[BACK]Return to lonsearchcat.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / interface

Diff for /loncom/interface/lonsearchcat.pm between versions 1.58 and 1.120

version 1.58, 2001/03/21 03:37:43 version 1.120, 2002/06/10 23:55:47
Line 1 Line 1
 # The LearningOnline Network  # The LearningOnline Network with CAPA
 # Search Catalog  # Search Catalog
 #  #
 # 03/08/2001 Scott Harrison  # $Id$
 # Scott Harrison: 03/12/2001, 03/13/2001, 03/14/2001, 03/15/2001, 03/19/2001  
 # Scott Harrison: 03/20/2001  
 #  #
 # Functions  # Copyright Michigan State University Board of Trustees
 #  #
 # handler(server reference) : interacts with the Apache server layer  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 #                             (for /adm/searchcat URLs)  #
 # simpletextfield(name,value) : returns HTML formatted string for simple text  # LON-CAPA is free software; you can redistribute it and/or modify
 #                               field  # it under the terms of the GNU General Public License as published by
 # simplecheckbox(name,value) : returns HTML formatted string for simple  # the Free Software Foundation; either version 2 of the License, or
 #                              checkbox  # (at your option) any later version.
 # searchphrasefield(title,name,value) : returns HTML formatted string for  #
 #                                       a search expression phrase field  # LON-CAPA is distributed in the hope that it will be useful,
 # dateboxes(name, defaultmonth, defaultday, defaultyear) : returns HTML  # but WITHOUT ANY WARRANTY; without even the implied warranty of
 #                                                          formatted string  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #                                                          for a calendar date  # GNU General Public License for more details.
 # selectbox(title,name,value,%HASH=options) : returns HTML formatted string for  #
 #                                             a selection box field  # You should have received a copy of the GNU General Public License
 # advancedsearch(server reference, environment reference) : perform a complex  # along with LON-CAPA; if not, write to the Free Software
 #                                  multi-field logical query  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 # filled(field) : determines whether a given field has been filled  #
 # basicsearch(server reference, environment reference) : perform a simple  # /home/httpd/html/adm/gpl.txt
 #                               single-field logical query  #
 # output_blank_field_error(server reference) : outputs a message saying that  # http://www.lon-capa.org/
 #                                              more fields need to be filled in  #
 # output_results(output mode,  # YEAR=2001
 #                server reference,   # 3/8, 3/12, 3/13, 3/14, 3/15, 3/19 Scott Harrison
 #                environment reference,  # 3/20, 3/21, 3/22, 3/26, 3/27, 4/2, 8/15, 8/24, 8/25 Scott Harrison
 #                reply list reference) : outputs results from search  # 10/12,10/14,10/15,10/16,11/28,11/29,12/10,12/12,12/16 Scott Harrison
 # build_SQL_query(field name, logic) : builds a SQL query string from a  # YEAR=2002
 #                                      logical expression with AND/OR keywords  # 1/17 Scott Harrison
 # recursive_SQL_query_build(field name, reverse notation expression) :   #
 #                 builds a SQL query string from a reverse notation expression  ###
 #                 logical expression with AND/OR keywords  
   ###############################################################################
   ##                                                                           ##
   ## ORGANIZATION OF THIS PERL MODULE                                          ##
   ##                                                                           ##
   ## 1. Modules used by this module                                            ##
   ## 2. Choices for different output views (detailed, summary, xml, etc)       ##
   ## 3. BEGIN block (to be run once after compilation)                         ##
   ## 4. Handling routine called via Apache and mod_perl                        ##
   ## 5. 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);
 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 Apache::loncommon();
   
   # ---------------------------------------- variables used throughout the module
   
 my %language;  # -- information holders
 my $scrout;  my %hostdomains; # matches host name to host domain
 my %metadatafields;  my %hostips; # matches host name to host ip
 my %cprtag;  my %hitcount; # stores number of hits per host
 my %mimetag;  
 my $closebutton;  # -- 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
   my $hidden;
   
   # -- miscellaneous variables
   my $scrout; # string that holds portions of the screen output
   my $yourself; # allows for quickly limiting to oneself
   my %hash;
   
   # ------------------------------------------ choices for different output views
   # Detailed Citation View ---> sub detailed_citation_view
   # Summary View ---> sub summary_view
   # Fielded Format ---> sub fielded_format_view
   # XML/SGML ---> sub xml_sgml_view
 my $basicviewselect=<<END;  my $basicviewselect=<<END;
 <select name='basicviewselect'>  <select name='basicviewselect'>
 <option value='Detailed Citation View'>Detailed Citation View</option>  <option value='Detailed Citation View' selected="true">
   Detailed Citation View</option>
 <option value='Summary View'>Summary View</option>  <option value='Summary View'>Summary View</option>
 <option value='Fielded Format'>Fielded Format</option>  <option value='Fielded Format'>Fielded Format</option>
 <option value='XML/SGML'>XML/SGML</option>  <option value='XML/SGML'>XML/SGML</option>
Line 62  my $basicviewselect=<<END; Line 91  my $basicviewselect=<<END;
 END  END
 my $advancedviewselect=<<END;  my $advancedviewselect=<<END;
 <select name='advancedviewselect'>  <select name='advancedviewselect'>
 <option value='Detailed Citation View'>Detailed Citation View</option>  <option value='Detailed Citation View' selected="true">
   Detailed Citation View</option>
 <option value='Summary View'>Summary View</option>  <option value='Summary View'>Summary View</option>
 <option value='Fielded Format'>Fielded Format</option>  <option value='Fielded Format'>Fielded Format</option>
 <option value='XML/SGML'>XML/SGML</option>  <option value='XML/SGML'>XML/SGML</option>
 </select>  </select>
 END  END
   
   # ----------------------------------------------------------------------- BEGIN
   BEGIN {
       {
    my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
    '/hosts.tab');
    while (<$fh>) {
       $_=~/(\w+?)\:(\w+?)\:(\w+?)\:(.*)/; chomp;
       if ($3 eq 'library') {
    $hostdomains{$1}=$2;
    $hostips{$1}=$4;
       }
    }
       }
   }
   
   #------------------------------------------------------------- global variables
   my $diropendb = "";
   my $domain = "";
   
   # ----------------------------- Handling routine called via Apache and mod_perl
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
       untie %hash;
 # -------------------------------------- see if called from an interactive mode  
     map {  
        my ($name, $value) = split(/=/,$_);  
        $value =~ tr/+/ /;  
        $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;  
        if ($name eq 'catalogmode') {  
    $ENV{'form.'.$name}=$value;  
        }  
     } (split(/&/,$ENV{'QUERY_STRING'}));  
   
     $r->content_type('text/html');      $r->content_type('text/html');
     $r->send_http_header;      $r->send_http_header;
     return OK if $r->header_only;      return OK if $r->header_only;
   
     %metadatafields=();      $domain  = $r->dir_config('lonDefDomain');
       $diropendb= "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_searchcat.db";
   
     my $hidden='';      &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
     $hidden=<<END if $ENV{'form.catalogmode'} eq 'interactive';               ['catalogmode','launch','acts','mode','form','element']);
 <input type='hidden' name='catalogmode' value='interactive'>  
 END  
   
     $closebutton=<<END if $ENV{'form.catalogmode'} eq 'interactive';      if ($ENV{'form.launch'} eq '1') {
 <input type="button" name="close" value="CLOSE" onClick="self.close()">   if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
 END      &start_fresh_session();
       untie %hash;
    }
    else {
       $r->print('<html><head></head><body>Unable to tie hash to db '.
         'file</body></html>');
       return OK;
    }
       }
   
 # ------------------------------------------------ First, check out environment  # --------------------------- Produce some output, so people know it is working
     $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'};  
   
 # --------------------------------- Compute various listings of metadata values      $r->print("\n");
           $r->rflush;
     %language=();  
     $language{'any'}='Any language';  
     {  
  my $fh=Apache::File->new($r->dir_config('lonTabDir').'/language.tab');  
  map {  
     $_=~/(\w+)\s+([\w\s\-]+)/; chomp;  
     $language{$1}=$2;  
  } <$fh>;  
     }  
   
     %cprtag=();  # ----------------------------------- configure dynamic components of interface
     $cprtag{'any'}='Any copyright/distribution';  
     {  
  my $fh=Apache::File->new($r->dir_config('lonIncludes').'/copyright.tab');  
  map {  
     $_=~/(\w+)\s+([\w\s\-]+)/; chomp;  
     $cprtag{$1}=$2;  
  } <$fh>;  
     }  
   
     %mimetag=();      if ($ENV{'form.catalogmode'} eq 'interactive') {
     $mimetag{'any'}='Any type';   $hidden="<input type='hidden' name='catalogmode' value='interactive'>".
     {      "\n";
  my $fh=Apache::File->new($r->dir_config('lonTabDir').'/filetypes.tab');          $closebutton="<input type='button' name='close' value='CLOSE' ".
  map {      "onClick='self.close()'>"."\n";
     $_=~/(\w+)\s+(\w+)\s+([\w\s\-]+)/; chomp;      }
     $mimetag{$1}=".$1 $3";      elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
  } <$fh>;   $hidden=<<END;
   <input type='hidden' name='catalogmode' value='groupsearch'>
   END
           $closebutton=<<END;
   <input type='button' name='close' value='CLOSE' onClick='self.close()'>
   END
           $importbutton=<<END;
   <input type='button' name='import' value='IMPORT'
   onClick='javascript:select_group()'>
   END
     }      }
       $hidden .= <<END;
   <input type='hidden' name='mode'    value='$ENV{'form.mode'}'>
   <input type='hidden' name='form'    value='$ENV{'form.form'}'>
   <input type='hidden' name='element' value='$ENV{'form.element'}'>
   <input type='hidden' name='date' value='2'>
   END
   # ------------------------------------------------------ Determine current user
       $yourself=$ENV{'user.name'}.'@'.$ENV{'user.domain'};
   
   # --- Now, depending on the interface actions, do one of three things here:
   # --- 1. a basic search
   # --- 2. an advanced search
   # --- 3. output a search interface
   
   # ----------------------------------- See if a search invocation should be done
     if ($ENV{'form.basicsubmit'} eq 'SEARCH') {      if ($ENV{'form.basicsubmit'} eq 'SEARCH') {
  return &basicsearch($r,\%ENV);   untie %hash; return &basicsearch($r,\%ENV);
     }      }
     elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') {      elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') {
  return &advancedsearch($r,\%ENV);   untie %hash; return &advancedsearch($r,\%ENV);
     }      }
   
   # ----------------------------- Else, begin building search interface to output
     $scrout=''; # building a part of screen output      $scrout=''; # building a part of screen output
     $scrout.=&searchphrasefield('Limit by title','title',      $scrout.=&searchphrasefield('Limit by title','title',
  $ENV{'form.title'});   $ENV{'form.title'});
Line 155  END Line 209  END
     $scrout.=&searchphrasefield('Limit by URL','url',      $scrout.=&searchphrasefield('Limit by URL','url',
  $ENV{'form.url'});   $ENV{'form.url'});
   
     $scrout.=&searchphrasefield('Limit by version','version',  #    $scrout.=&searchphrasefield('Limit by version','version',
  $ENV{'form.version'});  # $ENV{'form.version'});
   
     $scrout.=&searchphrasefield('Limit by notes','notes',      $scrout.=&searchphrasefield('Limit by notes','notes',
  $ENV{'form.notes'});   $ENV{'form.notes'});
Line 164  END Line 218  END
     $scrout.=&searchphrasefield('Limit by abstract','abstract',      $scrout.=&searchphrasefield('Limit by abstract','abstract',
  $ENV{'form.abstract'});   $ENV{'form.abstract'});
   
     $ENV{'form.mime'}='notxxx' unless length($ENV{'form.mime'});      $ENV{'form.mime'}='any' unless length($ENV{'form.mime'});
     $scrout.=&selectbox('Limit by MIME type','mime',      $scrout.=&selectbox('Limit by MIME type','mime',
  $ENV{'form.mime'},%mimetag);   $ENV{'form.mime'},
    'any','Any type',
    \&{Apache::loncommon::filedescriptionex},
    (&Apache::loncommon::fileextensions));
   
     $ENV{'form.language'}='any' unless length($ENV{'form.language'});      $ENV{'form.language'}='any' unless length($ENV{'form.language'});
   
     $scrout.=&selectbox('Limit by language','language',      $scrout.=&selectbox('Limit by language','language',
  $ENV{'form.language'},%language);   $ENV{'form.language'},'any','Any Language',
        \&{Apache::loncommon::languagedescription},
    (&Apache::loncommon::languageids),
    );
   
 # ------------------------------------------------ Compute date selection boxes  # ------------------------------------------------ Compute date selection boxes
     $scrout.=<<CREATIONDATESTART;      $scrout.=<<CREATIONDATESTART;
 <p>  <p>
 <font color="#800000" face="helvetica"><b>LIMIT BY CREATION DATE RANGE:</b>  <font color="#800000" face="helvetica"><b>LIMIT BY CREATION DATE RANGE:</b>
 </font>  </font>
 <br>  <br />
 between:  between:
 CREATIONDATESTART  CREATIONDATESTART
     $scrout.=&dateboxes('creationdatestart',1,1,1976,      $scrout.=&dateboxes('creationdatestart',1,1,1976,
Line 201  CREATIONDATEEND Line 260  CREATIONDATEEND
 <p>  <p>
 <font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:  <font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:
 </b></font>  </b></font>
 <br>between:  <br />between:
 LASTREVISIONDATESTART  LASTREVISIONDATESTART
     $scrout.=&dateboxes('lastrevisiondatestart',1,1,1976,      $scrout.=&dateboxes('lastrevisiondatestart',1,1,1976,
  $ENV{'form.lastrevisiondatestart_month'},   $ENV{'form.lastrevisiondatestart_month'},
Line 220  LASTREVISIONDATEEND Line 279  LASTREVISIONDATEEND
   
     $scrout.=&searchphrasefield('Limit by publisher/owner','owner',      $scrout.=&searchphrasefield('Limit by publisher/owner','owner',
  $ENV{'form.owner'});   $ENV{'form.owner'});
 # $metadatafields{'owner'});  
   
     $ENV{'form.copyright'}='any' unless length($ENV{'form.copyright'});      $ENV{'form.copyright'}='any' unless length($ENV{'form.copyright'});
     $scrout.=&selectbox('Limit by copyright/distribution','copyright',      $scrout.=&selectbox('Limit by copyright/distribution','copyright',
  $ENV{'form.copyright'},%cprtag);   $ENV{'form.copyright'},
    'any','Any copyright/distribution',
    \&{Apache::loncommon::copyrightdescription},
    (&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 OTHER METADATA FIELDS:</b>  <font color="#800000" face="helvetica"><b>LIMIT BY SPECIAL METADATA FIELDS:</b>
 </font>  </font>
 For author-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.<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.=' <i>initial users of this system do not need to worry about this option</i>';  $scrout.=' <i>initial users of this system do not need to worry about this option</i>';
   
       $scrout.=<<CUSTOMSHOW;
   <p>
   <font color="#800000" face="helvetica"><b>SHOW SPECIAL METADATA FIELDS:</b>
   </font>
   Enter in a space-separated list of special metadata fields to show
   in a fielded listing for each record result.
   <br />
   CUSTOMSHOW
   $scrout.=&simpletextfield('customshow',$ENV{'form.customshow'});
   $scrout.=' <i>initial users of this system do not need to worry about this option</i>';
   
 # ---------------------------------------------------------------- Print screen  # ---------------------------------------------------------------- Print screen
     $r->print(<<ENDDOCUMENT);      $r->print(<<ENDDOCUMENT);
 <html>  <html>
 <head>  <head>
 <title>The LearningOnline Network with CAPA</title>  <title>The LearningOnline Network with CAPA</title>
   <script type="text/javascript">
       function openhelp(val) {
    openhelpwin=open('/adm/help/searchcat.html','helpscreen',
        'scrollbars=1,width=600,height=300');
    openhelpwin.focus();
       }
   </script>
 </head>  </head>
 <body bgcolor="#FFFFFF">  <body bgcolor="#FFFFFF">
 <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">
 $hidden  $hidden
 <hr>  <hr />
 <h3>Basic Search</h3>  <h3>Basic Search</h3>
 <p>  <p>
 Enter terms or phrases separated by search operators  Enter terms or phrases separated by search operators
 such as AND or OR then press SEARCH below.  Terms should be specific  such as AND, OR, or NOT then press SEARCH below.  Terms should be specific
 to the title, author, subject, notes, or abstract information associated  to the title, author, subject, notes, or abstract information associated
 with a resource.  with a resource.
 <br>  <br />
 ENDDOCUMENT  ENDDOCUMENT
     $r->print(&simpletextfield('basicexp',$ENV{'form.basicexp'}));      $r->print(&simpletextfield('basicexp',$ENV{'form.basicexp'}));
     $r->print(' ');      $r->print(' ');
     $r->print(&simplecheckbox('titleonly',$ENV{'form.titleonly'}));      $r->print(&simplecheckbox('titleonly',$ENV{'form.titleonly'}));
     $r->print('<font color="#800000">Title only</font> ');      $r->print('<font color="#800000">Title only</font> ');
     $r->print(&simplecheckbox('allversions',$ENV{'form.allversions'}));  #    $r->print(&simplecheckbox('allversions',$ENV{'form.allversions'}));
   # <font color="#800000">Search historic archives</font>
     $r->print(<<ENDDOCUMENT);      $r->print(<<ENDDOCUMENT);
 <font color="#800000">Search historic archives</font>  <br />
 <br>  <input type="submit" name="basicsubmit" value='SEARCH' />
 <input type="submit" name="basicsubmit" value="SEARCH">  <input type="reset" name="reset" value='RESET' />
 <input type="reset" name="reset" value="RESET">  
 $closebutton  $closebutton
 $basicviewselect  $basicviewselect
   <input type="button" value="HELP" onClick="openhelp()" />
 </p>  </p>
 <hr>  <hr />
 <h3>Advanced Search</h3>  <h3>Advanced Search</h3>
 $scrout  $scrout
 <p>  <p>
 <input type="submit" name="advancedsubmit" value="SEARCH">  <input type="submit" name="advancedsubmit" value='SEARCH' />
 <input type="reset" name="reset" value="RESET">  <input type="reset" name="reset" value='RESET' />
 $closebutton  $closebutton
 $advancedviewselect  $advancedviewselect
   <input type="button" value="HELP" onClick="openhelp()" />
 </p>  </p>
 </form>  </form>
 </body>  </body>
Line 288  ENDDOCUMENT Line 370  ENDDOCUMENT
     return OK;      return OK;
 }   } 
   
   # ------------------------------------------------------------- make persistent
   sub make_persistent {
       my $persistent='';
       
       foreach (keys %ENV) {
    if (/^form\./ && !/submit/) {
       my $name=$_;
       my $key=$name;
       $ENV{$key}=~s/\'//g; # do not mess with html field syntax
       $name=~s/^form\.//;
       $persistent.=<<END;
   <input type='hidden' name='$name' value='$ENV{$key}' />
   END
           }
       }
       return $persistent;
   }
   
 # --------------------------------------------------------- Various form fields  # --------------------------------------------------------- Various form fields
   
 sub simpletextfield {  sub simpletextfield {
     my ($name,$value)=@_;      my ($name,$value)=@_;
     return '<input type=text name="'.$name.'" size=20 value="'.$value.'">';      return '<input type=text name=\''.$name.
      '\' size=20 value=\''.$value.'\' />';
 }  }
   
 sub simplecheckbox {  sub simplecheckbox {
     my ($name,$value)=@_;      my ($name,$value)=@_;
     my $checked='';      my $checked='';
     $checked="CHECKED" if $value eq 'on';      $checked="CHECKED" if $value eq 'on';
     return '<input type=checkbox name="'.$name.'" '. $checked . '>';      return '<input type=checkbox name=\''.$name.'\' '. $checked . '>';
 }  }
   
 sub searchphrasefield {  sub searchphrasefield {
     my ($title,$name,$value)=@_;      my ($title,$name,$value)=@_;
     my $instruction=<<END;      my $instruction=<<END;
 Enter terms or phrases separated by search operators such  Enter terms or phrases separated by search operators such
 as AND or OR.  as AND, OR, or NOT.
 END  END
     my $uctitle=uc($title);      my $uctitle=uc($title);
     return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:</b>".      return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:</b>".
    "</FONT> $instruction<br>".     "</FONT> $instruction<br />".
            '<input type=text name="'.$name.'" size=80 value="'.$value.'">';             '<input type=text name="'.$name.'" size=80 value=\''.$value.'\'>';
 }  }
   
 sub dateboxes {  sub dateboxes {
     my ($name,$defaultmonth,$defaultday,$defaultyear,      my ($name,$defaultmonth,$defaultday,$defaultyear,
  $currentmonth,$currentday,$currentyear)=@_;   $currentmonth,$currentday,$currentyear)=@_;
     ($defaultmonth,$defaultday,$defaultyear)=('','','');      ($defaultmonth,$defaultday,$defaultyear)=('','','');
     my $month=<<END;      #
 <select name="${name}_month">      # Day
 <option value='$defaultmonth'> </option>  
 <option value="1">January</option>  
 <option value="2">February</option>  
 <option value="3">March</option>  
 <option value="4">April</option>  
 <option value="5">May</option>  
 <option value="6">June</option>  
 <option value="7">July</option>  
 <option value="8">August</option>  
 <option value="9">September</option>  
 <option value="10">October</option>  
 <option value="11">November</option>  
 <option value="12">December</option>  
 </select>  
 END  
     $month=~s/(\"$currentmonth\")/$1 SELECTED/ if length($currentmonth);  
     my $day=<<END;      my $day=<<END;
 <select name="${name}_day">  <select name="${name}_day">
 <option value='$defaultday'> </option>  <option value='$defaultday'> </option>
 <option value="1">1</option>  
 <option value="2">2</option>  
 <option value="3">3</option>  
 <option value="4">4</option>  
 <option value="5">5</option>  
 <option value="6">6</option>  
 <option value="7">7</option>  
 <option value="8">8</option>  
 <option value="9">9</option>  
 <option value="10">10</option>  
 <option value="11">11</option>  
 <option value="12">12</option>  
 <option value="13">13</option>  
 <option value="14">14</option>  
 <option value="15">15</option>  
 <option value="16">16</option>  
 <option value="17">17</option>  
 <option value="18">18</option>  
 <option value="19">19</option>  
 <option value="20">20</option>  
 <option value="21">21</option>  
 <option value="22">22</option>  
 <option value="23">23</option>  
 <option value="24">24</option>  
 <option value="25">25</option>  
 <option value="26">26</option>  
 <option value="27">27</option>  
 <option value="28">28</option>  
 <option value="29">29</option>  
 <option value="30">30</option>  
 <option value="31">31</option>  
 </select>  
 END  END
       for (my $i = 1; $i<=31; $i++) {
    $day.="<option value=\"$i\">$i</option>\n";
       }
       $day.="</select>\n";
     $day=~s/(\"$currentday\")/$1 SELECTED/ if length($currentday);      $day=~s/(\"$currentday\")/$1 SELECTED/ if length($currentday);
       #
       # Month
       my $month=<<END;
   <select name="${name}_month">
   <option value='$defaultmonth'> </option>
   END
       my $i = 1;
       foreach (qw/January February March April May June 
        July August September October November December /){
    $month .="<option value=\"$i\">$_</option>\n";
    $i++;
       }
       $month.="</select>\n";
       $month=~s/(\"$currentmonth\")/$1 SELECTED/ if length($currentmonth);
       #
       # Year (obviously)
     my $year=<<END;      my $year=<<END;
 <select name="${name}_year">  <select name="${name}_year">
 <option value='$defaultyear'> </option>  <option value='$defaultyear'> </option>
 <option value="1976">1976</option>  
 <option value="1977">1977</option>  
 <option value="1978">1978</option>  
 <option value="1979">1979</option>  
 <option value="1980">1980</option>  
 <option value="1981">1981</option>  
 <option value="1982">1982</option>  
 <option value="1983">1983</option>  
 <option value="1984">1984</option>  
 <option value="1985">1985</option>  
 <option value="1986">1986</option>  
 <option value="1987">1987</option>  
 <option value="1988">1988</option>  
 <option value="1989">1989</option>  
 <option value="1990">1990</option>  
 <option value="1991">1991</option>  
 <option value="1992">1992</option>  
 <option value="1993">1993</option>  
 <option value="1994">1994</option>  
 <option value="1995">1995</option>  
 <option value="1996">1996</option>  
 <option value="1997">1997</option>  
 <option value="1998">1998</option>  
 <option value="1999">1999</option>  
 <option value="2000">2000</option>  
 <option value="2001">2001</option>  
 <option value="2002">2002</option>  
 <option value="2003">2003</option>  
 <option value="2004">2004</option>  
 <option value="2005">2005</option>  
 <option value="2006">2006</option>  
 <option value="2007">2007</option>  
 <option value="2008">2008</option>  
 <option value="2009">2009</option>  
 <option value="2010">2010</option>  
 <option value="2011">2011</option>  
 <option value="2012">2012</option>  
 <option value="2013">2013</option>  
 <option value="2014">2014</option>  
 <option value="2015">2015</option>  
 <option value="2016">2016</option>  
 <option value="2017">2017</option>  
 <option value="2018">2018</option>  
 <option value="2019">2019</option>  
 <option value="2020">2020</option>  
 <option value="2021">2021</option>  
 <option value="2022">2022</option>  
 <option value="2023">2023</option>  
 <option value="2024">2024</option>  
 <option value="2025">2025</option>  
 <option value="2026">2026</option>  
 <option value="2027">2027</option>  
 <option value="2028">2028</option>  
 <option value="2029">2029</option>  
 <option value="2030">2030</option>  
 <option value="2031">2031</option>  
 <option value="2032">2032</option>  
 <option value="2033">2033</option>  
 <option value="2034">2034</option>  
 <option value="2035">2035</option>  
 <option value="2036">2036</option>  
 <option value="2037">2037</option>  
 <option value="2038">2038</option>  
 <option value="2039">2039</option>  
 <option value="2040">2040</option>  
 <option value="2041">2041</option>  
 <option value="2042">2042</option>  
 <option value="2043">2043</option>  
 <option value="2044">2044</option>  
 <option value="2045">2045</option>  
 <option value="2046">2046</option>  
 <option value="2047">2047</option>  
 <option value="2048">2048</option>  
 <option value="2049">2049</option>  
 <option value="2050">2050</option>  
 <option value="2051">2051</option>  
 </select>  
 END  END
       my $maxyear = 2051; 
       for (my $i = 1976; $i<=$maxyear; $i++) {
    $year.="<option value=\"$i\">$i</option>\n";
       }
       $year.="</select>\n";
     $year=~s/(\"$currentyear\")/$1 SELECTED/ if length($currentyear);      $year=~s/(\"$currentyear\")/$1 SELECTED/ if length($currentyear);
     return "$month$day$year";      return "$month$day$year";
 }  }
   
 sub selectbox {  sub selectbox {
     my ($title,$name,$value,%options)=@_;      my ($title,$name,$value,$anyvalue,$anytag,$functionref,@idlist)=@_;
     my $uctitle=uc($title);      my $uctitle=uc($title);
     my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".      my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".
  "</b></font><br>".'<select name="'.$name.'">';   "</b></font><br />".'<select name="'.$name.'">';
     map {      foreach ($anyvalue,@idlist) {
         $selout.='<option value="'.$_.'"';          $selout.='<option value=\''.$_.'\'';
         if ($_ eq $value) { $selout.=' selected'; }          if ($_ eq $value and !/^any$/) {
         $selout.='>'.$options{$_}.'</option>';      $selout.=' selected>'.&{$functionref}($_).'</option>';
     } sort keys %options;   }
    elsif ($_ eq $value and /^$anyvalue$/) {
       $selout.=' selected>'.$anytag.'</option>';
    }
           else {$selout.='>'.&{$functionref}($_).'</option>';}
       }
     return $selout.'</select>';      return $selout.'</select>';
 }  }
   
Line 477  sub advancedsearch { Line 483  sub advancedsearch {
     my %ENV=%{$envhash};      my %ENV=%{$envhash};
   
     my $fillflag=0;      my $fillflag=0;
       # Clean up fields for safety
       for my $field ('title','author','subject','keywords','url','version',
      'creationdatestart_month','creationdatestart_day',
      'creationdatestart_year','creationdateend_month',
      'creationdateend_day','creationdateend_year',
      'lastrevisiondatestart_month','lastrevisiondatestart_day',
      'lastrevisiondatestart_year','lastrevisiondateend_month',
      'lastrevisiondateend_day','lastrevisiondateend_year',
      'notes','abstract','mime','language','owner',
      'custommetadata','customshow') {
    $ENV{"form.$field"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
       }
       foreach ('mode','form','element') {
    # is this required?  Hmmm.
    next unless (exists($ENV{"form.$_"}));
    $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
    $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
       }
       # 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','mime','language','owner',
    'custommetadata') {     'custommetadata') {
Line 484  sub advancedsearch { Line 509  sub advancedsearch {
     $fillflag++;      $fillflag++;
  }   }
     }      }
   
     unless ($fillflag) {      unless ($fillflag) {
  &output_blank_field_error($r);   &output_blank_field_error($r);
  return OK;   return OK;
     }      }
   
   
       # Turn the form input into a SQL-based query
     my $query='';      my $query='';
   
     my @queries;      my @queries;
     # Go through 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 $field ('title','author','subject','notes','abstract','url',
        'keywords','version','owner') {         'keywords','version','owner') {
  if ($ENV{'form.'.$field}) {   if ($ENV{'form.'.$field}) {
     push @queries,&build_SQL_query($field,$ENV{'form.'.$field});      push @queries,&build_SQL_query($field,$ENV{'form.'.$field});
  }   }
     }      }
       # Evaluate option lists
     if ($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'}\")";
     }      }
     if ($ENV{'form.mime'} and $ENV{'form.mime'} ne 'any') {      if ($ENV{'form.mime'} and $ENV{'form.mime'} ne 'any') {
  push @queries,"mime like $ENV{'form.mime'}";   push @queries,"(mime like \"$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'}\")";
     }      }
     if (@queries) {      # Evaluate date windows
  $query=join(" AND ",@queries);      my $datequery=&build_date_queries(
  $query="select * from metadata where $query";   $ENV{'form.creationdatestart_month'},
  my $reply=&Apache::lonnet::metadata_query($query);   $ENV{'form.creationdatestart_day'},
  &output_results('Advanced',$r,$envhash,$query,$reply);   $ENV{'form.creationdatestart_year'},
    $ENV{'form.creationdateend_month'},
    $ENV{'form.creationdateend_day'},
    $ENV{'form.creationdateend_year'},
    $ENV{'form.lastrevisiondatestart_month'},
    $ENV{'form.lastrevisiondatestart_day'},
    $ENV{'form.lastrevisiondatestart_year'},
    $ENV{'form.lastrevisiondateend_month'},
    $ENV{'form.lastrevisiondateend_day'},
    $ENV{'form.lastrevisiondateend_year'},
    );
       # Test to see if date windows are legitimate
       if ($datequery=~/^Incorrect/) {
    &output_date_error($r,$datequery);
    return OK;
     }      }
     else {      elsif ($datequery) {
  &output_results('Advanced',$r,$envhash,$query);   push @queries,$datequery;
     }      }
     return OK;  
 }  
   
 # ---------------------------------------------------- see if a field is filled      # Process form information for custom metadata querying
 sub filled {      my $customquery='';
     my ($field)=@_;      if ($ENV{'form.custommetadata'}) {
     if ($field=~/\S/) {   $customquery=&build_custommetadata_query('custommetadata',
  return 1;        $ENV{'form.custommetadata'});
       }
       my $customshow='';
       if ($ENV{'form.customshow'}) {
    $customshow=$ENV{'form.customshow'};
    $customshow=~s/[^\w\s]//g;
    my @fields=split(/\s+/,$customshow);
    $customshow=join(" ",@fields);
       }
       # Send query statements over the network to be processed by either the SQL
       # database or a recursive scheme of 'grep'-like actions (for custom
       # metadata).
       if (@queries) {
    $query=join(" AND ",@queries);
    $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',$r,$envhash,$customquery,$reply);
     }      }
     else {      elsif ($customquery) {
  return 0;   my $reply; # reply hash reference
    $reply=&Apache::lonnet::metadata_query('',
          $customquery,$customshow);
    &output_results('Advanced',$r,$envhash,$customquery,$reply);
     }      }
       # should not get to this point
       return 'Error.  Should not have gone to this point.';
 }  }
   
 # --------------------------------------------------- Performing a basic search  # --------------------------------------------------- Performing a basic search
 sub basicsearch {  sub basicsearch {
     my ($r,$envhash)=@_;      my ($r,$envhash)=@_;
     my %ENV=%{$envhash};      my %ENV=%{$envhash};
       # Clean up fields for safety
       for my $field ('basicexp') {
    $ENV{"form.$field"}=~s/[^\w\s\(\)\-]//g;
       }
       foreach ('mode','form','element') {
    # is this required?  Hmmm.
    next unless (exists($ENV{"form.$_"}));
    $ENV{"form.$_"}=&Apache::lonnet::unescape($ENV{"form.$_"});
    $ENV{"form.$_"}=~s/[^\w\/\s\(\)\=\-\"\']//g;
       }
   
       # 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);
  return OK;   return OK;
     }      }
   
       # 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'));
       $concatarg='title' if $ENV{'form.titleonly'};
   
       $query=&build_SQL_query('concat('.$concatarg.')',$ENV{'form.'.'basicexp'});
   
       # Get reply (either a hash reference to filehandles or bad connection)
       my $reply=&Apache::lonnet::metadata_query('select * from metadata where '.$query);
   
       # Output search results
   
     $query="select * from metadata where concat($concatarg) like '\%$ENV{'form.basicexp'}\%'";  
     my $reply=&Apache::lonnet::metadata_query($query);  
     &output_results('Basic',$r,$envhash,$query,$reply);      &output_results('Basic',$r,$envhash,$query,$reply);
   
     return OK;      return OK;
 }  }
   
 # ---------------- Message to output when there are not enough fields filled in  # ------------------------------------------------------------- build_SQL_query
 sub output_blank_field_error {  sub build_SQL_query {
     my ($r)=@_;      my ($field_name,$logic_statement)=@_;
     # make query information persistent to allow for subsequent revision      my $q=new Text::Query('abc',
     my $persistent='';    -parse => 'Text::Query::ParseAdvanced',
     map {    -build => 'Text::Query::Build');
  if (/^form\./ && !/submit/) {      $q->prepare($logic_statement);
     my $name=$_;      my $matchexp=${$q}{'matchexp'}; chomp $matchexp;
     my $key=$name;      my $sql_query=&recursive_SQL_query_build($field_name,$matchexp);
     $name=~s/^form\.//;      return $sql_query;
     $persistent.=<<END;  }
 <INPUT TYPE='hidden' NAME='$name' VALUE='$ENV{$key}'>  
 END  
         }  
     } (keys %ENV);  
   
     $r->print(<<BEGINNING);  # ------------------------------------------------- build custom metadata query
 <html>  sub build_custommetadata_query {
 <head>      my ($field_name,$logic_statement)=@_;
 <title>The LearningOnline Network with CAPA</title>      my $q=new Text::Query('abc',
 BEGINNING    -parse => 'Text::Query::ParseAdvanced',
     $r->print(<<RESULTS);    -build => 'Text::Query::BuildAdvancedString');
 </head>      $q->prepare($logic_statement);
 <body bgcolor="#ffffff">      my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};
 <img align=right src=/adm/lonIcons/lonlogos.gif>      # quick fix to change literal into xml tag-matching
 <h1>Search Catalog</h1>      # will eventually have to write a separate builder module
 <form method="post" action="/adm/searchcat">      my $oldmatchexp=$matchexp;
 $persistent      $matchexp=~s/(\w+)\\\=([\w\\\+]+)/\\\<$1\\\>\[\^\\\<\]\*$2\[\^\\\<\]\*\\\<\\\/$1\\\>/g;
 <input type='button' value='Revise search request'      return $matchexp;
 onClick='this.form.submit();'>  }
 $closebutton  
 <hr>  # - Recursively parse a reverse notation expression into a SQL query expression
 <h3>Helpful Message</h3>  sub recursive_SQL_query_build {
 <p>      my ($dkey,$pattern)=@_;
 Incorrect search query due to blank entry fields.      my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
 You need to fill in the relevant      return $pattern unless @matches;
 fields on the search page in order for a query to be      foreach my $match (@matches) {
 processed.   $match=~/\[ (\w+)\s(.*) \]/;
 </p>   my ($key,$value)=($1,$2);
 </body>   my $replacement='';
 </html>   if ($key eq 'literal') {
 RESULTS      $replacement="($dkey like \"\%$value\%\")";
    }
    elsif ($key eq 'not') {
       $value=~s/like/not like/;
   #    $replacement="($dkey not like $value)";
       $replacement="$value";
    }
    elsif ($key eq 'and') {
       $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
       $replacement="($1 AND $2)";
    }
    elsif ($key eq 'or') {
       $value=~/(.*[\"|\)]) ([|\(|\^].*)/;
       $replacement="($1 OR $2)";
    }
    substr($pattern,
          index($pattern,$match),
          length($match),
          $replacement
          );
       }
       &recursive_SQL_query_build($dkey,$pattern);
   }
   
   # ------------------------------------------------------------ Build date query
   sub build_date_queries {
       my ($cmonth1,$cday1,$cyear1,$cmonth2,$cday2,$cyear2,
    $lmonth1,$lday1,$lyear1,$lmonth2,$lday2,$lyear2)=@_;
       my @queries;
       if ($cmonth1 or $cday1 or $cyear1 or $cmonth2 or $cday2 or $cyear2) {
    unless ($cmonth1 and $cday1 and $cyear1 and
    $cmonth2 and $cday2 and $cyear2) {
       return "Incorrect entry for the creation date.  You must specify ".
      "a starting month, day, and year and an ending month, ".
      "day, and year.";
    }
    my $cnumeric1=sprintf("%d%2d%2d",$cyear1,$cmonth1,$cday1);
    $cnumeric1+=0;
    my $cnumeric2=sprintf("%d%2d%2d",$cyear2,$cmonth2,$cday2);
    $cnumeric2+=0;
    if ($cnumeric1>$cnumeric2) {
       return "Incorrect entry for the creation date.  The starting ".
      "date must occur before the ending date.";
    }
    my $cquery="(creationdate BETWEEN '$cyear1-$cmonth1-$cday1' AND '".
              "$cyear2-$cmonth2-$cday2 23:59:59')";
    push @queries,$cquery;
       }
       if ($lmonth1 or $lday1 or $lyear1 or $lmonth2 or $lday2 or $lyear2) {
    unless ($lmonth1 and $lday1 and $lyear1 and
    $lmonth2 and $lday2 and $lyear2) {
       return "Incorrect entry for the last revision date.  You must ".
      "specify a starting month, day, and year and an ending ".
      "month, day, and year.";
    }
    my $lnumeric1=sprintf("%d%2d%2d",$lyear1,$lmonth1,$lday1);
    $lnumeric1+=0;
    my $lnumeric2=sprintf("%d%2d%2d",$lyear2,$lmonth2,$lday2);
    $lnumeric2+=0;
    if ($lnumeric1>$lnumeric2) {
       return "Incorrect entry for the last revision date.  The ".
      "starting date must occur before the ending date.";
    }
    my $lquery="(lastrevisiondate BETWEEN '$lyear1-$lmonth1-$lday1' AND '".
              "$lyear2-$lmonth2-$lday2 23:59:59')";
    push @queries,$lquery;
       }
       if (@queries) {
    return join(" AND ",@queries);
       }
       return '';
 }  }
   
 # ----------------------------- format and output results based on a reply list  # ----------------------------- format and output results based on a reply list
   # There are two windows that this function writes to.  The main search
   # window ("srch") has a listing of the results.  A secondary window ("popwin")
   # gives the status of the network search (time elapsed, number of machines
   # contacted, etc.)
 sub output_results {  sub output_results {
     my ($mode,$r,$envhash,$query,@replylist)=@_;      my $fnum; # search result counter
       my ($mode,$r,$envhash,$query,$replyref)=@_;
     my %ENV=%{$envhash};      my %ENV=%{$envhash};
       my %rhash=%{$replyref};
     my $compiledresult='';      my $compiledresult='';
       my $timeremain=300;
       my $elapsetime=0;
       my $resultflag=0;
       my $tflag=1;
   
     foreach my $reply (@replylist) {      # make query information persistent to allow for subsequent revision
       my $persistent=&make_persistent();
  my @results;  
   
  my $replyfile='';  
  $reply=~/^([\.\w]+)$/; # must do since 'use strict' checks for tainting  
  $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1;  
  $reply=~/(.*?)\_/;  
  my $hostname=$1;  
  sleep 3; # temporary fix, need to check for completion and status  
  {  
     while (1) {  
  last if -e $replyfile;  
  sleep 1;  
     }  
     # QUESTION: how should I handle this error condition..  
     # I'm sure there is syntax elsewhere I can use..  
     my $fh=Apache::File->new($replyfile) or  
  ($r->print('file cannot be opened') and return OK);  
     @results=<$fh>;  
  }  
   
  foreach my $result (@results) {  
     my @fields=map  
                    {&Apache::lonnet::unescape($_)}  
                    (split(/\,/,$result));  
     my ($title,$author,$subject,$url,$keywords,$version,  
  $notes,$abstract,$mime,$lang,  
  $creationdate,$lastrevisiondate,$owner,$copyright)=@fields;  
     my $shortabstract=$abstract;  
     $shortabstract=substr($abstract,0,200) if length($abstract)>200;  
     $fields[7]=$shortabstract;  
     $compiledresult.=<<END;  
 <p>  
 END  
             $compiledresult.=<<END if $ENV{'form.catalogmode'} eq 'interactive';  
 <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"  
 onClick="javascript:select_data('$title','$url')">  
 </font>  
 <br>  
 END  
             my $httphost=$ENV{'HTTP_HOST'};  
   
     my $viewselect;  
     if ($mode eq 'Basic') {  
  $viewselect=$ENV{'form.basicviewselect'};  
     }  
     elsif ($mode eq 'Advanced') {  
  $viewselect=$ENV{'form.advancedviewselect'};  
     }  
   
             if ($viewselect eq 'Detailed Citation View') {  
  $compiledresult.=&detailed_citation_view(@fields,  
  $hostname,$httphost);  
     }  
             elsif ($viewselect eq 'Summary View') {  
  $compiledresult.=&summary_view(@fields,$hostname,$httphost);  
     }  
             elsif ($viewselect eq 'Fielded Format') {  
  $compiledresult.=&fielded_format_view(@fields,$hostname,  
       $httphost);  
     }  
             elsif ($viewselect eq 'XML/SGML') {  
  $compiledresult.=&xml_sgml_view(@fields,$hostname,$httphost);  
     }  
   
         }  
   
  unless ($compiledresult) {  
     $compiledresult="There were no results that matched your query";  
  }  
   
  # make query information persistent to allow for subsequent revision  
  my $persistent='';  
  map {  
     if (/^form\./ && !/submit/) {  
  my $name=$_;  
  my $key=$name;  
  $name=~s/^form\.//;  
  $persistent.=<<END;  
 <INPUT TYPE='hidden' NAME='$name' VALUE='$ENV{$key}'>  
 END  
             }  
  } (keys %ENV);  
   
       # output beginning of search page
  $r->print(<<BEGINNING);   $r->print(<<BEGINNING);
 <html>  <html>
 <head>  <head>
 <title>The LearningOnline Network with CAPA</title>  <title>The LearningOnline Network with CAPA</title>
 BEGINNING  BEGINNING
         $r->print(<<SCRIPT) if $ENV{'form.catalogmode'} eq 'interactive';  
 <script>      # conditional output of script functions dependent on the mode in
       # which the search was invoked
       if ($ENV{'form.catalogmode'} eq 'interactive'){
    if (! exists($ENV{'form.mode'}) || $ENV{'form.mode'} ne 'edit') {
               $r->print(<<SCRIPT) 
   <script type="text/javascript">
     function select_data(title,url) {      function select_data(title,url) {
  changeTitle(title);   changeTitle(title);
  changeURL(url);   changeURL(url);
    self.close();
     }      }
     function changeTitle(val) {      function changeTitle(val) {
  if (opener.inf.document.forms.resinfo.elements.t) {   if (opener.inf.document.forms.resinfo.elements.t) {
Line 711  BEGINNING Line 797  BEGINNING
     }      }
 </script>  </script>
 SCRIPT  SCRIPT
         $r->print(<<RESULTS);          } elsif ($ENV{'form.mode'} eq 'edit') {
               my $form = $ENV{'form.form'};
               my $element = $ENV{'form.element'};
               $r->print(<<SCRIPT) 
   <script type="text/javascript">
   function select_data(title,url) {
       changeURL(url);
       self.close();
   }
   function changeTitle(val) {
   }
   function changeURL(val) {
       if (window.opener.document) {
           window.opener.document.forms["$form"].elements["$element"].value=val;
       } else {
    var url = 'forms[\"$form\"].elements[\"$element\"].value';
           alert("Unable to transfer data to "+url);
       }
   }
   </script>
   SCRIPT
           }
       }
       $r->print(<<SCRIPT) if $ENV{'form.catalogmode'} eq 'groupsearch';
   <script type="text/javascript">
       function select_data(title,url) {
   // alert('DEBUG: Should be storing '+title+' and '+url);
       }
       function queue(val) {
    if (eval("document.forms.results.returnvalues["+val+"].checked")) {
       document.forms.results.acts.value+='1a'+val+'b';
    }
    else {
       document.forms.results.acts.value+='0a'+val+'b';
    }
       }
       function select_group() {
    window.location=
       "/adm/groupsort?mode=$ENV{'form.mode'}&catalogmode=groupsearch&acts="+
       document.forms.results.acts.value;
       }
   </script>
   SCRIPT
       $r->print(<<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
       $r->rflush();
   
       # begin showing the cataloged results
       $r->print(<<CATALOGBEGIN);
 </head>  </head>
 <body bgcolor="#ffffff">  <body bgcolor="#ffffff">
 <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">  CATALOGBEGIN
           $r->print(<<CATALOGCONTROLS);
   <form name='results' method="post" action="/adm/searchcat">
   $hidden
   <input type='hidden' name='acts' value='' />
 <input type='button' value='Revise search request'  <input type='button' value='Revise search request'
 onClick='this.form.submit();'>  onClick='this.form.submit();' />
   $importbutton
 $closebutton  $closebutton
 $persistent  $persistent
 <hr>  <hr />
 <h3>Search Query</h3>  <h3>Search Query</h3>
 RESULTS  CATALOGCONTROLS
     if ($mode eq 'Basic') {      if ($mode eq 'Basic') {
  $r->print(<<RESULTS);   $r->print(<<RESULTS);
 <p>  <p>
Line 739  $query Line 891  $query
 </p>  </p>
 RESULTS  RESULTS
     }      }
  $r->print(<<RESULTS);      $r->print('<h3>Search Results</h3>');
 <h3>Search Results</h3>      $r->rflush();
 $compiledresult      my $servernum=(keys %rhash)+0;
 </body>  
 </html>      # define server grid (shows status of multiple machines)
 RESULTS      my $hcinit;
     }      my $grid="'<br />'+";
 }      $grid.="\n";
       my $sn=1;
       for my $sk (sort keys %rhash) {
    # '<a href="
    $grid.="'<a href=\"";
    # javascript:displayinfo('+
    $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;
    $grid.=" domain=".$hostdomains{$sk};
    $grid.=" IP=".$hostips{$sk};
    # '+"'"+'">'+
    $grid.="'+\"'\"+')\">'+";
    $grid.="\n";
    $grid.="'<img border=\"0\" name=\"img".$sn."\"".
       " src=\"/adm/lonIcons/srvnull.gif\" alt=\"".$sk."\" /></a>'+\n";
    $grid.="'<br />'+\n" unless $sn%10;
           $sn++;
       }
       $r->print(<<ENDPOP);
   <script type="text/javascript">
       popwin=open('','popwin','scrollbars=1,width=400,height=220');
       popwin.focus();
       popwin.document.writeln('<'+'html>');
       popwin.document.writeln('<'+'head>');
       popwin.document.writeln('<'+'script>');
       popwin.document.writeln('hc=new Array();$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>
   ENDPOP
       $r->rflush();
   
 # ------------------------------------------------------------- build_SQL_query      my $servercount=0;
 sub build_SQL_query {      my $hitcountsum=0;
     my ($field_name,$logic_statement)=@_;      my $bloop=$servernum;
     my $q=new Text::Query('abc',      my %orkey;
   -parse => 'Text::Query::ParseAdvanced',    BLOOP: while(1) {
   -build => 'Text::Query::Build');        my $sn=0;
     $q->prepare($logic_statement);        last BLOOP unless $bloop;
     my $matchexp=${$q}{'matchexp'}; chomp $matchexp;        last BLOOP unless $timeremain;
     my $sql_query=&recursive_SQL_query_build($field_name,$matchexp);      RLOOP: foreach my $rkey (sort keys %rhash) {
     return $sql_query;   $sn++;
 }   next RLOOP if $orkey{$rkey};
    $servercount++;
    $tflag=1;
    $compiledresult='';
    my $hostname=$rkey;
    my $reply=$rhash{$rkey};
    my @results;
   
    my $replyfile='';
   
 # - Recursively parse a reverse notation expression into a SQL query expression   if ($reply eq 'con_lost') {
 sub recursive_SQL_query_build {      &popwin_imgupdate($r,$sn,"srvbad.gif");
     my ($dkey,$pattern)=@_;      $bloop--;
     my @matches=($pattern=~/(\[[^\]|\[]*\])/g);      $orkey{$rkey}=1;
     return $pattern unless @matches;  
     foreach my $match (@matches) {  
  $match=~/\[ (\w+)\s(.*) \]/;  
  my ($key,$value)=($1,$2);  
  my $replacement='';  
  if ($key eq 'literal') {  
     $replacement="($dkey like \"\%$value\%\")";  
  }   }
  elsif ($key eq 'and') {   else {
     $value=~/(.*[\"|\)]) ([|\(|\^].*)/;      $reply=~/^([\.\w]+)$/; # must do since 'use strict' checks for tainting
     $replacement="($1 AND $2)";      $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1;
       $reply=~/(.*?)\_/;
       {
    my $temp=0;
         WLOOP: while (1) {
     if (-e $replyfile && $tflag) {
         &popwin_imgupdate($r,$sn,"srvhalf.gif");
         &popwin_js($r,'popwin.hc["'.$rkey.'"]='.
    '"still transferring..."'.';');
         $tflag=0;
     }
     if (-e "$replyfile.end") {
         $bloop--;
         $orkey{$rkey}=1;
         if (-s $replyfile) {
     &popwin_imgupdate($r,$sn,"srvgood.gif");
     my $fh=Apache::File->new($replyfile) or 
         ($r->print('ERROR: file '.
    $replyfile.' cannot be opened') and
          return OK);
     @results=<$fh> if $fh;
     $hitcount{$rkey}=@results+0;
     &popwin_js($r,'popwin.hc["'.$rkey.'"]='.
       $hitcount{$rkey}.';');
     $hitcountsum+=$hitcount{$rkey};
     &popwin_js($r,'popwin.document.forms.popremain.'.
       'numhits.value='.$hitcountsum.';');
         }
         else {
     &popwin_imgupdate($r,$sn,"srvempty.gif");
     &popwin_js($r,'popwin.hc["'.$rkey.'"]=0;');
         }
         last WLOOP;
     }
     if ($temp>1) {
         sleep 1;
         $timeremain--;
         $elapsetime++;
         last WLOOP;
     }
     last WLOOP unless $timeremain;
     sleep 1;
     $timeremain--;
     $elapsetime++;
     &popwin_js($r,"popwin.document.popremain.".
          "elapsetime.value=$elapsetime;");
     $temp++;
         }
       }
       &popwin_js($r,'popwin.document.whirly.'.
          'src="/adm/lonIcons/lonanimend.gif";');
  }   }
  elsif ($key eq 'or') {   my $customshow='';
     $value=~/(.*[\"|\)]) ([|\(|\^].*)/;   my $extrashow='';
     $replacement="($1 OR $2)";   my @customfields;
    if ($ENV{'form.customshow'}) {
       $customshow=$ENV{'form.customshow'};
       $customshow=~s/[^\w\s]//g;
       my @fields=map {"<font color=\"#008000\">$_:</font><!-- $_ -->"} 
       split(/\s+/,$customshow);
       @customfields=split(/\s+/,$customshow);
       if ($customshow) {
    $extrashow="<ul><li>".join("</li><li>",@fields)."</li></ul>\n";
       }
  }   }
  substr($pattern,   my $customdata='';
        index($pattern,$match),   my %customhash;
        length($match),   foreach my $result (@results) {
        $replacement      if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
        );   my $tmp=$result;
    $tmp=~s/^custom\=//;
    my ($k,$v)=map {&Apache::lonnet::unescape($_);
       } split(/\,/,$tmp);
    $customhash{$k}=$v;
       }
    }
    if (keys %hash) {
       untie %hash;
    }
    if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
       if ($ENV{'form.launch'} eq '1') {
    &start_fresh_session();
       }
       foreach my $result (@results) {
    next if $result=~/^custom\=/;
    chomp $result;
    next unless $result;
    my @fields=map
    {&Apache::lonnet::unescape($_)}
    (split(/\,/,$result));
    my ($title,$author,$subject,$url,$keywords,$version,
       $notes,$abstract,$mime,$lang,
       $creationdate,$lastrevisiondate,$owner,$copyright)=@fields;
   
                   unless ($title) { $title='<i>Untitled</i>'; }
    unless ($ENV{'user.adv'}) {
       $keywords='<i>- not displayed -</i>';
       $fields[4]=$keywords;
       $notes='<i>- not displayed -</i>';
       $fields[6]=$notes;
       $abstract='<i>- not displayed -</i>';
       $fields[7]=$abstract;
       $subject='<i>- not displayed -</i>';
       $fields[2]=$subject;
    }
   
    my $shortabstract=$abstract;
    $shortabstract=substr($abstract,0,200).'...' if length($abstract)>200;
    $fields[7]=$shortabstract;
    my $shortkeywords=$keywords;
    $shortkeywords=substr($keywords,0,200).'...' if length($keywords)>200;
    $fields[4]=$shortkeywords;
   
    my $extrashow2=$extrashow;
    if ($extrashow) {
       foreach my $field (@customfields) {
    my $value='';
    if ($customhash{$url}=~/\<${field}[^\>]*\>(.*?)\<\/${field}[^\>]*\>/s) {
               $value=$1;
    }
           $extrashow2=~s/\<\!\-\- $field \-\-\>/ $value/g;
               }
                   }
   
           $compiledresult.=<<END if $compiledresult or $servercount!=$servernum;
   <hr align='left' width='200' noshade />
   END
                   $compiledresult.=<<END;
   <p>
   END
                  if ($ENV{'form.catalogmode'} eq 'interactive') {
      my $titleesc=$title;
      $titleesc=~s/\'/\\'/; # '
   
                      $compiledresult.=<<END if ($ENV{'form.catalogmode'} eq 'interactive');
   <font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
   onClick="javascript:select_data('$titleesc','$url')">
   </font>
   <br />
   END
                   }
                   if ($ENV{'form.catalogmode'} eq 'groupsearch') {
       $fnum+=0;
       $hash{"pre_${fnum}_link"}=$url;
       $hash{"pre_${fnum}_title"}=$title;
       $compiledresult.=<<END;
   <font size='-1'>
   <input type="checkbox" name="returnvalues" value="SELECT"
   onClick="javascript:queue($fnum)" />
   </font>
   <br />
   END
   # <input type="hidden" name="title$fnum" value="$title" />
   # <input type="hidden" name="url$fnum" value="$url" />
                       $fnum++;
    }
           my $httphost=$ENV{'HTTP_HOST'};
   
           my $viewselect;
           if ($mode eq 'Basic') {
       $viewselect=$ENV{'form.basicviewselect'};
    }
           elsif ($mode eq 'Advanced') {
       $viewselect=$ENV{'form.advancedviewselect'};
    }
   
           if ($viewselect eq 'Detailed Citation View') {
       $compiledresult.=&detailed_citation_view(@fields,
    $hostname,$httphost,
    $extrashow2);
    }
                   elsif ($viewselect eq 'Summary View') {
       $compiledresult.=&summary_view(@fields,$hostname,$httphost,
          $extrashow2);
           }
                   elsif ($viewselect eq 'Fielded Format') {
       $compiledresult.=&fielded_format_view(@fields,$hostname,
         $httphost,$extrashow2);
           }
                   elsif ($viewselect eq 'XML/SGML') {
       $compiledresult.=&xml_sgml_view(@fields,$hostname,$httphost,
    $extrashow2);
    }
       
               }
   
               untie %hash;
           }
           else {
       $r->print('<html><head></head><body>Unable to tie hash to db '.
     'file</body></html>');
    }
    if ($compiledresult) {
       $resultflag=1;
    }
   
    $r->print(<<RESULTS);
   $compiledresult
   RESULTS
           my $percent=sprintf('%3.0f',($servercount/$servernum*100));
     }      }
     &recursive_SQL_query_build($dkey,$pattern);    }
       unless ($resultflag) {
           $r->print("\nThere were no results that matched your query\n");
       }
   #    $r->print('<script type="text/javascript">'.'popwin.close()</script>'."\n"); $r->rflush(); 
       $r->print(<<RESULTS);
   </body>
   </html>
   RESULTS
 }  }
   
 # ------------------------------------------------------ Detailed Citation View  # ------------------------------------------------------ Detailed Citation View
Line 794  sub detailed_citation_view { Line 1217  sub detailed_citation_view {
     my ($title,$author,$subject,$url,$keywords,$version,      my ($title,$author,$subject,$url,$keywords,$version,
  $notes,$shortabstract,$mime,$lang,   $notes,$shortabstract,$mime,$lang,
  $creationdate,$lastrevisiondate,$owner,$copyright,   $creationdate,$lastrevisiondate,$owner,$copyright,
  $hostname,$httphost)=@_;   $hostname,$httphost,$extrashow)=@_;
     my $result=<<END;      my $result=<<END;
 <i>$owner</i>, last revised $lastrevisiondate  <i>$owner</i>, last revised $lastrevisiondate
 <h3><A HREF="http://$httphost$url" TARGET='search_preview'>$title</A></h3>  <h3><A HREF="http://$httphost$url" TARGET='search_preview'>$title</A></h3>
 <h3>$author</h3>  <h3>$author</h3>
 </p>  </p>
 <p>  <p>
 <b>Subject:</b> $subject<br>  <b>Subject:</b> $subject<br />
 <b>Keyword(s):</b> $keywords<br>  <b>Keyword(s):</b> $keywords<br />
 <b>Notes:</b> $notes<br>  <b>Notes:</b> $notes<br />
 <b>MIME Type:</b> $mimetag{$mime}<br>  <b>MIME Type:</b>
 <b>Language:</b> $language{$lang}<br>  END
 <b>Copyright/Distribution:</b> $cprtag{$copyright}<br>      $result.=&Apache::loncommon::filedescription($mime);
       $result.=<<END;
   <br />
   <b>Language:</b> 
   END
       $result.=&Apache::loncommon::languagedescription($lang);
       $result.=<<END;
   <br />
   <b>Copyright/Distribution:</b> 
   END
       $result.=&Apache::loncommon::copyrightdescription($copyright);
       $result.=<<END;
   <br />
   </p>
   $extrashow
   <p>
 $shortabstract  $shortabstract
 </p>  </p>
 END  END
Line 818  sub summary_view { Line 1256  sub summary_view {
     my ($title,$author,$subject,$url,$keywords,$version,      my ($title,$author,$subject,$url,$keywords,$version,
  $notes,$shortabstract,$mime,$lang,   $notes,$shortabstract,$mime,$lang,
  $creationdate,$lastrevisiondate,$owner,$copyright,   $creationdate,$lastrevisiondate,$owner,$copyright,
  $hostname,$httphost)=@_;   $hostname,$httphost,$extrashow)=@_;
       my $cprtag=&Apache::loncommon::copyrightdescription($copyright);
     my $result=<<END;      my $result=<<END;
 <a href="http://$httphost$url" TARGET='search_preview'>$author</a><br />  <a href="http://$httphost$url" TARGET='search_preview'>$author</a><br />
 $title<br />  $title<br />
 $owner -- $lastrevisiondate<br />  $owner -- $lastrevisiondate<br />
 $cprtag{$copyright}<br />  $cprtag<br />
   $extrashow
 </p>  </p>
 END  END
     return $result;      return $result;
Line 834  sub fielded_format_view { Line 1274  sub fielded_format_view {
     my ($title,$author,$subject,$url,$keywords,$version,      my ($title,$author,$subject,$url,$keywords,$version,
  $notes,$shortabstract,$mime,$lang,   $notes,$shortabstract,$mime,$lang,
  $creationdate,$lastrevisiondate,$owner,$copyright,   $creationdate,$lastrevisiondate,$owner,$copyright,
  $hostname,$httphost)=@_;   $hostname,$httphost,$extrashow)=@_;
       my $mimetag=&Apache::loncommon::filedescription($mime);
       my $language=&Apache::loncommon::languagedescription($lang);
       my $cprtag=&Apache::loncommon::copyrightdescription($copyright);
     my $result=<<END;      my $result=<<END;
 <b>URL: </b> <A HREF="http://$httphost$url" TARGET='search_preview'>$url</A>  <b>URL: </b> <A HREF="http://$httphost$url" TARGET='search_preview'>$url</A>
 <br />  <br />
Line 843  sub fielded_format_view { Line 1286  sub fielded_format_view {
 <b>Subject:</b> $subject<br />  <b>Subject:</b> $subject<br />
 <b>Keyword(s):</b> $keywords<br />  <b>Keyword(s):</b> $keywords<br />
 <b>Notes:</b> $notes<br />  <b>Notes:</b> $notes<br />
 <b>MIME Type:</b> $mimetag{$mime}<br />  <b>MIME Type:</b> $mimetag<br />
 <b>Language:</b> $language{$lang}<br />  <b>Language:</b> $language<br />
 <b>Creation Date:</b> $creationdate<br />  <b>Creation Date:</b> $creationdate<br />
 <b>Last Revision Date:</b> $lastrevisiondate<br />  <b>Last Revision Date:</b> $lastrevisiondate<br />
 <b>Publisher/Owner:</b> $owner<br />  <b>Publisher/Owner:</b> $owner<br />
 <b>Copyright/Distribution:</b> $cprtag{$copyright}<br />  <b>Copyright/Distribution:</b> $cprtag<br />
 <b>Repository Location:</b> $hostname<br />  <b>Repository Location:</b> $hostname<br />
 <b>Abstract:</b> $shortabstract<br />  <b>Abstract:</b> $shortabstract<br />
   $extrashow
 </p>  </p>
 END  END
     return $result;      return $result;
Line 861  sub xml_sgml_view { Line 1305  sub xml_sgml_view {
     my ($title,$author,$subject,$url,$keywords,$version,      my ($title,$author,$subject,$url,$keywords,$version,
  $notes,$shortabstract,$mime,$lang,   $notes,$shortabstract,$mime,$lang,
  $creationdate,$lastrevisiondate,$owner,$copyright,   $creationdate,$lastrevisiondate,$owner,$copyright,
  $hostname,$httphost)=@_;   $hostname,$httphost,$extrashow)=@_;
       my $cprtag=&Apache::loncommon::copyrightdescription($copyright);
       my $mimetag=&Apache::loncommon::filedescription($mime);
       my $language=&Apache::loncommon::languagedescription($lang);
     my $result=<<END;      my $result=<<END;
 <pre>  <pre>
 &lt;LonCapaResource&gt;  &lt;LonCapaResource&gt;
Line 873  sub xml_sgml_view { Line 1320  sub xml_sgml_view {
 &lt;notes&gt;$notes&lt;/notes&gt;  &lt;notes&gt;$notes&lt;/notes&gt;
 &lt;mimeInfo&gt;  &lt;mimeInfo&gt;
 &lt;mime&gt;$mime&lt;/mime&gt;  &lt;mime&gt;$mime&lt;/mime&gt;
 &lt;mimetag&gt;$mimetag{$mime}&lt;/mimetag&gt;  &lt;mimetag&gt;$mimetag&lt;/mimetag&gt;
 &lt;/mimeInfo&gt;  &lt;/mimeInfo&gt;
 &lt;languageInfo&gt;  &lt;languageInfo&gt;
 &lt;language&gt;$lang&lt;/language&gt;  &lt;language&gt;$lang&lt;/language&gt;
 &lt;languagetag&gt;$language{$lang}&lt;/languagetag&gt;  &lt;languagetag&gt;$language&lt;/languagetag&gt;
 &lt;/languageInfo&gt;  &lt;/languageInfo&gt;
 &lt;creationdate&gt;$creationdate&lt;/creationdate&gt;  &lt;creationdate&gt;$creationdate&lt;/creationdate&gt;
 &lt;lastrevisiondate&gt;$lastrevisiondate&lt;/lastrevisiondate&gt;  &lt;lastrevisiondate&gt;$lastrevisiondate&lt;/lastrevisiondate&gt;
 &lt;owner&gt;$owner&lt;/owner&gt;  &lt;owner&gt;$owner&lt;/owner&gt;
 &lt;copyrightInfo&gt;  &lt;copyrightInfo&gt;
 &lt;copyright&gt;$copyright&lt;/copyright&gt;  &lt;copyright&gt;$copyright&lt;/copyright&gt;
 &lt;copyrighttag&gt;$cprtag{$copyright}&lt;/copyrighttag&gt;  &lt;copyrighttag&gt;$cprtag&lt;/copyrighttag&gt;
 &lt;/copyrightInfo&gt;  &lt;/copyrightInfo&gt;
 &lt;repositoryLocation&gt;$hostname&lt;/repositoryLocation&gt;  &lt;repositoryLocation&gt;$hostname&lt;/repositoryLocation&gt;
 &lt;shortabstract&gt;$shortabstract&lt;/shortabstract&gt;  &lt;shortabstract&gt;$shortabstract&lt;/shortabstract&gt;
 &lt;/LonCapaResource&gt;  &lt;/LonCapaResource&gt;
 </pre>  </pre>
   $extrashow
 END  END
     return $result;      return $result;
 }  }
   
   # ---------------------------------------------------- see if a field is filled
   sub filled {
       my ($field)=@_;
       if ($field=~/\S/ && $field ne 'any') {
    return 1;
       }
       else {
    return 0;
       }
   }
   
   # ---------------- Message to output when there are not enough fields filled in
   sub output_blank_field_error {
       my ($r)=@_;
       # make query information persistent to allow for subsequent revision
       my $persistent=&make_persistent();
   
       $r->print(<<BEGINNING);
   <html>
   <head>
   <title>The LearningOnline Network with CAPA</title>
   BEGINNING
       $r->print(<<RESULTS);
   </head>
   <body bgcolor="#ffffff">
   <img align='right' src='/adm/lonIcons/lonlogos.gif' />
   <h1>Search Catalog</h1>
   <form method="post" action="/adm/searchcat">
   $persistent
   <input type='button' value='Revise search request'
   onClick='this.form.submit();' />
   $closebutton
   <hr />
   <h3>Helpful Message</h3>
   <p>
   Incorrect search query due to blank entry fields.
   You need to fill in the relevant
   fields on the search page in order for a query to be
   processed.
   </p>
   </body>
   </html>
   RESULTS
   }
   
   # ----------------------------------------------------------- Output date error
   sub output_date_error {
       my ($r,$message)=@_;
       # make query information persistent to allow for subsequent revision
       my $persistent=&make_persistent();
   
       $r->print(<<BEGINNING);
   <html>
   <head>
   <title>The LearningOnline Network with CAPA</title>
   BEGINNING
       $r->print(<<RESULTS);
   </head>
   <body bgcolor="#ffffff">
   <img align='right' src='/adm/lonIcons/lonlogos.gif' />
   <h1>Search Catalog</h1>
   <form method="post" action="/adm/searchcat">
   $persistent
   <input type='button' value='Revise search request'
   onClick='this.form.submit();' />
   $closebutton
   <hr />
   <h3>Helpful Message</h3>
   <p>
   $message
   </p>
   </body>
   </html>
   RESULTS
   }
   
   # --------- settings whenever the user causes the search window to be launched
   sub start_fresh_session {
       delete $hash{'mode_catalog'};
       foreach (keys %hash) {
           if ($_ =~ /^pre_/) {
               delete $hash{$_};
           }
           if ($_ =~ /^store/) {
       delete $hash{$_};
    }
       }
   }
   
   # ----------------------------------------------- send javascript to popwin
   sub popwin_js {
       # Print javascript out to popwin, but make sure we dont generate
       # any javascript errors in doing so.
       my ($r,$text) = @_;
       $r->print(<<"END");
   <script type="text/javascript">
       if (! popwin.closed) {
    $text
       }
   </script>
   END
       $r->rflush();
   }
   
   sub popwin_imgupdate {
       my ($r,$imgnum,$icon) = @_;
       &popwin_js($r,'popwin.document.img'.$imgnum.'.'.
          'src="/adm/lonIcons/'.$icon.'";');
   }    
   
 1;  1;
   
 __END__  __END__
   
   =head1 NAME
   
   Apache::lonsearchcat - mod_perl module for handling a searchable catalog
   
   =head1 SYNOPSIS
   
   Invoked by /etc/httpd/conf/srm.conf:
   
    <Location /adm/searchcat>
    PerlAccessHandler       Apache::lonacc
    SetHandler perl-script
    PerlHandler Apache::lonsearchcat
    ErrorDocument     403 /adm/login
    ErrorDocument  500 /adm/errorhandler
    </Location>
   
   =head1 INTRODUCTION
   
   This module enables searching for a distributed browseable catalog.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 BEGIN SUBROUTINE
   
   This routine is only run once after compilation.
   
   =over 4
   
   =item *
   
   Initializes %hostdomains and hostips hash table (for hosts.tab).
   
   =back
   
   =head1 HANDLER SUBROUTINE
   
   This routine is called by Apache and mod_perl.
   
   =over 4
   
   =item *
   
   configure dynamic components of interface
   
   =item *
   
   determine current user
   
   =item *
   
   see if a search invocation should be done
   
   =item *
   
   else, begin building search interface to output
   
   =item *
   
   compute date selection boxes
   
   =item *
   
   compute customized metadata field
   
   =item *
   
   print screen
   
   =back
   
   =head1 OTHER SUBROUTINES
   
   =over 4
   
   =item *
   
   get_unprocessed_cgi() : reads in critical name/value pairs that may have not
   been processed and passed into %ENV by the web server
   
   =item *
   
   make_persistent() : makes a set of hidden HTML fields to make
   SQL search interface information to be persistent
   
   =back
   
   WEB INTERFACE COMPONENT FUNCTIONS
   
   =over 4
   
   =item *
   
   simpletextfield(name,value) : returns HTML formatted string for simple text
   field
   
   =item *
   
   simplecheckbox(name,value) : returns HTML formatted string for simple
   checkbox
   
   =item *
   
   searchphrasefield(title,name,value) : returns HTML formatted string for
   a search expression phrase field
   
   =item *
   
   dateboxes(name, defaultmonth, defaultday, defaultyear) : returns HTML
   formatted string for a calendar date
   
   =item *
   
   selectbox(title,name,value,%HASH=options) : returns HTML formatted string for
   a selection box field
   
   =back
   
   SEARCH FUNCTIONS
   
   =over 4
   
   =item *
   
   advancedsearch(server reference, environment reference) : perform a complex
   multi-field logical query
   
   =item *
   
   basicsearch(server reference, environment reference) : perform a simple
   single-field logical query
   
   =item *
   
   build_SQL_query(field name, logic) : builds a SQL query string from a
   logical expression with AND/OR keywords
   
   =item *
   
   build_custommetadata_query(field_name, logic_statement) : builds a perl
   regular expression from a logical expression with AND/OR keywords
   
   =item *
   
   recursive_SQL_query_build(field name, reverse notation expression) : 
   builds a SQL query string from a reverse notation expression
   logical expression with AND/OR keywords
   
   =item *
   
   build_date_queries(cmonth1, cday1, cyear1, cmonth2, cday2, cyear2,
   lmonth1, lday1, lyear1, lmonth2, lday2, lyear2) :
   Builds a SQL logic query to check time/date entries.
   
   =back
   
   OUTPUTTING RESULTS FUNCTION
   
   =over 4
   
   =item *
   
   output_results(output mode, server reference, environment reference,
   reply list reference) : outputs results from search
   
   =back
   
   DIFFERENT WAYS TO VIEW METADATA RECORDS
   
   =over 4
   
   =item *
   
   detailed_citation_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
   see metadata viewing notes below 
   
   =item *
   
   summary_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
   see metadata viewing notes below 
   
   =item *
   
   fielded_format_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
   see metadata viewing notes below 
   
   =item *
   
   xml_sgml_view(ORDERED METADATA LIST FOR A RESULT OBJECT INSTANCE) :
   see metadata viewing notes below 
   
   =back
   
     _____________________________________________________________________
    | * Metadata viewing notes                                            |
    | Output is a HTML-ified string.                                      |
    | Input arguments are title, author, subject, url, keywords, version, |
    | notes, short abstract, mime, language, creation date,               |
    | last revision date, owner, copyright, hostname, httphost, and       |
    | extra custom metadata to show.                                      |
     ---------------------------------------------------------------------
   
   TEST CONDITIONAL FUNCTIONS
   
   =over 4
   
   =item *
   
   filled(field) : determines whether a given field has been filled
   
   =back
   
   ERROR FUNCTIONS
   
   =over 4
   
   =item *
   
   output_blank_field_error(server reference) : outputs a message saying that
   more fields need to be filled in
   
   =item *
   
   output_date_error(server reference, error message) : outputs
   an error message specific to bad date format.
   
   =back
   
   =cut
Removed from v.1.58  
changed lines
  Added in v.1.120

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>