1 |
#!/usr/bin/perl |
2 |
|
3 |
## ------------------------------------------------------------------------ |
4 |
## $Id: File.pm,v 1.4 2003/02/11 05:15:45 joko Exp $ |
5 |
## ------------------------------------------------------------------------ |
6 |
## $Log: File.pm,v $ |
7 |
## Revision 1.4 2003/02/11 05:15:45 joko |
8 |
## - no Exporter any more |
9 |
## |
10 |
## Revision 1.3 2003/02/09 04:54:27 joko |
11 |
## - refactored lots of code to Data::Storage::Handler::File::Basic |
12 |
## - sorry! |
13 |
## |
14 |
## ------------------------------------------------------------------------ |
15 |
|
16 |
|
17 |
package Data::Storage::Handler::File; |
18 |
|
19 |
use strict; |
20 |
use warnings; |
21 |
|
22 |
use base qw( DesignPattern::Object ); |
23 |
|
24 |
|
25 |
use Data::Storage::Handler::File::Basic qw( s2f a2f f2s ); |
26 |
|
27 |
sub constructor { |
28 |
my $self = shift; |
29 |
# patch - backward compatibility |
30 |
if (!$self->{filename} && $self->{path}) { |
31 |
$self->{filename} = $self->{path}; |
32 |
} |
33 |
} |
34 |
|
35 |
sub _stat { |
36 |
my $self = shift; |
37 |
if (-e $self->{filename}) { |
38 |
$self->{_meta}->{exists} = 1; |
39 |
} else { |
40 |
$self->{_meta}->{exists} = 0; |
41 |
} |
42 |
} |
43 |
|
44 |
sub _read { |
45 |
my $self = shift; |
46 |
$self->_stat(); |
47 |
if ($self->exists()) { |
48 |
$self->{_buffer} = f2s($self->{filename}); |
49 |
} |
50 |
#$self->{_buffer_orig} = f2s($self->{filename}); |
51 |
} |
52 |
|
53 |
sub toString { |
54 |
my $self = shift; |
55 |
$self->_read(); |
56 |
return $self->{_buffer}; |
57 |
} |
58 |
|
59 |
sub addSuffix { |
60 |
my $self = shift; |
61 |
my $suffix = shift; |
62 |
$self->{filename} .= ".$suffix"; |
63 |
} |
64 |
|
65 |
sub save { |
66 |
my $self = shift; |
67 |
if ($self->{_buffer}) { |
68 |
s2f($self->{filename}, $self->{_buffer}); |
69 |
} else { |
70 |
print "please load $self->{filename} before saving.", "\n"; |
71 |
} |
72 |
} |
73 |
|
74 |
sub backup { |
75 |
my $self = shift; |
76 |
my $options = shift; |
77 |
my $path = $self->{filename}; |
78 |
$path .= '.' . $options->{suffix} if $options->{suffix}; |
79 |
s2f($path, $self->{_buffer_orig}); |
80 |
} |
81 |
|
82 |
sub matches { |
83 |
my $self = shift; |
84 |
my $pattern = shift; |
85 |
$self->_read(); |
86 |
my $eval = '$self->{_buffer} =~ ' . $pattern . ';'; |
87 |
if (eval($eval)) { return 1; } |
88 |
} |
89 |
|
90 |
sub exists { |
91 |
my $self = shift; |
92 |
$self->_stat(); |
93 |
return $self->{_meta}->{exists}; |
94 |
} |
95 |
|
96 |
1; |
97 |
__END__ |