.
*/
namespace Fisharebest\Webtrees;
use DomainException;
use Fisharebest\ExtCalendar\GregorianCalendar;
use Fisharebest\Webtrees\Date\CalendarDate;
use Fisharebest\Webtrees\Date\FrenchDate;
use Fisharebest\Webtrees\Date\GregorianDate;
use Fisharebest\Webtrees\Date\HijriDate;
use Fisharebest\Webtrees\Date\JalaliDate;
use Fisharebest\Webtrees\Date\JewishDate;
use Fisharebest\Webtrees\Date\JulianDate;
use Fisharebest\Webtrees\Date\RomanDate;
/**
* A representation of GEDCOM dates and date ranges.
*
* Since different calendars start their days at different times, (civil
* midnight, solar midnight, sunset, sunrise, etc.), we convert on the basis of
* midday.
*
* We assume that years start on the first day of the first month. Where
* this is not the case (e.g. England prior to 1752), we need to use modified
* years or the OS/NS notation "4 FEB 1750/51".
*/
class Date
{
/** @var string Optional qualifier, such as BEF, FROM, ABT */
public $qual1 = '';
/** @var CalendarDate The first (or only) date */
private $date1;
/** @var string Optional qualifier, such as TO, AND */
public $qual2 = '';
/** @var CalendarDate|null Optional second date */
private $date2 = null;
/** @var string ptional text, as included with an INTerpreted date */
private $text = '';
/**
* Create a date, from GEDCOM data.
*
* @param string $date A date in GEDCOM format
*/
public function __construct(string $date)
{
// Extract any explanatory text
if (preg_match('/^(.*) ?[(](.*)[)]/', $date, $match)) {
$date = $match[1];
$this->text = $match[2];
}
if (preg_match('/^(FROM|BET) (.+) (AND|TO) (.+)/', $date, $match)) {
$this->qual1 = $match[1];
$this->date1 = $this->parseDate($match[2]);
$this->qual2 = $match[3];
$this->date2 = $this->parseDate($match[4]);
} elseif (preg_match('/^(TO|FROM|BEF|AFT|CAL|EST|INT|ABT) (.+)/', $date, $match)) {
$this->qual1 = $match[1];
$this->date1 = $this->parseDate($match[2]);
} else {
$this->date1 = $this->parseDate($date);
}
}
/**
* When we copy a date object, we need to create copies of
* its child objects.
*/
public function __clone()
{
$this->date1 = clone $this->date1;
if ($this->date2 !== null) {
$this->date2 = clone $this->date2;
}
}
/**
* Convert a calendar date, such as "12 JUN 1943" into calendar date object.
*
* A GEDCOM date range may have two calendar dates.
*
* @param string $date
*
* @throws DomainException
*
* @return CalendarDate
*/
private function parseDate($date): CalendarDate
{
// Valid calendar escape specified? - use it
if (preg_match('/^(@#D(?:GREGORIAN|JULIAN|HEBREW|HIJRI|JALALI|FRENCH R|ROMAN)+@) ?(.*)/', $date, $match)) {
$cal = $match[1];
$date = $match[2];
} else {
$cal = '';
}
// A date with a month: DM, M, MY or DMY
if (preg_match('/^(\d?\d?) ?(JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC|TSH|CSH|KSL|TVT|SHV|ADR|ADS|NSN|IYR|SVN|TMZ|AAV|ELL|VEND|BRUM|FRIM|NIVO|PLUV|VENT|GERM|FLOR|PRAI|MESS|THER|FRUC|COMP|MUHAR|SAFAR|RABI[AT]|JUMA[AT]|RAJAB|SHAAB|RAMAD|SHAWW|DHUAQ|DHUAH|FARVA|ORDIB|KHORD|TIR|MORDA|SHAHR|MEHR|ABAN|AZAR|DEY|BAHMA|ESFAN) ?((?:\d{1,4}(?: B\.C\.)?|\d\d\d\d\/\d\d)?)$/', $date, $match)) {
$d = $match[1];
$m = $match[2];
$y = $match[3];
} elseif (preg_match('/^(\d{1,4}(?: B\.C\.)?|\d\d\d\d\/\d\d)$/', $date, $match)) {
// A date with just a year
$d = '';
$m = '';
$y = $match[1];
} else {
// An invalid date - do the best we can.
$d = '';
$m = '';
$y = '';
// Look for a 3/4 digit year anywhere in the date
if (preg_match('/\b(\d{3,4})\b/', $date, $match)) {
$y = $match[1];
}
// Look for a month anywhere in the date
if (preg_match('/(JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC|TSH|CSH|KSL|TVT|SHV|ADR|ADS|NSN|IYR|SVN|TMZ|AAV|ELL|VEND|BRUM|FRIM|NIVO|PLUV|VENT|GERM|FLOR|PRAI|MESS|THER|FRUC|COMP|MUHAR|SAFAR|RABI[AT]|JUMA[AT]|RAJAB|SHAAB|RAMAD|SHAWW|DHUAQ|DHUAH|FARVA|ORDIB|KHORD|TIR|MORDA|SHAHR|MEHR|ABAN|AZAR|DEY|BAHMA|ESFAN)/', $date, $match)) {
$m = $match[1];
// Look for a day number anywhere in the date
if (preg_match('/\b(\d\d?)\b/', $date, $match)) {
$d = $match[1];
}
}
}
// Unambiguous dates - override calendar escape
if (preg_match('/^(TSH|CSH|KSL|TVT|SHV|ADR|ADS|NSN|IYR|SVN|TMZ|AAV|ELL)$/', $m)) {
$cal = '@#DHEBREW@';
} else {
if (preg_match('/^(VEND|BRUM|FRIM|NIVO|PLUV|VENT|GERM|FLOR|PRAI|MESS|THER|FRUC|COMP)$/', $m)) {
$cal = '@#DFRENCH R@';
} else {
if (preg_match('/^(MUHAR|SAFAR|RABI[AT]|JUMA[AT]|RAJAB|SHAAB|RAMAD|SHAWW|DHUAQ|DHUAH)$/', $m)) {
$cal = '@#DHIJRI@'; // This is a WT extension
} else {
if (preg_match('/^(FARVA|ORDIB|KHORD|TIR|MORDA|SHAHR|MEHR|ABAN|AZAR|DEY|BAHMA|ESFAN)$/', $m)) {
$cal = '@#DJALALI@'; // This is a WT extension
} elseif (preg_match('/^\d{1,4}( B\.C\.)|\d\d\d\d\/\d\d$/', $y)) {
$cal = '@#DJULIAN@';
}
}
}
}
// Ambiguous dates - don't override calendar escape
if ($cal == '') {
if (preg_match('/^(JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC)$/', $m)) {
$cal = '@#DGREGORIAN@';
} else {
if (preg_match('/^[345]\d\d\d$/', $y)) {
// Year 3000-5999
$cal = '@#DHEBREW@';
} else {
$cal = '@#DGREGORIAN@';
}
}
}
// Now construct an object of the correct type
switch ($cal) {
case '@#DGREGORIAN@':
return new GregorianDate([
$y,
$m,
$d,
]);
case '@#DJULIAN@':
return new JulianDate([
$y,
$m,
$d,
]);
case '@#DHEBREW@':
return new JewishDate([
$y,
$m,
$d,
]);
case '@#DHIJRI@':
return new HijriDate([
$y,
$m,
$d,
]);
case '@#DFRENCH R@':
return new FrenchDate([
$y,
$m,
$d,
]);
case '@#DJALALI@':
return new JalaliDate([
$y,
$m,
$d,
]);
case '@#DROMAN@':
return new RomanDate([
$y,
$m,
$d,
]);
default:
throw new DomainException('Invalid calendar');
}
}
/**
* A list of supported calendars and their names.
*
* @return string[]
*/
public static function calendarNames(): array
{
return [
/* I18N: The gregorian calendar */
'gregorian' => I18N::translate('Gregorian'),
/* I18N: The julian calendar */
'julian' => I18N::translate('Julian'),
/* I18N: The French calendar */
'french' => I18N::translate('French'),
/* I18N: The Hebrew/Jewish calendar */
'jewish' => I18N::translate('Jewish'),
/* I18N: The Arabic/Hijri calendar */
'hijri' => I18N::translate('Hijri'),
/* I18N: The Persian/Jalali calendar */
'jalali' => I18N::translate('Jalali'),
];
}
/**
* Convert a date to the preferred format and calendar(s) display.
*
* @param bool|null $url Wrap the date in a link to calendar.php
* @param string|null $date_format Override the default date format
* @param bool|null $convert_calendars Convert the date into other calendars
*
* @return string
*/
public function display($url = false, $date_format = null, $convert_calendars = true)
{
// @TODO, This is set in index.php - but it is not safe to rely on globals.
// We need a new DateFormatterService class
global $tree;
$CALENDAR_FORMAT = $tree->getPreference('CALENDAR_FORMAT');
if ($date_format === null) {
$date_format = I18N::dateFormat();
}
if ($convert_calendars) {
$calendar_format = explode('_and_', $CALENDAR_FORMAT);
} else {
$calendar_format = [];
}
// Two dates with text before, between and after
$q1 = $this->qual1;
$d1 = $this->date1->format($date_format, $this->qual1);
$q2 = $this->qual2;
if ($this->date2 === null) {
$d2 = '';
} else {
$d2 = $this->date2->format($date_format, $this->qual2);
}
// Con vert to other calendars, if requested
$conv1 = '';
$conv2 = '';
foreach ($calendar_format as $cal_fmt) {
if ($cal_fmt != 'none') {
$d1conv = $this->date1->convertToCalendar($cal_fmt);
if ($d1conv->inValidRange()) {
$d1tmp = $d1conv->format($date_format, $this->qual1);
} else {
$d1tmp = '';
}
if ($this->date2 === null) {
$d2conv = null;
$d2tmp = '';
} else {
$d2conv = $this->date2->convertToCalendar($cal_fmt);
if ($d2conv->inValidRange()) {
$d2tmp = $d2conv->format($date_format, $this->qual2);
} else {
$d2tmp = '';
}
}
// If the date is different from the unconverted date, add it to the date string.
if ($d1 != $d1tmp && $d1tmp !== '') {
if ($url) {
if ($CALENDAR_FORMAT !== 'none') {
$conv1 .= ' (' . $d1tmp . ')';
} else {
$conv1 .= '
' . $d1tmp . '';
}
} else {
$conv1 .= ' (' . $d1tmp . ')';
}
}
if ($this->date2 !== null && $d2 != $d2tmp && $d1tmp != '') {
if ($url) {
$conv2 .= ' (' . $d2tmp . ')';
} else {
$conv2 .= ' (' . $d2tmp . ')';
}
}
}
}
// Add URLs, if requested
if ($url) {
$d1 = '' . $d1 . '';
if ($this->date2 !== null) {
$d2 = '' . $d2 . '';
}
}
// Localise the date
switch ($q1 . $q2) {
case '':
$tmp = $d1 . $conv1;
break;
case 'ABT':
/* I18N: Gedcom ABT dates */
$tmp = I18N::translate('about %s', $d1 . $conv1);
break;
case 'CAL':
/* I18N: Gedcom CAL dates */
$tmp = I18N::translate('calculated %s', $d1 . $conv1);
break;
case 'EST':
/* I18N: Gedcom EST dates */
$tmp = I18N::translate('estimated %s', $d1 . $conv1);
break;
case 'INT':
/* I18N: Gedcom INT dates */
$tmp = I18N::translate('interpreted %s (%s)', $d1 . $conv1, e($this->text));
break;
case 'BEF':
/* I18N: Gedcom BEF dates */
$tmp = I18N::translate('before %s', $d1 . $conv1);
break;
case 'AFT':
/* I18N: Gedcom AFT dates */
$tmp = I18N::translate('after %s', $d1 . $conv1);
break;
case 'FROM':
/* I18N: Gedcom FROM dates */
$tmp = I18N::translate('from %s', $d1 . $conv1);
break;
case 'TO':
/* I18N: Gedcom TO dates */
$tmp = I18N::translate('to %s', $d1 . $conv1);
break;
case 'BETAND':
/* I18N: Gedcom BET-AND dates */
$tmp = I18N::translate('between %s and %s', $d1 . $conv1, $d2 . $conv2);
break;
case 'FROMTO':
/* I18N: Gedcom FROM-TO dates */
$tmp = I18N::translate('from %s to %s', $d1 . $conv1, $d2 . $conv2);
break;
default:
$tmp = I18N::translate('Invalid date');
break;
}
if (strip_tags($tmp) === '') {
return '';
}
return '' . $tmp . '';
}
/**
* Get the earliest calendar date from this GEDCOM date.
*
* In the date “FROM 1900 TO 1910”, this would be 1900.
*
* @return CalendarDate
*/
public function minimumDate(): CalendarDate
{
return $this->date1;
}
/**
* Get the latest calendar date from this GEDCOM date.
*
* In the date “FROM 1900 TO 1910”, this would be 1910.
*
* @return CalendarDate
*/
public function maximumDate()
{
return $this->date2 ?? $this->date1;
}
/**
* Get the earliest Julian day number from this GEDCOM date.
*
* @return int
*/
public function minimumJulianDay(): int
{
return $this->minimumDate()->minimumJulianDay();
}
/**
* Get the latest Julian day number from this GEDCOM date.
*
* @return int
*/
public function maximumJulianDay(): int
{
return $this->maximumDate()->maximumJulianDay();
}
/**
* Get the middle Julian day number from the GEDCOM date.
*
* For a month-only date, this would be somewhere around the 16th day.
* For a year-only date, this would be somewhere around 1st July.
*
* @return int
*/
public function julianDay(): int
{
return (int) (($this->minimumJulianDay() + $this->maximumJulianDay()) / 2);
}
/**
* Offset this date by N years, and round to the whole year.
*
* This is typically used to create an estimated death date,
* which is before a certain number of years after the birth date.
*
* @param int $years a number of years, positive or negative
* @param string $qualifier typically “BEF” or “AFT”
*
* @return Date
*/
public function addYears(int $years, string $qualifier = ''): Date
{
$tmp = clone $this;
$tmp->date1->y += $years;
$tmp->date1->m = 0;
$tmp->date1->d = 0;
$tmp->date1->setJdFromYmd();
$tmp->qual1 = $qualifier;
$tmp->qual2 = '';
$tmp->date2 = null;
return $tmp;
}
/**
* Calculate the the age of a person (n years), on a given date.
*
* @param Date $d1
* @param Date $d2
*
* @return int
*/
public static function getAgeYears(Date $d1, Date $d2): int
{
if ($d2->maximumJulianDay() >= $d1->minimumJulianDay() && $d2->minimumJulianDay() <= $d1->minimumJulianDay()) {
// Overlapping dates
$jd = $d1->minimumJulianDay();
} else {
// Non-overlapping dates
$jd = $d2->minimumJulianDay();
}
if ($jd && $d1->minimumJulianDay() && $d1->minimumJulianDay() <= $jd) {
return $d1->minimumDate()->getAge($jd);
} else {
return -1;
}
}
/**
* Calculate the the age of a person (n days), on a given date.
*
* @param Date $d1
* @param Date $d2
*
* @return int
*/
public static function getAgeDays(Date $d1, Date $d2): int
{
if ($d2->maximumJulianDay() >= $d1->minimumJulianDay() && $d2->minimumJulianDay() <= $d1->minimumJulianDay()) {
// Overlapping dates
$jd = $d1->minimumJulianDay();
} else {
// Non-overlapping dates
$jd = $d2->minimumJulianDay();
}
// Days - integer only (for sorting, rather than for display)
if ($jd && $d1->minimumJulianDay()) {
return $jd - $d1->minimumJulianDay();
} else {
return -1;
}
}
/**
* Calculate the the age of a person, on a date.
*
* @param Date $d1
* @param Date|null $d2
*
* @return string
*/
public static function getAge(Date $d1, Date $d2 = null): string
{
if ($d2 !== null) {
if ($d2->maximumJulianDay() >= $d1->minimumJulianDay() && $d2->minimumJulianDay() <= $d1->minimumJulianDay()) {
// Overlapping dates
$jd = $d1->minimumJulianDay();
} else {
// Non-overlapping dates
$jd = $d2->minimumJulianDay();
}
} else {
// If second date not specified, use today’s date
$jd = WT_CLIENT_JD;
}
// Just years, in local digits, with warning for negative/
if ($jd && $d1->minimumJulianDay()) {
if ($d1->minimumJulianDay() > $jd) {
return '';
} else {
$years = $d1->minimumDate()->getAge($jd);
return I18N::number($years);
}
} else {
return '';
}
}
/**
* Calculate the years/months/days between two events
* Return a gedcom style age string: "1y 2m 3d" (for fact details)
*
* @param Date $d1
* @param Date|null $d2
*
* @return string
*/
public static function getAgeGedcom(Date $d1, Date $d2 = null)
{
if ($d2 === null) {
return $d1->date1->getAgeFull(WT_CLIENT_JD);
}
if (self::compare($d1, $d2) !== 0) {
return $d1->date1->getAgeFull($d2->minimumJulianDay());
}
if ($d1->minimumJulianDay() == $d2->minimumJulianDay()) {
return '0d';
}
return '';
}
/**
* Compare two dates, so they can be sorted.
*
* return <0 if $a<$b
* return >0 if $b>$a
* return 0 if dates same/overlap
* BEF/AFT sort as the day before/after
*
* @param Date $a
* @param Date $b
*
* @return int
*/
public static function compare(Date $a, Date $b)
{
// Get min/max JD for each date.
switch ($a->qual1) {
case 'BEF':
$amin = $a->minimumJulianDay() - 1;
$amax = $amin;
break;
case 'AFT':
$amax = $a->maximumJulianDay() + 1;
$amin = $amax;
break;
default:
$amin = $a->minimumJulianDay();
$amax = $a->maximumJulianDay();
break;
}
switch ($b->qual1) {
case 'BEF':
$bmin = $b->minimumJulianDay() - 1;
$bmax = $bmin;
break;
case 'AFT':
$bmax = $b->maximumJulianDay() + 1;
$bmin = $bmax;
break;
default:
$bmin = $b->minimumJulianDay();
$bmax = $b->maximumJulianDay();
break;
}
if ($amax < $bmin) {
return -1;
}
if ($amin > $bmax && $bmax > 0) {
return 1;
}
if ($amin < $bmin && $amax <= $bmax) {
return -1;
}
if ($amin > $bmin && $amax >= $bmax && $bmax > 0) {
return 1;
}
return 0;
}
/**
* Check whether a gedcom date contains usable calendar date(s).
*
* An incomplete date such as "12 AUG" would be invalid, as
* we cannot sort it.
*
* @return bool
*/
public function isOK(): bool
{
return $this->minimumJulianDay() && $this->maximumJulianDay();
}
/**
* Calculate the gregorian year for a date. This should NOT be used internally
* within WT - we should keep the code "calendar neutral" to allow support for
* jewish/arabic users. This is only for interfacing with external entities,
* such as the ancestry.com search interface or the dated fact icons.
*
* @return int
*/
public function gregorianYear()
{
if ($this->isOK()) {
$gregorian_calendar = new GregorianCalendar();
list($year) = $gregorian_calendar->jdToYmd($this->julianDay());
return $year;
}
return 0;
}
}