#!/usr/bin/perl

use File::Basename;
use File::Find;

# The Lazy Guy's packaging tool for gBootRoot.
# This program sets-up the archive which will be turned into a package and 
# needs to be run as root.  The advantage of this program is that the 
# archive will always represent the Makefile which is being tested
# when development isn't being done with perl -I . ./gbootroot.

# This program uses dh-make, and copies your own defaults to 
# $packaging_place/debian from your $packaging_defaults, and updates
# to the proper date/times.

# User defined variables for directories

my $user_home = "/home/mttrader";
my $gbootroot_cvs =  "$user_home/gbootroot/gbootroot";
my $packaging_place = "$user_home/gbootroot";
my $packaging_defaults;
my $email = "freesource\@users.sourceforge.net";


# Other vars
my $version;

# Find the version

open(CVS, "$gbootroot_cvs/gbootroot") or 
	die "Couldn't find gbootroot in $gbootroot_cvs: $!\n";
	while (<CVS>) {
		if (/\my \$version/) {
			$version = (split(/=/,$_))[1];
			chomp $version;
			$version =~ s/ //;
			$version =~ s/"//g;
			$version =~ s/;//;
		}			

	}
close(CVS);


$packaging_place = "$packaging_place/gbootroot-$version";

# Make sure the directory exists.

home_builder($packaging_place);

# Because I am too lazy to clean out CVS, I only want the stuff copied over
# which is in the Makefile, I'll also have to clean out any CVS directories.

$/  = "";
my @make_paragraph;
open(CVS, "$gbootroot_cvs/Makefile") or 
	die "Couldn't find Makefile in $gbootroot_cvs: $!\n";

	while (<CVS>) {
		push(@make_paragraph,$_);				
	}
close(CVS);
$/ = "\n";

chomp $make_paragraph[1];
my @make_lines = split(/\n/,$make_paragraph[1]);
shift(@make_lines);

chdir($gbootroot_cvs) or die "Couldn't change to $gbootroot_cvs: $?\n";

# Basically we are just concerned with the first part of cp and will
# use home_builder to make sure the directory exists.

foreach (@make_lines) {
	s/\t//;
	if (/cp/) {
	 my $dir = ((split))[2];
	 my $base;
         	if ($dir =~ m,/,) {
	 	$base = dirname($dir);
		home_builder("$packaging_place/$base");
		}
	 system "cp -fa $dir $packaging_place/$base";
	}
	else {
		system "$_";
        }
}

system "cp -fa Makefile.pkg $packaging_place/Makefile";

# Now we get to clean out any CVS directories and make sure that the 
# permissions are all for the user who will be creating the package.
my ($real_uid, $real_gid) = (stat($user_home))[4,5];
if (-d $packaging_place) {
        finddepth sub {  

                 my($uid,$gid) = (stat($File::Find::name))[4,5];
                 if ($real_uid != $uid) {
                    system "chown $real_uid $File::Find::name";
                 }
                 if ($real_gid != $gid) {
                    system "chgrp $real_gid $File::Find::name";
                 }  
                 if (/CVS/) {
                     chdir(dirname($File::Find::name));
                     system "rm -rf CVS";
                 }
               
         } , $packaging_place ;
}

chdir($packaging_place) or die "Can't change to $packaging_place: $?\n";
system "dh_make -e $email";

sub home_builder {

    my ($home_builder) = @_; 

    if (!-d $home_builder) {
	if (-e $home_builder) {
	    print "ERROR: A file exists where $home_builder should be.\n";
	}	
	else {
	    my @directory_parts = split(m,/,,$home_builder);
	    my $placement = "/";
	    for (1 .. $#directory_parts) {
		$_ == 1 ? ($placement = "/$directory_parts[$_]")
		    : ($placement = $placement . "/" . $directory_parts[$_]);
		-d $placement or mkdir $placement;
	    }
	}
    }

} # end home_builder