Function JoinGcsPath

tensorflow/core/platform/cloud/gcs_file_system.cc:194–196

io::JoinPath() doesn't work in cases when we want an empty subpath to result in an appended slash in order for directory markers to be processed correctly: "gs://a/b" + "" should give "gs://a/b/".

// to result in an appended slash in order for directory markers
// to be processed correctly: "gs://a/b" + "" should give "gs://a/b/".
string JoinGcsPath(const string& path, const string& subpath) {
  return strings::StrCat(MaybeAppendSlash(path), subpath);
}

/// \brief Returns the given paths appending all their subfolders.
///