Initial commit (squashed)

web/js/util.js

@@ -0,0 +1,56 @@
+/**
+ * https://stackoverflow.com/questions/10420352
+ */
+function humanFileSize(bytes) {
+    if (bytes === 0) {
+        return "? B"
+    }
+
+    let thresh = 1000;
+    if (Math.abs(bytes) < thresh) {
+        return bytes + ' B';
+    }
+    let units = ['k', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y'];
+    let u = -1;
+    do {
+        bytes /= thresh;
+        ++u;
+    } while (Math.abs(bytes) >= thresh && u < units.length - 1);
+
+    return bytes.toFixed(1) + units[u];
+}
+
+/**
+ * https://stackoverflow.com/questions/6312993
+ */
+function humanTime(sec_num) {
+    sec_num = Math.floor(sec_num);
+    let hours = Math.floor(sec_num / 3600);
+    let minutes = Math.floor((sec_num - (hours * 3600)) / 60);
+    let seconds = sec_num - (hours * 3600) - (minutes * 60);
+
+    if (hours < 10) {
+        hours = "0" + hours;
+    }
+    if (minutes < 10) {
+        minutes = "0" + minutes;
+    }
+    if (seconds < 10) {
+        seconds = "0" + seconds;
+    }
+    return hours + ":" + minutes + ":" + seconds;
+}
+
+function debounce(func, wait) {
+    let timeout;
+    return function() {
+        let context = this, args = arguments;
+        let later = function() {
+            timeout = null;
+            func.apply(context, args);
+        };
+        clearTimeout(timeout);
+        timeout = setTimeout(later, wait);
+        func.apply(context, args);
+    };
+}