date.php

Bug tracker, and reporter.

     * @return integer|string|Zend_Date  new timestamp or Zend_Date depending on calculation
     */
    private function _assign($calc, $date, $comp = 0, $dst = false)
    {
        switch ($calc) {
            case 'set' :
                if (!empty($comp)) {
                    $this->setUnixTimestamp(call_user_func(Zend_Locale_Math::$sub, $this->getUnixTimestamp(), $comp));
                }
                $this->setUnixTimestamp(call_user_func(Zend_Locale_Math::$add, $this->getUnixTimestamp(), $date));
                $value = $this->getUnixTimestamp();
                break;
            case 'add' :
                $this->setUnixTimestamp(call_user_func(Zend_Locale_Math::$add, $this->getUnixTimestamp(), $date));
                $value = $this->getUnixTimestamp();
                break;
            case 'sub' :
                $this->setUnixTimestamp(call_user_func(Zend_Locale_Math::$sub, $this->getUnixTimestamp(), $date));
                $value = $this->getUnixTimestamp();
                break;
            default :
                // cmp - compare
                return call_user_func(Zend_Locale_Math::$comp, $comp, $date);
                break;
        }

        // dst-correction if 'fix_dst' = true and dst !== false but only for non UTC and non GMT
        if ((self::$_Options['fix_dst'] === true) and ($dst !== false) and ($this->_dst === true)) {
            $hour = $this->get(Zend_Date::HOUR);
            if ($hour != $dst) {
                if (($dst == ($hour + 1)) or ($dst == ($hour - 23))) {
                    $value += 3600;
                } else if (($dst == ($hour - 1)) or ($dst == ($hour + 23))) {
                    $value -= 3600;
                }
                $this->setUnixTimestamp($value);
            }
        }
        return $this->getUnixTimestamp();
    }


    /**
     * Calculates the date or object
     *
     * @param  string                          $calc    Calculation to make, one of: 'add'|'sub'|'cmp'|'copy'|'set'
     * @param  string|integer|array|Zend_Date  $date    Date or datepart to calculate with
     * @param  string                          $part    Part of the date to calculate, if null the timestamp is used
     * @param  string|Zend_Locale              $locale  Locale for parsing input
     * @return integer|string|Zend_Date        new timestamp
     * @throws Zend_Date_Exception
     */
    private function _calculate($calc, $date, $part, $locale)
    {
        if (is_null($date)) {
            require_once 'Zend/Date/Exception.php';
            throw new Zend_Date_Exception('parameter $date must be set, null is not allowed');
        }

        if (Zend_Locale::isLocale($part)) {
            $locale = $part;
            $part = null;
        }

        if ($locale === null) {
            $locale = $this->getLocale();
        }

        if ($locale instanceof Zend_Locale) {
            $locale = $locale->toString();
        }

        // create date parts
        $year   = $this->get(Zend_Date::YEAR);
        $month  = $this->get(Zend_Date::MONTH_SHORT);
        $day    = $this->get(Zend_Date::DAY_SHORT);
        $hour   = $this->get(Zend_Date::HOUR_SHORT);
        $minute = $this->get(Zend_Date::MINUTE_SHORT);
        $second = $this->get(Zend_Date::SECOND_SHORT);
        // if object extract value
        if ($date instanceof Zend_Date) {
            $date = $date->get($part, $locale);
        }

        if (is_array($date)) {
            if (!empty($part)) {
                switch($part) {
                    // Fall through
                    case Zend_Date::DAY:
                    case Zend_Date::DAY_SHORT:
                        if (array_key_exists('day', $date)) {
                            $date = $date['day'];
                        }
                        break;
                    // Fall through
                    case Zend_Date::WEEKDAY_SHORT:
                    case Zend_Date::WEEKDAY:
                    case Zend_Date::WEEKDAY_8601:
                    case Zend_Date::WEEKDAY_DIGIT:
                    case Zend_Date::WEEKDAY_NARROW:
                    case Zend_Date::WEEKDAY_NAME:
                        if (array_key_exists('weekday', $date)) {
                            $date = $date['weekday'];
                            $part = Zend_Date::WEEKDAY_DIGIT;
                        }
                        break;
                    case Zend_Date::DAY_OF_YEAR:
                        if (array_key_exists('day_of_year', $date)) {
                            $date = $date['day_of_year'];
                        }
                        break;
                    // Fall through
                    case Zend_Date::MONTH:
                    case Zend_Date::MONTH_SHORT:
                    case Zend_Date::MONTH_NAME:
                    case Zend_Date::MONTH_NAME_SHORT:
                    case Zend_Date::MONTH_NAME_NARROW:
                        if (array_key_exists('month', $date)) {
                            $date = $date['month'];
                        }
                        break;
                    // Fall through
                    case Zend_Date::YEAR:
                    case Zend_Date::YEAR_SHORT:
                    case Zend_Date::YEAR_8601:
                    case Zend_Date::YEAR_SHORT_8601:
                        if (array_key_exists('year', $date)) {
                            $date = $date['year'];
                        }
                        break;
                    // Fall through
                    case Zend_Date::HOUR:
                    case Zend_Date::HOUR_AM:
                    case Zend_Date::HOUR_SHORT:
                    case Zend_Date::HOUR_SHORT_AM:
                        if (array_key_exists('hour', $date)) {
                            $date = $date['hour'];
                        }
                        break;
                    // Fall through
                    case Zend_Date::MINUTE:
                    case Zend_Date::MINUTE_SHORT:
                        if (array_key_exists('minute', $date)) {
                            $date = $date['minute'];
                        }
                        break;
                    // Fall through
                    case Zend_Date::SECOND:
                    case Zend_Date::SECOND_SHORT:
                        if (array_key_exists('second', $date)) {
                            $date = $date['second'];
                        }
                        break;
                    // Fall through
                    case Zend_Date::TIMEZONE:
                    case Zend_Date::TIMEZONE_NAME:
                        if (array_key_exists('timezone', $date)) {
                            $date = $date['timezone'];
                        }
                        break;
                    case Zend_Date::TIMESTAMP:
                        if (array_key_exists('timestamp', $date)) {
                            $date = $date['timestamp'];
                        }
                        break;
                    case Zend_Date::WEEK:
                        if (array_key_exists('week', $date)) {
                            $date = $date['week'];
                        }
                        break;
                    case Zend_Date::TIMEZONE_SECS:
                        if (array_key_exists('gmtsecs', $date)) {
                            $date = $date['gmtsecs'];
                        }
                        break;
                    default:
                        require_once 'Zend/Date/Exception.php';
                        throw new Zend_Date_Exception("datepart for part ($part) not found in array");
                        break;
                }
            } else {
                $hours = 0;
                if (array_key_exists("hour", $date)) {
                    $hours = $date['hour'];
                }
                $minutes = 0;
                if (array_key_exists('minute', $date)) {
                    $minutes = $date['minute'];
                }
                $seconds = 0;
                if (array_key_exists('second', $date)) {
                    $seconds = $date['second'];
                }
                $months = 0;
                if (array_key_exists('month', $date)) {
                    $months = $date['month'];
                }
                $days = 0;
                if (array_key_exists('day', $date)) {
                    $days = $date['day'];
                }
                $years = 0;
                if (array_key_exists('year', $date)) {
                    $years = $date['year'];
                }
                return $this->_assign($calc, $this->mktime($hours, $minutes, $seconds, $months, $days, $years, true),
                                             $this->mktime($hour,  $minute,  $second,  $month,  $day,  $year,  true), $hour);
            }
        }

        // $date as object, part of foreign date as own date
        switch($part) {

            // day formats
            case Zend_Date::DAY :
                if (is_numeric($date)) {
                    return $this->_assign($calc, $this->mktime(0, 0, 0, 1, 1 + intval($date), 1970, true),
                                                 $this->mktime(0, 0, 0, 1, 1 + intval($day),  1970, true), $hour);
                }
                require_once 'Zend/Date/Exception.php';
                throw new Zend_Date_Exception("invalid date ($date) operand, day expected", $date);
                break;

            case Zend_Date::WEEKDAY_SHORT :
                $daylist = Zend_Locale_Data::getList($locale, 'day');
                $weekday = (int) $this->get(Zend_Date::WEEKDAY_DIGIT, $locale);
                $cnt = 0;

                foreach ($daylist as $key => $value) {
                    if (strtoupper(substr($value, 0, 3)) == strtoupper($date)) {
                         $found = $cnt;
                        break;
                    }
                    ++$cnt;
                }

                // Weekday found
                if ($cnt < 7) {
                    return $this->_assign($calc, $this->mktime(0, 0, 0, 1, 1 + $found,   1970, true),
                                                 $this->mktime(0, 0, 0, 1, 1 + $weekday, 1970, true), $hour);
                }

                // Weekday not found
                require_once 'Zend/Date/Exception.php';
                throw new Zend_Date_Exception("invalid date ($date) operand, weekday expected", $date);
                break;

            case Zend_Date::DAY_SHORT :
                if (is_numeric($date)) {
                    return $this->_assign($calc, $this->mktime(0, 0, 0, 1, 1 + intval($date), 1970, true),
                                                 $this->mktime(0, 0, 0, 1, 1 + intval($day),  1970, true), $hour);
                }
                require_once 'Zend/Date/Exception.php';
                throw new Zend_Date_Exception("invalid date ($date) operand, day expected", $date);
                break;

            case Zend_Date::WEEKDAY :
                $daylist = Zend_Locale_Data::getList($locale, 'day');
                $weekday = (int) $this->get(Zend_Date::WEEKDAY_DIGIT, $locale);
                $cnt = 0;

                foreach ($daylist as $key => $value) {
                    if (strtoupper($value) == strtoupper($date)) {
                        $found = $cnt;
                        break;
                    }
                    ++$cnt;
                }

                // Weekday found
                if ($cnt < 7) {
                    return $this->_assign($calc, $this->mktime(0, 0, 0, 1, 1 + $found,   1970, true),
                                                 $this->mktime(0, 0, 0, 1, 1 + $weekday, 1970, true), $hour);
                }

                // Weekday not found
                require_once 'Zend/Date/Exception.php';
                throw new Zend_Date_Exception("invalid date ($date) operand, weekday expected", $date);
                break;

            case Zend_Date::WEEKDAY_8601 :
                $weekday = (int) $this->get(Zend_Date::WEEKDAY_8601, $locale);
                if ((intval($date) > 0) and (intval($date) < 8)) {
                    return $this->_assign($calc, $this->mktime(0, 0, 0, 1, 1 + intval($date), 1970, true),
                                                 $this->mktime(0, 0, 0, 1, 1 + $weekday,      1970, true), $hour);
                }

                // Weekday not found
                require_once 'Zend/Date/Exception.php';
                throw new Zend_Date_Exception("invalid date ($date) operand, weekday expected", $date);
                break;

            case Zend_Date::DAY_SUFFIX :
                require_once 'Zend/Date/Exception.php';
                throw new Zend_Date_Exception('day suffix not supported', $date);
                break;

            case Zend_Date::WEEKDAY_DIGIT :
                $weekday = (int) $this->get(Zend_Date::WEEKDAY_DIGIT, $locale);
                if (is_numeric($date) and (intval($date) >= 0) and (intval($date) < 7)) {
                    return $this->_assign($calc, $this->mktime(0, 0, 0, 1, 1 + $date,    1970, true),
                                                 $this->mktime(0, 0, 0, 1, 1 + $weekday, 1970, true), $hour);
                }

                // Weekday not found
                require_once 'Zend/Date/Exception.php';
                throw new Zend_Date_Exception("invalid date ($date) operand, weekday expected", $date);
                break;

            case Zend_Date::DAY_OF_YEAR :
                if (is_numeric($date)) {
                    return $this->_assign($calc, $this->mktime(0, 0, 0, 1,      1 + $date, 1970, true),
                                                 $this->mktime(0, 0, 0, $month, 1 + $day,  1970, true), $hour);
                }
                require_once 'Zend/Date/Exception.php';
                throw new Zend_Date_Exception("invalid date ($date) operand, day expected", $date);
                break;

            case Zend_Date::WEEKDAY_NARROW :
                $daylist = Zend_Locale_Data::getList($locale, 'day', array('gregorian', 'format', 'abbreviated'));
                $weekday = (int) $this->get(Zend_Date::WEEKDAY_DIGIT, $locale);
                $cnt = 0;
                foreach ($daylist as $key => $value) {
                    if (strtoupper(substr($value, 0, 1)) == strtoupper($date)) {
                        $found = $cnt;
                        break;
                    }
                    ++$cnt;
                }

                // Weekday found
                if ($cnt < 7) {
                    return $this->_assign($calc, $this->mktime(0, 0, 0, 1, 1 + $found,   1970, true),
                                                 $this->mktime(0, 0, 0, 1, 1 + $weekday, 1970, true), $hour);
                }

                // Weekday not found
                require_once 'Zend/Date/Exception.php';
                throw new Zend_Date_Exception("invalid date ($date) operand, weekday expecte