[deliverable/linux.git] / tools / perf / util / parse-options.h

#ifndef __PERF_PARSE_OPTIONS_H
#define __PERF_PARSE_OPTIONS_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_INT,
	OPTION_SET_PTR,
	/* options with arguments (usually) */
	OPTION_STRING,
	OPTION_INTEGER,
	OPTION_LONG,
	OPTION_CALLBACK,
};

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_INT,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 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 = (v), .help = (h), .defval = (b) }
#define OPT_BOOLEAN(s, l, v, h)     { .type = OPTION_BOOLEAN, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
#define OPT_INCR(s, l, v, h)        { .type = OPTION_INCR, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
#define OPT_SET_INT(s, l, v, h, i)  { .type = OPTION_SET_INT, .short_name = (s), .long_name = (l), .value = (v), .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 = (v), .help = (h) }
#define OPT_LONG(s, l, v, h)        { .type = OPTION_LONG, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
#define OPT_STRING(s, l, v, a, h)   { .type = OPTION_STRING,  .short_name = (s), .long_name = (l), .value = (v), (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 }

/* 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 */
Commit	Line	Data
8b40f521 JK	1	#ifndef __PERF_PARSE_OPTIONS_H
8b40f521 JK	2	#define __PERF_PARSE_OPTIONS_H
07800601 IM	3
	4	enum parse_opt_type {
	5	/* special types */
	6	OPTION_END,
	7	OPTION_ARGUMENT,
	8	OPTION_GROUP,
	9	/* options with no arguments */
	10	OPTION_BIT,
c0555642 IM	11	OPTION_BOOLEAN,
c0555642 IM	12	OPTION_INCR,
07800601 IM	13	OPTION_SET_INT,
	14	OPTION_SET_PTR,
	15	/* options with arguments (usually) */
	16	OPTION_STRING,
	17	OPTION_INTEGER,
e61078a0	18	OPTION_LONG,
07800601 IM	19	OPTION_CALLBACK,
	20	};
	21
	22	enum parse_opt_flags {
	23	PARSE_OPT_KEEP_DASHDASH = 1,
	24	PARSE_OPT_STOP_AT_NON_OPTION = 2,
	25	PARSE_OPT_KEEP_ARGV0 = 4,
	26	PARSE_OPT_KEEP_UNKNOWN = 8,
	27	PARSE_OPT_NO_INTERNAL_HELP = 16,
	28	};
	29
	30	enum parse_opt_option_flags {
	31	PARSE_OPT_OPTARG = 1,
	32	PARSE_OPT_NOARG = 2,
	33	PARSE_OPT_NONEG = 4,
	34	PARSE_OPT_HIDDEN = 8,
	35	PARSE_OPT_LASTARG_DEFAULT = 16,
	36	};
	37
	38	struct option;
	39	typedef int parse_opt_cb(const struct option , const char arg, int unset);
	40
	41	/*
	42	* `type`::
	43	* holds the type of the option, you must have an OPTION_END last in your
	44	* array.
	45	*
	46	* `short_name`::
	47	* the character to use as a short option name, '\0' if none.
	48	*
	49	* `long_name`::
	50	* the long option name, without the leading dashes, NULL if none.
	51	*
	52	* `value`::
	53	* stores pointers to the values to be filled.
	54	*
	55	* `argh`::
	56	* token to explain the kind of argument this option wants. Keep it
	57	* homogenous across the repository.
	58	*
	59	* `help`::
	60	* the short help associated to what the option does.
	61	* Must never be NULL (except for OPTION_END).
	62	* OPTION_GROUP uses this pointer to store the group header.
	63	*
	64	* `flags`::
	65	* mask of parse_opt_option_flags.
	66	* PARSE_OPT_OPTARG: says that the argument is optionnal (not for BOOLEANs)
	67	* PARSE_OPT_NOARG: says that this option takes no argument, for CALLBACKs
	68	* PARSE_OPT_NONEG: says that this option cannot be negated
	69	* PARSE_OPT_HIDDEN this option is skipped in the default usage, showed in
	70	* the long one.
	71	*
	72	* `callback`::
	73	* pointer to the callback to use for OPTION_CALLBACK.
	74	*
	75	* `defval`::
	76	* default value to fill (*->value) with for PARSE_OPT_OPTARG.
	77	* OPTION_{BIT,SET_INT,SET_PTR} store the {mask,integer,pointer} to put in
	78	* the value when met.
	79	* CALLBACKS can use it like they want.
	80	*/
	81	struct option {
	82	enum parse_opt_type type;
83	int short_name;
84	const char *long_name;
85	void *value;
86	const char *argh;
87	const char *help;
88
89	int flags;
90	parse_opt_cb *callback;
91	intptr_t defval;
92	};
93
f37a291c IM	94	#define OPT_END() { .type = OPTION_END }
	95	#define OPT_ARGUMENT(l, h) { .type = OPTION_ARGUMENT, .long_name = (l), .help = (h) }
	96	#define OPT_GROUP(h) { .type = OPTION_GROUP, .help = (h) }
	97	#define OPT_BIT(s, l, v, h, b) { .type = OPTION_BIT, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (b) }
	98	#define OPT_BOOLEAN(s, l, v, h) { .type = OPTION_BOOLEAN, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
c0555642	99	#define OPT_INCR(s, l, v, h) { .type = OPTION_INCR, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
f37a291c IM	100	#define OPT_SET_INT(s, l, v, h, i) { .type = OPTION_SET_INT, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (i) }
	101	#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) }
	102	#define OPT_INTEGER(s, l, v, h) { .type = OPTION_INTEGER, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
	103	#define OPT_LONG(s, l, v, h) { .type = OPTION_LONG, .short_name = (s), .long_name = (l), .value = (v), .help = (h) }
	104	#define OPT_STRING(s, l, v, a, h) { .type = OPTION_STRING, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h) }
07800601	105	#define OPT_DATE(s, l, v, h) \
f37a291c	106	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), .argh = "time", .help = (h), .callback = parse_opt_approxidate_cb }
07800601	107	#define OPT_CALLBACK(s, l, v, a, h, f) \
f37a291c	108	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f) }
a79d7db9 AV	109	#define OPT_CALLBACK_NOOPT(s, l, v, a, h, f) \
a79d7db9 AV	110	{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f), .flags = PARSE_OPT_NOARG }
5a4b1817 FW	111	#define OPT_CALLBACK_DEFAULT(s, l, v, a, h, f, d) \
5a4b1817 FW	112	{ .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 }
07800601 IM	113
	114	/* parse_options() will filter out the processed options and leave the
	115	* non-option argments in argv[].
	116	* Returns the number of arguments left in argv[].
	117	*/
	118	extern int parse_options(int argc, const char **argv,
	119	const struct option *options,
	120	const char * const usagestr[], int flags);
	121
	122	extern NORETURN void usage_with_options(const char * const *usagestr,
	123	const struct option *options);
	124
	125	/----- incremantal advanced APIs -----/
	126
	127	enum {
	128	PARSE_OPT_HELP = -1,
	129	PARSE_OPT_DONE,
	130	PARSE_OPT_UNKNOWN,
	131	};
	132
	133	/*
	134	* It's okay for the caller to consume argv/argc in the usual way.
	135	* Other fields of that structure are private to parse-options and should not
	136	* be modified in any way.
	137	*/
	138	struct parse_opt_ctx_t {
	139	const char **argv;
	140	const char **out;
	141	int argc, cpidx;
	142	const char *opt;
	143	int flags;
	144	};
	145
	146	extern int parse_options_usage(const char * const *usagestr,
	147	const struct option *opts);
	148
	149	extern void parse_options_start(struct parse_opt_ctx_t *ctx,
	150	int argc, const char **argv, int flags);
	151
	152	extern int parse_options_step(struct parse_opt_ctx_t *ctx,
	153	const struct option *options,
	154	const char * const usagestr[]);
	155
	156	extern int parse_options_end(struct parse_opt_ctx_t *ctx);
	157
	158
	159	/----- some often used options -----/
	160	extern int parse_opt_abbrev_cb(const struct option , const char , int);
	161	extern int parse_opt_approxidate_cb(const struct option , const char , int);
	162	extern int parse_opt_verbosity_cb(const struct option , const char , int);
	163
	164	#define OPT__VERBOSE(var) OPT_BOOLEAN('v', "verbose", (var), "be verbose")
	165	#define OPT__QUIET(var) OPT_BOOLEAN('q', "quiet", (var), "be quiet")
	166	#define OPT__VERBOSITY(var) \
	167	{ OPTION_CALLBACK, 'v', "verbose", (var), NULL, "be more verbose", \
	168	PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 }, \
	169	{ OPTION_CALLBACK, 'q', "quiet", (var), NULL, "be more quiet", \
	170	PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 }
	171	#define OPT__DRY_RUN(var) OPT_BOOLEAN('n', "dry-run", (var), "dry run")
	172	#define OPT__ABBREV(var) \
	173	{ OPTION_CALLBACK, 0, "abbrev", (var), "n", \
	174	"use <n> digits to display SHA-1s", \
	175	PARSE_OPT_OPTARG, &parse_opt_abbrev_cb, 0 }
	176
177	extern const char parse_options_fix_filename(const char prefix, const char *file);
178
8b40f521	179	#endif /* __PERF_PARSE_OPTIONS_H */