<?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) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd     New BSD License
 * @version   $Id: Pressure.php 13209 2008-12-13 22:34:06Z thomas $
 */

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

/**
 * Class for handling pressure conversions
 *
 * @category   Zend
 * @package    Zend_Measure
 * @subpackage Zend_Measure_Pressure
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Measure_Pressure extends Zend_Measure_Abstract
{
    const STANDARD = 'NEWTON_PER_SQUARE_METER';

    const ATMOSPHERE                           = 'ATMOSPHERE';
    const ATMOSPHERE_TECHNICAL                 = 'ATMOSPHERE_TECHNICAL';
    const ATTOBAR                              = 'ATTOBAR';
    const ATTOPASCAL                           = 'ATTOPASCAL';
    const BAR                                  = 'BAR';
    const BARAD                                = 'BARAD';
    const BARYE                                = 'BARYE';
    const CENTIBAR                             = 'CENTIBAR';
    const CENTIHG                              = 'CENTIHG';
    const CENTIMETER_MERCURY_0C                = 'CENTIMETER_MERCURY_0C';
    const CENTIMETER_WATER_4C                  = 'CENTIMETER_WATER_4C';
    const CENTIPASCAL                          = 'CENTIPASCAL';
    const CENTITORR                            = 'CENTITORR';
    const DECIBAR                              = 'DECIBAR';
    const DECIPASCAL                           = 'DECIPASCAL';
    const DECITORR                             = 'DECITORR';
    const DEKABAR                              = 'DEKABAR';
    const DEKAPASCAL                           = 'DEKAPASCAL';
    const DYNE_PER_SQUARE_CENTIMETER           = 'DYNE_PER_SQUARE_CENTIMETER';
    const EXABAR                               = 'EXABAR';
    const EXAPASCAL                            = 'EXAPASCAL';
    const FEMTOBAR                             = 'FEMTOBAR';
    const FEMTOPASCAL                          = 'FEMTOPASCAL';
    const FOOT_AIR_0C                          = 'FOOT_AIR_0C';
    const FOOT_AIR_15C                         = 'FOOT_AIR_15C';
    const FOOT_HEAD                            = 'FOOT_HEAD';
    const FOOT_MERCURY_0C                      = 'FOOT_MERCURY_0C';
    const FOOT_WATER_4C                        = 'FOOT_WATER_4C';
    const GIGABAR                              = 'GIGABAR';
    const GIGAPASCAL                           = 'GIGAPASCAL';
    const GRAM_FORCE_SQUARE_CENTIMETER         = 'GRAM_FORCE_SQUARE_CENTIMETER';
    const HECTOBAR                             = 'HECTOBAR';
    const HECTOPASCAL                          = 'HECTOPASCAL';
    const INCH_AIR_0C                          = 'INCH_AIR_0C';
    const INCH_AIR_15C                         = 'INCH_AIR_15C';
    const INCH_MERCURY_0C                      = 'INCH_MERCURY_0C';
    const INCH_WATER_4C                        = 'INCH_WATER_4C';
    const KILOBAR                              = 'KILOBAR';
    const KILOGRAM_FORCE_PER_SQUARE_CENTIMETER = 'KILOGRAM_FORCE_PER_SQUARE_CENTIMETER';
    const KILOGRAM_FORCE_PER_SQUARE_METER      = 'KILOGRAM_FORCE_PER_SQUARE_METER';
    const KILOGRAM_FORCE_PER_SQUARE_MILLIMETER = 'KILOGRAM_FORCE_PER_SQUARE_MILLIMETER';
    const KILONEWTON_PER_SQUARE_METER          = 'KILONEWTON_PER_SQUARE_METER';
    const KILOPASCAL                           = 'KILOPASCAL';
    const KILOPOND_PER_SQUARE_CENTIMETER       = 'KILOPOND_PER_SQUARE_CENTIMETER';
    const KILOPOND_PER_SQUARE_METER            = 'KILOPOND_PER_SQUARE_METER';
    const KILOPOND_PER_SQUARE_MILLIMETER       = 'KILOPOND_PER_SQUARE_MILLIMETER';
    const KIP_PER_SQUARE_FOOT                  = 'KIP_PER_SQUARE_FOOT';
    const KIP_PER_SQUARE_INCH                  = 'KIP_PER_SQUARE_INCH';
    const MEGABAR                              = 'MEGABAR';
    const MEGANEWTON_PER_SQUARE_METER          = 'MEGANEWTON_PER_SQUARE_METER';
    const MEGAPASCAL                           = 'MEGAPASCAL';
    const METER_AIR_0C                         = 'METER_AIR_0C';
    const METER_AIR_15C                        = 'METER_AIR_15C';
    const METER_HEAD                           = 'METER_HEAD';
    const MICROBAR                             = 'MICROBAR';
    const MICROMETER_MERCURY_0C                = 'MICROMETER_MERCURY_0C';
    const MICROMETER_WATER_4C                  = 'MICROMETER_WATER_4C';
    const MICRON_MERCURY_0C                    = 'MICRON_MERCURY_0C';
    const MICROPASCAL                          = 'MICROPASCAL';
    const MILLIBAR                             = 'MILLIBAR';
    const MILLIHG                              = 'MILLIHG';
    const MILLIMETER_MERCURY_0C                = 'MILLIMETER_MERCURY_0C';
    const MILLIMETER_WATER_4C                  = 'MILLIMETER_WATER_4C';
    const MILLIPASCAL                          = 'MILLIPASCAL';
    const MILLITORR                            = 'MILLITORR';
    const NANOBAR                              = 'NANOBAR';
    const NANOPASCAL                           = 'NANOPASCAL';
    const NEWTON_PER_SQUARE_METER              = 'NEWTON_PER_SQUARE_METER';
    const NEWTON_PER_SQUARE_MILLIMETER         = 'NEWTON_PER_SQUARE_MILLIMETER';
    const OUNCE_PER_SQUARE_INCH                = 'OUNCE_PER_SQUARE_INCH';
    const PASCAL                               = 'PASCAL';
    const PETABAR                              = 'PETABAR';
    const PETAPASCAL                           = 'PETAPASCAL';
    const PICOBAR                              = 'PICOBAR';
    const PICOPASCAL                           = 'PICOPASCAL';
    const PIEZE                                = 'PIEZE';
    const POUND_PER_SQUARE_FOOT                = 'POUND_PER_SQUARE_FOOT';
    const POUND_PER_SQUARE_INCH                = 'POUND_PER_SQUARE_INCH';
    const POUNDAL_PER_SQUARE_FOOT              = 'POUNDAL_PER_SQUARE_FOOT';
    const STHENE_PER_SQUARE_METER              = 'STHENE_PER_SQUARE_METER';
    const TECHNICAL_ATMOSPHERE                 = 'TECHNICAL_ATMOSPHERE';
    const TERABAR                              = 'TERABAR';
    const TERAPASCAL                           = 'TERAPASCAL';
    const TON_PER_SQUARE_FOOT                  = 'TON_PER_SQUARE_FOOT';
    const TON_PER_SQUARE_FOOT_SHORT            = 'TON_PER_SQUARE_FOOT_SHORT';
    const TON_PER_SQUARE_INCH                  = 'TON_PER_SQUARE_INCH';
    const TON_PER_SQUARE_INCH_SHORT            = 'TON_PER_SQUARE_INCH_SHORT';
    const TON_PER_SQUARE_METER                 = 'TON_PER_SQUARE_METER';
    const TORR                                 = 'TORR';
    const WATER_COLUMN_CENTIMETER              = 'WATER_COLUMN_CENTIMETER';
    const WATER_COLUMN_INCH                    = 'WATER_COLUMN_INCH';
    const WATER_COLUMN_MILLIMETER              = 'WATER_COLUMN_MILLIMETER';
    const YOCTOBAR                             = 'YOCTOBAR';
    const YOCTOPASCAL                          = 'YOCTOPASCAL';
    const YOTTABAR                             = 'YOTTABAR';
    const YOTTAPASCAL                          = 'YOTTAPASCAL';
    const ZEPTOBAR                             = 'ZEPTOBAR';
    const ZEPTOPASCAL                          = 'ZEPTOPASCAL';
    const ZETTABAR                             = 'ZETTABAR';
    const ZETTAPASCAL                          = 'ZETTAPASCAL';

    /**
     * Calculations for all pressure units
     *
     * @var array
     */
    protected $_units = array(
        'ATMOSPHERE'            => array('101325.01', 'atm'),
        'ATMOSPHERE_TECHNICAL'  => array('98066.5',   'atm'),
        'ATTOBAR'               => array('1.0e-13',   'ab'),
        'ATTOPASCAL'            => array('1.0e-18',   'aPa'),
        'BAR'                   => array('100000',    'b'),
        'BARAD'                 => array('0.1',       'barad'),
        'BARYE'                 => array('0.1',       'ba'),
        'CENTIBAR'              => array('1000',      'cb'),
        'CENTIHG'               => array('1333.2239', 'cHg'),
        'CENTIMETER_MERCURY_0C' => array('1333.2239', 'cm mercury (0°C)'),
        'CENTIMETER_WATER_4C'   => array('98.0665',   'cm water (4°C)'),
        'CENTIPASCAL'           => array('0.01',      'cPa'),
        'CENTITORR'             => array('1.3332237', 'cTorr'),
        'DECIBAR'               => array('10000',     'db'),
        'DECIPASCAL'            => array('0.1',       'dPa'),
        'DECITORR'              => array('13.332237', 'dTorr'),
        'DEKABAR'               => array('1000000',   'dab'),
        'DEKAPASCAL'            => array('10',        'daPa'),
        'DYNE_PER_SQUARE_CENTIMETER' => array('0.1',  'dyn/cm²'),
        'EXABAR'                => array('1.0e+23',   'Eb'),
        'EXAPASCAL'             => array('1.0e+18',   'EPa'),
        'FEMTOBAR'              => array('1.0e-10',   'fb'),
        'FEMTOPASCAL'           => array('1.0e-15',   'fPa'),
        'FOOT_AIR_0C'           => array('3.8640888', 'ft air (0°C)'),
        'FOOT_AIR_15C'          => array('3.6622931', 'ft air (15°C)'),
        'FOOT_HEAD'             => array('2989.0669', 'ft head'),
        'FOOT_MERCURY_0C'       => array('40636.664', 'ft mercury (0°C)'),
        'FOOT_WATER_4C'         => array('2989.0669', 'ft water (4°C)'),
        'GIGABAR'               => array('1.0e+14',   'Gb'),
        'GIGAPASCAL'            => array('1.0e+9',    'GPa'),
        'GRAM_FORCE_SQUARE_CENTIMETER' => array('98.0665', 'gf'),
        'HECTOBAR'              => array('1.0e+7',    'hb'),
        'HECTOPASCAL'           => array('100',       'hPa'),
        'INCH_AIR_0C'           => array(array('' => '3.8640888', '/' => '12'), 'in air (0°C)'),
        'INCH_AIR_15C'          => array(array('' => '3.6622931', '/' => '12'), 'in air (15°C)'),
        'INCH_MERCURY_0C'       => array(array('' => '40636.664', '/' => '12'), 'in mercury (0°C)'),
        'INCH_WATER_4C'         => array(array('' => '2989.0669', '/' => '12'), 'in water (4°C)'),
        'KILOBAR'               => array('1.0e+8',    'kb'),
        'KILOGRAM_FORCE_PER_SQUARE_CENTIMETER' => array('98066.5', 'kgf/cm²'),
        'KILOGRAM_FORCE_PER_SQUARE_METER'      => array('9.80665', 'kgf/m²'),
        'KILOGRAM_FORCE_PER_SQUARE_MILLIMETER' => array('9806650', 'kgf/mm²'),
        'KILONEWTON_PER_SQUARE_METER'          => array('1000',    'kN/m²'),
        'KILOPASCAL'            => array('1000',      'kPa'),
        'KILOPOND_PER_SQUARE_CENTIMETER' => array('98066.5', 'kp/cm²'),
        'KILOPOND_PER_SQUARE_METER'      => array('9.80665', 'kp/m²'),
        'KILOPOND_PER_SQUARE_MILLIMETER' => array('9806650', 'kp/mm²'),
        'KIP_PER_SQUARE_FOOT'   => array(array('' => '430.92233', '/' => '0.009'),   'kip/ft²'),
        'KIP_PER_SQUARE_INCH'   => array(array('' => '62052.81552', '/' => '0.009'), 'kip/in²'),
        'MEGABAR'               => array('1.0e+11',    'Mb'),
        'MEGANEWTON_PER_SQUARE_METER' => array('1000000', 'MN/m²'),
        'MEGAPASCAL'            => array('1000000',    'MPa'),
        'METER_AIR_0C'          => array('12.677457',  'm air (0°C)'),
        'METER_AIR_15C'         => array('12.015397',  'm air (15°C)'),
        'METER_HEAD'            => array('9804.139432', 'm head'),
        'MICROBAR'              => array('0.1',        'µb'),
        'MICROMETER_MERCURY_0C' => array('0.13332239', 'µm mercury (0°C)'),
        'MICROMETER_WATER_4C'   => array('0.00980665', 'µm water (4°C)'),
        'MICRON_MERCURY_0C'     => array('0.13332239', 'µ mercury (0°C)'),
        'MICROPASCAL'           => array('0.000001',   'µPa'),
        'MILLIBAR'              => array('100',        'mb'),
        'MILLIHG'               => array('133.32239',  'mHg'),
        'MILLIMETER_MERCURY_0C' => array('133.32239',  'mm mercury (0°C)'),
        'MILLIMETER_WATER_4C'   => array('9.80665',    'mm water (0°C)'),
        'MILLIPASCAL'           => array('0.001',      'mPa'),
        'MILLITORR'             => array('0.13332237', 'mTorr'),
        'NANOBAR'               => array('0.0001',     'nb'),
        'NANOPASCAL'            => array('1.0e-9',     'nPa'),
        'NEWTON_PER_SQUARE_METER'      => array('1',   'N/m²'),
        'NEWTON_PER_SQUARE_MILLIMETER' => array('1000000',   'N/mm²'),
        'OUNCE_PER_SQUARE_INCH'        => array('430.92233', 'oz/in²'),
        'PASCAL'                => array('1',          'Pa'),
        'PETABAR'               => array('1.0e+20',    'Pb'),
        'PETAPASCAL'            => array('1.0e+15',    'PPa'),
        'PICOBAR'               => array('0.0000001',  'pb'),
        'PICOPASCAL'            => array('1.0e-12',    'pPa'),
        'PIEZE'                 => array('1000',       'pz'),
        'POUND_PER_SQUARE_FOOT' => array(array('' => '430.92233', '/' => '9'), 'lb/ft²'),
        'POUND_PER_SQUARE_INCH' => array('6894.75728', 'lb/in²'),
        'POUNDAL_PER_SQUARE_FOOT' => array('1.4881639', 'pdl/ft²'),
        'STHENE_PER_SQUARE_METER' => array('1000',     'sn/m²'),
        'TECHNICAL_ATMOSPHERE'  => array('98066.5',    'at'),
        'TERABAR'               => array('1.0e+17',    'Tb'),
        'TERAPASCAL'            => array('1.0e+12',    'TPa'),
        'TON_PER_SQUARE_FOOT'   => array(array('' => '120658.2524', '/' => '1.125'),      't/ft²'),
        'TON_PER_SQUARE_FOOT_SHORT' => array(array('' => '430.92233', '/' => '0.0045'),   't/ft²'),
        'TON_PER_SQUARE_INCH'   => array(array('' => '17374788.3456', '/' => '1.125'),    't/in²'),
        'TON_PER_SQUARE_INCH_SHORT' => array(array('' => '62052.81552', '/' => '0.0045'), 't/in²'),
        'TON_PER_SQUARE_METER'  => array('9806.65',    't/m²'),
        'TORR'                  => array('133.32237',  'Torr'),
        'WATER_COLUMN_CENTIMETER' => array('98.0665',  'WC (cm)'),
        'WATER_COLUMN_INCH'       => array(array('' => '2989.0669', '/' => '12'), 'WC (in)'),
        'WATER_COLUMN_MILLIMETER' => array('9.80665',  'WC (mm)'),
        'YOCTOBAR'              => array('1.0e-19',    'yb'),
        'YOCTOPASCAL'           => array('1.0e-24',    'yPa'),
        'YOTTABAR'              => array('1.0e+29',    'Yb'),
        'YOTTAPASCAL'           => array('1.0e+24',    'YPa'),
        'ZEPTOBAR'              => array('1.0e-16',    'zb'),
        'ZEPTOPASCAL'           => array('1.0e-21',    'zPa'),
        'ZETTABAR'              => array('1.0e+26',    'Zb'),
        'ZETTAPASCAL'           => array('1.0e+21',    'ZPa'),
        'STANDARD'              => 'NEWTON_PER_SQUARE_METER'
    );
}