MySQL 9.1.0
Source Code Documentation
reader.h
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1/* Copyright (c) 2021, 2024, Oracle and/or its affiliates.
2
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License, version 2.0,
5 as published by the Free Software Foundation.
6
7 This program is designed to work with certain software (including
8 but not limited to OpenSSL) that is licensed under separate terms,
9 as designated in a particular file or component or in included license
10 documentation. The authors of MySQL hereby grant you an additional
11 permission to link the program and your derivative works with the
12 separately licensed software that they have either included with
13 the program or referenced in the documentation.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License, version 2.0, for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
23
24#ifndef READER_INCLUDED
25#define READER_INCLUDED
26
27#include <string>
28
30
31/* RAII class to read a file */
32class File_reader final {
33 public:
34 explicit File_reader(const std::string &file, bool read_only,
35 std::string &data);
36
37 /* Destructor */
38 ~File_reader() { valid_ = false; }
39
40 /* Get data size */
41 size_t size() const { return size_; }
42
43 /* Validity of reader */
44 bool valid() const { return valid_; }
45
46 private:
47 bool read_data_from_file(const std::string &file, std::string &data);
48
49 /** Validity of the reader */
50 bool valid_;
51 /** File size */
52 size_t size_;
53};
54
55} // namespace keyring_common::data_file
56
57#endif // !READER_INCLUDED
bool read_data_from_file(const std::string &file, std::string &data)
Definition: reader.cc:72
~File_reader()
Definition: reader.h:38
bool valid_
Validity of the reader.
Definition: reader.h:50
size_t size() const
Definition: reader.h:41
File_reader(const std::string &file, bool read_only, std::string &data)
Definition: reader.cc:32
size_t size_
File size.
Definition: reader.h:52
bool valid() const
Definition: reader.h:44
constexpr value_type read_only
Definition: classic_protocol_constants.h:213
Definition: os0file.h:89
Definition: reader.cc:29