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<?php
/**
* Copyright 2014-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file LICENSE for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @category Horde
* @copyright 2014-2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Stream
*/
/**
* Implementation of Horde_Stream that uses a PHP native string variable
* until a certain size is reached, at which point it converts storage to a
* PHP temporary stream.
*
* NOTE: Do NOT use this class if it's possible that a stream_filter will need
* to be added to the stream by some client code. If the size of the data
* does not exceed max_memory there will be no stream to attach to.
*
* @author Michael Slusarz <slusarz@horde.org>
* @category Horde
* @copyright 2014-2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Stream
* @since 1.6.0
*
* @property-read boolean $use_stream If true, the object is using a PHP temp
* stream internally.
*/
class Horde_Stream_TempString extends Horde_Stream_Temp
{
/**
* String stream object.
*
* @var Horde_Stream_String
*/
protected $_string;
/**
*/
public function __construct(array $opts = array())
{
parent::__construct($opts);
$temp = '';
$this->_string = new Horde_Stream_String(array(
'string' => $temp
));
}
/**
*/
protected function _init()
{
if (!isset($this->_params['max_memory'])) {
$this->_params['max_memory'] = 2097152;
}
if (!$this->_string) {
parent::_init();
}
}
/**
*/
public function __get($name)
{
switch ($name) {
case 'stream':
if ($this->_string) {
return $this->_string->stream;
}
break;
case 'use_stream':
return !(bool)$this->_string;
}
return parent::__get($name);
}
/**
*/
public function __set($name, $value)
{
switch ($name) {
case 'utf8_char':
if ($this->_string) {
$this->_string->utf8_char = $value;
}
break;
}
parent::__set($name, $value);
}
/**
*/
public function __clone()
{
if ($this->_string) {
$this->_string = clone $this->_string;
} else {
parent::__clone();
}
}
/**
*/
public function __toString()
{
return $this->_string
? strval($this->_string)
: parent::__toString();
}
/**
*/
public function add($data, $reset = false)
{
if ($this->_string && is_string($data)) {
if ((strlen($data) + $this->_string->length()) < $this->_params['max_memory']) {
$this->_string->add($data, $reset);
return;
}
parent::_init();
parent::add(strval($this->_string));
$this->seek($this->_string->pos(), false);
unset($this->_string);
}
parent::add($data, $reset);
}
/**
*/
public function length($utf8 = false)
{
return $this->_string
? $this->_string->length($utf8)
: parent::length($utf8);
}
/**
*/
public function getToChar($end, $all = true)
{
return $this->_string
? $this->_string->getToChar($end, $all)
: parent::getToChar($end, $all);
}
/**
*/
public function peek($length = 1)
{
return $this->_string
? $this->_string->peek($length)
: parent::peek($length);
}
/**
*/
public function search($char, $reverse = false, $reset = true)
{
return $this->_string
? $this->_string->search($char, $reverse, $reset)
: parent::search($char, $reverse, $reset);
}
/**
*/
public function getString($start = null, $end = null)
{
return $this->_string
? $this->_string->getString($start, $end)
: parent::getString($start, $end);
}
/**
*/
public function substring($start = 0, $length = null, $char = false)
{
return $this->_string
? $this->_string->substring($start, $length, $char)
: parent::substring($start, $length, $char);
}
/**
*/
public function getChar()
{
return $this->_string
? $this->_string->getChar()
: parent::getChar();
}
/**
*/
public function pos()
{
return $this->_string
? $this->_string->pos()
: parent::pos();
}
/**
*/
public function rewind()
{
return $this->_string
? $this->_string->rewind()
: parent::rewind();
}
/**
*/
public function seek($offset = 0, $curr = true, $char = false)
{
return $this->_string
? $this->_string->seek($offset, $curr, $char)
: parent::seek($offset, $curr, $char);
}
/**
*/
public function end($offset = 0)
{
return $this->_string
? $this->_string->end($offset)
: parent::end($offset);
}
/**
*/
public function eof()
{
return $this->_string
? $this->_string->eof()
: parent::eof();
}
/* Serializable methods. */
/**
*/
public function serialize()
{
if ($this->_string) {
$data = array(
$this->_string,
$this->_params
);
} else {
$data = parent::serialize();
}
return serialize($data);
}
/**
*/
public function unserialize($data)
{
$data = unserialize($data);
if ($data[0] instanceof Horde_Stream_String) {
$this->_string = $data[0];
$this->_params = $data[1];
} else {
parent::unserialize($data);
}
}
}