feat: 首次提交

components/firstui/fui-qrcode/fui-qr/lib/BitBuffer.js

@@ -0,0 +1,39 @@
+// 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;