chdemko /
php-bitarray
| @@ 464-492 (lines=29) @@ | ||
| 461 | * |
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| 462 | * @since 1.0.0 |
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| 463 | */ |
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| 464 | public static function fromTraversable($traversable) |
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| 465 | { |
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| 466 | $bits = new BitArray(count($traversable)); |
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| 467 | $offset = 0; |
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| 468 | $ord = 0; |
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| 469 | ||
| 470 | foreach ($traversable as $value) |
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| 471 | { |
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| 472 | if ($value) |
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| 473 | { |
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| 474 | $ord |= 1 << $offset % 8; |
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| 475 | } |
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| 476 | ||
| 477 | if ($offset % 8 === 7) |
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| 478 | { |
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| 479 | $bits->data[(int) ($offset / 8)] = chr($ord); |
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| 480 | $ord = 0; |
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| 481 | } |
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| 482 | ||
| 483 | $offset++; |
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| 484 | } |
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| 485 | ||
| 486 | if ($offset % 8 !== 0) |
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| 487 | { |
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| 488 | $bits->data[(int) ($offset / 8)] = chr($ord); |
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| 489 | } |
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| 490 | ||
| 491 | return $bits; |
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| 492 | } |
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| 493 | ||
| 494 | /** |
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| 495 | * Create a new BitArray from a bit string |
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| @@ 503-528 (lines=26) @@ | ||
| 500 | * |
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| 501 | * @since 1.0.0 |
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| 502 | */ |
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| 503 | public static function fromString($string) |
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| 504 | { |
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| 505 | $bits = new BitArray(strlen($string)); |
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| 506 | $ord = 0; |
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| 507 | ||
| 508 | for ($offset = 0; $offset < $bits->size; $offset++) |
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| 509 | { |
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| 510 | if ($string[$offset] !== '0') |
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| 511 | { |
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| 512 | $ord |= 1 << $offset % 8; |
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| 513 | } |
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| 514 | ||
| 515 | if ($offset % 8 === 7) |
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| 516 | { |
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| 517 | $bits->data[(int) ($offset / 8)] = chr($ord); |
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| 518 | $ord = 0; |
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| 519 | } |
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| 520 | } |
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| 521 | ||
| 522 | if ($offset % 8 !== 0) |
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| 523 | { |
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| 524 | $bits->data[(int) ($offset / 8)] = chr($ord); |
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| 525 | } |
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| 526 | ||
| 527 | return $bits; |
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| 528 | } |
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| 529 | ||
| 530 | /** |
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| 531 | * Create a new BitArray from json |
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