| /* OLE DB Conversion library | 
 |  * | 
 |  * Copyright 2009 Huw Davies | 
 |  * | 
 |  * This library is free software; you can redistribute it and/or | 
 |  * modify it under the terms of the GNU Lesser General Public | 
 |  * License as published by the Free Software Foundation; either | 
 |  * version 2.1 of the License, or (at your option) any later version. | 
 |  * | 
 |  * This library is distributed in the hope that it will be useful, | 
 |  * but WITHOUT ANY WARRANTY; without even the implied warranty of | 
 |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 
 |  * Lesser General Public License for more details. | 
 |  * | 
 |  * You should have received a copy of the GNU Lesser General Public | 
 |  * License along with this library; if not, write to the Free Software | 
 |  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA | 
 |  */ | 
 |  | 
 | #include <stdarg.h> | 
 |  | 
 | #define COBJMACROS | 
 | #define NONAMELESSUNION | 
 | #define NONAMELESSSTRUCT | 
 |  | 
 | #include "windef.h" | 
 | #include "winbase.h" | 
 | #include "winnls.h" | 
 | #include "ole2.h" | 
 | #include "msdadc.h" | 
 | #include "oledberr.h" | 
 |  | 
 | #include "oledb_private.h" | 
 |  | 
 | #include "wine/debug.h" | 
 |  | 
 | WINE_DEFAULT_DEBUG_CHANNEL(oledb); | 
 |  | 
 | typedef struct | 
 | { | 
 |     IDataConvert IDataConvert_iface; | 
 |     IDCInfo IDCInfo_iface; | 
 |  | 
 |     LONG ref; | 
 |  | 
 |     UINT version; /* Set by IDCInfo_SetInfo */ | 
 | } convert; | 
 |  | 
 | static inline convert *impl_from_IDataConvert(IDataConvert *iface) | 
 | { | 
 |     return CONTAINING_RECORD(iface, convert, IDataConvert_iface); | 
 | } | 
 |  | 
 | static inline convert *impl_from_IDCInfo(IDCInfo *iface) | 
 | { | 
 |     return CONTAINING_RECORD(iface, convert, IDCInfo_iface); | 
 | } | 
 |  | 
 | static HRESULT WINAPI convert_QueryInterface(IDataConvert* iface, | 
 |                                              REFIID riid, | 
 |                                              void **obj) | 
 | { | 
 |     convert *This = impl_from_IDataConvert(iface); | 
 |     TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), obj); | 
 |  | 
 |     *obj = NULL; | 
 |  | 
 |     if(IsEqualIID(riid, &IID_IUnknown) || | 
 |        IsEqualIID(riid, &IID_IDataConvert)) | 
 |     { | 
 |         *obj = iface; | 
 |     } | 
 |     else if(IsEqualIID(riid, &IID_IDCInfo)) | 
 |     { | 
 |         *obj = &This->IDCInfo_iface; | 
 |     } | 
 |     else | 
 |     { | 
 |         FIXME("interface %s not implemented\n", debugstr_guid(riid)); | 
 |         return E_NOINTERFACE; | 
 |     } | 
 |  | 
 |     IDataConvert_AddRef(iface); | 
 |     return S_OK; | 
 | } | 
 |  | 
 |  | 
 | static ULONG WINAPI convert_AddRef(IDataConvert* iface) | 
 | { | 
 |     convert *This = impl_from_IDataConvert(iface); | 
 |     TRACE("(%p)\n", This); | 
 |  | 
 |     return InterlockedIncrement(&This->ref); | 
 | } | 
 |  | 
 |  | 
 | static ULONG WINAPI convert_Release(IDataConvert* iface) | 
 | { | 
 |     convert *This = impl_from_IDataConvert(iface); | 
 |     LONG ref; | 
 |  | 
 |     TRACE("(%p)\n", This); | 
 |  | 
 |     ref = InterlockedDecrement(&This->ref); | 
 |     if(ref == 0) | 
 |     { | 
 |         HeapFree(GetProcessHeap(), 0, This); | 
 |     } | 
 |  | 
 |     return ref; | 
 | } | 
 |  | 
 | static int get_length(DBTYPE type) | 
 | { | 
 |     switch(type) | 
 |     { | 
 |     case DBTYPE_I1: | 
 |     case DBTYPE_UI1: | 
 |         return 1; | 
 |     case DBTYPE_I2: | 
 |     case DBTYPE_UI2: | 
 |         return 2; | 
 |     case DBTYPE_BOOL: | 
 | 	return sizeof(VARIANT_BOOL); | 
 |     case DBTYPE_I4: | 
 |     case DBTYPE_UI4: | 
 |     case DBTYPE_R4: | 
 |         return 4; | 
 |     case DBTYPE_I8: | 
 |     case DBTYPE_UI8: | 
 |     case DBTYPE_R8: | 
 |     case DBTYPE_DATE: | 
 |         return 8; | 
 |     case DBTYPE_DBTIMESTAMP: | 
 | 	return sizeof(DBTIMESTAMP); | 
 |     case DBTYPE_CY: | 
 |         return sizeof(CY); | 
 |     case DBTYPE_BSTR: | 
 |         return sizeof(BSTR); | 
 |     case DBTYPE_FILETIME: | 
 |         return sizeof(FILETIME); | 
 |     case DBTYPE_GUID: | 
 |         return sizeof(GUID); | 
 |     case DBTYPE_WSTR: | 
 |     case DBTYPE_STR: | 
 |     case DBTYPE_BYREF | DBTYPE_WSTR: | 
 |         return 0; | 
 |     default: | 
 |         FIXME("Unhandled type %04x\n", type); | 
 |         return 0; | 
 |     } | 
 | } | 
 |  | 
 | static HRESULT WINAPI convert_DataConvert(IDataConvert* iface, | 
 |                                           DBTYPE src_type, DBTYPE dst_type, | 
 |                                           DBLENGTH src_len, DBLENGTH *dst_len, | 
 |                                           void *src, void *dst, | 
 |                                           DBLENGTH dst_max_len, | 
 |                                           DBSTATUS src_status, DBSTATUS *dst_status, | 
 |                                           BYTE precision, BYTE scale, | 
 |                                           DBDATACONVERT flags) | 
 | { | 
 |     convert *This = impl_from_IDataConvert(iface); | 
 |     HRESULT hr; | 
 |  | 
 |     TRACE("(%p)->(%d, %d, %ld, %p, %p, %p, %ld, %d, %p, %d, %d, %x)\n", This, | 
 |           src_type, dst_type, src_len, dst_len, src, dst, dst_max_len, | 
 |           src_status, dst_status, precision, scale, flags); | 
 |  | 
 |     *dst_status = DBSTATUS_E_BADACCESSOR; | 
 |  | 
 |     if(IDataConvert_CanConvert(iface, src_type, dst_type) != S_OK) | 
 |     { | 
 |         return DB_E_UNSUPPORTEDCONVERSION; | 
 |     } | 
 |  | 
 |     if(src_type == DBTYPE_STR) | 
 |     { | 
 |         BSTR b; | 
 |         DWORD len; | 
 |  | 
 |         if(flags & DBDATACONVERT_LENGTHFROMNTS) | 
 |             len = MultiByteToWideChar(CP_ACP, 0, src, -1, NULL, 0) - 1; | 
 |         else | 
 |             len = MultiByteToWideChar(CP_ACP, 0, src, src_len, NULL, 0); | 
 |         b = SysAllocStringLen(NULL, len); | 
 |         if(!b) return E_OUTOFMEMORY; | 
 |         if(flags & DBDATACONVERT_LENGTHFROMNTS) | 
 |             MultiByteToWideChar(CP_ACP, 0, src, -1, b, len + 1); | 
 |         else | 
 |             MultiByteToWideChar(CP_ACP, 0, src, src_len, b, len); | 
 |  | 
 |         hr = IDataConvert_DataConvert(iface, DBTYPE_BSTR, dst_type, 0, dst_len, | 
 |                                       &b, dst, dst_max_len, src_status, dst_status, | 
 |                                       precision, scale, flags); | 
 |  | 
 |         SysFreeString(b); | 
 |         return hr; | 
 |     } | 
 |  | 
 |     if(src_type == DBTYPE_WSTR) | 
 |     { | 
 |         BSTR b; | 
 |  | 
 |         if(flags & DBDATACONVERT_LENGTHFROMNTS) | 
 |             b = SysAllocString(src); | 
 |         else | 
 |             b = SysAllocStringLen(src, src_len / 2); | 
 |         if(!b) return E_OUTOFMEMORY; | 
 |         hr = IDataConvert_DataConvert(iface, DBTYPE_BSTR, dst_type, 0, dst_len, | 
 |                                       &b, dst, dst_max_len, src_status, dst_status, | 
 |                                       precision, scale, flags); | 
 |         SysFreeString(b); | 
 |         return hr; | 
 |     } | 
 |  | 
 |     switch(dst_type) | 
 |     { | 
 |     case DBTYPE_I2: | 
 |     { | 
 |         signed short *d = dst; | 
 |         VARIANT tmp; | 
 |         switch(src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:       *d = 0; hr = S_OK;                              break; | 
 |         case DBTYPE_I2:          *d = *(signed short*)src; hr = S_OK;            break; | 
 |         case DBTYPE_I4:          hr = VarI2FromI4(*(signed int*)src, d);         break; | 
 |         case DBTYPE_R4:          hr = VarI2FromR4(*(FLOAT*)src, d);              break; | 
 |         case DBTYPE_R8:          hr = VarI2FromR8(*(double*)src, d);             break; | 
 |         case DBTYPE_CY:          hr = VarI2FromCy(*(CY*)src, d);                 break; | 
 |         case DBTYPE_DATE:        hr = VarI2FromDate(*(DATE*)src, d);             break; | 
 |         case DBTYPE_BSTR:        hr = VarI2FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break; | 
 |         case DBTYPE_BOOL:        hr = VarI2FromBool(*(VARIANT_BOOL*)src, d);     break; | 
 |         case DBTYPE_DECIMAL:     hr = VarI2FromDec((DECIMAL*)src, d);            break; | 
 |         case DBTYPE_I1:          hr = VarI2FromI1(*(signed char*)src, d);        break; | 
 |         case DBTYPE_UI1:         hr = VarI2FromUI1(*(BYTE*)src, d);              break; | 
 |         case DBTYPE_UI2:         hr = VarI2FromUI2(*(WORD*)src, d);              break; | 
 |         case DBTYPE_UI4:         hr = VarI2FromUI4(*(DWORD*)src, d);             break; | 
 |         case DBTYPE_I8:          hr = VarI2FromI8(*(LONGLONG*)src, d);           break; | 
 |         case DBTYPE_UI8:         hr = VarI2FromUI8(*(ULONGLONG*)src, d);         break; | 
 |         case DBTYPE_VARIANT: | 
 |             VariantInit(&tmp); | 
 |             if ((hr = VariantChangeType(&tmp, (VARIANT*)src, 0, VT_I2)) == S_OK) | 
 |                 *d = V_I2(&tmp); | 
 |             break; | 
 |         default: FIXME("Unimplemented conversion %04x -> I2\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |  | 
 |     case DBTYPE_I4: | 
 |     { | 
 |         signed int *d = dst; | 
 |         VARIANT tmp; | 
 |         switch(src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:       *d = 0; hr = S_OK;                              break; | 
 |         case DBTYPE_I2:          hr = VarI4FromI2(*(signed short*)src, d);       break; | 
 |         case DBTYPE_I4:          *d = *(signed int*)src; hr = S_OK;              break; | 
 |         case DBTYPE_R4:          hr = VarI4FromR4(*(FLOAT*)src, d);              break; | 
 |         case DBTYPE_R8:          hr = VarI4FromR8(*(double*)src, d);             break; | 
 |         case DBTYPE_CY:          hr = VarI4FromCy(*(CY*)src, d);                 break; | 
 |         case DBTYPE_DATE:        hr = VarI4FromDate(*(DATE*)src, d);             break; | 
 |         case DBTYPE_BSTR:        hr = VarI4FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break; | 
 |         case DBTYPE_BOOL:        hr = VarI4FromBool(*(VARIANT_BOOL*)src, d);     break; | 
 |         case DBTYPE_DECIMAL:     hr = VarI4FromDec((DECIMAL*)src, d);            break; | 
 |         case DBTYPE_I1:          hr = VarI4FromI1(*(signed char*)src, d);        break; | 
 |         case DBTYPE_UI1:         hr = VarI4FromUI1(*(BYTE*)src, d);              break; | 
 |         case DBTYPE_UI2:         hr = VarI4FromUI2(*(WORD*)src, d);              break; | 
 |         case DBTYPE_UI4:         hr = VarI4FromUI4(*(DWORD*)src, d);             break; | 
 |         case DBTYPE_I8:          hr = VarI4FromI8(*(LONGLONG*)src, d);           break; | 
 |         case DBTYPE_UI8:         hr = VarI4FromUI8(*(ULONGLONG*)src, d);         break; | 
 |         case DBTYPE_VARIANT: | 
 |             VariantInit(&tmp); | 
 |             if ((hr = VariantChangeType(&tmp, (VARIANT*)src, 0, VT_I4)) == S_OK) | 
 |                 *d = V_I4(&tmp); | 
 |             break; | 
 |         default: FIXME("Unimplemented conversion %04x -> I4\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |  | 
 |     case DBTYPE_R4: | 
 |     { | 
 |         FLOAT *d = dst; | 
 |         switch(src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:       *d = 0; hr = S_OK;                              break; | 
 |         case DBTYPE_I2:          hr = VarR4FromI2(*(signed short*)src, d);       break; | 
 |         case DBTYPE_I4:          hr = VarR4FromI4(*(signed int*)src, d);         break; | 
 |         case DBTYPE_R4:          *d = *(FLOAT*)src; hr = S_OK;                   break; | 
 |         case DBTYPE_R8:          hr = VarR4FromR8(*(double*)src, d);             break; | 
 |         case DBTYPE_CY:          hr = VarR4FromCy(*(CY*)src, d);                 break; | 
 |         case DBTYPE_DATE:        hr = VarR4FromDate(*(DATE*)src, d);             break; | 
 |         case DBTYPE_BSTR:        hr = VarR4FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break; | 
 |         case DBTYPE_BOOL:        hr = VarR4FromBool(*(VARIANT_BOOL*)src, d);     break; | 
 |         case DBTYPE_DECIMAL:     hr = VarR4FromDec((DECIMAL*)src, d);            break; | 
 |         case DBTYPE_I1:          hr = VarR4FromI1(*(signed char*)src, d);        break; | 
 |         case DBTYPE_UI1:         hr = VarR4FromUI1(*(BYTE*)src, d);              break; | 
 |         case DBTYPE_UI2:         hr = VarR4FromUI2(*(WORD*)src, d);              break; | 
 |         case DBTYPE_UI4:         hr = VarR4FromUI4(*(DWORD*)src, d);             break; | 
 |         case DBTYPE_I8:          hr = VarR4FromI8(*(LONGLONG*)src, d);           break; | 
 |         case DBTYPE_UI8:         hr = VarR4FromUI8(*(ULONGLONG*)src, d);         break; | 
 |         default: FIXME("Unimplemented conversion %04x -> R4\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |     case DBTYPE_R8: | 
 |     { | 
 |         DOUBLE *d=dst; | 
 |         switch (src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:      *d = 0; hr = S_OK;                               break; | 
 |         case DBTYPE_I1:          hr = VarR8FromI1(*(signed char*)src, d);        break; | 
 |         case DBTYPE_I2:          hr = VarR8FromI2(*(signed short*)src, d);       break; | 
 |         case DBTYPE_I4:          hr = VarR8FromI4(*(signed int*)src, d);         break; | 
 |         case DBTYPE_I8:          hr = VarR8FromI8(*(LONGLONG*)src, d);           break; | 
 |         case DBTYPE_UI1:         hr = VarR8FromUI1(*(BYTE*)src, d);              break; | 
 |         case DBTYPE_UI2:         hr = VarR8FromUI2(*(WORD*)src, d);              break; | 
 |         case DBTYPE_UI4:         hr = VarR8FromUI4(*(DWORD*)src, d);             break; | 
 |         case DBTYPE_UI8:         hr = VarR8FromUI8(*(ULONGLONG*)src, d);         break; | 
 |         case DBTYPE_R4:          hr = VarR8FromR4(*(FLOAT*)src, d);              break; | 
 |         case DBTYPE_R8:          *d = *(DOUBLE*)src; hr = S_OK;                  break; | 
 |         case DBTYPE_CY:          hr = VarR8FromCy(*(CY*)src, d);                 break; | 
 |         case DBTYPE_DATE:        hr = VarR8FromDate(*(DATE*)src, d);             break; | 
 |         case DBTYPE_BSTR:        hr = VarR8FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break; | 
 |         case DBTYPE_BOOL:        hr = VarR8FromBool(*(VARIANT_BOOL*)src, d);     break; | 
 |         case DBTYPE_DECIMAL:     hr = VarR8FromDec((DECIMAL*)src, d);            break; | 
 |         default: FIXME("Unimplemented conversion %04x -> R8\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |     case DBTYPE_BOOL: | 
 |     { | 
 |         VARIANT_BOOL *d=dst; | 
 |         switch (src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:      *d = 0; hr = S_OK;                               break; | 
 |         case DBTYPE_I1:          hr = VarBoolFromI1(*(signed char*)src, d);      break; | 
 |         case DBTYPE_I2:          hr = VarBoolFromI2(*(signed short*)src, d);     break; | 
 |         case DBTYPE_I4:          hr = VarBoolFromI4(*(signed int*)src, d);       break; | 
 |         case DBTYPE_I8:          hr = VarBoolFromI8(*(LONGLONG*)src, d);         break; | 
 |         case DBTYPE_UI1:         hr = VarBoolFromUI1(*(BYTE*)src, d);            break; | 
 |         case DBTYPE_UI2:         hr = VarBoolFromUI2(*(WORD*)src, d);            break; | 
 |         case DBTYPE_UI4:         hr = VarBoolFromUI4(*(DWORD*)src, d);           break; | 
 |         case DBTYPE_UI8:         hr = VarBoolFromUI8(*(ULONGLONG*)src, d);       break; | 
 |         case DBTYPE_R4:          hr = VarBoolFromR4(*(FLOAT*)src, d);            break; | 
 |         case DBTYPE_R8:          hr = VarBoolFromR8(*(DOUBLE*)src, d);           break; | 
 |         case DBTYPE_CY:          hr = VarBoolFromCy(*(CY*)src, d);               break; | 
 |         case DBTYPE_DATE:        hr = VarBoolFromDate(*(DATE*)src, d);           break; | 
 |         case DBTYPE_BSTR:        hr = VarBoolFromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break; | 
 |         case DBTYPE_BOOL:        *d = *(VARIANT_BOOL*)src; hr = S_OK;            break; | 
 |         case DBTYPE_DECIMAL:     hr = VarBoolFromDec((DECIMAL*)src, d);          break; | 
 |         default: FIXME("Unimplemented conversion %04x -> BOOL\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |     case DBTYPE_DATE: | 
 |     { | 
 |         DATE *d=dst; | 
 |         switch (src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:      *d = 0; hr = S_OK;                           	 break; | 
 |         case DBTYPE_I1:          hr = VarDateFromI1(*(signed char*)src, d);      break; | 
 |         case DBTYPE_I2:          hr = VarDateFromI2(*(signed short*)src, d);     break; | 
 |         case DBTYPE_I4:          hr = VarDateFromI4(*(signed int*)src, d);       break; | 
 |         case DBTYPE_I8:          hr = VarDateFromI8(*(LONGLONG*)src, d);         break; | 
 |         case DBTYPE_UI1:         hr = VarDateFromUI1(*(BYTE*)src, d);            break; | 
 |         case DBTYPE_UI2:         hr = VarDateFromUI2(*(WORD*)src, d);            break; | 
 |         case DBTYPE_UI4:         hr = VarDateFromUI4(*(DWORD*)src, d);           break; | 
 |         case DBTYPE_UI8:         hr = VarDateFromUI8(*(ULONGLONG*)src, d);       break; | 
 |         case DBTYPE_R4:          hr = VarDateFromR4(*(FLOAT*)src, d);            break; | 
 |         case DBTYPE_R8:          hr = VarDateFromR8(*(DOUBLE*)src, d);           break; | 
 |         case DBTYPE_CY:          hr = VarDateFromCy(*(CY*)src, d);               break; | 
 |         case DBTYPE_DATE:       *d = *(DATE*)src;      hr = S_OK;                break; | 
 |         case DBTYPE_BSTR:        hr = VarDateFromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break; | 
 |         case DBTYPE_BOOL:        hr = VarDateFromBool(*(VARIANT_BOOL*)src, d);   break; | 
 |         case DBTYPE_DECIMAL:     hr = VarDateFromDec((DECIMAL*)src, d);          break; | 
 |         case DBTYPE_DBTIMESTAMP: | 
 |         { | 
 |             SYSTEMTIME st; | 
 |             DBTIMESTAMP *ts=(DBTIMESTAMP*)src; | 
 |  | 
 |             st.wYear = ts->year; | 
 |             st.wMonth = ts->month; | 
 |             st.wDay = ts->day; | 
 |             st.wHour = ts->hour; | 
 |             st.wMinute = ts->minute; | 
 |             st.wSecond = ts->second; | 
 |             st.wMilliseconds = ts->fraction/1000000; | 
 |             hr = (SystemTimeToVariantTime(&st, d) ? S_OK : E_FAIL); | 
 |             break; | 
 |         } | 
 |         default: FIXME("Unimplemented conversion %04x -> DATE\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |     case DBTYPE_DBTIMESTAMP: | 
 |     { | 
 |         DBTIMESTAMP *d=dst; | 
 |         switch (src_type) | 
 |         { | 
 | 	case DBTYPE_EMPTY:       memset(d, 0, sizeof(DBTIMESTAMP));    hr = S_OK; break; | 
 | 	case DBTYPE_DBTIMESTAMP: memcpy(d, src, sizeof(DBTIMESTAMP));  hr = S_OK; break; | 
 |         case DBTYPE_DATE: | 
 |         { | 
 |             SYSTEMTIME st; | 
 |             hr = (VariantTimeToSystemTime(*(double*)src, &st) ? S_OK : E_FAIL); | 
 |             d->year = st.wYear; | 
 |             d->month = st.wMonth; | 
 |             d->day = st.wDay; | 
 |             d->hour = st.wHour; | 
 |             d->minute = st.wMinute; | 
 |             d->second = st.wSecond; | 
 |             d->fraction = st.wMilliseconds * 1000000; | 
 |             break; | 
 |         } | 
 |         default: FIXME("Unimplemented conversion %04x -> DBTIMESTAMP\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |  | 
 |     case DBTYPE_CY: | 
 |     { | 
 |         CY *d = dst; | 
 |         switch(src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:       d->int64 = 0; hr = S_OK;                              break; | 
 |         case DBTYPE_I2:          hr = VarCyFromI2(*(signed short*)src, d);       break; | 
 |         case DBTYPE_I4:          hr = VarCyFromI4(*(signed int*)src, d);         break; | 
 |         case DBTYPE_R4:          hr = VarCyFromR4(*(FLOAT*)src, d);              break; | 
 |         case DBTYPE_R8:          hr = VarCyFromR8(*(double*)src, d);             break; | 
 |         case DBTYPE_CY:          *d = *(CY*)src; hr = S_OK;                      break; | 
 |         case DBTYPE_DATE:        hr = VarCyFromDate(*(DATE*)src, d);             break; | 
 |         case DBTYPE_BSTR:        hr = VarCyFromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break; | 
 |         case DBTYPE_BOOL:        hr = VarCyFromBool(*(VARIANT_BOOL*)src, d);     break; | 
 |         case DBTYPE_DECIMAL:     hr = VarCyFromDec((DECIMAL*)src, d);            break; | 
 |         case DBTYPE_I1:          hr = VarCyFromI1(*(signed char*)src, d);        break; | 
 |         case DBTYPE_UI1:         hr = VarCyFromUI1(*(BYTE*)src, d);              break; | 
 |         case DBTYPE_UI2:         hr = VarCyFromUI2(*(WORD*)src, d);              break; | 
 |         case DBTYPE_UI4:         hr = VarCyFromUI4(*(DWORD*)src, d);             break; | 
 |         case DBTYPE_I8:          hr = VarCyFromI8(*(LONGLONG*)src, d);           break; | 
 |         case DBTYPE_UI8:         hr = VarCyFromUI8(*(ULONGLONG*)src, d);         break; | 
 |         default: FIXME("Unimplemented conversion %04x -> CY\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |  | 
 |     case DBTYPE_BSTR: | 
 |     { | 
 |         BSTR *d = dst; | 
 |         switch(src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:       *d = SysAllocStringLen(NULL, 0); hr = *d ? S_OK : E_OUTOFMEMORY;      break; | 
 |         case DBTYPE_I2:          hr = VarBstrFromI2(*(signed short*)src, LOCALE_USER_DEFAULT, 0, d);   break; | 
 |         case DBTYPE_I4:          hr = VarBstrFromI4(*(signed int*)src, LOCALE_USER_DEFAULT, 0, d);     break; | 
 |         case DBTYPE_R4:          hr = VarBstrFromR4(*(FLOAT*)src, LOCALE_USER_DEFAULT, 0, d);          break; | 
 |         case DBTYPE_R8:          hr = VarBstrFromR8(*(double*)src, LOCALE_USER_DEFAULT, 0, d);         break; | 
 |         case DBTYPE_CY:          hr = VarBstrFromCy(*(CY*)src, LOCALE_USER_DEFAULT, 0, d);             break; | 
 |         case DBTYPE_DATE:        hr = VarBstrFromDate(*(DATE*)src, LOCALE_USER_DEFAULT, 0, d);         break; | 
 |         case DBTYPE_BSTR:        *d = SysAllocStringLen(*(BSTR*)src, SysStringLen(*(BSTR*)src)); hr = *d ? S_OK : E_OUTOFMEMORY;     break; | 
 |         case DBTYPE_BOOL:        hr = VarBstrFromBool(*(VARIANT_BOOL*)src, LOCALE_USER_DEFAULT, 0, d); break; | 
 |         case DBTYPE_DECIMAL:     hr = VarBstrFromDec((DECIMAL*)src, LOCALE_USER_DEFAULT, 0, d);        break; | 
 |         case DBTYPE_I1:          hr = VarBstrFromI1(*(signed char*)src, LOCALE_USER_DEFAULT, 0, d);    break; | 
 |         case DBTYPE_UI1:         hr = VarBstrFromUI1(*(BYTE*)src, LOCALE_USER_DEFAULT, 0, d);          break; | 
 |         case DBTYPE_UI2:         hr = VarBstrFromUI2(*(WORD*)src, LOCALE_USER_DEFAULT, 0, d);          break; | 
 |         case DBTYPE_UI4:         hr = VarBstrFromUI4(*(DWORD*)src, LOCALE_USER_DEFAULT, 0, d);         break; | 
 |         case DBTYPE_I8:          hr = VarBstrFromI8(*(LONGLONG*)src, LOCALE_USER_DEFAULT, 0, d);       break; | 
 |         case DBTYPE_UI8:         hr = VarBstrFromUI8(*(ULONGLONG*)src, LOCALE_USER_DEFAULT, 0, d);     break; | 
 |         case DBTYPE_GUID: | 
 |         { | 
 |             WCHAR szBuff[39]; | 
 |             const GUID *id = (const GUID *)src; | 
 |             WCHAR format[] = { | 
 |                 '{','%','0','8','X','-','%','0','4','X','-','%','0','4','X','-', | 
 |                 '%','0','2','X','%','0','2','X','-', | 
 |                 '%','0','2','X','%','0','2','X','%','0','2','X','%','0','2','X','%','0','2','X','%','0','2','X','}',0}; | 
 |             wsprintfW(szBuff, format, | 
 |                 id->Data1, id->Data2, id->Data3, | 
 |                 id->Data4[0], id->Data4[1], id->Data4[2], id->Data4[3], | 
 |                 id->Data4[4], id->Data4[5], id->Data4[6], id->Data4[7] ); | 
 |             *d = SysAllocString(szBuff); | 
 |             hr = *d ? S_OK : E_OUTOFMEMORY; | 
 |         } | 
 |         break; | 
 |         case DBTYPE_BYTES: | 
 |         { | 
 |             *d = SysAllocStringLen(NULL, 2 * src_len); | 
 |             if (*d == NULL) | 
 |                 hr = E_OUTOFMEMORY; | 
 |             else | 
 |             { | 
 |                 const char hexchars[] = "0123456789ABCDEF"; | 
 |                 WCHAR *s = *d; | 
 |                 unsigned char *p = src; | 
 |                 while (src_len > 0) | 
 |                 { | 
 |                     *s++ = hexchars[(*p >> 4) & 0x0F]; | 
 |                     *s++ = hexchars[(*p)      & 0x0F]; | 
 |                     src_len--; p++; | 
 |                 } | 
 |                 hr = S_OK; | 
 |             } | 
 |         } | 
 |         break; | 
 |         default: FIXME("Unimplemented conversion %04x -> BSTR\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |  | 
 |     case DBTYPE_UI1: | 
 |     { | 
 |         BYTE *d = dst; | 
 |         switch(src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:       *d = 0; hr = S_OK;                              break; | 
 |         case DBTYPE_I2:          hr = VarUI1FromI2(*(signed short*)src, d);      break; | 
 |         case DBTYPE_I4:          hr = VarUI1FromI4(*(signed int*)src, d);        break; | 
 |         case DBTYPE_R4:          hr = VarUI1FromR4(*(FLOAT*)src, d);             break; | 
 |         case DBTYPE_R8:          hr = VarUI1FromR8(*(double*)src, d);            break; | 
 |         case DBTYPE_CY:          hr = VarUI1FromCy(*(CY*)src, d);                break; | 
 |         case DBTYPE_DATE:        hr = VarUI1FromDate(*(DATE*)src, d);            break; | 
 |         case DBTYPE_BSTR:        hr = VarUI1FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break; | 
 |         case DBTYPE_BOOL:        hr = VarUI1FromBool(*(VARIANT_BOOL*)src, d);    break; | 
 |         case DBTYPE_DECIMAL:     hr = VarUI1FromDec((DECIMAL*)src, d);           break; | 
 |         case DBTYPE_I1:          hr = VarUI1FromI1(*(signed char*)src, d);       break; | 
 |         case DBTYPE_UI1:         *d = *(BYTE*)src; hr = S_OK;                    break; | 
 |         case DBTYPE_UI2:         hr = VarUI1FromUI2(*(WORD*)src, d);             break; | 
 |         case DBTYPE_UI4:         hr = VarUI1FromUI4(*(DWORD*)src, d);            break; | 
 |         case DBTYPE_I8:          hr = VarUI1FromI8(*(LONGLONG*)src, d);          break; | 
 |         case DBTYPE_UI8:         hr = VarUI1FromUI8(*(ULONGLONG*)src, d);        break; | 
 |         default: FIXME("Unimplemented conversion %04x -> UI1\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |  | 
 |     case DBTYPE_UI4: | 
 |     { | 
 |         DWORD *d = dst; | 
 |         switch(src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:       *d = 0; hr = S_OK;                              break; | 
 |         case DBTYPE_I2:          hr = VarUI4FromI2(*(signed short*)src, d);      break; | 
 |         case DBTYPE_I4:          hr = VarUI4FromI4(*(signed int*)src, d);        break; | 
 |         case DBTYPE_R4:          hr = VarUI4FromR4(*(FLOAT*)src, d);             break; | 
 |         case DBTYPE_R8:          hr = VarUI4FromR8(*(double*)src, d);            break; | 
 |         case DBTYPE_CY:          hr = VarUI4FromCy(*(CY*)src, d);                break; | 
 |         case DBTYPE_DATE:        hr = VarUI4FromDate(*(DATE*)src, d);            break; | 
 |         case DBTYPE_BSTR:        hr = VarUI4FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break; | 
 |         case DBTYPE_BOOL:        hr = VarUI4FromBool(*(VARIANT_BOOL*)src, d);    break; | 
 |         case DBTYPE_DECIMAL:     hr = VarUI4FromDec((DECIMAL*)src, d);           break; | 
 |         case DBTYPE_I1:          hr = VarUI4FromI1(*(signed char*)src, d);       break; | 
 |         case DBTYPE_UI1:         hr = VarUI4FromUI1(*(BYTE*)src, d);             break; | 
 |         case DBTYPE_UI2:         hr = VarUI4FromUI2(*(WORD*)src, d);             break; | 
 |         case DBTYPE_UI4:         *d = *(DWORD*)src; hr = S_OK;                   break; | 
 |         case DBTYPE_I8:          hr = VarUI4FromI8(*(LONGLONG*)src, d);          break; | 
 |         case DBTYPE_UI8:         hr = VarUI4FromUI8(*(ULONGLONG*)src, d);        break; | 
 |         default: FIXME("Unimplemented conversion %04x -> UI4\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |  | 
 |     case DBTYPE_UI8: | 
 |     { | 
 |         ULONGLONG *d = dst; | 
 |         switch(src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:       *d = 0; hr = S_OK;                              break; | 
 |         case DBTYPE_I2:          hr = VarUI8FromI2(*(signed short*)src, d);      break; | 
 |         case DBTYPE_I4:          {LONGLONG s = *(signed int*)src; hr = VarUI8FromI8(s, d);        break;} | 
 |         case DBTYPE_R4:          hr = VarUI8FromR4(*(FLOAT*)src, d);             break; | 
 |         case DBTYPE_R8:          hr = VarUI8FromR8(*(double*)src, d);            break; | 
 |         case DBTYPE_CY:          hr = VarUI8FromCy(*(CY*)src, d);                break; | 
 |         case DBTYPE_DATE:        hr = VarUI8FromDate(*(DATE*)src, d);            break; | 
 |         case DBTYPE_BSTR:        hr = VarUI8FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break; | 
 |         case DBTYPE_BOOL:        hr = VarUI8FromBool(*(VARIANT_BOOL*)src, d);    break; | 
 |         case DBTYPE_DECIMAL:     hr = VarUI8FromDec((DECIMAL*)src, d);           break; | 
 |         case DBTYPE_I1:          hr = VarUI8FromI1(*(signed char*)src, d);       break; | 
 |         case DBTYPE_UI1:         hr = VarUI8FromUI1(*(BYTE*)src, d);             break; | 
 |         case DBTYPE_UI2:         hr = VarUI8FromUI2(*(WORD*)src, d);             break; | 
 |         case DBTYPE_UI4:         hr = VarUI8FromUI4(*(DWORD*)src, d);            break; | 
 |         case DBTYPE_I8:          hr = VarUI8FromI8(*(LONGLONG*)src, d);          break; | 
 |         case DBTYPE_UI8:         *d = *(ULONGLONG*)src; hr = S_OK;               break; | 
 |         default: FIXME("Unimplemented conversion %04x -> UI8\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |  | 
 |     case DBTYPE_FILETIME: | 
 |     { | 
 |         FILETIME *d = dst; | 
 |         switch(src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:       d->dwLowDateTime = d->dwHighDateTime = 0; hr = S_OK;    break; | 
 |         case DBTYPE_FILETIME:    *d = *(FILETIME*)src; hr = S_OK;                        break; | 
 |         default: FIXME("Unimplemented conversion %04x -> FILETIME\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |  | 
 |     case DBTYPE_GUID: | 
 |     { | 
 |         GUID *d = dst; | 
 |         switch(src_type) | 
 |         { | 
 |         case DBTYPE_EMPTY:       *d = GUID_NULL; hr = S_OK; break; | 
 |         case DBTYPE_GUID:        *d = *(GUID*)src; hr = S_OK; break; | 
 |         default: FIXME("Unimplemented conversion %04x -> GUID\n", src_type); return E_NOTIMPL; | 
 |         } | 
 |         break; | 
 |     } | 
 |  | 
 |     case DBTYPE_WSTR: | 
 |     { | 
 |         BSTR b; | 
 |         DBLENGTH bstr_len; | 
 |         INT bytes_to_copy; | 
 |         hr = IDataConvert_DataConvert(iface, src_type, DBTYPE_BSTR, src_len, &bstr_len, | 
 |                                       src, &b, sizeof(BSTR), src_status, dst_status, | 
 |                                       precision, scale, flags); | 
 |         if(hr != S_OK) return hr; | 
 |         bstr_len = SysStringLen(b); | 
 |         *dst_len = bstr_len * sizeof(WCHAR); /* Doesn't include size for '\0' */ | 
 |         *dst_status = DBSTATUS_S_OK; | 
 |         bytes_to_copy = min(*dst_len + sizeof(WCHAR), dst_max_len); | 
 |         if(dst) | 
 |         { | 
 |             if(bytes_to_copy >= sizeof(WCHAR)) | 
 |             { | 
 |                 memcpy(dst, b, bytes_to_copy - sizeof(WCHAR)); | 
 |                 *((WCHAR*)dst + bytes_to_copy / sizeof(WCHAR) - 1) = 0; | 
 |                 if(bytes_to_copy < *dst_len + sizeof(WCHAR)) | 
 |                     *dst_status = DBSTATUS_S_TRUNCATED; | 
 |             } | 
 |             else | 
 |             { | 
 |                 *dst_status = DBSTATUS_E_DATAOVERFLOW; | 
 |                 hr = DB_E_ERRORSOCCURRED; | 
 |             } | 
 |         } | 
 |         SysFreeString(b); | 
 |         return hr; | 
 |     } | 
 |     case DBTYPE_STR: | 
 |     { | 
 |         BSTR b; | 
 |         DBLENGTH bstr_len; | 
 |         INT bytes_to_copy; | 
 |         hr = IDataConvert_DataConvert(iface, src_type, DBTYPE_BSTR, src_len, &bstr_len, | 
 |                                       src, &b, sizeof(BSTR), src_status, dst_status, | 
 |                                       precision, scale, flags); | 
 |         if(hr != S_OK) return hr; | 
 |         bstr_len = SysStringLen(b); | 
 |         *dst_len = bstr_len * sizeof(char); /* Doesn't include size for '\0' */ | 
 |         *dst_status = DBSTATUS_S_OK; | 
 |         bytes_to_copy = min(*dst_len + sizeof(char), dst_max_len); | 
 |         if(dst) | 
 |         { | 
 |             if(bytes_to_copy >= sizeof(char)) | 
 |             { | 
 |                 WideCharToMultiByte(CP_ACP, 0, b, bytes_to_copy - sizeof(char), dst, dst_max_len, NULL, NULL); | 
 |                 *((char *)dst + bytes_to_copy / sizeof(char) - 1) = 0; | 
 |                 if(bytes_to_copy < *dst_len + sizeof(char)) | 
 |                     *dst_status = DBSTATUS_S_TRUNCATED; | 
 |             } | 
 |             else | 
 |             { | 
 |                 *dst_status = DBSTATUS_E_DATAOVERFLOW; | 
 |                 hr = DB_E_ERRORSOCCURRED; | 
 |             } | 
 |         } | 
 |         SysFreeString(b); | 
 |         return hr; | 
 |     } | 
 |  | 
 |     case DBTYPE_BYREF | DBTYPE_WSTR: | 
 |     { | 
 |         BSTR b; | 
 |         WCHAR **d = dst; | 
 |         DBLENGTH bstr_len; | 
 |         hr = IDataConvert_DataConvert(iface, src_type, DBTYPE_BSTR, src_len, &bstr_len, | 
 |                                       src, &b, sizeof(BSTR), src_status, dst_status, | 
 |                                       precision, scale, flags); | 
 |         if(hr != S_OK) return hr; | 
 |  | 
 |         bstr_len = SysStringLen(b) * sizeof(WCHAR); | 
 |         *dst_len = bstr_len; /* Doesn't include size for '\0' */ | 
 |  | 
 |         *d = CoTaskMemAlloc(bstr_len + sizeof(WCHAR)); | 
 |         if(*d) memcpy(*d, b, bstr_len + sizeof(WCHAR)); | 
 |         else hr = E_OUTOFMEMORY; | 
 |         SysFreeString(b); | 
 |         return hr; | 
 |     } | 
 |  | 
 |     default: | 
 |         FIXME("Unimplemented conversion %04x -> %04x\n", src_type, dst_type); | 
 |         return E_NOTIMPL; | 
 |  | 
 |     } | 
 |  | 
 |     if(hr == DISP_E_OVERFLOW) | 
 |     { | 
 |         *dst_status = DBSTATUS_E_DATAOVERFLOW; | 
 |         *dst_len = get_length(dst_type); | 
 |         hr = DB_E_ERRORSOCCURRED; | 
 |     } | 
 |     else if(hr == S_OK) | 
 |     { | 
 |         *dst_status = DBSTATUS_S_OK; | 
 |         *dst_len = get_length(dst_type); | 
 |     } | 
 |  | 
 |     return hr; | 
 | } | 
 |  | 
 | static inline WORD get_dbtype_class(DBTYPE type) | 
 | { | 
 |     switch(type) | 
 |     { | 
 |     case DBTYPE_I2: | 
 |     case DBTYPE_R4: | 
 |     case DBTYPE_R8: | 
 |     case DBTYPE_I1: | 
 |     case DBTYPE_UI1: | 
 |     case DBTYPE_UI2: | 
 |         return DBTYPE_I2; | 
 |  | 
 |     case DBTYPE_I4: | 
 |     case DBTYPE_UI4: | 
 |         return DBTYPE_I4; | 
 |  | 
 |     case DBTYPE_I8: | 
 |     case DBTYPE_UI8: | 
 |         return DBTYPE_I8; | 
 |  | 
 |     case DBTYPE_BSTR: | 
 |     case DBTYPE_STR: | 
 |     case DBTYPE_WSTR: | 
 |         return DBTYPE_BSTR; | 
 |  | 
 |     case DBTYPE_DBDATE: | 
 |     case DBTYPE_DBTIME: | 
 |     case DBTYPE_DBTIMESTAMP: | 
 |         return DBTYPE_DBDATE; | 
 |     } | 
 |     return type; | 
 | } | 
 |  | 
 | /* Many src types will convert to this group of dst types */ | 
 | static inline BOOL common_class(WORD dst_class) | 
 | { | 
 |     switch(dst_class) | 
 |     { | 
 |     case DBTYPE_EMPTY: | 
 |     case DBTYPE_NULL: | 
 |     case DBTYPE_I2: | 
 |     case DBTYPE_I4: | 
 |     case DBTYPE_BSTR: | 
 |     case DBTYPE_BOOL: | 
 |     case DBTYPE_VARIANT: | 
 |     case DBTYPE_I8: | 
 |     case DBTYPE_CY: | 
 |     case DBTYPE_DECIMAL: | 
 |     case DBTYPE_NUMERIC: | 
 |         return TRUE; | 
 |     } | 
 |     return FALSE; | 
 | } | 
 |  | 
 | static inline BOOL array_type(DBTYPE type) | 
 | { | 
 |     return (type >= DBTYPE_I2 && type <= DBTYPE_UI4); | 
 | } | 
 |  | 
 | static HRESULT WINAPI convert_CanConvert(IDataConvert* iface, | 
 |                                          DBTYPE src_type, DBTYPE dst_type) | 
 | { | 
 |     convert *This = impl_from_IDataConvert(iface); | 
 |     DBTYPE src_base_type = src_type & 0x1ff; | 
 |     DBTYPE dst_base_type = dst_type & 0x1ff; | 
 |     WORD dst_class = get_dbtype_class(dst_base_type); | 
 |  | 
 |     TRACE("(%p)->(%d, %d)\n", This, src_type, dst_type); | 
 |  | 
 |     if(src_type & DBTYPE_VECTOR || dst_type & DBTYPE_VECTOR) return S_FALSE; | 
 |  | 
 |     if(src_type & DBTYPE_ARRAY) | 
 |     { | 
 |         if(!array_type(src_base_type)) return S_FALSE; | 
 |         if(dst_type & DBTYPE_ARRAY) | 
 |         { | 
 |             if(src_type == dst_type) return S_OK; | 
 |             return S_FALSE; | 
 |         } | 
 |         if(dst_type == DBTYPE_VARIANT) return S_OK; | 
 |         return S_FALSE; | 
 |     } | 
 |  | 
 |     if(dst_type & DBTYPE_ARRAY) | 
 |     { | 
 |         if(!array_type(dst_base_type)) return S_FALSE; | 
 |         if(src_type == DBTYPE_IDISPATCH || src_type == DBTYPE_VARIANT) return S_OK; | 
 |         return S_FALSE; | 
 |     } | 
 |  | 
 |     if(dst_type & DBTYPE_BYREF) | 
 |         if(dst_base_type != DBTYPE_BYTES && dst_base_type != DBTYPE_STR && dst_base_type != DBTYPE_WSTR) | 
 |             return S_FALSE; | 
 |  | 
 |     switch(get_dbtype_class(src_base_type)) | 
 |     { | 
 |     case DBTYPE_EMPTY: | 
 |         if(common_class(dst_class)) return S_OK; | 
 |         switch(dst_class) | 
 |         { | 
 |         case DBTYPE_DATE: | 
 |         case DBTYPE_GUID: | 
 |         case DBTYPE_FILETIME: | 
 |             return S_OK; | 
 |         default: | 
 |             if(dst_base_type == DBTYPE_DBTIMESTAMP) return S_OK; | 
 |             return S_FALSE; | 
 |         } | 
 |  | 
 |     case DBTYPE_NULL: | 
 |         switch(dst_base_type) | 
 |         { | 
 |         case DBTYPE_NULL: | 
 |         case DBTYPE_VARIANT: | 
 |         case DBTYPE_FILETIME: return S_OK; | 
 |         default: return S_FALSE; | 
 |         } | 
 |  | 
 |     case DBTYPE_I4: | 
 |         if(dst_base_type == DBTYPE_BYTES) return S_OK; | 
 |         /* fall through */ | 
 |     case DBTYPE_I2: | 
 |         if(dst_base_type == DBTYPE_DATE) return S_OK; | 
 |         /* fall through */ | 
 |     case DBTYPE_DECIMAL: | 
 |         if(common_class(dst_class)) return S_OK; | 
 |         if(dst_class == DBTYPE_DBDATE) return S_OK; | 
 |         return S_FALSE; | 
 |  | 
 |     case DBTYPE_BOOL: | 
 |         if(dst_base_type == DBTYPE_DATE) return S_OK; | 
 |     case DBTYPE_NUMERIC: | 
 |     case DBTYPE_CY: | 
 |         if(common_class(dst_class)) return S_OK; | 
 |         return S_FALSE; | 
 |  | 
 |     case DBTYPE_I8: | 
 |         if(common_class(dst_class)) return S_OK; | 
 |         switch(dst_base_type) | 
 |         { | 
 |         case DBTYPE_BYTES: | 
 |         case DBTYPE_FILETIME: return S_OK; | 
 |         default: return S_FALSE; | 
 |         } | 
 |  | 
 |     case DBTYPE_DATE: | 
 |         switch(dst_class) | 
 |         { | 
 |         case DBTYPE_EMPTY: | 
 |         case DBTYPE_NULL: | 
 |         case DBTYPE_I2: | 
 |         case DBTYPE_I4: | 
 |         case DBTYPE_BSTR: | 
 |         case DBTYPE_BOOL: | 
 |         case DBTYPE_VARIANT: | 
 |         case DBTYPE_I8: | 
 |         case DBTYPE_DATE: | 
 |         case DBTYPE_DBDATE: | 
 |         case DBTYPE_FILETIME: | 
 |             return S_OK; | 
 |         default: return S_FALSE; | 
 |         } | 
 |  | 
 |     case DBTYPE_IDISPATCH: | 
 |     case DBTYPE_VARIANT: | 
 |         switch(dst_base_type) | 
 |         { | 
 |         case DBTYPE_IDISPATCH: | 
 |         case DBTYPE_ERROR: | 
 |         case DBTYPE_IUNKNOWN: | 
 |             return S_OK; | 
 |         } | 
 |         /* fall through */ | 
 |     case DBTYPE_BSTR: | 
 |         if(common_class(dst_class)) return S_OK; | 
 |         switch(dst_class) | 
 |         { | 
 |         case DBTYPE_DATE: | 
 |         case DBTYPE_GUID: | 
 |         case DBTYPE_BYTES: | 
 |         case DBTYPE_DBDATE: | 
 |         case DBTYPE_FILETIME: | 
 |             return S_OK; | 
 |         default: return S_FALSE; | 
 |         } | 
 |  | 
 |     case DBTYPE_ERROR: | 
 |         switch(dst_base_type) | 
 |         { | 
 |         case DBTYPE_BSTR: | 
 |         case DBTYPE_ERROR: | 
 |         case DBTYPE_VARIANT: | 
 |         case DBTYPE_WSTR: | 
 |             return S_OK; | 
 |         default: return S_FALSE; | 
 |         } | 
 |  | 
 |     case DBTYPE_IUNKNOWN: | 
 |         switch(dst_base_type) | 
 |         { | 
 |         case DBTYPE_EMPTY: | 
 |         case DBTYPE_NULL: | 
 |         case DBTYPE_IDISPATCH: | 
 |         case DBTYPE_VARIANT: | 
 |         case DBTYPE_IUNKNOWN: | 
 |             return S_OK; | 
 |         default: return S_FALSE; | 
 |         } | 
 |  | 
 |     case DBTYPE_BYTES: | 
 |         if(dst_class == DBTYPE_I4 || dst_class == DBTYPE_I8) return S_OK; | 
 |         /* fall through */ | 
 |     case DBTYPE_GUID: | 
 |         switch(dst_class) | 
 |         { | 
 |         case DBTYPE_EMPTY: | 
 |         case DBTYPE_NULL: | 
 |         case DBTYPE_BSTR: | 
 |         case DBTYPE_VARIANT: | 
 |         case DBTYPE_GUID: | 
 |         case DBTYPE_BYTES: | 
 |             return S_OK; | 
 |         default: return S_FALSE; | 
 |         } | 
 |  | 
 |     case DBTYPE_FILETIME: | 
 |         if(dst_class == DBTYPE_I8) return S_OK; | 
 |         /* fall through */ | 
 |     case DBTYPE_DBDATE: | 
 |         switch(dst_class) | 
 |         { | 
 |         case DBTYPE_EMPTY: | 
 |         case DBTYPE_NULL: | 
 |         case DBTYPE_DATE: | 
 |         case DBTYPE_BSTR: | 
 |         case DBTYPE_VARIANT: | 
 |         case DBTYPE_DBDATE: | 
 |         case DBTYPE_FILETIME: | 
 |             return S_OK; | 
 |         default: return S_FALSE; | 
 |         } | 
 |  | 
 |     } | 
 |     return S_FALSE; | 
 | } | 
 |  | 
 | static HRESULT WINAPI convert_GetConversionSize(IDataConvert* iface, | 
 |                                                 DBTYPE wSrcType, DBTYPE wDstType, | 
 |                                                 DBLENGTH *pcbSrcLength, DBLENGTH *pcbDstLength, | 
 |                                                 void *pSrc) | 
 | { | 
 |     convert *This = impl_from_IDataConvert(iface); | 
 |     FIXME("(%p)->(%d, %d, %p, %p, %p): stub\n", This, wSrcType, wDstType, pcbSrcLength, pcbDstLength, pSrc); | 
 |  | 
 |     return E_NOTIMPL; | 
 | } | 
 |  | 
 | static const struct IDataConvertVtbl convert_vtbl = | 
 | { | 
 |     convert_QueryInterface, | 
 |     convert_AddRef, | 
 |     convert_Release, | 
 |     convert_DataConvert, | 
 |     convert_CanConvert, | 
 |     convert_GetConversionSize | 
 | }; | 
 |  | 
 | static HRESULT WINAPI dcinfo_QueryInterface(IDCInfo* iface, REFIID riid, void **obj) | 
 | { | 
 |     convert *This = impl_from_IDCInfo(iface); | 
 |  | 
 |     return IDataConvert_QueryInterface(&This->IDataConvert_iface, riid, obj); | 
 | } | 
 |  | 
 | static ULONG WINAPI dcinfo_AddRef(IDCInfo* iface) | 
 | { | 
 |     convert *This = impl_from_IDCInfo(iface); | 
 |  | 
 |     return IDataConvert_AddRef(&This->IDataConvert_iface); | 
 | } | 
 |  | 
 | static ULONG WINAPI dcinfo_Release(IDCInfo* iface) | 
 | { | 
 |     convert *This = impl_from_IDCInfo(iface); | 
 |  | 
 |     return IDataConvert_Release(&This->IDataConvert_iface); | 
 | } | 
 |  | 
 | static HRESULT WINAPI dcinfo_GetInfo(IDCInfo *iface, ULONG num, DCINFOTYPE types[], DCINFO **info_ptr) | 
 | { | 
 |     convert *This = impl_from_IDCInfo(iface); | 
 |     ULONG i; | 
 |     DCINFO *infos; | 
 |  | 
 |     TRACE("(%p)->(%d, %p, %p)\n", This, num, types, info_ptr); | 
 |  | 
 |     *info_ptr = infos = CoTaskMemAlloc(num * sizeof(*infos)); | 
 |     if(!infos) return E_OUTOFMEMORY; | 
 |  | 
 |     for(i = 0; i < num; i++) | 
 |     { | 
 |         infos[i].eInfoType = types[i]; | 
 |         VariantInit(&infos[i].vData); | 
 |  | 
 |         switch(types[i]) | 
 |         { | 
 |         case DCINFOTYPE_VERSION: | 
 |             V_VT(&infos[i].vData) = VT_UI4; | 
 |             V_UI4(&infos[i].vData) = This->version; | 
 |             break; | 
 |         } | 
 |     } | 
 |  | 
 |     return S_OK; | 
 | } | 
 |  | 
 | static HRESULT WINAPI dcinfo_SetInfo(IDCInfo* iface, ULONG num, DCINFO info[]) | 
 | { | 
 |     convert *This = impl_from_IDCInfo(iface); | 
 |     ULONG i; | 
 |     HRESULT hr = S_OK; | 
 |  | 
 |     TRACE("(%p)->(%d, %p)\n", This, num, info); | 
 |  | 
 |     for(i = 0; i < num; i++) | 
 |     { | 
 |         switch(info[i].eInfoType) | 
 |         { | 
 |         case DCINFOTYPE_VERSION: | 
 |             if(V_VT(&info[i].vData) != VT_UI4) | 
 |             { | 
 |                 FIXME("VERSION with vt %x\n", V_VT(&info[i].vData)); | 
 |                 hr = DB_S_ERRORSOCCURRED; | 
 |                 break; | 
 |             } | 
 |             This->version = V_UI4(&info[i].vData); | 
 |             break; | 
 |  | 
 |         default: | 
 |             FIXME("Unhandled info type %d (vt %x)\n", info[i].eInfoType, V_VT(&info[i].vData)); | 
 |         } | 
 |     } | 
 |     return hr; | 
 | } | 
 |  | 
 | static const struct IDCInfoVtbl dcinfo_vtbl = | 
 | { | 
 |     dcinfo_QueryInterface, | 
 |     dcinfo_AddRef, | 
 |     dcinfo_Release, | 
 |     dcinfo_GetInfo, | 
 |     dcinfo_SetInfo | 
 | }; | 
 |  | 
 | HRESULT create_oledb_convert(IUnknown *outer, void **obj) | 
 | { | 
 |     convert *This; | 
 |  | 
 |     TRACE("(%p, %p)\n", outer, obj); | 
 |  | 
 |     *obj = NULL; | 
 |  | 
 |     if(outer) return CLASS_E_NOAGGREGATION; | 
 |  | 
 |     This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This)); | 
 |     if(!This) return E_OUTOFMEMORY; | 
 |  | 
 |     This->IDataConvert_iface.lpVtbl = &convert_vtbl; | 
 |     This->IDCInfo_iface.lpVtbl = &dcinfo_vtbl; | 
 |     This->ref = 1; | 
 |     This->version = 0x110; | 
 |  | 
 |     *obj = &This->IDataConvert_iface; | 
 |  | 
 |     return S_OK; | 
 | } |