gotosocial/vendor/github.com/uptrace/bun/internal/time.go

package internal

import (
	"fmt"
	"time"
)

const (
	dateFormat         = "2006-01-02"
	timeFormat         = "15:04:05.999999999"
	timestampFormat    = "2006-01-02 15:04:05.999999999"
	timestamptzFormat  = "2006-01-02 15:04:05.999999999-07:00:00"
	timestamptzFormat2 = "2006-01-02 15:04:05.999999999-07:00"
	timestamptzFormat3 = "2006-01-02 15:04:05.999999999-07"
)

func ParseTime(s string) (time.Time, error) {
	switch l := len(s); {
	case l < len("15:04:05"):
		return time.Time{}, fmt.Errorf("bun: can't parse time=%q", s)
	case l <= len(timeFormat):
		if s[2] == ':' {
			return time.ParseInLocation(timeFormat, s, time.UTC)
		}
		return time.ParseInLocation(dateFormat, s, time.UTC)
	default:
		if s[10] == 'T' {
			return time.Parse(time.RFC3339Nano, s)
		}
		if c := s[l-9]; c == '+' || c == '-' {
			return time.Parse(timestamptzFormat, s)
		}
		if c := s[l-6]; c == '+' || c == '-' {
			return time.Parse(timestamptzFormat2, s)
		}
		if c := s[l-3]; c == '+' || c == '-' {
			return time.Parse(timestamptzFormat3, s)
		}
		return time.ParseInLocation(timestampFormat, s, time.UTC)
	}
}