File: //usr/lib/python2.4/base64.pyc
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c C sO t i | ƒ d } | d j o+ t | h d | d <d | d <ƒ Sn | S( sl Encode a string using Base64.
s is the string to encode. Optional altchars must be a string of at least
length 2 (additional characters are ignored) 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 string is returned.
iÿÿÿÿt +i t /i N( t binasciit
b2a_base64R t encodedR t NoneR ( R R R ( ( R R * s
+c C sv | d j o- t | h | d d <| d d <ƒ } n y t i | ƒ SWn$ t i j
o } t | ƒ ‚ n Xd S( sž Decode a Base64 encoded string.
s is the string to decode. Optional altchars must be a string of at least
length 2 (additional characters are ignored) which specifies the
alternative alphabet used instead of the '+' and '/' characters.
The decoded string is returned. A TypeError is raised if s were
incorrectly padded or if there are non-alphabet characters present in the
string.
i R i R N( R R R R R t
a2b_base64t Errort msgt TypeError( R R R# ( ( R R ; s
-c C s
t | ƒ S( sy Encode a string using the standard Base64 alphabet.
s is the string to encode. The encoded string is returned.
N( R R ( R ( ( R R
O s c C s
t | ƒ S( s Decode a string encoded with the standard Base64 alphabet.
s is the string to decode. The decoded string is returned. A TypeError
is raised if the string is incorrectly padded or if there are non-alphabet
characters present in the string.
N( R R ( R ( ( R R V s c C s
t | d ƒ S( s¹ Encode a string using a url-safe Base64 alphabet.
s is the string to encode. The encoded string is returned. The alphabet
uses '-' instead of '+' and '_' instead of '/'.
s -_N( R R ( R ( ( R R _ s c C s
t | d ƒ S( sD Decode a string encoded with the standard Base64 alphabet.
s is the string to decode. The decoded string is returned. A TypeError
is raised if the string is incorrectly padded or if there are non-alphabet
characters present in the string.
The alphabet uses '-' instead of '+' and '_' instead of '/'.
s -_N( R R ( R ( ( R R
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t Ki t Ti t 4i t Ci t Li t Ui t 5i t Di t Mi t Vi t 6i t Ei
t Ni t Wi t 7i t Fi t Oi t Xi t Gi t Pi t Yi t Hi t Qi t Zi t Ii t Ri t 2c C s g } t t | ƒ d ƒ \ } } | o | d d | 7} | d 7} n xÛ t | ƒ D]Í } t i d | | d | d d !ƒ \ } } } | | d @d >7} | | d @d >7} | i
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@g ƒ qU Wt i | ƒ } | d j o | d d SnX | d
j o | d d Sn; | d j o | d d Sn | d j o | d d Sn | S( sc Encode a string using Base32.
s is the string to encode. The encoded string is returned.
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t d ƒ ‚ | i | ƒ t i | ƒ S( sG Decode a Base32 encoded string.
s is the 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 string is returned. A TypeError is raised if s were
incorrectly padded or if there are non-alphabet characters present in the
string.
i s Incorrect paddingt 0R: t 1i s (?P<pad>[=]*)$t padi# s Non-base32 digit foundi s %010xR i iÿÿÿÿi iþÿÿÿi iýÿÿÿi iüÿÿÿN( RH RI R RJ RK R$ t map01R t casefoldt uppert padcharst ret searcht mot groupRG t acct shiftt ct _b32revt gett valR t appendR t unhexlifyt lastRU R (
R RZ RY Rf RG RJ RK Ra Rc Ri R\ Rb R_ ( ( R R ¯ sT %
c C s t i | ƒ i ƒ S( sc Encode a string using Base16.
s is the string to encode. The encoded string is returned.
N( R t hexlifyR R[ ( R ( ( R R ù s c C sG | o | i ƒ } n t i d | ƒ o t d ƒ ‚ n t i | ƒ S( sw Decode a Base16 encoded string.
s is the 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 string is returned. A TypeError is raised if s were
incorrectly padded or if there are non-alphabet characters present in the
string.
s [^0-9A-F]s Non-base16 digit foundN( RZ R R[ R] R^ R$ R Rh ( R RZ ( ( R R s
iL c C s” x t o… | i t ƒ } | p Pn xG t | ƒ t j o3 | i t t | ƒ ƒ } | p Pn | | 7} q( Wt i | ƒ } | i | ƒ q Wd S( s Encode a file.N( t Truet inputt readt
MAXBINSIZER RI t nsR R t linet outputt write( Rl Rq R Rp Ro ( ( R R s c C sG x@ t o8 | i ƒ } | p Pn t i | ƒ } | i | ƒ q Wd S( s Decode a file.N( Rk Rl t readlineRp R R! R Rq Rr ( Rl Rq R Rp ( ( R R * s c C s] g } xG t d t | ƒ t ƒ D]- } | | | t !} | i t i | ƒ ƒ q Wd i
| ƒ S( s Encode a string.i R N( t piecesRL RI R Rn RM t chunkRg R R R ( R RM Ru Rt ( ( R R 4 s c C s
t i | ƒ S( s Decode a string.N( R R! R ( R ( ( R R = s c C sL d k } d k } y# | i | i d d ƒ \ } } WnF | i j
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s Small test programNi t deuts usage: %s [-d|-e|-u|-t] [file|-]
-d, -u: decode
-e: encode (default)
-t: encode and decode string 'Aladdin:open sesame'i i s -es -ds -us -tt -t rb( t syst getoptt argvt optst argst errorR# t stderrt stdoutt exitR t funct ot aR t test1t opent stdin( R„ R} Rƒ Ry R‚ R# Rz R| ( ( R t testD s. #
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