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authorRemko Tronçon <git@el-tramo.be>2009-06-01 08:48:42 (GMT)
committerRemko Tronçon <git@el-tramo.be>2009-06-01 09:24:28 (GMT)
commit2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch)
treed46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/date_time/c_time.hpp
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+#ifndef DATE_TIME_C_TIME_HPP___
+#define DATE_TIME_C_TIME_HPP___
+
+/* Copyright (c) 2002,2003,2005 CrystalClear Software, Inc.
+ * Use, modification and distribution is subject to the
+ * Boost Software License, Version 1.0. (See accompanying
+ * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
+ * Author: Jeff Garland, Bart Garst
+ * $Date: 2008-11-12 14:37:53 -0500 (Wed, 12 Nov 2008) $
+ */
+
+
+/*! @file c_time.hpp
+ Provide workarounds related to the ctime header
+*/
+
+#include <ctime>
+#include <string> // to be able to convert from string literals to exceptions
+#include <stdexcept>
+#include <boost/throw_exception.hpp>
+#include <boost/date_time/compiler_config.hpp>
+
+//Work around libraries that don't put time_t and time in namespace std
+#ifdef BOOST_NO_STDC_NAMESPACE
+namespace std { using ::time_t; using ::time; using ::localtime;
+ using ::tm; using ::gmtime; }
+#endif // BOOST_NO_STDC_NAMESPACE
+
+//The following is used to support high precision time clocks
+#ifdef BOOST_HAS_GETTIMEOFDAY
+#include <sys/time.h>
+#endif
+
+#ifdef BOOST_HAS_FTIME
+#include <time.h>
+#endif
+
+namespace boost {
+namespace date_time {
+ //! Provides a uniform interface to some 'ctime' functions
+ /*! Provides a uniform interface to some ctime functions and
+ * their '_r' counterparts. The '_r' functions require a pointer to a
+ * user created std::tm struct whereas the regular functions use a
+ * staticly created struct and return a pointer to that. These wrapper
+ * functions require the user to create a std::tm struct and send in a
+ * pointer to it. A pointer to the user created struct will be returned.
+ * All functions do proper checking of the C function results and throw
+ * exceptions on error. Therefore the functions will never return NULL.
+ */
+ struct c_time {
+ public:
+#if defined(BOOST_DATE_TIME_HAS_REENTRANT_STD_FUNCTIONS)
+ //! requires a pointer to a user created std::tm struct
+ inline
+ static std::tm* localtime(const std::time_t* t, std::tm* result)
+ {
+ // localtime_r() not in namespace std???
+ result = localtime_r(t, result);
+ if (!result)
+ boost::throw_exception(std::runtime_error("could not convert calendar time to local time"));
+ return result;
+ }
+ //! requires a pointer to a user created std::tm struct
+ inline
+ static std::tm* gmtime(const std::time_t* t, std::tm* result)
+ {
+ // gmtime_r() not in namespace std???
+ result = gmtime_r(t, result);
+ if (!result)
+ boost::throw_exception(std::runtime_error("could not convert calendar time to UTC time"));
+ return result;
+ }
+#else // BOOST_HAS_THREADS
+
+#if (defined(_MSC_VER) && (_MSC_VER >= 1400))
+#pragma warning(push) // preserve warning settings
+#pragma warning(disable : 4996) // disable depricated localtime/gmtime warning on vc8
+#endif // _MSC_VER >= 1400
+ //! requires a pointer to a user created std::tm struct
+ inline
+ static std::tm* localtime(const std::time_t* t, std::tm* result)
+ {
+ result = std::localtime(t);
+ if (!result)
+ boost::throw_exception(std::runtime_error("could not convert calendar time to local time"));
+ return result;
+ }
+ //! requires a pointer to a user created std::tm struct
+ inline
+ static std::tm* gmtime(const std::time_t* t, std::tm* result)
+ {
+ result = std::gmtime(t);
+ if (!result)
+ boost::throw_exception(std::runtime_error("could not convert calendar time to UTC time"));
+ return result;
+ }
+#if (defined(_MSC_VER) && (_MSC_VER >= 1400))
+#pragma warning(pop) // restore warnings to previous state
+#endif // _MSC_VER >= 1400
+
+#endif // BOOST_HAS_THREADS
+ };
+}} // namespaces
+
+#endif // DATE_TIME_C_TIME_HPP___