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_generated

Data structures generated from the eo-protocol XML specification.

Warning
  • This subpackage should not be directly imported.
  • Instead, import eolib.protocol (or the top-level eolib).

Gender

Bases: IntEnum

The gender of a player

Source code in src/eolib/protocol/_generated/gender.py 
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class Gender(IntEnum, metaclass=ProtocolEnumMeta):
    """
    The gender of a player
    """
    Female = 0
    Male = 1

Female = 0 class-attribute instance-attribute

Male = 1 class-attribute instance-attribute

Emote

Bases: IntEnum

Emote that can be played over a player's head

Source code in src/eolib/protocol/_generated/emote.py 
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class Emote(IntEnum, metaclass=ProtocolEnumMeta):
    """
    Emote that can be played over a player's head
    """
    Happy = 1
    Depressed = 2
    Sad = 3
    Angry = 4
    Confused = 5
    Surprised = 6
    Hearts = 7
    Moon = 8
    Suicidal = 9
    Embarrassed = 10
    Drunk = 11
    Trade = 12
    LevelUp = 13
    Playful = 14

Happy = 1 class-attribute instance-attribute

Depressed = 2 class-attribute instance-attribute

Sad = 3 class-attribute instance-attribute

Angry = 4 class-attribute instance-attribute

Confused = 5 class-attribute instance-attribute

Surprised = 6 class-attribute instance-attribute

Hearts = 7 class-attribute instance-attribute

Moon = 8 class-attribute instance-attribute

Suicidal = 9 class-attribute instance-attribute

Embarrassed = 10 class-attribute instance-attribute

Drunk = 11 class-attribute instance-attribute

Trade = 12 class-attribute instance-attribute

LevelUp = 13 class-attribute instance-attribute

Playful = 14 class-attribute instance-attribute

Direction

Bases: IntEnum

The direction a player or NPC is facing

Source code in src/eolib/protocol/_generated/direction.py 
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class Direction(IntEnum, metaclass=ProtocolEnumMeta):
    """
    The direction a player or NPC is facing
    """
    Down = 0
    Left = 1
    Up = 2
    Right = 3

Down = 0 class-attribute instance-attribute

Left = 1 class-attribute instance-attribute

Up = 2 class-attribute instance-attribute

Right = 3 class-attribute instance-attribute

SerializationError

Bases: Exception

Represents an error in serializing a protocol data structure.

Source code in src/eolib/protocol/serialization_error.py 
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class SerializationError(Exception):
    """
    Represents an error in serializing a protocol data structure.
    """

    def __init__(self, message: str):
        """
        Constructs a SerializationError with the specified error message.

        Args:
            message (str): The error message.
        """
        super().__init__(message)

__init__(message)

Constructs a SerializationError with the specified error message.

Parameters:

Name Type Description Default
message str

The error message.

 required
Source code in src/eolib/protocol/serialization_error.py 
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def __init__(self, message: str):
    """
    Constructs a SerializationError with the specified error message.

    Args:
        message (str): The error message.
    """
    super().__init__(message)

EoWriter

Source code in src/eolib/data/eo_writer.py 
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class EoWriter:
    def __init__(self):
        self.data = bytearray()
        self._string_sanitization_mode = False

    def add_byte(self, value: int) -> None:
        """
        Adds a raw byte to the writer data.

        Args:
            value (int): The byte to add.

        Raises:
            ValueError: If the value is above `0xFF`.
        """
        self._check_number_size(value, 0xFF)
        self.data.append(value)

    def add_bytes(self, bytes: bytes) -> None:
        """
        Adds raw bytes to the writer data.

        Args:
            bytes (bytes): The bytes to add.
        """
        self.data.extend(bytes)

    def add_char(self, number: int) -> None:
        """
        Adds an encoded 1-byte integer to the writer data.

        Args:
            number (int): The number to encode and add.

        Raises:
            ValueError: If the value is not below `CHAR_MAX`.
        """
        self._check_number_size(number, CHAR_MAX - 1)
        number_bytes = encode_number(number)
        self._add_bytes_with_length(number_bytes, 1)

    def add_short(self, number: int) -> None:
        """
        Adds an encoded 2-byte integer to the writer data.

        Args:
            number (int): The number to encode and add.

        Raises:
            ValueError: If the value is not below `SHORT_MAX`.
        """
        self._check_number_size(number, SHORT_MAX - 1)
        number_bytes = encode_number(number)
        self._add_bytes_with_length(number_bytes, 2)

    def add_three(self, number: int) -> None:
        """
        Adds an encoded 3-byte integer to the writer data.

        Args:
            number (int): The number to encode and add.

        Raises:
            ValueError: If the value is not below `THREE_MAX`.
        """
        self._check_number_size(number, THREE_MAX - 1)
        number_bytes = encode_number(number)
        self._add_bytes_with_length(number_bytes, 3)

    def add_int(self, number: int) -> None:
        """
        Adds an encoded 4-byte integer to the writer data.

        Args:
            number (int): The number to encode and add.

        Raises:
            ValueError: If the value is not below `INT_MAX`.
        """
        self._check_number_size(number, INT_MAX - 1)
        number_bytes = encode_number(number)
        self._add_bytes_with_length(number_bytes, 4)

    def add_string(self, string: str) -> None:
        """
        Adds a string to the writer data.

        Args:
            string (str): The string to be added.
        """
        string_bytes = self._encode_ansi(string)
        self._sanitize_string(string_bytes)
        self.add_bytes(string_bytes)

    def add_fixed_string(self, string: str, length: int, padded: bool = False) -> None:
        """
        Adds a fixed-length string to the writer data.

        Args:
            string (str): The string to be added.
            length (int): The expected length of the string.
            padded (bool, optional): True if the string should be padded to the length with
                trailing `0xFF` bytes. Defaults to False.
        """
        self._check_string_length(string, length, padded)
        string_bytes = self._encode_ansi(string)
        self._sanitize_string(string_bytes)
        if padded:
            string_bytes = self._add_padding(string_bytes, length)
        self.add_bytes(string_bytes)

    def add_encoded_string(self, string: str) -> None:
        """
        Adds an encoded string to the writer data.

        Args:
            string (str): The string to be encoded and added.
        """
        string_bytes = self._encode_ansi(string)
        self._sanitize_string(string_bytes)
        encode_string(string_bytes)
        self.add_bytes(string_bytes)

    def add_fixed_encoded_string(self, string: str, length: int, padded: bool = False) -> None:
        """
        Adds a fixed-length encoded string to the writer data.

        Args:
            string (str): The string to be encoded and added.
            length (int): The expected length of the string.
            padded (bool, optional): True if the string should be padded to the length with
                trailing `0xFF` bytes. Defaults to False.
        """
        self._check_string_length(string, length, padded)
        string_bytes = self._encode_ansi(string)
        self._sanitize_string(string_bytes)
        if padded:
            string_bytes = self._add_padding(string_bytes, length)
        encode_string(string_bytes)
        self.add_bytes(string_bytes)

    @property
    def string_sanitization_mode(self) -> bool:
        """
        Gets the string sanitization mode for the writer.

        Returns:
            bool: True if string sanitization is enabled.
        """
        return self._string_sanitization_mode

    @string_sanitization_mode.setter
    def string_sanitization_mode(self, string_sanitization_mode: bool) -> None:
        self._string_sanitization_mode = string_sanitization_mode

    def to_bytearray(self) -> bytearray:
        """
        Gets the writer data as a byte array.

        Returns:
            bytearray: A copy of the writer data as a byte array.
        """
        return self.data.copy()

    def __len__(self) -> int:
        """
        Gets the length of the writer data.

        Returns:
            int: The length of the writer data.
        """
        return len(self.data)

    def _add_bytes_with_length(self, bytes: bytes, bytes_length: int) -> None:
        """
        Adds raw bytes with a specified length to the writer data.

        Args:
            bytes (bytes): The bytes to add.
            bytes_length (int): The number of bytes to add.
        """
        self.data.extend(bytes[:bytes_length])

    def _sanitize_string(self, bytes: bytearray) -> None:
        if self.string_sanitization_mode:
            for i in range(len(bytes)):
                if bytes[i] == 0xFF:  # 'ÿ'
                    bytes[i] = 0x79  # 'y'

    @staticmethod
    def _check_number_size(number: int, max_value: int) -> None:
        if number > max_value:
            raise ValueError(f"Value {number} exceeds maximum of {max_value}.")

    @staticmethod
    def _add_padding(bytes: bytearray, length: int) -> bytearray:
        if len(bytes) == length:
            return bytes

        result = bytearray(length)
        result[: len(bytes)] = bytes
        result[len(bytes) :] = bytearray([0xFF] * (length - len(bytes)))

        return result

    @staticmethod
    def _check_string_length(string: str, length: int, padded: bool) -> None:
        if padded:
            if length >= len(string):
                return
            raise ValueError(f'Padded string "{string}" is too large for a length of {length}.')

        if len(string) != length:
            raise ValueError(f'String "{string}" does not have expected length of {length}.')

    @staticmethod
    def _encode_ansi(string: str) -> bytearray:
        """
        Encodes string to windows-1252 bytes.

        Args:
            string (str): The string to encode.

        Returns:
            bytearray: The encoded string.
        """
        return bytearray(string, 'windows-1252', 'replace')

data = bytearray() instance-attribute

string_sanitization_mode: bool property writable

Gets the string sanitization mode for the writer.

Returns:

Name Type Description
bool bool

True if string sanitization is enabled.

__init__()

Source code in src/eolib/data/eo_writer.py 
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def __init__(self):
    self.data = bytearray()
    self._string_sanitization_mode = False

add_byte(value)

Adds a raw byte to the writer data.

Parameters:

Name Type Description Default
value int

The byte to add.

 required

Raises:

Type Description
ValueError

If the value is above 0xFF.
Source code in src/eolib/data/eo_writer.py 
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def add_byte(self, value: int) -> None:
    """
    Adds a raw byte to the writer data.

    Args:
        value (int): The byte to add.

    Raises:
        ValueError: If the value is above `0xFF`.
    """
    self._check_number_size(value, 0xFF)
    self.data.append(value)

add_bytes(bytes)

Adds raw bytes to the writer data.

Parameters:

Name Type Description Default
bytes bytes

The bytes to add.

 required
Source code in src/eolib/data/eo_writer.py 
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def add_bytes(self, bytes: bytes) -> None:
    """
    Adds raw bytes to the writer data.

    Args:
        bytes (bytes): The bytes to add.
    """
    self.data.extend(bytes)

add_char(number)

Adds an encoded 1-byte integer to the writer data.

Parameters:

Name Type Description Default
number int

The number to encode and add.

 required

Raises:

Type Description
ValueError

If the value is not below CHAR_MAX.
Source code in src/eolib/data/eo_writer.py 
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def add_char(self, number: int) -> None:
    """
    Adds an encoded 1-byte integer to the writer data.

    Args:
        number (int): The number to encode and add.

    Raises:
        ValueError: If the value is not below `CHAR_MAX`.
    """
    self._check_number_size(number, CHAR_MAX - 1)
    number_bytes = encode_number(number)
    self._add_bytes_with_length(number_bytes, 1)

add_short(number)

Adds an encoded 2-byte integer to the writer data.

Parameters:

Name Type Description Default
number int

The number to encode and add.

 required

Raises:

Type Description
ValueError

If the value is not below SHORT_MAX.
Source code in src/eolib/data/eo_writer.py 
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def add_short(self, number: int) -> None:
    """
    Adds an encoded 2-byte integer to the writer data.

    Args:
        number (int): The number to encode and add.

    Raises:
        ValueError: If the value is not below `SHORT_MAX`.
    """
    self._check_number_size(number, SHORT_MAX - 1)
    number_bytes = encode_number(number)
    self._add_bytes_with_length(number_bytes, 2)

add_three(number)

Adds an encoded 3-byte integer to the writer data.

Parameters:

Name Type Description Default
number int

The number to encode and add.

 required

Raises:

Type Description
ValueError

If the value is not below THREE_MAX.
Source code in src/eolib/data/eo_writer.py 
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def add_three(self, number: int) -> None:
    """
    Adds an encoded 3-byte integer to the writer data.

    Args:
        number (int): The number to encode and add.

    Raises:
        ValueError: If the value is not below `THREE_MAX`.
    """
    self._check_number_size(number, THREE_MAX - 1)
    number_bytes = encode_number(number)
    self._add_bytes_with_length(number_bytes, 3)

add_int(number)

Adds an encoded 4-byte integer to the writer data.

Parameters:

Name Type Description Default
number int

The number to encode and add.

 required

Raises:

Type Description
ValueError

If the value is not below INT_MAX.
Source code in src/eolib/data/eo_writer.py 
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def add_int(self, number: int) -> None:
    """
    Adds an encoded 4-byte integer to the writer data.

    Args:
        number (int): The number to encode and add.

    Raises:
        ValueError: If the value is not below `INT_MAX`.
    """
    self._check_number_size(number, INT_MAX - 1)
    number_bytes = encode_number(number)
    self._add_bytes_with_length(number_bytes, 4)

add_string(string)

Adds a string to the writer data.

Parameters:

Name Type Description Default
string str

The string to be added.

 required
Source code in src/eolib/data/eo_writer.py 
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def add_string(self, string: str) -> None:
    """
    Adds a string to the writer data.

    Args:
        string (str): The string to be added.
    """
    string_bytes = self._encode_ansi(string)
    self._sanitize_string(string_bytes)
    self.add_bytes(string_bytes)

add_fixed_string(string, length, padded=False)

Adds a fixed-length string to the writer data.

Parameters:

Name Type Description Default
string str

The string to be added.

 required
length int

The expected length of the string.

 required
padded bool

True if the string should be padded to the length with trailing 0xFF bytes. Defaults to False.

 False
Source code in src/eolib/data/eo_writer.py 
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def add_fixed_string(self, string: str, length: int, padded: bool = False) -> None:
    """
    Adds a fixed-length string to the writer data.

    Args:
        string (str): The string to be added.
        length (int): The expected length of the string.
        padded (bool, optional): True if the string should be padded to the length with
            trailing `0xFF` bytes. Defaults to False.
    """
    self._check_string_length(string, length, padded)
    string_bytes = self._encode_ansi(string)
    self._sanitize_string(string_bytes)
    if padded:
        string_bytes = self._add_padding(string_bytes, length)
    self.add_bytes(string_bytes)

add_encoded_string(string)

Adds an encoded string to the writer data.

Parameters:

Name Type Description Default
string str

The string to be encoded and added.

 required
Source code in src/eolib/data/eo_writer.py 
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def add_encoded_string(self, string: str) -> None:
    """
    Adds an encoded string to the writer data.

    Args:
        string (str): The string to be encoded and added.
    """
    string_bytes = self._encode_ansi(string)
    self._sanitize_string(string_bytes)
    encode_string(string_bytes)
    self.add_bytes(string_bytes)

add_fixed_encoded_string(string, length, padded=False)

Adds a fixed-length encoded string to the writer data.

Parameters:

Name Type Description Default
string str

The string to be encoded and added.

 required
length int

The expected length of the string.

 required
padded bool

True if the string should be padded to the length with trailing 0xFF bytes. Defaults to False.

 False
Source code in src/eolib/data/eo_writer.py 
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def add_fixed_encoded_string(self, string: str, length: int, padded: bool = False) -> None:
    """
    Adds a fixed-length encoded string to the writer data.

    Args:
        string (str): The string to be encoded and added.
        length (int): The expected length of the string.
        padded (bool, optional): True if the string should be padded to the length with
            trailing `0xFF` bytes. Defaults to False.
    """
    self._check_string_length(string, length, padded)
    string_bytes = self._encode_ansi(string)
    self._sanitize_string(string_bytes)
    if padded:
        string_bytes = self._add_padding(string_bytes, length)
    encode_string(string_bytes)
    self.add_bytes(string_bytes)

to_bytearray()

Gets the writer data as a byte array.

Returns:

Name Type Description
bytearray bytearray

A copy of the writer data as a byte array.
Source code in src/eolib/data/eo_writer.py 
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def to_bytearray(self) -> bytearray:
    """
    Gets the writer data as a byte array.

    Returns:
        bytearray: A copy of the writer data as a byte array.
    """
    return self.data.copy()

__len__()

Gets the length of the writer data.

Returns:

Name Type Description
int int

The length of the writer data.
Source code in src/eolib/data/eo_writer.py 
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def __len__(self) -> int:
    """
    Gets the length of the writer data.

    Returns:
        int: The length of the writer data.
    """
    return len(self.data)

EoReader

Bases: object

A class for reading EO data from a sequence of bytes.

EoReader features a chunked reading mode, which is important for accurate emulation of the official game client.

See documentation for chunked reading: https://github.com/Cirras/eo-protocol/blob/master/docs/chunks.md

Source code in src/eolib/data/eo_reader.py 
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class EoReader(object):
    """
    A class for reading EO data from a sequence of bytes.

    `EoReader` features a chunked reading mode, which is important for accurate emulation of
    the official game client.

    See documentation for chunked reading:
    https://github.com/Cirras/eo-protocol/blob/master/docs/chunks.md
    """

    _data: memoryview
    _position: int
    _chunked_reading_mode: bool
    _chunk_start: int
    _next_break: int

    def __init__(self, data: bytes):
        """
        Creates a new `EoReader` instance for the specified data.

        Args:
            data (bytes): The byte array containing the input data.
        """
        self._data = memoryview(data)
        self._position = 0
        self._chunked_reading_mode = False
        self._chunk_start = 0
        self._next_break = -1

    def slice(self, index: Optional[int] = None, length: Optional[int] = None) -> "EoReader":
        """
        Creates a new `EoReader` whose input data is a shared subsequence of this reader's
        data.

        The input data of the new reader will start at position `index` in this reader and contain
        up to `length` bytes. The two reader's position and chunked reading mode will be
        independent.

        The new reader's position will be zero, and its chunked reading mode will be false.

        Args:
            index (int, optional): The position in this reader at which the data of the new reader
                will start; must be non-negative. Defaults to the current reader position.
            length (int, optional): The length of the shared subsequence of data to supply to the
                new reader; must be non-negative. Defaults to the length of the remaining data
                starting from `index`.

        Returns:
            EoReader: The new reader.

        Raises:
            ValueError: If `index` or `length` is negative.
        """
        if index is None:
            index = self.position
        if length is None:
            length = max(0, len(self._data) - index)

        if index < 0:
            raise ValueError(f"negative index: {index}")

        if length < 0:
            raise ValueError(f"negative length: {length}")

        begin = max(0, min(len(self._data), index))
        end = begin + min(len(self._data) - begin, length)

        return EoReader(self._data[begin:end])

    def get_byte(self) -> int:
        """
        Reads a raw byte from the input data.

        Returns:
            int: A raw byte.
        """
        return self._read_byte()

    def get_bytes(self, length: int) -> bytearray:
        """
        Reads an array of raw bytes from the input data.

        Args:
            length (int): The number of bytes to read.

        Returns:
            bytearray: An array of raw bytes.
        """
        return self._read_bytes(length)

    def get_char(self) -> int:
        """
        Reads an encoded 1-byte integer from the input data.

        Returns:
            int: A decoded 1-byte integer.
        """
        return decode_number(self._read_bytes(1))

    def get_short(self) -> int:
        """
        Reads an encoded 2-byte integer from the input data.

        Returns:
            int: A decoded 2-byte integer.
        """
        return decode_number(self._read_bytes(2))

    def get_three(self) -> int:
        """
        Reads an encoded 3-byte integer from the input data.

        Returns:
            int: A decoded 3-byte integer.
        """
        return decode_number(self._read_bytes(3))

    def get_int(self) -> int:
        """
        Reads an encoded 4-byte integer from the input data.

        Returns:
            int: A decoded 4-byte integer.
        """
        return decode_number(self._read_bytes(4))

    def get_string(self) -> str:
        """
        Reads a string from the input data.

        Returns:
            str: A string.
        """
        string_bytes = self._read_bytes(self.remaining)
        return self._decode_ansi(string_bytes)

    def get_fixed_string(self, length: int, padded: bool = False) -> str:
        """
        Reads a string with a fixed length from the input data.

        Args:
            length (int): The length of the string.
            padded (bool, optional): True if the string is padded with trailing `0xFF` bytes.

        Returns:
            str: A decoded string.

        Raises:
            ValueError: If the length is negative.
        """
        if length < 0:
            raise ValueError("Negative length")
        bytes_ = self._read_bytes(length)
        if padded:
            bytes_ = self._remove_padding(bytes_)
        return self._decode_ansi(bytes_)

    def get_encoded_string(self) -> str:
        """
        Reads an encoded string from the input data.

        Returns:
            str: A decoded string.
        """
        bytes_ = self._read_bytes(self.remaining)
        decode_string(bytes_)
        return self._decode_ansi(bytes_)

    def get_fixed_encoded_string(self, length: int, padded: bool = False) -> str:
        """
        Reads an encoded string with a fixed length from the input data.

        Args:
            length (int): The length of the string.
            padded (bool, optional): True if the string is padded with trailing `0xFF` bytes.

        Returns:
            str: A decoded string.

        Raises:
            ValueError: If the length is negative.
        """
        if length < 0:
            raise ValueError("Negative length")
        bytes_ = self._read_bytes(length)
        decode_string(bytes_)
        if padded:
            bytes_ = self._remove_padding(bytes_)
        return self._decode_ansi(bytes_)

    @property
    def chunked_reading_mode(self) -> bool:
        """
        bool: Gets or sets the chunked reading mode for the reader.

        In chunked reading mode:
        - The reader will treat `0xFF` bytes as the end of the current chunk.
        - `next_chunk()` can be called to move to the next chunk.
        """
        return self._chunked_reading_mode

    @chunked_reading_mode.setter
    def chunked_reading_mode(self, chunked_reading_mode: bool) -> None:
        self._chunked_reading_mode = chunked_reading_mode
        if self._next_break == -1:
            self._next_break = self._find_next_break_index()

    @property
    def remaining(self) -> int:
        """
        int: If chunked reading mode is enabled, gets the number of bytes remaining in the current
            chunk. Otherwise, gets the total number of bytes remaining in the input data.
        """
        if self.chunked_reading_mode:
            return self._next_break - min(self.position, self._next_break)
        else:
            return len(self._data) - self.position

    def next_chunk(self) -> None:
        """
        Moves the reader position to the start of the next chunk in the input data.

        Raises:
            RuntimeError: If not in chunked reading mode.
        """
        if not self.chunked_reading_mode:
            raise RuntimeError("Not in chunked reading mode.")

        self._position = self._next_break
        if self._position < len(self._data):
            # Skip the break byte
            self._position += 1

        self._chunk_start = self._position
        self._next_break = self._find_next_break_index()

    @property
    def position(self) -> int:
        """
        int: Gets the current position in the input data.
        """
        return self._position

    def _read_byte(self) -> int:
        """
        Reads a raw byte from the input data.

        Returns:
            int: A raw byte.
        """
        if self.remaining > 0:
            byte = self._data[self._position]
            self._position += 1
            return byte
        return 0

    def _read_bytes(self, length) -> bytearray:
        """
        Reads an array of raw bytes from the input data.

        Args:
            length (int): The number of bytes to read.

        Returns:
            bytearray: An array of raw bytes.
        """
        length = min(length, self.remaining)

        result = bytearray(self._data[self._position : self._position + length])
        self._position += length

        return result

    def _find_next_break_index(self) -> int:
        """
        Finds the index of the next break byte (0xFF) in the input data.

        Returns:
            int: The index of the next break byte, or the length of the data if not found.
        """
        for i in range(self._chunk_start, len(self._data)):
            if self._data[i] == 0xFF:
                return i
        return len(self._data)

    @staticmethod
    def _remove_padding(array: bytearray) -> bytearray:
        """
        Removes padding (trailing 0xFF bytes) from a sequence of bytes.

        Args:
            array (bytearray): The sequence of bytes.

        Returns:
            bytearray: The bytes without padding.
        """
        padding_start = array.find(bytes([0xFF]))
        if padding_start != -1:
            return array[:padding_start]
        return array

    @staticmethod
    def _decode_ansi(bytes: bytearray) -> str:
        """
        Decodes windows-1252 bytes to a string.

        Args:
            bytes (bytearray): The sequence of bytes to decode.

        Returns:
            str: The decoded string.
        """
        return bytes.decode('windows-1252', 'replace')

chunked_reading_mode: bool property writable

bool: Gets or sets the chunked reading mode for the reader.

In chunked reading mode: - The reader will treat 0xFF bytes as the end of the current chunk. - next_chunk() can be called to move to the next chunk.

remaining: int property

If chunked reading mode is enabled, gets the number of bytes remaining in the current

chunk. Otherwise, gets the total number of bytes remaining in the input data.

position: int property

int: Gets the current position in the input data.

__init__(data)

Creates a new EoReader instance for the specified data.

Parameters:

Name Type Description Default
data bytes

The byte array containing the input data.

 required
Source code in src/eolib/data/eo_reader.py 
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def __init__(self, data: bytes):
    """
    Creates a new `EoReader` instance for the specified data.

    Args:
        data (bytes): The byte array containing the input data.
    """
    self._data = memoryview(data)
    self._position = 0
    self._chunked_reading_mode = False
    self._chunk_start = 0
    self._next_break = -1

slice(index=None, length=None)

Creates a new EoReader whose input data is a shared subsequence of this reader's data.

The input data of the new reader will start at position index in this reader and contain up to length bytes. The two reader's position and chunked reading mode will be independent.

The new reader's position will be zero, and its chunked reading mode will be false.

Parameters:

Name Type Description Default
index int

The position in this reader at which the data of the new reader will start; must be non-negative. Defaults to the current reader position.

 None
length int

The length of the shared subsequence of data to supply to the new reader; must be non-negative. Defaults to the length of the remaining data starting from index.

 None

Returns:

Name Type Description
EoReader EoReader

The new reader.

Raises:

Type Description
ValueError

If index or length is negative.
Source code in src/eolib/data/eo_reader.py 
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def slice(self, index: Optional[int] = None, length: Optional[int] = None) -> "EoReader":
    """
    Creates a new `EoReader` whose input data is a shared subsequence of this reader's
    data.

    The input data of the new reader will start at position `index` in this reader and contain
    up to `length` bytes. The two reader's position and chunked reading mode will be
    independent.

    The new reader's position will be zero, and its chunked reading mode will be false.

    Args:
        index (int, optional): The position in this reader at which the data of the new reader
            will start; must be non-negative. Defaults to the current reader position.
        length (int, optional): The length of the shared subsequence of data to supply to the
            new reader; must be non-negative. Defaults to the length of the remaining data
            starting from `index`.

    Returns:
        EoReader: The new reader.

    Raises:
        ValueError: If `index` or `length` is negative.
    """
    if index is None:
        index = self.position
    if length is None:
        length = max(0, len(self._data) - index)

    if index < 0:
        raise ValueError(f"negative index: {index}")

    if length < 0:
        raise ValueError(f"negative length: {length}")

    begin = max(0, min(len(self._data), index))
    end = begin + min(len(self._data) - begin, length)

    return EoReader(self._data[begin:end])

get_byte()

Reads a raw byte from the input data.

Returns:

Name Type Description
int int

A raw byte.
Source code in src/eolib/data/eo_reader.py 
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def get_byte(self) -> int:
    """
    Reads a raw byte from the input data.

    Returns:
        int: A raw byte.
    """
    return self._read_byte()

get_bytes(length)

Reads an array of raw bytes from the input data.

Parameters:

Name Type Description Default
length int

The number of bytes to read.

 required

Returns:

Name Type Description
bytearray bytearray

An array of raw bytes.
Source code in src/eolib/data/eo_reader.py 
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def get_bytes(self, length: int) -> bytearray:
    """
    Reads an array of raw bytes from the input data.

    Args:
        length (int): The number of bytes to read.

    Returns:
        bytearray: An array of raw bytes.
    """
    return self._read_bytes(length)

get_char()

Reads an encoded 1-byte integer from the input data.

Returns:

Name Type Description
int int

A decoded 1-byte integer.
Source code in src/eolib/data/eo_reader.py 
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def get_char(self) -> int:
    """
    Reads an encoded 1-byte integer from the input data.

    Returns:
        int: A decoded 1-byte integer.
    """
    return decode_number(self._read_bytes(1))

get_short()

Reads an encoded 2-byte integer from the input data.

Returns:

Name Type Description
int int

A decoded 2-byte integer.
Source code in src/eolib/data/eo_reader.py 
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def get_short(self) -> int:
    """
    Reads an encoded 2-byte integer from the input data.

    Returns:
        int: A decoded 2-byte integer.
    """
    return decode_number(self._read_bytes(2))

get_three()

Reads an encoded 3-byte integer from the input data.

Returns:

Name Type Description
int int

A decoded 3-byte integer.
Source code in src/eolib/data/eo_reader.py 
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def get_three(self) -> int:
    """
    Reads an encoded 3-byte integer from the input data.

    Returns:
        int: A decoded 3-byte integer.
    """
    return decode_number(self._read_bytes(3))

get_int()

Reads an encoded 4-byte integer from the input data.

Returns:

Name Type Description
int int

A decoded 4-byte integer.
Source code in src/eolib/data/eo_reader.py 
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def get_int(self) -> int:
    """
    Reads an encoded 4-byte integer from the input data.

    Returns:
        int: A decoded 4-byte integer.
    """
    return decode_number(self._read_bytes(4))

get_string()

Reads a string from the input data.

Returns:

Name Type Description
str str

A string.
Source code in src/eolib/data/eo_reader.py 
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def get_string(self) -> str:
    """
    Reads a string from the input data.

    Returns:
        str: A string.
    """
    string_bytes = self._read_bytes(self.remaining)
    return self._decode_ansi(string_bytes)

get_fixed_string(length, padded=False)

Reads a string with a fixed length from the input data.

Parameters:

Name Type Description Default
length int

The length of the string.

 required
padded bool

True if the string is padded with trailing 0xFF bytes.

 False

Returns:

Name Type Description
str str

A decoded string.

Raises:

Type Description
ValueError

If the length is negative.
Source code in src/eolib/data/eo_reader.py 
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def get_fixed_string(self, length: int, padded: bool = False) -> str:
    """
    Reads a string with a fixed length from the input data.

    Args:
        length (int): The length of the string.
        padded (bool, optional): True if the string is padded with trailing `0xFF` bytes.

    Returns:
        str: A decoded string.

    Raises:
        ValueError: If the length is negative.
    """
    if length < 0:
        raise ValueError("Negative length")
    bytes_ = self._read_bytes(length)
    if padded:
        bytes_ = self._remove_padding(bytes_)
    return self._decode_ansi(bytes_)

get_encoded_string()

Reads an encoded string from the input data.

Returns:

Name Type Description
str str

A decoded string.
Source code in src/eolib/data/eo_reader.py 
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def get_encoded_string(self) -> str:
    """
    Reads an encoded string from the input data.

    Returns:
        str: A decoded string.
    """
    bytes_ = self._read_bytes(self.remaining)
    decode_string(bytes_)
    return self._decode_ansi(bytes_)

get_fixed_encoded_string(length, padded=False)

Reads an encoded string with a fixed length from the input data.

Parameters:

Name Type Description Default
length int

The length of the string.

 required
padded bool

True if the string is padded with trailing 0xFF bytes.

 False

Returns:

Name Type Description
str str

A decoded string.

Raises:

Type Description
ValueError

If the length is negative.
Source code in src/eolib/data/eo_reader.py 
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def get_fixed_encoded_string(self, length: int, padded: bool = False) -> str:
    """
    Reads an encoded string with a fixed length from the input data.

    Args:
        length (int): The length of the string.
        padded (bool, optional): True if the string is padded with trailing `0xFF` bytes.

    Returns:
        str: A decoded string.

    Raises:
        ValueError: If the length is negative.
    """
    if length < 0:
        raise ValueError("Negative length")
    bytes_ = self._read_bytes(length)
    decode_string(bytes_)
    if padded:
        bytes_ = self._remove_padding(bytes_)
    return self._decode_ansi(bytes_)

next_chunk()

Moves the reader position to the start of the next chunk in the input data.

Raises:

Type Description
RuntimeError

If not in chunked reading mode.
Source code in src/eolib/data/eo_reader.py 
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def next_chunk(self) -> None:
    """
    Moves the reader position to the start of the next chunk in the input data.

    Raises:
        RuntimeError: If not in chunked reading mode.
    """
    if not self.chunked_reading_mode:
        raise RuntimeError("Not in chunked reading mode.")

    self._position = self._next_break
    if self._position < len(self._data):
        # Skip the break byte
        self._position += 1

    self._chunk_start = self._position
    self._next_break = self._find_next_break_index()

Coords

Map coordinates

Source code in src/eolib/protocol/_generated/coords.py 
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class Coords:
    """
    Map coordinates
    """
    _byte_size: int = 0
    _x: int = None # type: ignore [assignment]
    _y: int = None # type: ignore [assignment]

    @property
    def byte_size(self) -> int:
        """
        Returns the size of the data that this was deserialized from.

        Returns:
            int: The size of the data that this was deserialized from.
        """
        return self._byte_size

    @property
    def x(self) -> int:
        """
        Note:
          - Value range is 0-252.
        """
        return self._x

    @x.setter
    def x(self, x: int) -> None:
        """
        Note:
          - Value range is 0-252.
        """
        self._x = x

    @property
    def y(self) -> int:
        """
        Note:
          - Value range is 0-252.
        """
        return self._y

    @y.setter
    def y(self, y: int) -> None:
        """
        Note:
          - Value range is 0-252.
        """
        self._y = y

    @staticmethod
    def serialize(writer: EoWriter, data: "Coords") -> None:
        """
        Serializes an instance of `Coords` to the provided `EoWriter`.

        Args:
            writer (EoWriter): The writer that the data will be serialized to.
            data (Coords): The data to serialize.
        """
        if data._x is None:
            raise SerializationError("x must be provided.")
        writer.add_char(data._x)
        if data._y is None:
            raise SerializationError("y must be provided.")
        writer.add_char(data._y)

    @staticmethod
    def deserialize(reader: EoReader) -> "Coords":
        """
        Deserializes an instance of `Coords` from the provided `EoReader`.

        Args:
            reader (EoReader): The writer that the data will be serialized to.

        Returns:
            Coords: The data to serialize.
        """
        data: Coords = Coords()
        old_chunked_reading_mode: bool = reader.chunked_reading_mode
        try:
            reader_start_position: int = reader.position
            data._x = reader.get_char()
            data._y = reader.get_char()
            data._byte_size = reader.position - reader_start_position
            return data
        finally:
            reader.chunked_reading_mode = old_chunked_reading_mode

    def __repr__(self):
        return f"Coords(byte_size={repr(self._byte_size)}, x={repr(self._x)}, y={repr(self._y)})"

byte_size: int property

Returns the size of the data that this was deserialized from.

Returns:

Name Type Description
int int

The size of the data that this was deserialized from.

x: int property writable

Note
  • Value range is 0-252.

y: int property writable

Note
  • Value range is 0-252.

serialize(writer, data) staticmethod

Serializes an instance of Coords to the provided EoWriter.

Parameters:

Name Type Description Default
writer EoWriter

The writer that the data will be serialized to.

 required
data Coords

The data to serialize.

 required
Source code in src/eolib/protocol/_generated/coords.py 
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@staticmethod
def serialize(writer: EoWriter, data: "Coords") -> None:
    """
    Serializes an instance of `Coords` to the provided `EoWriter`.

    Args:
        writer (EoWriter): The writer that the data will be serialized to.
        data (Coords): The data to serialize.
    """
    if data._x is None:
        raise SerializationError("x must be provided.")
    writer.add_char(data._x)
    if data._y is None:
        raise SerializationError("y must be provided.")
    writer.add_char(data._y)

deserialize(reader) staticmethod

Deserializes an instance of Coords from the provided EoReader.

Parameters:

Name Type Description Default
reader EoReader

The writer that the data will be serialized to.

 required

Returns:

Name Type Description
Coords Coords

The data to serialize.
Source code in src/eolib/protocol/_generated/coords.py 
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@staticmethod
def deserialize(reader: EoReader) -> "Coords":
    """
    Deserializes an instance of `Coords` from the provided `EoReader`.

    Args:
        reader (EoReader): The writer that the data will be serialized to.

    Returns:
        Coords: The data to serialize.
    """
    data: Coords = Coords()
    old_chunked_reading_mode: bool = reader.chunked_reading_mode
    try:
        reader_start_position: int = reader.position
        data._x = reader.get_char()
        data._y = reader.get_char()
        data._byte_size = reader.position - reader_start_position
        return data
    finally:
        reader.chunked_reading_mode = old_chunked_reading_mode

ProtocolEnumMeta

Bases: EnumMeta

Source code in src/eolib/protocol/protocol_enum_meta.py 
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class ProtocolEnumMeta(EnumMeta):
    def __call__(cls, value, names=None, *, module=None, qualname=None, type=None, start=1):
        if names is not None:
            return super().__call__(
                value, names=names, module=module, qualname=qualname, type=type, start=start
            )
        try:
            return super().__call__(
                value, names=names, module=module, qualname=qualname, type=type, start=start
            )
        except ValueError:
            unrecognized = int.__new__(cls, value)
            unrecognized._name_ = f"Unrecognized({int(value)})"
            unrecognized._value_ = value
            return unrecognized

__call__(value, names=None, *, module=None, qualname=None, type=None, start=1)

Source code in src/eolib/protocol/protocol_enum_meta.py 
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def __call__(cls, value, names=None, *, module=None, qualname=None, type=None, start=1):
    if names is not None:
        return super().__call__(
            value, names=names, module=module, qualname=qualname, type=type, start=start
        )
    try:
        return super().__call__(
            value, names=names, module=module, qualname=qualname, type=type, start=start
        )
    except ValueError:
        unrecognized = int.__new__(cls, value)
        unrecognized._name_ = f"Unrecognized({int(value)})"
        unrecognized._value_ = value
        return unrecognized

AdminLevel

Bases: IntEnum

The admin level of a player

Source code in src/eolib/protocol/_generated/admin_level.py 
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class AdminLevel(IntEnum, metaclass=ProtocolEnumMeta):
    """
    The admin level of a player
    """
    Player = 0
    Spy = 1
    LightGuide = 2
    Guardian = 3
    GameMaster = 4
    HighGameMaster = 5

Player = 0 class-attribute instance-attribute

Spy = 1 class-attribute instance-attribute

LightGuide = 2 class-attribute instance-attribute

Guardian = 3 class-attribute instance-attribute

GameMaster = 4 class-attribute instance-attribute

HighGameMaster = 5 class-attribute instance-attribute