--- loncom/interface/lonsearchcat.pm 2001/01/03 16:20:59 1.1 +++ loncom/interface/lonsearchcat.pm 2001/03/08 20:54:53 1.6 @@ -1,20 +1,20 @@ # The LearningOnline Network # Search Catalog # -# (Internal Server Error Handler -# -# (Login Screen -# 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14, -# 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer) -# -# 3/1/1 Gerd Kortemeyer) -# -# 3/1 Gerd Kortemeyer +# 03/08/2001 Scott Harrison # package Apache::lonsearchcat; use strict; use Apache::Constants qw(:common); +use Apache::lonnet(); +use Apache::File(); + +my %language; +my $scrout; +my %metadatafields; +my %cprtag; +my %mimetag; sub handler { my $r = shift; @@ -22,20 +22,757 @@ sub handler { $r->send_http_header; return OK if $r->header_only; -# --------------------------------------------------- Print login screen header + %metadatafields=(); + +# ------------------------------------------------ First, check out environment + $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'}; + + + %language=(); + $language{'any'}='Any language'; + { + my $fh=Apache::File->new($r->dir_config('lonTabDir').'/language.tab'); + map { + $_=~/(\w+)\s+([\w\s\-]+)/; + $language{$1}=$2; + } <$fh>; + } + + %cprtag=(); + $cprtag{'any'}='Any copyright/distribution'; + { + my $fh=Apache::File->new($r->dir_config('lonIncludes').'/copyright.tab'); + map { + $_=~/(\w+)\s+([\w\s\-]+)/; + $cprtag{$1}=$2; + } <$fh>; + } + + %mimetag=(); + $mimetag{'any'}='Any type'; + { + my $fh=Apache::File->new($r->dir_config('lonTabDir').'/filetypes.tab'); + map { + $_=~/(\w+)\s+(\w+)\s+([\w\s\-]+)/; + $mimetag{$1}=".$1 $3"; + } <$fh>; + } + + if ($ENV{'form.basicsubmit'} eq 'SEARCH') { + return &basicsearch($r,$ENV{'form.basicexp'}); + } + + $scrout=""; + $scrout.=&searchphrasefield('Limit by title','title', + ''); + + $scrout.=&searchphrasefield('Limit by author','author', + ''); + + $scrout.=&searchphrasefield('Limit by subject','subject', + ''); + + $scrout.=&searchphrasefield('Limit by notes','notes', + ''); + + $scrout.=&searchphrasefield('Limit by abstract','abstract', + ''); + + $scrout.=&selectbox('Limit by MIME type','mime', + 'notxxx',%mimetag); + + $scrout.=&selectbox('Limit by language','language', + 'any',%language); + + $scrout.=< +LIMIT BY CREATION DATE RANGE: + +
+between: + + +and: + + +

+CREATIONDATEEND + + $scrout.=< +LIMIT BY LAST REVISION DATE RANGE: + +
between: + + +and: + + +

+LASTREVISIONDATEEND + + $scrout.=&searchphrasefield('Limit by publisher/owner','owner', + $metadatafields{'owner'}); + + $scrout.=&selectbox('Limit by copyright/distribution','copyright', + 'any',%cprtag); + +# ---------------------------------------------------------------- Print screen $r->print(< The LearningOnline Network with CAPA +

Search Catalog

- +
+
+

Basic Search

+

+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. +
+ + +Title only +
+ +

+
+

Advanced Search

+$scrout +

+ +

+
ENDDOCUMENT return OK; } +# --------------------------------------------------------- Various form fields + +sub textfield { + my ($title,$name,$value)=@_; + return "\n

$title:
". + ''; +} + +sub searchphrasefield { + my ($title,$name,$value)=@_; + my $instruction=<$uctitle:". + ": $instruction
". + ''; +} + +sub selectbox { + my ($title,$name,$value,%options)=@_; + my $uctitle=uc($title); + my $selout="\n

$uctitle:". + "
".''; +} + +# --------------------------------------------------- Performing a basic search +sub basicsearch { + my ($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>; + } + + my $compiledresult=''; + + 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=< +Title: $title
+Author(s): $author
+Subject: $subject
+Keyword(s): not available yet
+Notes: $notes
+Abstract: $shortabstract
+MIME Type: $mimetag{$mime}
+Language: $language{$lang}
+Creation Date: $creationdate
+Last Revision Date: $lastrevisiondate
+Publisher/Owner: $owner
+Copyright/Distribution: $copyright
+Repository Location: $hostname +

+END +} + + unless ($compiledresult) { + $compiledresult="There were no results that matched your query"; + } + +# Question... allow to ask question from this page, or click to +# search again? + $r->print(< + +The LearningOnline Network with CAPA + + + +

Search Catalog

+
+
+

Search Query

+

+$expression +

+

Search Results

+$compiledresult + + +RESULTS + + return OK; +} + 1; __END__