From 4148776399cb7ea5e10c74dc465e4e1e682cb399 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Thu, 26 Jan 2023 00:07:39 -0700
Subject: Move the Parser to the internal package

---
 internal/hex.go | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 internal/hex.go

(limited to 'internal/hex.go')

diff --git a/internal/hex.go b/internal/hex.go
new file mode 100644
index 0000000..9ef78eb
--- /dev/null
+++ b/internal/hex.go
@@ -0,0 +1,20 @@
+// Copyright (C) 2022-2023  Luke Shumaker <lukeshu@lukeshu.com>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package internal
+
+const Hex = "0123456789abcdef"
+
+func HexToInt[T interface{ byte | rune }](c T) (byte, bool) {
+	switch {
+	case '0' <= c && c <= '9':
+		return byte(c) - '0', true
+	case 'a' <= c && c <= 'f':
+		return byte(c) - 'a' + 10, true
+	case 'A' <= c && c <= 'F':
+		return byte(c) - 'A' + 10, true
+	default:
+		return 0, false
+	}
+}
-- 
cgit v1.2.3-54-g00ecf