089c866bc2
git-svn-id: http://php-reader.googlecode.com/svn/branches/zend@169 51a70ab9-7547-0410-9469-37e369ee0574
90 lines
2.8 KiB
PHP
90 lines
2.8 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Io
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/**#@+ @ignore */
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require_once 'Zend/Io/Writer.php';
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/**#@-*/
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/**
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* The Zend_Io_StringWriter represents a character stream whose source is
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* a string.
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*
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* @category Zend
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* @package Zend_Io
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* @author Sven Vollbehr <sven@vollbehr.eu>
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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class Zend_Io_StringWriter extends Zend_Io_Writer
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{
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/**
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* Constructs the Zend_Io_StringWriter class with given source string.
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*
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* @param string $data The string to use as the source.
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* @param integer $length If the <var>length</var> argument is given,
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* reading will stop after <var>length</var> bytes have been read or
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* the end of string is reached, whichever comes first.
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* @throws Zend_Io_Exception if an I/O error occurs
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*/
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public function __construct($data = null, $length = null)
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{
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if (($this->_fd = fopen('php://memory', 'w+b')) === false) {
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require_once('Zend/Io/Exception.php');
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throw new Zend_Io_Exception('Unable to open php://memory stream');
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}
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if ($data !== null && is_string($data)) {
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if ($length === null) {
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$length = strlen($data);
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}
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if (($this->_size = fwrite($this->_fd, $data, $length)) === false) {
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require_once('Zend/Io/Exception.php');
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throw new Zend_Io_Exception
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('Unable to write data to php://memory stream');
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}
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fseek($this->_fd, 0);
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}
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}
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/**
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* Returns the string representation of this class.
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*/
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public function toString()
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{
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if ($this->getSize() == 0) {
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return '';
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}
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$offset = $this->getOffset();
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$this->setOffset(0);
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$data = fread($this->getFileDescriptor(), $this->getSize());
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$this->setOffset($offset);
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return $data;
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}
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/**
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* Closes the file descriptor.
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*/
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public function __destruct()
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{
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$this->close();
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}
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}
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