidden)=@_;      my ($r,$closebutton)=@_;
     # Clean up fields for safety      # Clean up fields for safety
     for my $field ('basicexp') {      for my $field ('basicexp') {
  $ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g;   $ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g;
Line 835  sub basicsearch { Line 1462  sub basicsearch {
  $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});   $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
  $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;   $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
     }      }
       my ($libraries_to_query,$pretty_domains_string) = 
           &parse_domain_restrictions();
     # Check to see if enough is filled in      # Check to see if enough is filled in
     unless (&filled($ENV{'form.basicexp'})) {      unless (&filled($ENV{'form.basicexp'})) {
  &output_blank_field_error($r);   &output_blank_field_error($r,$closebutton,'phase=disp_basic');
  return OK;   return OK;
     }      }
       my $pretty_search_string = '<b>'.$ENV{'form.basicexp'}.'</b>';
       my $search_string = $ENV{'form.basicexp'};
       if ($ENV{'form.related'}) {
           my @New_Words;
           ($search_string,@New_Words) = &related_version($ENV{'form.basicexp'});
           if (@New_Words) {
               $pretty_search_string .= " with related words: <b>@New_Words</b>.";
           } else {
               $pretty_search_string .= " with no related words.";
           }
       }
     # Build SQL query string based on form page      # Build SQL query string based on form page
     my $query='';      my $query='';
     my $concatarg=join(',"    ",',      my $concatarg=join(',',
        ('title', 'author', 'subject', 'notes', 'abstract',         ('title', 'author', 'subject', 'notes', 'abstract',
                         'keywords'));                          'keywords'));
     $concatarg='title' if $ENV{'form.titleonly'};      $concatarg='title' if $ENV{'form.titleonly'};
       $query=&build_SQL_query('concat_ws(" ",'.$concatarg.')',$search_string);
       if (defined($pretty_domains_string) && $pretty_domains_string ne '') {
           $pretty_search_string .= ' '.$pretty_domains_string;
       }
       $pretty_search_string .= "<br />\n";
       my $final_query = 'SELECT * FROM metadata WHERE '.$query;
   #    &Apache::lonnet::logthis($final_query);
       return ($final_query,$pretty_search_string,
               $libraries_to_query);
   }
   
   
   ######################################################################
   ######################################################################
   
     $query=&build_SQL_query('concat('.$concatarg.')',$ENV{'form.'.'basicexp'});  =pod 
   
     # Get reply (either a hash reference to filehandles or bad connection)  =item &related_version
 #    &Apache::lonnet::logthis("metadata query started:".time);  
     my $reply=&Apache::lonnet::metadata_query('select * from metadata where '.$query);  
 #    &Apache::lonnet::logthis("metadata query finished:".time);  
     # Output search results  
   
     &output_results('Basic',$r,$query,$reply,$hidden);  Modifies an input string to include related words.  Words in the string
   are replaced with parenthesized lists of 'OR'd words.  For example
   "torque" is replaced with "(torque OR word1 OR word2 OR ...)".  
   
     return OK;  Note: Using this twice on a string is probably silly.
 }  
   
   =cut
   
   ######################################################################
   ######################################################################
   sub related_version {
       my $search_string = shift;
       my $result = $search_string;
       my %New_Words = ();
       while ($search_string =~ /(\w+)/cg) {
           my $word = $1;
           next if (lc($word) =~ /\b(or|and|not)\b/);
           my @Words = &Apache::loncommon::get_related_words($word);
           @Words = ($#Words>4? @Words[0..4] : @Words);
           foreach (@Words) { $New_Words{$_}++;}
           my $replacement = join " OR ", ($word,@Words);
           $result =~ s/(\b)$word(\b)/$1($replacement)$2/g;
       }
       return $result,sort(keys(%New_Words));
   }
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
Line 939  sub recursive_SQL_query_build { Line 1607  sub recursive_SQL_query_build {
     my @matches=($pattern=~/(\[[^\]|\[]*\])/g);      my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
     return $pattern unless @matches;      return $pattern unless @matches;
     foreach my $match (@matches) {      foreach my $match (@matches) {
  $match=~/\[ (\w+)\s(.*) \]/;          $match=~/\[ (\w+)\s(.*) \]/;
  my ($key,$value)=($1,$2);          my ($key,$value)=($1,$2);
  my $replacement='';          my $replacement='';
  if ($key eq 'literal') {          if ($key eq 'literal') {
     $replacement="($dkey like \"\%$value\%\")";              $replacement="($dkey LIKE \"\%$value\%\")";
  }          } elsif (lc($key) eq 'not') {
  elsif ($key eq 'not') {              $value=~s/LIKE/NOT LIKE/;
     $value=~s/like/not like/;  #          $replacement="($dkey not like $value)";
 #    $replacement="($dkey not like $value)";              $replacement="$value";
     $replacement="$value";          } elsif ($key eq 'and') {
  }              $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
  elsif ($key eq 'and') {              $replacement="($1 AND $2)";
     $value=~/(.*[\"|\)]) ([|\(|\^].*)/;   } elsif ($key eq 'or') {
     $replacement="($1 AND $2)";              $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
  }              $replacement="($1 OR $2)";
  elsif ($key eq 'or') {  
     $value=~/(.*[\"|\)]) ([|\(|\^].*)/;  
     $replacement="($1 OR $2)";  
  }   }
  substr($pattern,   substr($pattern,
        index($pattern,$match),                 index($pattern,$match),
        length($match),                 length($match),
        $replacement                 $replacement);
        );  
     }      }
     &recursive_SQL_query_build($dkey,$pattern);      &recursive_SQL_query_build($dkey,$pattern);
 }  }
Line 1032  sub build_date_queries { Line 1696  sub build_date_queries {
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
   
 =pod   =pod
   
   =item &copyright_check()
   
   =cut
   
   ######################################################################
   ######################################################################
   sub copyright_check {
       my $Metadata = shift;
       # Check copyright tags and skip results the user cannot use
       my (undef,undef,$resdom,$resname) = split('/',
                                                 $Metadata->{'url'});
       # Check for priv
       if (($Metadata->{'copyright'} eq 'priv') && 
           (($ENV{'user.name'} ne $resname) &&
            ($ENV{'user.domain'} ne $resdom))) {
           return 0;
       }
       # Check for domain
       if (($Metadata->{'copyright'} eq 'domain') &&
           ($ENV{'user.domain'} ne $resdom)) {
           return 0;
       }
       return 1;
   }
   
   
   ######################################################################
   ######################################################################
   
   =pod
   
   =item &ensure_db_and_table
   
 =item &output_results()   Ensure we can get lonmysql to connect to the database and the table we
   need exists.
   
 Format and output results based on a reply list.  Inputs: $r, table id
 There are two windows that this function writes to.  The main search  
 window ("srch") has a listing of the results.  A secondary window ("popwin")  Returns: undef on error, 1 if the table exists.
 gives the status of the network search (time elapsed, number of machines  
 contacted, etc.)  
   
 =cut  =cut
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub output_results {  sub ensure_db_and_table {
 #    &Apache::lonnet::logthis("output_results:".time);      my ($r,$table) = @_;
     my $fnum; # search result counter      ##
     my ($mode,$r,$query,$replyref,$hidden)=@_;      ## Sanity check the table id.
     my %rhash=%{$replyref};      ##
     my $compiledresult='';      if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
     my $timeremain=300; # (seconds)          $r->print("Unable to retrieve search results.  ".
     my $elapsetime=0;                    "Unable to determine the table results were stored in.  ".
     my $resultflag=0;                    "</body></html>");
     my $tflag=1;          return undef;
     my $viewselect=$ENV{'form.viewselect'};      }
     #      ##
     # make query information persistent to allow for subsequent revision      ## Make sure we can connect and the table exists.
     my $persistent=&make_persistent();      ##
     # spit out the results header      my $connection_result = &Apache::lonmysql::connect_to_db();
     $r->print(&search_results_header($mode));      if (!defined($connection_result)) {
           $r->print("Unable to connect to the MySQL database where your results".
                     " are stored. </body></html>");
           &Apache::lonnet::logthis("lonsearchcat: unable to get lonmysql to".
                                    " connect to database.");
           &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
           return undef;
       }
       my $table_check = &Apache::lonmysql::check_table($table);
       if (! defined($table_check)) {
           $r->print("A MySQL error has occurred.</form></body></html>");
           &Apache::lonnet::logthis("lonmysql was unable to determine the status".
                                    " of table ".$table);
           return undef;
       } elsif (! $table_check) {
           $r->print("The table of results could not be found.");
           &Apache::lonnet::logthis("The user requested a table, ".$table.
                                    ", that could not be found.");
           return undef;
       }
       return 1;
   }
   
   ######################################################################
   ######################################################################
   
   =pod
   
   =item &print_sort_form
   
   =cut
   
   ######################################################################
   ######################################################################
   sub print_sort_form {
       my ($r,$pretty_query_string) = @_;
       my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
       ##
       my %SortableFields=&Apache::lonlocal::texthash( 
            id        => 'Default',
            title     => 'Title',
            author    => 'Author',
            subject   => 'Subject',
            url       => 'URL',
            version   => 'Version Number',
            mime      => 'Mime type',
            lang      => 'Language',
            owner     => 'Owner/Publisher',
            copyright => 'Copyright',
            hostname  => 'Host',
            creationdate     => 'Creation Date',
            lastrevisiondate => 'Revision Date'
        );
       ##
       my $table = $ENV{'form.table'};
       return if (! &ensure_db_and_table($r,$table));
       ##
       ## Get the number of results 
       ##
       my $total_results = &Apache::lonmysql::number_of_rows($table);
       if (! defined($total_results)) {
           $r->print("A MySQL error has occurred.</form></body></html>");
           &Apache::lonnet::logthis("lonmysql was unable to determine the number".
                                    " of rows in table ".$table);
           &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
           return;
       }
       my $result;
       $result.=<<END;
   <html>
   <head>
   <script>
       function change_sort() {
           var newloc = "/adm/searchcat?phase=results";
           newloc += "&persistent_db_id=$ENV{'form.persistent_db_id'}";
           newloc += "&sortby=";
           newloc += document.forms.statusform.elements.sortby.value;
           parent.resultsframe.location= newloc;
       }
   </script>
   <title>Results</title>
   </head>
   $bodytag
   <form name="statusform" action="" method="post">
   <input type="hidden" name="Queue" value="" />
   END
   
   #<h2>Sort Results</h2>
   #Sort by: <select size="1" name="sortby" onchange="javascript:change_sort();">
   #    $ENV{'form.sortby'} = 'id' if (! defined($ENV{'form.sortby'}));
   #    foreach (keys(%SortableFields)) {
   #        $result.="<option name=\"$_\"";
   #        if ($_ eq $ENV{'form.sortby'}) {
   #            $result.=" selected ";
   #        }
   #        $result.=" >$SortableFields{$_}</option>\n";
   #    }
   #    $result.="</select>\n";
       my $revise = &revise_button();
       $result.=<<END;
   <p>
   There are $total_results matches to your query. $revise
   </p><p>
   Search:$pretty_query_string
   </p>
   </form>
   </body>
   </html>
   END
       $r->print($result);
       return;
   }
   
   #####################################################################
   #####################################################################
   
   =pod
   
   =item MySQL Table Description
   
   MySQL table creation requires a precise description of the data to be
   stored.  The use of the correct types to hold data is vital to efficient
   storage and quick retrieval of records.  The columns must be described in
   the following format:
   
   =cut
   
   #####################################################################
   #####################################################################
   
   my @Datatypes = 
       ( { name => 'id', 
           type => 'MEDIUMINT',
           restrictions => 'UNSIGNED NOT NULL',
           primary_key  => 'yes',
           auto_inc     => 'yes' },
         { name => 'title',     type=>'TEXT'},
         { name => 'author',    type=>'TEXT'},
         { name => 'subject',   type=>'TEXT'},
         { name => 'url',       type=>'TEXT', restrictions => 'NOT NULL' },
         { name => 'keywords',  type=>'TEXT'},
         { name => 'version',   type=>'TEXT'},
         { name => 'notes',     type=>'TEXT'},
         { name => 'abstract',  type=>'TEXT'},
         { name => 'mime',      type=>'TEXT'},
         { name => 'language',  type=>'TEXT'},
         { name => 'owner',     type=>'TEXT'},
         { name => 'copyright', type=>'TEXT'},
         { name => 'dependencies',     type=>'TEXT'},
         { name => 'modifyinguser', type=>'TEXT'},
         { name => 'authorspace', type=>'TEXT'},
         { name => 'lowestgradelevel',  type=>'INT'},
         { name => 'highestgradelevel', type=>'INT'},
         { name => 'standards', type=>'TEXT'},
         { name => 'count',     type=>'INT'},
         { name => 'course', type=>'INT'},
         { name => 'course_list',  type=>'TEXT'},
         { name => 'goto', type=>'INT'},
         { name => 'goto_list',  type=>'TEXT'},
         { name => 'comefrom', type=>'INT'},
         { name => 'comefrom_list',  type=>'TEXT'},
         { name => 'sequsage', type=>'INT'},
         { name => 'sequsage_list',  type=>'TEXT'},
         { name => 'stdno', type=>'INT'},
         { name => 'stdno_list',  type=>'TEXT'},
         { name => 'avetries', type=>'FLOAT'},
         { name => 'avetries_list',  type=>'TEXT'},
         { name => 'difficulty', type=>'FLOAT'},
         { name => 'difficulty_list',  type=>'TEXT'},
         { name => 'clear',  type=>'FLOAT'},
         { name => 'technical',  type=>'FLOAT'},
         { name => 'correct',  type=>'FLOAT'},
         { name => 'helpful',  type=>'FLOAT'},
         { name => 'depth',  type=>'FLOAT'},
         { name => 'hostname', type=> 'TEXT'},
         #--------------------------------------------------
         { name => 'creationdate',     type=>'DATETIME'},
         { name => 'lastrevisiondate', type=>'DATETIME'},
         #--------------------------------------------------
         );
   
   my @Fullindicies = 
       qw/title/;
   #    qw/title author subject abstract mime language owner copyright/;
       
   ######################################################################
   ######################################################################
   
   =pod
   
   =item &create_results_table()
   
   Creates the table of search results by calling lonmysql.  Stores the
   table id in $ENV{'form.table'}
   
   Inputs: none.
   
   Returns: the identifier of the table on success, undef on error.
   
   =cut
   
   ######################################################################
   ######################################################################
   sub create_results_table {
       my $table = &Apache::lonmysql::create_table
           ( { columns => \@Datatypes,
               FULLTEXT => [{'columns' => \@Fullindicies},],
           } );
       if (defined($table)) {
           $ENV{'form.table'} = $table;
           return $table;
       } 
       return undef; # Error...
   }
   
   ######################################################################
   ######################################################################
   
   =pod
   
   =item Search Status update functions
   
   Each of the following functions changes the values of one of the
   input fields used to display the search status to the user.  The names
   should be explanatory.
   
   Inputs: Apache request handler ($r), text to display.
   
   Returns: Nothing.
   
   =over 4
   
   =item &update_count_status()
   
   =item &update_status()
   
   =item &update_seconds()
   
   =back
   
   =cut
   
   ######################################################################
   ######################################################################
   sub update_count_status {
       my ($r,$text) = @_;
       $text =~ s/\'/\\\'/g;
       $r->print
           ("<script>document.statusform.count.value = ' $text'</script>\n");
     $r->rflush();      $r->rflush();
     # begin showing the cataloged results  }
     my $action = "/adm/searchcat";  
     if ($mode eq 'Basic') {   sub update_status {
         $action .= "?reqinterface=basic";      my ($r,$text) = @_;
     } elsif ($mode eq 'Advanced') {      $text =~ s/\'/\\\'/g;
         $action .= "?reqinterface=advanced";      $r->print
     }          ("<script>document.statusform.status.value = ' $text'</script>\n");
     $r->print(<<CATALOGCONTROLS);      $r->rflush();
 <form name='results' method="post" action="$action">  }
 $hidden  
 <input type='hidden' name='acts' value='' />  sub update_seconds {
 <input type='button' value='Revise search request'      my ($r,$text) = @_;
 onClick='this.form.submit();' />      $text =~ s/\'/\\\'/g;
 $importbutton      $r->print
 $closebutton          ("<script>document.statusform.seconds.value = ' $text'</script>\n");
 $persistent      $r->rflush();
 <hr />  }
 CATALOGCONTROLS  
   ######################################################################
   ######################################################################
   
   =pod
   
   =item &revise_button
   
   Inputs: None
   
   Returns: html string for a 'revise search' button.
   
   =cut
   
   ######################################################################
   ######################################################################
   sub revise_button {
       my $revise_phase = 'disp_basic';
       $revise_phase = 'disp_adv' if ($ENV{'form.searchmode'} eq 'advanced');
       my $newloc = '/adm/searchcat'.
           '?persistent_db_id='.$ENV{'form.persistent_db_id'}.
               '&cleargroupsort=1'.
               '&phase='.$revise_phase;
       my $result = qq{<input type="button" value="Revise search" name="revise"} .
           qq{ onClick="parent.location='$newloc';" /> };
       return $result;
   }
   
   ######################################################################
   ######################################################################
   
   =pod
   
   =item &run_search 
   
   =cut
   
   ######################################################################
   ######################################################################
   sub run_search {
       my ($r,$query,$customquery,$customshow,$serverlist,$pretty_string) = @_;
       my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
       my $connection = $r->connection;
       #
       # Timing variables
       #
       my $starttime = time;
       my $max_time  = 30;  # seconds for the search to complete
     #      #
     # make the pop-up window for status      # Print run_search header
     #      #
     $r->print(&make_popwin(%rhash));      $r->print(<<END);
   <html>
   <head><title>Search Status</title></head>
   $bodytag
   <form name="statusform" action="" method="post">
   <input type="hidden" name="Queue" value="" />
   END
       # Check to see if $pretty_string has more than one carriage return.
       # Assume \n s are following <br /> s and truncate the value.
       # (there is probably a better way)...
       my @Lines = split /<br \/>/,$pretty_string;
       if (@Lines > 2) {
           $pretty_string = join '<br \>',(@Lines[0..2],'....<br />');
       }
       $r->print(&mt("Search").": ".$pretty_string);
     $r->rflush();      $r->rflush();
       #
       # Determine the servers we need to contact.
       #
       my @Servers_to_contact;
       if (defined($serverlist)) {
           if (ref($serverlist) eq 'ARRAY') {
               @Servers_to_contact = @$serverlist;
           } else {
               @Servers_to_contact = ($serverlist);
           }
       } else {
           @Servers_to_contact = sort(keys(%Apache::lonnet::libserv));
       }
       my %Server_status;
       my $table =$ENV{'form.table'};
       if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
           $r->print("Unable to determine table id to store search results in.".
                     "The search has been aborted.</body></html>");
           return;
       }
       my $table_status = &Apache::lonmysql::check_table($table);
       if (! defined($table_status)) {
           $r->print("Unable to determine status of table.</body></html>");
           &Apache::lonnet::logthis("Bogus table id of $table for ".
                                    "$ENV{'user.name'} @ $ENV{'user.domain'}");
           &Apache::lonnet::logthis("lonmysql error = ".
                                    &Apache::lonmysql::get_error());
           return;
       }
       if (! $table_status) {
           $r->print("The table id,$table, we tried to use is invalid.".
                     "The search has been aborted.</body></html>");
           return;
       }
     ##      ##
     ## Prepare for the main loop below      ## Prepare for the big loop.
     ##      ##
     my $servercount=0;      my $hitcountsum;
     my $hitcountsum=0;      my $server; 
     my $servernum=(keys %rhash);      my $status;
     my $serversleft=$servernum;      my $revise = &revise_button();
     ##      $r->print(<<END);
     ## Run until we run out of time or we run out of servers  <table>
     ##  <tr><th>Status</th><th>Total Matches</th><th>Time Remaining</th><th></th></tr>
     while($serversleft && $timeremain) {  <tr>
       ##  <td><input type="text" name="status"  value="" size="30" /></td>
       ## %rhash has servers deleted from it as results come in   <td><input type="text" name="count"   value="" size="10" /></td>
       ## (within the foreach loop below).  <td><input type="text" name="seconds" value="" size="8" /></td>
       ##  <td>$revise</td>
       foreach my $rkey (sort keys %rhash) {  </tr>
 #        &Apache::lonnet::logthis("Server $rkey:".time);  </table>
  $servercount++;  </form>
  $compiledresult='';  END
  my $reply=$rhash{$rkey};      $r->rflush();
  my @results;      my $time_remaining = $max_time - (time - $starttime) ;
  if ($reply eq 'con_lost') {      my $last_time = $time_remaining;
     &popwin_imgupdate($r,$rkey,"srvbad.gif");      &update_seconds($r,$time_remaining);
     $serversleft--;      &update_status($r,'contacting '.$Servers_to_contact[0]);
             delete $rhash{$rkey};      while (($time_remaining > 0) &&
  } else {             ((@Servers_to_contact) || keys(%Server_status))) {
             # must do since 'use strict' checks for tainting          # Send out a search request if it needs to be done.
     $reply=~/^([\.\w]+)$/;           if (@Servers_to_contact) {
     my $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1;              # Contact one server
     $reply=~/(.*?)\_/;              my $server = shift(@Servers_to_contact);
             for (my $counter=0;$counter<2;$counter++) {              &update_status($r,&mt('contacting').' '.$server);
                 if (-e $replyfile && ! -e "$replyfile.end") {              my $reply=&Apache::lonnet::metadata_query($query,$customquery,
                     &popwin_imgupdate($r,$rkey,"srvhalf.gif");                                                        $customshow,[$server]);
                     &popwin_js($r,'popwin.hc["'.$rkey.'"]='.              ($server) = keys(%$reply);
                                '"still transferring..."'.';');              $Server_status{$server} = $reply->{$server};
           } else {
               # wait a sec. to give time for files to be written
               # This sleep statement is here instead of outside the else 
               # block because we do not want to pause if we have servers
               # left to contact.  
               if (scalar (keys(%Server_status))) {
                   &update_status($r,
                          &mt('waiting on').' '.(join(' ',keys(%Server_status))));
               }
               sleep(1); 
           }
           #
           #
           # Loop through the servers we have contacted but do not
           # have results from yet, looking for results.
           while (my ($server,$status) = each(%Server_status)) {
               last if ($connection->aborted());
               if ($status eq 'con_lost') {
                   delete ($Server_status{$server});
                   next;
               }
               $status=~/^([\.\w]+)$/; 
              my $datafile=$r->dir_config('lonDaemons').'/tmp/'.$1;
               if (-e $datafile && ! -e "$datafile.end") {
                   &update_status($r,&mt('Receiving results from').' '.$server);
                   next;
               }
               last if ($connection->aborted());
               if (-e "$datafile.end") {
                   &update_status($r,&mt('Reading results from').' '.$server);
                   if (-z "$datafile") {
                       delete($Server_status{$server});
                       next;
                   }
                   my $fh;
                   if (!($fh=Apache::File->new($datafile))) { 
                       $r->print("Unable to open search results file for ".
                                     "server $server.  Omitting from search");
                       delete($Server_status{$server}); 
                      next;
                 }                  }
                 # Are we finished transferring data?                  # Read in the whole file.
                 if (-e "$replyfile.end") {                  while (my $result = <$fh>) {
                     $serversleft--;                      last if ($connection->aborted());
                     delete $rhash{$rkey};                      # handle custom fields?  Someday we will!
                     if (-s $replyfile) {                      chomp($result);
                         &popwin_imgupdate($r,$rkey,"srvgood.gif");                      next unless $result;
                         my $fh;                      # Parse the result.
                         unless ($fh=Apache::File->new($replyfile)){                       my %Fields = &parse_raw_result($result,$server);
                             # Is it really appropriate to die on this error?                      $Fields{'hostname'} = $server;
                             $r->print('ERROR: file '.                      next if (! &copyright_check(\%Fields));
                                       $replyfile.' cannot be opened');                      # Store the result in the mysql database
                             return OK;                      my $result = &Apache::lonmysql::store_row($table,\%Fields);
                         }                      if (! defined($result)) {
                         @results=<$fh> if $fh;                          $r->print(&Apache::lonmysql::get_error());
                         my $hits =@results;  
                         &popwin_js($r,'popwin.hc["'.$rkey.'"]='.  
                                    $hits.';');  
                         $hitcountsum+=$hits;  
                         &popwin_js($r,'popwin.document.forms.popremain.'.  
                                    'numhits.value='.$hitcountsum.';');  
                     } else {  
                         &popwin_imgupdate($r,$rkey,"srvempty.gif");  
                         &popwin_js($r,'popwin.hc["'.$rkey.'"]=0;');  
                     }                      }
                     last;                      # $r->print(&Apache::lonmysql::get_debug());
                 } # end of if ( -e "$replyfile.end")                      $hitcountsum ++;
                 last unless $timeremain;                      $time_remaining = $max_time - (time - $starttime) ;
                 sleep 1;    # wait for daemons to write files?                      if ($last_time - $time_remaining > 0) {
                 $timeremain--;                          &update_seconds($r,$time_remaining);
                 $elapsetime++;                          $last_time = $time_remaining;
                 &popwin_js($r,"popwin.document.popremain.".  
                            "elapsetime.value=$elapsetime;");  
     }  
     &popwin_js($r,'popwin.document.whirly.'.  
        'src="/adm/lonIcons/lonanimend.gif";');  
  } # end of if ($reply eq 'con_lost') else statement  
         my %Fields = undef;     # Holds the data to be sent to the various   
                                 # *_view routines.  
         my ($extrashow,$customfields,$customhash) = &handle_custom_fields(\@results);  
         my @customfields = @$customfields;  
         my %customhash   = %$customhash;  
  untie %hash if (keys %hash);  
         #  
  if (! tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {  
     $r->print('<html><head></head><body>Unable to tie hash to db '.  
                       'file</body></html>');  
         } else {  
     if ($ENV{'form.launch'} eq '1') {  
  &start_fresh_session();  
     }  
     foreach my $result (@results) {  
  next if $result=~/^custom\=/;  
  chomp $result;  
  next unless $result;  
                 %Fields = &parse_raw_result($result,$rkey);  
  $Fields{'extrashow'}=$extrashow;  
  if ($extrashow) {  
     foreach my $field (@customfields) {  
  my $value='';  
  $value = $1 if ($customhash{$Fields{'url'}}=~/\<{$field}[^\>]*\>(.*?)\<\/{$field}[^\>]*\>/s);  
                         $Fields{'extrashow'}=~s/\<\!\-\- $field \-\-\>/ $value/g;  
                     }                      }
                 }                      if ($hitcountsum % 50 == 0) {
                 $compiledresult.="\n<p>\n";                          &update_count_status($r,$hitcountsum);
                 if ($ENV{'form.catalogmode'} eq 'interactive') {                      }
                     my $titleesc=$Fields{'title'};                  } # End of foreach (@results)
                     $titleesc=~s/\'/\\'/; # '                  $fh->close();
                     $compiledresult.=<<END if ($ENV{'form.catalogmode'} eq 'interactive');                  # $server is only deleted if the results file has been 
                   # found and (successfully) opened.  This may be a bad idea.
                   delete($Server_status{$server});
               }
               last if ($connection->aborted());
               &update_count_status($r,$hitcountsum);
           }
           last if ($connection->aborted());
           # Finished looping through the servers
           $starttime = time if (@Servers_to_contact);
           $time_remaining = $max_time - (time - $starttime) ;
           if ($last_time - $time_remaining > 0) {
               $last_time = $time_remaining;
               &update_seconds($r,$time_remaining);
           }
       }
       &update_status($r,&mt('Search Complete').$server);
       &update_seconds($r,0);
       &Apache::lonmysql::disconnect_from_db();
       # We have run out of time or run out of servers to talk to and
       # results to get.  
       $r->print("</body></html>");
       if ($ENV{'form.catalogmode'} ne 'groupsearch') {
           $r->print("<script>".
                         "window.location='/adm/searchcat?".
                         "phase=sort&".
                         "persistent_db_id=$ENV{'form.persistent_db_id'}';".
                     "</script>");
       }
       return;
   }
   
   ######################################################################
   ######################################################################
   =pod
   
   =item &prev_next_buttons
   
   =cut
   
   ######################################################################
   ######################################################################
   sub prev_next_buttons {
       my ($current_min,$show,$total,$parms) = @_;
       return '' if ($show eq 'all'); # No links if you get them all at once.
       my $links;
       ##
       ## Prev
       my $prev_min = $current_min - $show;
       $prev_min = 1 if $prev_min < 1;
       if ($prev_min < $current_min) {
           $links .= qq{
   <a href="/adm/searchcat?$parms&start=$prev_min&show=$show">prev</a>
   };    
       } else {
           $links .= 'prev';
       }
       ##
       ## Pages.... Someday.
       ##
       $links .= qq{ &nbsp;
   <a href="/adm/searchcat?$parms&start=$current_min&$show=$show">reload</a>
   };
       ##
       ## Next
       my $next_min = $current_min + $show;
       $next_min = $current_min if ($next_min > $total);
       if ($next_min != $current_min) {
           $links .= qq{ &nbsp;
   <a href="/adm/searchcat?$parms&start=$next_min&show=$show">next</a>
   };    
       } else {
           $links .= '&nbsp;next';
       }
       return $links;
   }
   ######################################################################
   ######################################################################
   
   =pod
   
   =item &display_results
   
   =cut
   
   ######################################################################
   ######################################################################
   sub display_results {
       my ($r,$importbutton,$closebutton,$diropendb) = @_;
       my $connection = $r->connection;
       $r->print(&search_results_header($importbutton,$closebutton));
       ##
       ## Set viewing function
       ##
       my $viewfunction = $Views{$ENV{'form.viewselect'}};
       if (!defined($viewfunction)) {
           $r->print("Internal Error - Bad view selected.\n");
           $r->rflush();
           return;
       }
       ##
       ## $checkbox_num is a count of the number of checkboxes output on the 
       ## page this is used only during catalogmode=groupsearch.
       my $checkbox_num = 0;
       ##
       ## Get the catalog controls setup
       ##
       my $action = "/adm/searchcat?phase=results";
       ##
       ## Deal with groupsearch
       ##
       if ($ENV{'form.catalogmode'} eq 'groupsearch') {
           if (! tie(%groupsearch_db,'GDBM_File',$diropendb,
                     &GDBM_WRCREAT(),0640)) {
               $r->print('Unable to store import results.</form></body></html>');
               $r->rflush();
               return;
           } 
       }
       ##
       ## Prepare the table for querying
       ##
       my $table = $ENV{'form.table'};
       return if (! &ensure_db_and_table($r,$table));
       ##
       ## Get the number of results 
       ##
       my $total_results = &Apache::lonmysql::number_of_rows($table);
       if (! defined($total_results)) {
           $r->print("A MySQL error has occurred.</form></body></html>");
           &Apache::lonnet::logthis("lonmysql was unable to determine the number".
                                    " of rows in table ".$table);
           &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
           return;
       }
       ##
       ## Determine how many results we need to get
       ##
       $ENV{'form.start'} = 1      if (! exists($ENV{'form.start'}));
       $ENV{'form.show'}  = 'all'  if (! exists($ENV{'form.show'}));
       my $min = $ENV{'form.start'};
       my $max;
       if ($ENV{'form.show'} eq 'all') {
           $max = $total_results ;
       } else {
           $max = $min + $ENV{'form.show'} - 1;
           $max = $total_results if ($max > $total_results);
       }
       ##
       ## Output links (if necessary) for 'prev' and 'next' pages.
       ##
       $r->print
           ('<center>'.
            &prev_next_buttons($min,$ENV{'form.show'},$total_results,
                               "table=".$ENV{'form.table'}.
                               "&phase=results".
                               "&persistent_db_id=".$ENV{'form.persistent_db_id'})
            ."</center>\n"
            );
       if ($total_results == 0) {
           $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="1">'.
                     '<h3>'.&mt('There are currently no results').'.</h3>'.
                     "</form></body></html>");
           return;
       } else {
           $r->print
               ("<center>Results $min to $max out of $total_results</center>\n");
       }
       ##
       ## Get results from MySQL table
       ##
       my @Results = &Apache::lonmysql::get_rows($table,
                                                 'id>='.$min.' AND id<='.$max);
       ##
       ## Loop through the results and output them.
       ##
       foreach my $row (@Results) {
           if ($connection->aborted()) {
               &cleanup();
               return;
           }
           my %Fields = %{&parse_row(@$row)};
           my $output="<p>\n";
           my $prefix=&catalogmode_output($Fields{'title'},$Fields{'url'},
                                          $Fields{'id'},$checkbox_num++);
           # Render the result into html
           $output.= &$viewfunction($prefix,%Fields);
           # Print them out as they come in.
           $r->print($output);
           $r->rflush();
       }
       if (@Results < 1) {
           $r->print(&mt("There were no results matching your query"));
       } else {
           $r->print
               ('<center>'.
                &prev_next_buttons($min,$ENV{'form.show'},$total_results,
                                   "table=".$ENV{'form.table'}.
                                   "&phase=results".
                                   "&persistent_db_id=".
                                   $ENV{'form.persistent_db_id'})
                ."</center>\n"
                );
       }
       $r->print("</form></body></html>");
       $r->rflush();
       untie %groupsearch_db if (tied(%groupsearch_db));
       return;
   }
   
   ######################################################################
   ######################################################################
   
   =pod
   
   =item &catalogmode_output($title,$url,$fnum,$checkbox_num)
   
   Returns html needed for the various catalog modes.  Gets inputs from
   $ENV{'form.catalogmode'}.  Stores data in %groupsearch_db.
   
   =cut
   
   ######################################################################
   ######################################################################
   sub catalogmode_output {
       my $output = '';
       my ($title,$url,$fnum,$checkbox_num) = @_;
       if ($ENV{'form.catalogmode'} eq 'interactive') {
           $title=~ s/\'/\\\'/g;
           if ($ENV{'form.catalogmode'} eq 'interactive') {
               $output.=<<END 
 <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"  <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
 onClick="javascript:select_data('$titleesc','$Fields{'url'}')">  onClick="javascript:select_data('$title','$url')">
 </font>  </font>
 <br />  
 END  END
                 }          }
                 if ($ENV{'form.catalogmode'} eq 'groupsearch') {      } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
     $fnum+=0;          $groupsearch_db{"pre_${fnum}_link"}=$url;
     $hash{"pre_${fnum}_link"}=$Fields{'url'};          $groupsearch_db{"pre_${fnum}_title"}=$title;
     $hash{"pre_${fnum}_title"}=$Fields{'title'};          $output.=<<END;
     $compiledresult.=<<END;  
 <font size='-1'>  <font size='-1'>
 <input type="checkbox" name="returnvalues" value="SELECT"  <input type="checkbox" name="returnvalues" value="SELECT"
 onClick="javascript:queue($fnum)" />  onClick="javascript:queue($checkbox_num,$fnum)" />
 </font>  </font>
 <br />  
 END  END
 # <input type="hidden" name="title$fnum" value="$title" />  
 # <input type="hidden" name="url$fnum" value="$url" />  
                     $fnum++;  
  }  
         if ($viewselect eq 'Detailed Citation View') {  
     $compiledresult.=&detailed_citation_view  
                         (%Fields, hostname => $rkey );  
  }  
                 elsif ($viewselect eq 'Summary View') {  
     $compiledresult.=&summary_view  
                         (%Fields, hostname => $rkey );  
         }  
                 elsif ($viewselect eq 'Fielded Format') {  
     $compiledresult.=&fielded_format_view  
                         (%Fields, hostname => $rkey );  
         }  
                 elsif ($viewselect eq 'XML/SGML') {  
     $compiledresult.=&xml_sgml_view  
                         (%Fields, hostname => $rkey );  
  }  
                 if ($compiledresult or $servercount!=$servernum) {  
                     $compiledresult.="<hr align='left' width='200' noshade />";  
                 }  
             }  
             untie %hash;  
         }  
  if ($compiledresult) {  
     $resultflag=1;  
             $r->print($compiledresult);  
  }  
         my $percent=sprintf('%3.0f',($servercount/$servernum*100));  
       } # End of foreach loop over servers remaining  
     }   # End of big loop - while($serversleft && $timeremain)  
     unless ($resultflag) {  
         $r->print("\nThere were no results that matched your query\n");  
     }      }
 #    $r->print('<script type="text/javascript">'.'popwin.close()</script>'."\n"); $r->rflush();       return $output;
     $r->print("</body>\n</html>\n");  }
     return;  ######################################################################
   ######################################################################
   
   =pod
   
   =item &parse_row
   
   Parse a row returned from the database.
   
   =cut
   
   ######################################################################
   ######################################################################
   sub parse_row {
       my @Row = @_;
       my %Fields;
       for (my $i=0;$i<=$#Row;$i++) {
           $Fields{$Datatypes[$i]->{'name'}}=&Apache::lonnet::unescape($Row[$i]);
       }
       $Fields{'language'} = 
           &Apache::loncommon::languagedescription($Fields{'language'});
       $Fields{'copyrighttag'} =
           &Apache::loncommon::copyrightdescription($Fields{'copyright'});
       $Fields{'mimetag'} =
           &Apache::loncommon::filedescription($Fields{'mime'});
       return \%Fields;
 }  }
   
 ###########################################################  ###########################################################
Line 1256  END Line 2512  END
 =item &parse_raw_result()  =item &parse_raw_result()
   
 Takes a line from the file of results and parse it.  Returns a hash   Takes a line from the file of results and parse it.  Returns a hash 
 with keys for the following fields:  with keys according to column labels
 'title', 'author', 'subject', 'url', 'keywords', 'version', 'notes',   
 'abstract', 'mime', 'lang', 'owner', 'copyright', 'creationdate',   
 'lastrevisiondate'.  
   
 In addition, the following tags are set by calling the appropriate   In addition, the following tags are set by calling the appropriate 
 lonnet function: 'language', 'cprtag', 'mimetag'.  lonnet function: 'language', 'copyrighttag', 'mimetag'.
   
 The 'title' field is set to "Untitled" if the title field is blank.  The 'title' field is set to "Untitled" if the title field is blank.
   
Line 1277  sub parse_raw_result { Line 2530  sub parse_raw_result {
     # Check for a comma - if it is there then we do not need to unescape the      # Check for a comma - if it is there then we do not need to unescape the
     # string.  There seems to be some kind of problem with some items in      # string.  There seems to be some kind of problem with some items in
     # the database - the entire string gets sent out unescaped...?      # the database - the entire string gets sent out unescaped...?
     unless ($result =~ /,/) {  #    unless ($result =~ /,/) {
         $result = &Apache::lonnet::unescape($result);  #        $result = &Apache::lonnet::unescape($result);
     }  #    }
     my @fields=map {  # conclude from self to others regarding fields
         &Apache::lonnet::unescape($_);      my %Fields=&Apache::lonmeta::metadata_col_to_hash(
     } (split(/\,/,$result));   map {
     my ($title,$author,$subject,$url,$keywords,$version,   &Apache::lonnet::unescape($_);
         $notes,$abstract,$mime,$lang,   } (split(/\,/,$result))
         $creationdate,$lastrevisiondate,$owner,$copyright)=@fields;        );
     my %Fields =   # prettier display
         ( title     => &Apache::lonnet::unescape($title),  
           author    => &Apache::lonnet::unescape($author),  
           subject   => &Apache::lonnet::unescape($subject),  
           url       => &Apache::lonnet::unescape($url),  
           keywords  => &Apache::lonnet::unescape($keywords),  
           version   => &Apache::lonnet::unescape($version),  
           notes     => &Apache::lonnet::unescape($notes),  
           abstract  => &Apache::lonnet::unescape($abstract),  
           mime      => &Apache::lonnet::unescape($mime),  
           lang      => &Apache::lonnet::unescape($lang),  
           owner     => &Apache::lonnet::unescape($owner),  
           copyright => &Apache::lonnet::unescape($copyright),  
           creationdate     => &Apache::lonnet::unescape($creationdate),  
           lastrevisiondate => &Apache::lonnet::unescape($lastrevisiondate)  
         );  
     $Fields{'language'} =       $Fields{'language'} = 
         &Apache::loncommon::languagedescription($Fields{'lang'});          &Apache::loncommon::languagedescription($Fields{'language'});
     $Fields{'copyrighttag'} =      $Fields{'copyrighttag'} =
         &Apache::loncommon::copyrightdescription($Fields{'copyright'});          &Apache::loncommon::copyrightdescription($Fields{'copyright'});
     $Fields{'mimetag'} =      $Fields{'mimetag'} =
         &Apache::loncommon::filedescription($Fields{'mime'});          &Apache::loncommon::filedescription($Fields{'mime'});
       if ($Fields{'author'}=~/^(\s*|error)$/) {
           $Fields{'author'}="Unknown Author";
       }
     # Put spaces in the keyword list, if needed.      # Put spaces in the keyword list, if needed.
     $Fields{'keywords'}=~ s/,([A-z])/, $1/g;       $Fields{'keywords'}=~ s/,([A-z])/, $1/g; 
     if ($Fields{'title'}=~ /^\s*$/ ) {       if ($Fields{'title'}=~ /^\s*$/ ) { 
         $Fields{'title'}='Untitled';           $Fields{'title'}='Untitled'; 
     }      }
     unless ($ENV{'user.adv'}) {      unless ($ENV{'user.adv'}) {
           # do not show descriptive information to non-advanced users
         $Fields{'keywords'} = '- not displayed -';          $Fields{'keywords'} = '- not displayed -';
         $Fields{'notes'}    = '- not displayed -';          $Fields{'notes'}    = '- not displayed -';
         $Fields{'abstract'} = '- not displayed -';          $Fields{'abstract'} = '- not displayed -';
Line 1403  Checked for existance & 'edit' mode. Line 2645  Checked for existance & 'edit' mode.
   
 =item 'form.form'  =item 'form.form'
   
   Contains the name of the form that has the input fields to set
   
 =item 'form.element'  =item 'form.element'
   
   the name of the input field to put the URL into
   
   =item 'form.titleelement'
   
   the name of the input field to put the title into
   
 =back  =back
   
 =cut  =cut
Line 1412  Checked for existance & 'edit' mode. Line 2662  Checked for existance & 'edit' mode.
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub search_results_header {  sub search_results_header {
     my ($mode) = @_;      my ($importbutton,$closebutton) = @_;
     $mode = lc($mode);      my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
     my $title;  
     if ($mode eq 'advanced') {  
         $title = "Advanced Search Results";  
     } elsif ($mode eq 'basic') {  
         $title = "Basic Search Results";  
     }  
     my $result = '';      my $result = '';
     # output beginning of search page      # output beginning of search page
     $result.=<<BEGINNING;  
 <html>  
 <head>  
 <title>$title</title>  
 BEGINNING  
     # conditional output of script functions dependent on the mode in      # conditional output of script functions dependent on the mode in
     # which the search was invoked      # which the search was invoked
     if ($ENV{'form.catalogmode'} eq 'interactive'){      if ($ENV{'form.catalogmode'} eq 'interactive'){
Line 1436  BEGINNING Line 2675  BEGINNING
     function select_data(title,url) {      function select_data(title,url) {
  changeTitle(title);   changeTitle(title);
  changeURL(url);   changeURL(url);
  self.close();   parent.close();
     }      }
     function changeTitle(val) {      function changeTitle(val) {
  if (opener.inf.document.forms.resinfo.elements.t) {   if (parent.opener.inf.document.forms.resinfo.elements.t) {
     opener.inf.document.forms.resinfo.elements.t.value=val;      parent.opener.inf.document.forms.resinfo.elements.t.value=val;
  }   }
     }      }
     function changeURL(val) {      function changeURL(val) {
  if (opener.inf.document.forms.resinfo.elements.u) {   if (parent.opener.inf.document.forms.resinfo.elements.u) {
     opener.inf.document.forms.resinfo.elements.u.value=val;      parent.opener.inf.document.forms.resinfo.elements.u.value=val;
  }   }
     }      }
 </script>  </script>
Line 1453  SCRIPT Line 2692  SCRIPT
         } elsif ($ENV{'form.mode'} eq 'edit') {          } elsif ($ENV{'form.mode'} eq 'edit') {
             my $form = $ENV{'form.form'};              my $form = $ENV{'form.form'};
             my $element = $ENV{'form.element'};              my $element = $ENV{'form.element'};
               my $titleelement = $ENV{'form.titleelement'};
       my $changetitle;
       if (!$titleelement) {
    $changetitle='function changeTitle(val) {}';
       } else {
       $changetitle=<<END;
   function changeTitle(val) {
       if (parent.targetwin.document) {
           parent.targetwin.document.forms["$form"].elements["$titleelement"].value=val;
       } else {
    var url = 'forms[\"$form\"].elements[\"$titleelement\"].value';
           alert("Unable to transfer data to "+url);
       }
   }
   END
               }
   
             $result.=<<SCRIPT;              $result.=<<SCRIPT;
 <script type="text/javascript">  <script type="text/javascript">
 function select_data(title,url) {  function select_data(title,url) {
     changeURL(url);      changeURL(url);
     self.close();      changeTitle(title);
 }      parent.close();
 function changeTitle(val) {  
 }  }
   $changetitle
 function changeURL(val) {  function changeURL(val) {
     if (window.opener.document) {      if (parent.targetwin.document) {
         window.opener.document.forms["$form"].elements["$element"].value=val;          parent.targetwin.document.forms["$form"].elements["$element"].value=val;
     } else {      } else {
  var url = 'forms[\"$form\"].elements[\"$element\"].value';   var url = 'forms[\"$form\"].elements[\"$element\"].value';
         alert("Unable to transfer data to "+url);          alert("Unable to transfer data to "+url);
Line 1475  SCRIPT Line 2731  SCRIPT
     }      }
     $result.=<<SCRIPT if $ENV{'form.catalogmode'} eq 'groupsearch';      $result.=<<SCRIPT if $ENV{'form.catalogmode'} eq 'groupsearch';
 <script type="text/javascript">  <script type="text/javascript">
     function select_data(title,url) {      function queue(checkbox_num,val) {
 // alert('DEBUG: Should be storing '+title+' and '+url);          if (document.forms.results.returnvalues.length != "undefined" &&
     }              typeof(document.forms.results.returnvalues.length) == "number") {
     function queue(val) {              if (document.forms.results.returnvalues[checkbox_num].checked) {
  if (eval("document.forms.results.returnvalues["+val+"].checked")) {                  parent.statusframe.document.forms.statusform.elements.Queue.value +='1a'+val+'b';
     document.forms.results.acts.value+='1a'+val+'b';              } else {
  }                  parent.statusframe.document.forms.statusform.elements.Queue.value +='0a'+val+'b';
  else {              }
     document.forms.results.acts.value+='0a'+val+'b';          } else {
  }              if (document.forms.results.returnvalues.checked) {
                   parent.statusframe.document.forms.statusform.elements.Queue.value +='1a'+val+'b';
               } else {
                   parent.statusframe.document.forms.statusform.elements.Queue.value +='0a'+val+'b';
               }
           }
     }      }
     function select_group() {      function select_group() {
  window.location=   parent.window.location=
     "/adm/groupsort?mode=$ENV{'form.mode'}&catalogmode=groupsearch&acts="+      "/adm/groupsort?mode=$ENV{'form.mode'}&catalogmode=groupsearch&acts="+
     document.forms.results.acts.value;      parent.statusframe.document.forms.statusform.elements.Queue.value;
     }  
 </script>  
 SCRIPT  
     $result.=<<SCRIPT;  
 <script type="text/javascript">  
     function displayinfo(val) {  
  popwin.document.forms.popremain.sdetails.value=val;  
     }  
     function openhelp(val) {  
  openhelpwin=open('/adm/help/searchcat.html','helpscreen',  
      'scrollbars=1,width=400,height=300');  
  openhelpwin.focus();  
     }  
     function abortsearch(val) {  
  popwin.close();  
     }      }
 </script>  </script>
 SCRIPT  SCRIPT
     $result.=<<END;      $result.=<<END;
 </head>  </head>
 <body bgcolor="#ffffff">  $bodytag
 <img align=right src=/adm/lonIcons/lonlogos.gif>  <form name="results" method="post" action="" >
 <h1>$title</h1>  <input type="hidden" name="Queue" value="" />
   $importbutton
 END  END
     return $result;      return $result;
 }  }
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
   sub search_status_header {
       my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
       return <<ENDSTATUS;
   <html><head><title>Search Status</title></head>
   $bodytag
   <h3>Search Status</h3>
   Sending search request to LON-CAPA servers.<br />
   ENDSTATUS
   }
   
 =pod  sub results_link {
       my $basic_link   = "/adm/searchcat?"."&table=".$ENV{'form.table'}.
 =item &make_popwin()          "&persistent_db_id=".$ENV{'form.persistent_db_id'};
       my $results_link = $basic_link."&phase=results".
 Returns html with javascript in it to open up the status window.          "&pause=1"."&start=1";
       return $results_link;
 =cut  }
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub make_popwin {  sub print_frames_interface {
     my %rhash = @_;      my $r = shift;
     my $servernum=(keys %rhash);      my $basic_link = "/adm/searchcat?"."&table=".$ENV{'form.table'}.
     my $hcinit;          "&persistent_db_id=".$ENV{'form.persistent_db_id'};
     my $grid="'<br />'+\n";      my $run_search_link = $basic_link."&phase=run_search";
     # $sn is the server number, used ONLY to make sure we have      my $results_link = &results_link();
     # rows of 10 each.  No longer used to index images.      my $result = <<"ENDFRAMES";
     my $sn=1;  <html>
     foreach my $sk (sort keys %rhash) {  <head>
  # '<a href="  <script>
  $grid.="'<a href=\"";  var targetwin = opener;
  # javascript:displayinfo('+  var queue = '';
  $grid.="javascript:opener.displayinfo('+";  
  # "'"+'key  
  $grid.="\"'\"+'";  
  $grid.=$sk;  
  my $hc;  
  if ($rhash{$sk} eq 'con_lost') {  
     $hc="BAD CONNECTION, CONTACT SYSTEM ADMINISTRATOR ";  
  }  
  else {  
     $hc="'+\"'\"+\"+hc['$sk']+\"+\"'\"+'";  
     $hcinit.="hc[\"$sk\"]=\"not yet connected...\";";  
  }  
  $grid.=" hitcount=".$hc;  
  $grid.=" domain=".$Apache::lonnet::hostdom{$sk};  
  $grid.=" IP=".$Apache::lonnet::hostip{$sk};  
  # '+"'"+'">'+  
  $grid.="'+\"'\"+')\">'+";  
  $grid.="\n";  
  $grid.="'<img border=\"0\" name=\"img_".$Apache::lonnet::hostdom{$sk}.  
             '_'.$sk."\" src=\"/adm/lonIcons/srvnull.gif\" alt=\"".$sk.  
                 "\" /></a>'+\n";  
  $grid.="'<br />'+\n" unless $sn%10;  
         $sn++;  
     }  
     my $result.=<<ENDPOP;  
 <script type="text/javascript">  
     popwin=open('','popwin','scrollbars=1,width=400,height=220');  
     popwin.focus();  
     popwin.document.writeln('<'+'html>');  
     popwin.document.writeln('<'+'head>');  
     popwin.document.writeln('<'+'script>');  
     popwin.document.writeln('hc=new Array();$hcinit');  
     popwin.document.writeln('<'+'/script>');  
     popwin.document.writeln('<'+'/head>'+  
         '<'+'body bgcolor="#FFFFFF">'+  
  '<'+'image name="whirly" align="right" src="/adm/lonIcons/'+  
  'lonanim.gif" '+  
  'alt="animated logo" />'+  
  '<'+'h3>Search Results Progress<'+'/h3>'+  
         '<'+'form name="popremain">'+  
         '<'+'tt>'+  
  '<'+'br clear="all"/><i>PLEASE BE PATIENT</i>'+  
  '<'+'br />SCANNING $servernum SERVERS'+  
  '<'+'br clear="all" />Number of record hits found '+  
  '<'+'input type="text" size="10" name="numhits"'+  
  ' value="0" />'+  
  '<'+'br clear="all" />Time elapsed '+  
  '<'+'input type="text" size="10" name="elapsetime"'+  
  ' value="0" />'+  
  '<'+'br />'+  
  'SERVER GRID (click on any cell for details)'+  
         $grid  
         '<'+'br />'+  
  'Server details '+  
  '<'+'input type="text" size="35" name="sdetails"'+  
  ' value="" />'+  
  '<'+'br />'+  
  ' <'+'input type="button" name="button"'+  
  ' value="close this window" '+  
  ' onClick="javascript:opener.abortsearch()" />'+  
  ' <'+'input type="button" name="button"'+  
  ' value="help" onClick="javascript:opener.openhelp()" />'+  
  '<'+'/tt>'+  
         '<'+'/form>'+  
         '<'+'/body><'+'/html>');  
     popwin.document.close();  
 </script>  </script>
 ENDPOP  <title>LON-CAPA Digital Library Search Results</title>
     return $result;  </head>
   <frameset rows="150,*">
       <frame name="statusframe"  src="$run_search_link">
       <frame name="resultsframe" src="$results_link">
   </frameset>
   </html>
   ENDFRAMES
   
       $r->print($result);
       return;
 }  }
   
 ######################################################################  ######################################################################
Line 1635  extra custom metadata to show. Line 2834  extra custom metadata to show.
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub detailed_citation_view {  sub detailed_citation_view {
     my %values = @_;      my ($prefix,%values) = @_;
       my $icon=&Apache::loncommon::icon($values{'url'});
     my $result=<<END;      my $result=<<END;
 <h3><a href="http://$ENV{'HTTP_HOST'}$values{'url'}"   <b>$prefix<img src="$icon" /><a href="http://$ENV{'HTTP_HOST'}$values{'url'}" 
     target='search_preview'>$values{'title'}</a></h3>      target='search_preview'>$values{'title'}</a></b>
 <p>  <p>
 <b>$values{'author'}</b>, <i>$values{'owner'}</i><br />  <b>$values{'author'}</b>, <i>$values{'owner'}</i><br />
   
Line 1647  sub detailed_citation_view { Line 2847  sub detailed_citation_view {
 <b>Notes:         </b> $values{'notes'}<br />  <b>Notes:         </b> $values{'notes'}<br />
 <b>MIME Type:     </b> $values{'mimetag'}<br />  <b>MIME Type:     </b> $values{'mimetag'}<br />
 <b>Language:      </b> $values{'language'}<br />  <b>Language:      </b> $values{'language'}<br />
 <b>Copyright/Distribution:</b> $values{'cprtag'}<br />  <b>Copyright/Distribution:</b> $values{'copyrighttag'}<br />
 </p>  </p>
 $values{'extrashow'}  $values{'extrashow'}
 <p>  <p>
 $values{'shortabstract'}  $values{'shortabstract'}
 </p>  </p>
   <hr align='left' width='200' noshade />
 END  END
     return $result;      return $result;
 }  }
Line 1665  END Line 2866  END
 =item &summary_view()   =item &summary_view() 
   
 =cut  =cut
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub summary_view {  sub summary_view {
     my %values = @_;      my ($prefix,%values) = @_;
       my $icon=&Apache::loncommon::icon($values{'url'});
     my $result=<<END;      my $result=<<END;
 <a href="http://$ENV{'HTTP_HOST'}$values{'url'}"   $prefix<img src="$icon" /><a href="http://$ENV{'HTTP_HOST'}$values{'url'}" 
    target='search_preview'>$values{'author'}</a><br />     target='search_preview'>$values{'author'}</a><br />
 $values{'title'}<br />  $values{'title'}<br />
 $values{'owner'} -- $values{'lastrevisiondate'}<br />  $values{'owner'} -- $values{'lastrevisiondate'}<br />
 $values{'copyrighttag'}<br />  $values{'copyrighttag'}<br />
 $values{'extrashow'}  $values{'extrashow'}
 </p>  </p>
   <hr align='left' width='200' noshade />
 END  END
     return $result;      return $result;
 }  }
Line 1687  END Line 2889  END
   
 =pod   =pod 
   
   =item &compact_view() 
   
   =cut
   
   ######################################################################
   ######################################################################
   sub compact_view {
       my ($prefix,%values) = @_;
       my $icon=&Apache::loncommon::icon($values{'url'});
       my $result=<<END;
   $prefix <img src="$icon" /> <a href="http://$ENV{'HTTP_HOST'}$values{'url'}"  target='search_preview'>
   $values{'title'}</a>
   <b>$values{'author'}</b><br />
   END
       return $result;
   }
   
   
   ######################################################################
   ######################################################################
   
   =pod 
   
 =item &fielded_format_view()   =item &fielded_format_view() 
   
 =cut  =cut
Line 1694  END Line 2919  END
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub fielded_format_view {  sub fielded_format_view {
     my %values = @_;      my ($prefix,%values) = @_;
       my $icon=&Apache::loncommon::icon($values{'url'});
     my $result=<<END;      my $result=<<END;
   $prefix <img src="$icon" />
 <b>URL: </b> <a href="http://$ENV{'HTTP_HOST'}$values{'url'}"   <b>URL: </b> <a href="http://$ENV{'HTTP_HOST'}$values{'url'}" 
               target='search_preview'>$values{'url'}</a>                target='search_preview'>$values{'url'}</a>
 <br />  <br />
Line 1714  sub fielded_format_view { Line 2941  sub fielded_format_view {
 <b>Abstract:</b> $values{'shortabstract'}<br />  <b>Abstract:</b> $values{'shortabstract'}<br />
 $values{'extrashow'}  $values{'extrashow'}
 </p>  </p>
   <hr align='left' width='200' noshade />
 END  END
     return $result;      return $result;
 }  }
Line 1732  END Line 2960  END
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub xml_sgml_view {  sub xml_sgml_view {
     my %values = @_;      my ($prefix,%values) = @_;
     my $result=<<END;      my $result=<<END;
   $prefix
 <pre>  <pre>
 &lt;LonCapaResource&gt;  &lt;LonCapaResource&gt;
 &lt;url&gt;$values{'url'}&lt;/url&gt;  &lt;url&gt;$values{'url'}&lt;/url&gt;
Line 1747  sub xml_sgml_view { Line 2976  sub xml_sgml_view {
 &lt;mimetag&gt;$values{'mimetag'}&lt;/mimetag&gt;  &lt;mimetag&gt;$values{'mimetag'}&lt;/mimetag&gt;
 &lt;/mimeInfo&gt;  &lt;/mimeInfo&gt;
 &lt;languageInfo&gt;  &lt;languageInfo&gt;
 &lt;language&gt;$values{'lang'}&lt;/language&gt;  &lt;language&gt;$values{'language'}&lt;/language&gt;
 &lt;languagetag&gt;$values{'language'}&lt;/languagetag&gt;  &lt;languagetag&gt;$values{'languagetag'}&lt;/languagetag&gt;
 &lt;/languageInfo&gt;  &lt;/languageInfo&gt;
 &lt;creationdate&gt;$values{'creationdate'}&lt;/creationdate&gt;  &lt;creationdate&gt;$values{'creationdate'}&lt;/creationdate&gt;
 &lt;lastrevisiondate&gt;$values{'lastrevisiondate'}&lt;/lastrevisiondate&gt;  &lt;lastrevisiondate&gt;$values{'lastrevisiondate'}&lt;/lastrevisiondate&gt;
Line 1762  sub xml_sgml_view { Line 2991  sub xml_sgml_view {
 &lt;/LonCapaResource&gt;  &lt;/LonCapaResource&gt;
 </pre>  </pre>
 $values{'extrashow'}  $values{'extrashow'}
   <hr align='left' width='200' noshade />
 END  END
     return $result;      return $result;
 }  }
Line 1794  sub filled { Line 3024  sub filled {
   
 =item &output_blank_field_error()  =item &output_blank_field_error()
   
   Output a complete page that indicates the user has not filled in enough
   information to do a search.
   
   Inputs: $r (Apache request handle), $closebutton, $parms.
   
   Returns: nothing
   
   $parms is extra information to include in the 'Revise search request' link.
   
 =cut  =cut
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub output_blank_field_error {  sub output_blank_field_error {
     my ($r)=@_;      my ($r,$closebutton,$parms,$hidden_fields)=@_;
       my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
     # make query information persistent to allow for subsequent revision      # make query information persistent to allow for subsequent revision
     my $persistent=&make_persistent();  
   
     $r->print(<<BEGINNING);      $r->print(<<BEGINNING);
 <html>  <html>
 <head>  <head>
Line 1810  sub output_blank_field_error { Line 3048  sub output_blank_field_error {
 BEGINNING  BEGINNING
     $r->print(<<RESULTS);      $r->print(<<RESULTS);
 </head>  </head>
 <body bgcolor="#ffffff">  $bodytag
 <img align='right' src='/adm/lonIcons/lonlogos.gif' />  <img align='right' src='/adm/lonIcons/lonlogos.gif' />
 <h1>Search Catalog</h1>  <h1>Search Catalog</h1>
 <form method="post" action="/adm/searchcat">  <form method="post" action="/adm/searchcat">
 $persistent  $hidden_fields
 <input type='button' value='Revise search request'  <a href="/adm/searchcat?$parms&persistent_db_id=$ENV{'form.persistent_db_id'}"
 onClick='this.form.submit();' />  >Revise search request</a>&nbsp;
 $closebutton  $closebutton
 <hr />  <hr />
 <h3>Helpful Message</h3>  <h3>Unactionable search query.</h3>
 <p>  <p>
 Incorrect search query due to blank entry fields.  You did not fill in enough information for the search to be started.
 You need to fill in the relevant  You need to fill in relevant fields on the search page in order 
 fields on the search page in order for a query to be  for a query to be processed.
 processed.  
 </p>  </p>
 </body>  </body>
 </html>  </html>
Line 1840  RESULTS Line 3077  RESULTS
   
 Output a full html page with an error message.  Output a full html page with an error message.
   
   Inputs: 
   
       $r, the request pointer.
       $message, the error message for the user.
       $closebutton, the specialized close button needed for groupsearch.
   
 =cut  =cut
   
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub output_date_error {  sub output_date_error {
     my ($r,$message)=@_;      my ($r,$message,$closebutton,$hidden_fields)=@_;
     # make query information persistent to allow for subsequent revision      # make query information persistent to allow for subsequent revision
     my $persistent=&make_persistent();      my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
   
     $r->print(<<RESULTS);      $r->print(<<RESULTS);
 <html>  <html>
 <head>  <head>
 <title>The LearningOnline Network with CAPA</title>  <title>The LearningOnline Network with CAPA</title>
 </head>  </head>
 <body bgcolor="#ffffff">  $bodytag
 <img align='right' src='/adm/lonIcons/lonlogos.gif' />  <img align='right' src='/adm/lonIcons/lonlogos.gif' />
 <h1>Search Catalog</h1>  <h1>Search Catalog</h1>
 <form method="post" action="/adm/searchcat">  <form method="post" action="/adm/searchcat">
 $persistent  $hidden_fields
 <input type='button' value='Revise search request'  <input type='button' value='Revise search request'
 onClick='this.form.submit();' />  onClick='this.form.submit();' />
 $closebutton  $closebutton
 <hr />  <hr />
 <h3>Helpful Message</h3>  <h3>Error</h3>
 <p>  <p>
 $message  $message
 </p>  </p>
Line 1879  RESULTS Line 3121  RESULTS
   
 =item &start_fresh_session()  =item &start_fresh_session()
   
 Cleans the global %hash by removing all fields which begin with  Cleans the global %groupsearch_db by removing all fields which begin with
 'pre_' or 'store'.  'pre_' or 'store'.
   
 =cut  =cut
Line 1887  Cleans the global %hash by removing all Line 3129  Cleans the global %hash by removing all
 ######################################################################  ######################################################################
 ######################################################################  ######################################################################
 sub start_fresh_session {  sub start_fresh_session {
     delete $hash{'mode_catalog'};      delete $groupsearch_db{'mode_catalog'};
     foreach (keys %hash) {      foreach (keys %groupsearch_db) {
         if ($_ =~ /^pre_/) {          if ($_ =~ /^pre_/) {
             delete $hash{$_};              delete $groupsearch_db{$_};
         }          }
         if ($_ =~ /^store/) {          if ($_ =~ /^store/) {
     delete $hash{$_};      delete $groupsearch_db{$_};
  }   }
     }      }
 }  }
   
 ######################################################################  1;
 ######################################################################  
   
 =pod   
   
 =item &popwin_js() send javascript to popwin  
   
 =cut  
   
 ######################################################################  sub cleanup {
 ######################################################################      if (tied(%groupsearch_db)) {
 sub popwin_js {          unless (untie(%groupsearch_db)) {
     # Print javascript out to popwin, but make sure we dont generate    &Apache::lonnet::logthis('Failed cleanup searchcat: groupsearch_db');
     # any javascript errors in doing so.          }
     my ($r,$text) = @_;  
     $r->print(<<"END");  
 <script type="text/javascript">  
     if (! popwin.closed) {  
  $text  
     }      }
 </script>      &untiehash();
 END      &Apache::lonmysql::disconnect_from_db();
     $r->rflush();  
 }  }
   
 ######################################################################  
 ######################################################################  
   
 =pod   
   
 =item &popwin_imgupdate()  
   
 Send a given image (and its location) out to the browser.  Takes as   
 input $r, loncapa server id, and an icon URL.  
   
 =cut  
   
 ######################################################################  
 ######################################################################  
 sub popwin_imgupdate {  
     my ($r,$server,$icon) = @_;  
     &popwin_js($r,'popwin.document.img_'.$Apache::lonnet::hostdom{$server}.  
                '_'.$server.'.'.'src="/adm/lonIcons/'.$icon.'";');  
 }      
   
 1;  
   
 __END__  __END__
   
 =pod  =pod
Removed from v.1.130  
changed lines
  Added in v.1.199

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