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