mirror of
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137 lines
3.6 KiB
C++
137 lines
3.6 KiB
C++
/****************************************************************************
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Copyright (c) 2010-2012 cocos2d-x.org
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Copyright (c) 2013-2016 Chukong Technologies Inc.
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Copyright (c) 2017-2022 Xiamen Yaji Software Co., Ltd.
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http://www.cocos.com
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated engine source code (the "Software"), a limited,
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worldwide, royalty-free, non-assignable, revocable and non-exclusive license
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to use Cocos Creator solely to develop games on your target platforms. You shall
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not use Cocos Creator software for developing other software or tools that's
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used for developing games. You are not granted to publish, distribute,
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sublicense, and/or sell copies of Cocos Creator.
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The software or tools in this License Agreement are licensed, not sold.
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Xiamen Yaji Software Co., Ltd. reserves all rights not expressly granted to you.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "base/Data.h"
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#include <cstring>
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#include "base/Log.h"
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namespace cc {
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const Data Data::NULL_DATA;
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Data::Data() : _bytes(nullptr),
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_size(0) {
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// CC_LOG_INFO("In the empty constructor of Data.");
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}
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Data::Data(Data &&other) noexcept : _bytes(nullptr),
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_size(0) {
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// CC_LOG_INFO("In the move constructor of Data.");
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move(other);
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}
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Data::Data(const Data &other) : _bytes(nullptr),
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_size(0) {
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// CC_LOG_INFO("In the copy constructor of Data.");
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copy(other._bytes, other._size);
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}
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Data::~Data() {
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// CC_LOG_INFO("deallocing Data: %p", this);
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clear();
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}
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Data &Data::operator=(const Data &other) {
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// CC_LOG_INFO("In the copy assignment of Data.");
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if (this != &other) {
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copy(other._bytes, other._size);
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}
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return *this;
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}
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Data &Data::operator=(Data &&other) noexcept {
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// CC_LOG_INFO("In the move assignment of Data.");
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move(other);
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return *this;
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}
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void Data::move(Data &other) {
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clear();
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_bytes = other._bytes;
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_size = other._size;
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other._bytes = nullptr;
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other._size = 0;
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}
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bool Data::isNull() const {
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return (_bytes == nullptr || _size == 0);
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}
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unsigned char *Data::getBytes() const {
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return _bytes;
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}
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ssize_t Data::getSize() const {
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return _size;
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}
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void Data::copy(const unsigned char *bytes, ssize_t size) {
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clear();
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if (size > 0) {
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_size = size;
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_bytes = static_cast<unsigned char *>(malloc(sizeof(unsigned char) * _size));
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memcpy(_bytes, bytes, _size);
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}
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}
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void Data::fastSet(unsigned char *bytes, ssize_t size) {
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free(_bytes);
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_bytes = bytes;
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_size = size;
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}
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void Data::resize(ssize_t size) {
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CC_ASSERT(size);
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if (_size == size) {
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return;
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}
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_size = size;
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_bytes = static_cast<unsigned char *>(realloc(_bytes, sizeof(unsigned char) * _size));
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}
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void Data::clear() {
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free(_bytes);
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_bytes = nullptr;
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_size = 0;
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}
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unsigned char *Data::takeBuffer(ssize_t *size) {
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auto *buffer = getBytes();
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if (size) {
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*size = getSize();
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}
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_bytes = nullptr;
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_size = 0;
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return buffer;
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}
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} // namespace cc
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