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Diffstat (limited to 'include/my_getopt.h')
| -rw-r--r-- | include/my_getopt.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/include/my_getopt.h b/include/my_getopt.h new file mode 100644 index 00000000..ffff706e --- /dev/null +++ b/include/my_getopt.h @@ -0,0 +1,133 @@ +/* + 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 */ + |