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package internal
import (
"fmt"
"time"
)
const (
dateFormat = "2006-01-02"
timeFormat = "15:04:05.999999999"
timetzFormat1 = "15:04:05.999999999-07:00:00"
timetzFormat2 = "15:04:05.999999999-07:00"
timetzFormat3 = "15:04:05.999999999-07"
timestampFormat = "2006-01-02 15:04:05.999999999"
timestamptzFormat1 = "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) {
l := len(s)
if l >= len("2006-01-02 15:04:05") {
switch s[10] {
case ' ':
if c := s[l-6]; c == '+' || c == '-' {
return time.Parse(timestamptzFormat2, s)
}
if c := s[l-3]; c == '+' || c == '-' {
return time.Parse(timestamptzFormat3, s)
}
if c := s[l-9]; c == '+' || c == '-' {
return time.Parse(timestamptzFormat1, s)
}
return time.ParseInLocation(timestampFormat, s, time.UTC)
case 'T':
return time.Parse(time.RFC3339Nano, s)
}
}
if l >= len("15:04:05-07") {
if c := s[l-6]; c == '+' || c == '-' {
return time.Parse(timetzFormat2, s)
}
if c := s[l-3]; c == '+' || c == '-' {
return time.Parse(timetzFormat3, s)
}
if c := s[l-9]; c == '+' || c == '-' {
return time.Parse(timetzFormat1, s)
}
}
if l < len("15:04:05") {
return time.Time{}, fmt.Errorf("bun: can't parse time=%q", s)
}
if s[2] == ':' {
return time.ParseInLocation(timeFormat, s, time.UTC)
}
return time.ParseInLocation(dateFormat, s, time.UTC)
}
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