server/lib/cf.pm

package cf;

use Symbol;
use List::Util;

use strict;

our %COMMAND;
our @EVENT;
our %PROP_TYPE;
our %PROP_IDX;

BEGIN {
   @EVENT = map lc, @EVENT;

   *CORE::GLOBAL::warn = sub {
      my $msg = join "", @_;
      $msg .= "\n"
         unless $msg =~ /\n$/;

      print STDERR "cfperl: $msg";
      LOG llevError, "cfperl: $msg";
   };
}

# generate property mutators
sub prop_gen {
   my ($prefix, $class) = @_;

   no strict 'refs';

   for my $prop (keys %PROP_TYPE) {
      $prop =~ /^\Q$prefix\E_(.*$)/ or next;
      my $sub = lc $1;

      my $type = $PROP_TYPE{$prop};
      my $idx  = $PROP_IDX {$prop};

      *{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
         $_[0]->get_property ($type, $idx)
      };

      *{"$class\::set_$sub"} = sub {
         $_[0]->set_property ($type, $idx, $_[1]);
      };
   }
}

# auto-generate most of the API

prop_gen OBJECT_PROP => "cf::object";
# CFAPI_OBJECT_ANIMATION?
prop_gen PLAYER_PROP => "cf::object::player";

prop_gen MAP_PROP    => "cf::map";
prop_gen ARCH_PROP   => "cf::arch";

# guessed hierarchies

@cf::object::player::ISA = 'cf::object';
@cf::object::map::ISA    = 'cf::object';

my %ext_pkg;
my @exts;
my @hook;
my %command;

sub inject_event {
   my ($data) = @_;

   my $cb = $hook[$data->{event_code}]{$data->{extension}}
      or return;

   $cb->($data)
}

sub inject_global_event {
   my ($data) = @_;

   my $cb = $hook[$data->{event_code}]
      or return;

   $_->($data) for values %$cb;

   ()
}

sub inject_command {
   my ($name, $obj, $params) = @_;

   for my $cmd (@{ $command{$name} }) {
      $cmd->[1]->($obj, $params);
   }

   -1
}

sub register_command {
   my ($name, $time, $cb) = @_;

   my $caller = caller;

   warn "registering command '$name/$time' to '$caller'";

   push @{ $command{$name} }, [$time, $cb, $caller];
   $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
}

sub load_extension {
   my ($path) = @_;

   $path =~ /([^\/\\]+)\.ext$/ or die "$path";
   my $base = $1;
   my $pkg = $1;
   $pkg =~ s/[^[:word:]]/_/g;
   $pkg = "cf::ext::$pkg";

   warn "loading '$path' into '$pkg'\n";

   open my $fh, "<:utf8", $path
      or die "$path: $!";

   my $source =
      "package $pkg; use strict; use utf8;\n"
      . "#line 1 \"$path\"\n{\n"
      . (do { local $/; <$fh> })
      . "\n};\n1";

   eval $source
      or die "$path: $@";

   push @exts, $pkg;
   $ext_pkg{$base} = $pkg;

   no strict 'refs';

#   @{"$pkg\::ISA"} = cf::ext::;

   for my $idx (0 .. $#EVENT) {
      if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
         warn "registering $EVENT[$idx] hook\n";
         $hook[$idx]{$base} = $ref;
      }
   }
}

sub unload_extension {
   my ($pkg) = @_;

   warn "removing extension $pkg\n";

   # remove hooks
   for my $idx (0 .. $#EVENT) {
      delete $hook[$idx]{$pkg};
   }

   # remove commands
   for my $name (keys %command) {
      my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };

      if (@cb) {
         $command{$name} = \@cb;
         $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
      } else {
         delete $command{$name};
         delete $COMMAND{"$name\000"};
      }
   }

   Symbol::delete_package $pkg;
}

sub load_extensions {
   my $LIBDIR = maps_directory "perl";

   for my $ext (<$LIBDIR/*.ext>) {
      next unless -r $ext;
      eval {
         load_extension $ext;
         1
      } or warn "$ext not loaded: $@";
   }
}

register_command "perl-reload", 0, sub {
   my ($who, $arg) = @_;

   if ($who->flag (FLAG_WIZ)) {
      $who->message ("reloading...");

      warn "reloading...\n";
      eval {
         unload_extension $_ for @exts;
         delete $INC{"cf.pm"};

         # don't, removes xs symbols, too
         #Symbol::delete_package $pkg;

         require cf;
      };
      warn $@ if $@;
      $who->message ($@) if $@;
      warn "reloaded\n";

      $who->message ("reloaded");
   } else {
      $who->message ("Intruder Alert!");
   }
};

load_extensions;

1

Revision:	1.5
Committed:	Wed Feb 8 03:46:15 2006 UTC (18 years, 3 months ago) by root
Branch:	MAIN
Changes since 1.4:	+13 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	package cf;
2
3			use Symbol;
4			use List::Util;
5
6			use strict;
7
8			our %COMMAND;
9			our @EVENT;
10			our %PROP_TYPE;
11			our %PROP_IDX;
12
13			BEGIN {
14			@EVENT = map lc, @EVENT;
15
16			*CORE::GLOBAL::warn = sub {
17			my $msg = join "", @_;
18			$msg .= "\n"
19			unless $msg =~ /\n$/;
20
21			print STDERR "cfperl: $msg";
22			LOG llevError, "cfperl: $msg";
23			};
24			}
25
26			# generate property mutators
27			sub prop_gen {
28			my ($prefix, $class) = @_;
29
30			no strict 'refs';
31
32			for my $prop (keys %PROP_TYPE) {
33			$prop =~ /^\Q$prefix\E_(.*$)/ or next;
34			my $sub = lc $1;
35
36			my $type = $PROP_TYPE{$prop};
37			my $idx = $PROP_IDX {$prop};
38
39			{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
40			$_[0]->get_property ($type, $idx)
41			};
42
43			*{"$class\::set_$sub"} = sub {
44			$_[0]->set_property ($type, $idx, $_[1]);
45			};
46			}
47			}
48
49			# auto-generate most of the API
50
51			prop_gen OBJECT_PROP => "cf::object";
52			# CFAPI_OBJECT_ANIMATION?
53			prop_gen PLAYER_PROP => "cf::object::player";
54
55			prop_gen MAP_PROP => "cf::map";
56			prop_gen ARCH_PROP => "cf::arch";
57
58			# guessed hierarchies
59
60			@cf::object::player::ISA = 'cf::object';
61			@cf::object::map::ISA = 'cf::object';
62
63	root	1.5	my %ext_pkg;
64	root	1.1	my @exts;
65			my @hook;
66			my %command;
67
68			sub inject_event {
69			my ($data) = @_;
70
71	root	1.5	my $cb = $hook[$data->{event_code}]{$data->{extension}}
72			or return;
73
74			$cb->($data)
75			}
76
77			sub inject_global_event {
78			my ($data) = @_;
79
80	root	1.1	my $cb = $hook[$data->{event_code}]
81			or return;
82
83			$_->($data) for values %$cb;
84
85			()
86			}
87
88			sub inject_command {
89			my ($name, $obj, $params) = @_;
90
91			for my $cmd (@{ $command{$name} }) {
92			$cmd->[1]->($obj, $params);
93			}
94
95			-1
96			}
97
98			sub register_command {
99			my ($name, $time, $cb) = @_;
100
101			my $caller = caller;
102
103	root	1.4	warn "registering command '$name/$time' to '$caller'";
104
105	root	1.1	push @{ $command{$name} }, [$time, $cb, $caller];
106			$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
107			}
108
109			sub load_extension {
110			my ($path) = @_;
111
112			$path =~ /([^\/\\]+)\.ext$/ or die "$path";
113	root	1.5	my $base = $1;
114	root	1.1	my $pkg = $1;
115			$pkg =~ s/[^[:word:]]/_/g;
116			$pkg = "cf::ext::$pkg";
117
118			warn "loading '$path' into '$pkg'\n";
119
120			open my $fh, "<:utf8", $path
121			or die "$path: $!";
122
123			my $source =
124			"package $pkg; use strict; use utf8;\n"
125			. "#line 1 \"$path\"\n{\n"
126			. (do { local $/; <$fh> })
127			. "\n};\n1";
128
129			eval $source
130			or die "$path: $@";
131
132			push @exts, $pkg;
133	root	1.5	$ext_pkg{$base} = $pkg;
134	root	1.1
135			no strict 'refs';
136
137			# @{"$pkg\::ISA"} = cf::ext::;
138
139			for my $idx (0 .. $#EVENT) {
140			if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
141			warn "registering $EVENT[$idx] hook\n";
142	root	1.5	$hook[$idx]{$base} = $ref;
143	root	1.1	}
144			}
145			}
146
147			sub unload_extension {
148			my ($pkg) = @_;
149
150			warn "removing extension $pkg\n";
151
152			# remove hooks
153			for my $idx (0 .. $#EVENT) {
154			delete $hook[$idx]{$pkg};
155			}
156
157			# remove commands
158			for my $name (keys %command) {
159			my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
160
161			if (@cb) {
162			$command{$name} = \@cb;
163			$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
164			} else {
165			delete $command{$name};
166			delete $COMMAND{"$name\000"};
167			}
168			}
169
170			Symbol::delete_package $pkg;
171			}
172
173			sub load_extensions {
174			my $LIBDIR = maps_directory "perl";
175
176			for my $ext (<$LIBDIR/*.ext>) {
177	root	1.3	next unless -r $ext;
178	root	1.2	eval {
179			load_extension $ext;
180			1
181			} or warn "$ext not loaded: $@";
182	root	1.1	}
183			}
184
185			register_command "perl-reload", 0, sub {
186			my ($who, $arg) = @_;
187
188			if ($who->flag (FLAG_WIZ)) {
189	root	1.3	$who->message ("reloading...");
190
191	root	1.1	warn "reloading...\n";
192	root	1.4	eval {
193			unload_extension $_ for @exts;
194			delete $INC{"cf.pm"};
195
196			# don't, removes xs symbols, too
197			#Symbol::delete_package $pkg;
198
199			require cf;
200			};
201			warn $@ if $@;
202			$who->message ($@) if $@;
203	root	1.1	warn "reloaded\n";
204	root	1.3
205			$who->message ("reloaded");
206			} else {
207			$who->message ("Intruder Alert!");
208	root	1.1	}
209			};
210
211			load_extensions;
212
213			1
214