PWGen/pwgenerator/funcs_charset.go

package pwgenerator

// Len returns the length of a CharSet (needed for sort.Interface).
func (c *CharSet) Len() (l int) {

	l = len(*c)

	return
}

// Less returns true if item at index i is "less than" (sorts before) item at index j (needed for sort.Interface).
func (c *CharSet) Less(i, j int) (isBefore bool) {

	if (*c)[i] < (*c)[j] {
		isBefore = true
	}

	return
}

// RandChar returns a random character from a CharSet.
func (c *CharSet) RandChar() (char Char, err error) {

	var selectIdx int

	if selectIdx, err = saferRandInt(len(*c) - 1); err != nil {
		return
	}

	char = (*c)[selectIdx]

	return
}

// String returns a string from a CharSet.
func (c *CharSet) String() (s string) {

	for _, i := range *c {
		s += string(i)
	}

	return
}

// Swap will swap the position of the item at index i and the item at index j in a CharSet (needed for sort.Interface).
func (c *CharSet) Swap(i, j int) {

	var iVal Char = (*c)[i]
	var jVal Char = (*c)[j]

	(*c)[i] = jVal
	(*c)[j] = iVal

	return
}