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<?php |
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namespace TreeHouse\IoBundle\Export; |
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use Symfony\Component\Templating\EngineInterface; |
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use Symfony\Component\Templating\TemplateReferenceInterface; |
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class FeedWriter |
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{ |
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/** |
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* @var EngineInterface |
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*/ |
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protected $templating; |
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/** |
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* @var string |
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*/ |
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protected $rootNode; |
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/** |
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* @var string |
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*/ |
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protected $itemNode; |
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/** |
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* @var null|resource |
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*/ |
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protected $pointer; |
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/** |
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* @param EngineInterface $templating |
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* @param string $rootNode |
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* @param string $itemNode |
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*/ |
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public function __construct(EngineInterface $templating, $rootNode, $itemNode) |
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{ |
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$this->templating = $templating; |
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$this->rootNode = $rootNode; |
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$this->itemNode = $itemNode; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isStarted() |
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{ |
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return is_resource($this->pointer); |
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} |
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/** |
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* @param string $filename |
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* @param string $namespaces |
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* |
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* @throws \RuntimeException |
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*/ |
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public function start($filename, $namespaces = '') |
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{ |
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if ($this->isStarted()) { |
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throw new \RuntimeException('Writer has already started'); |
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} |
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$this->pointer = fopen($filename, 'w'); |
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$this->writeStart($namespaces); |
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} |
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/** |
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* @throws \RuntimeException |
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*/ |
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public function finish() |
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{ |
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if (!$this->isStarted()) { |
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throw new \RuntimeException('Writer has not yet started'); |
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} |
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$this->writeEnd(); |
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fclose($this->pointer); |
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$this->pointer = null; |
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} |
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/** |
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* @param string $content |
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* |
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* @throws \RuntimeException |
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*/ |
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public function writeContent($content) |
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{ |
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if (!$this->isStarted()) { |
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throw new \RuntimeException('Writer has not yet started'); |
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} |
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fwrite($this->pointer, $content); |
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} |
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/** |
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* @param object $item |
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* @param string|TemplateReferenceInterface $template |
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* |
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* @throws \RuntimeException |
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*/ |
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public function writeItem($item, $template) |
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{ |
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$this->writeContent($this->renderItem($item, $template)); |
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} |
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/** |
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* @param object $item |
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* @param string|TemplateReferenceInterface $template |
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* |
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* @return string |
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*/ |
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public function renderItem($item, $template) |
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{ |
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return $this->templating->render($template, ['item' => $item, 'itemNode' => $this->itemNode]); |
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} |
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/** |
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* Writes the XML prolog. |
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* |
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* @param string $namespaces |
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*/ |
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protected function writeStart($namespaces = '') |
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{ |
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$this->writeContent('<?xml version="1.0" encoding="UTF-8"?>'); |
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$this->writeContent(sprintf('<%s%s>', $this->rootNode, rtrim(' ' . $namespaces))); |
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} |
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/** |
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* Writes the end part of the XML, closing the rootnode. |
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* |
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* @throws \RuntimeException If open() is not called yet |
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*/ |
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2 |
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protected function writeEnd() |
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{ |
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if (!$this->isStarted()) { |
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throw new \RuntimeException('Writer has not yet started'); |
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} |
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$this->writeContent(sprintf('</%s>', $this->rootNode)); |
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$this->rootNode = null; |
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} |
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} |
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treehouselabs /
io-bundle
