[ \n]\?>(?>\r\n|\n)?)?#', '', $line);
                $manifestLength = $this->resolveManifestLength($manifestContent);
            // line contains start of stub
            } elseif ($stubContent === null) {
                $stubContent = $line;
            // line contains start of manifest
            } elseif ($manifestContent === null && $manifestPosition !== false) {
                $manifestContent = preg_replace('#^.*__HALT_COMPILER\(\);(?>[ \n]\?>(?>\r\n|\n)?)?#', '', $line);
                $manifestLength = $this->resolveManifestLength($manifestContent);
            // manifest has been started (thus is cannot be stub anymore), add content
            } elseif ($manifestContent !== null) {
                $manifestContent .= $line;
                $manifestLength = $this->resolveManifestLength($manifestContent);
            // stub has been started (thus cannot be manifest here, yet), add content
            } elseif ($stubContent !== null) {
                $stubContent .= $line;
            }
        }
        fclose($resource);

        return array(
            'stubContent' => $stubContent,
            'manifestContent' => $manifestContent,
            'manifestLength' => $manifestLength,
        );
    }

    /**
     * Resolves stream in order to handle compressed Phar archives.
     *
     * @return string
     */
    private function resolveStream()
    {
        if ($this->fileType === 'application/x-gzip' || $this->fileType === 'application/gzip') {
            return 'compress.zlib://';
        } elseif ($this->fileType === 'application/x-bzip2') {
            return 'compress.bzip2://';
        }
        return '';
    }

    /**
     * @return string
     */
    private function determineFileType()
    {
        if (class_exists('\\finfo')) {
            $fileInfo = new \finfo();
            return $fileInfo->file($this->fileName, FILEINFO_MIME_TYPE);
        }
        return $this->determineFileTypeByHeader();
    }

    /**
     * In case ext-fileinfo is not present only the relevant types
     * 'application/x-gzip' and 'application/x-bzip2' are resolved.
     *
     * @return string
     */
    private function determineFileTypeByHeader()
    {
        $resource = fopen($this->fileName, 'r');
        if (!is_resource($resource)) {
            throw new ReaderException(
                sprintf('Resource %s could not be opened', $this->fileName),
                1557753055
            );
        }
        $header = fgets($resource, 4);
        fclose($resource);
        $mimeType = '';
        if (strpos($header, "\x42\x5a\x68") === 0) {
            $mimeType = 'application/x-bzip2';
        } elseif (strpos($header, "\x1f\x8b") === 0) {
            $mimeType = 'application/x-gzip';
        }
        return $mimeType;
    }

    /**
     * @param string $content
     * @return int|null
     */
    private function resolveManifestLength($content)
    {
        if (strlen($content) < 4) {
            return null;
        }
        return static::resolveFourByteLittleEndian($content, 0);
    }

    /**
     * @param string $content
     * @param int $start
     * @return int
     */
    public static function resolveFourByteLittleEndian($content, $start)
    {
        $payload = substr($content, $start, 4);
        if (!is_string($payload)) {
            throw new ReaderException(
                sprintf('Cannot resolve value at offset %d', $start),
                1539614260
            );
        }

        $value = unpack('V', $payload);
        if (!isset($value[1])) {
            throw new ReaderException(
                sprintf('Cannot resolve value at offset %d', $start),
                1539614261
            );
        }
        return $value[1];
    }

    /**
     * @param string $content
     * @param int $start
     * @return int
     */
    public static function resolveTwoByteBigEndian($content, $start)
    {
        $payload = substr($content, $start, 2);
        if (!is_string($payload)) {
            throw new ReaderException(
                sprintf('Cannot resolve value at offset %d', $start),
                1539614263
            );
        }

        $value = unpack('n', $payload);
        if (!isset($value[1])) {
            throw new ReaderException(
                sprintf('Cannot resolve value at offset %d', $start),
                1539614264
            );
        }
        return $value[1];
    }
}