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 google_update {
  15
  16 #if defined(OS_WIN)
  17 const wchar_t kExperimentLabels[] = L"experiment_labels";
  18 #endif
  19
  20 const base::char16 kExperimentLabelSeparator = ';';
  21
  22 }  // namespace google_update
  23
  24 namespace installer {
  25
  26 namespace {
  27
  28 const char* const kDays[] =
  29     { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
  30
  31 const char* const kMonths[] =
  32     { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep",
  33       "Oct", "Nov", "Dec"};
  34
  35 }
  36
  37 base::string16 BuildExperimentDateString(const base::Time& current_time) {
  38   // The Google Update experiment_labels timestamp format is:
  39   // "DAY, DD0 MON YYYY HH0:MI0:SE0 TZ"
  40   //  DAY = 3 character day of week,
  41   //  DD0 = 2 digit day of month,
  42   //  MON = 3 character month of year,
  43   //  YYYY = 4 digit year,
  44   //  HH0 = 2 digit hour,
  45   //  MI0 = 2 digit minute,
  46   //  SE0 = 2 digit second,
  47   //  TZ = 3 character timezone
  48   base::Time::Exploded then = {};
  49   current_time.UTCExplode(&then);
  50   then.year += 1;
  51   DCHECK(then.HasValidValues());
  52
  53   return base::UTF8ToUTF16(
  54       base::StringPrintf("%s, %02d %s %d %02d:%02d:%02d GMT",
  55                          kDays[then.day_of_week],
  56                          then.day_of_month,
  57                          kMonths[then.month - 1],
  58                          then.year,
  59                          then.hour,
  60                          then.minute,
  61                          then.second));
  62 }
  63
  64 }  // namespace installer
  65