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1
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<?php |
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2
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3
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declare(strict_types=1); |
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4
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5
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namespace PhpIso\Util; |
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6
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7
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use Carbon\Carbon; |
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8
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9
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class IsoDate |
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{ |
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/* |
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* UTC offset = Offset from Greenwich Mean Time in number of 15 min intervals from -48 (West) to +52 (East) recorded according to 7.1.2 |
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*/ |
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14
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15
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/** |
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16
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* Create from a "7 bytes" date |
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17
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* |
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18
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* @param array<int, int> $buffer |
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*/ |
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17 |
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public static function init7(array &$buffer, int &$offset): ?Carbon |
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{ |
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17 |
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$year = 1900 + (int) $buffer[$offset + 0]; |
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17 |
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$month = (int) $buffer[$offset + 1]; |
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24
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17 |
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$day = (int) $buffer[$offset + 2]; |
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25
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17 |
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$hour = (int) $buffer[$offset + 3]; |
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17 |
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$min = (int) $buffer[$offset + 4]; |
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17 |
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$sec = (int) $buffer[$offset + 5]; |
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17 |
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$utcOffset = $buffer[$offset + 6]; |
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17 |
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$utcOffsetHours = (int) round($utcOffset / 4); |
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31
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17 |
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$offset += 7; |
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32
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33
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17 |
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if ($year === 1900 || $month === 0 || $day === 0) { |
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1 |
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return null; |
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} |
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37
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16 |
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return Carbon::create($year, $month, $day, $hour, $min, $sec, $utcOffsetHours); |
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} |
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/** |
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* Create from a "17 bytes" date |
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* |
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* @param array<int, int> $buffer |
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*/ |
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19 |
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public static function init17(array &$buffer, int &$offset): ?Carbon |
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{ |
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46
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19 |
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$date = Buffer::getString($buffer, 16, $offset); |
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47
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48
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19 |
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$year = (int) substr($date, 0, 4); |
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49
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19 |
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$month = (int) substr($date, 4, 2); |
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19 |
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$day = (int) substr($date, 6, 2); |
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51
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19 |
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$hour = (int) substr($date, 8, 2); |
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52
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19 |
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$min = (int) substr($date, 10, 2); |
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53
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19 |
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$sec = (int) substr($date, 12, 2); |
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54
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19 |
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$ms = (int) substr($date, 14, 2); |
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19 |
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$utcOffset = (int) substr($date, 16, 2); |
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19 |
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$utcOffsetHours = (int) round($utcOffset / 4); |
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58
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19 |
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$offset += 1; |
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59
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60
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19 |
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if ($year === 0 || $month === 0 || $day === 0) { |
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61
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18 |
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return null; |
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} |
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63
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64
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16 |
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$date = Carbon::create($year, $month, $day, $hour, $min, $sec, $utcOffsetHours); |
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65
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66
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16 |
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if ($date !== null) { |
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16 |
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$date->addMilliseconds($ms); |
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} |
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70
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16 |
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return $date; |
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} |
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} |
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indy2kro /
php-iso
