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authorunknown <monty@mysql.com>2003-12-17 17:35:34 +0200
committerunknown <monty@mysql.com>2003-12-17 17:35:34 +0200
commit0fb88806e44f48aba363bfda5ebedaaa3b05b975 (patch)
tree93924b5aab311e02a0f0931cf91e67cdfad04bdf /sql/time.cc
parent029e30b4aa357708bdbf924cfd78069fb19382bb (diff)
parent4bdfe0fb0107f2fb3e9cfb1c8a417e1028c67dcc (diff)
downloadmariadb-git-0fb88806e44f48aba363bfda5ebedaaa3b05b975.tar.gz
Merge with 4.0.17
BitKeeper/etc/logging_ok: auto-union Build-tools/Do-compile: Auto merged acinclude.m4: Auto merged configure.in: Auto merged dbug/dbug.c: Auto merged include/config-win.h: Auto merged include/my_base.h: Auto merged include/my_global.h: Auto merged include/my_pthread.h: Auto merged include/my_sys.h: Auto merged include/mysql.h: Auto merged include/mysql_com.h: Auto merged innobase/lock/lock0lock.c: Auto merged innobase/row/row0ins.c: Auto merged innobase/row/row0sel.c: Auto merged innobase/row/row0umod.c: Auto merged innobase/row/row0upd.c: Auto merged myisam/ft_boolean_search.c: Auto merged myisam/mi_check.c: Auto merged myisam/mi_dbug.c: Auto merged myisam/mi_open.c: Auto merged mysql-test/r/auto_increment.result: Auto merged mysql-test/r/bdb.result: Auto merged mysql-test/r/func_op.result: Auto merged Build-tools/Bootstrap: Merge with 4.0 client/mysql.cc: Merge with 4.0 client/mysqldump.c: Merge with 4.0 client/mysqltest.c: Use local version innobase/btr/btr0cur.c: Merge with 4.0 (Heikki should check if we should remove btr_cur_update_sec_rec_in_place() libmysql/libmysql.c: Merge with 4.0 libmysqld/lib_sql.cc: Merge with 4.0 myisam/mi_key.c: Merge with 4.0 myisam/mi_search.c: Merge with 4.0 mysql-test/r/binary.result: Merge with 4.0 mysql-test/r/func_group.result: Merge with 4.0 mysql-test/r/func_str.result: Merge with 4.0 mysql-test/r/func_time.result: Merge with 4.0 mysql-test/r/group_by.result: Merge with 4.0 mysql-test/r/handler.result: Merge with 4.0 mysql-test/r/innodb.result: Merge with 4.0 mysql-test/r/insert.result: Merge with 4.0 mysql-test/r/join_outer.result: Merge with 4.0 mysql-test/r/loaddata.result: Merge with 4.0 mysql-test/r/lowercase_table.result: Merge with 4.0 mysql-test/r/multi_update.result: Merge with 4.0 mysql-test/r/mysqldump.result: Merge with 4.0 mysql-test/r/query_cache.result: Merge with 4.0 mysql-test/r/rpl_max_relay_size.result: Merge with 4.0 mysql-test/r/rpl_rotate_logs.result: Merge with 4.0 mysql-test/r/rpl_trunc_binlog.result: Merge with 4.0 mysql-test/r/select_found.result: Merge with 4.0 mysql-test/r/symlink.result: Merge with 4.0 mysql-test/r/truncate.result: Merge with 4.0 mysql-test/r/type_blob.result: Merge with 4.0 mysql-test/r/type_datetime.result: Merge with 4.0 mysql-test/r/type_decimal.result: Merge with 4.0 mysql-test/r/type_enum.result: Merge with 4.0 mysql-test/r/type_timestamp.result: Merge with 4.0 mysql-test/r/union.result: Merge with 4.0 mysql-test/t/auto_increment.test: Merge with 4.0 mysql-test/t/bdb.test: Merge with 4.0 mysql-test/t/func_group.test: Merge with 4.0 mysql-test/t/func_op.test: Merge with 4.0 mysql-test/t/func_str.test: Merge with 4.0 mysql-test/t/func_time.test: Merge with 4.0 mysql-test/t/group_by.test: Merge with 4.0 mysql-test/t/handler.test: Merge with 4.0 mysql-test/t/innodb.test: Merge with 4.0 mysql-test/t/insert.test: Merge with 4.0 mysql-test/t/join_outer.test: Merge with 4.0 mysql-test/t/limit.test: Merge with 4.0 mysql-test/t/loaddata.test: Merge with 4.0 mysql-test/t/lowercase_table.test: Merge with 4.0 mysql-test/t/multi_update.test: Merge with 4.0 mysql-test/t/mysqldump.test: Merge with 4.0 mysql-test/t/query_cache.test: Merge with 4.0 mysql-test/t/rpl_log_pos.test: Merge with 4.0 mysql-test/t/rpl_max_relay_size.test: Merge with 4.0 mysql-test/t/rpl_rotate_logs.test: Merge with 4.0 mysql-test/t/rpl_trunc_binlog.test: Merge with 4.0 mysql-test/t/select_found.test: Merge with 4.0 mysql-test/t/symlink.test: Merge with 4.0 mysql-test/t/truncate.test: Merge with 4.0 mysql-test/t/type_blob.test: Merge with 4.0 mysql-test/t/type_datetime.test: Merge with 4.0 mysql-test/t/type_decimal.test: Merge with 4.0 mysql-test/t/type_enum.test: Merge with 4.0 mysql-test/t/type_timestamp.test: Merge with 4.0 mysql-test/t/union.test: Merge with 4.0 mysys/charset.c: Merge with 4.0 mysys/my_init.c: Merge with 4.0 mysys/my_symlink.c: Merge with 4.0 mysys/my_thr_init.c: Merge with 4.0 regex/reginit.c: Merge with 4.0 sql/field.cc: Change fix_datetime() to print errors sql/field.h: Merge with 4.0 sql/ha_innodb.cc: Merge with 4.0 sql/item.cc: Merge with 4.0 sql/item.h: Merge with 4.0 sql/item_cmpfunc.cc: Merge with 4.0 sql/item_func.cc: Merge with 4.0 sql/item_func.h: Merge with 4.0 sql/item_strfunc.cc: Merge with 4.0 sql/item_strfunc.h: Merge with 4.0 sql/item_sum.cc: Merge with 4.0 sql/item_sum.h: Merge with 4.0 sql/item_timefunc.cc: Merge with 4.0 sql/lex.h: Merge with 4.0 sql/log.cc: Merge with 4.0 sql/log_event.cc: Merge with 4.0 sql/log_event.h: Merge with 4.0 sql/mysql_priv.h: Merge with 4.0 sql/mysqld.cc: Merge with 4.0 sql/nt_servc.cc: Merge with 4.0 sql/opt_range.cc: Merge with 4.0 sql/records.cc: Merge with 4.0 sql/repl_failsafe.cc: Merge with 4.0 sql/slave.cc: Merge with 4.0 sql/sql_acl.cc: Merge with 4.0 sql/sql_analyse.cc: Merge with 4.0 sql/sql_base.cc: Merge with 4.0 sql/sql_cache.cc: Merge with 4.0 sql/sql_class.h: Merge with 4.0 sql/sql_db.cc: Merge with 4.0 sql/sql_delete.cc: Merge with 4.0 sql/sql_insert.cc: Merge with 4.0 sql/sql_load.cc: Merge with 4.0 sql/sql_parse.cc: Merge with 4.0 sql/sql_rename.cc: Merge with 4.0 sql/sql_select.cc: Merge with 4.0 sql/sql_show.cc: Merge with 4.0 sql/sql_table.cc: Merge with 4.0 sql/sql_update.cc: Merge with 4.0 sql/sql_yacc.yy: Merge with 4.0 sql/table.cc: Merge with 4.0 sql/table.h: Merge with 4.0 sql/time.cc: Merge with 4.0 sql/uniques.cc: Merge with 4.0 strings/ctype-tis620.c: Merge with 4.0 strings/strto.c: Merge with 4.0 support-files/mysql.server.sh: Merge with 4.0 support-files/mysql.spec.sh: Merge with 4.0
Diffstat (limited to 'sql/time.cc')
-rw-r--r--sql/time.cc72
1 files changed, 52 insertions, 20 deletions
diff --git a/sql/time.cc b/sql/time.cc
index fe22b80d59d..9a18a150c50 100644
--- a/sql/time.cc
+++ b/sql/time.cc
@@ -124,6 +124,8 @@ long my_gmt_sec(TIME *t, long *my_timezone)
tmp-=t->minute*60 + t->second; // Move to previous hour
}
*my_timezone= current_timezone;
+ if (tmp < 0 && t->year <= 1900+YY_PART_YEAR)
+ tmp= 0;
return (long) tmp;
} /* my_gmt_sec */
@@ -174,42 +176,72 @@ uint calc_days_in_year(uint year)
366 : 365;
}
-/* Calculate week. If 'with_year' is not set, then return a week 0-53, where
- 0 means that it's the last week of the previous year.
- If 'with_year' is set then the week will always be in the range 1-53 and
- the year out parameter will contain the year for the week */
-uint calc_week(TIME *l_time, bool with_year, bool sunday_first_day_of_week,
- uint *year)
+/*
+ The bits in week_format has the following meaning:
+ WEEK_MONDAY_FIRST (0) If not set Sunday is first day of week
+ If set Monday is first day of week
+ WEEK_YEAR (1) If not set Week is in range 0-53
+
+ Week 0 is returned for the the last week of the previous year (for
+ a date at start of january) In this case one can get 53 for the
+ first week of next year. This flag ensures that the week is
+ relevant for the given year. Note that this flag is only
+ releveant if WEEK_JANUARY is not set.
+
+ If set Week is in range 1-53.
+
+ In this case one may get week 53 for a date in January (when
+ the week is that last week of previous year) and week 1 for a
+ date in December.
+
+ WEEK_FIRST_WEEKDAY (2) If not set Weeks are numbered according
+ to ISO 8601:1988
+ If set The week that contains the first
+ 'first-day-of-week' is week 1.
+
+ ISO 8601:1988 means that if the week containing January 1 has
+ four or more days in the new year, then it is week 1;
+ Otherwise it is the last week of the previous year, and the
+ next week is week 1.
+*/
+
+uint calc_week(TIME *l_time, uint week_behaviour, uint *year)
{
uint days;
ulong daynr=calc_daynr(l_time->year,l_time->month,l_time->day);
ulong first_daynr=calc_daynr(l_time->year,1,1);
- uint weekday=calc_weekday(first_daynr,sunday_first_day_of_week);
+ bool monday_first= test(week_behaviour & WEEK_MONDAY_FIRST);
+ bool week_year= test(week_behaviour & WEEK_YEAR);
+ bool first_weekday= test(week_behaviour & WEEK_FIRST_WEEKDAY);
+
+ uint weekday=calc_weekday(first_daynr, !monday_first);
*year=l_time->year;
- if (l_time->month == 1 && l_time->day <= 7-weekday &&
- ((!sunday_first_day_of_week && weekday >= 4) ||
- (sunday_first_day_of_week && weekday != 0)))
+
+ if (l_time->month == 1 && l_time->day <= 7-weekday)
{
- /* Last week of the previous year */
- if (!with_year)
+ if (!week_year &&
+ (first_weekday && weekday != 0 ||
+ !first_weekday && weekday >= 4))
return 0;
- with_year=0; // Don't check the week again
+ week_year= 1;
(*year)--;
first_daynr-= (days=calc_days_in_year(*year));
weekday= (weekday + 53*7- days) % 7;
}
- if ((sunday_first_day_of_week && weekday != 0) ||
- (!sunday_first_day_of_week && weekday >= 4))
+
+ if ((first_weekday && weekday != 0) ||
+ (!first_weekday && weekday >= 4))
days= daynr - (first_daynr+ (7-weekday));
else
days= daynr - (first_daynr - weekday);
- if (with_year && days >= 52*7)
+
+ if (week_year && days >= 52*7)
{
- /* Check if we are on the first week of the next year (or week 53) */
weekday= (weekday + calc_days_in_year(*year)) % 7;
- if (weekday < 4)
- { // We are at first week on next year
+ if (!first_weekday && weekday < 4 ||
+ first_weekday && weekday == 0)
+ {
(*year)++;
return 1;
}
@@ -605,7 +637,7 @@ time_t str_to_timestamp(const char *str,uint length)
if (str_to_TIME(str,length,&l_time,0) <= TIMESTAMP_DATETIME_ERROR)
return(0);
- if (l_time.year >= TIMESTAMP_MAX_YEAR || l_time.year < 1900+YY_PART_YEAR)
+ if (l_time.year >= TIMESTAMP_MAX_YEAR || l_time.year < 1900+YY_PART_YEAR-1)
{
current_thd->cuted_fields++;
return(0);