// 本文件由FirstUI授权予四川政采招投标咨询有限公司（会员ID：1 63，营业执照号： 9 15 1 0 1 31 332 006 1 9 3 K）专用，请尊重知识产权，勿私下传播，违者追究法律责任。
|
function QRBitBuffer() {
|
this.buffer = new Array();
|
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++;
|
}
|
};
|
|
export default QRBitBuffer;
|
