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<?php |
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namespace iansltx\BusinessDays; |
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/** |
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* Class FilterFactory |
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* |
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* Builds filter functions based on dynamic input |
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* |
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* @package iansltx\BusinessDays |
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*/ |
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class FilterFactory |
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{ |
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/** |
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* Returns a filter that returns true if the day and month match, |
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* false otherwise; the month is represented as an integer (January |
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* is 1, December is 12) |
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* |
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* @param int $month |
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* @param int $day |
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* @return callable |
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* @throws \OutOfBoundsException|\InvalidArgumentException |
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*/ |
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public static function monthAndDay($month, $day) |
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{ |
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static::checkMonthAndDayArgs($month, $day); |
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return function(\DateTimeInterface $dt) use ($month, $day) { |
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return (int) $dt->format('m') === $month && (int) $dt->format('d') === $day; |
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}; |
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} |
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/** |
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* Returns a filter that returns true if the day, month and day of week |
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* match, false otherwise; the month and day of week are represented as |
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* integers (January is 1, December is 12, Sunday is 0, Saturday is 6) |
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* |
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* @param int $month |
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* @param int $day |
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* @param int $day_of_week |
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* @return callable |
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* @throws \OutOfBoundsException|\InvalidArgumentException |
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*/ |
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public static function monthAndDayOnDayOfWeek($month, $day, $day_of_week) |
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{ |
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static::checkMonthAndDayArgs($month, $day); |
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if (!is_int($day_of_week)) { |
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throw new \InvalidArgumentException('$day_of_week must be an integer'); |
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} |
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if ($day_of_week < 0 || $day_of_week > 6) { |
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throw new \OutOfBoundsException('$day_of_week must be 0-6'); |
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} |
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return function(\DateTimeInterface $dt) use ($month, $day, $day_of_week) { |
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return (int) $dt->format('m') === $month && (int) $dt->format('d') === $day && |
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(int) $dt->format('w') === $day_of_week; |
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}; |
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} |
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/** |
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* Returns a filter that returns true if the date is the Nth (e.g. 4rd) |
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* day (e.g. Thursday, as an integer where Sunday is 0 and Saturday is 6) |
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* of a given month (as an integer where January is 1 and December is 12) |
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* |
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* @param int $n |
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* @param int $day_of_week |
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* @param int $month |
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* @return callable |
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* @throws \OutOfBoundsException|\InvalidArgumentException |
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*/ |
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public static function nthDayOfWeekOfMonth($n, $day_of_week, $month) |
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{ |
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static::checkNthDayArgs($n, $day_of_week, $month); |
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$lowerBound = ($n - 1) * 7; |
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$upperBound = $n * 7; |
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return function(\DateTimeInterface $dt) use ($month, $day_of_week, $lowerBound, $upperBound) { |
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if ((int) $dt->format('m') !== $month) { |
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return false; |
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} |
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return ((int) $dt->format('w')) === $day_of_week && |
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$dt->format('d') > $lowerBound && $dt->format('d') <= $upperBound; |
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}; |
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} |
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/** |
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* Does type and bounds checks for nThDayOfWeekOfMonth() |
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* |
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* @param $n |
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* @param $day_of_week |
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* @param $month |
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*/ |
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protected static function checkNthDayArgs($n, $day_of_week, $month) |
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{ |
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if (!is_int($n) || !is_int($day_of_week) || !is_int($month)) { |
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throw new \InvalidArgumentException('$n, $day_of_week and $month must be integers'); |
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} |
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if ($n < 1 || $n > 5) { |
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throw new \OutOfBoundsException('$n must be 1-5'); |
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} |
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if ($day_of_week < 0 || $day_of_week > 6) { |
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throw new \OutOfBoundsException('$day_of_week must be 0-6'); |
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} |
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if ($month < 1 || $month > 12) { |
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throw new \OutOfBoundsException('$month must be 1-12'); |
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} |
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} |
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/** |
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* Does type and bounds checks for monthAndDay() |
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* |
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* @param $month |
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* @param $day |
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*/ |
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protected static function checkMonthAndDayArgs($month, $day) |
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{ |
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if (!is_int($month) || !is_int($day)) { |
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throw new \InvalidArgumentException('$month and $day must be integers'); |
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} |
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if ($month < 1 || $month > 12) { |
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throw new \OutOfBoundsException('$month must be 1-12'); |
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} |
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if ($day < 1 || $day > 31) { |
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throw new \OutOfBoundsException('$day must be a valid day of the month'); |
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} |
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if ((in_array($month, [4, 6, 9, 11]) && $day > 30) || ((int) $month === 2 && $day > 29)) { |
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throw new \OutOfBoundsException('Day ' . $day . ' does not exist in month ' . $month); |
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} |
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} |
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} |
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iansltx /
BusinessDays
