implement directory navigator in svelte

svelte/src/util/Formatting.svelte

@@ -0,0 +1,61 @@
+<script context="module">
+export const formatNumber = (amt, precision) => {
+	if (precision < 3) { precision = 3; }
+	if (amt >= 1e6) {
+		return (amt/1e6).toPrecision(precision) + "M";
+	} else if (amt >= 1e3) {
+		return (amt/1e3).toPrecision(precision) + "k";
+	}
+	return amt
+}
+
+export const formatThousands = (x) => {
+	return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, " ");
+}
+
+export const formatDataVolume = (amt, precision) => {
+	if (precision < 3) { precision = 3; }
+	if (amt >= 1e18) {
+		return (amt/1e18).toPrecision(precision) + " EB";
+	}else if (amt >= 1e15) {
+		return (amt/1e15).toPrecision(precision) + " PB";
+	}else if (amt >= 1e12) {
+		return (amt/1e12).toPrecision(precision) + " TB";
+	} else if (amt >= 1e9) {
+		return (amt/1e9).toPrecision(precision) + " GB";
+	} else if (amt >= 1e6) {
+		return (amt/1e6).toPrecision(precision) + " MB";
+	} else if (amt >= 1e3) {
+		return (amt/1e3).toPrecision(precision) + " kB";
+	}
+	return amt + " B"
+}
+
+const second = 1000
+const minute = second*60
+const hour = minute*60
+const day = hour*24
+
+export const formatDuration = (ms) => {
+	let res = ""
+	if (ms >= day)    { res += Math.floor(ms/day) + "d " }
+	if (ms >= hour)   { res += Math.floor((ms%day)/hour) + "h " }
+	if (ms >= minute) { res += Math.floor((ms%hour)/minute) + "m " }
+	return res + ((ms%minute)/second).toFixed(3) + "s"
+}
+
+export const formatDate = (date, hours, minutes, seconds) => {
+	if (!(date instanceof Date)) {
+		date = new Date(date)
+	}
+
+	let dateStr = date.getFullYear()
+		+"-"+("00"+(date.getMonth()+1)).slice(-2)
+		+"-"+("00"+date.getDate()).slice(-2)
+
+	if (hours)   { dateStr += " "+("00"+date.getHours()).slice(-2) }
+	if (minutes) { dateStr += ":"+("00"+date.getMinutes()).slice(-2) }
+	if (seconds) { dateStr += ":"+("00"+date.getMinutes()).slice(-2) }
+	return dateStr
+}
+</script>