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nix/subprojects/libutil/windows/windows-error.cc
John Ericson 84e2963f8e Move /src to /subprojects
This will facilitate breaking up Nix into multiple packages for each
component with Meson.
2024-10-09 17:38:55 -04:00

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1 KiB
C++

#include "windows-error.hh"
#include <error.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
namespace nix::windows {
std::string WinError::renderError(DWORD lastError)
{
LPSTR errorText = NULL;
FormatMessageA( FORMAT_MESSAGE_FROM_SYSTEM // use system message tables to retrieve error text
|FORMAT_MESSAGE_ALLOCATE_BUFFER // allocate buffer on local heap for error text
|FORMAT_MESSAGE_IGNORE_INSERTS, // Important! will fail otherwise, since we're not (and CANNOT) pass insertion parameters
NULL, // unused with FORMAT_MESSAGE_FROM_SYSTEM
lastError,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR)&errorText, // output
0, // minimum size for output buffer
NULL); // arguments - see note
if (NULL != errorText ) {
std::string s2 { errorText };
LocalFree(errorText);
return s2;
}
return fmt("CODE=%d", lastError);
}
}