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117 lines
2.5 KiB
C++
117 lines
2.5 KiB
C++
/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
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/* If you are missing that file, acquire a complete release at teeworlds.com. */
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#ifndef ENGINE_SHARED_DATAFILE_H
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#define ENGINE_SHARED_DATAFILE_H
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#include <engine/storage.h>
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#include <base/hash.h>
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#include <base/system.h>
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#include <zlib.h>
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enum
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{
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ITEMTYPE_EX = 0xffff,
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};
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// raw datafile access
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class CDataFileReader
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{
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struct CDatafile *m_pDataFile;
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void *GetDataImpl(int Index, int Swap);
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int GetFileDataSize(int Index);
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int GetExternalItemType(int InternalType);
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int GetInternalItemType(int ExternalType);
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public:
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CDataFileReader() :
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m_pDataFile(0) {}
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~CDataFileReader() { Close(); }
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bool IsOpen() const { return m_pDataFile != 0; }
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bool Open(class IStorage *pStorage, const char *pFilename, int StorageType);
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bool Close();
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void *GetData(int Index);
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void *GetDataSwapped(int Index); // makes sure that the data is 32bit LE ints when saved
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int GetDataSize(int Index);
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void UnloadData(int Index);
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void *GetItem(int Index, int *pType, int *pID);
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int GetItemSize(int Index) const;
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void GetType(int Type, int *pStart, int *pNum);
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int FindItemIndex(int Type, int ID);
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void *FindItem(int Type, int ID);
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int NumItems() const;
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int NumData() const;
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void Unload();
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SHA256_DIGEST Sha256() const;
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unsigned Crc() const;
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int MapSize() const;
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IOHANDLE File();
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};
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// write access
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class CDataFileWriter
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{
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struct CDataInfo
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{
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int m_UncompressedSize;
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int m_CompressedSize;
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void *m_pCompressedData;
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};
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struct CItemInfo
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{
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int m_Type;
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int m_ID;
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int m_Size;
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int m_Next;
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int m_Prev;
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void *m_pData;
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};
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struct CItemTypeInfo
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{
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int m_Num;
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int m_First;
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int m_Last;
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};
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enum
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{
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MAX_ITEM_TYPES = 0x10000,
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MAX_ITEMS = 1024,
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MAX_DATAS = 1024,
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MAX_EXTENDED_ITEM_TYPES = 64,
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};
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IOHANDLE m_File;
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int m_NumItems;
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int m_NumDatas;
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int m_NumItemTypes;
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int m_NumExtendedItemTypes;
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CItemTypeInfo *m_pItemTypes;
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CItemInfo *m_pItems;
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CDataInfo *m_pDatas;
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int m_aExtendedItemTypes[MAX_EXTENDED_ITEM_TYPES];
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int GetExtendedItemTypeIndex(int Type);
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public:
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CDataFileWriter();
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~CDataFileWriter();
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void Init();
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bool OpenFile(class IStorage *pStorage, const char *pFilename, int StorageType = IStorage::TYPE_SAVE);
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bool Open(class IStorage *pStorage, const char *pFilename, int StorageType = IStorage::TYPE_SAVE);
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int AddData(int Size, void *pData, int CompressionLevel = Z_DEFAULT_COMPRESSION);
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int AddDataSwapped(int Size, void *pData);
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int AddItem(int Type, int ID, int Size, void *pData);
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int Finish();
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};
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#endif
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