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Zd#d ZdFd$d Zdadad%Zd&Z dGd'd(Z ddddd)d*dZ ddd+d,d-dZ d.Z da!da"da#dHd/d
Z$d0d Z%d1Z&e&d2 d3 Z'd4d Z(d5d Z)d6d7 Z*d8d Z+d9d: Z,d;d Z-dd? Z/d@dA Z0e1dBkre/ dS )IzDBase16, Base32, Base64 (RFC 3548), Base85 and Ascii85 data encodings Nencodedecode encodebytes decodebytes b64encode b64decode b32encode b32decode b16encode b16decode b85encode b85decode a85encode a85decodestandard_b64encodestandard_b64decodeurlsafe_b64encodeurlsafe_b64decodec C s| t | tr4z | dW S tk
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d Y nX d S )Nasciiz4string argument should contain only ASCII charactersz>argument should be a bytes-like object or ASCII string, not %r)
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r# c C sD t j| dd}|dk r@t|dks.tt||td|S |S )a* Encode the bytes-like object s using Base64 and return a bytes object.
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b2a_base64lenAssertionErrorrepr translatebytes maketrans)r altcharsencodedr! r! r" r 3 s
Fc C sf t | } |dk rBt |}t|dks0tt|| t|d} |r\td| s\t
dt | S )an Decode the Base64 encoded bytes-like object or ASCII string s.
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which specifies the alternative alphabet used instead of the '+' and '/'
characters.
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s is incorrectly padded.
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to the padding check. If validate is True, these non-alphabet characters
in the input result in a binascii.Error.
Nr% r& s [A-Za-z0-9+/]*={0,2}zNon-base64 digit found) r# r) r* r+ r, r- r. re fullmatchr' Error
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c C s t | S )zrEncode bytes-like object s using the standard Base64 alphabet.
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)r r r! r! r" r Z s c C s t | S )aQ Decode bytes encoded with the standard Base64 alphabet.
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)r r r! r! r" r a s r& s -_c C s t | tS )zEncode bytes using the URL- and filesystem-safe Base64 alphabet.
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bytes object. The alphabet uses '-' instead of '+' and '_' instead of
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)r r, _urlsafe_encode_translationr r! r! r" r o s c C s t | } | t} t| S )a Decode bytes using the URL- and filesystem-safe Base64 alphabet.
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is returned as a bytes object. A binascii.Error is raised if the input
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alphabet, and are not a plus '+' or slash '/', are discarded prior to the
padding check.
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)r# r, _urlsafe_decode_translationr r r! r! r" r x s
s ABCDEFGHIJKLMNOPQRSTUVWXYZ234567c s> t dkr,dd tD fdd D a d t| tsBt| } t| d }|rb| dd| } t }tj }t }t
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krd|dd< nF|dkrd|dd< n.|dkr d|dd< n|dkr6d|dd< t |S )zKEncode the bytes-like object s using Base32 and return a bytes object.
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s z b32encode..c s g | ]} D ] }|| q qS r! r! r9 abZb32tabr! r" r; s r big i
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|S )aZ Decode the Base32 encoded bytes-like object or ASCII string s.
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acceptable as input. For security purposes, the default is False.
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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.
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characters present in the input.
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s z b32decode.. zIncorrect paddingrF s 01 OrK r r@ zNon-base32 digit foundrB > r rF rH rJ + )_b32rev enumeraterN r# r) r' r3 r* r+ r, r- r. upperrstriprO rR KeyErrorto_bytes)
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c C s t | S )zKEncode the bytes-like object s using Base16 and return a bytes object.
)r' Zhexlifyr_ r r! r! r" r
s c C s4 t | } |r| } td| r*tdt| S )a Decode the Base16 encoded bytes-like object or ASCII string s.
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acceptable as input. For security purposes, the default is False.
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s is incorrectly padded or if there are non-alphabet characters present
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s [^0-9A-F]zNon-base16 digit found)r# r_ r1 searchr' r3 Z unhexlify)r rc r! r! r" r s
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|S ) NrJ rA z!%dIc sP g | ]H}r|sd n6r$|dkr$dn&|d |d d |d qS ) zi yi^ U i9 r! )r9 Zwordcharschars2foldnuls
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z _85encode..rL rh r r@ ) r r r r r) structStructZunpackjoin) r> rl rm padrn ro paddingZwordschunksr! rk r" _85encode s
rw )ro wrapcolrt adobec s t dkr*dd tddD add tD a t| tt |d| |rHt rt|rVdnd fd
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d| |r t 7 S )a Encode bytes-like object b using Ascii85 and return a bytes object.
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 (b'\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 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 |fqS r! r7 r8 r! r! r" r; D s z a85encode..! v c S s g | ]}t D ] }|| q qS r! ) _a85charsr< r! r! r" r; E s Tr% rF c s g | ]} || qS r! r! r8 resultrx r! r" r; M s r rL rp
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} | S )a Decode the Ascii85 encoded bytes-like object or ASCII string b.
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
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z1Ascii85 encoded byte sequences must end with {!r}r% N!Is uuuurz u r@ r rj zAscii85 overflowz zz inside Ascii85 5-tuples y zy inside Ascii85 5-tuples zNon-Ascii85 digit found: %crp rJ )r# endswithr r format
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sU 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~c C s2 t dkr$dd tD add tD a t| tt |S )zEncode bytes-like object b in base85 format and return a bytes object.
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4 bytes before encoding.
Nc S s g | ]}t |fqS r! r7 r8 r! r! r" r; s z b85encode..c S s g | ]}t D ] }|| q qS r! ) _b85charsr< r! r! r" r; s )
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C sJ t dkr,dgd a ttD ]\}}|t |< qt| } t| d }| d| } g }tdj}tdt| dD ]}| ||d }d}z |D ]}|d t | }qW nF t k
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|} |rF| d| } | S ) zqDecode the base85-encoded bytes-like object or ASCII string b
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N r@ ~r r rj z#bad base85 character at position %dz+base85 overflow in hunk starting at byte %drp )_b85decr^ r r# r) rq rr r rR r r r r rs )
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rD } zd| jj }t||W 5 d }~X Y nX |jdkrjd|j| jjf }t||jdkrd|j| jjf }t|d S )Nz"expected bytes-like object, not %s)rT r> Bz-expected single byte elements, not %r from %srF z(expected 1-D data, not %d-D data from %s)r r r r r ndim)r merrmsgr! r! r" _input_type_check s
r c C sL t | g }tdt| tD ]$}| ||t }|t| q d|S )zVEncode a bytestring into a bytes object containing multiple lines
of base-64 data.r rp )r rR r) r r r' r( rs )r piecesr: r r! r! r" r s c C s ddl }|dtd t| S )z Legacy alias of encodebytes().r NzAencodestring() is a deprecated alias since 3.1, use encodebytes()r% )warningswarnDeprecationWarningr r r r! r! r" encodestring s r c C s t | t| S )z8Decode a bytestring of base-64 data into a bytes object.)r r' r4 r r! r! r" r s c C s ddl }|dtd t| S )z Legacy alias of decodebytes().r NzHdecodestring() is a deprecated alias since Python 3.1, use decodebytes()r% )r r r r r r! r! r" decodestring$ s r c
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