/*****************************************************************************\
*                                                                             *
* storage.h -	 Storage error codes, types, interfaces and API's             *
*                                                                             *
* Version 1.0								      *
*                                                                             *
* Copyright (c) 1993-1994, Microsoft Corp.	All rights reserved.	      *
*                                                                             *
\*****************************************************************************/

#if !defined( _STORAGE_H_ )
#define _STORAGE_H_


#include <compobj.h>


/****** Storage Error Codes *************************************************/

/* DOS-based error codes */
#define STG_E_INVALIDFUNCTION \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x01)

#define STG_E_FILENOTFOUND \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x02)

#define STG_E_PATHNOTFOUND \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x03)

#define STG_E_TOOMANYOPENFILES \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x04)

#define STG_E_ACCESSDENIED \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x05)

#define STG_E_INVALIDHANDLE \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x06)

#define STG_E_INSUFFICIENTMEMORY \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x08)

#define STG_E_INVALIDPOINTER \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x09)

#define STG_E_NOMOREFILES \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x12)

#define STG_E_DISKISWRITEPROTECTED \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x13)

#define STG_E_SEEKERROR \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x19)

#define STG_E_WRITEFAULT \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x1d)

#define STG_E_READFAULT \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x1e)

#define STG_E_LOCKVIOLATION \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x21)

#define STG_E_FILEALREADYEXISTS \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x50)

#define STG_E_INVALIDPARAMETER \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x57)

#define STG_E_MEDIUMFULL \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x70)

#define STG_E_ABNORMALAPIEXIT \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0xfa)

#define STG_E_INVALIDHEADER \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0xfb)

#define STG_E_INVALIDNAME \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0xfc)

#define STG_E_UNKNOWN \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0xfd)

#define STG_E_UNIMPLEMENTEDFUNCTION\
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0xfe)

#define STG_E_INVALIDFLAG \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0xff)

/* Standard storage error codes */
#define STG_E_INUSE \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x100)

#define STG_E_NOTCURRENT \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x101)

#define STG_E_REVERTED \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x102)

#define STG_E_CANTSAVE \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x103)

#define STG_E_OLDFORMAT \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x104)
    
#define STG_E_OLDDLL \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x105)

#define STG_E_SHAREREQUIRED \
    MAKE_SCODE(SEVERITY_ERROR, FACILITY_STORAGE, 0x106)

/* Information returns */
#define STG_S_CONVERTED \
    MAKE_SCODE(SEVERITY_SUCCESS, FACILITY_STORAGE, 0x200)

#define STG_S_BUFFEROVERFLOW \
    MAKE_SCODE(SEVERITY_SUCCESS, FACILITY_STORAGE, 0x201)

#define STG_S_TRYOVERWRITE \
    MAKE_SCODE(SEVERITY_SUCCESS, FACILITY_STORAGE, 0x202)


/****** Storage types *******************************************************/

#if defined(_M_I286)
typedef char TCHAR;
#ifndef HUGEP
#define HUGEP _huge
#endif
#else
typedef char TCHAR;
#ifndef HUGEP
#define HUGEP
#endif
#endif

#define CWCSTORAGENAME 32

/* Storage instantiation modes */
#define STGM_DIRECT     0x00000000L
#define STGM_TRANSACTED     0x00010000L

#define STGM_READ       0x00000000L
#define STGM_WRITE      0x00000001L
#define STGM_READWRITE      0x00000002L

#define STGM_SHARE_DENY_NONE    0x00000040L
#define STGM_SHARE_DENY_READ    0x00000030L
#define STGM_SHARE_DENY_WRITE   0x00000020L
#define STGM_SHARE_EXCLUSIVE    0x00000010L

#define STGM_PRIORITY       0x00040000L
#define STGM_DELETEONRELEASE    0x04000000L

#define STGM_CREATE     0x00001000L
#define STGM_CONVERT        0x00020000L
#define STGM_FAILIFTHERE    0x00000000L

/* Storage commit types */
typedef enum tagSTGC
{
    STGC_DEFAULT = 0,
    STGC_OVERWRITE  = 1,
    STGC_ONLYIFCURRENT  = 2,
    STGC_DANGEROUSLYCOMMITMERELYTODISKCACHE = 4
} STGC;

/* Stream name block definitions */
typedef char FAR * FAR *SNB;


#ifndef _WINDOWS_
#ifndef _FILETIME_
#define _FILETIME_
typedef struct FARSTRUCT tagFILETIME
{
    DWORD dwLowDateTime;
    DWORD dwHighDateTime;
} FILETIME;
#endif
#endif


/* Storage stat buffer */

typedef struct FARSTRUCT tagSTATSTG
{
    char FAR* pwcsName;
    DWORD type;
    ULARGE_INTEGER cbSize;
    FILETIME mtime;
    FILETIME ctime;
    FILETIME atime;
    DWORD grfMode;
    DWORD grfLocksSupported;
    CLSID clsid;
    DWORD grfStateBits;
    DWORD reserved;
} STATSTG;


/* Storage element types */
typedef enum tagSTGTY
{
    STGTY_STORAGE   = 1,
    STGTY_STREAM    = 2,
    STGTY_LOCKBYTES = 3,
    STGTY_PROPERTY  = 4
} STGTY;

typedef enum tagSTREAM_SEEK
{
    STREAM_SEEK_SET = 0,
    STREAM_SEEK_CUR = 1,
    STREAM_SEEK_END = 2
} STREAM_SEEK;

typedef enum tagLOCKTYPE
{
    LOCK_WRITE      = 1,
    LOCK_EXCLUSIVE  = 2,
    LOCK_ONLYONCE   = 4
} LOCKTYPE;

typedef enum tagSTGMOVE
{
    STGMOVE_MOVE    = 0,
    STGMOVE_COPY    = 1
} STGMOVE;

typedef enum tagSTATFLAG
{
    STATFLAG_DEFAULT = 0,
    STATFLAG_NONAME = 1
} STATFLAG;


/****** Storage Enumerators *************************************************/

#define LPENUMSTATSTG        IEnumSTATSTG FAR*

#undef  INTERFACE
#define INTERFACE   IEnumSTATSTG

DECLARE_INTERFACE_(IEnumSTATSTG, IUnknown)
{
    // *** IUnknown methods ***
    STDMETHOD(QueryInterface) (THIS_ REFIID riid, LPVOID FAR* ppvObj) PURE;
    STDMETHOD_(ULONG,AddRef) (THIS)  PURE;
    STDMETHOD_(ULONG,Release) (THIS) PURE;

    // *** IENUMSTATSTG methods ***
    STDMETHOD(Next) (THIS_ ULONG celt, STATSTG FAR * rgelt, ULONG FAR *pceltFetched) PURE;
    STDMETHOD(Skip) (THIS_ ULONG celt) PURE;
    STDMETHOD(Reset) (THIS) PURE;
    STDMETHOD(Clone) (THIS_ IEnumSTATSTG FAR *FAR *ppenm) PURE;
};


/****** ILockBytes Interface ************************************************/

#define LPLOCKBYTES     ILockBytes FAR*

#undef  INTERFACE
#define INTERFACE   ILockBytes

DECLARE_INTERFACE_(ILockBytes, IUnknown)
{
    // *** IUnknown methods ***
    STDMETHOD(QueryInterface) (THIS_ REFIID riid, LPVOID FAR* ppvObj) PURE;
    STDMETHOD_(ULONG,AddRef) (THIS)  PURE;
    STDMETHOD_(ULONG,Release) (THIS) PURE;

    // *** ILockBytes methods ***
    STDMETHOD(ReadAt) (THIS_ ULARGE_INTEGER ulOffset,
             VOID HUGEP *pv,
             ULONG cb,
             ULONG FAR *pcbRead) PURE;
    STDMETHOD(WriteAt) (THIS_ ULARGE_INTEGER ulOffset,
              VOID const HUGEP *pv,
              ULONG cb,
              ULONG FAR *pcbWritten) PURE;
    STDMETHOD(Flush) (THIS) PURE;
    STDMETHOD(SetSize) (THIS_ ULARGE_INTEGER cb) PURE;
    STDMETHOD(LockRegion) (THIS_ ULARGE_INTEGER libOffset,
                 ULARGE_INTEGER cb,
                 DWORD dwLockType) PURE;
    STDMETHOD(UnlockRegion) (THIS_ ULARGE_INTEGER libOffset,
                   ULARGE_INTEGER cb,
                 DWORD dwLockType) PURE;
    STDMETHOD(Stat) (THIS_ STATSTG FAR *pstatstg, DWORD grfStatFlag) PURE;
};


/****** IStream Interface ***************************************************/


#define LPSTREAM        IStream FAR*

#undef  INTERFACE
#define INTERFACE   IStream

DECLARE_INTERFACE_(IStream, IUnknown)
{
    // *** IUnknown methods ***
    STDMETHOD(QueryInterface) (THIS_ REFIID riid, LPVOID FAR* ppvObj) PURE;
    STDMETHOD_(ULONG,AddRef) (THIS)  PURE;
    STDMETHOD_(ULONG,Release) (THIS) PURE;

    // *** IStream methods ***
    STDMETHOD(Read) (THIS_ VOID HUGEP *pv,
             ULONG cb, ULONG FAR *pcbRead) PURE;
    STDMETHOD(Write) (THIS_ VOID const HUGEP *pv,
            ULONG cb,
            ULONG FAR *pcbWritten) PURE;
    STDMETHOD(Seek) (THIS_ LARGE_INTEGER dlibMove,
               DWORD dwOrigin,
               ULARGE_INTEGER FAR *plibNewPosition) PURE;
    STDMETHOD(SetSize) (THIS_ ULARGE_INTEGER libNewSize) PURE;
    STDMETHOD(CopyTo) (THIS_ IStream FAR *pstm,
             ULARGE_INTEGER cb,
             ULARGE_INTEGER FAR *pcbRead,
             ULARGE_INTEGER FAR *pcbWritten) PURE;
    STDMETHOD(Commit) (THIS_ DWORD grfCommitFlags) PURE;
    STDMETHOD(Revert) (THIS) PURE;
    STDMETHOD(LockRegion) (THIS_ ULARGE_INTEGER libOffset,
                 ULARGE_INTEGER cb,
                 DWORD dwLockType) PURE;
    STDMETHOD(UnlockRegion) (THIS_ ULARGE_INTEGER libOffset,
                 ULARGE_INTEGER cb,
                 DWORD dwLockType) PURE;
    STDMETHOD(Stat) (THIS_ STATSTG FAR *pstatstg, DWORD grfStatFlag) PURE;
    STDMETHOD(Clone)(THIS_ IStream FAR * FAR *ppstm) PURE;
};


/****** IStorage Interface **************************************************/

#define LPSTORAGE       IStorage FAR*

#undef  INTERFACE
#define INTERFACE   IStorage

DECLARE_INTERFACE_(IStorage, IUnknown)
{
    // *** IUnknown methods ***
    STDMETHOD(QueryInterface) (THIS_ REFIID riid, LPVOID FAR* ppvObj) PURE;
    STDMETHOD_(ULONG,AddRef) (THIS)  PURE;
    STDMETHOD_(ULONG,Release) (THIS) PURE;

    // *** IStorage methods ***
    STDMETHOD(CreateStream) (THIS_ const char FAR* pwcsName,
                   DWORD grfMode,
                   DWORD reserved1,
                   DWORD reserved2,
                   IStream FAR *FAR *ppstm) PURE;
    STDMETHOD(OpenStream) (THIS_ const char FAR* pwcsName,
         void FAR *reserved1,
                 DWORD grfMode,
                 DWORD reserved2,
                 IStream FAR *FAR *ppstm) PURE;
    STDMETHOD(CreateStorage) (THIS_ const char FAR* pwcsName,
                DWORD grfMode,
                DWORD reserved1,
                DWORD reserved2,
                IStorage FAR *FAR *ppstg) PURE;
    STDMETHOD(OpenStorage) (THIS_ const char FAR* pwcsName,
                  IStorage FAR *pstgPriority,
                  DWORD grfMode,
                  SNB snbExclude,
                  DWORD reserved,
                  IStorage FAR *FAR *ppstg) PURE;
    STDMETHOD(CopyTo) (THIS_ DWORD ciidExclude,
               IID const FAR *rgiidExclude,
               SNB snbExclude,
               IStorage FAR *pstgDest) PURE;
    STDMETHOD(MoveElementTo) (THIS_ char const FAR* lpszName,
                      IStorage FAR *pstgDest,
                              char const FAR* lpszNewName,
                              DWORD grfFlags) PURE;
    STDMETHOD(Commit) (THIS_ DWORD grfCommitFlags) PURE;
    STDMETHOD(Revert) (THIS) PURE;
    STDMETHOD(EnumElements) (THIS_ DWORD reserved1,
                 void FAR *reserved2,
                 DWORD reserved3,
                 IEnumSTATSTG FAR *FAR *ppenm) PURE;
    STDMETHOD(DestroyElement) (THIS_ const char FAR* pwcsName) PURE;
    STDMETHOD(RenameElement) (THIS_ const char FAR* pwcsOldName,
                const char FAR* pwcsNewName) PURE;
    STDMETHOD(SetElementTimes) (THIS_ const char FAR *lpszName,
                        FILETIME const FAR *pctime,
                                FILETIME const FAR *patime,
                                FILETIME const FAR *pmtime) PURE;
    STDMETHOD(SetClass) (THIS_ REFCLSID clsid) PURE;
    STDMETHOD(SetStateBits) (THIS_ DWORD grfStateBits, DWORD grfMask) PURE;
    STDMETHOD(Stat) (THIS_ STATSTG FAR *pstatstg, DWORD grfStatFlag) PURE;
};


/****** IRootStorage Interface **********************************************/

#define LPROOTSTORAGE       IRootStorage FAR*

#undef  INTERFACE
#define INTERFACE   IRootStorage

DECLARE_INTERFACE_(IRootStorage, IUnknown)
{
    // *** IUnknown methods ***
    STDMETHOD(QueryInterface) (THIS_ REFIID riid, LPVOID FAR* ppvObj) PURE;
    STDMETHOD_(ULONG,AddRef) (THIS)  PURE;
    STDMETHOD_(ULONG,Release) (THIS) PURE;

    // *** IRootStorage methods ***
    STDMETHOD(SwitchToFile) (THIS_ LPSTR lpstrFile) PURE;
};


/****** Storage API Prototypes ********************************************/

STDAPI StgCreateDocfile(const char FAR* pwcsName,
            DWORD grfMode,
            DWORD reserved,
            IStorage FAR * FAR *ppstgOpen);
STDAPI StgCreateDocfileOnILockBytes(ILockBytes FAR *plkbyt,
                    DWORD grfMode,
                    DWORD reserved,
                    IStorage FAR * FAR *ppstgOpen);
STDAPI StgOpenStorage(const char FAR* pwcsName,
              IStorage FAR *pstgPriority,
              DWORD grfMode,
              SNB snbExclude,
              DWORD reserved,
              IStorage FAR * FAR *ppstgOpen);
STDAPI StgOpenStorageOnILockBytes(ILockBytes FAR *plkbyt,
                  IStorage FAR *pstgPriority,
                  DWORD grfMode,
                  SNB snbExclude,
                  DWORD reserved,
                  IStorage FAR * FAR *ppstgOpen);
STDAPI StgIsStorageFile(const char FAR* pwcsName);
STDAPI StgIsStorageILockBytes(ILockBytes FAR* plkbyt);

STDAPI StgSetTimes(char const FAR* lpszName,
          FILETIME const FAR* pctime,
                  FILETIME const FAR* patime,
                  FILETIME const FAR* pmtime);

#endif