1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
<?php
/*
* This file is part of Twig.
*
* (c) 2011 Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* Loads templates from other loaders.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Twig_Loader_Chain implements Twig_LoaderInterface, Twig_ExistsLoaderInterface
{
private $hasSourceCache = array();
protected $loaders;
/**
* Constructor.
*
* @param Twig_LoaderInterface[] $loaders An array of loader instances
*/
public function __construct(array $loaders = array())
{
$this->loaders = array();
foreach ($loaders as $loader) {
$this->addLoader($loader);
}
}
/**
* Adds a loader instance.
*
* @param Twig_LoaderInterface $loader A Loader instance
*/
public function addLoader(Twig_LoaderInterface $loader)
{
$this->loaders[] = $loader;
$this->hasSourceCache = array();
}
/**
* {@inheritdoc}
*/
public function getSource($name)
{
$exceptions = array();
foreach ($this->loaders as $loader) {
if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
continue;
}
try {
return $loader->getSource($name);
} catch (Twig_Error_Loader $e) {
$exceptions[] = $e->getMessage();
}
}
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined (%s).', $name, implode(', ', $exceptions)));
}
/**
* {@inheritdoc}
*/
public function exists($name)
{
$name = (string) $name;
if (isset($this->hasSourceCache[$name])) {
return $this->hasSourceCache[$name];
}
foreach ($this->loaders as $loader) {
if ($loader instanceof Twig_ExistsLoaderInterface) {
if ($loader->exists($name)) {
return $this->hasSourceCache[$name] = true;
}
continue;
}
try {
$loader->getSource($name);
return $this->hasSourceCache[$name] = true;
} catch (Twig_Error_Loader $e) {
}
}
return $this->hasSourceCache[$name] = false;
}
/**
* {@inheritdoc}
*/
public function getCacheKey($name)
{
$exceptions = array();
foreach ($this->loaders as $loader) {
if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
continue;
}
try {
return $loader->getCacheKey($name);
} catch (Twig_Error_Loader $e) {
$exceptions[] = get_class($loader).': '.$e->getMessage();
}
}
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined (%s).', $name, implode(' ', $exceptions)));
}
/**
* {@inheritdoc}
*/
public function isFresh($name, $time)
{
$exceptions = array();
foreach ($this->loaders as $loader) {
if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
continue;
}
try {
return $loader->isFresh($name, $time);
} catch (Twig_Error_Loader $e) {
$exceptions[] = get_class($loader).': '.$e->getMessage();
}
}
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined (%s).', $name, implode(' ', $exceptions)));
}
}
|
