func checkIfMatch()

in internal/vfs/serving/serving.go [130:158]

• 28 lines of code
• 8 McCabe index (conditional complexity)

func checkIfMatch(w http.ResponseWriter, r *http.Request) condResult {
	im := r.Header.Get("If-Match")
	if im == "" {
		return condNone
	}
	for {
		im = textproto.TrimString(im)
		if len(im) == 0 {
			break
		}
		if im[0] == ',' {
			im = im[1:]
			continue
		}
		if im[0] == '*' {
			return condTrue
		}
		etag, remain := scanETag(im)
		if etag == "" {
			break
		}
		if etagStrongMatch(etag, w.Header().Get("Etag")) {
			return condTrue
		}
		im = remain
	}

	return condFalse
}