Current File : //usr/include/mysql/server/my_getopt.h
/*
Copyright (c) 2002, 2013, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#ifndef _my_getopt_h
#define _my_getopt_h
#include "my_sys.h" /* loglevel */
/* my_getopt and my_default are almost always used together */
#include <my_default.h>
C_MODE_START
#define GET_NO_ARG 1
#define GET_BOOL 2
#define GET_INT 3
#define GET_UINT 4
#define GET_LONG 5
#define GET_ULONG 6
#define GET_LL 7
#define GET_ULL 8
#define GET_STR 9
#define GET_STR_ALLOC 10
#define GET_DISABLED 11
#define GET_ENUM 12
#define GET_SET 13
#define GET_DOUBLE 14
#define GET_FLAGSET 15
#define GET_BIT 16
#define GET_ASK_ADDR 128
#define GET_AUTO 64
#define GET_TYPE_MASK 63
/**
Enumeration of the my_option::arg_type attributes.
It should be noted that for historical reasons variables with the combination
arg_type=NO_ARG, my_option::var_type=GET_BOOL still accepts
arguments. This is someone counter intuitive and care should be taken
if the code is refactored.
*/
enum get_opt_arg_type { NO_ARG, OPT_ARG, REQUIRED_ARG };
struct st_typelib;
struct my_option
{
const char *name; /**< Name of the option. name=NULL
marks the end of the my_option[]
array.
*/
int id; /**< For 0<id<255 it's means one
character for a short option
(like -A), if >255 no short option
is created, but a long option still
can be identified uniquely in the
my_get_one_option() callback.
If an opton needs neither special
treatment in the my_get_one_option()
nor one-letter short equivalent
use id=0
*/
const char *comment; /**< option comment, for autom. --help.
if it's NULL the option is not
visible in --help.
*/
void *value; /**< A pointer to the variable value */
void *u_max_value; /**< The user def. max variable value */
struct st_typelib *typelib; /**< Pointer to possible values */
ulong var_type; /**< GET_BOOL, GET_ULL, etc */
enum get_opt_arg_type arg_type; /**< e.g. REQUIRED_ARG or OPT_ARG */
longlong def_value; /**< Default value */
longlong min_value; /**< Min allowed value (for numbers) */
ulonglong max_value; /**< Max allowed value (for numbers) */
longlong sub_size; /**< Unused */
long block_size; /**< Value should be a mult. of this (for numbers) */
void *app_type; /**< To be used by an application */
};
typedef my_bool (*my_get_one_option)(const struct my_option *, const char *, const char *);
/**
Used to retrieve a reference to the object (variable) that holds the value
for the given option. For example, if var_type is GET_UINT, the function
must return a pointer to a variable of type uint. A argument is stored in
the location pointed to by the returned pointer.
*/
typedef void *(*my_getopt_value)(const char *, uint, const struct my_option *,
int *);
extern char *disabled_my_option;
extern char *autoset_my_option;
extern my_bool my_getopt_print_errors;
extern my_bool my_getopt_skip_unknown;
extern my_bool my_getopt_prefix_matching;
extern my_bool my_handle_options_init_variables;
extern my_error_reporter my_getopt_error_reporter;
extern my_getopt_value my_getopt_get_addr;
extern int handle_options (int *argc, char ***argv,
const struct my_option *longopts, my_get_one_option)
__attribute__((nonnull));
extern void my_cleanup_options(const struct my_option *options);
extern void my_print_help(const struct my_option *options);
extern void my_print_variables(const struct my_option *options);
ulonglong getopt_ull_limit_value(ulonglong num, const struct my_option *optp,
my_bool *fix);
longlong getopt_ll_limit_value(longlong, const struct my_option *,
my_bool *fix);
double getopt_double_limit_value(double num, const struct my_option *optp,
my_bool *fix);
ulonglong getopt_double2ulonglong(double);
double getopt_ulonglong2double(ulonglong);
C_MODE_END
#endif /* _my_getopt_h */
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