| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/base64.h" |
| |
| #include <stddef.h> |
| |
| #include "third_party/modp_b64/modp_b64.h" |
| |
| namespace base { |
| |
| std::string Base64Encode(span<const uint8_t> input) { |
| std::string output; |
| output.resize(modp_b64_encode_len(input.size())); // makes room for null byte |
| |
| // modp_b64_encode_len() returns at least 1, so output[0] is safe to use. |
| const size_t output_size = modp_b64_encode( |
| &(output[0]), reinterpret_cast<const char*>(input.data()), input.size()); |
| |
| output.resize(output_size); |
| return output; |
| } |
| |
| void Base64Encode(const StringPiece& input, std::string* output) { |
| *output = Base64Encode(base::as_bytes(base::make_span(input))); |
| } |
| |
| bool Base64Decode(const StringPiece& input, std::string* output) { |
| std::string temp; |
| temp.resize(modp_b64_decode_len(input.size())); |
| |
| // does not null terminate result since result is binary data! |
| size_t input_size = input.size(); |
| size_t output_size = modp_b64_decode(&(temp[0]), input.data(), input_size); |
| if (output_size == MODP_B64_ERROR) |
| return false; |
| |
| temp.resize(output_size); |
| output->swap(temp); |
| return true; |
| } |
| |
| } // namespace base |