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from __future__ import (print_function, division, unicode_literals,
absolute_import)
import os
import shutil
import gzip
from sylib.export import datasource as importdatasource
[docs]class DataArchiveGz(importdatasource.DatasourceArchiveBase):
"""Compressor for GZIP files"""
EXPORTER_NAME = "GZIP Compressor"
FILENAME_EXTENSION = 'gz'
def __init__(self, custom_parameter_root):
super(DataArchiveGz, self).__init__(
custom_parameter_root,
importdatasource.DatasourceArchiveBase.COMPRESSOR)
@staticmethod
def hide_filename():
return True
def compress_data(self, in_datasources, directory, progress=None):
files = []
for ds in in_datasources:
in_file = ds.decode_path()
gz_file = '{}.{}'.format(
os.path.join(directory, os.path.basename(in_file)),
self.FILENAME_EXTENSION)
with open(in_file, 'rb') as i_f, gzip.open(gz_file, 'wb') as o_f:
shutil.copyfileobj(i_f, o_f)
files.append(gz_file)
return files
def create_filenames(self, node_context_input):
return ['{}.{}'.format(
os.path.basename(path.decode_path()), self.FILENAME_EXTENSION)
for path in node_context_input['port0']]