utils.py
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# Licensed to the Software Freedom Conservancy (SFC) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The SFC licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
import json
import logging
import os
import tempfile
import zipfile
LOGGER = logging.getLogger(__name__)
def format_json(json_struct):
return json.dumps(json_struct, indent=4)
def dump_json(json_struct):
return json.dumps(json_struct)
def load_json(s):
return json.loads(s)
def unzip_to_temp_dir(zip_file_name):
"""Unzip zipfile to a temporary directory.
The directory of the unzipped files is returned if success,
otherwise None is returned. """
if not zip_file_name or not os.path.exists(zip_file_name):
return None
zf = zipfile.ZipFile(zip_file_name)
if zf.testzip() is not None:
return None
# Unzip the files into a temporary directory
LOGGER.info("Extracting zipped file: %s" % zip_file_name)
tempdir = tempfile.mkdtemp()
try:
# Create directories that don't exist
for zip_name in zf.namelist():
# We have no knowledge on the os where the zipped file was
# created, so we restrict to zip files with paths without
# charactor "\" and "/".
name = (zip_name.replace("\\", os.path.sep).
replace("/", os.path.sep))
dest = os.path.join(tempdir, name)
if (name.endswith(os.path.sep) and not os.path.exists(dest)):
os.mkdir(dest)
LOGGER.debug("Directory %s created." % dest)
# Copy files
for zip_name in zf.namelist():
# We have no knowledge on the os where the zipped file was
# created, so we restrict to zip files with paths without
# charactor "\" and "/".
name = (zip_name.replace("\\", os.path.sep).
replace("/", os.path.sep))
dest = os.path.join(tempdir, name)
if not (name.endswith(os.path.sep)):
LOGGER.debug("Copying file %s......" % dest)
outfile = open(dest, 'wb')
outfile.write(zf.read(zip_name))
outfile.close()
LOGGER.debug("File %s copied." % dest)
LOGGER.info("Unzipped file can be found at %s" % tempdir)
return tempdir
except IOError as err:
LOGGER.error("Error in extracting webdriver.xpi: %s" % err)
return None