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Edit File : Plugin.pm \| Size : 6.42 KB
package Alien::Build::Plugin; use strict; use warnings; use 5.008004; use Data::Dumper (); use Carp (); use Digest::SHA (); our @CARP_NOT = qw( alienfile Alien::Build Alien::Build::Meta ); # ABSTRACT: Plugin base class for Alien::Build our $VERSION = '2.80'; # VERSION sub new { my $class = shift; my %args = @_ == 1 ? ($class->meta->default => $_[0]) : @_; my $instance_id = Digest::SHA::sha1_hex(Data::Dumper->new([$class, \%args])->Sortkeys(1)->Dump); my $self = bless { instance_id => $instance_id }, $class; my $prop = $self->meta->prop; foreach my $name (keys %$prop) { $self->{$name} = defined $args{$name} ? delete $args{$name} : ref($prop->{$name}) eq 'CODE' ? $prop->{$name}->() : $prop->{$name}; } foreach my $name (keys %args) { Carp::carp "$class has no $name property"; } $self; } sub instance_id { shift->{instance_id} } sub init { my($self) = @_; $self; } sub import { my($class) = @_; return if $class ne __PACKAGE__; my $caller = caller; { no strict 'refs'; @{ "${caller}::ISA" } = __PACKAGE__ } my $meta = $caller->meta; my $has = sub { my($name, $default) = @_; $meta->add_property($name, $default); }; { no strict 'refs'; { "${caller}::has" } = $has } } my %meta; sub meta { my($class) = @_; $class = ref $class if ref $class; $meta{$class} \|\|= Alien::Build::PluginMeta->new( class => $class ); } package Alien::Build::PluginMeta; sub new { my($class, %args) = @_; my $self = bless { prop => {}, %args, }, $class; } sub default { my($self) = @_; $self->{default} \|\| do { Carp::croak "No default for @{[ $self->{class} ]}"; }; } sub add_property { my($self, $name, $default) = @_; my $single = $name =~ s{^(\+)}{}; $self->{default} = $name if $single; $self->{prop}->{$name} = $default; my $accessor = sub { my($self, $new) = @_; $self->{$name} = $new if defined $new; $self->{$name}; }; # add the accessor { no strict 'refs'; { $self->{class} . '::' . $name} = $accessor } $self; } sub prop { shift->{prop}; } 1; __END__ =pod =encoding UTF-8 =head1 NAME Alien::Build::Plugin - Plugin base class for Alien::Build =head1 VERSION version 2.80 =head1 SYNOPSIS Create your plugin: package Alien::Build::Plugin::Type::MyPlugin; use Alien::Build::Plugin; use Carp (); has prop1 => 'default value'; has prop2 => sub { 'default value' }; has prop3 => sub { Carp::croak 'prop3 is a required property' }; sub init { my($self, $meta) = @_; my $prop1 = $self->prop1; my $prop2 = $self->prop2; my $prop3 = $self->prop3; $meta->register_hook(sub { build => [ '%{make}', '%{make} install' ], }); } From your L<alienfile> use alienfile; plugin 'Type::MyPlugin' => ( prop2 => 'different value', prop3 => 'need to provide since it is required', ); =head1 DESCRIPTION This document describes the L<Alien::Build> plugin base class. For details on how to write a plugin, see L<Alien::Build::Manual::PluginAuthor>. Listed are some common types of plugins: =over 4 =item L<Alien::Build::Plugin::Build> Tools for building. =item L<Alien::Build::Plugin::Core> Tools already included. =item L<Alien::Build::Plugin::Decode> Normally use Download plugins which will pick the correct Decode plugins. =item L<Alien::Build::Plugin::Digest> Tools for checking cryptographic signatures during a C<share> install. =item L<Alien::Build::Plugin::Download> Methods for retrieving from the internet. =item L<Alien::Build::Plugin::Extract> Extract from archives that have been downloaded. =item L<Alien::Build::Plugin::Fetch> Normally use Download plugins which will pick the correct Fetch plugins. =item L<Alien::Build::Plugin::Gather> Plugins that modify or enhance the gather step. =item L<Alien::Build::Plugin::PkgConfig> Plugins that work with C<pkg-config> or libraries that provide the same functionality. =item L<Alien::Build::Plugin::Prefer> Normally use Download plugins which will pick the correct Prefer plugins. =item L<Alien::Build::Plugin::Probe> Look for packages already installed on the system. =item L<Alien::Build::Plugin::Probe> Plugins useful for unit testing L<Alien::Build> itself, or plugins for it. =back =head1 CONSTRUCTOR =head2 new my $plugin = Alien::Build::Plugin->new(%props); =head2 PROPERTIES =head2 instance_id my $id = $plugin->instance_id; Returns an instance id for the plugin. This is computed from the class and arguments that are passed into the plugin constructor, so technically two instances with the exact same arguments will have the same instance id, but in practice you should never have two instances with the exact same arguments. =head1 METHODS =head2 init $plugin->init($ab_class->meta); # $ab is an Alien::Build class name You provide the implementation for this. The intent is to register hooks and set meta properties on the L<Alien::Build> class. =head2 has has $prop_name; has $prop_name => $default; Specifies a property of the plugin. You may provide a default value as either a string scalar, or a code reference. The code reference will be called to compute the default value, and if you want the default to be a list or hash reference, this is how you want to do it: has foo => sub { [1,2,3] }; =head2 meta my $meta = $plugin->meta; Returns the plugin meta object. =head1 SEE ALSO L<Alien::Build>, L<alienfile>, L<Alien::Build::Manual::PluginAuthor> =head1 AUTHOR Author: Graham Ollis E<lt>plicease@cpan.orgE<gt> Contributors: Diab Jerius (DJERIUS) Roy Storey (KIWIROY) Ilya Pavlov David Mertens (run4flat) Mark Nunberg (mordy, mnunberg) Christian Walde (Mithaldu) Brian Wightman (MidLifeXis) Zaki Mughal (zmughal) mohawk (mohawk2, ETJ) Vikas N Kumar (vikasnkumar) Flavio Poletti (polettix) Salvador Fandiño (salva) Gianni Ceccarelli (dakkar) Pavel Shaydo (zwon, trinitum) Kang-min Liu (劉康民, gugod) Nicholas Shipp (nshp) Juan Julián Merelo Guervós (JJ) Joel Berger (JBERGER) Petr Písař (ppisar) Lance Wicks (LANCEW) Ahmad Fatoum (a3f, ATHREEF) José Joaquín Atria (JJATRIA) Duke Leto (LETO) Shoichi Kaji (SKAJI) Shawn Laffan (SLAFFAN) Paul Evans (leonerd, PEVANS) Håkon Hægland (hakonhagland, HAKONH) nick nauwelaerts (INPHOBIA) Florian Weimer =head1 COPYRIGHT AND LICENSE This software is copyright (c) 2011-2022 by Graham Ollis. 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 Back

Edit File : Plugin.pm | Size : 6.42 KB

package Alien::Build::Plugin;

use strict;
use warnings;
use 5.008004;
use Data::Dumper ();
use Carp ();
use Digest::SHA ();

our @CARP_NOT = qw( alienfile Alien::Build Alien::Build::Meta );

# ABSTRACT: Plugin base class for Alien::Build
our $VERSION = '2.80'; # VERSION

sub new
{
  my $class = shift;
  my %args = @_ == 1 ? ($class->meta->default => $_[0]) : @_;

my $instance_id = Digest::SHA::sha1_hex(Data::Dumper->new([$class, \%args])->Sortkeys(1)->Dump);
  my $self = bless { instance_id => $instance_id }, $class;

my $prop = $self->meta->prop;
  foreach my $name (keys %$prop)
  {
    $self->{$name} = defined $args{$name}
      ? delete $args{$name}
      : ref($prop->{$name}) eq 'CODE'
        ? $prop->{$name}->()
        : $prop->{$name};
  }

foreach my $name (keys %args)
  {
    Carp::carp "$class has no $name property";
  }

$self;
}

sub instance_id { shift->{instance_id} }

sub init
{
  my($self) = @_;
  $self;
}

sub import
{
  my($class) = @_;

return if $class ne __PACKAGE__;

my $caller = caller;
  { no strict 'refs'; @{ "${caller}::ISA" } = __PACKAGE__ }

my $meta = $caller->meta;
  my $has = sub {
    my($name, $default) = @_;
    $meta->add_property($name, $default);
  };

{ no strict 'refs'; *{ "${caller}::has" } = $has }
}

my %meta;
sub meta
{
  my($class) = @_;
  $class = ref $class if ref $class;
  $meta{$class} ||= Alien::Build::PluginMeta->new( class => $class );
}

package Alien::Build::PluginMeta;

sub new
{
  my($class, %args) = @_;
  my $self = bless {
    prop => {},
    %args,
  }, $class;
}

sub default
{
  my($self) = @_;
  $self->{default} || do {
    Carp::croak "No default for @{[ $self->{class} ]}";
  };
}

sub add_property
{
  my($self, $name, $default) = @_;
  my $single = $name =~ s{^(\+)}{};
  $self->{default} = $name if $single;
  $self->{prop}->{$name} = $default;

my $accessor = sub {
    my($self, $new) = @_;
    $self->{$name} = $new if defined $new;
    $self->{$name};
  };

# add the accessor
  { no strict 'refs'; *{ $self->{class} . '::' . $name} = $accessor }

$self;
}

sub prop
{
  shift->{prop};
}

__END__

=pod

=encoding UTF-8

=head1 NAME

Alien::Build::Plugin - Plugin base class for Alien::Build

=head1 VERSION

version 2.80

=head1 SYNOPSIS

Create your plugin:

package Alien::Build::Plugin::Type::MyPlugin;
 
 use Alien::Build::Plugin;
 use Carp ();
 
 has prop1 => 'default value';
 has prop2 => sub { 'default value' };
 has prop3 => sub { Carp::croak 'prop3 is a required property' };
 
 sub init
 {
   my($self, $meta) = @_;
 
   my $prop1 = $self->prop1;
   my $prop2 = $self->prop2;
   my $prop3 = $self->prop3;
 
   $meta->register_hook(sub {
     build => [ '%{make}', '%{make} install' ],
   });
 }

From your L<alienfile>

use alienfile;
 plugin 'Type::MyPlugin' => (
   prop2 => 'different value',
   prop3 => 'need to provide since it is required',
 );

=head1 DESCRIPTION

This document describes the L<Alien::Build> plugin base class.  For details
on how to write a plugin, see L<Alien::Build::Manual::PluginAuthor>.

Listed are some common types of plugins:

=over 4

=item L<Alien::Build::Plugin::Build>

Tools for building.

=item L<Alien::Build::Plugin::Core>

Tools already included.

=item L<Alien::Build::Plugin::Decode>

Normally use Download plugins which will pick the correct Decode plugins.

=item L<Alien::Build::Plugin::Digest>

Tools for checking cryptographic signatures during a C<share> install.

=item L<Alien::Build::Plugin::Download>

Methods for retrieving from the internet.

=item L<Alien::Build::Plugin::Extract>

Extract from archives that have been downloaded.

=item L<Alien::Build::Plugin::Fetch>

Normally use Download plugins which will pick the correct Fetch plugins.

=item L<Alien::Build::Plugin::Gather>

Plugins that modify or enhance the gather step.

=item L<Alien::Build::Plugin::PkgConfig>

Plugins that work with C<pkg-config> or libraries that provide the same
functionality.

=item L<Alien::Build::Plugin::Prefer>

Normally use Download plugins which will pick the correct Prefer plugins.

=item L<Alien::Build::Plugin::Probe>

Look for packages already installed on the system.

=item L<Alien::Build::Plugin::Probe>

Plugins useful for unit testing L<Alien::Build> itself, or plugins for it.

=back

=head1 CONSTRUCTOR

=head2 new

my $plugin = Alien::Build::Plugin->new(%props);

=head2 PROPERTIES

=head2 instance_id

my $id = $plugin->instance_id;

Returns an instance id for the plugin.  This is computed from the class and
arguments that are passed into the plugin constructor, so technically two
instances with the exact same arguments will have the same instance id, but
in practice you should never have two instances with the exact same arguments.

=head1 METHODS

=head2 init

$plugin->init($ab_class->meta); # $ab is an Alien::Build class name

You provide the implementation for this.  The intent is to register
hooks and set meta properties on the L<Alien::Build> class.

=head2 has

has $prop_name;
 has $prop_name => $default;

Specifies a property of the plugin.  You may provide a default value as either
a string scalar, or a code reference.  The code reference will be called to
compute the default value, and if you want the default to be a list or hash
reference, this is how you want to do it:

has foo => sub { [1,2,3] };

=head2 meta

my $meta = $plugin->meta;

Returns the plugin meta object.

=head1 SEE ALSO

L<Alien::Build>, L<alienfile>, L<Alien::Build::Manual::PluginAuthor>

=head1 AUTHOR

Author: Graham Ollis E<lt>plicease@cpan.orgE<gt>

Contributors:

Diab Jerius (DJERIUS)

Roy Storey (KIWIROY)

Ilya Pavlov

David Mertens (run4flat)

Mark Nunberg (mordy, mnunberg)

Christian Walde (Mithaldu)

Brian Wightman (MidLifeXis)

Zaki Mughal (zmughal)

mohawk (mohawk2, ETJ)

Vikas N Kumar (vikasnkumar)

Flavio Poletti (polettix)

Salvador Fandiño (salva)

Gianni Ceccarelli (dakkar)

Pavel Shaydo (zwon, trinitum)

Kang-min Liu (劉康民, gugod)

Nicholas Shipp (nshp)

Juan Julián Merelo Guervós (JJ)

Joel Berger (JBERGER)

Petr Písař (ppisar)

Lance Wicks (LANCEW)

Ahmad Fatoum (a3f, ATHREEF)

José Joaquín Atria (JJATRIA)

Duke Leto (LETO)

Shoichi Kaji (SKAJI)

Shawn Laffan (SLAFFAN)

Paul Evans (leonerd, PEVANS)

Håkon Hægland (hakonhagland, HAKONH)

nick nauwelaerts (INPHOBIA)

Florian Weimer

=head1 COPYRIGHT AND LICENSE

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

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