server/lib/cf.pm

package cf;

use Symbol;
use List::Util;
use Storable;

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";
   };
}

my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!

# 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]);
      } unless $ignore_set{$prop};
   }
}

# 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;

   List::Util::max map $_->($data), 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 register {
   my ($base, $pkg) = @_;

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

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::;

   register $base, $pkg;
}

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/save/clean perl data associated with a map

*on_mapclean = sub {
   my $map = shift->{map};

   my $path = $map->tmpname;
   defined $path or return;

   unlink "$path.cfperl";
};

*on_mapin =
*on_mapload = sub {
   my $map = shift->{map};

   my $path = $map->tmpname;
   $path = $map->path unless defined $path;

   open my $fh, "<:raw", "$path.cfperl"
      or return; # no perl data

   my $data = Storable::thaw do { local $/; <$fh> };

   $data->{version} <= 1
      or return; # too new

   $map->_set_obs ($data->{obs});
};

*on_mapout = sub {
   my $map = shift->{map};

   my $path = $map->tmpname;
   $path = $map->path unless defined $path;

   my $obs = $map->_get_obs;

   if (defined $obs) {
      open my $fh, ">:raw", "$path.cfperl"
         or die "$path.cfperl: $!";

      stat $path;

      print $fh Storable::nfreeze {
         size    => (stat _)[7],
         time    => (stat _)[9],
         version => 1,
         obs     => $obs,
      };

      chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
   } else {
      unlink "$path.cfperl";
   }
};

#############################################################################
# load/save perl data associated with player->ob objects

*on_player_load = sub {
   my ($event) = @_;
   my $path = $event->{message};
   my $ob = $event->{who};

   open my $fh, "<:raw", "$path.cfperl"
      or return; # no perl data

   my $data = Storable::thaw do { local $/; <$fh> };

   $data->{version} <= 1
      or return; # too new

   %$ob = %{$data->{ob}};
};

*on_player_save = sub {
   my ($event) = @_;
   my $path = $event->{message};
   my $ob = $event->{who};

   if (keys %$ob) {
      open my $fh, ">:raw", "$path.cfperl"
         or die "$path.cfperl: $!";

      stat $path;

      print $fh Storable::nfreeze {
         size    => (stat _)[7],
         time    => (stat _)[9],
         version => 1,
         ob      => $ob,
      };

      chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
   } else {
      unlink "$path.cfperl";
   }
};

register "<global>", __PACKAGE__;

load_extensions;

1

Revision:	1.10
Committed:	Fri Mar 24 18:20:41 2006 UTC (18 years, 2 months ago) by root
Branch:	MAIN
Changes since 1.9:	+1 -3 lines
Log Message:	allow returnvalues from global events
#	User	Rev	Content
1	root	1.1	package cf;
2
3			use Symbol;
4			use List::Util;
5	root	1.6	use Storable;
6	root	1.1
7			use strict;
8
9			our %COMMAND;
10			our @EVENT;
11			our %PROP_TYPE;
12			our %PROP_IDX;
13
14			BEGIN {
15			@EVENT = map lc, @EVENT;
16
17			*CORE::GLOBAL::warn = sub {
18			my $msg = join "", @_;
19			$msg .= "\n"
20			unless $msg =~ /\n$/;
21
22			print STDERR "cfperl: $msg";
23			LOG llevError, "cfperl: $msg";
24			};
25			}
26
27	root	1.9	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!
28
29	root	1.1	# generate property mutators
30			sub prop_gen {
31			my ($prefix, $class) = @_;
32
33			no strict 'refs';
34
35			for my $prop (keys %PROP_TYPE) {
36			$prop =~ /^\Q$prefix\E_(.*$)/ or next;
37			my $sub = lc $1;
38
39			my $type = $PROP_TYPE{$prop};
40			my $idx = $PROP_IDX {$prop};
41
42			{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
43			$_[0]->get_property ($type, $idx)
44			};
45
46			*{"$class\::set_$sub"} = sub {
47			$_[0]->set_property ($type, $idx, $_[1]);
48	root	1.9	} unless $ignore_set{$prop};
49	root	1.1	}
50			}
51
52			# auto-generate most of the API
53
54			prop_gen OBJECT_PROP => "cf::object";
55			# CFAPI_OBJECT_ANIMATION?
56			prop_gen PLAYER_PROP => "cf::object::player";
57
58			prop_gen MAP_PROP => "cf::map";
59			prop_gen ARCH_PROP => "cf::arch";
60
61			# guessed hierarchies
62
63			@cf::object::player::ISA = 'cf::object';
64			@cf::object::map::ISA = 'cf::object';
65
66	root	1.5	my %ext_pkg;
67	root	1.1	my @exts;
68			my @hook;
69			my %command;
70
71			sub inject_event {
72			my ($data) = @_;
73
74	root	1.5	my $cb = $hook[$data->{event_code}]{$data->{extension}}
75			or return;
76
77			$cb->($data)
78			}
79
80			sub inject_global_event {
81			my ($data) = @_;
82
83	root	1.1	my $cb = $hook[$data->{event_code}]
84			or return;
85
86	root	1.10	List::Util::max map $_->($data), values %$cb
87	root	1.1	}
88
89			sub inject_command {
90			my ($name, $obj, $params) = @_;
91
92			for my $cmd (@{ $command{$name} }) {
93			$cmd->[1]->($obj, $params);
94			}
95
96			-1
97			}
98
99			sub register_command {
100			my ($name, $time, $cb) = @_;
101
102			my $caller = caller;
103
104	root	1.4	warn "registering command '$name/$time' to '$caller'";
105
106	root	1.1	push @{ $command{$name} }, [$time, $cb, $caller];
107			$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
108			}
109
110	root	1.6	sub register {
111			my ($base, $pkg) = @_;
112
113			for my $idx (0 .. $#EVENT) {
114			if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
115			warn "registering $EVENT[$idx] hook to '$pkg'\n";
116			$hook[$idx]{$base} = $ref;
117			}
118			}
119			}
120
121	root	1.1	sub load_extension {
122			my ($path) = @_;
123
124			$path =~ /([^\/\\]+)\.ext$/ or die "$path";
125	root	1.5	my $base = $1;
126	root	1.1	my $pkg = $1;
127			$pkg =~ s/[^[:word:]]/_/g;
128			$pkg = "cf::ext::$pkg";
129
130			warn "loading '$path' into '$pkg'\n";
131
132			open my $fh, "<:utf8", $path
133			or die "$path: $!";
134
135			my $source =
136			"package $pkg; use strict; use utf8;\n"
137			. "#line 1 \"$path\"\n{\n"
138			. (do { local $/; <$fh> })
139			. "\n};\n1";
140
141			eval $source
142			or die "$path: $@";
143
144			push @exts, $pkg;
145	root	1.5	$ext_pkg{$base} = $pkg;
146	root	1.1
147	root	1.6	# no strict 'refs';
148	root	1.1	# @{"$pkg\::ISA"} = cf::ext::;
149
150	root	1.6	register $base, $pkg;
151	root	1.1	}
152
153			sub unload_extension {
154			my ($pkg) = @_;
155
156			warn "removing extension $pkg\n";
157
158			# remove hooks
159			for my $idx (0 .. $#EVENT) {
160			delete $hook[$idx]{$pkg};
161			}
162
163			# remove commands
164			for my $name (keys %command) {
165			my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
166
167			if (@cb) {
168			$command{$name} = \@cb;
169			$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
170			} else {
171			delete $command{$name};
172			delete $COMMAND{"$name\000"};
173			}
174			}
175
176			Symbol::delete_package $pkg;
177			}
178
179			sub load_extensions {
180			my $LIBDIR = maps_directory "perl";
181
182			for my $ext (<$LIBDIR/*.ext>) {
183	root	1.3	next unless -r $ext;
184	root	1.2	eval {
185			load_extension $ext;
186			1
187			} or warn "$ext not loaded: $@";
188	root	1.1	}
189			}
190
191			register_command "perl-reload", 0, sub {
192			my ($who, $arg) = @_;
193
194			if ($who->flag (FLAG_WIZ)) {
195	root	1.3	$who->message ("reloading...");
196
197	root	1.1	warn "reloading...\n";
198	root	1.4	eval {
199			unload_extension $_ for @exts;
200			delete $INC{"cf.pm"};
201
202			# don't, removes xs symbols, too
203			#Symbol::delete_package $pkg;
204
205			require cf;
206			};
207			warn $@ if $@;
208			$who->message ($@) if $@;
209	root	1.1	warn "reloaded\n";
210	root	1.3
211			$who->message ("reloaded");
212			} else {
213			$who->message ("Intruder Alert!");
214	root	1.1	}
215			};
216
217	root	1.8	#############################################################################
218			# load/save/clean perl data associated with a map
219
220	root	1.7	*on_mapclean = sub {
221			my $map = shift->{map};
222
223			my $path = $map->tmpname;
224			defined $path or return;
225
226			unlink "$path.cfperl";
227			};
228
229	root	1.6	*on_mapin =
230			*on_mapload = sub {
231			my $map = shift->{map};
232
233			my $path = $map->tmpname;
234			$path = $map->path unless defined $path;
235
236			open my $fh, "<:raw", "$path.cfperl"
237			or return; # no perl data
238
239			my $data = Storable::thaw do { local $/; <$fh> };
240
241			$data->{version} <= 1
242			or return; # too new
243
244			$map->_set_obs ($data->{obs});
245			};
246
247			*on_mapout = sub {
248			my $map = shift->{map};
249
250			my $path = $map->tmpname;
251			$path = $map->path unless defined $path;
252
253			my $obs = $map->_get_obs;
254
255			if (defined $obs) {
256			open my $fh, ">:raw", "$path.cfperl"
257			or die "$path.cfperl: $!";
258
259	root	1.8	stat $path;
260
261			print $fh Storable::nfreeze {
262			size => (stat _)[7],
263			time => (stat _)[9],
264			version => 1,
265			obs => $obs,
266			};
267
268			chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible g
269			} else {
270			unlink "$path.cfperl";
271			}
272			};
273
274			#############################################################################
275			# load/save perl data associated with player->ob objects
276
277			*on_player_load = sub {
278			my ($event) = @_;
279			my $path = $event->{message};
280			my $ob = $event->{who};
281
282			open my $fh, "<:raw", "$path.cfperl"
283			or return; # no perl data
284
285			my $data = Storable::thaw do { local $/; <$fh> };
286
287			$data->{version} <= 1
288			or return; # too new
289
290			%$ob = %{$data->{ob}};
291			};
292
293			*on_player_save = sub {
294			my ($event) = @_;
295			my $path = $event->{message};
296			my $ob = $event->{who};
297
298			if (keys %$ob) {
299			open my $fh, ">:raw", "$path.cfperl"
300			or die "$path.cfperl: $!";
301
302			stat $path;
303
304	root	1.6	print $fh Storable::nfreeze {
305	root	1.8	size => (stat _)[7],
306			time => (stat _)[9],
307	root	1.6	version => 1,
308	root	1.8	ob => $ob,
309	root	1.6	};
310	root	1.7
311			chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible g
312	root	1.6	} else {
313			unlink "$path.cfperl";
314			}
315			};
316
317			register "<global>", __PACKAGE__;
318
319	root	1.1	load_extensions;
320
321			1
322