filemoniker.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

                break;
            }
        }
    }

    if (!bWriteWide)
    {
        res=IStream_Write(pStm,&ZERO,sizeof(DWORD),NULL);
        return res;
    }

    /* write bytes needed for the filepathW (without 0) + 6 */
    bytesW = len*sizeof(WCHAR) + 6;
    res=IStream_Write(pStm,&bytesW,sizeof(DWORD),NULL);
    if (!SUCCEEDED(res)) return res;

    /* try again, without the extra 6 */
    bytesW -= 6;
    res=IStream_Write(pStm,&bytesW,sizeof(DWORD),NULL);
    if (!SUCCEEDED(res)) return res;

    /* write a WORD 3 */
    res=IStream_Write(pStm,&THREE,sizeof(WORD),NULL);
    if (!SUCCEEDED(res)) return res;

    /* write W string (no 0) */
    res=IStream_Write(pStm,filePathW,bytesW,NULL);

    return res;
}

/******************************************************************************
 *        FileMoniker_GetSizeMax
 */
static HRESULT WINAPI
FileMonikerImpl_GetSizeMax(IMoniker* iface, ULARGE_INTEGER* pcbSize)
{
    FileMonikerImpl *This = (FileMonikerImpl *)iface;

    TRACE("(%p,%p)\n",iface,pcbSize);

    if (!pcbSize)
        return E_POINTER;

    /* We could calculate exactly (see ...::Save()) but instead
     * we'll make a quick over-estimate, like Windows (NT4, XP) does.
     */
    pcbSize->u.LowPart  = 0x38 + 4 * lstrlenW(This->filePathName);
    pcbSize->u.HighPart = 0;

    return S_OK;
}

/******************************************************************************
 *        FileMoniker_Destroy (local function)
 *******************************************************************************/
HRESULT WINAPI FileMonikerImpl_Destroy(FileMonikerImpl* This)
{
    TRACE("(%p)\n",This);

    if (This->pMarshal) IUnknown_Release(This->pMarshal);
    HeapFree(GetProcessHeap(),0,This->filePathName);
    HeapFree(GetProcessHeap(),0,This);

    return S_OK;
}

/******************************************************************************
 *                  FileMoniker_BindToObject
 */
static HRESULT WINAPI
FileMonikerImpl_BindToObject(IMoniker* iface, IBindCtx* pbc, IMoniker* pmkToLeft,
                             REFIID riid, VOID** ppvResult)
{
    HRESULT   res=E_FAIL;
    CLSID     clsID;
    IUnknown* pObj=0;
    IRunningObjectTable *prot=0;
    IPersistFile  *ppf=0;
    IClassFactory *pcf=0;
    IClassActivator *pca=0;

    FileMonikerImpl *This = (FileMonikerImpl *)iface;

    *ppvResult=0;

    TRACE("(%p,%p,%p,%s,%p)\n",iface,pbc,pmkToLeft,debugstr_guid(riid),ppvResult);

    if(pmkToLeft==NULL){

        res=IBindCtx_GetRunningObjectTable(pbc,&prot);

        if (SUCCEEDED(res)){
            /* if the requested class was loaded before ! we don't need to reload it */
            res = IRunningObjectTable_GetObject(prot,iface,&pObj);

            if (res==S_FALSE){
                /* first activation of this class */
                res=GetClassFile(This->filePathName,&clsID);
                if (SUCCEEDED(res)){

                    res=CoCreateInstance(&clsID,NULL,CLSCTX_ALL,&IID_IPersistFile,(void**)&ppf);
                    if (SUCCEEDED(res)){

                        res=IPersistFile_Load(ppf,This->filePathName,STGM_READ);
                        if (SUCCEEDED(res)){

                            pObj=(IUnknown*)ppf;
                            IUnknown_AddRef(pObj);
                        }
                    }
                }
            }
        }
    }
    else{
        res=IMoniker_BindToObject(pmkToLeft,pbc,NULL,&IID_IClassFactory,(void**)&pcf);

        if (res==E_NOINTERFACE){

            res=IMoniker_BindToObject(pmkToLeft,pbc,NULL,&IID_IClassActivator,(void**)&pca);

            if (res==E_NOINTERFACE)
                return MK_E_INTERMEDIATEINTERFACENOTSUPPORTED;
        }
        if (pcf!=NULL){

            IClassFactory_CreateInstance(pcf,NULL,&IID_IPersistFile,(void**)&ppf);

            res=IPersistFile_Load(ppf,This->filePathName,STGM_READ);

            if (SUCCEEDED(res)){

                pObj=(IUnknown*)ppf;
                IUnknown_AddRef(pObj);
            }
        }
        if (pca!=NULL){

            FIXME("()\n");

            /*res=GetClassFile(This->filePathName,&clsID);

            if (SUCCEEDED(res)){

                res=IClassActivator_GetClassObject(pca,&clsID,CLSCTX_ALL,0,&IID_IPersistFile,(void**)&ppf);

                if (SUCCEEDED(res)){

                    pObj=(IUnknown*)ppf;
                    IUnknown_AddRef(pObj);
                }
            }*/
        }
    }

    if (pObj!=NULL){
        /* get the requested interface from the loaded class */
        res= IUnknown_QueryInterface(pObj,riid,ppvResult);

        IBindCtx_RegisterObjectBound(pbc,(IUnknown*)*ppvResult);

        IUnknown_Release(pObj);
    }

    if (prot!=NULL)
        IRunningObjectTable_Release(prot);

    if (ppf!=NULL)
        IPersistFile_Release(ppf);

    if (pca!=NULL)
        IClassActivator_Release(pca);

    if (pcf!=NULL)
        IClassFactory_Release(pcf);

    return res;
}

/******************************************************************************
 *        FileMoniker_BindToStorage
 */
static HRESULT WINAPI
FileMonikerImpl_BindToStorage(IMoniker* iface, IBindCtx* pbc, IMoniker* pmkToLeft,
                              REFIID riid, VOID** ppvObject)
{
    LPOLESTR filePath=0;
    IStorage *pstg=0;
    HRESULT res;

    TRACE("(%p,%p,%p,%s,%p)\n",iface,pbc,pmkToLeft,debugstr_guid(riid),ppvObject);

    if (pmkToLeft==NULL){

        if (IsEqualIID(&IID_IStorage, riid)){

            /* get the file name */
            IMoniker_GetDisplayName(iface,pbc,pmkToLeft,&filePath);

            /* verifie if the file contains a storage object */
            res=StgIsStorageFile(filePath);

            if(res==S_OK){

                res=StgOpenStorage(filePath,NULL,STGM_READWRITE|STGM_SHARE_DENY_WRITE,NULL,0,&pstg);

                if (SUCCEEDED(res)){

                    *ppvObject=pstg;

                    IStorage_AddRef(pstg);

                    return res;
                }
            }
            CoTaskMemFree(filePath);
        }
        else
            if ( (IsEqualIID(&IID_IStream, riid)) || (IsEqualIID(&IID_ILockBytes, riid)) )
                return E_FAIL;
            else
                return E_NOINTERFACE;
    }
    else {

        FIXME("(%p,%p,%p,%s,%p)\n",iface,pbc,pmkToLeft,debugstr_guid(riid),ppvObject);

        return E_NOTIMPL;
    }
    return res;
}

/******************************************************************************
 *        FileMoniker_Reduce
 ******************************************************************************/
static HRESULT WINAPI
FileMonikerImpl_Reduce(IMoniker* iface, IBindCtx* pbc, DWORD dwReduceHowFar,
                       IMoniker** ppmkToLeft, IMoniker** ppmkReduced)
{
    TRACE("(%p,%p,%d,%p,%p)\n",iface,pbc,dwReduceHowFar,ppmkToLeft,ppmkReduced);

    if (ppmkReduced==NULL)
        return E_POINTER;

    IMoniker_AddRef(iface);

    *ppmkReduced=iface;

    return MK_S_REDUCED_TO_SELF;
}

/******************************************************************************
 *        FileMoniker_ComposeWith
 */
static HRESULT WINAPI
FileMonikerImpl_ComposeWith(IMoniker* iface, IMoniker* pmkRight,
                            BOOL fOnlyIfNotGeneric, IMoniker** ppmkComposite)
{
    HRESULT res;
    LPOLESTR str1=0,str2=0,*strDec1=0,*strDec2=0,newStr=0;
    static const WCHAR twoPoint[]={'.','.',0};
    static const WCHAR bkSlash[]={'\\',0};
    IBindCtx *bind=0;
    int i=0,j=0,lastIdx1=0,lastIdx2=0;
    DWORD mkSys;

    TRACE("(%p,%p,%d,%p)\n",iface,pmkRight,fOnlyIfNotGeneric,ppmkComposite);

    if (ppmkComposite==NULL)
        return E_POINTER;

    if (pmkRight==NULL)
	return E_INVALIDARG;

    *ppmkComposite=0;

    IMoniker_IsSystemMoniker(pmkRight,&mkSys);

    /* check if we have two filemonikers to compose or not */
    if(mkSys==MKSYS_FILEMONIKER){

        CreateBindCtx(0,&bind);

        IMoniker_GetDisplayName(iface,bind,NULL,&str1);
        IMoniker_GetDisplayName(pmkRight,bind,NULL,&str2);

        /* decompose pathnames of the two monikers : (to prepare the path merge operation ) */
        lastIdx1=FileMonikerImpl_DecomposePath(str1,&strDec1)-1;
        lastIdx2=FileMonikerImpl_DecomposePath(str2,&strDec2)-1;

        if ((lastIdx1==-1 && lastIdx2>-1)||(lastIdx1==1 && lstrcmpW(strDec1[0],twoPoint)==0))
            return MK_E_SYNTAX;

        if(lstrcmpW(strDec1[lastIdx1],bkSlash)==0)
            lastIdx1--;

        /* for etch "..\" in the left of str2 remove the right element from str1 */
        for(i=0; ( (lastIdx1>=0) && (strDec2[i]!=NULL) && (lstrcmpW(strDec2[i],twoPoint)==0) ) ;i+=2){

            lastIdx1-=2;
        }

        /* the length of the composed path string  is raised by the sum of the two paths lengths  */
        newStr=HeapAlloc(GetProcessHeap(),0,sizeof(WCHAR)*(lstrlenW(str1)+lstrlenW(str2)+1));

	  if (newStr==NULL)
		return E_OUTOFMEMORY;

        /* new path is the concatenation of the rest of str1 and str2 */
        for(*newStr=0,j=0;j<=lastIdx1;j++)
            strcatW(newStr,strDec1[j]);

        if ((strDec2[i]==NULL && lastIdx1>-1 && lastIdx2>-1) || lstrcmpW(strDec2[i],bkSlash)!=0)
            strcatW(newStr,bkSlash);

        for(j=i;j<=lastIdx2;j++)
            strcatW(newStr,strDec2[j]);

        /* create a new moniker with the new string */
        res=CreateFileMoniker(newStr,ppmkComposite);

        /* free all strings space memory used by this function */
        HeapFree(GetProcessHeap(),0,newStr);

        for(i=0; strDec1[i]!=NULL;i++)
            CoTaskMemFree(strDec1[i]);
        for(i=0; strDec2[i]!=NULL;i++)
            CoTaskMemFree(strDec2[i]);
        CoTaskMemFree(strDec1);
        CoTaskMemFree(strDec2);

        CoTaskMemFree(str1);
        CoTaskMemFree(str2);

        return res;
    }
    else if(mkSys==MKSYS_ANTIMONIKER){

        *ppmkComposite=NULL;
        return S_OK;
    }
    else if (fOnlyIfNotGeneric){

        *ppmkComposite=NULL;
        return MK_E_NEEDGENERIC;
    }
    else

        return CreateGenericComposite(iface,pmkRight,ppmkComposite);
}

/******************************************************************************
 *        FileMoniker_Enum
 */
static HRESULT WINAPI
FileMonikerImpl_Enum(IMoniker* iface,BOOL fForward, IEnumMoniker** ppenumMoniker)
{
    TRACE("(%p,%d,%p)\n",iface,fForward,ppenumMoniker);

    if (ppenumMoniker == NULL)
        return E_POINTER;

    *ppenumMoniker = NULL;

    return S_OK;
}

/******************************************************************************
 *        FileMoniker_IsEqual
 */
static HRESULT WINAPI
FileMonikerImpl_IsEqual(IMoniker* iface,IMoniker* pmkOtherMoniker)
{
    FileMonikerImpl *This = (FileMonikerImpl *)iface;
    CLSID clsid;
    LPOLESTR filePath;
    IBindCtx* bind;
    HRESULT res;

    TRACE("(%p,%p)\n",iface,pmkOtherMoniker);

    if (pmkOtherMoniker==NULL)
        return S_FALSE;

    IMoniker_GetClassID(pmkOtherMoniker,&clsid);

    if (!IsEqualCLSID(&clsid,&CLSID_FileMoniker))
        return S_FALSE;

    res = CreateBindCtx(0,&bind);
    if (FAILED(res)) return res;

    if (SUCCEEDED(IMoniker_GetDisplayName(pmkOtherMoniker,bind,NULL,&filePath))) {
	int result = lstrcmpiW(filePath, This->filePathName);
	CoTaskMemFree(filePath);
        if ( result == 0 ) return S_OK;
    }
    return S_FALSE;

}