|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* @file |
|
4
|
|
|
* Grafizzi\Graph\Renderer: a component of the Grafizzi library. |
|
5
|
|
|
* |
|
6
|
|
|
* (c) 2012 Frédéric G. MARAND <[email protected]> |
|
7
|
|
|
* |
|
8
|
|
|
* Grafizzi is free software: you can redistribute it and/or modify it under the |
|
9
|
|
|
* terms of the GNU Lesser General Public License as published by the Free |
|
10
|
|
|
* Software Foundation, either version 3 of the License, or (at your option) any |
|
11
|
|
|
* later version. |
|
12
|
|
|
* |
|
13
|
|
|
* Grafizzi is distributed in the hope that it will be useful, but WITHOUT ANY |
|
14
|
|
|
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
|
15
|
|
|
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
|
16
|
|
|
* details. |
|
17
|
|
|
* |
|
18
|
|
|
* You should have received a copy of the GNU Lesser General Public License |
|
19
|
|
|
* along with Grafizzi, in the COPYING.LESSER.txt file. If not, see |
|
20
|
|
|
* <http://www.gnu.org/licenses/> |
|
21
|
|
|
*/ |
|
22
|
|
|
|
|
23
|
|
|
namespace Grafizzi\Graph; |
|
24
|
|
|
|
|
25
|
|
|
use Grafizzi\Graph\Filter\AbstractFilter; |
|
26
|
|
|
use Pimple\Container; |
|
27
|
|
|
|
|
28
|
|
|
/** |
|
29
|
|
|
* A Renderer builds a rendering pipeline by instantiating Filters and providing |
|
30
|
|
|
* a pipe to chain invokations of their filter() methods. |
|
31
|
|
|
* |
|
32
|
|
|
* @method dot() |
|
33
|
|
|
* @method string() |
|
34
|
|
|
* @method sink() |
|
35
|
|
|
*/ |
|
36
|
|
|
class Renderer { |
|
37
|
|
|
|
|
38
|
|
|
/** |
|
39
|
|
|
* The dependency injection container. |
|
40
|
|
|
* |
|
41
|
|
|
* @var \Pimple\Container |
|
42
|
|
|
*/ |
|
43
|
|
|
public $dic; |
|
44
|
|
|
|
|
45
|
|
|
/** |
|
46
|
|
|
* The channel between filters. |
|
47
|
|
|
* |
|
48
|
|
|
* @var string |
|
49
|
|
|
*/ |
|
50
|
|
|
public $pipe = null; |
|
51
|
|
|
|
|
52
|
|
|
/** |
|
53
|
|
|
* Helper to enumerate GraphViz format filters on the current system. |
|
54
|
|
|
* |
|
55
|
|
|
* @throws \ErrorException |
|
56
|
|
|
* |
|
57
|
|
|
* @param \Pimple\container $dic |
|
58
|
|
|
* |
|
59
|
|
|
* @return string[] |
|
60
|
|
|
* An array of format names or false if dot cannot be run. |
|
61
|
|
|
*/ |
|
62
|
5 |
|
public static function getFormats(Container $dic) { |
|
63
|
5 |
|
$dotCommand = 'dot -Tinvalid'; |
|
64
|
5 |
|
$useExceptions = !empty($dic['use_exceptions']); |
|
65
|
|
|
$descriptorSpec = array( |
|
66
|
5 |
|
0 => array('pipe', 'r'), |
|
67
|
|
|
1 => array('pipe', 'w'), |
|
68
|
|
|
2 => array('pipe', 'w'), |
|
69
|
|
|
); |
|
70
|
|
|
|
|
71
|
5 |
|
$process = proc_open($dotCommand, $descriptorSpec, $pipes, NULL, NULL); |
|
72
|
5 |
|
if (!is_resource($process)) { |
|
73
|
|
|
if ($useExceptions) { |
|
74
|
|
|
throw new \ErrorException('GraphViz "dot" command could not be run.'); |
|
75
|
|
|
} |
|
76
|
|
|
// No need to define $formats otherwise: it is always defined further down. |
|
77
|
|
|
} |
|
78
|
|
|
|
|
79
|
5 |
|
fclose($pipes[0]); |
|
80
|
5 |
|
fclose($pipes[1]); |
|
81
|
5 |
|
$stderr = stream_get_contents($pipes[2]); |
|
82
|
5 |
|
proc_close($process); |
|
83
|
|
|
|
|
84
|
5 |
|
$sts = preg_match('/(.+):( .* )*/', $stderr, $matches); |
|
85
|
5 |
|
if (!$sts || count($matches) != 3) { |
|
86
|
|
|
if ($useExceptions) { |
|
87
|
|
|
throw new \ErrorException('GraphViz did not return a usable formats list.'); |
|
88
|
|
|
} |
|
89
|
|
|
else { |
|
90
|
|
|
$formats = array(); |
|
91
|
|
|
} |
|
92
|
|
|
} |
|
93
|
|
|
else { |
|
94
|
5 |
|
$formats = explode(' ', trim($matches[2])); |
|
95
|
|
|
} |
|
96
|
|
|
|
|
97
|
5 |
|
return $formats; |
|
98
|
|
|
} |
|
99
|
|
|
|
|
100
|
|
|
/** |
|
101
|
|
|
* Constructor. |
|
102
|
|
|
* |
|
103
|
|
|
* @param \Pimple\Container $dic |
|
104
|
|
|
*/ |
|
105
|
4 |
|
public function __construct(Container $dic) { |
|
106
|
4 |
|
$this->dic = $dic; |
|
107
|
4 |
|
} |
|
108
|
|
|
|
|
109
|
|
|
/** |
|
110
|
|
|
* Magic method: apply filter methods by simple name. |
|
111
|
|
|
* |
|
112
|
|
|
* @see Grafizzi\Graph\Filter\AbstractFilter::create() |
|
113
|
|
|
* |
|
114
|
|
|
* @param string $name |
|
115
|
|
|
* The simple name for a filter. Will be converted to an actual class name. |
|
116
|
|
|
* @param array $args |
|
117
|
|
|
* An array of arguments to pass to the filter method. |
|
118
|
|
|
* |
|
119
|
|
|
* @throws \DomainException |
|
120
|
|
|
* Throws exception if the filter name does not convert to a usable filter |
|
121
|
|
|
* class. |
|
122
|
|
|
* |
|
123
|
|
|
* @return $this |
|
124
|
|
|
*/ |
|
125
|
3 |
|
public function __call($name, $args) { |
|
126
|
|
|
|
|
127
|
3 |
|
$filter = isset($args[0]) |
|
128
|
2 |
|
? AbstractFilter::create($name, $args[0]) |
|
129
|
3 |
|
: AbstractFilter::create($name); |
|
130
|
|
|
|
|
131
|
2 |
|
if ($filter) { |
|
132
|
2 |
|
list($this->pipe, $err) = $filter->filter($this->pipe); |
|
133
|
2 |
|
if (!empty($err)) { |
|
134
|
2 |
|
$this->dic['logger']->debug($err); |
|
135
|
|
|
} |
|
136
|
|
|
} |
|
137
|
|
|
else { |
|
138
|
|
|
throw new \DomainException('Filter not found: ' . $name); |
|
139
|
|
|
} |
|
140
|
2 |
|
return $this; |
|
141
|
|
|
} |
|
142
|
|
|
} |
|
143
|
|
|
|
FGM /
grafizzi
