| 1 | =head1 NAME |
1 | =head1 NAME |
| 2 | |
2 | |
| 3 | CFClient - undocumented utility garbage for our crossfire client |
3 | CFPlus - undocumented utility garbage for our crossfire client |
| 4 | |
4 | |
| 5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
| 6 | |
6 | |
| 7 | use CFClient; |
7 | use CFPlus; |
| 8 | |
8 | |
| 9 | =head1 DESCRIPTION |
9 | =head1 DESCRIPTION |
| 10 | |
10 | |
| 11 | =over 4 |
11 | =over 4 |
| 12 | |
12 | |
| 13 | =cut |
13 | =cut |
| 14 | |
14 | |
| 15 | package CFClient; |
15 | package CFPlus; |
|
|
16 | |
|
|
17 | use Carp (); |
| 16 | |
18 | |
| 17 | BEGIN { |
19 | BEGIN { |
| 18 | $VERSION = '0.1'; |
20 | $VERSION = '0.97'; |
| 19 | |
21 | |
| 20 | use XSLoader; |
22 | use XSLoader; |
| 21 | XSLoader::load "CFClient", $VERSION; |
23 | XSLoader::load "CFPlus", $VERSION; |
| 22 | } |
24 | } |
| 23 | |
25 | |
|
|
26 | use utf8; |
|
|
27 | |
| 24 | use AnyEvent; |
28 | use AnyEvent (); |
| 25 | use BerkeleyDB; |
29 | use BerkeleyDB; |
| 26 | use SDL::OpenGL; |
30 | use Pod::POM (); |
|
|
31 | use File::Path (); |
|
|
32 | use Storable (); # finally |
| 27 | |
33 | |
| 28 | our %GL_EXT; |
34 | BEGIN { |
| 29 | our $GL_VERSION; |
35 | use Crossfire::Protocol::Base (); |
| 30 | |
36 | *to_json = \&Crossfire::Protocol::Base::to_json; |
| 31 | our $GL_NPOT; |
37 | *from_json = \&Crossfire::Protocol::Base::from_json; |
| 32 | |
|
|
| 33 | sub gl_init { |
|
|
| 34 | $GL_VERSION = gl_version * 1; |
|
|
| 35 | %GL_EXT = map +($_ => 1), split /\s+/, gl_extensions; |
|
|
| 36 | |
|
|
| 37 | $GL_NPOT = $GL_EXT{GL_ARB_texture_non_power_of_two} || $GL_VERSION >= 2; |
|
|
| 38 | |
|
|
| 39 | glEnable GL_TEXTURE_2D; |
|
|
| 40 | glEnable GL_COLOR_MATERIAL; |
|
|
| 41 | glShadeModel GL_FLAT; |
|
|
| 42 | glDisable GL_DEPTH_TEST; |
|
|
| 43 | glBlendFunc GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA; |
|
|
| 44 | |
|
|
| 45 | glHint GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST; |
|
|
| 46 | |
|
|
| 47 | CFClient::Texture::restore_state (); |
|
|
| 48 | } |
38 | } |
| 49 | |
39 | |
| 50 | sub find_rcfile($) { |
40 | =item guard { BLOCK } |
| 51 | my $path; |
|
|
| 52 | |
41 | |
| 53 | for (@INC) { |
42 | Returns an object that executes the given block as soon as it is destroyed. |
| 54 | $path = "$_/CFClient/resources/$_[0]"; |
43 | |
| 55 | return $path if -r $path; |
44 | =cut |
|
|
45 | |
|
|
46 | sub guard(&) { |
|
|
47 | bless \(my $cb = $_[0]), "CFPlus::Guard" |
|
|
48 | } |
|
|
49 | |
|
|
50 | sub CFPlus::Guard::DESTROY { |
|
|
51 | ${$_[0]}->() |
|
|
52 | } |
|
|
53 | |
|
|
54 | =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 | $str |
|
|
62 | } |
|
|
63 | |
|
|
64 | sub asxml($) { |
|
|
65 | local $_ = $_[0]; |
|
|
66 | |
|
|
67 | s/&/&/g; |
|
|
68 | s/>/>/g; |
|
|
69 | s/</</g; |
|
|
70 | |
|
|
71 | $_ |
|
|
72 | } |
|
|
73 | |
|
|
74 | sub socketpipe() { |
|
|
75 | socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC |
|
|
76 | or die "cannot establish bidiretcional pipe: $!\n"; |
|
|
77 | |
|
|
78 | ($fh1, $fh2) |
|
|
79 | } |
|
|
80 | |
|
|
81 | sub background(&;&) { |
|
|
82 | my ($bg, $cb) = @_; |
|
|
83 | |
|
|
84 | my ($fh_r, $fh_w) = CFPlus::socketpipe; |
|
|
85 | |
|
|
86 | my $pid = fork; |
|
|
87 | |
|
|
88 | if (defined $pid && !$pid) { |
|
|
89 | local $SIG{__DIE__}; |
|
|
90 | |
|
|
91 | open STDOUT, ">&", $fh_w; |
|
|
92 | open STDERR, ">&", $fh_w; |
|
|
93 | close $fh_r; |
|
|
94 | close $fh_w; |
|
|
95 | |
|
|
96 | $| = 1; |
|
|
97 | |
|
|
98 | eval { $bg->() }; |
|
|
99 | |
|
|
100 | if ($@) { |
|
|
101 | my $msg = $@; |
|
|
102 | $msg =~ s/\n+/\n/; |
|
|
103 | warn "FATAL: $msg"; |
|
|
104 | CFPlus::_exit 1; |
|
|
105 | } |
|
|
106 | |
|
|
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 | CFPlus::_exit 0; |
| 56 | } |
111 | } |
| 57 | |
112 | |
| 58 | die "FATAL: can't find required file $_[0]\n"; |
113 | close $fh_w; |
| 59 | } |
|
|
| 60 | |
114 | |
| 61 | sub read_cfg { |
115 | my $buffer; |
| 62 | my ($file) = @_; |
|
|
| 63 | |
116 | |
| 64 | open CFG, $file |
117 | my $w; $w = AnyEvent->io (fh => $fh_r, poll => 'r', cb => sub { |
|
|
118 | unless (sysread $fh_r, $buffer, 4096, length $buffer) { |
|
|
119 | undef $w; |
|
|
120 | $cb->(); |
| 65 | or return; |
121 | return; |
|
|
122 | } |
| 66 | |
123 | |
| 67 | my $CFG; |
124 | while ($buffer =~ s/^(.*)\n//) { |
| 68 | |
125 | my $line = $1; |
| 69 | local $/; |
126 | $line =~ s/\s+$//; |
| 70 | $CFG = eval <CFG>; |
127 | utf8::decode $line; |
| 71 | |
128 | if ($line =~ /^\x{e877}json_msg (.*)$/s) { |
| 72 | $::CFG = $CFG; |
129 | $cb->(from_json $1); |
| 73 | |
130 | } else { |
| 74 | close CFG; |
131 | ::message ({ |
|
|
132 | markup => "background($pid): " . CFPlus::asxml $line, |
|
|
133 | }); |
|
|
134 | } |
|
|
135 | } |
|
|
136 | }); |
| 75 | } |
137 | } |
| 76 | |
138 | |
| 77 | sub write_cfg { |
139 | sub background_msg { |
| 78 | my ($file) = @_; |
140 | my ($msg) = @_; |
| 79 | |
141 | |
| 80 | open CFG, ">$file" |
142 | $msg = "\x{e877}json_msg " . to_json $msg; |
| 81 | or return; |
143 | $msg =~ s/\n//g; |
| 82 | |
144 | utf8::encode $msg; |
| 83 | { |
145 | print $msg, "\n"; |
| 84 | require Data::Dumper; |
|
|
| 85 | local $Data::Dumper::Purity = 1; |
|
|
| 86 | $::CFG->{VERSION} = $::VERSION; |
|
|
| 87 | print CFG Data::Dumper->Dump ([$::CFG], [qw/CFG/]); |
|
|
| 88 | } |
|
|
| 89 | |
|
|
| 90 | close CFG; |
|
|
| 91 | } |
146 | } |
| 92 | |
147 | |
| 93 | mkdir "$Crossfire::VARDIR/pclient", 0777; |
|
|
| 94 | |
|
|
| 95 | our $DB_ENV = new BerkeleyDB::Env |
|
|
| 96 | -Home => "$Crossfire::VARDIR/pclient", |
|
|
| 97 | -Cachesize => 1_000_000, |
|
|
| 98 | -ErrFile => "/proc/self/fd/2", |
|
|
| 99 | -ErrPrefix => "DATABASE", |
|
|
| 100 | -Verbose => 1, |
|
|
| 101 | -Flags => DB_CREATE | DB_JOINENV | DB_RECOVER_FATAL | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_TXN, |
|
|
| 102 | or die "unable to create/open database home $Crossfire::VARDIR/pclient: $BerkeleyDB::Error"; |
|
|
| 103 | |
|
|
| 104 | sub db_table($) { |
|
|
| 105 | new CFClient::Database |
|
|
| 106 | -Env => $DB_ENV, |
|
|
| 107 | -Filename => "database", |
|
|
| 108 | -Subname => $_[0], |
|
|
| 109 | -Flags => DB_CREATE | DB_UPGRADE, |
|
|
| 110 | or die "unable to create/open database table $_[0]: $BerkeleyDB::Error"; |
|
|
| 111 | } |
|
|
| 112 | |
|
|
| 113 | package CFClient::Database; |
148 | package CFPlus::Database; |
| 114 | |
149 | |
| 115 | our @ISA = BerkeleyDB::Btree::; |
150 | our @ISA = BerkeleyDB::Btree::; |
| 116 | |
151 | |
| 117 | sub get($$) { |
152 | sub get($$) { |
| 118 | my $data; |
153 | my $data; |
| … | |
… | |
| 125 | my %DB_SYNC; |
160 | my %DB_SYNC; |
| 126 | |
161 | |
| 127 | sub put($$$) { |
162 | sub put($$$) { |
| 128 | my ($db, $key, $data) = @_; |
163 | my ($db, $key, $data) = @_; |
| 129 | |
164 | |
|
|
165 | my $hkey = $db + 0; |
|
|
166 | CFPlus::weaken $db; |
| 130 | $DB_SYNC{$db} = AnyEvent->timer (after => 5, cb => sub { $db->db_sync }); |
167 | $DB_SYNC{$hkey} ||= AnyEvent->timer (after => 5, cb => sub { |
|
|
168 | delete $DB_SYNC{$hkey}; |
|
|
169 | $db->db_sync if $db; |
|
|
170 | }); |
| 131 | |
171 | |
| 132 | $db->db_put ($key => $data) |
172 | $db->db_put ($key => $data) |
| 133 | } |
173 | } |
| 134 | |
174 | |
| 135 | package CFClient::Texture; |
175 | package CFPlus; |
| 136 | |
176 | |
| 137 | use strict; |
177 | sub find_rcfile($) { |
|
|
178 | my $path; |
| 138 | |
179 | |
| 139 | use Scalar::Util; |
180 | for (grep !ref, @INC) { |
|
|
181 | $path = "$_/CFPlus/resources/$_[0]"; |
|
|
182 | return $path if -r $path; |
|
|
183 | } |
| 140 | |
184 | |
| 141 | use SDL::OpenGL; |
185 | die "FATAL: can't find required file $_[0]\n"; |
| 142 | |
|
|
| 143 | my %TEXTURES; |
|
|
| 144 | |
|
|
| 145 | sub new { |
|
|
| 146 | my ($class, %data) = @_; |
|
|
| 147 | |
|
|
| 148 | my $self = bless { |
|
|
| 149 | internalformat => GL_RGBA, |
|
|
| 150 | format => GL_RGBA, |
|
|
| 151 | type => GL_UNSIGNED_BYTE, |
|
|
| 152 | %data, |
|
|
| 153 | }, $class; |
|
|
| 154 | |
|
|
| 155 | Scalar::Util::weaken ($TEXTURES{$self+0} = $self); |
|
|
| 156 | |
|
|
| 157 | $self->upload; |
|
|
| 158 | |
|
|
| 159 | $self |
|
|
| 160 | } |
186 | } |
| 161 | |
187 | |
| 162 | sub new_from_image { |
188 | sub read_cfg { |
| 163 | my ($class, $image, %arg) = @_; |
189 | my ($file) = @_; |
| 164 | |
190 | |
| 165 | $class->new (image => $image, %arg) |
191 | open my $fh, $file |
| 166 | } |
192 | or return; |
| 167 | |
|
|
| 168 | sub new_from_file { |
|
|
| 169 | my ($class, $path) = @_; |
|
|
| 170 | |
|
|
| 171 | open my $fh, "<:raw", $path |
|
|
| 172 | or die "$path: $!"; |
|
|
| 173 | |
193 | |
| 174 | local $/; |
194 | local $/; |
| 175 | $class->new_from_image (<$fh>) |
195 | my $CFG = <$fh>; |
| 176 | } |
|
|
| 177 | |
196 | |
| 178 | #sub new_from_surface { |
197 | if ($CFG =~ /^---/) { ## TODO compatibility cruft, remove |
| 179 | # my ($class, $surface) = @_; |
198 | require YAML; |
| 180 | # |
199 | utf8::decode $CFG; |
| 181 | # $surface->rgba; |
200 | $::CFG = YAML::Load ($CFG); |
| 182 | # |
201 | } elsif ($CFG =~ /^\{/) { |
| 183 | # $class->new ( |
202 | $::CFG = from_json $CFG; |
| 184 | # data => $surface->pixels, |
|
|
| 185 | # w => $surface->width, |
|
|
| 186 | # h => $surface->height, |
|
|
| 187 | # ) |
|
|
| 188 | #} |
|
|
| 189 | |
|
|
| 190 | sub new_from_layout { |
|
|
| 191 | my ($class, $layout) = @_; |
|
|
| 192 | |
|
|
| 193 | my ($w, $h, $data) = $layout->render; |
|
|
| 194 | |
|
|
| 195 | $class->new ( |
|
|
| 196 | w => $w, |
|
|
| 197 | h => $h, |
|
|
| 198 | data => $data, |
|
|
| 199 | internalformat => GL_ALPHA4, |
|
|
| 200 | format => GL_ALPHA, |
|
|
| 201 | type => GL_UNSIGNED_BYTE, |
|
|
| 202 | ) |
|
|
| 203 | } |
|
|
| 204 | |
|
|
| 205 | sub new_from_opengl { |
|
|
| 206 | my ($class, $w, $h, $cb) = @_; |
|
|
| 207 | |
|
|
| 208 | $class->new (w => $w, h => $h, render_cb => $cb) |
|
|
| 209 | } |
|
|
| 210 | |
|
|
| 211 | sub topot { |
|
|
| 212 | (grep $_ >= $_[0], 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768)[0] |
|
|
| 213 | } |
|
|
| 214 | |
|
|
| 215 | sub upload { |
|
|
| 216 | my ($self) = @_; |
|
|
| 217 | |
|
|
| 218 | return unless $GL_VERSION; |
|
|
| 219 | |
|
|
| 220 | my $data; |
|
|
| 221 | |
|
|
| 222 | if (exists $self->{data}) { |
|
|
| 223 | $data = $self->{data}; |
|
|
| 224 | |
|
|
| 225 | } elsif (exists $self->{render_cb}) { |
|
|
| 226 | glViewport 0, 0, $self->{w}, $self->{h}; |
|
|
| 227 | glMatrixMode GL_PROJECTION; |
|
|
| 228 | glLoadIdentity; |
|
|
| 229 | glOrtho 0, $self->{w}, 0, $self->{h}, -10000, 10000; |
|
|
| 230 | glMatrixMode GL_MODELVIEW; |
|
|
| 231 | glLoadIdentity; |
|
|
| 232 | $self->{render_cb}->($self, $self->{w}, $self->{h}); |
|
|
| 233 | |
|
|
| 234 | } else { |
203 | } else { |
| 235 | ($self->{w}, $self->{h}, $data, $self->{internalformat}, $self->{format}, $self->{type}) |
204 | $::CFG = eval $CFG; ## todo comaptibility cruft |
| 236 | = CFClient::load_image_inline $self->{image}; |
|
|
| 237 | } |
205 | } |
|
|
206 | } |
| 238 | |
207 | |
| 239 | my ($tw, $th) = @$self{qw(w h)}; |
208 | sub write_cfg { |
|
|
209 | my ($file) = @_; |
| 240 | |
210 | |
| 241 | unless ($tw && $th) { |
211 | $::CFG->{VERSION} = $::VERSION; |
| 242 | $tw = $th = 1; |
212 | |
| 243 | $data = "\x00" x 64; |
213 | open my $fh, ">:utf8", $file |
|
|
214 | or return; |
|
|
215 | print $fh to_json $::CFG; |
|
|
216 | } |
|
|
217 | |
|
|
218 | sub http_proxy { |
|
|
219 | my @proxy = win32_proxy_info; |
|
|
220 | |
|
|
221 | if (@proxy) { |
|
|
222 | "http://" . (@proxy < 2 ? "" : @proxy < 3 ? "$proxy[1]\@" : "$proxy[1]:$proxy[2]\@") . $proxy[0] |
|
|
223 | } elsif (exists $ENV{http_proxy}) { |
|
|
224 | $ENV{http_proxy} |
|
|
225 | } else { |
|
|
226 | () |
| 244 | } |
227 | } |
|
|
228 | } |
| 245 | |
229 | |
| 246 | $self->{minified} = [CFClient::average $tw, $th, $data] |
230 | sub set_proxy { |
| 247 | if $self->{minify}; |
231 | my $proxy = http_proxy |
|
|
232 | or return; |
| 248 | |
233 | |
| 249 | unless ($GL_NPOT) { |
234 | $ENV{http_proxy} = $proxy; |
| 250 | # TODO: does not work for zero-sized textures |
235 | } |
| 251 | $tw = topot $tw; |
|
|
| 252 | $th = topot $th; |
|
|
| 253 | |
236 | |
| 254 | if ($tw != $self->{w} || $th != $self->{h} && defined $data) { |
237 | sub lwp_useragent { |
| 255 | my $bpp = (length $data) / ($self->{w} * $self->{h}); |
238 | require LWP::UserAgent; |
| 256 | $data = pack "(a" . ($tw * $bpp) . ")*", |
|
|
| 257 | unpack "(a" . ($self->{w} * $bpp) . ")*", $data; |
|
|
| 258 | $data .= ("\x00" x ($tw * $bpp)) x ($th - $self->{h}); |
|
|
| 259 | } |
|
|
| 260 | } |
|
|
| 261 | |
|
|
| 262 | $self->{s} = $self->{w} / $tw; |
|
|
| 263 | $self->{t} = $self->{h} / $th; |
|
|
| 264 | |
|
|
| 265 | $self->{name} ||= (glGenTextures 1)->[0]; |
|
|
| 266 | |
|
|
| 267 | glBindTexture GL_TEXTURE_2D, $self->{name}; |
|
|
| 268 | |
|
|
| 269 | glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, $::FAST ? GL_NEAREST : GL_LINEAR; |
|
|
| 270 | glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, $::FAST ? GL_NEAREST : GL_LINEAR; |
|
|
| 271 | glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP; |
|
|
| 272 | glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP; |
|
|
| 273 | |
239 | |
| 274 | if (defined $data) { |
240 | CFPlus::set_proxy; |
| 275 | glTexImage2D GL_TEXTURE_2D, 0, |
241 | |
| 276 | $self->{internalformat}, |
242 | my $ua = LWP::UserAgent->new ( |
| 277 | $tw, $th, # need to pad texture first |
243 | agent => "cfplus $VERSION", |
| 278 | 0, |
244 | keep_alive => 1, |
| 279 | $self->{format}, |
245 | env_proxy => 1, |
| 280 | $self->{type}, |
246 | timeout => 30, |
| 281 | $data; |
247 | ); |
| 282 | glGetError and die; |
248 | } |
| 283 | } else { |
249 | |
| 284 | glCopyTexImage2D GL_TEXTURE_2D, 0, |
250 | sub lwp_check($) { |
| 285 | $self->{internalformat}, |
251 | my ($res) = @_; |
| 286 | 0, 0, |
252 | |
| 287 | $tw, $th, |
253 | $res->is_error |
|
|
254 | and die $res->status_line; |
|
|
255 | |
|
|
256 | $res |
|
|
257 | } |
|
|
258 | |
|
|
259 | our $DB_ENV; |
|
|
260 | our $DB_STATE; |
|
|
261 | |
|
|
262 | sub db_table($) { |
|
|
263 | my ($table) = @_; |
|
|
264 | |
|
|
265 | $table =~ s/([^a-zA-Z0-9_\-])/sprintf "=%x=", ord $1/ge; |
|
|
266 | |
|
|
267 | new CFPlus::Database |
|
|
268 | -Env => $DB_ENV, |
|
|
269 | -Filename => $table, |
|
|
270 | # -Filename => "database", |
|
|
271 | # -Subname => $table, |
|
|
272 | -Property => DB_CHKSUM, |
|
|
273 | -Flags => DB_CREATE | DB_UPGRADE, |
|
|
274 | or die "unable to create/open database table $_[0]: $BerkeleyDB::Error" |
|
|
275 | } |
|
|
276 | |
|
|
277 | our $DB_HOME = "$Crossfire::VARDIR/cfplus"; |
|
|
278 | |
|
|
279 | sub open_db { |
|
|
280 | use strict; |
|
|
281 | |
|
|
282 | mkdir $DB_HOME, 0777; |
|
|
283 | my $recover = $BerkeleyDB::db_version >= 4.4 |
|
|
284 | ? eval "DB_REGISTER | DB_RECOVER" |
| 288 | 0; |
285 | : 0; |
| 289 | glGetError and die "glCopyTexImage2D $tw,$th"; |
286 | |
|
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287 | $DB_ENV = new BerkeleyDB::Env |
|
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288 | -Home => $DB_HOME, |
|
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289 | -Cachesize => 1_000_000, |
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290 | -ErrFile => "$DB_HOME/errorlog.txt", |
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291 | # -ErrPrefix => "DATABASE", |
|
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292 | -Verbose => 1, |
|
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293 | -Flags => DB_CREATE | DB_RECOVER | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_TXN | $recover, |
|
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294 | -SetFlags => DB_AUTO_COMMIT | DB_LOG_AUTOREMOVE, |
|
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295 | or die "unable to create/open database home $DB_HOME: $BerkeleyDB::Error"; |
|
|
296 | |
|
|
297 | $DB_STATE = db_table "state"; |
|
|
298 | |
| 290 | } |
299 | 1 |
| 291 | } |
300 | } |
| 292 | |
301 | |
| 293 | sub DESTROY { |
302 | unless (eval { open_db }) { |
| 294 | my ($self) = @_; |
303 | File::Path::rmtree $DB_HOME; |
| 295 | |
304 | open_db; |
| 296 | delete $TEXTURES{$self+0}; |
|
|
| 297 | |
|
|
| 298 | glDeleteTextures delete $self->{name} |
|
|
| 299 | if $self->{name}; |
|
|
| 300 | } |
305 | } |
| 301 | |
306 | |
| 302 | sub restore_state{ |
307 | package CFPlus::Layout; |
| 303 | $_->upload |
308 | |
| 304 | for values %TEXTURES; |
309 | $CFPlus::OpenGL::SHUTDOWN_HOOK{"CFPlus::Layout"} = sub { |
|
|
310 | reset_glyph_cache; |
| 305 | }; |
311 | }; |
| 306 | |
312 | |
| 307 | 1; |
313 | 1; |
| 308 | |
314 | |
| 309 | =back |
315 | =back |
