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<?php
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/*
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 * This file is part of Mustache.php.
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 *
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 * (c) 2010-2017 Justin Hileman
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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/**
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 * Mustache template Filesystem Source.
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 *
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 * This template Source uses stat() to generate the Source key, so that using
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 * pre-compiled templates doesn't require hitting the disk to read the source.
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 * It is more suitable for production use, and is used by default in the
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 * ProductionFilesystemLoader.
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 */
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class Mustache_Source_FilesystemSource implements Mustache_Source
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{
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    private $fileName;
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    private $statProps;
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    private $stat;
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    /**
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     * Filesystem Source constructor.
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     *
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     * @param string $fileName
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     * @param array  $statProps
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     */
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    public function __construct($fileName, array $statProps)
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    {
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        $this->fileName = $fileName;
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        $this->statProps = $statProps;
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    }
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    /**
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     * Get the Source key (used to generate the compiled class name).
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     *
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     * @throws Mustache_Exception_RuntimeException when a source file cannot be read
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     *
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     * @return string
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     */
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    public function getKey()
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    {
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        $chunks = array(
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            'fileName' => $this->fileName,
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        );
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        if (!empty($this->statProps)) {
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            if (!isset($this->stat)) {
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                $this->stat = @stat($this->fileName);
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            }
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            if ($this->stat === false) {
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                throw new Mustache_Exception_RuntimeException(sprintf('Failed to read source file "%s".', $this->fileName));
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            }
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            foreach ($this->statProps as $prop) {
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                $chunks[$prop] = $this->stat[$prop];
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            }
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        }
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        return json_encode($chunks);
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    }
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    /**
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     * Get the template Source.
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     *
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     * @return string
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     */
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    public function getSource()
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    {
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        return file_get_contents($this->fileName);
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    }
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}