From c82f0e72f8534bbed1fdcccd9941d304084d782b Mon Sep 17 00:00:00 2001
From: CPunisher <1343316114@qq.com>
Date: Fri, 15 May 2020 20:10:30 +0800
Subject: [PATCH] Unicode supporting

---
 src/utils/qrcode.js | 62 +++++++++++++++++++++++++++++++--------------
 1 file changed, 43 insertions(+), 19 deletions(-)

diff --git a/src/utils/qrcode.js b/src/utils/qrcode.js
index 15a5356..a98102a 100644
--- a/src/utils/qrcode.js
+++ b/src/utils/qrcode.js
@@ -13,29 +13,53 @@
 //   http://www.denso-wave.com/qrcode/faqpatent-e.html
 //
 //---------------------------------------------------------------------
-
-//---------------------------------------------------------------------
-// QR8bitByte
-//---------------------------------------------------------------------
-/* eslint-disable */
-
 function QR8bitByte(data) {
-	this.mode = QRMode.MODE_8BIT_BYTE;
-	this.data = data;
+    this.mode = QRMode.MODE_8BIT_BYTE;
+    this.data = data;
+    this.parsedData = [];
+
+    // Added to support UTF-8 Characters
+    for (var i = 0, l = this.data.length; i < l; i++) {
+        var byteArray = [];
+        var code = this.data.charCodeAt(i);
+
+        if (code > 0x10000) {
+            byteArray[0] = 0xF0 | ((code & 0x1C0000) >>> 18);
+            byteArray[1] = 0x80 | ((code & 0x3F000) >>> 12);
+            byteArray[2] = 0x80 | ((code & 0xFC0) >>> 6);
+            byteArray[3] = 0x80 | (code & 0x3F);
+        } else if (code > 0x800) {
+            byteArray[0] = 0xE0 | ((code & 0xF000) >>> 12);
+            byteArray[1] = 0x80 | ((code & 0xFC0) >>> 6);
+            byteArray[2] = 0x80 | (code & 0x3F);
+        } else if (code > 0x80) {
+            byteArray[0] = 0xC0 | ((code & 0x7C0) >>> 6);
+            byteArray[1] = 0x80 | (code & 0x3F);
+        } else {
+            byteArray[0] = code;
+        }
+
+        this.parsedData.push(byteArray);
+    }
+
+    this.parsedData = Array.prototype.concat.apply([], this.parsedData);
+
+    if (this.parsedData.length != this.data.length) {
+        this.parsedData.unshift(191);
+        this.parsedData.unshift(187);
+        this.parsedData.unshift(239);
+    }
 }
 
 QR8bitByte.prototype = {
-
-	getLength : function(buffer) {
-		return this.data.length;
-	},
-
-	write : function(buffer) {
-		for (let i = 0; i < this.data.length; i++) {
-			// not JIS ...
-			buffer.put(this.data.charCodeAt(i), 8);
-		}
-	}
+    getLength: function (buffer) {
+        return this.parsedData.length;
+    },
+    write: function (buffer) {
+        for (var i = 0, l = this.parsedData.length; i < l; i++) {
+            buffer.put(this.parsedData[i], 8);
+        }
+    }
 };
 
 //---------------------------------------------------------------------