Split up flake8/run.py

I've preserved the API for users expecting their hooks and other things to
work.

That said, I'm working on #51 now as well.
This commit is contained in:
Ian Cordasco 2013-01-01 23:09:33 -05:00
parent 08099588df
commit 3bd8a21f62
4 changed files with 270 additions and 270 deletions

80
flake8/hooks.py Normal file
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@ -0,0 +1,80 @@
import os
from flake8.util import _initpep8, pep8style, skip_file
from subprocess import Popen, PIPE
def git_hook(complexity=-1, strict=False, ignore=None, lazy=False):
from flake8.main import check_file
_initpep8()
if ignore:
pep8style.options.ignore = ignore
warnings = 0
gitcmd = "git diff-index --cached --name-only HEAD"
if lazy:
gitcmd = gitcmd.replace('--cached ', '')
_, files_modified, _ = run(gitcmd)
for filename in files_modified:
ext = os.path.splitext(filename)[-1]
if ext != '.py':
continue
if not os.path.exists(filename):
continue
warnings += check_file(path=filename, ignore=ignore,
complexity=complexity)
if strict:
return warnings
return 0
def hg_hook(ui, repo, **kwargs):
from flake8.main import check_file
_initpep8()
complexity = ui.config('flake8', 'complexity', default=-1)
warnings = 0
for file_ in _get_files(repo, **kwargs):
warnings += check_file(file_, complexity)
strict = ui.configbool('flake8', 'strict', default=True)
if strict:
return warnings
return 0
def run(command):
p = Popen(command.split(), stdout=PIPE, stderr=PIPE)
p.wait()
return (p.returncode, [line.strip() for line in p.stdout.readlines()],
[line.strip() for line in p.stderr.readlines()])
def _get_files(repo, **kwargs):
seen = set()
for rev in range(repo[kwargs['node']], len(repo)):
for file_ in repo[rev].files():
file_ = os.path.join(repo.root, file_)
if file_ in seen or not os.path.exists(file_):
continue
seen.add(file_)
if not file_.endswith('.py'):
continue
if skip_file(file_):
continue
yield file_
def find_vcs():
if os.path.isdir('.git'):
if not os.path.isdir('.git/hooks'):
os.mkdir('.git/hooks')
return '.git/hooks/pre-commit'
elif os.path.isdir('.hg'):
return '.hg/hgrc'
return ''

169
flake8/main.py Normal file
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@ -0,0 +1,169 @@
import os
import sys
import pep8
import flakey
import select
import optparse
from flake8 import mccabe
from flake8 import __version__
from flake8.util import _initpep8, skip_file
pep8style = None
def get_parser():
"""Create a custom OptionParser"""
def version(option, opt, value, parser):
parser.print_usage()
parser.print_version()
sys.exit(0)
# Create our own parser
parser = optparse.OptionParser('%prog [options] [file.py|directory]',
version=version)
parser.version = '{0} (pep8: {1}, flakey: {2})'.format(
__version__, pep8.__version__, flakey.__version__)
parser.remove_option('--version')
# don't overlap with pep8's verbose option
parser.add_option('--builtins', default='', dest='builtins',
help="append builtin functions to flakey's "
"_MAGIC_BUILTINS")
parser.add_option('--ignore', default='',
help='skip errors and warnings (e.g. E4,W)')
parser.add_option('--exit-zero', action='store_true', default=False,
help='Exit with status 0 even if there are errors')
parser.add_option('--max-complexity', default=-1, action='store',
type='int', help='McCabe complexity threshold')
parser.add_option('-V', '--version', action='callback',
callback=version,
help='Print the version info for flake8')
return parser
def main():
global pep8style
# parse out our flags so pep8 doesn't get confused
parser = get_parser()
opts, sys.argv = parser.parse_args()
# make sure pep8 gets the information it expects
sys.argv.insert(0, 'pep8')
pep8style = pep8.StyleGuide(parse_argv=True, config_file=True)
options = pep8style.options
complexity = opts.max_complexity
builtins = set(opts.builtins.split(','))
warnings = 0
stdin = None
if builtins:
orig_builtins = set(flakey.checker._MAGIC_GLOBALS)
flakey.checker._MAGIC_GLOBALS = orig_builtins | builtins
if pep8style.paths and options.filename is not None:
for path in _get_python_files(pep8style.paths):
if path == '-':
if stdin is None:
stdin = read_stdin()
warnings += check_code(stdin, opts.ignore, complexity)
else:
warnings += check_file(path, opts.ignore, complexity)
else:
stdin = read_stdin()
warnings += check_code(stdin, opts.ignore, complexity)
if opts.exit_zero:
raise SystemExit(0)
raise SystemExit(warnings)
def check_file(path, ignore=(), complexity=-1):
if pep8style.excluded(path):
return 0
warning = flakey.checkPath(path)
warnings = flakey.print_messages(warning, ignore=ignore)
warnings += pep8style.input_file(path)
if complexity > -1:
warnings += mccabe.get_module_complexity(path, complexity)
return warnings
def check_code(code, ignore=(), complexity=-1):
warning = flakey.check(code, 'stdin')
warnings = flakey.print_messages(warning, ignore=ignore)
warnings += pep8style.input_file(None, lines=code.split('\n'))
if complexity > -1:
warnings += mccabe.get_code_complexity(code, complexity)
return warnings
def read_stdin():
# wait for 1 second on the stdin fd
reads, __, __ = select.select([sys.stdin], [], [], 1.)
if reads == []:
print('input not specified')
raise SystemExit(1)
return sys.stdin.read()
try:
from setuptools import Command
except ImportError:
Flake8Command = None
else:
class Flake8Command(Command):
description = "Run flake8 on modules registered in setuptools"
user_options = []
def initialize_options(self):
pass
def finalize_options(self):
pass
def distribution_files(self):
if self.distribution.packages:
for package in self.distribution.packages:
yield package.replace(".", os.path.sep)
if self.distribution.py_modules:
for filename in self.distribution.py_modules:
yield "%s.py" % filename
def run(self):
_initpep8()
# _get_python_files can produce the same file several
# times, if one of its paths is a parent of another. Keep
# a set of checked files to de-duplicate.
checked = set()
warnings = 0
for path in _get_python_files(self.distribution_files()):
if path not in checked:
warnings += check_file(path)
checked.add(path)
raise SystemExit(warnings > 0)
def _get_python_files(paths):
for path in paths:
if os.path.isdir(path):
for dirpath, dirnames, filenames in os.walk(path):
if pep8style.excluded(dirpath):
continue
for filename in filenames:
if not filename.endswith('.py'):
continue
fullpath = os.path.join(dirpath, filename)
if not skip_file(fullpath) or pep8style.excluded(fullpath):
yield fullpath
else:
if not skip_file(path) or pep8style.excluded(path):
yield path

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@ -2,276 +2,10 @@
"""
Implementation of the command-line I{flake8} tool.
"""
import sys
import os
import os.path
import optparse
from subprocess import PIPE, Popen
import select
from flake8 import mccabe
from flake8.util import skip_file
from flake8 import __version__
import pep8
import flakey
pep8style = None
def check_file(path, ignore=(), complexity=-1):
if pep8style.excluded(path):
return 0
warning = flakey.checkPath(path)
warnings = flakey.print_messages(warning, ignore=ignore)
warnings += pep8style.input_file(path)
if complexity > -1:
warnings += mccabe.get_module_complexity(path, complexity)
return warnings
def check_code(code, ignore=(), complexity=-1):
warning = flakey.check(code, 'stdin')
warnings = flakey.print_messages(warning, ignore=ignore)
warnings += pep8style.input_file(None, lines=code.split('\n'))
if complexity > -1:
warnings += mccabe.get_code_complexity(code, complexity)
return warnings
def _get_python_files(paths):
for path in paths:
if os.path.isdir(path):
for dirpath, dirnames, filenames in os.walk(path):
if pep8style.excluded(dirpath):
continue
for filename in filenames:
if not filename.endswith('.py'):
continue
fullpath = os.path.join(dirpath, filename)
if not skip_file(fullpath) or pep8style.excluded(fullpath):
yield fullpath
else:
if not skip_file(path) or pep8style.excluded(path):
yield path
def read_stdin():
# wait for 1 second on the stdin fd
reads, __, __ = select.select([sys.stdin], [], [], 1.)
if reads == []:
print('input not specified')
raise SystemExit(1)
return sys.stdin.read()
def get_parser():
"""Create a custom OptionParser"""
def version(option, opt, value, parser):
parser.print_usage()
parser.print_version()
sys.exit(0)
# Create our own parser
parser = optparse.OptionParser('%prog [options] [file.py|directory]',
version=version)
parser.version = '{0} (pep8: {1}, flakey: {2})'.format(
__version__, pep8.__version__, flakey.__version__)
parser.remove_option('--version')
# don't overlap with pep8's verbose option
parser.add_option('--builtins', default='', dest='builtins',
help="append builtin functions to flakey's "
"_MAGIC_BUILTINS")
parser.add_option('--ignore', default='',
help='skip errors and warnings (e.g. E4,W)')
parser.add_option('--exit-zero', action='store_true', default=False,
help='Exit with status 0 even if there are errors')
parser.add_option('--max-complexity', default=-1, action='store',
type='int', help='McCabe complexity threshold')
parser.add_option('-V', '--version', action='callback',
callback=version,
help='Print the version info for flake8')
return parser
def main():
global pep8style
# parse out our flags so pep8 doesn't get confused
parser = get_parser()
opts, sys.argv = parser.parse_args()
# make sure pep8 gets the information it expects
sys.argv.insert(0, 'pep8')
pep8style = pep8.StyleGuide(parse_argv=True, config_file=True)
options = pep8style.options
complexity = opts.max_complexity
builtins = set(opts.builtins.split(','))
warnings = 0
stdin = None
if builtins:
orig_builtins = set(flakey.checker._MAGIC_GLOBALS)
flakey.checker._MAGIC_GLOBALS = orig_builtins | builtins
if pep8style.paths and options.filename is not None:
for path in _get_python_files(pep8style.paths):
if path == '-':
if stdin is None:
stdin = read_stdin()
warnings += check_code(stdin, opts.ignore, complexity)
else:
warnings += check_file(path, opts.ignore, complexity)
else:
stdin = read_stdin()
warnings += check_code(stdin, opts.ignore, complexity)
if opts.exit_zero:
raise SystemExit(0)
raise SystemExit(warnings)
def _get_files(repo, **kwargs):
seen = set()
for rev in range(repo[kwargs['node']], len(repo)):
for file_ in repo[rev].files():
file_ = os.path.join(repo.root, file_)
if file_ in seen or not os.path.exists(file_):
continue
seen.add(file_)
if not file_.endswith('.py'):
continue
if skip_file(file_):
continue
yield file_
class _PEP8Options(object):
# Default options taken from pep8.process_options()
max_complexity = -1
verbose = False
quiet = False
no_repeat = False
exclude = [exc.rstrip('/') for exc in pep8.DEFAULT_EXCLUDE.split(',')]
filename = ['*.py']
select = []
ignore = pep8.DEFAULT_IGNORE.split(',') # or []?
show_source = False
show_pep8 = False
statistics = False
count = False
benchmark = False
testsuite = ''
doctest = False
max_line_length = pep8.MAX_LINE_LENGTH
def _initpep8():
# default pep8 setup
global pep8style
if pep8style is None:
pep8style = pep8.StyleGuide(config_file=True)
pep8style.options.physical_checks = pep8.find_checks('physical_line')
pep8style.options.logical_checks = pep8.find_checks('logical_line')
pep8style.options.counters = dict.fromkeys(pep8.BENCHMARK_KEYS, 0)
pep8style.options.messages = {}
pep8style.options.max_line_length = 79
pep8style.args = []
def run(command):
p = Popen(command.split(), stdout=PIPE, stderr=PIPE)
p.wait()
return (p.returncode, [line.strip() for line in p.stdout.readlines()],
[line.strip() for line in p.stderr.readlines()])
def git_hook(complexity=-1, strict=False, ignore=None, lazy=False):
_initpep8()
if ignore:
pep8style.options.ignore = ignore
warnings = 0
gitcmd = "git diff-index --cached --name-only HEAD"
if lazy:
gitcmd = gitcmd.replace('--cached ', '')
_, files_modified, _ = run(gitcmd)
for filename in files_modified:
ext = os.path.splitext(filename)[-1]
if ext != '.py':
continue
if not os.path.exists(filename):
continue
warnings += check_file(path=filename, ignore=ignore,
complexity=complexity)
if strict:
return warnings
return 0
def hg_hook(ui, repo, **kwargs):
_initpep8()
complexity = ui.config('flake8', 'complexity', default=-1)
warnings = 0
for file_ in _get_files(repo, **kwargs):
warnings += check_file(file_, complexity)
strict = ui.configbool('flake8', 'strict', default=True)
if strict:
return warnings
return 0
try:
from setuptools import Command
except ImportError:
Flake8Command = None
else:
class Flake8Command(Command):
description = "Run flake8 on modules registered in setuptools"
user_options = []
def initialize_options(self):
pass
def finalize_options(self):
pass
def distribution_files(self):
if self.distribution.packages:
for package in self.distribution.packages:
yield package.replace(".", os.path.sep)
if self.distribution.py_modules:
for filename in self.distribution.py_modules:
yield "%s.py" % filename
def run(self):
_initpep8()
# _get_python_files can produce the same file several
# times, if one of its paths is a parent of another. Keep
# a set of checked files to de-duplicate.
checked = set()
warnings = 0
for path in _get_python_files(self.distribution_files()):
if path not in checked:
warnings += check_file(path)
checked.add(path)
raise SystemExit(warnings > 0)
from flake8.hooks import git_hook, hg_hook # noqa
from flake8.main import main
from flake8.main import (check_code, check_file, get_parser, # noqa
Flake8Command) # noqa
if __name__ == '__main__':

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@ -2,6 +2,8 @@ from __future__ import with_statement
import re
import os
pep8style = None
def skip_warning(warning, ignore=[]):
# XXX quick dirty hack, just need to keep the line in the warning
@ -40,3 +42,18 @@ def skip_file(path):
finally:
f.close()
return _NOQA.search(content) is not None
def _initpep8():
# default pep8 setup
global pep8style
import pep8
if pep8style is None:
pep8style = pep8.StyleGuide(config_file=True)
pep8style.options.physical_checks = pep8.find_checks('physical_line')
pep8style.options.logical_checks = pep8.find_checks('logical_line')
pep8style.options.counters = dict.fromkeys(pep8.BENCHMARK_KEYS, 0)
pep8style.options.messages = {}
pep8style.options.max_line_length = 79
pep8style.args = []
return pep8style