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adding the very important DBI module -Scott

    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: use DBI;
   14: 
   15: my @metalist;
   16: # ----------------- Code to enable 'find' subroutine listing of the .meta files
   17: require "find.pl";
   18: sub wanted {
   19:     (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&
   20:     -f _ &&
   21:     /^.*\.meta$/ &&
   22:     push(@metalist,"$dir/$_");
   23: }
   24: 
   25: # ------------------------------------ Read httpd access.conf and get variables
   26: open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf";
   27: 
   28: while ($configline=<CONFIG>) {
   29:     if ($configline =~ /PerlSetVar/) {
   30: 	my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
   31:         chomp($varvalue);
   32:         $perlvar{$varname}=$varvalue;
   33:     }
   34: }
   35: close(CONFIG);
   36: 
   37: my $dbh;
   38: # ------------------------------------- Make sure that database can be accessed
   39: {
   40:     unless (
   41: 	    $dbh = DBI->connect("DBI:mysql:loncapa","www",$perlvar{'lonSqlAccess'},{ RaiseError =>0,PrintError=>0})
   42: 	    ) { 
   43: 	print "Cannot connect to database!\n";
   44: 	exit;
   45:     }
   46: }
   47: 
   48: # ------------------------------------------------------------- get .meta files
   49: opendir(RESOURCES,"$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}");
   50: my @homeusers=grep
   51:           {&ishome("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$_")}
   52:           grep {!/^\.\.?$/} readdir(RESOURCES);
   53: closedir RESOURCES;
   54: foreach my $user (@homeusers) {
   55:     &find("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$user");
   56: }
   57: 
   58: # -- process each file to get metadata and put into search catalog SQL database
   59: foreach my $m (@metalist) {
   60:     my $ref=&metadata($m);
   61:     my $sth=$dbh->prepare('insert into metadata values ('.
   62: 			  delete($ref->{'title'}),
   63: 			  delete($ref->{'author'}).','.
   64: 			  delete($ref->{'subject'}).','.
   65: 			  delete($ref->{'url'}).','.
   66: 			  delete($ref->{'keywords'}).','.
   67: 			  delete($ref->{'version'}).','.
   68: 			  delete($ref->{'notes'}).','.
   69: 			  delete($ref->{'abstract'}).','.
   70: 			  delete($ref->{'mime'}).','.
   71: 			  delete($ref->{'language'}).','.
   72: 			  delete($ref->{'creationdate'}).','.
   73: 			  delete($ref->{'lastrevisiondate'}).','.
   74: 			  delete($ref->{'owner'}).','.
   75: 			  delete($ref->{'copyright'}));
   76:     $sth->execute();
   77: }
   78: 
   79: # ----------------------------------------------------------- Clean up database
   80: # Need to, perhaps, remove stale SQL database records.
   81: # ... not yet implemented
   82: 
   83: # --------------------------------------------------- Close database connection
   84: $dbh->disconnect;
   85: 
   86: # ---------------------------------------------------------------- Get metadata
   87: # significantly altered from subroutine present in lonnet
   88: sub metadata {
   89:     my ($uri,$what)=@_;
   90:     my %metacache;
   91:     $uri=&declutter($uri);
   92:     my $filename=$uri;
   93:     $uri=~s/\.meta$//;
   94:     $uri='';
   95:     unless ($metacache{$uri.'keys'}) {
   96:         unless ($filename=~/\.meta$/) { $filename.='.meta'; }
   97: 	my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
   98:         my $parser=HTML::TokeParser->new(\$metastring);
   99:         my $token;
  100:         while ($token=$parser->get_token) {
  101:            if ($token->[0] eq 'S') {
  102: 	      my $entry=$token->[1];
  103:               my $unikey=$entry;
  104:               if (defined($token->[2]->{'part'})) { 
  105:                  $unikey.='_'.$token->[2]->{'part'}; 
  106: 	      }
  107:               if (defined($token->[2]->{'name'})) { 
  108:                  $unikey.='_'.$token->[2]->{'name'}; 
  109: 	      }
  110:               if ($metacache{$uri.'keys'}) {
  111:                  $metacache{$uri.'keys'}.=','.$unikey;
  112:               } else {
  113:                  $metacache{$uri.'keys'}=$unikey;
  114: 	      }
  115:               map {
  116: 		  $metacache{$uri.''.$unikey.'.'.$_}=$token->[2]->{$_};
  117:               } @{$token->[3]};
  118:               unless (
  119:                  $metacache{$uri.''.$unikey}=$parser->get_text('/'.$entry)
  120: 		      ) { $metacache{$uri.''.$unikey}=
  121: 			      $metacache{$uri.''.$unikey.'.default'};
  122: 		      }
  123:           }
  124:        }
  125:     }
  126:     return \%metacache;
  127: }
  128: 
  129: # ------------------------------------------------------------ Serves up a file
  130: # returns either the contents of the file or a -1
  131: sub getfile {
  132:   my $file=shift;
  133:   if (! -e $file ) { return -1; };
  134:   my $fh=IO::File->new($file);
  135:   my $a='';
  136:   while (<$fh>) { $a .=$_; }
  137:   return $a
  138: }
  139: 
  140: # ------------------------------------------------------------- Declutters URLs
  141: sub declutter {
  142:     my $thisfn=shift;
  143:     $thisfn=~s/^$perlvar{'lonDocRoot'}//;
  144:     $thisfn=~s/^\///;
  145:     $thisfn=~s/^res\///;
  146:     return $thisfn;
  147: }
  148: 
  149: # --------------------------------------- Is this the home server of an author?
  150: # (copied from lond, modification of the return value)
  151: sub ishome {
  152:     my $author=shift;
  153:     $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
  154:     my ($udom,$uname)=split(/\//,$author);
  155:     my $proname=propath($udom,$uname);
  156:     if (-e $proname) {
  157: 	return 1;
  158:     } else {
  159:         return 0;
  160:     }
  161: }
  162: 
  163: # -------------------------------------------- Return path to profile directory
  164: # (copied from lond)
  165: sub propath {
  166:     my ($udom,$uname)=@_;
  167:     $udom=~s/\W//g;
  168:     $uname=~s/\W//g;
  169:     my $subdir=$uname.'__';
  170:     $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
  171:     my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
  172:     return $proname;
  173: }