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|
import os
import sys
import types
import platform
import warnings
try:
import urlparse
except ImportError: # pragma: no cover
from urllib import parse as urlparse
try:
import fcntl
except ImportError: # pragma: no cover
fcntl = None # windows
# True if we are running on Python 3.
PY2 = sys.version_info[0] == 2
PY3 = sys.version_info[0] == 3
# True if we are running on Windows
WIN = platform.system() == "Windows"
if PY3: # pragma: no cover
string_types = (str,)
integer_types = (int,)
class_types = (type,)
text_type = str
binary_type = bytes
long = int
else:
string_types = (basestring,)
integer_types = (int, long)
class_types = (type, types.ClassType)
text_type = unicode
binary_type = str
long = long
if PY3: # pragma: no cover
from urllib.parse import unquote_to_bytes
def unquote_bytes_to_wsgi(bytestring):
return unquote_to_bytes(bytestring).decode("latin-1")
else:
from urlparse import unquote as unquote_to_bytes
def unquote_bytes_to_wsgi(bytestring):
return unquote_to_bytes(bytestring)
def text_(s, encoding="latin-1", errors="strict"):
""" If ``s`` is an instance of ``binary_type``, return
``s.decode(encoding, errors)``, otherwise return ``s``"""
if isinstance(s, binary_type):
return s.decode(encoding, errors)
return s # pragma: no cover
if PY3: # pragma: no cover
def tostr(s):
if isinstance(s, text_type):
s = s.encode("latin-1")
return str(s, "latin-1", "strict")
def tobytes(s):
return bytes(s, "latin-1")
else:
tostr = str
def tobytes(s):
return s
if PY3: # pragma: no cover
import builtins
exec_ = getattr(builtins, "exec")
def reraise(tp, value, tb=None):
if value is None:
value = tp
if value.__traceback__ is not tb:
raise value.with_traceback(tb)
raise value
del builtins
else: # pragma: no cover
def exec_(code, globs=None, locs=None):
"""Execute code in a namespace."""
if globs is None:
frame = sys._getframe(1)
globs = frame.f_globals
if locs is None:
locs = frame.f_locals
del frame
elif locs is None:
locs = globs
exec("""exec code in globs, locs""")
exec_(
"""def reraise(tp, value, tb=None):
raise tp, value, tb
"""
)
try:
from StringIO import StringIO as NativeIO
except ImportError: # pragma: no cover
from io import StringIO as NativeIO
try:
import httplib
except ImportError: # pragma: no cover
from http import client as httplib
try:
MAXINT = sys.maxint
except AttributeError: # pragma: no cover
MAXINT = sys.maxsize
# Fix for issue reported in https://github.com/Pylons/waitress/issues/138,
# Python on Windows may not define IPPROTO_IPV6 in socket.
import socket
HAS_IPV6 = socket.has_ipv6
if hasattr(socket, "IPPROTO_IPV6") and hasattr(socket, "IPV6_V6ONLY"):
IPPROTO_IPV6 = socket.IPPROTO_IPV6
IPV6_V6ONLY = socket.IPV6_V6ONLY
else: # pragma: no cover
if WIN:
IPPROTO_IPV6 = 41
IPV6_V6ONLY = 27
else:
warnings.warn(
"OS does not support required IPv6 socket flags. This is requirement "
"for Waitress. Please open an issue at https://github.com/Pylons/waitress. "
"IPv6 support has been disabled.",
RuntimeWarning,
)
HAS_IPV6 = False
def set_nonblocking(fd): # pragma: no cover
if PY3 and sys.version_info[1] >= 5:
os.set_blocking(fd, False)
elif fcntl is None:
raise RuntimeError("no fcntl module present")
else:
flags = fcntl.fcntl(fd, fcntl.F_GETFL, 0)
flags = flags | os.O_NONBLOCK
fcntl.fcntl(fd, fcntl.F_SETFL, flags)
if PY3:
ResourceWarning = ResourceWarning
else:
ResourceWarning = UserWarning
def qualname(cls):
if PY3:
return cls.__qualname__
return cls.__name__
try:
import thread
except ImportError:
# py3
import _thread as thread
|
