Initial working version

2022-12-22 20:22:22 +11:00
parent ce9675a1cc
commit ced7fa5092
902 changed files with 150252 additions and 0 deletions
@@ -0,0 +1,41 @@
+import { PACKET_TYPES } from "./commons.js";
+const withNativeBlob = typeof Blob === "function" ||
+    (typeof Blob !== "undefined" &&
+        Object.prototype.toString.call(Blob) === "[object BlobConstructor]");
+const withNativeArrayBuffer = typeof ArrayBuffer === "function";
+// ArrayBuffer.isView method is not defined in IE10
+const isView = obj => {
+    return typeof ArrayBuffer.isView === "function"
+        ? ArrayBuffer.isView(obj)
+        : obj && obj.buffer instanceof ArrayBuffer;
+};
+const encodePacket = ({ type, data }, supportsBinary, callback) => {
+    if (withNativeBlob && data instanceof Blob) {
+        if (supportsBinary) {
+            return callback(data);
+        }
+        else {
+            return encodeBlobAsBase64(data, callback);
+        }
+    }
+    else if (withNativeArrayBuffer &&
+        (data instanceof ArrayBuffer || isView(data))) {
+        if (supportsBinary) {
+            return callback(data);
+        }
+        else {
+            return encodeBlobAsBase64(new Blob([data]), callback);
+        }
+    }
+    // plain string
+    return callback(PACKET_TYPES[type] + (data || ""));
+};
+const encodeBlobAsBase64 = (data, callback) => {
+    const fileReader = new FileReader();
+    fileReader.onload = function () {
+        const content = fileReader.result.split(",")[1];
+        callback("b" + content);
+    };
+    return fileReader.readAsDataURL(data);
+};
+export default encodePacket;