git.oblomov.eu Git - wine/blob - dlls/oledb32/convert.c

   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 "ole2.h"
  29 #include "msdadc.h"
  30
  31 #include "oledb_private.h"
  32
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(oledb);
  36
  37 typedef struct
  38 {
  39     const struct IDataConvertVtbl *lpVtbl;
  40
  41     LONG ref;
  42 } convert;
  43
  44 static inline convert *impl_from_IDataConvert(IDataConvert *iface)
  45 {
  46     return (convert *)((char*)iface - FIELD_OFFSET(convert, lpVtbl));
  47 }
  48
  49 static HRESULT WINAPI convert_QueryInterface(IDataConvert* iface,
  50                                              REFIID riid,
  51                                              void **obj)
  52 {
  53     convert *This = impl_from_IDataConvert(iface);
  54     TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), obj);
  55
  56     *obj = NULL;
  57
  58     if(IsEqualIID(riid, &IID_IUnknown) ||
  59        IsEqualIID(riid, &IID_IDataConvert))
  60     {
  61         *obj = iface;
  62     }
  63     else
  64     {
  65         FIXME("interface %s not implemented\n", debugstr_guid(riid));
  66         return E_NOINTERFACE;
  67     }
  68
  69     IDataConvert_AddRef(iface);
  70     return S_OK;
  71 }
  72
  73
  74 static ULONG WINAPI convert_AddRef(IDataConvert* iface)
  75 {
  76     convert *This = impl_from_IDataConvert(iface);
  77     TRACE("(%p)\n", This);
  78
  79     return InterlockedIncrement(&This->ref);
  80 }
  81
  82
  83 static ULONG WINAPI convert_Release(IDataConvert* iface)
  84 {
  85     convert *This = impl_from_IDataConvert(iface);
  86     LONG ref;
  87
  88     TRACE("(%p)\n", This);
  89
  90     ref = InterlockedDecrement(&This->ref);
  91     if(ref == 0)
  92     {
  93         HeapFree(GetProcessHeap(), 0, This);
  94     }
  95
  96     return ref;
  97 }
  98
  99 static HRESULT WINAPI convert_DataConvert(IDataConvert* iface,
 100                                           DBTYPE wSrcType, DBTYPE wDstType,
 101                                           DBLENGTH cbSrcLength, DBLENGTH *pcbDstLength,
 102                                           void *pSrc, void *pDst,
 103                                           DBLENGTH cbDstMaxLength,
 104                                           DBSTATUS dbsSrcStatus, DBSTATUS *pdbsDstStatus,
 105                                           BYTE bPrecision, BYTE bScale,
 106                                           DBDATACONVERT dwFlags)
 107 {
 108     convert *This = impl_from_IDataConvert(iface);
 109     FIXME("(%p)->(%d, %d, %d, %p, %p, %p, %d, %d, %p, %d, %d, %x): stub\n", This,
 110           wSrcType, wDstType, cbSrcLength, pcbDstLength, pSrc, pDst, cbDstMaxLength,
 111           dbsSrcStatus, pdbsDstStatus, bPrecision, bScale, dwFlags);
 112
 113     return E_NOTIMPL;
 114 }
 115
 116 static HRESULT WINAPI convert_CanConvert(IDataConvert* iface,
 117                                          DBTYPE wSrcType, DBTYPE wDstType)
 118 {
 119     convert *This = impl_from_IDataConvert(iface);
 120     FIXME("(%p)->(%d, %d): stub\n", This, wSrcType, wDstType);
 121
 122     return E_NOTIMPL;
 123 }
 124
 125 static HRESULT WINAPI convert_GetConversionSize(IDataConvert* iface,
 126                                                 DBTYPE wSrcType, DBTYPE wDstType,
 127                                                 DBLENGTH *pcbSrcLength, DBLENGTH *pcbDstLength,
 128                                                 void *pSrc)
 129 {
 130     convert *This = impl_from_IDataConvert(iface);
 131     FIXME("(%p)->(%d, %d, %p, %p, %p): stub\n", This, wSrcType, wDstType, pcbSrcLength, pcbDstLength, pSrc);
 132
 133     return E_NOTIMPL;
 134
 135 }
 136
 137 static const struct IDataConvertVtbl convert_vtbl =
 138 {
 139     convert_QueryInterface,
 140     convert_AddRef,
 141     convert_Release,
 142     convert_DataConvert,
 143     convert_CanConvert,
 144     convert_GetConversionSize
 145 };
 146
 147 HRESULT create_oledb_convert(IUnknown *outer, void **obj)
 148 {
 149     convert *This;
 150
 151     TRACE("(%p, %p)\n", outer, obj);
 152
 153     *obj = NULL;
 154
 155     if(outer) return CLASS_E_NOAGGREGATION;
 156
 157     This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
 158     if(!This) return E_OUTOFMEMORY;
 159
 160     This->lpVtbl = &convert_vtbl;
 161     This->ref = 1;
 162
 163     *obj = &This->lpVtbl;
 164
 165     return S_OK;
 166 }