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benchmarks	-	Open
schemas	-	Open
tests	-	Open
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cli.py	2.26 MB	View DL Edit
compat.py	1.32 MB	View DL Edit
exceptions.py	10.21 MB	View DL Edit
validators.py	28.71 MB	View DL Edit
_format.py	11.42 MB	View DL Edit
_legacy_validators.py	4.48 MB	View DL Edit
_reflect.py	4.91 MB	View DL Edit
_types.py	4.38 MB	View DL Edit
_utils.py	5.05 MB	View DL Edit
_validators.py	11.43 MB	View DL Edit
__init__.py	934 B	View DL Edit
__main__.py	39 B	View DL Edit

Edit file: /usr/lib/python3.9/site-packages/jsonschema/_format.py

import datetime
import re
import socket
import struct

from jsonschema.compat import str_types
from jsonschema.exceptions import FormatError

class FormatChecker(object):
    """
    A ``format`` property checker.

JSON Schema does not mandate that the ``format`` property actually do any
    validation. If validation is desired however, instances of this class can
    be hooked into validators to enable format validation.

`FormatChecker` objects always return ``True`` when asked about
    formats that they do not know how to validate.

To check a custom format using a function that takes an instance and
    returns a ``bool``, use the `FormatChecker.checks` or
    `FormatChecker.cls_checks` decorators.

Arguments:

formats (~collections.Iterable):

The known formats to validate. This argument can be used to
            limit which formats will be used during validation.
    """

checkers = {}

def __init__(self, formats=None):
        if formats is None:
            self.checkers = self.checkers.copy()
        else:
            self.checkers = dict((k, self.checkers[k]) for k in formats)

def __repr__(self):
        return "<FormatChecker checkers={}>".format(sorted(self.checkers))

def checks(self, format, raises=()):
        """
        Register a decorated function as validating a new format.

Arguments:

format (str):

The format that the decorated function will check.

raises (Exception):

The exception(s) raised by the decorated function when an
                invalid instance is found.

The exception object will be accessible as the
                `jsonschema.exceptions.ValidationError.cause` attribute of the
                resulting validation error.
        """

def _checks(func):
            self.checkers[format] = (func, raises)
            return func
        return _checks

cls_checks = classmethod(checks)

def check(self, instance, format):
        """
        Check whether the instance conforms to the given format.

Arguments:

instance (*any primitive type*, i.e. str, number, bool):

The instance to check

format (str):

The format that instance should conform to

Raises:

FormatError: if the instance does not conform to ``format``
        """

if format not in self.checkers:
            return

func, raises = self.checkers[format]
        result, cause = None, None
        try:
            result = func(instance)
        except raises as e:
            cause = e
        if not result:
            raise FormatError(
                "%r is not a %r" % (instance, format), cause=cause,
            )

def conforms(self, instance, format):
        """
        Check whether the instance conforms to the given format.

Arguments:

instance (*any primitive type*, i.e. str, number, bool):

The instance to check

format (str):

The format that instance should conform to

Returns:

bool: whether it conformed
        """

try:
            self.check(instance, format)
        except FormatError:
            return False
        else:
            return True

draft3_format_checker = FormatChecker()
draft4_format_checker = FormatChecker()
draft6_format_checker = FormatChecker()
draft7_format_checker = FormatChecker()

_draft_checkers = dict(
    draft3=draft3_format_checker,
    draft4=draft4_format_checker,
    draft6=draft6_format_checker,
    draft7=draft7_format_checker,
)

def _checks_drafts(
    name=None,
    draft3=None,
    draft4=None,
    draft6=None,
    draft7=None,
    raises=(),
):
    draft3 = draft3 or name
    draft4 = draft4 or name
    draft6 = draft6 or name
    draft7 = draft7 or name

def wrap(func):
        if draft3:
            func = _draft_checkers["draft3"].checks(draft3, raises)(func)
        if draft4:
            func = _draft_checkers["draft4"].checks(draft4, raises)(func)
        if draft6:
            func = _draft_checkers["draft6"].checks(draft6, raises)(func)
        if draft7:
            func = _draft_checkers["draft7"].checks(draft7, raises)(func)

# Oy. This is bad global state, but relied upon for now, until
        # deprecation. See https://github.com/Julian/jsonschema/issues/519
        # and test_format_checkers_come_with_defaults
        FormatChecker.cls_checks(draft7 or draft6 or draft4 or draft3, raises)(
            func,
        )
        return func
    return wrap

@_checks_drafts(name="idn-email")
@_checks_drafts(name="email")
def is_email(instance):
    if not isinstance(instance, str_types):
        return True
    return "@" in instance

_ipv4_re = re.compile(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$")

@_checks_drafts(
    draft3="ip-address", draft4="ipv4", draft6="ipv4", draft7="ipv4",
)
def is_ipv4(instance):
    if not isinstance(instance, str_types):
        return True
    if not _ipv4_re.match(instance):
        return False
    return all(0 <= int(component) <= 255 for component in instance.split("."))

if hasattr(socket, "inet_pton"):
    # FIXME: Really this only should raise struct.error, but see the sadness
    #        that is https://twistedmatrix.com/trac/ticket/9409
    @_checks_drafts(
        name="ipv6", raises=(socket.error, struct.error, ValueError),
    )
    def is_ipv6(instance):
        if not isinstance(instance, str_types):
            return True
        return socket.inet_pton(socket.AF_INET6, instance)

_host_name_re = re.compile(r"^[A-Za-z0-9][A-Za-z0-9\.\-]{1,255}$")

@_checks_drafts(
    draft3="host-name",
    draft4="hostname",
    draft6="hostname",
    draft7="hostname",
)
def is_host_name(instance):
    if not isinstance(instance, str_types):
        return True
    if not _host_name_re.match(instance):
        return False
    components = instance.split(".")
    for component in components:
        if len(component) > 63:
            return False
    return True

try:
    # The built-in `idna` codec only implements RFC 3890, so we go elsewhere.
    import idna
except ImportError:
    pass
else:
    @_checks_drafts(draft7="idn-hostname", raises=idna.IDNAError)
    def is_idn_host_name(instance):
        if not isinstance(instance, str_types):
            return True
        idna.encode(instance)
        return True

try:
    import rfc3987
except ImportError:
    try:
        from rfc3986_validator import validate_rfc3986
    except ImportError:
        pass
    else:
        @_checks_drafts(name="uri")
        def is_uri(instance):
            if not isinstance(instance, str_types):
                return True
            return validate_rfc3986(instance, rule="URI")

@_checks_drafts(
            draft6="uri-reference",
            draft7="uri-reference",
            raises=ValueError,
        )
        def is_uri_reference(instance):
            if not isinstance(instance, str_types):
                return True
            return validate_rfc3986(instance, rule="URI_reference")

else:
    @_checks_drafts(draft7="iri", raises=ValueError)
    def is_iri(instance):
        if not isinstance(instance, str_types):
            return True
        return rfc3987.parse(instance, rule="IRI")

@_checks_drafts(draft7="iri-reference", raises=ValueError)
    def is_iri_reference(instance):
        if not isinstance(instance, str_types):
            return True
        return rfc3987.parse(instance, rule="IRI_reference")

@_checks_drafts(name="uri", raises=ValueError)
    def is_uri(instance):
        if not isinstance(instance, str_types):
            return True
        return rfc3987.parse(instance, rule="URI")

@_checks_drafts(
        draft6="uri-reference",
        draft7="uri-reference",
        raises=ValueError,
    )
    def is_uri_reference(instance):
        if not isinstance(instance, str_types):
            return True
        return rfc3987.parse(instance, rule="URI_reference")

try:
    from strict_rfc3339 import validate_rfc3339
except ImportError:
    try:
        from rfc3339_validator import validate_rfc3339
    except ImportError:
        validate_rfc3339 = None

if validate_rfc3339:
    @_checks_drafts(name="date-time")
    def is_datetime(instance):
        if not isinstance(instance, str_types):
            return True
        return validate_rfc3339(instance)

@_checks_drafts(draft7="time")
    def is_time(instance):
        if not isinstance(instance, str_types):
            return True
        return is_datetime("1970-01-01T" + instance)

@_checks_drafts(name="regex", raises=re.error)
def is_regex(instance):
    if not isinstance(instance, str_types):
        return True
    return re.compile(instance)

@_checks_drafts(draft3="date", draft7="date", raises=ValueError)
def is_date(instance):
    if not isinstance(instance, str_types):
        return True
    return datetime.datetime.strptime(instance, "%Y-%m-%d")

@_checks_drafts(draft3="time", raises=ValueError)
def is_draft3_time(instance):
    if not isinstance(instance, str_types):
        return True
    return datetime.datetime.strptime(instance, "%H:%M:%S")

try:
    import webcolors
except ImportError:
    pass
else:
    def is_css_color_code(instance):
        return webcolors.normalize_hex(instance)

@_checks_drafts(draft3="color", raises=(ValueError, TypeError))
    def is_css21_color(instance):
        if (
            not isinstance(instance, str_types) or
            instance.lower() in webcolors.css21_names_to_hex
        ):
            return True
        return is_css_color_code(instance)

def is_css3_color(instance):
        if instance.lower() in webcolors.css3_names_to_hex:
            return True
        return is_css_color_code(instance)

try:
    import jsonpointer
except ImportError:
    pass
else:
    @_checks_drafts(
        draft6="json-pointer",
        draft7="json-pointer",
        raises=jsonpointer.JsonPointerException,
    )
    def is_json_pointer(instance):
        if not isinstance(instance, str_types):
            return True
        return jsonpointer.JsonPointer(instance)

# TODO: I don't want to maintain this, so it
    #       needs to go either into jsonpointer (pending
    #       https://github.com/stefankoegl/python-json-pointer/issues/34) or
    #       into a new external library.
    @_checks_drafts(
        draft7="relative-json-pointer",
        raises=jsonpointer.JsonPointerException,
    )
    def is_relative_json_pointer(instance):
        # Definition taken from:
        # https://tools.ietf.org/html/draft-handrews-relative-json-pointer-01#section-3
        if not isinstance(instance, str_types):
            return True
        non_negative_integer, rest = [], ""
        for i, character in enumerate(instance):
            if character.isdigit():
                non_negative_integer.append(character)
                continue

if not non_negative_integer:
                return False

rest = instance[i:]
            break
        return (rest == "#") or jsonpointer.JsonPointer(rest)

try:
    import uritemplate.exceptions
except ImportError:
    pass
else:
    @_checks_drafts(
        draft6="uri-template",
        draft7="uri-template",
        raises=uritemplate.exceptions.InvalidTemplate,
    )
    def is_uri_template(
        instance,
        template_validator=uritemplate.Validator().force_balanced_braces(),
    ):
        template = uritemplate.URITemplate(instance)
        return template_validator.validate(template)

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