From 602790e2ca33ad7f22235bf2ae548cef7db8b814 Mon Sep 17 00:00:00 2001
From: Mitch Riedstra <mitch@riedstra.us>
Date: Sat, 9 Jan 2021 15:22:27 -0500
Subject: Add a progress bar to the UI for installation via HTTP. Uses polling,
 but whatever.

---
 cmd/web/formatBytes.go | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 cmd/web/formatBytes.go

(limited to 'cmd/web/formatBytes.go')

diff --git a/cmd/web/formatBytes.go b/cmd/web/formatBytes.go
new file mode 100644
index 0000000..d5d2aab
--- /dev/null
+++ b/cmd/web/formatBytes.go
@@ -0,0 +1,29 @@
+package main
+
+import (
+	"fmt"
+	"math"
+)
+
+func formatBytes(b int64) string {
+	if b < 1024 {
+		return fmt.Sprintf("%d b", b)
+	}
+
+	s := ""
+
+	pfxs := "kmgt"
+	for i := 0; i < len(pfxs); i++ {
+		pow := math.Pow(float64(1024), float64(i+1))
+		// This one is too big, return the previous string
+		if b < int64(pow) {
+			return s
+		}
+		s = fmt.Sprintf("%.2f %cb",
+			float64(b)/(pow),
+			pfxs[i])
+	}
+
+	return s
+}
+
-- 
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