From 3aaae870ba76d8f0907b10a61d829ad353936306 Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Sat, 20 Jan 2024 17:56:39 -0500
Subject: flatten source directory structure by removing modules

---
 volume.go | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 volume.go

(limited to 'volume.go')

diff --git a/volume.go b/volume.go
new file mode 100644
index 0000000..6f5fb31
--- /dev/null
+++ b/volume.go
@@ -0,0 +1,33 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+)
+
+type Volume float32
+
+const (
+	CubicCentimetre Volume = 1
+	Litre           Volume = 1_000
+	CubicMetre      Volume = 1_000_000
+	CubicInch       Volume = 16.38706
+)
+
+var VolumeUnits = []string{"cc", "L", "m³", "in³"}
+
+func ParseVolumeUnit(s string) (Volume, error) {
+	// Each case corresponds to a value in VolumeUnits.
+	switch s {
+	case "cc":
+		return CubicCentimetre, nil
+	case "L":
+		return Litre, nil
+	case "m³":
+		return CubicMetre, nil
+	case "in³":
+		return CubicInch, nil
+	default:
+		return *new(Volume), errors.New(fmt.Sprintf("invalid volume unit: '%s'", s))
+	}
+}
-- 
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