mirror of
https://github.com/go-gitea/gitea
synced 2024-12-24 09:34:26 +00:00
392 lines
7.5 KiB
Go
Vendored
392 lines
7.5 KiB
Go
Vendored
// Copyright 2017 The Xorm Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package convert
|
|
|
|
import (
|
|
"database/sql"
|
|
"database/sql/driver"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"math/big"
|
|
"reflect"
|
|
"strconv"
|
|
"time"
|
|
)
|
|
|
|
// Conversion is an interface. A type implements Conversion will according
|
|
// the custom method to fill into database and retrieve from database.
|
|
type Conversion interface {
|
|
FromDB([]byte) error
|
|
ToDB() ([]byte, error)
|
|
}
|
|
|
|
// ErrNilPtr represents an error
|
|
var ErrNilPtr = errors.New("destination pointer is nil") // embedded in descriptive error
|
|
|
|
func strconvErr(err error) error {
|
|
if ne, ok := err.(*strconv.NumError); ok {
|
|
return ne.Err
|
|
}
|
|
return err
|
|
}
|
|
|
|
func cloneBytes(b []byte) []byte {
|
|
if b == nil {
|
|
return nil
|
|
}
|
|
c := make([]byte, len(b))
|
|
copy(c, b)
|
|
return c
|
|
}
|
|
|
|
// Assign copies to dest the value in src, converting it if possible.
|
|
// An error is returned if the copy would result in loss of information.
|
|
// dest should be a pointer type.
|
|
func Assign(dest, src interface{}, originalLocation *time.Location, convertedLocation *time.Location) error {
|
|
// Common cases, without reflect.
|
|
switch s := src.(type) {
|
|
case *interface{}:
|
|
return Assign(dest, *s, originalLocation, convertedLocation)
|
|
case string:
|
|
switch d := dest.(type) {
|
|
case *string:
|
|
if d == nil {
|
|
return ErrNilPtr
|
|
}
|
|
*d = s
|
|
return nil
|
|
case *[]byte:
|
|
if d == nil {
|
|
return ErrNilPtr
|
|
}
|
|
*d = []byte(s)
|
|
return nil
|
|
}
|
|
case []byte:
|
|
switch d := dest.(type) {
|
|
case *string:
|
|
if d == nil {
|
|
return ErrNilPtr
|
|
}
|
|
*d = string(s)
|
|
return nil
|
|
case *interface{}:
|
|
if d == nil {
|
|
return ErrNilPtr
|
|
}
|
|
*d = cloneBytes(s)
|
|
return nil
|
|
case *[]byte:
|
|
if d == nil {
|
|
return ErrNilPtr
|
|
}
|
|
*d = cloneBytes(s)
|
|
return nil
|
|
}
|
|
case time.Time:
|
|
switch d := dest.(type) {
|
|
case *string:
|
|
*d = s.Format(time.RFC3339Nano)
|
|
return nil
|
|
case *[]byte:
|
|
if d == nil {
|
|
return ErrNilPtr
|
|
}
|
|
*d = []byte(s.Format(time.RFC3339Nano))
|
|
return nil
|
|
}
|
|
case nil:
|
|
switch d := dest.(type) {
|
|
case *interface{}:
|
|
if d == nil {
|
|
return ErrNilPtr
|
|
}
|
|
*d = nil
|
|
return nil
|
|
case *[]byte:
|
|
if d == nil {
|
|
return ErrNilPtr
|
|
}
|
|
*d = nil
|
|
return nil
|
|
}
|
|
case *sql.NullString:
|
|
switch d := dest.(type) {
|
|
case *int:
|
|
if s.Valid {
|
|
*d, _ = strconv.Atoi(s.String)
|
|
}
|
|
return nil
|
|
case *int64:
|
|
if s.Valid {
|
|
*d, _ = strconv.ParseInt(s.String, 10, 64)
|
|
}
|
|
return nil
|
|
case *string:
|
|
if s.Valid {
|
|
*d = s.String
|
|
}
|
|
return nil
|
|
case *time.Time:
|
|
if s.Valid {
|
|
var err error
|
|
dt, err := String2Time(s.String, originalLocation, convertedLocation)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
*d = *dt
|
|
}
|
|
return nil
|
|
case *sql.NullTime:
|
|
if s.Valid {
|
|
var err error
|
|
dt, err := String2Time(s.String, originalLocation, convertedLocation)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
d.Valid = true
|
|
d.Time = *dt
|
|
}
|
|
return nil
|
|
case *big.Float:
|
|
if s.Valid {
|
|
if d == nil {
|
|
d = big.NewFloat(0)
|
|
}
|
|
d.SetString(s.String)
|
|
}
|
|
return nil
|
|
}
|
|
case *sql.NullInt32:
|
|
switch d := dest.(type) {
|
|
case *int:
|
|
if s.Valid {
|
|
*d = int(s.Int32)
|
|
}
|
|
return nil
|
|
case *int8:
|
|
if s.Valid {
|
|
*d = int8(s.Int32)
|
|
}
|
|
return nil
|
|
case *int16:
|
|
if s.Valid {
|
|
*d = int16(s.Int32)
|
|
}
|
|
return nil
|
|
case *int32:
|
|
if s.Valid {
|
|
*d = s.Int32
|
|
}
|
|
return nil
|
|
case *int64:
|
|
if s.Valid {
|
|
*d = int64(s.Int32)
|
|
}
|
|
return nil
|
|
}
|
|
case *sql.NullInt64:
|
|
switch d := dest.(type) {
|
|
case *int:
|
|
if s.Valid {
|
|
*d = int(s.Int64)
|
|
}
|
|
return nil
|
|
case *int8:
|
|
if s.Valid {
|
|
*d = int8(s.Int64)
|
|
}
|
|
return nil
|
|
case *int16:
|
|
if s.Valid {
|
|
*d = int16(s.Int64)
|
|
}
|
|
return nil
|
|
case *int32:
|
|
if s.Valid {
|
|
*d = int32(s.Int64)
|
|
}
|
|
return nil
|
|
case *int64:
|
|
if s.Valid {
|
|
*d = s.Int64
|
|
}
|
|
return nil
|
|
}
|
|
case *sql.NullFloat64:
|
|
switch d := dest.(type) {
|
|
case *int:
|
|
if s.Valid {
|
|
*d = int(s.Float64)
|
|
}
|
|
return nil
|
|
case *float64:
|
|
if s.Valid {
|
|
*d = s.Float64
|
|
}
|
|
return nil
|
|
}
|
|
case *sql.NullBool:
|
|
switch d := dest.(type) {
|
|
case *bool:
|
|
if s.Valid {
|
|
*d = s.Bool
|
|
}
|
|
return nil
|
|
}
|
|
case *sql.NullTime:
|
|
switch d := dest.(type) {
|
|
case *time.Time:
|
|
if s.Valid {
|
|
*d = s.Time
|
|
}
|
|
return nil
|
|
case *string:
|
|
if s.Valid {
|
|
*d = s.Time.In(convertedLocation).Format("2006-01-02 15:04:05")
|
|
}
|
|
return nil
|
|
}
|
|
case *NullUint32:
|
|
switch d := dest.(type) {
|
|
case *uint8:
|
|
if s.Valid {
|
|
*d = uint8(s.Uint32)
|
|
}
|
|
return nil
|
|
case *uint16:
|
|
if s.Valid {
|
|
*d = uint16(s.Uint32)
|
|
}
|
|
return nil
|
|
case *uint:
|
|
if s.Valid {
|
|
*d = uint(s.Uint32)
|
|
}
|
|
return nil
|
|
}
|
|
case *NullUint64:
|
|
switch d := dest.(type) {
|
|
case *uint64:
|
|
if s.Valid {
|
|
*d = s.Uint64
|
|
}
|
|
return nil
|
|
}
|
|
case *sql.RawBytes:
|
|
switch d := dest.(type) {
|
|
case Conversion:
|
|
return d.FromDB(*s)
|
|
}
|
|
}
|
|
|
|
var sv reflect.Value
|
|
|
|
switch d := dest.(type) {
|
|
case *string:
|
|
sv = reflect.ValueOf(src)
|
|
switch sv.Kind() {
|
|
case reflect.Bool,
|
|
reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
|
|
reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
|
|
reflect.Float32, reflect.Float64:
|
|
*d = AsString(src)
|
|
return nil
|
|
}
|
|
case *[]byte:
|
|
if b, ok := AsBytes(src); ok {
|
|
*d = b
|
|
return nil
|
|
}
|
|
case *bool:
|
|
bv, err := driver.Bool.ConvertValue(src)
|
|
if err == nil {
|
|
*d = bv.(bool)
|
|
}
|
|
return err
|
|
case *interface{}:
|
|
*d = src
|
|
return nil
|
|
}
|
|
|
|
return AssignValue(reflect.ValueOf(dest), src)
|
|
}
|
|
|
|
var (
|
|
scannerTypePlaceHolder sql.Scanner
|
|
scannerType = reflect.TypeOf(&scannerTypePlaceHolder).Elem()
|
|
)
|
|
|
|
// AssignValue assign src as dv
|
|
func AssignValue(dv reflect.Value, src interface{}) error {
|
|
if src == nil {
|
|
return nil
|
|
}
|
|
if v, ok := src.(*interface{}); ok {
|
|
return AssignValue(dv, *v)
|
|
}
|
|
|
|
if dv.Type().Implements(scannerType) {
|
|
return dv.Interface().(sql.Scanner).Scan(src)
|
|
}
|
|
|
|
switch dv.Kind() {
|
|
case reflect.Ptr:
|
|
if dv.IsNil() {
|
|
dv.Set(reflect.New(dv.Type().Elem()))
|
|
}
|
|
return AssignValue(dv.Elem(), src)
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
i64, err := AsInt64(src)
|
|
if err != nil {
|
|
err = strconvErr(err)
|
|
return fmt.Errorf("converting driver.Value type %T to a %s: %v", src, dv.Kind(), err)
|
|
}
|
|
dv.SetInt(i64)
|
|
return nil
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
|
u64, err := AsUint64(src)
|
|
if err != nil {
|
|
err = strconvErr(err)
|
|
return fmt.Errorf("converting driver.Value type %T to a %s: %v", src, dv.Kind(), err)
|
|
}
|
|
dv.SetUint(u64)
|
|
return nil
|
|
case reflect.Float32, reflect.Float64:
|
|
f64, err := AsFloat64(src)
|
|
if err != nil {
|
|
err = strconvErr(err)
|
|
return fmt.Errorf("converting driver.Value type %T to a %s: %v", src, dv.Kind(), err)
|
|
}
|
|
dv.SetFloat(f64)
|
|
return nil
|
|
case reflect.String:
|
|
dv.SetString(AsString(src))
|
|
return nil
|
|
case reflect.Bool:
|
|
b, err := AsBool(src)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
dv.SetBool(b)
|
|
return nil
|
|
case reflect.Slice, reflect.Map, reflect.Struct, reflect.Array:
|
|
data, ok := AsBytes(src)
|
|
if !ok {
|
|
return fmt.Errorf("convert.AssignValue: src cannot be as bytes %#v", src)
|
|
}
|
|
if data == nil {
|
|
return nil
|
|
}
|
|
if dv.Kind() != reflect.Ptr {
|
|
dv = dv.Addr()
|
|
}
|
|
return json.Unmarshal(data, dv.Interface())
|
|
default:
|
|
return fmt.Errorf("convert.AssignValue: unsupported Scan, storing driver.Value type %T into type %T", src, dv.Interface())
|
|
}
|
|
}
|