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// file : butl/win32-utility.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <butl/win32-utility>
// Note that while we exclude it from the buildfile-based builds, we still
// need these guards for build2 bootstrap.
//
#ifdef _WIN32
#include <memory> // unique_ptr
using namespace std;
namespace butl
{
namespace win32
{
struct msg_deleter
{
void operator() (char* p) const {LocalFree (p);}
};
string
error_msg (DWORD code)
{
char* msg;
if (!FormatMessageA (
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS |
FORMAT_MESSAGE_MAX_WIDTH_MASK,
0,
code,
MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
(char*)&msg,
0,
0))
return "unknown error code " + to_string (code);
unique_ptr<char, msg_deleter> m (msg);
return msg;
}
string
last_error_msg ()
{
return error_msg (GetLastError ());
}
}
}
#endif // _WIN32
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