FilesystemLoader.php
8.58 KB
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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
<?php
/*
* This file is part of Twig.
*
* (c) Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Twig\Loader;
use Twig\Error\LoaderError;
use Twig\Source;
/**
* Loads template from the filesystem.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class FilesystemLoader implements LoaderInterface, ExistsLoaderInterface, SourceContextLoaderInterface
{
/** Identifier of the main namespace. */
const MAIN_NAMESPACE = '__main__';
protected $paths = [];
protected $cache = [];
protected $errorCache = [];
private $rootPath;
/**
* @param string|array $paths A path or an array of paths where to look for templates
* @param string|null $rootPath The root path common to all relative paths (null for getcwd())
*/
public function __construct($paths = [], $rootPath = null)
{
$this->rootPath = (null === $rootPath ? getcwd() : $rootPath).\DIRECTORY_SEPARATOR;
if (false !== $realPath = realpath($rootPath)) {
$this->rootPath = $realPath.\DIRECTORY_SEPARATOR;
}
if ($paths) {
$this->setPaths($paths);
}
}
/**
* Returns the paths to the templates.
*
* @param string $namespace A path namespace
*
* @return array The array of paths where to look for templates
*/
public function getPaths($namespace = self::MAIN_NAMESPACE)
{
return isset($this->paths[$namespace]) ? $this->paths[$namespace] : [];
}
/**
* Returns the path namespaces.
*
* The main namespace is always defined.
*
* @return array The array of defined namespaces
*/
public function getNamespaces()
{
return array_keys($this->paths);
}
/**
* Sets the paths where templates are stored.
*
* @param string|array $paths A path or an array of paths where to look for templates
* @param string $namespace A path namespace
*/
public function setPaths($paths, $namespace = self::MAIN_NAMESPACE)
{
if (!\is_array($paths)) {
$paths = [$paths];
}
$this->paths[$namespace] = [];
foreach ($paths as $path) {
$this->addPath($path, $namespace);
}
}
/**
* Adds a path where templates are stored.
*
* @param string $path A path where to look for templates
* @param string $namespace A path namespace
*
* @throws LoaderError
*/
public function addPath($path, $namespace = self::MAIN_NAMESPACE)
{
// invalidate the cache
$this->cache = $this->errorCache = [];
$checkPath = $this->isAbsolutePath($path) ? $path : $this->rootPath.$path;
if (!is_dir($checkPath)) {
throw new LoaderError(sprintf('The "%s" directory does not exist ("%s").', $path, $checkPath));
}
$this->paths[$namespace][] = rtrim($path, '/\\');
}
/**
* Prepends a path where templates are stored.
*
* @param string $path A path where to look for templates
* @param string $namespace A path namespace
*
* @throws LoaderError
*/
public function prependPath($path, $namespace = self::MAIN_NAMESPACE)
{
// invalidate the cache
$this->cache = $this->errorCache = [];
$checkPath = $this->isAbsolutePath($path) ? $path : $this->rootPath.$path;
if (!is_dir($checkPath)) {
throw new LoaderError(sprintf('The "%s" directory does not exist ("%s").', $path, $checkPath));
}
$path = rtrim($path, '/\\');
if (!isset($this->paths[$namespace])) {
$this->paths[$namespace][] = $path;
} else {
array_unshift($this->paths[$namespace], $path);
}
}
public function getSource($name)
{
@trigger_error(sprintf('Calling "getSource" on "%s" is deprecated since 1.27. Use getSourceContext() instead.', \get_class($this)), E_USER_DEPRECATED);
return file_get_contents($this->findTemplate($name));
}
public function getSourceContext($name)
{
$path = $this->findTemplate($name);
return new Source(file_get_contents($path), $name, $path);
}
public function getCacheKey($name)
{
$path = $this->findTemplate($name);
$len = \strlen($this->rootPath);
if (0 === strncmp($this->rootPath, $path, $len)) {
return substr($path, $len);
}
return $path;
}
public function exists($name)
{
$name = $this->normalizeName($name);
if (isset($this->cache[$name])) {
return true;
}
try {
return false !== $this->findTemplate($name, false);
} catch (LoaderError $e) {
@trigger_error(sprintf('In %s::findTemplate(), you must accept a second argument that when set to "false" returns "false" instead of throwing an exception. Not supporting this argument is deprecated since version 1.27.', \get_class($this)), E_USER_DEPRECATED);
return false;
}
}
public function isFresh($name, $time)
{
return filemtime($this->findTemplate($name)) < $time;
}
protected function findTemplate($name)
{
$throw = \func_num_args() > 1 ? func_get_arg(1) : true;
$name = $this->normalizeName($name);
if (isset($this->cache[$name])) {
return $this->cache[$name];
}
if (isset($this->errorCache[$name])) {
if (!$throw) {
return false;
}
throw new LoaderError($this->errorCache[$name]);
}
try {
$this->validateName($name);
list($namespace, $shortname) = $this->parseName($name);
} catch (LoaderError $e) {
if (!$throw) {
return false;
}
throw $e;
}
if (!isset($this->paths[$namespace])) {
$this->errorCache[$name] = sprintf('There are no registered paths for namespace "%s".', $namespace);
if (!$throw) {
return false;
}
throw new LoaderError($this->errorCache[$name]);
}
foreach ($this->paths[$namespace] as $path) {
if (!$this->isAbsolutePath($path)) {
$path = $this->rootPath.$path;
}
if (is_file($path.'/'.$shortname)) {
if (false !== $realpath = realpath($path.'/'.$shortname)) {
return $this->cache[$name] = $realpath;
}
return $this->cache[$name] = $path.'/'.$shortname;
}
}
$this->errorCache[$name] = sprintf('Unable to find template "%s" (looked into: %s).', $name, implode(', ', $this->paths[$namespace]));
if (!$throw) {
return false;
}
throw new LoaderError($this->errorCache[$name]);
}
protected function parseName($name, $default = self::MAIN_NAMESPACE)
{
if (isset($name[0]) && '@' == $name[0]) {
if (false === $pos = strpos($name, '/')) {
throw new LoaderError(sprintf('Malformed namespaced template name "%s" (expecting "@namespace/template_name").', $name));
}
$namespace = substr($name, 1, $pos - 1);
$shortname = substr($name, $pos + 1);
return [$namespace, $shortname];
}
return [$default, $name];
}
protected function normalizeName($name)
{
return preg_replace('#/{2,}#', '/', str_replace('\\', '/', (string) $name));
}
protected function validateName($name)
{
if (false !== strpos($name, "\0")) {
throw new LoaderError('A template name cannot contain NUL bytes.');
}
$name = ltrim($name, '/');
$parts = explode('/', $name);
$level = 0;
foreach ($parts as $part) {
if ('..' === $part) {
--$level;
} elseif ('.' !== $part) {
++$level;
}
if ($level < 0) {
throw new LoaderError(sprintf('Looks like you try to load a template outside configured directories (%s).', $name));
}
}
}
private function isAbsolutePath($file)
{
return strspn($file, '/\\', 0, 1)
|| (\strlen($file) > 3 && ctype_alpha($file[0])
&& ':' === substr($file, 1, 1)
&& strspn($file, '/\\', 2, 1)
)
|| null !== parse_url($file, PHP_URL_SCHEME)
;
}
}
class_alias('Twig\Loader\FilesystemLoader', 'Twig_Loader_Filesystem');