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<?php
/**
* @file
* This file is part of the PdfParser library.
*
* @author Sébastien MALOT <sebastien@malot.fr>
*
* @date 2017-01-03
*
* @license LGPLv3
*
* @url <https://github.com/smalot/pdfparser>
*
* PdfParser is a pdf library written in PHPi, extraction oriented.
* Copyright (C) 2017 - Sébastien MALOT <sebastien@malot.fr>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program.
* If not, see <http://www.pdfparser.org/sites/default/LICENSE.txt>.
*/
namespace Smalot\PdfParser\Element;
use Smalot\PdfParser\Document;
/**
* Class ElementDate
*/
class ElementDate extends ElementString
{
/**
* @var array<int,string>
*/
protected static $formats = [
4 => 'Y',
6 => 'Ym',
8 => 'Ymd',
10 => 'YmdH',
12 => 'YmdHi',
14 => 'YmdHis',
15 => 'YmdHise',
17 => 'YmdHisO',
18 => 'YmdHisO',
19 => 'YmdHisO',
];
/**
* @var string
*/
protected $format = 'c';
/**
* @var \DateTime
*/
protected $value;
public function __construct($value)
{
if (!($value instanceof \DateTime)) {
throw new \Exception('DateTime required.'); // FIXME: Sometimes strings are passed to this function
}
parent::__construct($value);
}
public function setFormat(string $format)
{
$this->format = $format;
}
public function equals($value): bool
{
if ($value instanceof \DateTime) {
$timestamp = $value->getTimeStamp();
} else {
$timestamp = strtotime($value);
}
return $timestamp == $this->value->getTimeStamp();
}
public function __toString(): string
{
return (string) $this->value->format($this->format);
}
/**
* @return bool|ElementDate
*/
public static function parse(string $content, ?Document $document = null, int &$offset = 0)
{
if (preg_match('/^\s*\(D\:(?P<name>.*?)\)/s', $content, $match)) {
$name = $match['name'];
$name = str_replace("'", '', $name);
$date = false;
// Smallest format : Y
// Full format : YmdHisP
if (preg_match('/^\d{4}(\d{2}(\d{2}(\d{2}(\d{2}(\d{2}(Z(\d{2,4})?|[\+-]?\d{2}(\d{2})?)?)?)?)?)?)?$/', $name)) {
if ($pos = strpos($name, 'Z')) {
$name = substr($name, 0, $pos + 1);
} elseif (18 == \strlen($name) && preg_match('/[^\+-]0000$/', $name)) {
$name = substr($name, 0, -4).'+0000';
}
$format = self::$formats[\strlen($name)];
$date = \DateTime::createFromFormat($format, $name, new \DateTimeZone('UTC'));
} else {
// special cases
if (preg_match('/^\d{1,2}-\d{1,2}-\d{4},?\s+\d{2}:\d{2}:\d{2}[\+-]\d{4}$/', $name)) {
$name = str_replace(',', '', $name);
$format = 'n-j-Y H:i:sO';
$date = \DateTime::createFromFormat($format, $name, new \DateTimeZone('UTC'));
}
}
if (!$date) {
return false;
}
$offset += strpos($content, '(D:') + \strlen($match['name']) + 4; // 1 for '(D:' and ')'
return new self($date);
}
return false;
}
}
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