macros.h

   1 /*
   2  * Copyright (c) 2019, De Rais <derais@cock.li>
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for
   5  * any purpose with or without fee is hereby granted, provided that the
   6  * above copyright notice and this permission notice appear in all
   7  * copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
  10  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
  11  * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
  12  * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
  13  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  14  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  15  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  16  * PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 #define UNUSED(x) (void) (sizeof(x))
  19
  20 #define STR2(x) #x
  21 #define STR(x) STR2(x)
  22 #define L(x) __FILE__ ":" STR(__LINE__) ": " x
  23
  24 #define NUM_OF(x) (sizeof(x) / sizeof((x)[0]))
  25
  26 #define UBSAFES(x) ((x) ? (x) : "[None]")
  27
  28 extern const char *program_name;
  29
  30 #define PERROR_MESSAGE(x) perror(L(x))
  31 #define ERROR_MESSAGE(...) \
  32         do { \
  33                 fprintf(stderr, "%s", UBSAFES(program_name)); \
  34                 fprintf(stderr, ": ERROR: " __FILE__ ":" STR( \
  35                                 __LINE__) ": " __VA_ARGS__); \
  36                 fprintf(stderr, "\n"); \
  37         } while (0)
  38
  39 #ifdef WRITE_LOGS
  40 #define LOG(...) \
  41         do { \
  42                 fprintf(stderr, "%s", UBSAFES(program_name)); \
  43                 fprintf(stderr, ": %-25s", \
  44                         "LOG: " __FILE__ ":" STR( \
  45                                 __LINE__) ":"); \
  46                 fprintf(stderr, __VA_ARGS__); \
  47                 fprintf(stderr, "\n"); \
  48                 fflush(stderr); \
  49         } while (0)
  50 #else
  51 #define LOG(...)
  52 #endif