Generalize tag stripping as StripTags

CHANGELOG

@@ -11,6 +11,7 @@ v1.5.1 (WIP)
 - Allow modification of scroll bar render text
 - Allow scrolling List horizontally
 - Clarify that Table rows must each have the same number of columns
+- Generalize tag stripping as StripTags
 - Make printWithStyle public and rename as PrintStyle
 - Optimize TextView (writing is 90% faster, drawing is 50% faster)
 - Remove return values from methods which return their primitive (breaks chaining)

textview.go

@@ -327,21 +327,7 @@ func (t *TextView) GetBytes(stripTags bool) []byte {
 	}
 
 	buffer := bytes.Join(t.buffer, []byte("\n"))
-	if t.regions {
-		buffer = regionPattern.ReplaceAll(buffer, nil)
-	}
-	if t.dynamicColors {
-		buffer = colorPattern.ReplaceAllFunc(buffer, func(match []byte) []byte {
-			if len(match) > 2 {
-				return nil
-			}
-			return match
-		})
-	}
-	if t.regions || t.dynamicColors {
-		buffer = escapePattern.ReplaceAll(buffer, []byte(`[$1$2]`))
-	}
-	return buffer
+	return StripTags(buffer, t.dynamicColors, t.regions)
 }
 
 // GetText returns the current text of this text view. If "stripTags" is set

util.go

@@ -97,6 +97,32 @@ func init() {
 	}
 }
 
+// StripTags returns the provided text without color and/or region tags.
+func StripTags(text []byte, colors bool, regions bool) []byte {
+	if !colors && !regions {
+		stripped := make([]byte, len(text))
+		copy(stripped, text)
+		return stripped
+	}
+
+	var stripped []byte
+	src := text
+	if regions {
+		stripped = regionPattern.ReplaceAll(text, nil)
+		src = stripped
+	}
+	if colors {
+		stripped = colorPattern.ReplaceAllFunc(src, func(match []byte) []byte {
+			if len(match) > 2 {
+				return nil
+			}
+			return match
+		})
+	}
+
+	return escapePattern.ReplaceAll(stripped, []byte(`[$1$2]`))
+}
+
 // ColorHex returns the hexadecimal value of a color as a string, prefixed with #.
 // If the color is invalid, a blank string is returned.
 func ColorHex(c tcell.Color) string {