Poster of Linux kernelThe best gift for a Linux geek
Dpkg::Compression

Dpkg::Compression

Section: libdpkg-perl (3) Updated: 2011-03-01
Local index Up
 

NAME

Dpkg::Compression - simple database of available compression methods  

DESCRIPTION

This modules provides a few public funcions and a public regex to interact with the set of supported compression methods.  

EXPORTED VARIABLES

$compression_re_file_ext
A regex that matches a file extension of a file compressed with one of the supported compression methods.
 

EXPORTED FUNCTIONS

my @list = compression_get_list()
Returns a list of supported compression methods (sorted alphabetically).
compression_is_supported($comp)
Returns a boolean indicating whether the give compression method is known and supported.
compression_get_property($comp, $property)
Returns the requested property of the compression method. Returns undef if either the property or the compression method doesn't exist. Valid properties currently include ``file_ext'' for the file extension, ``comp_prog'' for the name of the compression program and ``decomp_prog'' for the name of the decompression program.
compression_guess_from_filename($filename)
Returns the compression method that is likely used on the indicated filename based on its file extension.
my $comp = compression_get_default()
Return the default compression method. It's ``gzip'' unless "compression_set_default" has been used to change it.
compression_set_default($comp)
Change the default compression method. Errors out if the given compression method is not supported.
my $level = compression_get_default_level()
Return the default compression level used when compressing data. It's ``9'' unless "compression_set_default_level" has been used to change it.
compression_set_default_level($level)
Change the default compression level. Errors out if the level is not valid (see "compression_is_valid_level"). either a number between 1 and 9 or ``fast'' or ``best''.
compression_is_valid_level($level)
Returns a boolean indicating whether $level is a valid compression level (it must be either a number between 1 and 9 or ``fast'' or ``best'')
 

AUTHOR

Raphaël Hertzog <hertzog@debian.org>.


 

Index

NAME
DESCRIPTION
EXPORTED VARIABLES
EXPORTED FUNCTIONS
AUTHOR

This document was created by man2html, using the manual pages.
Time: 21:45:12 GMT, April 16, 2011