lldate.h
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- /**
- * @file lldate.h
- * @author Phoenix
- * @date 2006-02-05
- * @brief Declaration of a simple date class.
- *
- * $LicenseInfo:firstyear=2006&license=viewergpl$
- *
- * Copyright (c) 2006-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #ifndef LL_LLDATE_H
- #define LL_LLDATE_H
- #include <iosfwd>
- #include <string>
- #include "stdtypes.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.
- *
- * @pararm seconds_since_epoch The number of seconds since UTC epoch.
- */
- LLDate(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