lib/SuikaWiki/Plugin.pm

# -*- perl -*-

=head1 NAME

SuikaWiki::Plugin --- SuikaWiki: Plugin manager and the interface to the Wiki database from plugins

=cut

package SuikaWiki::Plugin;
use strict;
our $VERSION = do{my @r=(q$Revision: 1.5 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
our ($plugin_directory, @plugin_directory, %List, %Index, %Cache, %On);
push @main::INC, $plugin_directory.'/../..';
require SuikaWiki::Markup::XML; ## Used by plugins

=head1 PLUGIN INTERFACE

=over 4

=item $o->new_index ($index_name)

Increments the index number and returns the new index number.

=cut

sub new_index ($$) { ++$Index{$_[1]} }

=item $o->magic_and_content ($document)

(DEPRECATED) Splits the documents into the magic line and content part.
Use SuikaWiki::SrcFormat.

=cut

sub magic_and_content ($$) {
  my ($magic, $page) = ('', $_[1]);
  $magic = $1 if $page =~ s!^((?:\#\?|/\*|<\?)[^\x02\x0A\x0D]+)[\x02\x0A\x0D]+!!s;
  ($magic, $page);
}

=item $o->feature ($package_name)

Returns whether the feature is enabled or not.
If the feature is usable but not loaded, it is loaded and C<1> is returned.

=cut

sub feature ($$;%) {
  my ($o, $package, %o) = @_;
  no strict 'refs';
  if (${$package . '::VERSION'}) {
    caller (1)->import if $o{use};
    return 1;
  } else {
    if (eval qq{require $package}) {
      caller (1)->import if $o{use};
      return 1;
    } else {
      return 0;
    }
  }
}

{my %Formatter;
sub formatter ($$) {
  my $t = $_[1]; $t =~ tr/-/_/;
        unless ($Formatter{$t}) {
            require Message::Util::Formatter;
            $Formatter{$t} = Message::Util::Formatter->new;
            for (@{$SuikaWiki::Plugin::List{'wiki'.$t}||[]}) {
                $_->load_formatter ($Formatter{$t}, type => 'wiki'.$t);
            }
            $Formatter{$t}->option (return_class => 'SuikaWiki::Markup::XML');
        }
  return $Formatter{$t};
}}

our $DB;#temporary
sub db ($) {
    ## TODO: common interface to WikiDB
    $DB;
}

sub set_data ($$$$;%) {
    my ($self, $prop, $key, $data, %opt) = @_;
    ## TODO: common interface to WikiDB
    ## TODO: error recovering
    $DB->set ($prop => $key => $data);
    if ($opt{-touch}) {
        $DB->set (lastmodified => $key => time);
    }
}

sub get_data ($$$$;%) {
    my ($self, $prop, $key, %opt) = @_;
    ## TODO: common interface to WikiDB
    ## TODO: error recovering
    $DB->get ($prop => $key);
}

=head1 PLUGIN MANAGER

=over 4

=item SuikaWiki::Plugin->import_plugins

Searchs plugins into $plugin_directory and loads all plugins found.
This method should be called at least one time before plugin-required-features
are used.

=cut

sub import_plugins ($) {
  my @plugins;
  for my $dir ($plugin_directory, @plugin_directory) {
    opendir PDIR, $dir;
    push @plugins, map {[$_, $dir.'/'.$_.'.pm']} grep {s/\.pm$//} readdir (PDIR);
    closedir PDIR;
  }
  for my $plugin (@plugins) {
    unless ($plugin->[0] =~ /[^A-Za-z0-9_]/) {
      eval qq{ require \$plugin->[1]; SuikaWiki::Plugin::$plugin->[0]\->import; 1 } or die $@;
      push @{$List{_all}}, qq(SuikaWiki::Plugin::$plugin->[0]);
    }
  }
  ## callback (onLoad)
  for (@{$On{Load}||[]}) {
    &{$_};
  }
}

=item SuikaWiki::Plugin::regist ($plugin_package, @categories)

Regists the plugin categories provided by the plugin package.
This method should be called from plugin packages.

Example:

  sub import {
    my $self = shift;
    $self->SuikaWiki::Plugin::regist (qw/wikiform_input/);
  }

=cut

sub regist ($@) {
    my $pack = shift;
    for (@_) {
        push @{$List{$_}}, $pack;
    }
}

=back

=head1 WIKIPLUGIN MANAGER OBJECT

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

=over 4

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

Constructs new instance of WikiPlugin manager

=cut

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

=item $p->use_type ($type)

Declares rules classified as $type is to be used.
Even in current implementation this method makes no meaning,
plugin callers must declare by this method for future compatibility.

=cut

sub use_type ($$) {
  #my ($self, $type) = @_;
}

=item $p->{rule}->{ $type }->{ $name } = { plugin rule definition }

WikiPlugin rule

@@TBD@@

=item $p->{wiki}

Wiki implementation $p is associated with

=back

=head1 SEE ALSO

suikawiki.pl, suikawiki-config.ph, <IW:SuikaWiki:SuikaWiki>

=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: 2003/07/17 23:58:41 $
1	wakaba	1.1	# -- perl --
2
3			=head1 NAME
4
5			SuikaWiki::Plugin --- SuikaWiki: Plugin manager and the interface to the Wiki database from plugins
6
7			=cut
8
9			package SuikaWiki::Plugin;
10			use strict;
11	wakaba	1.6	our $VERSION = do{my @r=(q$Revision: 1.5 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
12	wakaba	1.4	our ($plugin_directory, @plugin_directory, %List, %Index, %Cache, %On);
13	wakaba	1.1	push @main::INC, $plugin_directory.'/../..';
14	w	1.5	require SuikaWiki::Markup::XML; ## Used by plugins
15	wakaba	1.1
16			=head1 PLUGIN INTERFACE
17
18			=over 4
19
20			=item $o->new_index ($index_name)
21
22			Increments the index number and returns the new index number.
23
24			=cut
25
26			sub new_index ($$) { ++$Index{$_[1]} }
27
28	w	1.5	=item $o->magic_and_content ($document)
29	wakaba	1.1
30	w	1.5	(DEPRECATED) Splits the documents into the magic line and content part.
31			Use SuikaWiki::SrcFormat.
32	wakaba	1.1
33			=cut
34
35			sub magic_and_content ($$) {
36			my ($magic, $page) = ('', $_[1]);
37			$magic = $1 if $page =~ s!^((?:\#\?\|/\*\|<\?)[^\x02\x0A\x0D]+)[\x02\x0A\x0D]+!!s;
38			($magic, $page);
39			}
40
41	wakaba	1.2	=item $o->feature ($package_name)
42
43			Returns whether the feature is enabled or not.
44			If the feature is usable but not loaded, it is loaded and C<1> is returned.
45
46			=cut
47
48			sub feature ($$;%) {
49			my ($o, $package, %o) = @_;
50			no strict 'refs';
51			if (${$package . '::VERSION'}) {
52			caller (1)->import if $o{use};
53			return 1;
54			} else {
55			if (eval qq{require $package}) {
56			caller (1)->import if $o{use};
57			return 1;
58			} else {
59			return 0;
60			}
61			}
62			}
63
64	w	1.5	{my %Formatter;
65			sub formatter ($$) {
66			my $t = $_[1]; $t =~ tr/-/_/;
67			unless ($Formatter{$t}) {
68			require Message::Util::Formatter;
69			$Formatter{$t} = Message::Util::Formatter->new;
70			for (@{$SuikaWiki::Plugin::List{'wiki'.$t}\|\|[]}) {
71			$_->load_formatter ($Formatter{$t}, type => 'wiki'.$t);
72			}
73			$Formatter{$t}->option (return_class => 'SuikaWiki::Markup::XML');
74			}
75			return $Formatter{$t};
76			}}
77
78	wakaba	1.6	our $DB;#temporary
79			sub db ($) {
80			## TODO: common interface to WikiDB
81			$DB;
82			}
83
84			sub set_data ($$$$;%) {
85			my ($self, $prop, $key, $data, %opt) = @_;
86			## TODO: common interface to WikiDB
87			## TODO: error recovering
88			$DB->set ($prop => $key => $data);
89			if ($opt{-touch}) {
90			$DB->set (lastmodified => $key => time);
91			}
92			}
93
94			sub get_data ($$$$;%) {
95			my ($self, $prop, $key, %opt) = @_;
96			## TODO: common interface to WikiDB
97			## TODO: error recovering
98			$DB->get ($prop => $key);
99			}
100
101	wakaba	1.1	=head1 PLUGIN MANAGER
102
103			=over 4
104
105	w	1.5	=item SuikaWiki::Plugin->import_plugins
106	wakaba	1.1
107			Searchs plugins into $plugin_directory and loads all plugins found.
108			This method should be called at least one time before plugin-required-features
109			are used.
110
111			=cut
112
113	w	1.5	sub import_plugins ($) {
114	wakaba	1.4	my @plugins;
115			for my $dir ($plugin_directory, @plugin_directory) {
116			opendir PDIR, $dir;
117			push @plugins, map {[$_, $dir.'/'.$_.'.pm']} grep {s/\.pm$//} readdir (PDIR);
118	wakaba	1.1	closedir PDIR;
119	wakaba	1.4	}
120			for my $plugin (@plugins) {
121			unless ($plugin->[0] =~ /[^A-Za-z0-9_]/) {
122	w	1.5	eval qq{ require \$plugin->[1]; SuikaWiki::Plugin::$plugin->[0]\->import; 1 } or die $@;
123	wakaba	1.4	push @{$List{_all}}, qq(SuikaWiki::Plugin::$plugin->[0]);
124	wakaba	1.3	}
125	wakaba	1.4	}
126			## callback (onLoad)
127			for (@{$On{Load}\|\|[]}) {
128			&{$_};
129			}
130	wakaba	1.1	}
131
132			=item SuikaWiki::Plugin::regist ($plugin_package, @categories)
133
134			Regists the plugin categories provided by the plugin package.
135			This method should be called from plugin packages.
136
137			Example:
138
139			sub import {
140			my $self = shift;
141			$self->SuikaWiki::Plugin::regist (qw/wikiform_input/);
142			}
143
144			=cut
145
146			sub regist ($@) {
147			my $pack = shift;
148			for (@_) {
149			push @{$List{$_}}, $pack;
150			}
151			}
152
153			=back
154
155	wakaba	1.6	=head1 WIKIPLUGIN MANAGER OBJECT
156
157			This part implements WikiPlugin manager object of SuikaWiki WikiPlugin
158			implementation model, second edition.
159
160			=over 4
161
162			=item $p = SuikaWiki::Plugin->new (wiki => $WIKI)
163
164			Constructs new instance of WikiPlugin manager
165
166			=cut
167
168			sub new ($%) {
169			my $class = shift;
170			my $self = bless {@_}, $class;
171
172			$self;
173			}
174
175			=item $p->use_type ($type)
176
177			Declares rules classified as $type is to be used.
178			Even in current implementation this method makes no meaning,
179			plugin callers must declare by this method for future compatibility.
180
181			=cut
182
183			sub use_type ($$) {
184			#my ($self, $type) = @_;
185			}
186
187			=item $p->{rule}->{ $type }->{ $name } = { plugin rule definition }
188
189			WikiPlugin rule
190
191			@@TBD@@
192
193			=item $p->{wiki}
194
195			Wiki implementation $p is associated with
196
197			=back
198
199	wakaba	1.1	=head1 SEE ALSO
200
201			suikawiki.pl, suikawiki-config.ph, <IW:SuikaWiki:SuikaWiki>
202
203			=head1 LICENSE
204
205			Copyright 2002-2003 Wakaba <w@suika.fam.cx>
206
207			This program is free software; you can redistribute it and/or
208			modify it under the same terms as Perl itself.
209
210			=cut
211
212	wakaba	1.6	1; # $Date: 2003/07/17 23:58:41 $