Add log file to catch unexpected crash

Author: chroming

src/gui/main.py

@@ -6,6 +6,7 @@
 """
 
 import sys
+import logging
 import webbrowser
 
 from PyQt5 import QtWidgets, QtCore, QtGui
@@ -20,6 +21,18 @@
 from src.convert import convert_dir_text
 from src.pdf.bookmark import add_bookmark
 
+logging.basicConfig(level=logging.DEBUG,
+                    format='%(asctime)s - %(levelname)s - %(message)s',
+                    filename='pdfdir.log',
+                    filemode='a')
+
+
+def log_uncaught_exceptions(ex_cls, ex, tb):
+    text = '{}: {}:\n'.format(ex_cls.__name__, ex)
+    logging.critical(text, exc_info=(ex_cls, ex, tb))
+
+
+sys.excepthook = log_uncaught_exceptions
 
 QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling, True)