?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
inetcomm: Remove an unneeded variable.
[wine/multimedia.git] / dlls / oledb32 / convert.c
blob27ff58595ceb4e7fbaccc72b1801a84036f2d63c
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 const struct IDataConvertVtbl *lpVtbl;
42 const struct IDCInfoVtbl *lpDCInfoVtbl;
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 (convert *)((char*)iface - FIELD_OFFSET(convert, lpVtbl));
52 }
53
54 static inline convert *impl_from_IDCInfo(IDCInfo *iface)
55 {
56 return (convert *)((char*)iface - FIELD_OFFSET(convert, lpDCInfoVtbl));
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->lpDCInfoVtbl;
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_I4:
124 case DBTYPE_UI4:
125 case DBTYPE_R4:
126 return 4;
127 case DBTYPE_I8:
128 case DBTYPE_UI8:
129 return 8;
130 case DBTYPE_CY:
131 return sizeof(CY);
132 case DBTYPE_BSTR:
133 return sizeof(BSTR);
134 case DBTYPE_FILETIME:
135 return sizeof(FILETIME);
136 case DBTYPE_GUID:
137 return sizeof(GUID);
138 case DBTYPE_WSTR:
139 case DBTYPE_BYREF | DBTYPE_WSTR:
140 return 0;
141 default:
142 FIXME("Unhandled type %04x\n", type);
143 return 0;
144 }
145 }
146
147 static HRESULT WINAPI convert_DataConvert(IDataConvert* iface,
148 DBTYPE src_type, DBTYPE dst_type,
149 DBLENGTH src_len, DBLENGTH *dst_len,
150 void *src, void *dst,
151 DBLENGTH dst_max_len,
152 DBSTATUS src_status, DBSTATUS *dst_status,
153 BYTE precision, BYTE scale,
154 DBDATACONVERT flags)
155 {
156 convert *This = impl_from_IDataConvert(iface);
157 HRESULT hr;
158
159 TRACE("(%p)->(%d, %d, %d, %p, %p, %p, %d, %d, %p, %d, %d, %x)\n", This,
160 src_type, dst_type, src_len, dst_len, src, dst, dst_max_len,
161 src_status, dst_status, precision, scale, flags);
162
163 *dst_len = get_length(dst_type);
164 *dst_status = DBSTATUS_E_BADACCESSOR;
165
166 if(IDataConvert_CanConvert(iface, src_type, dst_type) != S_OK)
167 {
168 return DB_E_UNSUPPORTEDCONVERSION;
169 }
170
171 if(src_type == DBTYPE_STR)
172 {
173 BSTR b;
174 DWORD len;
175
176 if(flags & DBDATACONVERT_LENGTHFROMNTS)
177 len = MultiByteToWideChar(CP_ACP, 0, src, -1, NULL, 0) - 1;
178 else
179 len = MultiByteToWideChar(CP_ACP, 0, src, src_len, NULL, 0);
180 b = SysAllocStringLen(NULL, len);
181 if(!b) return E_OUTOFMEMORY;
182 if(flags & DBDATACONVERT_LENGTHFROMNTS)
183 MultiByteToWideChar(CP_ACP, 0, src, -1, b, len + 1);
184 else
185 MultiByteToWideChar(CP_ACP, 0, src, src_len, b, len);
186
187 hr = IDataConvert_DataConvert(iface, DBTYPE_BSTR, dst_type, 0, dst_len,
188 &b, dst, dst_max_len, src_status, dst_status,
189 precision, scale, flags);
190
191 SysFreeString(b);
192 return hr;
193 }
194
195 if(src_type == DBTYPE_WSTR)
196 {
197 BSTR b;
198
199 if(flags & DBDATACONVERT_LENGTHFROMNTS)
200 b = SysAllocString(src);
201 else
202 b = SysAllocStringLen(src, src_len / 2);
203 if(!b) return E_OUTOFMEMORY;
204 hr = IDataConvert_DataConvert(iface, DBTYPE_BSTR, dst_type, 0, dst_len,
205 &b, dst, dst_max_len, src_status, dst_status,
206 precision, scale, flags);
207 SysFreeString(b);
208 return hr;
209 }
210
211 switch(dst_type)
212 {
213 case DBTYPE_I2:
214 {
215 signed short *d = dst;
216 switch(src_type)
217 {
218 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
219 case DBTYPE_I2: *d = *(signed short*)src; hr = S_OK; break;
220 case DBTYPE_I4: hr = VarI2FromI4(*(signed int*)src, d); break;
221 case DBTYPE_R4: hr = VarI2FromR4(*(FLOAT*)src, d); break;
222 case DBTYPE_R8: hr = VarI2FromR8(*(double*)src, d); break;
223 case DBTYPE_CY: hr = VarI2FromCy(*(CY*)src, d); break;
224 case DBTYPE_DATE: hr = VarI2FromDate(*(DATE*)src, d); break;
225 case DBTYPE_BSTR: hr = VarI2FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
226 case DBTYPE_BOOL: hr = VarI2FromBool(*(VARIANT_BOOL*)src, d); break;
227 case DBTYPE_DECIMAL: hr = VarI2FromDec((DECIMAL*)src, d); break;
228 case DBTYPE_I1: hr = VarI2FromI1(*(signed char*)src, d); break;
229 case DBTYPE_UI1: hr = VarI2FromUI1(*(BYTE*)src, d); break;
230 case DBTYPE_UI2: hr = VarI2FromUI2(*(WORD*)src, d); break;
231 case DBTYPE_UI4: hr = VarI2FromUI4(*(DWORD*)src, d); break;
232 case DBTYPE_I8: hr = VarI2FromI8(*(LONGLONG*)src, d); break;
233 case DBTYPE_UI8: hr = VarI2FromUI8(*(ULONGLONG*)src, d); break;
234 default: FIXME("Unimplemented conversion %04x -> I2\n", src_type); return E_NOTIMPL;
235 }
236 break;
237 }
238
239 case DBTYPE_I4:
240 {
241 signed int *d = dst;
242 switch(src_type)
243 {
244 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
245 case DBTYPE_I2: hr = VarI4FromI2(*(signed short*)src, d); break;
246 case DBTYPE_I4: *d = *(signed int*)src; hr = S_OK; break;
247 case DBTYPE_R4: hr = VarI4FromR4(*(FLOAT*)src, d); break;
248 case DBTYPE_R8: hr = VarI4FromR8(*(double*)src, d); break;
249 case DBTYPE_CY: hr = VarI4FromCy(*(CY*)src, d); break;
250 case DBTYPE_DATE: hr = VarI4FromDate(*(DATE*)src, d); break;
251 case DBTYPE_BSTR: hr = VarI4FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
252 case DBTYPE_BOOL: hr = VarI4FromBool(*(VARIANT_BOOL*)src, d); break;
253 case DBTYPE_DECIMAL: hr = VarI4FromDec((DECIMAL*)src, d); break;
254 case DBTYPE_I1: hr = VarI4FromI1(*(signed char*)src, d); break;
255 case DBTYPE_UI1: hr = VarI4FromUI1(*(BYTE*)src, d); break;
256 case DBTYPE_UI2: hr = VarI4FromUI2(*(WORD*)src, d); break;
257 case DBTYPE_UI4: hr = VarI4FromUI4(*(DWORD*)src, d); break;
258 case DBTYPE_I8: hr = VarI4FromI8(*(LONGLONG*)src, d); break;
259 case DBTYPE_UI8: hr = VarI4FromUI8(*(ULONGLONG*)src, d); break;
260 default: FIXME("Unimplemented conversion %04x -> I4\n", src_type); return E_NOTIMPL;
261 }
262 break;
263 }
264
265 case DBTYPE_R4:
266 {
267 FLOAT *d = dst;
268 switch(src_type)
269 {
270 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
271 case DBTYPE_I2: hr = VarR4FromI2(*(signed short*)src, d); break;
272 case DBTYPE_I4: hr = VarR4FromI4(*(signed int*)src, d); break;
273 case DBTYPE_R4: *d = *(FLOAT*)src; hr = S_OK; break;
274 case DBTYPE_R8: hr = VarR4FromR8(*(double*)src, d); break;
275 case DBTYPE_CY: hr = VarR4FromCy(*(CY*)src, d); break;
276 case DBTYPE_DATE: hr = VarR4FromDate(*(DATE*)src, d); break;
277 case DBTYPE_BSTR: hr = VarR4FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
278 case DBTYPE_BOOL: hr = VarR4FromBool(*(VARIANT_BOOL*)src, d); break;
279 case DBTYPE_DECIMAL: hr = VarR4FromDec((DECIMAL*)src, d); break;
280 case DBTYPE_I1: hr = VarR4FromI1(*(signed char*)src, d); break;
281 case DBTYPE_UI1: hr = VarR4FromUI1(*(BYTE*)src, d); break;
282 case DBTYPE_UI2: hr = VarR4FromUI2(*(WORD*)src, d); break;
283 case DBTYPE_UI4: hr = VarR4FromUI4(*(DWORD*)src, d); break;
284 case DBTYPE_I8: hr = VarR4FromI8(*(LONGLONG*)src, d); break;
285 case DBTYPE_UI8: hr = VarR4FromUI8(*(ULONGLONG*)src, d); break;
286 default: FIXME("Unimplemented conversion %04x -> R4\n", src_type); return E_NOTIMPL;
287 }
288 break;
289 }
290
291 case DBTYPE_CY:
292 {
293 CY *d = dst;
294 switch(src_type)
295 {
296 case DBTYPE_EMPTY: d->int64 = 0; hr = S_OK; break;
297 case DBTYPE_I2: hr = VarCyFromI2(*(signed short*)src, d); break;
298 case DBTYPE_I4: hr = VarCyFromI4(*(signed int*)src, d); break;
299 case DBTYPE_R4: hr = VarCyFromR4(*(FLOAT*)src, d); break;
300 case DBTYPE_R8: hr = VarCyFromR8(*(double*)src, d); break;
301 case DBTYPE_CY: *d = *(CY*)src; hr = S_OK; break;
302 case DBTYPE_DATE: hr = VarCyFromDate(*(DATE*)src, d); break;
303 case DBTYPE_BSTR: hr = VarCyFromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
304 case DBTYPE_BOOL: hr = VarCyFromBool(*(VARIANT_BOOL*)src, d); break;
305 case DBTYPE_DECIMAL: hr = VarCyFromDec((DECIMAL*)src, d); break;
306 case DBTYPE_I1: hr = VarCyFromI1(*(signed char*)src, d); break;
307 case DBTYPE_UI1: hr = VarCyFromUI1(*(BYTE*)src, d); break;
308 case DBTYPE_UI2: hr = VarCyFromUI2(*(WORD*)src, d); break;
309 case DBTYPE_UI4: hr = VarCyFromUI4(*(DWORD*)src, d); break;
310 case DBTYPE_I8: hr = VarCyFromI8(*(LONGLONG*)src, d); break;
311 case DBTYPE_UI8: hr = VarCyFromUI8(*(ULONGLONG*)src, d); break;
312 default: FIXME("Unimplemented conversion %04x -> CY\n", src_type); return E_NOTIMPL;
313 }
314 break;
315 }
316
317 case DBTYPE_BSTR:
318 {
319 BSTR *d = dst;
320 switch(src_type)
321 {
322 case DBTYPE_EMPTY: *d = SysAllocStringLen(NULL, 0); hr = *d ? S_OK : E_OUTOFMEMORY; break;
323 case DBTYPE_I2: hr = VarBstrFromI2(*(signed short*)src, LOCALE_USER_DEFAULT, 0, d); break;
324 case DBTYPE_I4: hr = VarBstrFromI4(*(signed int*)src, LOCALE_USER_DEFAULT, 0, d); break;
325 case DBTYPE_R4: hr = VarBstrFromR4(*(FLOAT*)src, LOCALE_USER_DEFAULT, 0, d); break;
326 case DBTYPE_R8: hr = VarBstrFromR8(*(double*)src, LOCALE_USER_DEFAULT, 0, d); break;
327 case DBTYPE_CY: hr = VarBstrFromCy(*(CY*)src, LOCALE_USER_DEFAULT, 0, d); break;
328 case DBTYPE_DATE: hr = VarBstrFromDate(*(DATE*)src, LOCALE_USER_DEFAULT, 0, d); break;
329 case DBTYPE_BSTR: *d = SysAllocStringLen(*(BSTR*)src, SysStringLen(*(BSTR*)src)); hr = *d ? S_OK : E_OUTOFMEMORY; break;
330 case DBTYPE_BOOL: hr = VarBstrFromBool(*(VARIANT_BOOL*)src, LOCALE_USER_DEFAULT, 0, d); break;
331 case DBTYPE_DECIMAL: hr = VarBstrFromDec((DECIMAL*)src, LOCALE_USER_DEFAULT, 0, d); break;
332 case DBTYPE_I1: hr = VarBstrFromI1(*(signed char*)src, LOCALE_USER_DEFAULT, 0, d); break;
333 case DBTYPE_UI1: hr = VarBstrFromUI1(*(BYTE*)src, LOCALE_USER_DEFAULT, 0, d); break;
334 case DBTYPE_UI2: hr = VarBstrFromUI2(*(WORD*)src, LOCALE_USER_DEFAULT, 0, d); break;
335 case DBTYPE_UI4: hr = VarBstrFromUI4(*(DWORD*)src, LOCALE_USER_DEFAULT, 0, d); break;
336 case DBTYPE_I8: hr = VarBstrFromI8(*(LONGLONG*)src, LOCALE_USER_DEFAULT, 0, d); break;
337 case DBTYPE_UI8: hr = VarBstrFromUI8(*(ULONGLONG*)src, LOCALE_USER_DEFAULT, 0, d); break;
338 default: FIXME("Unimplemented conversion %04x -> BSTR\n", src_type); return E_NOTIMPL;
339 }
340 break;
341 }
342
343 case DBTYPE_UI1:
344 {
345 BYTE *d = dst;
346 switch(src_type)
347 {
348 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
349 case DBTYPE_I2: hr = VarUI1FromI2(*(signed short*)src, d); break;
350 case DBTYPE_I4: hr = VarUI1FromI4(*(signed int*)src, d); break;
351 case DBTYPE_R4: hr = VarUI1FromR4(*(FLOAT*)src, d); break;
352 case DBTYPE_R8: hr = VarUI1FromR8(*(double*)src, d); break;
353 case DBTYPE_CY: hr = VarUI1FromCy(*(CY*)src, d); break;
354 case DBTYPE_DATE: hr = VarUI1FromDate(*(DATE*)src, d); break;
355 case DBTYPE_BSTR: hr = VarUI1FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
356 case DBTYPE_BOOL: hr = VarUI1FromBool(*(VARIANT_BOOL*)src, d); break;
357 case DBTYPE_DECIMAL: hr = VarUI1FromDec((DECIMAL*)src, d); break;
358 case DBTYPE_I1: hr = VarUI1FromI1(*(signed char*)src, d); break;
359 case DBTYPE_UI1: *d = *(BYTE*)src; hr = S_OK; break;
360 case DBTYPE_UI2: hr = VarUI1FromUI2(*(WORD*)src, d); break;
361 case DBTYPE_UI4: hr = VarUI1FromUI4(*(DWORD*)src, d); break;
362 case DBTYPE_I8: hr = VarUI1FromI8(*(LONGLONG*)src, d); break;
363 case DBTYPE_UI8: hr = VarUI1FromUI8(*(ULONGLONG*)src, d); break;
364 default: FIXME("Unimplemented conversion %04x -> UI1\n", src_type); return E_NOTIMPL;
365 }
366 break;
367 }
368
369 case DBTYPE_UI4:
370 {
371 DWORD *d = dst;
372 switch(src_type)
373 {
374 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
375 case DBTYPE_I2: hr = VarUI4FromI2(*(signed short*)src, d); break;
376 case DBTYPE_I4: hr = VarUI4FromI4(*(signed int*)src, d); break;
377 case DBTYPE_R4: hr = VarUI4FromR4(*(FLOAT*)src, d); break;
378 case DBTYPE_R8: hr = VarUI4FromR8(*(double*)src, d); break;
379 case DBTYPE_CY: hr = VarUI4FromCy(*(CY*)src, d); break;
380 case DBTYPE_DATE: hr = VarUI4FromDate(*(DATE*)src, d); break;
381 case DBTYPE_BSTR: hr = VarUI4FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
382 case DBTYPE_BOOL: hr = VarUI4FromBool(*(VARIANT_BOOL*)src, d); break;
383 case DBTYPE_DECIMAL: hr = VarUI4FromDec((DECIMAL*)src, d); break;
384 case DBTYPE_I1: hr = VarUI4FromI1(*(signed char*)src, d); break;
385 case DBTYPE_UI1: hr = VarUI4FromUI1(*(BYTE*)src, d); break;
386 case DBTYPE_UI2: hr = VarUI4FromUI2(*(WORD*)src, d); break;
387 case DBTYPE_UI4: *d = *(DWORD*)src; hr = S_OK; break;
388 case DBTYPE_I8: hr = VarUI4FromI8(*(LONGLONG*)src, d); break;
389 case DBTYPE_UI8: hr = VarUI4FromUI8(*(ULONGLONG*)src, d); break;
390 default: FIXME("Unimplemented conversion %04x -> UI4\n", src_type); return E_NOTIMPL;
391 }
392 break;
393 }
394
395 case DBTYPE_UI8:
396 {
397 ULONGLONG *d = dst;
398 switch(src_type)
399 {
400 case DBTYPE_EMPTY: *d = 0; hr = S_OK; break;
401 case DBTYPE_I2: hr = VarUI8FromI2(*(signed short*)src, d); break;
402 case DBTYPE_I4: {LONGLONG s = *(signed int*)src; hr = VarUI8FromI8(s, d); break;}
403 case DBTYPE_R4: hr = VarUI8FromR4(*(FLOAT*)src, d); break;
404 case DBTYPE_R8: hr = VarUI8FromR8(*(double*)src, d); break;
405 case DBTYPE_CY: hr = VarUI8FromCy(*(CY*)src, d); break;
406 case DBTYPE_DATE: hr = VarUI8FromDate(*(DATE*)src, d); break;
407 case DBTYPE_BSTR: hr = VarUI8FromStr(*(WCHAR**)src, LOCALE_USER_DEFAULT, 0, d); break;
408 case DBTYPE_BOOL: hr = VarUI8FromBool(*(VARIANT_BOOL*)src, d); break;
409 case DBTYPE_DECIMAL: hr = VarUI8FromDec((DECIMAL*)src, d); break;
410 case DBTYPE_I1: hr = VarUI8FromI1(*(signed char*)src, d); break;
411 case DBTYPE_UI1: hr = VarUI8FromUI1(*(BYTE*)src, d); break;
412 case DBTYPE_UI2: hr = VarUI8FromUI2(*(WORD*)src, d); break;
413 case DBTYPE_UI4: hr = VarUI8FromUI4(*(DWORD*)src, d); break;
414 case DBTYPE_I8: hr = VarUI8FromI8(*(LONGLONG*)src, d); break;
415 case DBTYPE_UI8: *d = *(ULONGLONG*)src; hr = S_OK; break;
416 default: FIXME("Unimplemented conversion %04x -> UI8\n", src_type); return E_NOTIMPL;
417 }
418 break;
419 }
420
421 case DBTYPE_FILETIME:
422 {
423 FILETIME *d = dst;
424 switch(src_type)
425 {
426 case DBTYPE_EMPTY: d->dwLowDateTime = d->dwHighDateTime = 0; hr = S_OK; break;
427 case DBTYPE_FILETIME: *d = *(FILETIME*)src; hr = S_OK; break;
428 default: FIXME("Unimplemented conversion %04x -> FILETIME\n", src_type); return E_NOTIMPL;
429 }
430 break;
431 }
432
433 case DBTYPE_GUID:
434 {
435 GUID *d = dst;
436 switch(src_type)
437 {
438 case DBTYPE_EMPTY: *d = GUID_NULL; hr = S_OK; break;
439 case DBTYPE_GUID: *d = *(GUID*)src; hr = S_OK; break;
440 default: FIXME("Unimplemented conversion %04x -> GUID\n", src_type); return E_NOTIMPL;
441 }
442 break;
443 }
444
445 case DBTYPE_WSTR:
446 {
447 BSTR b;
448 DBLENGTH bstr_len;
449 INT bytes_to_copy;
450 hr = IDataConvert_DataConvert(iface, src_type, DBTYPE_BSTR, src_len, &bstr_len,
451 src, &b, sizeof(BSTR), src_status, dst_status,
452 precision, scale, flags);
453 if(hr != S_OK) return hr;
454 bstr_len = SysStringLen(b);
455 *dst_len = bstr_len * sizeof(WCHAR); /* Doesn't include size for '\0' */
456 *dst_status = DBSTATUS_S_OK;
457 bytes_to_copy = min(*dst_len + sizeof(WCHAR), dst_max_len);
458 if(dst)
459 {
460 if(bytes_to_copy >= sizeof(WCHAR))
461 {
462 memcpy(dst, b, bytes_to_copy - sizeof(WCHAR));
463 *((WCHAR*)dst + bytes_to_copy / sizeof(WCHAR) - 1) = 0;
464 if(bytes_to_copy < *dst_len + sizeof(WCHAR))
465 *dst_status = DBSTATUS_S_TRUNCATED;
466 }
467 else
468 {
469 *dst_status = DBSTATUS_E_DATAOVERFLOW;
470 hr = DB_E_ERRORSOCCURRED;
471 }
472 }
473 SysFreeString(b);
474 return hr;
475 }
476
477 case DBTYPE_BYREF | DBTYPE_WSTR:
478 {
479 BSTR b;
480 WCHAR **d = dst;
481 DBLENGTH bstr_len;
482 hr = IDataConvert_DataConvert(iface, src_type, DBTYPE_BSTR, src_len, &bstr_len,
483 src, &b, sizeof(BSTR), src_status, dst_status,
484 precision, scale, flags);
485 if(hr != S_OK) return hr;
486
487 bstr_len = SysStringLen(b) * sizeof(WCHAR);
488 *dst_len = bstr_len; /* Doesn't include size for '\0' */
489
490 *d = CoTaskMemAlloc(bstr_len + sizeof(WCHAR));
491 if(*d) memcpy(*d, b, bstr_len + sizeof(WCHAR));
492 else hr = E_OUTOFMEMORY;
493 SysFreeString(b);
494 return hr;
495 }
496
497 default:
498 FIXME("Unimplemented conversion %04x -> %04x\n", src_type, dst_type);
499 return E_NOTIMPL;
500
501 }
502
503 if(hr == DISP_E_OVERFLOW)
504 {
505 *dst_status = DBSTATUS_E_DATAOVERFLOW;
506 hr = DB_E_ERRORSOCCURRED;
507 }
508 else if(hr == S_OK)
509 *dst_status = DBSTATUS_S_OK;
510
511 return hr;
512 }
513
514 static inline WORD get_dbtype_class(DBTYPE type)
515 {
516 switch(type)
517 {
518 case DBTYPE_I2:
519 case DBTYPE_R4:
520 case DBTYPE_R8:
521 case DBTYPE_I1:
522 case DBTYPE_UI1:
523 case DBTYPE_UI2:
524 return DBTYPE_I2;
525
526 case DBTYPE_I4:
527 case DBTYPE_UI4:
528 return DBTYPE_I4;
529
530 case DBTYPE_I8:
531 case DBTYPE_UI8:
532 return DBTYPE_I8;
533
534 case DBTYPE_BSTR:
535 case DBTYPE_STR:
536 case DBTYPE_WSTR:
537 return DBTYPE_BSTR;
538
539 case DBTYPE_DBDATE:
540 case DBTYPE_DBTIME:
541 case DBTYPE_DBTIMESTAMP:
542 return DBTYPE_DBDATE;
543 }
544 return type;
545 }
546
547 /* Many src types will convert to this group of dst types */
548 static inline BOOL common_class(WORD dst_class)
549 {
550 switch(dst_class)
551 {
552 case DBTYPE_EMPTY:
553 case DBTYPE_NULL:
554 case DBTYPE_I2:
555 case DBTYPE_I4:
556 case DBTYPE_BSTR:
557 case DBTYPE_BOOL:
558 case DBTYPE_VARIANT:
559 case DBTYPE_I8:
560 case DBTYPE_CY:
561 case DBTYPE_DECIMAL:
562 case DBTYPE_NUMERIC:
563 return TRUE;
564 }
565 return FALSE;
566 }
567
568 static inline BOOL array_type(DBTYPE type)
569 {
570 return (type >= DBTYPE_I2 && type <= DBTYPE_UI4);
571 }
572
573 static HRESULT WINAPI convert_CanConvert(IDataConvert* iface,
574 DBTYPE src_type, DBTYPE dst_type)
575 {
576 convert *This = impl_from_IDataConvert(iface);
577 DBTYPE src_base_type = src_type & 0x1ff;
578 DBTYPE dst_base_type = dst_type & 0x1ff;
579 WORD dst_class = get_dbtype_class(dst_base_type);
580
581 TRACE("(%p)->(%d, %d)\n", This, src_type, dst_type);
582
583 if(src_type & DBTYPE_VECTOR || dst_type & DBTYPE_VECTOR) return S_FALSE;
584
585 if(src_type & DBTYPE_ARRAY)
586 {
587 if(!array_type(src_base_type)) return S_FALSE;
588 if(dst_type & DBTYPE_ARRAY)
589 {
590 if(src_type == dst_type) return S_OK;
591 return S_FALSE;
592 }
593 if(dst_type == DBTYPE_VARIANT) return S_OK;
594 return S_FALSE;
595 }
596
597 if(dst_type & DBTYPE_ARRAY)
598 {
599 if(!array_type(dst_base_type)) return S_FALSE;
600 if(src_type == DBTYPE_IDISPATCH || src_type == DBTYPE_VARIANT) return S_OK;
601 return S_FALSE;
602 }
603
604 if(dst_type & DBTYPE_BYREF)
605 if(dst_base_type != DBTYPE_BYTES && dst_base_type != DBTYPE_STR && dst_base_type != DBTYPE_WSTR)
606 return S_FALSE;
607
608 switch(get_dbtype_class(src_base_type))
609 {
610 case DBTYPE_EMPTY:
611 if(common_class(dst_class)) return S_OK;
612 switch(dst_class)
613 {
614 case DBTYPE_DATE:
615 case DBTYPE_GUID:
616 case DBTYPE_FILETIME:
617 return S_OK;
618 default:
619 if(dst_base_type == DBTYPE_DBTIMESTAMP) return S_OK;
620 return S_FALSE;
621 }
622
623 case DBTYPE_NULL:
624 switch(dst_base_type)
625 {
626 case DBTYPE_NULL:
627 case DBTYPE_VARIANT:
628 case DBTYPE_FILETIME: return S_OK;
629 default: return S_FALSE;
630 }
631
632 case DBTYPE_I4:
633 if(dst_base_type == DBTYPE_BYTES) return S_OK;
634 /* fall through */
635 case DBTYPE_I2:
636 if(dst_base_type == DBTYPE_DATE) return S_OK;
637 /* fall through */
638 case DBTYPE_DECIMAL:
639 if(common_class(dst_class)) return S_OK;
640 if(dst_class == DBTYPE_DBDATE) return S_OK;
641 return S_FALSE;
642
643 case DBTYPE_BOOL:
644 if(dst_base_type == DBTYPE_DATE) return S_OK;
645 case DBTYPE_NUMERIC:
646 case DBTYPE_CY:
647 if(common_class(dst_class)) return S_OK;
648 return S_FALSE;
649
650 case DBTYPE_I8:
651 if(common_class(dst_class)) return S_OK;
652 switch(dst_base_type)
653 {
654 case DBTYPE_BYTES:
655 case DBTYPE_FILETIME: return S_OK;
656 default: return S_FALSE;
657 }
658
659 case DBTYPE_DATE:
660 switch(dst_class)
661 {
662 case DBTYPE_EMPTY:
663 case DBTYPE_NULL:
664 case DBTYPE_I2:
665 case DBTYPE_I4:
666 case DBTYPE_BSTR:
667 case DBTYPE_BOOL:
668 case DBTYPE_VARIANT:
669 case DBTYPE_I8:
670 case DBTYPE_DATE:
671 case DBTYPE_DBDATE:
672 case DBTYPE_FILETIME:
673 return S_OK;
674 default: return S_FALSE;
675 }
676
677 case DBTYPE_IDISPATCH:
678 case DBTYPE_VARIANT:
679 switch(dst_base_type)
680 {
681 case DBTYPE_IDISPATCH:
682 case DBTYPE_ERROR:
683 case DBTYPE_IUNKNOWN:
684 return S_OK;
685 }
686 /* fall through */
687 case DBTYPE_BSTR:
688 if(common_class(dst_class)) return S_OK;
689 switch(dst_class)
690 {
691 case DBTYPE_DATE:
692 case DBTYPE_GUID:
693 case DBTYPE_BYTES:
694 case DBTYPE_DBDATE:
695 case DBTYPE_FILETIME:
696 return S_OK;
697 default: return S_FALSE;
698 }
699
700 case DBTYPE_ERROR:
701 switch(dst_base_type)
702 {
703 case DBTYPE_BSTR:
704 case DBTYPE_ERROR:
705 case DBTYPE_VARIANT:
706 case DBTYPE_WSTR:
707 return S_OK;
708 default: return S_FALSE;
709 }
710
711 case DBTYPE_IUNKNOWN:
712 switch(dst_base_type)
713 {
714 case DBTYPE_EMPTY:
715 case DBTYPE_NULL:
716 case DBTYPE_IDISPATCH:
717 case DBTYPE_VARIANT:
718 case DBTYPE_IUNKNOWN:
719 return S_OK;
720 default: return S_FALSE;
721 }
722
723 case DBTYPE_BYTES:
724 if(dst_class == DBTYPE_I4 || dst_class == DBTYPE_I8) return S_OK;
725 /* fall through */
726 case DBTYPE_GUID:
727 switch(dst_class)
728 {
729 case DBTYPE_EMPTY:
730 case DBTYPE_NULL:
731 case DBTYPE_BSTR:
732 case DBTYPE_VARIANT:
733 case DBTYPE_GUID:
734 case DBTYPE_BYTES:
735 return S_OK;
736 default: return S_FALSE;
737 }
738
739 case DBTYPE_FILETIME:
740 if(dst_class == DBTYPE_I8) return S_OK;
741 /* fall through */
742 case DBTYPE_DBDATE:
743 switch(dst_class)
744 {
745 case DBTYPE_EMPTY:
746 case DBTYPE_NULL:
747 case DBTYPE_DATE:
748 case DBTYPE_BSTR:
749 case DBTYPE_VARIANT:
750 case DBTYPE_DBDATE:
751 case DBTYPE_FILETIME:
752 return S_OK;
753 default: return S_FALSE;
754 }
755
756 }
757 return S_FALSE;
758 }
759
760 static HRESULT WINAPI convert_GetConversionSize(IDataConvert* iface,
761 DBTYPE wSrcType, DBTYPE wDstType,
762 DBLENGTH *pcbSrcLength, DBLENGTH *pcbDstLength,
763 void *pSrc)
764 {
765 convert *This = impl_from_IDataConvert(iface);
766 FIXME("(%p)->(%d, %d, %p, %p, %p): stub\n", This, wSrcType, wDstType, pcbSrcLength, pcbDstLength, pSrc);
767
768 return E_NOTIMPL;
769 }
770
771 static const struct IDataConvertVtbl convert_vtbl =
772 {
773 convert_QueryInterface,
774 convert_AddRef,
775 convert_Release,
776 convert_DataConvert,
777 convert_CanConvert,
778 convert_GetConversionSize
779 };
780
781 static HRESULT WINAPI dcinfo_QueryInterface(IDCInfo* iface, REFIID riid, void **obj)
782 {
783 convert *This = impl_from_IDCInfo(iface);
784
785 return IDataConvert_QueryInterface((IDataConvert *)This, riid, obj);
786 }
787
788 static ULONG WINAPI dcinfo_AddRef(IDCInfo* iface)
789 {
790 convert *This = impl_from_IDCInfo(iface);
791
792 return IDataConvert_AddRef((IDataConvert *)This);
793 }
794
795 static ULONG WINAPI dcinfo_Release(IDCInfo* iface)
796 {
797 convert *This = impl_from_IDCInfo(iface);
798
799 return IDataConvert_Release((IDataConvert *)This);
800 }
801
802 static HRESULT WINAPI dcinfo_GetInfo(IDCInfo *iface, ULONG num, DCINFOTYPE types[], DCINFO **info_ptr)
803 {
804 convert *This = impl_from_IDCInfo(iface);
805 ULONG i;
806 DCINFO *infos;
807
808 TRACE("(%p)->(%d, %p, %p)\n", This, num, types, info_ptr);
809
810 *info_ptr = infos = CoTaskMemAlloc(num * sizeof(*infos));
811 if(!infos) return E_OUTOFMEMORY;
812
813 for(i = 0; i < num; i++)
814 {
815 infos[i].eInfoType = types[i];
816 VariantInit(&infos[i].vData);
817
818 switch(types[i])
819 {
820 case DCINFOTYPE_VERSION:
821 V_VT(&infos[i].vData) = VT_UI4;
822 V_UI4(&infos[i].vData) = This->version;
823 break;
824 }
825 }
826
827 return S_OK;
828 }
829
830 static HRESULT WINAPI dcinfo_SetInfo(IDCInfo* iface, ULONG num, DCINFO info[])
831 {
832 convert *This = impl_from_IDCInfo(iface);
833 ULONG i;
834 HRESULT hr = S_OK;
835
836 TRACE("(%p)->(%d, %p)\n", This, num, info);
837
838 for(i = 0; i < num; i++)
839 {
840 switch(info[i].eInfoType)
841 {
842 case DCINFOTYPE_VERSION:
843 if(V_VT(&info[i].vData) != VT_UI4)
844 {
845 FIXME("VERSION with vt %x\n", V_VT(&info[i].vData));
846 hr = DB_S_ERRORSOCCURRED;
847 break;
848 }
849 This->version = V_UI4(&info[i].vData);
850 break;
851
852 default:
853 FIXME("Unhandled info type %d (vt %x)\n", info[i].eInfoType, V_VT(&info[i].vData));
854 }
855 }
856 return hr;
857 }
858
859 static const struct IDCInfoVtbl dcinfo_vtbl =
860 {
861 dcinfo_QueryInterface,
862 dcinfo_AddRef,
863 dcinfo_Release,
864 dcinfo_GetInfo,
865 dcinfo_SetInfo
866 };
867
868 HRESULT create_oledb_convert(IUnknown *outer, void **obj)
869 {
870 convert *This;
871
872 TRACE("(%p, %p)\n", outer, obj);
873
874 *obj = NULL;
875
876 if(outer) return CLASS_E_NOAGGREGATION;
877
878 This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
879 if(!This) return E_OUTOFMEMORY;
880
881 This->lpVtbl = &convert_vtbl;
882 This->lpDCInfoVtbl = &dcinfo_vtbl;
883 This->ref = 1;
884 This->version = 0x110;
885
886 *obj = &This->lpVtbl;
887
888 return S_OK;
889 }
Maarten's multimedia branch