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: 1.3 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
our ($plugin_directory, @plugin_directory, %List, %Index, %Cache, %On);
push @main::INC, $plugin_directory.'/../..';

=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 $o->magic_and_conten ($document)

Splits the documents into the magic line and content part.

=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;
    }
  }
}

=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::$plugin->[0]\->import };
      push @{$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 SEE ALSO

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

=head1 LICENSE

Copyright 2002-2003 Wakaba <[email protected]>

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

=cut

1; # $Date: 2003/04/29 10:36:17 $
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	1.4	our $VERSION = do{my @r=(q$Revision: 1.3 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r};
12			our ($plugin_directory, @plugin_directory, %List, %Index, %Cache, %On);
13	wakaba	1.1	push @main::INC, $plugin_directory.'/../..';
14
15			=head1 PLUGIN INTERFACE
16
17			=over 4
18
19			=item $o->new_index ($index_name)
20
21			Increments the index number and returns the new index number.
22
23			=cut
24
25			sub new_index ($$) { ++$Index{$_[1]} }
26
27			=item $o->magic_and_conten ($document)
28
29			Splits the documents into the magic line and content part.
30
31			=cut
32
33			sub magic_and_content ($$) {
34			my ($magic, $page) = ('', $_[1]);
35			$magic = $1 if $page =~ s!^((?:\#\?\|/\*\|<\?)[^\x02\x0A\x0D]+)[\x02\x0A\x0D]+!!s;
36			($magic, $page);
37			}
38
39	wakaba	1.2	=item $o->feature ($package_name)
40
41			Returns whether the feature is enabled or not.
42			If the feature is usable but not loaded, it is loaded and C<1> is returned.
43
44			=cut
45
46			sub feature ($$;%) {
47			my ($o, $package, %o) = @_;
48			no strict 'refs';
49			if (${$package . '::VERSION'}) {
50			caller (1)->import if $o{use};
51			return 1;
52			} else {
53			if (eval qq{require $package}) {
54			caller (1)->import if $o{use};
55			return 1;
56			} else {
57			return 0;
58			}
59			}
60			}
61
62	wakaba	1.1	=head1 PLUGIN MANAGER
63
64			=over 4
65
66			=item SuikaWiki::Plugin::import_plugins
67
68			Searchs plugins into $plugin_directory and loads all plugins found.
69			This method should be called at least one time before plugin-required-features
70			are used.
71
72			=cut
73
74			sub import_plugins () {
75	wakaba	1.4	my @plugins;
76			for my $dir ($plugin_directory, @plugin_directory) {
77			opendir PDIR, $dir;
78			push @plugins, map {[$_, $dir.'/'.$_.'.pm']} grep {s/\.pm$//} readdir (PDIR);
79	wakaba	1.1	closedir PDIR;
80	wakaba	1.4	}
81			for my $plugin (@plugins) {
82			unless ($plugin->[0] =~ /[^A-Za-z0-9_]/) {
83			eval qq{ require \$plugin->[1]; SuikaWiki::Plugin::$plugin->[0]\->import };
84			push @{$List{_all}}, qq(SuikaWiki::Plugin::$plugin->[0]);
85	wakaba	1.3	}
86	wakaba	1.4	}
87			## callback (onLoad)
88			for (@{$On{Load}\|\|[]}) {
89			&{$_};
90			}
91	wakaba	1.1	}
92
93			=item SuikaWiki::Plugin::regist ($plugin_package, @categories)
94
95			Regists the plugin categories provided by the plugin package.
96			This method should be called from plugin packages.
97
98			Example:
99
100			sub import {
101			my $self = shift;
102			$self->SuikaWiki::Plugin::regist (qw/wikiform_input/);
103			}
104
105			=cut
106
107			sub regist ($@) {
108			my $pack = shift;
109			for (@_) {
110			push @{$List{$_}}, $pack;
111			}
112			}
113
114			=back
115
116			=head1 SEE ALSO
117
118			suikawiki.pl, suikawiki-config.ph, <IW:SuikaWiki:SuikaWiki>
119
120			=head1 LICENSE
121
122			Copyright 2002-2003 Wakaba <[email protected]>
123
124			This program is free software; you can redistribute it and/or
125			modify it under the same terms as Perl itself.
126
127			=cut
128
129	wakaba	1.4	1; # $Date: 2003/04/29 10:36:17 $