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File Content: `PelFormat.php`

<?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 Martin Geisler.
 * Copyright (C) 2017 Johannes Weberhofer.
 *
 * 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
 */

/**
 * Namespace for functions operating on Exif formats.
 *
 * This class defines the constants that are to be used whenever one
 * has to refer to the format of an Exif tag. They will be
 * collectively denoted by the pseudo-type PelFormat throughout the
 * documentation.
 *
 * All the methods defined here are static, and they all operate on a
 * single argument which should be one of the class constants.
 *
 * @author Martin Geisler <mgeisler@users.sourceforge.net>
 * @author Johannes Weberhofer <jweberhofer@weberhofer.at>
 * @license http://www.gnu.org/licenses/gpl.html GNU General Public
 *          License (GPL)
 * @package
 *
 */
namespace lsolesen\pel;

class PelFormat
{

    /**
     * Unsigned byte.
     *
     * Each component will be an unsigned 8-bit integer with a value
     * between 0 and 255.
     *
     * Modelled with the {@link PelEntryByte} class.
     */
    const BYTE = 1;

    /**
     * ASCII string.
     *
     * Each component will be an ASCII character.
     *
     * Modelled with the {@link PelEntryAscii} class.
     */
    const ASCII = 2;

    /**
     * Unsigned short.
     *
     * Each component will be an unsigned 16-bit integer with a value
     * between 0 and 65535.
     *
     * Modelled with the {@link PelEntryShort} class.
     */
    const SHORT = 3;

    /**
     * Unsigned long.
     *
     * Each component will be an unsigned 32-bit integer with a value
     * between 0 and 4294967295.
     *
     * Modelled with the {@link PelEntryLong} class.
     */
    const LONG = 4;

    /**
     * Unsigned rational number.
     *
     * Each component will consist of two unsigned 32-bit integers
     * denoting the enumerator and denominator. Each integer will have
     * a value between 0 and 4294967295.
     *
     * Modelled with the {@link PelEntryRational} class.
     */
    const RATIONAL = 5;

    /**
     * Signed byte.
     *
     * Each component will be a signed 8-bit integer with a value
     * between -128 and 127.
     *
     * Modelled with the {@link PelEntrySByte} class.
     */
    const SBYTE = 6;

    /**
     * Undefined byte.
     *
     * Each component will be a byte with no associated interpretation.
     *
     * Modelled with the {@link PelEntryUndefined} class.
     */
    const UNDEFINED = 7;

    /**
     * Signed short.
     *
     * Each component will be a signed 16-bit integer with a value
     * between -32768 and 32767.
     *
     * Modelled with the {@link PelEntrySShort} class.
     */
    const SSHORT = 8;

    /**
     * Signed long.
     *
     * Each component will be a signed 32-bit integer with a value
     * between -2147483648 and 2147483647.
     *
     * Modelled with the {@link PelEntrySLong} class.
     */
    const SLONG = 9;

    /**
     * Signed rational number.
     *
     * Each component will consist of two signed 32-bit integers
     * denoting the enumerator and denominator. Each integer will have
     * a value between -2147483648 and 2147483647.
     *
     * Modelled with the {@link PelEntrySRational} class.
     */
    const SRATIONAL = 10;

    /**
     * Floating point number.
     *
     * Entries with this format are not currently implemented.
     */
    const FLOAT = 11;

    /**
     * Double precision floating point number.
     *
     * Entries with this format are not currently implemented.
     */
    const DOUBLE = 12;

    /**
     * Values for format's short names
     */
    protected static $formatName = [
        self::ASCII => 'Ascii',
        self::BYTE => 'Byte',
        self::SHORT => 'Short',
        self::LONG => 'Long',
        self::RATIONAL => 'Rational',
        self::SBYTE => 'SByte',
        self::SSHORT => 'SShort',
        self::SLONG => 'SLong',
        self::SRATIONAL => 'SRational',
        self::FLOAT => 'Float',
        self::DOUBLE => 'Double',
        self::UNDEFINED => 'Undefined'
    ];

    protected static $formatLength = [
        self::ASCII => 1,
        self::BYTE => 1,
        self::SHORT => 2,
        self::LONG => 4,
        self::RATIONAL => 8,
        self::SBYTE => 1,
        self::SSHORT => 2,
        self::SLONG => 4,
        self::SRATIONAL => 8,
        self::FLOAT => 4,
        self::DOUBLE => 8,
        self::UNDEFINED => 1
    ];

    /**
     * Returns the name of a format like 'Ascii' for the {@link ASCII} format
     *
     * @param integer $type
     *            as defined in {@link PelFormat}
     * @return string
     */
    public static function getName($type)
    {
        if (array_key_exists($type, self::$formatName)) {
            return self::$formatName[$type];
        }
        throw new PelIllegalFormatException($type);
    }

    /**
     * Return the size of components in a given format in bytes needed to store one component with the
     * given format.
     *
     * @param integer $type
     *            as defined in {@link PelFormat}
     * @return integer
     */
    public static function getSize($type)
    {
        if (array_key_exists($type, self::$formatLength)) {
            return self::$formatLength[$type];
        }
        throw new PelIllegalFormatException($type);
    }
}

Name	Size	Permission
Pel.php	10753 bytes	0644
PelCanonMakerNotes.php	8958 bytes	0644
PelConvert.php	14173 bytes	0644
PelDataWindow.php	19433 bytes	0644
PelDataWindowOffsetException.php	1141 bytes	0644
PelDataWindowWindowException.php	1378 bytes	0644
PelEntry.php	7985 bytes	0644
PelEntryAscii.php	3793 bytes	0644
PelEntryByte.php	3039 bytes	0644
PelEntryCopyright.php	5324 bytes	0644
PelEntryException.php	2475 bytes	0644
PelEntryLong.php	4156 bytes	0644
PelEntryNumber.php	8694 bytes	0644
PelEntryRational.php	6221 bytes	0644
PelEntrySByte.php	3313 bytes	0644
PelEntrySLong.php	3429 bytes	0644
PelEntrySRational.php	5485 bytes	0644
PelEntrySShort.php	36714 bytes	0644
PelEntryShort.php	15184 bytes	0644
PelEntryTime.php	12303 bytes	0644
PelEntryUndefined.php	5621 bytes	0644
PelEntryUserComment.php	4104 bytes	0644
PelEntryVersion.php	5093 bytes	0644
PelEntryWindowsString.php	5663 bytes	0644
PelException.php	2044 bytes	0644
PelExif.php	4439 bytes	0644
PelFormat.php	6131 bytes	0644
PelIfd.php	56077 bytes	0644
PelIfdException.php	1426 bytes	0644
PelIllegalFormatException.php	1534 bytes	0644
PelInvalidArgumentException.php	1387 bytes	0644
PelInvalidDataException.php	1375 bytes	0644
PelJpeg.php	23082 bytes	0644
PelJpegComment.php	2762 bytes	0644
PelJpegContent.php	2262 bytes	0644
PelJpegInvalidMarkerException.php	1898 bytes	0644
PelJpegMarker.php	11789 bytes	0644
PelMakerNotes.php	2417 bytes	0644
PelMakerNotesMalformedException.php	1676 bytes	0644
PelOverflowException.php	2121 bytes	0644
PelTag.php	69462 bytes	0644
PelTiff.php	10078 bytes	0644
PelUnexpectedFormatException.php	2622 bytes	0644
PelWrongComponentCountException.php	2189 bytes	0644

File Content: PelFormat.php

File Content: `PelFormat.php`