deliantra/Deliantra-Client/DC.pm

=head1 NAME

DC - undocumented utility garbage for our deliantra client

=head1 SYNOPSIS

 use DC;

=head1 DESCRIPTION

=over 4

=cut

package DC;

use Carp ();

our $VERSION;

BEGIN {
   $VERSION = '2.02';

   use XSLoader;
   XSLoader::load "Deliantra::Client", $VERSION;
}

use utf8;
use strict qw(vars subs);

use AnyEvent ();
use Pod::POM ();
use File::Path ();
use Storable (); # finally
use Fcntl ();
use JSON::XS qw(encode_json decode_json);

=item guard { BLOCK }

Returns an object that executes the given block as soon as it is destroyed.

=cut

sub guard(&) {
   bless \(my $cb = $_[0]), "DC::Guard"
}

sub DC::Guard::DESTROY {
   ${$_[0]}->()
}

=item shorten $string[, $maxlength]

=cut

sub shorten($;$) {
   my ($str, $len) = @_;
   substr $str, $len, (length $str), "..." if $len + 3 <= length $str;
   $str
}

sub asxml($) {
   local $_ = $_[0];

   s/&/&amp;/g;
   s/>/&gt;/g;
   s/</&lt;/g;

   $_
}

sub socketpipe() {
   socketpair my $fh1, my $fh2, &Socket::AF_UNIX, &Socket::SOCK_STREAM, &Socket::PF_UNSPEC
      or die "cannot establish bidirectional pipe: $!\n";

   ($fh1, $fh2)
}

sub background(&;&) {
   my ($bg, $cb) = @_;

   my ($fh_r, $fh_w) = DC::socketpipe;

   my $pid = fork;

   if (defined $pid && !$pid) {
      local $SIG{__DIE__};

      open STDOUT, ">&", $fh_w;
      open STDERR, ">&", $fh_w;
      close $fh_r;
      close $fh_w;

      $| = 1;

      eval { $bg->() };

      if ($@) {
         my $msg = $@;
         $msg =~ s/\n+/\n/;
         warn "FATAL: $msg";
         DC::_exit 1;
      }

      # win32 is fucked up, of course. exit will clean stuff up,
      # which destroys our database etc. _exit will exit ALL
      # forked processes, because of the dreaded fork emulation.
      DC::_exit 0;
   }

   close $fh_w;

   my $buffer;

   my $w; $w = AnyEvent->io (fh => $fh_r, poll => 'r', cb => sub {
      unless (sysread $fh_r, $buffer, 4096, length $buffer) {
         undef $w;
         $cb->();
         return;
      }

      while ($buffer =~ s/^(.*)\n//) {
         my $line = $1;
         $line =~ s/\s+$//;
         utf8::decode $line;
         if ($line =~ /^\x{e877}json_msg (.*)$/s) {
            $cb->(JSON::XS->new->allow_nonref->decode ($1));
         } else {
            ::message ({
               markup => "background($pid): " . DC::asxml $line,
            });
         }
      }
   });
}

sub background_msg {
   my ($msg) = @_;

   $msg = "\x{e877}json_msg " . JSON::XS->new->allow_nonref->encode ($msg);
   $msg =~ s/\n//g;
   utf8::encode $msg;
   print $msg, "\n";
}

package DC;

our $RC_THEME;
our %THEME;
our @RC_PATH;
our $RC_BASE;

for (grep !ref, @INC) {
   $RC_BASE = "$_/Deliantra/Client/private/resources";
   last if -d $RC_BASE;
}

sub find_rcfile($) {
   my $path;

   for (@RC_PATH, "") {
      $path = "$RC_BASE/$_/$_[0]";
      return $path if -r $path;
   }

   die "FATAL: can't find required file \"$_[0]\" in \"$RC_BASE\"\n";
}

sub load_json($) {
   my ($file) = @_;

   open my $fh, $file
      or return;

   local $/;
   JSON::XS->new->utf8->relaxed->decode (<$fh>)
}

sub set_theme($) {
   return if $RC_THEME eq $_[0];
   $RC_THEME = $_[0];

   # kind of hacky, find the main theme file, then load all theme files and merge them

   %THEME = ();
   @RC_PATH = "theme-$RC_THEME";

   my $theme = load_json find_rcfile "theme.json"
      or die "FATAL: theme resource file not found";

   @RC_PATH = @{ $theme->{path} } if $theme->{path};

   for (@RC_PATH, "") {
      my $theme = load_json "$RC_BASE/$_/theme.json"
         or next;

      %THEME = ( %$theme, %THEME );
   }
}

sub read_cfg {
   my ($file) = @_;

   $::CFG = load_json $file;
}

sub write_cfg {
   my $file = "$Deliantra::VARDIR/client.cf";

   $::CFG->{VERSION} = $::VERSION;

   open my $fh, ">:utf8", $file
      or return;
   print $fh JSON::XS->new->utf8->pretty->encode ($::CFG);
}

sub http_proxy {
   my @proxy = win32_proxy_info;

   if (@proxy) {
      "http://" . (@proxy < 2 ? "" : @proxy < 3 ? "$proxy[1]\@" : "$proxy[1]:$proxy[2]\@") . $proxy[0]
   } elsif (exists $ENV{http_proxy}) {
      $ENV{http_proxy}
   } else {
     ()
   }
}

sub set_proxy {
   my $proxy = http_proxy
      or return;

   $ENV{http_proxy} = $proxy;
}

sub lwp_useragent {
   require LWP::UserAgent;
   
   DC::set_proxy;

   my $ua = LWP::UserAgent->new (
      agent      => "deliantra $VERSION",
      keep_alive => 1,
      env_proxy  => 1,
      timeout    => 30,
   );
}

sub lwp_check($) {
   my ($res) = @_;

   $res->is_error
      and die $res->status_line;

   $res
}

sub fh_nonblocking($$) {
   my ($fh, $nb) = @_;

   if ($^O eq "MSWin32") {
      $nb = (! ! $nb) + 0;
      ioctl $fh, 0x8004667e, \$nb; # FIONBIO
   } else {
      fcntl $fh, &Fcntl::F_SETFL, $nb ? &Fcntl::O_NONBLOCK : 0;
   }
}

package DC::Layout;

$DC::OpenGL::INIT_HOOK{"DC::Layout"} = sub {
   glyph_cache_restore;
};

$DC::OpenGL::SHUTDOWN_HOOK{"DC::Layout"} = sub {
   glyph_cache_backup;
};

1;

=back

=head1 AUTHOR

 Marc Lehmann <schmorp@schmorp.de>
 http://home.schmorp.de/

=cut

Revision:	1.199
Committed:	Wed Dec 24 04:13:13 2008 UTC (15 years, 4 months ago) by root
Branch:	MAIN
CVS Tags:	rel-2_02
Changes since 1.198:	+1 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	=head1 NAME
2
3	root	1.169	DC - undocumented utility garbage for our deliantra client
4	root	1.1
5			=head1 SYNOPSIS
6
7	root	1.169	use DC;
8	root	1.1
9			=head1 DESCRIPTION
10
11			=over 4
12
13			=cut
14
15	root	1.169	package DC;
16	root	1.1
17	root	1.121	use Carp ();
18
19	root	1.187	our $VERSION;
20
21	root	1.1	BEGIN {
22	root	1.199	$VERSION = '2.02';
23	root	1.1
24	root	1.2	use XSLoader;
25	root	1.168	XSLoader::load "Deliantra::Client", $VERSION;
26	root	1.1	}
27
28	root	1.62	use utf8;
29	root	1.187	use strict qw(vars subs);
30	root	1.62
31	root	1.52	use AnyEvent ();
32	root	1.89	use Pod::POM ();
33	root	1.135	use File::Path ();
34	root	1.89	use Storable (); # finally
35	root	1.141	use Fcntl ();
36	root	1.159	use JSON::XS qw(encode_json decode_json);
37	root	1.127
38	root	1.103	=item guard { BLOCK }
39
40			Returns an object that executes the given block as soon as it is destroyed.
41
42			=cut
43
44			sub guard(&) {
45	root	1.169	bless \(my $cb = $_[0]), "DC::Guard"
46	root	1.103	}
47
48	root	1.169	sub DC::Guard::DESTROY {
49	root	1.103	${$_[0]}->()
50			}
51
52	root	1.133	=item shorten $string[, $maxlength]
53
54			=cut
55
56			sub shorten($;$) {
57			my ($str, $len) = @_;
58			substr $str, $len, (length $str), "..." if $len + 3 <= length $str;
59			$str
60			}
61
62	root	1.105	sub asxml($) {
63			local $_ = $_[0];
64	root	1.89
65	root	1.105	s/&/&/g;
66			s/>/>/g;
67			s/</</g;
68	root	1.89
69	root	1.105	$_
70	root	1.89	}
71
72	root	1.123	sub socketpipe() {
73	root	1.193	socketpair my $fh1, my $fh2, &Socket::AF_UNIX, &Socket::SOCK_STREAM, &Socket::PF_UNSPEC
74	root	1.140	or die "cannot establish bidirectional pipe: $!\n";
75	root	1.123
76			($fh1, $fh2)
77			}
78
79	root	1.127	sub background(&;&) {
80			my ($bg, $cb) = @_;
81	root	1.123
82	root	1.169	my ($fh_r, $fh_w) = DC::socketpipe;
83	root	1.123
84			my $pid = fork;
85
86			if (defined $pid && !$pid) {
87	root	1.124	local $SIG{__DIE__};
88	root	1.123
89			open STDOUT, ">&", $fh_w;
90			open STDERR, ">&", $fh_w;
91			close $fh_r;
92			close $fh_w;
93
94			$\| = 1;
95
96	root	1.127	eval { $bg->() };
97	root	1.124
98			if ($@) {
99			my $msg = $@;
100			$msg =~ s/\n+/\n/;
101			warn "FATAL: $msg";
102	root	1.169	DC::_exit 1;
103	root	1.124	}
104	root	1.123
105			# win32 is fucked up, of course. exit will clean stuff up,
106			# which destroys our database etc. _exit will exit ALL
107			# forked processes, because of the dreaded fork emulation.
108	root	1.169	DC::_exit 0;
109	root	1.123	}
110
111			close $fh_w;
112
113			my $buffer;
114
115	root	1.126	my $w; $w = AnyEvent->io (fh => $fh_r, poll => 'r', cb => sub {
116	root	1.123	unless (sysread $fh_r, $buffer, 4096, length $buffer) {
117	root	1.126	undef $w;
118	root	1.127	$cb->();
119			return;
120	root	1.123	}
121
122			while ($buffer =~ s/^(.*)\n//) {
123			my $line = $1;
124	root	1.124	$line =~ s/\s+$//;
125	root	1.123	utf8::decode $line;
126	root	1.127	if ($line =~ /^\x{e877}json_msg (.*)$/s) {
127	root	1.139	$cb->(JSON::XS->new->allow_nonref->decode ($1));
128	root	1.127	} else {
129			::message ({
130	root	1.169	markup => "background($pid): " . DC::asxml $line,
131	root	1.127	});
132			}
133	root	1.123	}
134			});
135			}
136
137	root	1.127	sub background_msg {
138			my ($msg) = @_;
139
140	root	1.139	$msg = "\x{e877}json_msg " . JSON::XS->new->allow_nonref->encode ($msg);
141	root	1.127	$msg =~ s/\n//g;
142			utf8::encode $msg;
143			print $msg, "\n";
144			}
145
146	root	1.169	package DC;
147	root	1.52
148	root	1.191	our $RC_THEME;
149	root	1.192	our %THEME;
150	root	1.191	our @RC_PATH;
151	root	1.187	our $RC_BASE;
152
153			for (grep !ref, @INC) {
154			$RC_BASE = "$_/Deliantra/Client/private/resources";
155			last if -d $RC_BASE;
156			}
157
158	root	1.5	sub find_rcfile($) {
159			my $path;
160
161	root	1.191	for (@RC_PATH, "") {
162	root	1.189	$path = "$RC_BASE/$_/$_[0]";
163			return $path if -r $path;
164			}
165	root	1.5
166	root	1.187	die "FATAL: can't find required file \"$_[0]\" in \"$RC_BASE\"\n";
167	root	1.5	}
168
169	root	1.192	sub load_json($) {
170			my ($file) = @_;
171
172			open my $fh, $file
173			or return;
174
175			local $/;
176			JSON::XS->new->utf8->relaxed->decode (<$fh>)
177			}
178
179	root	1.191	sub set_theme($) {
180			return if $RC_THEME eq $_[0];
181			$RC_THEME = $_[0];
182
183	root	1.192	# kind of hacky, find the main theme file, then load all theme files and merge them
184
185			%THEME = ();
186	root	1.191	@RC_PATH = "theme-$RC_THEME";
187
188	root	1.192	my $theme = load_json find_rcfile "theme.json"
189			or die "FATAL: theme resource file not found";
190	root	1.191
191	root	1.192	@RC_PATH = @{ $theme->{path} } if $theme->{path};
192
193			for (@RC_PATH, "") {
194			my $theme = load_json "$RC_BASE/$_/theme.json"
195			or next;
196
197			%THEME = ( %$theme, %THEME );
198	root	1.191	}
199			}
200
201	root	1.5	sub read_cfg {
202			my ($file) = @_;
203
204	root	1.192	$::CFG = load_json $file;
205	root	1.5	}
206
207			sub write_cfg {
208	root	1.178	my $file = "$Deliantra::VARDIR/client.cf";
209	root	1.5
210	root	1.107	$::CFG->{VERSION} = $::VERSION;
211
212			open my $fh, ">:utf8", $file
213	root	1.5	or return;
214	root	1.180	print $fh JSON::XS->new->utf8->pretty->encode ($::CFG);
215	root	1.5	}
216
217	root	1.122	sub http_proxy {
218			my @proxy = win32_proxy_info;
219
220			if (@proxy) {
221			"http://" . (@proxy < 2 ? "" : @proxy < 3 ? "$proxy[1]\@" : "$proxy[1]:$proxy[2]\@") . $proxy[0]
222			} elsif (exists $ENV{http_proxy}) {
223			$ENV{http_proxy}
224			} else {
225			()
226			}
227			}
228
229			sub set_proxy {
230			my $proxy = http_proxy
231			or return;
232
233			$ENV{http_proxy} = $proxy;
234			}
235
236	root	1.127	sub lwp_useragent {
237			require LWP::UserAgent;
238
239	root	1.169	DC::set_proxy;
240	root	1.127
241			my $ua = LWP::UserAgent->new (
242	root	1.171	agent => "deliantra $VERSION",
243	root	1.127	keep_alive => 1,
244			env_proxy => 1,
245			timeout => 30,
246			);
247			}
248
249			sub lwp_check($) {
250			my ($res) = @_;
251
252			$res->is_error
253			and die $res->status_line;
254
255			$res
256			}
257
258	root	1.141	sub fh_nonblocking($$) {
259			my ($fh, $nb) = @_;
260
261	root	1.142	if ($^O eq "MSWin32") {
262			$nb = (! ! $nb) + 0;
263	root	1.143	ioctl $fh, 0x8004667e, \$nb; # FIONBIO
264	root	1.141	} else {
265			fcntl $fh, &Fcntl::F_SETFL, $nb ? &Fcntl::O_NONBLOCK : 0;
266			}
267			}
268
269	root	1.169	package DC::Layout;
270	root	1.97
271	root	1.169	$DC::OpenGL::INIT_HOOK{"DC::Layout"} = sub {
272	root	1.164	glyph_cache_restore;
273			};
274
275	root	1.169	$DC::OpenGL::SHUTDOWN_HOOK{"DC::Layout"} = sub {
276	root	1.164	glyph_cache_backup;
277	root	1.97	};
278
279	root	1.1	1;
280
281			=back
282
283			=head1 AUTHOR
284
285			Marc Lehmann <schmorp@schmorp.de>
286			http://home.schmorp.de/
287
288			=cut
289