Update prebuilt Clang to r416183b from Android.
https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef
clang 12.0.5 (based on r416183b) from build 7284624.
Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/linux-x64/clang/python3/lib/python3.9/base64.py b/linux-x64/clang/python3/lib/python3.9/base64.py
new file mode 100755
index 0000000..a28109f
--- /dev/null
+++ b/linux-x64/clang/python3/lib/python3.9/base64.py
@@ -0,0 +1,579 @@
+#! /usr/bin/env python3
+
+"""Base16, Base32, Base64 (RFC 3548), Base85 and Ascii85 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 2045 Base64 encodings
+ 'encode', 'decode', 'encodebytes', 'decodebytes',
+ # Generalized interface for other encodings
+ 'b64encode', 'b64decode', 'b32encode', 'b32decode',
+ 'b16encode', 'b16decode',
+ # Base85 and Ascii85 encodings
+ 'b85encode', 'b85decode', 'a85encode', 'a85decode',
+ # 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')
+ if isinstance(s, bytes_types):
+ return s
+ try:
+ return memoryview(s).tobytes()
+ except TypeError:
+ raise TypeError("argument should be a bytes-like object or ASCII "
+ "string, not %r" % s.__class__.__name__) from None
+
+
+# Base64 encoding/decoding uses binascii
+
+def b64encode(s, altchars=None):
+ """Encode the bytes-like object s using Base64 and return a bytes object.
+
+ Optional altchars should 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.
+ """
+ encoded = binascii.b2a_base64(s, newline=False)
+ if altchars is not None:
+ assert len(altchars) == 2, repr(altchars)
+ return encoded.translate(bytes.maketrans(b'+/', altchars))
+ return encoded
+
+
+def b64decode(s, altchars=None, validate=False):
+ """Decode the Base64 encoded bytes-like object or ASCII string s.
+
+ Optional altchars must be a bytes-like object or ASCII string of length 2
+ which specifies the alternative alphabet used instead of the '+' and '/'
+ characters.
+
+ The result is returned as a bytes object. A binascii.Error is raised if
+ s is incorrectly padded.
+
+ If validate is False (the default), characters that are neither in the
+ normal base-64 alphabet nor the alternative alphabet are discarded prior
+ to the padding check. If validate is True, these non-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.fullmatch(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 bytes-like object s using the standard Base64 alphabet.
+
+ The result is returned as a bytes object.
+ """
+ return b64encode(s)
+
+def standard_b64decode(s):
+ """Decode bytes encoded with the standard Base64 alphabet.
+
+ Argument s is a bytes-like object or ASCII string to decode. The result
+ is returned as a bytes object. A binascii.Error is raised if the input
+ is incorrectly padded. Characters that are not in the standard alphabet
+ are discarded prior to the padding check.
+ """
+ return b64decode(s)
+
+
+_urlsafe_encode_translation = bytes.maketrans(b'+/', b'-_')
+_urlsafe_decode_translation = bytes.maketrans(b'-_', b'+/')
+
+def urlsafe_b64encode(s):
+ """Encode bytes using the URL- and filesystem-safe Base64 alphabet.
+
+ Argument s is a bytes-like object to encode. The result is returned as a
+ bytes object. The alphabet uses '-' instead of '+' and '_' instead of
+ '/'.
+ """
+ return b64encode(s).translate(_urlsafe_encode_translation)
+
+def urlsafe_b64decode(s):
+ """Decode bytes using the URL- and filesystem-safe Base64 alphabet.
+
+ Argument s is a bytes-like object or ASCII string to decode. The result
+ is returned as a bytes object. A binascii.Error is raised if the input
+ is incorrectly padded. Characters that are not in the URL-safe base-64
+ alphabet, and are not a plus '+' or slash '/', are discarded prior to the
+ padding check.
+
+ 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 = b'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567'
+_b32tab2 = None
+_b32rev = None
+
+def b32encode(s):
+ """Encode the bytes-like object s using Base32 and return a bytes object.
+ """
+ global _b32tab2
+ # Delay the initialization of the table to not waste memory
+ # if the function is never called
+ if _b32tab2 is None:
+ b32tab = [bytes((i,)) for i in _b32alphabet]
+ _b32tab2 = [a + b for a in b32tab for b in b32tab]
+ b32tab = None
+
+ if not isinstance(s, bytes_types):
+ s = memoryview(s).tobytes()
+ leftover = len(s) % 5
+ # Pad the last quantum with zero bits if necessary
+ if leftover:
+ s = s + b'\0' * (5 - leftover) # Don't use += !
+ encoded = bytearray()
+ from_bytes = int.from_bytes
+ b32tab2 = _b32tab2
+ for i in range(0, len(s), 5):
+ c = from_bytes(s[i: i + 5], 'big')
+ encoded += (b32tab2[c >> 30] + # bits 1 - 10
+ b32tab2[(c >> 20) & 0x3ff] + # bits 11 - 20
+ b32tab2[(c >> 10) & 0x3ff] + # bits 21 - 30
+ b32tab2[c & 0x3ff] # bits 31 - 40
+ )
+ # 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 the Base32 encoded bytes-like object or ASCII string s.
+
+ 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 result is returned as a bytes object. A binascii.Error is raised if
+ the input is incorrectly padded or if there are non-alphabet
+ characters present in the input.
+ """
+ global _b32rev
+ # Delay the initialization of the table to not waste memory
+ # if the function is never called
+ if _b32rev is None:
+ _b32rev = {v: k for k, v in enumerate(_b32alphabet)}
+ s = _bytes_from_decode_data(s)
+ if len(s) % 8:
+ 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.
+ l = len(s)
+ s = s.rstrip(b'=')
+ padchars = l - len(s)
+ # Now decode the full quanta
+ decoded = bytearray()
+ b32rev = _b32rev
+ for i in range(0, len(s), 8):
+ quanta = s[i: i + 8]
+ acc = 0
+ try:
+ for c in quanta:
+ acc = (acc << 5) + b32rev[c]
+ except KeyError:
+ raise binascii.Error('Non-base32 digit found') from None
+ decoded += acc.to_bytes(5, 'big')
+ # Process the last, partial quanta
+ if l % 8 or padchars not in {0, 1, 3, 4, 6}:
+ raise binascii.Error('Incorrect padding')
+ if padchars and decoded:
+ acc <<= 5 * padchars
+ last = acc.to_bytes(5, 'big')
+ leftover = (43 - 5 * padchars) // 8 # 1: 4, 3: 3, 4: 2, 6: 1
+ decoded[-5:] = last[:leftover]
+ return bytes(decoded)
+
+
+# RFC 3548, Base 16 Alphabet specifies uppercase, but hexlify() returns
+# lowercase. The RFC also recommends against accepting input case
+# insensitively.
+def b16encode(s):
+ """Encode the bytes-like object s using Base16 and return a bytes object.
+ """
+ return binascii.hexlify(s).upper()
+
+
+def b16decode(s, casefold=False):
+ """Decode the Base16 encoded bytes-like object or ASCII string s.
+
+ Optional casefold is a flag specifying whether a lowercase alphabet is
+ acceptable as input. For security purposes, the default is False.
+
+ The result is returned as a bytes object. A binascii.Error is raised if
+ s is incorrectly padded or if there are non-alphabet characters present
+ in the input.
+ """
+ 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)
+
+#
+# Ascii85 encoding/decoding
+#
+
+_a85chars = None
+_a85chars2 = None
+_A85START = b"<~"
+_A85END = b"~>"
+
+def _85encode(b, chars, chars2, pad=False, foldnuls=False, foldspaces=False):
+ # Helper function for a85encode and b85encode
+ if not isinstance(b, bytes_types):
+ b = memoryview(b).tobytes()
+
+ padding = (-len(b)) % 4
+ if padding:
+ b = b + b'\0' * padding
+ words = struct.Struct('!%dI' % (len(b) // 4)).unpack(b)
+
+ chunks = [b'z' if foldnuls and not word else
+ b'y' if foldspaces and word == 0x20202020 else
+ (chars2[word // 614125] +
+ chars2[word // 85 % 7225] +
+ chars[word % 85])
+ for word in words]
+
+ if padding and not pad:
+ if chunks[-1] == b'z':
+ chunks[-1] = chars[0] * 5
+ chunks[-1] = chunks[-1][:-padding]
+
+ return b''.join(chunks)
+
+def a85encode(b, *, foldspaces=False, wrapcol=0, pad=False, adobe=False):
+ """Encode bytes-like object b using Ascii85 and return a bytes object.
+
+ 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 (b'\\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 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.
+ """
+ global _a85chars, _a85chars2
+ # Delay the initialization of tables to not waste memory
+ # if the function is never called
+ if _a85chars is None:
+ _a85chars = [bytes((i,)) for i in range(33, 118)]
+ _a85chars2 = [(a + b) for a in _a85chars for b in _a85chars]
+
+ result = _85encode(b, _a85chars, _a85chars2, pad, True, foldspaces)
+
+ if adobe:
+ result = _A85START + result
+ if wrapcol:
+ wrapcol = max(2 if adobe else 1, wrapcol)
+ chunks = [result[i: i + wrapcol]
+ for i in range(0, len(result), wrapcol)]
+ if adobe:
+ if len(chunks[-1]) + 2 > wrapcol:
+ chunks.append(b'')
+ result = b'\n'.join(chunks)
+ if adobe:
+ result += _A85END
+
+ return result
+
+def a85decode(b, *, foldspaces=False, adobe=False, ignorechars=b' \t\n\r\v'):
+ """Decode the Ascii85 encoded bytes-like object or ASCII string b.
+
+ 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.
+
+ The result is returned as a bytes object.
+ """
+ b = _bytes_from_decode_data(b)
+ if adobe:
+ if not b.endswith(_A85END):
+ raise ValueError(
+ "Ascii85 encoded byte sequences must end "
+ "with {!r}".format(_A85END)
+ )
+ if b.startswith(_A85START):
+ b = b[2:-2] # Strip off start/end markers
+ else:
+ b = b[:-2]
+ #
+ # We have to go through this stepwise, so as to ignore spaces and handle
+ # special short sequences
+ #
+ packI = struct.Struct('!I').pack
+ decoded = []
+ decoded_append = decoded.append
+ curr = []
+ curr_append = curr.append
+ curr_clear = curr.clear
+ for x in b + b'u' * 4:
+ if b'!'[0] <= x <= b'u'[0]:
+ curr_append(x)
+ if len(curr) == 5:
+ acc = 0
+ for x in curr:
+ acc = 85 * acc + (x - 33)
+ try:
+ decoded_append(packI(acc))
+ except struct.error:
+ raise ValueError('Ascii85 overflow') from None
+ curr_clear()
+ elif x == b'z'[0]:
+ if curr:
+ raise ValueError('z inside Ascii85 5-tuple')
+ decoded_append(b'\0\0\0\0')
+ elif foldspaces and x == b'y'[0]:
+ if curr:
+ raise ValueError('y inside Ascii85 5-tuple')
+ decoded_append(b'\x20\x20\x20\x20')
+ elif x in ignorechars:
+ # Skip whitespace
+ continue
+ else:
+ raise ValueError('Non-Ascii85 digit found: %c' % x)
+
+ result = b''.join(decoded)
+ padding = 4 - len(curr)
+ if padding:
+ # Throw away the extra padding
+ result = result[:-padding]
+ return result
+
+# The following code is originally taken (with permission) from Mercurial
+
+_b85alphabet = (b"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+ b"abcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~")
+_b85chars = None
+_b85chars2 = None
+_b85dec = None
+
+def b85encode(b, pad=False):
+ """Encode bytes-like object b in base85 format and return a bytes object.
+
+ If pad is true, the input is padded with b'\\0' so its length is a multiple of
+ 4 bytes before encoding.
+ """
+ global _b85chars, _b85chars2
+ # Delay the initialization of tables to not waste memory
+ # if the function is never called
+ if _b85chars is None:
+ _b85chars = [bytes((i,)) for i in _b85alphabet]
+ _b85chars2 = [(a + b) for a in _b85chars for b in _b85chars]
+ return _85encode(b, _b85chars, _b85chars2, pad)
+
+def b85decode(b):
+ """Decode the base85-encoded bytes-like object or ASCII string b
+
+ The result is returned as a bytes object.
+ """
+ global _b85dec
+ # Delay the initialization of tables to not waste memory
+ # if the function is never called
+ if _b85dec is None:
+ _b85dec = [None] * 256
+ for i, c in enumerate(_b85alphabet):
+ _b85dec[c] = i
+
+ b = _bytes_from_decode_data(b)
+ padding = (-len(b)) % 5
+ b = b + b'~' * padding
+ out = []
+ packI = struct.Struct('!I').pack
+ for i in range(0, len(b), 5):
+ chunk = b[i:i + 5]
+ acc = 0
+ try:
+ for c in chunk:
+ acc = acc * 85 + _b85dec[c]
+ except TypeError:
+ for j, c in enumerate(chunk):
+ if _b85dec[c] is None:
+ raise ValueError('bad base85 character at position %d'
+ % (i + j)) from None
+ raise
+ try:
+ out.append(packI(acc))
+ except struct.error:
+ raise ValueError('base85 overflow in hunk starting at byte %d'
+ % i) from None
+
+ result = b''.join(out)
+ if padding:
+ result = result[:-padding]
+ return result
+
+# 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 _input_type_check(s):
+ try:
+ m = memoryview(s)
+ except TypeError as err:
+ msg = "expected bytes-like object, not %s" % s.__class__.__name__
+ raise TypeError(msg) from err
+ if m.format not in ('c', 'b', 'B'):
+ msg = ("expected single byte elements, not %r from %s" %
+ (m.format, s.__class__.__name__))
+ raise TypeError(msg)
+ if m.ndim != 1:
+ msg = ("expected 1-D data, not %d-D data from %s" %
+ (m.ndim, s.__class__.__name__))
+ raise TypeError(msg)
+
+
+def encodebytes(s):
+ """Encode a bytestring into a bytes object containing multiple lines
+ of base-64 data."""
+ _input_type_check(s)
+ 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 decodebytes(s):
+ """Decode a bytestring of base-64 data into a bytes object."""
+ _input_type_check(s)
+ return binascii.a2b_base64(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()