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#include <stdexcept>
#include <memory>
#include <windows.h>
#include <SWI-Prolog.h>
#include "common.h"
/* Convert normal string to TSTR using given codepage. */
std::basic_string<TCHAR> TsmFromSz(const char *sz, int iCp)
{
#ifdef UNICODE
int cbMultiByte, cchWideChar;
cbMultiByte = strlen(sz)+1;
cchWideChar = MultiByteToWideChar(iCp, 0, sz, cbMultiByte, NULL, 0);
std::wstring wsm(cchWideChar, 0);
if (!MultiByteToWideChar(iCp, 0, sz, cbMultiByte, wsm.data(), cchWideChar))
throw Win32Error(GetLastError());
return wsm;
#else
return std::string(sz);
#endif
}
Win32Error::Win32Error(DWORD dwErr)
{
m_dwErr = dwErr;
FormatMessageA(
FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
m_dwErr,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPSTR)&m_szMsg,
0, NULL
);
}
Win32Error::~Win32Error()
{
if (m_szMsg)
HeapFree(GetProcessHeap(), 0, m_szMsg);
}
const char *Win32Error::what(void) const noexcept
{
return m_szMsg;
}
Library::Library(const TCHAR *tszLibrary)
{
m_hModule = LoadLibrary(tszLibrary);
if (!m_hModule)
throw Win32Error(GetLastError());
}
Library::~Library()
{
FreeLibrary(m_hModule);
}
FARPROC Library::GetProcAddress(const char *szProc)
{
return ::GetProcAddress(m_hModule, szProc);
}
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