[Boost-users] Boost.Date_Time Enhancement - Load of Time Zone Database via istream

Subject: [Boost-users] Boost.Date_Time Enhancement - Load of Time Zone Database via istream
From: Sönke Schau (schaus_at_[hidden])
Date: 2008-10-29 08:15:04

Hello,
in Boost.Date_Time there is a function to load the Time Zone Database 
from a File. 
The function load_from_file takes a string as parameter which contains a 
local filename to load the Database from.

It is sometimes desirable to load the Database from another source than 
a local file. 

To support this i suppose to add a function load and alter the existing
load_from_file in the following sense

      void load( std::istream& ifs )
      {
        string_type in_str;
        std::string  buff;
        
        if(!ifs){
          throw data_not_accessible();
        }
        std::getline(ifs, buff); // first line is column headings

        while( std::getline(ifs, buff)) {
          parse_string(buff);
        }
      }

      void load_from_file(const std::string& pathspec)
      {
        std::ifstream ifs(pathspec.c_str());
        if(!ifs){
          throw data_not_accessible(pathspec);
        }
        load( ifs );
      }

BTW: The documentation local_time.html incorrectly states that 
load_from_file returns a boolean.

Best regards
Sönke Schau