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function QRBitBuffer() {
this.buffer = [];
this.length = 0;
}
QRBitBuffer.prototype = {
get : function(index) {
var bufIndex = Math.floor(index / 8);
return ( (this.buffer[bufIndex] >>> (7 - index % 8) ) & 1) == 1;
},
put : function(num, length) {
for (var i = 0; i < length; i++) {
this.putBit( ( (num >>> (length - i - 1) ) & 1) == 1);
}
},
getLengthInBits : function() {
return this.length;
},
putBit : function(bit) {
var bufIndex = Math.floor(this.length / 8);
if (this.buffer.length <= bufIndex) {
this.buffer.push(0);
}
if (bit) {
this.buffer[bufIndex] |= (0x80 >>> (this.length % 8) );
}
this.length++;
}
};
module.exports = QRBitBuffer;