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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 Nencodedecode encodebytes decodebytes b64encode b64decode b32encode b32decode b16encode b16decode b85encode b85decode a85encode a85decodestandard_b64encodestandard_b64decodeurlsafe_b64encodeurlsafe_b64decodec C s t | t rD y | j d SWqD t k
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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
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N s +/)binascii
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$Fc C s t | } | d k rf t | } t | d k sH t t | | j t j | d } n | r t j d | r t j
d n t j | S)a Decode a Base64 encoded byte string.
s is the byte string to decode. Optional altchars must be a
string of length 2 which specifies the alternative alphabet used
instead of the '+' and '/' characters.
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incorrectly padded.
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Nr$ s +/s ^[A-Za-z0-9+/]*={0,2}$zNon-base64 digit found) r" r( r) r* r+ r, r- rematchr& Error
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t | S)zEncode a byte string using the standard Base64 alphabet.
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t | S)a Decode a byte string encoded with the standard Base64 alphabet.
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input.
)r )r r r r! r d s s +/s -_c C s t | j t S)zEncode a byte string using a url-safe Base64 alphabet.
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returned. The alphabet uses '-' instead of '+' and '_' instead of
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)r r+ _urlsafe_encode_translation)r r r r! r r s c C s% t | } | j t } t | S)aX Decode a byte string encoded with the standard Base64 alphabet.
s is the byte string to decode. The decoded byte string is
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c C s t j | j S)zrEncode a byte string using Base16.
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s c C sR t | } | r! | j } n t j d | rE t j d n t j | S)a Decode a Base16 encoded byte string.
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specifying whether a lowercase alphabet is acceptable as input.
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s [^0-9A-F]zNon-base16 digit found)r" rW r0 searchr& r2 Z unhexlify)r r[ r r r! r s s <~s ~>c s t | t s$ 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 .r# ra r r< r% r% r% r% ) r r r r r( structStructZunpackjoin) r: rd re padrf rg paddingZwordschunksr )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..! 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
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} 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_appendcurrZ curr_appendZ
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sU 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~c C sH t d k r5 d d t D a d d t D a n t | t t | S)zEncode 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..c S s' g | ] } t D] } | | q q Sr ) _b85chars)r6 r9 r: r r r! r8 s )r _b85alphabet
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