[pypy-svn] r14141 - pypy/dist/pypy/lib
jacob at codespeak.net
jacob at codespeak.net
Sun Jul 3 15:36:20 CEST 2005
Author: jacob
Date: Sun Jul 3 15:36:19 2005
New Revision: 14141
Added:
pypy/dist/pypy/lib/binascii.py
- copied unchanged from r14140, pypy/dist/pypy/lib/inprogress_binascii.py
Removed:
pypy/dist/pypy/lib/inprogress_binascii.py
Log:
Renamed.
Deleted: /pypy/dist/pypy/lib/inprogress_binascii.py
==============================================================================
--- /pypy/dist/pypy/lib/inprogress_binascii.py Sun Jul 3 15:36:19 2005
+++ (empty file)
@@ -1,577 +0,0 @@
-class Error(Exception):
- pass
-
-class Incomplete(Exception):
- pass
-
-def a2b_uu(s):
- length = (ord(s[0]) - 0x20) % 64
- a = quadruplets(s[1:].rstrip())
- 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 a]
- 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 result
-
-def quadruplets(s):
- while s:
- try:
- a, b, c, d = s[0], s[1], s[2], s[3]
- except IndexError:
- s += ' '
- yield ord(s[0]), ord(s[1]), ord(s[2]), ord(s[3])
- return
- s = s[4:]
- yield ord(a), ord(b), ord(c), ord(d)
-
-def b2a_uu(s):
- length = len(s)
- if length > 45:
- raise Error, 'At most 45 bytes at once'
-
- a = triples(s)
- 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 a]
- return chr(ord(' ') + (length & 077)) + ''.join(result) + '\n'
-
-def triples(s):
- while s:
- try:
- a, b, c = s[0], s[1], s[2]
- except IndexError:
- s += '\0\0'
- yield ord(s[0]), ord(s[1]), ord(s[2])
- return
- s = s[3:]
- yield ord(a), ord(b), ord(c)
-
-
-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,
-}
-
-def quadruplets_base64(s):
- while s:
- a, b, c, d = table_a2b_base64[s[0]], table_a2b_base64[s[1]], table_a2b_base64[s[2]], table_a2b_base64[s[3]]
- s = s[4:]
- yield a, b, c, d
-
-def a2b_base64(s):
- s = s.rstrip()
- # clean out all invalid characters, this also strips the final '=' padding
- clean_s = []
- for item in s:
- if item in table_a2b_base64:
- clean_s.append(item)
- s = ''.join(clean_s)
- # Add '=' padding back into the string
- if len(s) % 4:
- s = s + ('=' * (4 - len(s) % 4))
-
- a = quadruplets_base64(s[:-4])
- result = [
- chr(A << 2 | ((B >> 4) & 0x3)) +
- chr((B & 0xF) << 4 | ((C >> 2 ) & 0xF)) +
- chr((C & 0x3) << 6 | D )
- for A, B, C, D in a]
-
- if s:
- final = s[-4:]
- if final[2] == '=':
- A = table_a2b_base64[final[0]]
- B = table_a2b_base64[final[1]]
- snippet = chr(A << 2 | ((B >> 4) & 0x3))
- elif final[3] == '=':
- A = table_a2b_base64[final[0]]
- B = table_a2b_base64[final[1]]
- C = table_a2b_base64[final[2]]
- snippet = chr(A << 2 | ((B >> 4) & 0x3)) + \
- chr((B & 0xF) << 4 | ((C >> 2 ) & 0xF))
- else:
- A = table_a2b_base64[final[0]]
- B = table_a2b_base64[final[1]]
- C = table_a2b_base64[final[2]]
- D = table_a2b_base64[final[3]]
- snippet = chr(A << 2 | ((B >> 4) & 0x3)) + \
- chr((B & 0xF) << 4 | ((C >> 2 ) & 0xF)) + \
- chr((C & 0x3) << 6 | D )
- result.append(snippet)
-
- return ''.join(result)
-
-table_b2a_base64 = \
-"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
-
-def b2a_base64(s):
- length = len(s)
- final_length = length % 3
-
- a = triples(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 = ord(final[0])
- snippet = table_b2a_base64[(a >> 2 ) & 0x3F] + \
- table_b2a_base64[(a << 4 ) & 0x3F] + '=='
- else:
- a = ord(final[0])
- b = ord(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 ''.join(result) + snippet + '\n'
-
-def a2b_qp(s):
- parts = s.rstrip().split('=')
-
- # Change the parts in-place
- for index, part in enumerate(parts[1:]):
- if len(part) > 1 and part[0] in hex_numbers and part[1] in hex_numbers:
- parts[index + 1] = chr(strhex_to_int(part[0:2])) + part[2:]
- elif index == len(parts) - 2 and len(part) < 2:
- parts[index + 1] = ''
- else:
- parts[index + 1] = '=' + parts[index + 1]
-
- return ''.join(parts)
-
-def b2a_qp(s):
- """ In this implementation, we are quoting all spaces and tab character.
- This is ok by the standard, though it slightly reduces the
- readability of the quoted string. The CPython implementation
- preserves internal whitespace, which is a different way of
- implementing the standard. The reason we are doing things differently
- is that it greatly simplifies the code.
-
- The CPython implementation does not escape CR and LF characters
- and does not encode newlines as CRLF sequences. This seems to be
- non-standard, and we copy this behaviour.
- """
- crlf = s.find('\r\n')
- lf = s.find('\n')
- linebreak = None
- if crlf >= 0 and crlf <= lf:
- linebreak = '\r\n'
- elif lf > 0:
- linebreak = '\n'
-
- if linebreak:
- s = s.replace('\r\n', '\n')
-
- lines = s.split('\n')
-
- result = []
- for line in lines:
- charlist = []
- count = 0
- for c in line:
- if '!' <= c <= '<' or '>' <= c <= '~' or c in '\n\r':
- if count >= 75:
- charlist.append('=\r\n')
- count = 0
- charlist.append(c)
- count += 1
- else:
- if count >= 72:
- charlist.append('=\r\n')
- count = 0
- snippet = '=' + two_hex_digits(ord(c))
- count += len(snippet)
- charlist.append(snippet)
- result.append(''.join(charlist))
- return linebreak.join(result)
-
-hex_numbers = '0123456789ABCDEF'
-def hex(n):
- if n == 0:
- return '0'
-
- if n < 0:
- n = -n
- sign = '-'
- else:
- sign = ''
- arr = []
- for nibble in hexgen(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 hexgen(n):
- """ Yield a nibble at a time. """
- while n:
- remainder = n % 0x10
- n = n / 0x10
- yield remainder
-
-def strhex_to_int(s):
- i = 0
- for c in s:
- i = i * 0x10 + hex_numbers.index(c)
- return i
-
-hqx_encoding = '!"#$%&\'()*+,-012345689 at ABCDEFGHIJKLMNPQRSTUVXYZ[`abcdefhijklmpqr'
-# Make a fast lookup dictionary for decoding hqx
-hqx_decoding = {}
-for i, c in enumerate(hqx_encoding):
- hqx_decoding[c] = i
-
-def unpadded_quadruples(s):
- while s:
- yield s[:4]
- s = s[4:]
-
-def a2b_hqx(s):
- decoded = []
- for c in s:
- decoded.append(hqx_decoding[c])
- gen = unpadded_quadruples(decoded)
- result = []
- for snippet in gen:
- length = len(snippet)
- if length == 4:
- result.append(chr((snippet[0] << 2) | (snippet[1] >> 6)))
- result.append(chr((snippet[1] << 4) | (snippet[2] >> 4)))
- result.append(chr((snippet[2] << 6) | (snippet[3])))
- elif length == 3:
- result.append(chr((snippet[0] << 2) | (snippet[1] >> 6)))
- result.append(chr((snippet[1] << 4) | (snippet[2] >> 4)))
- elif length == 2:
- result.append(chr((snippet[0] << 2) | (snippet[1] >> 6)))
- else:
- raise TypeError('Wrong number of characters.')
- return ''.join(result)
-
-def unpadded_triples(s):
- while s:
- yield [ord(c) for c in s[:3]]
- s = s[3:]
-
-def b2a_hqx(s):
- result =[]
- gen = unpadded_triples(s)
- for snippet in gen:
- 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) ^ c]
-
- return crc
-
-def rlecode_hqx(s):
- 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 = [
- 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
- 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
- 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
- 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
- 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
- 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
- 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
- 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
- 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
- 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
- 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
- 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
- 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
- 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
- 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
- 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
- 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
- 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
- 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
- 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
- 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
- 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
- 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
- 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
- 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
- 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
- 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
- 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
- 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
- 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
- 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
- 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
- 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
- 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
- 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
- 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
- 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
- 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
- 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
- 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
- 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
- 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
- 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
- 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
- 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
- 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
- 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
- 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
- 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
- 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
- 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
- 0x2d02ef8dL
-]
-
-def crc32(s, crc=0):
- crc = ~long(crc) & 0xffffffffL
- for c in s:
- crc = crc_32_tab[(crc ^ long(ord(c))) & 0xffL] ^ (crc >> 8)
- #/* Note: (crc >> 8) MUST zero fill on left
-
- result = crc ^ 0xffffffffL
-
- 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:
- a, b = s[0], s[1]
- except IndexError:
- if len(s):
- raise TypeError('Odd-length string')
- return
- s = s[2:]
- yield table_hex[ord(a)], table_hex[ord(b)]
-
- pairs = pairs_gen(t)
- for a, b in pairs:
- if a < 0 or b < 0:
- raise TypeError('Non-hexadecimal digit found')
- result.append(chr((a << 4) + b))
- return ''.join(result)
-
-
-unhexlify = a2b_hex
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