Function ParseGcsPath

tensorflow/core/platform/cloud/gcs_file_system.cc:158–178

\brief Splits a GCS path to a bucket and an object. For example, "gs://bucket-name/path/to/file.txt" gets split into "bucket-name" and "path/to/file.txt". If fname only contains the bucket and empty_object_ok = true, the returned object is empty.

/// If fname only contains the bucket and empty_object_ok = true, the returned
/// object is empty.
Status ParseGcsPath(StringPiece fname, bool empty_object_ok, string* bucket,
                    string* object) {
  StringPiece scheme, bucketp, objectp;
  io::ParseURI(fname, &scheme, &bucketp, &objectp);
  if (scheme != "gs") {
    return errors::InvalidArgument("GCS path doesn't start with 'gs://': ",
                                   fname);
  }
  *bucket = string(bucketp);
  if (bucket->empty() || *bucket == ".") {
    return errors::InvalidArgument("GCS path doesn't contain a bucket name: ",
                                   fname);
  }
  absl::ConsumePrefix(&objectp, "/");
  *object = string(objectp);
  if (!empty_object_ok && object->empty()) {
    return errors::InvalidArgument("GCS path doesn't contain an object name: ",
                                   fname);
  }
  return Status::OK();
}

/// Appends a trailing slash if the name doesn't already have one.
string MaybeAppendSlash(const string& name) {