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wine/ole/ole2disp.c

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/*
* OLE2DISP library
*
* Copyright 1995 Martin von Loewis
*/
#include <string.h>
#include "winerror.h"
#include "ole2.h"
#include "oleauto.h"
#include "wine/obj_base.h"
#include "heap.h"
#include "ldt.h"
#include "debug.h"
DEFAULT_DEBUG_CHANNEL(ole)
/* This implementation of the BSTR API is 16-bit only. It
represents BSTR as a 16:16 far pointer, and the strings
as ISO-8859 */
/******************************************************************************
* BSTR_AllocBytes [Internal]
*/
static BSTR16 BSTR_AllocBytes(int n)
{
void *ptr = SEGPTR_ALLOC(n);
return (BSTR16)SEGPTR_GET(ptr);
}
/******************************************************************************
* BSTR_Free [INTERNAL]
*/
static void BSTR_Free(BSTR16 in)
{
SEGPTR_FREE( PTR_SEG_TO_LIN(in) );
}
/******************************************************************************
* BSTR_GetAddr [INTERNAL]
*/
static void* BSTR_GetAddr(BSTR16 in)
{
return in ? PTR_SEG_TO_LIN(in) : 0;
}
/******************************************************************************
* SysAllocString16 [OLE2DISP.2]
*/
BSTR16 WINAPI SysAllocString16(LPCOLESTR16 in)
{
BSTR16 out=BSTR_AllocBytes(strlen(in)+1);
if(!out)return 0;
strcpy(BSTR_GetAddr(out),in);
return out;
}
/******************************************************************************
* SysAllocString32 [OLEAUT32.2]
*/
BSTR WINAPI SysAllocString(LPCOLESTR in)
{
/* Delegate this to the SysAllocStringLen32 method. */
return SysAllocStringLen(in, lstrlenW(in));
}
/******************************************************************************
* SysReAllocString16 [OLE2DISP.3]
*/
INT16 WINAPI SysReAllocString16(LPBSTR16 old,LPCOLESTR16 in)
{
BSTR16 new=SysAllocString16(in);
BSTR_Free(*old);
*old=new;
return 1;
}
/******************************************************************************
* SysReAllocString32 [OLEAUT32.3]
*/
INT WINAPI SysReAllocString(LPBSTR old,LPCOLESTR in)
{
/*
* Sanity check
*/
if (old==NULL)
return 0;
/*
* Make sure we free the old string.
*/
if (*old!=NULL)
SysFreeString(*old);
/*
* Allocate the new string
*/
*old = SysAllocString(in);
return 1;
}
/******************************************************************************
* SysAllocStringLen16 [OLE2DISP.4]
*/
BSTR16 WINAPI SysAllocStringLen16(const char *in, int len)
{
BSTR16 out=BSTR_AllocBytes(len+1);
if(!out)return 0;
strcpy(BSTR_GetAddr(out),in);
return out;
}
/******************************************************************************
* SysAllocStringLen32 [OLEAUT32.4]
*
* In "Inside OLE, second edition" by Kraig Brockshmidt. In the Automation
* section, he describes the DWORD value placed before the BSTR data type.
* he describes it as a "DWORD count of characters". By experimenting with
* a windows application, this count seems to be a DWORD count of bytes in
* the string. Meaning that the count is double the number of wide
* characters in the string.
*/
BSTR WINAPI SysAllocStringLen(const OLECHAR *in, unsigned int len)
{
DWORD bufferSize;
DWORD* newBuffer;
WCHAR* stringBuffer;
/*
* Find the lenth of the buffer passed-in in bytes.
*/
bufferSize = len * sizeof (WCHAR);
/*
* Allocate a new buffer to hold the string.
* dont't forget to keep an empty spot at the begining of the
* buffer for the character count and an extra character at the
* end for the NULL.
*/
newBuffer = (DWORD*)HeapAlloc(GetProcessHeap(),
0,
bufferSize + sizeof(WCHAR) + sizeof(DWORD));
/*
* If the memory allocation failed, return a null pointer.
*/
if (newBuffer==0)
return 0;
/*
* Copy the length of the string in the placeholder.
*/
*newBuffer = bufferSize;
/*
* Skip the byte count.
*/
newBuffer++;
/*
* Copy the information in the buffer.
* Since it is valid to pass a NULL pointer here, we'll initialize the
* buffer to nul if it is the case.
*/
if (in != 0)
memcpy(newBuffer, in, bufferSize);
else
memset(newBuffer, 0, bufferSize);
/*
* Make sure that there is a nul character at the end of the
* string.
*/
stringBuffer = (WCHAR*)newBuffer;
stringBuffer[len] = L'\0';
return (LPWSTR)stringBuffer;
}
/******************************************************************************
* SysReAllocStringLen16 [OLE2DISP.5]
*/
int WINAPI SysReAllocStringLen16(BSTR16 *old,const char *in,int len)
{
BSTR16 new=SysAllocStringLen16(in,len);
BSTR_Free(*old);
*old=new;
return 1;
}
/******************************************************************************
* SysReAllocStringLen32 [OLEAUT32.5]
*/
int WINAPI SysReAllocStringLen(BSTR* old, const OLECHAR* in, unsigned int len)
{
/*
* Sanity check
*/
if (old==NULL)
return 0;
/*
* Make sure we free the old string.
*/
if (*old!=NULL)
SysFreeString(*old);
/*
* Allocate the new string
*/
*old = SysAllocStringLen(in, len);
return 1;
}
/******************************************************************************
* SysFreeString16 [OLE2DISP.6]
*/
void WINAPI SysFreeString16(BSTR16 in)
{
BSTR_Free(in);
}
/******************************************************************************
* SysFreeString32 [OLEAUT32.6]
*/
void WINAPI SysFreeString(BSTR in)
{
DWORD* bufferPointer;
/* NULL is a valid parameter */
if(!in) return;
/*
* We have to be careful when we free a BSTR pointer, it points to
* the beginning of the string but it skips the byte count contained
* before the string.
*/
bufferPointer = (DWORD*)in;
bufferPointer--;
/*
* Free the memory from it's "real" origin.
*/
HeapFree(GetProcessHeap(), 0, bufferPointer);
}
/******************************************************************************
* SysStringLen16 [OLE2DISP.7]
*/
int WINAPI SysStringLen16(BSTR16 str)
{
return strlen(BSTR_GetAddr(str));
}
/******************************************************************************
* SysStringLen32 [OLEAUT32.7]
*
* The Windows documentation states that the length returned by this function
* is not necessarely the same as the length returned by the _lstrlenW method.
* It is the same number that was passed in as the "len" parameter if the
* string was allocated with a SysAllocStringLen method call.
*/
int WINAPI SysStringLen(BSTR str)
{
DWORD* bufferPointer;
/*
* The length of the string (in bytes) is contained in a DWORD placed
* just before the BSTR pointer
*/
bufferPointer = (DWORD*)str;
bufferPointer--;
return (int)(*bufferPointer/sizeof(WCHAR));
}
/******************************************************************************
* SysStringByteLen [OLEAUT32.149]
*
* The Windows documentation states that the length returned by this function
* is not necessarely the same as the length returned by the _lstrlenW method.
* It is the same number that was passed in as the "len" parameter if the
* string was allocated with a SysAllocStringLen method call.
*/
int WINAPI SysStringByteLen(BSTR str)
{
return SysStringLen(str)*sizeof(WCHAR);
}
/******************************************************************************
* CreateDispTypeInfo [OLE2DISP.31]
*/
HRESULT WINAPI CreateDispTypeInfo16(
INTERFACEDATA *pidata,
LCID lcid,
ITypeInfo **pptinfo
) {
FIXME(ole,"(%p,%ld,%p),stub\n",pidata,lcid,pptinfo);
return 0;
}
/******************************************************************************
* RegisterActiveObject [OLE2DISP.35]
*/
HRESULT WINAPI RegisterActiveObject16(
IUnknown *punk, REFCLSID rclsid, DWORD dwFlags, unsigned long *pdwRegister
) {
char buf[80];
WINE_StringFromCLSID(rclsid,buf);
FIXME(ole,"(%p,%s,0x%08lx,%p):stub\n",punk,buf,dwFlags,pdwRegister);
return 0;
}
/******************************************************************************
* OleTranslateColor [OLEAUT32.421]
*
* Converts an OLE_COLOR to a COLORREF.
* See the documentation for conversion rules.
* pColorRef can be NULL. In that case the user only wants to test the
* conversion.
*/
INT WINAPI OleTranslateColor(
LONG clr,
HPALETTE hpal,
COLORREF* pColorRef)
{
COLORREF colorref;
BYTE b = HIBYTE(HIWORD(clr));
TRACE(ole,"(%08lx, %d, %p):stub\n", clr, hpal, pColorRef);
/*
* In case pColorRef is NULL, provide our own to simplify the code.
*/
if (pColorRef == NULL)
pColorRef = &colorref;
switch (b)
{
case 0x00:
{
if (hpal != 0)
*pColorRef = PALETTERGB(GetRValue(clr),
GetGValue(clr),
GetBValue(clr));
else
*pColorRef = clr;
break;
}
case 0x01:
{
if (hpal != 0)
{
PALETTEENTRY pe;
/*
* Validate the palette index.
*/
if (GetPaletteEntries(hpal, LOWORD(clr), 1, &pe) == 0)
return E_INVALIDARG;
}
*pColorRef = clr;
break;
}
case 0x02:
*pColorRef = clr;
break;
case 0x80:
{
int index = LOBYTE(LOWORD(clr));
/*
* Validate GetSysColor index.
*/
if ((index < COLOR_SCROLLBAR) || (index > COLOR_GRADIENTINACTIVECAPTION))
return E_INVALIDARG;
*pColorRef = GetSysColor(index);
break;
}
default:
return E_INVALIDARG;
}
return S_OK;
}
/******************************************************************************
* SysAllocStringByteLen [OLEAUT32.150]
*
*/
BSTR WINAPI SysAllocStringByteLen(char *in, int len)
{
DWORD* newBuffer;
char* stringBuffer;
/*
* Allocate a new buffer to hold the string.
* dont't forget to keep an empty spot at the begining of the
* buffer for the character count and an extra character at the
* end for the NULL.
*/
newBuffer = (DWORD*)HeapAlloc(GetProcessHeap(),
0,
len + sizeof(WCHAR) + sizeof(DWORD));
/*
* If the memory allocation failed, return a null pointer.
*/
if (newBuffer==0)
return 0;
/*
* Copy the length of the string in the placeholder.
*/
*newBuffer = len;
/*
* Skip the byte count.
*/
newBuffer++;
/*
* Copy the information in the buffer.
* Since it is valid to pass a NULL pointer here, we'll initialize the
* buffer to nul if it is the case.
*/
if (in != 0)
memcpy(newBuffer, in, len);
/*
* Make sure that there is a nul character at the end of the
* string.
*/
stringBuffer = (char *)newBuffer;
stringBuffer[len] = 0;
stringBuffer[len+1] = 0;
return (LPWSTR)stringBuffer;
}
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