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편집 파일: base64.cpython-34.pyc
� e f�N � @ sz d Z d d l Z d d l Z d d l Z d d d d d d d d d d d d d d d d d d g Z e e f Z d d � Z d d d � Z d d d d � Z d d � Z d d � Z e j d d � Z e j d d � Z d d � Z d d � Z d Z d a d a d! d � Z d d d" d � Z d# d � Z d d$ d � Z d a d a d% Z d& Z d d d d' d( � Z d) d d* d d+ d d, d d- d � Z d) d d, d d. d/ d0 d � Z d1 Z d a! d a" d a# d d2 d � Z$ d3 d � Z% d4 Z& e& d5 d6 Z' d7 d � Z( d8 d � Z) d9 d: � Z* d; d � Z+ d< d= � Z, d> d � Z- d? d@ � Z. dA dB � Z/ dC dD � Z0 e1 dE k rve/ � n d S)FzDBase16, Base32, Base64 (RFC 3548), Base85 and Ascii85 data encodings� N�encode�decode� encodebytes� decodebytes� b64encode� b64decode� b32encode� b32decode� b16encode� b16decode� b85encode� b85decode� a85encode� a85decode�standard_b64encode�standard_b64decode�urlsafe_b64encode�urlsafe_b64decodec C s� t | t � rD y | j d � SWqD t k r@ t d � � YqD Xn t | t � rW | Sy t | � j � SWn+ t k r� t d | j j � d � Yn Xd S)N�asciiz4string argument should contain only ASCII charactersz>argument should be a bytes-like object or ASCII string, not %r) � isinstance�strr �UnicodeEncodeError� ValueError� bytes_types� memoryview�tobytes� TypeError� __class__�__name__)�s� r �+/opt/alt/python34/lib64/python3.4/base64.py�_bytes_from_decode_data" s r" c C sf t j | � d d � } | d k rb t | � d k sI t t | � � � | j t j d | � � S| S)aS Encode a byte string using Base64. s is the byte string to encode. Optional altchars must be a byte string of length 2 which specifies an alternative alphabet for the '+' and '/' characters. This allows an application to e.g. generate url or filesystem safe Base64 strings. The encoded byte string is returned. N� � s +/���)�binascii� b2a_base64�len�AssertionError�repr� translate�bytes� maketrans)r �altchars�encodedr r r! r 3 s $Fc C s� t | � } | d k rf t | � } t | � d k sH t t | � � � | j t j | d � � } n | r� t j d | � r� t j d � � n t j | � S)a Decode a Base64 encoded byte string. s is the byte string to decode. Optional altchars must be a string of length 2 which specifies the alternative alphabet used instead of the '+' and '/' characters. The decoded string is returned. A binascii.Error is raised if s is incorrectly padded. If validate is False (the default), non-base64-alphabet characters are discarded prior to the padding check. If validate is True, non-base64-alphabet characters in the input result in a binascii.Error. Nr$ s +/s ^[A-Za-z0-9+/]*={0,2}$zNon-base64 digit found) r" r( r) r* r+ r, r- �re�matchr& �Error� a2b_base64)r r. Zvalidater r r! r E s $ c C s t | � S)z�Encode a byte string using the standard Base64 alphabet. s is the byte string to encode. The encoded byte string is returned. )r )r r r r! r ] s c C s t | � S)a Decode a byte string encoded with the standard Base64 alphabet. s is the byte string to decode. The decoded byte string is returned. binascii.Error is raised if the input is incorrectly padded or if there are non-alphabet characters present in the input. )r )r r r r! r d s s +/s -_c C s t | � j t � S)z�Encode a byte string using a url-safe Base64 alphabet. s is the byte string to encode. The encoded byte string is returned. The alphabet uses '-' instead of '+' and '_' instead of '/'. )r r+ �_urlsafe_encode_translation)r r r r! r r s c C s% t | � } | j t � } t | � S)aX Decode a byte string encoded with the standard Base64 alphabet. s is the byte string to decode. The decoded byte string is returned. binascii.Error is raised if the input is incorrectly padded or if there are non-alphabet characters present in the input. The alphabet uses '-' instead of '+' and '_' instead of '/'. )r" r+ �_urlsafe_decode_translationr )r r r r! r { s s ABCDEFGHIJKLMNOPQRSTUVWXYZ234567c s� t d k rA d d � t D� � � f d d � � D� a d � n t | t � se t | � j � } n t | � d } | r� | t d | � } n t � } t j } t } x{ t d t | � d � D]a } | | | | d � d � } | | | d ?| | d ?d @| | d ?d @| | d @7} q� W| d k rGd | d d � <n] | d k rfd | d d � <n> | d k r�d | d d � <n | d k r�d | d d � <n t | � S)zrEncode a byte string using Base32. s is the byte string to encode. The encoded byte string is returned. Nc S s g | ] } t | f � � q Sr )r, )�.0�ir r r! � <listcomp>� s z b32encode.<locals>.<listcomp>c s' g | ] } � D] } | | � q q Sr r )r6 �a�b)�b32tabr r! r8 � s � r �big� � i� � r# s ======� r$ s ====� � s ===� =i����������r% ) �_b32tab2� _b32alphabetr r r r r( r, � bytearray�int� from_bytes�range)r Zleftoverr/ rK Zb32tab2r7 �cr )r; r! r � s4 + c C s� t d k r( d d � t t � D� a n t | � } t | � d rV t j d � � n | d k r� t | � } t | � d k s� t t | � � � | j t j d d | � � } n | r� | j � } n t | � } | j d � } | t | � } t � } t } x� t d t | � d � D]� } | | | d � } d } y' x | D] } | d >| | } qFWWn$ t k r�t j d � d � Yn X| | j d d � 7} q W| r�| d | K} | j d d � } | d k r�| d d � | d d � <q�| d k r | d d � | d d � <q�| d k rE| d d � | d d � <q�| d k rn| d d � | d d � <q�t j d � � n t | � S)a] Decode a Base32 encoded byte string. s is the byte string to decode. Optional casefold is a flag specifying whether a lowercase alphabet is acceptable as input. For security purposes, the default is False. RFC 3548 allows for optional mapping of the digit 0 (zero) to the letter O (oh), and for optional mapping of the digit 1 (one) to either the letter I (eye) or letter L (el). The optional argument map01 when not None, specifies which letter the digit 1 should be mapped to (when map01 is not None, the digit 0 is always mapped to the letter O). For security purposes the default is None, so that 0 and 1 are not allowed in the input. The decoded byte string is returned. binascii.Error is raised if the input is incorrectly padded or if there are non-alphabet characters present in the input. Nc S s i | ] \ } } | | � q Sr r )r6 �k�vr r r! � <dictcomp>� s z b32decode.<locals>.<dictcomp>� zIncorrect paddingr# s 01� OrD r r< zNon-base32 digit foundr= rC r$ rB rA r% ������rS rF rS rE rS )�_b32rev� enumeraterH r" r( r& r2 r) r* r+ r, r- �upper�rstriprI rL �KeyError�to_bytes) r �casefoldZmap01�lZpadchars�decodedZb32revr7 Zquanta�accrM �lastr r r! r � sL $" c C s t j | � j � S)zrEncode a byte string using Base16. s is the byte string to encode. The encoded byte string is returned. )r& ZhexlifyrW )r r r r! r s c C sR t | � } | r! | j � } n t j d | � rE t j d � � n t j | � S)a� Decode a Base16 encoded byte string. s is the byte string to decode. Optional casefold is a flag specifying whether a lowercase alphabet is acceptable as input. For security purposes, the default is False. The decoded byte string is returned. binascii.Error is raised if s were incorrectly padded or if there are non-alphabet characters present in the string. s [^0-9A-F]zNon-base16 digit found)r" rW r0 �searchr& r2 Z unhexlify)r r[ r r r! r s s <~s ~>c s� t | t � s$ t | � j � } n t | � d } | rL | d | } n t j d t | � d � j | � } � � � � f d d � | D� } | r� | r� | d d k r� � d d | d <n | d d | � | d <n d j | � S)NrB s z!%dIc se g | ][ } � r | r d n? � r7 | d k r7 d n' � | d � | d d � | d � q S)� zi � yi�^ �U i9 r )r6 Zword)�chars�chars2�foldnuls� foldspacesr r! r8 0 s z _85encode.<locals>.<listcomp>r# ra r r< � r% r% r% r% ) r r r r r( �struct�StructZunpack�join) r: rd re �padrf rg �paddingZwords�chunksr )rd re rf rg r! � _85encode& s & ro rg �wrapcolrl �adobec s t d k r> d d � t d d � D� a d d � t D� a n t | t t | d | � � | rl t � � n � r t | r� d n d � � � � � f d d � t d t � � � � D� } | r� t | d � d � k r� | j d � q� n d j | � � n | r� t 7� n � S)a Encode a byte string using Ascii85. b is the byte string to encode. The encoded byte string is returned. foldspaces is an optional flag that uses the special short sequence 'y' instead of 4 consecutive spaces (ASCII 0x20) as supported by 'btoa'. This feature is not supported by the "standard" Adobe encoding. wrapcol controls whether the output should have newline ('\n') characters added to it. If this is non-zero, each output line will be at most this many characters long. pad controls whether the input string is padded to a multiple of 4 before encoding. Note that the btoa implementation always pads. adobe controls whether the encoded byte sequence is framed with <~ and ~>, which is used by the Adobe implementation. Nc S s g | ] } t | f � � q Sr )r, )r6 r7 r r r! r8 U s z a85encode.<locals>.<listcomp>�! �v c S s' g | ] } t D] } | | � q q Sr )� _a85chars)r6 r9 r: r r r! r8 V s Tr$ r# c s$ g | ] } � | | � � � q Sr r )r6 r7 )�resultrp r r! r8 ^ s r rh s r% ) rt rL � _a85chars2ro � _A85START�maxr( �appendrk �_A85END)r: rg rp rl rq rn r )ru rp r! r > s" � ignorecharss c C s t | � } | r^ | j t � o- | j t � sK t d j t t � � � n | d d � } n t j d � j } g } | j } g } | j } | j } x?| d D]3} d | k o� d k n rQ| | � t | � d k r�d } x | D] } d | | d } q� Wy | | | � � Wn$ t j k rCt d � d � Yn X| � q�q� | d k r| rrt d � � n | d � q� | r�| d k r�| r�t d � � n | d � q� | | k r�q� q� t d | � � q� Wd j | � } d t | � } | r| d | � } n | S)ac Decode an Ascii85 encoded byte string. s is the byte string to decode. foldspaces is a flag that specifies whether the 'y' short sequence should be accepted as shorthand for 4 consecutive spaces (ASCII 0x20). This feature is not supported by the "standard" Adobe encoding. adobe controls whether the input sequence is in Adobe Ascii85 format (i.e. is framed with <~ and ~>). ignorechars should be a byte string containing characters to ignore from the input. This should only contain whitespace characters, and by default contains all whitespace characters in ASCII. zAAscii85 encoded byte sequences must be bracketed by {!r} and {!r}r$ z!I� urB � !r r< rc rr zAscii85 overflowNra zz inside Ascii85 5-tuples rb zy inside Ascii85 5-tuples zNon-Ascii85 digit found: %crh rT s uuuurr �u �z �y )r" � startswithrw �endswithrz r �formatri rj �packry �clearr( �errorrk )r: rg rq r{ �packIr] Zdecoded_append�currZ curr_appendZ curr_clear�xr^ ru rm r r r! r i sP sU 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~c C sH t d k r5 d d � t D� a d d � t D� a n t | t t | � S)z�Encode an ASCII-encoded byte array in base85 format. If pad is true, the input is padded with "\0" so its length is a multiple of 4 characters before encoding. Nc S s g | ] } t | f � � q Sr )r, )r6 r7 r r r! r8 � s z b85encode.<locals>.<listcomp>c S s' g | ] } t D] } | | � q q Sr )� _b85chars)r6 r9 r: r r r! r8 � s )r� � _b85alphabet� _b85chars2ro )r: rl r r r! r � s c C s� t d k rC d g d a x' t t � D] \ } } | t | <q& Wn t | � } t | � d } | d | } g } t j d � j } xt d t | � d � D]� } | | | d � } d } y' x | D] } | d t | } q� WWn\ t k rDxD t | � D]6 \ } } t | d k rt d | | � d � qqW� Yn Xy | j | | � � Wq� t j k r�t d | � d � Yq� Xq� Wd j | � } | r�| d | � } n | S) z Decode base85-encoded byte arrayN� r< � ~z!Ir rc z#bad base85 character at position %dz+base85 overflow in hunk starting at byte %drh )�_b85decrV r� r" r( ri rj r� rL r r ry r� rk ) r: r7 rM rm �outr� �chunkr^ �jru r r r! r � s< �L rB rC c C s� x | j t � } | s Pn xC t | � t k ra | j t t | � � } | sT Pn | | 7} q Wt j | � } | j | � q Wd S)z1Encode a file; input and output are binary files.N)�read� MAXBINSIZEr( r& r' �write)�input�outputr �ns�liner r r! r � s c C s= x6 | j � } | s Pn t j | � } | j | � q Wd S)z1Decode a file; input and output are binary files.N)�readliner& r3 r� )r� r� r� r r r r! r � s c C s� y t | � } WnD t k rV } z$ d | j j } t | � | � WYd d } ~ Xn X| j d k r� d | j | j j f } t | � � n | j d k r� d | j | j j f } t | � � n d S) Nz"expected bytes-like object, not %srM r: �Bz-expected single byte elements, not %r from %sr# z(expected 1-D data, not %d-D data from %s)rM r: r� )r r r r r� �ndim)r �m�err�msgr r r! �_input_type_check s "r� c C sj t | � g } xJ t d t | � t � D]0 } | | | t � } | j t j | � � q) Wd j | � S)zTEncode a bytestring into a bytestring containing multiple lines of base-64 data.r rh )r� rL r( r� ry r& r' rk )r �piecesr7 r� r r r! r s c C s) d d l } | j d t d � t | � S)z Legacy alias of encodebytes().r Nz7encodestring() is a deprecated alias, use encodebytes()r$ )�warnings�warn�DeprecationWarningr )r r� r r r! � encodestring s r� c C s t | � t j | � S)z6Decode a bytestring of base-64 data into a bytestring.)r� r& r3 )r r r r! r ' s c C s) d d l } | j d t d � t | � S)z Legacy alias of decodebytes().r Nz7decodestring() is a deprecated alias, use decodebytes()r$ )r� r� r� r )r r� r r r! � decodestring, s r� c C s| d d l } d d l } y) | j | j d d � d � \ } } Wn` | j k r� } z= | j | _ t | � t d | j d � | j d � WYd d } ~ Xn Xt } xj | D]b \ } } | d k r� t } n | d k r� t } n | d k r� t } n | d k r� t � d Sq� W| r_| d d k r_t | d d � � } | | | j j � Wd QXn | | j j | j j � d S) zSmall main programr Nr# Zdeutz�usage: %s [-d|-e|-u|-t] [file|-] -d, -u: decode -e: encode (default) -t: encode and decode string 'Aladdin:open sesame'r$ z-ez-dz-uz-t�-�rb)�sys�getopt�argvr� �stderr�stdout�print�exitr r �test�open�buffer�stdin) r� r� Zopts�argsr� �func�or9 �fr r r! �main5 s0 ) r� c C sd d } t t | � � t | � } t t | � � t | � } t t | � � | | k s` t � d S)Ns Aladdin:open sesame)r� r* r r r) )Zs0�s1�s2r r r! r� O s r� �__main__)2�__doc__r0 ri r& �__all__r, rI r r" r r r r r- r4 r5 r r rH rG rU r r r r rt rv rw rz ro r r r� r� r� r� r r Z MAXLINESIZEr� r r r� r r� r r� r� r� r r r r r! �<module> sh (K $+ C *