Annotation of loncom/metadata_database/searchcat.pl, revision 1.21
1.1 harris41 1: #!/usr/bin/perl
2: # The LearningOnline Network
3: # searchcat.pl "Search Catalog" batch script
1.16 harris41 4: #
1.21 ! www 5: # $Id: searchcat.pl,v 1.20 2002/09/09 14:00:24 harris41 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;
1.21 ! www 47: use GDBM_File;
1.1 harris41 48:
49: my @metalist;
1.21 ! www 50:
! 51:
! 52: # ----------------------------------------------------- Un-Escape Special Chars
! 53:
! 54: sub unescape {
! 55: my $str=shift;
! 56: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
! 57: return $str;
! 58: }
! 59:
! 60:
! 61: # ------------------------------------------- Code to evaluate dynamic metadata
! 62:
! 63: sub dynamicmeta {
! 64: #
! 65: #
! 66: # Do nothing for now ...
! 67: #
! 68: #
! 69: return;
! 70: #
! 71: # ..., but stuff below already works
! 72: #
! 73: my $url=&declutter(shift);
! 74: $url=~s/\.meta$//;
! 75: my %returnhash=();
! 76: my ($adomain,$aauthor)=($url=~/^(\w+)\/(\w+)\//);
! 77: my $prodir=&propath($adomain,$aauthor);
! 78: if (tie(%evaldata,'GDBM_File',
! 79: $prodir.'/nohist_resevaldata.db',&GDBM_READER,0640)) {
! 80: my %sum=();
! 81: my %cnt=();
! 82: my %listitems=('count' => 'add',
! 83: 'course' => 'add',
! 84: 'avetries' => 'avg',
! 85: 'stdno' => 'add',
! 86: 'difficulty' => 'avg',
! 87: 'clear' => 'avg',
! 88: 'technical' => 'avg',
! 89: 'helpful' => 'avg',
! 90: 'correct' => 'avg',
! 91: 'depth' => 'avg',
! 92: 'comments' => 'app',
! 93: 'usage' => 'cnt'
! 94: );
! 95: my $regexp=$url;
! 96: $regexp=~s/(\W)/\\$1/g;
! 97: $regexp='___'.$regexp.'___([a-z]+)$';
! 98: foreach (keys %evaldata) {
! 99: my $key=&unescape($_);
! 100: if ($key=~/$regexp/) {
! 101: if (defined($cnt{$1})) { $cnt{$1}++; } else { $cnt{$1}=1; }
! 102: unless ($listitems{$1} eq 'app') {
! 103: if (defined($sum{$1})) {
! 104: $sum{$1}+=$evaldata{$_};
! 105: } else {
! 106: $sum{$1}=$evaldata{$_};
! 107: }
! 108: } else {
! 109: if (defined($sum{$1})) {
! 110: if ($evaldata{$_}) {
! 111: $sum{$1}.='<hr>'.$evaldata{$_};
! 112: }
! 113: } else {
! 114: $sum{$1}=''.$evaldata{$_};
! 115: }
! 116: }
! 117: }
! 118: foreach (keys %cnt) {
! 119: if ($listitems{$_} eq 'avg') {
! 120: $returnhash{$_}=int(($sum{$_}/$cnt{$_})*100.0+0.5)/100.0;
! 121: } elsif ($listitems{$_} eq 'cnt') {
! 122: $returnhash{$_}=$cnt{$_};
! 123: } else {
! 124: $returnhash{$_}=$sum{$_};
! 125: }
! 126: }
! 127: }
! 128: untie(%evaldata);
! 129: }
! 130: return %returnhash;
! 131: }
! 132:
1.1 harris41 133: # ----------------- Code to enable 'find' subroutine listing of the .meta files
134: require "find.pl";
135: sub wanted {
136: (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&
137: -f _ &&
1.10 harris41 138: /^.*\.meta$/ && !/^.+\.\d+\.[^\.]+\.meta$/ &&
1.1 harris41 139: push(@metalist,"$dir/$_");
140: }
141:
1.18 matthew 142: # --------------- Read loncapa_apache.conf and loncapa.conf and get variables
1.20 harris41 143: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.17 harris41 144: my %perlvar=%{$perlvarref};
145: undef $perlvarref; # remove since sensitive and not needed
146: delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
1.15 harris41 147:
148: # ------------------------------------- Only run if machine is a library server
149: exit unless $perlvar{'lonRole'} eq 'library';
1.1 harris41 150:
1.3 harris41 151: my $dbh;
1.1 harris41 152: # ------------------------------------- Make sure that database can be accessed
153: {
154: unless (
155: $dbh = DBI->connect("DBI:mysql:loncapa","www",$perlvar{'lonSqlAccess'},{ RaiseError =>0,PrintError=>0})
156: ) {
157: print "Cannot connect to database!\n";
158: exit;
159: }
1.19 matthew 160: my $make_metadata_table = "CREATE TABLE IF NOT EXISTS metadata (".
161: "title TEXT, author TEXT, subject TEXT, url TEXT, keywords TEXT, ".
162: "version TEXT, notes TEXT, abstract TEXT, mime TEXT, language TEXT, ".
163: "creationdate DATETIME, lastrevisiondate DATETIME, owner TEXT, ".
164: "copyright TEXT, FULLTEXT idx_title (title), ".
165: "FULLTEXT idx_author (author), FULLTEXT idx_subject (subject), ".
166: "FULLTEXT idx_url (url), FULLTEXT idx_keywords (keywords), ".
167: "FULLTEXT idx_version (version), FULLTEXT idx_notes (notes), ".
168: "FULLTEXT idx_abstract (abstract), FULLTEXT idx_mime (mime), ".
169: "FULLTEXT idx_language (language), FULLTEXT idx_owner (owner), ".
170: "FULLTEXT idx_copyright (copyright)) TYPE=MYISAM";
171: # It would sure be nice to have some logging mechanism.
172: $dbh->do($make_metadata_table);
1.1 harris41 173: }
174:
175: # ------------------------------------------------------------- get .meta files
1.2 harris41 176: opendir(RESOURCES,"$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}");
177: my @homeusers=grep
178: {&ishome("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$_")}
179: grep {!/^\.\.?$/} readdir(RESOURCES);
180: closedir RESOURCES;
181: foreach my $user (@homeusers) {
182: &find("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$user");
183: }
1.1 harris41 184:
185: # -- process each file to get metadata and put into search catalog SQL database
1.9 harris41 186: # Also, check to see if already there.
1.11 harris41 187: # I could just delete (without searching first), but this works for now.
1.1 harris41 188: foreach my $m (@metalist) {
189: my $ref=&metadata($m);
1.11 harris41 190: my $m2='/res/'.&declutter($m);
1.12 harris41 191: $m2=~s/\.meta$//;
1.21 ! www 192: &dynamicmeta($m2);
1.12 harris41 193: my $q2="select * from metadata where url like binary '$m2'";
1.9 harris41 194: my $sth = $dbh->prepare($q2);
195: $sth->execute();
196: my $r1=$sth->fetchall_arrayref;
197: if (@$r1) {
1.12 harris41 198: $sth=$dbh->prepare("delete from metadata where url like binary '$m2'");
1.9 harris41 199: $sth->execute();
200: }
201: $sth=$dbh->prepare('insert into metadata values ('.
1.8 harris41 202: '"'.delete($ref->{'title'}).'"'.','.
203: '"'.delete($ref->{'author'}).'"'.','.
204: '"'.delete($ref->{'subject'}).'"'.','.
1.12 harris41 205: '"'.$m2.'"'.','.
1.8 harris41 206: '"'.delete($ref->{'keywords'}).'"'.','.
1.9 harris41 207: '"'.'current'.'"'.','.
1.8 harris41 208: '"'.delete($ref->{'notes'}).'"'.','.
209: '"'.delete($ref->{'abstract'}).'"'.','.
210: '"'.delete($ref->{'mime'}).'"'.','.
211: '"'.delete($ref->{'language'}).'"'.','.
1.13 harris41 212: '"'.sqltime(delete($ref->{'creationdate'})).'"'.','.
213: '"'.sqltime(delete($ref->{'lastrevisiondate'})).'"'.','.
1.8 harris41 214: '"'.delete($ref->{'owner'}).'"'.','.
215: '"'.delete($ref->{'copyright'}).'"'.')');
1.1 harris41 216: $sth->execute();
217: }
218:
219: # ----------------------------------------------------------- Clean up database
220: # Need to, perhaps, remove stale SQL database records.
221: # ... not yet implemented
222:
223: # --------------------------------------------------- Close database connection
224: $dbh->disconnect;
225:
226: # ---------------------------------------------------------------- Get metadata
227: # significantly altered from subroutine present in lonnet
228: sub metadata {
229: my ($uri,$what)=@_;
230: my %metacache;
231: $uri=&declutter($uri);
232: my $filename=$uri;
233: $uri=~s/\.meta$//;
234: $uri='';
235: unless ($metacache{$uri.'keys'}) {
236: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
237: my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
238: my $parser=HTML::TokeParser->new(\$metastring);
239: my $token;
240: while ($token=$parser->get_token) {
241: if ($token->[0] eq 'S') {
242: my $entry=$token->[1];
243: my $unikey=$entry;
244: if (defined($token->[2]->{'part'})) {
245: $unikey.='_'.$token->[2]->{'part'};
246: }
247: if (defined($token->[2]->{'name'})) {
248: $unikey.='_'.$token->[2]->{'name'};
249: }
250: if ($metacache{$uri.'keys'}) {
251: $metacache{$uri.'keys'}.=','.$unikey;
252: } else {
253: $metacache{$uri.'keys'}=$unikey;
254: }
255: map {
256: $metacache{$uri.''.$unikey.'.'.$_}=$token->[2]->{$_};
257: } @{$token->[3]};
258: unless (
259: $metacache{$uri.''.$unikey}=$parser->get_text('/'.$entry)
260: ) { $metacache{$uri.''.$unikey}=
261: $metacache{$uri.''.$unikey.'.default'};
262: }
263: }
264: }
265: }
266: return \%metacache;
267: }
268:
269: # ------------------------------------------------------------ Serves up a file
270: # returns either the contents of the file or a -1
271: sub getfile {
272: my $file=shift;
273: if (! -e $file ) { return -1; };
274: my $fh=IO::File->new($file);
275: my $a='';
276: while (<$fh>) { $a .=$_; }
277: return $a
278: }
279:
280: # ------------------------------------------------------------- Declutters URLs
281: sub declutter {
282: my $thisfn=shift;
283: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
284: $thisfn=~s/^\///;
285: $thisfn=~s/^res\///;
286: return $thisfn;
287: }
1.2 harris41 288:
289: # --------------------------------------- Is this the home server of an author?
290: # (copied from lond, modification of the return value)
291: sub ishome {
292: my $author=shift;
293: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
294: my ($udom,$uname)=split(/\//,$author);
295: my $proname=propath($udom,$uname);
296: if (-e $proname) {
297: return 1;
298: } else {
299: return 0;
300: }
301: }
302:
303: # -------------------------------------------- Return path to profile directory
304: # (copied from lond)
305: sub propath {
306: my ($udom,$uname)=@_;
307: $udom=~s/\W//g;
308: $uname=~s/\W//g;
309: my $subdir=$uname.'__';
310: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
311: my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
312: return $proname;
313: }
1.13 harris41 314:
315: # ---------------------------- convert 'time' format into a datetime sql format
316: sub sqltime {
317: my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) =
318: localtime(@_[0]);
1.14 harris41 319: $mon++; $year+=1900;
1.13 harris41 320: return "$year-$mon-$mday $hour:$min:$sec";
321: }
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