util/ExceptionHandler.py
author Edouard Tisserant <edouard.tisserant@gmail.com>
Mon, 02 Mar 2020 16:30:29 +0100
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This is meant to optimize performances with large drawings leading to long restyle or reflow.
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of Beremiz, a Integrated Development Environment for
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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
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#
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# Copyright (C) 2007:      Edouard TISSERANT and Laurent BESSARD
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# Copyright (C) 2016-2017: Andrey Skvortsov <andrej.skvortzov@gmail.com>
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#
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# See COPYING file for copyrights details.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (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, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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from __future__ import absolute_import
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import os
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import sys
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import time
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import tempfile
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import platform
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import traceback
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import threading
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import wx
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Max_Traceback_List_Size = 20
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def Display_Exception_Dialog(e_type, e_value, e_tb, bug_report_path, exit):
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    trcbck_lst = []
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    for i, line in enumerate(traceback.extract_tb(e_tb)):
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        trcbck = " " + str(i+1) + ". "
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        if line[0].find(os.getcwd()) == -1:
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            trcbck += "file : " + str(line[0]) + ",   "
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        else:
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            trcbck += "file : " + str(line[0][len(os.getcwd()):]) + ",   "
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        trcbck += "line : " + str(line[1]) + ",   " + "function : " + str(line[2])
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        trcbck_lst.append(trcbck)
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    # Allow clicking....
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    cap = wx.Window_GetCapture()
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    if cap:
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        cap.ReleaseMouse()
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    dlg = wx.SingleChoiceDialog(
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        None,
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        _("""
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An unhandled exception (bug) occured. Bug report saved at :
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(%s)
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Please be kind enough to send this file to:
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beremiz-devel@lists.sourceforge.net
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You should now restart program.
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Traceback:
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""") % bug_report_path +
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        repr(e_type) + " : " + repr(e_value),
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        _("Error"),
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        trcbck_lst)
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    try:
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        res = (dlg.ShowModal() == wx.ID_OK)
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    finally:
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        dlg.Destroy()
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    if exit:
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        sys.exit()  # wx.Exit()
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    return res
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def get_last_traceback(tb):
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    while tb.tb_next:
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        tb = tb.tb_next
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    return tb
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def format_namespace(d, indent='    '):
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    return '\n'.join(['%s%s: %s' % (indent, k, repr(v)[:10000]) for k, v in d.iteritems()])
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ignored_exceptions = []  # a problem with a line in a module is only reported once per session
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def AddExceptHook(app_version='[No version]'):
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    def save_bug_report(e_type, e_value, e_traceback, bug_report_path, date):
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        info = {
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            'app-title': wx.GetApp().GetAppName(),
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            'app-version': app_version,
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            'wx-version': wx.VERSION_STRING,
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            'wx-platform': wx.Platform,
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            'python-version': platform.python_version(),
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            'platform': platform.platform(),
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            'e-type': e_type,
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            'e-value': e_value,
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            'date': date,
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            'cwd': os.getcwd(),
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        }
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        if e_traceback:
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            info['traceback'] = ''.join(traceback.format_tb(e_traceback)) + '%s: %s' % (e_type, e_value)
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            last_tb = get_last_traceback(e_traceback)
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            exception_locals = last_tb.tb_frame.f_locals  # the locals at the level of the stack trace where the exception actually occurred
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            info['locals'] = format_namespace(exception_locals)
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            if 'self' in exception_locals:
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                try:
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                    info['self'] = format_namespace(exception_locals['self'].__dict__)
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                except Exception:
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                    pass
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        path = os.path.dirname(bug_report_path)
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        if not os.path.exists(path):
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            os.mkdir(path)
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        output = open(bug_report_path, 'w')
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        lst = info.keys()
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        lst.sort()
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        for a in lst:
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            output.write(a + ":\n" + str(info[a]) + "\n\n")
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        output.close()
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1953
5736d25bb393 PEP8 and PyLint conformance: whitespaces and stuff
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    def handle_exception(e_type, e_value, e_traceback, exit=False):
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        traceback.print_exception(e_type, e_value, e_traceback)  # this is very helpful when there's an exception in the rest of this func
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        last_tb = get_last_traceback(e_traceback)
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        ex = (last_tb.tb_frame.f_code.co_filename, last_tb.tb_frame.f_lineno)
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        if ex not in ignored_exceptions:
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            ignored_exceptions.append(ex)
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            date = time.ctime()
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            path = tempfile.gettempdir()+os.sep+wx.GetApp().GetAppName()
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            bug_report_path = path + os.sep + "bug_report_" + time.strftime("%Y_%m_%d__%H-%M-%S") + ".txt"
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            save_bug_report(e_type, e_value, e_traceback, bug_report_path, date)
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            wx.CallAfter(Display_Exception_Dialog, e_type, e_value, e_traceback, bug_report_path, exit)
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    # sys.excepthook = lambda *args: wx.CallAfter(handle_exception, *args)
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    sys.excepthook = handle_exception
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    init_old = threading.Thread.__init__
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    def init(self, *args, **kwargs):
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        init_old(self, *args, **kwargs)
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        run_old = self.run
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        def run_with_except_hook(*args, **kw):
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            try:
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                run_old(*args, **kw)
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            except (KeyboardInterrupt, SystemExit):
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                raise
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            except Exception:
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                sys.excepthook(*sys.exc_info())
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        self.run = run_with_except_hook
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    threading.Thread.__init__ = init
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    return handle_exception