mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 08:02:07 +00:00
b75f299d69
This patch adds OPT_UINTEGER_OPTARG, which is the same as OPT_UINTEGER, but also makes it possible to use the option without any value, setting the variable to a default value, d. Signed-off-by: Riccardo Mancini <rickyman7@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/c46749b3dff796729078352ff164d363457a3587.1629490974.git.rickyman7@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
248 lines
10 KiB
C
248 lines
10 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __SUBCMD_PARSE_OPTIONS_H
|
|
#define __SUBCMD_PARSE_OPTIONS_H
|
|
|
|
#include <linux/kernel.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#ifndef NORETURN
|
|
#define NORETURN __attribute__((__noreturn__))
|
|
#endif
|
|
|
|
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_ULONG,
|
|
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,
|
|
PARSE_OPT_DISABLED = 32,
|
|
PARSE_OPT_EXCLUSIVE = 64,
|
|
PARSE_OPT_NOEMPTY = 128,
|
|
PARSE_OPT_NOBUILD = 256,
|
|
PARSE_OPT_CANSKIP = 512,
|
|
};
|
|
|
|
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
|
|
* homogeneous 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 optional (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.
|
|
*
|
|
* `set`::
|
|
* whether an option was set by the user
|
|
*/
|
|
struct option {
|
|
enum parse_opt_type type;
|
|
int short_name;
|
|
const char *long_name;
|
|
void *value;
|
|
const char *argh;
|
|
const char *help;
|
|
const char *build_opt;
|
|
|
|
int flags;
|
|
parse_opt_cb *callback;
|
|
intptr_t defval;
|
|
bool *set;
|
|
void *data;
|
|
const struct option *parent;
|
|
};
|
|
|
|
#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_PARENT(p) { .type = OPTION_END, .parent = (p) }
|
|
#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_BOOLEAN_FLAG(s, l, v, h, f) { .type = OPTION_BOOLEAN, .short_name = (s), .long_name = (l), .value = check_vtype(v, bool *), .help = (h), .flags = (f) }
|
|
#define OPT_BOOLEAN_SET(s, l, v, os, h) \
|
|
{ .type = OPTION_BOOLEAN, .short_name = (s), .long_name = (l), \
|
|
.value = check_vtype(v, bool *), .help = (h), \
|
|
.set = check_vtype(os, bool *)}
|
|
#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_UINTEGER_OPTARG(s, l, v, d, h) { .type = OPTION_UINTEGER, .short_name = (s), .long_name = (l), .value = check_vtype(v, unsigned int *), .help = (h), .flags = PARSE_OPT_OPTARG, .defval = (intptr_t)(d) }
|
|
#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_ULONG(s, l, v, h) { .type = OPTION_ULONG, .short_name = (s), .long_name = (l), .value = check_vtype(v, unsigned 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 **), .argh = (a), .help = (h) }
|
|
#define OPT_STRING_OPTARG(s, l, v, a, h, d) \
|
|
{ .type = OPTION_STRING, .short_name = (s), .long_name = (l), \
|
|
.value = check_vtype(v, const char **), .argh =(a), .help = (h), \
|
|
.flags = PARSE_OPT_OPTARG, .defval = (intptr_t)(d) }
|
|
#define OPT_STRING_OPTARG_SET(s, l, v, os, a, h, d) \
|
|
{ .type = OPTION_STRING, .short_name = (s), .long_name = (l), \
|
|
.value = check_vtype(v, const char **), .argh = (a), .help = (h), \
|
|
.flags = PARSE_OPT_OPTARG, .defval = (intptr_t)(d), \
|
|
.set = check_vtype(os, bool *)}
|
|
#define OPT_STRING_NOEMPTY(s, l, v, a, h) { .type = OPTION_STRING, .short_name = (s), .long_name = (l), .value = check_vtype(v, const char **), .argh = (a), .help = (h), .flags = PARSE_OPT_NOEMPTY}
|
|
#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), .argh = (a), .help = (h), .callback = (f) }
|
|
#define OPT_CALLBACK_SET(s, l, v, os, a, h, f) \
|
|
{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), .argh = (a), .help = (h), .callback = (f), .set = check_vtype(os, bool *)}
|
|
#define OPT_CALLBACK_NOOPT(s, l, v, a, h, f) \
|
|
{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), .argh = (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), .argh = (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), .arg = (a), .help = (h), .callback = (f), .defval = (intptr_t)d,\
|
|
.flags = PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NOARG}
|
|
#define OPT_CALLBACK_OPTARG(s, l, v, d, a, h, f) \
|
|
{ .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), \
|
|
.value = (v), .argh = (a), .help = (h), .callback = (f), \
|
|
.flags = PARSE_OPT_OPTARG, .data = (d) }
|
|
|
|
/* parse_options() will filter out the processed options and leave the
|
|
* non-option argments in argv[].
|
|
* Returns the number of arguments left in argv[].
|
|
*
|
|
* NOTE: parse_options() and parse_options_subcommand() may call exit() in the
|
|
* case of an error (or for 'special' options like --list-cmds or --list-opts).
|
|
*/
|
|
extern int parse_options(int argc, const char **argv,
|
|
const struct option *options,
|
|
const char * const usagestr[], int flags);
|
|
|
|
extern int parse_options_subcommand(int argc, const char **argv,
|
|
const struct option *options,
|
|
const char *const subcommands[],
|
|
const char *usagestr[], int flags);
|
|
|
|
extern NORETURN void usage_with_options(const char * const *usagestr,
|
|
const struct option *options);
|
|
extern NORETURN __attribute__((format(printf,3,4)))
|
|
void usage_with_options_msg(const char * const *usagestr,
|
|
const struct option *options,
|
|
const char *fmt, ...);
|
|
|
|
/*----- incremantal advanced APIs -----*/
|
|
|
|
enum {
|
|
PARSE_OPT_HELP = -1,
|
|
PARSE_OPT_DONE,
|
|
PARSE_OPT_LIST_OPTS,
|
|
PARSE_OPT_LIST_SUBCMDS,
|
|
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;
|
|
const struct option *excl_opt;
|
|
int flags;
|
|
};
|
|
|
|
extern int parse_options_usage(const char * const *usagestr,
|
|
const struct option *opts,
|
|
const char *optstr,
|
|
bool short_opt);
|
|
|
|
|
|
/*----- 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);
|
|
|
|
void set_option_flag(struct option *opts, int sopt, const char *lopt, int flag);
|
|
void set_option_nobuild(struct option *opts, int shortopt, const char *longopt,
|
|
const char *build_opt, bool can_skip);
|
|
|
|
#endif /* __SUBCMD_PARSE_OPTIONS_H */
|