1 files changed, 162 insertions, 0 deletions
diff --git a/third_party/python/voluptuous/voluptuous/util.py b/third_party/python/voluptuous/voluptuous/util.py
new file mode 100644
index 0000000000..e0ff43f850
--- /dev/null
+++ b/third_party/python/voluptuous/voluptuous/util.py
@@ -0,0 +1,162 @@
+import sys
+
+from voluptuous.error import LiteralInvalid, TypeInvalid, Invalid
+from voluptuous.schema_builder import Schema, default_factory, raises
+from voluptuous import validators
+
+__author__ = 'tusharmakkar08'
+
+
+def _fix_str(v):
+    if sys.version_info[0] == 2 and isinstance(v, unicode):
+        s = v
+    else:
+        s = str(v)
+    return s
+
+
+def Lower(v):
+    """Transform a string to lower case.
+
+    >>> s = Schema(Lower)
+    >>> s('HI')
+    'hi'
+    """
+    return _fix_str(v).lower()
+
+
+def Upper(v):
+    """Transform a string to upper case.
+
+    >>> s = Schema(Upper)
+    >>> s('hi')
+    'HI'
+    """
+    return _fix_str(v).upper()
+
+
+def Capitalize(v):
+    """Capitalise a string.
+
+    >>> s = Schema(Capitalize)
+    >>> s('hello world')
+    'Hello world'
+    """
+    return _fix_str(v).capitalize()
+
+
+def Title(v):
+    """Title case a string.
+
+    >>> s = Schema(Title)
+    >>> s('hello world')
+    'Hello World'
+    """
+    return _fix_str(v).title()
+
+
+def Strip(v):
+    """Strip whitespace from a string.
+
+    >>> s = Schema(Strip)
+    >>> s('  hello world  ')
+    'hello world'
+    """
+    return _fix_str(v).strip()
+
+
+class DefaultTo(object):
+    """Sets a value to default_value if none provided.
+
+    >>> s = Schema(DefaultTo(42))
+    >>> s(None)
+    42
+    >>> s = Schema(DefaultTo(list))
+    >>> s(None)
+    []
+    """
+
+    def __init__(self, default_value, msg=None):
+        self.default_value = default_factory(default_value)
+        self.msg = msg
+
+    def __call__(self, v):
+        if v is None:
+            v = self.default_value()
+        return v
+
+    def __repr__(self):
+        return 'DefaultTo(%s)' % (self.default_value(),)
+
+
+class SetTo(object):
+    """Set a value, ignoring any previous value.
+
+    >>> s = Schema(validators.Any(int, SetTo(42)))
+    >>> s(2)
+    2
+    >>> s("foo")
+    42
+    """
+
+    def __init__(self, value):
+        self.value = default_factory(value)
+
+    def __call__(self, v):
+        return self.value()
+
+    def __repr__(self):
+        return 'SetTo(%s)' % (self.value(),)
+
+
+class Set(object):
+    """Convert a list into a set.
+
+    >>> s = Schema(Set())
+    >>> s([]) == set([])
+    True
+    >>> s([1, 2]) == set([1, 2])
+    True
+    >>> with raises(Invalid, regex="^cannot be presented as set: "):
+    ...   s([set([1, 2]), set([3, 4])])
+    """
+
+    def __init__(self, msg=None):
+        self.msg = msg
+
+    def __call__(self, v):
+        try:
+            set_v = set(v)
+        except Exception as e:
+            raise TypeInvalid(
+                self.msg or 'cannot be presented as set: {0}'.format(e))
+        return set_v
+
+    def __repr__(self):
+        return 'Set()'
+
+
+class Literal(object):
+    def __init__(self, lit):
+        self.lit = lit
+
+    def __call__(self, value, msg=None):
+        if self.lit != value:
+            raise LiteralInvalid(
+                msg or '%s not match for %s' % (value, self.lit)
+            )
+        else:
+            return self.lit
+
+    def __str__(self):
+        return str(self.lit)
+
+    def __repr__(self):
+        return repr(self.lit)
+
+
+def u(x):
+    if sys.version_info < (3,):
+        return unicode(x)
+    else:
+        return x