1605 lines
47 KiB
C++
1605 lines
47 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include "runtime/datetime_value.h"
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#include <ctype.h>
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#include <string.h>
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#include <time.h>
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#include <limits>
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#include <sstream>
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#include "common/logging.h"
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namespace doris {
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const char* DateTimeValue::_s_llvm_class_name = "class.doris::DateTimeValue";
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const uint64_t log_10_int[] = {
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1, 10, 100, 1000, 10000UL, 100000UL, 1000000UL, 10000000UL,
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100000000UL, 1000000000UL, 10000000000UL, 100000000000UL
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};
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static int s_days_in_month[13] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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static const char* s_month_name[] =
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{"", "January", "February", "March", "April", "May", "June",
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"July", "August", "September", "October", "November", "December", NULL};
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static const char* s_ab_month_name[] =
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{"", "Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec", NULL};
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static const char* s_day_name[] =
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{"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday", NULL};
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static const char* s_ab_day_name[] =
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{"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun", NULL};
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uint8_t mysql_week_mode(uint32_t mode) {
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mode &= 7;
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if (!(mode & WEEK_MONDAY_FIRST)) {
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mode ^= WEEK_FIRST_WEEKDAY;
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}
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return mode;
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}
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static bool is_leap(uint32_t year) {
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return ((year % 4) == 0) && ((year % 100 != 0) || ((year % 400) == 0 && year));
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}
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static uint32_t calc_days_in_year(uint32_t year) {
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return is_leap(year) ? 366 : 365;
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}
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DateTimeValue DateTimeValue::_s_min_datetime_value(0, TIME_DATETIME, 0, 0, 0, 0, 0, 1, 1);
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DateTimeValue DateTimeValue::_s_max_datetime_value(0, TIME_DATETIME, 23, 59, 59, 0,
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9999, 12, 31);
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// jint length_of_str(DateTimeValue& value) {
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// j if (_type == TIME_DATE) {
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// j return 10;
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// j } else {
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// j int extra_len = (_microsecond == 0) ? 0 : 7;
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// j if (_type == TIME_DATETIME) {
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// j return 19 + extra_len;
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// j } else {
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// j // TIME
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// j return 8 + extra_len + _neg
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// j + (_hour > 100) ? 1 : 0;
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// j }
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// j }
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// j}
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bool DateTimeValue::check_range() const {
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return _year > 9999 || _month > 12 || _day > 31
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|| _hour > (_type == TIME_TIME ? TIME_MAX_HOUR : 23)
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|| _minute > 59 || _second > 59 || _microsecond > 999999;
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}
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bool DateTimeValue::check_date() const {
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if (_month == 0 || _day == 0) {
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return true;
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}
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if (_day > s_days_in_month[_month]) {
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// Feb 29 in leap year is valid.
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if (_month == 2 && _day == 29 && is_leap(_year)) {
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return false;
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}
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return true;
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}
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return false;
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}
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// The interval format is that with no delimiters
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// YYYY-MM-DD HH-MM-DD.FFFFFF AM in default format
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// 0 1 2 3 4 5 6 7
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bool DateTimeValue::from_date_str(const char* date_str, int len) {
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const char* ptr = date_str;
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const char* end = date_str + len;
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// ONLY 2, 6 can follow by a sapce
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const static int allow_space_mask = 4 | 64;
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const static int MAX_DATE_PARTS = 8;
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uint32_t date_val[MAX_DATE_PARTS];
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int32_t date_len[MAX_DATE_PARTS];
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_neg = false;
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// Skip space character
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while (ptr < end && isspace(*ptr)) {
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ptr++;
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}
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if (ptr == end || !isdigit(*ptr)) {
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return false;
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}
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// Fix year length
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const char* pos = ptr;
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while (pos < end && (isdigit(*pos) || *pos == 'T')) {
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pos++;
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}
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int year_len = 4;
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int digits = pos - ptr;
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bool is_interval_format = false;
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// Compatible with MySQL. Shit!!!
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// For YYYYMMDD/YYYYMMDDHHMMSS is 4 digits years
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if (pos == end || *pos == '.') {
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if (digits == 4 || digits == 8 || digits >= 14) {
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year_len = 4;
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} else {
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year_len = 2;
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}
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is_interval_format = true;
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}
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int field_idx = 0;
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int field_len = year_len;
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while (ptr < end
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&& isdigit(*ptr) && field_idx < MAX_DATE_PARTS - 1) {
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const char* start = ptr;
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int temp_val = 0;
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bool scan_to_delim = (!is_interval_format) && (field_idx != 6);
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while (ptr < end && isdigit(*ptr) && (scan_to_delim || field_len--)) {
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temp_val = temp_val * 10 + (*ptr++ - '0');
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}
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// Imposible
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if (temp_val > 999999L) {
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return false;
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}
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date_val[field_idx] = temp_val;
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date_len[field_idx] = ptr - start;
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field_len = 2;
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if (ptr == end) {
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field_idx++;
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break;
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}
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if (field_idx == 2 && *ptr == 'T') {
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// YYYYMMDDTHHMMDD, skip 'T' and continue
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ptr++;
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field_idx++;
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continue;
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}
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// Second part
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if (field_idx == 5) {
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if (*ptr == '.') {
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ptr++;
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field_len = 6;
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} else if (isdigit(*ptr)) {
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field_idx++;
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break;
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}
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field_idx++;
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continue;
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}
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// escape separator
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while (ptr < end && (ispunct(*ptr) || isspace(*ptr))) {
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if (isspace(*ptr)) {
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if (((1 << field_idx) & allow_space_mask) == 0) {
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return false;
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}
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}
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ptr++;
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}
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field_idx++;
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}
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int num_field = field_idx;
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if (num_field <= 3) {
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_type = TIME_DATE;
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} else {
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_type = TIME_DATETIME;
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}
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if (!is_interval_format) {
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year_len = date_len[0];
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}
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for (; field_idx < MAX_DATE_PARTS; ++field_idx) {
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date_len[field_idx] = 0;
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date_val[field_idx] = 0;
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}
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_year = date_val[0];
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_month = date_val[1];
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_day = date_val[2];
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_hour = date_val[3];
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_minute = date_val[4];
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_second = date_val[5];
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_microsecond = date_val[6];
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if (_microsecond && date_len[6] < 6) {
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_microsecond *= log_10_int[6 - date_len[6]];
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}
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if (year_len == 2) {
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if (_year < YY_PART_YEAR) {
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_year += 2000;
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} else {
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_year += 1900;
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}
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}
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if (num_field < 3 || check_range()) {
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return false;
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}
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if (check_date()) {
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return false;
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}
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return true;
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}
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// [0, 101) invalid
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// [101, (YY_PART_YEAR - 1) * 10000 + 1231] for two digits year 2000 ~ 2069
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// [(YY_PART_YEAR - 1) * 10000 + 1231, YY_PART_YEAR * 10000L + 101) invalid
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// [YY_PART_YEAR * 10000L + 101, 991231] for two digits year 1970 ~1999
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// (991231, 10000101) invalid, because support 1000-01-01
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// [10000101, 99991231] for four digits year date value.
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// (99991231, 101000000) invalid, NOTE below this is datetime vaule hh:mm:ss must exist.
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// [101000000, (YY_PART_YEAR - 1)##1231235959] two digits year datetime value
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// ((YY_PART_YEAR - 1)##1231235959, YY_PART_YEAR##0101000000) invalid
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// ((YY_PART_YEAR)##1231235959, 99991231235959] two digits year datetime value 1970 ~ 1999
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// (999991231235959, ~) valid
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int64_t DateTimeValue::standardlize_timevalue(int64_t value) {
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_type = TIME_DATE;
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if (value <= 0) {
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return 0;
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}
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if (value >= 10000101000000L) {
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// 9999-99-99 99:99:99
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if (value > 99999999999999L) {
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return 0;
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}
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// between 1000-01-01 00:00:00L and 9999-99-99 99:99:99
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// all digits exist.
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_type = TIME_DATETIME;
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return value;
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}
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// 2000-01-01
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if (value < 101) {
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return 0;
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}
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// two digits year. 2000 ~ 2069
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if (value <= (YY_PART_YEAR - 1) * 10000L + 1231L) {
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return (value + 20000000L) * 1000000L;
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}
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// two digits year, invalid date
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if (value < YY_PART_YEAR * 10000L + 101) {
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return 0;
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}
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// two digits year. 1970 ~ 1999
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if (value <= 991231L) {
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return (value + 19000000L) * 1000000L;
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}
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// TODO(zhaochun): Don't allow year betwen 1000-01-01
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if (value < 10000101) {
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return 0;
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}
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// four digits years without hour.
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if (value <= 99991231L) {
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return value * 1000000L;
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}
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// below 0000-01-01
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if (value < 101000000) {
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return 0;
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}
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// below is with datetime, must have hh:mm:ss
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_type = TIME_DATETIME;
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// 2000 ~ 2069
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if (value <= (YY_PART_YEAR - 1) * 10000000000L + 1231235959L) {
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return value + 20000000000000L;
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}
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if (value < YY_PART_YEAR * 10000000000L + 101000000L) {
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return 0;
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}
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// 1970 ~ 1999
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if (value <= 991231235959L) {
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return value + 19000000000000L;
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}
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return value;
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}
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bool DateTimeValue::from_date_int64(int64_t value) {
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_neg = false;
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value = standardlize_timevalue(value);
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if (value <= 0) {
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return false;
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}
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uint64_t date = value / 1000000;
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uint64_t time = value % 1000000;
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_year = date / 10000;
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date %= 10000;
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_month = date / 100;
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_day = date % 100;
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_hour = time / 10000;
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time %= 10000;
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_minute = time / 100;
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_second = time % 100;
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_microsecond = 0;
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if (check_range() || check_date()) {
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return false;
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}
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return true;
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}
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void DateTimeValue::set_zero(int type) {
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memset(this, 0, sizeof(*this));
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_type = type;
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}
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void DateTimeValue::set_type(int type) {
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_type = type;
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}
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void DateTimeValue::set_max_time(bool neg) {
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set_zero(TIME_TIME);
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_hour = TIME_MAX_HOUR;
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_minute = TIME_MAX_MINUTE;
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_second = TIME_MAX_SECOND;
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_neg = neg;
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}
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bool DateTimeValue::from_time_int64(int64_t value) {
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_type = TIME_TIME;
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if (value > TIME_MAX_VALUE) {
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// 0001-01-01 00:00:00 to convert to a datetime
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if (value > 10000000000L) {
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if (from_date_int64(value)) {
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return true;
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}
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}
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set_max_time(false);
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return false;
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} else if (value < -1 * TIME_MAX_VALUE) {
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set_max_time(true);
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return false;
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}
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if (value < 0) {
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_neg = 1;
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value = -value;
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}
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_hour = value / 10000;
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value %= 10000;
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_minute = value / 100;
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if (_minute > TIME_MAX_MINUTE) {
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return false;
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}
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_second = value % 100;
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if (_second > TIME_MAX_SECOND) {
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return false;
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}
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return true;
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}
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char* DateTimeValue::append_date_string(char *to) const {
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uint32_t temp;
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// Year
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temp = _year / 100;
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*to++ = (char) ('0' + (temp / 10));
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*to++ = (char) ('0' + (temp % 10));
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temp = _year % 100;
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*to++ = (char) ('0' + (temp / 10));
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*to++ = (char) ('0' + (temp % 10));
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*to++ = '-';
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// Month
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*to++ = (char) ('0' + (_month / 10));
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*to++ = (char) ('0' + (_month % 10));
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*to++ = '-';
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// Day
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*to++ = (char) ('0' + (_day / 10));
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*to++ = (char) ('0' + (_day % 10));
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return to;
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}
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char* DateTimeValue::append_time_string(char *to) const {
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if (_neg) {
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*to++ = '-';
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}
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// Hour
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uint32_t temp = _hour;
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if (temp >= 100) {
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*to++ = (char) ('0' + (temp / 100));
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temp %= 100;
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}
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*to++ = (char) ('0' + (temp / 10));
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*to++ = (char) ('0' + (temp % 10));
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*to++ = ':';
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// Minute
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*to++ = (char) ('0' + (_minute / 10));
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*to++ = (char) ('0' + (_minute % 10));
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*to++ = ':';
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/* Second */
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*to++ = (char) ('0' + (_second / 10));
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*to++ = (char) ('0' + (_second % 10));
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if (_microsecond > 0) {
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*to++ = '.';
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uint32_t first = _microsecond / 10000;
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uint32_t second = (_microsecond % 10000) / 100;
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uint32_t third = _microsecond % 100;
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*to++ = (char) ('0' + first / 10);
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*to++ = (char) ('0' + first % 10);
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*to++ = (char) ('0' + second / 10);
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*to++ = (char) ('0' + second % 10);
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*to++ = (char) ('0' + third / 10);
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*to++ = (char) ('0' + third % 10);
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}
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return to;
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}
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char* DateTimeValue::to_datetime_string(char* to) const {
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to = append_date_string(to);
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*to++ = ' ';
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to = append_time_string(to);
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*to++ = '\0';
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return to;
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}
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char* DateTimeValue::to_date_string(char* to) const {
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to = append_date_string(to);
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*to++ = '\0';
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return to;
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}
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char* DateTimeValue::to_time_string(char* to) const {
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to = append_time_string(to);
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*to++ = '\0';
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return to;
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}
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char* DateTimeValue::to_string(char* to) const {
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switch (_type) {
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case TIME_TIME:
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to = to_time_string(to);
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break;
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case TIME_DATE:
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to = to_date_string(to);
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break;
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case TIME_DATETIME:
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to = to_datetime_string(to);
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break;
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default:
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*to++ = '\0';
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break;
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}
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return to;
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}
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int64_t DateTimeValue::to_datetime_int64() const {
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return (_year * 10000L + _month * 100 + _day) * 1000000L
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+ _hour * 10000 + _minute * 100 + _second;
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}
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int64_t DateTimeValue::to_date_int64() const {
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return _year * 10000 + _month * 100 + _day;
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}
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int64_t DateTimeValue::to_time_int64() const {
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int sign = _neg == 0 ? 1 : -1;
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return sign * (_hour * 10000 + _minute * 100 + _second);
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}
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int64_t DateTimeValue::to_int64() const {
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switch (_type) {
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case TIME_TIME:
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return to_time_int64();
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case TIME_DATE:
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return to_date_int64();
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case TIME_DATETIME:
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return to_datetime_int64();
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default:
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return 0;
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}
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}
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bool DateTimeValue::get_date_from_daynr(uint64_t daynr) {
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if (daynr <= 0 || daynr > DATE_MAX_DAYNR) {
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return false;
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}
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_year = daynr / 365;
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uint32_t days_befor_year = 0;
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while (daynr < (days_befor_year = calc_daynr(_year, 1, 1))) {
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_year--;
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}
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uint32_t days_of_year = daynr - days_befor_year + 1;
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int leap_day = 0;
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if (is_leap(_year)) {
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if (days_of_year > 31 + 28) {
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days_of_year--;
|
|
if (days_of_year == 31 + 28) {
|
|
leap_day = 1;
|
|
}
|
|
}
|
|
}
|
|
_month = 1;
|
|
while (days_of_year > s_days_in_month[_month]) {
|
|
days_of_year -= s_days_in_month[_month];
|
|
_month++;
|
|
}
|
|
_day = days_of_year + leap_day;
|
|
return true;
|
|
}
|
|
|
|
bool DateTimeValue::from_date_daynr(uint64_t daynr) {
|
|
_neg = false;
|
|
if (!get_date_from_daynr(daynr)) {
|
|
return false;
|
|
}
|
|
_hour = 0;
|
|
_minute = 0;
|
|
_second = 0;
|
|
_microsecond = 0;
|
|
_type = TIME_DATE;
|
|
return true;
|
|
}
|
|
|
|
// Following code is stolen from MySQL.
|
|
uint64_t DateTimeValue::calc_daynr(uint32_t year, uint32_t month, uint32_t day) {
|
|
uint64_t delsum = 0;
|
|
int y = year;
|
|
|
|
if (year == 0 && month == 0) {
|
|
return 0;
|
|
}
|
|
|
|
/* Cast to int to be able to handle month == 0 */
|
|
delsum = 365 * y + 31 * (month - 1) + day;
|
|
if (month <= 2) {
|
|
// No leap year
|
|
y--;
|
|
} else {
|
|
// This is great!!!
|
|
// 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
|
|
// 0, 0, 3, 3, 4, 4, 5, 5, 5, 6, 7, 8
|
|
delsum -= (month * 4 + 23) / 10;
|
|
}
|
|
// Every 400 year has 97 leap year, 100, 200, 300 are not leap year.
|
|
return delsum + y / 4 - y / 100 + y / 400;
|
|
}
|
|
|
|
static char* int_to_str(uint64_t val, char* to) {
|
|
char buf[64];
|
|
char* ptr = buf;
|
|
// Use do/while for 0 value
|
|
do {
|
|
*ptr++ = '0' + (val % 10);
|
|
val /= 10;
|
|
} while (val);
|
|
|
|
while (ptr > buf) {
|
|
*to++ = *--ptr;
|
|
}
|
|
|
|
return to;
|
|
}
|
|
|
|
static char* append_string(const char* from, char* to) {
|
|
while (*from) {
|
|
*to++ = *from++;
|
|
}
|
|
return to;
|
|
}
|
|
|
|
static char* append_with_prefix(const char* str, int str_len,
|
|
char prefix, int full_len, char* to) {
|
|
int len = (str_len > full_len) ? str_len : full_len;
|
|
len -= str_len;
|
|
while (len-- > 0) {
|
|
// push prefix;
|
|
*to++ = prefix;
|
|
}
|
|
while (str_len-- > 0) {
|
|
*to++ = *str++;
|
|
}
|
|
|
|
return to;
|
|
}
|
|
|
|
int DateTimeValue::compute_format_len(const char* format, int len) const {
|
|
int size = 0;
|
|
const char* ptr = format;
|
|
const char* end = format + len;
|
|
|
|
while (ptr < end) {
|
|
if (*ptr != '%' || (ptr + 1) < end) {
|
|
size++;
|
|
ptr++;
|
|
continue;
|
|
}
|
|
switch (*++ptr) {
|
|
case 'M':
|
|
case 'W':
|
|
size += 10;
|
|
break;
|
|
case 'D':
|
|
case 'Y':
|
|
case 'x':
|
|
case 'X':
|
|
size += 4;
|
|
break;
|
|
case 'a':
|
|
case 'b':
|
|
size += 10;
|
|
break;
|
|
case 'j':
|
|
size += 3;
|
|
break;
|
|
case 'u':
|
|
case 'U':
|
|
case 'v':
|
|
case 'V':
|
|
case 'y':
|
|
case 'm':
|
|
case 'd':
|
|
case 'h':
|
|
case 'i':
|
|
case 'I':
|
|
case 'l':
|
|
case 'p':
|
|
case 'S':
|
|
case 's':
|
|
case 'c':
|
|
case 'e':
|
|
size += 2;
|
|
break;
|
|
case 'k':
|
|
case 'H':
|
|
size += 7;
|
|
break;
|
|
case 'r':
|
|
size += 11;
|
|
break;
|
|
case 'T':
|
|
size += 8;
|
|
break;
|
|
case 'f':
|
|
size += 6;
|
|
break;
|
|
case 'w':
|
|
case '%':
|
|
default:
|
|
size++;
|
|
break;
|
|
}
|
|
}
|
|
return size;
|
|
}
|
|
|
|
bool DateTimeValue::to_format_string(const char* format, int len, char* to) const {
|
|
char buf[64];
|
|
char* pos = NULL;
|
|
const char* ptr = format;
|
|
const char* end = format + len;
|
|
char ch = '\0';
|
|
|
|
while (ptr < end) {
|
|
if (*ptr != '%' || (ptr + 1) == end) {
|
|
*to++ = *ptr++;
|
|
continue;
|
|
}
|
|
// Skip '%'
|
|
ptr++;
|
|
switch (ch = *ptr++) {
|
|
case 'a':
|
|
// Abbreviated weekday name
|
|
if (_type == TIME_TIME || (_year == 0 && _month == 0)) {
|
|
return false;
|
|
}
|
|
to = append_string(s_ab_day_name[weekday()], to);
|
|
break;
|
|
case 'b':
|
|
// Abbreviated month name
|
|
if (_month == 0) {
|
|
return false;
|
|
}
|
|
to = append_string(s_ab_month_name[_month], to);
|
|
break;
|
|
case 'c':
|
|
// Month, numeric (0...12)
|
|
pos = int_to_str(_month, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 1, to);
|
|
break;
|
|
case 'd':
|
|
// Day of month (00...31)
|
|
pos = int_to_str(_day, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 2, to);
|
|
break;
|
|
case 'D':
|
|
// Day of the month with English suffix (0th, 1st, ...)
|
|
pos = int_to_str(_day, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 1, to);
|
|
if (_day >= 10 && _day <= 19) {
|
|
to = append_string("th", to);
|
|
} else {
|
|
switch (_day % 10) {
|
|
case 1:
|
|
to = append_string("st", to);
|
|
break;
|
|
case 2:
|
|
to = append_string("nd", to);
|
|
break;
|
|
case 3:
|
|
to = append_string("rd", to);
|
|
break;
|
|
default:
|
|
to = append_string("th", to);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 'e':
|
|
// Day of the month, numeric (0..31)
|
|
pos = int_to_str(_day, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 1, to);
|
|
break;
|
|
case 'f':
|
|
// Microseconds (000000..999999)
|
|
pos = int_to_str(_microsecond, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 6, to);
|
|
break;
|
|
case 'h':
|
|
case 'I':
|
|
// Hour (01..12)
|
|
pos = int_to_str((_hour % 24 + 11) % 12 + 1, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 2, to);
|
|
break;
|
|
case 'H':
|
|
// Hour (00..23)
|
|
pos = int_to_str(_hour, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 2, to);
|
|
break;
|
|
case 'i':
|
|
// Minutes, numeric (00..59)
|
|
pos = int_to_str(_minute, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 2, to);
|
|
break;
|
|
case 'j':
|
|
// Day of year (001..366)
|
|
pos = int_to_str(daynr() - calc_daynr(_year, 1, 1) + 1, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 3, to);
|
|
break;
|
|
case 'k':
|
|
// Hour (0..23)
|
|
pos = int_to_str(_hour, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 1, to);
|
|
break;
|
|
case 'l':
|
|
// Hour (1..12)
|
|
pos = int_to_str((_hour % 24 + 11) % 12 + 1, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 1, to);
|
|
break;
|
|
case 'm':
|
|
// Month, numeric (00..12)
|
|
pos = int_to_str(_month, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 2, to);
|
|
break;
|
|
case 'M':
|
|
// Month name (January..December)
|
|
if (_month == 0) {
|
|
return false;
|
|
}
|
|
to = append_string(s_month_name[_month], to);
|
|
break;
|
|
case 'p':
|
|
// AM or PM
|
|
if ((_hour % 24) >= 12) {
|
|
to = append_string("PM", to);
|
|
} else {
|
|
to = append_string("AM", to);
|
|
}
|
|
break;
|
|
case 'r':
|
|
// Time, 12-hour (hh:mm:ss followed by AM or PM)
|
|
*to++ = (char) ('0' + (((_hour + 11) % 12 + 1) / 10));
|
|
*to++ = (char) ('0' + (((_hour + 11) % 12 + 1) % 10));
|
|
*to++ = ':';
|
|
// Minute
|
|
*to++ = (char) ('0' + (_minute / 10));
|
|
*to++ = (char) ('0' + (_minute % 10));
|
|
*to++ = ':';
|
|
/* Second */
|
|
*to++ = (char) ('0' + (_second / 10));
|
|
*to++ = (char) ('0' + (_second % 10));
|
|
if ((_hour % 24) >= 12) {
|
|
to = append_string(" PM", to);
|
|
} else {
|
|
to = append_string(" AM", to);
|
|
}
|
|
break;
|
|
case 's':
|
|
case 'S':
|
|
// Seconds (00..59)
|
|
pos = int_to_str(_second, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 2, to);
|
|
break;
|
|
case 'T':
|
|
// Time, 24-hour (hh:mm:ss)
|
|
*to++ = (char) ('0' + ((_hour % 24) / 10));
|
|
*to++ = (char) ('0' + ((_hour % 24) % 10));
|
|
*to++ = ':';
|
|
// Minute
|
|
*to++ = (char) ('0' + (_minute / 10));
|
|
*to++ = (char) ('0' + (_minute % 10));
|
|
*to++ = ':';
|
|
/* Second */
|
|
*to++ = (char) ('0' + (_second / 10));
|
|
*to++ = (char) ('0' + (_second % 10));
|
|
break;
|
|
case 'u':
|
|
// Week (00..53), where Monday is the first day of the week;
|
|
// WEEK() mode 1
|
|
if (_type == TIME_TIME) {
|
|
return false;
|
|
}
|
|
pos = int_to_str(week(mysql_week_mode(1)), buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 2, to);
|
|
break;
|
|
case 'U':
|
|
// Week (00..53), where Sunday is the first day of the week;
|
|
// WEEK() mode 0
|
|
if (_type == TIME_TIME) {
|
|
return false;
|
|
}
|
|
pos = int_to_str(week(mysql_week_mode(0)), buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 2, to);
|
|
break;
|
|
case 'v':
|
|
// Week (01..53), where Monday is the first day of the week;
|
|
// WEEK() mode 3; used with %x
|
|
if (_type == TIME_TIME) {
|
|
return false;
|
|
}
|
|
pos = int_to_str(week(mysql_week_mode(3)), buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 2, to);
|
|
break;
|
|
case 'V':
|
|
// Week (01..53), where Sunday is the first day of the week;
|
|
// WEEK() mode 2; used with %X
|
|
if (_type == TIME_TIME) {
|
|
return false;
|
|
}
|
|
pos = int_to_str(week(mysql_week_mode(2)), buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 2, to);
|
|
break;
|
|
case 'w':
|
|
// Day of the week (0=Sunday..6=Saturday)
|
|
if (_type == TIME_TIME || (_month == 0 && _year == 0)) {
|
|
return false;
|
|
}
|
|
pos = int_to_str(calc_weekday(daynr(), true), buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 1, to);
|
|
break;
|
|
case 'W':
|
|
// Weekday name (Sunday..Saturday)
|
|
to = append_string(s_day_name[weekday()], to);
|
|
break;
|
|
case 'x': {
|
|
// Year for the week, where Monday is the first day of the week,
|
|
// numeric, four digits; used with %v
|
|
if (_type == TIME_TIME) {
|
|
return false;
|
|
}
|
|
uint32_t year = 0;
|
|
calc_week(*this, mysql_week_mode(3), &year);
|
|
pos = int_to_str(year, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 4, to);
|
|
break;
|
|
}
|
|
case 'X': {
|
|
// Year for the week where Sunday is the first day of the week,
|
|
// numeric, four digits; used with %V
|
|
if (_type == TIME_TIME) {
|
|
return false;
|
|
}
|
|
uint32_t year = 0;
|
|
calc_week(*this, mysql_week_mode(2), &year);
|
|
pos = int_to_str(year, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 4, to);
|
|
break;
|
|
}
|
|
case 'y':
|
|
// Year, numeric (two digits)
|
|
pos = int_to_str(_year % 100, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 2, to);
|
|
break;
|
|
case 'Y':
|
|
// Year, numeric, four digits
|
|
pos = int_to_str(_year, buf);
|
|
to = append_with_prefix(buf, pos - buf, '0', 4, to);
|
|
break;
|
|
default:
|
|
*to++ = ch;
|
|
break;
|
|
}
|
|
}
|
|
*to++ = '\0';
|
|
return true;
|
|
}
|
|
|
|
uint8_t DateTimeValue::calc_week(const DateTimeValue& value, uint8_t mode, uint32_t *year) {
|
|
bool monday_first = mode & WEEK_MONDAY_FIRST;
|
|
bool week_year = mode & WEEK_YEAR;
|
|
bool first_weekday = mode & WEEK_FIRST_WEEKDAY;
|
|
uint64_t day_nr = value.daynr();
|
|
uint64_t daynr_first_day = calc_daynr(value._year, 1, 1);
|
|
uint8_t weekday_first_day = calc_weekday(daynr_first_day, !monday_first);
|
|
|
|
int days = 0;
|
|
*year = value._year;
|
|
|
|
// Check wether the first days of this year belongs to last year
|
|
if (value._month == 1 && value._day <= (7 - weekday_first_day)) {
|
|
if (!week_year
|
|
&& ((first_weekday && weekday_first_day != 0)
|
|
|| (!first_weekday && weekday_first_day > 3))) {
|
|
return 0;
|
|
}
|
|
(*year)--;
|
|
week_year = true;
|
|
daynr_first_day -= (days = calc_days_in_year(*year));
|
|
weekday_first_day = (weekday_first_day + 53 * 7 - days) % 7;
|
|
}
|
|
|
|
// How many days since first week
|
|
if ((first_weekday && weekday_first_day != 0)
|
|
|| (!first_weekday && weekday_first_day > 3)) {
|
|
// days in new year belongs to last year.
|
|
days = day_nr - (daynr_first_day + (7 - weekday_first_day));
|
|
} else {
|
|
// days in new year belongs to this year.
|
|
days = day_nr - (daynr_first_day - weekday_first_day);
|
|
}
|
|
|
|
if (week_year && days >= 52 * 7) {
|
|
weekday_first_day = (weekday_first_day + calc_days_in_year(*year)) % 7;
|
|
if ((first_weekday && weekday_first_day == 0)
|
|
|| (!first_weekday && weekday_first_day <= 3)) {
|
|
// Belong to next year.
|
|
(*year)++;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return days / 7 + 1;
|
|
}
|
|
|
|
uint8_t DateTimeValue::week(uint8_t mode) const {
|
|
uint32_t year = 0;
|
|
return calc_week(*this, mode, &year);
|
|
}
|
|
|
|
uint8_t DateTimeValue::calc_weekday(uint64_t day_nr, bool is_sunday_first_day) {
|
|
return (day_nr + 5L + (is_sunday_first_day ? 1L : 0L)) % 7;
|
|
}
|
|
|
|
// TODO(zhaochun): Think endptr is NULL
|
|
// Return true if convert to a integer success. Otherwise false.
|
|
static bool str_to_int64(const char* ptr, const char** endptr, int64_t *ret) {
|
|
const static uint64_t MAX_NEGATIVE_NUMBER = 0x8000000000000000;
|
|
const static uint64_t ULONGLONG_MAX = ~0;
|
|
const static uint64_t LFACTOR2 = 100000000000ULL;
|
|
const char* end = *endptr;
|
|
uint64_t cutoff_1 = 0;
|
|
uint64_t cutoff_2 = 0;
|
|
uint64_t cutoff_3 = 0;
|
|
// Skip space
|
|
while (ptr < end && (*ptr == ' ' || *ptr == '\t')) {
|
|
ptr++;
|
|
}
|
|
if (ptr >= end) {
|
|
return false;
|
|
}
|
|
// Sign
|
|
bool neg = false;
|
|
if (*ptr == '-') {
|
|
neg = true;
|
|
ptr++;
|
|
cutoff_1 = MAX_NEGATIVE_NUMBER / LFACTOR2;
|
|
cutoff_2 = (MAX_NEGATIVE_NUMBER % LFACTOR2) / 100;
|
|
cutoff_3 = (MAX_NEGATIVE_NUMBER % LFACTOR2) % 100;
|
|
} else {
|
|
if (*ptr == '+') {
|
|
ptr++;
|
|
}
|
|
cutoff_1 = ULONGLONG_MAX / LFACTOR2;
|
|
cutoff_2 = (ULONGLONG_MAX % LFACTOR2) / 100;
|
|
cutoff_3 = (ULONGLONG_MAX % LFACTOR2) % 100;
|
|
}
|
|
if (ptr >= end) {
|
|
return false;
|
|
}
|
|
// Skip '0'
|
|
while (ptr < end && *ptr == '0') {
|
|
ptr++;
|
|
}
|
|
const char* n_end = ptr + 9;
|
|
if (n_end > end) {
|
|
n_end = end;
|
|
}
|
|
uint64_t value_1 = 0;
|
|
while (ptr < n_end && isdigit(*ptr)) {
|
|
value_1 *= 10;
|
|
value_1 += *ptr++ - '0';
|
|
}
|
|
if (ptr == end || !isdigit(*ptr)) {
|
|
*endptr = ptr;
|
|
*ret = neg ? -value_1 : value_1;
|
|
return true;
|
|
}
|
|
// TODO
|
|
uint64_t value_2 = 0;
|
|
uint64_t value_3 = 0;
|
|
|
|
// Check overflow.
|
|
if (value_1 > cutoff_1
|
|
|| (value_1 == cutoff_1 && (value_2 > cutoff_2
|
|
|| (value_2 == cutoff_2 && value_3 > cutoff_3)))) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static int min(int a, int b) {
|
|
return a < b ? a : b;
|
|
}
|
|
|
|
static int find_in_lib(const char* lib[], const char* str, const char* end) {
|
|
int pos = 0;
|
|
int find_count = 0;
|
|
int find_pos = 0;
|
|
for (; lib[pos] != NULL; ++pos) {
|
|
const char* i = str;
|
|
const char* j = lib[pos];
|
|
while (i < end && *j) {
|
|
if (toupper(*i) != toupper(*j)) {
|
|
break;
|
|
}
|
|
++i;
|
|
++j;
|
|
}
|
|
if (i == end) {
|
|
if (*j == '\0') {
|
|
return pos;
|
|
} else {
|
|
find_count++;
|
|
find_pos = pos;
|
|
}
|
|
}
|
|
}
|
|
return find_count == 1 ? find_pos : -1;
|
|
}
|
|
|
|
static int check_word(const char* lib[], const char* str, const char* end, const char** endptr) {
|
|
const char* ptr = str;
|
|
while (ptr < end && isalpha(*ptr)) {
|
|
ptr++;
|
|
}
|
|
int pos = find_in_lib(lib, str, ptr);
|
|
if (pos >= 0) {
|
|
*endptr = ptr;
|
|
}
|
|
return pos;
|
|
}
|
|
|
|
bool DateTimeValue::from_date_format_str(
|
|
const char* format, int format_len,
|
|
const char* value, int value_len,
|
|
const char** sub_val_end) {
|
|
const char* ptr = format;
|
|
const char* end = format + format_len;
|
|
const char* val = value;
|
|
const char* val_end = value + value_len;
|
|
|
|
bool date_part_used = false;
|
|
bool time_part_used = false;
|
|
bool frac_part_used = false;
|
|
|
|
int day_part = 0;
|
|
int weekday = -1;
|
|
int yearday = -1;
|
|
int week_num = -1;
|
|
|
|
bool strict_week_number = false;
|
|
bool sunday_first = false;
|
|
bool strict_week_number_year_type = false;
|
|
int strict_week_number_year = -1;
|
|
bool usa_time = false;
|
|
while (ptr < end && val < val_end) {
|
|
// Skip space character
|
|
while (val < val_end && isspace(*val)) {
|
|
val++;
|
|
}
|
|
if (val >= val_end) {
|
|
break;
|
|
}
|
|
// Check switch
|
|
if (*ptr == '%' && ptr + 1 < end) {
|
|
const char* tmp = NULL;
|
|
int64_t int_value = 0;
|
|
ptr++;
|
|
switch (*ptr++) {
|
|
// Year
|
|
case 'y':
|
|
// Year, numeric (two digits)
|
|
tmp = val + min(2, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
int_value += int_value >= 70 ? 1900 : 2000;
|
|
_year = int_value;
|
|
val = tmp;
|
|
date_part_used = true;
|
|
break;
|
|
case 'Y':
|
|
// Year, numeric, four digits
|
|
tmp = val + min(4, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
if (tmp - val <= 2) {
|
|
int_value += int_value >= 70 ? 1900 : 2000;
|
|
}
|
|
_year = int_value;
|
|
val = tmp;
|
|
date_part_used = true;
|
|
break;
|
|
// Month
|
|
case 'm':
|
|
case 'c':
|
|
tmp = val + min(2, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
_month = int_value;
|
|
val = tmp;
|
|
date_part_used = true;
|
|
break;
|
|
case 'M':
|
|
int_value = check_word(s_month_name, val, val_end, &val);
|
|
if (int_value < 0) {
|
|
return false;
|
|
}
|
|
_month = int_value;
|
|
break;
|
|
case 'b':
|
|
int_value = check_word(s_ab_month_name, val, val_end, &val);
|
|
if (int_value < 0) {
|
|
return false;
|
|
}
|
|
_month = int_value;
|
|
break;
|
|
// Day
|
|
case 'd':
|
|
case 'e':
|
|
tmp = val + min(2, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
_day = int_value;
|
|
val = tmp;
|
|
date_part_used = true;
|
|
break;
|
|
case 'D':
|
|
tmp = val + min(2, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
_day = int_value;
|
|
val = tmp + min(2, val_end - tmp);
|
|
date_part_used = true;
|
|
break;
|
|
// Hour
|
|
case 'h':
|
|
case 'I':
|
|
case 'l':
|
|
usa_time = true;
|
|
// Fall through
|
|
case 'k':
|
|
case 'H':
|
|
tmp = val + min(2, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
_hour = int_value;
|
|
val = tmp;
|
|
time_part_used = true;
|
|
break;
|
|
// Minute
|
|
case 'i':
|
|
tmp = val + min(2, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
_minute = int_value;
|
|
val = tmp;
|
|
time_part_used = true;
|
|
break;
|
|
// Second
|
|
case 's':
|
|
case 'S':
|
|
tmp = val + min(2, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
_second = int_value;
|
|
val = tmp;
|
|
time_part_used = true;
|
|
break;
|
|
// Micro second
|
|
case 'f':
|
|
tmp = val + min(6, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
int_value *= log_10_int[6 - (tmp - val)];
|
|
_microsecond = int_value;
|
|
val = tmp;
|
|
frac_part_used = true;
|
|
break;
|
|
// AM/PM
|
|
case 'p':
|
|
if ((val_end - val) < 2 || toupper(*(val + 1)) != 'M' || !usa_time) {
|
|
return false;
|
|
}
|
|
if (toupper(*val) == 'P') {
|
|
// PM
|
|
day_part = 12;
|
|
}
|
|
time_part_used = true;
|
|
val += 2;
|
|
break;
|
|
// Weekday
|
|
case 'W':
|
|
int_value = check_word(s_day_name, val, val_end, &val);
|
|
if (int_value < 0) {
|
|
return false;
|
|
}
|
|
int_value++;
|
|
weekday = int_value;
|
|
date_part_used = true;
|
|
break;
|
|
case 'a':
|
|
int_value = check_word(s_ab_day_name, val, val_end, &val);
|
|
if (int_value < 0) {
|
|
return false;
|
|
}
|
|
int_value++;
|
|
weekday = int_value;
|
|
date_part_used = true;
|
|
break;
|
|
case 'w':
|
|
tmp = val + min(1, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
if (int_value >= 7) {
|
|
return false;
|
|
}
|
|
if (int_value == 0) {
|
|
int_value = 7;
|
|
}
|
|
weekday = int_value;
|
|
val = tmp;
|
|
date_part_used = true;
|
|
break;
|
|
case 'j':
|
|
tmp = val + min(3, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
yearday = int_value;
|
|
val = tmp;
|
|
date_part_used = true;
|
|
break;
|
|
case 'u':
|
|
case 'v':
|
|
case 'U':
|
|
case 'V':
|
|
sunday_first = (*(ptr - 1) == 'U' || *(ptr - 1) == 'V');
|
|
// Used to check if there is %x or %X
|
|
strict_week_number = (*(ptr - 1) == 'V' || *(ptr - 1) == 'v');
|
|
tmp = val + min(2, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
week_num = int_value;
|
|
if (week_num > 53 || (strict_week_number && week_num == 0)) {
|
|
return false;
|
|
}
|
|
val = tmp;
|
|
date_part_used = true;
|
|
break;
|
|
// strict week number, must be used with %V or %v
|
|
case 'x':
|
|
case 'X':
|
|
strict_week_number_year_type = (*(ptr - 1) == 'X');
|
|
tmp = val + min(4, val_end - val);
|
|
if (!str_to_int64(val, &tmp, &int_value)) {
|
|
return false;
|
|
}
|
|
strict_week_number_year = int_value;
|
|
val = tmp;
|
|
date_part_used = true;
|
|
break;
|
|
case 'r':
|
|
if (from_date_format_str("%I:%i:%S %p", 11, val, val_end - val, &tmp)) {
|
|
return false;
|
|
}
|
|
val = tmp;
|
|
time_part_used = true;
|
|
break;
|
|
case 'T':
|
|
if (from_date_format_str("%H:%i:%S", 8, val, val_end - val, &tmp)) {
|
|
return false;
|
|
}
|
|
time_part_used = true;
|
|
val = tmp;
|
|
break;
|
|
case '.':
|
|
while (val < val_end && ispunct(*val)) {
|
|
val++;
|
|
}
|
|
break;
|
|
case '@':
|
|
while (val < val_end && isalpha(*val)) {
|
|
val++;
|
|
}
|
|
break;
|
|
case '#':
|
|
while (val < val_end && isdigit(*val)) {
|
|
val++;
|
|
}
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
} else if (!isspace(*ptr)) {
|
|
if (*ptr != *val) {
|
|
return false;
|
|
}
|
|
ptr++;
|
|
val++;
|
|
} else {
|
|
ptr++;
|
|
}
|
|
}
|
|
|
|
if (usa_time) {
|
|
if (_hour > 12 || _hour < 1) {
|
|
return false;
|
|
}
|
|
_hour = (_hour % 12) + day_part;
|
|
}
|
|
if (sub_val_end) {
|
|
*sub_val_end = val;
|
|
return 0;
|
|
}
|
|
// Year day
|
|
if (yearday > 0) {
|
|
uint64_t days = calc_daynr(_year, 1, 1) + yearday - 1;
|
|
if (!get_date_from_daynr(days)) {
|
|
return false;
|
|
}
|
|
}
|
|
// weekday
|
|
if (week_num >= 0 && weekday > 0) {
|
|
// Check
|
|
if ((strict_week_number && (strict_week_number_year < 0
|
|
|| strict_week_number_year_type != sunday_first))
|
|
|| (!strict_week_number && strict_week_number_year >= 0)) {
|
|
return false;
|
|
}
|
|
uint64_t days = calc_daynr(strict_week_number ? strict_week_number_year : _year, 1, 1);
|
|
|
|
uint8_t weekday_b = calc_weekday(days, sunday_first);
|
|
|
|
if (sunday_first) {
|
|
days += ((weekday_b == 0) ? 0 : 7) - weekday_b + (week_num - 1) * 7 + weekday % 7;
|
|
} else {
|
|
days += ((weekday_b <= 3) ? 0 : 7) - weekday_b + (week_num - 1) * 7 + weekday - 1;
|
|
}
|
|
if (!get_date_from_daynr(days)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Compute timestamp type
|
|
if (frac_part_used) {
|
|
if (date_part_used) {
|
|
_type = TIME_DATETIME;
|
|
} else {
|
|
_type = TIME_TIME;
|
|
}
|
|
} else {
|
|
if (date_part_used) {
|
|
if (time_part_used) {
|
|
_type = TIME_DATETIME;
|
|
} else {
|
|
_type = TIME_DATE;
|
|
}
|
|
} else {
|
|
_type = TIME_TIME;
|
|
}
|
|
}
|
|
|
|
if (check_range() || check_date()) {
|
|
return false;
|
|
}
|
|
_neg = false;
|
|
return true;
|
|
}
|
|
|
|
bool DateTimeValue::date_add_interval(const TimeInterval& interval, TimeUnit unit) {
|
|
int sign = interval.is_neg ? -1 : 1;
|
|
switch (unit) {
|
|
case MICROSECOND:
|
|
case SECOND:
|
|
case MINUTE:
|
|
case HOUR:
|
|
case SECOND_MICROSECOND:
|
|
case MINUTE_MICROSECOND:
|
|
case MINUTE_SECOND:
|
|
case HOUR_MICROSECOND:
|
|
case HOUR_SECOND:
|
|
case HOUR_MINUTE:
|
|
case DAY_MICROSECOND:
|
|
case DAY_SECOND:
|
|
case DAY_MINUTE:
|
|
case DAY_HOUR: {
|
|
// This may change the day information
|
|
int64_t microseconds = _microsecond + sign * interval.microsecond;
|
|
int64_t extra_second = microseconds / 1000000L;
|
|
microseconds %= 1000000L;
|
|
|
|
int64_t seconds = (_day - 1) * 86400L + _hour * 3600L + _minute * 60 + _second
|
|
+ sign * (interval.day * 86400 + interval.hour * 3600
|
|
+ interval.minute * 60 + interval.second)
|
|
+ extra_second;
|
|
if (microseconds < 0) {
|
|
seconds--;
|
|
microseconds += 1000000L;
|
|
}
|
|
int64_t days = seconds / 86400;
|
|
seconds %= 86400L;
|
|
if (seconds < 0) {
|
|
seconds += 86400L;
|
|
days--;
|
|
}
|
|
_microsecond = microseconds;
|
|
_second = seconds % 60;
|
|
_minute = (seconds / 60) % 60;
|
|
_hour = seconds / 3600;
|
|
int64_t day_nr = calc_daynr(_year, _month, 1) + days;
|
|
if (!get_date_from_daynr(day_nr)) {
|
|
return false;
|
|
}
|
|
_type = TIME_DATETIME;
|
|
break;
|
|
}
|
|
case DAY:
|
|
case WEEK: {
|
|
// This only change day information, not change second information
|
|
int64_t day_nr = daynr() + interval.day * sign;
|
|
if (!get_date_from_daynr(day_nr)) {
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
case YEAR: {
|
|
// This only change year information
|
|
_year += sign * interval.year;
|
|
if (_year > 9999) {
|
|
return false;
|
|
}
|
|
if (_month == 2 && _day == 29 && !is_leap(_year)) {
|
|
_day = 28;
|
|
}
|
|
break;
|
|
}
|
|
case MONTH:
|
|
case QUARTER:
|
|
case YEAR_MONTH: {
|
|
// This will change month and year information, maybe date.
|
|
int64_t months = _year * 12 + _month - 1 + sign * (12 * interval.year + interval.month);
|
|
_year = months / 12;
|
|
if (_year > 9999) {
|
|
return false;
|
|
}
|
|
_month = (months % 12) + 1;
|
|
if (_day > s_days_in_month[_month]) {
|
|
_day = s_days_in_month[_month];
|
|
if (_month == 2 && is_leap(_year)) {
|
|
_day++;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool DateTimeValue::unix_timestamp(int64_t* timestamp, const std::string& timezone) const{
|
|
boost::local_time::time_zone_ptr local_time_zone = TimezoneDatabase::find_timezone(timezone);
|
|
if (local_time_zone == nullptr) {
|
|
return false;
|
|
}
|
|
char buf[64];
|
|
char* to = to_datetime_string(buf);
|
|
boost::posix_time::ptime pt = boost::posix_time::time_from_string(std::string(buf, to - buf -1));
|
|
|
|
boost::local_time::local_date_time lt(pt.date(), pt.time_of_day(), local_time_zone,
|
|
boost::local_time::local_date_time::NOT_DATE_TIME_ON_ERROR);
|
|
|
|
boost::posix_time::ptime utc_ptime = lt.utc_time();
|
|
boost::posix_time::ptime utc_start(boost::gregorian::date(1970, 1, 1));
|
|
boost::posix_time::time_duration dur = utc_ptime - utc_start;
|
|
*timestamp = dur.total_milliseconds() / 1000;
|
|
return true;
|
|
}
|
|
|
|
bool DateTimeValue::from_unixtime(int64_t timestamp, const std::string& timezone) {
|
|
boost::local_time::time_zone_ptr local_time_zone = TimezoneDatabase::find_timezone(timezone);
|
|
if (local_time_zone == nullptr) {
|
|
return false;
|
|
}
|
|
boost::local_time::local_date_time lt(boost::posix_time::from_time_t(timestamp), local_time_zone);
|
|
boost::posix_time::ptime local_ptime = lt.local_time();
|
|
|
|
_neg = 0;
|
|
_type = TIME_DATETIME;
|
|
_year = local_ptime.date().year();
|
|
_month = local_ptime.date().month();
|
|
_day = local_ptime.date().day();
|
|
_hour = local_ptime.time_of_day().hours();
|
|
_minute = local_ptime.time_of_day().minutes();
|
|
_second = local_ptime.time_of_day().seconds();
|
|
_microsecond = 0;
|
|
|
|
return true;
|
|
}
|
|
|
|
const char* DateTimeValue::month_name() const {
|
|
if (_month < 1 || _month > 12) {
|
|
return NULL;
|
|
}
|
|
return s_month_name[_month];
|
|
}
|
|
|
|
const char* DateTimeValue::day_name() const {
|
|
int day = weekday();
|
|
if (day < 0 || day >= 7) {
|
|
return NULL;
|
|
}
|
|
return s_day_name[day];
|
|
}
|
|
|
|
DateTimeValue DateTimeValue::local_time() {
|
|
DateTimeValue value;
|
|
value.from_unixtime(time(NULL), TimezoneDatabase::default_time_zone);
|
|
return value;
|
|
}
|
|
|
|
std::ostream& operator<<(std::ostream& os, const DateTimeValue& value) {
|
|
char buf[64];
|
|
value.to_string(buf);
|
|
return os << buf;
|
|
}
|
|
|
|
// NOTE:
|
|
// only support DATE - DATE (no support DATETIME - DATETIME)
|
|
std::size_t operator-(const DateTimeValue& v1, const DateTimeValue& v2) {
|
|
return v1.daynr() - v2.daynr();
|
|
}
|
|
|
|
std::size_t hash_value(DateTimeValue const& value) {
|
|
return HashUtil::hash(&value, sizeof(DateTimeValue), 0);
|
|
}
|
|
|
|
}
|