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 +1,51 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const commons_js_1 = require("./commons.js");
+const base64_arraybuffer_1 = require("base64-arraybuffer");
+const withNativeArrayBuffer = typeof ArrayBuffer === "function";
+const decodePacket = (encodedPacket, binaryType) => {
+    if (typeof encodedPacket !== "string") {
+        return {
+            type: "message",
+            data: mapBinary(encodedPacket, binaryType)
+        };
+    }
+    const type = encodedPacket.charAt(0);
+    if (type === "b") {
+        return {
+            type: "message",
+            data: decodeBase64Packet(encodedPacket.substring(1), binaryType)
+        };
+    }
+    const packetType = commons_js_1.PACKET_TYPES_REVERSE[type];
+    if (!packetType) {
+        return commons_js_1.ERROR_PACKET;
+    }
+    return encodedPacket.length > 1
+        ? {
+            type: commons_js_1.PACKET_TYPES_REVERSE[type],
+            data: encodedPacket.substring(1)
+        }
+        : {
+            type: commons_js_1.PACKET_TYPES_REVERSE[type]
+        };
+};
+const decodeBase64Packet = (data, binaryType) => {
+    if (withNativeArrayBuffer) {
+        const decoded = (0, base64_arraybuffer_1.decode)(data);
+        return mapBinary(decoded, binaryType);
+    }
+    else {
+        return { base64: true, data }; // fallback for old browsers
+    }
+};
+const mapBinary = (data, binaryType) => {
+    switch (binaryType) {
+        case "blob":
+            return data instanceof ArrayBuffer ? new Blob([data]) : data;
+        case "arraybuffer":
+        default:
+            return data; // assuming the data is already an ArrayBuffer
+    }
+};
+exports.default = decodePacket;