4 * Copyright 1995 Martin von Loewis
14 #include "wine/obj_base.h"
20 /* This implementation of the BSTR API is 16-bit only. It
21 represents BSTR as a 16:16 far pointer, and the strings
24 /******************************************************************************
25 * BSTR_AllocBytes [Internal]
27 static BSTR16 BSTR_AllocBytes(int n)
29 void *ptr = SEGPTR_ALLOC(n);
30 return (BSTR16)SEGPTR_GET(ptr);
33 /******************************************************************************
34 * BSTR_Free [INTERNAL]
36 static void BSTR_Free(BSTR16 in)
38 SEGPTR_FREE( PTR_SEG_TO_LIN(in) );
41 /******************************************************************************
42 * BSTR_GetAddr [INTERNAL]
44 static void* BSTR_GetAddr(BSTR16 in)
46 return in ? PTR_SEG_TO_LIN(in) : 0;
49 /******************************************************************************
50 * SysAllocString16 [OLE2DISP.2]
52 BSTR16 WINAPI SysAllocString16(LPOLESTR16 in)
54 BSTR16 out=BSTR_AllocBytes(strlen(in)+1);
56 strcpy(BSTR_GetAddr(out),in);
60 /******************************************************************************
61 * SysAllocString32 [OLEAUT32.2]
63 BSTR32 WINAPI SysAllocString32(LPOLESTR32 in)
65 /* Delegate this to the SysAllocStringLen32 method. */
66 return SysAllocStringLen32(in, lstrlen32W(in));
69 /******************************************************************************
70 * SysReAllocString16 [OLE2DISP.3]
72 INT16 WINAPI SysReAllocString16(LPBSTR16 old,LPOLESTR16 in)
74 BSTR16 new=SysAllocString16(in);
80 /******************************************************************************
81 * SysReAllocString32 [OLEAUT32.3]
83 INT32 WINAPI SysReAllocString32(LPBSTR32 old,LPOLESTR32 in)
92 * Make sure we free the old string.
95 SysFreeString32(*old);
98 * Allocate the new string
100 *old = SysAllocString32(in);
105 /******************************************************************************
106 * SysAllocStringLen16 [OLE2DISP.4]
108 BSTR16 WINAPI SysAllocStringLen16(char *in, int len)
110 BSTR16 out=BSTR_AllocBytes(len+1);
112 strcpy(BSTR_GetAddr(out),in);
116 /******************************************************************************
117 * SysAllocStringLen32 [OLEAUT32.4]
119 * In "Inside OLE, second edition" by Kraig Brockshmidt. In the Automation
120 * section, he describes the DWORD value placed before the BSTR data type.
121 * he describes it as a "DWORD count of characters". By experimenting with
122 * a windows application, this count seems to be a DWORD count of bytes in
123 * the string. Meaning that the count is double the number of wide
124 * characters in the string.
126 BSTR32 WINAPI SysAllocStringLen32(WCHAR *in, int len)
133 * Find the lenth of the buffer passed-in in bytes.
135 bufferSize = len * sizeof (WCHAR);
138 * Allocate a new buffer to hold the string.
139 * dont't forget to keep an empty spot at the begining of the
140 * buffer for the character count and an extra character at the
143 newBuffer = (DWORD*)HeapAlloc(GetProcessHeap(),
145 bufferSize + sizeof(WCHAR) + sizeof(DWORD));
148 * If the memory allocation failed, return a null pointer.
154 * Copy the length of the string in the placeholder.
156 *newBuffer = bufferSize;
159 * Skip the byte count.
164 * Copy the information in the buffer.
165 * Since it is valid to pass a NULL pointer here, we'll initialize the
166 * buffer to nul if it is the case.
169 memcpy(newBuffer, in, bufferSize);
171 memset(newBuffer, 0, bufferSize);
174 * Make sure that there is a nul character at the end of the
177 stringBuffer = (WCHAR*)newBuffer;
178 stringBuffer[len] = L'\0';
180 return (LPWSTR)stringBuffer;
183 /******************************************************************************
184 * SysReAllocStringLen16 [OLE2DISP.5]
186 int WINAPI SysReAllocStringLen16(BSTR16 *old,char *in,int len)
188 BSTR16 new=SysAllocStringLen16(in,len);
195 /******************************************************************************
196 * SysReAllocStringLen32 [OLEAUT32.5]
198 int WINAPI SysReAllocStringLen32(BSTR32* old, WCHAR* in, int len)
207 * Make sure we free the old string.
210 SysFreeString32(*old);
213 * Allocate the new string
215 *old = SysAllocStringLen32(in, len);
220 /******************************************************************************
221 * SysFreeString16 [OLE2DISP.6]
223 void WINAPI SysFreeString16(BSTR16 in)
228 /******************************************************************************
229 * SysFreeString32 [OLEAUT32.6]
231 void WINAPI SysFreeString32(BSTR32 in)
233 DWORD* bufferPointer;
236 * We have to be careful when we free a BSTR pointer, it points to
237 * the beginning of the string but it skips the byte count contained
240 bufferPointer = (DWORD*)in;
245 * Free the memory from it's "real" origin.
247 HeapFree(GetProcessHeap(), 0, bufferPointer);
250 /******************************************************************************
251 * SysStringLen16 [OLE2DISP.7]
253 int WINAPI SysStringLen16(BSTR16 str)
255 return strlen(BSTR_GetAddr(str));
258 /******************************************************************************
259 * SysStringLen32 [OLEAUT32.7]
261 * The Windows documentation states that the length returned by this function
262 * is not necessarely the same as the length returned by the _lstrlenW method.
263 * It is the same number that was passed in as the "len" parameter if the
264 * string was allocated with a SysAllocStringLen method call.
266 int WINAPI SysStringLen32(BSTR32 str)
268 DWORD* bufferPointer;
271 * The length of the string (in bytes) is contained in a DWORD placed
272 * just before the BSTR pointer
274 bufferPointer = (DWORD*)str;
278 return (int)(*bufferPointer/sizeof(WCHAR));
281 /******************************************************************************
282 * SysStringByteLen [OLEAUT32.149]
284 * The Windows documentation states that the length returned by this function
285 * is not necessarely the same as the length returned by the _lstrlenW method.
286 * It is the same number that was passed in as the "len" parameter if the
287 * string was allocated with a SysAllocStringLen method call.
289 int WINAPI SysStringByteLen(BSTR32 str)
291 return SysStringLen32(str)*sizeof(WCHAR);
294 /******************************************************************************
295 * CreateDispTypeInfo [OLE2DISP.31]
297 OLESTATUS WINAPI CreateDispTypeInfo(
298 INTERFACEDATA *pidata,
300 LPVOID **pptinfo /*ITypeInfo*/
302 FIXME(ole,"(%p,%ld,%p),stub\n",pidata,lcid,pptinfo);
306 /******************************************************************************
307 * RegisterActiveObject [OLE2DISP.35]
309 OLESTATUS WINAPI RegisterActiveObject(
310 IUnknown * punk,REFCLSID rclsid,DWORD dwFlags, DWORD * pdwRegister
313 WINE_StringFromCLSID(rclsid,buf);
314 FIXME(ole,"(%p,%s,0x%08lx,%p):stub\n",punk,buf,dwFlags,pdwRegister);
318 /******************************************************************************
319 * OleTranslateColor [OLEAUT32.421]
321 INT32 WINAPI OleTranslateColor(
326 FIXME(ole,"():stub\n");