dpkg::compression::process(3) [debian man page]

Dpkg::Compression::Process(3)					   libdpkg-perl 				     Dpkg::Compression::Process(3)

NAME

       Dpkg::Compression::Process - run compression/decompression processes

DESCRIPTION

       This module provides an object oriented interface to run and manage compression/decompression processes.

METHODS

       my $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).

       my @exec = $proc->get_compress_cmdline()
       my @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.

AUTHOR

       Raphael Hertzog <hertzog@debian.org>.

1.16.15 							    2014-06-05					     Dpkg::Compression::Process(3)

Check Out this Related Man Page

Dpkg::Control::Info(3)						   libdpkg-perl 					    Dpkg::Control::Info(3)

NAME

       Dpkg::Control::Info - parse files like debian/control

DESCRIPTION

       It provides an object to access data of files that follow the same syntax than debian/control.

FUNCTIONS

       $c = Dpkg::Control::Info->new($file)
	   Create a new Dpkg::Control::Info object for $file. If $file is omitted, it loads debian/control. If file is "-", it parses the standard
	   input.

       $c->reset()
	   Resets what got read.

       $c->load($file)
	   Load the content of $file. Exits in case of errors. If file is "-", it loads from the standard input.

       $c->parse($fh, $description)
	   Parse a control file from the given filehandle. Exits in case of errors.  $description is used to describe the filehandle, ideally it's
	   a filename or a description of where the data comes from. It's used in error messages.

       $c->[0]
       $c->get_source()
	   Returns a Dpkg::Control object containing the fields concerning the source package.

       $c->get_pkg_by_idx($idx)
	   Returns a Dpkg::Control object containing the fields concerning the binary package numbered $idx (starting at 1).

       $c->get_pkg_by_name($name)
	   Returns a Dpkg::Control object containing the fields concerning the binary package named $name.

       $c->get_packages()
	   Returns a list containing the Dpkg::Control objects for all binary packages.

       $c->output($filehandle)
	   Dump the content into a filehandle.

       "$c"
	   Return a string representation of the content.

       @{$c}
	   Return a list of Dpkg::Control objects, the first one is corresponding to source information and the following ones are the binary
	   packages information.

AUTHOR

       Raphael Hertzog <hertzog@debian.org>.

1.16.0.3							    2012-04-17						    Dpkg::Control::Info(3)

Linux and UNIX Man Pages

dpkg::compression::process(3) [debian man page]

Check Out this Related Man Page