jsx/solid bundle

script/header.ts

@@ -0,0 +1,54 @@
+export interface DemoHead {
+    type: string;
+    server: string;
+    nick: string;
+    map: string;
+    game: string;
+    duration: number;
+    ticks: number;
+}
+
+DataView.prototype["getString"] = function(offset: number, length: number): String{
+    let end = typeof length == 'number' ? offset + length : this.byteLength;
+    let text = '';
+    let val = -1;
+
+    while (offset < this.byteLength && offset < end){
+        val = this.getUint8(offset++);
+        if (val === 0) break;
+        text += String.fromCharCode(val);
+    }
+
+    return text;
+};
+
+export interface GetStringDataView extends DataView {
+    getString: (offset: number, length: number) => string;
+}
+
+export async function parseHeader(file): Promise<DemoHead> {
+    const data = await readFile(file);
+    const view = new DataView(data) as GetStringDataView;
+    return {
+        'type': view.getString(0, 8),
+        'server': view.getString(16, 260),
+        'nick': view.getString(276, 260),
+        'map': view.getString(536, 260),
+        'game': view.getString(796, 260),
+        'duration': view.getFloat32(1056, true),
+        'ticks': view.getUint32(1060, true),
+    };
+}
+
+async function readFile(file: File): Promise<ArrayBuffer> {
+    return new Promise((resolve, reject) => {
+        const reader = new FileReader();
+
+        reader.onload = function () {
+            resolve(reader.result)
+        };
+        reader.onerror = reject;
+
+        reader.readAsArrayBuffer(file);
+    });
+}