<?php

/*
 * This file is part of the Monolog package.
 *
 * (c) Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace FluentSmtpLib\Monolog;

class Utils
{
    /**
     * @internal
     */
    public static function getClass($object)
    {
        $class = \get_class($object);
        return 'c' === $class[0] && 0 === \strpos($class, "class@anonymous\x00") ? \get_parent_class($class) . '@anonymous' : $class;
    }
    /**
     * Makes sure if a relative path is passed in it is turned into an absolute path
     *
     * @param string $streamUrl stream URL or path without protocol
     *
     * @return string
     */
    public static function canonicalizePath($streamUrl)
    {
        $prefix = '';
        if ('file://' === \substr($streamUrl, 0, 7)) {
            $streamUrl = \substr($streamUrl, 7);
            $prefix = 'file://';
        }
        // other type of stream, not supported
        if (\false !== \strpos($streamUrl, '://')) {
            return $streamUrl;
        }
        // already absolute
        if (\substr($streamUrl, 0, 1) === '/' || \substr($streamUrl, 1, 1) === ':' || \substr($streamUrl, 0, 2) === '\\\\') {
            return $prefix . $streamUrl;
        }
        $streamUrl = \getcwd() . '/' . $streamUrl;
        return $prefix . $streamUrl;
    }
    /**
     * Return the JSON representation of a value
     *
     * @param  mixed             $data
     * @param  int               $encodeFlags flags to pass to json encode, defaults to JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE
     * @param  bool              $ignoreErrors whether to ignore encoding errors or to throw on error, when ignored and the encoding fails, "null" is returned which is valid json for null
     * @throws \RuntimeException if encoding fails and errors are not ignored
     * @return string
     */
    public static function jsonEncode($data, $encodeFlags = null, $ignoreErrors = \false)
    {
        if (null === $encodeFlags && \version_compare(\PHP_VERSION, '5.4.0', '>=')) {
            $encodeFlags = \JSON_UNESCAPED_SLASHES | \JSON_UNESCAPED_UNICODE;
        }
        if ($ignoreErrors) {
            $json = @\json_encode($data, $encodeFlags);
            if (\false === $json) {
                return 'null';
            }
            return $json;
        }
        $json = \json_encode($data, $encodeFlags);
        if (\false === $json) {
            $json = self::handleJsonError(\json_last_error(), $data);
        }
        return $json;
    }
    /**
     * Handle a json_encode failure.
     *
     * If the failure is due to invalid string encoding, try to clean the
     * input and encode again. If the second encoding attempt fails, the
     * inital error is not encoding related or the input can't be cleaned then
     * raise a descriptive exception.
     *
     * @param  int               $code return code of json_last_error function
     * @param  mixed             $data data that was meant to be encoded
     * @param  int               $encodeFlags flags to pass to json encode, defaults to JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE
     * @throws \RuntimeException if failure can't be corrected
     * @return string            JSON encoded data after error correction
     */
    public static function handleJsonError($code, $data, $encodeFlags = null)
    {
        if ($code !== \JSON_ERROR_UTF8) {
            self::throwEncodeError($code, $data);
        }
        if (\is_string($data)) {
            self::detectAndCleanUtf8($data);
        } elseif (\is_array($data)) {
            \array_walk_recursive($data, array('Monolog\\Utils', 'detectAndCleanUtf8'));
        } else {
            self::throwEncodeError($code, $data);
        }
        if (null === $encodeFlags && \version_compare(\PHP_VERSION, '5.4.0', '>=')) {
            $encodeFlags = \JSON_UNESCAPED_SLASHES | \JSON_UNESCAPED_UNICODE;
        }
        $json = \json_encode($data, $encodeFlags);
        if ($json === \false) {
            self::throwEncodeError(\json_last_error(), $data);
        }
        return $json;
    }
    /**
     * Throws an exception according to a given code with a customized message
     *
     * @param  int               $code return code of json_last_error function
     * @param  mixed             $data data that was meant to be encoded
     * @throws \RuntimeException
     */
    private static function throwEncodeError($code, $data)
    {
        switch ($code) {
            case \JSON_ERROR_DEPTH:
                $msg = 'Maximum stack depth exceeded';
                break;
            case \JSON_ERROR_STATE_MISMATCH:
                $msg = 'Underflow or the modes mismatch';
                break;
            case \JSON_ERROR_CTRL_CHAR:
                $msg = 'Unexpected control character found';
                break;
            case \JSON_ERROR_UTF8:
                $msg = 'Malformed UTF-8 characters, possibly incorrectly encoded';
                break;
            default:
                $msg = 'Unknown error';
        }
        throw new \RuntimeException('JSON encoding failed: ' . $msg . '. Encoding: ' . \var_export($data, \true));
    }
    /**
     * Detect invalid UTF-8 string characters and convert to valid UTF-8.
     *
     * Valid UTF-8 input will be left unmodified, but strings containing
     * invalid UTF-8 codepoints will be reencoded as UTF-8 with an assumed
     * original encoding of ISO-8859-15. This conversion may result in
     * incorrect output if the actual encoding was not ISO-8859-15, but it
     * will be clean UTF-8 output and will not rely on expensive and fragile
     * detection algorithms.
     *
     * Function converts the input in place in the passed variable so that it
     * can be used as a callback for array_walk_recursive.
     *
     * @param mixed $data Input to check and convert if needed, passed by ref
     * @private
     */
    public static function detectAndCleanUtf8(&$data)
    {
        if (\is_string($data) && !\preg_match('//u', $data)) {
            $data = \preg_replace_callback('/[\\x80-\\xFF]+/', function ($m) {
                return \utf8_encode($m[0]);
            }, $data);
            $data = \str_replace(array('¤', '¦', '¨', '´', '¸', '¼', '½', '¾'), array('€', 'Š', 'š', 'Ž', 'ž', 'Œ', 'œ', 'Ÿ'), $data);
        }
    }
}
