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S )z�Interface to the libbzip2 compression library.
This module provides a file interface, classes for incremental
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d.dd�Zdd� Zd0dd�Zd2dd �Zd!d"� Zd#d$� Zejfd%d&�Zd'd(� ZdS )3r a@ A file object providing transparent bzip2 (de)compression.
A BZ2File can act as a wrapper for an existing file object, or refer
directly to a named file on disk.
Note that BZ2File provides a *binary* file interface - data read is
returned as bytes, and data to be written should be given as bytes.
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k�rJtj| jttd�}tj|�| _nd| _dS )a> Open a bzip2-compressed file.
If filename is a str, bytes, or PathLike object, it gives the
name of the file to be opened. Otherwise, it should be a file
object, which will be used to read or write the compressed data.
mode can be 'r' for reading (default), 'w' for (over)writing,
'x' for creating exclusively, or 'a' for appending. These can
equivalently be given as 'rb', 'wb', 'xb', and 'ab'.
buffering is ignored. Its use is deprecated.
If mode is 'w', 'x' or 'a', compresslevel can be a number between 1
and 9 specifying the level of compression: 1 produces the least
compression, and 9 (default) produces the most compression.
If mode is 'r', the input file may be the concatenation of
multiple compressed streams.
NFz)Use of 'buffering' argument is deprecatedr r z%compresslevel must be between 1 and 9� r �rb�w�wb�x�xb�a�abzInvalid mode: %rT�read�writez6filename must be a str, bytes, file or PathLike object)Ztrailing_errorr )r
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zBZ2File.__init__c C s� | j �� | jtkrdS z<| jtkr.| jj� n"| jtkrP| jj| j j
� � d| _ W dz| jrf| jj� W dd| _d| _t| _d| _X X W dQ R X dS )z�Flush and close the file.
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closed, any other operation on it will raise a ValueError.
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