cakephp2-php8/lib/Cake/Utility/CakeNumber.php
dogmatic69 bcb3eb89dc Before this change 0.00 and '0.00' are treated differently. Floats from the database are returned as the string
version while doing calculations will normally end up as floats.

This causes output differences on pages like order totals or invoices where there is a mix of calculated values
and database values.

	Number::currency(0.00, 'GBP') -> £0.00
	Number::currency('0.00', 'GBP') -> 0p

Both versions will return `£0.00` (or whatever 0 is configured to return).
2013-01-11 17:00:06 +00:00

383 lines
13 KiB
PHP

<?php
/**
* CakeNumber Utility.
*
* Methods to make numbers more readable.
*
* PHP 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package Cake.Utility
* @since CakePHP(tm) v 0.10.0.1076
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
/**
* Number helper library.
*
* Methods to make numbers more readable.
*
* @package Cake.Utility
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/number.html
*/
class CakeNumber {
/**
* Currencies supported by the helper. You can add additional currency formats
* with CakeNumber::addFormat
*
* @var array
*/
protected static $_currencies = array(
'USD' => array(
'wholeSymbol' => '$', 'wholePosition' => 'before', 'fractionSymbol' => 'c', 'fractionPosition' => 'after',
'zero' => 0, 'places' => 2, 'thousands' => ',', 'decimals' => '.', 'negative' => '()', 'escape' => true
),
'GBP' => array(
'wholeSymbol' => '&#163;', 'wholePosition' => 'before', 'fractionSymbol' => 'p', 'fractionPosition' => 'after',
'zero' => 0, 'places' => 2, 'thousands' => ',', 'decimals' => '.', 'negative' => '()','escape' => false
),
'EUR' => array(
'wholeSymbol' => '&#8364;', 'wholePosition' => 'before', 'fractionSymbol' => false, 'fractionPosition' => 'after',
'zero' => 0, 'places' => 2, 'thousands' => '.', 'decimals' => ',', 'negative' => '()', 'escape' => false
)
);
/**
* Default options for currency formats
*
* @var array
*/
protected static $_currencyDefaults = array(
'wholeSymbol' => '', 'wholePosition' => 'before', 'fractionSymbol' => '', 'fractionPosition' => 'after',
'zero' => '0', 'places' => 2, 'thousands' => ',', 'decimals' => '.','negative' => '()', 'escape' => true,
);
/**
* Default currency used by CakeNumber::currency()
*
* @var string
*/
protected static $_defaultCurrency = 'USD';
/**
* If native number_format() should be used. If >= PHP5.4
*
* @var boolean
*/
protected static $_numberFormatSupport = null;
/**
* Formats a number with a level of precision.
*
* @param float $value A floating point number.
* @param integer $precision The precision of the returned number.
* @return float Formatted float.
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/number.html#NumberHelper::precision
*/
public static function precision($value, $precision = 3) {
return sprintf("%01.{$precision}F", $value);
}
/**
* Returns a formatted-for-humans file size.
*
* @param integer $size Size in bytes
* @return string Human readable size
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/number.html#NumberHelper::toReadableSize
*/
public static function toReadableSize($size) {
switch (true) {
case $size < 1024:
return __dn('cake', '%d Byte', '%d Bytes', $size, $size);
case round($size / 1024) < 1024:
return __d('cake', '%d KB', self::precision($size / 1024, 0));
case round($size / 1024 / 1024, 2) < 1024:
return __d('cake', '%.2f MB', self::precision($size / 1024 / 1024, 2));
case round($size / 1024 / 1024 / 1024, 2) < 1024:
return __d('cake', '%.2f GB', self::precision($size / 1024 / 1024 / 1024, 2));
default:
return __d('cake', '%.2f TB', self::precision($size / 1024 / 1024 / 1024 / 1024, 2));
}
}
/**
* Converts filesize from human readable string to bytes
*
* @param string $size Size in human readable string like '5MB', '5M', '500B', '50kb' etc.
* @param mixed $default Value to be returned when invalid size was used, for example 'Unknown type'
* @return mixed Number of bytes as integer on success, `$default` on failure if not false
* @throws CakeException On invalid Unit type.
*/
public static function fromReadableSize($size, $default = false) {
if (ctype_digit($size)) {
return (int)$size;
}
$size = strtoupper($size);
$l = -2;
$i = array_search(substr($size, -2), array('KB', 'MB', 'GB', 'TB', 'PB'));
if ($i === false) {
$l = -1;
$i = array_search(substr($size, -1), array('K', 'M', 'G', 'T', 'P'));
}
if ($i !== false) {
$size = substr($size, 0, $l);
return $size * pow(1024, $i + 1);
}
if (substr($size, -1) == 'B' && ctype_digit(substr($size, 0, -1))) {
$size = substr($size, 0, -1);
return (int)$size;
}
if ($default !== false) {
return $default;
}
throw new CakeException(__d('cake_dev', 'No unit type.'));
}
/**
* Formats a number into a percentage string.
*
* @param float $value A floating point number
* @param integer $precision The precision of the returned number
* @return string Percentage string
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/number.html#NumberHelper::toPercentage
*/
public static function toPercentage($value, $precision = 2) {
return self::precision($value, $precision) . '%';
}
/**
* Formats a number into a currency format.
*
* @param float $value A floating point number
* @param integer $options if int then places, if string then before, if (,.-) then use it
* or array with places and before keys
* @return string formatted number
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/number.html#NumberHelper::format
*/
public static function format($value, $options = false) {
$places = 0;
if (is_int($options)) {
$places = $options;
}
$separators = array(',', '.', '-', ':');
$before = $after = null;
if (is_string($options) && !in_array($options, $separators)) {
$before = $options;
}
$thousands = ',';
if (!is_array($options) && in_array($options, $separators)) {
$thousands = $options;
}
$decimals = '.';
if (!is_array($options) && in_array($options, $separators)) {
$decimals = $options;
}
$escape = true;
if (is_array($options)) {
$options = array_merge(array('before' => '$', 'places' => 2, 'thousands' => ',', 'decimals' => '.'), $options);
extract($options);
}
$value = self::_numberFormat($value, $places, '.', '');
$out = $before . self::_numberFormat($value, $places, $decimals, $thousands) . $after;
if ($escape) {
return h($out);
}
return $out;
}
/**
* Formats a number into a currency format to show deltas (signed differences in value).
*
* ### Options
*
* - `places` - Number of decimal places to use. ie. 2
* - `before` - The string to place before whole numbers. ie. '['
* - `after` - The string to place after decimal numbers. ie. ']'
* - `thousands` - Thousands separator ie. ','
* - `decimals` - Decimal separator symbol ie. '.'
*
* @param float $value A floating point number
* @param array $options
* @return string formatted delta
*/
public static function formatDelta($value, $options = array()) {
$places = isset($options['places']) ? $options['places'] : 0;
$value = self::_numberFormat($value, $places, '.', '');
$sign = $value > 0 ? '+' : '';
$options['before'] = isset($options['before']) ? $options['before'] . $sign : $sign;
return self::format($value, $options);
}
/**
* Alternative number_format() to accommodate multibyte decimals and thousands < PHP 5.4
*
* @param float $value
* @param integer $places
* @param string $decimals
* @param string $thousands
* @return string
*/
protected static function _numberFormat($value, $places = 0, $decimals = '.', $thousands = ',') {
if (!isset(self::$_numberFormatSupport)) {
self::$_numberFormatSupport = version_compare(PHP_VERSION, '5.4.0', '>=');
}
if (self::$_numberFormatSupport) {
return number_format($value, $places, $decimals, $thousands);
}
$value = number_format($value, $places, '.', '');
$after = '';
$foundDecimal = strpos($value, '.');
if ($foundDecimal !== false) {
$after = substr($value, $foundDecimal);
$value = substr($value, 0, $foundDecimal);
}
while (($foundThousand = preg_replace('/(\d+)(\d\d\d)/', '\1 \2', $value)) != $value) {
$value = $foundThousand;
}
$value .= $after;
return strtr($value, array(' ' => $thousands, '.' => $decimals));
}
/**
* Formats a number into a currency format.
*
* ### Options
*
* - `wholeSymbol` - The currency symbol to use for whole numbers,
* greater than 1, or less than -1.
* - `wholePosition` - The position the whole symbol should be placed
* valid options are 'before' & 'after'.
* - `fractionSymbol` - The currency symbol to use for fractional numbers.
* - `fractionPosition` - The position the fraction symbol should be placed
* valid options are 'before' & 'after'.
* - `before` - The currency symbol to place before whole numbers
* ie. '$'. `before` is an alias for `wholeSymbol`.
* - `after` - The currency symbol to place after decimal numbers
* ie. 'c'. Set to boolean false to use no decimal symbol.
* eg. 0.35 => $0.35. `after` is an alias for `fractionSymbol`
* - `zero` - The text to use for zero values, can be a
* string or a number. ie. 0, 'Free!'
* - `places` - Number of decimal places to use. ie. 2
* - `thousands` - Thousands separator ie. ','
* - `decimals` - Decimal separator symbol ie. '.'
* - `negative` - Symbol for negative numbers. If equal to '()',
* the number will be wrapped with ( and )
* - `escape` - Should the output be escaped for html special characters.
* The default value for this option is controlled by the currency settings.
* By default the EUR, and GBP contain HTML encoded symbols. If you require non HTML
* encoded symbols you will need to update the settings with the correct bytes.
*
* @param float $value
* @param string $currency Shortcut to default options. Valid values are
* 'USD', 'EUR', 'GBP', otherwise set at least 'before' and 'after' options.
* @param array $options
* @return string Number formatted as a currency.
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/number.html#NumberHelper::currency
*/
public static function currency($value, $currency = null, $options = array()) {
$default = self::$_currencyDefaults;
if ($currency === null) {
$currency = self::defaultCurrency();
}
if (isset(self::$_currencies[$currency])) {
$default = self::$_currencies[$currency];
} elseif (is_string($currency)) {
$options['before'] = $currency;
}
$options = array_merge($default, $options);
if (isset($options['before']) && $options['before'] !== '') {
$options['wholeSymbol'] = $options['before'];
}
if (isset($options['after']) && !$options['after'] !== '') {
$options['fractionSymbol'] = $options['after'];
}
$result = $options['before'] = $options['after'] = null;
$symbolKey = 'whole';
$value = (float)$value;
if (!$value) {
if ($options['zero'] !== 0 ) {
return $options['zero'];
}
} elseif ($value < 1 && $value > -1) {
if ($options['fractionSymbol'] !== false) {
$multiply = intval('1' . str_pad('', $options['places'], '0'));
$value = $value * $multiply;
$options['places'] = null;
$symbolKey = 'fraction';
}
}
$position = $options[$symbolKey . 'Position'] != 'after' ? 'before' : 'after';
$options[$position] = $options[$symbolKey . 'Symbol'];
$abs = abs($value);
$result = self::format($abs, $options);
if ($value < 0) {
if ($options['negative'] == '()') {
$result = '(' . $result . ')';
} else {
$result = $options['negative'] . $result;
}
}
return $result;
}
/**
* Add a currency format to the Number helper. Makes reusing
* currency formats easier.
*
* {{{ $number->addFormat('NOK', array('before' => 'Kr. ')); }}}
*
* You can now use `NOK` as a shortform when formatting currency amounts.
*
* {{{ $number->currency($value, 'NOK'); }}}
*
* Added formats are merged with the defaults defined in CakeNumber::$_currencyDefaults
* See CakeNumber::currency() for more information on the various options and their function.
*
* @param string $formatName The format name to be used in the future.
* @param array $options The array of options for this format.
* @return void
* @see NumberHelper::currency()
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/number.html#NumberHelper::addFormat
*/
public static function addFormat($formatName, $options) {
self::$_currencies[$formatName] = $options + self::$_currencyDefaults;
}
/**
* Getter/setter for default currency
*
* @param string $currency Default currency string used by currency() if $currency argument is not provided
* @return string Currency
*/
public static function defaultCurrency($currency = null) {
if ($currency) {
self::$_defaultCurrency = $currency;
}
return self::$_defaultCurrency;
}
}