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 ();

BEGIN {
   $VERSION = '0.9971';

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

use utf8;

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;

sub find_rcfile($) {
   my $path;

   for (grep !ref, @INC) {
      $path = "$_/Deliantra/Client/private/resources/$_[0]";
      return $path if -r $path;
   }

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

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

   open my $fh, $file
      or return;

   local $/;
   my $CFG = <$fh>;

   $::CFG = decode_json $CFG;
}

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:	1.181
Committed:	Fri May 9 16:33:35 2008 UTC (16 years ago) by root
Branch:	MAIN
Changes since 1.180:	+0 -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	1.1	BEGIN {
20	root	1.179	$VERSION = '0.9971';
21	root	1.1
22	root	1.2	use XSLoader;
23	root	1.168	XSLoader::load "Deliantra::Client", $VERSION;
24	root	1.1	}
25
26	root	1.62	use utf8;
27
28	root	1.52	use AnyEvent ();
29	root	1.89	use Pod::POM ();
30	root	1.135	use File::Path ();
31	root	1.89	use Storable (); # finally
32	root	1.141	use Fcntl ();
33	root	1.159	use JSON::XS qw(encode_json decode_json);
34	root	1.127
35	root	1.103	=item guard { BLOCK }
36
37			Returns an object that executes the given block as soon as it is destroyed.
38
39			=cut
40
41			sub guard(&) {
42	root	1.169	bless \(my $cb = $_[0]), "DC::Guard"
43	root	1.103	}
44
45	root	1.169	sub DC::Guard::DESTROY {
46	root	1.103	${$_[0]}->()
47			}
48
49	root	1.133	=item shorten $string[, $maxlength]
50
51			=cut
52
53			sub shorten($;$) {
54			my ($str, $len) = @_;
55			substr $str, $len, (length $str), "..." if $len + 3 <= length $str;
56			$str
57			}
58
59	root	1.105	sub asxml($) {
60			local $_ = $_[0];
61	root	1.89
62	root	1.105	s/&/&/g;
63			s/>/>/g;
64			s/</</g;
65	root	1.89
66	root	1.105	$_
67	root	1.89	}
68
69	root	1.123	sub socketpipe() {
70			socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
71	root	1.140	or die "cannot establish bidirectional pipe: $!\n";
72	root	1.123
73			($fh1, $fh2)
74			}
75
76	root	1.127	sub background(&;&) {
77			my ($bg, $cb) = @_;
78	root	1.123
79	root	1.169	my ($fh_r, $fh_w) = DC::socketpipe;
80	root	1.123
81			my $pid = fork;
82
83			if (defined $pid && !$pid) {
84	root	1.124	local $SIG{__DIE__};
85	root	1.123
86			open STDOUT, ">&", $fh_w;
87			open STDERR, ">&", $fh_w;
88			close $fh_r;
89			close $fh_w;
90
91			$\| = 1;
92
93	root	1.127	eval { $bg->() };
94	root	1.124
95			if ($@) {
96			my $msg = $@;
97			$msg =~ s/\n+/\n/;
98			warn "FATAL: $msg";
99	root	1.169	DC::_exit 1;
100	root	1.124	}
101	root	1.123
102			# win32 is fucked up, of course. exit will clean stuff up,
103			# which destroys our database etc. _exit will exit ALL
104			# forked processes, because of the dreaded fork emulation.
105	root	1.169	DC::_exit 0;
106	root	1.123	}
107
108			close $fh_w;
109
110			my $buffer;
111
112	root	1.126	my $w; $w = AnyEvent->io (fh => $fh_r, poll => 'r', cb => sub {
113	root	1.123	unless (sysread $fh_r, $buffer, 4096, length $buffer) {
114	root	1.126	undef $w;
115	root	1.127	$cb->();
116			return;
117	root	1.123	}
118
119			while ($buffer =~ s/^(.*)\n//) {
120			my $line = $1;
121	root	1.124	$line =~ s/\s+$//;
122	root	1.123	utf8::decode $line;
123	root	1.127	if ($line =~ /^\x{e877}json_msg (.*)$/s) {
124	root	1.139	$cb->(JSON::XS->new->allow_nonref->decode ($1));
125	root	1.127	} else {
126			::message ({
127	root	1.169	markup => "background($pid): " . DC::asxml $line,
128	root	1.127	});
129			}
130	root	1.123	}
131			});
132			}
133
134	root	1.127	sub background_msg {
135			my ($msg) = @_;
136
137	root	1.139	$msg = "\x{e877}json_msg " . JSON::XS->new->allow_nonref->encode ($msg);
138	root	1.127	$msg =~ s/\n//g;
139			utf8::encode $msg;
140			print $msg, "\n";
141			}
142
143	root	1.169	package DC;
144	root	1.52
145	root	1.5	sub find_rcfile($) {
146			my $path;
147
148	root	1.46	for (grep !ref, @INC) {
149	root	1.168	$path = "$_/Deliantra/Client/private/resources/$_[0]";
150	root	1.5	return $path if -r $path;
151			}
152
153			die "FATAL: can't find required file $_[0]\n";
154			}
155
156			sub read_cfg {
157			my ($file) = @_;
158
159	root	1.107	open my $fh, $file
160	root	1.5	or return;
161
162			local $/;
163	root	1.107	my $CFG = <$fh>;
164	root	1.5
165	root	1.166	$::CFG = decode_json $CFG;
166	root	1.5	}
167
168			sub write_cfg {
169	root	1.178	my $file = "$Deliantra::VARDIR/client.cf";
170	root	1.5
171	root	1.107	$::CFG->{VERSION} = $::VERSION;
172
173			open my $fh, ">:utf8", $file
174	root	1.5	or return;
175	root	1.180	print $fh JSON::XS->new->utf8->pretty->encode ($::CFG);
176	root	1.5	}
177
178	root	1.122	sub http_proxy {
179			my @proxy = win32_proxy_info;
180
181			if (@proxy) {
182			"http://" . (@proxy < 2 ? "" : @proxy < 3 ? "$proxy[1]\@" : "$proxy[1]:$proxy[2]\@") . $proxy[0]
183			} elsif (exists $ENV{http_proxy}) {
184			$ENV{http_proxy}
185			} else {
186			()
187			}
188			}
189
190			sub set_proxy {
191			my $proxy = http_proxy
192			or return;
193
194			$ENV{http_proxy} = $proxy;
195			}
196
197	root	1.127	sub lwp_useragent {
198			require LWP::UserAgent;
199
200	root	1.169	DC::set_proxy;
201	root	1.127
202			my $ua = LWP::UserAgent->new (
203	root	1.171	agent => "deliantra $VERSION",
204	root	1.127	keep_alive => 1,
205			env_proxy => 1,
206			timeout => 30,
207			);
208			}
209
210			sub lwp_check($) {
211			my ($res) = @_;
212
213			$res->is_error
214			and die $res->status_line;
215
216			$res
217			}
218
219	root	1.141	sub fh_nonblocking($$) {
220			my ($fh, $nb) = @_;
221
222	root	1.142	if ($^O eq "MSWin32") {
223			$nb = (! ! $nb) + 0;
224	root	1.143	ioctl $fh, 0x8004667e, \$nb; # FIONBIO
225	root	1.141	} else {
226			fcntl $fh, &Fcntl::F_SETFL, $nb ? &Fcntl::O_NONBLOCK : 0;
227			}
228			}
229
230	root	1.169	package DC::Layout;
231	root	1.97
232	root	1.169	$DC::OpenGL::INIT_HOOK{"DC::Layout"} = sub {
233	root	1.164	glyph_cache_restore;
234			};
235
236	root	1.169	$DC::OpenGL::SHUTDOWN_HOOK{"DC::Layout"} = sub {
237	root	1.164	glyph_cache_backup;
238	root	1.97	};
239
240	root	1.1	1;
241
242			=back
243
244			=head1 AUTHOR
245
246			Marc Lehmann <schmorp@schmorp.de>
247			http://home.schmorp.de/
248
249			=cut
250