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# -*- coding: ascii -*-
#
# Copyright 2006 - 2014
# Andr\xe9 Malo or his licensors, as applicable
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
=================================
Support for code analysis tools
=================================
Support for code analysis tools.
"""
__author__ = "Andr\xe9 Malo"
__docformat__ = "restructuredtext en"
import re as _re
import sys as _sys
from _setup import term as _term
from _setup import shell as _shell
class NotFinished(Exception):
""" Exception used for message passing in the stream filter """
class NotParseable(Exception):
""" Exception used for message passing in the stream filter """
class SpecialMessage(Exception):
""" Exception used for message passing in the stream filter """
class FilterStream(object):
""" Stream filter """
_LINERE = _re.compile(r'''
(?P<name>[^:]+)
:
(?P<lineno>\d+)
:\s+
\[(?P<mid>[^\],]+)(?:,\s+(?P<func>[^\]]+))?\]
\s+
(?P<desc>.*)
''', _re.X)
_SIMRE = _re.compile(r'in (?P<number>\d+) files')
_CYCRE = _re.compile(r'\((?P<cycle>[^)]+)\)')
def __init__(self, term, stream=_sys.stdout):
self.written = False
self._stream = stream
self._lastname = None
self._cycled = False
self._term = dict(term)
self._buffer = ''
def write(self, towrite):
""" Stream write function """
self._buffer += towrite
term = self._term
while True:
try:
name, lineno, mid, func, desc = self._parse()
except NotFinished:
break
except SpecialMessage as e:
self._dospecial(e)
continue
except NotParseable as e:
self._print_literal(str(e.args[0]))
continue
if name != self._lastname:
if self._lastname is not None:
self._stream.write("\n")
term['path'] = name
self._stream.write(
"%(BOLD)s>>> %(path)s%(NORMAL)s\n" % term
)
self._lastname = name
self.written = True
term['mid'] = mid
if mid.startswith('E') or mid.startswith('F'):
self._stream.write("%(BOLD)s%(RED)s%(mid)s%(NORMAL)s" % term)
elif mid == 'W0511':
self._stream.write(
"%(BOLD)s%(GREEN)s%(mid)s%(NORMAL)s" % term
)
else:
self._stream.write(
"%(BOLD)s%(YELLOW)s%(mid)s%(NORMAL)s" % term
)
if int(lineno) != 0:
term['lineno'] = lineno
self._stream.write(" (%(lineno)s" % term)
if func:
term['func'] = func
self._stream.write(
", %(BOLD)s%(YELLOW)s%(func)s%(NORMAL)s" % term
)
self._stream.write(')')
self._stream.write(": %s\n" % desc)
self._stream.flush()
return
def _print_literal(self, line):
""" Print literal """
suppress = (
line.startswith('Unable to get imported names for ') or
line.startswith(
"Exception exceptions.RuntimeError: 'generator "
"ignored GeneratorExit' in <generator object at") or
line.startswith(
"Exception RuntimeError: 'generator "
"ignored GeneratorExit' in <generator object") or
not line.strip()
)
if not suppress:
self._stream.write("%s\n" % line)
self._stream.flush()
self.written = True
def _dospecial(self, e):
""" Deal with special messages """
if e.args[0] == 'R0401':
pos = self._buffer.find('\n')
_, self._buffer = (
self._buffer[:pos + 1], self._buffer[pos + 1:]
)
term = self._term
term['mid'] = e.args[0]
if not self._cycled:
self._cycled = True
self._stream.write('\n')
self._stream.write(
"%(BOLD)s%(YELLOW)s%(mid)s%(NORMAL)s" % term
)
self._stream.write(": Cyclic imports\n")
match = self._CYCRE.search(e.args[1])
term['cycle'] = match.group('cycle')
self._stream.write("%(BOLD)s@@@ %(NORMAL)s%(cycle)s\n" % term)
self._stream.flush()
self.written = True
elif e.args[0] == 'R0801':
match = self._SIMRE.search(e.args[1])
if not match:
raise AssertionError(
'Could not determine number of similar files'
)
numfiles = int(match.group('number'))
pos = -1
for _ in range(numfiles + 1):
pos = self._buffer.find('\n', pos + 1)
if pos >= 0:
lines = self._buffer[:pos + 1]
self._buffer = self._buffer[pos + 1:]
term = self._term
self._stream.write("\n")
for name in lines.splitlines()[1:]:
name = name.rstrip()[2:]
term['path'] = name
self._stream.write(
"%(BOLD)s=== %(path)s%(NORMAL)s\n" % term
)
self._lastname = name
term['mid'] = e.args[0]
self._stream.write(
"%(BOLD)s%(YELLOW)s%(mid)s%(NORMAL)s" % term
)
self._stream.write(": %s\n" % e.args[1])
self._stream.flush()
self.written = True
def _parse(self):
""" Parse output """
if '\n' not in self._buffer:
raise NotFinished()
line = self._buffer[:self._buffer.find('\n') + 1]
self._buffer = self._buffer[len(line):]
line = line.rstrip()
match = self._LINERE.match(line)
if not match:
raise NotParseable(line)
mid = match.group('mid')
if mid in ('R0801', 'R0401'):
self._buffer = "%s\n%s" % (line, self._buffer)
raise SpecialMessage(mid, match.group('desc'))
return match.group('name', 'lineno', 'mid', 'func', 'desc')
def run(config, *args):
""" Run pylint """
try:
from pylint import lint
from pylint.reporters import text
except ImportError:
return 2
if config is None:
config = _shell.native('pylintrc')
argv = [
'--rcfile', config,
'--reports', 'no',
]
stream = FilterStream(_term.terminfo())
old_stderr = _sys.stderr
try:
# pylint: disable = E1101
_sys.stderr = stream
from pylint import __pkginfo__
if __pkginfo__.numversion >= (1, 0, 0):
reporter = text.TextReporter(stream)
argv.extend([
'--msg-template',
'{path}:{line}: [{msg_id}({symbol}), {obj}] {msg}'
])
else:
argv.extend([
'--output-format', 'parseable',
'--include-ids', 'yes'
])
if __pkginfo__.numversion < (0, 13):
lint.REPORTER_OPT_MAP['parseable'] = \
lambda: text.TextReporter2(stream)
reporter = text.TextReporter2(stream)
else:
reporter = text.ParseableTextReporter(stream)
lint.REPORTER_OPT_MAP['parseable'] = lambda: reporter
for path in args:
try:
try:
lint.Run(argv + [path], reporter=reporter)
except SystemExit:
pass # don't accept the exit. strange errors happen...
if stream.written:
print()
stream.written = False
except KeyboardInterrupt:
print()
raise
finally:
_sys.stderr = old_stderr
return 0
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