Add flake2tasks.py for converting output of the flake8 Python linter into task files

Change-Id: I85462c9323aaac91076f5025a761a9d1fb7208e4
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>

scripts/flake2tasks.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+############################################################################
+#
+# Copyright (C) 2019 The Qt Company Ltd.
+# Contact: https://www.qt.io/licensing/
+#
+# This file is part of Qt Creator.
+#
+# Commercial License Usage
+# Licensees holding valid commercial Qt licenses may use this file in
+# accordance with the commercial license agreement provided with the
+# Software or, alternatively, in accordance with the terms contained in
+# a written agreement between you and The Qt Company. For licensing terms
+# and conditions see https://www.qt.io/terms-conditions. For further
+# information use the contact form at https://www.qt.io/contact-us.
+#
+# GNU General Public License Usage
+# Alternatively, this file may be used under the terms of the GNU
+# General Public License version 3 as published by the Free Software
+# Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+# included in the packaging of this file. Please review the following
+# information to ensure the GNU General Public License requirements will
+# be met: https://www.gnu.org/licenses/gpl-3.0.html.
+#
+############################################################################
+
+'''
+flake2tasks.py - Convert flake8 warnings into Qt Creator task files.
+
+SYNOPSIS
+
+    flake2tasks.py < logfile > taskfile
+'''
+
+import sys
+import re
+
+if __name__ == '__main__':
+    pattern = re.compile(r'^([^:]+):(\d+):\d+: E\d+ (.*)$')
+    while True:
+        line = sys.stdin.readline().rstrip()
+        if not line:
+            break
+        match = pattern.match(line)
+        if match:
+            file_name = match.group(1).replace('\\', '/')
+            line_number = match.group(2)
+            text = match.group(3)
+            output = "{}\t{}\twarn\t{}".format(file_name, line_number, text)
+            print(output)