Current File : //usr/lib64/python2.7/site-packages/tornado/util.pyo
�
��L]c @� s� d Z d d l m Z m Z m Z m Z d d l Z d d l Z d d l Z d d l Z d d l
Z
y e Wn e k
r� e
Z n Xd e f d � � YZ d e f d � � YZ e d e d � � s� d � Z e Z e Z n d
� Z e Z e Z d � Z e Z e j d k r d
d Un d d Ud � Z d e f d � � YZ d e f d � � YZ d � Z! d � Z" e j# j$ d � s�e j# j$ d � d k r�e" Z% nL y d d l& m' Z% Wn5 e( k
r�e j# j$ d � d k r�� n e" Z% n Xd � Z) d S( s� Miscellaneous utility functions and classes.
This module is used internally by Tornado. It is not necessarily expected
that the functions and classes defined here will be useful to other
applications, but they are documented here in case they are.
The one public-facing part of this module is the `Configurable` class
and its `~Configurable.configure` method, which becomes a part of the
interface of its subclasses, including `.AsyncHTTPClient`, `.IOLoop`,
and `.Resolver`.
i ( t absolute_importt divisiont print_functiont with_statementNt
ObjectDictc B� s e Z d Z d � Z d � Z RS( sK Makes a dictionary behave like an object, with attribute-style access.
c C� s0 y | | SWn t k
r+ t | � � n Xd S( N( t KeyErrort AttributeError( t selft name( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt __getattr__ s
c C� s | | | <d S( N( ( R R t value( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt __setattr__% s ( t __name__t
__module__t __doc__R R ( ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR s t GzipDecompressorc B� s; e Z d Z d � Z d d � Z e d � � Z d � Z RS( s� Streaming gzip decompressor.
The interface is like that of `zlib.decompressobj` (without some of the
optional arguments, but it understands gzip headers and checksums.
c C� s t j d t j � | _ d S( Ni ( t zlibt
decompressobjt MAX_WBITS( R ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt __init__/ s c C� s | j j | | � S( s� Decompress a chunk, returning newly-available data.
Some data may be buffered for later processing; `flush` must
be called when there is no more input data to ensure that
all data was processed.
If ``max_length`` is given, some input data may be left over
in ``unconsumed_tail``; you must retrieve this value and pass
it back to a future call to `decompress` if it is not empty.
( R t
decompress( R R
t
max_length( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR 5 s c C� s
| j j S( s1 Returns the unconsumed portion left over
( R t unconsumed_tail( R ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR B s c C� s
| j j � S( s� Return any remaining buffered data not yet returned by decompress.
Also checks for errors such as truncated input.
No other methods may be called on this object after `flush`.
( R t flush( R ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR H s N( R R
R R t NoneR t propertyR R ( ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR ) s
t c C� s | S( N( ( t s( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt uW s c C� s
| j d � S( Nt unicode_escape( t decode( R ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR \ s c C� s� t | t � r- t t k r- | j d � } n | j d � d k rR t | d d � S| j d � } t d j | d � d d | d g d � } y t | | d � SWn% t
k
r� t d | d � � n Xd S( s Imports an object by name.
import_object('x') is equivalent to 'import x'.
import_object('x.y.z') is equivalent to 'from x.y import z'.
>>> import tornado.escape
>>> import_object('tornado.escape') is tornado.escape
True
>>> import_object('tornado.escape.utf8') is tornado.escape.utf8
True
>>> import_object('tornado') is tornado
True
>>> import_object('tornado.missing_module')
Traceback (most recent call last):
...
ImportError: No module named missing_module
s utf-8t .i i����s No module named %sN( t
isinstancet unicode_typet strt encodet countt
__import__R t splitt joint getattrR t ImportError( R t partst obj( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt
import_objectd s ,
i s�
def raise_exc_info(exc_info):
raise exc_info[1].with_traceback(exc_info[2])
def exec_in(code, glob, loc=None):
if isinstance(code, str):
code = compile(code, '<string>', 'exec', dont_inherit=True)
exec(code, glob, loc)
sh
def raise_exc_info(exc_info):
raise exc_info[0], exc_info[1], exc_info[2]
def exec_in(code, glob, loc=None):
if isinstance(code, basestring):
# exec(string) inherits the caller's future imports; compile
# the string first to prevent that.
code = compile(code, '<string>', 'exec', dont_inherit=True)
exec code in glob, loc
c C� s2 t | d � r | j S| j r* | j d Sd Sd S( sL Provides the errno from an Exception object.
There are cases that the errno attribute was not set so we pull
the errno out of the args but if someone instantiates an Exception
without any args you will get a tuple error. So this function
abstracts all that behavior to give you a safe way to get the
errno.
t errnoi N( t hasattrR- t argsR ( t e( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt errno_from_exception� s
t Configurablec B� s� e Z d Z d Z d Z d � Z e d � � Z e d � � Z d � Z
e d � � Z e d � � Z e d � � Z
e d � � Z RS(
s� Base class for configurable interfaces.
A configurable interface is an (abstract) class whose constructor
acts as a factory function for one of its implementation subclasses.
The implementation subclass as well as optional keyword arguments to
its initializer can be set globally at runtime with `configure`.
By using the constructor as the factory method, the interface
looks like a normal class, `isinstance` works as usual, etc. This
pattern is most useful when the choice of implementation is likely
to be a global decision (e.g. when `~select.epoll` is available,
always use it instead of `~select.select`), or when a
previously-monolithic class has been split into specialized
subclasses.
Configurable subclasses must define the class methods
`configurable_base` and `configurable_default`, and use the instance
method `initialize` instead of ``__init__``.
c O� s� | j � } i } | | k rI | j � } | j rO | j | j � qO n | } | j | � t t | � j | � } | j | | � | S( N( t configurable_baset configured_classt _Configurable__impl_kwargst updatet superR2 t __new__t
initialize( t clsR/ t kwargst baset init_kwargst implt instance( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR8 � s
c C� s
t � � d S( s� Returns the base class of a configurable hierarchy.
This will normally return the class in which it is defined.
(which is *not* necessarily the same as the cls classmethod parameter).
N( t NotImplementedError( R: ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR3 � s c C� s
t � � d S( sB Returns the implementation class to be used if none is configured.N( R@ ( R: ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt configurable_default� s c C� s d S( s� Initialize a `Configurable` subclass instance.
Configurable classes should use `initialize` instead of ``__init__``.
.. versionchanged:: 4.2
Now accepts positional arguments in addition to keyword arguments.
N( ( R ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR9 � s c K� su | j � } t | t t f � r0 t | � } n | d k r_ t | | � r_ t d | � � n | | _ | | _ d S( s� Sets the class to use when the base class is instantiated.
Keyword arguments will be saved and added to the arguments passed
to the constructor. This can be used to set global defaults for
some parameters.
s Invalid subclass of %sN(
R3 R R! t bytesR, R t
issubclasst
ValueErrort _Configurable__impl_classR5 ( R: R> R; R< ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt configure� s c C� s4 | j � } | j d k r- | j � | _ n | j S( s' Returns the currently configured class.N( R3 RE R RA ( R: R< ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR4 s c C� s | j � } | j | j f S( N( R3 RE R5 ( R: R< ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt _save_configuration s c C� s* | j � } | d | _ | d | _ d S( Ni i ( R3 RE R5 ( R: t savedR< ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt _restore_configuration s
N( R R
R R RE R5 R8 t classmethodR3 RA R9 RF R4 RG RI ( ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR2 � s t ArgReplacerc B� s, e Z d Z d � Z d d � Z d � Z RS( s� Replaces one value in an ``args, kwargs`` pair.
Inspects the function signature to find an argument by name
whether it is passed by position or keyword. For use in decorators
and similar wrappers.
c C� sO | | _ y% t j | � j j | j � | _ Wn t k
rJ d | _ n Xd S( N( R t inspectt
getargspecR/ t indext arg_posRD R ( R t funcR ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyR s
%
c C� sF | j d k r/ t | � | j k r/ | | j S| j | j | � Sd S( s� Returns the old value of the named argument without replacing it.
Returns ``default`` if the argument is not present.
N( RO R t lent getR ( R R/ R; t default( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt
get_old_value$ s $ c C� sy | j d k rM t | � | j k rM | | j } t | � } | | | j <n | j | j � } | | | j <| | | f S( s� Replace the named argument in ``args, kwargs`` with ``new_value``.
Returns ``(old_value, args, kwargs)``. The returned ``args`` and
``kwargs`` objects may not be the same as the input objects, or
the input objects may be mutated.
If the named argument was not found, ``new_value`` will be added
to ``kwargs`` and None will be returned as ``old_value``.
N( RO R RQ t listRR R ( R t new_valueR/ R; t old_value( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt replace. s
$
N( R R
R R R RT RX ( ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyRK s
c C� s+ | j | j | j d d d t d � S( s< Equivalent to td.total_seconds() (introduced in python 2.7).i i i
i i@B i@B ( t microsecondst secondst dayst float( t td( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt timedelta_to_secondsD s c C� s� t j d | � } t j d | � } x4 t t | � � D] } | | | | d A| | <q7 Wt | d � rt | j � S| j � Sd S( sQ Websocket masking function.
`mask` is a `bytes` object of length 4; `data` is a `bytes` object of any length.
Returns a `bytes` object of the same length as `data` with the mask applied
as specified in section 5.3 of RFC 6455.
This pure-python implementation may be replaced by an optimized version when available.
t Bi t tobytesN( t arrayt xrangeRQ R. R` t tostring( t maskt datat unmaskedt i( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt _websocket_mask_pythonI s
t TORNADO_NO_EXTENSIONt TORNADO_EXTENSIONt 0( t websocket_maskt 1c C� s d d l } | j � S( Ni ( t doctestt DocTestSuite( Rn ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt doctestsl s ( i (* R t
__future__R R R R Ra RL t ost sysR Rb t NameErrort ranget dictR t objectR R t typeR R" R! t basestring_typet unicodet
basestringR, RB t
bytes_typet version_infoR1 R2 RK R^ Rh t environRR t _websocket_maskt tornado.speedupsRl R) Rp ( ( ( s2 /usr/lib64/python2.7/site-packages/tornado/util.pyt <module> sN "
- " c/
Mini Shell