| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef INCLUDE_PERFETTO_EXT_BASE_BASE64_H_ |
| #define INCLUDE_PERFETTO_EXT_BASE_BASE64_H_ |
| |
| #include <optional> |
| #include <string> |
| |
| #include "perfetto/ext/base/string_view.h" |
| #include "perfetto/ext/base/utils.h" // For ssize_t. |
| |
| namespace perfetto { |
| namespace base { |
| |
| // Returns the length of the destination string (included '=' padding). |
| // Does NOT include the size of the string null terminator. |
| inline size_t Base64EncSize(size_t src_size) { |
| return (src_size + 2) / 3 * 4; |
| } |
| |
| // Returns the upper bound on the length of the destination buffer. |
| // The actual decoded length might be <= the number returned here. |
| inline size_t Base64DecSize(size_t src_size) { |
| return (src_size + 3) / 4 * 3; |
| } |
| |
| // Does NOT null-terminate |dst|. |
| ssize_t Base64Encode(const void* src, |
| size_t src_size, |
| char* dst, |
| size_t dst_size); |
| |
| std::string Base64Encode(const void* src, size_t src_size); |
| |
| inline std::string Base64Encode(StringView sv) { |
| return Base64Encode(sv.data(), sv.size()); |
| } |
| |
| // Returns -1 in case of failure. |
| ssize_t Base64Decode(const char* src, |
| size_t src_size, |
| uint8_t* dst, |
| size_t dst_size); |
| |
| std::optional<std::string> Base64Decode(const char* src, size_t src_size); |
| |
| inline std::optional<std::string> Base64Decode(StringView sv) { |
| return Base64Decode(sv.data(), sv.size()); |
| } |
| |
| } // namespace base |
| } // namespace perfetto |
| |
| #endif // INCLUDE_PERFETTO_EXT_BASE_BASE64_H_ |