diff --git a/lib/assets/Lib/binascii.py b/lib/assets/Lib/binascii.py
new file mode 100644
--- /dev/null
+++ b/lib/assets/Lib/binascii.py
@@ -0,0 +1,727 @@
+"""A pure Python implementation of binascii.
+
+Rather slow and buggy in corner cases.
+PyPy provides an RPython version too.
+"""
+
+# borrowed from https://bitbucket.org/pypy/pypy/src/f2bf94943a41/lib_pypy/binascii.py
+
+class Error(Exception):
+    pass
+
+class Done(Exception):
+    pass
+
+class Incomplete(Exception):
+    pass
+
+def a2b_uu(s):
+    if not s:
+        return ''
+    
+    length = (ord(s[0]) - 0x20) % 64
+
+    def quadruplets_gen(s):
+        while s:
+            try:
+                yield ord(s[0]), ord(s[1]), ord(s[2]), ord(s[3])
+            except IndexError:
+                s += '   '
+                yield ord(s[0]), ord(s[1]), ord(s[2]), ord(s[3])
+                return
+            s = s[4:]
+
+    try:
+        result = [''.join(
+            [chr((A - 0x20) << 2 | (((B - 0x20) >> 4) & 0x3)),
+            chr(((B - 0x20) & 0xf) << 4 | (((C - 0x20) >> 2) & 0xf)),
+            chr(((C - 0x20) & 0x3) << 6 | ((D - 0x20) & 0x3f))
+            ]) for A, B, C, D in quadruplets_gen(s[1:].rstrip())]
+    except ValueError:
+        raise Error('Illegal char')
+    result = ''.join(result)
+    trailingdata = result[length:]
+    if trailingdata.strip('\x00'):
+        raise Error('Trailing garbage')
+    result = result[:length]
+    if len(result) < length:
+        result += ((length - len(result)) * '\x00')
+    return bytes(result, __BRYTHON__.charset)
+
+
+def b2a_uu(s):
+    length = len(s)
+    if length > 45:
+        raise Error('At most 45 bytes at once')
+
+    def triples_gen(s):
+        while s:
+            try:
+                yield ord(s[0]), ord(s[1]), ord(s[2])
+            except IndexError:
+                s += '\0\0'
+                yield ord(s[0]), ord(s[1]), ord(s[2])
+                return
+            s = s[3:]
+
+    result = [''.join(
+        [chr(0x20 + (( A >> 2                    ) & 0x3F)),
+         chr(0x20 + (((A << 4) | ((B >> 4) & 0xF)) & 0x3F)),
+         chr(0x20 + (((B << 2) | ((C >> 6) & 0x3)) & 0x3F)),
+         chr(0x20 + (( C                         ) & 0x3F))])
+              for A, B, C in triples_gen(s)]
+    return chr(ord(' ') + (length & 0o77)) + ''.join(result) + '\n'
+
+
+table_a2b_base64 = {
+    'A': 0,
+    'B': 1,
+    'C': 2,
+    'D': 3,
+    'E': 4,
+    'F': 5,
+    'G': 6,
+    'H': 7,
+    'I': 8,
+    'J': 9,
+    'K': 10,
+    'L': 11,
+    'M': 12,
+    'N': 13,
+    'O': 14,
+    'P': 15,
+    'Q': 16,
+    'R': 17,
+    'S': 18,
+    'T': 19,
+    'U': 20,
+    'V': 21,
+    'W': 22,
+    'X': 23,
+    'Y': 24,
+    'Z': 25,
+    'a': 26,
+    'b': 27,
+    'c': 28,
+    'd': 29,
+    'e': 30,
+    'f': 31,
+    'g': 32,
+    'h': 33,
+    'i': 34,
+    'j': 35,
+    'k': 36,
+    'l': 37,
+    'm': 38,
+    'n': 39,
+    'o': 40,
+    'p': 41,
+    'q': 42,
+    'r': 43,
+    's': 44,
+    't': 45,
+    'u': 46,
+    'v': 47,
+    'w': 48,
+    'x': 49,
+    'y': 50,
+    'z': 51,
+    '0': 52,
+    '1': 53,
+    '2': 54,
+    '3': 55,
+    '4': 56,
+    '5': 57,
+    '6': 58,
+    '7': 59,
+    '8': 60,
+    '9': 61,
+    '+': 62,
+    '/': 63,
+    '=': 0,
+}
+
+
+def a2b_base64(s):
+    if not isinstance(s, (str, bytes)):
+        raise TypeError("expected string, got %r" % (s,))
+    s = s.rstrip()
+    # clean out all invalid characters, this also strips the final '=' padding
+    # check for correct padding
+
+    def next_valid_char(s, pos):
+        for i in range(pos + 1, len(s)):
+            c = s[i]
+            if c < 0x7f:
+                try:
+                    table_a2b_base64[chr(c)]
+                    return chr(c)
+                except KeyError:
+                    pass
+        return None
+    
+    quad_pos = 0
+    leftbits = 0
+    leftchar = 0
+    res = []
+    for i, c in enumerate(s):
+        if isinstance(c, int):
+            c = chr(c)
+        if c > '\x7f' or c == '\n' or c == '\r' or c == ' ':
+            continue
+        if c == '=':
+            if quad_pos < 2 or (quad_pos == 2 and next_valid_char(s, i) != '='):
+                continue
+            else:
+                leftbits = 0
+                break
+        try:
+            next_c = table_a2b_base64[c]
+        except KeyError:
+            continue
+        quad_pos = (quad_pos + 1) & 0x03
+        leftchar = (leftchar << 6) | next_c
+        leftbits += 6
+        if leftbits >= 8:
+            leftbits -= 8
+            res.append((leftchar >> leftbits & 0xff))
+            leftchar &= ((1 << leftbits) - 1)
+    if leftbits != 0:
+        raise Error('Incorrect padding')
+
+    return bytes(''.join([chr(i) for i in res]),__BRYTHON__.charset)
+    
+table_b2a_base64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"\
+    "0123456789+/"
+
+def b2a_base64(s):
+    length = len(s)
+    final_length = length % 3
+
+    def triples_gen(s):
+        while s:
+            try:
+                yield s[0], s[1], s[2]
+            except IndexError:
+                s += b'\0\0'
+                yield s[0], s[1], s[2]
+                return
+            s = s[3:]
+
+    a = triples_gen(s[ :length - final_length])
+
+    result = [''.join(
+        [table_b2a_base64[( A >> 2                    ) & 0x3F],
+         table_b2a_base64[((A << 4) | ((B >> 4) & 0xF)) & 0x3F],
+         table_b2a_base64[((B << 2) | ((C >> 6) & 0x3)) & 0x3F],
+         table_b2a_base64[( C                         ) & 0x3F]])
+              for A, B, C in a]
+
+    final = s[length - final_length:]
+    if final_length == 0:
+        snippet = ''
+    elif final_length == 1:
+        a = final[0]
+        snippet = table_b2a_base64[(a >> 2 ) & 0x3F] + \
+                  table_b2a_base64[(a << 4 ) & 0x3F] + '=='
+    else:
+        a = final[0]
+        b = final[1]
+        snippet = table_b2a_base64[(a >> 2) & 0x3F] + \
+                  table_b2a_base64[((a << 4) | (b >> 4) & 0xF) & 0x3F] + \
+                  table_b2a_base64[(b << 2) & 0x3F] + '='
+    return bytes(''.join(result) + snippet + '\n', __BRYTHON__.charset)
+
+def a2b_qp(s, header=False):
+    inp = 0
+    odata = []
+    while inp < len(s):
+        if s[inp] == '=':
+            inp += 1
+            if inp >= len(s):
+                break
+            # Soft line breaks
+            if (s[inp] == '\n') or (s[inp] == '\r'):
+                if s[inp] != '\n':
+                    while inp < len(s) and s[inp] != '\n':
+                        inp += 1
+                if inp < len(s):
+                    inp += 1
+            elif s[inp] == '=':
+                # broken case from broken python qp
+                odata.append('=')
+                inp += 1
+            elif s[inp] in hex_numbers and s[inp + 1] in hex_numbers:
+                ch = chr(int(s[inp:inp+2], 16))
+                inp += 2
+                odata.append(ch)
+            else:
+                odata.append('=')
+        elif header and s[inp] == '_':
+            odata.append(' ')
+            inp += 1
+        else:
+            odata.append(s[inp])
+            inp += 1
+    return bytes(''.join(odata), __BRYTHON__.charset)
+
+def b2a_qp(data, quotetabs=False, istext=True, header=False):
+    """quotetabs=True means that tab and space characters are always
+       quoted.
+       istext=False means that \r and \n are treated as regular characters
+       header=True encodes space characters with '_' and requires
+       real '_' characters to be quoted.
+    """
+    MAXLINESIZE = 76
+
+    # See if this string is using CRLF line ends
+    lf = data.find('\n')
+    crlf = lf > 0 and data[lf-1] == '\r'
+
+    inp = 0
+    linelen = 0
+    odata = []
+    while inp < len(data):
+        c = data[inp]
+        if (c > '~' or
+            c == '=' or
+            (header and c == '_') or
+            (c == '.' and linelen == 0 and (inp+1 == len(data) or
+                                            data[inp+1] == '\n' or
+                                            data[inp+1] == '\r')) or
+            (not istext and (c == '\r' or c == '\n')) or
+            ((c == '\t' or c == ' ') and (inp + 1 == len(data))) or
+            (c <= ' ' and c != '\r' and c != '\n' and
+             (quotetabs or (not quotetabs and (c != '\t' and c != ' '))))):
+            linelen += 3
+            if linelen >= MAXLINESIZE:
+                odata.append('=')
+                if crlf: odata.append('\r')
+                odata.append('\n')
+                linelen = 3
+            odata.append('=' + two_hex_digits(ord(c)))
+            inp += 1
+        else:
+            if (istext and
+                (c == '\n' or (inp+1 < len(data) and c == '\r' and
+                               data[inp+1] == '\n'))):
+                linelen = 0
+                # Protect against whitespace on end of line
+                if (len(odata) > 0 and
+                    (odata[-1] == ' ' or odata[-1] == '\t')):
+                    ch = ord(odata[-1])
+                    odata[-1] = '='
+                    odata.append(two_hex_digits(ch))
+
+                if crlf: odata.append('\r')
+                odata.append('\n')
+                if c == '\r':
+                    inp += 2
+                else:
+                    inp += 1
+            else:
+                if (inp + 1 < len(data) and
+                    data[inp+1] != '\n' and
+                    (linelen + 1) >= MAXLINESIZE):
+                    odata.append('=')
+                    if crlf: odata.append('\r')
+                    odata.append('\n')
+                    linelen = 0
+
+                linelen += 1
+                if header and c == ' ':
+                    c = '_'
+                odata.append(c)
+                inp += 1
+    return ''.join(odata)
+
+hex_numbers = '0123456789ABCDEF'
+def hex(n):
+    if n == 0:
+        return '0'
+    
+    if n < 0:
+        n = -n
+        sign = '-'
+    else:
+        sign = ''
+    arr = []
+
+    def hex_gen(n):
+        """ Yield a nibble at a time. """
+        while n:
+            yield n % 0x10
+            n = n / 0x10
+
+    for nibble in hex_gen(n):
+        arr = [hex_numbers[nibble]] + arr
+    return sign + ''.join(arr)
+
+def two_hex_digits(n):
+    return hex_numbers[n / 0x10] + hex_numbers[n % 0x10]
+    
+
+def strhex_to_int(s):
+    i = 0
+    for c in s:
+        i = i * 0x10 + hex_numbers.index(c)
+    return i
+
+hqx_encoding = '!"#$%&\'()*+,-012345689@ABCDEFGHIJKLMNPQRSTUVXYZ[`abcdefhijklmpqr'
+
+DONE = 0x7f
+SKIP = 0x7e
+FAIL = 0x7d
+    
+table_a2b_hqx = [
+    #^@    ^A    ^B    ^C    ^D    ^E    ^F    ^G   
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    #\b    \t    \n    ^K    ^L    \r    ^N    ^O   
+    FAIL, FAIL, SKIP, FAIL, FAIL, SKIP, FAIL, FAIL,
+    #^P    ^Q    ^R    ^S    ^T    ^U    ^V    ^W   
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    #^X    ^Y    ^Z    ^[    ^\    ^]    ^^    ^_   
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    #      !     "     #     $     %     &     '   
+    FAIL, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
+    #(     )     *     +     ,     -     .     /   
+    0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, FAIL, FAIL,
+    #0     1     2     3     4     5     6     7   
+    0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, FAIL,
+    #8     9     :     ;     <     =     >     ?   
+    0x14, 0x15, DONE, FAIL, FAIL, FAIL, FAIL, FAIL,
+    #@     A     B     C     D     E     F     G   
+    0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D,
+    #H     I     J     K     L     M     N     O   
+    0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, FAIL,
+    #P     Q     R     S     T     U     V     W   
+    0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, FAIL,
+    #X     Y     Z     [     \     ]     ^     _   
+    0x2C, 0x2D, 0x2E, 0x2F, FAIL, FAIL, FAIL, FAIL,
+    #`     a     b     c     d     e     f     g   
+    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, FAIL,
+    #h     i     j     k     l     m     n     o   
+    0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, FAIL, FAIL,
+    #p     q     r     s     t     u     v     w   
+    0x3D, 0x3E, 0x3F, FAIL, FAIL, FAIL, FAIL, FAIL,
+    #x     y     z     {     |     }     ~    ^?   
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+    FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL, FAIL,
+]
+
+def a2b_hqx(s):
+    result = []
+
+    def quadruples_gen(s):
+        t = []
+        for c in s:
+            res = table_a2b_hqx[ord(c)]
+            if res == SKIP:
+                continue
+            elif res == FAIL:
+                raise Error('Illegal character')
+            elif res == DONE:
+                yield t
+                raise Done
+            else:
+                t.append(res)
+            if len(t) == 4:
+                yield t
+                t = []
+        yield t
+        
+    done = 0
+    try:
+        for snippet in quadruples_gen(s):
+            length = len(snippet)
+            if length == 4:
+                result.append(chr(((snippet[0] & 0x3f) << 2) | (snippet[1] >> 4))) 
+                result.append(chr(((snippet[1] & 0x0f) << 4) | (snippet[2] >> 2))) 
+                result.append(chr(((snippet[2] & 0x03) << 6) | (snippet[3]))) 
+            elif length == 3:
+                result.append(chr(((snippet[0] & 0x3f) << 2) | (snippet[1] >> 4))) 
+                result.append(chr(((snippet[1] & 0x0f) << 4) | (snippet[2] >> 2))) 
+            elif length == 2:
+                result.append(chr(((snippet[0] & 0x3f) << 2) | (snippet[1] >> 4))) 
+    except Done:
+        done = 1
+    except Error:
+        raise
+    return (''.join(result), done)
+    # should this return a bytes object?
+    #return (bytes(''.join(result), __BRYTHON__.charset), done)
+
+def b2a_hqx(s):
+    result =[]
+
+    def triples_gen(s):
+        while s:
+            try:
+                yield ord(s[0]), ord(s[1]), ord(s[2])
+            except IndexError:
+                yield tuple([ord(c) for c in s])
+            s = s[3:]
+
+    for snippet in triples_gen(s):
+        length = len(snippet)
+        if length == 3:
+            result.append(
+                hqx_encoding[(snippet[0] & 0xfc) >> 2])
+            result.append(hqx_encoding[
+                ((snippet[0] & 0x03) << 4) | ((snippet[1] & 0xf0) >> 4)])
+            result.append(hqx_encoding[
+                (snippet[1] & 0x0f) << 2 | ((snippet[2] & 0xc0) >> 6)])
+            result.append(hqx_encoding[snippet[2] & 0x3f])
+        elif length == 2:
+            result.append(
+                hqx_encoding[(snippet[0] & 0xfc) >> 2])
+            result.append(hqx_encoding[
+                ((snippet[0] & 0x03) << 4) | ((snippet[1] & 0xf0) >> 4)])
+            result.append(hqx_encoding[
+                (snippet[1] & 0x0f) << 2])
+        elif length == 1:
+            result.append(
+                hqx_encoding[(snippet[0] & 0xfc) >> 2])
+            result.append(hqx_encoding[
+                ((snippet[0] & 0x03) << 4)])
+    return ''.join(result)
+
+crctab_hqx = [
+        0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
+        0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
+        0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
+        0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
+        0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
+        0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
+        0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
+        0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
+        0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
+        0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
+        0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
+        0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
+        0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
+        0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
+        0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
+        0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
+        0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
+        0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
+        0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
+        0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
+        0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
+        0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
+        0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
+        0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
+        0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
+        0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
+        0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
+        0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
+        0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
+        0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
+        0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
+        0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0,
+]
+
+def crc_hqx(s, crc):
+    for c in s:
+        crc = ((crc << 8) & 0xff00) ^ crctab_hqx[((crc >> 8) & 0xff) ^ ord(c)]
+
+    return crc
+
+def rlecode_hqx(s):
+    """
+    Run length encoding for binhex4.
+    The CPython implementation does not do run length encoding
+    of \x90 characters. This implementation does.
+    """
+    if not s:
+        return ''
+    result = []
+    prev = s[0]
+    count = 1
+    # Add a dummy character to get the loop to go one extra round.
+    # The dummy must be different from the last character of s.
+    # In the same step we remove the first character, which has
+    # already been stored in prev.
+    if s[-1] == '!':
+        s = s[1:] + '?'
+    else:
+        s = s[1:] + '!'
+        
+    for c in s:
+        if c == prev and count < 255:
+            count += 1
+        else:
+            if count == 1:
+                if prev != '\x90':
+                    result.append(prev)
+                else:
+                    result.extend(['\x90', '\x00'])
+            elif count < 4:
+                if prev != '\x90':
+                    result.extend([prev] * count)
+                else:
+                    result.extend(['\x90', '\x00'] * count)
+            else:
+                if prev != '\x90':
+                    result.extend([prev, '\x90', chr(count)])
+                else:
+                    result.extend(['\x90', '\x00', '\x90', chr(count)]) 
+            count = 1
+            prev = c
+        
+    return ''.join(result)
+
+def rledecode_hqx(s):
+    s = s.split('\x90')
+    result = [s[0]]
+    prev = s[0]
+    for snippet in s[1:]:
+        count = ord(snippet[0])
+        if count > 0:
+            result.append(prev[-1] * (count-1))
+            prev = snippet
+        else:
+            result.append('\x90')
+            prev = '\x90'
+        result.append(snippet[1:])
+
+    return ''.join(result)
+
+crc_32_tab = [
+    0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
+    0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
+    0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
+    0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+    0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
+    0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
+    0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+    0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
+    0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
+    0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
+    0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
+    0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
+    0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
+    0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+    0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
+    0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
+    0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+    0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
+    0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
+    0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
+    0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
+    0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
+    0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
+    0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+    0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
+    0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
+    0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+    0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
+    0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
+    0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
+    0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
+    0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
+    0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
+    0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+    0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
+    0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
+    0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+    0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
+    0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
+    0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
+    0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
+    0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
+    0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
+    0x2d02ef8d
+]
+
+def crc32(s, crc=0):
+    result = 0
+    crc = ~int(crc) & 0xffffffff
+    #crc = ~long(crc) & 0xffffffffL
+    for c in s:
+        crc = crc_32_tab[(crc ^ int(ord(c))) & 0xff] ^ (crc >> 8)
+        #crc = crc_32_tab[(crc ^ long(ord(c))) & 0xffL] ^ (crc >> 8)
+        #/* Note:  (crc >> 8) MUST zero fill on left
+
+    result = crc ^ 0xffffffff
+    
+    if result > 2**31:
+        result = ((result + 2**31) % 2**32) - 2**31
+
+    return result
+
+def b2a_hex(s):
+    result = []
+    for char in s:
+        c = (ord(char) >> 4) & 0xf
+        if c > 9:
+            c = c + ord('a') - 10
+        else:
+            c = c + ord('0')
+        result.append(chr(c))
+        c = ord(char) & 0xf
+        if c > 9:
+            c = c + ord('a') - 10
+        else:
+            c = c + ord('0')
+        result.append(chr(c))
+    return ''.join(result)
+
+hexlify = b2a_hex
+
+table_hex = [
+    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+    0, 1, 2, 3,  4, 5, 6, 7,  8, 9,-1,-1, -1,-1,-1,-1,
+    -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+    -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,
+    -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1
+]
+
+
+def a2b_hex(t):
+    result = []
+
+    def pairs_gen(s):
+        while s:
+            try:
+                yield table_hex[ord(s[0])], table_hex[ord(s[1])]
+            except IndexError:
+                if len(s):
+                    raise TypeError('Odd-length string')
+                return
+            s = s[2:]
+
+    for a, b in pairs_gen(t):
+        if a < 0 or b < 0:
+            raise TypeError('Non-hexadecimal digit found')
+        result.append(chr((a << 4) + b))
+    return bytes(''.join(result), __BRYTHON__.charset)
+    
+
+unhexlify = a2b_hex