#ifndef __PERF_PARSE_OPTIONS_H#define __PERF_PARSE_OPTIONS_H #include <linux/kernel.h>#include <stdbool.h> enum parse_opt_type {	/* special types */	OPTION_END,	OPTION_ARGUMENT,	OPTION_GROUP,	/* options with no arguments */	OPTION_BIT,	OPTION_BOOLEAN,	OPTION_INCR,	OPTION_SET_UINT,	OPTION_SET_PTR,	/* options with arguments (usually) */	OPTION_STRING,	OPTION_INTEGER,	OPTION_LONG,	OPTION_CALLBACK,	OPTION_U64,	OPTION_UINTEGER,}; enum parse_opt_flags {	PARSE_OPT_KEEP_DASHDASH = 1,	PARSE_OPT_STOP_AT_NON_OPTION = 2,	PARSE_OPT_KEEP_ARGV0 = 4,	PARSE_OPT_KEEP_UNKNOWN = 8,	PARSE_OPT_NO_INTERNAL_HELP = 16,}; enum parse_opt_option_flags {	PARSE_OPT_OPTARG  = 1,	PARSE_OPT_NOARG   = 2,	PARSE_OPT_NONEG   = 4,	PARSE_OPT_HIDDEN  = 8,	PARSE_OPT_LASTARG_DEFAULT = 16,}; struct option;typedef int parse_opt_cb(const struct option *, const char *arg, int unset); /* * `type`:: *   holds the type of the option, you must have an OPTION_END last in your *   array. * * `short_name`:: *   the character to use as a short option name, '\0' if none. * * `long_name`:: *   the long option name, without the leading dashes, NULL if none. * * `value`:: *   stores pointers to the values to be filled. * * `argh`:: *   token to explain the kind of argument this option wants. Keep it *   homogenous across the repository. * * `help`:: *   the short help associated to what the option does. *   Must never be NULL (except for OPTION_END). *   OPTION_GROUP uses this pointer to store the group header. * * `flags`:: *   mask of parse_opt_option_flags. *   PARSE_OPT_OPTARG: says that the argument is optionnal (not for BOOLEANs) *   PARSE_OPT_NOARG: says that this option takes no argument, for CALLBACKs *   PARSE_OPT_NONEG: says that this option cannot be negated *   PARSE_OPT_HIDDEN this option is skipped in the default usage, showed in *                    the long one. * * `callback`:: *   pointer to the callback to use for OPTION_CALLBACK. * * `defval`:: *   default value to fill (*->value) with for PARSE_OPT_OPTARG. *   OPTION_{BIT,SET_UINT,SET_PTR} store the {mask,integer,pointer} to put in *   the value when met. *   CALLBACKS can use it like they want. */struct option {	enum parse_opt_type type;	int short_name;	const char *long_name;	void *value;	const char *argh;	const char *help; 	int flags;	parse_opt_cb *callback;	intptr_t defval;}; #define check_vtype(v, type) ( BUILD_BUG_ON_ZERO(!__builtin_types_compatible_p(typeof(v), type)) + v ) #define OPT_END()                   { .type = OPTION_END }#define OPT_ARGUMENT(l, h)          { .type = OPTION_ARGUMENT, .long_name = (l), .help = (h) }#define OPT_GROUP(h)                { .type = OPTION_GROUP, .help = (h) }#define OPT_BIT(s, l, v, h, b)      { .type = OPTION_BIT, .short_name = (s), .long_name = (l), .value = check_vtype(v, int *), .help = (h), .defval = (b) }#define OPT_BOOLEAN(s, l, v, h)     { .type = OPTION_BOOLEAN, .short_name = (s), .long_name = (l), .value = check_vtype(v, bool *), .help = (h) }#define OPT_INCR(s, l, v, h)        { .type = OPTION_INCR, .short_name = (s), .long_name = (l), .value = check_vtype(v, int *), .help = (h) }#define OPT_SET_UINT(s, l, v, h, i)  { .type = OPTION_SET_UINT, .short_name = (s), .long_name = (l), .value = check_vtype(v, unsigned int *), .help = (h), .defval = (i) }#define OPT_SET_PTR(s, l, v, h, p)  { .type = OPTION_SET_PTR, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (p) }#define OPT_INTEGER(s, l, v, h)     { .type = OPTION_INTEGER, .short_name = (s), .long_name = (l), .value = check_vtype(v, int *), .help = (h) }#define OPT_UINTEGER(s, l, v, h)    { .type = OPTION_UINTEGER, .short_name = (s), .long_name = (l), .value = check_vtype(v, unsigned int *), .help = (h) }#define OPT_LONG(s, l, v, h)        { .type = OPTION_LONG, .short_name = (s), .long_name = (l), .value = check_vtype(v, long *), .help = (h) }#define OPT_U64(s, l, v, h)         { .type = OPTION_U64, .short_name = (s), .long_name = (l), .value = check_vtype(v, u64 *), .help = (h) }#define OPT_STRING(s, l, v, a, h)   { .type = OPTION_STRING,  .short_name = (s), .long_name = (l), .value = check_vtype(v, const char **), (a), .help = (h) }#define OPT_DATE(s, l, v, h) \	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), .argh = "time", .help = (h), .callback = parse_opt_approxidate_cb }#define OPT_CALLBACK(s, l, v, a, h, f) \	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f) }#define OPT_CALLBACK_NOOPT(s, l, v, a, h, f) \	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f), .flags = PARSE_OPT_NOARG }#define OPT_CALLBACK_DEFAULT(s, l, v, a, h, f, d) \	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f), .defval = (intptr_t)d, .flags = PARSE_OPT_LASTARG_DEFAULT }#define OPT_CALLBACK_DEFAULT_NOOPT(s, l, v, a, h, f, d) \	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l),\	.value = (v), (a), .help = (h), .callback = (f), .defval = (intptr_t)d,\	.flags = PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NOARG} /* parse_options() will filter out the processed options and leave the * non-option argments in argv[]. * Returns the number of arguments left in argv[]. */extern int parse_options(int argc, const char **argv,                         const struct option *options,                         const char * const usagestr[], int flags); extern NORETURN void usage_with_options(const char * const *usagestr,                                        const struct option *options); /*----- incremantal advanced APIs -----*/ enum {	PARSE_OPT_HELP = -1,	PARSE_OPT_DONE,	PARSE_OPT_UNKNOWN,}; /* * It's okay for the caller to consume argv/argc in the usual way. * Other fields of that structure are private to parse-options and should not * be modified in any way. */struct parse_opt_ctx_t {	const char **argv;	const char **out;	int argc, cpidx;	const char *opt;	int flags;}; extern int parse_options_usage(const char * const *usagestr,			       const struct option *opts); extern void parse_options_start(struct parse_opt_ctx_t *ctx,				int argc, const char **argv, int flags); extern int parse_options_step(struct parse_opt_ctx_t *ctx,			      const struct option *options,			      const char * const usagestr[]); extern int parse_options_end(struct parse_opt_ctx_t *ctx);  /*----- some often used options -----*/extern int parse_opt_abbrev_cb(const struct option *, const char *, int);extern int parse_opt_approxidate_cb(const struct option *, const char *, int);extern int parse_opt_verbosity_cb(const struct option *, const char *, int); #define OPT__VERBOSE(var)  OPT_BOOLEAN('v', "verbose", (var), "be verbose")#define OPT__QUIET(var)    OPT_BOOLEAN('q', "quiet",   (var), "be quiet")#define OPT__VERBOSITY(var) \	{ OPTION_CALLBACK, 'v', "verbose", (var), NULL, "be more verbose", \	  PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 }, \	{ OPTION_CALLBACK, 'q', "quiet", (var), NULL, "be more quiet", \	  PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 }#define OPT__DRY_RUN(var)  OPT_BOOLEAN('n', "dry-run", (var), "dry run")#define OPT__ABBREV(var)  \	{ OPTION_CALLBACK, 0, "abbrev", (var), "n", \	  "use <n> digits to display SHA-1s", \	  PARSE_OPT_OPTARG, &parse_opt_abbrev_cb, 0 } extern const char *parse_options_fix_filename(const char *prefix, const char *file); #endif /* __PERF_PARSE_OPTIONS_H */