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mikx
123
deps/mysqllite/include/my_getopt.h
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deps/mysqllite/include/my_getopt.h
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/* Copyright (C) 2002-2004 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef _my_getopt_h
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#define _my_getopt_h
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#include "my_sys.h" /* loglevel */
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C_MODE_START
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#define GET_NO_ARG 1
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#define GET_BOOL 2
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#define GET_INT 3
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#define GET_UINT 4
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#define GET_LONG 5
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#define GET_ULONG 6
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#define GET_LL 7
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#define GET_ULL 8
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#define GET_STR 9
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#define GET_STR_ALLOC 10
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#define GET_DISABLED 11
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#define GET_ENUM 12
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#define GET_SET 13
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#define GET_DOUBLE 14
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#define GET_FLAGSET 15
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#define GET_ASK_ADDR 128
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#define GET_TYPE_MASK 127
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/**
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Enumeration of the my_option::arg_type attributes.
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It should be noted that for historical reasons variables with the combination
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arg_type=NO_ARG, my_option::var_type=GET_BOOL still accepts
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arguments. This is someone counter intuitive and care should be taken
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if the code is refactored.
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*/
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enum get_opt_arg_type { NO_ARG, OPT_ARG, REQUIRED_ARG };
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struct st_typelib;
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struct my_option
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{
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const char *name; /**< Name of the option. name=NULL
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marks the end of the my_option[]
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array.
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*/
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int id; /**< For 0<id<255 it's means one
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character for a short option
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(like -A), if >255 no short option
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is created, but a long option still
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can be identified uniquely in the
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my_get_one_option() callback.
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If an opton needs neither special
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treatment in the my_get_one_option()
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nor one-letter short equivalent
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use id=0
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*/
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const char *comment; /**< option comment, for autom. --help.
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if it's NULL the option is not
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visible in --help.
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*/
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void *value; /**< A pointer to the variable value */
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void *u_max_value; /**< The user def. max variable value */
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struct st_typelib *typelib; /**< Pointer to possible values */
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ulong var_type; /**< GET_BOOL, GET_ULL, etc */
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enum get_opt_arg_type arg_type; /**< e.g. REQUIRED_ARG or OPT_ARG */
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longlong def_value; /**< Default value */
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longlong min_value; /**< Min allowed value (for numbers) */
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longlong max_value; /**< Max allowed value (for numbers) */
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longlong sub_size; /**< Unused */
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long block_size; /**< Value should be a mult. of this (for numbers) */
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void *app_type; /**< To be used by an application */
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};
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typedef my_bool (*my_get_one_option)(int, const struct my_option *, char *);
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typedef void (*my_error_reporter)(enum loglevel level, const char *format, ...);
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/**
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Used to retrieve a reference to the object (variable) that holds the value
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for the given option. For example, if var_type is GET_UINT, the function
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must return a pointer to a variable of type uint. A argument is stored in
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the location pointed to by the returned pointer.
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*/
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typedef void *(*my_getopt_value)(const char *, uint, const struct my_option *,
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int *);
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extern char *disabled_my_option;
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extern my_bool my_getopt_print_errors;
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extern my_bool my_getopt_skip_unknown;
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extern my_error_reporter my_getopt_error_reporter;
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extern int handle_options (int *argc, char ***argv,
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const struct my_option *longopts, my_get_one_option);
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extern void my_cleanup_options(const struct my_option *options);
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extern void my_print_help(const struct my_option *options);
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extern void my_print_variables(const struct my_option *options);
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extern void my_getopt_register_get_addr(my_getopt_value);
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ulonglong getopt_ull_limit_value(ulonglong num, const struct my_option *optp,
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my_bool *fix);
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longlong getopt_ll_limit_value(longlong, const struct my_option *,
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my_bool *fix);
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double getopt_double_limit_value(double num, const struct my_option *optp,
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my_bool *fix);
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my_bool getopt_compare_strings(const char *s, const char *t, uint length);
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C_MODE_END
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#endif /* _my_getopt_h */
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