2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2019 Netflix, Inc
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33 #include <sys/queue.h>
34 #include <sys/linker_set.h>
37 * Regularized parsing of simple arguments built on top of getopt_long.
40 typedef enum arg_type {
51 // XXX need to change to offsetof for opts and args.
52 // we then need to allocate ctx and pass that into the cmd
53 // stuff. this will be a little tricky and we may need to expand
60 void *ptr; // XXXX change to offset of
64 // XXX TDB: subcommand vs actual argument. maybe with subcmd?
65 // XXX TBD: do we need parsing callback functions?
68 void *ptr; // XXXX change to offset of
72 typedef void (cmd_load_cb_t)(void *, void *);
74 typedef void (cmd_fn_t)(const struct cmd *nf, int argc, char *argv[]);
77 SLIST_ENTRY(cmd) link;
81 const struct opts *opts;
82 const struct args *args;
84 SLIST_HEAD(,cmd) subcmd;
88 void cmd_register(struct cmd *, struct cmd *);
89 #define CMD_COMMAND(c) \
90 static void cmd_register_##c(void) __attribute__((constructor)); \
91 static void cmd_register_##c(void) { cmd_register(NULL, &c); }
92 #define CMD_SUBCOMMAND(c,sc) \
93 static void cmd_register_##c_##sc(void) __attribute__((constructor)); \
94 static void cmd_register_##c_##sc(void) { cmd_register(&c, &sc); }
96 int arg_parse(int argc, char * const *argv, const struct cmd *f);
97 void arg_help(int argc, char * const *argv, const struct cmd *f);
99 void cmd_load_dir(const char *dir, cmd_load_cb_t *cb, void *argp);
100 int cmd_dispatch(int argc, char *argv[], const struct cmd *);