Verzeichnisstruktur phpBB-3.2.0
- Veröffentlicht
- 06.01.2017
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TwigEngine.php
001 <?php
002
003 /*
004 * This file is part of the Symfony package.
005 *
006 * (c) Fabien Potencier <fabien@symfony.com>
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 namespace Symfony\Bridge\Twig;
013
014 use Symfony\Component\Templating\EngineInterface;
015 use Symfony\Component\Templating\StreamingEngineInterface;
016 use Symfony\Component\Templating\TemplateNameParserInterface;
017 use Symfony\Component\Templating\TemplateReferenceInterface;
018
019 /**
020 * This engine knows how to render Twig templates.
021 *
022 * @author Fabien Potencier <fabien@symfony.com>
023 */
024 class TwigEngine implements EngineInterface, StreamingEngineInterface
025 {
026 protected $environment;
027 protected $parser;
028
029 /**
030 * Constructor.
031 *
032 * @param \Twig_Environment $environment A \Twig_Environment instance
033 * @param TemplateNameParserInterface $parser A TemplateNameParserInterface instance
034 */
035 public function __construct(\Twig_Environment $environment, TemplateNameParserInterface $parser)
036 {
037 $this->environment = $environment;
038 $this->parser = $parser;
039 }
040
041 /**
042 * {@inheritdoc}
043 *
044 * It also supports \Twig_Template as name parameter.
045 *
046 * @throws \Twig_Error if something went wrong like a thrown exception while rendering the template
047 */
048 public function render($name, array $parameters = array())
049 {
050 return $this->load($name)->render($parameters);
051 }
052
053 /**
054 * {@inheritdoc}
055 *
056 * It also supports \Twig_Template as name parameter.
057 *
058 * @throws \Twig_Error if something went wrong like a thrown exception while rendering the template
059 */
060 public function stream($name, array $parameters = array())
061 {
062 $this->load($name)->display($parameters);
063 }
064
065 /**
066 * {@inheritdoc}
067 *
068 * It also supports \Twig_Template as name parameter.
069 */
070 public function exists($name)
071 {
072 if ($name instanceof \Twig_Template) {
073 return true;
074 }
075
076 $loader = $this->environment->getLoader();
077
078 if ($loader instanceof \Twig_ExistsLoaderInterface) {
079 return $loader->exists((string) $name);
080 }
081
082 try {
083 // cast possible TemplateReferenceInterface to string because the
084 // EngineInterface supports them but Twig_LoaderInterface does not
085 $loader->getSource((string) $name);
086 } catch (\Twig_Error_Loader $e) {
087 return false;
088 }
089
090 return true;
091 }
092
093 /**
094 * {@inheritdoc}
095 *
096 * It also supports \Twig_Template as name parameter.
097 */
098 public function supports($name)
099 {
100 if ($name instanceof \Twig_Template) {
101 return true;
102 }
103
104 $template = $this->parser->parse($name);
105
106 return 'twig' === $template->get('engine');
107 }
108
109 /**
110 * Loads the given template.
111 *
112 * @param string|TemplateReferenceInterface|\Twig_Template $name A template name or an instance of
113 * TemplateReferenceInterface or \Twig_Template
114 *
115 * @return \Twig_TemplateInterface A \Twig_TemplateInterface instance
116 *
117 * @throws \InvalidArgumentException if the template does not exist
118 */
119 protected function load($name)
120 {
121 if ($name instanceof \Twig_Template) {
122 return $name;
123 }
124
125 try {
126 return $this->environment->loadTemplate((string) $name);
127 } catch (\Twig_Error_Loader $e) {
128 throw new \InvalidArgumentException($e->getMessage(), $e->getCode(), $e);
129 }
130 }
131 }
132