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<?php
/**
* webtrees: online genealogy
* Copyright (C) 2019 webtrees development team
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
declare(strict_types=1);
namespace Fisharebest\Webtrees;
use function implode;
use function preg_match;
use function strtolower;
use function substr;
use function trim;
/**
* Representation of a GEDCOM age.
*
* Ages may be a keyword (stillborn, infant, child) or a number of years,
* months and/or days such as "6y 3m".
*/
class Age
{
// GEDCOM keyword: died just prior, at, or near birth, 0 years
private const KEYWORD_STILLBORN = 'stillborn';
// GEDCOM keyword: age < 1 year
private const KEYWORD_INFANT = 'infant';
// GEDCOM keyword: age < 8 years
private const KEYWORD_CHILD = 'child';
// GEDCOM symbol: aged less than
private const SYMBOL_LESS_THAN = '<';
// GEDCOM symbol: aged more than
private const SYMBOL_MORE_THAN = '>';
// GEDCOM symbol: number of years
private const SYMBOL_YEARS = 'y';
// GEDCOM symbol: number of months
private const SYMBOL_MONTHS = 'm';
// GEDCOM symbol: number of weeks (this is a non-standard extension)
private const SYMBOL_WEEKS = 'w';
// GEDCOM symbol: number of days
private const SYMBOL_DAYS = 'd';
/** @var string */
private $keyword = '';
/** @var string */
private $qualifier = '';
/** @var int */
private $years = 0;
/** @var int */
private $months = 0;
/** @var int */
private $weeks = 0;
/** @var int */
private $days = 0;
/**
* Age constructor.
*
* @param string $age
*/
public function __construct(string $age)
{
$age = strtolower(trim($age));
// Keywords
if ($age === self::KEYWORD_STILLBORN || $age === self::KEYWORD_INFANT || $age === self::KEYWORD_CHILD) {
$this->keyword = $age;
return;
}
// Qualifier
$qualifier = substr($age, 0, 1);
if ($qualifier === self::SYMBOL_LESS_THAN || $qualifier === self::SYMBOL_MORE_THAN) {
$this->qualifier = $qualifier;
}
// Number of years, months, weeks and days.
$this->years = $this->extractNumber($age, self::SYMBOL_YEARS);
$this->months = $this->extractNumber($age, self::SYMBOL_MONTHS);
$this->weeks = $this->extractNumber($age, self::SYMBOL_WEEKS);
$this->days = $this->extractNumber($age, self::SYMBOL_DAYS);
}
/**
* Convert an age to localised text.
*/
public function asText(): string
{
if ($this->keyword === self::KEYWORD_STILLBORN) {
// I18N: An individual’s age at an event. e.g. Died 14 Jan 1900 (stillborn)
return I18N::translate('(stillborn)');
}
if ($this->keyword === self::KEYWORD_INFANT) {
// I18N: An individual’s age at an event. e.g. Died 14 Jan 1900 (in infancy)
return I18N::translate('(in infancy)');
}
if ($this->keyword === self::KEYWORD_CHILD) {
// I18N: An individual’s age at an event. e.g. Died 14 Jan 1900 (in childhood)
return I18N::translate('(in childhood)');
}
$age = [];
// Show a zero age as "0 years", not "0 days"
if ($this->years > 0 || $this->months === 0 && $this->weeks === 0 && $this->days === 0) {
// I18N: Part of an age string. e.g. 5 years, 4 months and 3 days
$age[] = I18N::plural('%s year', '%s years', $this->years, I18N::number($this->years));
}
if ($this->months > 0) {
// I18N: Part of an age string. e.g. 5 years, 4 months and 3 days
$age[] = I18N::plural('%s month', '%s months', $this->months, I18N::number($this->months));
}
if ($this->weeks > 0) {
// I18N: Part of an age string. e.g. 5 years, 4 months and 3 days
$age[] = I18N::plural('%s week', '%s weeks', $this->weeks, I18N::number($this->weeks));
}
if ($this->days > 0) {
// I18N: Part of an age string. e.g. 5 years, 4 months and 3 days
$age[] = I18N::plural('%s day', '%s days', $this->days, I18N::number($this->days));
}
// If an age is just a number of years, only show the number
if ($this->years > 0 && $this->months === 0 && $this->weeks === 0 && $this->days === 0) {
$age = [I18N::number($this->years)];
}
$age_string = implode(I18N::$list_separator, $age);
if ($this->qualifier === self::SYMBOL_LESS_THAN) {
// I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (aged less than 21 years)
return I18N::translate('(aged less than %s)', $age_string);
}
if ($this->qualifier === self::SYMBOL_MORE_THAN) {
// I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (aged more than 21 years)
return I18N::translate('(aged more than %s)', $age_string);
}
// I18N: Description of an individual’s age at an event. For example, Died 14 Jan 1900 (aged 43 years)
return I18N::translate('(aged %s)', $age_string);
}
/**
* Extract a number of days/weeks/months/years from the age string.
*
* @param string $age
* @param string $suffix
*
* @return int
*/
private function extractNumber(string $age, string $suffix): int
{
if (preg_match('/(\d+) *' . $suffix . '/', $age, $match)) {
return (int) $match[1];
}
return 0;
}
}
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