1 |
joko |
1.1 |
## ------------------------------------------------------------------------ |
2 |
|
|
## $Id$ |
3 |
|
|
## ------------------------------------------------------------------------ |
4 |
|
|
## $Log$ |
5 |
|
|
## ------------------------------------------------------------------------ |
6 |
|
|
|
7 |
|
|
|
8 |
|
|
package Data::Filter; |
9 |
|
|
|
10 |
|
|
use strict; |
11 |
|
|
use warnings; |
12 |
|
|
|
13 |
|
|
use base 'DesignPattern::Object::Logger'; |
14 |
|
|
|
15 |
|
|
|
16 |
|
|
use Data::Dumper; |
17 |
|
|
|
18 |
|
|
use Regexp::Group; |
19 |
|
|
use libp qw( mkObject ); |
20 |
|
|
use Data::Compare::Struct qw( isEmpty ); |
21 |
|
|
|
22 |
|
|
# ------------ common perl object constructor ------------ |
23 |
|
|
sub new { |
24 |
|
|
my $invocant = shift; |
25 |
|
|
my $class = ref($invocant) || $invocant; |
26 |
|
|
my @args = (); |
27 |
|
|
@_ && (@args = @_); |
28 |
|
|
#$logger->debug( __PACKAGE__ . "->new( @args )" ); # this is not "common"! |
29 |
|
|
my $self = { @_ }; |
30 |
|
|
bless $self, $class; |
31 |
|
|
$self->{caller} = caller; |
32 |
|
|
|
33 |
|
|
#print Dumper(caller(2)); |
34 |
|
|
#exit; |
35 |
|
|
|
36 |
|
|
$self->_init(); |
37 |
|
|
return $self; |
38 |
|
|
} |
39 |
|
|
|
40 |
|
|
sub _init { |
41 |
|
|
my $self = shift; |
42 |
|
|
|
43 |
|
|
# try to load filter-declaration from configuration scope inside perl-module (yes - it's already abstracted out there!) |
44 |
|
|
$self->{declaration} = mkObject($self->{module}); |
45 |
|
|
#print Dumper($self->{declaration}); |
46 |
|
|
|
47 |
|
|
|
48 |
|
|
# the regexp-object which does the hard work for us ;-) |
49 |
|
|
$self->{regexp} = Regexp::Group->new( |
50 |
|
|
'data' => \$self->{data}, # reference ... |
51 |
|
|
#'data' => $self->{data}, # ... or not? |
52 |
|
|
'metadata' => $self->{declaration}->metadata(), |
53 |
|
|
'patterns' => $self->{declaration}->patterns(), |
54 |
|
|
'coderefs' => $self->{declaration}->coderefs(), |
55 |
|
|
'verbose' => 1, |
56 |
|
|
); |
57 |
|
|
|
58 |
|
|
} |
59 |
|
|
|
60 |
|
|
sub run { |
61 |
|
|
my $self = shift; |
62 |
|
|
my $steps = shift; |
63 |
|
|
my $coderef = shift; |
64 |
|
|
|
65 |
|
|
#print "cb: $coderef", "\n"; |
66 |
|
|
|
67 |
|
|
my $result = $self->{regexp}->scan($steps, $coderef); |
68 |
|
|
|
69 |
|
|
# configure tracing |
70 |
|
|
# respects additional trace-options passed to _trace-method |
71 |
|
|
$self->{TRACE_OPTIONS} = 1; |
72 |
|
|
# disables _any_ tracing - even if sub-conditions evaluate to true values |
73 |
|
|
$self->{TRACE_DISABLED} = 0; |
74 |
|
|
|
75 |
|
|
# trace the result |
76 |
|
|
# cute: ;-) |
77 |
|
|
#$self->trace('matches after Regexp::Group->scan', $self->{regexp}->getMatches(), 1, undef, { tag => '', exit => 0 }); |
78 |
|
|
#$self->trace('results after Regexp::Group->scan', $self->{regexp}->getResults(), 1, undef, { tag => '', exit => 0 }); |
79 |
|
|
|
80 |
|
|
return $result; |
81 |
|
|
} |
82 |
|
|
|
83 |
|
|
sub index { |
84 |
|
|
my $self = shift; |
85 |
|
|
my $steps = shift; |
86 |
|
|
|
87 |
|
|
# configure tracing |
88 |
|
|
# respects additional trace-options passed to _trace-method |
89 |
|
|
$self->{TRACE_OPTIONS} = 1; |
90 |
|
|
# disables _any_ tracing - even if sub-conditions evaluate to true values |
91 |
|
|
$self->{TRACE_DISABLED} = 0; |
92 |
|
|
|
93 |
|
|
# trace the result |
94 |
|
|
# cute: ;-) |
95 |
|
|
#$self->trace('matches after Regexp::Group->scan', $self->{regexp}->getMatches(), 1, undef, { tag => '', exit => 0 }); |
96 |
|
|
#$self->trace('results after Regexp::Group->scan', $self->{regexp}->getResults(), 1, undef, { tag => '', exit => 0 }); |
97 |
|
|
|
98 |
|
|
my $result = $self->{regexp}->scan($steps); |
99 |
|
|
|
100 |
|
|
|
101 |
|
|
return $result; |
102 |
|
|
} |
103 |
|
|
|
104 |
|
|
sub continue { |
105 |
|
|
my $self = shift; |
106 |
|
|
my $scankey = shift; |
107 |
|
|
my $result = $self->{regexp}->continue($scankey); |
108 |
|
|
} |
109 |
|
|
|
110 |
|
|
sub getResults { |
111 |
|
|
my $self = shift; |
112 |
|
|
return $self->{regexp}->{result}; |
113 |
|
|
} |
114 |
|
|
|
115 |
|
|
sub getResultCount { |
116 |
|
|
my $self = shift; |
117 |
|
|
#my $count = ($#{$self->{regexp}->{result}} == -1 ? 0 : $#{$self->{regexp}->{result}}); |
118 |
|
|
#$count++; |
119 |
|
|
|
120 |
|
|
|
121 |
|
|
my $matches = $self->{regexp}->getMatches(); |
122 |
|
|
return if isEmpty($matches); |
123 |
|
|
|
124 |
|
|
my $count = $#{$matches}; |
125 |
|
|
$count++; |
126 |
|
|
return $count; |
127 |
|
|
} |
128 |
|
|
|
129 |
|
|
1; |