初始化

2025-11-10 16:55:24 +00:00 · 2022-06-25 00:23:03 +08:00
commit ef0589e8e5
2264 changed files with 617829 additions and 0 deletions
--- a/cocos2d-x/cocos/base/CCData.h
+++ b/cocos2d-x/cocos/base/CCData.h
@@ -0,0 +1,157 @@
+/****************************************************************************
+ Copyright (c) 2010-2012 cocos2d-x.org
+ Copyright (c) 2013-2016 Chukong Technologies Inc.
+ Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
+
+ http://www.cocos2d-x.org
+
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ THE SOFTWARE.
+ ****************************************************************************/
+
+#ifndef __CCDATA_H__
+#define __CCDATA_H__
+
+#include "base/ccMacros.h"
+#include <stdint.h> // for ssize_t on android
+#include <string>   // for ssize_t on linux
+#include "platform/CCStdC.h" // for ssize_t on window
+
+/**
+ * @addtogroup base
+ * @js NA
+ * @lua NA
+ */
+NS_CC_BEGIN
+
+class CC_DLL Data
+{
+    friend class Properties;
+
+public:
+    /**
+     * This parameter is defined for convenient reference if a null Data object is needed.
+     */
+    static const Data Null;
+
+    /**
+     * Constructor of Data.
+     */
+    Data();
+
+    /**
+     * Copy constructor of Data.
+     */
+    Data(const Data& other);
+
+    /**
+     * Copy constructor of Data.
+     */
+    Data(Data&& other);
+
+    /**
+     * Destructor of Data.
+     */
+    ~Data();
+
+    /**
+     * Overloads of operator=.
+     */
+    Data& operator= (const Data& other);
+
+    /**
+     * Overloads of operator=.
+     */
+    Data& operator= (Data&& other);
+
+    /**
+     * Gets internal bytes of Data. It will return the pointer directly used in Data, so don't delete it.
+     *
+     * @return Pointer of bytes used internal in Data.
+     */
+    unsigned char* getBytes() const;
+
+    /**
+     * Gets the size of the bytes.
+     *
+     * @return The size of bytes of Data.
+     */
+    ssize_t getSize() const;
+
+    /** Copies the buffer pointer and its size.
+     *  @note This method will copy the whole buffer.
+     *        Developer should free the pointer after invoking this method.
+     *  @see Data::fastSet
+     */
+    void copy(const unsigned char* bytes, const ssize_t size);
+
+    /** Fast set the buffer pointer and its size. Please use it carefully.
+     *  @param bytes The buffer pointer, note that it have to be allocated by 'malloc' or 'calloc',
+     *         since in the destructor of Data, the buffer will be deleted by 'free'.
+     *  @note 1. This method will move the ownship of 'bytes'pointer to Data,
+     *        2. The pointer should not be used outside after it was passed to this method.
+     *  @see Data::copy
+     */
+    void fastSet(unsigned char* bytes, const ssize_t size);
+
+    /**
+     * Clears data, free buffer and reset data size.
+     */
+    void clear();
+
+    /**
+     * Check whether the data is null.
+     *
+     * @return True if the Data is null, false if not.
+     */
+    bool isNull() const;
+
+    /**
+     * Get the internal buffer of data and set data to empty state.
+     *
+     * The ownership of the buffer removed from the data object.
+     * That is the user have to free the returned buffer.
+     * The data object is set to empty state, that is internal buffer is set to nullptr
+     * and size is set to zero.
+     * Usage:
+     * @code
+     *  Data d;
+     *  // ...
+     *  ssize_t size;
+     *  unsigned char* buffer = d.takeBuffer(&size);
+     *  // use buffer and size
+     *  free(buffer);
+     * @endcode
+     *
+     * @param size Will fill with the data buffer size in bytes, if you do not care buffer size, pass nullptr.
+     * @return the internal data buffer, free it after use.
+     */
+    unsigned char* takeBuffer(ssize_t* size = nullptr);
+private:
+    void move(Data& other);
+
+private:
+    unsigned char* _bytes;
+    ssize_t _size;
+};
+
+
+NS_CC_END
+
+/** @} */
+#endif // __CCDATA_H__