2010-01-25 270 views
3

我有以下时间:特定时区中的boost ::了posix_time ::的ptime

2010-01-25 03:13:34.384 - GMT Time Zone 
2010-01-25 11:13:34.384 - My Local 

我想转换成毫秒的时间戳。然而,由于我只从呼叫者 获得本地时间字符串“2010-01-25 11:13:34.384”

如果我做这种方式:

// ts is "2010-01-25 11:13:34.384" (My Local) 
boost::posix_time::ptime t(boost::posix_time::time_from_string(ts)); 
boost::posix_time::ptime end(boost::gregorian::date(1970,1,1)); 
boost::posix_time::time_duration dur = t - end; 
// epoch is 1264418014384 
// 2010-01-25 11:13:34.384 (GMT) -- But I want 2010-01-25 03:13:34.384 
// 2010-01-25 19:13:34.384 (My Local) -- But I want 2010-01-25 11:13:34.384 
long long epoch = dur.total_milliseconds(); 

有没有办法告诉升压: :posix_time,它收到的ts字符串是否属于我的本地时区?

回答

2

我在本地树(省略命名空间前缀)有这样的:

/// wall-clock translation to UTC 
    const ptime from_wall_clock(const ptime& value, 
           const time_zone_ptr& from) 
    { 
     assert(from.get()); 

     // interpret as local time 
     const local_date_time from_local(value.date(), 
      value.time_of_day(), from, 
      local_date_time::NOT_DATE_TIME_ON_ERROR); 

     // get UTC 
     return from_local.utc_time(); 
    } 
+2

我可以知道你怎么了获取当前时区? – 2010-01-26 01:12:28

+0

您将其保存在TZ环境变量中。 – 2010-01-26 02:20:05

相关问题