Ad5001
ffe09a2b3d
Confined packages (snapcraft & flatpak) won't show error messages related to update checks.
85 lines
3.4 KiB
Python
85 lines
3.4 KiB
Python
"""
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* LogarithmPlotter - Create graphs with logarithm scales.
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* Copyright (C) 2022 Ad5001
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*
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* This program 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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* This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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from PySide2.QtCore import Qt, QRunnable, QThreadPool, QThread, QObject, Signal
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from urllib.request import urlopen
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from urllib.error import HTTPError, URLError
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from sys import argv
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class UpdateInformation(QObject):
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got_update_info = Signal(bool, str, bool)
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class UpdateCheckerRunnable(QRunnable):
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def __init__(self, current_version, callback):
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QRunnable.__init__(self)
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self.current_version = current_version
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self.callback = callback
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def run(self):
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msg_text = "Unknown update error."
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show_alert = True
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update_available = False
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try:
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# Fetching version
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r = urlopen("https://api.ad5001.eu/update/v1/LogarithmPlotter")
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lines = r.readlines()
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r.close()
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# Parsing version
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version = "".join(map(chr, lines[0])).strip() # Converts byte to string.
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version_tuple = version.split(".")
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is_version_newer = False
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if "dev" in self.current_version:
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# We're on a dev version
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current_version_tuple = self.current_version.split(".")[:-1] # Removing the dev0+git bit.
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is_version_newer = version_tuple >= current_version_tuple # If equals, that means we got out of testing phase.
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else:
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current_version_tuple = self.current_version.split(".")
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is_version_newer = version_tuple > current_version_tuple
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if is_version_newer:
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msg_text = "An update for LogarithPlotter (v" + version + ") is available."
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update_available = True
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else:
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show_alert = False
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msg_text = "No update available."
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except HTTPError as e:
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msg_text = "Could not fetch update information: Server error " + str(e.code) + "."
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except URLError as e:
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msg_text = "Could not fetch update information: Could not connect to the update server. " + str(e.reason) + "."
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print(msg_text)
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self.callback.got_update_info.emit(show_alert, msg_text,update_available)
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def check_for_updates(current_version, window):
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"""
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Checks for updates in the background, and sends an alert with information.
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"""
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if "--no-check-for-updates" in argv:
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return #
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def cb(show_alert, msg_text, update_available):
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pass
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if show_alert:
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window.showAlert(msg_text)
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if update_available:
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window.showUpdateMenu()
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update_info = UpdateInformation()
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update_info.got_update_info.connect(cb)
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runnable = UpdateCheckerRunnable(current_version, update_info)
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QThreadPool.globalInstance().start(runnable)
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