404 Not Found

Sh3ll
Server : Apache
System : Linux server1.cgrithy.com 3.10.0-1160.95.1.el7.x86_64 #1 SMP Mon Jul 24 13:59:37 UTC 2023 x86_64
User : nobody ( 99)
PHP Version : 8.1.23
Disable Function : NONE
Directory : /opt/alt/python38/lib64/python3.8/__pycache__/
Upload File :
Current File : //opt/alt/python38/lib64/python3.8/__pycache__/chunk.cpython-38.opt-1.pyc
U

��,a;�@sdZGdd�d�ZdS)aSimple class to read IFF chunks.

An IFF chunk (used in formats such as AIFF, TIFF, RMFF (RealMedia File
Format)) has the following structure:

+----------------+
| ID (4 bytes)   |
+----------------+
| size (4 bytes) |
+----------------+
| data           |
| ...            |
+----------------+

The ID is a 4-byte string which identifies the type of chunk.

The size field (a 32-bit value, encoded using big-endian byte order)
gives the size of the whole chunk, including the 8-byte header.

Usually an IFF-type file consists of one or more chunks.  The proposed
usage of the Chunk class defined here is to instantiate an instance at
the start of each chunk and read from the instance until it reaches
the end, after which a new instance can be instantiated.  At the end
of the file, creating a new instance will fail with an EOFError
exception.

Usage:
while True:
    try:
        chunk = Chunk(file)
    except EOFError:
        break
    chunktype = chunk.getname()
    while True:
        data = chunk.read(nbytes)
        if not data:
            pass
        # do something with data

The interface is file-like.  The implemented methods are:
read, close, seek, tell, isatty.
Extra methods are: skip() (called by close, skips to the end of the chunk),
getname() (returns the name (ID) of the chunk)

The __init__ method has one required argument, a file-like object
(including a chunk instance), and one optional argument, a flag which
specifies whether or not chunks are aligned on 2-byte boundaries.  The
default is 1, i.e. aligned.
c@sZeZdZddd�Zdd�Zdd�Zd	d
�Zdd�Zddd�Zdd�Z	ddd�Z
dd�ZdS)�ChunkTFc	Cs�ddl}d|_||_|rd}nd}||_|�d�|_t|j�dkrFt�z |�|d|�d��d|_	Wn|j
k
r�td�YnX|r�|j	d|_	d|_z|j��|_
Wnttfk
r�d|_YnXd|_dS)	N�F�>�<��L�T)�struct�closed�align�file�read�	chunkname�len�EOFErrorZunpack_from�	chunksize�error�	size_read�tell�offset�AttributeError�OSError�seekable)�selfrr
Z	bigendianZ
inclheaderrZstrflag�r�*/opt/alt/python38/lib64/python3.8/chunk.py�__init__4s, zChunk.__init__cCs|jS)z*Return the name (ID) of the current chunk.)r
�rrrr�getnameNsz
Chunk.getnamecCs|jS)z%Return the size of the current chunk.)rrrrr�getsizeRsz
Chunk.getsizecCs |jsz|��W5d|_XdS)NT)r	�skiprrrr�closeVszChunk.closecCs|jrtd��dS)N�I/O operation on closed fileF)r	�
ValueErrorrrrr�isatty]szChunk.isattyrcCsv|jrtd��|jstd��|dkr0||j}n|dkrB||j}|dksT||jkrXt�|j�|j	|d�||_dS)z�Seek to specified position into the chunk.
        Default position is 0 (start of chunk).
        If the file is not seekable, this will result in an error.
        r!zcannot seek��rN)
r	r"rrrr�RuntimeErrorr�seekr)r�pos�whencerrrr'bs
z
Chunk.seekcCs|jrtd��|jS)Nr!)r	r"rrrrrrusz
Chunk.tell���cCs�|jrtd��|j|jkrdS|dkr2|j|j}||j|jkrN|j|j}|j�|�}|jt|�|_|j|jkr�|jr�|jd@r�|j�d�}|jt|�|_|S)z�Read at most size bytes from the chunk.
        If size is omitted or negative, read until the end
        of the chunk.
        r!�rr$)r	r"rrrrrr
)r�size�data�dummyrrrrzs$��z
Chunk.readcCs�|jrtd��|jrnzD|j|j}|jr:|jd@r:|d}|j�|d�|j||_WdStk
rlYnX|j|jkr�t	d|j|j�}|�
|�}|snt�qndS)z�Skip the rest of the chunk.
        If you are not interested in the contents of the chunk,
        this method should be called so that the file points to
        the start of the next chunk.
        r!r$Ni )r	r"rrrr
rr'r�minrr)r�nr.rrrr�s"
z
Chunk.skipN)TTF)r)r*)�__name__�
__module__�__qualname__rrrr r#r'rrrrrrrr3s


rN)�__doc__rrrrr�<module>s2
ZeroDay Forums Mini