| 5 |
|
# |
| 6 |
|
# Description |
| 7 |
|
# ----------- |
| 8 |
< |
# Simple url->file lookup |
| 8 |
> |
# Simple url->file lookup (persistent) |
| 9 |
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# |
| 10 |
|
# Interface |
| 11 |
|
# --------- |
| 12 |
< |
# new(cachedir) : A new URLcache object |
| 12 |
> |
# new(cachedir) : A new URLcache object in a given directory |
| 13 |
|
# store(url,file) : store a url/file combination |
| 14 |
< |
# file(url) : retunr the file for a given url or "" if not there |
| 14 |
> |
# file(url) : return the file for a given url |
| 15 |
|
# delete(url) : remove from cache url |
| 16 |
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# clear() : clear cache |
| 17 |
+ |
# filestore() : Return the directory to download files to |
| 18 |
+ |
# filename(url) : return a unique file/dir in cache for the given url |
| 19 |
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|
| 20 |
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package URL::URLcache; |
| 21 |
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require 5.004; |
| 29 |
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return $self; |
| 30 |
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} |
| 31 |
|
|
| 32 |
+ |
sub filestore { |
| 33 |
+ |
my $self=shift; |
| 34 |
+ |
return $self->{cachedir}; |
| 35 |
+ |
} |
| 36 |
+ |
|
| 37 |
+ |
sub filename { |
| 38 |
+ |
my $self=shift; |
| 39 |
+ |
my $url=shift; |
| 40 |
+ |
|
| 41 |
+ |
my $filenumber; |
| 42 |
+ |
|
| 43 |
+ |
my $file=$self->file($url); |
| 44 |
+ |
if ( $file eq "" ) { |
| 45 |
+ |
# need to generate a new filename - a random number will do |
| 46 |
+ |
srand(); |
| 47 |
+ |
do { |
| 48 |
+ |
$filenumber=int(rand 9999999)+1; |
| 49 |
+ |
$file=$self->filestore()."/".$filenumber; |
| 50 |
+ |
} until ( ! ( -e $file ) ); |
| 51 |
+ |
} |
| 52 |
+ |
return $file; |
| 53 |
+ |
} |
| 54 |
+ |
|
| 55 |
|
sub init { |
| 56 |
|
my $self=shift; |
| 57 |
< |
$self->{cachedir}=shift; |
| 57 |
> |
$self->{cachetop}=shift; |
| 58 |
> |
$self->{cachedir}=$self->{cachetop}."/files"; |
| 59 |
> |
AddDir::adddir($self->{cachedir}); |
| 60 |
|
|
| 61 |
< |
$self->{cacheindex}=$self->{cachedir}."/index.db"; |
| 61 |
> |
$self->{cacheindex}=$self->{cachetop}."/index.db"; |
| 62 |
|
$self->{urlDB}=Utilities::HashDB->new(); |
| 63 |
|
if ( -f $self->{cacheindex} ) { |
| 64 |
|
$self->{urlDB}->restore($self->{cacheindex}); |
| 72 |
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my $self=shift; |
| 73 |
|
my $url=shift; |
| 74 |
|
|
| 75 |
< |
my $found; |
| 76 |
< |
($found)=$self->{urlDB}->getdata($url); |
| 50 |
< |
return ( ($found eq "")?"":$found); |
| 75 |
> |
my @found=$self->{urlDB}->getdata($url); |
| 76 |
> |
return ( ($#found == -1)?"":$found[0]); |
| 77 |
|
} |
| 78 |
|
|
| 79 |
|
sub delete { |
| 80 |
|
my $self=shift; |
| 81 |
|
my $url=shift; |
| 82 |
+ |
unlink ($self->{urlDB}->getdata($URL)); |
| 83 |
|
$self->{urlDB}->deletedata($url); |
| 84 |
|
$self->{urlDB}->store($self->{cacheindex}); |
| 85 |
|
} |
| 96 |
|
|
| 97 |
|
sub clear { |
| 98 |
|
my $self=shift; |
| 99 |
< |
unlink $self->{cacheindex}; |
| 99 |
> |
foreach $item ( $self->{urlDB}->match() ) { |
| 100 |
> |
$self->delete($item->keys()); |
| 101 |
> |
} |
| 102 |
|
} |
