添加登录代码

miniprogram/utils/custom.ts

@@ -0,0 +1,47 @@
+const custom = {
+  encode (input:any) { 
+    let _keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";   
+    let output = "";  
+    let chr1, chr2, chr3, enc1, enc2, enc3, enc4;  
+    let i = 0;  
+    input = this.utf8_encode(input);  
+    while (i < input.length) {  
+        chr1 = input.charCodeAt(i++);  
+        chr2 = input.charCodeAt(i++);  
+        chr3 = input.charCodeAt(i++);  
+        enc1 = chr1 >> 2;  
+        enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);  
+        enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);  
+        enc4 = chr3 & 63;  
+        if (isNaN(chr2)) {  
+            enc3 = enc4 = 64;  
+        } else if (isNaN(chr3)) {  
+            enc4 = 64;  
+        }  
+        output = output +  
+        _keyStr.charAt(enc1) + _keyStr.charAt(enc2) +  
+        _keyStr.charAt(enc3) + _keyStr.charAt(enc4);  
+    }  
+    return output;  
+  },
+  utf8_encode(input) {  
+    input = input.replace(/\r\n/g,"\n");  
+    let utftext = "";  
+    for (let n = 0; n < input.length; n++) {  
+        let c = input.charCodeAt(n);  
+        if (c < 128) {  
+            utftext += String.fromCharCode(c);  
+        } else if((c > 127) && (c < 2048)) {  
+            utftext += String.fromCharCode((c >> 6) | 192);  
+            utftext += String.fromCharCode((c & 63) | 128);  
+        } else {  
+            utftext += String.fromCharCode((c >> 12) | 224);  
+            utftext += String.fromCharCode(((c >> 6) & 63) | 128);  
+            utftext += String.fromCharCode((c & 63) | 128);  
+        }  
+  
+    }  
+    return utftext;  
+  }
+}
+module.exports = custom