1 |
## ------------------------------------------------------------------------ |
2 |
## $Id: Regexp.pm,v 1.3 2003/02/20 18:56:41 joko Exp $ |
3 |
## ------------------------------------------------------------------------ |
4 |
## $Log: Regexp.pm,v $ |
5 |
## Revision 1.3 2003/02/20 18:56:41 joko |
6 |
## renamed modules |
7 |
## |
8 |
## Revision 1.2 2003/02/09 04:53:23 joko |
9 |
## + object creation done via new mechanism |
10 |
## |
11 |
## Revision 1.1 2002/12/23 04:22:22 joko |
12 |
## + refactored from Data::Filter |
13 |
## |
14 |
## Revision 1.1 2002/12/22 14:19:17 joko |
15 |
## + initial check-in |
16 |
## |
17 |
## ------------------------------------------------------------------------ |
18 |
|
19 |
|
20 |
package Data::Query::Filter::Regexp; |
21 |
|
22 |
use strict; |
23 |
use warnings; |
24 |
|
25 |
use base qw( DesignPattern::Logger ); |
26 |
|
27 |
|
28 |
use Data::Dumper; |
29 |
|
30 |
use Regexp::Group; |
31 |
use DesignPattern::Object; |
32 |
use Data::Mungle::Compare::Struct qw( isEmpty ); |
33 |
|
34 |
# ------------ common perl object constructor ------------ |
35 |
sub new { |
36 |
my $invocant = shift; |
37 |
my $class = ref($invocant) || $invocant; |
38 |
my @args = (); |
39 |
@_ && (@args = @_); |
40 |
#$logger->debug( __PACKAGE__ . "->new( @args )" ); # this is not "common"! |
41 |
my $self = { @_ }; |
42 |
bless $self, $class; |
43 |
$self->{caller} = caller; |
44 |
|
45 |
#print Dumper(caller(2)); |
46 |
#exit; |
47 |
|
48 |
$self->_init(); |
49 |
return $self; |
50 |
} |
51 |
|
52 |
sub _init { |
53 |
my $self = shift; |
54 |
|
55 |
# try to load filter-declaration from configuration scope inside perl-module (yes - it's already abstracted out there!) |
56 |
$self->{declaration} = DesignPattern::Object->fromPackage($self->{module}); |
57 |
#print Dumper($self->{declaration}); |
58 |
|
59 |
|
60 |
# the regexp-object which does the hard work for us ;-) |
61 |
$self->{regexp} = Regexp::Group->new( |
62 |
'data' => \$self->{data}, # reference ... |
63 |
#'data' => $self->{data}, # ... or not? |
64 |
'metadata' => $self->{declaration}->metadata(), |
65 |
'patterns' => $self->{declaration}->patterns(), |
66 |
'coderefs' => $self->{declaration}->coderefs(), |
67 |
'verbose' => 1, |
68 |
); |
69 |
|
70 |
} |
71 |
|
72 |
sub run { |
73 |
my $self = shift; |
74 |
my $steps = shift; |
75 |
my $coderef = shift; |
76 |
|
77 |
#print "cb: $coderef", "\n"; |
78 |
|
79 |
my $result = $self->{regexp}->scan($steps, $coderef); |
80 |
|
81 |
# configure tracing |
82 |
# respects additional trace-options passed to _trace-method |
83 |
$self->{TRACE_OPTIONS} = 1; |
84 |
# disables _any_ tracing - even if sub-conditions evaluate to true values |
85 |
$self->{TRACE_DISABLED} = 0; |
86 |
|
87 |
# trace the result |
88 |
# cute: ;-) |
89 |
#$self->trace('matches after Regexp::Group->scan', $self->{regexp}->getMatches(), 1, undef, { tag => '', exit => 0 }); |
90 |
#$self->trace('results after Regexp::Group->scan', $self->{regexp}->getResults(), 1, undef, { tag => '', exit => 0 }); |
91 |
|
92 |
return $result; |
93 |
} |
94 |
|
95 |
sub index { |
96 |
my $self = shift; |
97 |
my $steps = shift; |
98 |
|
99 |
# configure tracing |
100 |
# respects additional trace-options passed to _trace-method |
101 |
$self->{TRACE_OPTIONS} = 1; |
102 |
# disables _any_ tracing - even if sub-conditions evaluate to true values |
103 |
$self->{TRACE_DISABLED} = 0; |
104 |
|
105 |
# trace the result |
106 |
# cute: ;-) |
107 |
#$self->trace('matches after Regexp::Group->scan', $self->{regexp}->getMatches(), 1, undef, { tag => '', exit => 0 }); |
108 |
#$self->trace('results after Regexp::Group->scan', $self->{regexp}->getResults(), 1, undef, { tag => '', exit => 0 }); |
109 |
|
110 |
my $result = $self->{regexp}->scan($steps); |
111 |
|
112 |
|
113 |
return $result; |
114 |
} |
115 |
|
116 |
sub continue { |
117 |
my $self = shift; |
118 |
my $scankey = shift; |
119 |
my $result = $self->{regexp}->continue($scankey); |
120 |
} |
121 |
|
122 |
sub getResults { |
123 |
my $self = shift; |
124 |
return $self->{regexp}->{result}; |
125 |
} |
126 |
|
127 |
sub getResultCount { |
128 |
my $self = shift; |
129 |
#my $count = ($#{$self->{regexp}->{result}} == -1 ? 0 : $#{$self->{regexp}->{result}}); |
130 |
#$count++; |
131 |
|
132 |
|
133 |
my $matches = $self->{regexp}->getMatches(); |
134 |
return if isEmpty($matches); |
135 |
|
136 |
my $count = $#{$matches}; |
137 |
$count++; |
138 |
return $count; |
139 |
} |
140 |
|
141 |
1; |