Return to searchcat.pl CVS log

Up to [LON-CAPA] / loncom / metadata_database

Annotation of loncom/metadata_database/searchcat.pl, revision 1.5

1.1       harris41    1: #!/usr/bin/perl
                      2: # The LearningOnline Network
                      3: # searchcat.pl "Search Catalog" batch script
                      4: 
                      5: # 04/14/2001 Scott Harrison
                      6: 
                      7: # This script goes through a LON-CAPA resource
                      8: # directory and gathers metadata.
                      9: # The metadata is entered into a SQL database.
                     10: 
                     11: use IO::File;
                     12: use HTML::TokeParser;
                     13: 
                     14: my @metalist;
                     15: # ----------------- Code to enable 'find' subroutine listing of the .meta files
                     16: require "find.pl";
                     17: sub wanted {
                     18:     (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&
                     19:     -f _ &&
                     20:     /^.*\.meta$/ &&
                     21:     push(@metalist,"$dir/$_");
                     22: }
                     23: 
                     24: # ------------------------------------ Read httpd access.conf and get variables
                     25: open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf";
                     26: 
                     27: while ($configline=<CONFIG>) {
                     28:     if ($configline =~ /PerlSetVar/) {
                     29: 	my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
                     30:         chomp($varvalue);
                     31:         $perlvar{$varname}=$varvalue;
                     32:     }
                     33: }
                     34: close(CONFIG);
                     35: 
1.3       harris41   36: my $dbh;
1.1       harris41   37: # ------------------------------------- Make sure that database can be accessed
                     38: {
                     39:     unless (
                     40: 	    $dbh = DBI->connect("DBI:mysql:loncapa","www",$perlvar{'lonSqlAccess'},{ RaiseError =>0,PrintError=>0})
                     41: 	    ) { 
                     42: 	print "Cannot connect to database!\n";
                     43: 	exit;
                     44:     }
                     45: }
                     46: 
                     47: # ------------------------------------------------------------- get .meta files
1.2       harris41   48: opendir(RESOURCES,"$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}");
                     49: my @homeusers=grep
                     50:           {&ishome("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$_")}
                     51:           grep {!/^\.\.?$/} readdir(RESOURCES);
                     52: closedir RESOURCES;
                     53: foreach my $user (@homeusers) {
                     54:     &find("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$user");
                     55: }
1.1       harris41   56: 
                     57: # -- process each file to get metadata and put into search catalog SQL database
                     58: foreach my $m (@metalist) {
                     59:     my $ref=&metadata($m);
                     60:     my $sth=$dbh->prepare('insert into metadata values ('.
                     61: 			  delete($ref->{'title'}),
                     62: 			  delete($ref->{'author'}).','.
                     63: 			  delete($ref->{'subject'}).','.
                     64: 			  delete($ref->{'url'}).','.
                     65: 			  delete($ref->{'keywords'}).','.
                     66: 			  delete($ref->{'version'}).','.
                     67: 			  delete($ref->{'notes'}).','.
                     68: 			  delete($ref->{'abstract'}).','.
                     69: 			  delete($ref->{'mime'}).','.
                     70: 			  delete($ref->{'language'}).','.
                     71: 			  delete($ref->{'creationdate'}).','.
                     72: 			  delete($ref->{'lastrevisiondate'}).','.
                     73: 			  delete($ref->{'owner'}).','.
1.5     ! harris41   74: 			  delete($ref->{'copyright'}));
1.1       harris41   75:     $sth->execute();
                     76: }
                     77: 
                     78: # ----------------------------------------------------------- Clean up database
                     79: # Need to, perhaps, remove stale SQL database records.
                     80: # ... not yet implemented
                     81: 
                     82: # --------------------------------------------------- Close database connection
                     83: $dbh->disconnect;
                     84: 
                     85: # ---------------------------------------------------------------- Get metadata
                     86: # significantly altered from subroutine present in lonnet
                     87: sub metadata {
                     88:     my ($uri,$what)=@_;
                     89:     my %metacache;
                     90:     $uri=&declutter($uri);
                     91:     my $filename=$uri;
                     92:     $uri=~s/\.meta$//;
                     93:     $uri='';
                     94:     unless ($metacache{$uri.'keys'}) {
                     95:         unless ($filename=~/\.meta$/) { $filename.='.meta'; }
                     96: 	my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
                     97:         my $parser=HTML::TokeParser->new(\$metastring);
                     98:         my $token;
                     99:         while ($token=$parser->get_token) {
                    100:            if ($token->[0] eq 'S') {
                    101: 	      my $entry=$token->[1];
                    102:               my $unikey=$entry;
                    103:               if (defined($token->[2]->{'part'})) { 
                    104:                  $unikey.='_'.$token->[2]->{'part'}; 
                    105: 	      }
                    106:               if (defined($token->[2]->{'name'})) { 
                    107:                  $unikey.='_'.$token->[2]->{'name'}; 
                    108: 	      }
                    109:               if ($metacache{$uri.'keys'}) {
                    110:                  $metacache{$uri.'keys'}.=','.$unikey;
                    111:               } else {
                    112:                  $metacache{$uri.'keys'}=$unikey;
                    113: 	      }
                    114:               map {
                    115: 		  $metacache{$uri.''.$unikey.'.'.$_}=$token->[2]->{$_};
                    116:               } @{$token->[3]};
                    117:               unless (
                    118:                  $metacache{$uri.''.$unikey}=$parser->get_text('/'.$entry)
                    119: 		      ) { $metacache{$uri.''.$unikey}=
                    120: 			      $metacache{$uri.''.$unikey.'.default'};
                    121: 		      }
                    122:           }
                    123:        }
                    124:     }
                    125:     return \%metacache;
                    126: }
                    127: 
                    128: # ------------------------------------------------------------ Serves up a file
                    129: # returns either the contents of the file or a -1
                    130: sub getfile {
                    131:   my $file=shift;
                    132:   if (! -e $file ) { return -1; };
                    133:   my $fh=IO::File->new($file);
                    134:   my $a='';
                    135:   while (<$fh>) { $a .=$_; }
                    136:   return $a
                    137: }
                    138: 
                    139: # ------------------------------------------------------------- Declutters URLs
                    140: sub declutter {
                    141:     my $thisfn=shift;
                    142:     $thisfn=~s/^$perlvar{'lonDocRoot'}//;
                    143:     $thisfn=~s/^\///;
                    144:     $thisfn=~s/^res\///;
                    145:     return $thisfn;
                    146: }
1.2       harris41  147: 
                    148: # --------------------------------------- Is this the home server of an author?
                    149: # (copied from lond, modification of the return value)
                    150: sub ishome {
                    151:     my $author=shift;
                    152:     $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
                    153:     my ($udom,$uname)=split(/\//,$author);
                    154:     my $proname=propath($udom,$uname);
                    155:     if (-e $proname) {
                    156: 	return 1;
                    157:     } else {
                    158:         return 0;
                    159:     }
                    160: }
                    161: 
                    162: # -------------------------------------------- Return path to profile directory
                    163: # (copied from lond)
                    164: sub propath {
                    165:     my ($udom,$uname)=@_;
                    166:     $udom=~s/\W//g;
                    167:     $uname=~s/\W//g;
                    168:     my $subdir=$uname.'__';
                    169:     $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
                    170:     my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
                    171:     return $proname;
                    172: }