mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
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/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <vapours.hpp>
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namespace ams::kvdb {
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class AutoBuffer {
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NON_COPYABLE(AutoBuffer);
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private:
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u8 *buffer;
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size_t size;
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public:
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AutoBuffer() : buffer(nullptr), size(0) { /* ... */ }
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~AutoBuffer() {
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this->Reset();
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}
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AutoBuffer(AutoBuffer &&rhs) {
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this->buffer = rhs.buffer;
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this->size = rhs.size;
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rhs.buffer = nullptr;
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rhs.size = 0;
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}
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AutoBuffer& operator=(AutoBuffer &&rhs) {
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rhs.Swap(*this);
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return *this;
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}
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void Swap(AutoBuffer &rhs) {
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std::swap(this->buffer, rhs.buffer);
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std::swap(this->size, rhs.size);
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}
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void Reset() {
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if (this->buffer != nullptr) {
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std::free(this->buffer);
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this->buffer = nullptr;
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this->size = 0;
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}
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}
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u8 *Get() const {
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return this->buffer;
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}
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size_t GetSize() const {
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return this->size;
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}
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Result Initialize(size_t size) {
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/* Check that we're not already initialized. */
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AMS_ASSERT(this->buffer == nullptr);
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/* Allocate a buffer. */
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this->buffer = static_cast<u8 *>(std::malloc(size));
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if (this->buffer == nullptr) {
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return ResultAllocationFailed();
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}
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this->size = size;
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return ResultSuccess();
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}
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Result Initialize(const void *buf, size_t size) {
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/* Create a new buffer of the right size. */
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R_TRY(this->Initialize(size));
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/* Copy the input data in. */
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std::memcpy(this->buffer, buf, size);
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return ResultSuccess();
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}
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};
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}
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