git.scottworley.com Git - tl-append/blob - common.c

   1 /*
   2  * tl-append: time-logger appending shell
   3  * Copyright (C) 2023  Scott Worley <scottworley@scottworley.com>
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 #define _POSIX_C_SOURCE 2
  19 #include "common.h"
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23
  24 const char *const FILENAME = "tl.log";
  25
  26 void die(const char *message) {
  27   fputs(message, stderr);
  28   fputc('\n', stderr);
  29   exit(1);
  30 }
  31
  32 void die_err(const char *message) {
  33   perror(message);
  34   exit(1);
  35 }
  36
  37 char *encode_time(time_t t) {
  38   struct tm tm;
  39   localtime_r(&t, &tm);
  40   const size_t size = 20;
  41   char *out = (char *)malloc(size);
  42   if (strftime(out, size, "%Y %m %d %H %M %S", &tm) != size - 1)
  43     die("Couldn't format time");
  44   return out;
  45 }