/**
* Return the plural rule ('zero', 'one', 'two', 'few', 'many' or 'other') for a number and a locale
* @param string|int|float $number The number to check the plural rule for for
* @param string $locale = '' The locale to use. If empty we'll use the default locale set in \Punic\Data
* @return string Returns one of the following values: 'zero', 'one', 'two', 'few', 'many', 'other'
* @throws \Punic\Exception\BadArgumentType Throws a \Punic\Exception\BadArgumentType if $number is not a valid number
* @throws \Exception Throws a \Exception if there were problems calculating the plural rule
*/
public static function getRule($number, $locale = '')
{
if (is_int($number)) {
$intPartAbs = strval(abs($number));
$floatPart = '';
} elseif (is_float($number)) {
$s = strval($number);
if (strpos($s, '.') === false) {
$intPart = $s;
$floatPart = '';
} else {
list($intPart, $floatPart) = explode('.', $s);
}
$intPartAbs = strval(abs(intval($intPart)));
} elseif (is_string($number) && strlen($number)) {
if (preg_match('/^[+|\\-]?\\d+\\.?$/', $number)) {
$v = intval($number);
$intPartAbs = strval(abs($v));
$floatPart = '';
} elseif (preg_match('/^(\\d*)\\.(\\d+)$/', $number, $m)) {
list($intPart, $floatPart) = explode('.', $number);
$v = @intval($intPart);
$intPartAbs = strval(abs($v));
} else {
throw new Exception\BadArgumentType($number, 'number');
}
} else {
throw new Exception\BadArgumentType($number, 'number');
}
// 'n' => '%1$s', // absolute value of the source number (integer and decimals).
$v1 = $intPartAbs . (strlen($floatPart) ? ".{$floatPart}" : '');
// 'i' => '%2$s', // integer digits of n
$v2 = $intPartAbs;
// 'v' => '%3$s', // number of visible fraction digits in n, with trailing zeros.
$v3 = strlen($floatPart);
// 'w' => '%4$s', // number of visible fraction digits in n, without trailing zeros.
$v4 = strlen(rtrim($floatPart, '0'));
// 'f' => '%5$s', // visible fractional digits in n, with trailing zeros.
$v5 = strlen($floatPart) ? strval(intval($floatPart)) : '0';
// 't' => '%6$s', // visible fractional digits in n, without trailing zeros.
$v6 = trim($floatPart, '0');
if (!strlen($v6)) {
$v6 = '0';
}
$result = 'other';
$node = \Punic\Data::getLanguageNode(\Punic\Data::getGeneric('plurals'), $locale);
foreach ($node as $rule => $formulaPattern) {
$formula = sprintf($formulaPattern, $v1, $v2, $v3, $v4, $v5, $v6);
$check = str_replace(array('static::inRange(', ' and ', ' or ', ', false, ', ', true, ', ', array('), ' , ', $formula);
if (preg_match('/[a-z]/', $check)) {
throw new \Exception('Bad formula!');
}
// fix for difference in modulo (%) in the definition and the one implemented in PHP for decimal numbers
while (preg_match('/(\\d+\\.\\d+) % (\\d+(\\.\\d+)?)/', $formula, $m)) {
list(, $decimalPart) = explode('.', $m[1], 2);
$decimals = strlen(rtrim($decimalPart, '0'));
if ($decimals > 0) {
$pow = intval(pow(10, $decimals));
$repl = '(' . strval(intval(floatval($m[1]) * $pow)) . ' % ' . strval(intval(floatval($m[2] * $pow))) . ') / ' . $pow;
} else {
$repl = strval(intval($m[1])) . ' % ' . $m[2];
}
$formula = str_replace($m[0], $repl, $formula);
}
$formulaResult = @eval("return ({$formula}) ? 'yes' : 'no';");
if ($formulaResult === 'yes') {
$result = $rule;
break;
} elseif ($formulaResult !== 'no') {
throw new \Exception('There was a problem in the formula ' . $formulaPattern);
}
}
return $result;
}
/**
* Retrieve the first weekday for a specific locale (from 0-Sunday to 6-Saturnday)
* @param string $locale = '' The locale to use. If empty we'll use the default locale set in \Punic\Data
* @return int Returns a number from 0 (Sunday) to 7 (Saturnday)
*/
public static function getFirstWeekday($locale = '')
{
static $cache = array();
$locale = empty($locale) ? \Punic\Data::getDefaultLocale() : $locale;
if (!array_key_exists($locale, $cache)) {
$result = 0;
$data = \Punic\Data::getGeneric('weekData');
$i = \Punic\Data::getTerritoryNode($data['firstDay'], $locale);
if (is_int($i)) {
$result = $i;
}
$cache[$locale] = $result;
}
return $cache[$locale];
}
