39 lines
917 B
JavaScript
39 lines
917 B
JavaScript
// 本文件由FirstUI授权予新疆天衡创新研究院有限公司（手机号： 1 86140 725 4 9，身份证尾号：5A07X5）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; |