Source code for plugin_tar_archiver

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from __future__ import (print_function, division, unicode_literals,
                        absolute_import)
import os
import tarfile
from sylib.export import datasource as importdatasource


class DataArchiveTar(importdatasource.DatasourceArchiveBase):
    """Archiver for TAR files. Takes all datasources in input and puts
    them in one (uncompressed) TAR file. Folder structure is discarded.
    """

    EXPORTER_NAME = "TAR Archiver"
    FILENAME_EXTENSION = 'tar'

    @staticmethod
    def hide_filename():
        return False

    def export_data(self, in_datasources, location, progress=None):
        if len(in_datasources):
            with tarfile.open(location, 'w') as f:
                for ds in in_datasources:
                    path = ds.decode_path()
                    f.add(path, os.path.basename(path))
        return [location]

    def create_filenames(self, input_list, filename, *args):
        return super(DataArchiveTar, self).create_filenames(
            input_list, filename, *args)

    def cardinality(self):
        return self.many_to_one