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#
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# URLcache.pm
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#
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# Originally Written by Christopher Williams
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#
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# Description
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# -----------
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# Simple url->file lookup
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#
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# Interface
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# ---------
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# new(cachedir) : A new URLcache object
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# store(url,file) : store a url/file combination
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# file(url) : retunr the file for a given url or "" if not there
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# delete(url) : remove from cache url
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# clear() : clear cache
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package URL::URLcache;
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require 5.004;
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use Utilities::HashDB;
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sub new {
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my $class=shift;
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$self={};
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bless $self, $class;
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$self->init(@_);
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return $self;
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}
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sub init {
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my $self=shift;
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$self->{cachedir}=shift;
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$self->{cacheindex}=$self->{cachedir}."/index.db";
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$self->{urlDB}=Utilities::HashDB->new();
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if ( -f $self->{cacheindex} ) {
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$self->{urlDB}->restore($self->{cacheindex});
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}
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else {
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AddDir::adddir($self->{cachedir});
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}
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}
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sub file {
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my $self=shift;
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my $url=shift;
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my $found;
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($found)=$self->{urlDB}->getdata($url);
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return ( ($found eq "")?"":$found);
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}
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sub delete {
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my $self=shift;
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my $url=shift;
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$self->{urlDB}->deletedata($url);
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$self->{urlDB}->store($self->{cacheindex});
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}
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sub store {
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my $self=shift;
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my $url=shift;
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my $file=shift;
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$self->{urlDB}->deletedata($url);
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$self->{urlDB}->setdata($file,$url);
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$self->{urlDB}->store($self->{cacheindex});
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}
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sub clear {
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my $self=shift;
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unlink $self->{cacheindex};
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}
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