parse-options.h

   1 #ifndef PARSE_OPTIONS_H
   2 #define PARSE_OPTIONS_H
   3
   4 enum parse_opt_type {
   5         OPTION_END,
   6         OPTION_GROUP,
   7         OPTION_BOOLEAN,
   8         OPTION_STRING,
   9         OPTION_INTEGER,
  10 };
  11
  12 enum parse_opt_flags {
  13         PARSE_OPT_KEEP_DASHDASH = 1,
  14 };
  15
  16 struct option {
  17         enum parse_opt_type type;
  18         int short_name;
  19         const char *long_name;
  20         void *value;
  21         const char *argh;
  22         const char *help;
  23 };
  24
  25 #define OPT_END()                   { OPTION_END }
  26 #define OPT_GROUP(h)                { OPTION_GROUP, 0, NULL, NULL, NULL, (h) }
  27 #define OPT_BOOLEAN(s, l, v, h)     { OPTION_BOOLEAN, (s), (l), (v), NULL, (h) }
  28 #define OPT_INTEGER(s, l, v, h)     { OPTION_INTEGER, (s), (l), (v), NULL, (h) }
  29 #define OPT_STRING(s, l, v, a, h)   { OPTION_STRING,  (s), (l), (v), (a), (h) }
  30
  31 /* parse_options() will filter out the processed options and leave the
  32  * non-option argments in argv[].
  33  * Returns the number of arguments left in argv[].
  34  */
  35 extern int parse_options(int argc, const char **argv,
  36                          const struct option *options,
  37                          const char * const usagestr[], int flags);
  38
  39 extern NORETURN void usage_with_options(const char * const *usagestr,
  40                                         const struct option *options);
  41
  42 #endif