// time_t_wrapper.cpp: implementation of the time_t_wrapper class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "time_t_wrapper.h"

#include <time.h>
#include <iostream>
#include <iomanip>
#include <string>
#include <sstream>

// we write it as a word, so that it can be easily ignored
void time_t_to_stream( time_t val, std::ostream & out) {
    const char * months[] =
    { "jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec" };

    if ( val >= 0) {
        tm details = *localtime( &val);
        out << std::setw(4) << std::setfill('0') << details.tm_year + 1900
            << '_' 
            << std::setw(3) << std::setfill('0') << months[ details.tm_mon]
            << '_' 
            << std::setw(2) << std::setfill('0') << details.tm_mday
            << "___" 
            << std::setw(2) << std::setfill('0') << details.tm_hour
            << ':' 
            << std::setw(2) << std::setfill('0') << details.tm_min 
            << ':' 
            << std::setw(2) << std::setfill('0') << details.tm_sec;
    }
    else {
        out << "invalid_value";
    }
}

void read_time_t_from_stream( time_t & val, std::istream &in) {
    char c = 0;
    in >> c;
    if ( in) {
        if ( c == 'T') {
            // contains details as well (which we ignore)
            std::string ignore;
            in >> val >> ignore;
        }
        else {
            // no details
            in.putback( c);
            in >> val;
        }
    }
}




/*
TEST
#include <assert.h>

int main(int argc, char* argv[])
{
    time_t_wrapper<> t = time(0);
    time_t_wrapper<>::write_details() = false;
    std::cout << t << std::endl;
    time_t_wrapper<>::write_details() = true;
    std::cout << t << std::endl;

    time_t_wrapper<> t2;
    t2 = time(0);


    {
    char ch = 0;
    time_t_wrapper<>::write_details() = true;
    std::ostringstream out;
    out << t << " c";
    std::istringstream in( out.str());
    time_t_wrapper< time_t_release> t3;
    in >> t3 >> ch;
    assert( ( t == t3) && ( ch == 'c'));
    }

    {
    char ch = 0;
    time_t_wrapper<>::write_details() = false;
    std::ostringstream out;
    out << t << " c";
    std::istringstream in( out.str());
    time_t_wrapper< time_t_release> t3;
    in >> t3 >> ch;
    assert( ( t == t3) && ( ch == 'c'));
    }


    if ( t2 > t)
	    printf("Hello World!\n");
	return 0;
}

*/