TestFodder.__init__() - Code Metrics - Inspection of "Add support for disabling wrapping in relative mov..." - ssokolow/quicktile - Measure and Improve Code Quality continuously with Scrutinizer

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by Stephan

created 2017-08-22 04:51 UTC

TestFodder.init() A

↳ Parent: TestFodder

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"""Graphical exception handler for PyGTK applications

(c) 2003 Gustavo J A M Carneiro gjc at inescporto.pt
(c) 2004-2005 Filip Van Raemdonck
(c) 2009, 2011, 2017 Stephan Sokolow

http://www.daa.com.au/pipermail/pygtk/2003-August/005775.html
Message-ID: <[email protected]>
"The license is whatever you want."

Instructions: import gtkexcepthook; gtkexcepthook.enable()

Changes from Van Raemdonck version:
 - Switched from auto-enable to gtkexcepthook.enable() to silence PyFlakes
   false positives. (Borrowed naming convention from cgitb)
 - Split out traceback import to silence PyFlakes warning.
 - Started to resolve PyLint complaints

@todo: Polish this up to meet my code formatting and clarity standards.
@todo: Clean up the SMTP support. It's a mess.
@todo: Confirm there isn't any other generally-applicable information that
       could be included in the debugging dump.
@todo: Consider the pros and cons of offering a function which allows
       app-specific debugging information to be registered for inclusion.
"""

__author__ = "Filip Van Daemdonck"
__license__ = "whatever you want"

import inspect, linecache, pydoc, sys
# import traceback
from cStringIO import StringIO
from gettext import gettext as _
from pprint import pformat
from smtplib import SMTP

import pygtk
pygtk.require('2.0')
import gtk, pango

# TODO: Decide what to do with this
# def analyse(exctyp, value, tback):
#     trace = StringIO()
#     traceback.print_exception(exctyp, value, tback, None, trace)
#     return trace

def lookup(name, frame, lcls):
    # TODO: MyPy type signature
    '''Find the value for a given name in the given frame'''
    if name in lcls:
        return 'local', lcls[name]
    elif name in frame.f_globals:
        return 'global', frame.f_globals[name]
    elif '__builtins__' in frame.f_globals:
        builtins = frame.f_globals['__builtins__']
        if isinstance(builtins, dict):
            if name in builtins:
                return 'builtin', builtins[name]
        else:
            if hasattr(builtins, name):
                return 'builtin', getattr(builtins, name)
    return None, []

def analyse(exctyp, value, tback):
    # TODO: MyPy type signature
    import tokenize, keyword

    trace = StringIO()
    nlines = 3
    frecs = inspect.getinnerframes(tback, nlines)
    trace.write('Traceback (most recent call last):\n')
    # pylint: disable=unused-variable
    for frame, fname, lineno, funcname, context, cindex in frecs:
        trace.write('  File "%s", line %d, ' % (fname, lineno))
        args, varargs, varkw, lcls = inspect.getargvalues(frame)

        def readline(lno=[lineno], *args):
            if args:
                print args
            try:
                return linecache.getline(fname, lno[0])
            finally:
                lno[0] += 1
        _all, prev, name, scope = {}, None, '', None
        for ttype, tstr, stup, etup, lin in tokenize.generate_tokens(readline):
            if ttype == tokenize.NAME and tstr not in keyword.kwlist:
                if name:
                    if name[-1] == '.':
                        try:
                            val = getattr(prev, tstr)
                        except AttributeError:
                            # XXX skip the rest of this identifier only
                            break
                        name += tstr
                else:
                    assert not name and not scope
                    scope, val = lookup(tstr, frame, lcls)
                    name = tstr
                try:
                    if val:
                        prev = val
                except:
                    pass
                # TODO
                # print('  found', scope, 'name', name, 'val', val, 'in',
                #       prev, 'for token', tstr)
            elif tstr == '.':
                if prev:
                    name += '.'
            else:
                if name:
                    _all[name] = (scope, prev)
                prev, name, scope = None, '', None
                if ttype == tokenize.NEWLINE:
                    break

        trace.write(funcname +
          inspect.formatargvalues(args, varargs, varkw, lcls,
            formatvalue=lambda v: '=' + pydoc.text.repr(v)) + '\n')
        trace.write(''.join(['    ' + x.replace('\t', '  ')
                             for x in context if x.strip()]))
        if len(_all):
            trace.write('  variables: %s\n' % pformat(_all, indent=3))

    trace.write('%s: %s' % (exctyp.__name__, value))
    return trace

def _info(exctyp, value, tback):
    # TODO: MyPy type signature
    # pylint: disable=no-member
    trace = None
    dialog = gtk.MessageDialog(parent=None, flags=0, type=gtk.MESSAGE_WARNING,
                               buttons=gtk.BUTTONS_NONE)
    dialog.set_title(_("Bug Detected"))
    if gtk.check_version(2, 4, 0) is not None:
        dialog.set_has_separator(False)

    primary = _("<big><b>A programming error has been detected during the "
                "execution of this program.</b></big>")
    secondary = _("It probably isn't fatal, but should be reported to the "
                  "developers nonetheless.")

    try:
        # TODO: Refactor to not use a try/except
        email = feedback  # pylint: disable=undefined-variable
        dialog.add_button(_("Report..."), 3)
    except NameError:
        secondary += _("\n\nPlease remember to include the contents of the "
                       "Details dialog.")
        # could ask for an email address instead...

    try:
        setsec = dialog.format_secondary_text
    except AttributeError:
        raise
        # TODO
        # dialog.vbox.get_children()[0].get_children()[1].set_markup(
        #    '%s\n\n%s' % (primary, secondary))
        # lbl.set_property("use-markup", True)
    else:
        del setsec
        dialog.set_markup(primary)
        dialog.format_secondary_text(secondary)

    dialog.add_button(_("Details..."), 2)
    dialog.add_button(gtk.STOCK_CLOSE, gtk.RESPONSE_CLOSE)
    dialog.add_button(gtk.STOCK_QUIT, 1)

    while True:
        resp = dialog.run()
        if resp == 3:
            if trace is None:
                trace = analyse(exctyp, value, tback)

            # TODO: prettyprint, deal with problems in sending feedback, &tc
            # TODO: Refactor to not use a try/except
            try:
                server = smtphost  # pylint: disable=undefined-variable
            except NameError:
                server = 'localhost'

            message = ('From: buggy_application"\nTo: bad_programmer\n'
                'Subject: Exception feedback\n\n%s' % trace.getvalue())

            smtp = SMTP()
            smtp.connect(server)
            smtp.sendmail(email, (email,), message)
            smtp.quit()
            break

        elif resp == 2:
            if trace is None:
                trace = analyse(exctyp, value, tback)

            # Show details...
            details = gtk.Dialog(_("Bug Details"), dialog,
              gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
              (gtk.STOCK_CLOSE, gtk.RESPONSE_CLOSE, ))
            details.set_property("has-separator", False)

            textview = gtk.TextView()
            textview.show()
            textview.set_editable(False)
            textview.modify_font(pango.FontDescription("Monospace"))

            swin = gtk.ScrolledWindow()
            swin.show()
            swin.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
            swin.add(textview)
            details.vbox.add(swin)
            textbuffer = textview.get_buffer()
            textbuffer.set_text(trace.getvalue())

            monitor = gtk.gdk.screen_get_default().get_monitor_at_window(
                dialog.window)
            area = gtk.gdk.screen_get_default().get_monitor_geometry(monitor)
            try:
                w = area.width // 1.6
                h = area.height // 1.6
            except SyntaxError:
                # python < 2.2
                w = area.width / 1.6
                h = area.height / 1.6
            details.set_default_size(int(w), int(h))

            details.run()
            details.destroy()

        elif resp == 1 and gtk.main_level() > 0:
            gtk.main_quit()
            break
        else:
            break

    dialog.destroy()

def enable():  # type: () -> None
    """Call this to set gtkexcepthook as the default exception handler"""
    sys.excepthook = _info


if __name__ == '__main__':
    class TestFodder(object):  # pylint: disable=too-few-public-methods
        """Just something interesting to show in the augmented traceback"""
        y = 'Test'

        def __init__(self): # type: () -> None
            self.z = self  # pylint: disable=invalid-name
    x = TestFodder()
    w = ' e'

    # TODO: Refactor this
    # feedback = '[email protected]'
    # smtphost = 'mx.bigcorp.comp'
    # 1, x.z.y, f, w

    enable()
    raise Exception(x.z.y + w)

# vim: set sw=4 sts=4 :


1			"""Graphical exception handler for PyGTK applications
2
3			(c) 2003 Gustavo J A M Carneiro gjc at inescporto.pt
4			(c) 2004-2005 Filip Van Raemdonck
5			(c) 2009, 2011, 2017 Stephan Sokolow
6
7			http://www.daa.com.au/pipermail/pygtk/2003-August/005775.html
8			Message-ID: <[email protected]>
9			"The license is whatever you want."
10
11			Instructions: import gtkexcepthook; gtkexcepthook.enable()
12
13			Changes from Van Raemdonck version:
14			- Switched from auto-enable to gtkexcepthook.enable() to silence PyFlakes
15			false positives. (Borrowed naming convention from cgitb)
16			- Split out traceback import to silence PyFlakes warning.
17			- Started to resolve PyLint complaints
18
19			@todo: Polish this up to meet my code formatting and clarity standards.
20			@todo: Clean up the SMTP support. It's a mess.
21			@todo: Confirm there isn't any other generally-applicable information that
22			could be included in the debugging dump.
23			@todo: Consider the pros and cons of offering a function which allows
24			app-specific debugging information to be registered for inclusion.
25			"""
26
27			__author__ = "Filip Van Daemdonck"
28			__license__ = "whatever you want"
29
30			import inspect, linecache, pydoc, sys
31			# import traceback
32			from cStringIO import StringIO
33			from gettext import gettext as _
34			from pprint import pformat
35			from smtplib import SMTP
36
37			import pygtk
38			pygtk.require('2.0')
39			import gtk, pango
40
41			# TODO: Decide what to do with this
42			# def analyse(exctyp, value, tback):
43			# trace = StringIO()
44			# traceback.print_exception(exctyp, value, tback, None, trace)
45			# return trace
46
47			def lookup(name, frame, lcls):
48			# TODO: MyPy type signature
49			'''Find the value for a given name in the given frame'''
50			if name in lcls:
51			return 'local', lcls[name]
52			elif name in frame.f_globals:
53			return 'global', frame.f_globals[name]
54			elif '__builtins__' in frame.f_globals:
55			builtins = frame.f_globals['__builtins__']
56			if isinstance(builtins, dict):
57			if name in builtins:
58			return 'builtin', builtins[name]
59			else:
60			if hasattr(builtins, name):
61			return 'builtin', getattr(builtins, name)
62			return None, []
63
64			def analyse(exctyp, value, tback):
65			# TODO: MyPy type signature
66			import tokenize, keyword
67
68			trace = StringIO()
69			nlines = 3
70			frecs = inspect.getinnerframes(tback, nlines)
71			trace.write('Traceback (most recent call last):\n')
72			# pylint: disable=unused-variable
73			for frame, fname, lineno, funcname, context, cindex in frecs:
74			trace.write(' File "%s", line %d, ' % (fname, lineno))
75			args, varargs, varkw, lcls = inspect.getargvalues(frame)
76
77			def readline(lno=[lineno], *args):
78			if args:
79			print args
80			try:
81			return linecache.getline(fname, lno[0])
82			finally:
83			lno[0] += 1
84			_all, prev, name, scope = {}, None, '', None
85			for ttype, tstr, stup, etup, lin in tokenize.generate_tokens(readline):
86			if ttype == tokenize.NAME and tstr not in keyword.kwlist:
87			if name:
88			if name[-1] == '.':
89			try:
90			val = getattr(prev, tstr)
91			except AttributeError:
92			# XXX skip the rest of this identifier only
93			break
94			name += tstr
95			else:
96			assert not name and not scope
97			scope, val = lookup(tstr, frame, lcls)
98			name = tstr
99			try:
100			if val:
101			prev = val
102			except:
103			pass
104			# TODO
105			# print(' found', scope, 'name', name, 'val', val, 'in',
106			# prev, 'for token', tstr)
107			elif tstr == '.':
108			if prev:
109			name += '.'
110			else:
111			if name:
112			_all[name] = (scope, prev)
113			prev, name, scope = None, '', None
114			if ttype == tokenize.NEWLINE:
115			break
116
117			trace.write(funcname +
118			inspect.formatargvalues(args, varargs, varkw, lcls,
119			formatvalue=lambda v: '=' + pydoc.text.repr(v)) + '\n')
120			trace.write(''.join([' ' + x.replace('\t', ' ')
121			for x in context if x.strip()]))
122			if len(_all):
123			trace.write(' variables: %s\n' % pformat(_all, indent=3))
124
125			trace.write('%s: %s' % (exctyp.__name__, value))
126			return trace
127
128			def _info(exctyp, value, tback):
129			# TODO: MyPy type signature
130			# pylint: disable=no-member
131			trace = None
132			dialog = gtk.MessageDialog(parent=None, flags=0, type=gtk.MESSAGE_WARNING,
133			buttons=gtk.BUTTONS_NONE)
134			dialog.set_title(_("Bug Detected"))
135			if gtk.check_version(2, 4, 0) is not None:
136			dialog.set_has_separator(False)
137
138			primary = _("<big><b>A programming error has been detected during the "
139			"execution of this program.</b></big>")
140			secondary = _("It probably isn't fatal, but should be reported to the "
141			"developers nonetheless.")
142
143			try:
144			# TODO: Refactor to not use a try/except
145			email = feedback # pylint: disable=undefined-variable
146			dialog.add_button(_("Report..."), 3)
147			except NameError:
148			secondary += _("\n\nPlease remember to include the contents of the "
149			"Details dialog.")
150			# could ask for an email address instead...
151
152			try:
153			setsec = dialog.format_secondary_text
154			except AttributeError:
155			raise
156			# TODO
157			# dialog.vbox.get_children()[0].get_children()[1].set_markup(
158			# '%s\n\n%s' % (primary, secondary))
159			# lbl.set_property("use-markup", True)
160			else:
161			del setsec
162			dialog.set_markup(primary)
163			dialog.format_secondary_text(secondary)
164
165			dialog.add_button(_("Details..."), 2)
166			dialog.add_button(gtk.STOCK_CLOSE, gtk.RESPONSE_CLOSE)
167			dialog.add_button(gtk.STOCK_QUIT, 1)
168
169			while True:
170			resp = dialog.run()
171			if resp == 3:
172			if trace is None:
173			trace = analyse(exctyp, value, tback)
174
175			# TODO: prettyprint, deal with problems in sending feedback, &tc
176			# TODO: Refactor to not use a try/except
177			try:
178			server = smtphost # pylint: disable=undefined-variable
179			except NameError:
180			server = 'localhost'
181
182			message = ('From: buggy_application"\nTo: bad_programmer\n'
183			'Subject: Exception feedback\n\n%s' % trace.getvalue())
184
185			smtp = SMTP()
186			smtp.connect(server)
187			smtp.sendmail(email, (email,), message)
188			smtp.quit()
189			break
190
191			elif resp == 2:
192			if trace is None:
193			trace = analyse(exctyp, value, tback)
194
195			# Show details...
196			details = gtk.Dialog(_("Bug Details"), dialog,
197			gtk.DIALOG_MODAL \| gtk.DIALOG_DESTROY_WITH_PARENT,
198			(gtk.STOCK_CLOSE, gtk.RESPONSE_CLOSE, ))
199			details.set_property("has-separator", False)
200
201			textview = gtk.TextView()
202			textview.show()
203			textview.set_editable(False)
204			textview.modify_font(pango.FontDescription("Monospace"))
205
206			swin = gtk.ScrolledWindow()
207			swin.show()
208			swin.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
209			swin.add(textview)
210			details.vbox.add(swin)
211			textbuffer = textview.get_buffer()
212			textbuffer.set_text(trace.getvalue())
213
214			monitor = gtk.gdk.screen_get_default().get_monitor_at_window(
215			dialog.window)
216			area = gtk.gdk.screen_get_default().get_monitor_geometry(monitor)
217			try:
218			w = area.width // 1.6
219			h = area.height // 1.6
220			except SyntaxError:
221			# python < 2.2
222			w = area.width / 1.6
223			h = area.height / 1.6
224			details.set_default_size(int(w), int(h))
225
226			details.run()
227			details.destroy()
228
229			elif resp == 1 and gtk.main_level() > 0:
230			gtk.main_quit()
231			break
232			else:
233			break
234
235			dialog.destroy()
236
237			def enable(): # type: () -> None
238			"""Call this to set gtkexcepthook as the default exception handler"""
239			sys.excepthook = _info
240
241
242			if __name__ == '__main__':
243			class TestFodder(object): # pylint: disable=too-few-public-methods
244			"""Just something interesting to show in the augmented traceback"""
245			y = 'Test'
246
247			def __init__(self): # type: () -> None
248			self.z = self # pylint: disable=invalid-name
249			x = TestFodder()
250			w = ' e'
251
252			# TODO: Refactor this
253			# feedback = '[email protected]'
254			# smtphost = 'mx.bigcorp.comp'
255			# 1, x.z.y, f, w
256
257			enable()
258			raise Exception(x.z.y + w)
259
260			# vim: set sw=4 sts=4 :
261

ssokolow / quicktile

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