Source code for stonesoup.writer.yaml

# -*- coding: utf-8 -*-
from pathlib import Path

from ..base import Property
from ..serialise import YAML
from ..reader import DetectionReader, GroundTruthReader, SensorDataReader
from ..tracker import Tracker
from .base import Writer

[docs]class YAMLWriter(Writer): """YAML Writer""" path: Path = Property(doc="File to save data to. Str will be converted to Path") groundtruth_source: GroundTruthReader = Property(default=None) sensor_data_source: SensorDataReader = Property(default=None) detections_source: DetectionReader = Property(default=None) tracks_source: Tracker = Property(default=None) def __init__(self, path, *args, **kwargs): if not isinstance(path, Path): path = Path(path) # Ensure Path super().__init__(path, *args, **kwargs) if not any((self.groundtruth_source, self.sensor_data_source, self.detections_source, self.tracks_source)): raise ValueError("At least one source required") self._file ='w') yaml = YAML() # Required as will be writing multiple documents to file yaml._yaml.explicit_start = True yaml._yaml.explicit_end = True self._yaml = yaml def write(self): if self.tracks_source: gen = self.tracks_source elif self.detections_source: gen = self.detections_source elif self.sensor_data_source: gen = self.sensor_data_source elif self.groundtruth_source: gen = self.groundtruth_source else: # pragma: no cover raise RuntimeError("At least one source required") for time, _ in gen: data = {'time': time} if self.tracks_source: data['tracks'] = self.tracks_source.tracks if self.detections_source: data['detections'] = self.detections_source.detections if self.sensor_data_source: data['sensor_data'] = self.sensor_data_source.sensor_data if self.groundtruth_source: data['groundtruth_paths'] = \ self.groundtruth_source.groundtruth_paths self._yaml.dump(data, self._file) def __enter__(self): return self def __exit__(self, *args): if getattr(self, '_file', None): self._file.close() def __del__(self): self.__exit__()