| // Copyright 2019 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package session |
| |
| import ( |
| "regexp" |
| "strings" |
| ) |
| |
| // Matches "user" or "user@domain". |
| var emailRegexp = regexp.MustCompile("^([^@]+)(?:@([^@]+))?$") |
| |
| // NormalizeEmail normalizes the supplied email address as would be done for GAIA login. |
| // The address is lowercased, periods in the username are removed, and a gmail.com domain is appended if needed. |
| func NormalizeEmail(email string, removeDots bool) (string, error) { |
| matches := emailRegexp.FindStringSubmatch(email) |
| if matches == nil { |
| return strings.ToLower(email), nil |
| } |
| |
| user := strings.ToLower(matches[1]) |
| domain := strings.ToLower(matches[2]) |
| if domain == "" || domain == "gmail.com" { |
| if removeDots { |
| user = strings.Replace(user, ".", "", -1) |
| } |
| domain = "gmail.com" |
| } |
| |
| return user + "@" + domain, nil |
| } |
