google_update_experiment_util.cc revision 868fa2fe829687343ffae624259930155e16dbd8 
1// Copyright 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/installer/util/google_update_experiment_util.h"
6
7#include <vector>
8
9#include "base/logging.h"
10#include "base/strings/stringprintf.h"
11#include "base/strings/utf_string_conversions.h"
12#include "base/time.h"
13
14namespace installer {
15
16namespace {
17
18const char* const kDays[] =
19    { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
20
21const char* const kMonths[] =
22    { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep",
23      "Oct", "Nov", "Dec"};
24
25}
26
27string16 BuildExperimentDateString() {
28  // The Google Update experiment_labels timestamp format is:
29  // "DAY, DD0 MON YYYY HH0:MI0:SE0 TZ"
30  //  DAY = 3 character day of week,
31  //  DD0 = 2 digit day of month,
32  //  MON = 3 character month of year,
33  //  YYYY = 4 digit year,
34  //  HH0 = 2 digit hour,
35  //  MI0 = 2 digit minute,
36  //  SE0 = 2 digit second,
37  //  TZ = 3 character timezone
38  base::Time::Exploded then = {};
39  base::Time::Now().UTCExplode(&then);
40  then.year += 1;
41  DCHECK(then.HasValidValues());
42
43  return UTF8ToUTF16(base::StringPrintf("%s, %02d %s %d %02d:%02d:%02d GMT",
44                                        kDays[then.day_of_week],
45                                        then.day_of_month,
46                                        kMonths[then.month - 1],
47                                        then.year,
48                                        then.hour,
49                                        then.minute,
50                                        then.second));
51}
52
53}  // namespace installer
54
55