Added boost header

test/external/boost/date_time/posix_time/conversion.hpp

@@ -0,0 +1,94 @@
+#ifndef POSIX_TIME_CONVERSION_HPP___
+#define POSIX_TIME_CONVERSION_HPP___
+
+/* Copyright (c) 2002-2005 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: 2010-06-09 14:10:13 -0400 (Wed, 09 Jun 2010) $
+ */
+
+#include <cstring>
+#include <boost/date_time/posix_time/ptime.hpp>
+#include <boost/date_time/posix_time/posix_time_duration.hpp>
+#include <boost/date_time/filetime_functions.hpp>
+#include <boost/date_time/c_time.hpp>
+#include <boost/date_time/time_resolution_traits.hpp> // absolute_value
+#include <boost/date_time/gregorian/conversion.hpp>
+
+namespace boost {
+
+namespace posix_time {
+
+
+  //! Function that converts a time_t into a ptime.
+  inline
+  ptime from_time_t(std::time_t t)
+  {
+    ptime start(gregorian::date(1970,1,1));
+    return start + seconds(static_cast<long>(t));
+  }
+
+  //! Convert a time to a tm structure truncating any fractional seconds
+  inline
+  std::tm to_tm(const boost::posix_time::ptime& t) {
+    std::tm timetm = boost::gregorian::to_tm(t.date());
+    boost::posix_time::time_duration td = t.time_of_day();
+    timetm.tm_hour = td.hours();
+    timetm.tm_min = td.minutes();
+    timetm.tm_sec = td.seconds();
+    timetm.tm_isdst = -1; // -1 used when dst info is unknown
+    return timetm;
+  }
+  //! Convert a time_duration to a tm structure truncating any fractional seconds and zeroing fields for date components
+  inline
+  std::tm to_tm(const boost::posix_time::time_duration& td) {
+    std::tm timetm;
+    std::memset(&timetm, 0, sizeof(timetm));
+    timetm.tm_hour = date_time::absolute_value(td.hours());
+    timetm.tm_min = date_time::absolute_value(td.minutes());
+    timetm.tm_sec = date_time::absolute_value(td.seconds());
+    timetm.tm_isdst = -1; // -1 used when dst info is unknown
+    return timetm;
+  }
+
+  //! Convert a tm struct to a ptime ignoring is_dst flag
+  inline
+  ptime ptime_from_tm(const std::tm& timetm) {
+    boost::gregorian::date d = boost::gregorian::date_from_tm(timetm);
+    return ptime(d, time_duration(timetm.tm_hour, timetm.tm_min, timetm.tm_sec));
+  }
+
+
+#if defined(BOOST_HAS_FTIME)
+
+  //! Function to create a time object from an initialized FILETIME struct.
+  /*! Function to create a time object from an initialized FILETIME struct.
+   * A FILETIME struct holds 100-nanosecond units (0.0000001). When
+   * built with microsecond resolution the FILETIME's sub second value
+   * will be truncated. Nanosecond resolution has no truncation.
+   *
+   * \note FILETIME is part of the Win32 API, so it is not portable to non-windows
+   * platforms.
+   *
+   * \note The function is templated on the FILETIME type, so that
+   *       it can be used with both native FILETIME and the ad-hoc
+   *       boost::date_time::winapi::file_time type.
+   */
+  template< typename TimeT, typename FileTimeT >
+  inline
+  TimeT from_ftime(const FileTimeT& ft)
+  {
+    return boost::date_time::time_from_ftime<TimeT>(ft);
+  }
+
+#endif // BOOST_HAS_FTIME
+
+} } //namespace boost::posix_time
+
+
+
+
+#endif
+