Reference

OpenBSD::PackingElement(3p)

"pkg_add(1)" packing-elements object hierarchy

NAME

OpenBSD::PackingElement - "pkg_add(1)" packing-elements object hierarchy

SYNOPSIS

    package OpenBSD::PackingElement;
    sub method
    {
    }
    package OpenBSD::PackingElement::Depend;
    sub method
    {
        my ($self, @args) = @_;
        # do something
    }
    package main;
    use OpenBSD::PackingList;
    $plist = OpenBSD::PackingList->fromfile($filename);
    $plist->visit('method', @args);

DESCRIPTION

"OpenBSD::PackingElement" is the base class for all elements in a packing-list (see OpenBSD::PackingList(3p) and pkg_create(1)).

Manipulation of packing-lists mostly occurs through visitor patterns such as "OpenBSD::PackingList::visit": client code defines a method for each relevant class in the hierarchy and calls "$plist->visit('method')" to perform the processing.

Most actual objects have one property: their "name".

::Meta

base class for all meta information that can be reordered at will.

::Unique

meta information with uniqueness properties.

::Arch

architecture requirements.

::ExtraInfo

some unique properties, like "PKGPATH" and allowed-for-ftp status.

::Name

the package name.

::LocalBase

the local base for the package.

::NoDefaultConflict

special annotation that package should not have any "stem-*" conflict marker.

::SpecialFile

special files like the package description or install script.

::FCONTENTS

contents file.

::FDESC

package description.

::DisplayFile

abstract class for special files that can be displayed. provides method prepare($state) to display the file.

::FDISPLAY

message displayed during package install.

::FUNDISPLAY

message displayed during package uninstall.

::Option

factory for @option

::Comment

comments in the packing-lists. The constructor is actually a factory, since some comments evolve to some other class.

::CVSTag

special class of comments that get reordered to the front of packing-lists.

::Depend

all dependency information.

::Wantlib

shared library needed for the package.

::Dependency

package needed, with the following properties: "pkgpath" is the path used to create the dependency, "pattern" is the OpenBSD::PkgSpec(3p) pattern used to match the dependency, "def" is the default value of the dependency computed during build, to use for comparing package signatures and to fulfill default dependencies.

::Conflict

conflict information.

::Annotation

stuff that doesn't really exist as objects, but is used to add properties to objects.

::Ignore

mark next object as ignored.

::sha

mark last file with a checksum.

::size

mark last file with a size.

::symlink

mark last file as a symlink.

::hardlink

mark last file as a hardlink.

::temp

mark last file with a temporary name. Used during extraction of packages for replacement.

::Object

somewhat concrete elements in packing-lists. This is the base class for objects with a location in the filesystem. It defineds method "fullname", to access the complete name of the object.

Note that all objects with file names use relative names except for "::Extra", "::Sample" and "::Sampledir"

::FileObject

abstract class corresponding to files and directories. Default constructor depends on a "dirclass" property, that may create objects from another class if their name ends with a "/". The full object name is normally computed relative to the current working directory as set in "::State".

::FileBase

abstract class for files.

::File

actual file objects present in the packing-list.

::InfoFile

GNU info file objects.

::Shell

files with shell properties.

::Manpage

man pages.

::Lib

shared library files.

::Sample

file objects not present in the packing-list.

::DirlikeObject

abstract class for directories.

::DirRm

deprecated.

::DirBase
::Dir

normal directory, with specialized versions.

::Infodir

directory holds GNU info files.

::Fontdir

directory holds X11 fonts.

::Mandir

directory is the root of a set of manpages.

::Sampledir

directory is used to hold configuration files or similar objects.

::Action

stuff that performs some action during addition/removal of package.

::NewAuth
::NewUser

user that needs to be created for the package to work.

::NewGroup

group that needs to be created for the package to work.

::ExeclikeAction

escape mechanism for embedded code that needs to be run.

::Exec

code to run during installation.

::Unexec

code to run during deinstallation.

::Extraunexec

extra code to run during deinstallation with -c.

::State

annotation-like stuff that can't be easily moved around because it influences surrounding objects (mostly derived from "::FileObject").

::Cwd

change the current working directory.

::Owner

change the current file owner.

::Group

change the current file group.

::Mode

change the current file mode.

CAVEATS

Some aspects of this API are likely to change in the future, although the basic class hierarchy is now more or less worked out.

History