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'Return a ISmallMessage representation of this object. If one is not available, L{NotImplementedError} will be raised. @since: 0.5'
def getSmallMessage(self):
raise NotImplementedError
'Return a ISmallMessage representation of this async message. @since: 0.5'
def getSmallMessage(self):
return AsyncMessageExt(**self.__dict__)
'Return a ISmallMessage representation of this acknowledge message. @since: 0.5'
def getSmallMessage(self):
return AcknowledgeMessageExt(**self.__dict__)
'Return a ISmallMessage representation of this command message. @since: 0.5'
def getSmallMessage(self):
return CommandMessageExt(**self.__dict__)
'Return a ISmallMessage representation of this error message. @since: 0.5'
def getSmallMessage(self):
raise NotImplementedError
'Adds the specified item to the end of the list. @param item: The object to add to the collection. @since: 0.4'
def addItem(self, item):
self.append(item)
'Adds the item at the specified index. @param item: The object to add to the collection. @param index: The index at which to place the item. @raise IndexError: If index is less than 0 or greater than the length of the list. @since: 0.4'
def addItemAt(self, item, index):
if ((index < 0) or (index > len(self))): raise IndexError self.insert(index, item)
'Gets the item at the specified index. @param index: The index in the list from which to retrieve the item. @type index: C{int} @param prefetch: This param is ignored and is only here as part of the interface. @raise IndexError: if `index < 0` or `index >= length` @since: 0.4'
def getItemAt(self, index, prefetch=0):
if (index < 0): raise IndexError if (index > len(self)): raise IndexError return self.__getitem__(index)
'Returns the index of the item if it is in the list such that C{getItemAt(index) == item}. @return: The index of the item or C{-1} if the item is not in the list. @since: 0.4'
def getItemIndex(self, item):
try: return self.index(item) except ValueError: return (-1)
'Removes all items from the list. @since: 0.4'
def removeAll(self):
while (len(self) > 0): self.pop()
'Removes the item at the specified index and returns it. Any items that were after this index are now one index earlier. @param index: The index from which to remove the item. @return: The item that was removed. @raise IndexError: If index is less than 0 or greater than length. @since: 0.4'
def removeItemAt(self, index):
if ((index < 0) or (index > len(self))): raise IndexError x = self[index] del self[index] return x
'Places the item at the specified index. If an item was already at that index the new item will replace it and it will be returned. @return: The item that was replaced, or C{None}. @raise IndexError: If index is less than 0 or greater than length. @since: 0.4'
def setItemAt(self, item, index):
if ((index < 0) or (index > len(self))): raise IndexError tmp = self.__getitem__(index) self.__setitem__(index, item) return tmp
'Returns an Array that is populated in the same order as the C{IList} implementation. @return: The array. @rtype: C{list}'
def toArray(self):
return self
'Clears the collection.'
def clear(self):
self.list = [] self.dict = {}
'Returns an object based on the supplied reference. The C{ref} should be an C{int}. If the reference is not found, C{None} will be returned.'
def getByReference(self, ref):
try: return self.list[ref] except IndexError: return None
'Returns a reference to C{obj} if it is contained within this index. If the object is not contained within the collection, C{-1} will be returned. @param obj: The object to find the reference to. @return: An C{int} representing the reference or C{-1} is the object is not contained within the collection.'
def getReferenceTo(self, obj):
return self.dict.get(self.func(obj), (-1))
'Appends C{obj} to this index. @note: Uniqueness is not checked @return: The reference to C{obj} in this index.'
def append(self, obj):
h = self.func(obj) self.list.append(obj) idx = (len(self.list) - 1) self.dict[h] = idx return idx
'Clears the context.'
def clear(self):
self._objects.clear() self._class_aliases = {} self._unicodes = {} self.extra = {}
'Gets an object based on a reference. @type ref: C{int} @return: The referenced object or C{None} if not found.'
def getObject(self, ref):
return self._objects.getByReference(ref)
'Gets a reference for an already referenced object. @return: The reference to the object or C{-1} if the object is not in the context.'
def getObjectReference(self, obj):
return self._objects.getReferenceTo(obj)
'Adds a reference to C{obj}. @return: Reference to C{obj}. @rtype: C{int}'
def addObject(self, obj):
return self._objects.append(obj)
'Gets a class alias based on the supplied C{klass}. If one is not found in the global context, one is created locally. If you supply a string alias and the class is not registered, L{pyamf.UnknownClassAlias} will be raised. @param klass: A class object or string alias. @return: The L{pyamf.ClassAlias} instance that des...
def getClassAlias(self, klass):
try: return self._class_aliases[klass] except KeyError: pass try: alias = self._class_aliases[klass] = pyamf.get_class_alias(klass) except pyamf.UnknownClassAlias: if isinstance(klass, python.str_types): raise alias = (util.get_class_alias(klass) or py...
'Returns the corresponding string for the supplied utf-8 encoded bytes. If there is no string object, one is created. @since: 0.6'
def getStringForBytes(self, s):
h = hash(s) u = self._unicodes.get(h, None) if (u is not None): return u u = self._unicodes[h] = s.decode('utf-8') return u
'Returns the corresponding utf-8 encoded string for a given unicode object. If there is no string, one is encoded. @since: 0.6'
def getBytesForString(self, u):
h = hash(u) s = self._unicodes.get(h, None) if (s is not None): return s s = self._unicodes[h] = u.encode('utf-8') return s
'A context factory.'
def buildContext(self):
raise NotImplementedError
'Returns a callable based on C{data}. If no such callable can be found, the default must be to return C{None}.'
def getTypeFunc(self, data):
raise NotImplementedError
'Add data for the decoder to work on.'
def send(self, data):
self.stream.append(data)
'Part of the iterator protocol.'
def next(self):
try: return self.readElement() except pyamf.EOStream: raise StopIteration
'Reads an AMF3 element from the data stream. @raise DecodeError: The ActionScript type is unsupported. @raise EOStream: No more data left to decode.'
def readElement(self):
pos = self.stream.tell() try: t = self.stream.read(1) except IOError: raise pyamf.EOStream try: func = self._func_cache[t] except KeyError: func = self.getTypeFunc(t) if (not func): raise pyamf.DecodeError(('Unsupported ActionScript type %...
'Subclasses should override this and all write[type] functions'
def _write_type(self, obj, **kwargs):
raise NotImplementedError
'Encodes an iterable. The default is to write If the iterable has an al'
def writeSequence(self, iterable):
try: alias = self.context.getClassAlias(iterable.__class__) except (AttributeError, pyamf.UnknownClassAlias): self.writeList(iterable) return if alias.external: self.writeObject(iterable) return self.writeList(iterable)
'Iterates over a generator object and encodes all that is returned.'
def writeGenerator(self, gen):
n = getattr(gen, 'next') while True: try: self.writeElement(n()) except StopIteration: break
'Returns a callable that will encode C{data} to C{self.stream}. If C{data} is unencodable, then C{None} is returned.'
def getTypeFunc(self, data):
if (data is None): return self.writeNull t = type(data) if ((t is str) or issubclass(t, str)): return self.writeBytes if ((t is unicode) or issubclass(t, unicode)): return self.writeString elif (t is bool): return self.writeBoolean elif (t is float): retur...
'Encodes C{data} to AMF. If the data is not able to be matched to an AMF type, then L{pyamf.EncodeError} will be raised.'
def writeElement(self, data):
key = type(data) func = None try: func = self._func_cache[key] except KeyError: func = self.getTypeFunc(data) if (func is None): raise pyamf.EncodeError(('Unable to encode %r (type %r)' % (data, key))) self._func_cache[key] = func func(data)...
'@param encoder: Encoder containing the stream. @type encoder: L{amf3.Encoder<pyamf.amf3.Encoder>}'
def __init__(self, encoder):
self.encoder = encoder self.stream = encoder.stream
'Writes a Boolean value. @type value: C{bool} @param value: A C{Boolean} value determining which byte is written. If the parameter is C{True}, C{1} is written; if C{False}, C{0} is written. @raise ValueError: Non-boolean value found.'
def writeBoolean(self, value):
if (not isinstance(value, bool)): raise ValueError('Non-boolean value found') if (value is True): self.stream.write_uchar(1) else: self.stream.write_uchar(0)
'Writes a byte. @type value: C{int}'
def writeByte(self, value):
self.stream.write_char(value)
'Writes an unsigned byte. @type value: C{int} @since: 0.5'
def writeUnsignedByte(self, value):
return self.stream.write_uchar(value)
'Writes an IEEE 754 double-precision (64-bit) floating point number. @type value: C{number}'
def writeDouble(self, value):
self.stream.write_double(value)
'Writes an IEEE 754 single-precision (32-bit) floating point number. @type value: C{float}'
def writeFloat(self, value):
self.stream.write_float(value)
'Writes a 32-bit signed integer. @type value: C{int}'
def writeInt(self, value):
self.stream.write_long(value)
'Writes a multibyte string to the datastream using the specified character set. @type value: C{str} @param value: The string value to be written. @type charset: C{str} @param charset: The string denoting the character set to use. Possible character set strings include C{shift-jis}, C{cn-gb}, C{iso-8859-1} and others. @...
def writeMultiByte(self, value, charset):
if (type(value) is unicode): value = value.encode(charset) self.stream.write(value)
'Writes an object to data stream in AMF serialized format. @param value: The object to be serialized.'
def writeObject(self, value):
self.encoder.writeElement(value)
'Writes a 16-bit integer. @type value: C{int} @param value: A byte value as an integer.'
def writeShort(self, value):
self.stream.write_short(value)
'Writes a 16-bit unsigned integer. @type value: C{int} @param value: A byte value as an integer. @since: 0.5'
def writeUnsignedShort(self, value):
self.stream.write_ushort(value)
'Writes a 32-bit unsigned integer. @type value: C{int} @param value: A byte value as an unsigned integer.'
def writeUnsignedInt(self, value):
self.stream.write_ulong(value)
'Writes a UTF-8 string to the data stream. The length of the UTF-8 string in bytes is written first, as a 16-bit integer, followed by the bytes representing the characters of the string. @type value: C{str} @param value: The string value to be written.'
def writeUTF(self, value):
buf = util.BufferedByteStream() buf.write_utf8_string(value) bytes = buf.getvalue() self.stream.write_ushort(len(bytes)) self.stream.write(bytes)
'Writes a UTF-8 string. Similar to L{writeUTF}, but does not prefix the string with a 16-bit length word. @type value: C{str} @param value: The string value to be written.'
def writeUTFBytes(self, value):
val = None if isinstance(value, unicode): val = value else: val = unicode(value, 'utf8') self.stream.write_utf8_string(val)
'@param decoder: AMF3 decoder containing the stream. @type decoder: L{amf3.Decoder<pyamf.amf3.Decoder>}'
def __init__(self, decoder=None):
self.decoder = decoder self.stream = decoder.stream
'Read C{Boolean}. @raise ValueError: Error reading Boolean. @rtype: C{bool} @return: A Boolean value, C{True} if the byte is nonzero, C{False} otherwise.'
def readBoolean(self):
byte = self.stream.read(1) if (byte == '\x00'): return False elif (byte == '\x01'): return True else: raise ValueError('Error reading boolean')
'Reads a signed byte. @rtype: C{int} @return: The returned value is in the range -128 to 127.'
def readByte(self):
return self.stream.read_char()
'Reads an IEEE 754 double-precision floating point number from the data stream. @rtype: C{number} @return: An IEEE 754 double-precision floating point number.'
def readDouble(self):
return self.stream.read_double()
'Reads an IEEE 754 single-precision floating point number from the data stream. @rtype: C{number} @return: An IEEE 754 single-precision floating point number.'
def readFloat(self):
return self.stream.read_float()
'Reads a signed 32-bit integer from the data stream. @rtype: C{int} @return: The returned value is in the range -2147483648 to 2147483647.'
def readInt(self):
return self.stream.read_long()
'Reads a multibyte string of specified length from the data stream using the specified character set. @type length: C{int} @param length: The number of bytes from the data stream to read. @type charset: C{str} @param charset: The string denoting the character set to use. @rtype: C{str} @return: UTF-8 encoded string.'
def readMultiByte(self, length, charset):
bytes = self.stream.read(length) return unicode(bytes, charset)
'Reads an object from the data stream. @return: The deserialized object.'
def readObject(self):
return self.decoder.readElement()
'Reads a signed 16-bit integer from the data stream. @rtype: C{uint} @return: The returned value is in the range -32768 to 32767.'
def readShort(self):
return self.stream.read_short()
'Reads an unsigned byte from the data stream. @rtype: C{uint} @return: The returned value is in the range 0 to 255.'
def readUnsignedByte(self):
return self.stream.read_uchar()
'Reads an unsigned 32-bit integer from the data stream. @rtype: C{uint} @return: The returned value is in the range 0 to 4294967295.'
def readUnsignedInt(self):
return self.stream.read_ulong()
'Reads an unsigned 16-bit integer from the data stream. @rtype: C{uint} @return: The returned value is in the range 0 to 65535.'
def readUnsignedShort(self):
return self.stream.read_ushort()
'Reads a UTF-8 string from the data stream. The string is assumed to be prefixed with an unsigned short indicating the length in bytes. @rtype: C{str} @return: A UTF-8 string produced by the byte representation of characters.'
def readUTF(self):
length = self.stream.read_ushort() return self.stream.read_utf8_string(length)
'Reads a sequence of C{length} UTF-8 bytes from the data stream and returns a string. @type length: C{int} @param length: The number of bytes from the data stream to read. @rtype: C{str} @return: A UTF-8 string produced by the byte representation of characters of specified C{length}.'
def readUTFBytes(self, length):
return self.readMultiByte(length, 'utf-8')
'Forces compression of the underlying stream.'
def compress(self):
self.compressed = True
'Clears the context.'
def clear(self):
codec.Context.clear(self) self.strings.clear() self.proxied_objects = {} self.classes = {} self.class_ref = {} self.class_idx = 0
'Gets a string based on a reference C{ref}. @param ref: The reference index. @type ref: C{str} @rtype: C{str} or C{None} @return: The referenced string.'
def getString(self, ref):
return self.strings.getByReference(ref)
'Return string reference. @type s: C{str} @param s: The referenced string. @return: The reference index to the string. @rtype: C{int} or C{None}'
def getStringReference(self, s):
return self.strings.getReferenceTo(s)
'Creates a reference to C{s}. If the reference already exists, that reference is returned. @type s: C{str} @param s: The string to be referenced. @rtype: C{int} @return: The reference index. @raise TypeError: The parameter C{s} is not of C{basestring} type.'
def addString(self, s):
if (not isinstance(s, basestring)): raise TypeError if (len(s) == 0): return (-1) return self.strings.append(s)
'Return class reference. @return: Class reference.'
def getClassByReference(self, ref):
return self.class_ref.get(ref)
'Return class reference. @return: Class reference.'
def getClass(self, klass):
return self.classes.get(klass)
'Creates a reference to C{class_def}. @param alias: C{ClassDefinition} instance.'
def addClass(self, alias, klass):
ref = self.class_idx self.class_ref[ref] = alias cd = self.classes[klass] = alias cd.reference = ref self.class_idx += 1 return ref
'Returns the unproxied version of C{proxy} as stored in the context, or unproxies the proxy and returns that \'raw\' object. @see: L{pyamf.flex.unproxy_object} @since: 0.6'
def getObjectForProxy(self, proxy):
obj = self.proxied_objects.get(id(proxy)) if (obj is None): from pyamf import flex obj = flex.unproxy_object(proxy) self.addProxyObject(obj, proxy) return obj
'Stores a reference to the unproxied and proxied versions of C{obj} for later retrieval. @since: 0.6'
def addProxyObject(self, obj, proxied):
self.proxied_objects[id(obj)] = proxied self.proxied_objects[id(proxied)] = obj
'Returns the proxied version of C{obj} as stored in the context, or creates a new proxied object and returns that. @see: L{pyamf.flex.proxy_object} @since: 0.6'
def getProxyForObject(self, obj):
proxied = self.proxied_objects.get(id(obj)) if (proxied is None): from pyamf import flex proxied = flex.proxy_object(obj) self.addProxyObject(obj, proxied) return proxied
'Decodes a proxied object from the stream. @since: 0.6'
def readProxy(self, obj):
return self.context.getObjectForProxy(obj)
'Read undefined.'
def readUndefined(self):
return pyamf.Undefined
'Read null. @return: C{None} @rtype: C{None}'
def readNull(self):
return None
'Returns C{False}. @return: C{False} @rtype: C{bool}'
def readBoolFalse(self):
return False
'Returns C{True}. @return: C{True} @rtype: C{bool}'
def readBoolTrue(self):
return True
'Read number.'
def readNumber(self):
return self.stream.read_double()
'Reads and returns an integer from the stream. @type signed: C{bool} @see: U{Parsing integers on OSFlash <http://osflash.org/amf3/parsing_integers>} for the AMF3 integer data format.'
def readInteger(self, signed=True):
return decode_int(self.stream, signed)
'Reads and returns a utf-8 encoded byte array.'
def readBytes(self):
(length, is_reference) = self._readLength() if is_reference: return self.context.getString(length) if (length == 0): return '' result = self.stream.read(length) self.context.addString(result) return result
'Reads and returns a string from the stream.'
def readString(self):
(length, is_reference) = self._readLength() if is_reference: result = self.context.getString(length) return self.context.getStringForBytes(result) if (length == 0): return '' result = self.stream.read(length) self.context.addString(result) return self.context.getStringFor...
'Read date from the stream. The timezone is ignored as the date is always in UTC.'
def readDate(self):
ref = self.readInteger(False) if ((ref & REFERENCE_BIT) == 0): return self.context.getObject((ref >> 1)) ms = self.stream.read_double() result = util.get_datetime((ms / 1000.0)) if (self.timezone_offset is not None): result += self.timezone_offset self.context.addObject(result) ...
'Reads an array from the stream. @warning: There is a very specific problem with AMF3 where the first three bytes of an encoded empty C{dict} will mirror that of an encoded C{{\'\': 1, \'2\': 2}}'
def readArray(self):
size = self.readInteger(False) if ((size & REFERENCE_BIT) == 0): return self.context.getObject((size >> 1)) size >>= 1 key = self.readBytes() if (key == ''): result = [] self.context.addObject(result) for i in xrange(size): result.append(self.readElement()...
'Reads class definition from the stream.'
def _getClassDefinition(self, ref):
is_ref = ((ref & REFERENCE_BIT) == 0) ref >>= 1 if is_ref: class_def = self.context.getClassByReference(ref) return class_def name = self.readBytes() alias = None if (name == ''): name = pyamf.ASObject try: alias = pyamf.get_class_alias(name) except pyamf....
'Reads an object from the stream.'
def readObject(self):
ref = self.readInteger(False) if ((ref & REFERENCE_BIT) == 0): obj = self.context.getObject((ref >> 1)) if (obj is None): raise pyamf.ReferenceError(('Unknown reference %d' % ((ref >> 1),))) if (self.use_proxies is True): obj = self.readProxy(obj) re...
'Reads an xml object from the stream. @return: An etree interface compatible object @see: L{xml.set_default_interface}'
def readXML(self):
ref = self.readInteger(False) if ((ref & REFERENCE_BIT) == 0): return self.context.getObject((ref >> 1)) xmlstring = self.stream.read((ref >> 1)) x = xml.fromstring(xmlstring) self.context.addObject(x) return x
'Reads a string from the data stream and converts it into an XML Tree. @see: L{readXML}'
def readXMLString(self):
return self.readXML()
'Reads a string of data from the stream. Detects if the L{ByteArray} was compressed using C{zlib}. @see: L{ByteArray} @note: This is not supported in ActionScript 1.0 and 2.0.'
def readByteArray(self):
ref = self.readInteger(False) if ((ref & REFERENCE_BIT) == 0): return self.context.getObject((ref >> 1)) buffer = self.stream.read((ref >> 1)) try: buffer = zlib.decompress(buffer) compressed = True except zlib.error: compressed = False obj = ByteArray(buffer) ...
'@see: L{codec.Encoder.getTypeFunc}'
def getTypeFunc(self, data):
t = type(data) if (t in python.int_types): return self.writeInteger elif (t is ByteArray): return self.writeByteArray elif (t is pyamf.MixedArray): return self.writeDict return codec.Encoder.getTypeFunc(self, data)
'Writes an C{pyamf.Undefined} value to the stream.'
def writeUndefined(self, n):
self.stream.write(TYPE_UNDEFINED)
'Writes a C{null} value to the stream.'
def writeNull(self, n):
self.stream.write(TYPE_NULL)
'Writes a Boolean to the stream.'
def writeBoolean(self, n):
t = TYPE_BOOL_TRUE if (n is False): t = TYPE_BOOL_FALSE self.stream.write(t)
'AMF3 integers are encoded. @param n: The integer data to be encoded to the AMF3 data stream. @type n: integer data @see: U{Parsing Integers on OSFlash <http://osflash.org/documentation/amf3/parsing_integers>} for more info.'
def _writeInteger(self, n):
self.stream.write(encode_int(n))
'Writes an integer to the stream. @type n: integer data @param n: The integer data to be encoded to the AMF3 data stream.'
def writeInteger(self, n):
if ((n < MIN_29B_INT) or (n > MAX_29B_INT)): self.writeNumber(float(n)) return self.stream.write(TYPE_INTEGER) self.stream.write(encode_int(n))
'Writes a float to the stream. @type n: C{float}'
def writeNumber(self, n):
self.stream.write(TYPE_NUMBER) self.stream.write_double(n)
'Writes a raw string to the stream. @type s: C{str} @param s: The string data to be encoded to the AMF3 data stream.'
def serialiseString(self, s):
if (type(s) is unicode): s = self.context.getBytesForString(s) self.serialiseBytes(s)
'Writes a raw string to the stream.'
def writeBytes(self, b):
self.stream.write(TYPE_STRING) self.serialiseBytes(b)
'Writes a string to the stream. It will be B{UTF-8} encoded.'
def writeString(self, s):
s = self.context.getBytesForString(s) self.writeBytes(s)
'Writes a C{datetime} instance to the stream. @type n: L{datetime} @param n: The C{Date} data to be encoded to the AMF3 data stream.'
def writeDate(self, n):
if isinstance(n, datetime.time): raise pyamf.EncodeError(('A datetime.time instance was found but AMF3 has no way to encode time objects. Please use datetime.datetime instead (got:%r)' % (n,))) self.stream.write(TYPE_DATE) ref = self.context.getO...