class POMO_StringReader {}

Source

class POMO_StringReader extends POMO_Reader {

	public $_str = '';

	/**
	 * PHP5 constructor.
	 */
	public function __construct( $str = '' ) {
		parent::__construct();
		$this->_str = $str;
		$this->_pos = 0;
	}

	/**
	 * PHP4 constructor.
	 *
	 * @deprecated 5.4.0 Use __construct() instead.
	 *
	 * @see POMO_StringReader::__construct()
	 */
	public function POMO_StringReader( $str = '' ) {
		_deprecated_constructor( self::class, '5.4.0', static::class );
		self::__construct( $str );
	}

	/**
	 * @param string $bytes
	 * @return string
	 */
	public function read( $bytes ) {
		$data        = $this->substr( $this->_str, $this->_pos, $bytes );
		$this->_pos += $bytes;
		if ( $this->strlen( $this->_str ) < $this->_pos ) {
			$this->_pos = $this->strlen( $this->_str );
		}
		return $data;
	}

	/**
	 * @param int $pos
	 * @return int
	 */
	public function seekto( $pos ) {
		$this->_pos = $pos;
		if ( $this->strlen( $this->_str ) < $this->_pos ) {
			$this->_pos = $this->strlen( $this->_str );
		}
		return $this->_pos;
	}

	/**
	 * @return int
	 */
	public function length() {
		return $this->strlen( $this->_str );
	}

	/**
	 * @return string
	 */
	public function read_all() {
		return $this->substr( $this->_str, $this->_pos, $this->strlen( $this->_str ) );
	}
}

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