<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category  Zend
 * @package   Zend_Measure
 * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd     New BSD License
 * @version   $Id: Energy.php 16220 2009-06-21 19:49:21Z thomas $
 */

/**
 * Implement needed classes
 */
require_once 'Zend/Measure/Abstract.php';
require_once 'Zend/Locale.php';

/**
 * Class for handling energy conversions
 *
 * @category   Zend
 * @package    Zend_Measure
 * @subpackage Zend_Measure_Energy
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Measure_Energy extends Zend_Measure_Abstract
{
    const STANDARD = 'JOULE';

    const ATTOJOULE                  = 'ATTOJOULE';
    const BOARD_OF_TRADE_UNIT        = 'BOARD_OF_TRADE_UNIT';
    const BTU                        = 'BTU';
    const BTU_THERMOCHEMICAL         = 'BTU_TERMOCHEMICAL';
    const CALORIE                    = 'CALORIE';
    const CALORIE_15C                = 'CALORIE_15C';
    const CALORIE_NUTRITIONAL        = 'CALORIE_NUTRITIONAL';
    const CALORIE_THERMOCHEMICAL     = 'CALORIE_THERMOCHEMICAL';
    const CELSIUS_HEAT_UNIT          = 'CELSIUS_HEAT_UNIT';
    const CENTIJOULE                 = 'CENTIJOULE';
    const CHEVAL_VAPEUR_HEURE        = 'CHEVAL_VAPEUR_HEURE';
    const DECIJOULE                  = 'DECIJOULE';
    const DEKAJOULE                  = 'DEKAJOULE';
    const DEKAWATT_HOUR              = 'DEKAWATT_HOUR';
    const DEKATHERM                  = 'DEKATHERM';
    const ELECTRONVOLT               = 'ELECTRONVOLT';
    const ERG                        = 'ERG';
    const EXAJOULE                   = 'EXAJOULE';
    const EXAWATT_HOUR               = 'EXAWATT_HOUR';
    const FEMTOJOULE                 = 'FEMTOJOULE';
    const FOOT_POUND                 = 'FOOT_POUND';
    const FOOT_POUNDAL               = 'FOOT_POUNDAL';
    const GALLON_UK_AUTOMOTIVE       = 'GALLON_UK_AUTOMOTIVE';
    const GALLON_US_AUTOMOTIVE       = 'GALLON_US_AUTOMOTIVE';
    const GALLON_UK_AVIATION         = 'GALLON_UK_AVIATION';
    const GALLON_US_AVIATION         = 'GALLON_US_AVIATION';
    const GALLON_UK_DIESEL           = 'GALLON_UK_DIESEL';
    const GALLON_US_DIESEL           = 'GALLON_US_DIESEL';
    const GALLON_UK_DISTILATE        = 'GALLON_UK_DISTILATE';
    const GALLON_US_DISTILATE        = 'GALLON_US_DISTILATE';
    const GALLON_UK_KEROSINE_JET     = 'GALLON_UK_KEROSINE_JET';
    const GALLON_US_KEROSINE_JET     = 'GALLON_US_KEROSINE_JET';
    const GALLON_UK_LPG              = 'GALLON_UK_LPG';
    const GALLON_US_LPG              = 'GALLON_US_LPG';
    const GALLON_UK_NAPHTA           = 'GALLON_UK_NAPHTA';
    const GALLON_US_NAPHTA           = 'GALLON_US_NAPHTA';
    const GALLON_UK_KEROSENE         = 'GALLON_UK_KEROSINE';
    const GALLON_US_KEROSENE         = 'GALLON_US_KEROSINE';
    const GALLON_UK_RESIDUAL         = 'GALLON_UK_RESIDUAL';
    const GALLON_US_RESIDUAL         = 'GALLON_US_RESIDUAL';
    const GIGAELECTRONVOLT           = 'GIGAELECTRONVOLT';
    const GIGACALORIE                = 'GIGACALORIE';
    const GIGACALORIE_15C            = 'GIGACALORIE_15C';
    const GIGAJOULE                  = 'GIGAJOULE';
    const GIGAWATT_HOUR              = 'GIGAWATT_HOUR';
    const GRAM_CALORIE               = 'GRAM_CALORIE';
    const HARTREE                    = 'HARTREE';
    const HECTOJOULE                 = 'HECTOJOULE';
    const HECTOWATT_HOUR             = 'HECTOWATT_HOUR';
    const HORSEPOWER_HOUR            = 'HORSEPOWER_HOUR';
    const HUNDRED_CUBIC_FOOT_GAS     = 'HUNDRED_CUBIC_FOOT_GAS';
    const INCH_OUNCE                 = 'INCH_OUNCE';
    const INCH_POUND                 = 'INCH_POUND';
    const JOULE                      = 'JOULE';
    const KILOCALORIE_15C            = 'KILOCALORIE_15C';
    const KILOCALORIE                = 'KILOCALORIE';
    const KILOCALORIE_THERMOCHEMICAL = 'KILOCALORIE_THERMOCHEMICAL';
    const KILOELECTRONVOLT           = 'KILOELECTRONVOLT';
    const KILOGRAM_CALORIE           = 'KILOGRAM_CALORIE';
    const KILOGRAM_FORCE_METER       = 'KILOGRAM_FORCE_METER';
    const KILOJOULE                  = 'KILOJOULE';
    const KILOPOND_METER             = 'KILOPOND_METER';
    const KILOTON                    = 'KILOTON';
    const KILOWATT_HOUR              = 'KILOWATT_HOUR';
    const LITER_ATMOSPHERE           = 'LITER_ATMOSPHERE';
    const MEGAELECTRONVOLT           = 'MEGAELECTRONVOLT';
    const MEGACALORIE                = 'MEGACALORIE';
    const MEGACALORIE_15C            = 'MEGACALORIE_15C';
    const MEGAJOULE                  = 'MEGAJOULE';
    const MEGALERG                   = 'MEGALERG';
    const MEGATON                    = 'MEGATON';
    const MEGAWATTHOUR               = 'MEGAWATTHOUR';
    const METER_KILOGRAM_FORCE       = 'METER_KILOGRAM_FORCE';
    const MICROJOULE                 = 'MICROJOULE';
    const MILLIJOULE                 = 'MILLIJOULE';
    const MYRIAWATT_HOUR             = 'MYRIAWATT_HOUR';
    const NANOJOULE                  = 'NANOJOULE';
    const NEWTON_METER               = 'NEWTON_METER';
    const PETAJOULE                  = 'PETAJOULE';
    const PETAWATTHOUR               = 'PETAWATTHOUR';
    const PFERDESTAERKENSTUNDE       = 'PFERDESTAERKENSTUNDE';
    const PICOJOULE                  = 'PICOJOULE';
    const Q_UNIT                     = 'Q_UNIT';
    const QUAD                       = 'QUAD';
    const TERAELECTRONVOLT           = 'TERAELECTRONVOLT';
    const TERAJOULE                  = 'TERAJOULE';
    const TERAWATTHOUR               = 'TERAWATTHOUR';
    const THERM                      = 'THERM';
    const THERM_US                   = 'THERM_US';
    const THERMIE                    = 'THERMIE';
    const TON                        = 'TON';
    const TONNE_COAL                 = 'TONNE_COAL';
    const TONNE_OIL                  = 'TONNE_OIL';
    const WATTHOUR                   = 'WATTHOUR';
    const WATTSECOND                 = 'WATTSECOND';
    const YOCTOJOULE                 = 'YOCTOJOULE';
    const YOTTAJOULE                 = 'YOTTAJOULE';
    const YOTTAWATTHOUR              = 'YOTTAWATTHOUR';
    const ZEPTOJOULE                 = 'ZEPTOJOULE';
    const ZETTAJOULE                 = 'ZETTAJOULE';
    const ZETTAWATTHOUR              = 'ZETTAWATTHOUR';

    /**
     * Calculations for all energy units
     *
     * @var array
     */
    protected $_units = array(
        'ATTOJOULE'              => array('1.0e-18',           'aJ'),
        'BOARD_OF_TRADE_UNIT'    => array('3600000',           'BOTU'),
        'BTU'                    => array('1055.0559',         'Btu'),
        'BTU_TERMOCHEMICAL'      => array('1054.3503',         'Btu'),
        'CALORIE'                => array('4.1868',            'cal'),
        'CALORIE_15C'            => array('6.1858',            'cal'),
        'CALORIE_NUTRITIONAL'    => array('4186.8',            'cal'),
        'CALORIE_THERMOCHEMICAL' => array('4.184',             'cal'),
        'CELSIUS_HEAT_UNIT'      => array('1899.1005',         'Chu'),
        'CENTIJOULE'             => array('0.01',              'cJ'),
        'CHEVAL_VAPEUR_HEURE'    => array('2647795.5',         'cv heure'),
        'DECIJOULE'              => array('0.1',               'dJ'),
        'DEKAJOULE'              => array('10',                'daJ'),
        'DEKAWATT_HOUR'          => array('36000',             'daWh'),
        'DEKATHERM'              => array('1.055057e+9',       'dathm'),
        'ELECTRONVOLT'           => array('1.6021773e-19',     'eV'),
        'ERG'                    => array('0.0000001',         'erg'),
        'EXAJOULE'               => array('1.0e+18',           'EJ'),
        'EXAWATT_HOUR'           => array('3.6e+21',           'EWh'),
        'FEMTOJOULE'             => array('1.0e-15',           'fJ'),
        'FOOT_POUND'             => array('1.3558179',         'ft lb'),
        'FOOT_POUNDAL'           => array('0.04214011',        'ft poundal'),
        'GALLON_UK_AUTOMOTIVE'   => array('158237172',         'gal car gasoline'),
        'GALLON_US_AUTOMOTIVE'   => array('131760000',         'gal car gasoline'),
        'GALLON_UK_AVIATION'     => array('158237172',         'gal jet gasoline'),
        'GALLON_US_AVIATION'     => array('131760000',         'gal jet gasoline'),
        'GALLON_UK_DIESEL'       => array('175963194',         'gal diesel'),
        'GALLON_US_DIESEL'       => array('146520000',         'gal diesel'),
        'GALLON_UK_DISTILATE'    => array('175963194',         'gal destilate fuel'),
        'GALLON_US_DISTILATE'    => array('146520000',         'gal destilate fuel'),
        'GALLON_UK_KEROSINE_JET' => array('170775090',         'gal jet kerosine'),
        'GALLON_US_KEROSINE_JET' => array('142200000',         'gal jet kerosine'),
        'GALLON_UK_LPG'          => array('121005126.0865275', 'gal lpg'),
        'GALLON_US_LPG'          => array('100757838.45',      'gal lpg'),
        'GALLON_UK_NAPHTA'       => array('160831224',         'gal jet fuel'),
        'GALLON_US_NAPHTA'       => array('133920000',         'gal jet fuel'),
        'GALLON_UK_KEROSINE'     => array('170775090',         'gal kerosine'),
        'GALLON_US_KEROSINE'     => array('142200000',         'gal kerosine'),
        'GALLON_UK_RESIDUAL'     => array('189798138',         'gal residual fuel'),
        'GALLON_US_RESIDUAL'     => array('158040000',         'gal residual fuel'),
        'GIGAELECTRONVOLT'       => array('1.6021773e-10',     'GeV'),
        'GIGACALORIE'            => array('4186800000',        'Gcal'),
        'GIGACALORIE_15C'        => array('4185800000',        'Gcal'),
        'GIGAJOULE'              => array('1.0e+9',            'GJ'),
        'GIGAWATT_HOUR'          => array('3.6e+12',           'GWh'),
        'GRAM_CALORIE'           => array('4.1858',            'g cal'),
        'HARTREE'                => array('4.3597482e-18',     'Eh'),
        'HECTOJOULE'             => array('100',               'hJ'),
        'HECTOWATT_HOUR'         => array('360000',            'hWh'),
        'HORSEPOWER_HOUR'        => array('2684519.5',         'hph'),
        'HUNDRED_CUBIC_FOOT_GAS' => array('108720000',         'hundred ft� gas'),
        'INCH_OUNCE'             => array('0.0070615518',      'in oc'),
        'INCH_POUND'             => array('0.112984825',       'in lb'),
        'JOULE'                  => array('1',                 'J'),
        'KILOCALORIE_15C'        => array('4185.8',            'kcal'),
        'KILOCALORIE'            => array('4186','8',          'kcal'),
        'KILOCALORIE_THERMOCHEMICAL' => array('4184',          'kcal'),
        'KILOELECTRONVOLT'       => array('1.6021773e-16',     'keV'),
        'KILOGRAM_CALORIE'       => array('4185.8',            'kg cal'),
        'KILOGRAM_FORCE_METER'   => array('9.80665',           'kgf m'),
        'KILOJOULE'              => array('1000',              'kJ'),
        'KILOPOND_METER'         => array('9.80665',           'kp m'),
        'KILOTON'                => array('4.184e+12',         'kt'),
        'KILOWATT_HOUR'          => array('3600000',           'kWh'),
        'LITER_ATMOSPHERE'       => array('101.325',           'l atm'),
        'MEGAELECTRONVOLT'       => array('1.6021773e-13',     'MeV'),
        'MEGACALORIE'            => array('4186800',           'Mcal'),
        'MEGACALORIE_15C'        => array('4185800',           'Mcal'),
        'MEGAJOULE'              => array('1000000',           'MJ'),
        'MEGALERG'               => array('0.1',               'megalerg'),
        'MEGATON'                => array('4.184e+15',         'Mt'),
        'MEGAWATTHOUR'           => array('3.6e+9',            'MWh'),
        'METER_KILOGRAM_FORCE'   => array('9.80665',           'm kgf'),
        'MICROJOULE'             => array('0.000001',          '�J'),
        'MILLIJOULE'             => array('0.001',             'mJ'),
        'MYRIAWATT_HOUR'         => array('3.6e+7',            'myWh'),
        'NANOJOULE'              => array('1.0e-9',            'nJ'),
        'NEWTON_METER'           => array('1',                 'Nm'),
        'PETAJOULE'              => array('1.0e+15',           'PJ'),
        'PETAWATTHOUR'           => array('3.6e+18',           'PWh'),
        'PFERDESTAERKENSTUNDE'   => array('2647795.5',         'ps h'),
        'PICOJOULE'              => array('1.0e-12',           'pJ'),
        'Q_UNIT'                 => array('1.0550559e+21',     'Q unit'),
        'QUAD'                   => array('1.0550559e+18',     'quad'),
        'TERAELECTRONVOLT'       => array('1.6021773e-7',      'TeV'),
        'TERAJOULE'              => array('1.0e+12',           'TJ'),
        'TERAWATTHOUR'           => array('3.6e+15',           'TWh'),
        'THERM'                  => array('1.0550559e+8',      'thm'),
        'THERM_US'               => array('1.054804e+8',       'thm'),
        'THERMIE'                => array('4185800',           'th'),
        'TON'                    => array('4.184e+9',          'T explosive'),
        'TONNE_COAL'             => array('2.93076e+10',       'T coal'),
        'TONNE_OIL'              => array('4.1868e+10',        'T oil'),
        'WATTHOUR'               => array('3600',              'Wh'),
        'WATTSECOND'             => array('1',                 'Ws'),
        'YOCTOJOULE'             => array('1.0e-24',           'yJ'),
        'YOTTAJOULE'             => array('1.0e+24',           'YJ'),
        'YOTTAWATTHOUR'          => array('3.6e+27',           'YWh'),
        'ZEPTOJOULE'             => array('1.0e-21',           'zJ'),
        'ZETTAJOULE'             => array('1.0e+21',           'ZJ'),
        'ZETTAWATTHOUR'          => array('3.6e+24',           'ZWh'),
        'STANDARD'               => 'JOULE'
    );
}
