| // Copyright 2020 The Pigweed Authors |
| // |
| // 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 |
| // |
| // https://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. |
| |
| #include "pw_bytes/byte_builder.h" |
| |
| namespace pw { |
| |
| ByteBuilder& ByteBuilder::append(size_t count, std::byte b) { |
| std::byte* const append_destination = buffer_.begin() + size_; |
| std::fill_n(append_destination, ResizeForAppend(count), b); |
| return *this; |
| } |
| |
| ByteBuilder& ByteBuilder::append(const void* bytes, size_t count) { |
| std::byte* const append_destination = buffer_.begin() + size_; |
| std::copy_n(static_cast<const std::byte*>(bytes), |
| ResizeForAppend(count), |
| append_destination); |
| return *this; |
| } |
| |
| size_t ByteBuilder::ResizeForAppend(size_t bytes_to_append) { |
| if (!status_.ok()) { |
| return 0; |
| } |
| |
| if (bytes_to_append > max_size() - size()) { |
| status_ = Status::ResourceExhausted(); |
| return 0; |
| } |
| |
| size_ += bytes_to_append; |
| status_ = OkStatus(); |
| return bytes_to_append; |
| } |
| |
| void ByteBuilder::resize(size_t new_size) { |
| if (new_size <= size_) { |
| size_ = new_size; |
| status_ = OkStatus(); |
| } else { |
| status_ = Status::OutOfRange(); |
| } |
| } |
| |
| } // namespace pw |