from struct import * class BinaryStream: def __init__(self, base_stream): self.base_stream = base_stream def readByte(self): return self.base_stream.read(1) def readBytes(self, length): return self.base_stream.read(length) def readChar(self): return self.unpack('b') def readUChar(self): return self.unpack('B') def readBool(self): return self.unpack('?') def readInt16(self): return self.unpack('h', 2) def readUInt16(self): return self.unpack('H', 2) def readInt32(self): return self.unpack('i', 4) def readUInt32(self): return self.unpack('I', 4) def readInt64(self): return self.unpack('q', 8) def readUInt64(self): return self.unpack('Q', 8) def readFloat(self): return self.unpack('f', 4) def readDouble(self): return self.unpack('d', 8) def readString(self): length = self.readUInt16() return self.unpack(str(length) + 's', length) def writeBytes(self, value): self.base_stream.write(value) def writeChar(self, value): self.pack('c', value) def writeUChar(self, value): self.pack('C', value) def writeBool(self, value): self.pack('?', value) def writeInt16(self, value): self.pack('h', value) def writeUInt16(self, value): self.pack('H', value) def writeInt32(self, value): self.pack('i', value) def writeUInt32(self, value): self.pack('I', value) def writeInt64(self, value): self.pack('q', value) def writeUInt64(self, value): self.pack('Q', value) def writeFloat(self, value): self.pack('f', value) def writeDouble(self, value): self.pack('d', value) def writeString(self, value): length = len(value) self.writeUInt16(length) self.pack(str(length) + 's', value) def pack(self, fmt, data): return self.writeBytes(pack(fmt, data)) def unpack(self, fmt, length = 1): return unpack(fmt, self.readBytes(length))[0]