我们从Python开源项目中，提取了以下46个代码示例，用于说明如何使用binascii.a2b_qp()。
def write(self, data): """Takes any input data provided, decodes it as quoted-printable, and passes it on to the underlying object. :param data: quoted-printable data to decode """ # Prepend any cache info to our data. if len(self.cache) > 0: data = self.cache + data # Since the longest possible escape is 3 characters long, either in # the form '=XX' or '=\r\n', we encode up to 3 characters before the # end of the string. enc, rest = data[:-3], data[-3:] # Encode and write, if we have data. if len(enc) > 0: self.underlying.write(binascii.a2b_qp(enc)) # Save remaining in cache. self.cache = rest return len(data)
def finalize(self): """Finalize this object. This should be called when no more data should be written to the stream. This function will not raise any exceptions, but it may write more data to the underlying object if there is data remaining in the cache. If the underlying object has a `finalize()` method, this function will call it. """ # If we have a cache, write and then remove it. if len(self.cache) > 0: self.underlying.write(binascii.a2b_qp(self.cache)) self.cache = b'' # Finalize our underlying stream. if hasattr(self.underlying, 'finalize'): self.underlying.finalize()
def decodestring(s, header = 0): if a2b_qp is not None: return a2b_qp(s, header = header) from cStringIO import StringIO infp = StringIO(s) outfp = StringIO() decode(infp, outfp, header = header) return outfp.getvalue() # Other helper functions
def from_fieldstorage(cls, fs): """ Create a dict from a cgi.FieldStorage instance """ obj = cls() # fs.list can be None when there's nothing to parse for field in fs.list or (): charset = field.type_options.get('charset', 'utf8') transfer_encoding = field.headers.get('Content-Transfer-Encoding', None) supported_tranfer_encoding = { 'base64' : binascii.a2b_base64, 'quoted-printable' : binascii.a2b_qp } if PY3: # pragma: no cover if charset == 'utf8': decode = lambda b: b else: decode = lambda b: b.encode('utf8').decode(charset) else: decode = lambda b: b.decode(charset) if field.filename: field.filename = decode(field.filename) obj.add(field.name, field) else: value = field.value if transfer_encoding in supported_tranfer_encoding: if PY3: # pragma: no cover # binascii accepts bytes value = value.encode('utf8') value = supported_tranfer_encoding[transfer_encoding](value) if PY3: # pragma: no cover # binascii returns bytes value = value.decode('utf8') obj.add(field.name, decode(value)) return obj
def test_qp(self): # A test for SF bug 534347 (segfaults without the proper fix) try: binascii.a2b_qp(b"", **{1:1}) except TypeError: pass else: self.fail("binascii.a2b_qp(**{1:1}) didn't raise TypeError") self.assertEqual(binascii.a2b_qp(b"= "), b"= ") self.assertEqual(binascii.a2b_qp(b"=="), b"=") self.assertEqual(binascii.a2b_qp(b"=AX"), b"=AX") self.assertRaises(TypeError, binascii.b2a_qp, foo="bar") self.assertEqual(binascii.a2b_qp(b"=00\r\n=00"), b"\x00\r\n\x00") self.assertEqual( binascii.b2a_qp(b"\xff\r\n\xff\n\xff"), b"=FF\r\n=FF\r\n=FF") self.assertEqual( binascii.b2a_qp(b"0"*75+b"\xff\r\n\xff\r\n\xff"), b"0"*75+b"=\r\n=FF\r\n=FF\r\n=FF") self.assertEqual(binascii.b2a_qp(b'\0\n'), b'=00\n') self.assertEqual(binascii.b2a_qp(b'\0\n', quotetabs=True), b'=00\n') self.assertEqual(binascii.b2a_qp(b'foo\tbar\t\n'), b'foo\tbar=09\n') self.assertEqual(binascii.b2a_qp(b'foo\tbar\t\n', quotetabs=True), b'foo=09bar=09\n') self.assertEqual(binascii.b2a_qp(b'.'), b'=2E') self.assertEqual(binascii.b2a_qp(b'.\n'), b'=2E\n') self.assertEqual(binascii.b2a_qp(b'a.\n'), b'a.\n')
def decodestring(s, header=False): if a2b_qp is not None: return a2b_qp(s, header=header) from io import BytesIO infp = BytesIO(s) outfp = BytesIO() decode(infp, outfp, header=header) return outfp.getvalue() # Other helper functions
def test_qp(self): # A test for SF bug 534347 (segfaults without the proper fix) try: binascii.a2b_qp("", **{1:1}) except TypeError: pass else: self.fail("binascii.a2b_qp(**{1:1}) didn't raise TypeError") self.assertEqual(binascii.a2b_qp("= "), "= ") self.assertEqual(binascii.a2b_qp("=="), "=") self.assertEqual(binascii.a2b_qp("=AX"), "=AX") self.assertRaises(TypeError, binascii.b2a_qp, foo="bar") self.assertEqual(binascii.a2b_qp("=00\r\n=00"), "\x00\r\n\x00") self.assertEqual( binascii.b2a_qp("\xff\r\n\xff\n\xff"), "=FF\r\n=FF\r\n=FF" ) self.assertEqual( binascii.b2a_qp("0"*75+"\xff\r\n\xff\r\n\xff"), "0"*75+"=\r\n=FF\r\n=FF\r\n=FF" ) self.assertEqual(binascii.b2a_qp('\0\n'), '=00\n') self.assertEqual(binascii.b2a_qp('\0\n', quotetabs=True), '=00\n') self.assertEqual(binascii.b2a_qp('foo\tbar\t\n'), 'foo\tbar=09\n') self.assertEqual(binascii.b2a_qp('foo\tbar\t\n', quotetabs=True), 'foo=09bar=09\n') self.assertEqual(binascii.b2a_qp('.'), '=2E') self.assertEqual(binascii.b2a_qp('.\n'), '=2E\n') self.assertEqual(binascii.b2a_qp('a.\n'), 'a.\n')
def test_qp(self): binascii.a2b_qp(data=b"", header=False) # Keyword arguments allowed # A test for SF bug 534347 (segfaults without the proper fix) try: binascii.a2b_qp(b"", **{1:1}) except TypeError: pass else: self.fail("binascii.a2b_qp(**{1:1}) didn't raise TypeError") self.assertEqual(binascii.a2b_qp(b"= "), b"= ") self.assertEqual(binascii.a2b_qp(b"=="), b"=") self.assertEqual(binascii.a2b_qp(b"=AX"), b"=AX") self.assertRaises(TypeError, binascii.b2a_qp, foo="bar") self.assertEqual(binascii.a2b_qp(b"=00\r\n=00"), b"\x00\r\n\x00") self.assertEqual( binascii.b2a_qp(b"\xff\r\n\xff\n\xff"), b"=FF\r\n=FF\r\n=FF") self.assertEqual( binascii.b2a_qp(b"0"*75+b"\xff\r\n\xff\r\n\xff"), b"0"*75+b"=\r\n=FF\r\n=FF\r\n=FF") self.assertEqual(binascii.b2a_qp(b'\0\n'), b'=00\n') self.assertEqual(binascii.b2a_qp(b'\0\n', quotetabs=True), b'=00\n') self.assertEqual(binascii.b2a_qp(b'foo\tbar\t\n'), b'foo\tbar=09\n') self.assertEqual(binascii.b2a_qp(b'foo\tbar\t\n', quotetabs=True), b'foo=09bar=09\n') self.assertEqual(binascii.b2a_qp(b'.'), b'=2E') self.assertEqual(binascii.b2a_qp(b'.\n'), b'=2E\n') self.assertEqual(binascii.b2a_qp(b'a.\n'), b'a.\n')
def _decode_content_transfer(self, data): encoding = self.headers[CONTENT_TRANSFER_ENCODING].lower() if encoding == 'base64': return base64.b64decode(data) elif encoding == 'quoted-printable': return binascii.a2b_qp(data) elif encoding == 'binary': return data else: raise RuntimeError('unknown content transfer encoding: {}' ''.format(encoding))
def decode(input, output, header = 0): """Read 'input', apply quoted-printable decoding, and write to 'output'. 'input' and 'output' are files with readline() and write() methods. If 'header' is true, decode underscore as space (per RFC 1522).""" if a2b_qp is not None: data = input.read() odata = a2b_qp(data, header = header) output.write(odata) return new = '' while 1: line = input.readline() if not line: break i, n = 0, len(line) if n > 0 and line[n-1] == '\n': partial = 0; n = n-1 # Strip trailing whitespace while n > 0 and line[n-1] in " \t\r": n = n-1 else: partial = 1 while i < n: c = line[i] if c == '_' and header: new = new + ' '; i = i+1 elif c != ESCAPE: new = new + c; i = i+1 elif i+1 == n and not partial: partial = 1; break elif i+1 < n and line[i+1] == ESCAPE: new = new + ESCAPE; i = i+2 elif i+2 < n and ishex(line[i+1]) and ishex(line[i+2]): new = new + chr(unhex(line[i+1:i+3])); i = i+3 else: # Bad escape sequence -- leave it in new = new + c; i = i+1 if not partial: output.write(new + '\n') new = '' if new: output.write(new)
def decode(input, output, header=False): """Read 'input', apply quoted-printable decoding, and write to 'output'. 'input' and 'output' are files with readline() and write() methods. If 'header' is true, decode underscore as space (per RFC 1522).""" if a2b_qp is not None: data = input.read() odata = a2b_qp(data, header=header) output.write(odata) return new = b'' while 1: line = input.readline() if not line: break i, n = 0, len(line) if n > 0 and line[n-1:n] == b'\n': partial = 0; n = n-1 # Strip trailing whitespace while n > 0 and line[n-1:n] in b" \t\r": n = n-1 else: partial = 1 while i < n: c = line[i:i+1] if c == b'_' and header: new = new + b' '; i = i+1 elif c != ESCAPE: new = new + c; i = i+1 elif i+1 == n and not partial: partial = 1; break elif i+1 < n and line[i+1] == ESCAPE: new = new + ESCAPE; i = i+2 elif i+2 < n and ishex(line[i+1:i+2]) and ishex(line[i+2:i+3]): new = new + bytes((unhex(line[i+1:i+3]),)); i = i+3 else: # Bad escape sequence -- leave it in new = new + c; i = i+1 if not partial: output.write(new + b'\n') new = b'' if new: output.write(new)
def decode(input, output, header=False): """Read 'input', apply quoted-printable decoding, and write to 'output'. 'input' and 'output' are binary file objects. If 'header' is true, decode underscore as space (per RFC 1522).""" if a2b_qp is not None: data = input.read() odata = a2b_qp(data, header=header) output.write(odata) return new = b'' while 1: line = input.readline() if not line: break i, n = 0, len(line) if n > 0 and line[n-1:n] == b'\n': partial = 0; n = n-1 # Strip trailing whitespace while n > 0 and line[n-1:n] in b" \t\r": n = n-1 else: partial = 1 while i < n: c = line[i:i+1] if c == b'_' and header: new = new + b' '; i = i+1 elif c != ESCAPE: new = new + c; i = i+1 elif i+1 == n and not partial: partial = 1; break elif i+1 < n and line[i+1:i+2] == ESCAPE: new = new + ESCAPE; i = i+2 elif i+2 < n and ishex(line[i+1:i+2]) and ishex(line[i+2:i+3]): new = new + bytes((unhex(line[i+1:i+3]),)); i = i+3 else: # Bad escape sequence -- leave it in new = new + c; i = i+1 if not partial: output.write(new + b'\n') new = b'' if new: output.write(new)
def decode(input, output, header=False): """Read 'input', apply quoted-printable decoding, and write to 'output'. 'input' and 'output' are binary file objects. If 'header' is true, decode underscore as space (per RFC 1522).""" if a2b_qp is not None: data = input.read() odata = a2b_qp(data, header=header) output.write(odata) return new = b'' while 1: line = input.readline() if not line: break i, n = 0, len(line) if n > 0 and line[n-1:n] == b'\n': partial = 0; n = n-1 # Strip trailing whitespace while n > 0 and line[n-1:n] in b" \t\r": n = n-1 else: partial = 1 while i < n: c = line[i:i+1] if c == b'_' and header: new = new + b' '; i = i+1 elif c != ESCAPE: new = new + c; i = i+1 elif i+1 == n and not partial: partial = 1; break elif i+1 < n and line[i+1] == ESCAPE: new = new + ESCAPE; i = i+2 elif i+2 < n and ishex(line[i+1:i+2]) and ishex(line[i+2:i+3]): new = new + bytes((unhex(line[i+1:i+3]),)); i = i+3 else: # Bad escape sequence -- leave it in new = new + c; i = i+1 if not partial: output.write(new + b'\n') new = b'' if new: output.write(new)
