mirror of https://github.com/ledisdb/ledisdb.git
95 lines
1.7 KiB
Go
95 lines
1.7 KiB
Go
package ledis
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"errors"
|
|
"github.com/siddontang/go/hack"
|
|
"strconv"
|
|
)
|
|
|
|
var errIntNumber = errors.New("invalid integer")
|
|
|
|
/*
|
|
Below I forget why I use little endian to store int.
|
|
Maybe I was foolish at that time.
|
|
*/
|
|
|
|
func Int64(v []byte, err error) (int64, error) {
|
|
if err != nil {
|
|
return 0, err
|
|
} else if v == nil || len(v) == 0 {
|
|
return 0, nil
|
|
} else if len(v) != 8 {
|
|
return 0, errIntNumber
|
|
}
|
|
|
|
return int64(binary.LittleEndian.Uint64(v)), nil
|
|
}
|
|
|
|
func Uint64(v []byte, err error) (uint64, error) {
|
|
if err != nil {
|
|
return 0, err
|
|
} else if v == nil || len(v) == 0 {
|
|
return 0, nil
|
|
} else if len(v) != 8 {
|
|
return 0, errIntNumber
|
|
}
|
|
|
|
return binary.LittleEndian.Uint64(v), nil
|
|
}
|
|
|
|
func PutInt64(v int64) []byte {
|
|
b := make([]byte, 8)
|
|
binary.LittleEndian.PutUint64(b, uint64(v))
|
|
return b
|
|
}
|
|
|
|
func StrInt64(v []byte, err error) (int64, error) {
|
|
if err != nil {
|
|
return 0, err
|
|
} else if v == nil {
|
|
return 0, nil
|
|
} else {
|
|
return strconv.ParseInt(hack.String(v), 10, 64)
|
|
}
|
|
}
|
|
|
|
func StrUint64(v []byte, err error) (uint64, error) {
|
|
if err != nil {
|
|
return 0, err
|
|
} else if v == nil {
|
|
return 0, nil
|
|
} else {
|
|
return strconv.ParseUint(hack.String(v), 10, 64)
|
|
}
|
|
}
|
|
|
|
func StrInt32(v []byte, err error) (int32, error) {
|
|
if err != nil {
|
|
return 0, err
|
|
} else if v == nil {
|
|
return 0, nil
|
|
} else {
|
|
res, err := strconv.ParseInt(hack.String(v), 10, 32)
|
|
return int32(res), err
|
|
}
|
|
}
|
|
|
|
func StrInt8(v []byte, err error) (int8, error) {
|
|
if err != nil {
|
|
return 0, err
|
|
} else if v == nil {
|
|
return 0, nil
|
|
} else {
|
|
res, err := strconv.ParseInt(hack.String(v), 10, 8)
|
|
return int8(res), err
|
|
}
|
|
}
|
|
|
|
func AsyncNotify(ch chan struct{}) {
|
|
select {
|
|
case ch <- struct{}{}:
|
|
default:
|
|
}
|
|
}
|