1 files changed, 42 insertions, 0 deletions
diff --git a/internal/regex/flag.go b/internal/regex/flag.go
new file mode 100644
index 0000000..d3ff712
--- /dev/null
+++ b/internal/regex/flag.go
@@ -0,0 +1,42 @@
+package regex
+
+import "fmt"
+
+type Flag int
+
+const (
+	// Undefined flag set
+	Undefined Flag = iota
+	// Default is the default regex mode (positive matching)
+	Default Flag = iota
+	// Invert inverts the regex
+	Invert Flag = iota
+	// Noop means no regex matching enabled, all defaults to true
+	Noop Flag = iota
+)
+
+func NewFlag(str string) (Flag, error) {
+	switch str {
+	case "default":
+		return Default, nil
+	case "invert":
+		return Invert, nil
+	case "noop":
+		return Noop, nil
+	default:
+		return Undefined, fmt.Errorf("unknown regex flag '%s', setting to 'undefined'", str)
+	}
+}
+
+func (f Flag) String() string {
+	switch f {
+	case Default:
+		return "default"
+	case Invert:
+		return "invert"
+	case Noop:
+		return "noop"
+	default:
+		return "undefined"
+	}
+}