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# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
# Copyright 2014-2019 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
#
# This file is part of qutebrowser.
#
# qutebrowser is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# qutebrowser is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
"""Classes related to auto-updating and getting the latest version."""
import json
from PyQt5.QtCore import pyqtSignal, pyqtSlot, QObject, QUrl
from qutebrowser.misc import httpclient
class PyPIVersionClient(QObject):
"""A client for the PyPI API using HTTPClient.
It gets the latest version of qutebrowser from PyPI.
Attributes:
_client: The HTTPClient used.
Class attributes:
API_URL: The base API URL.
Signals:
success: Emitted when getting the version info succeeded.
arg: The newest version.
error: Emitted when getting the version info failed.
arg: The error message, as string.
"""
API_URL = 'https://pypi.org/pypi/{}/json'
success = pyqtSignal(str)
error = pyqtSignal(str)
def __init__(self, parent=None, client=None):
super().__init__(parent)
if client is None:
self._client = httpclient.HTTPClient(self)
else:
self._client = client
self._client.error.connect(self.error) # type: ignore
self._client.success.connect(self.on_client_success)
def get_version(self, package='qutebrowser'):
"""Get the newest version of a given package.
Emits success/error when done.
Args:
package: The name of the package to check.
"""
url = QUrl(self.API_URL.format(package))
self._client.get(url)
@pyqtSlot(str)
def on_client_success(self, data):
"""Process the data and finish when the client finished.
Args:
data: A string with the received data.
"""
try:
json_data = json.loads(data)
except ValueError as e:
self.error.emit("Invalid JSON received in reply: {}!".format(e))
return
try:
self.success.emit(json_data['info']['version'])
except KeyError as e:
self.error.emit("Malformed data received in reply "
"({!r} not found)!".format(e))
return
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