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Viewing: ClassUtils.php

<?php

/*
 * This file is part of the FOSRestBundle package.
 *
 * (c) FriendsOfSymfony <http://friendsofsymfony.github.com/>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace FOS\RestBundle\Routing\Loader;

/**
 * @internal
 */
class ClassUtils
{
    /**
     * Returns the full class name for the first class in the file.
     *
     * @param string $file A PHP file path
     *
     * @return string|false Full class name if found, false otherwise
     */
    public static function findClassInFile($file)
    {
        $class = false;
        $namespace = false;
        $tokens = token_get_all(file_get_contents($file));
        for ($i = 0, $count = count($tokens); $i < $count; ++$i) {
            $token = $tokens[$i];

            if (!is_array($token)) {
                continue;
            }

            if (true === $class && T_STRING === $token[0]) {
                return $namespace.'\\'.$token[1];
            }

            if (true === $namespace && T_STRING === $token[0]) {
                $namespace = '';
                do {
                    $namespace .= $token[1];
                    $token = $tokens[++$i];
                } while ($i < $count && is_array($token) && in_array($token[0], array(T_NS_SEPARATOR, T_STRING)));
            }

            if (T_CLASS === $token[0]) {
                $class = true;
            }

            if (T_NAMESPACE === $token[0]) {
                $namespace = true;
            }
        }

        return false;
    }
}

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