chrome/installer/util/google_update_experiment_util.cc

   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/time.h"
  13
  14 namespace installer {
  15
  16 namespace {
  17
  18 const char* const kDays[] =
  19     { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
  20
  21 const char* const kMonths[] =
  22     { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep",
  23       "Oct", "Nov", "Dec"};
  24
  25 }
  26
  27 string16 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