blob: c3f2f7da8ba6e6dbff286ab7e92af6509a5db4b5 [file] [log] [blame]
// 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_[size_];
std::memset(append_destination, static_cast<int>(b), ResizeForAppend(count));
return *this;
}
ByteBuilder& ByteBuilder::append(const void* bytes, size_t count) {
std::byte* const append_destination = &buffer_[size_];
std::memcpy(append_destination, bytes, ResizeForAppend(count));
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