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# code stolen from "six"
import sys
import types
# True if we are running on Python 3.
PY3 = sys.version_info[0] == 3
if PY3: # pragma: no cover
string_types = str,
integer_types = int,
class_types = type,
text_type = str
long = int
else:
string_types = basestring,
integer_types = (int, long)
class_types = (type, types.ClassType)
text_type = unicode
long = long
# TODO check if errors is ever used
def text_(s, encoding='latin-1', errors='strict'):
if isinstance(s, bytes):
return s.decode(encoding, errors)
return s
def bytes_(s, encoding='latin-1', errors='strict'):
if isinstance(s, text_type):
return s.encode(encoding, errors)
return s
if PY3: # pragma: no cover
def native_(s, encoding='latin-1', errors='strict'):
if isinstance(s, text_type):
return s
return str(s, encoding, errors)
else:
def native_(s, encoding='latin-1', errors='strict'):
if isinstance(s, text_type):
return s.encode(encoding, errors)
return str(s)
try:
from queue import Queue, Empty
except ImportError:
from Queue import Queue, Empty
if PY3: # pragma: no cover
from urllib import parse
urlparse = parse
from urllib.parse import quote as url_quote
from urllib.parse import urlencode as url_encode, quote_plus
from urllib.request import urlopen as url_open
else:
import urlparse
from urllib import quote_plus
from urllib import quote as url_quote
from urllib import unquote as url_unquote
from urllib import urlencode as url_encode
from urllib2 import urlopen as url_open
if PY3: # pragma: no cover
def reraise(exc_info):
etype, exc, tb = exc_info
if exc.__traceback__ is not tb:
raise exc.with_traceback(tb)
raise exc
else: # pragma: no cover
exec("def reraise(exc): raise exc[0], exc[1], exc[2]")
if PY3: # pragma: no cover
def iteritems_(d):
return d.items()
def itervalues_(d):
return d.values()
else:
def iteritems_(d):
return d.iteritems()
def itervalues_(d):
return d.itervalues()
if PY3: # pragma: no cover
def unquote(string):
if not string:
return b''
res = string.split(b'%')
if len(res) != 1:
string = res[0]
for item in res[1:]:
try:
string += bytes([int(item[:2], 16)]) + item[2:]
except ValueError:
string += b'%' + item
return string
def url_unquote(s):
return unquote(s.encode('ascii')).decode('latin-1')
def parse_qsl_text(qs, encoding='utf-8'):
qs = qs.encode('latin-1')
qs = qs.replace(b'+', b' ')
pairs = [s2 for s1 in qs.split(b'&') for s2 in s1.split(b';') if s2]
for name_value in pairs:
nv = name_value.split(b'=', 1)
if len(nv) != 2:
nv.append('')
name = unquote(nv[0])
value = unquote(nv[1])
yield (name.decode(encoding), value.decode(encoding))
else:
from urlparse import parse_qsl
def parse_qsl_text(qs, encoding='utf-8'):
qsl = parse_qsl(
qs,
keep_blank_values=True,
strict_parsing=False
)
for (x, y) in qsl:
yield (x.decode(encoding), y.decode(encoding))
if PY3: # pragma no cover
from html import escape
else:
from cgi import escape
if PY3:
import cgi
import tempfile
from cgi import FieldStorage as _cgi_FieldStorage
# Various different FieldStorage work-arounds required on Python 3.x
if sys.version_info[:3] < (3, 7, 0): # pragma no cover
# Assume that this will be fixed in Python 3.7
class cgi_FieldStorage(_cgi_FieldStorage):
# Work around https://bugs.python.org/issue27777
def make_file(self):
if self._binary_file or self.length >= 0:
return tempfile.TemporaryFile("wb+")
else:
return tempfile.TemporaryFile(
"w+",
encoding=self.encoding, newline='\n'
)
# Work around http://bugs.python.org/issue23801
# This is taken exactly from Python 3.5's cgi.py module
def read_multi(self, environ, keep_blank_values, strict_parsing):
"""Internal: read a part that is itself multipart."""
ib = self.innerboundary
if not cgi.valid_boundary(ib):
raise ValueError(
'Invalid boundary in multipart form: %r' % (ib,))
self.list = []
if self.qs_on_post:
query = cgi.urllib.parse.parse_qsl(
self.qs_on_post, self.keep_blank_values,
self.strict_parsing,
encoding=self.encoding, errors=self.errors)
for key, value in query:
self.list.append(cgi.MiniFieldStorage(key, value))
klass = self.FieldStorageClass or self.__class__
first_line = self.fp.readline() # bytes
if not isinstance(first_line, bytes):
raise ValueError("%s should return bytes, got %s"
% (self.fp, type(first_line).__name__))
self.bytes_read += len(first_line)
# Ensure that we consume the file until we've hit our innerboundary
while (first_line.strip() != (b"--" + self.innerboundary) and
first_line):
first_line = self.fp.readline()
self.bytes_read += len(first_line)
while True:
parser = cgi.FeedParser()
hdr_text = b""
while True:
data = self.fp.readline()
hdr_text += data
if not data.strip():
break
if not hdr_text:
break
# parser takes strings, not bytes
self.bytes_read += len(hdr_text)
parser.feed(hdr_text.decode(self.encoding, self.errors))
headers = parser.close()
part = klass(self.fp, headers, ib, environ, keep_blank_values,
strict_parsing, self.limit-self.bytes_read,
self.encoding, self.errors)
self.bytes_read += part.bytes_read
self.list.append(part)
if part.done or self.bytes_read >= self.length > 0:
break
self.skip_lines()
else: # pragma no cover
cgi_FieldStorage = _cgi_FieldStorage
else:
from cgi import FieldStorage as cgi_FieldStorage
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