ipc/chromium/src/base/time.cc

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
   4 // Use of this source code is governed by a BSD-style license that can be
   5 // found in the LICENSE file.
   6
   7 #include "base/time.h"
   8 #include "base/string_util.h"
   9 #include "base/sys_string_conversions.h"
  10 #include "prtime.h"
  11
  12 #include "base/logging.h"
  13
  14 namespace base {
  15
  16 // TimeDelta ------------------------------------------------------------------
  17
  18 int TimeDelta::InDays() const {
  19   return static_cast<int>(delta_ / Time::kMicrosecondsPerDay);
  20 }
  21
  22 int TimeDelta::InHours() const {
  23   return static_cast<int>(delta_ / Time::kMicrosecondsPerHour);
  24 }
  25
  26 int TimeDelta::InMinutes() const {
  27   return static_cast<int>(delta_ / Time::kMicrosecondsPerMinute);
  28 }
  29
  30 double TimeDelta::InSecondsF() const {
  31   return static_cast<double>(delta_) / Time::kMicrosecondsPerSecond;
  32 }
  33
  34 int64_t TimeDelta::InSeconds() const {
  35   return delta_ / Time::kMicrosecondsPerSecond;
  36 }
  37
  38 double TimeDelta::InMillisecondsF() const {
  39   return static_cast<double>(delta_) / Time::kMicrosecondsPerMillisecond;
  40 }
  41
  42 int64_t TimeDelta::InMilliseconds() const {
  43   return delta_ / Time::kMicrosecondsPerMillisecond;
  44 }
  45
  46 int64_t TimeDelta::InMicroseconds() const { return delta_; }
  47
  48 // Time -----------------------------------------------------------------------
  49
  50 // static
  51 Time Time::FromTimeT(time_t tt) {
  52   if (tt == 0) return Time();  // Preserve 0 so we can tell it doesn't exist.
  53   return Time((tt * kMicrosecondsPerSecond) + kTimeTToMicrosecondsOffset);
  54 }
  55
  56 time_t Time::ToTimeT() const {
  57   if (us_ == 0) return 0;  // Preserve 0 so we can tell it doesn't exist.
  58   return (us_ - kTimeTToMicrosecondsOffset) / kMicrosecondsPerSecond;
  59 }
  60
  61 // static
  62 Time Time::FromDoubleT(double dt) {
  63   return Time((dt * static_cast<double>(kMicrosecondsPerSecond)) +
  64               kTimeTToMicrosecondsOffset);
  65 }
  66
  67 double Time::ToDoubleT() const {
  68   if (us_ == 0) return 0;  // Preserve 0 so we can tell it doesn't exist.
  69   return (static_cast<double>(us_ - kTimeTToMicrosecondsOffset) /
  70           static_cast<double>(kMicrosecondsPerSecond));
  71 }
  72
  73 Time Time::LocalMidnight() const {
  74   Exploded exploded;
  75   LocalExplode(&exploded);
  76   exploded.hour = 0;
  77   exploded.minute = 0;
  78   exploded.second = 0;
  79   exploded.millisecond = 0;
  80   return FromLocalExploded(exploded);
  81 }
  82
  83 // static
  84 bool Time::FromString(const wchar_t* time_string, Time* parsed_time) {
  85   DCHECK((time_string != NULL) && (parsed_time != NULL));
  86   std::string ascii_time_string = SysWideToUTF8(time_string);
  87   if (ascii_time_string.length() == 0) return false;
  88   PRTime result_time = 0;
  89   PRStatus result =
  90       PR_ParseTimeString(ascii_time_string.c_str(), PR_FALSE, &result_time);
  91   if (PR_SUCCESS != result) return false;
  92   result_time += kTimeTToMicrosecondsOffset;
  93   *parsed_time = Time(result_time);
  94   return true;
  95 }
  96
  97 }  // namespace base