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<?php
/**
* PEL: PHP Exif Library. A library with support for reading and
* writing all Exif headers in JPEG and TIFF images using PHP.
*
* Copyright (C) 2005, 2007 Martin Geisler.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in the file COPYING; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/* $Id$ */
/**
* Class for dealing with JPEG comments.
*
* @author Martin Geisler <mgeisler@users.sourceforge.net>
* @version $Revision$
* @date $Date$
* @license http://www.gnu.org/licenses/gpl.html GNU General Public
* License (GPL)
* @package PEL
*/
/**#@+ Required class definitions. */
require_once('PelJpegContent.php');
/**#@-*/
/**
* Class representing JPEG comments.
*
* @author Martin Geisler <mgeisler@users.sourceforge.net>
* @package PEL
*/
class PelJpegComment extends PelJpegContent {
/**
* The comment.
*
* @var string
*/
private $comment = '';
/**
* Construct a new JPEG comment.
*
* The new comment will contain the string given.
*/
function __construct($comment = '') {
$this->comment = $comment;
}
/**
* Load and parse data.
*
* This will load the comment from the data window passed.
*/
function load(PelDataWindow $d) {
$this->comment = $d->getBytes();
}
/**
* Update the value with a new comment.
*
* Any old comment will be overwritten.
*
* @param string the new comment.
*/
function setValue($comment) {
$this->comment = $comment;
}
/**
* Get the comment.
*
* @return string the comment.
*/
function getValue() {
return $this->comment;
}
/**
* Turn this comment into bytes.
*
* @return string bytes representing this comment.
*/
function getBytes() {
return $this->comment;
}
/**
* Return a string representation of this object.
*
* @return string the same as {@link getValue()}.
*/
function __toString() {
return $this->getValue();
}
}
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