4.19.2 Chunk class

4.19.2 Chunk class

A Chunk object is passed to the callback methods of the MBReader class. It contains information about the current chunk and it can be used to read the actual chunk data. A Chunk object has the following attributes and methods:

tag: This is a string containing four characters that represent the chunk name.

size: The size in bytes of the data part of the chunk.

pos: The absolute position of the data part within the input file.

depth: The depth of the chunk (i.e. how deep it is nested). The root has a depth of 0.

parent: The GroupChunk object of the parent chunk. In the case of the root group chunk this attribute is None.

chunkPath( ): Return a string containing the full path to this chunk. The result is a concatenation of all chunk names that lead to this chunk.

read( bytes=-1): Read the specified number of bytes from the chunk. If bytes is -1 the entire chunk data is read. The return value is a string containing the binary data.