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d οΏ½ Z d e j f d οΏ½ οΏ½ YZ d οΏ½ Z e d k rοΏ½ e οΏ½ n d S( sοΏ½ Functions that read and write gzipped files.
The user of the file doesn't have to worry about the compression,
but random access is not allowed.iοΏ½οΏ½οΏ½οΏ½Nt GzipFilet openi i i i i c C s | j t j d | οΏ½ οΏ½ d S( Ns <L( t writet structt pack( t outputt value( ( s /usr/lib64/python2.7/gzip.pyt write32u s c C s t j d | j d οΏ½ οΏ½ d S( Ns <Ii i ( R t unpackt read( t input( ( s /usr/lib64/python2.7/gzip.pyt read32 s t rbi c C s t | | | οΏ½ S( sοΏ½ Shorthand for GzipFile(filename, mode, compresslevel).
The filename argument is required; mode defaults to 'rb'
and compresslevel defaults to 9.
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d οΏ½ Z RS(! sοΏ½ The GzipFile class simulates most of the methods of a file object with
the exception of the readinto() and truncate() methods.
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i i c C sοΏ½ | r | j d d οΏ½ } n | r: d | k r: | d 7} n | d k rh t j | | pX d οΏ½ } | _ n | d k rοΏ½ t | d d οΏ½ } t | t οΏ½ sοΏ½ | d k rοΏ½ d } qοΏ½ n | d k rοΏ½ t | d οΏ½ rοΏ½ | j } qοΏ½ d } n | d d !d
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k rοΏ½t | _ | j | οΏ½ t j | t j t j t j d οΏ½ | _ n t d | d οΏ½ | | _ d | _ | | _ | j t k rοΏ½| j οΏ½ n d S( sz Constructor for the GzipFile class.
At least one of fileobj and filename must be given a
non-trivial value.
The new class instance is based on fileobj, which can be a regular
file, a StringIO object, or any other object which simulates a file.
It defaults to None, in which case filename is opened to provide
a file object.
When fileobj is not None, the filename argument is only used to be
included in the gzip file header, which may include the original
filename of the uncompressed file. It defaults to the filename of
fileobj, if discernible; otherwise, it defaults to the empty string,
and in this case the original filename is not included in the header.
The mode argument can be any of 'r', 'rb', 'a', 'ab', 'w', or 'wb',
depending on whether the file will be read or written. The default
is the mode of fileobj if discernible; otherwise, the default is 'rb'.
Be aware that only the 'rb', 'ab', and 'wb' values should be used
for cross-platform portability.
The compresslevel argument is an integer from 0 to 9 controlling the
level of compression; 1 is fastest and produces the least compression,
and 9 is slowest and produces the most compression. 0 is no compression
at all. The default is 9.
The mtime argument is an optional numeric timestamp to be written
to the stream when compressing. All gzip compressed streams
are required to contain a timestamp. If omitted or None, the
current time is used. This module ignores the timestamp when
decompressing; however, some programs, such as gunzip, make use
of it. The format of the timestamp is the same as that of the
return value of time.time() and of the st_mtime member of the
object returned by os.stat().
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