summaryrefslogtreecommitdiff
path: root/.emacs.d.back/.python-environments/default/lib/python3.7/site-packages/pip/_vendor/html5lib/_utils.py
diff options
context:
space:
mode:
Diffstat (limited to '.emacs.d.back/.python-environments/default/lib/python3.7/site-packages/pip/_vendor/html5lib/_utils.py')
-rw-r--r--.emacs.d.back/.python-environments/default/lib/python3.7/site-packages/pip/_vendor/html5lib/_utils.py124
1 files changed, 124 insertions, 0 deletions
diff --git a/.emacs.d.back/.python-environments/default/lib/python3.7/site-packages/pip/_vendor/html5lib/_utils.py b/.emacs.d.back/.python-environments/default/lib/python3.7/site-packages/pip/_vendor/html5lib/_utils.py
new file mode 100644
index 00000000..0703afb3
--- /dev/null
+++ b/.emacs.d.back/.python-environments/default/lib/python3.7/site-packages/pip/_vendor/html5lib/_utils.py
@@ -0,0 +1,124 @@
+from __future__ import absolute_import, division, unicode_literals
+
+from types import ModuleType
+
+from pip._vendor.six import text_type
+
+try:
+ import xml.etree.cElementTree as default_etree
+except ImportError:
+ import xml.etree.ElementTree as default_etree
+
+
+__all__ = ["default_etree", "MethodDispatcher", "isSurrogatePair",
+ "surrogatePairToCodepoint", "moduleFactoryFactory",
+ "supports_lone_surrogates"]
+
+
+# Platforms not supporting lone surrogates (\uD800-\uDFFF) should be
+# caught by the below test. In general this would be any platform
+# using UTF-16 as its encoding of unicode strings, such as
+# Jython. This is because UTF-16 itself is based on the use of such
+# surrogates, and there is no mechanism to further escape such
+# escapes.
+try:
+ _x = eval('"\\uD800"') # pylint:disable=eval-used
+ if not isinstance(_x, text_type):
+ # We need this with u"" because of http://bugs.jython.org/issue2039
+ _x = eval('u"\\uD800"') # pylint:disable=eval-used
+ assert isinstance(_x, text_type)
+except: # pylint:disable=bare-except
+ supports_lone_surrogates = False
+else:
+ supports_lone_surrogates = True
+
+
+class MethodDispatcher(dict):
+ """Dict with 2 special properties:
+
+ On initiation, keys that are lists, sets or tuples are converted to
+ multiple keys so accessing any one of the items in the original
+ list-like object returns the matching value
+
+ md = MethodDispatcher({("foo", "bar"):"baz"})
+ md["foo"] == "baz"
+
+ A default value which can be set through the default attribute.
+ """
+
+ def __init__(self, items=()):
+ # Using _dictEntries instead of directly assigning to self is about
+ # twice as fast. Please do careful performance testing before changing
+ # anything here.
+ _dictEntries = []
+ for name, value in items:
+ if isinstance(name, (list, tuple, frozenset, set)):
+ for item in name:
+ _dictEntries.append((item, value))
+ else:
+ _dictEntries.append((name, value))
+ dict.__init__(self, _dictEntries)
+ assert len(self) == len(_dictEntries)
+ self.default = None
+
+ def __getitem__(self, key):
+ return dict.get(self, key, self.default)
+
+
+# Some utility functions to deal with weirdness around UCS2 vs UCS4
+# python builds
+
+def isSurrogatePair(data):
+ return (len(data) == 2 and
+ ord(data[0]) >= 0xD800 and ord(data[0]) <= 0xDBFF and
+ ord(data[1]) >= 0xDC00 and ord(data[1]) <= 0xDFFF)
+
+
+def surrogatePairToCodepoint(data):
+ char_val = (0x10000 + (ord(data[0]) - 0xD800) * 0x400 +
+ (ord(data[1]) - 0xDC00))
+ return char_val
+
+# Module Factory Factory (no, this isn't Java, I know)
+# Here to stop this being duplicated all over the place.
+
+
+def moduleFactoryFactory(factory):
+ moduleCache = {}
+
+ def moduleFactory(baseModule, *args, **kwargs):
+ if isinstance(ModuleType.__name__, type("")):
+ name = "_%s_factory" % baseModule.__name__
+ else:
+ name = b"_%s_factory" % baseModule.__name__
+
+ kwargs_tuple = tuple(kwargs.items())
+
+ try:
+ return moduleCache[name][args][kwargs_tuple]
+ except KeyError:
+ mod = ModuleType(name)
+ objs = factory(baseModule, *args, **kwargs)
+ mod.__dict__.update(objs)
+ if "name" not in moduleCache:
+ moduleCache[name] = {}
+ if "args" not in moduleCache[name]:
+ moduleCache[name][args] = {}
+ if "kwargs" not in moduleCache[name][args]:
+ moduleCache[name][args][kwargs_tuple] = {}
+ moduleCache[name][args][kwargs_tuple] = mod
+ return mod
+
+ return moduleFactory
+
+
+def memoize(func):
+ cache = {}
+
+ def wrapped(*args, **kwargs):
+ key = (tuple(args), tuple(kwargs.items()))
+ if key not in cache:
+ cache[key] = func(*args, **kwargs)
+ return cache[key]
+
+ return wrapped