wip

www/index.js

@@ -1,3 +1,32 @@
-import * as wasm from "hello-wasm-pack";
+import {cut} from "democutter";
 
-wasm.greet();
+
+let fileSelect = document.getElementById('file');
+let startInput = document.getElementById('start');
+let endInput = document.getElementById('end');
+fileSelect.addEventListener('change', (event) => {
+    let start = parseInt(startInput.value);
+    let end = parseInt(endInput.value);
+    console.log(start, end);
+    fileSelect.disabled = true;
+    let reader = new FileReader();
+    reader.readAsArrayBuffer(fileSelect.files[0]);
+    reader.addEventListener('load', () => {
+        console.log(reader.result);
+        let result = cut(new Uint8Array(reader.result), start, end);
+        fileSelect.disabled = false;
+        save(result, "cut.dem");
+    });
+});
+
+function save(data, fileName) {
+    let a = document.createElement("a");
+    document.body.appendChild(a);
+    a.style = "display: none";
+    let blob = new Blob([data], {type: "octet/stream"});
+    let url = window.URL.createObjectURL(blob);
+    a.href = url;
+    a.download = fileName;
+    a.click();
+    window.URL.revokeObjectURL(url);
+}