-
Notifications
You must be signed in to change notification settings - Fork 0
/
scan.go
84 lines (77 loc) · 1.42 KB
/
scan.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
package types
import (
"database/sql"
"encoding/hex"
"errors"
"fmt"
"reflect"
"strconv"
"time"
"github.com/go-pg/pg/internal"
)
func Scan(v interface{}, b []byte) error {
switch v := v.(type) {
case *string:
*v = string(b)
return nil
case *[]byte:
if b == nil {
*v = nil
return nil
}
var err error
*v, err = scanBytes(b)
return err
case *int:
if b == nil {
*v = 0
return nil
}
var err error
*v, err = strconv.Atoi(internal.BytesToString(b))
return err
case *int64:
if b == nil {
*v = 0
return nil
}
var err error
*v, err = strconv.ParseInt(internal.BytesToString(b), 10, 64)
return err
case *time.Time:
if b == nil {
*v = time.Time{}
return nil
}
var err error
*v, err = ParseTime(b)
return err
}
vv := reflect.ValueOf(v)
if !vv.IsValid() {
return errors.New("pg: Scan(nil)")
}
if vv.Kind() != reflect.Ptr {
return fmt.Errorf("pg: Scan(non-pointer %T)", v)
}
vv = vv.Elem()
if !vv.IsValid() {
return fmt.Errorf("pg: Scan(non-pointer %T)", v)
}
return ScanValue(vv, b)
}
func scanSQLScanner(scanner sql.Scanner, b []byte) error {
if b == nil {
return scanner.Scan(nil)
}
return scanner.Scan(b)
}
func scanBytes(b []byte) ([]byte, error) {
if len(b) < 2 {
return nil, fmt.Errorf("pg: can't parse bytes: %q", b)
}
b = b[2:] // Trim off "\\x".
tmp := make([]byte, hex.DecodedLen(len(b)))
_, err := hex.Decode(tmp, b)
return tmp, err
}