| // ---- time_string: thin wrapper around std::strftime -------- // |
| // |
| // Copyright Gennaro Prota 2006 |
| // |
| // Distributed under the Boost Software License, Version 1.0. |
| // (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| // |
| // ------------------------------------------------------------------ |
| // |
| // $Id: time_string.hpp 47222 2008-07-08 14:29:03Z bemandawes $ |
| |
| #ifndef BOOST_TIME_STRING_HPP_GP_20060731 |
| #define BOOST_TIME_STRING_HPP_GP_20060731 |
| |
| #include <string> |
| #include <ctime> |
| |
| #include <boost/config/warning_disable.hpp> |
| |
| namespace boost { |
| |
| // Many of the boost tools just need a quick way to obtain |
| // a formatted "run date" string or similar. This is one. |
| // |
| // In case of failure false is returned and result is |
| // unchanged. |
| // |
| inline |
| bool time_string(std::string & result |
| , const std::string & format = "%X UTC, %A %d %B %Y") |
| { |
| // give up qualifying names and using std::size_t, |
| // to avoid including "config.hpp" |
| using namespace std; |
| |
| const int sz = 256; |
| char buffer [ sz ] = { 0 }; |
| const time_t no_cal_time ( -1 ); |
| time_t tod; |
| |
| const bool ok = |
| time ( &tod ) != no_cal_time |
| && strftime( buffer, sz, format.c_str(), gmtime( &tod ) ) != 0 |
| ; |
| |
| if (ok) |
| result = buffer; |
| |
| return ok; |
| } |
| |
| } |
| |
| #endif // include guard |
