tailscale/words/words.go

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// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
// Package words contains accessors for some nice words.
package words
import (
"bytes"
_ "embed"
"strings"
"sync"
)
//go:embed tails.txt
var tailsTxt []byte
//go:embed scales.txt
var scalesTxt []byte
var (
once sync.Once
tails, scales []string
)
// Tails returns words about tails.
func Tails() []string {
once.Do(initWords)
return tails
}
// Scales returns words about scales.
func Scales() []string {
once.Do(initWords)
return scales
}
func initWords() {
tails = parseWords(tailsTxt)
scales = parseWords(scalesTxt)
}
func parseWords(txt []byte) []string {
n := bytes.Count(txt, []byte{'\n'})
ret := make([]string, 0, n)
for len(txt) > 0 {
word := txt
i := bytes.IndexByte(txt, '\n')
if i != -1 {
word, txt = word[:i], txt[i+1:]
} else {
txt = nil
}
if word := strings.TrimSpace(string(word)); word != "" && word[0] != '#' {
ret = append(ret, word)
}
}
return ret
}