# $OpenBSD: PackingElement.pm,v 1.6 2004/01/22 21:11:43 espie Exp $
#
# Copyright (c) 2003 Marc Espie.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 
# THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OPENBSD
# PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# This is the basic class, which is mostly abstract, except for
# setKeyword and Factory.
# It does provide base methods for stuff under it, though.

use strict;
use warnings;
use OpenBSD::PackageInfo;
package OpenBSD::PackingElement;
use File::Basename;
our %keyword;

sub Factory
{
	local $_ = shift;
	if (m/^\@(\S+)\s*/) {
		my $cmd = $1;
		my $args = $';

		if (defined $keyword{$cmd}) {
			$keyword{$cmd}->add(@_, $args);
		} else {
		    OpenBSD::PackingElement::Other->add(@_, "\@$cmd $args");
		}
	} else {
		OpenBSD::PackingElement::File->add(@_, $_);
	}
}

sub setKeyword {
	my ($class, $k) = @_;
	$keyword{$k} = $class;
}

sub category() { 'items' }

sub new
{
	my ($class, $args) = @_;
	bless { name => $args }, $class;
}

sub destate
{
}

sub add
{
	my ($class, $plist, @args) = @_;

	my $self = $class->new(@args);
	$self->destate($plist->{state});
	$plist->add2list($self);
	return $self;
}

sub keyword() { return; }

sub write
{
	my ($self, $fh) = @_;
	print $fh "\@", $self->keyword(), " ", $self->stringize(), "\n";
}

sub stringize($)
{
	return $_[0]->{name};
}

sub compute_fullname
{
	my ($self, $state) = @_;

	$self->{cwd} = $state->{cwd};
	my $fullname = $self->{fullname} = 
	    File::Spec->canonpath(File::Spec->catfile($state->{cwd}, $self->{name}));
	$state->{lastfile} = $self;
	return $fullname;
}

sub expand
{
	my $state = $_[2];
	local $_ = $_[1];
	if (m/\%F/) {
		die "Bad expand" unless defined $state->{lastfile};
		s/\%F/$state->{lastfile}->{name}/g;
	}
	if (m/\%D/) {
		die "Bad expand" unless defined $state->{cwd};
		s/\%D/$state->{cwd}/g;
	}
	if (m/\%B/) {
		die "Bad expand" unless defined $state->{lastfile};
		s/\%B/dirname($state->{lastfile}->fullname())/ge;
	}
	if (m/\%f/) {
		die "Bad expand" unless defined $state->{lastfile};
		s/\%f/basename($state->{lastfile}->fullname())/ge;
	}
	return $_;
}
sub IsFile() { 0 }

sub fullname($)
{
	return $_[0]->{fullname};
}

package OpenBSD::PackingElement::File;
our @ISA=qw(OpenBSD::PackingElement);
use File::Spec;
use OpenBSD::PackageInfo qw(is_info_name);
__PACKAGE__->setKeyword('file');

sub write
{
	my ($self, $fh) = @_;
	print $fh "\@ignore\n" if defined $self->{ignore};
	print $fh "\@comment no checksum\n" if defined $self->{nochecksum};
	if ($self->stringize() =~ m/^\@/) {
		$self->SUPER::write($fh);
	} else {
		print $fh $self->stringize(), "\n";
	}
	if (defined $self->{md5}) {
		print $fh "\@md5 ", $self->{md5}, "\n";
	}
	if (defined $self->{size}) {
		print $fh "\@size ", $self->{size}, "\n";
	}
}

sub destate
{
	my ($self, $state) = @_;
	$self->compute_fullname($state);
	if (defined $state->{mode}) {
		$self->{mode} = $state->{mode};
	}
	if (defined $state->{owner}) {
		$self->{owner} = $state->{owner};
	}
	if (defined $state->{group}) {
		$self->{group} = $state->{group};
	}
	if (defined $state->{nochecksum}) {
		$self->{nochecksum} = 1;
		undef $state->{nochecksum};
	}
	if (defined $state->{ignore}) {
		$self->{ignore} = 1;
		undef $state->{ignore};
	}
}

sub add
{
	my ($class, $plist, @args) = @_;

	my $self = $class->new(@args);
	$self->destate($plist->{state});
	my $j = is_info_name($self->fullname());
	if ($j) {
		bless $self, "OpenBSD::PackingElement::$j";
		$plist->addunique($self);
	} else {
		$plist->add2list($self);
	}
	return $self;
}

sub add_md5
{
	my ($self, $md5) = @_;
	$self->{md5} = $md5;
}

sub add_size
{
	my ($self, $sz) = @_;
	$self->{size} = $sz;
}

sub IsFile() { 1 }

package OpenBSD::PackingElement::Other;
our @ISA=qw(OpenBSD::PackingElement);

package OpenBSD::PackingElement::Ignore;
our @ISA=qw(OpenBSD::PackingElement);
__PACKAGE__->setKeyword('ignore');

sub add
{
	my ($class, $plist, @args) = @_;
	$plist->{state}->{ignore} = 1;
	return undef;
}

# Comment is very special
package OpenBSD::PackingElement::Comment;
our @ISA=qw(OpenBSD::PackingElement);
__PACKAGE__->setKeyword('comment');
sub keyword() { "comment" }

sub add
{
	my ($class, $plist, @args) = @_;

	if ($args[0] =~ m/^MD5:\s*/) {
		$plist->{state}->{lastfile}->add_md5($');
		return undef;
	} elsif ($args[0] =~ m/^subdir\=(.*?)\s+cdrom\=(.*?)\s+ftp\=(.*?)\s*$/) {
		OpenBSD::PackingElement::ExtraInfo->add($plist, $1, $2, $3);
	} elsif ($args[0] eq 'no checksum') {
		$plist->{state}->{nochecksum} = 1;
		return undef;
	} else {
		my $self = $class->new(@args);
		$self->destate($plist->{state});
		$plist->add2list($self);
		return $self;
	}
}

package OpenBSD::PackingElement::md5;
our @ISA=qw(OpenBSD::PackingElement);
__PACKAGE__->setKeyword('md5');

sub add
{
	my ($class, $plist, @args) = @_;

	$plist->{state}->{lastfile}->add_md5($');
	return undef;
}

package OpenBSD::PackingElement::size;
our @ISA=qw(OpenBSD::PackingElement);
__PACKAGE__->setKeyword('size');

sub add
{
	my ($class, $plist, @args) = @_;

	$plist->{state}->{lastfile}->add_size($args[0]);
	return undef;
}

package OpenBSD::PackingElement::Option;
our @ISA=qw(OpenBSD::PackingElement);
__PACKAGE__->setKeyword('option');
sub keyword() { 'option' }

sub add
{
	my ($class, $plist, @args) = @_;
	if ($args[0] eq 'no-default-conflict') {
		shift;
		return OpenBSD::PackingElement::NoDefaultConflict->add(@_);
	} else {
		die "Unknown option: $args[0]";
	}
}

package OpenBSD::PackingElement::NoDefaultConflict;
our @ISA=qw(OpenBSD::PackingElement::Unique);
sub category() { 'no-default-conflict' }
sub keyword() { 'option' }

# The special elements that don't end in the right place
package OpenBSD::PackingElement::ExtraInfo;
our @ISA=qw(OpenBSD::PackingElement);

sub keyword() { 'comment' }
sub category() { 'extrainfo' }


sub new
{
	my ($class, $subdir, $cdrom, $ftp) = @_;
	bless { subdir => $subdir, cdrom => $cdrom, ftp => $ftp}, $class;
}

sub add
{
	my ($class, $plist, @args) = @_;
	my $self = $class->new(@args);
	$plist->addunique($self);
	return $self;
}

sub stringize($)
{
	my $self = $_[0];
	return "subdir=".$self->{subdir}." cdrom=".$self->{cdrom}.
	    " ftp=".$self->{ftp};
}

package OpenBSD::PackingElement::PkgDep;
our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('pkgdep');
sub keyword() { "pkgdep" }
sub category() { "pkgdep" }

package OpenBSD::PackingElement::PkgConflict;
our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('pkgcfl');
sub keyword() { "pkgcfl" }
sub category() { "pkgcfl" }


package OpenBSD::PackingElement::NewDepend;

our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('newdepend');
sub category() { "newdepend" }
sub keyword() { "newdepend" }

sub new
{
	my ($class, $args) = @_;
	my ($name, $pattern, $def) = split /\:/, $args;
	bless { name => $name, pattern => $pattern, def => $def }, $class;
}

sub stringize($)
{
	my $self = $_[0];
	return $self->{name}.':'.$self->{pattern}.':'.$self->{def};
}

package OpenBSD::PackingElement::LibDepend;

our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('libdepend');
sub category() { "libdepend" }
sub keyword() { "libdepend" }

sub new
{
	my ($class, $args) = @_;
	my ($name, $libspec, $pattern, $def)  = split /\:/, $args;
	bless { name => $name, libspec => $libspec, pattern => $pattern, 
	    def => $def }, $class;
}

sub stringize($)
{
	my $self = $_[0];
	return $self->{name}.':'.$self->{libspec}.':'.$self->{pattern}.
	    ':'.$self->{def};
}

package OpenBSD::PackingElement::Unique;
our @ISA=qw(OpenBSD::PackingElement);

sub add 
{
	my ($class, $plist, @args) = @_;

	my $self = $class->new(@args);
	$self->destate($plist->{state});
	$plist->addunique($self);
	return $self;
}

package OpenBSD::PackingElement::Name;
use File::Spec;
our @ISA=qw(OpenBSD::PackingElement::Unique OpenBSD::PackingElement);

__PACKAGE__->setKeyword('name');
sub keyword() { "name" }
sub category() { "name" }

package OpenBSD::PackingElement::Cwd;
use File::Spec;
our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('cwd');

sub keyword() { 'cwd' }

sub destate
{
	my ($self, $state) = @_;
	$state->{cwd} = $self->{name};
	if (!defined $state->{prefix}) {
		$state->{prefix} = $state->{cwd};
	}
}

package OpenBSD::PackingElement::Owner;
our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('owner');
sub keyword() { 'owner' }

sub destate
{
	my ($self, $state) = @_;

	if ($self->{name} eq '') {
		undef $state->{owner};
	} else {
		$state->{owner} = $self->{name};
	}
}

package OpenBSD::PackingElement::Group;
our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('group');
sub keyword() { 'group' }

sub destate
{
	my ($self, $state) = @_;

	if ($self->{name} eq '') {
		undef $state->{group};
	} else {
		$state->{group} = $self->{name};
	}
}

package OpenBSD::PackingElement::Mode;
our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('mode');
sub keyword() { 'mode' }

sub destate
{
	my ($self, $state) = @_;

	if ($self->{name} eq '') {
		undef $state->{mode};
	} else {
		$state->{mode} = $self->{name};
	}
}

package OpenBSD::PackingElement::Exec;
our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('exec');

sub keyword() { "exec" }

sub destate
{
	my ($self, $state) = @_;
	$self->{expanded} = $self->expand($self->{name}, $state);
}

package OpenBSD::PackingElement::Unexec;
our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('unexec');
sub keyword() { "unexec" }

sub destate
{
	my ($self, $state) = @_;
	$self->{expanded} = $self->expand($self->{name}, $state);
}

package OpenBSD::PackingElement::ExtraUnexec;
our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('extraunexec');
sub keyword() { "extraunexec" }

sub destate
{
	my ($self, $state) = @_;
	$self->{expanded} = $self->expand($self->{name}, $state);
}

package OpenBSD::PackingElement::DirRm;
our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('dirrm');
sub keyword() { "dirrm" }

sub destate
{
	my ($self, $state) = @_;
	$self->compute_fullname($state);
}

package OpenBSD::PackingElement::Extra;
our @ISA=qw(OpenBSD::PackingElement);

__PACKAGE__->setKeyword('extra');
sub keyword() { 'extra' }

sub destate
{
	my ($self, $state) = @_;
	$self->compute_fullname($state);
}

package OpenBSD::PackingElement::SpecialFile;
our @ISA=qw(OpenBSD::PackingElement::Unique);

sub add_md5
{
	my ($self, $md5) = @_;
	$self->{md5} = $md5;
}

sub write
{
	&OpenBSD::PackingElement::File::write;
}

package OpenBSD::PackingElement::FCONTENTS;
our @ISA=qw(OpenBSD::PackingElement::SpecialFile);
sub category() { OpenBSD::PackageInfo::CONTENTS }

package OpenBSD::PackingElement::FCOMMENT;
our @ISA=qw(OpenBSD::PackingElement::SpecialFile);
sub category() { OpenBSD::PackageInfo::COMMENT }

package OpenBSD::PackingElement::FDESC;
our @ISA=qw(OpenBSD::PackingElement::SpecialFile);
sub category() { OpenBSD::PackageInfo::DESC }

package OpenBSD::PackingElement::FINSTALL;
our @ISA=qw(OpenBSD::PackingElement::SpecialFile);
sub category() { OpenBSD::PackageInfo::INSTALL }

package OpenBSD::PackingElement::FDEINSTALL;
our @ISA=qw(OpenBSD::PackingElement::SpecialFile);
sub category() { OpenBSD::PackageInfo::DEINSTALL }

package OpenBSD::PackingElement::FREQUIRE;
our @ISA=qw(OpenBSD::PackingElement::SpecialFile);
sub category() { OpenBSD::PackageInfo::REQUIRE }

package OpenBSD::PackingElement::FREQUIRED_BY;
our @ISA=qw(OpenBSD::PackingElement::SpecialFile);
sub category() { OpenBSD::PackageInfo::REQUIRED_BY }

package OpenBSD::PackingElement::FDISPLAY;
our @ISA=qw(OpenBSD::PackingElement::SpecialFile);
sub category() { OpenBSD::PackageInfo::DISPLAY }

package OpenBSD::PackingElement::FMTREE_DIRS;
our @ISA=qw(OpenBSD::PackingElement::SpecialFile);
sub category() { OpenBSD::PackageInfo::MTREE_DIRS }

package OpenBSD::PackingElement::Arch;
our @ISA=qw(OpenBSD::PackingElement::Unique);
__PACKAGE__->setKeyword('arch');
sub category() { 'arch' }
sub keyword() { 'arch' }

sub new
{
	my ($class, $args) = @_;
	my @arches= split(/\,/, $args);
	bless { arches => \@arches }, $class;
}

sub stringize($)
{
	my $self = $_[0];
	return join(',',@{$self->{arches}});
}

1;