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<?php |
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namespace Jasny\View; |
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use Jasny\ViewInterface; |
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use Psr\Http\Message\ResponseInterface; |
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/** |
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* Abstraction use PHP templates as views with PSR-7 |
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*/ |
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class PHP implements ViewInterface |
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{ |
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/** |
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* @var string |
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*/ |
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protected $path; |
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/** |
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* @var string |
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*/ |
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protected $ext = 'php'; |
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/** |
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* Class constructor |
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* |
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* @param array $options |
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*/ |
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public function __construct(array $options) |
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{ |
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if (!isset($options['path'])) { |
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throw new \BadMethodCallException("'path' option is required"); |
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} |
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$this->path = $options['path']; |
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if (isset($options['ext'])) { |
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$this->ext = $options['ext']; |
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} |
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} |
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/** |
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* Get directory path. |
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* |
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* @return string |
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*/ |
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public function getPath() |
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{ |
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return $this->path; |
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} |
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/** |
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* Get the default file extension |
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* |
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* @return string |
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*/ |
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public function getExt() |
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{ |
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return $this->ext; |
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} |
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/** |
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* Expose a function to the view. |
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* |
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* @param string $name Function name in template |
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* @param callable|null $function |
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* @return $this |
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* @throws \BadMethodCallException if function can't be exposed |
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*/ |
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public function expose($name, $function = null) |
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{ |
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if (function_exists($name) && (!isset($function) || $name === $function)) { |
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return $this; |
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} |
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throw new \BadMethodCallException("Exposing functions under an alias isn't supported with PHP views"); |
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} |
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/** |
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* Get the path to a view file |
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* |
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* @param string $name |
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* @return string |
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*/ |
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protected function getFilePath($name) |
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{ |
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if (pathinfo($name, PATHINFO_EXTENSION) === '') { |
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$name .= (substr($name, -1) === '/' ? 'index' : '') . '.' . $this->getExt(); |
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} |
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return rtrim($this->path, '/') . '/' . ltrim($name, '/'); |
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} |
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/** |
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* Assert the filename and that the file exists |
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* |
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* @param string $name |
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* @throws \InvalidArgumentException |
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*/ |
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protected function assertFile($name) |
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{ |
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if (strpos($name, '..') !== false) { |
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throw new \InvalidArgumentException("File name '$name' isn't valid"); |
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} |
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$file = $this->getFilePath($name); |
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if (!file_exists($file)) { |
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throw new \RuntimeException("View file '$file' doesn't exist"); |
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} |
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} |
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/** |
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* Run the PHP script |
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* |
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* @param string $name |
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* @param array $context |
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*/ |
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protected function runScript($name, array $context) |
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{ |
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// Prevent $name and $context being available in the view script |
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$___ = $this->getFilePath($name); |
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$_context_ = $context; |
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unset($name, $context); |
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/** @see http://php.net/extract */ |
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extract($_context_); |
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unset($_context_); |
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include $___; |
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} |
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/** |
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* Render and output template |
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* |
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* @param ResponseInterface $response |
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* @param string $name Template name |
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* @param array $context Template context as associated array |
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* @return ResponseInterface |
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*/ |
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7 |
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public function render(ResponseInterface $response, $name, array $context = []) |
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{ |
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7 |
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$this->assertFile($name); |
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if (!$response->hasHeader('Content-Type')) { |
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$response = $response->withHeader('Content-Type', 'text/html'); |
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} |
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$body = $response->getBody(); |
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ob_start(function ($buffer) use ($body) { |
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$body->write($buffer); |
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}); |
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try { |
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$this->runScript($name, $context); |
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} finally { |
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ob_end_clean(); |
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} |
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5 |
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return $response; |
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} |
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} |
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jasny /
view
