src/bin/logname.c

   1 /*
   2  * OBOS Command line apps
   3  * logname.c
   4  * Larry Cow <larrycow@free.fr>
   5  */
   6
   7 #include <stdlib.h>
   8 #include <stdio.h>
   9 #include <string.h>
  10
  11 #define DEFAULT_USER "baron"
  12
  13 #define HELP_TIP "Try '%s --help' for more information.\n"
  14
  15 #define HELP_MESSAGE "Usage: /bin/logname [OPTION]...
  16 Print the name of the current
  17
  18   --help\t display this help and exit
  19   --version\t output version information and exit
  20
  21 Reports bugs to <larrycow@free.fr>."
  22
  23 #define VERSION_MESSAGE "logname (OBOS) 1.0
  24 Written by Larry Cow
  25
  26 Coded by Larry Cow 2002
  27 Released under the MIT license with OpenBeOS."
  28
  29 void dispatch_args(char* av0, char* av1)
  30 {
  31         if (!strcmp(av1, "--help"))
  32         {
  33                 puts(HELP_MESSAGE);
  34                 return;
  35         }
  36         if (!strcmp(av1, "--version"))
  37         {
  38                 puts(VERSION_MESSAGE);
  39                 return;
  40         }
  41         printf(HELP_TIP, av0);
  42 }
  43
  44 int main(int argc, char* argv[])
  45 {
  46         if (argc > 1)
  47                 dispatch_args(argv[0], argv[1]);
  48         else
  49         {
  50                 char* user = getenv("USER");
  51                 if (user == NULL)
  52                         puts(DEFAULT_USER);
  53                 else
  54                         puts(user);
  55         }
  56         return 0;
  57 }