redAcore/DateTimeCore.cpp

/*
 * DateTimeCore.cpp
 *
 *  Created on: 3 March 2017
 *      Author: wentzelc
 */

// Standard C/C++ Libraries
#include <sys/time.h>
#include <stdio.h>
#include <time.h>

// redA Libraries
#include "DateTimeCore.h"

//---------------------------------------------------------------------------

// Variable used to temp values with
static char    ReturnStr[30];

//---------------------------------------------------------------------------

// Set current time on real-time clock
bool  SetTime( unsigned char Hours, unsigned char Minutes, unsigned char Seconds )
{
    struct tm       NewTime;
    struct timeval  tv;
    struct timezone tz;

    // Get current date and time
    gettimeofday( &tv, &tz);

    // Change to new time
    localtime_r( &tv.tv_sec, &NewTime );

    NewTime.tm_hour = Hours;
    NewTime.tm_min  = Minutes;
    NewTime.tm_sec  = Seconds;

    // Convert back
    tv.tv_sec  = mktime( &NewTime );
    tv.tv_usec = 0;

    // Set date and new time
    settimeofday( &tv, &tz);
    return true;
}
//---------------------------------------------------------------------------

// Get current time from real-time clock
bool GetTime( unsigned char &Hours, unsigned char &Minutes, unsigned char &Seconds )
{
    struct tm   CurrentTime;
    time_t      UTC;

    // Get current date and time
    time( &UTC );
    localtime_r( &UTC, &CurrentTime );

    // Extract time
    Hours   = CurrentTime.tm_hour;
    Minutes = CurrentTime.tm_min;
    Seconds = CurrentTime.tm_sec;

    return true;
}
//---------------------------------------------------------------------------

// Set current date on real-time clock
bool SetDate( unsigned char Day, unsigned char Month, unsigned Year )
{
    struct tm       NewDate;
    struct timeval  tv;
    struct timezone tz;

    // Get current date and time
    gettimeofday( &tv, &tz );

    // Change to new time
    localtime_r( &tv.tv_sec, &NewDate );

    NewDate.tm_year = Year - 1900;
    NewDate.tm_mon  = Month - 1;
    NewDate.tm_mday = Day;

    // Convert back
    tv.tv_sec  = mktime( &NewDate );
    tv.tv_usec = 0;

    // Set date and new time
    settimeofday( &tv, &tz);

    return true;
}
//---------------------------------------------------------------------------

// Get current data from real-time clock
bool GetDate( unsigned char &Day, unsigned char &Month, unsigned &Year )
{
    struct tm   CurrentDate;
    time_t      UTC;

    // Get current date and time
    time( &UTC );
    localtime_r( &UTC, &CurrentDate );

    // Extract date
    Day   = CurrentDate.tm_mday;
    Month = CurrentDate.tm_mon + 1;
    Year  = CurrentDate.tm_year + 1900;

    return true;
}
//---------------------------------------------------------------------------

// Get the current date in a string
char const *  GetDateStr( const char * DateSeparator )
{
    unsigned char  Day;
    unsigned char  Month;
    unsigned int   Year;

    // Get Date
    GetDate( Day, Month, Year );

    // Build String
    sprintf( ReturnStr, "%04d%s%02d%s%02d",
                        Year, ((DateSeparator)? DateSeparator : ""), Month, ((DateSeparator)? DateSeparator : ""), Day );

    // Return value
    return (ReturnStr);
}
//---------------------------------------------------------------------------

char const *  GetTimeStr( const char * TimeSeparator )
{
    unsigned char  Hours;
    unsigned char  Minutes;
    unsigned char  Seconds;

    // Get Date & Time
    GetTime( Hours, Minutes, Seconds );

    // Build String
    sprintf( ReturnStr, "%02d%s%02d%s%02d",
                        Hours, ((TimeSeparator)? TimeSeparator : ""), Minutes, ((TimeSeparator)? TimeSeparator : ""), Seconds );

    return (ReturnStr);
}
//---------------------------------------------------------------------------

char const *  GetDateTimeStr( const char * DateSeparator, const char * TimeSeparator )
{
    unsigned char  Day;
    unsigned char  Month;
    unsigned int   Year;
    unsigned char  Hours;
    unsigned char  Minutes;
    unsigned char  Seconds;

    // Get Date & Time
    GetDate( Day, Month, Year );
    GetTime( Hours, Minutes, Seconds );

    // Build String
    sprintf( ReturnStr, "%04d%s%02d%s%02d %02d%s%02d%s%02d",
                        Year, ((DateSeparator)? DateSeparator : ""), Month, ((DateSeparator)? DateSeparator : ""), Day,
                        Hours, ((TimeSeparator)? TimeSeparator : ""), Minutes, ((TimeSeparator)? TimeSeparator : ""), Seconds );

    return (ReturnStr);
}
//---------------------------------------------------------------------------

// Get current time from real-time clock
bool ReadTime( const time_t EpochTime, unsigned char &Hours, unsigned char &Minutes, unsigned char &Seconds )
{
    struct tm   CurrentTime;

    // Get current date and time
    localtime_r( &EpochTime, &CurrentTime );

    // Extract time
    Hours   = CurrentTime.tm_hour;
    Minutes = CurrentTime.tm_min;
    Seconds = CurrentTime.tm_sec;

    return true;
}
//---------------------------------------------------------------------------

bool ReadDate( const time_t EpochTime, unsigned char &Day, unsigned char &Month, unsigned &Year )
{
    struct tm   CurrentDate;

    // Get current date and time
    localtime_r( &EpochTime, &CurrentDate );

    // Extract date
    Day   = CurrentDate.tm_mday;
    Month = CurrentDate.tm_mon + 1;
    Year  = CurrentDate.tm_year + 1900;

    return true;
}
//---------------------------------------------------------------------------

// Get the current date in a string
char const *  BuildDateStr( const time_t EpochTime, const char * DateSeparator )
{
    unsigned char  Day;
    unsigned char  Month;
    unsigned int   Year;

    // Get Date
    ReadDate( EpochTime, Day, Month, Year );

    // Build String
    sprintf( ReturnStr, "%04d%s%02d%s%02d",
                        Year, ((DateSeparator)? DateSeparator : ""), Month, ((DateSeparator)? DateSeparator : ""), Day );

    // Return value
    return (ReturnStr);
}
//---------------------------------------------------------------------------

char const *  BuildTimeStr( const time_t EpochTime, const char * TimeSeparator )
{
    unsigned char  Hours;
    unsigned char  Minutes;
    unsigned char  Seconds;

    // Get Date & Time
    ReadTime( EpochTime, Hours, Minutes, Seconds );

    // Build String
    sprintf( ReturnStr, "%02d%s%02d%s%02d",
                        Hours, ((TimeSeparator)? TimeSeparator : ""), Minutes, ((TimeSeparator)? TimeSeparator : ""), Seconds );

    return (ReturnStr);
}
//---------------------------------------------------------------------------

char const * BuildDateTimeStr( const time_t EpochTime, const char * DateSeparator, const char * TimeSeparator )
{
    unsigned char  Day;
    unsigned char  Month;
    unsigned int   Year;
    unsigned char  Hours;
    unsigned char  Minutes;
    unsigned char  Seconds;

    // Get Date & Time
    ReadDate( EpochTime, Day, Month, Year );
    ReadTime( EpochTime, Hours, Minutes, Seconds );

    // Build String
    sprintf( ReturnStr, "%04d%s%02d%s%02d %02d%s%02d%s%02d",
                        Year, ((DateSeparator)? DateSeparator : ""), Month, ((DateSeparator)? DateSeparator : ""), Day,
                        Hours, ((TimeSeparator)? TimeSeparator : ""), Minutes, ((TimeSeparator)? TimeSeparator : ""), Seconds );

    return (ReturnStr);
}