90 lines
2.8 KiB
Python
90 lines
2.8 KiB
Python
# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
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# Copyright 2014-2017 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
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#
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# This file is part of qutebrowser.
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#
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# qutebrowser is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# qutebrowser is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
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"""Classes related to auto-updating and getting the latest version."""
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import json
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from PyQt5.QtCore import pyqtSignal, pyqtSlot, QObject, QUrl
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from qutebrowser.misc import httpclient
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class PyPIVersionClient(QObject):
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"""A client for the PyPI API using HTTPClient.
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It gets the latest version of qutebrowser from PyPI.
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Attributes:
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_client: The HTTPClient used.
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Class attributes:
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API_URL: The base API URL.
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Signals:
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success: Emitted when getting the version info succeeded.
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arg: The newest version.
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error: Emitted when getting the version info failed.
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arg: The error message, as string.
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"""
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API_URL = 'https://pypi.python.org/pypi/{}/json'
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success = pyqtSignal(str)
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error = pyqtSignal(str)
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def __init__(self, parent=None, client=None):
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super().__init__(parent)
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if client is None:
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self._client = httpclient.HTTPClient(self)
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else:
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self._client = client
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self._client.error.connect(self.error)
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self._client.success.connect(self.on_client_success)
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def get_version(self, package='qutebrowser'):
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"""Get the newest version of a given package.
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Emits success/error when done.
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Args:
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package: The name of the package to check.
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"""
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url = QUrl(self.API_URL.format(package))
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self._client.get(url)
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@pyqtSlot(str)
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def on_client_success(self, data):
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"""Process the data and finish when the client finished.
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Args:
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data: A string with the received data.
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"""
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try:
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json_data = json.loads(data)
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except ValueError as e:
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self.error.emit("Invalid JSON received in reply: {}!".format(e))
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return
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try:
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self.success.emit(json_data['info']['version'])
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except KeyError as e:
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self.error.emit("Malformed data received in reply "
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"({!r} not found)!".format(e))
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return
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