chdemko /
php-bitarray
| @@ 524-552 (lines=29) @@ | ||
| 521 | * |
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| 522 | * @since 1.0.0 |
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| 523 | */ |
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| 524 | public static function fromTraversable($traversable) |
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| 525 | { |
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| 526 | $bits = new BitArray(count($traversable)); |
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| 527 | $offset = 0; |
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| 528 | $ord = 0; |
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| 529 | ||
| 530 | foreach ($traversable as $value) |
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| 531 | { |
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| 532 | if ($value) |
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| 533 | { |
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| 534 | $ord |= 1 << $offset % 8; |
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| 535 | } |
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| 536 | ||
| 537 | if ($offset % 8 === 7) |
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| 538 | { |
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| 539 | $bits->data[(int) ($offset / 8)] = chr($ord); |
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| 540 | $ord = 0; |
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| 541 | } |
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| 542 | ||
| 543 | $offset++; |
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| 544 | } |
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| 545 | ||
| 546 | if ($offset % 8 !== 0) |
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| 547 | { |
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| 548 | $bits->data[(int) ($offset / 8)] = chr($ord); |
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| 549 | } |
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| 550 | ||
| 551 | return $bits; |
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| 552 | } |
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| 553 | ||
| 554 | /** |
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| 555 | * Create a new BitArray from a bit string |
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| @@ 563-588 (lines=26) @@ | ||
| 560 | * |
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| 561 | * @since 1.0.0 |
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| 562 | */ |
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| 563 | public static function fromString($string) |
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| 564 | { |
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| 565 | $bits = new BitArray(strlen($string)); |
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| 566 | $ord = 0; |
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| 567 | ||
| 568 | for ($offset = 0; $offset < $bits->size; $offset++) |
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| 569 | { |
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| 570 | if ($string[$offset] !== '0') |
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| 571 | { |
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| 572 | $ord |= 1 << $offset % 8; |
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| 573 | } |
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| 574 | ||
| 575 | if ($offset % 8 === 7) |
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| 576 | { |
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| 577 | $bits->data[(int) ($offset / 8)] = chr($ord); |
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| 578 | $ord = 0; |
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| 579 | } |
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| 580 | } |
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| 581 | ||
| 582 | if ($offset % 8 !== 0) |
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| 583 | { |
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| 584 | $bits->data[(int) ($offset / 8)] = chr($ord); |
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| 585 | } |
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| 586 | ||
| 587 | return $bits; |
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| 588 | } |
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| 589 | ||
| 590 | /** |
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| 591 | * Create a new BitArray from json |
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