C++ GetFileAttributesW函数代码示例

/*
 * Helper function for search_path
 */
static WCHAR* search_path_join_test(const WCHAR* dir,
                                      int dir_len,
                                      const WCHAR* name,
                                      int name_len,
                                      const WCHAR* ext,
                                      int ext_len,
                                      const WCHAR* cwd,
                                      int cwd_len) {
  WCHAR *result, *result_pos;
  DWORD attrs;

  if (dir_len >= 1 && (dir[0] == L'/' || dir[0] == L'\\')) {
    /* It's a full path without drive letter, use cwd's drive letter only */
    cwd_len = 2;
  } else if (dir_len >= 2 && dir[1] == L':' &&
      (dir_len < 3 || (dir[2] != L'/' && dir[2] != L'\\'))) {
    /* It's a relative path with drive letter (ext.g. D:../some/file)
     * Replace drive letter in dir by full cwd if it points to the same drive,
     * otherwise use the dir only.
     */
    if (cwd_len < 2 || _wcsnicmp(cwd, dir, 2) != 0) {
      cwd_len = 0;
    } else {
      dir += 2;
      dir_len -= 2;
    }
  } else if (dir_len > 2 && dir[1] == L':') {
    /* It's an absolute path with drive letter
     * Don't use the cwd at all
     */
    cwd_len = 0;
  }

  /* Allocate buffer for output */
  result = result_pos = (WCHAR*)malloc(sizeof(WCHAR) *
      (cwd_len + 1 + dir_len + 1 + name_len + 1 + ext_len + 1));

  /* Copy cwd */
  wcsncpy(result_pos, cwd, cwd_len);
  result_pos += cwd_len;

  /* Add a path separator if cwd didn't end with one */
  if (cwd_len && wcsrchr(L"\\/:", result_pos[-1]) == NULL) {
    result_pos[0] = L'\\';
    result_pos++;
  }

  /* Copy dir */
  wcsncpy(result_pos, dir, dir_len);
  result_pos += dir_len;

  /* Add a separator if the dir didn't end with one */
  if (dir_len && wcsrchr(L"\\/:", result_pos[-1]) == NULL) {
    result_pos[0] = L'\\';
    result_pos++;
  }

  /* Copy filename */
  wcsncpy(result_pos, name, name_len);
  result_pos += name_len;

  if (ext_len) {
    /* Add a dot if the filename didn't end with one */
    if (name_len && result_pos[-1] != '.') {
      result_pos[0] = L'.';
      result_pos++;
    }

    /* Copy extension */
    wcsncpy(result_pos, ext, ext_len);
    result_pos += ext_len;
  }

  /* Null terminator */
  result_pos[0] = L'\0';

  attrs = GetFileAttributesW(result);

  if (attrs != INVALID_FILE_ATTRIBUTES &&
     !(attrs & (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT))) {
    return result;
  }

  free(result);
  return NULL;
}

static LPWSTR app_search_file(LPWSTR path, MSISIGNATURE *sig)
{
    VS_FIXEDFILEINFO *info;
    DWORD attr, handle, size;
    LPWSTR val = NULL;
    LPBYTE buffer;

    if (!sig->File)
    {
        PathRemoveFileSpecW(path);
        PathAddBackslashW(path);

        attr = GetFileAttributesW(path);
        if (attr != INVALID_FILE_ATTRIBUTES &&
            (attr & FILE_ATTRIBUTE_DIRECTORY))
            return strdupW(path);

        return NULL;
    }

    attr = GetFileAttributesW(path);
    if (attr == INVALID_FILE_ATTRIBUTES ||
        (attr & FILE_ATTRIBUTE_DIRECTORY))
        return NULL;

    size = GetFileVersionInfoSizeW(path, &handle);
    if (!size)
        return strdupW(path);

    buffer = msi_alloc(size);
    if (!buffer)
        return NULL;

    if (!GetFileVersionInfoW(path, 0, size, buffer))
        goto done;

    if (!VerQueryValueW(buffer, szBackSlash, (LPVOID)&info, &size) || !info)
        goto done;

    if (sig->MinVersionLS || sig->MinVersionMS)
    {
        if (info->dwFileVersionMS < sig->MinVersionMS)
            goto done;

        if (info->dwFileVersionMS == sig->MinVersionMS &&
            info->dwFileVersionLS < sig->MinVersionLS)
            goto done;
    }

    if (sig->MaxVersionLS || sig->MaxVersionMS)
    {
        if (info->dwFileVersionMS > sig->MaxVersionMS)
            goto done;

        if (info->dwFileVersionMS == sig->MaxVersionMS &&
            info->dwFileVersionLS > sig->MaxVersionLS)
            goto done;
    }

    val = strdupW(path);

done:
    msi_free(buffer);
    return val;
}

static UINT ACTION_SearchDirectory(MSIPACKAGE *package, MSISIGNATURE *sig,
 LPCWSTR path, int depth, LPWSTR *appValue)
{
    UINT rc;
    DWORD attr;
    LPWSTR val = NULL;

    TRACE("%p, %p, %s, %d, %p\n", package, sig, debugstr_w(path), depth,
     appValue);

    if (ACTION_IsFullPath(path))
    {
        if (sig->File)
            rc = ACTION_RecurseSearchDirectory(package, &val, sig, path, depth);
        else
        {
            /* Recursively searching a directory makes no sense when the
             * directory to search is the thing you're trying to find.
             */
            rc = ACTION_CheckDirectory(package, path, &val);
        }
    }
    else
    {
        WCHAR pathWithDrive[MAX_PATH] = { 'C',':','\\',0 };
        DWORD drives = GetLogicalDrives();
        int i;

        rc = ERROR_SUCCESS;
        for (i = 0; rc == ERROR_SUCCESS && !val && i < 26; i++)
        {
            if (!(drives & (1 << i)))
                continue;

            pathWithDrive[0] = 'A' + i;
            if (GetDriveTypeW(pathWithDrive) != DRIVE_FIXED)
                continue;

            lstrcpynW(pathWithDrive + 3, path,
                      sizeof(pathWithDrive) / sizeof(pathWithDrive[0]) - 3);

            if (sig->File)
                rc = ACTION_RecurseSearchDirectory(package, &val, sig,
                                                   pathWithDrive, depth);
            else
                rc = ACTION_CheckDirectory(package, pathWithDrive, &val);
        }
    }

    attr = GetFileAttributesW(val);
    if (attr != INVALID_FILE_ATTRIBUTES &&
        (attr & FILE_ATTRIBUTE_DIRECTORY) &&
        val && val[lstrlenW(val) - 1] != '\\')
    {
        val = msi_realloc(val, (lstrlenW(val) + 2) * sizeof(WCHAR));
        if (!val)
            rc = ERROR_OUTOFMEMORY;
        else
            PathAddBackslashW(val);
    }

    *appValue = val;

    TRACE("returning %d\n", rc);
    return rc;
}

/**
 * Yet another inline helper for determining whether
 * a given path has the SYSTEM attribute flagged on it.
 */
static inline bool has_system_attr(wchar_t* path)
{
	return GetFileAttributesW(path) & FILE_ATTRIBUTE_SYSTEM;
}

GamePlayer::GamePlayer(HINSTANCE _hInstance, HINSTANCE _hPrevInstance, LPSTR _lpCmdLine, int _nCmdShow,int width,int height)
{
	hInstance=_hInstance;
	hPrevInstance=_hPrevInstance;
	lpCmdLine=_lpCmdLine;
	nCmdShow=_nCmdShow;
	pWndClassName  = L"RGSSX Player";
	pDefaultLibrary = L"RGSS300.dll";
	pDefaultTitle  = L"Untitled";
	pDefaultScripts = L"Data\\Scripts.rvdata2";
	nScreenWidth = width;
	nScreenHeight = height;
	nEvalErrorCode = 6;
	g_hWnd = NULL;
	DWORD len = ::GetModuleFileNameW(hInstance, szAppPath, MAX_PATH);
	for (--len; len > 0; --len)
	{
		if (szAppPath[len] == L'\\' || szAppPath[len] == L'/')
		{
			szAppPath[len] = 0;
			break;
		}
	}
	::SetCurrentDirectoryW(szAppPath);
	// ini文件路径
	len = ::GetModuleFileNameW(hInstance, szIniPath, MAX_PATH);
	szIniPath[len - 1] = L'i';
	szIniPath[len - 2] = L'n';
	szIniPath[len - 3] = L'i';

	// 加密包路径
	len = ::GetModuleFileNameW(hInstance, szRgssadPath, MAX_PATH);
	for (--len; len > 0; --len)
	{
		if (szRgssadPath[len] == L'.')
		{
			szRgssadPath[len + 1] = L'r';
			szRgssadPath[len + 2] = L'g';
			szRgssadPath[len + 3] = L's';
			szRgssadPath[len + 4] = L's';
			szRgssadPath[len + 5] = L'3';
			szRgssadPath[len + 6] = L'a';
			szRgssadPath[len + 7] = 0;
			break;
		}
	}

	// ini文件存在
	if (GetFileAttributesW(szIniPath) != INVALID_FILE_ATTRIBUTES)
	{
		//GetPrivateProfileStringW(L"Game", L"Library2", pDefaultLibrary, szLibrary, MAX_PATH, szIniPath);
		wcscpy_s(szLibrary, pDefaultLibrary);
		GetPrivateProfileStringW(L"Game", L"Title",  pDefaultTitle,   szTitle, MAX_PATH, szIniPath);
		//GetPrivateProfileStringW(L"Game", L"Scripts", pDefaultScripts, szScripts, MAX_PATH, szIniPath);
		wcscpy_s(szScripts, pDefaultScripts);
	}
	else
	{
		wcscpy_s(szLibrary, pDefaultLibrary);
		wcscpy_s(szTitle, pDefaultTitle);
		wcscpy_s(szScripts, pDefaultScripts);
	}

	if (GetFileAttributesW(szRgssadPath) != INVALID_FILE_ATTRIBUTES)
		pRgssad = szRgssadPath;

}

PRBool
GRE_GetPathFromRegKey(HKEY aRegKey,
                      const GREVersionRange *versions,
                      PRUint32 versionsLength,
                      const GREProperty *properties,
                      PRUint32 propertiesLength,
                      char* aBuffer, PRUint32 aBufLen)
{
  // Formerly, GREs were registered at the registry key
  // HKLM/Software/mozilla.org/GRE/<version> valuepair GreHome=Path.
  // Nowadays, they are registered in any subkey of
  // Software/mozilla.org/GRE, with the following valuepairs:
  //   Version=<version> (REG_SZ)
  //   GreHome=<path>    (REG_SZ or REG_EXPAND_SZ)
  //   <Property>=<value> (REG_SZ)
  //
  // Additional meta-info may be available in the future, including
  // localization info and other information which might be pertinent
  // to selecting one GRE over another.
  //
  // When a GRE is being registered, it should try to register itself at
  // HKLM/Software/mozilla.org/GRE/<Version> first, to preserve compatibility
  // with older glue. If this key is already taken (i.e. there is more than
  // one GRE of that version installed), it should append a unique number to
  // the version, for example:
  //   1.1 (already in use), 1.1_1, 1.1_2, etc...

  DWORD i = 0;
  PRUnichar buffer[MAXPATHLEN + 1];

  while (PR_TRUE) {
    PRUnichar name[MAXPATHLEN + 1];
    DWORD nameLen = MAXPATHLEN;
    if (::RegEnumKeyExW(aRegKey, i, name, &nameLen, NULL, NULL, NULL, NULL) !=
          ERROR_SUCCESS) {
        break;
    }

    HKEY subKey = NULL;
    if (::RegOpenKeyExW(aRegKey, name, 0, KEY_QUERY_VALUE, &subKey) !=
          ERROR_SUCCESS) {
        continue;
    }

    PRUnichar version[40];
    DWORD versionlen = 40;
    PRUnichar pathbuf[MAXPATHLEN + 1];
    DWORD pathlen;
    DWORD pathtype;

    PRBool ok = PR_FALSE;

    if (::RegQueryValueExW(subKey, L"Version", NULL, NULL,
                           (BYTE*) version, &versionlen) == ERROR_SUCCESS &&
          CheckVersion(version, versions, versionsLength)) {

      ok = PR_TRUE;
      const GREProperty *props = properties;
      const GREProperty *propsEnd = properties + propertiesLength;
      for (; ok && props < propsEnd; ++props) {
        pathlen = MAXPATHLEN + 1;

        AutoWString wproperty(ConvertUTF8toNewUTF16(props->property));
        AutoWString wvalue(ConvertUTF8toNewUTF16(props->value));
        if (::RegQueryValueExW(subKey, wproperty, NULL, &pathtype,
                               (BYTE*) pathbuf, &pathlen) != ERROR_SUCCESS ||
            wcscmp(pathbuf,  wvalue))
            ok = PR_FALSE;
      }

      pathlen = sizeof(pathbuf);
      if (ok &&
          (!::RegQueryValueExW(subKey, L"GreHome", NULL, &pathtype,
                              (BYTE*) pathbuf, &pathlen) == ERROR_SUCCESS ||
           !*pathbuf ||
           !CopyWithEnvExpansion(buffer, pathbuf, MAXPATHLEN, pathtype))) {
        ok = PR_FALSE;
      }
      else if (!wcsncat(buffer, L"\\" LXPCOM_DLL, aBufLen) 
#ifdef WINCE
               || (GetFileAttributesW(buffer) == INVALID_FILE_ATTRIBUTES)
#else
               || _waccess(buffer, R_OK)
#endif
               ) {
        ok = PR_FALSE;
      }
    }

    RegCloseKey(subKey);

    if (ok) {
      WideCharToMultiByte(CP_UTF8, 0, buffer, -1, aBuffer, aBufLen, NULL, NULL);
      return PR_TRUE;
    }

    ++i;
  }

  aBuffer[0] = '\0';
//.........这里部分代码省略.........

static HRESULT WINAPI IAssemblyCacheImpl_InstallAssembly(IAssemblyCache *iface,
                                                         DWORD dwFlags,
                                                         LPCWSTR pszManifestFilePath,
                                                         LPCFUSION_INSTALL_REFERENCE pRefData)
{
    static const WCHAR format[] =
        {'%','s','\\','%','s','\\','%','s','_','_','%','s','\\',0};

    ASSEMBLY *assembly;
    LPWSTR filename;
    LPWSTR name = NULL;
    LPWSTR token = NULL;
    LPWSTR version = NULL;
    LPWSTR asmpath = NULL;
    WCHAR path[MAX_PATH];
    WCHAR asmdir[MAX_PATH];
    LPWSTR ext;
    HRESULT hr;

    static const WCHAR ext_exe[] = {'.','e','x','e',0};
    static const WCHAR ext_dll[] = {'.','d','l','l',0};

    TRACE("(%p, %d, %s, %p)\n", iface, dwFlags,
          debugstr_w(pszManifestFilePath), pRefData);

    if (!pszManifestFilePath || !*pszManifestFilePath)
        return E_INVALIDARG;

    if (!(ext = strrchrW(pszManifestFilePath, '.')))
        return HRESULT_FROM_WIN32(ERROR_INVALID_NAME);

    if (lstrcmpiW(ext, ext_exe) && lstrcmpiW(ext, ext_dll))
        return HRESULT_FROM_WIN32(ERROR_INVALID_NAME);

    if (GetFileAttributesW(pszManifestFilePath) == INVALID_FILE_ATTRIBUTES)
        return HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);

    hr = assembly_create(&assembly, pszManifestFilePath);
    if (FAILED(hr))
    {
        hr = COR_E_ASSEMBLYEXPECTED;
        goto done;
    }

    hr = assembly_get_name(assembly, &name);
    if (FAILED(hr))
        goto done;

    hr = assembly_get_pubkey_token(assembly, &token);
    if (FAILED(hr))
        goto done;

    hr = assembly_get_version(assembly, &version);
    if (FAILED(hr))
        goto done;

    get_assembly_directory(asmdir, MAX_PATH, assembly_get_architecture(assembly));

    sprintfW(path, format, asmdir, name, version, token);

    create_full_path(path);

    hr = assembly_get_path(assembly, &asmpath);
    if (FAILED(hr))
        goto done;

    filename = PathFindFileNameW(asmpath);

    strcatW(path, filename);
    if (!CopyFileW(asmpath, path, FALSE))
        hr = HRESULT_FROM_WIN32(GetLastError());

done:
    HeapFree(GetProcessHeap(), 0, name);
    HeapFree(GetProcessHeap(), 0, token);
    HeapFree(GetProcessHeap(), 0, version);
    HeapFree(GetProcessHeap(), 0, asmpath);
    assembly_release(assembly);
    return hr;
}

void FileAccessWindows::close() {

	if (!f)
		return;

	fclose(f);
	f = NULL;

	if (save_path != "") {

		bool rename_error = true;
		int attempts = 4;
		while (rename_error && attempts) {
			// This workaround of trying multiple times is added to deal with paranoid Windows
			// antiviruses that love reading just written files even if they are not executable, thus
			// locking the file and preventing renaming from happening.

#ifdef UWP_ENABLED
			// UWP has no PathFileExists, so we check attributes instead
			DWORD fileAttr;

			fileAttr = GetFileAttributesW(save_path.c_str());
			if (INVALID_FILE_ATTRIBUTES == fileAttr) {
#else
			if (!PathFileExistsW(save_path.c_str())) {
#endif
				//creating new file
				rename_error = _wrename((save_path + ".tmp").c_str(), save_path.c_str()) != 0;
			} else {
				//atomic replace for existing file
				rename_error = !ReplaceFileW(save_path.c_str(), (save_path + ".tmp").c_str(), NULL, 2 | 4, NULL, NULL);
			}
			if (rename_error) {
				attempts--;
				OS::get_singleton()->delay_usec(100000); // wait 100msec and try again
			}
		}

		if (rename_error) {
			if (close_fail_notify) {
				close_fail_notify(save_path);
			}

			ERR_EXPLAIN("Safe save failed. This may be a permissions problem, but also may happen because you are running a paranoid antivirus. If this is the case, please switch to Windows Defender or disable the 'safe save' option in editor settings. This makes it work, but increases the risk of file corruption in a crash.");
		}

		save_path = "";

		ERR_FAIL_COND(rename_error);
	}
}

String FileAccessWindows::get_path() const {

	return path_src;
}

String FileAccessWindows::get_path_absolute() const {

	return path;
}

bool FileAccessWindows::is_open() const {

	return (f != NULL);
}
void FileAccessWindows::seek(size_t p_position) {

	ERR_FAIL_COND(!f);
	last_error = OK;
	if (fseek(f, p_position, SEEK_SET))
		check_errors();
}

HRESULT FileMoniker_CreateFromDisplayName(LPBC pbc, LPCOLESTR szDisplayName,
                                          LPDWORD pchEaten, IMoniker **ppmk)
{
    LPCWSTR end;
    static const WCHAR wszSeparators[] = {':','\\','/','!',0};

    for (end = szDisplayName + strlenW(szDisplayName);
         end && (end != szDisplayName);
         end = memrpbrkW(szDisplayName, end - szDisplayName, wszSeparators))
    {
        HRESULT hr;
        IRunningObjectTable *rot;
        IMoniker *file_moniker;
        LPWSTR file_display_name;
        LPWSTR full_path_name;
        DWORD full_path_name_len;
        int len = end - szDisplayName;

        file_display_name = HeapAlloc(GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR));
        if (!file_display_name) return E_OUTOFMEMORY;
        memcpy(file_display_name, szDisplayName, len * sizeof(WCHAR));
        file_display_name[len] = '\0';

        hr = CreateFileMoniker(file_display_name, &file_moniker);
        if (FAILED(hr))
        {
            HeapFree(GetProcessHeap(), 0, file_display_name);
            return hr;
        }

        hr = IBindCtx_GetRunningObjectTable(pbc, &rot);
        if (FAILED(hr))
        {
            HeapFree(GetProcessHeap(), 0, file_display_name);
            IMoniker_Release(file_moniker);
            return hr;
        }

        hr = IRunningObjectTable_IsRunning(rot, file_moniker);
        IRunningObjectTable_Release(rot);
        if (FAILED(hr))
        {
            HeapFree(GetProcessHeap(), 0, file_display_name);
            IMoniker_Release(file_moniker);
            return hr;
        }
        if (hr == S_OK)
        {
            TRACE("found running file moniker for %s\n", debugstr_w(file_display_name));
            *pchEaten = len;
            *ppmk = file_moniker;
            HeapFree(GetProcessHeap(), 0, file_display_name);
            return S_OK;
        }

        full_path_name_len = GetFullPathNameW(file_display_name, 0, NULL, NULL);
        if (!full_path_name_len)
        {
            HeapFree(GetProcessHeap(), 0, file_display_name);
            IMoniker_Release(file_moniker);
            return MK_E_SYNTAX;
        }
        full_path_name = HeapAlloc(GetProcessHeap(), 0, full_path_name_len * sizeof(WCHAR));
        if (!full_path_name)
        {
            HeapFree(GetProcessHeap(), 0, file_display_name);
            IMoniker_Release(file_moniker);
            return E_OUTOFMEMORY;
        }
        GetFullPathNameW(file_display_name, full_path_name_len, full_path_name, NULL);

        if (GetFileAttributesW(full_path_name) == INVALID_FILE_ATTRIBUTES)
            TRACE("couldn't open file %s\n", debugstr_w(full_path_name));
        else
        {
            TRACE("got file moniker for %s\n", debugstr_w(szDisplayName));
            *pchEaten = len;
            *ppmk = file_moniker;
            HeapFree(GetProcessHeap(), 0, file_display_name);
            HeapFree(GetProcessHeap(), 0, full_path_name);
            return S_OK;
        }
        HeapFree(GetProcessHeap(), 0, file_display_name);
        HeapFree(GetProcessHeap(), 0, full_path_name);
        IMoniker_Release(file_moniker);
    }

    return MK_E_CANTOPENFILE;
}

/*
 * Arguments: path (string), [more_info (boolean)]
 * Returns: [is_directory (boolean), is_file (boolean),
 *	is_read (boolean), is_write (boolean), is_execute (boolean),
 *	[is_link (boolean), size (number),
 *	access_time (number), modify_time (number), create_time (number)]]
 */
static int
sys_stat (lua_State *L)
{
  const char *path = luaL_checkstring(L, 1);
  const int more_info = lua_toboolean(L, 2);
#ifndef _WIN32
  struct stat st;
#else
  struct _stat st;
#endif
  int res;

  sys_vm_leave(L);
#ifndef _WIN32
  res = stat(path, &st);
#else
  {
    void *os_path = utf8_to_filename(path);
    if (!os_path)
      return sys_seterror(L, ERROR_NOT_ENOUGH_MEMORY);

    res = is_WinNT ? _wstat(os_path, &st) : _stat(os_path, &st);

    free(os_path);
  }
#endif
  sys_vm_enter(L);

  if (!res) {
    /* is directory? */
    lua_pushboolean(L,
#ifndef _WIN32
     S_ISDIR(st.st_mode)
#else
     st.st_mode & _S_IFDIR
#endif
    );
    /* is regular file? */
    lua_pushboolean(L,
#ifndef _WIN32
     S_ISREG(st.st_mode)
#else
     st.st_mode & _S_IFREG
#endif
    );
    /* can anyone read from file? */
    lua_pushboolean(L,
#ifndef _WIN32
     st.st_mode & (S_IRUSR | S_IRGRP | S_IROTH)
#else
     st.st_mode & _S_IREAD
#endif
    );
    /* can anyone write to file? */
    lua_pushboolean(L,
#ifndef _WIN32
     st.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH)
#else
     st.st_mode & _S_IWRITE
#endif
    );
    /* can anyone execute the file? */
    lua_pushboolean(L,
#ifndef _WIN32
     st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)
#else
     st.st_mode & _S_IEXEC
#endif
    );
    if (more_info) {
      /* is link? */
#ifndef _WIN32
      lua_pushboolean(L, S_ISLNK(st.st_mode));
#else
      DWORD attr;
      {
        void *os_path = utf8_to_filename(path);
        if (!os_path)
          return sys_seterror(L, ERROR_NOT_ENOUGH_MEMORY);

        attr = is_WinNT
         ? GetFileAttributesW(os_path)
         : GetFileAttributesA(os_path);

        free(os_path);
      }
      lua_pushboolean(L,
       attr > 0 && (attr & FILE_ATTRIBUTE_REPARSE_POINT));
#endif
      lua_pushnumber(L, (lua_Number) st.st_size);  /* size in bytes */
      lua_pushnumber(L, (lua_Number) st.st_atime);  /* access time */
      lua_pushnumber(L, (lua_Number) st.st_mtime);  /* modification time */
      lua_pushnumber(L, (lua_Number) st.st_ctime);  /* creation time */
//.........这里部分代码省略.........

/*
 * opendir
 *
 * Returns a pointer to a DIR structure appropriately filled in to begin
 * searching a directory.
 */
_TDIR *
_topendir (const _TCHAR *szPath)
{
  _TDIR *nd;
  unsigned int rc;
  _TCHAR szFullPath[MAX_PATH];

  errno = 0;

  if (!szPath)
    {
      errno = EFAULT;
      return (_TDIR *) 0;
    }

  if (szPath[0] == _T('\0'))
    {
      errno = ENOTDIR;
      return (_TDIR *) 0;
    }

  /* Attempt to determine if the given path really is a directory. */
  rc = GetFileAttributesW (szPath);
  if (rc == INVALID_FILE_ATTRIBUTES)
    {
      /* call GetLastError for more error info */
      errno = ENOENT;
      return (_TDIR *) 0;
    }
  if (!(rc & FILE_ATTRIBUTE_DIRECTORY))
    {
      /* Error, entry exists but not a directory. */
      errno = ENOTDIR;
      return (_TDIR *) 0;
    }

  /* Make an absolute pathname.  */
  _tfullpath (szFullPath, szPath, MAX_PATH);

  /* Allocate enough space to store DIR structure and the complete
   * directory path given. */
  nd = (_TDIR *) malloc (sizeof (_TDIR) + (_tcslen (szFullPath)
					   + _tcslen (SLASH)
					   + _tcslen (SUFFIX) + 1)
					  * sizeof (_TCHAR));

  if (!nd)
    {
      /* Error, out of memory. */
      errno = ENOMEM;
      return (_TDIR *) 0;
    }

  /* Create the search expression. */
  _tcscpy (nd->dd_name, szFullPath);

  /* Add on a slash if the path does not end with one. */
  if (nd->dd_name[0] != _T('\0') &&
      nd->dd_name[_tcslen (nd->dd_name) - 1] != _T('/') &&
      nd->dd_name[_tcslen (nd->dd_name) - 1] != _T('\\'))
    {
      _tcscat (nd->dd_name, SLASH);
    }

  /* Add on the search pattern */
  _tcscat (nd->dd_name, SUFFIX);

  /* Initialize handle to -1 so that a premature closedir doesn't try
   * to call _findclose on it. */
  nd->dd_handle = -1;

  /* Initialize the status. */
  nd->dd_stat = 0;

  /* Initialize the dirent structure. ino and reclen are invalid under
   * Win32, and name simply points at the appropriate part of the
   * findfirst_t structure. */
  nd->dd_dir.d_ino = 0;
  nd->dd_dir.d_reclen = 0;
  nd->dd_dir.d_namlen = 0;
  memset (nd->dd_dir.d_name, 0, 260 /*FILENAME_MAX*/);

  return nd;
}

static void setup_environment(LPWSTR top_level_path, int full_path)
{
	WCHAR msystem[64];
	LPWSTR path2 = NULL;
	int len;

	/* Set MSYSTEM */
	swprintf(msystem, sizeof(msystem),
		L"MINGW%d", (int) sizeof(void *) * 8);
	SetEnvironmentVariable(L"MSYSTEM", msystem);

	/* if not set, set PLINK_PROTOCOL to ssh */
	if (!GetEnvironmentVariable(L"PLINK_PROTOCOL", NULL, 0))
		SetEnvironmentVariable(L"PLINK_PROTOCOL", L"ssh");

	/*
	 * set HOME to %HOMEDRIVE%%HOMEPATH% or %USERPROFILE%
	 * With roaming profiles: HOMEPATH is the roaming location and
	 * USERPROFILE is the local location
	 */
	if (!GetEnvironmentVariable(L"HOME", NULL, 0)) {
		LPWSTR e = NULL;
		len = GetEnvironmentVariable(L"HOMEPATH", NULL, 0);
		if (len) {
			DWORD attr, drvlen = GetEnvironmentVariable(L"HOMEDRIVE", NULL, 0);
			e = (LPWSTR)malloc(sizeof(WCHAR) * (drvlen + len));
			drvlen = GetEnvironmentVariable(L"HOMEDRIVE", e, drvlen);
			GetEnvironmentVariable(L"HOMEPATH", e + drvlen, len);
			/* check if the path exists */
			attr = GetFileAttributesW(e);
			if (attr != INVALID_FILE_ATTRIBUTES
					&& (attr & FILE_ATTRIBUTE_DIRECTORY))
				SetEnvironmentVariable(L"HOME", e);
			else
				len = 0; /* use USERPROFILE */
			free(e);
		}

		if (len == 0) {
			len = GetEnvironmentVariable(L"USERPROFILE", NULL, 0);
			if (len != 0) {
				e = (LPWSTR)malloc(len * sizeof(WCHAR));
				GetEnvironmentVariable(L"USERPROFILE", e, len);
				SetEnvironmentVariable(L"HOME", e);
				free(e);
			}
		}
	}

	/* extend the PATH */
	len = GetEnvironmentVariable(L"PATH", NULL, 0);
	len = sizeof(WCHAR) * (len + 3 * MAX_PATH);
	path2 = (LPWSTR)malloc(len);
	wcscpy(path2, top_level_path);
	if (!full_path)
		PathAppend(path2, L"cmd;");
	else {
		PathAppend(path2, msystem_bin);
		if (_waccess(path2, 0) != -1) {
			/* We are in an MSys2-based setup */
			int len2 = GetEnvironmentVariable(L"HOME", NULL, 0);

			wcscat(path2, L";");
			wcscat(path2, top_level_path);
			PathAppend(path2, L"usr\\bin;");
			if (len2 + 6 < MAX_PATH) {
				GetEnvironmentVariable(L"HOME",
						path2 + wcslen(path2), len2);
				PathAppend(path2, L"bin;");
			}
		}
		else {
			/* Fall back to MSys1 paths */
			wcscpy(path2, top_level_path);
			PathAppend(path2, L"bin;");
			wcscat(path2, top_level_path);
			PathAppend(path2, L"mingw\\bin;");
		}
	}
	GetEnvironmentVariable(L"PATH", path2 + wcslen(path2),
				(len / sizeof(WCHAR)) - wcslen(path2));
	SetEnvironmentVariable(L"PATH", path2);
	free(path2);

}

bool path_exists(const std::string &path)
{
	DWORD dwAttrib = GetFileAttributesW(utf8_to_utf16(path).c_str());
	return dwAttrib != INVALID_FILE_ATTRIBUTES;
}

posix_errno_t efile_read_info(const efile_path_t *path, int follow_links, efile_fileinfo_t *result) {
    BY_HANDLE_FILE_INFORMATION native_file_info;
    DWORD attributes;
    int is_link;

    sys_memset(&native_file_info, 0, sizeof(native_file_info));
    is_link = 0;

    attributes = GetFileAttributesW((WCHAR*)path->data);

    if(attributes == INVALID_FILE_ATTRIBUTES) {
        DWORD last_error = GetLastError();

        /* Querying a network share root fails with ERROR_BAD_NETPATH, so we'll
         * fake it as a directory just like local roots. */
        if(!is_path_root(path) || last_error != ERROR_BAD_NETPATH) {
            return windows_to_posix_errno(last_error);
        }

        attributes = FILE_ATTRIBUTE_DIRECTORY;
    } else if(is_path_root(path)) {
        /* Local (or mounted) roots can be queried with GetFileAttributesW but
         * lack support for GetFileInformationByHandle, so we'll skip that
         * part. */
    } else {
        HANDLE handle;

        if(attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
            is_link = is_name_surrogate(path);
        }

        if(follow_links && is_link) {
            posix_errno_t posix_errno;
            efile_path_t resolved_path;

            posix_errno = internal_read_link(path, &resolved_path);

            if(posix_errno != 0) {
                return posix_errno;
            }

            return efile_read_info(&resolved_path, 0, result);
        }

        handle = CreateFileW((const WCHAR*)path->data, GENERIC_READ,
            FILE_SHARE_FLAGS, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS,
            NULL);

        /* The old driver never cared whether this succeeded. */
        if(handle != INVALID_HANDLE_VALUE) {
            GetFileInformationByHandle(handle, &native_file_info);
            CloseHandle(handle);
        }

        FILETIME_TO_EPOCH(result->m_time, native_file_info.ftLastWriteTime);
        FILETIME_TO_EPOCH(result->a_time, native_file_info.ftLastAccessTime);
        FILETIME_TO_EPOCH(result->c_time, native_file_info.ftCreationTime);

        if(result->m_time == -EPOCH_DIFFERENCE) {
            /* Default to 1970 just like the old driver. */
            result->m_time = 0;
        }

        if(result->a_time == -EPOCH_DIFFERENCE) {
            result->a_time = result->m_time;
        }

        if(result->c_time == -EPOCH_DIFFERENCE) {
            result->c_time = result->m_time;
        }
    }

    if(is_link) {
        result->type = EFILE_FILETYPE_SYMLINK;
        /* This should be _S_IFLNK, but the old driver always set
         * non-directories to _S_IFREG. */
        result->mode |= _S_IFREG;
    } else if(attributes & FILE_ATTRIBUTE_DIRECTORY) {
        result->type = EFILE_FILETYPE_DIRECTORY;
        result->mode |= _S_IFDIR | _S_IEXEC;
    } else {
        if(is_executable_file(path)) {
            result->mode |= _S_IEXEC;
        }

        result->type = EFILE_FILETYPE_REGULAR;
        result->mode |= _S_IFREG;
    }

    if(!(attributes & FILE_ATTRIBUTE_READONLY)) {
        result->access = EFILE_ACCESS_READ | EFILE_ACCESS_WRITE;
        result->mode |= _S_IREAD | _S_IWRITE;
    } else {
        result->access = EFILE_ACCESS_READ;
        result->mode |= _S_IREAD;
    }

    /* Propagate user mode-bits to group/other fields */
    result->mode |= (result->mode & 0700) >> 3;
    result->mode |= (result->mode & 0700) >> 6;
//.........这里部分代码省略.........

/***********************************************************************
 *      SetupCopyOEMInfW  ([email protected])
 */
BOOL WINAPI SetupCopyOEMInfW( PCWSTR source, PCWSTR location,
                              DWORD media_type, DWORD style, PWSTR dest,
                              DWORD buffer_size, PDWORD required_size, PWSTR *component )
{
    BOOL ret = FALSE;
    WCHAR target[MAX_PATH], catalog_file[MAX_PATH], *p;
    static const WCHAR inf[] = { '\\','i','n','f','\\',0 };
    static const WCHAR wszVersion[] = { 'V','e','r','s','i','o','n',0 };
    static const WCHAR wszCatalogFile[] = { 'C','a','t','a','l','o','g','F','i','l','e',0 };
    DWORD size;
    HINF hinf;

    TRACE("%s, %s, %d, %d, %p, %d, %p, %p\n", debugstr_w(source), debugstr_w(location),
          media_type, style, dest, buffer_size, required_size, component);

    if (!source)
    {
        SetLastError(ERROR_INVALID_PARAMETER);
        return FALSE;
    }

    /* check for a relative path */
    if (!(*source == '\\' || (*source && source[1] == ':')))
    {
        SetLastError(ERROR_FILE_NOT_FOUND);
        return FALSE;
    }

    if (!GetWindowsDirectoryW( target, sizeof(target)/sizeof(WCHAR) )) return FALSE;

    strcatW( target, inf );
    if ((p = strrchrW( source, '\\' )))
        strcatW( target, p + 1 );

    /* does the file exist already? */
    if ((GetFileAttributesW( target ) != INVALID_FILE_ATTRIBUTES) &&
        !(style & SP_COPY_NOOVERWRITE))
    {
        static const WCHAR oem[] = { 'o','e','m',0 };
        unsigned int i;
        LARGE_INTEGER source_file_size;
        HANDLE source_file;

        source_file = CreateFileW( source, FILE_READ_DATA | FILE_READ_ATTRIBUTES,
                                   FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
                                   NULL, OPEN_EXISTING, 0, NULL );
        if (source_file == INVALID_HANDLE_VALUE)
            return FALSE;

        if (!GetFileSizeEx( source_file, &source_file_size ))
        {
            CloseHandle( source_file );
            return FALSE;
        }

        p = strrchrW( target, '\\' ) + 1;
        memcpy( p, oem, sizeof(oem) );
        p += sizeof(oem)/sizeof(oem[0]) - 1;

        /* generate OEMnnn.inf ending */
        for (i = 0; i < OEM_INDEX_LIMIT; i++)
        {
            static const WCHAR format[] = { '%','u','.','i','n','f',0 };
            HANDLE dest_file;
            LARGE_INTEGER dest_file_size;

            wsprintfW( p, format, i );
            dest_file = CreateFileW( target, FILE_READ_DATA | FILE_READ_ATTRIBUTES,
                                     FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
                                     NULL, OPEN_EXISTING, 0, NULL );
            /* if we found a file name that doesn't exist then we're done */
            if (dest_file == INVALID_HANDLE_VALUE)
                break;
            /* now check if the same inf file has already been copied to the inf
             * directory. if so, use that file and don't create a new one */
            if (!GetFileSizeEx( dest_file, &dest_file_size ) ||
                (dest_file_size.QuadPart != source_file_size.QuadPart) ||
                compare_files( source_file, dest_file ))
            {
                CloseHandle( dest_file );
                continue;
            }
            CloseHandle( dest_file );
            break;
        }

        CloseHandle( source_file );
        if (i == OEM_INDEX_LIMIT)
        {
            SetLastError( ERROR_FILENAME_EXCED_RANGE );
            return FALSE;
        }
    }

    hinf = SetupOpenInfFileW( source, NULL, INF_STYLE_WIN4, NULL );
    if (hinf == INVALID_HANDLE_VALUE) return FALSE;

//.........这里部分代码省略.........