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<?php
/**
* PHP Reader Library
*
* Copyright (c) 2008 The PHP Reader Project Workgroup. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the project workgroup nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @package php-reader
* @subpackage ID3
* @copyright Copyright (c) 2008 The PHP Reader Project Workgroup
* @license http://code.google.com/p/php-reader/wiki/License New BSD License
* @version $Id: AbstractText.php 107 2008-08-03 19:09:16Z svollbehr $
*/
/**#@+ @ignore */
require_once("ID3/Frame.php");
require_once("ID3/Encoding.php");
/**#@-*/
/**
* A base class for all the text frames.
*
* @package php-reader
* @subpackage ID3
* @author Sven Vollbehr <svollbehr@gmail.com>
* @author Ryan Butterfield <buttza@gmail.com>
* @copyright Copyright (c) 2008 The PHP Reader Project Workgroup
* @license http://code.google.com/p/php-reader/wiki/License New BSD License
* @version $Rev: 107 $
*/
abstract class ID3_Frame_AbstractText extends ID3_Frame
implements ID3_Encoding
{
/**
* The text encoding.
*
* @var integer
*/
protected $_encoding = ID3_Encoding::UTF8;
/**
* The text array.
*
* @var string
*/
protected $_text;
/**
* Constructs the class with given parameters and parses object related data.
*
* @param Reader $reader The reader object.
* @param Array $options The options array.
*/
public function __construct($reader = null, &$options = array())
{
parent::__construct($reader, $options);
if ($reader === null)
return;
$this->_encoding = Transform::fromUInt8($this->_data[0]);
$this->_data = substr($this->_data, 1);
switch ($this->_encoding) {
case self::UTF16:
$this->_text =
$this->explodeString16(Transform::fromString16($this->_data));
break;
case self::UTF16BE:
$this->_text =
$this->explodeString16(Transform::fromString16BE($this->_data));
break;
default:
$this->_text =
$this->explodeString8(Transform::fromString8($this->_data));
}
}
/**
* Returns the text encoding.
*
* @return integer
*/
public function getEncoding() { return $this->_encoding; }
/**
* Sets the text encoding.
*
* @see ID3_Encoding
* @param integer $encoding The text encoding.
*/
public function setEncoding($encoding) { $this->_encoding = $encoding; }
/**
* Returns the first text chunk the frame contains.
*
* @return string
*/
public function getText() { return $this->_text[0]; }
/**
* Returns an array of texts the frame contains.
*
* @return Array
*/
public function getTexts() { return $this->_text; }
/**
* Sets the text using given encoding.
*
* @param mixed $text The test string or an array of strings.
* @param integer $encoding The text encoding.
*/
public function setText($text, $encoding = false)
{
$this->_text = is_array($text) ? $text : array($text);
if ($encoding !== false)
$this->_encoding = $encoding;
}
/**
* Returns the frame raw data.
*
* @return string
*/
public function __toString()
{
$data = Transform::toUInt8($this->_encoding);
switch ($this->_encoding) {
case self::UTF16:
case self::UTF16LE:
$array = $this->_text;
foreach ($array as &$text)
$text = Transform::toString16($text);
$data .= Transform::toString16
(implode("\0\0", $array), $this->_encoding == self::UTF16 ?
Transform::MACHINE_ENDIAN_ORDER : Transform::LITTLE_ENDIAN_ORDER);
break;
case self::UTF16BE:
$data .= Transform::toString16BE(implode("\0\0", $this->_text));
break;
default:
$data .= implode("\0", $this->_text);
}
$this->setData($data);
return parent::__toString();
}
}
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