Function longestCommonPrefix

core/mount/mount_linux.go:466–491

longestCommonPrefix finds the longest common prefix in the string slice.

(strs []string)

// longestCommonPrefix finds the longest common prefix in the string slice.
func longestCommonPrefix(strs []string) string {
	if len(strs) == 0 {
		return ""
	} else if len(strs) == 1 {
		return strs[0]
	}

	// find out the min/max value by alphabetical order
	min, max := strs[0], strs[0]
	for _, str := range strs[1:] {
		if min > str {
			min = str
		}
		if max < str {
			max = str
		}
	}

	// find out the common part between min and max
	for i := 0; i < len(min) && i < len(max); i++ {
		if min[i] != max[i] {
			return min[:i]
		}
	}
	return min
}

// copyOptions copies the options.
func copyOptions(opts []string) []string {