std::wstring get_shell_path()

in node_modules_native/node_modules_forked/node-pty/src/win/path_util.cc [31:71]

• 33 lines of code
• 7 McCabe index (conditional complexity)

std::wstring get_shell_path(std::wstring filename) {
  std::wstring shellpath;

  if (file_exists(filename)) {
    return shellpath;
  }

  wchar_t buffer_[MAX_ENV];
  int read = ::GetEnvironmentVariableW(L"Path", buffer_, MAX_ENV);
  if (!read) {
    return shellpath;
  }

  std::wstring delimiter = L";";
  size_t pos = 0;
  std::vector<std::wstring> paths;
  std::wstring buffer(buffer_);
  while ((pos = buffer.find(delimiter)) != std::wstring::npos) {
    paths.push_back(buffer.substr(0, pos));
    buffer.erase(0, pos + delimiter.length());
  }

  const wchar_t *filename_ = filename.c_str();

  for (int i = 0; i < paths.size(); ++i) {
    std::wstring path = paths[i];
    wchar_t searchPath[MAX_PATH];
    ::PathCombineW(searchPath, const_cast<wchar_t*>(path.c_str()), filename_);

    if (searchPath == NULL) {
      continue;
    }

    if (file_exists(searchPath)) {
      shellpath = searchPath;
      break;
    }
  }

  return shellpath;
}