Bump version to 5.11.0

vendor/github.com/golang-sql/sqlexp/quoter.go

@@ -0,0 +1,57 @@
+// Copyright 2017 The Go 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 sqlexp
+
+import (
+	"context"
+	"database/sql/driver"
+	"errors"
+	"reflect"
+)
+
+// BUG(kardianos): Both the Quoter and Namer may need to access the server.
+
+// Quoter returns safe and valid SQL strings to use when building a SQL text.
+type Quoter interface {
+	// ID quotes identifiers such as schema, table, or column names.
+	// ID does not operate on multipart identifiers such as "public.Table",
+	// it only operates on single identifiers such as "public" and "Table".
+	ID(name string) string
+
+	// Value quotes database values such as string or []byte types as strings
+	// that are suitable and safe to embed in SQL text. The returned value
+	// of a string will include all surrounding quotes.
+	//
+	// If a value type is not supported it must panic.
+	Value(v interface{}) string
+}
+
+// DriverQuoter returns a Quoter interface and is suitable for extending
+// the driver.Driver type.
+//
+// The driver may need to hit the database to determine how it is configured to
+// ensure the correct escaping rules are used.
+type DriverQuoter interface {
+	Quoter(ctx context.Context) (Quoter, error)
+}
+
+// QuoterFromDriver takes a database driver, often obtained through a sql.DB.Driver
+// call or from using it directly to get the quoter interface.
+//
+// Currently MssqlDriver is hard-coded to also return a valided Quoter.
+func QuoterFromDriver(d driver.Driver, ctx context.Context) (Quoter, error) {
+	if q, is := d.(DriverQuoter); is {
+		return q.Quoter(ctx)
+	}
+	dv := reflect.ValueOf(d)
+
+	d, found := internalDrivers[dv.Type().String()]
+	if found {
+		if q, is := d.(DriverQuoter); is {
+			return q.Quoter(ctx)
+		}
+	}
+	return nil, errors.New("quoter interface not found")
+}