lib/SuikaWiki/Plugin.pm

=head1 NAME

SuikaWiki::Plugin - SuikaWiki: WikiPlugin common interface

=head1 DESCRIPTION

This module provides WikiPlugin interface implementation.

There are two interface: class methods collection and WikiPlugin object.
Class methods collection provides some useful facilities to be
called by WikiPlugin module and/or by contexts using WikiPlugin.

This module is part of SuikaWiki.

=cut

package SuikaWiki::Plugin;
use strict;
our $VERSION = do{my @r=(q$Revision: 1.14 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};

=head1 CLASS METHODS

=over 4

=item $formatter = SuikaWiki::Plugin->formatter ($category_name)

Returns an instance of formatter whose category (context) is
$category_name.

=cut

{my %Formatter;
sub formatter ($$) {
  my $t = $_[1]; $t =~ tr/-/_/;
  unless ($Formatter{$t}) {
    $Formatter{$t} = new SuikaWiki::Plugin::xml_formatter
                       -category_name => $t;
  }
  return $Formatter{$t};
}}

{my %Formatter;
sub text_formatter ($$) {
  my $t = $_[1]; $t =~ tr/-/_/;
  unless ($Formatter{$t}) {
    $Formatter{$t} = new SuikaWiki::Plugin::text_formatter
                       -category_name => $t;
  }
  return $Formatter{$t};
}}

{my %Formatter;
sub boolean_formatter ($$) {
  my $t = $_[1]; $t =~ tr/-/_/;
  unless ($Formatter{$t}) {
    $Formatter{$t} = new SuikaWiki::Plugin::boolean_formatter
                       -category_name => $t;
  }
  return $Formatter{$t};
}}

=item $package = SuikaWiki::Plugin->module_package ($plugin_name)

Returns package name of the plugin module named $plugin_name.

=cut

sub module_package ($$) {
  my ($self, $module) = @_;
  my $pack = $SuikaWiki::Plugin::Registry::Info{$module}->{module_name};
  if ($pack) {
    return $pack;
  } else {
    throw SuikaWiki::Plugin::error
      -type => 'PLUGIN_NOT_FOUND',
      module => $module,
      -object => $self, method => 'module_package';
  }
}

=item SuikaWiki::Plugin->load_directory ($dir1, $dir2,...)

Loads plugin modules in specified directories.

=cut

sub load_directory ($;@) {
  my $self = shift;
  for my $dir (@_) {
    opendir PDIR, $dir or throw SuikaWiki::Plugin::error
                            -type => 'PLUGIN_DIRECTORY_CANT_OPEN',
                            file => $dir,
                            message => $!,
                            -object => $self, method => 'load_directory';
    for (grep {substr ($_, -3) eq '.pm'} readdir PDIR) {
      eval { require $dir.'/'.$_ };
      if ($@) {
        throw SuikaWiki::Plugin::error
          -type => 'PLUGIN_COMPILE_ERROR',
          file => $dir.'/'.$_,
          message => $@,
          method => 'load_directory', -object => $self;
      }
    }
    closedir PDIR;
  }
}

sub load_file ($@) {
  my $self = shift;
  for (@_) {
    eval { require $_.'.pm' };
    if ($@) {
      throw SuikaWiki::Plugin::error
          -type => 'PLUGIN_COMPILE_ERROR',
          file => $_.'.pm',
          message => $@,
          method => 'load_file', -object => $self;
    }
  }
}

=back

=head1 WIKIPLUGIN MANAGER OBJECT

This part implements WikiPlugin manager object of SuikaWiki WikiPlugin 
implementation model, second edition.

Note that class methods such as C<< ->load_directory >>
and C<< ->formatter >> as also available as methods of WikiPlugin object,
although result of those operation is still "global".

WikiPlugin manager object is usually instantiated by C<init_plugins>
method of Wiki implementation object (C<SuikaWiki::Implementation> module).

  $wiki = <SuikaWiki::Implementation instance>;
  $wiki->init_plugins;
  $plugin_manager = $wiki->{plugin};

=over 4

=item $p = SuikaWiki::Plugin->new (wiki => $WIKI)

Constructs new instance of WikiPlugin manager

=cut

sub new ($;%) {
  my $class = shift;
  bless {@_}, $class;
}

sub exit ($) {
  my $self = shift;
  delete $self->{wiki};
  $self->{exited} = 1;
}

sub DESTROY ($) {
  my $self = shift;
  $self->exit unless $self->{exited};
}

=item $p->{wiki}

Wiki implementation $p is associated with

=back

=cut

package SuikaWiki::Plugin::xml_formatter;
require Message::Util::Formatter::Node;
our @ISA = 'Message::Util::Formatter::Node';
require Message::Markup::XML::Node;

sub ___rule_def ($) {
  $SuikaWiki::Plugin::Rule{$_[0]->{-category_name}} || {};
}

sub replace_option () {+{
    -class => 'Message::Markup::XML::Node',
}}

package SuikaWiki::Plugin::text_formatter;
require Message::Util::Formatter::Text;
our @ISA = 'Message::Util::Formatter::Text';

sub ___rule_def ($) {
  $SuikaWiki::Plugin::Rule{$_[0]->{-category_name}} || {};
}

package SuikaWiki::Plugin::boolean_formatter;
require Message::Util::Formatter::Boolean;
our @ISA = 'Message::Util::Formatter::Boolean';

sub ___rule_def ($) {
  $SuikaWiki::Plugin::Rule{$_[0]->{-category_name}} || {};
}

package SuikaWiki::Plugin::error;
require Message::Util::Error;
our @ISA = 'Message::Util::Error';

=head1 EXCEPTIONS

=over 4

=item PLUGIN_COMPILE_ERROR

Something wrong while loading WikiPlugin module file C<file>,
because of C<message>.

=item PLUGIN_DIRECTORY_CANT_OPEN

WikiPlugin directory C<file> cannot be opened, because of C<message>.

=item PLUGIN_NOT_FOUND

WikiPlugin module C<module> not found.

=cut

sub ___error_def () {+{
  PLUGIN_COMPILE_ERROR => {
    description => q(%t(name => method);: %t(name => file);: %t(name => message);),
  },
  PLUGIN_DIRECTORY_CANT_OPEN => {
    description => q(%t(name => method);: %t(name => file);: %t(name => message);),
  },
  PLUGIN_NOT_FOUND => {
    description => q(%t(name => method);: WikiPlugin module "%t(name => module);" not loaded),
  },
}}

=back

=head1 SEE ALSO

<IW:SuikaWiki:SuikaWiki:WikiPlugin>

C<lib/SuikaWiki/Plugin/*>,
C<misc/pluging/*>

=head1 LICENSE

Copyright 2002-2003 Wakaba <w@suika.fam.cx>

This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.

=cut

1; # $Date: 2004/03/10 06:58:10 $
1	wakaba	1.10	=head1 NAME
2
3			SuikaWiki::Plugin - SuikaWiki: WikiPlugin common interface
4
5			=head1 DESCRIPTION
6
7			This module provides WikiPlugin interface implementation.
8	wakaba	1.1
9	wakaba	1.10	There are two interface: class methods collection and WikiPlugin object.
10			Class methods collection provides some useful facilities to be
11			called by WikiPlugin module and/or by contexts using WikiPlugin.
12	wakaba	1.1
13	wakaba	1.10	This module is part of SuikaWiki.
14	wakaba	1.1
15			=cut
16
17			package SuikaWiki::Plugin;
18			use strict;
19	wakaba	1.15	our $VERSION = do{my @r=(q$Revision: 1.14 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
20	wakaba	1.1
21	wakaba	1.10	=head1 CLASS METHODS
22	wakaba	1.1
23			=over 4
24
25	wakaba	1.10	=item $formatter = SuikaWiki::Plugin->formatter ($category_name)
26
27			Returns an instance of formatter whose category (context) is
28			$category_name.
29
30			=cut
31	wakaba	1.1
32	w	1.5	{my %Formatter;
33			sub formatter ($$) {
34			my $t = $_[1]; $t =~ tr/-/_/;
35	wakaba	1.7	unless ($Formatter{$t}) {
36	wakaba	1.8	$Formatter{$t} = new SuikaWiki::Plugin::xml_formatter
37			-category_name => $t;
38	wakaba	1.7	}
39	w	1.5	return $Formatter{$t};
40			}}
41
42	wakaba	1.12	{my %Formatter;
43			sub text_formatter ($$) {
44			my $t = $_[1]; $t =~ tr/-/_/;
45			unless ($Formatter{$t}) {
46			$Formatter{$t} = new SuikaWiki::Plugin::text_formatter
47			-category_name => $t;
48			}
49			return $Formatter{$t};
50			}}
51
52	wakaba	1.14	{my %Formatter;
53			sub boolean_formatter ($$) {
54			my $t = $_[1]; $t =~ tr/-/_/;
55			unless ($Formatter{$t}) {
56			$Formatter{$t} = new SuikaWiki::Plugin::boolean_formatter
57			-category_name => $t;
58			}
59			return $Formatter{$t};
60			}}
61
62	wakaba	1.10	=item $package = SuikaWiki::Plugin->module_package ($plugin_name)
63
64			Returns package name of the plugin module named $plugin_name.
65
66			=cut
67
68	wakaba	1.8	sub module_package ($$) {
69			my ($self, $module) = @_;
70			my $pack = $SuikaWiki::Plugin::Registry::Info{$module}->{module_name};
71			if ($pack) {
72			return $pack;
73			} else {
74	wakaba	1.10	throw SuikaWiki::Plugin::error
75			-type => 'PLUGIN_NOT_FOUND',
76			module => $module,
77			-object => $self, method => 'module_package';
78	wakaba	1.8	}
79			}
80
81	wakaba	1.10	=item SuikaWiki::Plugin->load_directory ($dir1, $dir2,...)
82
83			Loads plugin modules in specified directories.
84
85			=cut
86	wakaba	1.6
87	wakaba	1.10	sub load_directory ($;@) {
88			my $self = shift;
89			for my $dir (@_) {
90			opendir PDIR, $dir or throw SuikaWiki::Plugin::error
91			-type => 'PLUGIN_DIRECTORY_CANT_OPEN',
92			file => $dir,
93			message => $!,
94			-object => $self, method => 'load_directory';
95	wakaba	1.13	for (grep {substr ($_, -3) eq '.pm'} readdir PDIR) {
96	wakaba	1.10	eval { require $dir.'/'.$_ };
97			if ($@) {
98			throw SuikaWiki::Plugin::error
99			-type => 'PLUGIN_COMPILE_ERROR',
100			file => $dir.'/'.$_,
101			message => $@,
102			method => 'load_directory', -object => $self;
103			}
104			}
105			closedir PDIR;
106			}
107	wakaba	1.1	}
108
109	wakaba	1.15	sub load_file ($@) {
110			my $self = shift;
111			for (@_) {
112			eval { require $_.'.pm' };
113			if ($@) {
114			throw SuikaWiki::Plugin::error
115			-type => 'PLUGIN_COMPILE_ERROR',
116			file => $_.'.pm',
117			message => $@,
118			method => 'load_file', -object => $self;
119			}
120			}
121			}
122
123	wakaba	1.1	=back
124
125	wakaba	1.6	=head1 WIKIPLUGIN MANAGER OBJECT
126
127			This part implements WikiPlugin manager object of SuikaWiki WikiPlugin
128			implementation model, second edition.
129
130	wakaba	1.10	Note that class methods such as C<< ->load_directory >>
131			and C<< ->formatter >> as also available as methods of WikiPlugin object,
132			although result of those operation is still "global".
133
134			WikiPlugin manager object is usually instantiated by C<init_plugins>
135			method of Wiki implementation object (C<SuikaWiki::Implementation> module).
136
137			$wiki = <SuikaWiki::Implementation instance>;
138			$wiki->init_plugins;
139			$plugin_manager = $wiki->{plugin};
140
141	wakaba	1.6	=over 4
142
143			=item $p = SuikaWiki::Plugin->new (wiki => $WIKI)
144
145			Constructs new instance of WikiPlugin manager
146
147			=cut
148
149	wakaba	1.10	sub new ($;%) {
150	wakaba	1.6	my $class = shift;
151	wakaba	1.10	bless {@_}, $class;
152	wakaba	1.6	}
153
154	wakaba	1.11	sub exit ($) {
155			my $self = shift;
156			delete $self->{wiki};
157			$self->{exited} = 1;
158			}
159
160			sub DESTROY ($) {
161			my $self = shift;
162			$self->exit unless $self->{exited};
163			}
164
165	wakaba	1.6	=item $p->{wiki}
166
167			Wiki implementation $p is associated with
168
169			=back
170
171	wakaba	1.8	=cut
172
173			package SuikaWiki::Plugin::xml_formatter;
174			require Message::Util::Formatter::Node;
175			our @ISA = 'Message::Util::Formatter::Node';
176			require Message::Markup::XML::Node;
177
178	wakaba	1.11	sub ___rule_def ($) {
179	wakaba	1.12	$SuikaWiki::Plugin::Rule{$_[0]->{-category_name}} \|\| {};
180	wakaba	1.8	}
181
182	wakaba	1.10	sub replace_option () {+{
183	wakaba	1.8	-class => 'Message::Markup::XML::Node',
184	wakaba	1.10	}}
185
186	wakaba	1.12	package SuikaWiki::Plugin::text_formatter;
187			require Message::Util::Formatter::Text;
188			our @ISA = 'Message::Util::Formatter::Text';
189
190			sub ___rule_def ($) {
191			$SuikaWiki::Plugin::Rule{$_[0]->{-category_name}} \|\| {};
192			}
193
194	wakaba	1.14	package SuikaWiki::Plugin::boolean_formatter;
195			require Message::Util::Formatter::Boolean;
196			our @ISA = 'Message::Util::Formatter::Boolean';
197
198			sub ___rule_def ($) {
199			$SuikaWiki::Plugin::Rule{$_[0]->{-category_name}} \|\| {};
200			}
201
202	wakaba	1.10	package SuikaWiki::Plugin::error;
203			require Message::Util::Error;
204			our @ISA = 'Message::Util::Error';
205
206			=head1 EXCEPTIONS
207
208			=over 4
209
210			=item PLUGIN_COMPILE_ERROR
211
212			Something wrong while loading WikiPlugin module file C<file>,
213			because of C<message>.
214
215			=item PLUGIN_DIRECTORY_CANT_OPEN
216
217			WikiPlugin directory C<file> cannot be opened, because of C<message>.
218
219			=item PLUGIN_NOT_FOUND
220
221			WikiPlugin module C<module> not found.
222
223			=cut
224
225	wakaba	1.11	sub ___error_def () {+{
226	wakaba	1.10	PLUGIN_COMPILE_ERROR => {
227			description => q(%t(name => method);: %t(name => file);: %t(name => message);),
228			},
229			PLUGIN_DIRECTORY_CANT_OPEN => {
230			description => q(%t(name => method);: %t(name => file);: %t(name => message);),
231			},
232			PLUGIN_NOT_FOUND => {
233			description => q(%t(name => method);: WikiPlugin module "%t(name => module);" not loaded),
234			},
235			}}
236
237			=back
238	wakaba	1.8
239	wakaba	1.1	=head1 SEE ALSO
240
241	wakaba	1.10	<IW:SuikaWiki:SuikaWiki:WikiPlugin>
242
243			C<lib/SuikaWiki/Plugin/*>,
244			C<misc/pluging/*>
245	wakaba	1.1
246			=head1 LICENSE
247
248			Copyright 2002-2003 Wakaba <w@suika.fam.cx>
249
250			This program is free software; you can redistribute it and/or
251			modify it under the same terms as Perl itself.
252
253			=cut
254
255	wakaba	1.15	1; # $Date: 2004/03/10 06:58:10 $