twig implementation

vendor/symfony/twig-bridge/Symfony/Bridge/Twig/Extension/CodeExtension.php

@@ -0,0 +1,232 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig\Extension;
+
+if (!defined('ENT_SUBSTITUTE')) {
+    define('ENT_SUBSTITUTE', 8);
+}
+
+/**
+ * Twig extension relate to PHP code and used by the profiler and the default exception templates.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class CodeExtension extends \Twig_Extension
+{
+    private $fileLinkFormat;
+    private $rootDir;
+    private $charset;
+
+    /**
+     * Constructor.
+     *
+     * @param string $fileLinkFormat The format for links to source files
+     * @param string $rootDir        The project root directory
+     * @param string $charset        The charset
+     */
+    public function __construct($fileLinkFormat, $rootDir, $charset)
+    {
+        $this->fileLinkFormat = empty($fileLinkFormat) ? ini_get('xdebug.file_link_format') : $fileLinkFormat;
+        $this->rootDir = str_replace('\\', '/', $rootDir).'/';
+        $this->charset = $charset;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFilters()
+    {
+        return array(
+            'abbr_class'            => new \Twig_Filter_Method($this, 'abbrClass', array('is_safe' => array('html'))),
+            'abbr_method'           => new \Twig_Filter_Method($this, 'abbrMethod', array('is_safe' => array('html'))),
+            'format_args'           => new \Twig_Filter_Method($this, 'formatArgs', array('is_safe' => array('html'))),
+            'format_args_as_text'   => new \Twig_Filter_Method($this, 'formatArgsAsText'),
+            'file_excerpt'          => new \Twig_Filter_Method($this, 'fileExcerpt', array('is_safe' => array('html'))),
+            'format_file'           => new \Twig_Filter_Method($this, 'formatFile', array('is_safe' => array('html'))),
+            'format_file_from_text' => new \Twig_Filter_Method($this, 'formatFileFromText', array('is_safe' => array('html'))),
+            'file_link'             => new \Twig_Filter_Method($this, 'getFileLink', array('is_safe' => array('html'))),
+        );
+    }
+
+    public function abbrClass($class)
+    {
+        $parts = explode('\\', $class);
+        $short = array_pop($parts);
+
+        return sprintf("<abbr title=\"%s\">%s</abbr>", $class, $short);
+    }
+
+    public function abbrMethod($method)
+    {
+        if (false !== strpos($method, '::')) {
+            list($class, $method) = explode('::', $method, 2);
+            $result = sprintf("%s::%s()", $this->abbrClass($class), $method);
+        } elseif ('Closure' === $method) {
+            $result = sprintf("<abbr title=\"%s\">%s</abbr>", $method, $method);
+        } else {
+            $result = sprintf("<abbr title=\"%s\">%s</abbr>()", $method, $method);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Formats an array as a string.
+     *
+     * @param array $args The argument array
+     *
+     * @return string
+     */
+    public function formatArgs($args)
+    {
+        $result = array();
+        foreach ($args as $key => $item) {
+            if ('object' === $item[0]) {
+                $parts = explode('\\', $item[1]);
+                $short = array_pop($parts);
+                $formattedValue = sprintf("<em>object</em>(<abbr title=\"%s\">%s</abbr>)", $item[1], $short);
+            } elseif ('array' === $item[0]) {
+                $formattedValue = sprintf("<em>array</em>(%s)", is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]);
+            } elseif ('string'  === $item[0]) {
+                $formattedValue = sprintf("'%s'", htmlspecialchars($item[1], ENT_QUOTES, $this->charset));
+            } elseif ('null' === $item[0]) {
+                $formattedValue = '<em>null</em>';
+            } elseif ('boolean' === $item[0]) {
+                $formattedValue = '<em>'.strtolower(var_export($item[1], true)).'</em>';
+            } elseif ('resource' === $item[0]) {
+                $formattedValue = '<em>resource</em>';
+            } else {
+                $formattedValue = str_replace("\n", '', var_export(htmlspecialchars((string) $item[1], ENT_QUOTES, $this->charset), true));
+            }
+
+            $result[] = is_int($key) ? $formattedValue : sprintf("'%s' => %s", $key, $formattedValue);
+        }
+
+        return implode(', ', $result);
+    }
+
+    /**
+     * Formats an array as a string.
+     *
+     * @param array $args The argument array
+     *
+     * @return string
+     */
+    public function formatArgsAsText($args)
+    {
+        return strip_tags($this->formatArgs($args));
+    }
+
+    /**
+     * Returns an excerpt of a code file around the given line number.
+     *
+     * @param string $file A file path
+     * @param int    $line The selected line number
+     *
+     * @return string An HTML string
+     */
+    public function fileExcerpt($file, $line)
+    {
+        if (is_readable($file)) {
+            $code = highlight_file($file, true);
+            // remove main code/span tags
+            $code = preg_replace('#^<code.*?>\s*<span.*?>(.*)</span>\s*</code>#s', '\\1', $code);
+            $content = preg_split('#<br />#', $code);
+
+            $lines = array();
+            for ($i = max($line - 3, 1), $max = min($line + 3, count($content)); $i <= $max; $i++) {
+                $lines[] = '<li'.($i == $line ? ' class="selected"' : '').'><code>'.self::fixCodeMarkup($content[$i - 1]).'</code></li>';
+            }
+
+            return '<ol start="'.max($line - 3, 1).'">'.implode("\n", $lines).'</ol>';
+        }
+    }
+
+    /**
+     * Formats a file path.
+     *
+     * @param string  $file An absolute file path
+     * @param integer $line The line number
+     * @param string  $text Use this text for the link rather than the file path
+     *
+     * @return string
+     */
+    public function formatFile($file, $line, $text = null)
+    {
+        if (null === $text) {
+            $file = trim($file);
+            $text = $file;
+            if (0 === strpos($text, $this->rootDir)) {
+                $text = str_replace($this->rootDir, '', str_replace('\\', '/', $text));
+                $text = sprintf('<abbr title="%s">kernel.root_dir</abbr>/%s', $this->rootDir, $text);
+            }
+        }
+
+        $text = "$text at line $line";
+
+        if (false !== $link = $this->getFileLink($file, $line)) {
+            return sprintf('<a href="%s" title="Click to open this file" class="file_link">%s</a>', htmlspecialchars($link, ENT_QUOTES | ENT_SUBSTITUTE, $this->charset), $text);
+        }
+
+        return $text;
+    }
+
+    /**
+     * Returns the link for a given file/line pair.
+     *
+     * @param string  $file An absolute file path
+     * @param integer $line The line number
+     *
+     * @return string A link of false
+     */
+    public function getFileLink($file, $line)
+    {
+        if ($this->fileLinkFormat && is_file($file)) {
+            return strtr($this->fileLinkFormat, array('%f' => $file, '%l' => $line));
+        }
+
+        return false;
+    }
+
+    public function formatFileFromText($text)
+    {
+        $that = $this;
+
+        return preg_replace_callback('/in ("|&quot;)?(.+?)\1(?: +(?:on|at))? +line (\d+)/s', function ($match) use ($that) {
+            return 'in '.$that->formatFile($match[2], $match[3]);
+        }, $text);
+    }
+
+    public function getName()
+    {
+        return 'code';
+    }
+
+    protected static function fixCodeMarkup($line)
+    {
+        // </span> ending tag from previous line
+        $opening = strpos($line, '<span');
+        $closing = strpos($line, '</span>');
+        if (false !== $closing && (false === $opening || $closing < $opening)) {
+            $line = substr_replace($line, '', $closing, 7);
+        }
+
+        // missing </span> tag at the end of line
+        $opening = strpos($line, '<span');
+        $closing = strpos($line, '</span>');
+        if (false !== $opening && (false === $closing || $closing > $opening)) {
+            $line .= '</span>';
+        }
+
+        return $line;
+    }
+}

vendor/symfony/twig-bridge/Symfony/Bridge/Twig/Extension/FormExtension.php

@@ -0,0 +1,136 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig\Extension;
+
+use Symfony\Bridge\Twig\TokenParser\FormThemeTokenParser;
+use Symfony\Bridge\Twig\Form\TwigRendererInterface;
+use Symfony\Component\Form\Extension\Core\View\ChoiceView;
+
+/**
+ * FormExtension extends Twig with form capabilities.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class FormExtension extends \Twig_Extension
+{
+    /**
+     * This property is public so that it can be accessed directly from compiled
+     * templates without having to call a getter, which slightly decreases performance.
+     *
+     * @var TwigRendererInterface
+     */
+    public $renderer;
+
+    public function __construct(TwigRendererInterface $renderer)
+    {
+        $this->renderer = $renderer;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function initRuntime(\Twig_Environment $environment)
+    {
+        $this->renderer->setEnvironment($environment);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getTokenParsers()
+    {
+        return array(
+            // {% form_theme form "SomeBundle::widgets.twig" %}
+            new FormThemeTokenParser(),
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFunctions()
+    {
+        return array(
+            'form_enctype' => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\FormEnctypeNode', array('is_safe' => array('html'))),
+            'form_widget'  => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', array('is_safe' => array('html'))),
+            'form_errors'  => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', array('is_safe' => array('html'))),
+            'form_label'   => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', array('is_safe' => array('html'))),
+            'form_row'     => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', array('is_safe' => array('html'))),
+            'form_rest'    => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', array('is_safe' => array('html'))),
+            'form'         => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\RenderBlockNode', array('is_safe' => array('html'))),
+            'form_start'   => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\RenderBlockNode', array('is_safe' => array('html'))),
+            'form_end'     => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\RenderBlockNode', array('is_safe' => array('html'))),
+            'csrf_token'   => new \Twig_Function_Method($this, 'renderer->renderCsrfToken'),
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFilters()
+    {
+        return array(
+            'humanize' => new \Twig_Filter_Method($this, 'renderer->humanize'),
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getTests()
+    {
+        return array(
+            'selectedchoice' => new \Twig_Test_Method($this, 'isSelectedChoice'),
+        );
+    }
+
+    /**
+     * Returns whether a choice is selected for a given form value.
+     *
+     * Unfortunately Twig does not support an efficient way to execute the
+     * "is_selected" closure passed to the template by ChoiceType. It is faster
+     * to implement the logic here (around 65ms for a specific form).
+     *
+     * Directly implementing the logic here is also faster than doing so in
+     * ChoiceView (around 30ms).
+     *
+     * The worst option tested so far is to implement the logic in ChoiceView
+     * and access the ChoiceView method directly in the template. Doing so is
+     * around 220ms slower than doing the method call here in the filter. Twig
+     * seems to be much more efficient at executing filters than at executing
+     * methods of an object.
+     *
+     * @param ChoiceView   $choice        The choice to check.
+     * @param string|array $selectedValue The selected value to compare.
+     *
+     * @return Boolean Whether the choice is selected.
+     *
+     * @see ChoiceView::isSelected()
+     */
+    public function isSelectedChoice(ChoiceView $choice, $selectedValue)
+    {
+        if (is_array($selectedValue)) {
+            return false !== array_search($choice->value, $selectedValue, true);
+        }
+
+        return $choice->value === $selectedValue;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return 'form';
+    }
+}

vendor/symfony/twig-bridge/Symfony/Bridge/Twig/Extension/HttpKernelExtension.php

@@ -0,0 +1,88 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig\Extension;
+
+use Symfony\Component\HttpKernel\Fragment\FragmentHandler;
+use Symfony\Component\HttpKernel\Controller\ControllerReference;
+
+/**
+ * Provides integration with the HttpKernel component.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class HttpKernelExtension extends \Twig_Extension
+{
+    private $handler;
+
+    /**
+     * Constructor.
+     *
+     * @param FragmentHandler $handler A FragmentHandler instance
+     */
+    public function __construct(FragmentHandler $handler)
+    {
+        $this->handler = $handler;
+    }
+
+    public function getFunctions()
+    {
+        return array(
+            'render'     => new \Twig_Function_Method($this, 'renderFragment', array('is_safe' => array('html'))),
+            'render_*'   => new \Twig_Function_Method($this, 'renderFragmentStrategy', array('is_safe' => array('html'))),
+            'controller' => new \Twig_Function_Method($this, 'controller'),
+        );
+    }
+
+    /**
+     * Renders a fragment.
+     *
+     * @param string|ControllerReference $uri      A URI as a string or a ControllerReference instance
+     * @param array                      $options  An array of options
+     *
+     * @return string The fragment content
+     *
+     * @see Symfony\Component\HttpKernel\Fragment\FragmentHandler::render()
+     */
+    public function renderFragment($uri, $options = array())
+    {
+        $strategy = isset($options['strategy']) ? $options['strategy'] : 'inline';
+        unset($options['strategy']);
+
+        return $this->handler->render($uri, $strategy, $options);
+    }
+
+    /**
+     * Renders a fragment.
+     *
+     * @param string                     $strategy A strategy name
+     * @param string|ControllerReference $uri      A URI as a string or a ControllerReference instance
+     * @param array                      $options  An array of options
+     *
+     * @return string The fragment content
+     *
+     * @see Symfony\Component\HttpKernel\Fragment\FragmentHandler::render()
+     */
+    public function renderFragmentStrategy($strategy, $uri, $options = array())
+    {
+        return $this->handler->render($uri, $strategy, $options);
+    }
+
+    public function controller($controller, $attributes = array(), $query = array())
+    {
+        return new ControllerReference($controller, $attributes, $query);
+    }
+
+    public function getName()
+    {
+        return 'http_kernel';
+    }
+}

vendor/symfony/twig-bridge/Symfony/Bridge/Twig/Extension/RoutingExtension.php

@@ -0,0 +1,100 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig\Extension;
+
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+
+/**
+ * Provides integration of the Routing component with Twig.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class RoutingExtension extends \Twig_Extension
+{
+    private $generator;
+
+    public function __construct(UrlGeneratorInterface $generator)
+    {
+        $this->generator = $generator;
+    }
+
+    /**
+     * Returns a list of functions to add to the existing list.
+     *
+     * @return array An array of functions
+     */
+    public function getFunctions()
+    {
+        return array(
+            'url'  => new \Twig_Function_Method($this, 'getUrl', array('is_safe_callback' => array($this, 'isUrlGenerationSafe'))),
+            'path' => new \Twig_Function_Method($this, 'getPath', array('is_safe_callback' => array($this, 'isUrlGenerationSafe'))),
+        );
+    }
+
+    public function getPath($name, $parameters = array(), $relative = false)
+    {
+        return $this->generator->generate($name, $parameters, $relative ? UrlGeneratorInterface::RELATIVE_PATH : UrlGeneratorInterface::ABSOLUTE_PATH);
+    }
+
+    public function getUrl($name, $parameters = array(), $schemeRelative = false)
+    {
+        return $this->generator->generate($name, $parameters, $schemeRelative ? UrlGeneratorInterface::NETWORK_PATH : UrlGeneratorInterface::ABSOLUTE_URL);
+    }
+
+    /**
+     * Determines at compile time whether the generated URL will be safe and thus
+     * saving the unneeded automatic escaping for performance reasons.
+     *
+     * The URL generation process percent encodes non-alphanumeric characters. So there is no risk
+     * that malicious/invalid characters are part of the URL. The only character within an URL that
+     * must be escaped in html is the ampersand ("&") which separates query params. So we cannot mark
+     * the URL generation as always safe, but only when we are sure there won't be multiple query
+     * params. This is the case when there are none or only one constant parameter given.
+     * E.g. we know beforehand this will be safe:
+     * - path('route')
+     * - path('route', {'param': 'value'})
+     * But the following may not:
+     * - path('route', var)
+     * - path('route', {'param': ['val1', 'val2'] }) // a sub-array
+     * - path('route', {'param1': 'value1', 'param2': 'value2'})
+     * If param1 and param2 reference placeholder in the route, it would still be safe. But we don't know.
+     *
+     * @param \Twig_Node $argsNode The arguments of the path/url function
+     *
+     * @return array An array with the contexts the URL is safe
+     */
+    public function isUrlGenerationSafe(\Twig_Node $argsNode)
+    {
+        // support named arguments
+        $paramsNode = $argsNode->hasNode('parameters') ? $argsNode->getNode('parameters') : (
+            $argsNode->hasNode(1) ? $argsNode->getNode(1) : null
+        );
+
+        if (null === $paramsNode || $paramsNode instanceof \Twig_Node_Expression_Array && count($paramsNode) <= 2 &&
+            (!$paramsNode->hasNode(1) || $paramsNode->getNode(1) instanceof \Twig_Node_Expression_Constant)
+        ) {
+            return array('html');
+        }
+
+        return array();
+    }
+
+    /**
+     * Returns the name of the extension.
+     *
+     * @return string The extension name
+     */
+    public function getName()
+    {
+        return 'routing';
+    }
+}

vendor/symfony/twig-bridge/Symfony/Bridge/Twig/Extension/SecurityExtension.php

@@ -0,0 +1,63 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig\Extension;
+
+use Symfony\Component\Security\Acl\Voter\FieldVote;
+use Symfony\Component\Security\Core\SecurityContextInterface;
+
+/**
+ * SecurityExtension exposes security context features.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class SecurityExtension extends \Twig_Extension
+{
+    private $context;
+
+    public function __construct(SecurityContextInterface $context = null)
+    {
+        $this->context = $context;
+    }
+
+    public function isGranted($role, $object = null, $field = null)
+    {
+        if (null === $this->context) {
+            return false;
+        }
+
+        if (null !== $field) {
+            $object = new FieldVote($object, $field);
+        }
+
+        return $this->context->isGranted($role, $object);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFunctions()
+    {
+        return array(
+            'is_granted' => new \Twig_Function_Method($this, 'isGranted'),
+        );
+    }
+
+    /**
+     * Returns the name of the extension.
+     *
+     * @return string The extension name
+     */
+    public function getName()
+    {
+        return 'security';
+    }
+}

vendor/symfony/twig-bridge/Symfony/Bridge/Twig/Extension/TranslationExtension.php

@@ -0,0 +1,118 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig\Extension;
+
+use Symfony\Bridge\Twig\TokenParser\TransTokenParser;
+use Symfony\Bridge\Twig\TokenParser\TransChoiceTokenParser;
+use Symfony\Bridge\Twig\TokenParser\TransDefaultDomainTokenParser;
+use Symfony\Component\Translation\TranslatorInterface;
+use Symfony\Bridge\Twig\NodeVisitor\TranslationNodeVisitor;
+use Symfony\Bridge\Twig\NodeVisitor\TranslationDefaultDomainNodeVisitor;
+
+/**
+ * Provides integration of the Translation component with Twig.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class TranslationExtension extends \Twig_Extension
+{
+    private $translator;
+    private $translationNodeVisitor;
+
+    public function __construct(TranslatorInterface $translator, \Twig_NodeVisitorInterface $translationNodeVisitor = null)
+    {
+        if (!$translationNodeVisitor) {
+            $translationNodeVisitor = new TranslationNodeVisitor();
+        }
+
+        $this->translator = $translator;
+        $this->translationNodeVisitor = $translationNodeVisitor;
+    }
+
+    public function getTranslator()
+    {
+        return $this->translator;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFilters()
+    {
+        return array(
+            'trans' => new \Twig_Filter_Method($this, 'trans'),
+            'transchoice' => new \Twig_Filter_Method($this, 'transchoice'),
+        );
+    }
+
+    /**
+     * Returns the token parser instance to add to the existing list.
+     *
+     * @return array An array of Twig_TokenParser instances
+     */
+    public function getTokenParsers()
+    {
+        return array(
+            // {% trans %}Symfony is great!{% endtrans %}
+            new TransTokenParser(),
+
+            // {% transchoice count %}
+            //     {0} There is no apples|{1} There is one apple|]1,Inf] There is {{ count }} apples
+            // {% endtranschoice %}
+            new TransChoiceTokenParser(),
+
+            // {% trans_default_domain "foobar" %}
+            new TransDefaultDomainTokenParser(),
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getNodeVisitors()
+    {
+        return array($this->translationNodeVisitor, new TranslationDefaultDomainNodeVisitor());
+    }
+
+    public function getTranslationNodeVisitor()
+    {
+        return $this->translationNodeVisitor;
+    }
+
+    public function trans($message, array $arguments = array(), $domain = null, $locale = null)
+    {
+        if (null === $domain) {
+            $domain = 'messages';
+        }
+
+        return $this->translator->trans($message, $arguments, $domain, $locale);
+    }
+
+    public function transchoice($message, $count, array $arguments = array(), $domain = null, $locale = null)
+    {
+        if (null === $domain) {
+            $domain = 'messages';
+        }
+
+        return $this->translator->transChoice($message, $count, array_merge(array('%count%' => $count), $arguments), $domain, $locale);
+    }
+
+    /**
+     * Returns the name of the extension.
+     *
+     * @return string The extension name
+     */
+    public function getName()
+    {
+        return 'translator';
+    }
+}

vendor/symfony/twig-bridge/Symfony/Bridge/Twig/Extension/YamlExtension.php

@@ -0,0 +1,67 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig\Extension;
+
+use Symfony\Component\Yaml\Dumper as YamlDumper;
+
+/**
+ * Provides integration of the Yaml component with Twig.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class YamlExtension extends \Twig_Extension
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getFilters()
+    {
+        return array(
+            'yaml_encode' => new \Twig_Filter_Method($this, 'encode'),
+            'yaml_dump'   => new \Twig_Filter_Method($this, 'dump'),
+        );
+    }
+
+    public function encode($input, $inline = 0, $dumpObjects = false)
+    {
+        static $dumper;
+
+        if (null === $dumper) {
+            $dumper = new YamlDumper();
+        }
+
+        return $dumper->dump($input, $inline, false, $dumpObjects);
+    }
+
+    public function dump($value, $inline = 0, $dumpObjects = false)
+    {
+        if (is_resource($value)) {
+            return '%Resource%';
+        }
+
+        if (is_array($value) || is_object($value)) {
+            return '%'.gettype($value).'% '.$this->encode($value, $inline, $dumpObjects);
+        }
+
+        return $this->encode($value, $inline, $dumpObjects);
+    }
+
+    /**
+     * Returns the name of the extension.
+     *
+     * @return string The extension name
+     */
+    public function getName()
+    {
+        return 'yaml';
+    }
+}