Function TruncateString

pkg/util/strings.go:35–57

TruncateString truncates a string to a given number of runes.

(s string, maxRunes int)

// TruncateString truncates a string to a given number of runes.
func TruncateString(s string, maxRunes int) string {
	// This is a fast path (len(s) is an upper bound for RuneCountInString).
	if len(s) <= maxRunes {
		return s
	}
	n := utf8.RuneCountInString(s)
	if n <= maxRunes {
		return s
	}
	// Fast path for ASCII strings.
	if len(s) == n {
		return s[:maxRunes]
	}
	i := 0
	for pos := range s {
		if i == maxRunes {
			return s[:pos]
		}
		i++
	}
	// This code should be unreachable.
	return s
}