storage.h

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/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
/* If you are missing that file, acquire a complete release at teeworlds.com.                */
#ifndef ENGINE_STORAGE_H
#define ENGINE_STORAGE_H
 
#include <base/hash.h>
#include <base/types.h>
 
#include "kernel.h"
 
#include <memory>
#include <set>
#include <string>
 
enum
{
    MAX_PATHS = 16
};
 
class IStorage : public IInterface
{
    MACRO_INTERFACE("storage")
public:
    enum
    {
        TYPE_SAVE = 0,
        TYPE_ALL = -1,
        TYPE_ABSOLUTE = -2,
        TYPE_SAVE_OR_ABSOLUTE = -3,
        TYPE_ALL_OR_ABSOLUTE = -4,
    };
 
    enum class EInitializationType
    {
        BASIC,
        SERVER,
        CLIENT,
    };
 
    virtual int NumPaths() const = 0;
 
    virtual void ListDirectory(int Type, const char *pPath, FS_LISTDIR_CALLBACK pfnCallback, void *pUser) = 0;
    virtual void ListDirectoryInfo(int Type, const char *pPath, FS_LISTDIR_CALLBACK_FILEINFO pfnCallback, void *pUser) = 0;
    virtual IOHANDLE OpenFile(const char *pFilename, int Flags, int Type, char *pBuffer = nullptr, int BufferSize = 0) = 0;
    virtual bool FileExists(const char *pFilename, int Type) = 0;
    virtual bool FolderExists(const char *pFilename, int Type) = 0;
    virtual bool ReadFile(const char *pFilename, int Type, void **ppResult, unsigned *pResultLen) = 0;
    virtual char *ReadFileStr(const char *pFilename, int Type) = 0;
    virtual bool RetrieveTimes(const char *pFilename, int Type, time_t *pCreated, time_t *pModified) = 0;
    virtual bool CalculateHashes(const char *pFilename, int Type, SHA256_DIGEST *pSha256, unsigned *pCrc = nullptr) = 0;
    virtual bool FindFile(const char *pFilename, const char *pPath, int Type, char *pBuffer, int BufferSize) = 0;
    virtual size_t FindFiles(const char *pFilename, const char *pPath, int Type, std::set<std::string> *pEntries) = 0;
    virtual bool RemoveFile(const char *pFilename, int Type) = 0;
    virtual bool RemoveFolder(const char *pFilename, int Type) = 0;
    virtual bool RenameFile(const char *pOldFilename, const char *pNewFilename, int Type) = 0;
    virtual bool CreateFolder(const char *pFoldername, int Type) = 0;
    virtual void GetCompletePath(int Type, const char *pDir, char *pBuffer, unsigned BufferSize) = 0;
 
    virtual bool RemoveBinaryFile(const char *pFilename) = 0;
    virtual bool RenameBinaryFile(const char *pOldFilename, const char *pNewFilename) = 0;
    virtual const char *GetBinaryPath(const char *pFilename, char *pBuffer, unsigned BufferSize) = 0;
    virtual const char *GetBinaryPathAbsolute(const char *pFilename, char *pBuffer, unsigned BufferSize) = 0;
 
    static void StripPathAndExtension(const char *pFilename, char *pBuffer, int BufferSize);
    static const char *FormatTmpPath(char *aBuf, unsigned BufSize, const char *pPath);
};
 
extern IStorage *CreateStorage(IStorage::EInitializationType InitializationType, int NumArgs, const char **ppArguments);
extern std::unique_ptr<IStorage> CreateLocalStorage();
extern std::unique_ptr<IStorage> CreateTempStorage(const char *pDirectory, int NumArgs, const char **ppArguments);
 
#endif