first commit

assets/scripts/libs/convert.ts

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+
+
+export class convert {
+    stringToByte(str) {
+        var bytes = new Array();
+        var len, c;
+        len = str.length;
+        for (var i = 0; i < len; i++) {
+            c = str.charCodeAt(i);
+            if (c >= 0x010000 && c <= 0x10FFFF) {
+                bytes.push(((c >> 18) & 0x07) | 0xF0);
+                bytes.push(((c >> 12) & 0x3F) | 0x80);
+                bytes.push(((c >> 6) & 0x3F) | 0x80);
+                bytes.push((c & 0x3F) | 0x80);
+            } else if (c >= 0x000800 && c <= 0x00FFFF) {
+                bytes.push(((c >> 12) & 0x0F) | 0xE0);
+                bytes.push(((c >> 6) & 0x3F) | 0x80);
+                bytes.push((c & 0x3F) | 0x80);
+            } else if (c >= 0x000080 && c <= 0x0007FF) {
+                bytes.push(((c >> 6) & 0x1F) | 0xC0);
+                bytes.push((c & 0x3F) | 0x80);
+            } else {
+                bytes.push(c & 0xFF);
+            }
+        }
+        return bytes;
+    }
+
+    byteToString(arr) {
+        if (typeof arr === 'string') {
+            return arr;
+        }
+        var str = '', _arr = arr;
+        for (var i = 0; i < _arr.length; i++) {
+            var one = _arr[i].toString(2), v = one.match(/^1+?(?=0)/);
+            if (v && one.length == 8) {
+                var bytesLength = v[0].length;
+                var store = _arr[i].toString(2).slice(7 - bytesLength);
+                for (var st = 1; st < bytesLength; st++) {
+                    store += _arr[st + i].toString(2).slice(2);
+                }
+                str += String.fromCharCode(parseInt(store, 2));
+                i += bytesLength - 1;
+            } else {
+                str += String.fromCharCode(_arr[i]);
+            }
+        }
+        return str;
+    }
+}