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b6a95a8cb3
* Dropped unused codekit config * Integrated dynamic and static bindata for public * Ignore public bindata * Add a general generate make task * Integrated flexible public assets into web command * Updated vendoring, added all missiong govendor deps * Made the linter happy with the bindata and dynamic code * Moved public bindata definition to modules directory * Ignoring the new bindata path now * Updated to the new public modules import path * Updated public bindata command and drop the new prefix
1422 lines
37 KiB
Go
1422 lines
37 KiB
Go
// Copyright 2015 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package mysql
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import (
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"bytes"
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"fmt"
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"math"
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"strconv"
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"strings"
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"time"
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"unicode"
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"github.com/juju/errors"
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)
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// Portable analogs of some common call errors.
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var (
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ErrInvalidTimeFormat = errors.New("invalid time format")
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ErrInvalidYearFormat = errors.New("invalid year format")
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ErrInvalidYear = errors.New("invalid year")
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)
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// Time format without fractional seconds precision.
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const (
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DateFormat = "2006-01-02"
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TimeFormat = "2006-01-02 15:04:05"
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// TimeFSPFormat is time format with fractional seconds precision.
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TimeFSPFormat = "2006-01-02 15:04:05.000000"
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)
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const (
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// MinYear is the minimum for mysql year type.
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MinYear int16 = 1901
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// MaxYear is the maximum for mysql year type.
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MaxYear int16 = 2155
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// MinTime is the minimum for mysql time type.
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MinTime = -time.Duration(838*3600+59*60+59) * time.Second
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// MaxTime is the maximum for mysql time type.
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MaxTime = time.Duration(838*3600+59*60+59) * time.Second
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zeroDatetimeStr = "0000-00-00 00:00:00"
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zeroDateStr = "0000-00-00"
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)
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// Zero values for different types.
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var (
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// ZeroDuration is the zero value for Duration type.
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ZeroDuration = Duration{Duration: time.Duration(0), Fsp: DefaultFsp}
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// ZeroTime is the zero value for time.Time type.
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ZeroTime = time.Date(0, 0, 0, 0, 0, 0, 0, time.UTC)
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// ZeroDatetime is the zero value for datetime Time.
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ZeroDatetime = Time{
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Time: ZeroTime,
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Type: TypeDatetime,
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Fsp: DefaultFsp,
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}
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// ZeroTimestamp is the zero value for timestamp Time.
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ZeroTimestamp = Time{
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Time: ZeroTime,
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Type: TypeTimestamp,
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Fsp: DefaultFsp,
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}
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// ZeroDate is the zero value for date Time.
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ZeroDate = Time{
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Time: ZeroTime,
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Type: TypeDate,
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Fsp: DefaultFsp,
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}
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)
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var (
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// MinDatetime is the minimum for mysql datetime type.
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MinDatetime = time.Date(1000, 1, 1, 0, 0, 0, 0, time.Local)
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// MaxDatetime is the maximum for mysql datetime type.
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MaxDatetime = time.Date(9999, 12, 31, 23, 59, 59, 999999, time.Local)
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// MinTimestamp is the minimum for mysql timestamp type.
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MinTimestamp = time.Date(1970, 1, 1, 0, 0, 1, 0, time.UTC)
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// MaxTimestamp is the maximum for mysql timestamp type.
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MaxTimestamp = time.Date(2038, 1, 19, 3, 14, 7, 999999, time.UTC)
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// WeekdayNames lists names of weekdays, which are used in builtin time function `dayname`.
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WeekdayNames = []string{
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"Monday",
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"Tuesday",
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"Wednesday",
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"Thursday",
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"Friday",
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"Saturday",
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"Sunday",
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}
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)
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// Time is the struct for handling datetime, timestamp and date.
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// TODO: check if need a NewTime function to set Fsp default value?
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type Time struct {
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time.Time
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Type uint8
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// Fsp is short for Fractional Seconds Precision.
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// See http://dev.mysql.com/doc/refman/5.7/en/fractional-seconds.html
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Fsp int
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}
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// CurrentTime returns current time with type tp.
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func CurrentTime(tp uint8) Time {
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return Time{Time: time.Now(), Type: tp, Fsp: 0}
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}
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func (t Time) String() string {
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if t.IsZero() {
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if t.Type == TypeDate {
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return zeroDateStr
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}
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return zeroDatetimeStr
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}
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if t.Type == TypeDate {
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return t.Time.Format(DateFormat)
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}
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tfStr := TimeFormat
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if t.Fsp > 0 {
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tfStr = fmt.Sprintf("%s.%s", tfStr, strings.Repeat("0", t.Fsp))
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}
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return t.Time.Format(tfStr)
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}
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// IsZero returns a boolean indicating whether the time is equal to ZeroTime.
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func (t Time) IsZero() bool {
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return t.Time.Equal(ZeroTime)
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}
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// Marshal returns the binary encoding of time.
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func (t Time) Marshal() ([]byte, error) {
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var (
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b []byte
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err error
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)
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switch t.Type {
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case TypeDatetime, TypeDate:
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// We must use t's Zone not current Now Zone,
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// For EDT/EST, even we create the time with time.Local location,
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// we may still have a different zone with current Now time.
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_, offset := t.Zone()
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// For datetime and date type, we have a trick to marshal.
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// e.g, if local time is 2010-10-10T10:10:10 UTC+8
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// we will change this to 2010-10-10T10:10:10 UTC and then marshal.
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b, err = t.Time.Add(time.Duration(offset) * time.Second).UTC().MarshalBinary()
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case TypeTimestamp:
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b, err = t.Time.UTC().MarshalBinary()
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default:
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err = errors.Errorf("invalid time type %d", t.Type)
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}
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if err != nil {
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return nil, errors.Trace(err)
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}
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return b, nil
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}
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// Unmarshal decodes the binary data into Time with current local time.
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func (t *Time) Unmarshal(b []byte) error {
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return t.UnmarshalInLocation(b, time.Local)
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}
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// UnmarshalInLocation decodes the binary data
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// into Time with a specific time Location.
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func (t *Time) UnmarshalInLocation(b []byte, loc *time.Location) error {
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if err := t.Time.UnmarshalBinary(b); err != nil {
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return errors.Trace(err)
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}
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if t.IsZero() {
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return nil
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}
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if t.Type == TypeDatetime || t.Type == TypeDate {
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// e.g, for 2010-10-10T10:10:10 UTC, we will unmarshal to 2010-10-10T10:10:10 location
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_, offset := t.Time.In(loc).Zone()
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t.Time = t.Time.Add(-time.Duration(offset) * time.Second).In(loc)
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if t.Type == TypeDate {
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// for date type ,we will only use year, month and day.
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year, month, day := t.Time.Date()
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t.Time = time.Date(year, month, day, 0, 0, 0, 0, loc)
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}
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} else if t.Type == TypeTimestamp {
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t.Time = t.Time.In(loc)
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} else {
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return errors.Errorf("invalid time type %d", t.Type)
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}
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return nil
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}
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const numberFormat = "20060102150405"
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// ToNumber returns a formatted number.
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// e.g,
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// 2012-12-12T10:10:10 -> 20121212101010
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// 2012-12-12T10:10:10.123456 -> 20121212101010.123456
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func (t Time) ToNumber() Decimal {
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if t.IsZero() {
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return ZeroDecimal
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}
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tfStr := numberFormat
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if t.Fsp > 0 {
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tfStr = fmt.Sprintf("%s.%s", tfStr, strings.Repeat("0", t.Fsp))
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}
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s := t.Time.Format(tfStr)
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// We skip checking error here because time formatted string can be parsed certainly.
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d, _ := ParseDecimal(s)
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return d
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}
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// Convert converts t with type tp.
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func (t Time) Convert(tp uint8) (Time, error) {
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if t.Type == tp || t.IsZero() {
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return Time{Time: t.Time, Type: tp, Fsp: t.Fsp}, nil
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}
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switch tp {
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case TypeDatetime:
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return Time{Time: t.Time, Type: TypeDatetime, Fsp: t.Fsp}, nil
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case TypeTimestamp:
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nt := Time{Time: t.Time, Type: TypeTimestamp, Fsp: t.Fsp}
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if !checkTimestamp(nt) {
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return ZeroTimestamp, errors.Trace(ErrInvalidTimeFormat)
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}
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return nt, nil
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case TypeDate:
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year, month, day := t.Time.Date()
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return Time{Time: time.Date(year, month, day, 0, 0, 0, 0, time.Local),
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Type: TypeDate, Fsp: 0}, nil
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default:
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return Time{Time: ZeroTime, Type: tp}, errors.Errorf("invalid time type %d", tp)
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}
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}
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// ConvertToDuration converts mysql datetime, timestamp and date to mysql time type.
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// e.g,
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// 2012-12-12T10:10:10 -> 10:10:10
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// 2012-12-12 -> 0
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func (t Time) ConvertToDuration() (Duration, error) {
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if t.IsZero() {
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return ZeroDuration, nil
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}
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hour, minute, second := t.Clock()
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frac := t.Nanosecond()
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d := time.Duration(hour*3600+minute*60+second)*time.Second + time.Duration(frac)
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// TODO: check convert validation
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return Duration{Duration: time.Duration(d), Fsp: t.Fsp}, nil
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}
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// Compare returns an integer comparing the time instant t to o.
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// If t is after o, return 1, equal o, return 0, before o, return -1.
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func (t Time) Compare(o Time) int {
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if t.Time.After(o.Time) {
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return 1
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} else if t.Time.Equal(o.Time) {
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return 0
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} else {
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return -1
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}
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}
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// CompareString is like Compare,
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// but parses string to Time then compares.
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func (t Time) CompareString(str string) (int, error) {
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// use MaxFsp to parse the string
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o, err := ParseTime(str, t.Type, MaxFsp)
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if err != nil {
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return 0, errors.Trace(err)
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}
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return t.Compare(o), nil
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}
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// RoundFrac rounds fractional seconds precision with new fsp and returns a new one.
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// We will use the “round half up” rule, e.g, >= 0.5 -> 1, < 0.5 -> 0,
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// so 2011:11:11 10:10:10.888888 round 0 -> 2011:11:11 10:10:11
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// and 2011:11:11 10:10:10.111111 round 0 -> 2011:11:11 10:10:10
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func (t Time) RoundFrac(fsp int) (Time, error) {
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if t.Type == TypeDate {
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// date type has no fsp
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return t, nil
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}
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fsp, err := checkFsp(fsp)
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if err != nil {
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return t, errors.Trace(err)
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}
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if fsp == t.Fsp {
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// have same fsp
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return t, nil
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}
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nt := t.Time.Round(time.Duration(math.Pow10(9-fsp)) * time.Nanosecond)
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return Time{Time: nt, Type: t.Type, Fsp: fsp}, nil
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}
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func parseDateFormat(format string) []string {
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format = strings.TrimSpace(format)
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start := 0
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seps := []string{}
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for i := 0; i < len(format); i++ {
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// Date fromat must start and end with number.
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if i == 0 || i == len(format)-1 {
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if !unicode.IsNumber(rune(format[i])) {
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return nil
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}
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continue
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}
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// Seperator is a single none-number char.
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if !unicode.IsNumber(rune(format[i])) {
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if !unicode.IsNumber(rune(format[i-1])) {
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return nil
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}
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seps = append(seps, format[start:i])
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start = i + 1
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}
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}
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seps = append(seps, format[start:])
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return seps
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}
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func parseDatetime(str string, fsp int) (Time, error) {
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// Try to split str with delimiter.
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// TODO: only punctuation can be the delimiter for date parts or time parts.
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// But only space and T can be the delimiter between the date and time part.
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var (
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year int
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month int
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day int
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hour int
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minute int
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second int
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frac int
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fracStr string
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err error
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)
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seps := parseDateFormat(str)
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switch len(seps) {
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case 1:
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// No delimiter.
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if len(str) == 14 {
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// YYYYMMDDHHMMSS
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_, err = fmt.Sscanf(str, "%4d%2d%2d%2d%2d%2d", &year, &month, &day, &hour, &minute, &second)
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} else if len(str) == 12 {
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// YYMMDDHHMMSS
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_, err = fmt.Sscanf(str, "%2d%2d%2d%2d%2d%2d", &year, &month, &day, &hour, &minute, &second)
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year = adjustYear(year)
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} else if len(str) == 8 {
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// YYYYMMDD
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_, err = fmt.Sscanf(str, "%4d%2d%2d", &year, &month, &day)
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} else if len(str) == 6 {
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// YYMMDD
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_, err = fmt.Sscanf(str, "%2d%2d%2d", &year, &month, &day)
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year = adjustYear(year)
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} else {
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return ZeroDatetime, errors.Trace(ErrInvalidTimeFormat)
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}
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case 2:
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s := seps[0]
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fracStr = seps[1]
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if len(s) == 14 {
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// YYYYMMDDHHMMSS.fraction
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_, err = fmt.Sscanf(s, "%4d%2d%2d%2d%2d%2d", &year, &month, &day, &hour, &minute, &second)
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} else if len(s) == 12 {
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// YYMMDDHHMMSS.fraction
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_, err = fmt.Sscanf(s, "%2d%2d%2d%2d%2d%2d", &year, &month, &day, &hour, &minute, &second)
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year = adjustYear(year)
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} else {
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return ZeroDatetime, errors.Trace(ErrInvalidTimeFormat)
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}
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case 3:
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// YYYY-MM-DD
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err = scanTimeArgs(seps, &year, &month, &day)
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case 6:
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// We don't have fractional seconds part.
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// YYYY-MM-DD HH-MM-SS
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err = scanTimeArgs(seps, &year, &month, &day, &hour, &minute, &second)
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case 7:
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// We have fractional seconds part.
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// YYY-MM-DD HH-MM-SS.fraction
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err = scanTimeArgs(seps[0:len(seps)-1], &year, &month, &day, &hour, &minute, &second)
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fracStr = seps[len(seps)-1]
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default:
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return ZeroDatetime, errors.Trace(ErrInvalidTimeFormat)
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}
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if err != nil {
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return ZeroDatetime, errors.Trace(err)
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}
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// If str is sepereated by delimiters, the first one is year, and if the year is 2 digit,
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// we should adjust it.
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// TODO: ajust year is very complex, now we only consider the simplest way.
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if len(seps[0]) == 2 {
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year = adjustYear(year)
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}
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frac, err = parseFrac(fracStr, fsp)
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if err != nil {
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return ZeroDatetime, errors.Trace(err)
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}
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t, err := newTime(year, month, day, hour, minute, second, frac)
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if err != nil {
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return ZeroDatetime, errors.Trace(err)
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}
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nt := Time{
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Time: t,
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Type: TypeDatetime,
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Fsp: fsp}
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return nt, nil
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}
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func scanTimeArgs(seps []string, args ...*int) error {
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if len(seps) != len(args) {
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return errors.Trace(ErrInvalidTimeFormat)
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}
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var err error
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for i, s := range seps {
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*args[i], err = strconv.Atoi(s)
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if err != nil {
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return errors.Trace(err)
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}
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}
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return nil
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}
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// ParseYear parses a formatted string and returns a year number.
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func ParseYear(str string) (int16, error) {
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v, err := strconv.ParseInt(str, 10, 16)
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if err != nil {
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return 0, errors.Trace(err)
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}
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y := int16(v)
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if len(str) == 4 {
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// Nothing to do.
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} else if len(str) == 2 || len(str) == 1 {
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y = int16(adjustYear(int(y)))
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} else {
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return 0, errors.Trace(ErrInvalidYearFormat)
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}
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if y < MinYear || y > MaxYear {
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return 0, errors.Trace(ErrInvalidYearFormat)
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}
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return y, nil
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}
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func newTime(year int, month int, day int, hour int, minute int, second int, frac int) (time.Time, error) {
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if year == 0 && month == 0 && day == 0 && hour == 0 && minute == 0 && second == 0 {
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// Should we check fractional fractional here?
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// But go time.Time can not support zero time 0000-00-00 00:00:00.
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return ZeroTime, nil
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}
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|
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if err := checkTime(year, month, day, hour, minute, second, frac); err != nil {
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return ZeroTime, errors.Trace(err)
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}
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|
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return time.Date(year, time.Month(month), day, hour, minute, second, frac*1000, time.Local), nil
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}
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|
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// See https://dev.mysql.com/doc/refman/5.7/en/two-digit-years.html
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func adjustYear(y int) int {
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|
if y >= 0 && y <= 69 {
|
|
y = 2000 + y
|
|
} else if y >= 70 && y <= 99 {
|
|
y = 1900 + y
|
|
}
|
|
return y
|
|
}
|
|
|
|
// AdjustYear is used for adjusting year and checking its validation.
|
|
func AdjustYear(y int64) (int64, error) {
|
|
y = int64(adjustYear(int(y)))
|
|
if y < int64(MinYear) || y > int64(MaxYear) {
|
|
return 0, errors.Trace(ErrInvalidYear)
|
|
}
|
|
|
|
return y, nil
|
|
}
|
|
|
|
// Duration is the type for MySQL time type.
|
|
type Duration struct {
|
|
time.Duration
|
|
// Fsp is short for Fractional Seconds Precision.
|
|
// See http://dev.mysql.com/doc/refman/5.7/en/fractional-seconds.html
|
|
Fsp int
|
|
}
|
|
|
|
// String returns the time formatted using default TimeFormat and fsp.
|
|
func (d Duration) String() string {
|
|
var buf bytes.Buffer
|
|
|
|
sign, hours, minutes, seconds, fraction := splitDuration(d.Duration)
|
|
if sign < 0 {
|
|
buf.WriteByte('-')
|
|
}
|
|
|
|
fmt.Fprintf(&buf, "%02d:%02d:%02d", hours, minutes, seconds)
|
|
if d.Fsp > 0 {
|
|
buf.WriteString(".")
|
|
buf.WriteString(d.formatFrac(fraction))
|
|
}
|
|
|
|
p := buf.String()
|
|
|
|
return p
|
|
}
|
|
|
|
func (d Duration) formatFrac(frac int) string {
|
|
format := fmt.Sprintf("%%0%dd", d.Fsp)
|
|
s := fmt.Sprintf(format, frac)
|
|
return s[0:d.Fsp]
|
|
}
|
|
|
|
// ToNumber changes duration to number format.
|
|
// e.g,
|
|
// 10:10:10 -> 101010
|
|
func (d Duration) ToNumber() Decimal {
|
|
sign, hours, minutes, seconds, fraction := splitDuration(time.Duration(d.Duration))
|
|
var (
|
|
s string
|
|
signStr string
|
|
)
|
|
|
|
if sign < 0 {
|
|
signStr = "-"
|
|
}
|
|
|
|
if d.Fsp == 0 {
|
|
s = fmt.Sprintf("%s%02d%02d%02d", signStr, hours, minutes, seconds)
|
|
} else {
|
|
s = fmt.Sprintf("%s%02d%02d%02d.%s", signStr, hours, minutes, seconds, d.formatFrac(fraction))
|
|
}
|
|
|
|
// We skip checking error here because time formatted string can be parsed certainly.
|
|
v, _ := ParseDecimal(s)
|
|
return v
|
|
}
|
|
|
|
// ConvertToTime converts duration to Time.
|
|
// Tp is TypeDatetime, TypeTimestamp and TypeDate.
|
|
func (d Duration) ConvertToTime(tp uint8) (Time, error) {
|
|
year, month, day := time.Now().Date()
|
|
// just use current year, month and day.
|
|
n := time.Date(year, month, day, 0, 0, 0, 0, time.Local)
|
|
n = n.Add(d.Duration)
|
|
|
|
t := Time{
|
|
Time: n,
|
|
Type: TypeDatetime,
|
|
Fsp: d.Fsp,
|
|
}
|
|
|
|
return t.Convert(tp)
|
|
}
|
|
|
|
// RoundFrac rounds fractional seconds precision with new fsp and returns a new one.
|
|
// We will use the “round half up” rule, e.g, >= 0.5 -> 1, < 0.5 -> 0,
|
|
// so 10:10:10.999999 round 0 -> 10:10:11
|
|
// and 10:10:10.000000 round 0 -> 10:10:10
|
|
func (d Duration) RoundFrac(fsp int) (Duration, error) {
|
|
fsp, err := checkFsp(fsp)
|
|
if err != nil {
|
|
return d, errors.Trace(err)
|
|
}
|
|
|
|
if fsp == d.Fsp {
|
|
return d, nil
|
|
}
|
|
|
|
n := ZeroTime
|
|
nd := n.Add(d.Duration).Round(time.Duration(math.Pow10(9-fsp)) * time.Nanosecond).Sub(n)
|
|
return Duration{Duration: nd, Fsp: fsp}, nil
|
|
}
|
|
|
|
// Compare returns an integer comparing the Duration instant t to o.
|
|
// If d is after o, return 1, equal o, return 0, before o, return -1.
|
|
func (d Duration) Compare(o Duration) int {
|
|
if d.Duration > o.Duration {
|
|
return 1
|
|
} else if d.Duration == o.Duration {
|
|
return 0
|
|
} else {
|
|
return -1
|
|
}
|
|
}
|
|
|
|
// CompareString is like Compare,
|
|
// but parses str to Duration then compares.
|
|
func (d Duration) CompareString(str string) (int, error) {
|
|
// use MaxFsp to parse the string
|
|
o, err := ParseDuration(str, MaxFsp)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
return d.Compare(o), nil
|
|
}
|
|
|
|
// Hour returns current hour.
|
|
// e.g, hour("11:11:11") -> 11
|
|
func (d Duration) Hour() int {
|
|
_, hour, _, _, _ := splitDuration(d.Duration)
|
|
return hour
|
|
}
|
|
|
|
// Minute returns current minute.
|
|
// e.g, hour("11:11:11") -> 11
|
|
func (d Duration) Minute() int {
|
|
_, _, minute, _, _ := splitDuration(d.Duration)
|
|
return minute
|
|
}
|
|
|
|
// Second returns current second.
|
|
// e.g, hour("11:11:11") -> 11
|
|
func (d Duration) Second() int {
|
|
_, _, _, second, _ := splitDuration(d.Duration)
|
|
return second
|
|
}
|
|
|
|
// MicroSecond returns current microsecond.
|
|
// e.g, hour("11:11:11.11") -> 110000
|
|
func (d Duration) MicroSecond() int {
|
|
_, _, _, _, frac := splitDuration(d.Duration)
|
|
return frac
|
|
}
|
|
|
|
// ParseDuration parses the time form a formatted string with a fractional seconds part,
|
|
// returns the duration type Time value.
|
|
// See: http://dev.mysql.com/doc/refman/5.7/en/fractional-seconds.html
|
|
func ParseDuration(str string, fsp int) (Duration, error) {
|
|
var (
|
|
day int
|
|
hour int
|
|
minute int
|
|
second int
|
|
frac int
|
|
|
|
err error
|
|
sign = 0
|
|
dayExists = false
|
|
)
|
|
|
|
fsp, err = checkFsp(fsp)
|
|
if err != nil {
|
|
return ZeroDuration, errors.Trace(err)
|
|
}
|
|
|
|
if len(str) == 0 {
|
|
return ZeroDuration, nil
|
|
} else if str[0] == '-' {
|
|
str = str[1:]
|
|
sign = -1
|
|
}
|
|
|
|
// Time format may has day.
|
|
if n := strings.IndexByte(str, ' '); n >= 0 {
|
|
if day, err = strconv.Atoi(str[:n]); err == nil {
|
|
dayExists = true
|
|
}
|
|
str = str[n+1:]
|
|
}
|
|
|
|
if n := strings.IndexByte(str, '.'); n >= 0 {
|
|
// It has fractional precesion parts.
|
|
fracStr := str[n+1:]
|
|
frac, err = parseFrac(fracStr, fsp)
|
|
if err != nil {
|
|
return ZeroDuration, errors.Trace(err)
|
|
}
|
|
str = str[0:n]
|
|
}
|
|
|
|
// It tries to split str with delimiter, time delimiter must be :
|
|
seps := strings.Split(str, ":")
|
|
|
|
switch len(seps) {
|
|
case 1:
|
|
if dayExists {
|
|
hour, err = strconv.Atoi(seps[0])
|
|
} else {
|
|
// No delimiter.
|
|
if len(str) == 6 {
|
|
// HHMMSS
|
|
_, err = fmt.Sscanf(str, "%2d%2d%2d", &hour, &minute, &second)
|
|
} else if len(str) == 4 {
|
|
// MMSS
|
|
_, err = fmt.Sscanf(str, "%2d%2d", &minute, &second)
|
|
} else if len(str) == 2 {
|
|
// SS
|
|
_, err = fmt.Sscanf(str, "%2d", &second)
|
|
} else {
|
|
// Maybe only contains date.
|
|
_, err = ParseDate(str)
|
|
if err == nil {
|
|
return ZeroDuration, nil
|
|
}
|
|
return ZeroDuration, errors.Trace(ErrInvalidTimeFormat)
|
|
}
|
|
}
|
|
case 2:
|
|
// HH:MM
|
|
_, err = fmt.Sscanf(str, "%2d:%2d", &hour, &minute)
|
|
case 3:
|
|
// Time format maybe HH:MM:SS or HHH:MM:SS.
|
|
// See: https://dev.mysql.com/doc/refman/5.7/en/time.html
|
|
if !dayExists && len(seps[0]) == 3 {
|
|
_, err = fmt.Sscanf(str, "%3d:%2d:%2d", &hour, &minute, &second)
|
|
} else {
|
|
_, err = fmt.Sscanf(str, "%2d:%2d:%2d", &hour, &minute, &second)
|
|
}
|
|
default:
|
|
return ZeroDuration, errors.Trace(ErrInvalidTimeFormat)
|
|
}
|
|
|
|
if err != nil {
|
|
return ZeroDuration, errors.Trace(err)
|
|
}
|
|
|
|
d := time.Duration(day*24*3600+hour*3600+minute*60+second)*time.Second + time.Duration(frac)*time.Microsecond
|
|
if sign == -1 {
|
|
d = -d
|
|
}
|
|
|
|
if d > MaxTime {
|
|
d = MaxTime
|
|
err = ErrInvalidTimeFormat
|
|
} else if d < MinTime {
|
|
d = MinTime
|
|
err = ErrInvalidTimeFormat
|
|
}
|
|
return Duration{Duration: d, Fsp: fsp}, errors.Trace(err)
|
|
}
|
|
|
|
func splitDuration(t time.Duration) (int, int, int, int, int) {
|
|
sign := 1
|
|
if t < 0 {
|
|
t = -t
|
|
sign = -1
|
|
}
|
|
|
|
hours := t / time.Hour
|
|
t -= hours * time.Hour
|
|
minutes := t / time.Minute
|
|
t -= minutes * time.Minute
|
|
seconds := t / time.Second
|
|
t -= seconds * time.Second
|
|
fraction := t / time.Microsecond
|
|
|
|
return sign, int(hours), int(minutes), int(seconds), int(fraction)
|
|
}
|
|
|
|
func checkTime(year int, month int, day int, hour int, minute int, second int, frac int) error {
|
|
// Notes: for datetime type, `insert t values("0001-01-01 00:00:00");` is valid
|
|
// so here only check year from 0~9999.
|
|
if (year < 0 || year > 9999) ||
|
|
(month <= 0 || month > 12) ||
|
|
(day <= 0 || day > 31) ||
|
|
(hour < 0 || hour >= 24) ||
|
|
(minute < 0 || minute >= 60) ||
|
|
(second < 0 || second >= 60) ||
|
|
(frac < 0) {
|
|
return errors.Trace(ErrInvalidTimeFormat)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func getTime(num int64, tp byte) (Time, error) {
|
|
s1 := num / 1000000
|
|
s2 := num - s1*1000000
|
|
|
|
year := int(s1 / 10000)
|
|
s1 %= 10000
|
|
month := int(s1 / 100)
|
|
day := int(s1 % 100)
|
|
|
|
hour := int(s2 / 10000)
|
|
s2 %= 10000
|
|
minute := int(s2 / 100)
|
|
second := int(s2 % 100)
|
|
|
|
if err := checkTime(year, month, day, hour, minute, second, 0); err != nil {
|
|
return Time{
|
|
Time: ZeroTime,
|
|
Type: tp,
|
|
Fsp: DefaultFsp,
|
|
}, err
|
|
}
|
|
|
|
t, err := newTime(year, month, day, hour, minute, second, 0)
|
|
return Time{
|
|
Time: t,
|
|
Type: tp,
|
|
Fsp: DefaultFsp,
|
|
}, errors.Trace(err)
|
|
}
|
|
|
|
// See number_to_datetime function.
|
|
// https://github.com/mysql/mysql-server/blob/5.7/sql-common/my_time.c
|
|
func parseDateTimeFromNum(num int64) (Time, error) {
|
|
t := ZeroDate
|
|
// Check zero.
|
|
if num == 0 {
|
|
return t, nil
|
|
}
|
|
|
|
// Check datetime type.
|
|
if num >= 10000101000000 {
|
|
return getTime(num, t.Type)
|
|
}
|
|
|
|
// Check MMDD.
|
|
if num < 101 {
|
|
return t, errors.Trace(ErrInvalidTimeFormat)
|
|
}
|
|
|
|
// Adjust year
|
|
// YYMMDD, year: 2000-2069
|
|
if num <= (70-1)*10000+1231 {
|
|
num = (num + 20000000) * 1000000
|
|
return getTime(num, t.Type)
|
|
}
|
|
|
|
// Check YYMMDD.
|
|
if num < 70*10000+101 {
|
|
return t, errors.Trace(ErrInvalidTimeFormat)
|
|
}
|
|
|
|
// Adjust year
|
|
// YYMMDD, year: 1970-1999
|
|
if num < 991231 {
|
|
num = (num + 19000000) * 1000000
|
|
return getTime(num, t.Type)
|
|
}
|
|
|
|
// Check YYYYMMDD.
|
|
if num < 10000101 {
|
|
return t, errors.Trace(ErrInvalidTimeFormat)
|
|
}
|
|
|
|
// Adjust hour/min/second.
|
|
if num < 99991231 {
|
|
num = num * 1000000
|
|
return getTime(num, t.Type)
|
|
}
|
|
|
|
// Check MMDDHHMMSS.
|
|
if num < 101000000 {
|
|
return t, errors.Trace(ErrInvalidTimeFormat)
|
|
}
|
|
|
|
// Set TypeDatetime type.
|
|
t.Type = TypeDatetime
|
|
|
|
// Adjust year
|
|
// YYMMDDHHMMSS, 2000-2069
|
|
if num <= 69*10000000000+1231235959 {
|
|
num = num + 20000000000000
|
|
return getTime(num, t.Type)
|
|
}
|
|
|
|
// Check YYYYMMDDHHMMSS.
|
|
if num < 70*10000000000+101000000 {
|
|
return t, errors.Trace(ErrInvalidTimeFormat)
|
|
}
|
|
|
|
// Adjust year
|
|
// YYMMDDHHMMSS, 1970-1999
|
|
if num <= 991231235959 {
|
|
num = num + 19000000000000
|
|
return getTime(num, t.Type)
|
|
}
|
|
|
|
return getTime(num, t.Type)
|
|
}
|
|
|
|
// ParseTime parses a formatted string with type tp and specific fsp.
|
|
// Type is TypeDatetime, TypeTimestamp and TypeDate.
|
|
// Fsp is in range [0, 6].
|
|
// MySQL supports many valid datatime format, but still has some limitation.
|
|
// If delimiter exists, the date part and time part is seperated by a space or T,
|
|
// other punctuation character can be used as the delimiter between date parts or time parts.
|
|
// If no delimiter, the format must be YYYYMMDDHHMMSS or YYMMDDHHMMSS
|
|
// If we have fractional seconds part, we must use decimal points as the delimiter.
|
|
// The valid datetime range is from '1000-01-01 00:00:00.000000' to '9999-12-31 23:59:59.999999'.
|
|
// The valid timestamp range is from '1970-01-01 00:00:01.000000' to '2038-01-19 03:14:07.999999'.
|
|
// The valid date range is from '1000-01-01' to '9999-12-31'
|
|
func ParseTime(str string, tp byte, fsp int) (Time, error) {
|
|
fsp, err := checkFsp(fsp)
|
|
if err != nil {
|
|
return Time{Time: ZeroTime, Type: tp}, errors.Trace(err)
|
|
}
|
|
|
|
t, err := parseDatetime(str, fsp)
|
|
if err != nil {
|
|
return Time{Time: ZeroTime, Type: tp}, errors.Trace(err)
|
|
}
|
|
|
|
return t.Convert(tp)
|
|
}
|
|
|
|
// ParseDatetime is a helper function wrapping ParseTime with datetime type and default fsp.
|
|
func ParseDatetime(str string) (Time, error) {
|
|
return ParseTime(str, TypeDatetime, DefaultFsp)
|
|
}
|
|
|
|
// ParseTimestamp is a helper function wrapping ParseTime with timestamp type and default fsp.
|
|
func ParseTimestamp(str string) (Time, error) {
|
|
return ParseTime(str, TypeTimestamp, DefaultFsp)
|
|
}
|
|
|
|
// ParseDate is a helper function wrapping ParseTime with date type.
|
|
func ParseDate(str string) (Time, error) {
|
|
// date has no fractional seconds precision
|
|
return ParseTime(str, TypeDate, MinFsp)
|
|
}
|
|
|
|
// ParseTimeFromNum parses a formatted int64,
|
|
// returns the value which type is tp.
|
|
func ParseTimeFromNum(num int64, tp byte, fsp int) (Time, error) {
|
|
fsp, err := checkFsp(fsp)
|
|
if err != nil {
|
|
return Time{Time: ZeroTime, Type: tp}, errors.Trace(err)
|
|
}
|
|
|
|
t, err := parseDateTimeFromNum(num)
|
|
if err != nil {
|
|
return Time{Time: ZeroTime, Type: tp}, errors.Trace(err)
|
|
}
|
|
|
|
if !checkDatetime(t) {
|
|
return Time{Time: ZeroTime, Type: tp}, ErrInvalidTimeFormat
|
|
}
|
|
|
|
t.Fsp = fsp
|
|
return t.Convert(tp)
|
|
}
|
|
|
|
// ParseDatetimeFromNum is a helper function wrapping ParseTimeFromNum with datetime type and default fsp.
|
|
func ParseDatetimeFromNum(num int64) (Time, error) {
|
|
return ParseTimeFromNum(num, TypeDatetime, DefaultFsp)
|
|
}
|
|
|
|
// ParseTimestampFromNum is a helper function wrapping ParseTimeFromNum with timestamp type and default fsp.
|
|
func ParseTimestampFromNum(num int64) (Time, error) {
|
|
return ParseTimeFromNum(num, TypeTimestamp, DefaultFsp)
|
|
}
|
|
|
|
// ParseDateFromNum is a helper function wrapping ParseTimeFromNum with date type.
|
|
func ParseDateFromNum(num int64) (Time, error) {
|
|
// date has no fractional seconds precision
|
|
return ParseTimeFromNum(num, TypeDate, MinFsp)
|
|
}
|
|
|
|
func checkDatetime(t Time) bool {
|
|
if t.IsZero() {
|
|
return true
|
|
}
|
|
|
|
if t.Time.After(MaxDatetime) || t.Time.Before(MinDatetime) {
|
|
return false
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func checkTimestamp(t Time) bool {
|
|
if t.IsZero() {
|
|
return true
|
|
}
|
|
|
|
if t.Time.After(MaxTimestamp) || t.Time.Before(MinTimestamp) {
|
|
return false
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// ExtractTimeNum extracts time value number from time unit and format.
|
|
func ExtractTimeNum(unit string, t Time) (int64, error) {
|
|
switch strings.ToUpper(unit) {
|
|
case "MICROSECOND":
|
|
return int64(t.Nanosecond() / 1000), nil
|
|
case "SECOND":
|
|
return int64(t.Second()), nil
|
|
case "MINUTE":
|
|
return int64(t.Minute()), nil
|
|
case "HOUR":
|
|
return int64(t.Hour()), nil
|
|
case "DAY":
|
|
return int64(t.Day()), nil
|
|
case "WEEK":
|
|
_, week := t.ISOWeek()
|
|
return int64(week), nil
|
|
case "MONTH":
|
|
return int64(t.Month()), nil
|
|
case "QUARTER":
|
|
m := int64(t.Month())
|
|
// 1 - 3 -> 1
|
|
// 4 - 6 -> 2
|
|
// 7 - 9 -> 3
|
|
// 10 - 12 -> 4
|
|
return (m + 2) / 3, nil
|
|
case "YEAR":
|
|
return int64(t.Year()), nil
|
|
case "SECOND_MICROSECOND":
|
|
return int64(t.Second())*1000000 + int64(t.Nanosecond())/1000, nil
|
|
case "MINUTE_MICROSECOND":
|
|
_, m, s := t.Clock()
|
|
return int64(m)*100000000 + int64(s)*1000000 + int64(t.Nanosecond())/1000, nil
|
|
case "MINUTE_SECOND":
|
|
_, m, s := t.Clock()
|
|
return int64(m*100 + s), nil
|
|
case "HOUR_MICROSECOND":
|
|
h, m, s := t.Clock()
|
|
return int64(h)*10000000000 + int64(m)*100000000 + int64(s)*1000000 + int64(t.Nanosecond())/1000, nil
|
|
case "HOUR_SECOND":
|
|
h, m, s := t.Clock()
|
|
return int64(h)*10000 + int64(m)*100 + int64(s), nil
|
|
case "HOUR_MINUTE":
|
|
h, m, _ := t.Clock()
|
|
return int64(h)*100 + int64(m), nil
|
|
case "DAY_MICROSECOND":
|
|
h, m, s := t.Clock()
|
|
d := t.Day()
|
|
return int64(d*1000000+h*10000+m*100+s)*1000000 + int64(t.Nanosecond())/1000, nil
|
|
case "DAY_SECOND":
|
|
h, m, s := t.Clock()
|
|
d := t.Day()
|
|
return int64(d)*1000000 + int64(h)*10000 + int64(m)*100 + int64(s), nil
|
|
case "DAY_MINUTE":
|
|
h, m, _ := t.Clock()
|
|
d := t.Day()
|
|
return int64(d)*10000 + int64(h)*100 + int64(m), nil
|
|
case "DAY_HOUR":
|
|
h, _, _ := t.Clock()
|
|
d := t.Day()
|
|
return int64(d)*100 + int64(h), nil
|
|
case "YEAR_MONTH":
|
|
y, m, _ := t.Date()
|
|
return int64(y)*100 + int64(m), nil
|
|
default:
|
|
return 0, errors.Errorf("invalid unit %s", unit)
|
|
}
|
|
}
|
|
|
|
func extractSingleTimeValue(unit string, format string) (int64, int64, int64, time.Duration, error) {
|
|
iv, err := strconv.ParseInt(format, 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
v := time.Duration(iv)
|
|
switch strings.ToUpper(unit) {
|
|
case "MICROSECOND":
|
|
return 0, 0, 0, v * time.Microsecond, nil
|
|
case "SECOND":
|
|
return 0, 0, 0, v * time.Second, nil
|
|
case "MINUTE":
|
|
return 0, 0, 0, v * time.Minute, nil
|
|
case "HOUR":
|
|
return 0, 0, 0, v * time.Hour, nil
|
|
case "DAY":
|
|
return 0, 0, iv, 0, nil
|
|
case "WEEK":
|
|
return 0, 0, 7 * iv, 0, nil
|
|
case "MONTH":
|
|
return 0, iv, 0, 0, nil
|
|
case "QUARTER":
|
|
return 0, 3 * iv, 0, 0, nil
|
|
case "YEAR":
|
|
return iv, 0, 0, 0, nil
|
|
}
|
|
|
|
return 0, 0, 0, 0, errors.Errorf("invalid singel timeunit - %s", unit)
|
|
}
|
|
|
|
// Format is `SS.FFFFFF`.
|
|
func extractSecondMicrosecond(format string) (int64, int64, int64, time.Duration, error) {
|
|
fields := strings.Split(format, ".")
|
|
if len(fields) != 2 {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
seconds, err := strconv.ParseInt(fields[0], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
microseconds, err := strconv.ParseInt(alignFrac(fields[1], MaxFsp), 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
return 0, 0, 0, time.Duration(seconds)*time.Second + time.Duration(microseconds)*time.Microsecond, nil
|
|
}
|
|
|
|
// Format is `MM:SS.FFFFFF`.
|
|
func extractMinuteMicrosecond(format string) (int64, int64, int64, time.Duration, error) {
|
|
fields := strings.Split(format, ":")
|
|
if len(fields) != 2 {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
minutes, err := strconv.ParseInt(fields[0], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
_, _, _, value, err := extractSecondMicrosecond(fields[1])
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Trace(err)
|
|
}
|
|
|
|
return 0, 0, 0, time.Duration(minutes)*time.Minute + value, nil
|
|
}
|
|
|
|
// Format is `MM:SS`.
|
|
func extractMinuteSecond(format string) (int64, int64, int64, time.Duration, error) {
|
|
fields := strings.Split(format, ":")
|
|
if len(fields) != 2 {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
minutes, err := strconv.ParseInt(fields[0], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
seconds, err := strconv.ParseInt(fields[1], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
return 0, 0, 0, time.Duration(minutes)*time.Minute + time.Duration(seconds)*time.Second, nil
|
|
}
|
|
|
|
// Format is `HH:MM:SS.FFFFFF`.
|
|
func extractHourMicrosecond(format string) (int64, int64, int64, time.Duration, error) {
|
|
fields := strings.Split(format, ":")
|
|
if len(fields) != 3 {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
hours, err := strconv.ParseInt(fields[0], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
minutes, err := strconv.ParseInt(fields[1], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
_, _, _, value, err := extractSecondMicrosecond(fields[2])
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Trace(err)
|
|
}
|
|
|
|
return 0, 0, 0, time.Duration(hours)*time.Hour + time.Duration(minutes)*time.Minute + value, nil
|
|
}
|
|
|
|
// Format is `HH:MM:SS`.
|
|
func extractHourSecond(format string) (int64, int64, int64, time.Duration, error) {
|
|
fields := strings.Split(format, ":")
|
|
if len(fields) != 3 {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
hours, err := strconv.ParseInt(fields[0], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
minutes, err := strconv.ParseInt(fields[1], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
seconds, err := strconv.ParseInt(fields[2], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
return 0, 0, 0, time.Duration(hours)*time.Hour + time.Duration(minutes)*time.Minute + time.Duration(seconds)*time.Second, nil
|
|
}
|
|
|
|
// Format is `HH:MM`.
|
|
func extractHourMinute(format string) (int64, int64, int64, time.Duration, error) {
|
|
fields := strings.Split(format, ":")
|
|
if len(fields) != 2 {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
hours, err := strconv.ParseInt(fields[0], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
minutes, err := strconv.ParseInt(fields[1], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
return 0, 0, 0, time.Duration(hours)*time.Hour + time.Duration(minutes)*time.Minute, nil
|
|
}
|
|
|
|
// Format is `DD HH:MM:SS.FFFFFF`.
|
|
func extractDayMicrosecond(format string) (int64, int64, int64, time.Duration, error) {
|
|
fields := strings.Split(format, " ")
|
|
if len(fields) != 2 {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
days, err := strconv.ParseInt(fields[0], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
_, _, _, value, err := extractHourMicrosecond(fields[1])
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
return 0, 0, days, value, nil
|
|
}
|
|
|
|
// Format is `DD HH:MM:SS`.
|
|
func extractDaySecond(format string) (int64, int64, int64, time.Duration, error) {
|
|
fields := strings.Split(format, " ")
|
|
if len(fields) != 2 {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
days, err := strconv.ParseInt(fields[0], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
_, _, _, value, err := extractHourSecond(fields[1])
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
return 0, 0, days, value, nil
|
|
}
|
|
|
|
// Format is `DD HH:MM`.
|
|
func extractDayMinute(format string) (int64, int64, int64, time.Duration, error) {
|
|
fields := strings.Split(format, " ")
|
|
if len(fields) != 2 {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
days, err := strconv.ParseInt(fields[0], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
_, _, _, value, err := extractHourMinute(fields[1])
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
return 0, 0, days, value, nil
|
|
}
|
|
|
|
// Format is `DD HH`.
|
|
func extractDayHour(format string) (int64, int64, int64, time.Duration, error) {
|
|
fields := strings.Split(format, " ")
|
|
if len(fields) != 2 {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
days, err := strconv.ParseInt(fields[0], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
hours, err := strconv.ParseInt(fields[1], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
return 0, 0, days, time.Duration(hours) * time.Hour, nil
|
|
}
|
|
|
|
// Format is `YYYY-MM`.
|
|
func extractYearMonth(format string) (int64, int64, int64, time.Duration, error) {
|
|
fields := strings.Split(format, "-")
|
|
if len(fields) != 2 {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
years, err := strconv.ParseInt(fields[0], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
months, err := strconv.ParseInt(fields[1], 10, 64)
|
|
if err != nil {
|
|
return 0, 0, 0, 0, errors.Errorf("invalid time format - %s", format)
|
|
}
|
|
|
|
return years, months, 0, 0, nil
|
|
}
|
|
|
|
// ExtractTimeValue extracts time value from time unit and format.
|
|
func ExtractTimeValue(unit string, format string) (int64, int64, int64, time.Duration, error) {
|
|
switch strings.ToUpper(unit) {
|
|
case "MICROSECOND", "SECOND", "MINUTE", "HOUR", "DAY", "WEEK", "MONTH", "QUARTER", "YEAR":
|
|
return extractSingleTimeValue(unit, format)
|
|
case "SECOND_MICROSECOND":
|
|
return extractSecondMicrosecond(format)
|
|
case "MINUTE_MICROSECOND":
|
|
return extractMinuteMicrosecond(format)
|
|
case "MINUTE_SECOND":
|
|
return extractMinuteSecond(format)
|
|
case "HOUR_MICROSECOND":
|
|
return extractHourMicrosecond(format)
|
|
case "HOUR_SECOND":
|
|
return extractHourSecond(format)
|
|
case "HOUR_MINUTE":
|
|
return extractHourMinute(format)
|
|
case "DAY_MICROSECOND":
|
|
return extractDayMicrosecond(format)
|
|
case "DAY_SECOND":
|
|
return extractDaySecond(format)
|
|
case "DAY_MINUTE":
|
|
return extractDayMinute(format)
|
|
case "DAY_HOUR":
|
|
return extractDayHour(format)
|
|
case "YEAR_MONTH":
|
|
return extractYearMonth(format)
|
|
default:
|
|
return 0, 0, 0, 0, errors.Errorf("invalid singel timeunit - %s", unit)
|
|
}
|
|
}
|
|
|
|
// IsClockUnit returns true when unit is interval unit with hour, minute or second.
|
|
func IsClockUnit(unit string) bool {
|
|
switch strings.ToUpper(unit) {
|
|
case "MICROSECOND", "SECOND", "MINUTE", "HOUR",
|
|
"SECOND_MICROSECOND", "MINUTE_MICROSECOND", "MINUTE_SECOND",
|
|
"HOUR_MICROSECOND", "HOUR_SECOND", "HOUR_MINUTE",
|
|
"DAY_MICROSECOND", "DAY_SECOND", "DAY_MINUTE", "DAY_HOUR":
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
// IsDateFormat returns true when the specified time format could contain only date.
|
|
func IsDateFormat(format string) bool {
|
|
format = strings.TrimSpace(format)
|
|
seps := parseDateFormat(format)
|
|
length := len(format)
|
|
switch len(seps) {
|
|
case 1:
|
|
if (length == 8) || (length == 6) {
|
|
return true
|
|
}
|
|
case 3:
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
// ParseTimeFromInt64 parses mysql time value from int64.
|
|
func ParseTimeFromInt64(num int64) (Time, error) {
|
|
return parseDateTimeFromNum(num)
|
|
}
|