add plugin registry

raven/ravenlog.py

@@ -0,0 +1,80 @@
+import ctypes
+import logging
+import signal
+import sys
+from inspect import isclass
+from importlib import import_module
+from pathlib import Path
+from pkgutil import iter_modules
+
+from plugins import *
+
+from PyQt6 import QtCore
+from PyQt6.QtCore import QTimer
+from PyQt6.QtGui import QIcon
+from PyQt6.QtWidgets import QApplication
+
+import constants
+from raven.ravenwindow import RavenWindow
+from ravenui import RavenUI
+
+logging.basicConfig(level=logging.INFO)
+log = logging.getLogger("main")
+
+
+def stop_signal(signum, _stackframe):
+    """ Handle terminate signal """
+    try:
+        log.info("Terminate signal received. %s", signum)
+        QtCore.QCoreApplication.quit()
+    except Exception:
+        log.exception("Exception occurred while terminating")
+        sys.exit(1)
+    sys.exit(0)
+
+
+def init_signal_handler():
+    # workaround to make signals work in QT apps.
+    # They do not work out of the box, because the main thread
+    # is running in C++ code once app.exec() is executed
+    # Forcing an empty lambda to be executed periodically gives
+    # control back to python and allows python to react to signals
+    timer = QTimer()
+    timer.timeout.connect(lambda: None)
+    timer.start(100)
+    signal.signal(signal.SIGINT, stop_signal)
+    signal.signal(signal.SIGTERM, stop_signal)
+
+
+def init_translator(app: QApplication):
+    # translator = QTranslator()
+    # if translator.load(QLocale("de"), "messages_de.ts"):
+    #    app.installTranslator(translator)
+    pass
+
+
+def set_window_icon(app: QApplication):
+    app.setWindowIcon(QIcon("../" + constants.raven_icon))
+
+    # see https://stackoverflow.com/questions/1551605/how-to-set-applications-taskbar-icon-in-windows-7/1552105#1552105
+    if sys.platform == 'win32' or sys.platform == 'cygwin':
+        ctypes.windll.shell32.SetCurrentProcessExplicitAppUserModelID('opentext.ravenlog')
+
+
+if __name__ == "__main__":
+    filterplugin = PluginRegistry.load_plugin("FilterPlugin")
+    filterplugin()
+
+    logfileviewerplugin = PluginRegistry.load_plugin("LogFileViewerPlugin")
+    logfileviewerplugin()
+
+    app = QApplication(sys.argv)
+    set_window_icon(app)
+    init_translator(app)
+    init_signal_handler()
+
+    window = RavenWindow()
+    RavenUI.window = window
+    window.show()
+
+    app.exec()