133 lines
2.7 KiB
Go
133 lines
2.7 KiB
Go
// Copyright 2019 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package statements
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import (
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"fmt"
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"reflect"
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"strings"
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"time"
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"xorm.io/builder"
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"xorm.io/xorm/schemas"
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)
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func quoteNeeded(a interface{}) bool {
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switch a.(type) {
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case int, int8, int16, int32, int64:
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return false
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case uint, uint8, uint16, uint32, uint64:
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return false
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case float32, float64:
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return false
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case bool:
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return false
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case string:
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return true
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case time.Time, *time.Time:
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return true
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case builder.Builder, *builder.Builder:
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return false
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}
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t := reflect.TypeOf(a)
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switch t.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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return false
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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return false
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case reflect.Float32, reflect.Float64:
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return false
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case reflect.Bool:
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return false
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case reflect.String:
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return true
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}
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return true
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}
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func convertStringSingleQuote(arg string) string {
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return "'" + strings.Replace(arg, "'", "''", -1) + "'"
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}
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func convertString(arg string) string {
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var buf strings.Builder
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buf.WriteRune('\'')
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for _, c := range arg {
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if c == '\\' || c == '\'' {
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buf.WriteRune('\\')
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}
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buf.WriteRune(c)
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}
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buf.WriteRune('\'')
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return buf.String()
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}
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func convertArg(arg interface{}, convertFunc func(string) string) string {
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if quoteNeeded(arg) {
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argv := fmt.Sprintf("%v", arg)
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return convertFunc(argv)
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}
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return fmt.Sprintf("%v", arg)
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}
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const insertSelectPlaceHolder = true
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func (statement *Statement) WriteArg(w *builder.BytesWriter, arg interface{}) error {
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switch argv := arg.(type) {
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case *builder.Builder:
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if _, err := w.WriteString("("); err != nil {
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return err
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}
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if err := argv.WriteTo(w); err != nil {
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return err
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}
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if _, err := w.WriteString(")"); err != nil {
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return err
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}
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default:
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if insertSelectPlaceHolder {
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if err := w.WriteByte('?'); err != nil {
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return err
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}
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if v, ok := arg.(bool); ok && statement.dialect.URI().DBType == schemas.MSSQL {
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if v {
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w.Append(1)
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} else {
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w.Append(0)
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}
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} else {
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w.Append(arg)
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}
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} else {
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var convertFunc = convertStringSingleQuote
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if statement.dialect.URI().DBType == schemas.MYSQL {
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convertFunc = convertString
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}
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if _, err := w.WriteString(convertArg(arg, convertFunc)); err != nil {
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return err
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}
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}
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}
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return nil
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}
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func (statement *Statement) WriteArgs(w *builder.BytesWriter, args []interface{}) error {
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for i, arg := range args {
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if err := statement.WriteArg(w, arg); err != nil {
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return err
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}
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if i+1 != len(args) {
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if _, err := w.WriteString(","); err != nil {
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return err
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}
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}
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}
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return nil
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}
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