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/* Copyright (c) 2006, 2010, Oracle and/or its affiliates. Copyright (c) 2011, 2020, MariaDB 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 SQL_TIME_INCLUDED #define SQL_TIME_INCLUDED #include "sql_basic_types.h" #include "my_time.h" #include "mysql_time.h" /* timestamp_type */ #include "sql_error.h" /* Sql_condition */ #include "structs.h" /* INTERVAL */ typedef enum enum_mysql_timestamp_type timestamp_type; typedef struct st_date_time_format DATE_TIME_FORMAT; typedef struct st_known_date_time_format KNOWN_DATE_TIME_FORMAT; /* Flags for calc_week() function. */ #define WEEK_MONDAY_FIRST 1 #define WEEK_YEAR 2 #define WEEK_FIRST_WEEKDAY 4 ulong convert_period_to_month(ulong period); ulong convert_month_to_period(ulong month); void set_current_date(THD *thd, MYSQL_TIME *to); bool time_to_datetime(MYSQL_TIME *ltime); bool get_date_from_daynr(long daynr,uint *year, uint *month, uint *day); my_time_t TIME_to_timestamp(THD *thd, const MYSQL_TIME *t, uint *error_code); bool str_to_datetime_with_warn(THD *thd, CHARSET_INFO *cs, const char *str, size_t length, MYSQL_TIME *l_time, date_mode_t flags); bool double_to_datetime_with_warn(THD *thd, double value, MYSQL_TIME *ltime, date_mode_t fuzzydate, const TABLE_SHARE *s, const char *name); bool decimal_to_datetime_with_warn(THD *thd, const my_decimal *value, MYSQL_TIME *ltime, date_mode_t fuzzydate, const TABLE_SHARE *s, const char *name); bool int_to_datetime_with_warn(THD *thd, const Longlong_hybrid &nr, MYSQL_TIME *ltime, date_mode_t fuzzydate, const TABLE_SHARE *s, const char *name); bool time_to_datetime(THD *thd, const MYSQL_TIME *tm, MYSQL_TIME *dt); bool time_to_datetime_with_warn(THD *thd, const MYSQL_TIME *tm, MYSQL_TIME *dt, date_conv_mode_t fuzzydate); inline void datetime_to_date(MYSQL_TIME *ltime) { DBUG_ASSERT(ltime->time_type == MYSQL_TIMESTAMP_DATE || ltime->time_type == MYSQL_TIMESTAMP_DATETIME); DBUG_ASSERT(ltime->neg == 0); ltime->second_part= ltime->hour= ltime->minute= ltime->second= 0; ltime->time_type= MYSQL_TIMESTAMP_DATE; } inline void date_to_datetime(MYSQL_TIME *ltime) { DBUG_ASSERT(ltime->time_type == MYSQL_TIMESTAMP_DATE || ltime->time_type == MYSQL_TIMESTAMP_DATETIME); DBUG_ASSERT(ltime->neg == 0); ltime->time_type= MYSQL_TIMESTAMP_DATETIME; } void make_truncated_value_warning(THD *thd, Sql_condition::enum_warning_level level, const ErrConv *str_val, timestamp_type time_type, const char *db_name, const char *table_name, const char *field_name); extern DATE_TIME_FORMAT *date_time_format_make(timestamp_type format_type, const char *format_str, uint format_length); extern DATE_TIME_FORMAT *date_time_format_copy(THD *thd, DATE_TIME_FORMAT *format); const char *get_date_time_format_str(KNOWN_DATE_TIME_FORMAT *format, timestamp_type type); bool my_TIME_to_str(const MYSQL_TIME *ltime, String *str, uint dec); /* MYSQL_TIME operations */ bool date_add_interval(THD *thd, MYSQL_TIME *ltime, interval_type int_type, const INTERVAL &interval, bool push_warn= true); bool calc_time_diff(const MYSQL_TIME *l_time1, const MYSQL_TIME *l_time2, int l_sign, ulonglong *seconds_out, ulong *microseconds_out); int append_interval(String *str, interval_type int_type, const INTERVAL &interval); /** Calculate time difference between two MYSQL_TIME values and store the result as an out MYSQL_TIME value in MYSQL_TIMESTAMP_TIME format. The result can be outside of the supported TIME range. For example, calc_time_diff('2002-01-01 00:00:00', '2001-01-01 00:00:00') returns '8760:00:00'. So the caller might want to do check_time_range() or adjust_time_range_with_warn() on the result of a calc_time_diff() call. @param l_time1 - the minuend (TIME/DATE/DATETIME value) @param l_time2 - the subtrahend TIME/DATE/DATETIME value @param l_sign - +1 if absolute values are to be subtracted, or -1 if absolute values are to be added. @param[out] l_time3 - the result @param fuzzydate - flags @return true - if TIME_NO_ZERO_DATE was passed in flags and the result appeared to be '00:00:00.000000'. This is important when calc_time_diff() is called when calculating DATE_ADD(TIMEDIFF(...),...) @return false - otherwise */ bool calc_time_diff(const MYSQL_TIME *l_time1, const MYSQL_TIME *l_time2, int lsign, MYSQL_TIME *l_time3, date_mode_t fuzzydate); int my_time_compare(const MYSQL_TIME *a, const MYSQL_TIME *b); void localtime_to_TIME(MYSQL_TIME *to, struct tm *from); void calc_time_from_sec(MYSQL_TIME *to, ulong seconds, ulong microseconds); uint calc_week(const MYSQL_TIME *l_time, uint week_behaviour, uint *year); int calc_weekday(long daynr,bool sunday_first_day_of_week); bool parse_date_time_format(timestamp_type format_type, const char *format, uint format_length, DATE_TIME_FORMAT *date_time_format); /* convenience wrapper */ inline bool parse_date_time_format(timestamp_type format_type, DATE_TIME_FORMAT *date_time_format) { return parse_date_time_format(format_type, date_time_format->format.str, (uint) date_time_format->format.length, date_time_format); } extern DATE_TIME_FORMAT global_date_format; extern DATE_TIME_FORMAT global_datetime_format; extern DATE_TIME_FORMAT global_time_format; extern KNOWN_DATE_TIME_FORMAT known_date_time_formats[]; extern LEX_CSTRING interval_type_to_name[]; static inline bool non_zero_hhmmssuu(const MYSQL_TIME *ltime) { return ltime->hour || ltime->minute || ltime->second || ltime->second_part; } static inline bool non_zero_YYMMDD(const MYSQL_TIME *ltime) { return ltime->year || ltime->month || ltime->day; } static inline bool non_zero_date(const MYSQL_TIME *ltime) { return non_zero_YYMMDD(ltime) || (ltime->time_type == MYSQL_TIMESTAMP_DATETIME && non_zero_hhmmssuu(ltime)); } static inline bool check_date(const MYSQL_TIME *ltime, date_conv_mode_t flags, int *was_cut) { return check_date(ltime, non_zero_date(ltime), ulonglong(flags & TIME_MODE_FOR_XXX_TO_DATE), was_cut); } bool check_date_with_warn(THD *thd, const MYSQL_TIME *ltime, date_conv_mode_t fuzzy_date, timestamp_type ts_type); static inline bool check_date_with_warn(THD *thd, const MYSQL_TIME *ltime, date_mode_t fuzzydate, timestamp_type ts_type) { return check_date_with_warn(thd, ltime, date_conv_mode_t(fuzzydate), ts_type); } bool adjust_time_range_with_warn(THD *thd, MYSQL_TIME *ltime, uint dec); longlong pack_time(const MYSQL_TIME *my_time); void unpack_time(longlong packed, MYSQL_TIME *my_time, enum_mysql_timestamp_type ts_type); #endif /* SQL_TIME_INCLUDED */