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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_SYNC_NOTIFIER_BASE_TIME_H_
#define CHROME_BROWSER_SYNC_NOTIFIER_BASE_TIME_H_
#include <time.h>
#include "talk/base/basictypes.h"
typedef uint64 time64;
#define kMicrosecsTo100ns (static_cast<time64>(10))
#define kMillisecsTo100ns (static_cast<time64>(10000))
#define kSecsTo100ns (1000 * kMillisecsTo100ns)
#define kMinsTo100ns (60 * kSecsTo100ns)
#define kHoursTo100ns (60 * kMinsTo100ns)
#define kDaysTo100ns (24 * kHoursTo100ns)
const time64 kMaxTime100ns = UINT64_C(9223372036854775807);
// Time difference in 100NS granularity between platform-dependent starting
// time and Jan 1, 1970.
#ifdef WIN32
// On Windows time64 is seconds since Jan 1, 1601.
#define kStart100NsTimeToEpoch (116444736000000000uI64)
#else
// On Unix time64 is seconds since Jan 1, 1970.
#define kStart100NsTimeToEpoch (0)
#endif
// Time difference in 100NS granularity between platform-dependent starting
// time and Jan 1, 1980.
#define kStart100NsTimeTo1980 \
kStart100NsTimeToEpoch + UINT64_C(3155328000000000)
#define kTimeGranularity (kDaysTo100ns)
namespace notifier {
// Get the current time represented in 100NS granularity. Different platform
// might return the value since different starting time. Win32 platform returns
// the value since Jan 1, 1601.
time64 GetCurrent100NSTime();
// Get the current time represented in 100NS granularity since epoch
// (Jan 1, 1970).
time64 GetCurrent100NSTimeSinceEpoch();
// Convert from struct tm to time64.
time64 TmToTime64(const struct tm& tm);
// Convert from time64 to struct tm.
bool Time64ToTm(time64 t, struct tm* tm);
// Convert from UTC time to local time.
bool UtcTimeToLocalTime(struct tm* tm);
// Convert from local time to UTC time.
bool LocalTimeToUtcTime(struct tm* tm);
// Returns the local time as a string suitable for logging.
// Note: This is *not* threadsafe, so only call it from the main thread.
char* GetLocalTimeAsString();
// Parses RFC 822 Date/Time format
// 5. DATE AND TIME SPECIFICATION
// 5.1. SYNTAX
//
// date-time = [ day "," ] date time ; dd mm yy
// ; hh:mm:ss zzz
// day = "Mon" / "Tue" / "Wed" / "Thu"
// / "Fri" / "Sat" / "Sun"
//
// date = 1*2DIGIT month 2DIGIT ; day month year
// ; e.g. 20 Jun 82
//
// month = "Jan" / "Feb" / "Mar" / "Apr"
// / "May" / "Jun" / "Jul" / "Aug"
// / "Sep" / "Oct" / "Nov" / "Dec"
//
// time = hour zone ; ANSI and Military
//
// hour = 2DIGIT ":" 2DIGIT [":" 2DIGIT]
// ; 00:00:00 - 23:59:59
//
// zone = "UT" / "GMT" ; Universal Time
// ; North American : UT
// / "EST" / "EDT" ; Eastern: - 5/ - 4
// / "CST" / "CDT" ; Central: - 6/ - 5
// / "MST" / "MDT" ; Mountain: - 7/ - 6
// / "PST" / "PDT" ; Pacific: - 8/ - 7
// / 1ALPHA ; Military: Z = UT;
// ; A:-1; (J not used)
// ; M:-12; N:+1; Y:+12
// / ( ("+" / "-") 4DIGIT ) ; Local differential
// ; hours+min. (HHMM)
// Return local time if ret_local_time == true, return UTC time otherwise
bool ParseRFC822DateTime(const char* str, struct tm* time,
bool ret_local_time);
// Parse a string to time span.
//
// A TimeSpan value can be represented as
// [d.]hh:mm:ss
//
// d = days (optional)
// hh = hours as measured on a 24-hour clock
// mm = minutes
// ss = seconds
bool ParseStringToTimeSpan(const char* str, time64* time_span);
} // namespace notifier
#endif // CHROME_BROWSER_SYNC_NOTIFIER_BASE_TIME_H_
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