prog.h

   1 /*
   2  * Copyright 2005 Timo Hirvonen
   3  */
   4
   5 #ifndef PROG_H
   6 #define PROG_H
   7
   8 #include "compiler.h"
   9
  10 /* set in beginning of main */
  11 extern char *program_name;
  12
  13 struct option {
  14         /* short option or 0 */
  15         int short_opt;
  16
  17         /* long option or NULL */
  18         const char *long_opt;
  19
  20         /* does option have an argument */
  21         int has_arg;
  22 };
  23
  24 /*
  25  * arg: returned argument if .has_arg is 1
  26  *
  27  * returns: index to options array or -1 of no more options
  28  */
  29 int get_option(char **argv[], const struct option *options, char **arg);
  30
  31 void warn(const char *format, ...) __FORMAT(1, 2);
  32 void warn_errno(const char *format, ...) __FORMAT(1, 2);
  33 void die(const char *format, ...) __FORMAT(1, 2) __NORETURN;
  34 void die_errno(const char *format, ...) __FORMAT(1, 2) __NORETURN;
  35
  36 #endif