File: //lib/python3.12/__pycache__/_compression.cpython-312.pyc
�
)!�h1 � � � d Z ddlZddlZej Z G d� dej
� Z G d� dej � Zy)z7Internal classes used by the gzip, lzma and bz2 modules� Nc �( � e Zd ZdZd� Zd� Zd� Zd� Zy)�
BaseStreamz Mode-checking helper functions.c �2 � | j r t d� �y )Nz I/O operation on closed file)�closed�
ValueError��selfs �#/usr/lib/python3.12/_compression.py�_check_not_closedz BaseStream._check_not_closed s � � �;�;� � ;�<� <� � c �N � | j � st j d� �y )NzFile not open for reading)�readable�io�UnsupportedOperationr s r
�_check_can_readzBaseStream._check_can_read �" � ��}�}���)�)�*E�F� F� r c �N � | j � st j d� �y )NzFile not open for writing)�writabler r r s r
�_check_can_writezBaseStream._check_can_write r r c � � | j � st j d� �| j � st j d� �y )Nz3Seeking is only supported on files open for readingz3The underlying file object does not support seeking)r r r �seekabler s r
�_check_can_seekzBaseStream._check_can_seek sO � ��}�}���)�)� +F� G�
G��}�}���)�)� +E� F�
F� r N)�__name__�
__module__� __qualname__�__doc__r r r r � r r
r r s � �)�=�G�G�Fr r c �t � � e Zd ZdZd� Zd d�Z� fd�Zd� Zd� Zd
d�Z d� Z
d � Z e j fd
�Zd � Z� xZS )�DecompressReaderz5Adapts the decompressor API to a RawIOBase reader APIc � � y)NTr r s r
r zDecompressReader.readable$ s � �r c � � || _ d| _ d| _ d| _ || _ || _ | j di | j
��| _ || _ y )NFr ���r )�_fp�_eof�_pos�_size�_decomp_factory� _decomp_args�
_decompressor�_trailing_error)r �fp�decomp_factory�trailing_error� decomp_argss r
�__init__zDecompressReader.__init__' sZ � ������ ��� � ��
� .�� � '��� 1�T� 1� 1� F�D�4E�4E� F��� .�� r c �. �� d | _ t �| � � S �N)r) �super�close)r � __class__s �r
r3 zDecompressReader.close; s �� � !����w�}�� r c �6 � | j j � S r1 )r# r r s r
r zDecompressReader.seekable? s � ��x�x� � �"�"r c � � t |� 5 }|j d� 5 }| j t |� � }||d t |� d d d � d d d � t � S # 1 sw Y � xY w# 1 sw Y t � S xY w)N�B)�
memoryview�cast�read�len)r �b�view� byte_view�datas r
�readintozDecompressReader.readintoB sv � �
��]� )�d�D�I�I�c�N� )�i��9�9�S��^�,�D�$(�I�j�s�4�y� !� )� )� �4�y�� )� )�� )� �4�y��s" �A.�)A"�A.�"A+ �'A.�.Bc �� � |dk r| j � S |r | j ryd } | j j ry| j j xs | j
j
t � }|sn� | j di | j ��| _ | j j ||� }n`| j j r,| j
j
t � }|s
t d� �d}| j j ||� }|rn��|sd| _ | j | _ y| xj t! |� z
c_ |S # | j $ r Y �Lw xY w)Nr r TzACompressed file ended before the end-of-stream marker was reachedr )�readallr$ r) �eof� unused_datar# r: � BUFFER_SIZEr' r( �
decompressr* � needs_input�EOFErrorr% r& r; )r �sizer? �rawblocks r
r: zDecompressReader.readH sY � � �!�8��<�<�>� !��t�y�y���� ��!�!�%�%� � .� .� :� :� 7� �H�H�M�M�+� 6� � ��%9�T�%9�%9� &)��'�'�&)��"�� �-�-�8�8��4�H�D�
�%�%�1�1� #�x�x�}�}�[� 9�H�#� &� (J� K� K� #�H��)�)�4�4�X�t�D����1 �2 � �D�I� ���D�J�� � � �S��Y� � �� ��' �+�+� ���s � E �E(�'E(c �� � g }| j t j � x}r3|j |� | j t j � x}r�3dj |� S )Nr )r: �sys�maxsize�append�join)r �chunksr? s r
rB zDecompressReader.readallq sX � ��� �i�i�� � �,�,�d�,� �M�M�$� � �i�i�� � �,�,�d�,� �x�x�� � r c � � | j j d� d| _ d| _ | j di | j
��| _ y )Nr Fr )r# �seekr$ r% r' r( r) r s r
�_rewindzDecompressReader._rewind| s> � � ���
�
�a���� ��� � 1�T� 1� 1� F�D�4E�4E� F��r c � � |t j k( rn�|t j k( r| j |z }n�|t j k( r_| j
dk r@| j
t j � r! | j
t j � r�!| j
|z }nt dj |� � �|| j k r| j � n|| j z }|dkD rL| j
t t j |� � }|s
| j S |t |� z }|dkD r�L| j S )Nr z Invalid value for whence: {})
r �SEEK_SET�SEEK_CURr% �SEEK_ENDr& r: �DEFAULT_BUFFER_SIZEr �formatrS �minr; )r �offset�whencer? s r
rR zDecompressReader.seek� s � � �R�[�[� � �
�r�{�{�
"��Y�Y��'�F�
�r�{�{�
"��z�z�A�~��i�i�� 6� 6�7�� �i�i�� 6� 6�7��Z�Z�&�(�F� � ;� B� B�6� J�K� K� �D�I�I� � �L�L�N� �d�i�i� �F� �q�j��9�9�S��!7�!7�� @�A�D��� �y�y��
�c�$�i� �F� �q�j� �y�y�r c � � | j S )z!Return the current file position.)r% r s r
�tellzDecompressReader.tell� s � ��y�y�r )r )r" )r r r r r r/ r3 r r@ r: rB rS r rU rR r^ �
__classcell__)r4 s @r
r r ! sC �� �?��.�( �#�� '�R �G� #%�+�+� �<r r ) r r rL rX rE �BufferedIOBaser � RawIOBaser r r r
�<module>rb s? �� =� �
��$�$� �F��"�"� F�0A�r�|�|� Ar