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/*
***************************************************************************
*
* Author: Teunis van Beelen
*
* Copyright (C) 2014 - 2023 Teunis van Beelen
*
* Email: teuniz@protonmail.com
*
***************************************************************************
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
***************************************************************************
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "utc_date_time.h"
#include "date_time_stamp_parser.h"
#define DATE_TIME_STAMP_LEN 20
long long parse_date_time_stamp(const char *src)
{
int i, len, probes;
char str[1024],
*ptr;
len = strlen(src);
if(len < DATE_TIME_STAMP_LEN + 4) goto ERROR;
strlcpy(str, src, 1024);
len = strlen(str);
if(len < DATE_TIME_STAMP_LEN) goto ERROR;
probes = len - DATE_TIME_STAMP_LEN + 1;
for(i=0; i<probes; i++)
{
ptr = str + i;
if((ptr[2] != '-') || (ptr[6] != '-') || (ptr[11] != '_') || (ptr[14] != 'h') || (ptr[17] != 'm')) continue;
if((ptr[0] < '0') || (ptr[0] > '9') || (ptr[1] < '0') || (ptr[1] > '9') ||
(ptr[7] < '0') || (ptr[7] > '9') || (ptr[8] < '0') || (ptr[8] > '9') ||
(ptr[9] < '0') || (ptr[9] > '9') || (ptr[10] < '0') || (ptr[10] > '9')) continue;
if((ptr[12] < '0') || (ptr[12] > '9') || (ptr[13] < '0') || (ptr[13] > '9') ||
(ptr[15] < '0') || (ptr[15] > '9') || (ptr[16] < '0') || (ptr[16] > '9') ||
(ptr[18] < '0') || (ptr[18] > '9') || (ptr[19] < '0') || (ptr[19] > '9')) continue;
break;
}
if(i == probes) goto ERROR;
/*
* We are looking for a string formatted like this:
* 03-MAY-2013_14h45m49
*
*/
ptr[DATE_TIME_STAMP_LEN] = 0;
ptr[2] = 0;
ptr[6] = 0;
ptr[11] = 0;
ptr[14] = 0;
ptr[17] = 0;
date_time_t dat_time;
dat_time.day = atoi(ptr);
dat_time.year = atoi(ptr + 7);
dat_time.hour = atoi(ptr + 12);
dat_time.minute = atoi(ptr + 15);
dat_time.second = atoi(ptr + 18);
if((dat_time.day < 1) || (dat_time.day > 31) || (dat_time.year < 1970) || (dat_time.year > 2999) ||
(dat_time.hour < 0) || (dat_time.hour > 23) || (dat_time.minute < 0) || (dat_time.minute > 59) ||
(dat_time.second < 0) || (dat_time.second > 59)) goto ERROR;
dat_time.month = -1;
if(!strcmp(ptr + 3, "JAN")) dat_time.month = 1;
if(!strcmp(ptr + 3, "FEB")) dat_time.month = 2;
if(!strcmp(ptr + 3, "MAR")) dat_time.month = 3;
if(!strcmp(ptr + 3, "APR")) dat_time.month = 4;
if(!strcmp(ptr + 3, "MAY")) dat_time.month = 5;
if(!strcmp(ptr + 3, "JUN")) dat_time.month = 6;
if(!strcmp(ptr + 3, "JUL")) dat_time.month = 7;
if(!strcmp(ptr + 3, "AUG")) dat_time.month = 8;
if(!strcmp(ptr + 3, "SEP")) dat_time.month = 9;
if(!strcmp(ptr + 3, "OCT")) dat_time.month = 10;
if(!strcmp(ptr + 3, "NOV")) dat_time.month = 11;
if(!strcmp(ptr + 3, "DEC")) dat_time.month = 12;
if(dat_time.month == -1) goto ERROR;
long long utc_time;
date_time_to_utc(&utc_time, dat_time);
return utc_time;
ERROR:
return -1LL;
}
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