69 lines
1.2 KiB
Go
69 lines
1.2 KiB
Go
//
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// nulltypes.go
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// Copyright (C) 2023 tiglog <me@tiglog.com>
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//
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// Distributed under terms of the MIT license.
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//
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package sqldb
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import (
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"database/sql/driver"
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"log"
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"time"
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)
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// A nullable Time value
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type NullTime struct {
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Time time.Time
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Valid bool // Valid is true if Time is not NULL
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}
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// Scan implements the Scanner interface.
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func (nt *NullTime) Scan(value interface{}) error {
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log.Printf("Time scan value is: %#v", value)
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switch t := value.(type) {
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case time.Time:
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nt.Time, nt.Valid = t, true
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case []byte:
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v := strToTime(string(t))
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if v != nil {
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nt.Valid = true
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nt.Time = *v
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}
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case string:
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v := strToTime(t)
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if v != nil {
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nt.Valid = true
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nt.Time = *v
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}
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}
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return nil
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}
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func strToTime(v string) *time.Time {
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for _, dtfmt := range []string{
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"2006-01-02 15:04:05.999999999",
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"2006-01-02T15:04:05.999999999",
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"2006-01-02 15:04:05",
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"2006-01-02T15:04:05",
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"2006-01-02 15:04",
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"2006-01-02T15:04",
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"2006-01-02",
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"2006-01-02 15:04:05-07:00",
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} {
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if t, err := time.Parse(dtfmt, v); err == nil {
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return &t
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}
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}
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return nil
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}
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// Value implements the driver Valuer interface.
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func (nt NullTime) Value() (driver.Value, error) {
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if !nt.Valid {
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return nil, nil
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}
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return nt.Time, nil
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}
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