mirror of
https://github.com/reactos/reactos.git
synced 2024-06-01 02:01:57 +00:00
137 lines
3.3 KiB
C++
137 lines
3.3 KiB
C++
/*
|
|
* PROJECT: ReactOS crt library
|
|
* LICENSE: BSD-2-Clause (https://spdx.org/licenses/BSD-2-Clause)
|
|
* PURPOSE: Compiler support for COM
|
|
* COPYRIGHT: Copyright 2013 Thomas Faber (thomas.faber@reactos.org)
|
|
* Copyright 2015 Hermès Bélusca-Maïto (hermes.belusca-maito@reactos.org)
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
|
|
#define WIN32_NO_STATUS
|
|
#define _INC_WINDOWS
|
|
|
|
#include <windef.h>
|
|
#include <winbase.h>
|
|
#include <comdef.h>
|
|
|
|
/* comdef.h */
|
|
typedef void WINAPI COM_ERROR_HANDLER(HRESULT, IErrorInfo *);
|
|
static COM_ERROR_HANDLER *com_error_handler;
|
|
|
|
void WINAPI _com_raise_error(HRESULT hr, IErrorInfo *perrinfo)
|
|
{
|
|
throw _com_error(hr, perrinfo);
|
|
}
|
|
|
|
void WINAPI _set_com_error_handler(COM_ERROR_HANDLER *phandler)
|
|
{
|
|
com_error_handler = phandler;
|
|
}
|
|
|
|
void WINAPI _com_issue_error(HRESULT hr)
|
|
{
|
|
com_error_handler(hr, NULL);
|
|
}
|
|
|
|
void WINAPI _com_issue_errorex(HRESULT hr, IUnknown *punk, REFIID riid)
|
|
{
|
|
void *pv;
|
|
IErrorInfo *perrinfo = NULL;
|
|
|
|
if (SUCCEEDED(punk->QueryInterface(riid, &pv)))
|
|
{
|
|
ISupportErrorInfo *pserrinfo = static_cast<ISupportErrorInfo *>(pv);
|
|
if (pserrinfo->InterfaceSupportsErrorInfo(riid) == S_OK)
|
|
(void)GetErrorInfo(0, &perrinfo);
|
|
pserrinfo->Release();
|
|
}
|
|
|
|
com_error_handler(hr, perrinfo);
|
|
}
|
|
|
|
/* comutil.h */
|
|
_variant_t vtMissing(DISP_E_PARAMNOTFOUND, VT_ERROR);
|
|
|
|
namespace _com_util
|
|
{
|
|
|
|
BSTR WINAPI ConvertStringToBSTR(const char *pSrc)
|
|
{
|
|
DWORD cwch;
|
|
BSTR wsOut(NULL);
|
|
|
|
if (!pSrc) return NULL;
|
|
|
|
/* Compute the needed size with the NULL terminator */
|
|
cwch = ::MultiByteToWideChar(CP_ACP, 0, pSrc, -1, NULL, 0);
|
|
if (cwch == 0) return NULL;
|
|
|
|
/* Allocate the BSTR (without the NULL terminator) */
|
|
wsOut = ::SysAllocStringLen(NULL, cwch - 1);
|
|
if (!wsOut)
|
|
{
|
|
::_com_issue_error(HRESULT_FROM_WIN32(ERROR_OUTOFMEMORY));
|
|
return NULL;
|
|
}
|
|
|
|
/* Convert the string */
|
|
if (::MultiByteToWideChar(CP_ACP, 0, pSrc, -1, wsOut, cwch) == 0)
|
|
{
|
|
/* We failed, clean everything up */
|
|
cwch = ::GetLastError();
|
|
|
|
::SysFreeString(wsOut);
|
|
wsOut = NULL;
|
|
|
|
::_com_issue_error(!IS_ERROR(cwch) ? HRESULT_FROM_WIN32(cwch) : cwch);
|
|
}
|
|
|
|
return wsOut;
|
|
}
|
|
|
|
char* WINAPI ConvertBSTRToString(BSTR pSrc)
|
|
{
|
|
DWORD cb, cwch;
|
|
char *szOut = NULL;
|
|
|
|
if (!pSrc) return NULL;
|
|
|
|
/* Retrieve the size of the BSTR with the NULL terminator */
|
|
cwch = ::SysStringLen(pSrc) + 1;
|
|
|
|
/* Compute the needed size with the NULL terminator */
|
|
cb = ::WideCharToMultiByte(CP_ACP, 0, pSrc, cwch, NULL, 0, NULL, NULL);
|
|
if (cb == 0)
|
|
{
|
|
cwch = ::GetLastError();
|
|
::_com_issue_error(!IS_ERROR(cwch) ? HRESULT_FROM_WIN32(cwch) : cwch);
|
|
return NULL;
|
|
}
|
|
|
|
/* Allocate the string */
|
|
szOut = (char*)::operator new(cb * sizeof(char));
|
|
if (!szOut)
|
|
{
|
|
::_com_issue_error(HRESULT_FROM_WIN32(ERROR_OUTOFMEMORY));
|
|
return NULL;
|
|
}
|
|
|
|
/* Convert the string and NULL-terminate */
|
|
szOut[cb - 1] = '\0';
|
|
if (::WideCharToMultiByte(CP_ACP, 0, pSrc, cwch, szOut, cb, NULL, NULL) == 0)
|
|
{
|
|
/* We failed, clean everything up */
|
|
cwch = ::GetLastError();
|
|
|
|
::operator delete(szOut);
|
|
szOut = NULL;
|
|
|
|
::_com_issue_error(!IS_ERROR(cwch) ? HRESULT_FROM_WIN32(cwch) : cwch);
|
|
}
|
|
|
|
return szOut;
|
|
}
|
|
|
|
}
|