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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) 2004, 2005, 2006, 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
*/
/**
* Classes used to hold ASCII strings.
*
* The classes defined here are to be used for Exif entries holding
* ASCII strings, such as {@link PelTag::MAKE}, {@link
* PelTag::SOFTWARE}, and {@link PelTag::DATE_TIME}. For
* entries holding normal textual ASCII strings the class {@link
* PelEntryAscii} should be used, but for entries holding
* timestamps the class {@link PelEntryTime} would be more
* convenient instead. Copyright information is handled by the {@link
* PelEntryCopyright} class.
*
* @author Martin Geisler <mgeisler@users.sourceforge.net>
* @license http://www.gnu.org/licenses/gpl.html GNU General Public
* License (GPL)
* @package PEL
*/
/**
* Class for holding a plain ASCII string.
*
* This class can hold a single ASCII string, and it will be used as in
* <code>
* $entry = $ifd->getEntry(PelTag::IMAGE_DESCRIPTION);
* print($entry->getValue());
* $entry->setValue('This is my image. I like it.');
* </code>
*
* @author Martin Geisler <mgeisler@users.sourceforge.net>
* @package PEL
*/
namespace lsolesen\pel;
class PelEntryAscii extends PelEntry
{
/**
* The string hold by this entry.
*
* This is the string that was given to the {@link __construct
* constructor} or later to {@link setValue}, without any final NULL
* character.
*
* @var string
*/
private $str;
/**
* Make a new PelEntry that can hold an ASCII string.
*
* @param int $tag
* the tag which this entry represents. This should be
* one of the constants defined in {@link PelTag}, e.g., {@link
* PelTag::IMAGE_DESCRIPTION}, {@link PelTag::MODEL}, or any other
* tag with format {@link PelFormat::ASCII}.
* @param string $str
* the string that this entry will represent. The
* string must obey the same rules as the string argument to {@link
* setValue}, namely that it should be given without any trailing
* NULL character and that it must be plain 7-bit ASCII.
*/
public function __construct($tag, $str = '')
{
$this->tag = $tag;
$this->format = PelFormat::ASCII;
$this->setValue($str);
}
/**
*
* {@inheritdoc}
* @see \lsolesen\pel\PelEntry::setValue()
*/
public function setValue($str)
{
$this->components = strlen($str) + 1;
$this->str = $str;
$this->bytes = $str . chr(0x00);
}
/**
*
* {@inheritdoc}
* @see \lsolesen\pel\PelEntry::getValue()
*/
public function getValue()
{
return $this->str;
}
/**
*
* {@inheritdoc}
* @see \lsolesen\pel\PelEntry::getText()
*/
public function getText($brief = false)
{
return $this->str;
}
}