loncom/interface/lonsearchcat.pm - diff

Return to lonsearchcat.pm CVS log

Up to [LON-CAPA] / loncom / interface

Diff for /loncom/interface/lonsearchcat.pm between versions 1.7 and 1.128

-version 1.7, 2001/03/12 17:28:32
+version 1.128, 2002/06/24 16:45:22
  Line 1
- # The LearningOnline Network
+ # The LearningOnline Network with CAPA
  # Search Catalog
  #
- # 03/08/2001 Scott Harrison
+ # $Id$
  #
+ # Copyright Michigan State University Board of Trustees
+ #
+ # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+ #
+ # LON-CAPA is free software; you can redistribute it and/or modify
+ # it under the terms of the GNU General Public License as published by
+ # the Free Software Foundation; either version 2 of the License, or
+ # (at your option) any later version.
+ #
+ # LON-CAPA is distributed in the hope that it will be useful,
+ # but WITHOUT ANY WARRANTY; without even the implied warranty of
+ # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ # GNU General Public License for more details.
+ #
+ # You should have received a copy of the GNU General Public License
+ # along with LON-CAPA; if not, write to the Free Software
+ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ #
+ # /home/httpd/html/adm/gpl.txt
+ #
+ # http://www.lon-capa.org/
+ #
+ # 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
+ #
+ ###############################################################################
+ ###############################################################################
+ =pod
+ =head1 NAME
+ lonsearchcat
+ =head1 SYNOPSIS
+ Search interface to LON-CAPAs digital library
+ =head1 DESCRIPTION
+ 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.
+ lonsearchcat presents the user with an interface to search the LON-CAPA
+ digital library.  lonsearchcat also initiates the execution of a search
+ by sending the search parameters to LON-CAPA servers.  The progress of
+ search (on a server basis) is displayed to the user in a seperate window.
+ =head1 Internals
+ =over 4
+ =cut
+ ###############################################################################
+ ###############################################################################
+ ###############################################################################
+ ##                                                                           ##
+ ## 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;
+ # ------------------------------------------------- modules used by this module
  use strict;
  use Apache::Constants qw(:common);
  use Apache::lonnet();
  use Apache::File();
  use CGI qw(:standard);
+ use Text::Query;
+ use GDBM_File;
+ use Apache::loncommon();
+ # ---------------------------------------- variables used throughout the module
+ ######################################################################
+ ######################################################################
+ =pod
+ =item Global variables
+ =over 4
- my %language;
+ =item $closebutton
- my $scrout;
- my %metadatafields;
- my %cprtag;
- my %mimetag;
+ 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
+ ######################################################################
+ ######################################################################
+ # -- 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 {
      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->send_http_header;
      return OK if $r->header_only;
-     %metadatafields=();
+     my $domain  = $r->dir_config('lonDefDomain');
+     $diropendb= "/home/httpd/perl/tmp/".&Apache::lonnet::escape($domain).
- # ------------------------------------------------ First, check out environment
+             "\_".&Apache::lonnet::escape($ENV{'user.name'})."_searchcat.db";
-     $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'};
+     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+              ['catalogmode','launch','acts','mode','form','element',
-     %language=();
+               'reqinterface']);
-     $language{'any'}='Any language';
+     ##
-     {
+     ## Clear out old values from database
- 	my $fh=Apache::File->new($r->dir_config('lonTabDir').'/language.tab');
+     ##
- 	map {
+     if ($ENV{'form.launch'} eq '1') {
- 	    $_=~/(\w+)\s+([\w\s\-]+)/;
+ 	if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
- 	    $language{$1}=$2;
+ 	    &start_fresh_session();
- 	} <$fh>;
+ 	    untie %hash;
-     }
+ 	} else {
+ 	    $r->print('<html><head></head><body>Unable to tie hash to db '.
-     %cprtag=();
+ 		      'file</body></html>');
-     $cprtag{'any'}='Any copyright/distribution';
+ 	    return OK;
-     {
+ 	}
- 	my $fh=Apache::File->new($r->dir_config('lonIncludes').'/copyright.tab');
- 	map {
- 	    $_=~/(\w+)\s+([\w\s\-]+)/;
- 	    $cprtag{$1}=$2;
- 	} <$fh>;
-     }
-     %mimetag=();
-     $mimetag{'any'}='Any type';
-     {
- 	my $fh=Apache::File->new($r->dir_config('lonTabDir').'/filetypes.tab');
- 	map {
- 	    $_=~/(\w+)\s+(\w+)\s+([\w\s\-]+)/;
- 	    $mimetag{$1}=".$1 $3";
- 	} <$fh>;
      }
+     ##
+     ## Produce some output, so people know it is working
+     ##
+     $r->print("\n");
+     $r->rflush;
+     ##
+     ## Configure dynamic components of interface
+     ##
+     my $hidden;       # Holds 'hidden' html forms
+     if ($ENV{'form.catalogmode'} eq 'interactive') {
+ 	$hidden="<input type='hidden' name='catalogmode' value='interactive'>".
+ 	    "\n";
+         $closebutton="<input type='button' name='close' value='CLOSE' ".
+ 	    "onClick='self.close()'>"."\n";
+     } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
+ 	$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
+     ##
+     ##  What are we doing?
+     ##
      if ($ENV{'form.basicsubmit'} eq 'SEARCH') {
- 	return &basicsearch($r,$ENV{'form.basicexp'});
+         # Perform basic search and give results
+ 	return &basicsearch($r,\%ENV,$hidden);
+     } elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') {
+         # Perform advanced search and give results
+ 	return &advancedsearch($r,\%ENV,$hidden);
+     } elsif ($ENV{'form.reqinterface'} eq 'advanced') {
+         # Output the advanced interface
+         $r->print(&advanced_search_form($closebutton,$hidden));
+         return OK;
+     } else {
+         # Output normal search interface
+         $r->print(&basic_search_form($closebutton,$hidden));
      }
+     return OK;
+ }
-     $scrout="";
+ ######################################################################
-     $scrout.=&searchphrasefield('Limit by title','title',
+ ######################################################################
- 			'');
-     $scrout.=&searchphrasefield('Limit by author','author',
+ =pod
- 			'');
-     $scrout.=&searchphrasefield('Limit by subject','subject',
+ =item &basic_search_form()
- 			'');
-     $scrout.=&searchphrasefield('Limit by notes','notes',
+ Returns a scalar which holds html for the basic search form.
- 			'');
-     $scrout.=&searchphrasefield('Limit by abstract','abstract',
+ =cut
- 			'');
-     $scrout.=&selectbox('Limit by MIME type','mime',
+ ######################################################################
- 			'notxxx',%mimetag);
+ ######################################################################
-     $scrout.=&selectbox('Limit by language','language',
+ sub basic_search_form{
- 			'any',%language);
+     my ($closebutton,$hidden) = @_;
+     my $scrout=<<"ENDDOCUMENT";
-     $scrout.=<<CREATIONDATEEND;
+ <html>
+ <head>
+ <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>
+ <body bgcolor="#FFFFFF">
+ <img align='right' src='/adm/lonIcons/lonlogos.gif' />
+ <h1>Search Catalog</h1>
+ <form method="post" action="/adm/searchcat">
+ $hidden
+ <h3>Basic Search</h3>
  <p>
- <font color="#800000" face="helvetica"><b>LIMIT BY CREATION DATE RANGE:</b>
+ Enter terms or phrases separated by AND, OR, or NOT then press SEARCH below.
- </font>
- <br>
- between:<select name="creationdatemonthstart">
- <option value="01"> </option>
- <option value="01">January</option>
- <option value="02">February</option>
- <option value="03">March</option>
- <option value="04">April</option>
- <option value="05">May</option>
- <option value="06">June</option>
- <option value="07">July</option>
- <option value="08">August</option>
- <option value="09">September</option>
- <option value="10">October</option>
- <option value="11">November</option>
- <option value="12">December</option>
- </select>
- <select name="creationdatedaystart">
- <option value="1"> </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>
- <select name="creationdateyearstart">
- <option value=1976> </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>
- and:<select name="creationdatemonthend">
- <option value="12"> </option>
- <option value="01">January</option>
- <option value="02">February</option>
- <option value="03">March</option>
- <option value="04">April</option>
- <option value="05">May</option>
- <option value="06">June</option>
- <option value="07">July</option>
- <option value="08">August</option>
- <option value="09">September</option>
- <option value="10">October</option>
- <option value="11">November</option>
- <option value="12">December</option>
- </select>
- <select name="creationdatedayend">
- <option value=28> </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>
- <select name="creationdateyearend">
- <option value=2051> </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>
  </p>
- CREATIONDATEEND
-     $scrout.=<<LASTREVISIONDATEEND;
  <p>
- <font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:
+ <table>
- </b></font>
+ <tr><td>
- <br>between:<select name="lastrevisiondatemonthstart">
+ ENDDOCUMENT
- <option value="00"> </option>
+     $scrout.='&nbsp;'.&simpletextfield('basicexp',$ENV{'form.basicexp'},40).
- <option value="01">January</option>
+         '&nbsp;';
- <option value="02">February</option>
+ #    $scrout.=&simplecheckbox('allversions',$ENV{'form.allversions'});
- <option value="03">March</option>
+ #    $scrout.='<font color="#800000">Search historic archives</font>';
- <option value="04">April</option>
+     $scrout.=<<ENDDOCUMENT;
- <option value="05">May</option>
+ </td><td><a href="/adm/searchcat?reqinterface=advanced">Advanced Search</a></td></tr></table>
- <option value="06">June</option>
+ </p>
- <option value="07">July</option>
+ <p>
- <option value="08">August</option>
+ &nbsp;<input type="submit" name="basicsubmit" value='SEARCH' />&nbsp;
- <option value="09">September</option>
+ $closebutton
- <option value="10">October</option>
+ <!-- basic view selection -->
- <option value="11">November</option>
+ <select name='basicviewselect'>
- <option value="12">December</option>
+ <option value='Detailed Citation View' selected="true">
- </select>
+ Detailed Citation View</option>
- <select name="lastrevisiondatedaystart">
+ <option value='Summary View'>Summary View</option>
- <option value=1> </option>
+ <option value='Fielded Format'>Fielded Format</option>
- <option value=1>1</option>
+ <option value='XML/SGML'>XML/SGML</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>
- <select name="lastrevisiondateyearstart">
- <option value=1976> </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>
- and:<select name="lastrevisiondatemonthend">
- <option value="12"> </option>
- <option value="01">January</option>
- <option value="02">February</option>
- <option value="03">March</option>
- <option value="04">April</option>
- <option value="05">May</option>
- <option value="06">June</option>
- <option value="07">July</option>
- <option value="08">August</option>
- <option value="09">September</option>
- <option value="10">October</option>
- <option value="11">November</option>
- <option value="12">December</option>
- </select>
- <select name="lastrevisiondatedayend">
- <option value=28> </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>
- <select name="lastrevisiondateyearend">
- <option value=2051> </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 of basic view selection -->
+ <input type="button" value="HELP" onClick="openhelp()" />
  </p>
- LASTREVISIONDATEEND
+ </form>
+ </body>
+ </html>
+ ENDDOCUMENT
+     return $scrout;
+ }
+ ######################################################################
+ ######################################################################
-     $scrout.=&searchphrasefield('Limit by publisher/owner','owner',
+ =pod
- 			$metadatafields{'owner'});
-     $scrout.=&selectbox('Limit by copyright/distribution','copyright',
+ =item &advanced_search_form()
- 			'any',%cprtag);
+ Returns a scalar which holds html for the advanced search form.
+ =cut
+ ######################################################################
+ ######################################################################
- # ---------------------------------------------------------------- Print screen
+ sub advanced_search_form{
-     $r->print(<<ENDDOCUMENT);
+     my ($closebutton,$hidden) = @_;
+     my $scrout=<<"ENDHEADER";
  <html>
  <head>
  <title>The LearningOnline Network with CAPA</title>
- <script>
+ <script type="text/javascript">
-     function select_data() {
+     function openhelp(val) {
- 	changeTitle();
+ 	openhelpwin=open('/adm/help/searchcat.html','helpscreen',
- 	changeURL();
+ 	     'scrollbars=1,width=600,height=300');
-     }
+ 	openhelpwin.focus();
-     function changeTitle() {
- 	if (opener.inf.document.forms.resinfo.elements.t) {
- 	    opener.inf.document.forms.resinfo.elements.t.value="ABC";
- 	}
-     }
-     function changeURL() {
- 	if (opener.inf.document.forms.resinfo.elements.u) {
- 	    opener.inf.document.forms.resinfo.elements.u.value="DEF";
- 	}
      }
  </script>
  </head>
  <body bgcolor="#FFFFFF">
- <img align=right src=/adm/lonIcons/lonlogos.gif>
+ <img align='right' src='/adm/lonIcons/lonlogos.gif' />
  <h1>Search Catalog</h1>
  <form method="post" action="/adm/searchcat">
- <hr>
+ $hidden
- <h3>Basic Search</h3>
+ <hr />
+ <h3>Advanced Search</h3>
+ ENDHEADER
+     $scrout.=&searchphrasefield('Limit by title','title',
+ 			$ENV{'form.title'});
+     $scrout.=&searchphrasefield('Limit by author','author',
+ 			$ENV{'form.author'});
+     $scrout.=&searchphrasefield('Limit by subject','subject',
+ 			$ENV{'form.subject'});
+     $scrout.=&searchphrasefield('Limit by keywords','keywords',
+ 			$ENV{'form.keywords'});
+     $scrout.=&searchphrasefield('Limit by URL','url',
+ 			$ENV{'form.url'});
+ #    $scrout.=&searchphrasefield('Limit by version','version',
+ #			$ENV{'form.version'});
+     $scrout.=&searchphrasefield('Limit by notes','notes',
+ 			$ENV{'form.notes'});
+     $scrout.=&searchphrasefield('Limit by abstract','abstract',
+ 			$ENV{'form.abstract'});
+     $ENV{'form.mime'}='any' unless length($ENV{'form.mime'});
+     $scrout.=&selectbox('Limit by MIME type','mime',
+ 			$ENV{'form.mime'},
+ 			'any','Any type',
+ 			\&{Apache::loncommon::filedescriptionex},
+ 			(&Apache::loncommon::fileextensions));
+     $ENV{'form.language'}='any' unless length($ENV{'form.language'});
+     $scrout.=&selectbox('Limit by language','language',
+ 			$ENV{'form.language'},'any','Any Language',
+ 			\&{Apache::loncommon::languagedescription},
+ 			(&Apache::loncommon::languageids),
+ 			);
+ # ------------------------------------------------ Compute date selection boxes
+     $scrout.=<<CREATIONDATESTART;
  <p>
- <INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
+ <font color="#800000" face="helvetica"><b>LIMIT BY CREATION DATE RANGE:</b>
- onClick="javascript:select_data()">
+ </font>
- </p>
+ <br />
+ between:
+ CREATIONDATESTART
+     $scrout.=&dateboxes('creationdatestart',1,1,1976,
+ 			$ENV{'form.creationdatestart_month'},
+ 			$ENV{'form.creationdatestart_day'},
+ 			$ENV{'form.creationdatestart_year'},
+ 			);
+     $scrout.="and:\n";
+     $scrout.=&dateboxes('creationdateend',12,31,2051,
+ 			$ENV{'form.creationdateend_month'},
+ 			$ENV{'form.creationdateend_day'},
+ 			$ENV{'form.creationdateend_year'},
+ 			);
+     $scrout.="</p>";
+     $scrout.=<<LASTREVISIONDATESTART;
  <p>
- Enter terms or phrases separated by search operators
+ <font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:
- such as AND or OR then press SEARCH below.  Terms should be specific
+ </b></font>
- to the title, author, subject, notes, or abstract information associated
+ <br />between:
- with a resource.
+ LASTREVISIONDATESTART
- <br>
+     $scrout.=&dateboxes('lastrevisiondatestart',1,1,1976,
- <input type="text" name="basicexp">
+ 			$ENV{'form.lastrevisiondatestart_month'},
- <input type="checkbox" name="titleonly">
+ 			$ENV{'form.lastrevisiondatestart_day'},
- <font color="#800000">Title only</font>
+ 			$ENV{'form.lastrevisiondatestart_year'},
- <br>
+ 			);
- <input type="submit" name="basicsubmit" value="SEARCH">
+     $scrout.=<<LASTREVISIONDATEEND;
- </p>
+ and:
- <hr>
+ LASTREVISIONDATEEND
- <h3>Advanced Search</h3>
+     $scrout.=&dateboxes('lastrevisiondateend',12,31,2051,
- $scrout
+ 			$ENV{'form.lastrevisiondateend_month'},
+ 			$ENV{'form.lastrevisiondateend_day'},
+ 			$ENV{'form.lastrevisiondateend_year'},
+ 			);
+     $scrout.='</p>';
+     $scrout.=&searchphrasefield('Limit by publisher/owner','owner',
+ 				$ENV{'form.owner'});
+     $ENV{'form.copyright'}='any' unless length($ENV{'form.copyright'});
+     $scrout.=&selectbox('Limit by copyright/distribution','copyright',
+ 			 $ENV{'form.copyright'},
+ 			 'any','Any copyright/distribution',
+ 			 \&{Apache::loncommon::copyrightdescription},
+ 			 (&Apache::loncommon::copyrightids),
+ 			 );
+ # ------------------------------------------- Compute customized metadata field
+     $scrout.=<<CUSTOMMETADATA;
  <p>
- <input type="submit" name="advancedsubmit" value="SEARCH">
+ <font color="#800000" face="helvetica"><b>LIMIT BY SPECIAL METADATA FIELDS:</b>
+ </font>
+ 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 />
+ <b>Example:</b> grandmother=75 OR grandfather=85
+ <br />
+ CUSTOMMETADATA
+     $scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});
+     $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.=<<ENDDOCUMENT;
+ <p>
+ <input type="submit" name="advancedsubmit" value='SEARCH' />
+ <input type="reset" name="reset" value='RESET' />
+ $closebutton
+ <!-- advance view select -->
+ <select name='advancedviewselect'>
+ <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 advanced view select -->
+ <input type="button" value="HELP" onClick="openhelp()" />
  </p>
  </form>
  </body>
  </html>
  ENDDOCUMENT
-     return OK;
+     return $scrout;
  }
- # --------------------------------------------------------- Various form fields
+ ######################################################################
+ ######################################################################
- sub textfield {
+ =pod
-     my ($title,$name,$value)=@_;
-     return "\n<p><b>$title:</b><br>".
+ =item &make_persistent()
-            '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
+ Returns a scalar which holds the current ENV{'form.*'} values in
+ a 'hidden' html input tag.  This allows search interface information
+ to be somewhat persistent.
+ =cut
+ ######################################################################
+ ######################################################################
+ 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;
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item HTML form building functions
+ =over 4
+ =item &simpletextfield()
+ Inputs: $name,$value,$size
+ Returns a text input field with the given name, value, and size.
+ If size is not specified, a value of 20 is used.
+ =item &simplecheckbox()
+ Inputs: $name,$value
+ Returns a simple check box with the given $name.
+ If $value eq 'on' the box is checked.
+ =item &searchphrasefield()
+ Inputs: $title,$name,$value
+ Returns html for a title line and an input field for entering search terms.
+ the instructions "Enter terms or phrases separated by search operators such
+ as AND, OR, or NOT." are given following the title.  The entry field (which
+ is where the $name and $value are used) is an 80 column simpletextfield.
+ =item &dateboxes()
+ Returns html selection form elements for the specification of
+ the day, month, and year.
+ =item &selectbox()
+ Returns html selection form.
+ =back
+ =cut
+ ######################################################################
+ ######################################################################
+ sub simpletextfield {
+     my ($name,$value,$size)=@_;
+     $size = 20 if (! defined($size));
+     return '<input type="text" name="'.$name.
+         '" size="'.$size.'" value="'.$value.'" />';
+ }
+ sub simplecheckbox {
+     my ($name,$value)=@_;
+     my $checked='';
+     $checked="CHECKED" if $value eq 'on';
+     return '<input type="checkbox" name="'.$name.'" '. $checked . ' />';
  }
  sub searchphrasefield {
      my ($title,$name,$value)=@_;
      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 NOT.
- as AND or OR.
  END
      my $uctitle=uc($title);
-     return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:</b>".
+     return "\n".
- 	   ":</FONT> $instruction<br>".
+         '<p><font color="#800000" face="helvetica"><b>'.$uctitle.':</b>'.
-            '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
+         "</FONT> $instruction<br />".&simpletextfield($name,$value,80);
+ }
+ sub dateboxes {
+     my ($name,$defaultmonth,$defaultday,$defaultyear,
+ 	$currentmonth,$currentday,$currentyear)=@_;
+     ($defaultmonth,$defaultday,$defaultyear)=('','','');
+     #
+     # Day
+     my $day=<<END;
+ <select name="${name}_day">
+ <option value='$defaultday'> </option>
+ 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);
+     #
+     # 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 $year=<<END;
+ <select name="${name}_year">
+ <option value='$defaultyear'> </option>
+ 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);
+     return "$month$day$year";
  }
  sub selectbox {
-     my ($title,$name,$value,%options)=@_;
+     my ($title,$name,$value,$anyvalue,$anytag,$functionref,@idlist)=@_;
      my $uctitle=uc($title);
-     my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".
+     my $selout="\n".'<p><font color="#800000" face="helvetica">'.
- 	"</b></font><br>".'<select name="'.$name.'">';
+         '<b>'.$uctitle.':</b></font><br /><select name="'.$name.'">';
-     map {
+     foreach ($anyvalue,@idlist) {
          $selout.='<option value="'.$_.'"';
-         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 $selout.'</select>';
  }
- # --------------------------------------------------- Performing a basic search
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &advancedsearch()
+ Parse advanced search results.
+ =cut
+ ######################################################################
+ ######################################################################
+ sub advancedsearch {
+     my ($r,$envhash,$hidden)=@_;
+     my %ENV=%{$envhash};
+     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 $field ('title','author','subject','keywords','url','version',
+ 		   'notes','abstract','mime','language','owner',
+ 		   'custommetadata') {
+ 	if (&filled($ENV{"form.$field"})) {
+ 	    $fillflag++;
+ 	}
+     }
+     unless ($fillflag) {
+ 	&output_blank_field_error($r);
+ 	return OK;
+     }
+     # Turn the form input into a SQL-based query
+     my $query='';
+     my @queries;
+     # Evaluate logical expression AND/OR/NOT phrase fields.
+     foreach my $field ('title','author','subject','notes','abstract','url',
+ 		       'keywords','version','owner') {
+ 	if ($ENV{'form.'.$field}) {
+ 	    push @queries,&build_SQL_query($field,$ENV{'form.'.$field});
+ 	}
+     }
+     # Evaluate option lists
+     if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') {
+ 	push @queries,"(language like \"$ENV{'form.language'}\")";
+     }
+     if ($ENV{'form.mime'} and $ENV{'form.mime'} ne 'any') {
+ 	push @queries,"(mime like \"$ENV{'form.mime'}\")";
+     }
+     if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {
+ 	push @queries,"(copyright like \"$ENV{'form.copyright'}\")";
+     }
+     # Evaluate date windows
+     my $datequery=&build_date_queries(
+ 			$ENV{'form.creationdatestart_month'},
+ 			$ENV{'form.creationdatestart_day'},
+ 			$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;
+     }
+     elsif ($datequery) {
+ 	push @queries,$datequery;
+     }
+     # Process form information for custom metadata querying
+     my $customquery='';
+     if ($ENV{'form.custommetadata'}) {
+ 	$customquery=&build_custommetadata_query('custommetadata',
+ 				      $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,$hidden);
+         return OK;
+     } elsif ($customquery) {
+ 	my $reply; # reply hash reference
+ 	$reply=&Apache::lonnet::metadata_query('',
+ 					       $customquery,$customshow);
+ 	&output_results('Advanced',$r,$envhash,$customquery,$reply,$hidden);
+         return OK;
+     }
+     # should not get to this point
+     return 'Error.  Should not have gone to this point.';
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &basicsearch()
+ Parse basic search form.
+ =cut
+ ######################################################################
+ ######################################################################
  sub basicsearch {
-     my ($r,$expression)=@_;
+     my ($r,$envhash,$hidden)=@_;
+     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;
+     }
-     my $query=$expression;
+     # Check to see if enough is filled in
- #    $query="select * from metadata where concat(title,':\@:',author) like '\%Sci\%'";
+     unless (&filled($ENV{'form.basicexp'})) {
-     $query="select * from metadata where concat(title,\"    \",author) like '\%$expression\%'";
+ 	&output_blank_field_error($r);
- #    my $reply=&Apache::lonnet::reply("querysend:DESCRIBE metadata","msul3");
+ 	return OK;
-     my $reply=&Apache::lonnet::reply("querysend:$query",'msul3');
- #    my $reply=&Apache::lonnet::reply('querysend:select * from metadata','msul3');
-     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;
-     {
- 	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>;
      }
+     # Build SQL query string based on form page
+     my $query='';
+     my $concatarg=join(',"    ",',
+ 		       ('title', 'author', 'subject', 'notes', 'abstract',
+                         'keywords'));
+     $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)
+ #    &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',$r,$envhash,$query,$reply,$hidden);
+     return OK;
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &build_SQL_query()
+ Builds a SQL query string from a logical expression with AND/OR keywords
+ using Text::Query and &recursive_SQL_query_builder()
+ =cut
+ ######################################################################
+ ######################################################################
+ sub build_SQL_query {
+     my ($field_name,$logic_statement)=@_;
+     my $q=new Text::Query('abc',
+ 			  -parse => 'Text::Query::ParseAdvanced',
+ 			  -build => 'Text::Query::Build');
+     $q->prepare($logic_statement);
+     my $matchexp=${$q}{'matchexp'}; chomp $matchexp;
+     my $sql_query=&recursive_SQL_query_build($field_name,$matchexp);
+     return $sql_query;
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &build_custommetadata_query()
+ Constructs a custom metadata query using a rather heinous regular
+ expression.
+ =cut
+ ######################################################################
+ ######################################################################
+ sub build_custommetadata_query {
+     my ($field_name,$logic_statement)=@_;
+     my $q=new Text::Query('abc',
+ 			  -parse => 'Text::Query::ParseAdvanced',
+ 			  -build => 'Text::Query::BuildAdvancedString');
+     $q->prepare($logic_statement);
+     my $matchexp=${$q}{'-parse'}{'-build'}{'matchstring'};
+     # quick fix to change literal into xml tag-matching
+     # will eventually have to write a separate builder module
+     # wordone=wordtwo becomes\<wordone\>[^\<] *wordtwo[^\<]*\<\/wordone\>
+     $matchexp =~ s/(\w+)\\=([\w\\\+]+)?# wordone=wordtwo is changed to
+                  /\\<$1\\>?#           \<wordone\>
+                    \[\^\\<\]?#        [^\<]
+                    \*$2\[\^\\<\]?#           *wordtwo[^\<]
+                    \*\\<\\\/$1\\>?#                        *\<\/wordone\>
+                    /g;
+     return $matchexp;
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &recursive_SQL_query_build()
+ Recursively constructs an SQL query.  Takes as input $dkey and $pattern.
+ =cut
+ ######################################################################
+ ######################################################################
+ sub recursive_SQL_query_build {
+     my ($dkey,$pattern)=@_;
+     my @matches=($pattern=~/(\[[^\]|\[]*\])/g);
+     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 '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,$pattern);
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &build_date_queries()
+ Builds a SQL logic query to check time/date entries.
+ Also reports errors (check for /^Incorrect/).
+ =cut
+ ######################################################################
+ ######################################################################
+ sub build_date_queries {
+     my ($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 '';
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &output_results()
+ 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.)
+ =cut
+ ######################################################################
+ ######################################################################
+ sub output_results {
+ #    &Apache::lonnet::logthis("output_results:".time);
+     my $fnum; # search result counter
+     my ($mode,$r,$envhash,$query,$replyref,$hidden)=@_;
+     my %ENV=%{$envhash};
+     my %rhash=%{$replyref};
      my $compiledresult='';
+     my $timeremain=300; # (seconds)
+     my $elapsetime=0;
+     my $resultflag=0;
+     my $tflag=1;
+     #
+     # make query information persistent to allow for subsequent revision
+     my $persistent=&make_persistent();
+     # spit out the generic header
+     $r->print(&search_results_header());
+     $r->rflush();
+     # begin showing the cataloged results
+     $r->print(<<CATALOGBEGIN);
+ </head>
+ <body bgcolor="#ffffff">
+ <img align=right src=/adm/lonIcons/lonlogos.gif>
+ <h1>Search Catalog</h1>
+ 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'
+ onClick='this.form.submit();' />
+ $importbutton
+ $closebutton
+ $persistent
+ <hr />
+ <h3>Search Query</h3>
+ CATALOGCONTROLS
+     #
+     # Remind them what they searched for
+     #
+     if ($mode eq 'Basic') {
+ 	$r->print('<p><b>Basic search:</b> '.$ENV{'form.basicexp'}.'</p>');
+     } elsif ($mode eq 'Advanced') {
+ 	$r->print('<p><b>Advanced search</b> '.$query.'</p>');
+     }
+     $r->print('<h3>Search Results</h3>');
+     $r->rflush();
+     #
+     # make the pop-up window for status
+     #
+     $r->print(&make_popwin(%rhash));
+     $r->rflush();
+     ##
+     ## Prepare for the main loop below
+     ##
+     my $servercount=0;
+     my $hitcountsum=0;
+     my $servernum=(keys %rhash);
+     my $serversleft=$servernum;
+     ##
+     ## Run until we run out of time or we run out of servers
+     ##
+     while($serversleft && $timeremain) {
+       ##
+       ## %rhash has servers deleted from it as results come in
+       ## (within the foreach loop below).
+       ##
+       foreach my $rkey (sort keys %rhash) {
+ #        &Apache::lonnet::logthis("Server $rkey:".time);
+ 	$servercount++;
+ 	$compiledresult='';
+ 	my $reply=$rhash{$rkey};
+ 	my @results;
+ 	if ($reply eq 'con_lost') {
+ 	    &popwin_imgupdate($r,$rkey,"srvbad.gif");
+ 	    $serversleft--;
+             delete $rhash{$rkey};
+ 	} else {
+             # must do since 'use strict' checks for tainting
+ 	    $reply=~/^([\.\w]+)$/;
+ 	    my $replyfile=$r->dir_config('lonDaemons').'/tmp/'.$1;
+ 	    $reply=~/(.*?)\_/;
+             for (my $counter=0;$counter<2;$counter++) {
+                 if (-e $replyfile && ! -e "$replyfile.end") {
+                     &popwin_imgupdate($r,$rkey,"srvhalf.gif");
+                     &popwin_js($r,'popwin.hc["'.$rkey.'"]='.
+                                '"still transferring..."'.';');
+                 }
+                 # Are we finished transferring data?
+                 if (-e "$replyfile.end") {
+                     $serversleft--;
+                     delete $rhash{$rkey};
+                     if (-s $replyfile) {
+                         &popwin_imgupdate($r,$rkey,"srvgood.gif");
+                         my $fh;
+                         unless ($fh=Apache::File->new($replyfile)){
+                             # Is it really appropriate to die on this error?
+                             $r->print('ERROR: file '.
+                                       $replyfile.' cannot be opened');
+                             return OK;
+                         }
+                         @results=<$fh> if $fh;
+                         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;
+                 } # end of if ( -e "$replyfile.end")
+                 last unless $timeremain;
+                 sleep 1;    # wait for daemons to write files?
+                 $timeremain--;
+                 $elapsetime++;
+                 &popwin_js($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 \-\-\>/ $value/g;
+                     }
+                 }
+                 if ($compiledresult or $servercount!=$servernum) {
+                     $compiledresult.="<hr align='left' width='200' noshade />";
+                 }
+                 $compiledresult.="\n<p>\n";
+                 if ($ENV{'form.catalogmode'} eq 'interactive') {
+                     my $titleesc=$Fields{'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('$titleesc','$Fields{'url'}')">
+ </font>
+ <br />
+ END
+                 }
+                 if ($ENV{'form.catalogmode'} eq 'groupsearch') {
+ 		    $fnum+=0;
+ 		    $hash{"pre_${fnum}_link"}=$Fields{'url'};
+ 		    $hash{"pre_${fnum}_title"}=$Fields{'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 $viewselect;
+ 	        if ($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 => $rkey );
+ 		}
+                 elsif ($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 => $rkey );
+ 		}
+             }
+             untie %hash;
+         }
+ 	if ($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();
+     $r->print("</body>\n</html>\n");
+     return;
+ }
+ ###########################################################
+ ###########################################################
+ =pod
+ =item &parse_raw_result()
+ Takes a line from the file of results and parse it.  Returns a hash
+ with keys for the following fields:
+ 'title', 'author', 'subject', 'url', 'keywords', 'version', 'notes',
+ 'abstract', 'mime', 'lang', 'owner', 'copyright', 'creationdate',
+ 'lastrevisiondate'.
+ In addition, the following tags are set by calling the appropriate
+ lonnet function: 'language', 'cprtag', 'mimetag'.
+ The 'title' field is set to "Untitled" if the title field is blank.
+ 'abstract' and 'keywords' are truncated to 200 characters.
+ =cut
+ ###########################################################
+ ###########################################################
+ sub parse_raw_result {
+     my ($result,$hostname) = @_;
+     # Check for a comma - if it is there then we do not need to unescape the
+     # string.  There seems to be some kind of problem with some items in
+     # the database - the entire string gets sent out unescaped...?
+     unless ($result =~ /,/) {
+         $result = &Apache::lonnet::unescape($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;
+     my %Fields =
+         ( 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)
+         );
+     $Fields{'language'} =
+         &Apache::loncommon::languagedescription($Fields{'lang'});
+     $Fields{'copyrighttag'} =
+         &Apache::loncommon::copyrightdescription($Fields{'copyright'});
+     $Fields{'mimetag'} =
+         &Apache::loncommon::filedescription($Fields{'mime'});
+     # Put spaces in the keyword list, if needed.
+     $Fields{'keywords'}=~ s/,([A-z])/, $1/g;
+     if ($Fields{'title'}=~ /^\s*$/ ) {
+         $Fields{'title'}='Untitled';
+     }
+     unless ($ENV{'user.adv'}) {
+         $Fields{'keywords'} = '- not displayed -';
+         $Fields{'notes'}    = '- not displayed -';
+         $Fields{'abstract'} = '- not displayed -';
+         $Fields{'subject'}  = '- not displayed -';
+     }
+     if (length($Fields{'abstract'})>200) {
+         $Fields{'abstract'} =
+             substr($Fields{'abstract'},0,200).'...';
+     }
+     if (length($Fields{'keywords'})>200) {
+         $Fields{'keywords'} =
+             substr($Fields{'keywords'},0,200).'...';
+     }
+     return %Fields;
+ }
+ ###########################################################
+ ###########################################################
+ =pod
+ =item &handle_custom_fields()
+ =cut
+ ###########################################################
+ ###########################################################
+ sub handle_custom_fields {
+     my @results = @{shift()};
+     my $customshow='';
+     my $extrashow='';
+     my @customfields;
+     if ($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";
+         }
+     }
+     my $customdata='';
+     my %customhash;
      foreach my $result (@results) {
- 	my ($title,$author,$subject,$notes,$abstract,$mime,$lang,
+         if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
- 	    $creationdate,$lastrevisiondate,$owner,$copyright
+             my $tmp=$result;
- 	    )=map {&Apache::lonnet::unescape($_)} (split(/\,/,$result));
+             $tmp=~s/^custom\=//;
- 	my $shortabstract=$abstract;
+             my ($k,$v)=map {&Apache::lonnet::unescape($_);
- 	$shortabstract=substr($abstract,0,200) if length($abstract)>200;
+                         } split(/\,/,$tmp);
- 	$compiledresult=<<END;
+             $customhash{$k}=$v;
- <p>
+         }
- <b>Title:</b> $title<br>
+     }
- <b>Author(s):</b> $author<br>
+     return ($extrashow,\@customfields,\%customhash);
- <b>Subject:</b> $subject<br>
+ }
- <b>Keyword(s):</b> <i>not available yet</i><br>
- <b>Notes:</b> $notes<br>
+ ######################################################################
- <b>Abstract:</b> $shortabstract<br>
+ ######################################################################
- <b>MIME Type:</b> $mimetag{$mime}<br>
- <b>Language:</b> $language{$lang}<br>
+ =pod
- <b>Creation Date:</b> $creationdate<br>
- <b>Last Revision Date:</b> $lastrevisiondate<br>
+ =item &search_results_header
- <b>Publisher/Owner:</b> $owner<br>
- <b>Copyright/Distribution:</b> $copyright<br>
+ Output the proper javascript code to deal with different calling modes.
- <b>Repository Location:</b> $hostname
+ Takes inputs directly from from %ENV.  The following environment variables
+ are checked:
+ =over 4
+ =item 'form.catalogmode'
+ Checked for 'interactive' and 'groupsearch'.
+ =item 'form.mode'
+ Checked for existance & 'edit' mode.
+ =item 'form.form'
+ =item 'form.element'
+ =back
+ =cut
+ ######################################################################
+ ######################################################################
+ sub search_results_header {
+     my $result = '';
+     # output beginning of search page
+     $result.=<<BEGINNING;
+ <html>
+ <head>
+ <title>The LearningOnline Network with CAPA</title>
+ BEGINNING
+     # conditional output of script functions dependent on the mode in
+     # which the search was invoked
+     if ($ENV{'form.catalogmode'} eq 'interactive'){
+ 	if (! exists($ENV{'form.mode'}) || $ENV{'form.mode'} ne 'edit') {
+             $result.=<<SCRIPT;
+ <script type="text/javascript">
+     function select_data(title,url) {
+ 	changeTitle(title);
+ 	changeURL(url);
+ 	self.close();
+     }
+     function changeTitle(val) {
+ 	if (opener.inf.document.forms.resinfo.elements.t) {
+ 	    opener.inf.document.forms.resinfo.elements.t.value=val;
+ 	}
+     }
+     function changeURL(val) {
+ 	if (opener.inf.document.forms.resinfo.elements.u) {
+ 	    opener.inf.document.forms.resinfo.elements.u.value=val;
+ 	}
+     }
+ </script>
+ SCRIPT
+         } elsif ($ENV{'form.mode'} eq 'edit') {
+             my $form = $ENV{'form.form'};
+             my $element = $ENV{'form.element'};
+             $result.=<<SCRIPT;
+ <script type="text/javascript">
+ function select_data(title,url) {
+     changeURL(url);
+     self.close();
+ }
+ function changeTitle(val) {
+ }
+ function changeURL(val) {
+     if (window.opener.document) {
+         window.opener.document.forms["$form"].elements["$element"].value=val;
+     } else {
+ 	var url = 'forms[\"$form\"].elements[\"$element\"].value';
+         alert("Unable to transfer data to "+url);
+     }
+ }
+ </script>
+ SCRIPT
+         }
+     }
+     $result.=<<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
+     $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
+     return $result;
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &make_popwin()
+ Returns html with javascript in it to open up the status window.
+ =cut
+ ######################################################################
+ ######################################################################
+ sub make_popwin {
+     my %rhash = @_;
+     my $servernum=(keys %rhash);
+     my $hcinit;
+     my $grid="'<br />'+\n";
+     # $sn is the server number, used ONLY to make sure we have
+     # rows of 10 each.  No longer used to index images.
+     my $sn=1;
+     foreach 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;
+ 	$grid.=" domain=".$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>
+ ENDPOP
+     return $result;
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item Metadata Viewing Functions
+ 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, and
+ extra custom metadata to show.
+ =over 4
+ =item &detailed_citation_view()
+ =cut
+ ######################################################################
+ ######################################################################
+ sub detailed_citation_view {
+     my %values = @_;
+     my $result=<<END;
+ <i>$values{'owner'}</i>, last revised $values{'lastrevisiondate'}
+ <h3><a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
+     target='search_preview'>$values{'title'}</a></h3>
+ <h3>$values{'author'}</h3>
+ </p>
+ <p>
+ <b>Subject:</b> $values{'subject'}<br />
+ <b>Keyword(s):</b> $values{'keywords'}<br />
+ <b>Notes:</b> $values{'notes'}<br />
+ <b>MIME Type:</b>
+ END
+     $result.=&Apache::loncommon::filedescription($values{'mime'});
+     $result.=<<END;
+ <br />
+ <b>Language:</b>
+ END
+     $result.=&Apache::loncommon::languagedescription($values{'lang'});
+     $result.=<<END;
+ <br />
+ <b>Copyright/Distribution:</b>
+ END
+     $result.=&Apache::loncommon::copyrightdescription($values{'copyright'});
+     $result.=<<END;
+ <br />
+ </p>
+ $values{'extrashow'}
+ <p>
+ $values{'shortabstract'}
  </p>
  END
+     return $result;
  }
-     unless ($compiledresult) {
+ ######################################################################
- 	$compiledresult="There were no results that matched your query";
+ ######################################################################
+ =pod
+ =item &summary_view()
+ =cut
+ ######################################################################
+ ######################################################################
+ sub summary_view {
+     my %values = @_;
+     my $result=<<END;
+ <a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
+    target='search_preview'>$values{'author'}</a><br />
+ $values{'title'}<br />
+ $values{'owner'} -- $values{'lastrevisiondate'}<br />
+ $values{'copyrighttag'}<br />
+ $values{'extrashow'}
+ </p>
+ END
+     return $result;
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &fielded_format_view()
+ =cut
+ ######################################################################
+ ######################################################################
+ sub fielded_format_view {
+     my %values = @_;
+     my $result=<<END;
+ <b>URL: </b> <a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
+               target='search_preview'>$values{'url'}</a>
+ <br />
+ <b>Title:</b> $values{'title'}<br />
+ <b>Author(s):</b> $values{'author'}<br />
+ <b>Subject:</b> $values{'subject'}<br />
+ <b>Keyword(s):</b> $values{'keywords'}<br />
+ <b>Notes:</b> $values{'notes'}<br />
+ <b>MIME Type:</b> $values{'mimetag'}<br />
+ <b>Language:</b> $values{'language'}<br />
+ <b>Creation Date:</b> $values{'creationdate'}<br />
+ <b>Last Revision Date:</b> $values{'lastrevisiondate'}<br />
+ <b>Publisher/Owner:</b> $values{'owner'}<br />
+ <b>Copyright/Distribution:</b> $values{'copyrighttag'}<br />
+ <b>Repository Location:</b> $values{'hostname'}<br />
+ <b>Abstract:</b> $values{'shortabstract'}<br />
+ $values{'extrashow'}
+ </p>
+ END
+     return $result;
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &xml_sgml_view()
+ =back
+ =cut
+ ######################################################################
+ ######################################################################
+ sub xml_sgml_view {
+     my %values = @_;
+     my $result=<<END;
+ <pre>
+ &lt;LonCapaResource&gt;
+ &lt;url&gt;$values{'url'}&lt;/url&gt;
+ &lt;title&gt;$values{'title'}&lt;/title&gt;
+ &lt;author&gt;$values{'author'}&lt;/author&gt;
+ &lt;subject&gt;$values{'subject'}&lt;/subject&gt;
+ &lt;keywords&gt;$values{'keywords'}&lt;/keywords&gt;
+ &lt;notes&gt;$values{'notes'}&lt;/notes&gt;
+ &lt;mimeInfo&gt;
+ &lt;mime&gt;$values{'mime'}&lt;/mime&gt;
+ &lt;mimetag&gt;$values{'mimetag'}&lt;/mimetag&gt;
+ &lt;/mimeInfo&gt;
+ &lt;languageInfo&gt;
+ &lt;language&gt;$values{'lang'}&lt;/language&gt;
+ &lt;languagetag&gt;$values{'language'}&lt;/languagetag&gt;
+ &lt;/languageInfo&gt;
+ &lt;creationdate&gt;$values{'creationdate'}&lt;/creationdate&gt;
+ &lt;lastrevisiondate&gt;$values{'lastrevisiondate'}&lt;/lastrevisiondate&gt;
+ &lt;owner&gt;$values{'owner'}&lt;/owner&gt;
+ &lt;copyrightInfo&gt;
+ &lt;copyright&gt;$values{'copyright'}&lt;/copyright&gt;
+ &lt;copyrighttag&gt;$values{'copyrighttag'}&lt;/copyrighttag&gt;
+ &lt;/copyrightInfo&gt;
+ &lt;repositoryLocation&gt;$values{'hostname'}&lt;/repositoryLocation&gt;
+ &lt;shortabstract&gt;$values{'shortabstract'}&lt;/shortabstract&gt;
+ &lt;/LonCapaResource&gt;
+ </pre>
+ $values{'extrashow'}
+ END
+     return $result;
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &filled() see if field is filled.
+ =cut
+ ######################################################################
+ ######################################################################
+ sub filled {
+     my ($field)=@_;
+     if ($field=~/\S/ && $field ne 'any') {
+ 	return 1;
+     }
+     else {
+ 	return 0;
      }
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &output_blank_field_error()
+ =cut
+ ######################################################################
+ ######################################################################
+ sub output_blank_field_error {
+     my ($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();' />
+ $closebutton
+ <hr />
+ <h3>Helpful Message</h3>
+ <p>
+ Incorrect search query due to blank entry fields.
+ You need to fill in the relevant
+ fields on the search page in order for a query to be
+ processed.
+ </p>
+ </body>
+ </html>
+ RESULTS
+ }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &output_date_error()
+ Output a full html page with an error message.
+ =cut
+ ######################################################################
+ ######################################################################
+ sub output_date_error {
+     my ($r,$message)=@_;
+     # make query information persistent to allow for subsequent revision
+     my $persistent=&make_persistent();
- # Question... allow to ask question from this page, or click to
- # search again?
      $r->print(<<RESULTS);
  <html>
  <head>
  <title>The LearningOnline Network with CAPA</title>
  </head>
  <body bgcolor="#ffffff">
- <img align=right src=/adm/lonIcons/lonlogos.gif>
+ <img align='right' src='/adm/lonIcons/lonlogos.gif' />
  <h1>Search Catalog</h1>
  <form method="post" action="/adm/searchcat">
- <hr>
+ $persistent
- <h3>Search Query</h3>
+ <input type='button' value='Revise search request'
+ onClick='this.form.submit();' />
+ $closebutton
+ <hr />
+ <h3>Helpful Message</h3>
  <p>
- $expression
+ $message
  </p>
- <h3>Search Results</h3>
- $compiledresult
  </body>
  </html>
  RESULTS
+ }
-     return OK;
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &start_fresh_session()
+ Cleans the global %hash by removing all fields which begin with
+ 'pre_' or 'store'.
+ =cut
+ ######################################################################
+ ######################################################################
+ sub start_fresh_session {
+     delete $hash{'mode_catalog'};
+     foreach (keys %hash) {
+         if ($_ =~ /^pre_/) {
+             delete $hash{$_};
+         }
+         if ($_ =~ /^store/) {
+ 	    delete $hash{$_};
+ 	}
+     }
  }
+ ######################################################################
+ ######################################################################
+ =pod
+ =item &popwin_js() send javascript to popwin
+ =cut
+ ######################################################################
+ ######################################################################
+ 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();
+ }
+ ######################################################################
+ ######################################################################
+ =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.'";');
+ }
 ;
  __END__
+ =pod
+ =back
+ =cut

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

Removed from v.1.7
changed lines
	Added in v.1.128