Dpkg::Compr...on::Process(3perl) libdpkg-perl Dpkg::Compr...on::Process(3perl)
NAME
Dpkg::Compression::Process - run compression/decompression processes
DESCRIPTION
This module provides an object oriented interface to run and manage
compression/decompression processes.
METHODS
$proc = Dpkg::Compression::Process->new(%opts)
Create a new instance of the object. Supported options are
"compression" and "compression_level" (see corresponding set_*
functions).
$proc->set_compression($comp)
Select the compression method to use. It errors out if the method
is not supported according to compression_is_supported() (of
Dpkg::Compression).
$proc->set_compression_level($level)
Select the compression level to use. It errors out if the level is
not valid according to compression_is_valid_level() (of
Dpkg::Compression).
@exec = $proc->get_compress_cmdline()
@exec = $proc->get_uncompress_cmdline()
Returns a list ready to be passed to exec(), its first element is
the program name (either for compression or decompression) and the
following elements are parameters for the program.
When executed the program acts as a filter between its standard
input and its standard output.
$proc->compress(%opts)
Starts a compressor program. You must indicate where it will read
its uncompressed data from and where it will write its compressed
data to. This is accomplished by passing one parameter "to_*" and
one parameter "from_*" as accepted by Dpkg::IPC::spawn().
You must call wait_end_process() after having called this method to
properly close the sub-process (and verify that it exited without
error).
$proc->uncompress(%opts)
Starts a decompressor program. You must indicate where it will read
its compressed data from and where it will write its uncompressed
data to. This is accomplished by passing one parameter "to_*" and
one parameter "from_*" as accepted by Dpkg::IPC::spawn().
You must call wait_end_process() after having called this method to
properly close the sub-process (and verify that it exited without
error).
$proc->wait_end_process(%opts)
Call Dpkg::IPC::wait_child() to wait until the sub-process has
exited and verify its return code. Any given option will be
forwarded to the wait_child() function. Most notably you can use
the "nocheck" option to verify the return code yourself instead of
letting wait_child() do it for you.
CHANGES
Version 1.00 (dpkg 1.15.6)
Mark the module as public.
1.22.6 2025-09-18 Dpkg::Compr...on::Process(3perl)
Generated by dwww version 1.16 on Tue Dec 16 17:06:47 CET 2025.