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vendor/symfony/config/Loader/DelegatingLoader.php

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+<?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\Component\Config\Loader;
+
+use Symfony\Component\Config\Exception\FileLoaderLoadException;
+
+/**
+ * DelegatingLoader delegates loading to other loaders using a loader resolver.
+ *
+ * This loader acts as an array of LoaderInterface objects - each having
+ * a chance to load a given resource (handled by the resolver)
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class DelegatingLoader extends Loader
+{
+    public function __construct(LoaderResolverInterface $resolver)
+    {
+        $this->resolver = $resolver;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function load($resource, $type = null)
+    {
+        if (false === $loader = $this->resolver->resolve($resource, $type)) {
+            throw new FileLoaderLoadException($resource, null, null, null, $type);
+        }
+
+        return $loader->load($resource, $type);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function supports($resource, $type = null)
+    {
+        return false !== $this->resolver->resolve($resource, $type);
+    }
+}

vendor/symfony/config/Loader/FileLoader.php

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+<?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\Component\Config\Loader;
+
+use Symfony\Component\Config\Exception\FileLoaderImportCircularReferenceException;
+use Symfony\Component\Config\Exception\FileLoaderLoadException;
+use Symfony\Component\Config\Exception\FileLocatorFileNotFoundException;
+use Symfony\Component\Config\FileLocatorInterface;
+use Symfony\Component\Config\Resource\FileExistenceResource;
+use Symfony\Component\Config\Resource\GlobResource;
+
+/**
+ * FileLoader is the abstract class used by all built-in loaders that are file based.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+abstract class FileLoader extends Loader
+{
+    protected static $loading = array();
+
+    protected $locator;
+
+    private $currentDir;
+
+    public function __construct(FileLocatorInterface $locator)
+    {
+        $this->locator = $locator;
+    }
+
+    /**
+     * Sets the current directory.
+     *
+     * @param string $dir
+     */
+    public function setCurrentDir($dir)
+    {
+        $this->currentDir = $dir;
+    }
+
+    /**
+     * Returns the file locator used by this loader.
+     *
+     * @return FileLocatorInterface
+     */
+    public function getLocator()
+    {
+        return $this->locator;
+    }
+
+    /**
+     * Imports a resource.
+     *
+     * @param mixed       $resource       A Resource
+     * @param string|null $type           The resource type or null if unknown
+     * @param bool        $ignoreErrors   Whether to ignore import errors or not
+     * @param string|null $sourceResource The original resource importing the new resource
+     *
+     * @return mixed
+     *
+     * @throws FileLoaderLoadException
+     * @throws FileLoaderImportCircularReferenceException
+     * @throws FileLocatorFileNotFoundException
+     */
+    public function import($resource, $type = null, $ignoreErrors = false, $sourceResource = null)
+    {
+        if (\is_string($resource) && \strlen($resource) !== $i = strcspn($resource, '*?{[')) {
+            $ret = array();
+            $isSubpath = 0 !== $i && false !== strpos(substr($resource, 0, $i), '/');
+            foreach ($this->glob($resource, false, $_, $ignoreErrors || !$isSubpath) as $path => $info) {
+                if (null !== $res = $this->doImport($path, $type, $ignoreErrors, $sourceResource)) {
+                    $ret[] = $res;
+                }
+                $isSubpath = true;
+            }
+
+            if ($isSubpath) {
+                return isset($ret[1]) ? $ret : (isset($ret[0]) ? $ret[0] : null);
+            }
+        }
+
+        return $this->doImport($resource, $type, $ignoreErrors, $sourceResource);
+    }
+
+    /**
+     * @internal
+     */
+    protected function glob($pattern, $recursive, &$resource = null, $ignoreErrors = false)
+    {
+        if (\strlen($pattern) === $i = strcspn($pattern, '*?{[')) {
+            $prefix = $pattern;
+            $pattern = '';
+        } elseif (0 === $i || false === strpos(substr($pattern, 0, $i), '/')) {
+            $prefix = '.';
+            $pattern = '/'.$pattern;
+        } else {
+            $prefix = \dirname(substr($pattern, 0, 1 + $i));
+            $pattern = substr($pattern, \strlen($prefix));
+        }
+
+        try {
+            $prefix = $this->locator->locate($prefix, $this->currentDir, true);
+        } catch (FileLocatorFileNotFoundException $e) {
+            if (!$ignoreErrors) {
+                throw $e;
+            }
+
+            $resource = array();
+            foreach ($e->getPaths() as $path) {
+                $resource[] = new FileExistenceResource($path);
+            }
+
+            return;
+        }
+        $resource = new GlobResource($prefix, $pattern, $recursive);
+
+        foreach ($resource as $path => $info) {
+            yield $path => $info;
+        }
+    }
+
+    private function doImport($resource, $type = null, $ignoreErrors = false, $sourceResource = null)
+    {
+        try {
+            $loader = $this->resolve($resource, $type);
+
+            if ($loader instanceof self && null !== $this->currentDir) {
+                $resource = $loader->getLocator()->locate($resource, $this->currentDir, false);
+            }
+
+            $resources = \is_array($resource) ? $resource : array($resource);
+            for ($i = 0; $i < $resourcesCount = \count($resources); ++$i) {
+                if (isset(self::$loading[$resources[$i]])) {
+                    if ($i == $resourcesCount - 1) {
+                        throw new FileLoaderImportCircularReferenceException(array_keys(self::$loading));
+                    }
+                } else {
+                    $resource = $resources[$i];
+                    break;
+                }
+            }
+            self::$loading[$resource] = true;
+
+            try {
+                $ret = $loader->load($resource, $type);
+            } finally {
+                unset(self::$loading[$resource]);
+            }
+
+            return $ret;
+        } catch (FileLoaderImportCircularReferenceException $e) {
+            throw $e;
+        } catch (\Exception $e) {
+            if (!$ignoreErrors) {
+                // prevent embedded imports from nesting multiple exceptions
+                if ($e instanceof FileLoaderLoadException) {
+                    throw $e;
+                }
+
+                throw new FileLoaderLoadException($resource, $sourceResource, null, $e, $type);
+            }
+        }
+    }
+}

vendor/symfony/config/Loader/GlobFileLoader.php

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+<?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\Component\Config\Loader;
+
+/**
+ * GlobFileLoader loads files from a glob pattern.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class GlobFileLoader extends FileLoader
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function load($resource, $type = null)
+    {
+        return $this->import($resource);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function supports($resource, $type = null)
+    {
+        return 'glob' === $type;
+    }
+}

vendor/symfony/config/Loader/Loader.php

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+<?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\Component\Config\Loader;
+
+use Symfony\Component\Config\Exception\FileLoaderLoadException;
+
+/**
+ * Loader is the abstract class used by all built-in loaders.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+abstract class Loader implements LoaderInterface
+{
+    protected $resolver;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getResolver()
+    {
+        return $this->resolver;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setResolver(LoaderResolverInterface $resolver)
+    {
+        $this->resolver = $resolver;
+    }
+
+    /**
+     * Imports a resource.
+     *
+     * @param mixed       $resource A resource
+     * @param string|null $type     The resource type or null if unknown
+     *
+     * @return mixed
+     */
+    public function import($resource, $type = null)
+    {
+        return $this->resolve($resource, $type)->load($resource, $type);
+    }
+
+    /**
+     * Finds a loader able to load an imported resource.
+     *
+     * @param mixed       $resource A resource
+     * @param string|null $type     The resource type or null if unknown
+     *
+     * @return $this|LoaderInterface
+     *
+     * @throws FileLoaderLoadException If no loader is found
+     */
+    public function resolve($resource, $type = null)
+    {
+        if ($this->supports($resource, $type)) {
+            return $this;
+        }
+
+        $loader = null === $this->resolver ? false : $this->resolver->resolve($resource, $type);
+
+        if (false === $loader) {
+            throw new FileLoaderLoadException($resource, null, null, null, $type);
+        }
+
+        return $loader;
+    }
+}

vendor/symfony/config/Loader/LoaderInterface.php

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+<?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\Component\Config\Loader;
+
+/**
+ * LoaderInterface is the interface implemented by all loader classes.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface LoaderInterface
+{
+    /**
+     * Loads a resource.
+     *
+     * @param mixed       $resource The resource
+     * @param string|null $type     The resource type or null if unknown
+     *
+     * @throws \Exception If something went wrong
+     */
+    public function load($resource, $type = null);
+
+    /**
+     * Returns whether this class supports the given resource.
+     *
+     * @param mixed       $resource A resource
+     * @param string|null $type     The resource type or null if unknown
+     *
+     * @return bool True if this class supports the given resource, false otherwise
+     */
+    public function supports($resource, $type = null);
+
+    /**
+     * Gets the loader resolver.
+     *
+     * @return LoaderResolverInterface A LoaderResolverInterface instance
+     */
+    public function getResolver();
+
+    /**
+     * Sets the loader resolver.
+     */
+    public function setResolver(LoaderResolverInterface $resolver);
+}

vendor/symfony/config/Loader/LoaderResolver.php

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+<?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\Component\Config\Loader;
+
+/**
+ * LoaderResolver selects a loader for a given resource.
+ *
+ * A resource can be anything (e.g. a full path to a config file or a Closure).
+ * Each loader determines whether it can load a resource and how.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class LoaderResolver implements LoaderResolverInterface
+{
+    /**
+     * @var LoaderInterface[] An array of LoaderInterface objects
+     */
+    private $loaders = array();
+
+    /**
+     * @param LoaderInterface[] $loaders An array of loaders
+     */
+    public function __construct(array $loaders = array())
+    {
+        foreach ($loaders as $loader) {
+            $this->addLoader($loader);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function resolve($resource, $type = null)
+    {
+        foreach ($this->loaders as $loader) {
+            if ($loader->supports($resource, $type)) {
+                return $loader;
+            }
+        }
+
+        return false;
+    }
+
+    public function addLoader(LoaderInterface $loader)
+    {
+        $this->loaders[] = $loader;
+        $loader->setResolver($this);
+    }
+
+    /**
+     * Returns the registered loaders.
+     *
+     * @return LoaderInterface[] An array of LoaderInterface instances
+     */
+    public function getLoaders()
+    {
+        return $this->loaders;
+    }
+}

vendor/symfony/config/Loader/LoaderResolverInterface.php

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+<?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\Component\Config\Loader;
+
+/**
+ * LoaderResolverInterface selects a loader for a given resource.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface LoaderResolverInterface
+{
+    /**
+     * Returns a loader able to load the resource.
+     *
+     * @param mixed       $resource A resource
+     * @param string|null $type     The resource type or null if unknown
+     *
+     * @return LoaderInterface|false The loader or false if none is able to load the resource
+     */
+    public function resolve($resource, $type = null);
+}