1 files changed, 75 insertions, 0 deletions
diff --git a/venv/lib/python3.9/site-packages/validators/email.py b/venv/lib/python3.9/site-packages/validators/email.py
new file mode 100644
index 00000000..229c8e46
--- /dev/null
+++ b/venv/lib/python3.9/site-packages/validators/email.py
@@ -0,0 +1,75 @@
+import re
+
+from .utils import validator
+
+user_regex = re.compile(
+    # dot-atom
+    r"(^[-!#$%&'*+/=?^_`{}|~0-9A-Z]+"
+    r"(\.[-!#$%&'*+/=?^_`{}|~0-9A-Z]+)*$"
+    # quoted-string
+    r'|^"([\001-\010\013\014\016-\037!#-\[\]-\177]|'
+    r"""\\[\001-\011\013\014\016-\177])*"$)""",
+    re.IGNORECASE
+)
+domain_regex = re.compile(
+    # domain
+    r'(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+'
+    r'(?:[A-Z]{2,6}\.?|[A-Z0-9-]{2,}\.?$)'
+    # literal form, ipv4 address (SMTP 4.1.3)
+    r'|^\[(25[0-5]|2[0-4]\d|[0-1]?\d?\d)'
+    r'(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}\]$',
+    re.IGNORECASE)
+domain_whitelist = ['localhost']
+
+
+@validator
+def email(value, whitelist=None):
+    """
+    Validate an email address.
+
+    This validator is based on `Django's email validator`_. Returns
+    ``True`` on success and :class:`~validators.utils.ValidationFailure`
+    when validation fails.
+
+    Examples::
+
+        >>> email('someone@example.com')
+        True
+
+        >>> email('bogus@@')
+        ValidationFailure(func=email, ...)
+
+    .. _Django's email validator:
+       https://github.com/django/django/blob/master/django/core/validators.py
+
+    .. versionadded:: 0.1
+
+    :param value: value to validate
+    :param whitelist: domain names to whitelist
+
+    :copyright: (c) Django Software Foundation and individual contributors.
+    :license: BSD
+    """
+
+    if whitelist is None:
+        whitelist = domain_whitelist
+
+    if not value or '@' not in value:
+        return False
+
+    user_part, domain_part = value.rsplit('@', 1)
+
+    if not user_regex.match(user_part):
+        return False
+
+    if len(user_part.encode("utf-8")) > 64:
+        return False
+
+    if domain_part not in whitelist and not domain_regex.match(domain_part):
+        # Try for possible IDN domain-part
+        try:
+            domain_part = domain_part.encode('idna').decode('ascii')
+            return domain_regex.match(domain_part)
+        except UnicodeError:
+            return False
+    return True