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ðŸ“„ __future__.py(4.48 KB)
ðŸ“„ __phello__.foo.py(64 B)
ðŸ“ __pycache__
ðŸ“„ _compat_pickle.py(4.24 KB)
ðŸ“„ _dummy_thread.py(4.66 KB)
ðŸ“„ _markupbase.py(14.26 KB)
ðŸ“„ _osx_support.py(18.41 KB)
ðŸ“„ _pyio.py(71.2 KB)
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ðŸ“„ _sysconfigdata.py(22.31 KB)
ðŸ“„ _threading_local.py(7.24 KB)
ðŸ“„ _weakrefset.py(5.57 KB)
ðŸ“„ abc.py(7.87 KB)
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ðŸ“„ antigravity.py(475 B)
ðŸ“„ argparse.py(86.98 KB)
ðŸ“„ ast.py(11.86 KB)
ðŸ“„ asynchat.py(11.32 KB)
ðŸ“„ asyncore.py(20.27 KB)
ðŸ“„ base64.py(13.66 KB)
ðŸ“„ bdb.py(21.38 KB)
ðŸ“„ binhex.py(13.39 KB)
ðŸ“„ bisect.py(2.53 KB)
ðŸ“„ bz2.py(18.04 KB)
ðŸ“„ cProfile.py(6.21 KB)
ðŸ“„ calendar.py(22.4 KB)
ðŸ“„ cgi.py(34.72 KB)
ðŸ“„ cgitb.py(11.76 KB)
ðŸ“„ chunk.py(5.25 KB)
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ðŸ“„ code.py(9.79 KB)
ðŸ“„ codecs.py(35.11 KB)
ðŸ“„ codeop.py(5.85 KB)
ðŸ“ collections
ðŸ“„ colorsys.py(3.6 KB)
ðŸ“„ compileall.py(9.51 KB)
ðŸ“ concurrent
ðŸ“ config-3.3m
ðŸ“„ configparser.py(48.28 KB)
ðŸ“„ contextlib.py(8.91 KB)
ðŸ“„ copy.py(8.78 KB)
ðŸ“„ copyreg.py(6.46 KB)
ðŸ“„ crypt.py(1.83 KB)
ðŸ“„ csv.py(15.81 KB)
ðŸ“ ctypes
ðŸ“ curses
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ðŸ“ dbm
ðŸ“„ decimal.py(223.2 KB)
ðŸ“„ difflib.py(80.58 KB)
ðŸ“„ dis.py(9.9 KB)
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ðŸ“„ doctest.py(100.52 KB)
ðŸ“„ dummy_threading.py(2.75 KB)
ðŸ“ email
ðŸ“ encodings
ðŸ“„ filecmp.py(9.37 KB)
ðŸ“„ fileinput.py(13.92 KB)
ðŸ“„ fnmatch.py(3.09 KB)
ðŸ“„ formatter.py(14.58 KB)
ðŸ“„ fractions.py(22.49 KB)
ðŸ“„ ftplib.py(39.31 KB)
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ðŸ“„ genericpath.py(3.02 KB)
ðŸ“„ getopt.py(7.31 KB)
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ðŸ“„ hmac.py(4.34 KB)
ðŸ“ html
ðŸ“ http
ðŸ“ idlelib
ðŸ“„ imaplib.py(48.94 KB)
ðŸ“„ imghdr.py(3.45 KB)
ðŸ“„ imp.py(9.5 KB)
ðŸ“ importlib
ðŸ“„ inspect.py(77.11 KB)
ðŸ“„ io.py(3.2 KB)
ðŸ“„ ipaddress.py(68.66 KB)
ðŸ“ json
ðŸ“„ keyword.py(2.01 KB)
ðŸ“ lib-dynload
ðŸ“ lib2to3
ðŸ“„ linecache.py(3.77 KB)
ðŸ“„ locale.py(91.03 KB)
ðŸ“ logging
ðŸ“„ lzma.py(17.04 KB)
ðŸ“„ macpath.py(5.49 KB)
ðŸ“„ macurl2path.py(2.67 KB)
ðŸ“„ mailbox.py(77.24 KB)
ðŸ“„ mailcap.py(7.26 KB)
ðŸ“„ mimetypes.py(20.25 KB)
ðŸ“„ modulefinder.py(22.65 KB)
ðŸ“ multiprocessing
ðŸ“„ netrc.py(5.61 KB)
ðŸ“„ nntplib.py(41.78 KB)
ðŸ“„ ntpath.py(19.96 KB)
ðŸ“„ nturl2path.py(2.34 KB)
ðŸ“„ numbers.py(10.15 KB)
ðŸ“„ opcode.py(4.98 KB)
ðŸ“„ optparse.py(58.93 KB)
ðŸ“„ os.py(33.96 KB)
ðŸ“„ os2emxpath.py(4.55 KB)
ðŸ“„ pdb.py(59.23 KB)
ðŸ“„ pickle.py(46.74 KB)
ðŸ“„ pickletools.py(79.44 KB)
ðŸ“„ pipes.py(8.71 KB)
ðŸ“„ pkgutil.py(21.03 KB)
ðŸ“ plat-linux
ðŸ“„ platform.py(49.55 KB)
ðŸ“„ plistlib.py(14.43 KB)
ðŸ“„ poplib.py(11.11 KB)
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ðŸ“„ pprint.py(12.4 KB)
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ðŸ“„ pstats.py(25.75 KB)
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ðŸ“„ py_compile.py(6.56 KB)
ðŸ“„ pyclbr.py(13.12 KB)
ðŸ“„ pydoc.py(99.26 KB)
ðŸ“ pydoc_data
ðŸ“„ queue.py(8.63 KB)
ðŸ“„ quopri.py(7.14 KB)
ðŸ“„ random.py(25.06 KB)
ðŸ“„ re.py(14.62 KB)
ðŸ“„ reprlib.py(4.99 KB)
ðŸ“„ rlcompleter.py(5.4 KB)
ðŸ“„ runpy.py(10.17 KB)
ðŸ“„ sched.py(6.25 KB)
ðŸ“„ shelve.py(8.05 KB)
ðŸ“„ shlex.py(11.23 KB)
ðŸ“„ shutil.py(38.23 KB)
ðŸ“ site-packages
ðŸ“„ site.py(21.46 KB)
ðŸ“„ smtpd.py(29.5 KB)
ðŸ“„ smtplib.py(37.13 KB)
ðŸ“„ sndhdr.py(6.07 KB)
ðŸ“„ socket.py(14.56 KB)
ðŸ“„ socketserver.py(23.63 KB)
ðŸ“ sqlite3
ðŸ“„ sre_compile.py(15.96 KB)
ðŸ“„ sre_constants.py(7.06 KB)
ðŸ“„ sre_parse.py(29.5 KB)
ðŸ“„ ssl.py(23.9 KB)
ðŸ“„ stat.py(4.2 KB)
ðŸ“„ string.py(9.19 KB)
ðŸ“„ stringprep.py(12.61 KB)
ðŸ“„ struct.py(238 B)
ðŸ“„ subprocess.py(65.99 KB)
ðŸ“„ sunau.py(17.11 KB)
ðŸ“„ symbol.py(2 KB)
ðŸ“„ symtable.py(7.21 KB)
ðŸ“„ sysconfig.py(24.58 KB)
ðŸ“„ tabnanny.py(11.14 KB)
ðŸ“„ tarfile.py(86.78 KB)
ðŸ“„ telnetlib.py(26.71 KB)
ðŸ“„ tempfile.py(22.47 KB)
ðŸ“ test
ðŸ“„ textwrap.py(16.1 KB)
ðŸ“„ this.py(1003 B)
ðŸ“„ threading.py(44.57 KB)
ðŸ“„ timeit.py(12.1 KB)
ðŸ“„ token.py(2.96 KB)
ðŸ“„ tokenize.py(24.29 KB)
ðŸ“„ trace.py(30.75 KB)
ðŸ“„ traceback.py(11.7 KB)
ðŸ“„ tty.py(879 B)
ðŸ“„ types.py(3.09 KB)
ðŸ“ unittest
ðŸ“ urllib
ðŸ“„ uu.py(6.61 KB)
ðŸ“„ uuid.py(21.83 KB)
ðŸ“ venv
ðŸ“„ warnings.py(13.5 KB)
ðŸ“„ wave.py(18.14 KB)
ðŸ“„ weakref.py(11.23 KB)
ðŸ“„ webbrowser.py(22.38 KB)
ðŸ“ wsgiref
ðŸ“„ xdrlib.py(5.25 KB)
ðŸ“ xml
ðŸ“ xmlrpc
ðŸ“„ zipfile.py(64.87 KB)

Editing: base64.py

#! /opt/alt/python33/bin/python3.3

"""RFC 3548: Base16, Base32, Base64 Data Encodings"""

# Modified 04-Oct-1995 by Jack Jansen to use binascii module
# Modified 30-Dec-2003 by Barry Warsaw to add full RFC 3548 support
# Modified 22-May-2007 by Guido van Rossum to use bytes everywhere

import re
import struct
import binascii

__all__ = [
    # Legacy interface exports traditional RFC 1521 Base64 encodings
    'encode', 'decode', 'encodebytes', 'decodebytes',
    # Generalized interface for other encodings
    'b64encode', 'b64decode', 'b32encode', 'b32decode',
    'b16encode', 'b16decode',
    # Standard Base64 encoding
    'standard_b64encode', 'standard_b64decode',
    # Some common Base64 alternatives.  As referenced by RFC 3458, see thread
    # starting at:
    #
    # http://zgp.org/pipermail/p2p-hackers/2001-September/000316.html
    'urlsafe_b64encode', 'urlsafe_b64decode',
    ]

bytes_types = (bytes, bytearray)  # Types acceptable as binary data

def _bytes_from_decode_data(s):
    if isinstance(s, str):
        try:
            return s.encode('ascii')
        except UnicodeEncodeError:
            raise ValueError('string argument should contain only ASCII characters')
    elif isinstance(s, bytes_types):
        return s
    else:
        raise TypeError("argument should be bytes or ASCII string, not %s" % s.__class__.__name__)

# Base64 encoding/decoding uses binascii

def b64encode(s, altchars=None):
    """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.
    """
    if not isinstance(s, bytes_types):
        raise TypeError("expected bytes, not %s" % s.__class__.__name__)
    # Strip off the trailing newline
    encoded = binascii.b2a_base64(s)[:-1]
    if altchars is not None:
        if not isinstance(altchars, bytes_types):
            raise TypeError("expected bytes, not %s"
                            % altchars.__class__.__name__)
        assert len(altchars) == 2, repr(altchars)
        return encoded.translate(bytes.maketrans(b'+/', altchars))
    return encoded

def b64decode(s, altchars=None, validate=False):
    """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.
    """
    s = _bytes_from_decode_data(s)
    if altchars is not None:
        altchars = _bytes_from_decode_data(altchars)
        assert len(altchars) == 2, repr(altchars)
        s = s.translate(bytes.maketrans(altchars, b'+/'))
    if validate and not re.match(b'^[A-Za-z0-9+/]*={0,2}$', s):
        raise binascii.Error('Non-base64 digit found')
    return binascii.a2b_base64(s)

def standard_b64encode(s):
    """Encode a byte string using the standard Base64 alphabet.

s is the byte string to encode.  The encoded byte string is returned.
    """
    return b64encode(s)

def standard_b64decode(s):
    """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.
    """
    return b64decode(s)

_urlsafe_encode_translation = bytes.maketrans(b'+/', b'-_')
_urlsafe_decode_translation = bytes.maketrans(b'-_', b'+/')

def urlsafe_b64encode(s):
    """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
    '/'.
    """
    return b64encode(s).translate(_urlsafe_encode_translation)

def urlsafe_b64decode(s):
    """Decode a byte string encoded with the standard Base64 alphabet.

The alphabet uses '-' instead of '+' and '_' instead of '/'.
    """
    s = _bytes_from_decode_data(s)
    s = s.translate(_urlsafe_decode_translation)
    return b64decode(s)

# Base32 encoding/decoding must be done in Python
_b32alphabet = {
    0: b'A',  9: b'J', 18: b'S', 27: b'3',
    1: b'B', 10: b'K', 19: b'T', 28: b'4',
    2: b'C', 11: b'L', 20: b'U', 29: b'5',
    3: b'D', 12: b'M', 21: b'V', 30: b'6',
    4: b'E', 13: b'N', 22: b'W', 31: b'7',
    5: b'F', 14: b'O', 23: b'X',
    6: b'G', 15: b'P', 24: b'Y',
    7: b'H', 16: b'Q', 25: b'Z',
    8: b'I', 17: b'R', 26: b'2',
    }

_b32tab = [v[0] for k, v in sorted(_b32alphabet.items())]
_b32rev = dict([(v[0], k) for k, v in _b32alphabet.items()])

def b32encode(s):
    """Encode a byte string using Base32.

s is the byte string to encode.  The encoded byte string is returned.
    """
    if not isinstance(s, bytes_types):
        raise TypeError("expected bytes, not %s" % s.__class__.__name__)
    quanta, leftover = divmod(len(s), 5)
    # Pad the last quantum with zero bits if necessary
    if leftover:
        s = s + bytes(5 - leftover)  # Don't use += !
        quanta += 1
    encoded = bytearray()
    for i in range(quanta):
        # c1 and c2 are 16 bits wide, c3 is 8 bits wide.  The intent of this
        # code is to process the 40 bits in units of 5 bits.  So we take the 1
        # leftover bit of c1 and tack it onto c2.  Then we take the 2 leftover
        # bits of c2 and tack them onto c3.  The shifts and masks are intended
        # to give us values of exactly 5 bits in width.
        c1, c2, c3 = struct.unpack('!HHB', s[i*5:(i+1)*5])
        c2 += (c1 & 1) << 16 # 17 bits wide
        c3 += (c2 & 3) << 8  # 10 bits wide
        encoded += bytes([_b32tab[c1 >> 11],         # bits 1 - 5
                          _b32tab[(c1 >> 6) & 0x1f], # bits 6 - 10
                          _b32tab[(c1 >> 1) & 0x1f], # bits 11 - 15
                          _b32tab[c2 >> 12],         # bits 16 - 20 (1 - 5)
                          _b32tab[(c2 >> 7) & 0x1f], # bits 21 - 25 (6 - 10)
                          _b32tab[(c2 >> 2) & 0x1f], # bits 26 - 30 (11 - 15)
                          _b32tab[c3 >> 5],          # bits 31 - 35 (1 - 5)
                          _b32tab[c3 & 0x1f],        # bits 36 - 40 (1 - 5)
                          ])
    # Adjust for any leftover partial quanta
    if leftover == 1:
        encoded[-6:] = b'======'
    elif leftover == 2:
        encoded[-4:] = b'===='
    elif leftover == 3:
        encoded[-3:] = b'==='
    elif leftover == 4:
        encoded[-1:] = b'='
    return bytes(encoded)

def b32decode(s, casefold=False, map01=None):
    """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.
    """
    s = _bytes_from_decode_data(s)
    quanta, leftover = divmod(len(s), 8)
    if leftover:
        raise binascii.Error('Incorrect padding')
    # Handle section 2.4 zero and one mapping.  The flag map01 will be either
    # False, or the character to map the digit 1 (one) to.  It should be
    # either L (el) or I (eye).
    if map01 is not None:
        map01 = _bytes_from_decode_data(map01)
        assert len(map01) == 1, repr(map01)
        s = s.translate(bytes.maketrans(b'01', b'O' + map01))
    if casefold:
        s = s.upper()
    # Strip off pad characters from the right.  We need to count the pad
    # characters because this will tell us how many null bytes to remove from
    # the end of the decoded string.
    padchars = 0
    mo = re.search(b'(?P<pad>[=]*)$', s)
    if mo:
        padchars = len(mo.group('pad'))
        if padchars > 0:
            s = s[:-padchars]
    # Now decode the full quanta
    parts = []
    acc = 0
    shift = 35
    for c in s:
        val = _b32rev.get(c)
        if val is None:
            raise binascii.Error('Non-base32 digit found')
        acc += _b32rev[c] << shift
        shift -= 5
        if shift < 0:
            parts.append(binascii.unhexlify(bytes('%010x' % acc, "ascii")))
            acc = 0
            shift = 35
    # Process the last, partial quanta
    last = binascii.unhexlify(bytes('%010x' % acc, "ascii"))
    if padchars == 0:
        last = b''                      # No characters
    elif padchars == 1:
        last = last[:-1]
    elif padchars == 3:
        last = last[:-2]
    elif padchars == 4:
        last = last[:-3]
    elif padchars == 6:
        last = last[:-4]
    else:
        raise binascii.Error('Incorrect padding')
    parts.append(last)
    return b''.join(parts)

# RFC 3548, Base 16 Alphabet specifies uppercase, but hexlify() returns
# lowercase.  The RFC also recommends against accepting input case
# insensitively.
def b16encode(s):
    """Encode a byte string using Base16.

s is the byte string to encode.  The encoded byte string is returned.
    """
    if not isinstance(s, bytes_types):
        raise TypeError("expected bytes, not %s" % s.__class__.__name__)
    return binascii.hexlify(s).upper()

def b16decode(s, casefold=False):
    """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 = _bytes_from_decode_data(s)
    if casefold:
        s = s.upper()
    if re.search(b'[^0-9A-F]', s):
        raise binascii.Error('Non-base16 digit found')
    return binascii.unhexlify(s)

# Legacy interface.  This code could be cleaned up since I don't believe
# binascii has any line length limitations.  It just doesn't seem worth it
# though.  The files should be opened in binary mode.

MAXLINESIZE = 76 # Excluding the CRLF
MAXBINSIZE = (MAXLINESIZE//4)*3

def encode(input, output):
    """Encode a file; input and output are binary files."""
    while True:
        s = input.read(MAXBINSIZE)
        if not s:
            break
        while len(s) < MAXBINSIZE:
            ns = input.read(MAXBINSIZE-len(s))
            if not ns:
                break
            s += ns
        line = binascii.b2a_base64(s)
        output.write(line)

def decode(input, output):
    """Decode a file; input and output are binary files."""
    while True:
        line = input.readline()
        if not line:
            break
        s = binascii.a2b_base64(line)
        output.write(s)

def encodebytes(s):
    """Encode a bytestring into a bytestring containing multiple lines
    of base-64 data."""
    if not isinstance(s, bytes_types):
        raise TypeError("expected bytes, not %s" % s.__class__.__name__)
    pieces = []
    for i in range(0, len(s), MAXBINSIZE):
        chunk = s[i : i + MAXBINSIZE]
        pieces.append(binascii.b2a_base64(chunk))
    return b"".join(pieces)

def encodestring(s):
    """Legacy alias of encodebytes()."""
    import warnings
    warnings.warn("encodestring() is a deprecated alias, use encodebytes()",
                  DeprecationWarning, 2)
    return encodebytes(s)

def decodebytes(s):
    """Decode a bytestring of base-64 data into a bytestring."""
    if not isinstance(s, bytes_types):
        raise TypeError("expected bytes, not %s" % s.__class__.__name__)
    return binascii.a2b_base64(s)

def decodestring(s):
    """Legacy alias of decodebytes()."""
    import warnings
    warnings.warn("decodestring() is a deprecated alias, use decodebytes()",
                  DeprecationWarning, 2)
    return decodebytes(s)

# Usable as a script...
def main():
    """Small main program"""
    import sys, getopt
    try:
        opts, args = getopt.getopt(sys.argv[1:], 'deut')
    except getopt.error as msg:
        sys.stdout = sys.stderr
        print(msg)
        print("""usage: %s [-d|-e|-u|-t] [file|-]
        -d, -u: decode
        -e: encode (default)
        -t: encode and decode string 'Aladdin:open sesame'"""%sys.argv[0])
        sys.exit(2)
    func = encode
    for o, a in opts:
        if o == '-e': func = encode
        if o == '-d': func = decode
        if o == '-u': func = decode
        if o == '-t': test(); return
    if args and args[0] != '-':
        with open(args[0], 'rb') as f:
            func(f, sys.stdout.buffer)
    else:
        func(sys.stdin.buffer, sys.stdout.buffer)

def test():
    s0 = b"Aladdin:open sesame"
    print(repr(s0))
    s1 = encodebytes(s0)
    print(repr(s1))
    s2 = decodebytes(s1)
    print(repr(s2))
    assert s0 == s2

if __name__ == '__main__':
    main()

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