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 Deliantra::Client; # work around CPAN breakage
package App::Deliantra; # try to reserve namespace
package DC;

use Carp ();

our $VERSION;

BEGIN {
   $VERSION = '0.9976';

   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:	1.193
Committed:	Fri Sep 5 15:24:10 2008 UTC (15 years, 8 months ago) by root
Branch:	MAIN
CVS Tags:	rel-0_9976
Changes since 1.192:	+2 -2 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	1.184	package Deliantra::Client; # work around CPAN breakage
16			package App::Deliantra; # try to reserve namespace
17	root	1.169	package DC;
18	root	1.1
19	root	1.121	use Carp ();
20
21	root	1.187	our $VERSION;
22
23	root	1.1	BEGIN {
24	root	1.193	$VERSION = '0.9976';
25	root	1.1
26	root	1.2	use XSLoader;
27	root	1.168	XSLoader::load "Deliantra::Client", $VERSION;
28	root	1.1	}
29
30	root	1.62	use utf8;
31	root	1.187	use strict qw(vars subs);
32	root	1.62
33	root	1.52	use AnyEvent ();
34	root	1.89	use Pod::POM ();
35	root	1.135	use File::Path ();
36	root	1.89	use Storable (); # finally
37	root	1.141	use Fcntl ();
38	root	1.159	use JSON::XS qw(encode_json decode_json);
39	root	1.127
40	root	1.103	=item guard { BLOCK }
41
42			Returns an object that executes the given block as soon as it is destroyed.
43
44			=cut
45
46			sub guard(&) {
47	root	1.169	bless \(my $cb = $_[0]), "DC::Guard"
48	root	1.103	}
49
50	root	1.169	sub DC::Guard::DESTROY {
51	root	1.103	${$_[0]}->()
52			}
53
54	root	1.133	=item shorten $string[, $maxlength]
55
56			=cut
57
58			sub shorten($;$) {
59			my ($str, $len) = @_;
60			substr $str, $len, (length $str), "..." if $len + 3 <= length $str;
61			$str
62			}
63
64	root	1.105	sub asxml($) {
65			local $_ = $_[0];
66	root	1.89
67	root	1.105	s/&/&/g;
68			s/>/>/g;
69			s/</</g;
70	root	1.89
71	root	1.105	$_
72	root	1.89	}
73
74	root	1.123	sub socketpipe() {
75	root	1.193	socketpair my $fh1, my $fh2, &Socket::AF_UNIX, &Socket::SOCK_STREAM, &Socket::PF_UNSPEC
76	root	1.140	or die "cannot establish bidirectional pipe: $!\n";
77	root	1.123
78			($fh1, $fh2)
79			}
80
81	root	1.127	sub background(&;&) {
82			my ($bg, $cb) = @_;
83	root	1.123
84	root	1.169	my ($fh_r, $fh_w) = DC::socketpipe;
85	root	1.123
86			my $pid = fork;
87
88			if (defined $pid && !$pid) {
89	root	1.124	local $SIG{__DIE__};
90	root	1.123
91			open STDOUT, ">&", $fh_w;
92			open STDERR, ">&", $fh_w;
93			close $fh_r;
94			close $fh_w;
95
96			$\| = 1;
97
98	root	1.127	eval { $bg->() };
99	root	1.124
100			if ($@) {
101			my $msg = $@;
102			$msg =~ s/\n+/\n/;
103			warn "FATAL: $msg";
104	root	1.169	DC::_exit 1;
105	root	1.124	}
106	root	1.123
107			# win32 is fucked up, of course. exit will clean stuff up,
108			# which destroys our database etc. _exit will exit ALL
109			# forked processes, because of the dreaded fork emulation.
110	root	1.169	DC::_exit 0;
111	root	1.123	}
112
113			close $fh_w;
114
115			my $buffer;
116
117	root	1.126	my $w; $w = AnyEvent->io (fh => $fh_r, poll => 'r', cb => sub {
118	root	1.123	unless (sysread $fh_r, $buffer, 4096, length $buffer) {
119	root	1.126	undef $w;
120	root	1.127	$cb->();
121			return;
122	root	1.123	}
123
124			while ($buffer =~ s/^(.*)\n//) {
125			my $line = $1;
126	root	1.124	$line =~ s/\s+$//;
127	root	1.123	utf8::decode $line;
128	root	1.127	if ($line =~ /^\x{e877}json_msg (.*)$/s) {
129	root	1.139	$cb->(JSON::XS->new->allow_nonref->decode ($1));
130	root	1.127	} else {
131			::message ({
132	root	1.169	markup => "background($pid): " . DC::asxml $line,
133	root	1.127	});
134			}
135	root	1.123	}
136			});
137			}
138
139	root	1.127	sub background_msg {
140			my ($msg) = @_;
141
142	root	1.139	$msg = "\x{e877}json_msg " . JSON::XS->new->allow_nonref->encode ($msg);
143	root	1.127	$msg =~ s/\n//g;
144			utf8::encode $msg;
145			print $msg, "\n";
146			}
147
148	root	1.169	package DC;
149	root	1.52
150	root	1.191	our $RC_THEME;
151	root	1.192	our %THEME;
152	root	1.191	our @RC_PATH;
153	root	1.187	our $RC_BASE;
154
155			for (grep !ref, @INC) {
156			$RC_BASE = "$_/Deliantra/Client/private/resources";
157			last if -d $RC_BASE;
158			}
159
160	root	1.5	sub find_rcfile($) {
161			my $path;
162
163	root	1.191	for (@RC_PATH, "") {
164	root	1.189	$path = "$RC_BASE/$_/$_[0]";
165			return $path if -r $path;
166			}
167	root	1.5
168	root	1.187	die "FATAL: can't find required file \"$_[0]\" in \"$RC_BASE\"\n";
169	root	1.5	}
170
171	root	1.192	sub load_json($) {
172			my ($file) = @_;
173
174			open my $fh, $file
175			or return;
176
177			local $/;
178			JSON::XS->new->utf8->relaxed->decode (<$fh>)
179			}
180
181	root	1.191	sub set_theme($) {
182			return if $RC_THEME eq $_[0];
183			$RC_THEME = $_[0];
184
185	root	1.192	# kind of hacky, find the main theme file, then load all theme files and merge them
186
187			%THEME = ();
188	root	1.191	@RC_PATH = "theme-$RC_THEME";
189
190	root	1.192	my $theme = load_json find_rcfile "theme.json"
191			or die "FATAL: theme resource file not found";
192	root	1.191
193	root	1.192	@RC_PATH = @{ $theme->{path} } if $theme->{path};
194
195			for (@RC_PATH, "") {
196			my $theme = load_json "$RC_BASE/$_/theme.json"
197			or next;
198
199			%THEME = ( %$theme, %THEME );
200	root	1.191	}
201			}
202
203	root	1.5	sub read_cfg {
204			my ($file) = @_;
205
206	root	1.192	$::CFG = load_json $file;
207	root	1.5	}
208
209			sub write_cfg {
210	root	1.178	my $file = "$Deliantra::VARDIR/client.cf";
211	root	1.5
212	root	1.107	$::CFG->{VERSION} = $::VERSION;
213
214			open my $fh, ">:utf8", $file
215	root	1.5	or return;
216	root	1.180	print $fh JSON::XS->new->utf8->pretty->encode ($::CFG);
217	root	1.5	}
218
219	root	1.122	sub http_proxy {
220			my @proxy = win32_proxy_info;
221
222			if (@proxy) {
223			"http://" . (@proxy < 2 ? "" : @proxy < 3 ? "$proxy[1]\@" : "$proxy[1]:$proxy[2]\@") . $proxy[0]
224			} elsif (exists $ENV{http_proxy}) {
225			$ENV{http_proxy}
226			} else {
227			()
228			}
229			}
230
231			sub set_proxy {
232			my $proxy = http_proxy
233			or return;
234
235			$ENV{http_proxy} = $proxy;
236			}
237
238	root	1.127	sub lwp_useragent {
239			require LWP::UserAgent;
240
241	root	1.169	DC::set_proxy;
242	root	1.127
243			my $ua = LWP::UserAgent->new (
244	root	1.171	agent => "deliantra $VERSION",
245	root	1.127	keep_alive => 1,
246			env_proxy => 1,
247			timeout => 30,
248			);
249			}
250
251			sub lwp_check($) {
252			my ($res) = @_;
253
254			$res->is_error
255			and die $res->status_line;
256
257			$res
258			}
259
260	root	1.141	sub fh_nonblocking($$) {
261			my ($fh, $nb) = @_;
262
263	root	1.142	if ($^O eq "MSWin32") {
264			$nb = (! ! $nb) + 0;
265	root	1.143	ioctl $fh, 0x8004667e, \$nb; # FIONBIO
266	root	1.141	} else {
267			fcntl $fh, &Fcntl::F_SETFL, $nb ? &Fcntl::O_NONBLOCK : 0;
268			}
269			}
270
271	root	1.169	package DC::Layout;
272	root	1.97
273	root	1.169	$DC::OpenGL::INIT_HOOK{"DC::Layout"} = sub {
274	root	1.164	glyph_cache_restore;
275			};
276
277	root	1.169	$DC::OpenGL::SHUTDOWN_HOOK{"DC::Layout"} = sub {
278	root	1.164	glyph_cache_backup;
279	root	1.97	};
280
281	root	1.1	1;
282
283			=back
284
285			=head1 AUTHOR
286
287			Marc Lehmann <schmorp@schmorp.de>
288			http://home.schmorp.de/
289
290			=cut
291