arg.h

   1 /*
   2  * Copy me if you can.
   3  * by 20h
   4  */
   5
   6 #ifndef ARG_H__
   7 #define ARG_H__
   8
   9 extern char *argv0;
  10
  11 /* use main(int argc, char *argv[]) */
  12 #define ARGBEGIN        for (argv0 = *argv, argv++, argc--;\
  13                                         argv[0] && argv[0][1]\
  14                                         && argv[0][0] == '-';\
  15                                         argc--, argv++) {\
  16                                 char argc_;\
  17                                 char **argv_;\
  18                                 int brk_;\
  19                                 if (argv[0][1] == '-' && argv[0][2] == '\0') {\
  20                                         argv++;\
  21                                         argc--;\
  22                                         break;\
  23                                 }\
  24                                 for (brk_ = 0, argv[0]++, argv_ = argv;\
  25                                                 argv[0][0] && !brk_;\
  26                                                 argv[0]++) {\
  27                                         if (argv_ != argv)\
  28                                                 break;\
  29                                         argc_ = argv[0][0];\
  30                                         switch (argc_)
  31
  32 /* Handles obsolete -NUM syntax */
  33 #define ARGNUM                          case '0':\
  34                                         case '1':\
  35                                         case '2':\
  36                                         case '3':\
  37                                         case '4':\
  38                                         case '5':\
  39                                         case '6':\
  40                                         case '7':\
  41                                         case '8':\
  42                                         case '9'
  43
  44 #define ARGEND                  }\
  45                         }
  46
  47 #define ARGC()          argc_
  48
  49 #define ARGNUMF(base)   (brk_ = 1, estrtol(argv[0], (base)))
  50
  51 #define EARGF(x)        ((argv[0][1] == '\0' && argv[1] == NULL)?\
  52                                 ((x), abort(), (char *)0) :\
  53                                 (brk_ = 1, (argv[0][1] != '\0')?\
  54                                         (&argv[0][1]) :\
  55                                         (argc--, argv++, argv[0])))
  56
  57 #define ARGF()          ((argv[0][1] == '\0' && argv[1] == NULL)?\
  58                                 (char *)0 :\
  59                                 (brk_ = 1, (argv[0][1] != '\0')?\
  60                                         (&argv[0][1]) :\
  61                                         (argc--, argv++, argv[0])))
  62
  63 #endif