dlls/oleaut32/ole2disp.c

   1 /*
   2  *      OLE2DISP library
   3  *
   4  *      Copyright 1995  Martin von Loewis
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #include <string.h>
  25
  26 #include "wine/windef16.h"
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "winuser.h"
  31 #include "ole2.h"
  32 #include "oleauto.h"
  33 #include "winerror.h"
  34
  35 #include "ole2disp.h"
  36 #include "olectl.h"
  37
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  41
  42 /* This implementation of the BSTR API is 16-bit only. It
  43    represents BSTR as a 16:16 far pointer, and the strings
  44    as ISO-8859 */
  45
  46 /******************************************************************************
  47  *              BSTR_AllocBytes [Internal]
  48  */
  49 static BSTR16 BSTR_AllocBytes(int n)
  50 {
  51     void *ptr = HeapAlloc( GetProcessHeap(), 0, n );
  52     return (BSTR16)MapLS(ptr);
  53 }
  54
  55 /******************************************************************************
  56  * BSTR_Free [INTERNAL]
  57  */
  58 static void BSTR_Free(BSTR16 in)
  59 {
  60     void *ptr = MapSL( (SEGPTR)in );
  61     UnMapLS( (SEGPTR)in );
  62     HeapFree( GetProcessHeap(), 0, ptr );
  63 }
  64
  65 /******************************************************************************
  66  * BSTR_GetAddr [INTERNAL]
  67  */
  68 static void* BSTR_GetAddr(BSTR16 in)
  69 {
  70     return in ? MapSL((SEGPTR)in) : 0;
  71 }
  72
  73 /******************************************************************************
  74  *              SysAllocString  [OLE2DISP.2]
  75  *
  76  * Create a BSTR16 from an OLESTR16 (16 Bit).
  77  *
  78  * PARAMS
  79  *  oleStr [I] Source to create BSTR16 from
  80  *
  81  * RETURNS
  82  *  Success: A BSTR16 allocated with SysAllocStringLen16().
  83  *  Failure: NULL, if oleStr is NULL.
  84  */
  85 BSTR16 WINAPI SysAllocString16(LPCOLESTR16 oleStr)
  86 {
  87         BSTR16 out;
  88
  89         if (!oleStr) return 0;
  90
  91         out = BSTR_AllocBytes(strlen(oleStr)+1);
  92         if (!out) return 0;
  93         strcpy(BSTR_GetAddr(out),oleStr);
  94         return out;
  95 }
  96
  97 /******************************************************************************
  98  *              SysReallocString        [OLE2DISP.3]
  99  *
 100  * Change the length of a previously created BSTR16 (16 Bit).
 101  *
 102  * PARAMS
 103  *  pbstr  [I] BSTR16 to change the length of
 104  *  oleStr [I] New source for pbstr
 105  *
 106  * RETURNS
 107  *  Success: 1
 108  *  Failure: 0.
 109  *
 110  * NOTES
 111  *  SysAllocStringStringLen16().
 112  */
 113 INT16 WINAPI SysReAllocString16(LPBSTR16 pbstr,LPCOLESTR16 oleStr)
 114 {
 115         BSTR16 new=SysAllocString16(oleStr);
 116         BSTR_Free(*pbstr);
 117         *pbstr=new;
 118         return 1;
 119 }
 120
 121 /******************************************************************************
 122  *              SysAllocStringLen       [OLE2DISP.4]
 123  *
 124  * Create a BSTR16 from an OLESTR16 of a given character length (16 Bit).
 125  *
 126  * PARAMS
 127  *  oleStr [I] Source to create BSTR16 from
 128  *  len    [I] Length of oleStr in wide characters
 129  *
 130  * RETURNS
 131  *  Success: A newly allocated BSTR16 from SysAllocStringByteLen16()
 132  *  Failure: NULL, if len is >= 0x80000000, or memory allocation fails.
 133  *
 134  * NOTES
 135  *  See SysAllocStringByteLen16().
 136  */
 137 BSTR16 WINAPI SysAllocStringLen16(const char *oleStr, int len)
 138 {
 139         BSTR16 out=BSTR_AllocBytes(len+1);
 140
 141         if (!out)
 142                 return 0;
 143
 144     /*
 145      * Copy the information in the buffer.
 146      * Since it is valid to pass a NULL pointer here, we'll initialize the
 147      * buffer to nul if it is the case.
 148      */
 149     if (oleStr != 0)
 150         strcpy(BSTR_GetAddr(out),oleStr);
 151     else
 152       memset(BSTR_GetAddr(out), 0, len+1);
 153
 154         return out;
 155 }
 156
 157 /******************************************************************************
 158  *              SysReAllocStringLen     [OLE2DISP.5]
 159  *
 160  * Change the length of a previously created BSTR16 (16 Bit).
 161  *
 162  * PARAMS
 163  *  pbstr  [I] BSTR16 to change the length of
 164  *  oleStr [I] New source for pbstr
 165  *  len    [I] Length of oleStr in characters
 166  *
 167  * RETURNS
 168  *  Success: 1. The size of pbstr is updated.
 169  *  Failure: 0, if len >= 0x8000 or memory allocation fails.
 170  *
 171  * NOTES
 172  *  See SysAllocStringByteLen16().
 173  *  *pbstr may be changed by this function.
 174  */
 175 int WINAPI SysReAllocStringLen16(BSTR16 *old,const char *in,int len)
 176 {
 177         /* FIXME: Check input length */
 178         BSTR16 new=SysAllocStringLen16(in,len);
 179         BSTR_Free(*old);
 180         *old=new;
 181         return 1;
 182 }
 183
 184 /******************************************************************************
 185  *              SysFreeString   [OLE2DISP.6]
 186  *
 187  * Free a BSTR16 (16 Bit).
 188  *
 189  * PARAMS
 190  *  str [I] String to free.
 191  *
 192  * RETURNS
 193  *  Nothing.
 194  */
 195 void WINAPI SysFreeString16(BSTR16 str)
 196 {
 197         BSTR_Free(str);
 198 }
 199
 200 /******************************************************************************
 201  *              SysStringLen    [OLE2DISP.7]
 202  *
 203  * Get the allocated length of a BSTR16 in characters (16 Bit).
 204  *
 205  * PARAMS
 206  *  str [I] BSTR16 to find the length of
 207  *
 208  * RETURNS
 209  *  The allocated length of str, or 0 if str is NULL.
 210  */
 211 int WINAPI SysStringLen16(BSTR16 str)
 212 {
 213         return strlen(BSTR_GetAddr(str));
 214 }
 215
 216 /******************************************************************************
 217  * CreateDispTypeInfo [OLE2DISP.31]
 218  */
 219 HRESULT WINAPI CreateDispTypeInfo16(
 220         INTERFACEDATA *pidata,
 221         LCID lcid,
 222         ITypeInfo **pptinfo)
 223 {
 224         FIXME("(%p,%ld,%p),stub\n",pidata,lcid,pptinfo);
 225         return E_NOTIMPL;
 226 }
 227
 228 /******************************************************************************
 229  * CreateStdDispatch [OLE2DISP.32]
 230  */
 231 HRESULT WINAPI CreateStdDispatch16(
 232         IUnknown* punkOuter,
 233         void* pvThis,
 234         ITypeInfo* ptinfo,
 235         IUnknown** ppunkStdDisp)
 236 {
 237         FIXME("(%p,%p,%p,%p),stub\n",punkOuter, pvThis, ptinfo,
 238                ppunkStdDisp);
 239         return 0;
 240 }
 241
 242 /******************************************************************************
 243  * RegisterActiveObject [OLE2DISP.35]
 244  */
 245 HRESULT WINAPI RegisterActiveObject16(
 246         IUnknown *punk, REFCLSID rclsid, DWORD dwFlags, unsigned long *pdwRegister
 247 ) {
 248         FIXME("(%p,%s,0x%08lx,%p):stub\n",punk,debugstr_guid(rclsid),dwFlags,pdwRegister);
 249         return E_NOTIMPL;
 250 }