Method CopyFile

cpp/src/arrow/filesystem/localfs.cc:634–658

}

Status LocalFileSystem::CopyFile(const std::string& src, const std::string& dest) {
  RETURN_NOT_OK(ValidatePath(src));
  RETURN_NOT_OK(ValidatePath(dest));
  ARROW_ASSIGN_OR_RAISE(auto sfn, PlatformFilename::FromString(src));
  ARROW_ASSIGN_OR_RAISE(auto dfn, PlatformFilename::FromString(dest));
  // XXX should we use fstat() to compare inodes?
  if (sfn.ToNative() == dfn.ToNative()) {
    return Status::OK();
  }

#ifdef _WIN32
  if (!CopyFileW(sfn.ToNative().c_str(), dfn.ToNative().c_str(),
                 FALSE /* bFailIfExists */)) {
    return IOErrorFromWinError(GetLastError(), "Failed copying '", sfn.ToString(),
                               "' to '", dfn.ToString(), "'");
  }
  return Status::OK();
#else
  ARROW_ASSIGN_OR_RAISE(auto is, OpenInputStream(src));
  ARROW_ASSIGN_OR_RAISE(auto os, OpenOutputStream(dest));
  RETURN_NOT_OK(internal::CopyStream(is, os, 1024 * 1024 /* chunk_size */, io_context()));
  RETURN_NOT_OK(os->Close());
  return is->Close();
#endif
}

namespace {