--- loncom/interface/lonsearchcat.pm 2001/03/08 20:54:53 1.6
+++ loncom/interface/lonsearchcat.pm 2004/07/19 16:38:07 1.231
@@ -1,778 +1,3574 @@
-# The LearningOnline Network
+# The LearningOnline Network with CAPA
# Search Catalog
#
-# 03/08/2001 Scott Harrison
+# $Id: lonsearchcat.pm,v 1.231 2004/07/19 16:38:07 raeburn 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/
+#
+###############################################################################
+###############################################################################
+
+=pod
+
+=head1 NAME
+
+lonsearchcat - LONCAPA Search Interface
+
+=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 separate window.
+
+=head1 Internals
+
+=over 4
+
+=cut
+
+###############################################################################
+###############################################################################
+
package Apache::lonsearchcat;
use strict;
-use Apache::Constants qw(:common);
+use Apache::Constants qw(:common :http);
use Apache::lonnet();
use Apache::File();
+use CGI qw(:standard);
+use Text::Query;
+use GDBM_File;
+use Apache::loncommon();
+use Apache::lonmysql();
+use Apache::lonmeta;
+use Apache::lonhtmlcommon;
+use Apache::lonlocal;
+use LONCAPA::lonmetadata();
+use HTML::Entities();
+use Parse::RecDescent;
+use Apache::lonnavmaps;
+
+######################################################################
+######################################################################
+##
+## Global variables
+##
+######################################################################
+######################################################################
+my %groupsearch_db; # Database hash used to save values for the
+ # groupsearch RAT interface.
+my %persistent_db; # gdbm hash which holds data which is supposed to
+ # persist across calls to lonsearchcat.pm
+
+# The different view modes and associated functions
+
+my %Views = ("detailed" => \&detailed_citation_view,
+ "summary" => \&summary_view,
+ "fielded" => \&fielded_format_view,
+ "xml" => \&xml_sgml_view,
+ "compact" => \&compact_view);
-my %language;
-my $scrout;
-my %metadatafields;
-my %cprtag;
-my %mimetag;
-
+######################################################################
+######################################################################
sub handler {
my $r = shift;
- $r->content_type('text/html');
+# &set_defaults();
+ #
+ # set form defaults
+ #
+ my $hidden_fields;# Hold all the hidden fields used to keep track
+ # of the search system state
+ my $importbutton; # button to take the selected results and go to group
+ # sorting
+ my $diropendb; # The full path to the (temporary) search database file.
+ # This is set and used in &handler() and is also used in
+ # &output_results().
+ my $bodytag; # LON-CAPA standard body tag, gotten from
+ # &Apache::lonnet::bodytag.
+ # No title, no table, just a <body> tag.
+
+ my $loaderror=&Apache::lonnet::overloaderror($r);
+ if ($loaderror) { return $loaderror; }
+ #
+ my $closebutton; # button that closes the search window
+ # This button is different for the RAT compared to
+ # normal invocation.
+ #
+ &Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
return OK if $r->header_only;
+ ##
+ ## Prevent caching of the search interface window. Hopefully this means
+ ## we will get the launch=1 passed in a little more.
+ &Apache::loncommon::no_cache($r);
+ ##
+ ## Pick up form fields passed in the links.
+ ##
+ &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+ ['catalogmode','launch','acts','mode','form','element','pause',
+ 'phase','persistent_db_id','table','start','show',
+ 'cleargroupsort','titleelement']);
+ ##
+ ## The following is a trick - we wait a few seconds if asked to so
+ ## the daemon running the search can get ahead of the daemon
+ ## printing the results. We only need (theoretically) to do
+ ## this once, so the pause indicator is deleted
+ ##
+ if (exists($ENV{'form.pause'})) {
+ sleep(1);
+ delete($ENV{'form.pause'});
+ }
+ ##
+ ## Initialize global variables
+ ##
+ my $domain = $r->dir_config('lonDefDomain');
+ $diropendb= "/home/httpd/perl/tmp/".
+ "$ENV{'user.domain'}_$ENV{'user.name'}_searchcat.db";
+ #
+ # set the name of the persistent database
+ # $ENV{'form.persistent_db_id'} can only have digits in it.
+ if (! exists($ENV{'form.persistent_db_id'}) ||
+ ($ENV{'form.persistent_db_id'} =~ /\D/) ||
+ ($ENV{'form.launch'} eq '1')) {
+ $ENV{'form.persistent_db_id'} = time;
+ }
+ $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
+ my $persistent_db_file = "/home/httpd/perl/tmp/".
+ &Apache::lonnet::escape($domain).
+ '_'.&Apache::lonnet::escape($ENV{'user.name'}).
+ '_'.$ENV{'form.persistent_db_id'}.'_persistent_search.db';
+ ##
+ &Apache::lonhtmlcommon::clear_breadcrumbs();
+ if (exists($ENV{'request.course.id'}) && $ENV{'request.course.id'} ne '') {
+ &Apache::lonhtmlcommon::add_breadcrumb
+ ({href=>'/adm/searchcat?'.
+ 'catalogmode='.$ENV{'form.catalogmode'}.
+ '&launch='.$ENV{'form.launch'}.
+ '&mode='.$ENV{'form.mode'},
+ text=>"Course and Catalog Search",
+ target=>'_top',
+ bug=>'Searching',});
+ } else {
+ &Apache::lonhtmlcommon::add_breadcrumb
+ ({href=>'/adm/searchcat?'.
+ 'catalogmode='.$ENV{'form.catalogmode'}.
+ '&launch='.$ENV{'form.launch'}.
+ '&mode='.$ENV{'form.mode'},
+ text=>"Catalog Search",
+ target=>'_top',
+ bug=>'Searching',});
+ }
+ #
+ if ($ENV{'form.phase'} !~ m/(basic|adv|course)_search/) {
+ if (! &get_persistent_form_data($persistent_db_file)) {
+ if ($ENV{'form.phase'} =~ /(run_search|results)/) {
+ &Apache::lonnet::logthis('lonsearchcat:'.
+ 'Unable to recover data from '.
+ $persistent_db_file);
+ $r->print(<<END);
+<html>
+<head><title>LON-CAPA Search Error</title></head>
+$bodytag
+We were unable to retrieve data describing your search. This is a serious
+error and has been logged. Please alert your LON-CAPA administrator.
+</body>
+</html>
+END
+ return OK;
+ }
+ }
+ } else {
+ &clean_up_environment();
+ }
+ ##
+ ## Clear out old values from groupsearch database
+ ##
+ untie %groupsearch_db if (tied(%groupsearch_db));
+ if (($ENV{'form.cleargroupsort'} eq '1') ||
+ (($ENV{'form.launch'} eq '1') &&
+ ($ENV{'form.catalogmode'} eq 'groupsearch'))) {
+ if (tie(%groupsearch_db,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
+ &start_fresh_session();
+ untie %groupsearch_db;
+ delete($ENV{'form.cleargroupsort'});
+ } else {
+ # This is a stupid error to give to the user.
+ # It really tells them nothing.
+ $r->print('<html><head></head>'.$bodytag.
+ 'Unable to tie hash to db file</body></html>');
+ return OK;
+ }
+ }
+ ##
+ ## Configure hidden fields
+ ##
+ $hidden_fields = '<input type="hidden" name="persistent_db_id" value="'.
+ $ENV{'form.persistent_db_id'}.'" />'."\n";
+ if (exists($ENV{'form.catalogmode'})) {
+ $hidden_fields .= &hidden_field('catalogmode');
+ }
+ if (exists($ENV{'form.form'})) {
+ $hidden_fields .= &hidden_field('form');
+ }
+ if (exists($ENV{'form.element'})) {
+ $hidden_fields .= &hidden_field('element');
+ }
+ if (exists($ENV{'form.titleelement'})) {
+ $hidden_fields .= &hidden_field('titleelement');
+ }
+ if (exists($ENV{'form.mode'})) {
+ $hidden_fields .= &hidden_field('mode');
+ }
+ ##
+ ## Configure dynamic components of interface
+ ##
+ if ($ENV{'form.catalogmode'} eq 'interactive') {
+ $closebutton="<input type='button' name='close' value='CLOSE' ";
+ if ($ENV{'form.phase'} =~ /(results|run_search)/) {
+ $closebutton .="onClick='parent.close()'";
+ } else {
+ $closebutton .="onClick='self.close()'";
+ }
+ $closebutton .=">\n";
+ } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
+ $closebutton="<input type='button' name='close' value='CLOSE' ";
+ if ($ENV{'form.phase'} =~ /(results|run_search)/) {
+ $closebutton .="onClick='parent.close()'";
+ } else {
+ $closebutton .="onClick='self.close()'";
+ }
+ $closebutton .= ">";
+ $importbutton=<<END;
+<input type='button' name='import' value='IMPORT'
+onClick='javascript:select_group()'>
+END
+ } else {
+ $closebutton = '';
+ $importbutton = '';
+ }
+ ##
+ ## Sanity checks on form elements
+ ##
+ if (!defined($ENV{'form.viewselect'})) {
+ if (($ENV{'form.catalogmode'} eq 'groupsearch') ||
+ ($ENV{'form.catalogmode'} eq 'interactive')) {
+ $ENV{'form.viewselect'} ="Compact View";
+ } else {
+ $ENV{'form.viewselect'} ="Detailed Citation View";
+ }
+ }
+ $ENV{'form.phase'} = 'disp_basic' if (! exists($ENV{'form.phase'}));
+ $ENV{'form.show'} = 20 if (! exists($ENV{'form.show'}));
+ #
+ $ENV{'form.searchmode'} = 'basic' if (! exists($ENV{'form.searchmode'}));
+ if ($ENV{'form.phase'} eq 'adv_search' ||
+ $ENV{'form.phase'} eq 'disp_adv') {
+ $ENV{'form.searchmode'} = 'advanced';
+ } elsif ($ENV{'form.phase'} eq 'course_search') {
+ $ENV{'form.searchmode'} = 'course_search';
+ }
+ #
+ if ($ENV{'form.searchmode'} eq 'advanced') {
+ &Apache::lonhtmlcommon::add_breadcrumb
+ ({href=>'/adm/searchcat?phase=disp_adv&'.
+ 'catalogmode='.$ENV{'form.catalogmode'}.
+ '&launch='.$ENV{'form.launch'}.
+ '&mode='.$ENV{'form.mode'},
+ text=>"Advanced Search",
+ bug=>'Searching',});
+ } elsif ($ENV{'form.searchmode'} eq 'course search') {
+ &Apache::lonhtmlcommon::add_breadcrumb
+ ({href=>'/adm/searchcat?phase=disp_adv&'.
+ 'catalogmode='.$ENV{'form.catalogmode'}.
+ '&launch='.$ENV{'form.launch'}.
+ '&mode='.$ENV{'form.mode'},
+ text=>"Course Search",
+ bug=>'Searching',});
+ }
+ ##
+ ## Switch on the phase
+ ##
+ if ($ENV{'form.phase'} eq 'disp_basic') {
+ &print_basic_search_form($r,$closebutton,$hidden_fields);
+ } elsif ($ENV{'form.phase'} eq 'disp_adv') {
+ &print_advanced_search_form($r,$closebutton,$hidden_fields);
+ } elsif ($ENV{'form.phase'} eq 'results') {
+ &display_results($r,$importbutton,$closebutton,$diropendb);
+ } elsif ($ENV{'form.phase'} =~ /^(sort|run_search)$/) {
+ my ($query,$customquery,$customshow,$libraries,$pretty_string) =
+ &get_persistent_data($persistent_db_file,
+ ['query','customquery','customshow',
+ 'libraries','pretty_string']);
+ if ($ENV{'form.phase'} eq 'sort') {
+ &print_sort_form($r,$pretty_string);
+ } elsif ($ENV{'form.phase'} eq 'run_search') {
+ &run_search($r,$query,$customquery,$customshow,
+ $libraries,$pretty_string);
+ }
+ } elsif ($ENV{'form.phase'} eq 'course_search') {
+ &course_search($r);
+ } elsif(($ENV{'form.phase'} eq 'basic_search') ||
+ ($ENV{'form.phase'} eq 'adv_search')) {
+ #
+ # We are running a search, try to parse it
+ my ($query,$customquery,$customshow,$libraries) =
+ (undef,undef,undef,undef);
+ my $pretty_string;
+ if ($ENV{'form.phase'} eq 'basic_search') {
+ ($query,$pretty_string,$libraries) =
+ &parse_basic_search($r,$closebutton,$hidden_fields);
+ return OK if (! defined($query));
+ &make_persistent({ basicexp => $ENV{'form.basicexp'}},
+ $persistent_db_file);
+ } else { # Advanced search
+ ($query,$customquery,$customshow,$libraries,$pretty_string)
+ = &parse_advanced_search($r,$closebutton,$hidden_fields);
+ return OK if (! defined($query));
+ }
+ &make_persistent({ query => $query,
+ customquery => $customquery,
+ customshow => $customshow,
+ libraries => $libraries,
+ pretty_string => $pretty_string },
+ $persistent_db_file);
+ #
+ # Set up table
+ if (! defined(&create_results_table())) {
+ my $errorstring=&Apache::lonmysql::get_error();
+ &Apache::lonnet::logthis('lonsearchcat.pm: Unable to create '.
+ 'needed table. lonmysql error:'.
+ $errorstring);
+ $r->print(<<END);
+<html><head><title>Search Error</title></head>
+$bodytag
+Unable to create table in which to store search results.
+The search has been aborted.
+</body>
+</html>
+END
+ return OK;
+ }
+ delete($ENV{'form.launch'});
+ if (! &make_form_data_persistent($r,$persistent_db_file)) {
+ $r->print(<<END);
+<html><head><title>Search Error</title></head>
+$bodytag
+Unable to properly store search information. The search has been aborted.
+</body>
+</html>
+END
+ return OK;
+ }
+ ##
+ ## Print out the frames interface
+ ##
+ if (defined($query)) {
+ &print_frames_interface($r);
+ }
+ }
+ return OK;
+}
- %metadatafields=();
+#
+# The mechanism used to store values away and retrieve them does not
+# handle the case of missing environment variables being significant.
+#
+# This routine sets non existant checkbox form elements to ''.
+#
+sub clean_up_environment {
+ if ($ENV{'form.phase'} eq 'basic_search') {
+ if (! exists($ENV{'form.related'})) {
+ $ENV{'form.related'} = '';
+ }
+ if (! exists($ENV{'form.domains'})) {
+ $ENV{'form.domains'} = '';
+ }
+ } elsif ($ENV{'form.phase'} eq 'adv_search') {
+ foreach my $field ('title','keywords','notes',
+ 'abstract','standards','mime') {
+ if (! exists($ENV{'form.'.$field.'_related'})) {
+ $ENV{'form.'.$field.'_related'} = '';
+ }
+ }
+ } elsif ($ENV{'form.phase'} eq 'course_search') {
+ if (! exists($ENV{'form.crsrelated'})) {
+ $ENV{'form.crsrelated'} = '';
+ }
+ }
+}
-# ------------------------------------------------ First, check out environment
- $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'};
+sub hidden_field {
+ my ($name,$value) = @_;
+ if (! defined($value)) {
+ $value = $ENV{'form.'.$name};
+ }
+ return '<input type="hidden" name="'.$name.'" value="'.$value.'" />'.$/;
+}
-
- %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>;
+######################################################################
+######################################################################
+##
+## Course Search
+##
+######################################################################
+######################################################################
+{ # Scope the course search to avoid global variables
+#
+# Variables For course search
+my %alreadyseen;
+my %hash;
+my $totalfound;
+
+sub course_search {
+ my $r=shift;
+ my $bodytag=&Apache::loncommon::bodytag('Course Search');
+ my $pretty_search_string = '<b>'.$ENV{'form.courseexp'}.'</b>';
+ my $search_string = $ENV{'form.courseexp'};
+ my @New_Words;
+ if ($ENV{'form.crsrelated'}) {
+ ($search_string,@New_Words) = &related_version($ENV{'form.courseexp'});
+ if (@New_Words) {
+ $pretty_search_string .= ' '.&mt("with related words").": <b>@New_Words</b>.";
+ } else {
+ $pretty_search_string .= ' '.&mt('with no related words').".";
+ }
+ }
+ my $fulltext=$ENV{'form.crsfulltext'};
+ my $discuss=$ENV{'form.crsdiscuss'};
+ my @allwords=($search_string,@New_Words);
+ $totalfound=0;
+ $r->print('<html><head><title>LON-CAPA Course Search</title></head>'.
+ $bodytag.'<hr /><center><font size="+2" face="arial">'.$pretty_search_string.'</font></center><hr /><b>'.&mt('Course content').':</b><br />');
+ $r->rflush();
+# ======================================================= Go through the course
+ undef %alreadyseen;
+ %alreadyseen=();
+ my $c=$r->connection;
+ if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.".db",
+ &GDBM_READER(),0640)) {
+ foreach (keys %hash) {
+ if ($c->aborted()) { last; }
+ if (($_=~/^src\_(.+)$/) && (!$alreadyseen{$hash{$_}})) {
+ &checkonthis($r,$hash{$_},0,$hash{'title_'.$1},$fulltext,
+ @allwords);
+ }
+ }
+ untie(%hash);
+ }
+ unless ($totalfound) {
+ $r->print('<p>'.&mt('No matches found in resources').'.</p>');
}
- %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>;
+# Check discussions if requested
+ if ($discuss) {
+ my $totaldiscussions = 0;
+ $r->print('<br /><br /><b>'.&mt('Discussion postings').':</b><br />');
+ my $navmap = Apache::lonnavmaps::navmap->new();
+ my @allres=$navmap->retrieveResources();
+ my %discussiontime = &Apache::lonnet::dump('discussiontimes',
+ $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+ $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+ foreach my $resource (@allres) {
+ my $result = '';
+ my $applies = 0;
+ my $symb = $resource->symb();
+ my $ressymb = $symb;
+ if ($symb =~ m#(___adm/\w+/\w+)/(\d+)/bulletinboard$#) {
+ $ressymb = 'bulletin___'.$2.$1.'/'.$2.'/bulletinboard';
+ unless ($ressymb =~ m#bulletin___\d+___adm/wrapper#) {
+ $ressymb=~s#(bulletin___\d+___)#$1adm/wrapper/#;
+ }
+ }
+ if (defined($discussiontime{$ressymb})) {
+ my %contrib = &Apache::lonnet::restore($ressymb,$ENV{'request.course.id'},
+ $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
+ $ENV{'course.'.$ENV{'request.course.id'}.'.num'});
+ if ($contrib{'version'}) {
+ for (my $id=1;$id<=$contrib{'version'};$id++) {
+ unless (($contrib{'hidden'}=~/\.$id\./) || ($contrib{'deleted'}=~/\.$id\./)) {
+ if ($contrib{$id.':subject'}) {
+ $result .= $contrib{$id.':subject'};
+ }
+ if ($contrib{$id.':message'}) {
+ $result .= $contrib{$id.':message'};
+ }
+ if ($contrib{$id,':attachmenturl'}) {
+ if ($contrib{$id,':attachmenturl'} =~ m-/([^/]+)$-) {
+ $result .= $1;
+ }
+ }
+ $applies = &checkwords($result,$applies,@allwords);
+ }
+ }
+ }
+ }
+# Does this discussion apply?
+ if ($applies) {
+ my ($map,$ind,$url)=&Apache::lonnet::decode_symb($ressymb);
+ my $disctype = &mt('resource');
+ if ($url =~ m#/bulletinboard$#) {
+ if ($url =~m#^adm/wrapper/adm/.*/bulletinboard$#) {
+ $url =~s#^adm/wrapper##;
+ }
+ $disctype = &mt('bulletin board');
+ } else {
+ $url = '/res/'.$url;
+ }
+ if ($url =~ /\?/) {
+ $url .= '&symb=';
+ } else {
+ $url .= '?symb=';
+ }
+ $url .= &Apache::lonnet::escape($resource->symb());
+ my $title = $resource->compTitle();
+ $r->print('<br /><a href="'.$url.'" target="cat">'.
+ ($title?$title:$url).'</a> - '.$disctype.'<br />');
+ $totaldiscussions++;
+ } else {
+ $r->print(' .');
+ }
+ }
+ unless ($totaldiscussions) {
+ $r->print('<p>'.&mt('No matches found in postings').'.</p>');
+ }
}
+
+# =================================================== Done going through course
+ $r->print('</body></html>');
+}
+
+# =============================== This pulls up a resource and its dependencies
+
+sub checkonthis {
+ my ($r,$url,$level,$title,$fulltext,@allwords)=@_;
+ $alreadyseen{$url}=1;
+ $r->rflush();
+ my $result=&Apache::lonnet::metadata($url,'title').' '.
+ &Apache::lonnet::metadata($url,'subject').' '.
+ &Apache::lonnet::metadata($url,'abstract').' '.
+ &Apache::lonnet::metadata($url,'keywords');
+ if (($url) && ($fulltext)) {
+ $result.=&Apache::lonnet::ssi_body($url);
+ }
+ $result=~s/\s+/ /gs;
+ my $applies = 0;
+ $applies = &checkwords($result,$applies,@allwords);
+# Does this resource apply?
+ if ($applies) {
+ $r->print('<br />');
+ for (my $i=0;$i<=$level*5;$i++) {
+ $r->print(' ');
+ }
+ $r->print('<a href="'.$url.'" target="cat">'.
+ ($title?$title:$url).'</a><br />');
+ $totalfound++;
+ } elsif ($fulltext) {
+ $r->print(' .');
+ }
+ $r->rflush();
+# Check also the dependencies of this one
+ my $dependencies=
+ &Apache::lonnet::metadata($url,'dependencies');
+ foreach (split(/\,/,$dependencies)) {
+ if (($_=~/^\/res\//) && (!$alreadyseen{$_})) {
+ &checkonthis($r,$_,$level+1,'',$fulltext,@allwords);
+ }
+ }
+}
- %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>;
+sub checkwords {
+ my ($result,$applies,@allwords) = @_;
+ foreach (@allwords) {
+ if ($_=~/\w/) {
+ if ($result=~/$_/si) {
+ $applies++;
+ }
+ }
}
+ return $applies;
+}
- if ($ENV{'form.basicsubmit'} eq 'SEARCH') {
- return &basicsearch($r,$ENV{'form.basicexp'});
+sub untiehash {
+ if (tied(%hash)) {
+ untie(%hash);
}
+}
- $scrout="";
- $scrout.=&searchphrasefield('Limit by title','title',
- '');
+} # End of course search scoping
- $scrout.=&searchphrasefield('Limit by author','author',
- '');
+sub search_html_header {
+ my $Str = <<ENDHEADER;
+<html>
+<head>
+<title>The LearningOnline Network with CAPA</title>
+</head>
+ENDHEADER
+ return $Str;
+}
- $scrout.=&searchphrasefield('Limit by subject','subject',
- '');
+######################################################################
+######################################################################
- $scrout.=&searchphrasefield('Limit by notes','notes',
- '');
+=pod
- $scrout.=&searchphrasefield('Limit by abstract','abstract',
- '');
+=item &print_basic_search_form()
- $scrout.=&selectbox('Limit by MIME type','mime',
- 'notxxx',%mimetag);
+Prints the form for the basic search. Sorry the name is so cryptic.
- $scrout.=&selectbox('Limit by language','language',
- 'any',%language);
-
- $scrout.=<<CREATIONDATEEND;
+=cut
+
+######################################################################
+######################################################################
+sub print_basic_search_form {
+ my ($r,$closebutton,$hidden_fields) = @_;
+ my $result = ($ENV{'form.catalogmode'} ne 'groupsearch');
+ my $bodytag=&Apache::loncommon::bodytag('Search').
+ &Apache::lonhtmlcommon::breadcrumbs(undef,'Searching','Search_Basic',
+ undef,undef,
+ $ENV{'form.catalogmode'} ne 'groupsearch');
+ my $scrout = &search_html_header().$bodytag;
+ if (&Apache::lonnet::allowed('bre',$ENV{'request.role.domain'})) {
+ # Define interface components
+ my $userelatedwords=
+ &mt('[_1] use related words',
+ &Apache::lonhtmlcommon::checkbox
+ ('related',$ENV{'form.related'},'related'));
+ my $onlysearchdomain=
+ &mt('[_1] only search domain [_2]',
+ &Apache::lonhtmlcommon::checkbox('domains',
+ $ENV{'form.domains'},
+ $r->dir_config('lonDefDomain')
+ ),
+ $r->dir_config('lonDefDomain')
+ );
+ my $adv_search_link =
+ '<a href="/adm/searchcat?'.
+ 'phase=disp_adv&'.
+ 'catalogmode='.$ENV{'form.catalogmode'}.
+ '&launch='.$ENV{'form.launch'}.
+ '&mode='.$ENV{'form.mode'}.
+ '">'.&mt('Advanced Search').'</a>';
+ #
+ $scrout.='<form name="loncapa_search" method="post" '.
+ 'action="/adm/searchcat">'.
+ '<input type="hidden" name="phase" value="basic_search" />'.
+ $hidden_fields;
+ #
+ $scrout .= '<center>'.$/;
+ if ($ENV{'request.course.id'}) {
+ $scrout .= '<h1>'.&mt('LON-CAPA Catalog Search').'</h1>';
+ } else {
+ # No need to tell them they are searching
+ $scrout.= ('<br />'x2);
+ }
+ $scrout.='<table>'.
+ '<tr><td align="center" valign="top">'.
+ &Apache::lonhtmlcommon::textbox
+ ('basicexp',
+ &HTML::Entities::encode($ENV{'form.basicexp'},'<>&"'),50
+ ).
+ '<br />'.
+ '<font size="-1">'.&searchhelp().'</font>'.'</td>'.
+ '<td><font size="-1">'.
+ '<nobr>'.(' 'x3).$adv_search_link.'</nobr>'.'<br />'.
+ '<nobr>'.(' 'x1).$userelatedwords.'</nobr>'.'<br />'.
+ '<nobr>'.(' 'x1).$onlysearchdomain.'</nobr>'.'<br />'.
+ '</font></td>'.
+ '</tr>'.$/;
+ #
+ $scrout .= '<tr><td align="center" colspan="2">'.
+ '<font size="-1">'.
+ '<input type="submit" name="basicsubmit" '.
+ 'value="'.&mt('Search').'" />'.
+ (' 'x2).$closebutton.(' 'x2).
+ &viewoptions().
+ '</font>'.
+ '</td></tr>'.$/;
+ $scrout .= '</table>'.$/.'</center>'.'</form>';
+ }
+ if ($ENV{'request.course.id'}) {
+ my %lt=&Apache::lonlocal::texthash('srch' => 'Search',
+ 'header' => 'Course Search',
+ 'note' => 'Enter terms or phrases, then press "Search" below',
+ 'use' => 'use related words',
+ 'full' =>'fulltext search (time consuming)',
+ 'disc' => 'search discussion postings (resources and bulletin boards)',
+ );
+ $scrout.=(<<ENDCOURSESEARCH);
+<form name="loncapa_search" method="post" action="/adm/searchcat">
+<center>
+<hr />
+<h1>$lt{'header'}</h1>
+<input type="hidden" name="phase" value="course_search" />
+$hidden_fields
<p>
-<font color="#800000" face="helvetica"><b>LIMIT BY CREATION DATE RANGE:</b>
-</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>
+$lt{'note'}.
</p>
-CREATIONDATEEND
+<p>
+<table>
+<tr><td>
+ENDCOURSESEARCH
+ $scrout.=' '.
+ &Apache::lonhtmlcommon::textbox('courseexp',
+ $ENV{'form.courseexp'},40);
+ my $crscheckbox =
+ &Apache::lonhtmlcommon::checkbox('crsfulltext',
+ $ENV{'form.crsfulltext'});
+ my $relcheckbox =
+ &Apache::lonhtmlcommon::checkbox('crsrelated',
+ $ENV{'form.crsrelated'});
+ my $discheckbox =
+ &Apache::lonhtmlcommon::checkbox('crsdiscuss',
+ $ENV{'form.crsrelated'});
+ $scrout.=(<<ENDENDCOURSE);
+</td></tr>
+<tr><td>$relcheckbox $lt{'use'}</td><td></td></tr>
+<tr><td>$crscheckbox $lt{'full'}</td><td></td></tr>
+<tr><td>$discheckbox $lt{'disc'}</td><td></td></tr>
+</table><p>
+ <input type="submit" name="coursesubmit" value='$lt{'srch'}' />
+</p>
+</center>
+</form>
+ENDENDCOURSE
+ }
+ $scrout.=(<<ENDDOCUMENT);
+</body>
+</html>
+ENDDOCUMENT
+ $r->print($scrout);
+ return;
+}
+######################################################################
+######################################################################
+
+=pod
- $scrout.=<<LASTREVISIONDATEEND;
+=item &advanced_search_form()
+
+Prints the advanced search form.
+
+=cut
+
+######################################################################
+######################################################################
+sub print_advanced_search_form{
+ my ($r,$closebutton,$hidden_fields) = @_;
+ my $bodytag=&Apache::loncommon::bodytag('Advanced Catalog Search').
+ &Apache::lonhtmlcommon::breadcrumbs(undef,'Searching',
+ 'Search_Advanced',
+ undef,undef,
+ $ENV{'form.catalogmode'} ne 'groupsearch');
+ my %lt=&Apache::lonlocal::texthash('srch' => 'Search',
+ 'reset' => 'Reset',
+ 'help' => 'Help');
+ my $advanced_buttons=<<"END";
+<input type="submit" name="advancedsubmit" value='$lt{"srch"}' />
+<input type="reset" name="reset" value='$lt{"reset"}' />
+$closebutton
+END
+ my $scrout=&search_html_header();
+ $scrout .= <<"ENDHEADER";
+$bodytag
+<form method="post" action="/adm/searchcat" name="advsearch">
<p>
-<font color="#800000" face="helvetica"><b>LIMIT BY LAST REVISION DATE RANGE:
-</b></font>
-<br>between:<select name="lastrevisiondatemonthstart">
-<option value="00"> </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="lastrevisiondatedaystart">
-<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="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>
+$advanced_buttons
+ENDHEADER
+ $scrout.=(' 'x2).&viewoptions().'</p>'.$hidden_fields.
+ '<input type="hidden" name="phase" value="adv_search" />';
+ my %fields=&Apache::lonmeta::fieldnames();
+ #
+ $scrout .= '<h3>'.&mt('Standard Metadata').'</h3>';
+ $scrout .= "<table>\n";
+ $scrout .= '<tr><td> </td><td colspan="2"><font size="-1">'.
+ (' 'x2).&searchhelp()."</font></td></tr>\n";
+ my %related_word_search =
+ ('title' => 1,
+ 'author' => 0,
+ 'owner' => 0,
+ 'authorspace' => 0,
+ 'modifyinguser'=> 0,
+ 'keywords' => 1,
+ 'notes' => 1,
+ 'abstract' => 1,
+ 'standards'=> 1,
+ 'mime' => 1,
+ );
+ #
+ foreach my $field ('title','author','owner','authorspace','modifyinguser',
+ 'keywords','notes','abstract','standards','mime') {
+ $scrout.='<tr><td align="right">'.&titlefield($fields{$field}).'</td><td>'.
+ &Apache::lonmeta::prettyinput($field,
+ $ENV{'form.'.$field},
+ $field,
+ 'advsearch',
+ $related_word_search{$field},
+ '</td><td align="left">',
+ $ENV{'form.'.$field.'_related'},
+ 50);
+ if ($related_word_search{$field}) {
+ $scrout .= 'related words';
+ } else {
+ $scrout .= '</td><td> ';
+ }
+ $scrout .= '</td></tr>'.$/;
+ }
+ foreach my $field ('lowestgradelevel','highestgradelevel') {
+ $scrout.='<tr>'.
+ '<td align="right">'.&titlefield($fields{$field}).'</td>'.
+ '<td colspan="2">'.
+ &Apache::lonmeta::prettyinput($field,
+ $ENV{'form.'.$field},
+ $field,
+ 'advsearch',
+ 0).
+ '</td></tr>'.$/;
+ }
+ $scrout.='<tr><td align="right">'.
+ &titlefield(&mt('MIME Type Category')).'</td><td colspan="2">'.
+ &Apache::loncommon::filecategoryselect('category',
+ $ENV{'form.category'}).
+ '</td></tr>'.$/;
+ $scrout.='<tr><td align="right" valign="top">'.
+ &titlefield(&mt('Domains')).'</td><td colspan="2">'.
+ &Apache::loncommon::domain_select('domains',
+ $ENV{'form.domains'},1).
+ '</td></tr>'.$/;
+ #
+ # Misc metadata
+ $scrout.='<tr><td align="right" valign="top">'.
+ &titlefield(&mt('Copyright/Distribution')).'</td><td colspan="2">'.
+ &Apache::lonmeta::selectbox('copyright',
+ $ENV{'form.copyright'},
+ \&Apache::loncommon::copyrightdescription,
+ ( undef,
+ &Apache::loncommon::copyrightids)
+ ).'</td></tr>'.$/;
+ $scrout.='<tr><td align="right" valign="top">'.
+ &titlefield(&mt('Language')).'</td><td colspan="2">'.
+ &Apache::lonmeta::selectbox('language',
+ $ENV{'form.language'},
+ \&Apache::loncommon::languagedescription,
+ ('any',&Apache::loncommon::languageids)
+ ).'</td></tr>';
+ $scrout .= "</table>\n";
+ #
+ # Dynamic metadata
+ $scrout .= '<h3>'.&mt('Problem Statistics').'</h3>';
+ $scrout .= "<table>\n";
+ $scrout .= '<tr><td> </td><td align="center">'.&mt('Minimum').'</td>'.
+ '<td align="center">'.&mt('Maximum').'</td></tr>'."\n";
+ foreach my $statistic
+ ({ name=>'count',
+ description=>'Network-wide number of accesses (hits)',},
+ { name=>'stdno',
+ description=>
+ 'Total number of students who have worked on this problem',},
+ { name => 'avetries',
+ description=>'Average number of tries till solved',},
+ { name => 'difficulty',
+ description=>'Degree of difficulty',},
+ { name => 'disc',
+ description=>'Degree of discrimination'}) {
+ $scrout .= '<tr><td align="right">'.
+ &titlefield(&mt($statistic->{'description'})).
+ '</td><td align="center">'.
+ '<input type="text" name="'.$statistic->{'name'}.'_min" '.
+ 'value="" size="6" />'.
+ '</td><td align="center">'.
+ '<input type="text" name="'.$statistic->{'name'}.'_max" '.
+ 'value="" size="6" />'.
+ '</td></tr>'.$/;
+ }
+ $scrout .= "</table>\n";
+ $scrout .= '<h3>'.&mt('Evaluation Data').'</h3>';
+ $scrout .= "<table>\n";
+ $scrout .= '<tr><td> </td><td align="center">'.&mt('Minimum').'</td>'.
+ '<td align="center">'.&mt('Maximum').'</td></tr>'."\n";
+ foreach my $evaluation
+ ( { name => 'clear',
+ description => 'Material presented in clear way'},
+ { name =>'depth',
+ description => 'Material covered with sufficient depth'},
+ { name => 'helpful',
+ description => 'Material is helpful'},
+ { name => 'correct',
+ description => 'Material appears to be correct'},
+ { name => 'technical',
+ description => 'Resource is technically correct'}){
+ $scrout .= '<tr><td align="right">'.
+ &titlefield(&mt($evaluation->{'description'})).
+ '</td><td align="center">'.
+ '<input type="text" name="'.$evaluation->{'name'}.'_min" '.
+ 'value="" size="6" />'.
+ '</td><td align="center">'.
+ '<input type="text" name="'.$evaluation->{'name'}.'_max" '.
+ 'value="" size="6" />'.
+ '</td></tr>'.$/;
+ }
+ $scrout .= "</table>\n";
+ #
+ # Creation/Modification date limits
+ $scrout .= '<h3>'.&mt('Creation and Modification dates').'</h3>';
+ $scrout .= "\n<table>\n";
+ my $cafter =
+ &Apache::lonhtmlcommon::date_setter('advsearch', # formname
+ 'creationdate1', # fieldname
+ 0, # current value
+ '', # special
+ 1, # includeempty
+ '', # state
+ 1, # no_hh_mm_ss
+ );
+ my $cbefore =
+ &Apache::lonhtmlcommon::date_setter('advsearch', # formname
+ 'creationdate2', # fieldname
+ 0, # current value
+ '', # special
+ 1, # includeempty
+ '', # state
+ 1, # no_hh_mm_ss
+ );
+ $scrout .= &mt('<tr><td align="right">Created between</td>'.
+ '<td>[_1]</td></tr>'.
+ '<tr><td align="right">and </td>'.
+ '<td>[_2]</td></tr>',$cafter,$cbefore);
+ my $lafter =
+ &Apache::lonhtmlcommon::date_setter('advsearch',
+ 'revisiondate1',
+ 0, # current value
+ '', # special
+ 1, # includeempty
+ '', # state
+ 1, # no_hh_mm_ss
+ );
+ my $lbefore =
+ &Apache::lonhtmlcommon::date_setter('advsearch',
+ 'revisiondate2',
+ 0, # current value
+ '', # special
+ 1, # includeempty
+ '', # state
+ 1, # no_hh_mm_ss
+ );
+ $scrout .= &mt('<tr><td align="right">Last modified between </td>'.
+ '<td>[_1]</td></tr>'.
+ '<tr><td align="right">and</td>'.
+ '<td>[_2]</td></tr>',$lafter,$lbefore);
+ $scrout.="</table>\n";
+ $scrout.=<<ENDDOCUMENT;
+$advanced_buttons
+</form>
+</body>
+</html>
+ENDDOCUMENT
+ $r->print($scrout);
+ return;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &titlefield()
+
+Inputs: title text
+
+Outputs: titletext with font wrapper
+
+=cut
+
+######################################################################
+######################################################################
+sub titlefield {
+ my $title=shift;
+ return $title;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item viewoptiontext()
+
+Inputs: codename for view option
+
+Outputs: displayed text
+
+=cut
+
+######################################################################
+######################################################################
+sub viewoptiontext {
+ my $code=shift;
+ my %desc=&Apache::lonlocal::texthash
+ ('detailed' => "Detailed Citation View",
+ 'xml' => 'XML/SGML',
+ 'compact' => 'Compact View',
+ 'fielded' => 'Fielded Format',
+ 'summary' => 'Summary View');
+ return $desc{$code};
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item viewoptions()
+
+Inputs: none
+
+Outputs: text for box with view options
+
+=cut
+
+######################################################################
+######################################################################
+sub viewoptions {
+ my $scrout;
+ if (! defined($ENV{'form.viewselect'})) {
+ $ENV{'form.viewselect'}='detailed';
+ }
+ $scrout.=&Apache::lonmeta::selectbox('viewselect',
+ $ENV{'form.viewselect'},
+ \&viewoptiontext,
+ sort(keys(%Views)));
+ $scrout.= ' ';
+ my $countselect = &Apache::lonmeta::selectbox('show',
+ $ENV{'form.show'},
+ undef,
+ (10,20,50,100,1000,10000));
+ $scrout .= (' 'x2).&mt('[_1] Records per Page',$countselect).
+ '</nobr>'.$/;
+ return $scrout;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item searchhelp()
+
+Inputs: none
+
+Outputs: return little blurb on how to enter searches
+
+=cut
+
+######################################################################
+######################################################################
+sub searchhelp {
+ return &mt('Enter words and quoted phrases');
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &get_persistent_form_data()
+
+Inputs: filename of database
+
+Outputs: returns undef on database errors.
+
+This function is the reverse of &make_persistent() for form data.
+Retrieve persistent data from %persistent_db. Retrieved items will have their
+values unescaped. If a form value already exists in $ENV, it will not be
+overwritten. Form values that are array references may have values appended
+to them.
+
+=cut
+
+######################################################################
+######################################################################
+sub get_persistent_form_data {
+ my $filename = shift;
+ return 0 if (! -e $filename);
+ return undef if (! tie(%persistent_db,'GDBM_File',$filename,
+ &GDBM_READER(),0640));
+ #
+ # These make sure we do not get array references printed out as 'values'.
+ my %arrays_allowed = ('form.domains'=>1);
+ #
+ # Loop through the keys, looking for 'form.'
+ foreach my $name (keys(%persistent_db)) {
+ next if ($name !~ /^form./);
+ # Kludgification begins!
+ if ($name eq 'form.domains' &&
+ $ENV{'form.searchmode'} eq 'basic' &&
+ $ENV{'form.phase'} ne 'disp_basic') {
+ next;
+ }
+ # End kludge (hopefully)
+ next if (exists($ENV{$name}));
+ my @values = map {
+ &Apache::lonnet::unescape($_);
+ } split(',',$persistent_db{$name});
+ next if (@values <1);
+ if ($arrays_allowed{$name}) {
+ $ENV{$name} = [@values];
+ } else {
+ $ENV{$name} = $values[0] if ($values[0]);
+ }
+ }
+ untie (%persistent_db);
+ return 1;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &get_persistent_data()
+
+Inputs: filename of database, ref to array of values to recover.
+
+Outputs: array of values. Returns undef on error.
+
+This function is the reverse of &make_persistent();
+Retrieve persistent data from %persistent_db. Retrieved items will have their
+values unescaped. If the item contains commas (before unescaping), the
+returned value will be an array pointer.
+
+=cut
+
+######################################################################
+######################################################################
+sub get_persistent_data {
+ my $filename = shift;
+ my @Vars = @{shift()};
+ my @Values; # Return array
+ return undef if (! -e $filename);
+ return undef if (! tie(%persistent_db,'GDBM_File',$filename,
+ &GDBM_READER(),0640));
+ foreach my $name (@Vars) {
+ if (! exists($persistent_db{$name})) {
+ push @Values, undef;
+ next;
+ }
+ my @values = map {
+ &Apache::lonnet::unescape($_);
+ } split(',',$persistent_db{$name});
+ if (@values <= 1) {
+ push @Values,$values[0];
+ } else {
+ push @Values,\@values;
+ }
+ }
+ untie (%persistent_db);
+ return @Values;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &make_persistent()
+
+Inputs: Hash of values to save, filename of persistent database.
+
+Store variables away to the %persistent_db.
+Values will be escaped. Values that are array pointers will have their
+elements escaped and concatenated in a comma separated string.
+
+=cut
+
+######################################################################
+######################################################################
+sub make_persistent {
+ my %save = %{shift()};
+ my $filename = shift;
+ return undef if (! tie(%persistent_db,'GDBM_File',
+ $filename,&GDBM_WRCREAT(),0640));
+ foreach my $name (keys(%save)) {
+ my @values = (ref($save{$name}) ? @{$save{$name}} : ($save{$name}));
+ # We handle array references, but not recursively.
+ my $store = join(',', map { &Apache::lonnet::escape($_); } @values );
+ $persistent_db{$name} = $store;
+ }
+ untie(%persistent_db);
+ return 1;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &make_form_data_persistent()
+
+Inputs: filename of persistent database.
+
+Store most form variables away to the %persistent_db.
+Values will be escaped. Values that are array pointers will have their
+elements escaped and concatenated in a comma separated string.
+
+=cut
+
+######################################################################
+######################################################################
+sub make_form_data_persistent {
+ my $r = shift;
+ my $filename = shift;
+ my %save;
+ foreach (keys(%ENV)) {
+ next if (!/^form/ || /submit/);
+ $save{$_} = $ENV{$_};
+ }
+ return &make_persistent(\%save,$filename);
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &parse_advanced_search()
+
+Parse advanced search form and return the following:
+
+=over 4
+
+=item $query Scalar containing an SQL query.
+
+=item $customquery Scalar containing a custom query.
+
+=item $customshow Scalar containing commands to show custom metadata.
+
+=item $libraries_to_query Reference to array of domains to search.
+
+=back
+
+=cut
+
+######################################################################
+######################################################################
+sub parse_advanced_search {
+ my ($r,$closebutton,$hidden_fields)=@_;
+ my @BasicFields = ('title','author','subject','keywords','url','version',
+ 'notes','abstract','extension','owner','authorspace',
+# 'custommetadata','customshow',
+ 'modifyinguser','standards','mime');
+ my @StatsFields = &statfields();
+ my @EvalFields = &evalfields();
+ my $fillflag=0;
+ my $pretty_search_string = "";
+ # Clean up fields for safety
+ for my $field (@BasicFields,
+ 'creationdatestart_month','creationdatestart_day',
+ 'creationdatestart_year','creationdateend_month',
+ 'creationdateend_day','creationdateend_year',
+ 'lastrevisiondatestart_month','lastrevisiondatestart_day',
+ 'lastrevisiondatestart_year','lastrevisiondateend_month',
+ 'lastrevisiondateend_day','lastrevisiondateend_year') {
+ $ENV{'form.'.$field}=~s/[^\w\/\s\(\)\=\-\"\']//g;
+ }
+ foreach ('mode','form','element') {
+ # is this required? Hmmm.
+ next if (! exists($ENV{'form.'.$_}));
+ $ENV{'form.'.$_}=&Apache::lonnet::unescape($ENV{'form.'.$_});
+ $ENV{'form.'.$_}=~s/[^\w\/\s\(\)\=\-\"\']//g;
+ }
+ # Preprocess the category form element.
+ $ENV{'form.category'} = 'any' if (! defined($ENV{'form.category'}) ||
+ ref($ENV{'form.category'}));
+ #
+ # Check to see if enough information was filled in
+ foreach my $field (@BasicFields) {
+ if (&filled($ENV{'form.'.$field})) {
+ $fillflag++;
+ }
+ }
+ foreach my $field (@StatsFields,@EvalFields) {
+ if (&filled($ENV{'form.'.$field.'_max'})) {
+ $fillflag++;
+ }
+ if (&filled($ENV{'form.'.$field.'_min'})) {
+ $fillflag++;
+ }
+ }
+
+ for my $field ('lowestgradelevel','highestgradelevel') {
+ if ( $ENV{'form.'.$field} =~ /^\d+$/ &&
+ $ENV{'form.'.$field} > 0) {
+ $fillflag++;
+ }
+ }
+ if (! $fillflag) {
+ &output_blank_field_error($r,$closebutton,
+ 'phase=disp_adv',$hidden_fields);
+ return ;
+ }
+ # Turn the form input into a SQL-based query
+ my $query='';
+ my @queries;
+ my $font = '<font color="#800000" face="helvetica">';
+ # Evaluate logical expression AND/OR/NOT phrase fields.
+ foreach my $field (@BasicFields) {
+ next if (!defined($ENV{'form.'.$field}) || $ENV{'form.'.$field} eq '');
+ my ($error,$SQLQuery) =
+ &process_phrase_input($ENV{'form.'.$field},
+ $ENV{'form.'.$field.'_related'},$field);
+ if (defined($error)) {
+ &output_unparsed_phrase_error($r,$closebutton,'phase=disp_adv',
+ $hidden_fields,$field);
+ return;
+ } else {
+ $pretty_search_string .=
+ $font.$field.'</font>: '.$ENV{'form.'.$field};
+ if ($ENV{'form.'.$field.'_related'}) {
+ my @Words =
+ &Apache::loncommon::get_related_words
+ ($ENV{'form.'.$field});
+ if (@Words) {
+ $pretty_search_string.= ' with related words: '.
+ join(', ',@Words[0..4]);
+ } else {
+ $pretty_search_string.= ' with related words.';
+ }
+ }
+ $pretty_search_string .= '<br />';
+ push (@queries,$SQLQuery);
+ }
+ }
+ #
+ # Make the 'mime' from 'form.category' and 'form.extension'
+ #
+ my $searchphrase;
+ if (exists($ENV{'form.category'}) &&
+ $ENV{'form.category'} !~ /^\s*$/ &&
+ $ENV{'form.category'} ne 'any') {
+ my @extensions = &Apache::loncommon::filecategorytypes
+ ($ENV{'form.category'});
+ if (scalar(@extensions) > 0) {
+ $searchphrase = join(' OR ',@extensions);
+ }
+ }
+ if (defined($searchphrase)) {
+ my ($error,$SQLsearch) = &process_phrase_input($searchphrase,0,'mime');
+ push @queries,$SQLsearch;
+ $pretty_search_string .=$font.'mime</font> contains <b>'.
+ $searchphrase.'</b><br />';
+ }
+ #
+ # Evaluate option lists
+ if ($ENV{'form.lowestgradelevel'} &&
+ $ENV{'form.lowestgradelevel'} ne '0' &&
+ $ENV{'form.lowestgradelevel'} =~ /^\d+$/) {
+ push(@queries,
+ '(lowestgradelevel>='.$ENV{'form.lowestgradelevel'}.')');
+ $pretty_search_string.="lowestgradelevel>=".
+ $ENV{'form.lowestgradelevel'}."<br />\n";
+ }
+ if ($ENV{'form.highestgradelevel'} &&
+ $ENV{'form.highestgradelevel'} ne '0' &&
+ $ENV{'form.highestgradelevel'} =~ /^\d+$/) {
+ push(@queries,
+ '(highestgradelevel<='.$ENV{'form.highestgradelevel'}.')');
+ $pretty_search_string.="highestgradelevel<=".
+ $ENV{'form.highestgradelevel'}."<br />\n";
+ }
+ if ($ENV{'form.language'} and $ENV{'form.language'} ne 'any') {
+ push @queries,"(language like \"$ENV{'form.language'}\")";
+ $pretty_search_string.=$font."language</font>= ".
+ &Apache::loncommon::languagedescription($ENV{'form.language'}).
+ "<br />\n";
+ }
+ if ($ENV{'form.copyright'} and $ENV{'form.copyright'} ne 'any') {
+ push @queries,"(copyright like \"$ENV{'form.copyright'}\")";
+ $pretty_search_string.=$font."copyright</font> = ".
+ &Apache::loncommon::copyrightdescription($ENV{'form.copyright'}).
+ "<br />\n";
+ }
+ #
+ # Statistics
+ foreach my $field (@StatsFields,@EvalFields) {
+ my ($min,$max);
+ if (exists($ENV{'form.'.$field.'_min'}) &&
+ $ENV{'form.'.$field.'_min'} ne '') {
+ $min = $ENV{'form.'.$field.'_min'};
+ }
+ if (exists($ENV{'form.'.$field.'_max'}) &&
+ $ENV{'form.'.$field.'_max'} ne '') {
+ $max = $ENV{'form.'.$field.'_max'};
+ }
+ next if (! defined($max) && ! defined($min));
+ if (defined($min) && defined($max)) {
+ ($min,$max) = sort {$a <=>$b} ($min,$max);
+ }
+ if (defined($min) && $min =~ /^(\d+\.\d+|\d+|\.\d+)$/) {
+ push(@queries,'('.$field.'>'.$min.')');
+ $pretty_search_string.=$font.$field.'</font>>'.$min.'<br />';
+ }
+ if (defined($max) && $max =~ /^(\d+\.\d+|\d+|\.\d+)$/) {
+ push(@queries,'('.$field.'<'.$max.')');
+ $pretty_search_string.=$font.$field.'</font><'.$max.'<br />';
+ }
+ }
+ #
+ # Evaluate date windows
+ my $cafter =
+ &Apache::lonhtmlcommon::get_date_from_form('creationdate1');
+ my $cbefore =
+ &Apache::lonhtmlcommon::get_date_from_form('creationdate2');
+ if ($cafter > $cbefore) {
+ my $tmp = $cafter;
+ $cafter = $cbefore;
+ $cbefore = $tmp;
+ }
+ my $mafter =
+ &Apache::lonhtmlcommon::get_date_from_form('revisiondate1');
+ my $mbefore =
+ &Apache::lonhtmlcommon::get_date_from_form('revisiondate2');
+ if ($mafter > $mbefore) {
+ my $tmp = $mafter;
+ $mafter = $mbefore;
+ $mbefore = $tmp;
+ }
+ my ($datequery,$error,$prettydate)=&build_date_queries($cafter,$cbefore,
+ $mafter,$mbefore);
+ if (defined($error)) {
+ &output_date_error($r,$error,$closebutton,$hidden_fields);
+ } elsif (defined($datequery)) {
+ # Here is where you would set up pretty_search_string to output
+ # date query information.
+ $pretty_search_string .= '<br />'.$prettydate.'<br />';
+ push @queries,$datequery;
+ }
+ #
+ # Process form information for custom metadata querying
+ my $customquery=undef;
+ ##
+ ## The custom metadata search was removed q long time ago mostly
+ ## because I was unable to figureout exactly how it worked and could
+ ## not imagine people actually using it. MH
+ ##
+ # if ($ENV{'form.custommetadata'}) {
+ # $pretty_search_string .=$font."Custom Metadata Search</font>: <b>".
+ # $ENV{'form.custommetadata'}."</b><br />\n";
+ # $customquery=&build_custommetadata_query('custommetadata',
+ # $ENV{'form.custommetadata'});
+ # }
+ my $customshow=undef;
+ # if ($ENV{'form.customshow'}) {
+ # $pretty_search_string .=$font."Custom Metadata Display</font>: <b>".
+ # $ENV{'form.customshow'}."</b><br />\n";
+ # $customshow=$ENV{'form.customshow'};
+ # $customshow=~s/[^\w\s]//g;
+ # my @fields=split(/\s+/,$customshow);
+ # $customshow=join(" ",@fields);
+ # }
+ ##
+ ## Deal with restrictions to given domains
+ ##
+ my ($libraries_to_query,$pretty_domains_string) =
+ &parse_domain_restrictions();
+ $pretty_search_string .= $pretty_domains_string."<br />\n";
+ #
+ if (@queries) {
+ $query="SELECT * FROM metadata WHERE (".join(") AND (",@queries).')';
+ } elsif ($customquery) {
+ $query = '';
+ }
+ # &Apache::lonnet::logthis('query = '.$/.$query);
+ return ($query,$customquery,$customshow,$libraries_to_query,
+ $pretty_search_string);
+}
+
+sub parse_domain_restrictions {
+ my $libraries_to_query = undef;
+ # $ENV{'form.domains'} can be either a scalar or an array reference.
+ # We need an array.
+ if (! exists($ENV{'form.domains'}) || $ENV{'form.domains'} eq '') {
+ return (undef,'');
+ }
+ my @allowed_domains;
+ if (ref($ENV{'form.domains'})) {
+ @allowed_domains = @{$ENV{'form.domains'}};
+ } else {
+ @allowed_domains = ($ENV{'form.domains'});
+ }
+ #
+ my %domain_hash = ();
+ my $pretty_domains_string;
+ foreach (@allowed_domains) {
+ $domain_hash{$_}++;
+ }
+ if ($domain_hash{'any'}) {
+ $pretty_domains_string = "In all LON-CAPA domains.";
+ } else {
+ if (@allowed_domains > 1) {
+ $pretty_domains_string = "In LON-CAPA domains:";
+ } else {
+ $pretty_domains_string = "In LON-CAPA domain ";
+ }
+ foreach (sort @allowed_domains) {
+ $pretty_domains_string .= "<b>".$_."</b> ";
+ }
+ foreach (keys(%Apache::lonnet::libserv)) {
+ if (exists($domain_hash{$Apache::lonnet::hostdom{$_}})) {
+ push @$libraries_to_query,$_;
+ }
+ }
+ }
+ return ($libraries_to_query,$pretty_domains_string);
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &parse_basic_search()
+
+Parse the basic search form and return a scalar containing an sql query.
+
+=cut
+
+######################################################################
+######################################################################
+sub parse_basic_search {
+ my ($r,$closebutton)=@_;
+ #
+ # 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 ($libraries_to_query,$pretty_domains_string) =
+ &parse_domain_restrictions();
+ #
+ # Check to see if enough of a query is filled in
+ my $search_string = $ENV{'form.basicexp'};
+ if (! &filled($search_string)) {
+ &output_blank_field_error($r,$closebutton,'phase=disp_basic');
+ return OK;
+ }
+ my $pretty_search_string=$search_string;
+ my @Queries;
+ my $searchfield = 'concat_ws(" ",'.join(',',
+ ('title','author','subject',
+ 'notes','abstract','keywords')
+ ).')';
+ my ($error,$SQLQuery) = &process_phrase_input($search_string,
+ $ENV{'form.related'},
+ $searchfield);
+ if ($error) {
+ &output_unparsed_phrase_error($r,$closebutton,'phase=disp_basic',
+ '','basicexp');
+ return;
+ }
+ push(@Queries,$SQLQuery);
+ #foreach my $q (@Queries) {
+ # &Apache::lonnet::logthis(' '.$q);
+ #}
+ my $final_query = 'SELECT * FROM metadata WHERE '.join(" AND ",@Queries);
+ #
+ if (defined($pretty_domains_string) && $pretty_domains_string ne '') {
+ $pretty_search_string .= ' '.$pretty_domains_string;
+ }
+ $pretty_search_string .= "<br />\n";
+ $pretty_search_string =~ s:^<br /> and ::;
+ # &Apache::lonnet::logthis($final_query);
+ return ($final_query,$pretty_search_string,
+ $libraries_to_query);
+}
+
+
+###############################################################
+###############################################################
+
+my @Phrases;
+
+sub concat {
+ my ($item) = @_;
+ my $results = '';
+ foreach (@$item) {
+ if (ref($_) eq 'ARRAY') {
+ $results .= join(' ',@$_);
+ }
+ }
+ return $results;
+}
+
+sub process_phrase_input {
+ my ($phrase,$related,$field)=@_;
+ #&Apache::lonnet::logthis('phrase = :'.$phrase.':');
+ my $grammar = <<'ENDGRAMMAR';
+ searchphrase:
+ expression /^\Z/ {
+ # &Apache::lonsearchcat::print_item(\@item,0);
+ [@item];
+ }
+ expression:
+ phrase(s) {
+ [@item];
+ }
+ phrase:
+ orword {
+ [@item];
+ }
+ | andword {
+ [@item];
+ }
+ | minusword {
+ unshift(@::Phrases,$item[1]->[0]);
+ unshift(@::Phrases,$item[1]->[1]);
+ [@item];
+ }
+ | word {
+ unshift(@::Phrases,$item[1]);
+ [@item];
+ }
+ #
+ orword:
+ word 'OR' phrase {
+ unshift(@::Phrases,'OR');
+ unshift(@::Phrases,$item[1]);
+ [@item];
+ }
+ | word 'or' phrase {
+ unshift(@::Phrases,'OR');
+ unshift(@::Phrases,$item[1]);
+ [@item];
+ }
+ | minusword 'OR' phrase {
+ unshift(@::Phrases,'OR');
+ unshift(@::Phrases,$item[1]->[0]);
+ unshift(@::Phrases,$item[1]->[1]);
+ [@item];
+ }
+ | minusword 'or' phrase {
+ unshift(@::Phrases,'OR');
+ unshift(@::Phrases,$item[1]->[0]);
+ unshift(@::Phrases,$item[1]->[1]);
+ [@item];
+ }
+ andword:
+ word phrase {
+ unshift(@::Phrases,'AND');
+ unshift(@::Phrases,$item[1]);
+ [@item];
+ }
+ | minusword phrase {
+ unshift(@::Phrases,'AND');
+ unshift(@::Phrases,$item[1]->[0]);
+ unshift(@::Phrases,$item[1]->[1]);
+ [@item];
+ }
+ #
+ minusword:
+ '-' word {
+ [$item[2],'NOT'];
+ }
+ word:
+ "'" term(s) "'" {
+ &Apache::lonsearchcat::concat(\@item);
+ }
+ | '"' term(s) '"' {
+ &Apache::lonsearchcat::concat(\@item);
+ }
+ | term {
+ $item[1];
+ }
+ term:
+ /[\w\Q:!@#$%^&*()+_=|{}<>,.;\\\/?\E]+/ {
+ $item[1];
+ }
+ENDGRAMMAR
+ #
+ # The end result of parsing the phrase with the grammar is an array
+ # @::Phrases.
+ # $phrase = "gene splicing" or cat -> "gene splicing","OR","cat"
+ # $phrase = "genetic engineering" -dna ->
+ # "genetic engineering","AND","NOT","dna"
+ # $phrase = cat or dog -poodle -> "cat","OR","dog","AND","NOT","poodle"
+ undef(@::Phrases);
+ my $p = new Parse::RecDescent($grammar);
+ if (! defined($p->searchphrase($phrase))) {
+ &Apache::lonnet::logthis('lonsearchcat:unable to process:'.$phrase);
+ return 'Unable to process phrase '.$phrase;
+ }
+ #
+ # Go through the phrases and make sense of them.
+ # Apply modifiers NOT OR and AND to the phrases.
+ my @NewPhrases;
+ while(@::Phrases) {
+ my $phrase = shift(@::Phrases);
+ # &Apache::lonnet::logthis('phrase = '.$phrase);
+ my $phrasedata;
+ if ($phrase =~ /^(NOT|OR|AND)$/) {
+ if ($phrase eq 'OR') {
+ $phrasedata->{'or'}++;
+ if (! @::Phrases) { $phrasedata = undef; last; }
+ $phrase = shift(@::Phrases);
+ } elsif ($phrase eq 'AND') {
+ $phrasedata->{'and'}++;
+ if (! @::Phrases) { $phrasedata = undef; last; }
+ $phrase = shift(@::Phrases);
+ }
+ if ($phrase eq 'NOT') {
+ $phrasedata->{'negate'}++;
+ if (! @::Phrases) { $phrasedata = undef; last; }
+ $phrase = shift(@::Phrases);
+ }
+ }
+ $phrasedata->{'phrase'} = $phrase;
+ if ($related) {
+ my @NewWords;
+ (undef,@NewWords) = &related_version($phrasedata->{'phrase'});
+ $phrasedata->{'related_words'} = \@NewWords;
+ }
+ push(@NewPhrases,$phrasedata);
+ }
+ #
+ # Actually build the sql query from the phrases
+ my $SQLQuery;
+ foreach my $phrase (@NewPhrases) {
+ my $query;
+ if ($phrase->{'negate'}) {
+ $query .= $field.' NOT LIKE "%'.$phrase->{'phrase'}.'%"';
+ } else {
+ $query .= $field.' LIKE "%'.$phrase->{'phrase'}.'%"';
+ }
+ foreach my $related (@{$phrase->{'related_words'}}) {
+ if ($phrase->{'negate'}) {
+ $query .= ' AND '.$field.' NOT LIKE "%'.$related.'%"';
+ } else {
+ $query .= ' OR '.$field.' LIKE "%'.$related.'%"';
+ }
+ }
+ if ($SQLQuery) {
+ if ($phrase->{'or'}) {
+ $SQLQuery .= ' OR ('.$query.')';
+ } else {
+ $SQLQuery .= ' AND ('.$query.')';
+ }
+ } else {
+ $SQLQuery = '('.$query.')';
+ }
+ }
+ #
+ # &Apache::lonnet::logthis("SQLQuery = $SQLQuery");
+ #
+ return undef,$SQLQuery;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &related_version()
+
+Modifies an input string to include related words. Words in the string
+are replaced with parenthesized lists of 'OR'd words. For example
+"torque" is replaced with "(torque OR word1 OR word2 OR ...)".
+
+Note: Using this twice on a string is probably silly.
+
+=cut
+
+######################################################################
+######################################################################
+sub related_version {
+ my ($word) = @_;
+ return (undef) if (lc($word) =~ /\b(or|and|not)\b/);
+ my @Words = &Apache::loncommon::get_related_words($word);
+ # Only use 4 related words
+ @Words = ($#Words>4? @Words[0..4] : @Words);
+ my $result = join " OR ", ($word,@Words);
+ return $result,sort(@Words);
+}
+
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &build_custommetadata_query()
+
+Constructs a custom metadata query using a rather heinous regular
+expression.
+
+=cut
+
+######################################################################
+######################################################################
+sub build_custommetadata_query {
+ my ($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 $matchexp;
+}
+
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &build_date_queries()
+
+Builds a SQL logic query to check time/date entries.
+Also reports errors (check for /^Incorrect/).
+
+=cut
+
+######################################################################
+######################################################################
+sub build_date_queries {
+ my ($cafter,$cbefore,$mafter,$mbefore) = @_;
+ my ($result,$error,$pretty_string);
+ #
+ # Verify the input
+ if (! defined($cafter) && ! defined($cbefore) &&
+ ! defined($mafter) && ! defined($mbefore)) {
+ # This is an okay situation, so return undef for the error
+ return (undef,undef,undef);
+ }
+ if ((defined($cafter) && ! defined($cbefore)) ||
+ (defined($cbefore) && ! defined($cafter))) {
+ # This is bad, so let them know
+ $error = &mt('Incorrect entry for the creation date. '.
+ 'You must specify both the beginning and ending dates.');
+ }
+ if (! defined($error) &&
+ ((defined($mafter) && ! defined($mbefore)) ||
+ (defined($mbefore) && ! defined($mafter)))) {
+ # This is also bad, so let them know
+ $error = &mt('Incorrect entry for the last revision date. '.
+ 'You must specify both the beginning and ending dates.');
+ }
+ if (! defined($error)) {
+ #
+ # Build the queries
+ my @queries;
+ if (defined($cbefore) && defined($cafter)) {
+ my (undef,undef,undef,$caday,$camon,$cayear) = localtime($cafter);
+ my (undef,undef,undef,$cbday,$cbmon,$cbyear) = localtime($cbefore);
+ # Correct for year being relative to 1900
+ $cayear+=1900; $cbyear+=1900;
+ my $cquery=
+ '(creationdate BETWEEN '.
+ "'".$cayear.'-'.$camon.'-'.$caday."'".
+ ' AND '.
+ "'".$cbyear.'-'.$cbmon.'-'.$cbday." 23:59:59')";
+ $pretty_string .= '<br />' if (defined($pretty_string));
+ $pretty_string .=
+ &mt('created between [_1] and [_2]',
+ &Apache::lonlocal::locallocaltime($cafter),
+ &Apache::lonlocal::locallocaltime($cbefore+24*60*60-1));
+ push(@queries,$cquery);
+ $pretty_string =~ s/ 00:00:00//g;
+ }
+ if (defined($mbefore) && defined($mafter)) {
+ my (undef,undef,undef,$maday,$mamon,$mayear) = localtime($mafter);
+ my (undef,undef,undef,$mbday,$mbmon,$mbyear) = localtime($mbefore);
+ # Correct for year being relative to 1900
+ $mayear+=1900; $mbyear+=1900;
+ my $mquery=
+ '(lastrevisiondate BETWEEN '.
+ "'".$mayear.'-'.$mamon.'-'.$maday."'".
+ ' AND '.
+ "'".$mbyear.'-'.$mbmon.'-'.$mbday." 23:59:59')";
+ push(@queries,$mquery);
+ $pretty_string .= '<br />' if (defined($pretty_string));
+ $pretty_string .=
+ &mt('last revised between [_1] and [_2]',
+ &Apache::lonlocal::locallocaltime($mafter),
+ &Apache::lonlocal::locallocaltime($mbefore+24*60*60-1));
+ $pretty_string =~ s/ 00:00:00//g;
+ }
+ if (@queries) {
+ $result .= join(" AND ",@queries);
+ }
+ }
+ return ($result,$error,$pretty_string);
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item ©right_check()
+
+Inputs: $Metadata, a hash pointer of metadata for a resource.
+
+Returns: 1 if the resource is available to the user making the query,
+ 0 otherwise.
+
+=cut
+
+######################################################################
+######################################################################
+sub copyright_check {
+ my $Metadata = shift;
+ # Check copyright tags and skip results the user cannot use
+ my (undef,undef,$resdom,$resname) = split('/',
+ $Metadata->{'url'});
+ # Check for priv
+ if (($Metadata->{'copyright'} eq 'priv') &&
+ (($ENV{'user.name'} ne $resname) &&
+ ($ENV{'user.domain'} ne $resdom))) {
+ return 0;
+ }
+ # Check for domain
+ if (($Metadata->{'copyright'} eq 'domain') &&
+ ($ENV{'user.domain'} ne $resdom)) {
+ return 0;
+ }
+ return 1;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &ensure_db_and_table()
+
+Ensure we can get lonmysql to connect to the database and the table we
+need exists.
+
+Inputs: $r, table id
+
+Returns: undef on error, 1 if the table exists.
+
+=cut
+
+######################################################################
+######################################################################
+sub ensure_db_and_table {
+ my ($r,$table) = @_;
+ ##
+ ## Sanity check the table id.
+ ##
+ if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
+ $r->print("Unable to retrieve search results. ".
+ "Unable to determine the table results were stored in. ".
+ "</body></html>");
+ return undef;
+ }
+ ##
+ ## Make sure we can connect and the table exists.
+ ##
+ my $connection_result = &Apache::lonmysql::connect_to_db();
+ if (!defined($connection_result)) {
+ $r->print("Unable to connect to the MySQL database where your results".
+ " are stored. </body></html>");
+ &Apache::lonnet::logthis("lonsearchcat: unable to get lonmysql to".
+ " connect to database.");
+ &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
+ return undef;
+ }
+ my $table_check = &Apache::lonmysql::check_table($table);
+ if (! defined($table_check)) {
+ $r->print("A MySQL error has occurred.</form></body></html>");
+ &Apache::lonnet::logthis("lonmysql was unable to determine the status".
+ " of table ".$table);
+ return undef;
+ } elsif (! $table_check) {
+ $r->print("The table of results could not be found.");
+ &Apache::lonnet::logthis("The user requested a table, ".$table.
+ ", that could not be found.");
+ return undef;
+ }
+ return 1;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &print_sort_form()
+
+The sort feature is not implemented at this time. This form just prints
+a link to change the search query.
+
+=cut
+
+######################################################################
+######################################################################
+sub print_sort_form {
+ my ($r,$pretty_query_string) = @_;
+ my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1).
+ &Apache::lonhtmlcommon::breadcrumbs
+ (undef,'Searching','Searching',undef,undef,
+ $ENV{'form.catalogmode'} ne 'groupsearch');
+
+ ##
+ my %SortableFields=&Apache::lonlocal::texthash(
+ id => 'Default',
+ title => 'Title',
+ author => 'Author',
+ subject => 'Subject',
+ url => 'URL',
+ version => 'Version Number',
+ mime => 'Mime type',
+ lang => 'Language',
+ owner => 'Owner/Publisher',
+ copyright => 'Copyright',
+ hostname => 'Host',
+ creationdate => 'Creation Date',
+ lastrevisiondate => 'Revision Date'
+ );
+ ##
+ my $table = $ENV{'form.table'};
+ return if (! &ensure_db_and_table($r,$table));
+ ##
+ ## Get the number of results
+ ##
+ my $total_results = &Apache::lonmysql::number_of_rows($table);
+ if (! defined($total_results)) {
+ $r->print("A MySQL error has occurred.</form></body></html>");
+ &Apache::lonnet::logthis("lonmysql was unable to determine the number".
+ " of rows in table ".$table);
+ &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
+ return;
+ }
+ my $result;
+ $result.=<<END;
+<html>
+<head>
+<script>
+ function change_sort() {
+ var newloc = "/adm/searchcat?phase=results";
+ newloc += "&persistent_db_id=$ENV{'form.persistent_db_id'}";
+ newloc += "&sortby=";
+ newloc += document.forms.statusform.elements.sortby.value;
+ parent.resultsframe.location= newloc;
+ }
+</script>
+<title>Results</title>
+</head>
+$bodytag
+<form name="statusform" action="" method="post">
+<input type="hidden" name="Queue" value="" />
+END
+
+#<h2>Sort Results</h2>
+#Sort by: <select size="1" name="sortby" onchange="javascript:change_sort();">
+# $ENV{'form.sortby'} = 'id' if (! defined($ENV{'form.sortby'}));
+# foreach (keys(%SortableFields)) {
+# $result.="<option name=\"$_\"";
+# if ($_ eq $ENV{'form.sortby'}) {
+# $result.=" selected ";
+# }
+# $result.=" >$SortableFields{$_}</option>\n";
+# }
+# $result.="</select>\n";
+ my $revise = &revise_button();
+ $result.=<<END;
+<p>
+There are $total_results matches to your query. $revise
+</p><p>
+Search:$pretty_query_string
</p>
-LASTREVISIONDATEEND
+</form>
+</body>
+</html>
+END
+ $r->print($result);
+ return;
+}
- $scrout.=&searchphrasefield('Limit by publisher/owner','owner',
- $metadatafields{'owner'});
+#####################################################################
+#####################################################################
+
+=pod
+
+=item MySQL Table Description
+
+MySQL table creation requires a precise description of the data to be
+stored. The use of the correct types to hold data is vital to efficient
+storage and quick retrieval of records. The columns must be described in
+the following format:
+
+=cut
+
+#####################################################################
+#####################################################################
+#
+# These should probably be scoped but I don't have time right now...
+#
+my @Datatypes;
+my @Fullindicies;
+
+######################################################################
+######################################################################
- $scrout.=&selectbox('Limit by copyright/distribution','copyright',
- 'any',%cprtag);
+=pod
-# ---------------------------------------------------------------- Print screen
- $r->print(<<ENDDOCUMENT);
+=item &create_results_table()
+
+Creates the table of search results by calling lonmysql. Stores the
+table id in $ENV{'form.table'}
+
+Inputs: none.
+
+Returns: the identifier of the table on success, undef on error.
+
+=cut
+
+######################################################################
+######################################################################
+sub set_up_table_structure {
+ my ($datatypes,$fullindicies) =
+ &LONCAPA::lonmetadata::describe_metadata_storage();
+ # Copy the table description before modifying it...
+ @Datatypes = @{$datatypes};
+ unshift(@Datatypes,{name => 'id',
+ type => 'MEDIUMINT',
+ restrictions => 'UNSIGNED NOT NULL',
+ primary_key => 'yes',
+ auto_inc => 'yes' });
+ @Fullindicies = @{$fullindicies};
+ return;
+}
+
+sub create_results_table {
+ &set_up_table_structure();
+ my $table = &Apache::lonmysql::create_table
+ ( { columns => \@Datatypes,
+ FULLTEXT => [{'columns' => \@Fullindicies},],
+ } );
+ if (defined($table)) {
+ $ENV{'form.table'} = $table;
+ return $table;
+ }
+ return undef; # Error...
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item Search Status update functions
+
+Each of the following functions changes the values of one of the
+input fields used to display the search status to the user. The names
+should be explanatory.
+
+Inputs: Apache request handler ($r), text to display.
+
+Returns: Nothing.
+
+=over 4
+
+=item &update_count_status()
+
+=item &update_status()
+
+=item &update_seconds()
+
+=back
+
+=cut
+
+######################################################################
+######################################################################
+sub update_count_status {
+ my ($r,$text) = @_;
+ $text =~ s/\'/\\\'/g;
+ $r->print
+ ("<script>document.statusform.count.value = ' $text'</script>\n");
+ $r->rflush();
+}
+
+sub update_status {
+ my ($r,$text) = @_;
+ $text =~ s/\'/\\\'/g;
+ $r->print
+ ("<script>document.statusform.status.value = ' $text'</script>\n");
+ $r->rflush();
+}
+
+{
+ my $max_time = 40; # seconds for the search to complete
+ my $start_time = 0;
+ my $last_time = 0;
+
+sub reset_timing {
+ $start_time = 0;
+ $last_time = 0;
+}
+
+sub time_left {
+ if ($start_time == 0) {
+ $start_time = time;
+ }
+ my $time_left = $max_time - (time - $start_time);
+ $time_left = 0 if ($time_left < 0);
+ return $time_left;
+}
+
+sub update_seconds {
+ my ($r) = @_;
+ my $time = &time_left();
+ if (($last_time-$time) > 0) {
+ $r->print("<script>".
+ "document.statusform.seconds.value = '$time'".
+ "</script>\n");
+ $r->rflush();
+ }
+ $last_time = $time;
+}
+
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &revise_button()
+
+Inputs: None
+
+Returns: html string for a 'revise search' button.
+
+=cut
+
+######################################################################
+######################################################################
+sub revise_button {
+ my $revise_phase = 'disp_basic';
+ $revise_phase = 'disp_adv' if ($ENV{'form.searchmode'} eq 'advanced');
+ my $newloc = '/adm/searchcat'.
+ '?persistent_db_id='.$ENV{'form.persistent_db_id'}.
+ '&cleargroupsort=1'.
+ '&phase='.$revise_phase;
+ my $result = qq{<input type="button" value="Revise search" name="revise"} .
+ qq{ onClick="parent.location='$newloc';" /> };
+ return $result;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &run_search()
+
+Executes a search query by sending it the the other servers and putting the
+results into MySQL.
+
+=cut
+
+######################################################################
+######################################################################
+sub run_search {
+ my ($r,$query,$customquery,$customshow,$serverlist,$pretty_string) = @_;
+ my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
+ $bodytag.=&Apache::lonhtmlcommon::breadcrumbs
+ (undef,'Searching','Searching',undef,undef,
+ $ENV{'form.catalogmode'} ne 'groupsearch');
+ my $connection = $r->connection;
+ #
+ # Print run_search header
+ #
+ $r->print(<<END);
+<html>
+<head><title>Search Status</title></head>
+$bodytag
+<form name="statusform" action="" method="post">
+<input type="hidden" name="Queue" value="" />
+END
+ # Remove leading and trailing <br />
+ $pretty_string =~ s:^\s*<br />::i;
+ $pretty_string =~ s:(<br />)*\s*$::im;
+ my @Lines = split("<br />",$pretty_string);
+ # I keep getting blank items at the end of the list, hence the following:
+ while ($Lines[-1] =~ /^\s*$/ && @Lines) {
+ pop(@Lines);
+ }
+ if (@Lines > 2) {
+ $pretty_string = join '<br />',(@Lines[0..2],'....<br />');
+ }
+ $r->print(&mt("Search: [_1]",$pretty_string));
+ $r->rflush();
+ #
+ # Determine the servers we need to contact.
+ my @Servers_to_contact;
+ if (defined($serverlist)) {
+ if (ref($serverlist) eq 'ARRAY') {
+ @Servers_to_contact = @$serverlist;
+ } else {
+ @Servers_to_contact = ($serverlist);
+ }
+ } else {
+ @Servers_to_contact = sort(keys(%Apache::lonnet::libserv));
+ }
+ my %Server_status;
+ #
+ # Check on the mysql table we will use to store results.
+ my $table =$ENV{'form.table'};
+ if (! defined($table) || $table eq '' || $table =~ /\D/ ) {
+ $r->print("Unable to determine table id to store search results in.".
+ "The search has been aborted.</body></html>");
+ return;
+ }
+ my $table_status = &Apache::lonmysql::check_table($table);
+ if (! defined($table_status)) {
+ $r->print("Unable to determine status of table.</body></html>");
+ &Apache::lonnet::logthis("Bogus table id of $table for ".
+ "$ENV{'user.name'} @ $ENV{'user.domain'}");
+ &Apache::lonnet::logthis("lonmysql error = ".
+ &Apache::lonmysql::get_error());
+ return;
+ }
+ if (! $table_status) {
+ &Apache::lonnet::logthis("lonmysql error = ".
+ &Apache::lonmysql::get_error());
+ &Apache::lonnet::logthis("lonmysql debug = ".
+ &Apache::lonmysql::get_debug());
+ &Apache::lonnet::logthis('table status = "'.$table_status.'"');
+ $r->print("The table id,$table, we tried to use is invalid.".
+ "The search has been aborted.</body></html>");
+ return;
+ }
+ ##
+ ## Prepare for the big loop.
+ my $hitcountsum;
+ my $server;
+ my $status;
+ my $revise = &revise_button();
+ $r->print(<<END);
+<table>
+<tr><th>Status</th><th>Total Matches</th><th>Time Remaining</th><th></th></tr>
+<tr>
+<td><input type="text" name="status" value="" size="30" /></td>
+<td><input type="text" name="count" value="" size="10" /></td>
+<td><input type="text" name="seconds" value="" size="8" /></td>
+<td>$revise</td>
+</tr>
+</table>
+</form>
+END
+ $r->rflush();
+ &reset_timing();
+ &update_seconds($r);
+ &update_status($r,&mt('contacting [_1]',$Servers_to_contact[0]));
+ while (&time_left() &&
+ ((@Servers_to_contact) || keys(%Server_status))) {
+ &update_seconds($r);
+ #
+ # Send out a search request
+ if (@Servers_to_contact) {
+ # Contact one server
+ my $server = shift(@Servers_to_contact);
+ &update_status($r,&mt('contacting [_1]',$server));
+ my $reply=&Apache::lonnet::metadata_query($query,$customquery,
+ $customshow,[$server]);
+ ($server) = keys(%$reply);
+ $Server_status{$server} = $reply->{$server};
+ } else {
+ # wait a sec. to give time for files to be written
+ # This sleep statement is here instead of outside the else
+ # block because we do not want to pause if we have servers
+ # left to contact.
+ if (scalar (keys(%Server_status))) {
+ &update_status($r,
+ &mt('waiting on [_1]',join(' ',keys(%Server_status))));
+ }
+ sleep(1);
+ }
+ #
+ # Loop through the servers we have contacted but do not
+ # have results from yet, looking for results.
+ foreach my $server (keys(%Server_status)) {
+ last if ($connection->aborted());
+ &update_seconds($r);
+ my $status = $Server_status{$server};
+ if ($status eq 'con_lost') {
+ delete ($Server_status{$server});
+ next;
+ }
+ $status=~/^([\.\w]+)$/;
+ my $datafile=$r->dir_config('lonDaemons').'/tmp/'.$1;
+ if (-e $datafile && ! -e "$datafile.end") {
+ &update_status($r,&mt('Receiving results from [_1]',$server));
+ next;
+ }
+ last if ($connection->aborted());
+ if (-e "$datafile.end") {
+ &update_status($r,&mt('Reading results from [_1]',$server));
+ if (-z "$datafile") {
+ delete($Server_status{$server});
+ next;
+ }
+ my $fh;
+ if (!($fh=Apache::File->new($datafile))) {
+ $r->print("Unable to open search results file for ".
+ "server $server. Omitting from search");
+ delete($Server_status{$server});
+ next;
+ }
+ # Read in the whole file.
+ while (my $result = <$fh>) {
+ last if ($connection->aborted());
+ #
+ # Records are stored one per line
+ chomp($result);
+ next if (! $result);
+ #
+ # Parse the result.
+ my %Fields = &parse_raw_result($result,$server);
+ $Fields{'hostname'} = $server;
+ #
+ # Skip based on copyright
+ next if (! ©right_check(\%Fields));
+ #
+ # Store the result in the mysql database
+ my $result = &Apache::lonmysql::store_row($table,\%Fields);
+ if (! defined($result)) {
+ $r->print(&Apache::lonmysql::get_error());
+ }
+ #
+ $hitcountsum ++;
+ &update_seconds($r);
+ if ($hitcountsum % 50 == 0) {
+ &update_count_status($r,$hitcountsum);
+ }
+ }
+ $fh->close();
+ # $server is only deleted if the results file has been
+ # found and (successfully) opened. This may be a bad idea.
+ delete($Server_status{$server});
+ }
+ last if ($connection->aborted());
+ &update_count_status($r,$hitcountsum);
+ }
+ last if ($connection->aborted());
+ &update_seconds($r);
+ }
+ &update_status($r,&mt('Search Complete [_1]',$server));
+ &update_seconds($r);
+ #
+ &Apache::lonmysql::disconnect_from_db(); # This is unneccessary
+ #
+ # We have run out of time or run out of servers to talk to and
+ # results to get, so let the client know the top frame needs to be
+ # loaded from /adm/searchcat
+ $r->print("</body></html>");
+# if ($ENV{'form.catalogmode'} ne 'groupsearch') {
+ $r->print("<script>".
+ "window.location='/adm/searchcat?".
+ "phase=sort&".
+ "persistent_db_id=$ENV{'form.persistent_db_id'}';".
+ "</script>");
+# }
+ return;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &prev_next_buttons()
+
+Returns html for the previous and next buttons on the search results page.
+
+=cut
+
+######################################################################
+######################################################################
+sub prev_next_buttons {
+ my ($current_min,$show,$total,$parms) = @_;
+ return '' if ($show eq 'all'); # No links if you get them all at once.
+ #
+ # Create buttons
+ my $buttons = '<input type="submit" name="prev" value="'.&mt('Prev').'" ';
+ $buttons .= '/>';
+ $buttons .= ' 'x3;
+ $buttons .= '<input type="submit" name="reload" '.
+ 'value="'.&mt('Reload').'" />';
+ $buttons .= ' 'x3;
+ $buttons .= '<input type="submit" name="next" value="'.&mt('Next').'" ';
+ $buttons .= '/>';
+ return $buttons;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &display_results()
+
+Prints the results out for selection and perusal.
+
+=cut
+
+######################################################################
+######################################################################
+sub display_results {
+ my ($r,$importbutton,$closebutton,$diropendb) = @_;
+ my $connection = $r->connection;
+ $r->print(&search_results_header($importbutton,$closebutton));
+ ##
+ ## Set viewing function
+ ##
+ my $viewfunction = $Views{$ENV{'form.viewselect'}};
+ if (!defined($viewfunction)) {
+ $r->print("Internal Error - Bad view selected.\n");
+ $r->rflush();
+ return;
+ }
+ ##
+ ## $checkbox_num is a count of the number of checkboxes output on the
+ ## page this is used only during catalogmode=groupsearch.
+ my $checkbox_num = 0;
+ ##
+ ## Get the catalog controls setup
+ ##
+ my $action = "/adm/searchcat?phase=results";
+ ##
+ ## Deal with groupsearch by opening the groupsearch db file.
+ if ($ENV{'form.catalogmode'} eq 'groupsearch') {
+ if (! tie(%groupsearch_db,'GDBM_File',$diropendb,
+ &GDBM_WRCREAT(),0640)) {
+ $r->print('Unable to store import results.</form></body></html>');
+ $r->rflush();
+ return;
+ }
+ }
+ ##
+ ## Prepare the table for querying
+ my $table = $ENV{'form.table'};
+ return if (! &ensure_db_and_table($r,$table));
+ ##
+ ## Get the number of results
+ my $total_results = &Apache::lonmysql::number_of_rows($table);
+ if (! defined($total_results)) {
+ $r->print("A MySQL error has occurred.</form></body></html>");
+ &Apache::lonnet::logthis("lonmysql was unable to determine the number".
+ " of rows in table ".$table);
+ &Apache::lonnet::logthis(&Apache::lonmysql::get_error());
+ return;
+ }
+ ##
+ ## Determine how many results we need to get
+ $ENV{'form.start'} = 1 if (! exists($ENV{'form.start'}));
+ $ENV{'form.show'} = 20 if (! exists($ENV{'form.show'}));
+ if (exists($ENV{'form.prev'})) {
+ $ENV{'form.start'} -= $ENV{'form.show'};
+ } elsif (exists($ENV{'form.next'})) {
+ $ENV{'form.start'} += $ENV{'form.show'};
+ }
+ $ENV{'form.start'} = 1 if ($ENV{'form.start'}<1);
+ $ENV{'form.start'} = $total_results if ($ENV{'form.start'}>$total_results);
+ my $min = $ENV{'form.start'};
+ my $max;
+ if ($ENV{'form.show'} eq 'all') {
+ $max = $total_results ;
+ } else {
+ $max = $min + $ENV{'form.show'} - 1;
+ $max = $total_results if ($max > $total_results);
+ }
+ ##
+ ## Output form elements
+ $r->print(&hidden_field('table').
+ &hidden_field('phase').
+ &hidden_field('persistent_db_id').
+ &hidden_field('start')
+ );
+ ##
+ ## Output links (if necessary) for 'prev' and 'next' pages.
+ $r->print
+ ('<table width="100%"><tr><td width="50%" align="right">'.
+ &prev_next_buttons($min,$ENV{'form.show'},$total_results).
+ '</td><td align="right">'.
+ &viewoptions().'</td></tr></table>'
+ );
+ if ($total_results == 0) {
+ $r->print('<meta HTTP-EQUIV="Refresh" CONTENT="2">'.
+ '<h3>'.&mt('There are currently no results').'.</h3>'.
+ "</form></body></html>");
+ return;
+ } else {
+ $r->print
+ ("<center>Results $min to $max out of $total_results</center>\n");
+ }
+ ##
+ ## Get results from MySQL table
+ my @Results = &Apache::lonmysql::get_rows($table,
+ 'id>='.$min.' AND id<='.$max);
+ ##
+ ## Loop through the results and output them.
+ foreach my $row (@Results) {
+ if ($connection->aborted()) {
+ &cleanup();
+ return;
+ }
+ my %Fields = %{&parse_row(@$row)};
+ my $output="<p>\n";
+ if (! defined($Fields{'title'}) || $Fields{'title'} eq '') {
+ $Fields{'title'} = 'Untitled';
+ }
+ my $prefix=&catalogmode_output($Fields{'title'},$Fields{'url'},
+ $Fields{'id'},$checkbox_num++);
+ # Render the result into html
+ $output.= &$viewfunction($prefix,%Fields);
+ # Print them out as they come in.
+ $r->print($output);
+ $r->rflush();
+ }
+ if (@Results < 1) {
+ $r->print(&mt("There were no results matching your query"));
+ } else {
+ $r->print
+ ('<center>'.
+ &prev_next_buttons($min,$ENV{'form.show'},$total_results,
+ "table=".$ENV{'form.table'}.
+ "&phase=results".
+ "&persistent_db_id=".
+ $ENV{'form.persistent_db_id'})
+ ."</center>\n"
+ );
+ }
+ $r->print("</form></body></html>");
+ $r->rflush();
+ untie %groupsearch_db if (tied(%groupsearch_db));
+ return;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &catalogmode_output($title,$url,$fnum,$checkbox_num)
+
+Returns html needed for the various catalog modes. Gets inputs from
+$ENV{'form.catalogmode'}. Stores data in %groupsearch_db.
+
+=cut
+
+######################################################################
+######################################################################
+sub catalogmode_output {
+ my $output = '';
+ my ($title,$url,$fnum,$checkbox_num) = @_;
+ if ($ENV{'form.catalogmode'} eq 'interactive') {
+ $title=~ s/\'/\\\'/g;
+ if ($ENV{'form.catalogmode'} eq 'interactive') {
+ $output.=<<END
+<font size='-1'><INPUT TYPE="button" NAME="returnvalues" VALUE="SELECT"
+onClick="javascript:select_data('$title','$url')">
+</font>
+END
+ }
+ } elsif ($ENV{'form.catalogmode'} eq 'groupsearch') {
+ $groupsearch_db{"pre_${fnum}_link"}=$url;
+ $groupsearch_db{"pre_${fnum}_title"}=$title;
+ $output.=<<END;
+<font size='-1'>
+<input type="checkbox" name="returnvalues" value="SELECT"
+onClick="javascript:queue($checkbox_num,$fnum)" />
+</font>
+END
+ }
+ return $output;
+}
+######################################################################
+######################################################################
+
+=pod
+
+=item &parse_row()
+
+Parse a row returned from the database.
+
+=cut
+
+######################################################################
+######################################################################
+sub parse_row {
+ my @Row = @_;
+ my %Fields;
+ if (! scalar(@Datatypes)) {
+ &set_up_table_structure();
+ }
+ for (my $i=0;$i<=$#Row;$i++) {
+ $Fields{$Datatypes[$i]->{'name'}}=&Apache::lonnet::unescape($Row[$i]);
+ }
+ $Fields{'language'} =
+ &Apache::loncommon::languagedescription($Fields{'language'});
+ $Fields{'copyrighttag'} =
+ &Apache::loncommon::copyrightdescription($Fields{'copyright'});
+ $Fields{'mimetag'} =
+ &Apache::loncommon::filedescription($Fields{'mime'});
+ return \%Fields;
+}
+
+###########################################################
+###########################################################
+
+=pod
+
+=item &parse_raw_result()
+
+Takes a line from the file of results and parse it. Returns a hash
+with keys according to column labels
+
+In addition, the following tags are set by calling the appropriate
+lonnet function: 'language', 'copyrighttag', '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) = @_;
+ # conclude from self to others regarding fields
+ my %Fields=&LONCAPA::lonmetadata::metadata_col_to_hash
+ (map {
+ &Apache::lonnet::unescape($_);
+ } (split(/\,/,$result)) );
+ 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 html headers and javascript code to deal with different
+calling modes.
+
+Takes most inputs directly from %ENV, except $mode.
+
+=over 4
+
+=item $mode is either (at this writing) 'Basic' or 'Advanced'
+
+=back
+
+The following environment variables are checked:
+
+=over 4
+
+=item 'form.catalogmode'
+
+Checked for 'interactive' and 'groupsearch'.
+
+=item 'form.mode'
+
+Checked for existance & 'edit' mode.
+
+=item 'form.form'
+
+Contains the name of the form that has the input fields to set
+
+=item 'form.element'
+
+the name of the input field to put the URL into
+
+=item 'form.titleelement'
+
+the name of the input field to put the title into
+
+=back
+
+=cut
+
+######################################################################
+######################################################################
+sub search_results_header {
+ my ($importbutton,$closebutton) = @_;
+ my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
+ my $result = '';
+ # output beginning of search page
+ # conditional output of script functions dependent on the mode in
+ # which the search was invoked
+ if ($ENV{'form.catalogmode'} eq 'interactive'){
+ if (! exists($ENV{'form.mode'}) || $ENV{'form.mode'} ne 'edit') {
+ $result.=<<SCRIPT;
+<script type="text/javascript">
+ function select_data(title,url) {
+ changeTitle(title);
+ changeURL(url);
+ parent.close();
+ }
+ function changeTitle(val) {
+ if (parent.opener.inf.document.forms.resinfo.elements.t) {
+ parent.opener.inf.document.forms.resinfo.elements.t.value=val;
+ }
+ }
+ function changeURL(val) {
+ if (parent.opener.inf.document.forms.resinfo.elements.u) {
+ parent.opener.inf.document.forms.resinfo.elements.u.value=val;
+ }
+ }
+</script>
+SCRIPT
+ } elsif ($ENV{'form.mode'} eq 'edit') {
+ my $form = $ENV{'form.form'};
+ my $element = $ENV{'form.element'};
+ my $titleelement = $ENV{'form.titleelement'};
+ my $changetitle;
+ if (!$titleelement) {
+ $changetitle='function changeTitle(val) {}';
+ } else {
+ $changetitle=<<END;
+function changeTitle(val) {
+ if (parent.targetwin.document) {
+ parent.targetwin.document.forms["$form"].elements["$titleelement"].value=val;
+ } else {
+ var url = 'forms[\"$form\"].elements[\"$titleelement\"].value';
+ alert("Unable to transfer data to "+url);
+ }
+}
+END
+ }
+
+ $result.=<<SCRIPT;
+<script type="text/javascript">
+function select_data(title,url) {
+ changeURL(url);
+ changeTitle(title);
+ parent.close();
+}
+$changetitle
+function changeURL(val) {
+ if (parent.targetwin.document) {
+ parent.targetwin.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 $ENV{'form.catalogmode'} eq 'groupsearch';
+<script type="text/javascript">
+ function queue(checkbox_num,val) {
+ if (document.forms.results.returnvalues.length != "undefined" &&
+ typeof(document.forms.results.returnvalues.length) == "number") {
+ if (document.forms.results.returnvalues[checkbox_num].checked) {
+ parent.statusframe.document.forms.statusform.elements.Queue.value +='1a'+val+'b';
+ } else {
+ parent.statusframe.document.forms.statusform.elements.Queue.value +='0a'+val+'b';
+ }
+ } else {
+ if (document.forms.results.returnvalues.checked) {
+ parent.statusframe.document.forms.statusform.elements.Queue.value +='1a'+val+'b';
+ } else {
+ parent.statusframe.document.forms.statusform.elements.Queue.value +='0a'+val+'b';
+ }
+ }
+ }
+ function select_group() {
+ parent.window.location=
+ "/adm/groupsort?mode=$ENV{'form.mode'}&catalogmode=groupsearch&acts="+
+ parent.statusframe.document.forms.statusform.elements.Queue.value;
+ }
+</script>
+SCRIPT
+ $result.=<<END;
+</head>
+$bodytag
+<form name="results" method="post" action="/adm/searchcat" >
+<input type="hidden" name="Queue" value="" />
+$importbutton
+END
+ return $result;
+}
+
+######################################################################
+######################################################################
+sub search_status_header {
+ my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
+ return <<ENDSTATUS;
+<html><head><title>Search Status</title></head>
+$bodytag
+<h3>Search Status</h3>
+Sending search request to LON-CAPA servers.<br />
+ENDSTATUS
+}
+
+sub results_link {
+ my $basic_link = "/adm/searchcat?"."&table=".$ENV{'form.table'}.
+ "&persistent_db_id=".$ENV{'form.persistent_db_id'};
+ my $results_link = $basic_link."&phase=results".
+ "&pause=1"."&start=1";
+ return $results_link;
+}
+
+######################################################################
+######################################################################
+sub print_frames_interface {
+ my $r = shift;
+ my $basic_link = "/adm/searchcat?"."&table=".$ENV{'form.table'}.
+ "&persistent_db_id=".$ENV{'form.persistent_db_id'};
+ my $run_search_link = $basic_link."&phase=run_search";
+ my $results_link = &results_link();
+ my $result = <<"ENDFRAMES";
+<html>
+<head>
+<script>
+var targetwin = opener;
+var queue = '';
+</script>
+<title>LON-CAPA Digital Library Search Results</title>
+</head>
+<frameset rows="150,*">
+ <frame name="statusframe" src="$run_search_link">
+ <frame name="resultsframe" src="$results_link">
+</frameset>
+</html>
+ENDFRAMES
+
+ $r->print($result);
+ return;
+}
+
+######################################################################
+######################################################################
+
+sub has_stat_data {
+ my ($values) = @_;
+ if ( (defined($values->{'count'}) && $values->{'count'} ne '') ||
+ (defined($values->{'stdno'}) && $values->{'stdno'} ne '') ||
+ (defined($values->{'disc'}) && $values->{'disc'} ne '') ||
+ (defined($values->{'avetries'}) && $values->{'avetries'} ne '') ||
+ (defined($values->{'difficulty'}) && $values->{'difficulty'} ne '')) {
+ return 1;
+ }
+ return 0;
+}
+
+sub statfields {
+ return ('count','stdno','disc','avetries','difficulty');
+}
+
+sub has_eval_data {
+ my ($values) = @_;
+ if ( (defined($values->{'clear'}) && $values->{'clear'} ne '') ||
+ (defined($values->{'technical'}) && $values->{'technical'} ne '') ||
+ (defined($values->{'correct'}) && $values->{'correct'} ne '') ||
+ (defined($values->{'helpful'}) && $values->{'helpful'} ne '') ||
+ (defined($values->{'depth'}) && $values->{'depth'} ne '')) {
+ return 1;
+ }
+ return 0;
+}
+
+sub evalfields {
+ return ('clear','technical','correct','helpful','depth');
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item Metadata Viewing Functions
+
+Output is a HTML-ified string.
+
+Input arguments are title, author, subject, url, keywords, version,
+notes, short abstract, mime, language, creation date,
+last revision date, owner, copyright, hostname, and
+extra custom metadata to show.
+
+=over 4
+
+=item &detailed_citation_view()
+
+=cut
+
+######################################################################
+######################################################################
+sub detailed_citation_view {
+ my ($prefix,%values) = @_;
+ my $result;
+ $result .= '<b>'.$prefix.
+ '<img src="'.&Apache::loncommon::icon($values{'url'}).' " />'.' '.
+ '<a href="http://'.$ENV{'HTTP_HOST'}.$values{'url'}.'" '.
+ 'target="search_preview">'.$values{'title'}."</a></b>\n";
+ $result .= "<p>\n";
+ $result .= '<b>'.$values{'author'}.'</b>,'.
+ ' <i>'.$values{'owner'}.'</i><br />';
+ foreach my $field
+ (
+ { name=>'url',
+ translate => '<b>URL:</b> [_1]',
+ special => 'url link',},
+ { name=>'subject',
+ translate => '<b>Subject:</b> [_1]',},
+ { name=>'keywords',
+ translate => '<b>Keywords:</b> [_1]',},
+ { name=>'notes',
+ translate => '<b>Notes:</b> [_1]',},
+ { name=>'mimetag',
+ translate => '<b>MIME Type:</b> [_1]',},
+ { name=>'standards',
+ translate => '<b>Standards:</b>[_1]',},
+ { name=>'copyrighttag',
+ translate => '<b>Copyright/Distribution:</b> [_1]',},
+ { name=>'count',
+ format => "%d",
+ translate => '<b>Access Count:</b> [_1]',},
+ { name=>'stdno',
+ format => "%d",
+ translate => '<b>Number of Students:</b> [_1]',},
+ { name=>'avetries',
+ format => "%.2f",
+ translate => '<b>Average Tries:</b> [_1]',},
+ { name=>'disc',
+ format => "%.2f",
+ translate => '<b>Degree of Discrimination:</b> [_1]',},
+ { name=>'difficulty',
+ format => "%.2f",
+ translate => '<b>Degree of Difficulty:</b> [_1]',},
+ { name=>'clear',
+ format => "%.2f",
+ translate => '<b>Clear:</b> [_1]',},
+ { name=>'depth',
+ format => "%.2f",
+ translate => '<b>Depth:</b> [_1]',},
+ { name=>'helpful',
+ format => "%.2f",
+ translate => '<b>Helpful:</b> [_1]',},
+ { name=>'correct',
+ format => "%.2f",
+ translate => '<b>Correct:</b> [_1]',},
+ { name=>'technical',
+ format => "%.2f",
+ translate => '<b>Technical:</b> [_1]',},
+ { name=>'comefrom_list',
+ type => 'list',
+ translate => 'Resources that lead up to this resource in maps',},
+ { name=>'goto_list',
+ type => 'list',
+ translate => 'Resources that follow this resource in maps',},
+ { name=>'sequsage_list',
+ type => 'list',
+ translate => 'Resources using or importing resource',},
+ ) {
+ next if (! exists($values{$field->{'name'}}) ||
+ $values{$field->{'name'}} eq '');
+ if (exists($field->{'type'}) && $field->{'type'} eq 'list') {
+ $result .= '<b>'.&mt($field->{'translate'}).'</b><ul>';
+ foreach my $item (split(',',$values{$field->{'name'}})){
+ $result .= '<li>'.
+ '<a target="search_preview" '.
+ 'href="/res/'.$item.'">'.$item.'</a></li>';
+ }
+ $result .= '</ul>';
+ } elsif (exists($field->{'format'}) && $field->{'format'} ne ''){
+ $result.= &mt($field->{'translate'},
+ sprintf($field->{'format'},
+ $values{$field->{'name'}}))."<br />\n";
+ } else {
+ if ($field->{'special'} eq 'url link') {
+ $result.=
+ &mt($field->{'translate'},
+ '<a href="'.$values{'url'}.'" '.
+ 'target="search_preview">'.
+ $values{$field->{'name'}}.
+ '</a>');
+ } else {
+ $result.= &mt($field->{'translate'},
+ $values{$field->{'name'}});
+ }
+ $result .= "<br />\n";
+ }
+ }
+ $result .= "</p>";
+ if (exists($values{'extrashow'}) && $values{'extrashow'} ne '') {
+ $result .= '<p>'.$values{'extrashow'}.'</p>';
+ }
+ if (exists($values{'shortabstract'}) && $values{'shortabstract'} ne '') {
+ $result .= '<p>'.$values{'shortabstract'}.'</p>';
+ }
+ $result .= '<hr align="left" width="200" noshade />'."\n";
+ return $result;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &summary_view()
+
+=cut
+######################################################################
+######################################################################
+sub summary_view {
+ my ($prefix,%values) = @_;
+ my $icon=&Apache::loncommon::icon($values{'url'});
+ my $result=<<END;
+$prefix<img src="$icon" />
+<a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
+ target='search_preview'>$values{'author'}</a><br />
+$values{'title'}<br />
+$values{'owner'} -- $values{'lastrevisiondate'}<br />
+$values{'copyrighttag'}<br />
+$values{'extrashow'}
+</p>
+<hr align='left' width='200' noshade />
+END
+ return $result;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &compact_view()
+
+=cut
+
+######################################################################
+######################################################################
+sub compact_view {
+ my ($prefix,%values) = @_;
+ my $result =
+ $prefix.'<img src="'.&Apache::loncommon::icon($values{'url'}).
+ '"> <a href="'.$values{'url'}.'" target="search_preview">'.
+ $values{'title'}.'</a>'.(' 'x2).
+ '<b>'.$values{'author'}.'</b><br />';
+ return $result;
+}
+
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &fielded_format_view()
+
+=cut
+
+######################################################################
+######################################################################
+sub fielded_format_view {
+ my ($prefix,%values) = @_;
+ my $icon=&Apache::loncommon::icon($values{'url'});
+ my %Translated = &Apache::lonmeta::fieldnames();
+ my $result=<<END;
+$prefix <img src="$icon" />
+<dl>
+<dt>URL:</dt>
+ <dd><a href="http://$ENV{'HTTP_HOST'}$values{'url'}"
+ target='search_preview'>$values{'url'}</a></dd>
+END
+ foreach my $field ('title','author','subject','keywords','notes',
+ 'mimetag','language','creationdate','lastrevisiondate',
+ 'owner','copyrighttag','hostname','abstract') {
+ $result .= (' 'x4).'<dt>'.$Translated{$field}.'</dt>'."\n".
+ (' 'x8).'<dd>'.$values{$field}.'</dd>'."\n";
+ }
+ if (&has_stat_data(\%values)) {
+ foreach my $field (&statfields()) {
+ $result .= (' 'x4).'<dt>'.$Translated{$field}.'</dt>'."\n".
+ (' 'x8).'<dd>'.$values{$field}.'</dd>'."\n";
+ }
+ }
+ if (&has_eval_data(\%values)) {
+ foreach my $field (&evalfields()) {
+ $result .= (' 'x4).'<dt>'.$Translated{$field}.'</dt>'."\n".
+ (' 'x8).'<dd>'.$values{$field}.'</dd>'."\n";
+ }
+ }
+ $result .= "</dl>\n";
+ $result .= $values{'extrashow'};
+ $result .= '<hr align="left" width="200" noshade />'."\n";
+ return $result;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &xml_sgml_view()
+
+=back
+
+=cut
+
+######################################################################
+######################################################################
+sub xml_sgml_view {
+ my ($prefix,%values) = @_;
+ my $xml = '<LonCapaResource>'."\n";
+ # The usual suspects
+ foreach my $field ('url','title','author','subject','keywords','notes') {
+ $xml .= qq{<$field>$values{$field}</$field>}."\n";
+ }
+ #
+ $xml .= "<mimeInfo>\n";
+ foreach my $field ('mime','mimetag') {
+ $xml .= qq{<$field>$values{$field}</$field>}."\n";
+ }
+ $xml .= "</mimeInfo>\n";
+ #
+ $xml .= "<languageInfo>\n";
+ foreach my $field ('language','languagetag') {
+ $xml .= qq{<$field>$values{$field}</$field>}."\n";
+ }
+ $xml .= "</languageInfo>\n";
+ #
+ foreach my $field ('creationdate','lastrevisiondate','owner') {
+ $xml .= qq{<$field>$values{$field}</$field>}."\n";
+ }
+ #
+ $xml .= "<copyrightInfo>\n";
+ foreach my $field ('copyright','copyrighttag') {
+ $xml .= qq{<$field>$values{$field}</$field>}."\n";
+ }
+ $xml .= "</copyrightInfo>\n";
+ $xml .= qq{<repositoryLocation>$values{'hostname'}</repositoryLocation>}.
+ "\n";
+ $xml .= qq{<shortabstract>$values{'shortabstract'}</shortabstract>}."\n";
+ #
+ if (&has_stat_data(\%values)){
+ $xml .= "<problemstatistics>\n";
+ foreach my $field (&statfields()) {
+ $xml .= qq{<$field>$values{$field}</$field>}."\n";
+ }
+ $xml .= "</problemstatistics>\n";
+ }
+ #
+ if (&has_eval_data(\%values)) {
+ $xml .= "<evaluation>\n";
+ foreach my $field (&evalfields) {
+ $xml .= qq{<$field>$values{$field}</$field>}."\n";
+ }
+ $xml .= "</evaluation>\n";
+ }
+ #
+ $xml .= "</LonCapaResource>\n";
+ $xml = &HTML::Entities::encode($xml,'<>&');
+ my $result=<<END;
+$prefix
+<pre>
+$xml
+</pre>
+$values{'extrashow'}
+<hr align='left' width='200' noshade />
+END
+ return $result;
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &filled() see if field is filled.
+
+=cut
+
+######################################################################
+######################################################################
+sub filled {
+ my ($field)=@_;
+ if ($field=~/\S/ && $field ne 'any') {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+######################################################################
+######################################################################
+
+=pod
+
+=item &output_unparsed_phrase_error()
+
+=cut
+
+######################################################################
+######################################################################
+sub output_unparsed_phrase_error {
+ my ($r,$closebutton,$parms,$hidden_fields,$field)=@_;
+ my $errorstring;
+ if ($field eq 'basicexp') {
+ $errorstring = &mt('Unable to understand the search phrase <i>[_1]</i>. Please modify your search.',$ENV{'form.basicexp'});
+ } else {
+ $errorstring = &mt('Unable to understand the search phrase <b>[_1]</b>:<i>[_2]</i>.',$field,$ENV{'form.'.$field});
+ }
+ my $bodytag = &Apache::loncommon::bodytag('Search');
+ my $heading = &mt('Unparsed Field');
+ my $revise = &mt('Revise search request');
+ # make query information persistent to allow for subsequent revision
+ $r->print(<<ENDPAGE);
<html>
<head>
<title>The LearningOnline Network with CAPA</title>
</head>
-<body bgcolor="#FFFFFF">
-<img align=right src=/adm/lonIcons/lonlogos.gif>
-<h1>Search Catalog</h1>
+$bodytag
<form method="post" action="/adm/searchcat">
-<hr>
-<h3>Basic Search</h3>
+$hidden_fields
+$closebutton
+<hr />
+<h2>$heading</h2>
<p>
-Enter terms or phrases separated by search operators
-such as AND or OR then press SEARCH below. Terms should be specific
-to the title, author, subject, notes, or abstract information associated
-with a resource.
-<br>
-<input type="text" name="basicexp">
-<input type="checkbox" name="titleonly">
-<font color="#800000">Title only</font>
-<br>
-<input type="submit" name="basicsubmit" value="SEARCH">
+$errorstring
</p>
-<hr>
-<h3>Advanced Search</h3>
-$scrout
<p>
-<input type="submit" name="advancedsubmit" value="SEARCH">
+<a href="/adm/searchcat?$parms&persistent_db_id=$ENV{'form.persistent_db_id'}">$revise</a>
</p>
-</form>
</body>
</html>
-ENDDOCUMENT
- return OK;
-}
+ENDPAGE
+}
-# --------------------------------------------------------- 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.'">';
-}
-
-sub searchphrasefield {
- my ($title,$name,$value)=@_;
- my $instruction=<<END;
-Enter terms or phrases separated by search operators such
-as AND or OR.
-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="'.$value.'">';
-}
-
-sub selectbox {
- my ($title,$name,$value,%options)=@_;
- my $uctitle=uc($title);
- my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".
- "</b></font><br>".'<select name="'.$name.'">';
- map {
- $selout.='<option value="'.$_.'"';
- if ($_ eq $value) { $selout.=' selected'; }
- $selout.='>'.$options{$_}.'</option>';
- } sort keys %options;
- return $selout.'</select>';
-}
-
-# --------------------------------------------------- Performing a basic search
-sub basicsearch {
- my ($r,$expression)=@_;
-
- my $query=$expression;
-# $query="select * from metadata where concat(title,':\@:',author) like '\%Sci\%'";
- $query="select * from metadata where concat(title,\" \",author) like '\%$expression\%'";
-# my $reply=&Apache::lonnet::reply("querysend:DESCRIBE metadata","msul3");
- 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>;
- }
+=pod
- my $compiledresult='';
+=item &output_blank_field_error()
- foreach my $result (@results) {
- my ($title,$author,$subject,$notes,$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;
+Output a complete page that indicates the user has not filled in enough
+information to do a search.
+
+Inputs: $r (Apache request handle), $closebutton, $parms.
+
+Returns: nothing
+
+$parms is extra information to include in the 'Revise search request' link.
+
+=cut
+
+######################################################################
+######################################################################
+sub output_blank_field_error {
+ my ($r,$closebutton,$parms,$hidden_fields)=@_;
+ my $bodytag=&Apache::loncommon::bodytag('Search');
+ my $errormsg = &mt('You did not fill in enough information for the search to be started. You need to fill in relevant fields on the search page in order for a query to be processed.');
+ my $revise = &mt('Revise Search Request');
+ my $heading = &mt('Unactionable Search Queary');
+ $r->print(<<ENDPAGE);
+<html>
+<head>
+<title>The LearningOnline Network with CAPA</title>
+</head>
+$bodytag
+<form method="post" action="/adm/searchcat">
+$hidden_fields
+$closebutton
+<hr />
+<h2>$heading</h2>
<p>
-<b>Title:</b> $title<br>
-<b>Author(s):</b> $author<br>
-<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>
-<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> $hostname
+$errormsg
</p>
-END
+<p>
+<a href="/adm/searchcat?$parms&persistent_db_id=$ENV{'form.persistent_db_id'}">$revise</a>
+</p>
+</body>
+</html>
+ENDPAGE
+ return;
}
- unless ($compiledresult) {
- $compiledresult="There were no results that matched your query";
- }
+######################################################################
+######################################################################
+
+=pod
+
+=item &output_date_error()
+
+Output a full html page with an error message.
-# Question... allow to ask question from this page, or click to
-# search again?
+Inputs:
+
+ $r, the request pointer.
+ $message, the error message for the user.
+ $closebutton, the specialized close button needed for groupsearch.
+
+=cut
+
+######################################################################
+######################################################################
+sub output_date_error {
+ my ($r,$message,$closebutton,$hidden_fields)=@_;
+ # make query information persistent to allow for subsequent revision
+ my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
$r->print(<<RESULTS);
<html>
<head>
<title>The LearningOnline Network with CAPA</title>
</head>
-<body bgcolor="#ffffff">
-<img align=right src=/adm/lonIcons/lonlogos.gif>
+$bodytag
+<img align='right' src='/adm/lonIcons/lonlogos.gif' />
<h1>Search Catalog</h1>
<form method="post" action="/adm/searchcat">
-<hr>
-<h3>Search Query</h3>
+$hidden_fields
+<input type='button' value='Revise search request'
+onClick='this.form.submit();' />
+$closebutton
+<hr />
+<h3>Error</h3>
<p>
-$expression
+$message
</p>
-<h3>Search Results</h3>
-$compiledresult
</body>
</html>
RESULTS
+}
- return OK;
+######################################################################
+######################################################################
+
+=pod
+
+=item &start_fresh_session()
+
+Cleans the global %groupsearch_db by removing all fields which begin with
+'pre_' or 'store'.
+
+=cut
+
+######################################################################
+######################################################################
+sub start_fresh_session {
+ delete $groupsearch_db{'mode_catalog'};
+ foreach (keys %groupsearch_db) {
+ if ($_ =~ /^pre_/) {
+ delete $groupsearch_db{$_};
+ }
+ if ($_ =~ /^store/) {
+ delete $groupsearch_db{$_};
+ }
+ }
}
1;
+
+sub cleanup {
+ if (tied(%groupsearch_db)) {
+ unless (untie(%groupsearch_db)) {
+ &Apache::lonnet::logthis('Failed cleanup searchcat: groupsearch_db');
+ }
+ }
+ &untiehash();
+ &Apache::lonmysql::disconnect_from_db();
+}
+
__END__
+
+=pod
+
+=back
+
+=cut