<?php
/* $Id$ */
namespace Mammut\IO;

(defined('MAMMUT') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

use Mammut\IO\Char\CharOutputIterator;
use Mammut\IO\Char\iCharOutput;

/**
 * String memory buffer IO class.
 * This class extends the byte buffer with string reading methods and character methods.
 *
 * @since 1.1.0.0
 * @author Stefan Daurer <s.daurer@q-spot.org>
 * @package Mammut\IO
 */
class StringBuffer extends Buffer implements iCharOutput, iLineReader {
	use CharOutputIterator;
	
	const _VERSION_ = '0.5.0.0';
	
	private $charset;

	public function getCharset() {
		return $this->charset;
	}

	/**
	 * Put data into the buffer.
	 *
	 * If no charset is defined (or set to false/null), the method tries to detect it.
	 *
	 * @param mixed $data        	
	 * @see \Mammut\IO\Buffer::setBuffer()
	 */
	public function setBuffer($data) {
		parent::setBuffer($data);
		if(empty($this->charset))
			$this->charset = mb_detect_encoding($data);
	}

	public function setCharset($charset) {
		$this->charset = $charset;
	}

	public function isMultibyte() {
		return strtolower($this->charset) == 'utf-8';
	}

	public function readLine($trim = true) {
		if($this->isEOF())
			return false;
		$result = '';
		while(!$this->isEOF()) {
			$ch = $this->readChar();
			$ord = ord($ch);
			if($trim && ($ord == 10 || $ord == 13))
				break;
			$result .= $ch;
			if(!$trim && ($ord == 10 || $ord == 13))
				break;
		}
		return $result;
	}

}