65 lines
920 B
Go
65 lines
920 B
Go
package pw
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//go:generate go run words_generate.go
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import (
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"log"
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"strings"
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"crypto/rand"
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"math/big"
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)
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type Strength int
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const (
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StrengthOnline Strength = 4
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StrengthOffline Strength = 6
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StrengthCrypto Strength = 8
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)
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type Mode int
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const (
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ModeShort Mode = iota
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ModeLong
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)
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type Generator struct {
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Mode
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Strength
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}
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func NewGenerator(m Mode, s Strength) Generator {
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return Generator{
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Mode: m,
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Strength: s,
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}
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}
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func (g Generator) Next() string {
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n := int(g.Strength)
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s := []string{}
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for i := 0; i < n; i++ {
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s = append(s, g.GenerateWord());
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}
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return strings.Join(s, " ")
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}
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func (g Generator) GenerateWord() string {
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var wordsList []string
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if g.Mode == ModeShort {
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wordsList = WordsShort
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}
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if g.Mode == ModeLong {
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wordsList = WordsLong
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}
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c := len(wordsList)
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i, err := rand.Int(rand.Reader, big.NewInt(int64(c)))
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if err != nil {
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log.Fatal(err)
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}
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return wordsList[i.Int64()]
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}
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