1 | /** |
2 | * Copyright 2021 Alibaba, Inc. and its affiliates. All Rights Reserved. |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
5 | * you may not use this file except in compliance with the License. |
6 | * You may obtain a copy of the License at |
7 | * |
8 | * http://www.apache.org/licenses/LICENSE-2.0 |
9 | * |
10 | * Unless required by applicable law or agreed to in writing, software |
11 | * distributed under the License is distributed on an "AS IS" BASIS, |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
13 | * See the License for the specific language governing permissions and |
14 | * limitations under the License. |
15 | |
16 | * \author Jiliang.ljl |
17 | * \date Mar 2021 |
18 | * \brief Interface of Base64 encode & decode |
19 | */ |
20 | |
21 | #ifndef __AILEGO_ENCODING_BASE64_H__ |
22 | #define __AILEGO_ENCODING_BASE64_H__ |
23 | |
24 | #include <cstring> |
25 | #include <string> |
26 | |
27 | namespace ailego { |
28 | |
29 | /*! Base64 encode & decode |
30 | */ |
31 | struct Base64 { |
32 | //! Encode the bytes in base64 encoding |
33 | static size_t Encode(const uint8_t *src, size_t len, uint8_t *dst); |
34 | |
35 | //! Decode the bytes with base64 encoding |
36 | static size_t Decode(const uint8_t *src, size_t len, uint8_t *dst); |
37 | |
38 | //! Encode the bytes in base64 encoding |
39 | static std::string Encode(const uint8_t *src, size_t len) { |
40 | std::string out; |
41 | out.resize((len + 2) / 3 * 4); |
42 | Encode(src, len, (uint8_t *)out.data()); |
43 | return out; |
44 | } |
45 | |
46 | //! Encode a stl-string in base64 encoding |
47 | static std::string Encode(const std::string &src) { |
48 | return Encode(reinterpret_cast<const uint8_t *>(src.c_str()), src.size()); |
49 | } |
50 | |
51 | //! Encode a c-string in base64 encoding |
52 | static std::string Encode(const char *src) { |
53 | return Encode(reinterpret_cast<const uint8_t *>(src), std::strlen(src)); |
54 | } |
55 | |
56 | //! Decode the bytes with base64 encoding |
57 | static std::string Decode(const uint8_t *src, size_t len) { |
58 | std::string out; |
59 | out.resize((len + 3) / 4 * 3); |
60 | out.resize(Decode(src, len, (uint8_t *)out.data())); |
61 | return out; |
62 | } |
63 | |
64 | //! Decode a c-string with base64 encoding |
65 | static std::string Decode(const char *src) { |
66 | return Decode(reinterpret_cast<const uint8_t *>(src), std::strlen(src)); |
67 | } |
68 | |
69 | //! Decode a stl-string with base64 encoding |
70 | static std::string Decode(const std::string &src) { |
71 | return Decode(reinterpret_cast<const uint8_t *>(src.c_str()), src.size()); |
72 | } |
73 | }; |
74 | |
75 | } // namespace ailego |
76 | |
77 | #endif // __AILEGO_ENCODING_BASE64_H__ |
78 | |