--- loncom/interface/lonsearchcat.pm 2001/03/15 20:58:03 1.36
+++ loncom/interface/lonsearchcat.pm 2002/06/24 16:45:22 1.128
@@ -1,129 +1,381 @@
-# The LearningOnline Network
+# The LearningOnline Network with CAPA
# Search Catalog
#
-# 03/08/2001 Scott Harrison
+# $Id: lonsearchcat.pm,v 1.128 2002/06/24 16:45:22 harris41 Exp $
#
+# 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
+
+=item $closebutton
+
+button that closes the search window
+
+=item $importbutton
+
+button to take the selecte results and go to group sorting
+
+=item %hash
+
+The ubiquitous database hash
-my %language;
-my $scrout;
-my %metadatafields;
-my %cprtag;
-my %mimetag;
+=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 $r = shift;
-
-# -------------------------------------- see if called from an interactive mode
- map {
- my ($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'}));
+ untie %hash;
$r->content_type('text/html');
$r->send_http_header;
return OK if $r->header_only;
- %metadatafields=();
-
- my $hidden='';
- $hidden=<<END if $ENV{'form.catalogmode'} eq 'interactive';
-<input type='hidden' name='catalogmode' value='interactive'>
-END
-
-# ------------------------------------------------ First, check out environment
- $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'};
-
-# --------------------------------- Compute various listings of metadata values
-
- %language=();
- $language{'any'}='Any language';
- {
- my $fh=Apache::File->new($r->dir_config('lonTabDir').'/language.tab');
- map {
- $_=~/(\w+)\s+([\w\s\-]+)/;
- $language{$1}=$2;
- } <$fh>;
- }
-
- %cprtag=();
- $cprtag{'any'}='Any copyright/distribution';
- {
- 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>;
+ my $domain = $r->dir_config('lonDefDomain');
+ $diropendb= "/home/httpd/perl/tmp/".&Apache::lonnet::escape($domain).
+ "\_".&Apache::lonnet::escape($ENV{'user.name'})."_searchcat.db";
+
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+ ['catalogmode','launch','acts','mode','form','element',
+ 'reqinterface']);
+ ##
+ ## Clear out old values from database
+ ##
+ if ($ENV{'form.launch'} eq '1') {
+ if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
+ &start_fresh_session();
+ untie %hash;
+ } else {
+ $r->print('<html><head></head><body>Unable to tie hash to db '.
+ 'file</body></html>');
+ return OK;
+ }
}
-
+ ##
+ ## 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);
+ # 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,$hidden));
}
- elsif ($ENV{'form.advancedsubmit'} eq 'SEARCH') {
- return &advancedsearch($r,\%ENV);
+ return OK;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &basic_search_form()
+
+Returns a scalar which holds html for the basic search form.
+
+=cut
+
+######################################################################
+######################################################################
+
+sub basic_search_form{
+ my ($closebutton,$hidden) = @_;
+ my $scrout=<<"ENDDOCUMENT";
+<html>
+<head>
+<title>The LearningOnline Network with CAPA</title>
+<script type="text/javascript">
+ function openhelp(val) {
+ openhelpwin=open('/adm/help/searchcat.html','helpscreen',
+ 'scrollbars=1,width=600,height=300');
+ openhelpwin.focus();
}
+</script>
+</head>
+<body bgcolor="#FFFFFF">
+<img align='right' src='/adm/lonIcons/lonlogos.gif' />
+<h1>Search Catalog</h1>
+<form method="post" action="/adm/searchcat">
+$hidden
+<h3>Basic Search</h3>
+<p>
+Enter terms or phrases separated by AND, OR, or NOT then press SEARCH below.
+</p>
+<p>
+<table>
+<tr><td>
+ENDDOCUMENT
+ $scrout.=' '.&simpletextfield('basicexp',$ENV{'form.basicexp'},40).
+ ' ';
+# $scrout.=&simplecheckbox('allversions',$ENV{'form.allversions'});
+# $scrout.='<font color="#800000">Search historic archives</font>';
+ $scrout.=<<ENDDOCUMENT;
+</td><td><a href="/adm/searchcat?reqinterface=advanced">Advanced Search</a></td></tr></table>
+</p>
+<p>
+ <input type="submit" name="basicsubmit" value='SEARCH' />
+$closebutton
+<!-- basic view selection -->
+<select name='basicviewselect'>
+<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 basic view selection -->
+<input type="button" value="HELP" onClick="openhelp()" />
+</p>
+</form>
+</body>
+</html>
+ENDDOCUMENT
+ return $scrout;
+}
+######################################################################
+######################################################################
+
+=pod
+
+=item &advanced_search_form()
- $scrout=''; # building a part of screen output
+Returns a scalar which holds html for the advanced search form.
+
+=cut
+
+######################################################################
+######################################################################
+
+sub advanced_search_form{
+ my ($closebutton,$hidden) = @_;
+ my $scrout=<<"ENDHEADER";
+<html>
+<head>
+<title>The LearningOnline Network with CAPA</title>
+<script type="text/javascript">
+ function openhelp(val) {
+ openhelpwin=open('/adm/help/searchcat.html','helpscreen',
+ 'scrollbars=1,width=600,height=300');
+ openhelpwin.focus();
+ }
+</script>
+</head>
+<body bgcolor="#FFFFFF">
+<img align='right' src='/adm/lonIcons/lonlogos.gif' />
+<h1>Search Catalog</h1>
+<form method="post" action="/adm/searchcat">
+$hidden
+<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 version','version',
+# $ENV{'form.version'});
$scrout.=&searchphrasefield('Limit by notes','notes',
$ENV{'form.notes'});
-
$scrout.=&searchphrasefield('Limit by abstract','abstract',
$ENV{'form.abstract'});
-
- $ENV{'form.mime'}='notxxx' unless length($ENV{'form.mime'});
+ $ENV{'form.mime'}='any' unless length($ENV{'form.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'});
-
$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
$scrout.=<<CREATIONDATESTART;
<p>
<font color="#800000" face="helvetica"><b>LIMIT BY CREATION DATE RANGE:</b>
</font>
-<br>
+<br />
between:
CREATIONDATESTART
$scrout.=&dateboxes('creationdatestart',1,1,1976,
@@ -131,21 +383,18 @@ CREATIONDATESTART
$ENV{'form.creationdatestart_day'},
$ENV{'form.creationdatestart_year'},
);
- $scrout.=<<CREATIONDATEEND;
-and:
-CREATIONDATEEND
+ $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>
<font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:
</b></font>
-<br>between:
+<br />between:
LASTREVISIONDATESTART
$scrout.=&dateboxes('lastrevisiondatestart',1,1,1976,
$ENV{'form.lastrevisiondatestart_month'},
@@ -161,455 +410,986 @@ LASTREVISIONDATEEND
$ENV{'form.lastrevisiondateend_year'},
);
$scrout.='</p>';
-
$scrout.=&searchphrasefield('Limit by publisher/owner','owner',
$ENV{'form.owner'});
-# $metadatafields{'owner'});
-
$ENV{'form.copyright'}='any' unless length($ENV{'form.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
$scrout.=<<CUSTOMMETADATA;
<p>
-<font color="#800000" face="helvetica"><b>LIMIT BY OTHER METADATA FIELDS:</b>
+<font color="#800000" face="helvetica"><b>LIMIT BY SPECIAL METADATA FIELDS:</b>
</font>
-For author-specific metadata, enter in an expression in the form of
-<i>key</i>=<i>value</i> separated by operators such as AND or OR.<br>
+For resource-specific metadata, enter in an expression in the form of
+<i>key</i>=<i>value</i> separated by operators such as AND, OR or NOT.<br />
<b>Example:</b> grandmother=75 OR grandfather=85
-<br>
+<br />
CUSTOMMETADATA
-$scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});
-$scrout.=' <i>initial users of this system do not need to worry about this option</i>';
-
-# ---------------------------------------------------------------- Print screen
- $r->print(<<ENDDOCUMENT);
-<html>
-<head>
-<title>The LearningOnline Network with CAPA</title>
-</head>
-<body bgcolor="#FFFFFF">
-<img align=right src=/adm/lonIcons/lonlogos.gif>
-<h1>Search Catalog</h1>
-<form method="post" action="/adm/searchcat">
-$hidden
-<hr>
-<h3>Basic Search</h3>
+ $scrout.=&simpletextfield('custommetadata',$ENV{'form.custommetadata'});
+ $scrout.=<<CUSTOMSHOW;
<p>
-Enter terms or phrases separated by search operators
-such as AND or OR then press SEARCH below. Terms should be specific
-to the title, author, subject, notes, or abstract information associated
-with a resource.
-<br>
-ENDDOCUMENT
- $r->print(&simpletextfield('basicexp',$ENV{'form.basicexp'}));
- $r->print(' ');
- $r->print(&simplecheckbox('titleonly',$ENV{'form.titleonly'}));
- $r->print('<font color="#800000">Title only</font> ');
- $r->print(&simplecheckbox('allversions',$ENV{'form.allversions'}));
- $r->print(<<ENDDOCUMENT);
-<font color="#800000">Search historic archives</font>
-<br>
-<input type="submit" name="basicsubmit" value="SEARCH">
-<input type="reset" name="reset" value="RESET">
-<input type="button" name="close" value="CLOSE" onClick="self.close()">
-</p>
-<hr>
-<h3>Advanced Search</h3>
-$scrout
+<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'});
+ $scrout.=<<ENDDOCUMENT;
<p>
-<input type="submit" name="advancedsubmit" value="SEARCH">
-<input type="reset" name="reset" value="RESET">
-<input type="button" name="close" value="CLOSE" onClick="self.close()">
+<input type="submit" name="advancedsubmit" value='SEARCH' />
+<input type="reset" name="reset" value='RESET' />
+$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 $scrout;
+}
-# --------------------------------------------------------- Various form fields
+######################################################################
+######################################################################
-sub textfield {
- my ($title,$name,$value)=@_;
- return "\n<p><b>$title:</b><br>".
- '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
+=pod
+
+=item &make_persistent()
+
+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,$value)=@_;
- return '<input type=text name="'.$name.'" size=20 value="'.$value.'">';
+ my ($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.'" '. $checked . '>';
+ return '<input type="checkbox" name="'.$name.'" '. $checked . ' />';
}
sub searchphrasefield {
my ($title,$name,$value)=@_;
my $instruction=<<END;
-Enter terms or phrases separated by search operators such
-as AND or OR.
+Enter terms or phrases separated by search operators such as AND, OR, or NOT.
END
my $uctitle=uc($title);
- return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:</b>".
- "</FONT> $instruction<br>".
- '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
+ return "\n".
+ '<p><font color="#800000" face="helvetica"><b>'.$uctitle.':</b>'.
+ "</FONT> $instruction<br />".&simpletextfield($name,$value,80);
}
sub dateboxes {
my ($name,$defaultmonth,$defaultday,$defaultyear,
$currentmonth,$currentday,$currentyear)=@_;
($defaultmonth,$defaultday,$defaultyear)=('','','');
- my $month=<<END;
-<select name="${name}_month">
-<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);
+ #
+ # Day
my $day=<<END;
<select name="${name}_day">
<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
+ 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>
-<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
+ 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:".
- "</b></font><br>".'<select name="'.$name.'">';
- map {
+ my $selout="\n".'<p><font color="#800000" face="helvetica">'.
+ '<b>'.$uctitle.':</b></font><br /><select name="'.$name.'">';
+ foreach ($anyvalue,@idlist) {
$selout.='<option value="'.$_.'"';
- if ($_ eq $value) { $selout.=' selected'; }
- $selout.='>'.$options{$_}.'</option>';
- } sort keys %options;
+ if ($_ eq $value and !/^any$/) {
+ $selout.=' selected >'.&{$functionref}($_).'</option>';
+ }
+ elsif ($_ eq $value and /^$anyvalue$/) {
+ $selout.=' selected >'.$anytag.'</option>';
+ }
+ else {$selout.='>'.&{$functionref}($_).'</option>';}
+ }
return $selout.'</select>';
}
-# ------------------------------------------------ Performing a advanced search
+######################################################################
+######################################################################
+
+=pod
+
+=item &advancedsearch()
+
+Parse advanced search results.
+
+=cut
+
+######################################################################
+######################################################################
sub advancedsearch {
- my ($r,$envhash)=@_;
+ my ($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.basicexp'})) {
+ if (&filled($ENV{"form.$field"})) {
$fillflag++;
}
}
-
unless ($fillflag) {
&output_blank_field_error($r);
return OK;
}
-
- $r->print(<<END);
-Advanced searching is not yet implemented.
-END
- return OK;
-}
-
-# ---------------------------------------------------- see if a field is filled
-sub filled {
- my ($field)=@_;
- if ($field=~/\S/) {
- return 1;
+ # 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});
+ }
}
- else {
- return 0;
+ # 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,$hidden);
+ return OK;
+ }
+ # should not get to this point
+ return 'Error. Should not have gone to this point.';
}
-# --------------------------------------------------- Performing a basic search
+######################################################################
+######################################################################
+
+=pod
+
+=item &basicsearch()
+
+Parse basic search form.
+
+=cut
+
+######################################################################
+######################################################################
sub basicsearch {
- my ($r,$envhash)=@_;
+ my ($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;
+ }
+ # Check to see if enough is filled in
unless (&filled($ENV{'form.basicexp'})) {
&output_blank_field_error($r);
return OK;
}
- my $query=$ENV{'form.basicexp'};
+ # Build SQL query string based on form page
+ my $query='';
my $concatarg=join('," ",',
- ('title', 'author', 'subject', 'notes', 'abstract'));
+ ('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);
- $query="select * from metadata where concat($concatarg) like '\%$ENV{'form.basicexp'}\%'";
- my $reply=&Apache::lonnet::metadata_query($query);
- &output_results($r,$envhash,$reply);
return OK;
}
-sub output_blank_field_error {
- my ($r)=@_;
- # 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);
- $r->print(<<BEGINNING);
-<html>
-<head>
-<title>The LearningOnline Network with CAPA</title>
-BEGINNING
- $r->print(<<RESULTS);
+######################################################################
+######################################################################
+
+=pod
+
+=item &build_SQL_query()
+
+Builds a SQL query string from a logical expression with AND/OR keywords
+using Text::Query and &recursive_SQL_query_builder()
+
+=cut
+
+######################################################################
+######################################################################
+sub build_SQL_query {
+ my ($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
+ $r->print(<<CATALOGBEGIN);
</head>
<body bgcolor="#ffffff">
<img align=right src=/adm/lonIcons/lonlogos.gif>
<h1>Search Catalog</h1>
-<form method="post" action="/adm/searchcat">
-$persistent
+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();'>
-<input type='button' value='CLOSE'
-onClick='self.close();'>
-<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
-}
-
-# ----------------------------- format and output results based on a reply list
-sub output_results {
- my ($r,$envhash,@replylist)=@_;
- my %ENV=%{$envhash};
- foreach my $reply (@replylist) {
-
+onClick='this.form.submit();' />
+$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;
-
- 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 $replyfile;
- sleep 1;
+ if ($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;");
}
- # 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>;
- }
-
- my $compiledresult='';
-
- foreach my $result (@results) {
- my ($title,$author,$subject,$url,$keywords,$version,
- $notes,$abstract,$mime,$lang,
- $creationdate,$lastrevisiondate,$owner,$copyright
- )=map {&Apache::lonnet::unescape($_)} (split(/\,/,$result));
- my $shortabstract=$abstract;
- $shortabstract=substr($abstract,0,200) if length($abstract)>200;
- $compiledresult.=<<END;
-<p>
-END
- $compiledresult.=<<END if $ENV{'form.catalogmode'} eq 'interactive';
+ &popwin_js($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('$title','$url')">
+onClick="javascript:select_data('$titleesc','$Fields{'url'}')">
</font>
-<br>
+<br />
END
- $compiledresult.=<<END;
-<b>URL: </b> <A HREF="http://$ENV{'HTTP_HOST'}$url" TARGET='search_preview'>$url</A>
-<br>
-<b>Title:</b> $title<br>
-<b>Author(s):</b> $author<br>
-<b>Subject:</b> $subject<br>
-<b>Keyword(s):</b> $keywords<br>
-<b>Notes:</b> $notes<br>
-<b>Abstract:</b> $shortabstract<br>
-<b>MIME Type:</b> $mimetag{$mime}<br>
-<b>Language:</b> $language{$lang}<br>
-<b>Creation Date:</b> $creationdate<br>
-<b>Last Revision Date:</b> $lastrevisiondate<br>
-<b>Publisher/Owner:</b> $owner<br>
-<b>Copyright/Distribution:</b> $copyright<br>
-<b>Repository Location:</b> $hostname
-</p>
+ }
+ if ($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 => $rkey );
+ }
+ }
+ untie %hash;
}
-
- unless ($compiledresult) {
- $compiledresult="There were no results that matched your query";
+ if ($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;
+}
- # 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);
+###########################################################
+###########################################################
+
+=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 $result (@results) {
+ if ($result=~/^(custom\=.*)$/) { # grab all custom metadata
+ my $tmp=$result;
+ $tmp=~s/^custom\=//;
+ my ($k,$v)=map {&Apache::lonnet::unescape($_);
+ } split(/\,/,$tmp);
+ $customhash{$k}=$v;
+ }
+ }
+ return ($extrashow,\@customfields,\%customhash);
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &search_results_header
+
+Output the proper javascript code to deal with different calling modes.
- $r->print(<<BEGINNING);
+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
- $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') {
+ $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) {
@@ -623,30 +1403,512 @@ BEGINNING
}
</script>
SCRIPT
- $r->print(<<RESULTS);
+ } elsif ($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;
+}
+
+######################################################################
+######################################################################
+
+=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 $result=<<END;
+<pre>
+<LonCapaResource>
+<url>$values{'url'}</url>
+<title>$values{'title'}</title>
+<author>$values{'author'}</author>
+<subject>$values{'subject'}</subject>
+<keywords>$values{'keywords'}</keywords>
+<notes>$values{'notes'}</notes>
+<mimeInfo>
+<mime>$values{'mime'}</mime>
+<mimetag>$values{'mimetag'}</mimetag>
+</mimeInfo>
+<languageInfo>
+<language>$values{'lang'}</language>
+<languagetag>$values{'language'}</languagetag>
+</languageInfo>
+<creationdate>$values{'creationdate'}</creationdate>
+<lastrevisiondate>$values{'lastrevisiondate'}</lastrevisiondate>
+<owner>$values{'owner'}</owner>
+<copyrightInfo>
+<copyright>$values{'copyright'}</copyright>
+<copyrighttag>$values{'copyrighttag'}</copyrighttag>
+</copyrightInfo>
+<repositoryLocation>$values{'hostname'}</repositoryLocation>
+<shortabstract>$values{'shortabstract'}</shortabstract>
+</LonCapaResource>
+</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
+ $r->print(<<RESULTS);
</head>
<body bgcolor="#ffffff">
-<img align=right src=/adm/lonIcons/lonlogos.gif>
+<img align='right' src='/adm/lonIcons/lonlogos.gif' />
<h1>Search Catalog</h1>
-$testval
<form method="post" action="/adm/searchcat">
+$persistent
<input type='button' value='Revise search request'
-onClick='this.form.submit();'>
-<input type='button' value='CLOSE'
-onClick='self.close();'>
+onClick='this.form.submit();' />
+$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();
+
+ $r->print(<<RESULTS);
+<html>
+<head>
+<title>The LearningOnline Network with CAPA</title>
+</head>
+<body bgcolor="#ffffff">
+<img align='right' src='/adm/lonIcons/lonlogos.gif' />
+<h1>Search Catalog</h1>
+<form method="post" action="/adm/searchcat">
$persistent
-<hr>
-<h3>Search Query</h3>
+<input type='button' value='Revise search request'
+onClick='this.form.submit();' />
+$closebutton
+<hr />
+<h3>Helpful Message</h3>
<p>
-<b>Basic search:</b> $ENV{'form.basicexp'}
+$message
</p>
-<h3>Search Results</h3>
-$compiledresult
</body>
</html>
RESULTS
+}
+
+######################################################################
+######################################################################
+
+=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.'";');
+}
+
1;
+
__END__
+
+=pod
+
+=back
+
+=cut