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";
   };
}

# 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 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!");
   }
};

*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: $!";

      print $fh Storable::nfreeze {
         version => 1,
         obs => $obs,
      };

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

register "<global>", __PACKAGE__;

load_extensions;

1

Revision:	1.7
Committed:	Tue Mar 7 13:44:43 2006 UTC (18 years, 2 months ago) by root
Branch:	MAIN
Changes since 1.6:	+11 -0 lines
Log Message:	* empty log message *
#	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: $msg";
24			};
25			}
26
27			# generate property mutators
28			sub prop_gen {
29			my ($prefix, $class) = @_;
30
31			no strict 'refs';
32
33			for my $prop (keys %PROP_TYPE) {
34			$prop =~ /^\Q$prefix\E_(.*$)/ or next;
35			my $sub = lc $1;
36
37			my $type = $PROP_TYPE{$prop};
38			my $idx = $PROP_IDX {$prop};
39
40			{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
41			$_[0]->get_property ($type, $idx)
42			};
43
44			*{"$class\::set_$sub"} = sub {
45			$_[0]->set_property ($type, $idx, $_[1]);
46			};
47			}
48			}
49
50			# auto-generate most of the API
51
52			prop_gen OBJECT_PROP => "cf::object";
53			# CFAPI_OBJECT_ANIMATION?
54			prop_gen PLAYER_PROP => "cf::object::player";
55
56			prop_gen MAP_PROP => "cf::map";
57			prop_gen ARCH_PROP => "cf::arch";
58
59			# guessed hierarchies
60
61			@cf::object::player::ISA = 'cf::object';
62			@cf::object::map::ISA = 'cf::object';
63
64	root	1.5	my %ext_pkg;
65	root	1.1	my @exts;
66			my @hook;
67			my %command;
68
69			sub inject_event {
70			my ($data) = @_;
71
72	root	1.5	my $cb = $hook[$data->{event_code}]{$data->{extension}}
73			or return;
74
75			$cb->($data)
76			}
77
78			sub inject_global_event {
79			my ($data) = @_;
80
81	root	1.1	my $cb = $hook[$data->{event_code}]
82			or return;
83
84			$_->($data) for values %$cb;
85
86			()
87			}
88
89			sub inject_command {
90			my ($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	1.7	*on_mapclean = sub {
218			my $map = shift->{map};
219
220			my $path = $map->tmpname;
221			defined $path or return;
222
223			unlink "$path.cfperl";
224			};
225
226	root	1.6	*on_mapin =
227			*on_mapload = sub {
228			my $map = shift->{map};
229
230			my $path = $map->tmpname;
231			$path = $map->path unless defined $path;
232
233			open my $fh, "<:raw", "$path.cfperl"
234			or return; # no perl data
235
236			my $data = Storable::thaw do { local $/; <$fh> };
237
238			$data->{version} <= 1
239			or return; # too new
240
241			$map->_set_obs ($data->{obs});
242			};
243
244			*on_mapout = sub {
245			my $map = shift->{map};
246
247			my $path = $map->tmpname;
248			$path = $map->path unless defined $path;
249
250			my $obs = $map->_get_obs;
251
252			if (defined $obs) {
253			open my $fh, ">:raw", "$path.cfperl"
254			or die "$path.cfperl: $!";
255
256			print $fh Storable::nfreeze {
257			version => 1,
258			obs => $obs,
259			};
260	root	1.7
261			chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible g
262	root	1.6	} else {
263			unlink "$path.cfperl";
264			}
265			};
266
267			register "<global>", __PACKAGE__;
268
269	root	1.1	load_extensions;
270
271			1
272