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<?php
namespace Mfonte\Base62x\Compression\Huffman\Binary;
/**
* a mechanism for writing a stream if bits into a string, which can then be easily transmistted or stored.
*/
class BitStreamWriter
{
private $data = '';
private $workingByte = null;
private $cursor = 0;
* initialize be creating our working byte / buffer.
public function __construct()
$this->workingByte = new BitArray(8);
}
* convert a string of zeroes and ones into a binary representation.
public function writeString($bitStr)
for ($i = 0; $i < mb_strlen($bitStr); ++$i) {
$this->writeBit((bool) $bitStr[$i]);
* write a bit. 1 if $bit is true.
public function writeBit($bit)
$this->workingByte[$this->cursor] = $bit;
++$this->cursor;
if ($this->cursor > 7) {
$this->data .= $this->workingByte->getData();
$this->cursor = 0;
* when the data is accessed, make sure to include any data
* byte in $this->workingByte.
public function getData()
$data = $this->data;
if ($this->cursor > 0) {
$data .= $this->workingByte->getData();
return $data;
mauriziofonte /
php-base62x
