#!/usr/bin/env perl
#Framework, welches ein komplettes Linux System aus den Sourcen erstellt
#dieses Framework wird im CVS Repository
#:pserver:cvs.compuextreme.de:/Data/cvs zur Verfügung gestellt
#
#Lage dieser Datei im Archiv: $HeadURL: svn://svn.compuextreme.de/Viitor/V962/ViitorMake/Scripts/GenInstallcfg $
#
#(c) 2003 Harald Kueller, Germany
#This program is free software; you can redistribute it and/or
#modify ist under the terms of the GNU General Public License
#as published by the Free Software Foundation; either version
#2 of the License, or (at your option) any later version.
#
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#See the GNU General Public License for more details.
#
#You should have received a copy of the GNU General Public License
#along with this program; if not write to the Free Software Foundation,
#Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
#Script:
#
#Letzte Änderung von: $Author: kueller $
#Datum der letzten Änderung: $Date: 2010-01-19 12:27:40 +0100 (Di, 19 Jan 2010) $
#Version der Datei: $Revision: 5134 $
#
#

use strict;
use Getopt::Std;

my %ArgSwitches;
my $DistTarget;
my $CfgFile;
my $PkgName;
my @PkgList;
my @CheckDependics;

getopts('d:f:',\%ArgSwitches);
foreach (sort keys %ArgSwitches) {
	( $_ eq "d" ) && ($DistTarget = $ArgSwitches{$_});
	( $_ eq "f" ) && ($CfgFile = $ArgSwitches{$_});
}

if ( ($ArgSwitches{f}) && ($ArgSwitches{d}) ) {
	my @CfgFile;
	my @Dependics;
	open(CFG,"$CfgFile") or die "Could not open the in file: $!";
	@CfgFile=<CFG>;
	foreach(@CfgFile) {
		chomp($_);
	}
	close CFG;
	open(PKGLIST,"$DistTarget/.pkglist") or die "Could no open pkglist: $!";
	@PkgList = <PKGLIST>;
	close PKGLIST;
	@CheckDependics=@CfgFile;
	foreach ( @CheckDependics ) {
		print STDERR "Generating Dependics for $_\n";
		my @PkgFileInfo = &GetPkgInfoList($_);
		if ( ! @PkgFileInfo ) {
			print STDERR "Error in Config File: Shortname $_ not found!";
			exit 10;
		}
		my $PkgFilePath="$DistTarget/$PkgFileInfo[1]/$PkgFileInfo[0]";
		@Dependics=&GetDependicsList($PkgFilePath);
		foreach ( @Dependics ) {
			my $NotFound;

			chomp($_);
			$_ =~ s/^WARN\s(.*)$/$1/;
			$_ =~ s/^FORCE\s(.*)$/$1/;
			my $DepName=$_;
			$DepName =~ s/\+/\\+/g;
			$NotFound=0;
			foreach ( @CheckDependics ) {
				if ( /^$DepName$/ ) {
					$NotFound=1;
					last;
				} else {
					$NotFound=0;
				}
			}
			if ( ! $NotFound ) {
				push @CheckDependics,$_;
			}
		}
	}
	open (BASE,"$DistTarget/../install/BaseDevel.cfg") or die "BaseDevel.cfg not found - should be created first! :$!\n";
	my @Cfg = <BASE>;
	close BASE;
	foreach ( @Cfg ) {
		chomp($_);
		my @CfgLine = split /\s/,$_;
		my $NotFound;
		my $DepName = $CfgLine[2];
		$DepName=~ s/\+/\\+/g;
		foreach ( @CheckDependics ) {
			if ( /^$DepName$/ ) {
				$NotFound=1;
				last;
			} else {
				$NotFound=0;
			}
		}
		if ( ! $NotFound ) {
			push @CheckDependics, $DepName;
		}
	}
	open ( ALL,"$DistTarget/../install/All.cfg" ) or die "All.cfg must be created first!: $!\n";
	@Cfg = <ALL>;
	close ALL;
	my @NewCfg;
	foreach ( @Cfg ) {
		chomp($_);
		my @CfgLine = split /\s/,$_;
		my $NotFound;
		my $DepName = $CfgLine[2];
		$DepName =~ s/\+/\\+/g;
		foreach ( @CheckDependics ) {
			if ( /^$DepName$/ ) {
				$NotFound=1;
				last;
			} else {
				$NotFound=0;
			}
		}
		if ( $NotFound ) {
			push @NewCfg, $_;
		}
	}
	foreach ( @NewCfg ) {
		print "$_\n"
	}
} else {
	&HELP_MESSAGE();
}
	
sub DeBzip2() {
        open(UNCOMPRESS,"|bzip2 -d -c >/tmp/installpkg_bzip2_$$") or die "Can not start decompress: $!";
	print UNCOMPRESS @_;
	close UNCOMPRESS;
	open(DATA,"/tmp/installpkg_bzip2_$$") or die "Data File after decompression not found: $!";
	my @UnBzip2Data = <DATA>;
	close DATA;
	unlink("/tmp/installpkg_bzip2_$$");
	return @UnBzip2Data;
}

sub GetPkgInfoList() {
	my @PkgFile;
	my $SearchName=$_[0];

	$SearchName=~s/\+/\\+/g;
	foreach ( @PkgList ) {
		if ( /SN=$SearchName;PF=(.*);PP=(.*)/ ) {
			$PkgFile[0]=$1;
			$PkgFile[1]=$2;
			chomp($PkgFile[1]);
			return @PkgFile;
		}
	}
	return();
}

sub GetDependicsList() {
	my $PkgFile=@_[0];
	my @StartFile;

	open(ARCH,$PkgFile) or die "Could not open Archive File: $!";
	my $ArchiveInfo=<ARCH>;
	my @FileSizes = split /\s/,$ArchiveInfo;
	unshift(@FileSizes,0);
	$FileSizes[0]=tell(ARCH);
	for ( my $j = 0; $j <= 11; $j++ ) {
		for ( my $i=0; $i <= $j; $i++ ) {
			$StartFile[$j]+=$FileSizes[$i];
		}
	}
	shift @FileSizes;
	if ( $FileSizes[0] > 0 ) {
		read ARCH,my $Dependics, $FileSizes[0];
		close ARCH;
		return(&DeBzip2($Dependics));
	} else {
		close ARCH;
		return () ;
	}
}

sub HELP_MESSAGE() {
	printf("\nGenInstallcfg: Aus den *.in files *.cfg files für make_base_install erzeugen\n");
	printf("usage: ./GenInstallcfg -d <Distributionbinarydir> -f <cfg.in file>\n");
}