cp2077_extractor.cr2w.io

File IO operations.

Exceptions:

CNameError

Error raised when an invalid name is read.

Classes:

ParsingData(names_list, chunks, buffers)

Working data for parsing CR2W/W2RC files.

Functions:

parse_cr2w_buffer(fp[, filename])	Parse a CR2W/W2RC file from an opened file.
parse_cr2w_file(filename)	Parse a CR2W/W2RC file from the given path.
read_buffer(fp, info)	Read a buffer from the CR2W/W2RC file.
read_c_name(fp, names_list)	Read a name from the open file.
read_chunk(fp, chunk_index, file_info)	Read an export chunk from the file.
read_file_info(fp)	Read the file header and metadata.
read_struct(fp, struct_type)	Read the given struct from the open file.
read_tables(fp, table_struct, header)	Read a tables of the given type in from the opened file.

exception CNameError

Bases: Exception

Error raised when an invalid name is read.

namedtuple ParsingData(names_list, chunks, buffers)

Bases: NamedTuple

Working data for parsing CR2W/W2RC files.

Fields

0.  names_list (list[bytes]) – Name lookup table for the file.

1.  chunks (list[tuple[bytes, bytes]]) – List of tuples of the raw chunk data and the chunk’s datatype

2.  buffers (list[tuple[bytes, CR2WBufferInfo]]) – List of tuples of the raw buffer data and the buffer metadata

__repr__()

Return a nicely formatted representation string

parse_cr2w_buffer(fp, filename=None)

Parse a CR2W/W2RC file from an opened file.

Parameters

• fp (IO)

• filename (Union[str, Path, PathLike, None]) – Optionally, the path of the opened file for inclusion in metadata. Default None.

Return type

CR2WFile

parse_cr2w_file(filename)

Parse a CR2W/W2RC file from the given path.

Parameters

filename (Union[str, Path, PathLike])

Return type

CR2WFile

read_buffer(fp, info)

Read a buffer from the CR2W/W2RC file.

Parameters

• fp (IO)

• info (CR2WBufferInfo) – Metadata about the buffer

Return type

bytes

read_c_name(fp, names_list)

Read a name from the open file.

Reads the ordinal of the name, and looks up the name string in names_list.

Parameters

• fp (IO)

• names_list (list[bytes]) – Ordered list of names used in the file, for lookups.

Return type

bytes

read_chunk(fp, chunk_index, file_info)

Read an export chunk from the file.

Parameters

• fp (IO)

• chunk_index (int)

• file_info (CR2WFileInfo)

Return type

tuple[bytes, bytes]

Returns

A tuple of the raw chunk data and the chunk’s datatype.

read_file_info(fp)

Read the file header and metadata.

Parameters

fp (IO)

Return type

CR2WFileInfo

read_struct(fp, struct_type)

Read the given struct from the open file.

Parameters

• fp (IO)

• struct_type (type[~_S])

Return type

~_S

read_tables(fp, table_struct, header)

Read a tables of the given type in from the opened file.

Parameters

• fp (IO)

• table_struct (type[~_S])

• header (CR2WTable)

Return type

Iterator[~_S]

Returns

An iterator over instances of table_struct.