mirror of
https://codeberg.org/forgejo/forgejo
synced 2024-12-05 02:54:46 +01:00
348 lines
7.7 KiB
Go
348 lines
7.7 KiB
Go
// 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 xorm
|
|
|
|
import (
|
|
"database/sql/driver"
|
|
"errors"
|
|
"fmt"
|
|
"reflect"
|
|
"strconv"
|
|
"time"
|
|
)
|
|
|
|
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
|
|
} else {
|
|
c := make([]byte, len(b))
|
|
copy(c, b)
|
|
return c
|
|
}
|
|
}
|
|
|
|
func asString(src interface{}) string {
|
|
switch v := src.(type) {
|
|
case string:
|
|
return v
|
|
case []byte:
|
|
return string(v)
|
|
}
|
|
rv := reflect.ValueOf(src)
|
|
switch rv.Kind() {
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
return strconv.FormatInt(rv.Int(), 10)
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
|
return strconv.FormatUint(rv.Uint(), 10)
|
|
case reflect.Float64:
|
|
return strconv.FormatFloat(rv.Float(), 'g', -1, 64)
|
|
case reflect.Float32:
|
|
return strconv.FormatFloat(rv.Float(), 'g', -1, 32)
|
|
case reflect.Bool:
|
|
return strconv.FormatBool(rv.Bool())
|
|
}
|
|
return fmt.Sprintf("%v", src)
|
|
}
|
|
|
|
func asBytes(buf []byte, rv reflect.Value) (b []byte, ok bool) {
|
|
switch rv.Kind() {
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
return strconv.AppendInt(buf, rv.Int(), 10), true
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
|
return strconv.AppendUint(buf, rv.Uint(), 10), true
|
|
case reflect.Float32:
|
|
return strconv.AppendFloat(buf, rv.Float(), 'g', -1, 32), true
|
|
case reflect.Float64:
|
|
return strconv.AppendFloat(buf, rv.Float(), 'g', -1, 64), true
|
|
case reflect.Bool:
|
|
return strconv.AppendBool(buf, rv.Bool()), true
|
|
case reflect.String:
|
|
s := rv.String()
|
|
return append(buf, s...), true
|
|
}
|
|
return
|
|
}
|
|
|
|
// convertAssign 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 convertAssign(dest, src interface{}) error {
|
|
// Common cases, without reflect.
|
|
switch s := src.(type) {
|
|
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
|
|
}
|
|
}
|
|
|
|
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:
|
|
sv = reflect.ValueOf(src)
|
|
if b, ok := asBytes(nil, sv); 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
|
|
}
|
|
|
|
dpv := reflect.ValueOf(dest)
|
|
if dpv.Kind() != reflect.Ptr {
|
|
return errors.New("destination not a pointer")
|
|
}
|
|
if dpv.IsNil() {
|
|
return errNilPtr
|
|
}
|
|
|
|
if !sv.IsValid() {
|
|
sv = reflect.ValueOf(src)
|
|
}
|
|
|
|
dv := reflect.Indirect(dpv)
|
|
if sv.IsValid() && sv.Type().AssignableTo(dv.Type()) {
|
|
switch b := src.(type) {
|
|
case []byte:
|
|
dv.Set(reflect.ValueOf(cloneBytes(b)))
|
|
default:
|
|
dv.Set(sv)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
if dv.Kind() == sv.Kind() && sv.Type().ConvertibleTo(dv.Type()) {
|
|
dv.Set(sv.Convert(dv.Type()))
|
|
return nil
|
|
}
|
|
|
|
switch dv.Kind() {
|
|
case reflect.Ptr:
|
|
if src == nil {
|
|
dv.Set(reflect.Zero(dv.Type()))
|
|
return nil
|
|
}
|
|
|
|
dv.Set(reflect.New(dv.Type().Elem()))
|
|
return convertAssign(dv.Interface(), src)
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
s := asString(src)
|
|
i64, err := strconv.ParseInt(s, 10, dv.Type().Bits())
|
|
if err != nil {
|
|
err = strconvErr(err)
|
|
return fmt.Errorf("converting driver.Value type %T (%q) to a %s: %v", src, s, dv.Kind(), err)
|
|
}
|
|
dv.SetInt(i64)
|
|
return nil
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
|
s := asString(src)
|
|
u64, err := strconv.ParseUint(s, 10, dv.Type().Bits())
|
|
if err != nil {
|
|
err = strconvErr(err)
|
|
return fmt.Errorf("converting driver.Value type %T (%q) to a %s: %v", src, s, dv.Kind(), err)
|
|
}
|
|
dv.SetUint(u64)
|
|
return nil
|
|
case reflect.Float32, reflect.Float64:
|
|
s := asString(src)
|
|
f64, err := strconv.ParseFloat(s, dv.Type().Bits())
|
|
if err != nil {
|
|
err = strconvErr(err)
|
|
return fmt.Errorf("converting driver.Value type %T (%q) to a %s: %v", src, s, dv.Kind(), err)
|
|
}
|
|
dv.SetFloat(f64)
|
|
return nil
|
|
case reflect.String:
|
|
dv.SetString(asString(src))
|
|
return nil
|
|
}
|
|
|
|
return fmt.Errorf("unsupported Scan, storing driver.Value type %T into type %T", src, dest)
|
|
}
|
|
|
|
func asKind(vv reflect.Value, tp reflect.Type) (interface{}, error) {
|
|
switch tp.Kind() {
|
|
case reflect.Int64:
|
|
return vv.Int(), nil
|
|
case reflect.Int:
|
|
return int(vv.Int()), nil
|
|
case reflect.Int32:
|
|
return int32(vv.Int()), nil
|
|
case reflect.Int16:
|
|
return int16(vv.Int()), nil
|
|
case reflect.Int8:
|
|
return int8(vv.Int()), nil
|
|
case reflect.Uint64:
|
|
return vv.Uint(), nil
|
|
case reflect.Uint:
|
|
return uint(vv.Uint()), nil
|
|
case reflect.Uint32:
|
|
return uint32(vv.Uint()), nil
|
|
case reflect.Uint16:
|
|
return uint16(vv.Uint()), nil
|
|
case reflect.Uint8:
|
|
return uint8(vv.Uint()), nil
|
|
case reflect.String:
|
|
return vv.String(), nil
|
|
case reflect.Slice:
|
|
if tp.Elem().Kind() == reflect.Uint8 {
|
|
v, err := strconv.ParseInt(string(vv.Interface().([]byte)), 10, 64)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return v, nil
|
|
}
|
|
|
|
}
|
|
return nil, fmt.Errorf("unsupported primary key type: %v, %v", tp, vv)
|
|
}
|
|
|
|
func convertFloat(v interface{}) (float64, error) {
|
|
switch v.(type) {
|
|
case float32:
|
|
return float64(v.(float32)), nil
|
|
case float64:
|
|
return v.(float64), nil
|
|
case string:
|
|
i, err := strconv.ParseFloat(v.(string), 64)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return i, nil
|
|
case []byte:
|
|
i, err := strconv.ParseFloat(string(v.([]byte)), 64)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return i, nil
|
|
}
|
|
return 0, fmt.Errorf("unsupported type: %v", v)
|
|
}
|
|
|
|
func convertInt(v interface{}) (int64, error) {
|
|
switch v.(type) {
|
|
case int:
|
|
return int64(v.(int)), nil
|
|
case int8:
|
|
return int64(v.(int8)), nil
|
|
case int16:
|
|
return int64(v.(int16)), nil
|
|
case int32:
|
|
return int64(v.(int32)), nil
|
|
case int64:
|
|
return v.(int64), nil
|
|
case []byte:
|
|
i, err := strconv.ParseInt(string(v.([]byte)), 10, 64)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return i, nil
|
|
case string:
|
|
i, err := strconv.ParseInt(v.(string), 10, 64)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return i, nil
|
|
}
|
|
return 0, fmt.Errorf("unsupported type: %v", v)
|
|
}
|
|
|
|
func asBool(bs []byte) (bool, error) {
|
|
if len(bs) == 0 {
|
|
return false, nil
|
|
}
|
|
if bs[0] == 0x00 {
|
|
return false, nil
|
|
} else if bs[0] == 0x01 {
|
|
return true, nil
|
|
}
|
|
return strconv.ParseBool(string(bs))
|
|
}
|