162 lines
4.8 KiB
C++
162 lines
4.8 KiB
C++
/**
|
|
* @file lldate.h
|
|
* @author Phoenix
|
|
* @date 2006-02-05
|
|
* @brief Declaration of a simple date class.
|
|
*
|
|
* $LicenseInfo:firstyear=2006&license=viewerlgpl$
|
|
* Second Life Viewer Source Code
|
|
* Copyright (C) 2010, Linden Research, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation;
|
|
* version 2.1 of the License only.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
|
|
* $/LicenseInfo$
|
|
*/
|
|
|
|
#ifndef LL_LLDATE_H
|
|
#define LL_LLDATE_H
|
|
|
|
#include <iosfwd>
|
|
#include <string>
|
|
|
|
#include "stdtypes.h"
|
|
#include "llunit.h"
|
|
|
|
/**
|
|
* @class LLDate
|
|
* @brief This class represents a particular point in time in UTC.
|
|
*
|
|
* The date class represents a point in time after epoch - 1970-01-01.
|
|
*/
|
|
class LL_COMMON_API LLDate
|
|
{
|
|
public:
|
|
/**
|
|
* @brief Construct a date equal to epoch.
|
|
*/
|
|
LLDate();
|
|
|
|
/**
|
|
* @brief Construct a date equal to the source date.
|
|
*/
|
|
LLDate(const LLDate& date);
|
|
|
|
/**
|
|
* @brief Construct a date from a seconds since epoch value.
|
|
*
|
|
* @param seconds_since_epoch The number of seconds since UTC epoch.
|
|
*/
|
|
LLDate(LLUnit<LLUnits::Seconds, F64> seconds_since_epoch);
|
|
|
|
/**
|
|
* @brief Construct a date from a string representation
|
|
*
|
|
* The date is constructed in the <code>fromString()</code>
|
|
* method. See that method for details of supported formats.
|
|
* If that method fails to parse the date, the date is set to epoch.
|
|
* @param iso8601_date An iso-8601 compatible representation of the date.
|
|
*/
|
|
LLDate(const std::string& iso8601_date);
|
|
|
|
/**
|
|
* @brief Return the date as in ISO-8601 string.
|
|
*
|
|
* @return A string representation of the date.
|
|
*/
|
|
std::string asString() const;
|
|
std::string asRFC1123() const;
|
|
void toStream(std::ostream&) const;
|
|
bool split(S32 *year, S32 *month = NULL, S32 *day = NULL, S32 *hour = NULL, S32 *min = NULL, S32 *sec = NULL) const;
|
|
std::string toHTTPDateString (std::string fmt) const;
|
|
static std::string toHTTPDateString (tm * gmt, std::string fmt);
|
|
/**
|
|
* @brief Set the date from an ISO-8601 string.
|
|
*
|
|
* The parser only supports strings conforming to
|
|
* YYYYF-MM-DDTHH:MM:SS.FFZ where Y is year, M is month, D is day,
|
|
* H is hour, M is minute, S is second, F is sub-second, and all
|
|
* other characters are literal.
|
|
* If this method fails to parse the date, the previous date is
|
|
* retained.
|
|
* @param iso8601_date An iso-8601 compatible representation of the date.
|
|
* @return Returns true if the string was successfully parsed.
|
|
*/
|
|
bool fromString(const std::string& iso8601_date);
|
|
bool fromStream(std::istream&);
|
|
bool fromYMDHMS(S32 year, S32 month = 1, S32 day = 0, S32 hour = 0, S32 min = 0, S32 sec = 0);
|
|
|
|
/**
|
|
* @brief Return the date in seconds since epoch.
|
|
*
|
|
* @return The number of seconds since epoch UTC.
|
|
*/
|
|
F64 secondsSinceEpoch() const;
|
|
|
|
/**
|
|
* @brief Set the date in seconds since epoch.
|
|
*
|
|
* @param seconds The number of seconds since epoch UTC.
|
|
*/
|
|
void secondsSinceEpoch(F64 seconds);
|
|
|
|
/**
|
|
* @brief Create an LLDate object set to the current time.
|
|
*
|
|
* @return The number of seconds since epoch UTC.
|
|
*/
|
|
static LLDate now();
|
|
|
|
/**
|
|
* @brief Compare dates using operator< so we can order them using STL.
|
|
*
|
|
* @param rhs -- the right hand side of the comparison operator
|
|
*/
|
|
bool operator<(const LLDate& rhs) const;
|
|
|
|
/**
|
|
* @brief Remaining comparison operators in terms of operator<
|
|
* This conforms to the expectation of STL.
|
|
*
|
|
* @param rhs -- the right hand side of the comparison operator
|
|
*/
|
|
bool operator>(const LLDate& rhs) const { return rhs < *this; }
|
|
bool operator<=(const LLDate& rhs) const { return !(rhs < *this); }
|
|
bool operator>=(const LLDate& rhs) const { return !(*this < rhs); }
|
|
bool operator!=(const LLDate& rhs) const { return (*this < rhs) || (rhs < *this); }
|
|
bool operator==(const LLDate& rhs) const { return !(*this != rhs); }
|
|
|
|
/**
|
|
* @brief Compare to epoch UTC.
|
|
*/
|
|
|
|
bool isNull() const { return mSecondsSinceEpoch == 0.0; }
|
|
bool notNull() const { return mSecondsSinceEpoch != 0.0; }
|
|
|
|
|
|
private:
|
|
F64 mSecondsSinceEpoch;
|
|
};
|
|
|
|
// Helper function to stream out a date
|
|
LL_COMMON_API std::ostream& operator<<(std::ostream& s, const LLDate& date);
|
|
|
|
// Helper function to stream in a date
|
|
LL_COMMON_API std::istream& operator>>(std::istream& s, LLDate& date);
|
|
|
|
|
|
|
|
#endif // LL_LLDATE_H
|