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https://fuchsia.googlesource.com/third_party/pigweed.googlesource.com/pigweed/pigweed
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3181d18e36
Added functionality to insert values to the buffer in the endianness order as specified by the user. Change-Id: Ie33ac7a38a35cdd1cfdb2952233d13f09242cc8c Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/12472 Reviewed-by: Wyatt Hepler <hepler@google.com> Commit-Queue: Shane Gomindes <shaneajg@google.com>
56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
// Copyright 2020 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include "pw_bytes/byte_builder.h"
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namespace pw {
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ByteBuilder& ByteBuilder::append(size_t count, std::byte b) {
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std::byte* const append_destination = &buffer_[size_];
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std::memset(append_destination, static_cast<int>(b), ResizeForAppend(count));
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return *this;
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}
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ByteBuilder& ByteBuilder::append(const void* bytes, size_t count) {
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std::byte* const append_destination = &buffer_[size_];
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std::memcpy(append_destination, bytes, ResizeForAppend(count));
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return *this;
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}
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size_t ByteBuilder::ResizeForAppend(size_t bytes_to_append) {
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if (!status_.ok()) {
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return 0;
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}
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if (bytes_to_append > max_size() - size()) {
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status_ = Status::RESOURCE_EXHAUSTED;
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return 0;
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}
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size_ += bytes_to_append;
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status_ = Status::OK;
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return bytes_to_append;
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}
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void ByteBuilder::resize(size_t new_size) {
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if (new_size <= size_) {
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size_ = new_size;
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status_ = Status::OK;
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} else {
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status_ = Status::OUT_OF_RANGE;
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}
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}
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} // namespace pw
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