Import to pgx main repo in pgtype subdir

pgtype/database_sql.go

@@ -0,0 +1,41 @@
+package pgtype
+
+import (
+	"database/sql/driver"
+	"errors"
+)
+
+func DatabaseSQLValue(ci *ConnInfo, src Value) (interface{}, error) {
+	if valuer, ok := src.(driver.Valuer); ok {
+		return valuer.Value()
+	}
+
+	if textEncoder, ok := src.(TextEncoder); ok {
+		buf, err := textEncoder.EncodeText(ci, nil)
+		if err != nil {
+			return nil, err
+		}
+		return string(buf), nil
+	}
+
+	if binaryEncoder, ok := src.(BinaryEncoder); ok {
+		buf, err := binaryEncoder.EncodeBinary(ci, nil)
+		if err != nil {
+			return nil, err
+		}
+		return buf, nil
+	}
+
+	return nil, errors.New("cannot convert to database/sql compatible value")
+}
+
+func EncodeValueText(src TextEncoder) (interface{}, error) {
+	buf, err := src.EncodeText(nil, make([]byte, 0, 32))
+	if err != nil {
+		return nil, err
+	}
+	if buf == nil {
+		return nil, nil
+	}
+	return string(buf), err
+}