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2dc9b8b78e
Adding support for the "FM" format in function TO_CHAR(date_time, fmt).
"FM" in the format string disables padding of all components following it.
So now TO_CHAR() works as follows:
- By default string format components DAY (weekday name) and
MONTH (month name) are right-padded with spaces to the maximum
possible DAY and MONTH name lengths respectively,
according to the current locale specified in @@lc_time_names.
So for example, with lc_time_names='en_US' all month names are
right-padded with spaces up to 9 characters ('September' is the longest).
SET lc_time_names='en_US';
SELECT TO_CHAR('0001-02-03', 'MONTH'); -> 'February ' (padded to 9 chars)
NEW: When typed after FM, DAY and MONTH names are not right-padded
with trailing spaces any more:
SET lc_time_names='en_US';
SELECT TO_CHAR('0001-02-03', 'FMMONTH'); -> 'February' (not padded)
- By default numeric components YYYY, YYY, YY, Y, DD, H12, H24, MI, SS
are left-padded with leading digits '0' up to the maximum possible
number of digits in the component (e.g. 4 for YYYY):
SELECT TO_CHAR('0001-02-03', 'YYYY'); -> '0001' (padded to 4 chars)
NEW: When typed after FM, these numeric components are not left-padded
with leading zeros any more:
SELECT TO_CHAR('0001-02-03', 'FMYYYY'); -> '1' (not padded)
- If FM is specified multiple times in a format string,
every FM negates the previous padding state:
* an odd FM disables padding
* an even FM enables padding
Implementation details:
- Adding a helper class Date_time_format_oracle.
- Adding a helper method Date_time_format_oracle::append_lex_cstring()
- Moving the function append_val() to Date_time_format_oracle as a method.
- Moving the function make_date_time_oracle() to Date_time_format_oracle
as a method format().
- Adding helper methods month_name() and day_name() in class MY_LOCALE,
to return the corresponding components as LEX_CSTRINGs.
99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
/* Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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#ifndef SQL_LOCALE_INCLUDED
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#define SQL_LOCALE_INCLUDED
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typedef struct my_locale_errmsgs
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{
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const char *language;
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const char ***errmsgs;
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} MY_LOCALE_ERRMSGS;
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typedef struct st_typelib TYPELIB;
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class MY_LOCALE
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{
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public:
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uint number;
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const char *name;
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const char *description;
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const bool is_ascii;
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TYPELIB *month_names;
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TYPELIB *ab_month_names;
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TYPELIB *day_names;
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TYPELIB *ab_day_names;
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uint max_month_name_length;
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uint max_day_name_length;
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uint decimal_point;
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uint thousand_sep;
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const char *grouping;
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MY_LOCALE_ERRMSGS *errmsgs;
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MY_LOCALE(uint number_par,
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const char *name_par, const char *descr_par, bool is_ascii_par,
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TYPELIB *month_names_par, TYPELIB *ab_month_names_par,
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TYPELIB *day_names_par, TYPELIB *ab_day_names_par,
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uint max_month_name_length_par, uint max_day_name_length_par,
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uint decimal_point_par, uint thousand_sep_par,
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const char *grouping_par, MY_LOCALE_ERRMSGS *errmsgs_par) :
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number(number_par),
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name(name_par), description(descr_par), is_ascii(is_ascii_par),
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month_names(month_names_par), ab_month_names(ab_month_names_par),
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day_names(day_names_par), ab_day_names(ab_day_names_par),
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max_month_name_length(max_month_name_length_par),
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max_day_name_length(max_day_name_length_par),
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decimal_point(decimal_point_par),
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thousand_sep(thousand_sep_par),
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grouping(grouping_par),
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errmsgs(errmsgs_par)
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{}
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my_repertoire_t repertoire() const
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{ return is_ascii ? MY_REPERTOIRE_ASCII : MY_REPERTOIRE_EXTENDED; }
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/*
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Get a non-abbreviated month name by index
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@param month - the month index 0..11
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*/
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LEX_CSTRING month_name(uint month) const
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{
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if (month > 11)
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return Lex_cstring("##", 2);
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return Lex_cstring_strlen(month_names->type_names[month]);
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}
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/*
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Get a non-abbreviated weekday name by index
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@param weekday - the weekday index 0..6
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*/
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LEX_CSTRING day_name(uint weekday) const
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{
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if (weekday > 6)
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return Lex_cstring("##", 2);
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return Lex_cstring_strlen(day_names->type_names[weekday]);
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}
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};
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/* Exported variables */
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extern MY_LOCALE my_locale_en_US;
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extern MYSQL_PLUGIN_IMPORT MY_LOCALE *my_locales[];
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extern MY_LOCALE *my_default_lc_messages;
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extern MY_LOCALE *my_default_lc_time_names;
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/* Exported functions */
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MY_LOCALE *my_locale_by_name(const char *name);
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MY_LOCALE *my_locale_by_number(uint number);
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void cleanup_errmsgs(void);
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#endif /* SQL_LOCALE_INCLUDED */
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