Ticket #5769: fstest.cpp

#include <iostream>

#include <memory>

#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>

#include <windows.h>

void explain (std::string what) {
        DWORD e = GetLastError ();

        std::cerr << what << ": ";

        DWORD r;
        std::shared_ptr<char> buf;
        {
                LPSTR buf_;
                r = FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER
                                | FORMAT_MESSAGE_FROM_SYSTEM
                                | FORMAT_MESSAGE_IGNORE_INSERTS,
                        0,
                        e,
                        MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
                        reinterpret_cast<LPSTR> (&buf_), 0,
                        0);
                buf.reset (buf_, LocalFree);
        }

        if (r) {
                char* end = buf.get () + std::strlen (buf.get ());
                if (std::distance (buf.get (), end) >= 2 && *(end-2) == '\r' && *(end-1) == '\n')
                        end -= 2;
                std::copy (buf.get (), end, std::ostream_iterator<char> (std::cerr));
        }
        else
                std::cerr << "?[" << GetLastError () << "]";

        std::cerr << " (" << e << ")\n";
}

int main () {
        using namespace boost::filesystem;

        path p = L"umbre☂☂a";

        HANDLE fh = CreateFileW (p.c_str (), GENERIC_WRITE, 0, 0, CREATE_NEW, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_DELETE_ON_CLOSE, 0);
        if (fh == INVALID_HANDLE_VALUE)
                explain ("CreateFileW");
        else {
                if (!CloseHandle (fh)) {
                        explain ("CloseHandle");
                        return 1;
                }
        }

        ofstream f (p, ofstream::out);
        if (!f) {
                explain ("ofstream");
                return 1;
        }

        f << "blah blah\n";
        f.close ();
        if (!f) {
                explain ("close");
                return 1;
        }
}

// vim: ts=4 sw=4 noet