func()

in jws/jws.go [54:94]

• 32 lines of code
• 9 McCabe index (conditional complexity)

func (c *ClaimSet) encode() (string, error) {
	// Reverting time back for machines whose time is not perfectly in sync.
	// If client machine's time is in the future according
	// to Google servers, an access token will not be issued.
	now := time.Now().Add(-10 * time.Second)
	if c.Iat == 0 {
		c.Iat = now.Unix()
	}
	if c.Exp == 0 {
		c.Exp = now.Add(time.Hour).Unix()
	}
	if c.Exp < c.Iat {
		return "", fmt.Errorf("jws: invalid Exp = %v; must be later than Iat = %v", c.Exp, c.Iat)
	}

	b, err := json.Marshal(c)
	if err != nil {
		return "", err
	}

	if len(c.PrivateClaims) == 0 {
		return base64.RawURLEncoding.EncodeToString(b), nil
	}

	// Marshal private claim set and then append it to b.
	prv, err := json.Marshal(c.PrivateClaims)
	if err != nil {
		return "", fmt.Errorf("jws: invalid map of private claims %v", c.PrivateClaims)
	}

	// Concatenate public and private claim JSON objects.
	if !bytes.HasSuffix(b, []byte{'}'}) {
		return "", fmt.Errorf("jws: invalid JSON %s", b)
	}
	if !bytes.HasPrefix(prv, []byte{'{'}) {
		return "", fmt.Errorf("jws: invalid JSON %s", prv)
	}
	b[len(b)-1] = ','         // Replace closing curly brace with a comma.
	b = append(b, prv[1:]...) // Append private claims.
	return base64.RawURLEncoding.EncodeToString(b), nil
}