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/******************************* LICENCE **************************************
* Any code in this file may be redistributed or modified under the terms of
* the GNU General Public Licence as published by the Free Software
* Foundation; version 2 of the licence.
****************************** END LICENCE ***********************************/
/******************************************************************************
* Author:
* Andrew Smith, http://littlesvr.ca/misc/contactandrew.php
*
* Contributors:
*
******************************************************************************/
#include <string.h>
#include <stdio.h>
#include <time.h>
/* epoch time -> 8.4.26.1 */
void epochToLongString(time_t epoch, char* longString)
{
struct tm* timeStruct;
localtime(&epoch);
timeStruct = gmtime(&epoch);
sprintf(longString, "%4d%02d%02d%02d%02d%02d%02d",
timeStruct->tm_year + 1900,
timeStruct->tm_mon + 1,
timeStruct->tm_mday,
timeStruct->tm_hour,
timeStruct->tm_min,
timeStruct->tm_sec,
0);
/* this may not be 7.1.1 but since it's 0 who cares */
longString[16] = 0;
}
/* epoch time -> 9.1.5 */
void epochToShortString(time_t epoch, char* shortString)
{
struct tm* timeStruct;
localtime(&epoch);
timeStruct = gmtime(&epoch);
shortString[0] = timeStruct->tm_year;
shortString[1] = timeStruct->tm_mon + 1;
shortString[2] = timeStruct->tm_mday;
shortString[3] = timeStruct->tm_hour;
shortString[4] = timeStruct->tm_min;
shortString[5] = timeStruct->tm_sec;
/* gmt offset */
shortString[6] = 0;
}
/* 8.4.26.1 -> epoch time */
void longStringToEpoch(const char* longString, time_t* epoch)
{
char str[5];
int number;
struct tm timeStruct;
/* no daylight savings setting available */
timeStruct.tm_isdst = -1;
/* YEAR */
strncpy(str, longString, 4);
str[4] = '\0';
sscanf(str, "%d", &number);
timeStruct.tm_year = number - 1900;
/* END YEAR */
/* MONTH */
strncpy(str, longString + 4, 2);
str[2] = '\0';
sscanf(str, "%d", &number);
timeStruct.tm_mon = number - 1;
/* END MONTH */
/* DAY */
strncpy(str, longString + 6, 2);
str[2] = '\0';
sscanf(str, "%d", &number);
timeStruct.tm_mday = number;
/* END DAY */
/* HOUR */
strncpy(str, longString + 8, 2);
str[2] = '\0';
sscanf(str, "%d", &number);
timeStruct.tm_hour = number;
/* END HOUR */
/* MINUTE */
strncpy(str, longString + 10, 2);
str[2] = '\0';
sscanf(str, "%d", &number);
timeStruct.tm_min = number;
/* END MINUTE */
/* SECOND */
strncpy(str, longString + 12, 2);
str[2] = '\0';
sscanf(str, "%d", &number);
timeStruct.tm_sec = number;
/* END SECOND */
*epoch = mktime(&timeStruct);
}
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