initial commits

hex/byte.go

@@ -0,0 +1,18 @@
+package hex
+
+import (
+	"sourcecode.social/reiver/go-rfc2396/digit"
+)
+
+func ByteIs(value byte) bool {
+	switch {
+	case digit.ByteIs(value):
+		return true
+	case 'A' <= value && value <= 'F':
+		return true
+	case 'a' <= value && value <= 'f':
+		return true
+	default:
+		return false
+	}
+}

hex/rune.go

@@ -0,0 +1,18 @@
+package hex
+
+import (
+	"sourcecode.social/reiver/go-rfc2396/digit"
+)
+
+func RuneIs(value rune) bool {
+	switch {
+	case digit.RuneIs(value):
+		return true
+	case 'A' <= value && value <= 'F':
+		return true
+	case 'a' <= value && value <= 'f':
+		return true
+	default:
+		return false
+	}
+}