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oledb32: Implement DataConvert DBTYPE_DBDATE->DBTYPE_VARIANT.
[wine/multimedia.git] / dlls / oledb32 / convert.c
blob19f46f641ac53b8b2528d15663b0f0c9c33ae100
1 /* OLE DB Conversion library
2 *
3 * Copyright 2009 Huw Davies
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
18 */
19
20 #include <stdarg.h>
21
22 #define COBJMACROS
23 #define NONAMELESSUNION
24 #define NONAMELESSSTRUCT
25
26 #include "windef.h"
27 #include "winbase.h"
28 #include "winnls.h"
29 #include "ole2.h"
30 #include "msdadc.h"
31 #include "oledberr.h"
32
33 #include "oledb_private.h"
34
35 #include "wine/debug.h"
36
37 WINE_DEFAULT_DEBUG_CHANNEL(oledb);
38
39 typedef struct
40 {
41 IDataConvert IDataConvert_iface;
42 IDCInfo IDCInfo_iface;
43
44 LONG ref;
45
46 UINT version; /* Set by IDCInfo_SetInfo */
47 } convert;
48
49 static inline convert *impl_from_IDataConvert(IDataConvert *iface)
50 {
51 return CONTAINING_RECORD(iface, convert, IDataConvert_iface);
52 }
53
54 static inline convert *impl_from_IDCInfo(IDCInfo *iface)
55 {
56 return CONTAINING_RECORD(iface, convert, IDCInfo_iface);
57 }
58
59 static HRESULT WINAPI convert_QueryInterface(IDataConvert* iface,
60 REFIID riid,
61 void **obj)
62 {
63 convert *This = impl_from_IDataConvert(iface);
64 TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), obj);
65
66 *obj = NULL;
67
68 if(IsEqualIID(riid, &IID_IUnknown) ||
69 IsEqualIID(riid, &IID_IDataConvert))
70 {
71 *obj = iface;
72 }
73 else if(IsEqualIID(riid, &IID_IDCInfo))
74 {
75 *obj = &This->IDCInfo_iface;
76 }
77 else
78 {
79 FIXME("interface %s not implemented\n", debugstr_guid(riid));
80 return E_NOINTERFACE;
81 }
82
83 IDataConvert_AddRef(iface);
84 return S_OK;
85 }
86
87
88 static ULONG WINAPI convert_AddRef(IDataConvert* iface)
89 {
90 convert *This = impl_from_IDataConvert(iface);
91 TRACE("(%p)\n", This);
92
93 return InterlockedIncrement(&This->ref);
94 }
95
96
97 static ULONG WINAPI convert_Release(IDataConvert* iface)
98 {
99 convert *This = impl_from_IDataConvert(iface);
100 LONG ref;
101
102 TRACE("(%p)\n", This);
103
104 ref = InterlockedDecrement(&This->ref);
105 if(ref == 0)
106 {
107 HeapFree(GetProcessHeap(), 0, This);
108 }
109
110 return ref;
111 }
112
113 static int get_length(DBTYPE type)
114 {
115 switch(type)
116 {
117 case DBTYPE_I1:
118 case DBTYPE_UI1:
119 return 1;
120 case DBTYPE_I2:
121 case DBTYPE_UI2:
122 return 2;
123 case DBTYPE_BOOL:
124 return sizeof(VARIANT_BOOL);
125 case DBTYPE_I4:
126 case DBTYPE_UI4:
127 case DBTYPE_R4:
128 return 4;
129 case DBTYPE_I8:
130 case DBTYPE_UI8:
131 case DBTYPE_R8:
132 case DBTYPE_DATE:
133 return 8;
134 case DBTYPE_DBDATE:
135 return sizeof(DBDATE);
136 case DBTYPE_DBTIMESTAMP:
137 return sizeof(DBTIMESTAMP);
138 case DBTYPE_CY:
139 return sizeof(CY);
140 case DBTYPE_BSTR:
141 return sizeof(BSTR);
142 case DBTYPE_FILETIME:
143 return sizeof(FILETIME);
144 case DBTYPE_GUID:
145 return sizeof(GUID);
146 case DBTYPE_WSTR:
147 case DBTYPE_STR:
148 case DBTYPE_BYREF | DBTYPE_WSTR:
149 return 0;
150 case DBTYPE_VARIANT:
151 return sizeof(VARIANT);
152 default:
153 FIXME("Unhandled type %04x\n", type);
154 return 0;
155 }
156 }
157
158 static HRESULT WINAPI convert_DataConvert(IDataConvert* iface,
159 DBTYPE src_type, DBTYPE dst_type,
160 DBLENGTH src_len, DBLENGTH *dst_len,
161 void *src, void *dst,
162 DBLENGTH dst_max_len,
163 DBSTATUS src_status, DBSTATUS *dst_status,
164 BYTE precision, BYTE scale,
165 DBDATACONVERT flags)
166 {
167 convert *This = impl_from_IDataConvert(iface);
168 DBLENGTH dst_len_loc;
169 DBSTATUS dst_status_loc;
170 VARIANT tmp;
171 HRESULT hr;
172
173 TRACE("(%p)->(%d, %d, %ld, %p, %p, %p, %ld, %d, %p, %d, %d, %x)\n", This,
174 src_type, dst_type, src_len, dst_len, src, dst, dst_max_len,
175 src_status, dst_status, precision, scale, flags);
176
177 if (!dst_len) dst_len = &dst_len_loc;
178 if (!dst_status) dst_status = &dst_status_loc;
179
180 *dst_status = DBSTATUS_E_BADACCESSOR;
181
182 if(IDataConvert_CanConvert(iface, src_type, dst_type) != S_OK)
183 {
184 return DB_E_UNSUPPORTEDCONVERSION;
185 }
186
187 if(src_type == DBTYPE_STR)
188 {
189 BSTR b;
190 DWORD len;
191
192 if(flags & DBDATACONVERT_LENGTHFROMNTS)
193 len = MultiByteToWideChar(CP_ACP, 0, src, -1, NULL, 0) - 1;
194 else
195 len = MultiByteToWideChar(CP_ACP, 0, src, src_len, NULL, 0);
196 b = SysAllocStringLen(NULL, len);
197 if(!b) return E_OUTOFMEMORY;
198 if(flags & DBDATACONVERT_LENGTHFROMNTS)
199 MultiByteToWideChar(CP_ACP, 0, src, -1, b, len + 1);
200 else
201 MultiByteToWideChar(CP_ACP, 0, src, src_len, b, len);
202
203 hr = IDataConvert_DataConvert(iface, DBTYPE_BSTR, dst_type, 0, dst_len,
204 &b, dst, dst_max_len, src_status, dst_status,
205 precision, scale, flags);
206
207 SysFreeString(b);
208 return hr;
209 }
210
211 if(src_type == DBTYPE_WSTR)
212 {
213 BSTR b;
214
215 if(flags & DBDATACONVERT_LENGTHFROMNTS)
216 b = SysAllocString(src);
217 else
218 b = SysAllocStringLen(src, src_len / 2);
219 if(!b) return E_OUTOFMEMORY;
220 hr = IDataConvert_DataConvert(iface, DBTYPE_BSTR, dst_type, 0, dst_len,
221 &b, dst, dst_max_len, src_status, dst_status,
222 precision, scale, flags);
223 SysFreeString(b);
224 return hr;
225 }
226
227 switch(dst_type)
228 {
229 case DBTYPE_I2:
230 {
231 signed short *d = dst;
232 switch(src_type)
233 {
234 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
235 case DBTYPE_I2: *d = *(signed short*)src; hr = S_OK; break;
236 case DBTYPE_I4: hr = VarI2FromI4(*(signed int*)src, d); break;
237 case DBTYPE_R4: hr = VarI2FromR4(*(FLOAT*)src, d); break;
238 case DBTYPE_R8: hr = VarI2FromR8(*(double*)src, d); break;
239 case DBTYPE_CY: hr = VarI2FromCy(*(CY*)src, d); break;
240 case DBTYPE_DATE: hr = VarI2FromDate(*(DATE*)src, d); break;
241 case DBTYPE_BSTR: hr = VarI2FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
242 case DBTYPE_BOOL: hr = VarI2FromBool(*(VARIANT_BOOL*)src, d); break;
243 case DBTYPE_DECIMAL: hr = VarI2FromDec((DECIMAL*)src, d); break;
244 case DBTYPE_I1: hr = VarI2FromI1(*(signed char*)src, d); break;
245 case DBTYPE_UI1: hr = VarI2FromUI1(*(BYTE*)src, d); break;
246 case DBTYPE_UI2: hr = VarI2FromUI2(*(WORD*)src, d); break;
247 case DBTYPE_UI4: hr = VarI2FromUI4(*(DWORD*)src, d); break;
248 case DBTYPE_I8: hr = VarI2FromI8(*(LONGLONG*)src, d); break;
249 case DBTYPE_UI8: hr = VarI2FromUI8(*(ULONGLONG*)src, d); break;
250 case DBTYPE_VARIANT:
251 VariantInit(&tmp);
252 if ((hr = VariantChangeType(&tmp, (VARIANT*)src, 0, VT_I2)) == S_OK)
253 *d = V_I2(&tmp);
254 break;
255 default: FIXME("Unimplemented conversion %04x -> I2\n", src_type); return E_NOTIMPL;
256 }
257 break;
258 }
259
260 case DBTYPE_I4:
261 {
262 signed int *d = dst;
263 switch(src_type)
264 {
265 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
266 case DBTYPE_I2: hr = VarI4FromI2(*(signed short*)src, d); break;
267 case DBTYPE_I4: *d = *(signed int*)src; hr = S_OK; break;
268 case DBTYPE_R4: hr = VarI4FromR4(*(FLOAT*)src, d); break;
269 case DBTYPE_R8: hr = VarI4FromR8(*(double*)src, d); break;
270 case DBTYPE_CY: hr = VarI4FromCy(*(CY*)src, d); break;
271 case DBTYPE_DATE: hr = VarI4FromDate(*(DATE*)src, d); break;
272 case DBTYPE_BSTR: hr = VarI4FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
273 case DBTYPE_BOOL: hr = VarI4FromBool(*(VARIANT_BOOL*)src, d); break;
274 case DBTYPE_DECIMAL: hr = VarI4FromDec((DECIMAL*)src, d); break;
275 case DBTYPE_I1: hr = VarI4FromI1(*(signed char*)src, d); break;
276 case DBTYPE_UI1: hr = VarI4FromUI1(*(BYTE*)src, d); break;
277 case DBTYPE_UI2: hr = VarI4FromUI2(*(WORD*)src, d); break;
278 case DBTYPE_UI4: hr = VarI4FromUI4(*(DWORD*)src, d); break;
279 case DBTYPE_I8: hr = VarI4FromI8(*(LONGLONG*)src, d); break;
280 case DBTYPE_UI8: hr = VarI4FromUI8(*(ULONGLONG*)src, d); break;
281 case DBTYPE_VARIANT:
282 VariantInit(&tmp);
283 if ((hr = VariantChangeType(&tmp, (VARIANT*)src, 0, VT_I4)) == S_OK)
284 *d = V_I4(&tmp);
285 break;
286 default: FIXME("Unimplemented conversion %04x -> I4\n", src_type); return E_NOTIMPL;
287 }
288 break;
289 }
290
291 case DBTYPE_I8:
292 {
293 LONGLONG *d = dst;
294 switch(src_type)
295 {
296 case DBTYPE_BSTR: hr = VarI8FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
297 case DBTYPE_I8: *d = *(LONGLONG*)src; hr = S_OK; break;
298 default: FIXME("Unimplemented conversion %04x -> I8\n", src_type); return E_NOTIMPL;
299 }
300 break;
301 }
302
303 case DBTYPE_R4:
304 {
305 FLOAT *d = dst;
306 switch(src_type)
307 {
308 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
309 case DBTYPE_I2: hr = VarR4FromI2(*(signed short*)src, d); break;
310 case DBTYPE_I4: hr = VarR4FromI4(*(signed int*)src, d); break;
311 case DBTYPE_R4: *d = *(FLOAT*)src; hr = S_OK; break;
312 case DBTYPE_R8: hr = VarR4FromR8(*(double*)src, d); break;
313 case DBTYPE_CY: hr = VarR4FromCy(*(CY*)src, d); break;
314 case DBTYPE_DATE: hr = VarR4FromDate(*(DATE*)src, d); break;
315 case DBTYPE_BSTR: hr = VarR4FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
316 case DBTYPE_BOOL: hr = VarR4FromBool(*(VARIANT_BOOL*)src, d); break;
317 case DBTYPE_DECIMAL: hr = VarR4FromDec((DECIMAL*)src, d); break;
318 case DBTYPE_I1: hr = VarR4FromI1(*(signed char*)src, d); break;
319 case DBTYPE_UI1: hr = VarR4FromUI1(*(BYTE*)src, d); break;
320 case DBTYPE_UI2: hr = VarR4FromUI2(*(WORD*)src, d); break;
321 case DBTYPE_UI4: hr = VarR4FromUI4(*(DWORD*)src, d); break;
322 case DBTYPE_I8: hr = VarR4FromI8(*(LONGLONG*)src, d); break;
323 case DBTYPE_UI8: hr = VarR4FromUI8(*(ULONGLONG*)src, d); break;
324 default: FIXME("Unimplemented conversion %04x -> R4\n", src_type); return E_NOTIMPL;
325 }
326 break;
327 }
328 case DBTYPE_R8:
329 {
330 DOUBLE *d=dst;
331 switch (src_type)
332 {
333 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
334 case DBTYPE_I1: hr = VarR8FromI1(*(signed char*)src, d); break;
335 case DBTYPE_I2: hr = VarR8FromI2(*(signed short*)src, d); break;
336 case DBTYPE_I4: hr = VarR8FromI4(*(signed int*)src, d); break;
337 case DBTYPE_I8: hr = VarR8FromI8(*(LONGLONG*)src, d); break;
338 case DBTYPE_UI1: hr = VarR8FromUI1(*(BYTE*)src, d); break;
339 case DBTYPE_UI2: hr = VarR8FromUI2(*(WORD*)src, d); break;
340 case DBTYPE_UI4: hr = VarR8FromUI4(*(DWORD*)src, d); break;
341 case DBTYPE_UI8: hr = VarR8FromUI8(*(ULONGLONG*)src, d); break;
342 case DBTYPE_R4: hr = VarR8FromR4(*(FLOAT*)src, d); break;
343 case DBTYPE_R8: *d = *(DOUBLE*)src; hr = S_OK; break;
344 case DBTYPE_CY: hr = VarR8FromCy(*(CY*)src, d); break;
345 case DBTYPE_DATE: hr = VarR8FromDate(*(DATE*)src, d); break;
346 case DBTYPE_BSTR: hr = VarR8FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
347 case DBTYPE_BOOL: hr = VarR8FromBool(*(VARIANT_BOOL*)src, d); break;
348 case DBTYPE_DECIMAL: hr = VarR8FromDec((DECIMAL*)src, d); break;
349 default: FIXME("Unimplemented conversion %04x -> R8\n", src_type); return E_NOTIMPL;
350 }
351 break;
352 }
353 case DBTYPE_BOOL:
354 {
355 VARIANT_BOOL *d=dst;
356 switch (src_type)
357 {
358 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
359 case DBTYPE_I1: hr = VarBoolFromI1(*(signed char*)src, d); break;
360 case DBTYPE_I2: hr = VarBoolFromI2(*(signed short*)src, d); break;
361 case DBTYPE_I4: hr = VarBoolFromI4(*(signed int*)src, d); break;
362 case DBTYPE_I8: hr = VarBoolFromI8(*(LONGLONG*)src, d); break;
363 case DBTYPE_UI1: hr = VarBoolFromUI1(*(BYTE*)src, d); break;
364 case DBTYPE_UI2: hr = VarBoolFromUI2(*(WORD*)src, d); break;
365 case DBTYPE_UI4: hr = VarBoolFromUI4(*(DWORD*)src, d); break;
366 case DBTYPE_UI8: hr = VarBoolFromUI8(*(ULONGLONG*)src, d); break;
367 case DBTYPE_R4: hr = VarBoolFromR4(*(FLOAT*)src, d); break;
368 case DBTYPE_R8: hr = VarBoolFromR8(*(DOUBLE*)src, d); break;
369 case DBTYPE_CY: hr = VarBoolFromCy(*(CY*)src, d); break;
370 case DBTYPE_DATE: hr = VarBoolFromDate(*(DATE*)src, d); break;
371 case DBTYPE_BSTR: hr = VarBoolFromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
372 case DBTYPE_BOOL: *d = *(VARIANT_BOOL*)src; hr = S_OK; break;
373 case DBTYPE_DECIMAL: hr = VarBoolFromDec((DECIMAL*)src, d); break;
374 default: FIXME("Unimplemented conversion %04x -> BOOL\n", src_type); return E_NOTIMPL;
375 }
376 break;
377 }
378 case DBTYPE_DATE:
379 {
380 DATE *d=dst;
381 switch (src_type)
382 {
383 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
384 case DBTYPE_I1: hr = VarDateFromI1(*(signed char*)src, d); break;
385 case DBTYPE_I2: hr = VarDateFromI2(*(signed short*)src, d); break;
386 case DBTYPE_I4: hr = VarDateFromI4(*(signed int*)src, d); break;
387 case DBTYPE_I8: hr = VarDateFromI8(*(LONGLONG*)src, d); break;
388 case DBTYPE_UI1: hr = VarDateFromUI1(*(BYTE*)src, d); break;
389 case DBTYPE_UI2: hr = VarDateFromUI2(*(WORD*)src, d); break;
390 case DBTYPE_UI4: hr = VarDateFromUI4(*(DWORD*)src, d); break;
391 case DBTYPE_UI8: hr = VarDateFromUI8(*(ULONGLONG*)src, d); break;
392 case DBTYPE_R4: hr = VarDateFromR4(*(FLOAT*)src, d); break;
393 case DBTYPE_R8: hr = VarDateFromR8(*(DOUBLE*)src, d); break;
394 case DBTYPE_CY: hr = VarDateFromCy(*(CY*)src, d); break;
395 case DBTYPE_DATE: *d = *(DATE*)src; hr = S_OK; break;
396 case DBTYPE_BSTR: hr = VarDateFromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
397 case DBTYPE_BOOL: hr = VarDateFromBool(*(VARIANT_BOOL*)src, d); break;
398 case DBTYPE_DECIMAL: hr = VarDateFromDec((DECIMAL*)src, d); break;
399 case DBTYPE_DBTIMESTAMP:
400 {
401 SYSTEMTIME st;
402 DBTIMESTAMP *ts=(DBTIMESTAMP*)src;
403
404 st.wYear = ts->year;
405 st.wMonth = ts->month;
406 st.wDay = ts->day;
407 st.wHour = ts->hour;
408 st.wMinute = ts->minute;
409 st.wSecond = ts->second;
410 st.wMilliseconds = ts->fraction/1000000;
411 hr = (SystemTimeToVariantTime(&st, d) ? S_OK : E_FAIL);
412 break;
413 }
414 default: FIXME("Unimplemented conversion %04x -> DATE\n", src_type); return E_NOTIMPL;
415 }
416 break;
417 }
418 case DBTYPE_DBDATE:
419 {
420 DBDATE *d=dst;
421 switch (src_type)
422 {
423 case DBTYPE_DBDATE: memcpy(d, src, sizeof(DBDATE)); hr = S_OK; break;
424 default: FIXME("Unimplemented conversion %04x -> DBDATE\n", src_type); return E_NOTIMPL;
425 }
426 break;
427 }
428 case DBTYPE_DBTIMESTAMP:
429 {
430 DBTIMESTAMP *d=dst;
431 switch (src_type)
432 {
433 case DBTYPE_EMPTY: memset(d, 0, sizeof(DBTIMESTAMP)); hr = S_OK; break;
434 case DBTYPE_DBTIMESTAMP: memcpy(d, src, sizeof(DBTIMESTAMP)); hr = S_OK; break;
435 case DBTYPE_DATE:
436 {
437 SYSTEMTIME st;
438 hr = (VariantTimeToSystemTime(*(double*)src, &st) ? S_OK : E_FAIL);
439 d->year = st.wYear;
440 d->month = st.wMonth;
441 d->day = st.wDay;
442 d->hour = st.wHour;
443 d->minute = st.wMinute;
444 d->second = st.wSecond;
445 d->fraction = st.wMilliseconds * 1000000;
446 break;
447 }
448 default: FIXME("Unimplemented conversion %04x -> DBTIMESTAMP\n", src_type); return E_NOTIMPL;
449 }
450 break;
451 }
452
453 case DBTYPE_CY:
454 {
455 CY *d = dst;
456 switch(src_type)
457 {
458 case DBTYPE_EMPTY: d->int64 = 0; hr = S_OK; break;
459 case DBTYPE_I2: hr = VarCyFromI2(*(signed short*)src, d); break;
460 case DBTYPE_I4: hr = VarCyFromI4(*(signed int*)src, d); break;
461 case DBTYPE_R4: hr = VarCyFromR4(*(FLOAT*)src, d); break;
462 case DBTYPE_R8: hr = VarCyFromR8(*(double*)src, d); break;
463 case DBTYPE_CY: *d = *(CY*)src; hr = S_OK; break;
464 case DBTYPE_DATE: hr = VarCyFromDate(*(DATE*)src, d); break;
465 case DBTYPE_BSTR: hr = VarCyFromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
466 case DBTYPE_BOOL: hr = VarCyFromBool(*(VARIANT_BOOL*)src, d); break;
467 case DBTYPE_DECIMAL: hr = VarCyFromDec((DECIMAL*)src, d); break;
468 case DBTYPE_I1: hr = VarCyFromI1(*(signed char*)src, d); break;
469 case DBTYPE_UI1: hr = VarCyFromUI1(*(BYTE*)src, d); break;
470 case DBTYPE_UI2: hr = VarCyFromUI2(*(WORD*)src, d); break;
471 case DBTYPE_UI4: hr = VarCyFromUI4(*(DWORD*)src, d); break;
472 case DBTYPE_I8: hr = VarCyFromI8(*(LONGLONG*)src, d); break;
473 case DBTYPE_UI8: hr = VarCyFromUI8(*(ULONGLONG*)src, d); break;
474 default: FIXME("Unimplemented conversion %04x -> CY\n", src_type); return E_NOTIMPL;
475 }
476 break;
477 }
478
479 case DBTYPE_BSTR:
480 {
481 BSTR *d = dst;
482 switch(src_type)
483 {
484 case DBTYPE_EMPTY: *d = SysAllocStringLen(NULL, 0); hr = *d ? S_OK : E_OUTOFMEMORY; break;
485 case DBTYPE_I2: hr = VarBstrFromI2(*(signed short*)src, LOCALE_USER_DEFAULT, 0, d); break;
486 case DBTYPE_I4: hr = VarBstrFromI4(*(signed int*)src, LOCALE_USER_DEFAULT, 0, d); break;
487 case DBTYPE_R4: hr = VarBstrFromR4(*(FLOAT*)src, LOCALE_USER_DEFAULT, 0, d); break;
488 case DBTYPE_R8: hr = VarBstrFromR8(*(double*)src, LOCALE_USER_DEFAULT, 0, d); break;
489 case DBTYPE_CY: hr = VarBstrFromCy(*(CY*)src, LOCALE_USER_DEFAULT, 0, d); break;
490 case DBTYPE_DATE: hr = VarBstrFromDate(*(DATE*)src, LOCALE_USER_DEFAULT, 0, d); break;
491 case DBTYPE_BSTR: *d = SysAllocStringLen(*(BSTR*)src, SysStringLen(*(BSTR*)src)); hr = *d ? S_OK : E_OUTOFMEMORY; break;
492 case DBTYPE_BOOL: hr = VarBstrFromBool(*(VARIANT_BOOL*)src, LOCALE_USER_DEFAULT, 0, d); break;
493 case DBTYPE_DECIMAL: hr = VarBstrFromDec((DECIMAL*)src, LOCALE_USER_DEFAULT, 0, d); break;
494 case DBTYPE_I1: hr = VarBstrFromI1(*(signed char*)src, LOCALE_USER_DEFAULT, 0, d); break;
495 case DBTYPE_UI1: hr = VarBstrFromUI1(*(BYTE*)src, LOCALE_USER_DEFAULT, 0, d); break;
496 case DBTYPE_UI2: hr = VarBstrFromUI2(*(WORD*)src, LOCALE_USER_DEFAULT, 0, d); break;
497 case DBTYPE_UI4: hr = VarBstrFromUI4(*(DWORD*)src, LOCALE_USER_DEFAULT, 0, d); break;
498 case DBTYPE_I8: hr = VarBstrFromI8(*(LONGLONG*)src, LOCALE_USER_DEFAULT, 0, d); break;
499 case DBTYPE_UI8: hr = VarBstrFromUI8(*(ULONGLONG*)src, LOCALE_USER_DEFAULT, 0, d); break;
500 case DBTYPE_GUID:
501 {
502 WCHAR szBuff[39];
503 const GUID *id = (const GUID *)src;
504 WCHAR format[] = {
505 '{','%','0','8','X','-','%','0','4','X','-','%','0','4','X','-',
506 '%','0','2','X','%','0','2','X','-',
507 '%','0','2','X','%','0','2','X','%','0','2','X','%','0','2','X','%','0','2','X','%','0','2','X','}',0};
508 wsprintfW(szBuff, format,
509 id->Data1, id->Data2, id->Data3,
510 id->Data4[0], id->Data4[1], id->Data4[2], id->Data4[3],
511 id->Data4[4], id->Data4[5], id->Data4[6], id->Data4[7] );
512 *d = SysAllocString(szBuff);
513 hr = *d ? S_OK : E_OUTOFMEMORY;
514 }
515 break;
516 case DBTYPE_BYTES:
517 {
518 *d = SysAllocStringLen(NULL, 2 * src_len);
519 if (*d == NULL)
520 hr = E_OUTOFMEMORY;
521 else
522 {
523 const char hexchars[] = "0123456789ABCDEF";
524 WCHAR *s = *d;
525 unsigned char *p = src;
526 while (src_len > 0)
527 {
528 *s++ = hexchars[(*p >> 4) & 0x0F];
529 *s++ = hexchars[(*p) & 0x0F];
530 src_len--; p++;
531 }
532 hr = S_OK;
533 }
534 }
535 break;
536 case DBTYPE_VARIANT:
537 VariantInit(&tmp);
538 if ((hr = VariantChangeType(&tmp, (VARIANT*)src, 0, VT_BSTR)) == S_OK)
539 *d = V_BSTR(&tmp);
540 break;
541 default: FIXME("Unimplemented conversion %04x -> BSTR\n", src_type); return E_NOTIMPL;
542 }
543 break;
544 }
545
546 case DBTYPE_UI1:
547 {
548 BYTE *d = dst;
549 switch(src_type)
550 {
551 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
552 case DBTYPE_I2: hr = VarUI1FromI2(*(signed short*)src, d); break;
553 case DBTYPE_I4: hr = VarUI1FromI4(*(signed int*)src, d); break;
554 case DBTYPE_R4: hr = VarUI1FromR4(*(FLOAT*)src, d); break;
555 case DBTYPE_R8: hr = VarUI1FromR8(*(double*)src, d); break;
556 case DBTYPE_CY: hr = VarUI1FromCy(*(CY*)src, d); break;
557 case DBTYPE_DATE: hr = VarUI1FromDate(*(DATE*)src, d); break;
558 case DBTYPE_BSTR: hr = VarUI1FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
559 case DBTYPE_BOOL: hr = VarUI1FromBool(*(VARIANT_BOOL*)src, d); break;
560 case DBTYPE_DECIMAL: hr = VarUI1FromDec((DECIMAL*)src, d); break;
561 case DBTYPE_I1: hr = VarUI1FromI1(*(signed char*)src, d); break;
562 case DBTYPE_UI1: *d = *(BYTE*)src; hr = S_OK; break;
563 case DBTYPE_UI2: hr = VarUI1FromUI2(*(WORD*)src, d); break;
564 case DBTYPE_UI4: hr = VarUI1FromUI4(*(DWORD*)src, d); break;
565 case DBTYPE_I8: hr = VarUI1FromI8(*(LONGLONG*)src, d); break;
566 case DBTYPE_UI8: hr = VarUI1FromUI8(*(ULONGLONG*)src, d); break;
567 default: FIXME("Unimplemented conversion %04x -> UI1\n", src_type); return E_NOTIMPL;
568 }
569 break;
570 }
571 case DBTYPE_UI2:
572 {
573 WORD *d = dst;
574 switch(src_type)
575 {
576 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
577 case DBTYPE_I2: hr = VarUI2FromI2(*(signed short*)src, d); break;
578 case DBTYPE_I4: hr = VarUI2FromI4(*(signed int*)src, d); break;
579 case DBTYPE_R4: hr = VarUI2FromR4(*(FLOAT*)src, d); break;
580 case DBTYPE_R8: hr = VarUI2FromR8(*(double*)src, d); break;
581 case DBTYPE_CY: hr = VarUI2FromCy(*(CY*)src, d); break;
582 case DBTYPE_DATE: hr = VarUI2FromDate(*(DATE*)src, d); break;
583 case DBTYPE_BSTR: hr = VarUI2FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
584 case DBTYPE_BOOL: hr = VarUI2FromBool(*(VARIANT_BOOL*)src, d); break;
585 case DBTYPE_DECIMAL: hr = VarUI2FromDec((DECIMAL*)src, d); break;
586 case DBTYPE_I1: hr = VarUI2FromI1(*(signed char*)src, d); break;
587 case DBTYPE_UI1: hr = VarUI2FromUI1(*(BYTE*)src, d); break;
588 case DBTYPE_UI2: *d = *(WORD*)src; hr = S_OK; break;
589 case DBTYPE_UI4: hr = VarUI2FromUI4(*(DWORD*)src, d); break;
590 case DBTYPE_I8: hr = VarUI2FromI8(*(LONGLONG*)src, d); break;
591 case DBTYPE_UI8: hr = VarUI2FromUI8(*(ULONGLONG*)src, d); break;
592 default: FIXME("Unimplemented conversion %04x -> UI2\n", src_type); return E_NOTIMPL;
593 }
594 break;
595 }
596
597 case DBTYPE_UI4:
598 {
599 DWORD *d = dst;
600 switch(src_type)
601 {
602 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
603 case DBTYPE_I2: hr = VarUI4FromI2(*(signed short*)src, d); break;
604 case DBTYPE_I4: hr = VarUI4FromI4(*(signed int*)src, d); break;
605 case DBTYPE_R4: hr = VarUI4FromR4(*(FLOAT*)src, d); break;
606 case DBTYPE_R8: hr = VarUI4FromR8(*(double*)src, d); break;
607 case DBTYPE_CY: hr = VarUI4FromCy(*(CY*)src, d); break;
608 case DBTYPE_DATE: hr = VarUI4FromDate(*(DATE*)src, d); break;
609 case DBTYPE_BSTR: hr = VarUI4FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
610 case DBTYPE_BOOL: hr = VarUI4FromBool(*(VARIANT_BOOL*)src, d); break;
611 case DBTYPE_DECIMAL: hr = VarUI4FromDec((DECIMAL*)src, d); break;
612 case DBTYPE_I1: hr = VarUI4FromI1(*(signed char*)src, d); break;
613 case DBTYPE_UI1: hr = VarUI4FromUI1(*(BYTE*)src, d); break;
614 case DBTYPE_UI2: hr = VarUI4FromUI2(*(WORD*)src, d); break;
615 case DBTYPE_UI4: *d = *(DWORD*)src; hr = S_OK; break;
616 case DBTYPE_I8: hr = VarUI4FromI8(*(LONGLONG*)src, d); break;
617 case DBTYPE_UI8: hr = VarUI4FromUI8(*(ULONGLONG*)src, d); break;
618 case DBTYPE_VARIANT:
619 VariantInit(&tmp);
620 if ((hr = VariantChangeType(&tmp, (VARIANT*)src, 0, VT_UI4)) == S_OK)
621 *d = V_UI4(&tmp);
622 break;
623 default: FIXME("Unimplemented conversion %04x -> UI4\n", src_type); return E_NOTIMPL;
624 }
625 break;
626 }
627
628 case DBTYPE_UI8:
629 {
630 ULONGLONG *d = dst;
631 switch(src_type)
632 {
633 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
634 case DBTYPE_I2: hr = VarUI8FromI2(*(signed short*)src, d); break;
635 case DBTYPE_I4: {LONGLONG s = *(signed int*)src; hr = VarUI8FromI8(s, d); break;}
636 case DBTYPE_R4: hr = VarUI8FromR4(*(FLOAT*)src, d); break;
637 case DBTYPE_R8: hr = VarUI8FromR8(*(double*)src, d); break;
638 case DBTYPE_CY: hr = VarUI8FromCy(*(CY*)src, d); break;
639 case DBTYPE_DATE: hr = VarUI8FromDate(*(DATE*)src, d); break;
640 case DBTYPE_BSTR: hr = VarUI8FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
641 case DBTYPE_BOOL: hr = VarUI8FromBool(*(VARIANT_BOOL*)src, d); break;
642 case DBTYPE_DECIMAL: hr = VarUI8FromDec((DECIMAL*)src, d); break;
643 case DBTYPE_I1: hr = VarUI8FromI1(*(signed char*)src, d); break;
644 case DBTYPE_UI1: hr = VarUI8FromUI1(*(BYTE*)src, d); break;
645 case DBTYPE_UI2: hr = VarUI8FromUI2(*(WORD*)src, d); break;
646 case DBTYPE_UI4: hr = VarUI8FromUI4(*(DWORD*)src, d); break;
647 case DBTYPE_I8: hr = VarUI8FromI8(*(LONGLONG*)src, d); break;
648 case DBTYPE_UI8: *d = *(ULONGLONG*)src; hr = S_OK; break;
649 default: FIXME("Unimplemented conversion %04x -> UI8\n", src_type); return E_NOTIMPL;
650 }
651 break;
652 }
653
654 case DBTYPE_FILETIME:
655 {
656 FILETIME *d = dst;
657 switch(src_type)
658 {
659 case DBTYPE_EMPTY: d->dwLowDateTime = d->dwHighDateTime = 0; hr = S_OK; break;
660 case DBTYPE_FILETIME: *d = *(FILETIME*)src; hr = S_OK; break;
661 default: FIXME("Unimplemented conversion %04x -> FILETIME\n", src_type); return E_NOTIMPL;
662 }
663 break;
664 }
665
666 case DBTYPE_GUID:
667 {
668 GUID *d = dst;
669 switch(src_type)
670 {
671 case DBTYPE_EMPTY: *d = GUID_NULL; hr = S_OK; break;
672 case DBTYPE_GUID: *d = *(GUID*)src; hr = S_OK; break;
673 default: FIXME("Unimplemented conversion %04x -> GUID\n", src_type); return E_NOTIMPL;
674 }
675 break;
676 }
677
678 case DBTYPE_WSTR:
679 {
680 BSTR b;
681 DBLENGTH bstr_len;
682 INT bytes_to_copy;
683 hr = IDataConvert_DataConvert(iface, src_type, DBTYPE_BSTR, src_len, &bstr_len,
684 src, &b, sizeof(BSTR), src_status, dst_status,
685 precision, scale, flags);
686 if(hr != S_OK) return hr;
687 bstr_len = SysStringLen(b);
688 *dst_len = bstr_len * sizeof(WCHAR); /* Doesn't include size for '\0' */
689 *dst_status = DBSTATUS_S_OK;
690 bytes_to_copy = min(*dst_len + sizeof(WCHAR), dst_max_len);
691 if(dst)
692 {
693 if(bytes_to_copy >= sizeof(WCHAR))
694 {
695 memcpy(dst, b, bytes_to_copy - sizeof(WCHAR));
696 *((WCHAR*)dst + bytes_to_copy / sizeof(WCHAR) - 1) = 0;
697 if(bytes_to_copy < *dst_len + sizeof(WCHAR))
698 *dst_status = DBSTATUS_S_TRUNCATED;
699 }
700 else
701 {
702 *dst_status = DBSTATUS_E_DATAOVERFLOW;
703 hr = DB_E_ERRORSOCCURRED;
704 }
705 }
706 SysFreeString(b);
707 return hr;
708 }
709 case DBTYPE_STR:
710 {
711 BSTR b;
712 DBLENGTH bstr_len;
713 INT bytes_to_copy;
714 hr = IDataConvert_DataConvert(iface, src_type, DBTYPE_BSTR, src_len, &bstr_len,
715 src, &b, sizeof(BSTR), src_status, dst_status,
716 precision, scale, flags);
717 if(hr != S_OK) return hr;
718 bstr_len = SysStringLen(b);
719 *dst_len = bstr_len * sizeof(char); /* Doesn't include size for '\0' */
720 *dst_status = DBSTATUS_S_OK;
721 bytes_to_copy = min(*dst_len + sizeof(char), dst_max_len);
722 if(dst)
723 {
724 if(bytes_to_copy >= sizeof(char))
725 {
726 WideCharToMultiByte(CP_ACP, 0, b, bytes_to_copy - sizeof(char), dst, dst_max_len, NULL, NULL);
727 *((char *)dst + bytes_to_copy / sizeof(char) - 1) = 0;
728 if(bytes_to_copy < *dst_len + sizeof(char))
729 *dst_status = DBSTATUS_S_TRUNCATED;
730 }
731 else
732 {
733 *dst_status = DBSTATUS_E_DATAOVERFLOW;
734 hr = DB_E_ERRORSOCCURRED;
735 }
736 }
737 SysFreeString(b);
738 return hr;
739 }
740
741 case DBTYPE_BYREF | DBTYPE_WSTR:
742 {
743 BSTR b;
744 WCHAR **d = dst;
745 DBLENGTH bstr_len;
746 hr = IDataConvert_DataConvert(iface, src_type, DBTYPE_BSTR, src_len, &bstr_len,
747 src, &b, sizeof(BSTR), src_status, dst_status,
748 precision, scale, flags);
749 if(hr != S_OK) return hr;
750
751 bstr_len = SysStringLen(b) * sizeof(WCHAR);
752 *dst_len = bstr_len; /* Doesn't include size for '\0' */
753
754 *d = CoTaskMemAlloc(bstr_len + sizeof(WCHAR));
755 if(*d) memcpy(*d, b, bstr_len + sizeof(WCHAR));
756 else hr = E_OUTOFMEMORY;
757 SysFreeString(b);
758 return hr;
759 }
760
761 case DBTYPE_VARIANT:
762 {
763 VARIANT *v = dst;
764
765 switch(src_type)
766 {
767 case DBTYPE_BOOL:
768 V_VT(v) = VT_BOOL;
769 V_BOOL(v) = *(VARIANT_BOOL*)src;
770 hr = S_OK;
771 break;
772 case DBTYPE_I4:
773 V_VT(v) = VT_I4;
774 V_I4(v) = *(signed int*)src;
775 hr = S_OK;
776 break;
777 case DBTYPE_I8:
778 V_VT(v) = VT_DECIMAL;
779 hr = VarDecFromI8( *(LONGLONG*)src, &V_DECIMAL(v));
780 break;
781 case DBTYPE_R8:
782 V_VT(v) = VT_R8;
783 V_R8(v) = *(double*)src;
784 hr = S_OK;
785 break;
786 case DBTYPE_BSTR:
787 {
788 BSTR s = *(WCHAR**)src;
789 TRACE("%s\n", debugstr_w(s));
790 V_VT(v) = VT_BSTR;
791 V_BSTR(v) = SysAllocString(s);
792 hr = V_BSTR(v) ? S_OK : E_OUTOFMEMORY;
793 break;
794 }
795 case DBTYPE_DATE:
796 V_VT(v) = VT_DATE;
797 V_DATE(v) = *(DATE*)src;
798 hr = S_OK;
799 break;
800 case DBTYPE_DBDATE:
801 {
802 SYSTEMTIME st;
803 DBDATE *ts=(DBDATE*)src;
804
805 V_VT(v) = VT_DATE;
806
807 st.wYear = ts->year;
808 st.wMonth = ts->month;
809 st.wDay = ts->day;
810 st.wHour = 0;
811 st.wMinute = 0;
812 st.wSecond = 0;
813 st.wMilliseconds = 0;
814 hr = (SystemTimeToVariantTime(&st, &V_DATE(v)) ? S_OK : E_FAIL);
815 break;
816 }
817 case DBTYPE_DBTIMESTAMP:
818 {
819 SYSTEMTIME st;
820 DBTIMESTAMP *ts = (DBTIMESTAMP *)src;
821
822 V_VT(v) = VT_DATE;
823
824 st.wYear = ts->year;
825 st.wMonth = ts->month;
826 st.wDay = ts->day;
827 st.wHour = ts->hour;
828 st.wMinute = ts->minute;
829 st.wSecond = ts->second;
830 st.wMilliseconds = ts->fraction/1000000;
831 hr = SystemTimeToVariantTime(&st, &V_DATE(v)) ? S_OK : E_FAIL;
832 break;
833 }
834 case DBTYPE_CY:
835 V_VT(v) = VT_CY;
836 V_CY(v) = *(CY*)src;
837 hr = S_OK;
838 break;
839 case DBTYPE_BYTES:
840 {
841 LONG i;
842 LONG size;
843 SAFEARRAY *psa = NULL;
844 SAFEARRAYBOUND rgsabound[1];
845 unsigned char *p = src;
846
847 size = min(src_len, dst_max_len);
848
849 rgsabound[0].lLbound = 0;
850 rgsabound[0].cElements = size;
851
852 psa = SafeArrayCreate(VT_UI1,1,rgsabound);
853 for(i =0; i < size; i++,p++)
854 {
855 hr = SafeArrayPutElement(psa, &i, &p);
856 if(FAILED(hr))
857 return hr;
858 }
859
860 V_VT(v) = VT_ARRAY|VT_UI1;
861 V_ARRAY(v) = psa;
862 hr = S_OK;
863 break;
864 }
865 default: FIXME("Unimplemented conversion %04x -> VARIANT\n", src_type); return E_NOTIMPL;
866 }
867 break;
868 }
869 case DBTYPE_BYTES:
870 {
871 BYTE *d = dst;
872
873 switch(src_type)
874 {
875 case DBTYPE_BYTES:
876 if( src_len > dst_max_len)
877 *dst_status = DBSTATUS_S_TRUNCATED;
878 else
879 *dst_status = DBSTATUS_S_OK;
880
881 *dst_len = src_len;
882 memcpy(d, src, min(src_len, dst_max_len));
883
884 return S_OK;
885 default: FIXME("Unimplemented conversion %04x -> DBTYPE_BYTES\n", src_type); return E_NOTIMPL;
886 }
887 break;
888 }
889
890 default:
891 FIXME("Unimplemented conversion %04x -> %04x\n", src_type, dst_type);
892 return E_NOTIMPL;
893 }
894
895 if(hr == DISP_E_OVERFLOW)
896 {
897 *dst_status = DBSTATUS_E_DATAOVERFLOW;
898 *dst_len = get_length(dst_type);
899 hr = DB_E_ERRORSOCCURRED;
900 }
901 else if(hr == S_OK)
902 {
903 *dst_status = DBSTATUS_S_OK;
904 *dst_len = get_length(dst_type);
905 }
906
907 return hr;
908 }
909
910 static inline WORD get_dbtype_class(DBTYPE type)
911 {
912 switch(type)
913 {
914 case DBTYPE_I2:
915 case DBTYPE_R4:
916 case DBTYPE_R8:
917 case DBTYPE_I1:
918 case DBTYPE_UI1:
919 case DBTYPE_UI2:
920 return DBTYPE_I2;
921
922 case DBTYPE_I4:
923 case DBTYPE_UI4:
924 return DBTYPE_I4;
925
926 case DBTYPE_I8:
927 case DBTYPE_UI8:
928 return DBTYPE_I8;
929
930 case DBTYPE_BSTR:
931 case DBTYPE_STR:
932 case DBTYPE_WSTR:
933 return DBTYPE_BSTR;
934
935 case DBTYPE_DBDATE:
936 case DBTYPE_DBTIME:
937 case DBTYPE_DBTIMESTAMP:
938 return DBTYPE_DBDATE;
939 }
940 return type;
941 }
942
943 /* Many src types will convert to this group of dst types */
944 static inline BOOL common_class(WORD dst_class)
945 {
946 switch(dst_class)
947 {
948 case DBTYPE_EMPTY:
949 case DBTYPE_NULL:
950 case DBTYPE_I2:
951 case DBTYPE_I4:
952 case DBTYPE_BSTR:
953 case DBTYPE_BOOL:
954 case DBTYPE_VARIANT:
955 case DBTYPE_I8:
956 case DBTYPE_CY:
957 case DBTYPE_DECIMAL:
958 case DBTYPE_NUMERIC:
959 return TRUE;
960 }
961 return FALSE;
962 }
963
964 static inline BOOL array_type(DBTYPE type)
965 {
966 return (type >= DBTYPE_I2 && type <= DBTYPE_UI4);
967 }
968
969 static HRESULT WINAPI convert_CanConvert(IDataConvert* iface,
970 DBTYPE src_type, DBTYPE dst_type)
971 {
972 convert *This = impl_from_IDataConvert(iface);
973 DBTYPE src_base_type = src_type & 0x1ff;
974 DBTYPE dst_base_type = dst_type & 0x1ff;
975 WORD dst_class = get_dbtype_class(dst_base_type);
976
977 TRACE("(%p)->(%d, %d)\n", This, src_type, dst_type);
978
979 if(src_type & DBTYPE_VECTOR || dst_type & DBTYPE_VECTOR) return S_FALSE;
980
981 if(src_type & DBTYPE_ARRAY)
982 {
983 if(!array_type(src_base_type)) return S_FALSE;
984 if(dst_type & DBTYPE_ARRAY)
985 {
986 if(src_type == dst_type) return S_OK;
987 return S_FALSE;
988 }
989 if(dst_type == DBTYPE_VARIANT) return S_OK;
990 return S_FALSE;
991 }
992
993 if(dst_type & DBTYPE_ARRAY)
994 {
995 if(!array_type(dst_base_type)) return S_FALSE;
996 if(src_type == DBTYPE_IDISPATCH || src_type == DBTYPE_VARIANT) return S_OK;
997 return S_FALSE;
998 }
999
1000 if(dst_type & DBTYPE_BYREF)
1001 if(dst_base_type != DBTYPE_BYTES && dst_base_type != DBTYPE_STR && dst_base_type != DBTYPE_WSTR)
1002 return S_FALSE;
1003
1004 switch(get_dbtype_class(src_base_type))
1005 {
1006 case DBTYPE_EMPTY:
1007 if(common_class(dst_class)) return S_OK;
1008 switch(dst_class)
1009 {
1010 case DBTYPE_DATE:
1011 case DBTYPE_GUID:
1012 case DBTYPE_FILETIME:
1013 return S_OK;
1014 default:
1015 if(dst_base_type == DBTYPE_DBTIMESTAMP) return S_OK;
1016 return S_FALSE;
1017 }
1018
1019 case DBTYPE_NULL:
1020 switch(dst_base_type)
1021 {
1022 case DBTYPE_NULL:
1023 case DBTYPE_VARIANT:
1024 case DBTYPE_FILETIME: return S_OK;
1025 default: return S_FALSE;
1026 }
1027
1028 case DBTYPE_I4:
1029 if(dst_base_type == DBTYPE_BYTES) return S_OK;
1030 /* fall through */
1031 case DBTYPE_I2:
1032 if(dst_base_type == DBTYPE_DATE) return S_OK;
1033 /* fall through */
1034 case DBTYPE_DECIMAL:
1035 if(common_class(dst_class)) return S_OK;
1036 if(dst_class == DBTYPE_DBDATE) return S_OK;
1037 return S_FALSE;
1038
1039 case DBTYPE_BOOL:
1040 if(dst_base_type == DBTYPE_DATE) return S_OK;
1041 /* fall through */
1042 case DBTYPE_NUMERIC:
1043 case DBTYPE_CY:
1044 if(common_class(dst_class)) return S_OK;
1045 return S_FALSE;
1046
1047 case DBTYPE_I8:
1048 if(common_class(dst_class)) return S_OK;
1049 switch(dst_base_type)
1050 {
1051 case DBTYPE_BYTES:
1052 case DBTYPE_FILETIME: return S_OK;
1053 default: return S_FALSE;
1054 }
1055
1056 case DBTYPE_DATE:
1057 switch(dst_class)
1058 {
1059 case DBTYPE_EMPTY:
1060 case DBTYPE_NULL:
1061 case DBTYPE_I2:
1062 case DBTYPE_I4:
1063 case DBTYPE_BSTR:
1064 case DBTYPE_BOOL:
1065 case DBTYPE_VARIANT:
1066 case DBTYPE_I8:
1067 case DBTYPE_DATE:
1068 case DBTYPE_DBDATE:
1069 case DBTYPE_FILETIME:
1070 return S_OK;
1071 default: return S_FALSE;
1072 }
1073
1074 case DBTYPE_IDISPATCH:
1075 case DBTYPE_VARIANT:
1076 switch(dst_base_type)
1077 {
1078 case DBTYPE_IDISPATCH:
1079 case DBTYPE_ERROR:
1080 case DBTYPE_IUNKNOWN:
1081 return S_OK;
1082 }
1083 /* fall through */
1084 case DBTYPE_BSTR:
1085 if(common_class(dst_class)) return S_OK;
1086 switch(dst_class)
1087 {
1088 case DBTYPE_DATE:
1089 case DBTYPE_GUID:
1090 case DBTYPE_BYTES:
1091 case DBTYPE_DBDATE:
1092 case DBTYPE_FILETIME:
1093 return S_OK;
1094 default: return S_FALSE;
1095 }
1096
1097 case DBTYPE_ERROR:
1098 switch(dst_base_type)
1099 {
1100 case DBTYPE_BSTR:
1101 case DBTYPE_ERROR:
1102 case DBTYPE_VARIANT:
1103 case DBTYPE_WSTR:
1104 return S_OK;
1105 default: return S_FALSE;
1106 }
1107
1108 case DBTYPE_IUNKNOWN:
1109 switch(dst_base_type)
1110 {
1111 case DBTYPE_EMPTY:
1112 case DBTYPE_NULL:
1113 case DBTYPE_IDISPATCH:
1114 case DBTYPE_VARIANT:
1115 case DBTYPE_IUNKNOWN:
1116 return S_OK;
1117 default: return S_FALSE;
1118 }
1119
1120 case DBTYPE_BYTES:
1121 if(dst_class == DBTYPE_I4 || dst_class == DBTYPE_I8) return S_OK;
1122 /* fall through */
1123 case DBTYPE_GUID:
1124 switch(dst_class)
1125 {
1126 case DBTYPE_EMPTY:
1127 case DBTYPE_NULL:
1128 case DBTYPE_BSTR:
1129 case DBTYPE_VARIANT:
1130 case DBTYPE_GUID:
1131 case DBTYPE_BYTES:
1132 return S_OK;
1133 default: return S_FALSE;
1134 }
1135
1136 case DBTYPE_FILETIME:
1137 if(dst_class == DBTYPE_I8) return S_OK;
1138 /* fall through */
1139 case DBTYPE_DBDATE:
1140 switch(dst_class)
1141 {
1142 case DBTYPE_EMPTY:
1143 case DBTYPE_NULL:
1144 case DBTYPE_DATE:
1145 case DBTYPE_BSTR:
1146 case DBTYPE_VARIANT:
1147 case DBTYPE_DBDATE:
1148 case DBTYPE_FILETIME:
1149 return S_OK;
1150 default: return S_FALSE;
1151 }
1152
1153 }
1154 return S_FALSE;
1155 }
1156
1157 static HRESULT WINAPI convert_GetConversionSize(IDataConvert* iface,
1158 DBTYPE src_type, DBTYPE dst_type,
1159 DBLENGTH *src_len, DBLENGTH *dst_len,
1160 void *src)
1161 {
1162 convert *This = impl_from_IDataConvert(iface);
1163 HRESULT hr;
1164
1165 TRACE("(%p)->(%d, %d, %p, %p, %p)\n", This, src_type, dst_type, src_len, dst_len, src);
1166
1167 hr = IDataConvert_CanConvert(iface, src_type, dst_type);
1168 if (hr != S_OK)
1169 return DB_E_UNSUPPORTEDCONVERSION;
1170
1171 if (!dst_len)
1172 return E_INVALIDARG;
1173
1174 /* for some types we don't need to look into source data */
1175 if ((*dst_len = get_length(dst_type)))
1176 return S_OK;
1177
1178 switch (dst_type)
1179 {
1180 case DBTYPE_STR:
1181 {
1182 switch (src_type)
1183 {
1184 case DBTYPE_VARIANT:
1185 {
1186 VARIANT v;
1187
1188 VariantInit(&v);
1189 if ((hr = VariantChangeType(&v, (VARIANT*)src, 0, VT_BSTR)) == S_OK)
1190 {
1191 *dst_len = WideCharToMultiByte(CP_ACP, 0, V_BSTR(&v), -1, NULL, 0, NULL, NULL);
1192 VariantClear(&v);
1193 }
1194 else
1195 return hr;
1196 }
1197 break;
1198 default:
1199 FIXME("unimplemented for %04x -> DBTYPE_STR\n", src_type);
1200 return E_NOTIMPL;
1201 }
1202 }
1203 break;
1204 case DBTYPE_WSTR:
1205 {
1206 switch (src_type)
1207 {
1208 case DBTYPE_VARIANT:
1209 {
1210 VARIANT v;
1211
1212 VariantInit(&v);
1213 if ((hr = VariantChangeType(&v, (VARIANT*)src, 0, VT_BSTR)) == S_OK)
1214 {
1215 *dst_len = (SysStringLen(V_BSTR(&v)) + 1) * sizeof(WCHAR);
1216 VariantClear(&v);
1217 }
1218 else
1219 return hr;
1220 }
1221 break;
1222 case DBTYPE_STR:
1223 if(src_len)
1224 *dst_len = (*src_len + 1) * sizeof(WCHAR);
1225 else
1226 *dst_len = (strlen(src) + 1) * sizeof(WCHAR);
1227 break;
1228 case DBTYPE_WSTR:
1229 if(src_len)
1230 *dst_len = (*src_len) + sizeof(WCHAR);
1231 else
1232 *dst_len = (lstrlenW(src) + 1) * sizeof(WCHAR);
1233 break;
1234 default:
1235 FIXME("unimplemented for %04x -> DBTYPE_WSTR\n", src_type);
1236 return E_NOTIMPL;
1237 }
1238 }
1239 break;
1240 default:
1241 FIXME("unimplemented for conversion %d->%d\n", src_type, dst_type);
1242 return E_NOTIMPL;
1243 }
1244
1245 return S_OK;
1246 }
1247
1248 static const struct IDataConvertVtbl convert_vtbl =
1249 {
1250 convert_QueryInterface,
1251 convert_AddRef,
1252 convert_Release,
1253 convert_DataConvert,
1254 convert_CanConvert,
1255 convert_GetConversionSize
1256 };
1257
1258 static HRESULT WINAPI dcinfo_QueryInterface(IDCInfo* iface, REFIID riid, void **obj)
1259 {
1260 convert *This = impl_from_IDCInfo(iface);
1261
1262 return IDataConvert_QueryInterface(&This->IDataConvert_iface, riid, obj);
1263 }
1264
1265 static ULONG WINAPI dcinfo_AddRef(IDCInfo* iface)
1266 {
1267 convert *This = impl_from_IDCInfo(iface);
1268
1269 return IDataConvert_AddRef(&This->IDataConvert_iface);
1270 }
1271
1272 static ULONG WINAPI dcinfo_Release(IDCInfo* iface)
1273 {
1274 convert *This = impl_from_IDCInfo(iface);
1275
1276 return IDataConvert_Release(&This->IDataConvert_iface);
1277 }
1278
1279 static HRESULT WINAPI dcinfo_GetInfo(IDCInfo *iface, ULONG num, DCINFOTYPE types[], DCINFO **info_ptr)
1280 {
1281 convert *This = impl_from_IDCInfo(iface);
1282 ULONG i;
1283 DCINFO *infos;
1284
1285 TRACE("(%p)->(%d, %p, %p)\n", This, num, types, info_ptr);
1286
1287 *info_ptr = infos = CoTaskMemAlloc(num * sizeof(*infos));
1288 if(!infos) return E_OUTOFMEMORY;
1289
1290 for(i = 0; i < num; i++)
1291 {
1292 infos[i].eInfoType = types[i];
1293 VariantInit(&infos[i].vData);
1294
1295 switch(types[i])
1296 {
1297 case DCINFOTYPE_VERSION:
1298 V_VT(&infos[i].vData) = VT_UI4;
1299 V_UI4(&infos[i].vData) = This->version;
1300 break;
1301 }
1302 }
1303
1304 return S_OK;
1305 }
1306
1307 static HRESULT WINAPI dcinfo_SetInfo(IDCInfo* iface, ULONG num, DCINFO info[])
1308 {
1309 convert *This = impl_from_IDCInfo(iface);
1310 ULONG i;
1311 HRESULT hr = S_OK;
1312
1313 TRACE("(%p)->(%d, %p)\n", This, num, info);
1314
1315 for(i = 0; i < num; i++)
1316 {
1317 switch(info[i].eInfoType)
1318 {
1319 case DCINFOTYPE_VERSION:
1320 if(V_VT(&info[i].vData) != VT_UI4)
1321 {
1322 FIXME("VERSION with vt %x\n", V_VT(&info[i].vData));
1323 hr = DB_S_ERRORSOCCURRED;
1324 break;
1325 }
1326 This->version = V_UI4(&info[i].vData);
1327 break;
1328
1329 default:
1330 FIXME("Unhandled info type %d (vt %x)\n", info[i].eInfoType, V_VT(&info[i].vData));
1331 }
1332 }
1333 return hr;
1334 }
1335
1336 static const struct IDCInfoVtbl dcinfo_vtbl =
1337 {
1338 dcinfo_QueryInterface,
1339 dcinfo_AddRef,
1340 dcinfo_Release,
1341 dcinfo_GetInfo,
1342 dcinfo_SetInfo
1343 };
1344
1345 HRESULT create_oledb_convert(IUnknown *outer, void **obj)
1346 {
1347 convert *This;
1348
1349 TRACE("(%p, %p)\n", outer, obj);
1350
1351 *obj = NULL;
1352
1353 if(outer) return CLASS_E_NOAGGREGATION;
1354
1355 This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1356 if(!This) return E_OUTOFMEMORY;
1357
1358 This->IDataConvert_iface.lpVtbl = &convert_vtbl;
1359 This->IDCInfo_iface.lpVtbl = &dcinfo_vtbl;
1360 This->ref = 1;
1361 This->version = 0x110;
1362
1363 *obj = &This->IDataConvert_iface;
1364
1365 return S_OK;
1366 }
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