1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
package ExtUtils::Config;
$ExtUtils::Config::VERSION = '0.010';
use strict;
use warnings;
use Config;
sub new {
my ($pack, $args) = @_;
return bless {
values => ($args ? { %$args } : {}),
}, $pack;
}
sub get {
my ($self, $key) = @_;
return exists $self->{values}{$key} ? $self->{values}{$key} : $Config{$key};
}
sub exists {
my ($self, $key) = @_;
return exists $self->{values}{$key} || exists $Config{$key};
}
sub values_set {
my $self = shift;
return { %{$self->{values}} };
}
sub all_config {
my $self = shift;
return { %Config, %{ $self->{values}} };
}
sub serialize {
my $self = shift;
require Data::Dumper;
return $self->{serialized} ||= Data::Dumper->new([ $self->{values} ])->Terse(1)->Sortkeys(1)->Dump;
}
sub but {
my ($self, $args) = @_;
my %new = %{ $self->{values} };
for my $key (keys %$args) {
if (defined $args->{$key}) {
$new{$key} = $args->{$key}
}
else {
delete $new{$key};
}
}
return bless { values => \%new }, ref $self;
}
1;
# ABSTRACT: A wrapper for perl's configuration
__END__
=pod
=encoding UTF-8
=head1 NAME
ExtUtils::Config - A wrapper for perl's configuration
=head1 VERSION
version 0.010
=head1 SYNOPSIS
my $config = ExtUtils::Config->new();
$config->get('installsitelib');
=head1 DESCRIPTION
ExtUtils::Config is an abstraction around the %Config hash. By itself it is not a particularly interesting module by any measure, however it ties together a family of modern toolchain modules.
=head1 METHODS
=head2 new(\%config)
Create a new ExtUtils::Config object. The values in C<\%config> are used to initialize the object.
=head2 get($key)
Get the value of C<$key>. If not overridden it will return the value in %Config.
=head2 exists($key)
Tests for the existence of $key.
=head2 but(\%keys)
This creates a new C<ExtUtils::Config> object based on the current one, but with the values in %keys replacing the current values. Any undefined value means it will be removed from the overriden set.
=head2 values_set()
Get a hashref of all overridden values.
=head2 all_config()
Get a hashref of the complete configuration, including overrides.
=head2 serialize()
This method serializes the object to some kind of string. This can be useful for various caching purposes.
=head1 SEE ALSO
=over 4
=item * L<Module::Build::Tiny>
=item * L<ExtUtils::InstallPaths>
=item * L<CPAN::Static::Install>
=item * L<ExtUtils::HasCompiler>
=item * L<ExtUtils::Builder>
=item * L<CPAN::Requirements::Dynamic>
=item * L<Devel::FindPerl>
=back
=head1 AUTHORS
=over 4
=item *
Ken Williams <kwilliams@cpan.org>
=item *
Leon Timmermans <leont@cpan.org>
=back
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2006 by Ken Williams, Leon Timmermans.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
