niki/vendor/github.com/redis/go-redis/v9/internal/util.go

package internal

import (
	"context"
	"time"

	"github.com/redis/go-redis/v9/internal/util"
)

func Sleep(ctx context.Context, dur time.Duration) error {

	t := time.NewTimer(dur)

	defer t.Stop()

	select {

	case <-t.C:

		return nil

	case <-ctx.Done():

		return ctx.Err()

	}

}

func ToLower(s string) string {

	if isLower(s) {

		return s

	}

	b := make([]byte, len(s))

	for i := range b {

		c := s[i]

		if c >= 'A' && c <= 'Z' {

			c += 'a' - 'A'

		}

		b[i] = c

	}

	return util.BytesToString(b)

}

func isLower(s string) bool {

	for i := 0; i < len(s); i++ {

		c := s[i]

		if c >= 'A' && c <= 'Z' {

			return false

		}

	}

	return true

}