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_UI2:
{
WORD *d = dst;
switch(src_type)
{
case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
case DBTYPE_I2: hr = VarUI2FromI2(*(signed short*)src, d); break;
case DBTYPE_I4: hr = VarUI2FromI4(*(signed int*)src, d); break;
case DBTYPE_R4: hr = VarUI2FromR4(*(FLOAT*)src, d); break;
case DBTYPE_R8: hr = VarUI2FromR8(*(double*)src, d); break;
case DBTYPE_CY: hr = VarUI2FromCy(*(CY*)src, d); break;
case DBTYPE_DATE: hr = VarUI2FromDate(*(DATE*)src, d); break;
case DBTYPE_BSTR: hr = VarUI2FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
case DBTYPE_BOOL: hr = VarUI2FromBool(*(VARIANT_BOOL*)src, d); break;
case DBTYPE_DECIMAL: hr = VarUI2FromDec((DECIMAL*)src, d); break;
case DBTYPE_I1: hr = VarUI2FromI1(*(signed char*)src, d); break;
case DBTYPE_UI1: hr = VarUI2FromUI1(*(BYTE*)src, d); break;
case DBTYPE_UI2: *d = *(WORD*)src; hr = S_OK; break;
case DBTYPE_UI4: hr = VarUI2FromUI4(*(DWORD*)src, d); break;
case DBTYPE_I8: hr = VarUI2FromI8(*(LONGLONG*)src, d); break;
case DBTYPE_UI8: hr = VarUI2FromUI8(*(ULONGLONG*)src, d); break;
default: FIXME("Unimplemented conversion %04x -> UI2\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;
}
STDAPI
VariantChangeType(
VARIANTARG FAR* pvargDest,
VARIANTARG FAR* pvargSrc,
unsigned short wFlags,
VARTYPE vt)
{
VARIANT varTmp;
HRESULT hresult;
VARTYPE vtSrc;
if (pvargDest == NULL || pvargSrc == NULL)
return(E_INVALIDARG);
vtSrc = V_VT(pvargSrc); // get src vartype
hresult = NOERROR; // assume success
// NOTE: all code after this point must go to LError0 upon Error.
// should have validated the destination type at this point (to ensure
// that the below optimized switch statement will work properly).
switch ( VTSW(vtSrc, vt) )
{
case VTSW(VT_BOOL, VT_BOOL):
case VTSW(VT_I2, VT_I2):
case VTSW(VT_I4, VT_I4):
case VTSW(VT_INT, VT_INT):
case VTSW(VT_I8, VT_I8):
case VTSW(VT_R4, VT_R4):
case VTSW(VT_R8, VT_R8):
case VTSW(VT_CY, VT_CY):
case VTSW(VT_DECIMAL, VT_DECIMAL):
case VTSW(VT_I1, VT_I1):
case VTSW(VT_UI1, VT_UI1):
case VTSW(VT_UI2, VT_UI2):
case VTSW(VT_UI4, VT_UI4):
case VTSW(VT_UINT, VT_UINT):
case VTSW(VT_UI8, VT_UI8):
varTmp = *pvargSrc;
break;
case VTSW(VT_EMPTY, VT_BSTR):
hresult = ErrSysAllocString(OASTR(""), &V_BSTR(&varTmp));
break;
case VTSW(VT_BOOL, VT_BSTR):
//fall through to return "0" or "-1"
case VTSW(VT_I2, VT_BSTR):
hresult = VarBstrFromI2(V_I2(pvargSrc), LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_I4, VT_BSTR):
case VTSW(VT_INT, VT_BSTR):
hresult = VarBstrFromI4(V_I4(pvargSrc), LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_I8, VT_BSTR):
hresult = VarBstrFromI8(V_I8(pvargSrc), LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_R4, VT_BSTR):
hresult = VarBstrFromR4(V_R4(pvargSrc), LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_R8, VT_BSTR):
hresult = VarBstrFromR8(V_R8(pvargSrc), LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_CY, VT_BSTR):
hresult = VarBstrFromCy(V_CY(pvargSrc), LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_DECIMAL, VT_BSTR):
hresult = VarBstrFromDec(&pvargSrc->n1.decVal, LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_I1, VT_BSTR):
hresult = VarBstrFromI1(V_I1(pvargSrc), LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_UI1, VT_BSTR):
hresult = VarBstrFromUI1(V_UI1(pvargSrc), LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_UI2, VT_BSTR):
hresult = VarBstrFromUI2(V_UI2(pvargSrc), LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_UI4, VT_BSTR):
case VTSW(VT_UINT, VT_BSTR):
hresult = VarBstrFromUI4(V_UI4(pvargSrc), LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_UI8, VT_BSTR):
hresult = VarBstrFromUI8(V_UI8(pvargSrc), LOCALE_USER_DEFAULT, 0, &V_BSTR(&varTmp));
break;
case VTSW(VT_BSTR, VT_BSTR):
hresult = ErrSysAllocString(V_BSTR(pvargSrc), &V_BSTR(&varTmp));
break;
case VTSW(VT_DATE, VT_BSTR):
_ASSERTE(false);
hresult = RESULT(DISP_E_TYPEMISMATCH);
break;
default:
if (vtSrc >= VT_VARIANT) {
IfFailGo(IsLegalVartype(vtSrc), LError0);
}
// everybody else gets a type mis-match error
_ASSERTE(false);
hresult = RESULT(DISP_E_TYPEMISMATCH);
break;
}
if (FAILED(hresult))
{
goto LError0;
}
// now set the tag in temp variant. Errors after this point have to
// goto LError1 to potentially clear this variant.
V_VT(&varTmp) = vt;
// now that we have succeeded, we can go ahead and destroy our
// destination variant.
if (V_VT(pvargDest) >= VT_BSTR) {
IfFailGo(VariantClear(pvargDest), LError1);
}
// copy in the variant we just created
memcpy(pvargDest, &varTmp, sizeof(VARIANT));
return NOERROR;
LError1:;
VariantClear(&varTmp);
// fall through
LError0:;
return hresult;
}