Annotation of loncom/metadata_database/searchcat.pl, revision 1.20
1.1 harris41 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # searchcat.pl "Search Catalog" batch script
1.16 harris41 4: #
1.20 ! harris41 5: # $Id: searchcat.pl,v 1.19 2002/07/01 18:23:00 matthew Exp $
1.16 harris41 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: #
29: # YEAR=2001
1.17 harris41 30: # 04/14/2001, 04/16/2001 Scott Harrison
1.16 harris41 31: #
1.17 harris41 32: # YEAR=2002
33: # 05/11/2002 Scott Harrison
1.16 harris41 34: #
35: ###
1.1 harris41 36:
37: # This script goes through a LON-CAPA resource
38: # directory and gathers metadata.
39: # The metadata is entered into a SQL database.
40:
1.17 harris41 41: use lib '/home/httpd/lib/perl/';
42: use LONCAPA::Configuration;
43:
1.1 harris41 44: use IO::File;
45: use HTML::TokeParser;
1.6 harris41 46: use DBI;
1.1 harris41 47:
48: my @metalist;
49: # ----------------- Code to enable 'find' subroutine listing of the .meta files
50: require "find.pl";
51: sub wanted {
52: (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&
53: -f _ &&
1.10 harris41 54: /^.*\.meta$/ && !/^.+\.\d+\.[^\.]+\.meta$/ &&
1.1 harris41 55: push(@metalist,"$dir/$_");
56: }
57:
1.18 matthew 58: # --------------- Read loncapa_apache.conf and loncapa.conf and get variables
1.20 ! harris41 59: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.17 harris41 60: my %perlvar=%{$perlvarref};
61: undef $perlvarref; # remove since sensitive and not needed
62: delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
1.15 harris41 63:
64: # ------------------------------------- Only run if machine is a library server
65: exit unless $perlvar{'lonRole'} eq 'library';
1.1 harris41 66:
1.3 harris41 67: my $dbh;
1.1 harris41 68: # ------------------------------------- Make sure that database can be accessed
69: {
70: unless (
71: $dbh = DBI->connect("DBI:mysql:loncapa","www",$perlvar{'lonSqlAccess'},{ RaiseError =>0,PrintError=>0})
72: ) {
73: print "Cannot connect to database!\n";
74: exit;
75: }
1.19 matthew 76: my $make_metadata_table = "CREATE TABLE IF NOT EXISTS metadata (".
77: "title TEXT, author TEXT, subject TEXT, url TEXT, keywords TEXT, ".
78: "version TEXT, notes TEXT, abstract TEXT, mime TEXT, language TEXT, ".
79: "creationdate DATETIME, lastrevisiondate DATETIME, owner TEXT, ".
80: "copyright TEXT, FULLTEXT idx_title (title), ".
81: "FULLTEXT idx_author (author), FULLTEXT idx_subject (subject), ".
82: "FULLTEXT idx_url (url), FULLTEXT idx_keywords (keywords), ".
83: "FULLTEXT idx_version (version), FULLTEXT idx_notes (notes), ".
84: "FULLTEXT idx_abstract (abstract), FULLTEXT idx_mime (mime), ".
85: "FULLTEXT idx_language (language), FULLTEXT idx_owner (owner), ".
86: "FULLTEXT idx_copyright (copyright)) TYPE=MYISAM";
87: # It would sure be nice to have some logging mechanism.
88: $dbh->do($make_metadata_table);
1.1 harris41 89: }
90:
91: # ------------------------------------------------------------- get .meta files
1.2 harris41 92: opendir(RESOURCES,"$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}");
93: my @homeusers=grep
94: {&ishome("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$_")}
95: grep {!/^\.\.?$/} readdir(RESOURCES);
96: closedir RESOURCES;
97: foreach my $user (@homeusers) {
98: &find("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$user");
99: }
1.1 harris41 100:
101: # -- process each file to get metadata and put into search catalog SQL database
1.9 harris41 102: # Also, check to see if already there.
1.11 harris41 103: # I could just delete (without searching first), but this works for now.
1.1 harris41 104: foreach my $m (@metalist) {
105: my $ref=&metadata($m);
1.11 harris41 106: my $m2='/res/'.&declutter($m);
1.12 harris41 107: $m2=~s/\.meta$//;
108: my $q2="select * from metadata where url like binary '$m2'";
1.9 harris41 109: my $sth = $dbh->prepare($q2);
110: $sth->execute();
111: my $r1=$sth->fetchall_arrayref;
112: if (@$r1) {
1.12 harris41 113: $sth=$dbh->prepare("delete from metadata where url like binary '$m2'");
1.9 harris41 114: $sth->execute();
115: }
116: $sth=$dbh->prepare('insert into metadata values ('.
1.8 harris41 117: '"'.delete($ref->{'title'}).'"'.','.
118: '"'.delete($ref->{'author'}).'"'.','.
119: '"'.delete($ref->{'subject'}).'"'.','.
1.12 harris41 120: '"'.$m2.'"'.','.
1.8 harris41 121: '"'.delete($ref->{'keywords'}).'"'.','.
1.9 harris41 122: '"'.'current'.'"'.','.
1.8 harris41 123: '"'.delete($ref->{'notes'}).'"'.','.
124: '"'.delete($ref->{'abstract'}).'"'.','.
125: '"'.delete($ref->{'mime'}).'"'.','.
126: '"'.delete($ref->{'language'}).'"'.','.
1.13 harris41 127: '"'.sqltime(delete($ref->{'creationdate'})).'"'.','.
128: '"'.sqltime(delete($ref->{'lastrevisiondate'})).'"'.','.
1.8 harris41 129: '"'.delete($ref->{'owner'}).'"'.','.
130: '"'.delete($ref->{'copyright'}).'"'.')');
1.1 harris41 131: $sth->execute();
132: }
133:
134: # ----------------------------------------------------------- Clean up database
135: # Need to, perhaps, remove stale SQL database records.
136: # ... not yet implemented
137:
138: # --------------------------------------------------- Close database connection
139: $dbh->disconnect;
140:
141: # ---------------------------------------------------------------- Get metadata
142: # significantly altered from subroutine present in lonnet
143: sub metadata {
144: my ($uri,$what)=@_;
145: my %metacache;
146: $uri=&declutter($uri);
147: my $filename=$uri;
148: $uri=~s/\.meta$//;
149: $uri='';
150: unless ($metacache{$uri.'keys'}) {
151: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
152: my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
153: my $parser=HTML::TokeParser->new(\$metastring);
154: my $token;
155: while ($token=$parser->get_token) {
156: if ($token->[0] eq 'S') {
157: my $entry=$token->[1];
158: my $unikey=$entry;
159: if (defined($token->[2]->{'part'})) {
160: $unikey.='_'.$token->[2]->{'part'};
161: }
162: if (defined($token->[2]->{'name'})) {
163: $unikey.='_'.$token->[2]->{'name'};
164: }
165: if ($metacache{$uri.'keys'}) {
166: $metacache{$uri.'keys'}.=','.$unikey;
167: } else {
168: $metacache{$uri.'keys'}=$unikey;
169: }
170: map {
171: $metacache{$uri.''.$unikey.'.'.$_}=$token->[2]->{$_};
172: } @{$token->[3]};
173: unless (
174: $metacache{$uri.''.$unikey}=$parser->get_text('/'.$entry)
175: ) { $metacache{$uri.''.$unikey}=
176: $metacache{$uri.''.$unikey.'.default'};
177: }
178: }
179: }
180: }
181: return \%metacache;
182: }
183:
184: # ------------------------------------------------------------ Serves up a file
185: # returns either the contents of the file or a -1
186: sub getfile {
187: my $file=shift;
188: if (! -e $file ) { return -1; };
189: my $fh=IO::File->new($file);
190: my $a='';
191: while (<$fh>) { $a .=$_; }
192: return $a
193: }
194:
195: # ------------------------------------------------------------- Declutters URLs
196: sub declutter {
197: my $thisfn=shift;
198: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
199: $thisfn=~s/^\///;
200: $thisfn=~s/^res\///;
201: return $thisfn;
202: }
1.2 harris41 203:
204: # --------------------------------------- Is this the home server of an author?
205: # (copied from lond, modification of the return value)
206: sub ishome {
207: my $author=shift;
208: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
209: my ($udom,$uname)=split(/\//,$author);
210: my $proname=propath($udom,$uname);
211: if (-e $proname) {
212: return 1;
213: } else {
214: return 0;
215: }
216: }
217:
218: # -------------------------------------------- Return path to profile directory
219: # (copied from lond)
220: sub propath {
221: my ($udom,$uname)=@_;
222: $udom=~s/\W//g;
223: $uname=~s/\W//g;
224: my $subdir=$uname.'__';
225: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
226: my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
227: return $proname;
228: }
1.13 harris41 229:
230: # ---------------------------- convert 'time' format into a datetime sql format
231: sub sqltime {
232: my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) =
233: localtime(@_[0]);
1.14 harris41 234: $mon++; $year+=1900;
1.13 harris41 235: return "$year-$mon-$mday $hour:$min:$sec";
236: }
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