From aaa14dc4e17efb7b220c1140e3b4728d32cd21c2 Mon Sep 17 00:00:00 2001
From: Tarek Ziade <tarek@ziade.org>
Date: Fri, 27 Jul 2012 11:52:37 +0200
Subject: [PATCH] fixed the stdin, thanks to zeeg

---
 flake8/pep8.py |  7 ++++++-
 flake8/run.py  | 17 +++++++++++++++--
 setup.py       |  2 +-
 3 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/flake8/pep8.py b/flake8/pep8.py
index 7150fb1..a09fcdb 100644
--- a/flake8/pep8.py
+++ b/flake8/pep8.py
@@ -1127,6 +1127,9 @@ class Checker(object):
         if filename is None:
             self.filename = 'stdin'
             self.lines = lines or []
+        elif hasattr(filename, 'readlines'):
+            self.lines = filename.readlines()
+            self.filename = 'stdin'
         elif lines is None:
             self.lines = readlines(filename)
         else:
@@ -1644,8 +1647,10 @@ def process_options(arglist=None):
         options.repeat = False
     if options.testsuite:
         args.append(options.testsuite)
+
     if not args and not options.doctest:
-        parser.error('input not specified')
+        pass
+
     options.prog = os.path.basename(sys.argv[0])
     options.exclude = options.exclude.split(',')
     for index, value in enumerate(options.exclude):
diff --git a/flake8/run.py b/flake8/run.py
index cd3a1ee..649f7b9 100644
--- a/flake8/run.py
+++ b/flake8/run.py
@@ -6,6 +6,11 @@ import sys
 import os
 import os.path
 from subprocess import PIPE, Popen
+import select
+try:
+    from StringIO import StringIO   # NOQA
+except ImportError:
+    from io import StringIO         # NOQA
 
 from flake8.util import skip_file
 from flake8 import pep8
@@ -22,7 +27,8 @@ def check_file(path, complexity=-1):
 
 
 def check_code(code, complexity=-1):
-    warnings = pyflakes.check(code, '<stdin>')
+    warnings = pyflakes.check(code, 'stdin')
+    warnings += pep8.input_file(StringIO(code))
     if complexity > -1:
         warnings += mccabe.get_code_complexity(code, complexity)
     return warnings
@@ -53,10 +59,17 @@ def main():
     if builtins:
         orig_builtins = set(pyflakes._MAGIC_GLOBALS)
         pyflakes._MAGIC_GLOBALS = orig_builtins | builtins
-    if args:
+
+    if args and options.filename is not None:
         for path in _get_python_files(args):
             warnings += check_file(path, complexity)
     else:
+        # wait for 1 second on the stdin fd
+        reads, __, __ = select.select([sys.stdin], [], [], 1.)
+        if reads == []:
+            print('input not specified')
+            raise SystemExit(1)
+
         stdin = sys.stdin.read()
         warnings += check_code(stdin, complexity)
 
diff --git a/setup.py b/setup.py
index 4c036bf..dee5365 100755
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@ import sys
 ispy3 = sys.version_info[0] == 3
 
 if ispy3:
-    from distutils.core import setup
+    from distutils.core import setup    # NOQA
 else:
     try:
         from setuptools import setup    # NOQA