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libplugin: support options.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2019-05-20 20:39:45 +09:30
committed by Christian Decker
parent 8b2a84a0c7
commit 688574b89c
3 changed files with 100 additions and 13 deletions
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29
plugins/libplugin.h
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@@ -24,6 +24,14 @@ struct plugin_command {
const jsmntok_t *params);
};
/* Create an array of these, one for each --option you support. */
struct plugin_option {
const char *name;
const char *description;
char *(*handle)(const char *str, void *arg);
void *arg;
};
/* Return this iff the param() call failed in your handler. */
struct command_result *command_param_failed(void);
@@ -88,9 +96,20 @@ struct command_result *forward_result(struct command *cmd,
const jsmntok_t *result,
void *arg);
/* The main plugin runner. */
void NORETURN plugin_main(char *argv[],
void (*init)(struct plugin_conn *rpc),
const struct plugin_command *commands,
size_t num_commands);
/* Macro to define arguments */
#define plugin_option(name, description, set, arg) \
(name), \
(description), \
typesafe_cb_preargs(char *, void *, (set), (arg), const char *), \
(arg)
/* Standard helpers */
char *u64_option(const char *arg, u64 *i);
char *charp_option(const char *arg, char **p);
/* The main plugin runner: append with 0 or more plugin_option(), then NULL. */
void NORETURN LAST_ARG_NULL plugin_main(char *argv[],
void (*init)(struct plugin_conn *rpc),
const struct plugin_command *commands,
size_t num_commands, ...);
#endif /* LIGHTNING_PLUGINS_LIBPLUGIN_H */