#!/usr/bin/perl -w
# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
# #(C)IBM Corp
package imgutils;

use strict;
use warnings "all";

use File::Basename;
use File::Path;
use Cwd qw(realpath);

sub get_profile_def_filename {
   my $osver = shift;
   my $profile = shift;
   my $arch = shift;

   my $tmp_base=shift;
   my $base=realpath($tmp_base); #get the full path
   if (!$base) { $base=$tmp_base;}
   
   my $ext=shift;
   
   my $dotpos;
   
   # OS version on s390x can contain 'sp', e.g. sles11sp1
   # If OS version contains 'sp', get the index of 'sp' instead of '.'
   if ($osver =~ /sles/ && $osver =~ /sp/) {
      $dotpos = rindex($osver, "sp");
   } else {
      $dotpos = rindex($osver, ".");
   }
   
   my $osbase = substr($osver, 0, $dotpos);
   if (-r "$base/$profile.$osver.$arch.$ext") {
      return "$base/$profile.$osver.$arch.$ext";
   } elsif (-r "$base/$profile.$osbase.$arch.$ext") {
      return "$base/$profile.$osbase.$arch.$ext";
   } elsif (-r "$base/$profile.$arch.$ext") {
      return "$base/$profile.$arch.$ext";
   } elsif (-r "$base/$profile.$osver.$ext") {
      return "$base/$profile.$osver.$ext";
   } elsif (-r "$base/$profile.$osbase.$ext") {
      return "$base/$profile.$osbase.$ext";
   } elsif (-r "$base/$profile.$ext") {
      return "$base/$profile.$ext";
   } 

   return "";
}

sub include_file
{
   my $file = shift;
   my $idir = shift;
   my @text = ();
   unless ($file =~ /^\//) {
       $file = $idir."/".$file;
   }
   
   open(INCLUDE,$file) || 
       return "#INCLUDEBAD:cannot open $file#";
   
   while(<INCLUDE>) {
       chomp($_);
       s/\s+$//;  #remove trailing spaces
       next if /^\s*$/; #-- skip empty lines
       push(@text, $_);
   }
   
   close(INCLUDE);
   
   return join(',', @text);
}

sub get_package_names {
   my $plist_file_name=shift;
   my %pkgnames=();
   my @tmp_array=();


   if ($plist_file_name) {
     my $pkgfile;
     open($pkgfile,"<","$plist_file_name");
     while (<$pkgfile>) {
        chomp;
	s/\s+$//;   #remove trailing white spaces
	next if /^\s*$/; #-- skip empty lines
	push(@tmp_array,$_);
     }
     close($pkgfile);

     if ( @tmp_array > 0) {
        my $pkgtext=join(',',@tmp_array);
      
        #handle the #INLCUDE# tag recursively
        my $idir = dirname($plist_file_name);
        my $doneincludes=0;
	while (not $doneincludes) {
	    $doneincludes=1;
	    if ($pkgtext =~ /#INCLUDE:[^#^\n]+#/) {
		$doneincludes=0;
		$pkgtext =~ s/#INCLUDE:([^#^\n]+)#/include_file($1,$idir)/eg;
	    }
	}
     
        #print "pkgtext=$pkgtext\n";
	my @tmp=split(',', $pkgtext);
        my $pass=1;
	foreach (@tmp) {
	    my $idir;
	    if (/^--/) {	
		$idir="POST_REMOVE";   #line starts with -- means the package should be removed after otherpkgs are installed
		s/^--//;
            } elsif  (/^-/) {
		$idir="PRE_REMOVE"; #line starts with single - means the package should be removed before otherpkgs are installed
		s/^-//;
            } elsif  (/^#NEW_INSTALL_LIST#/) {
                $pass++;
                next;
            } elsif  (/^#/) {
                # ignore all other comment lines
                next;
            } else { 
		$idir=dirname($_); 
	    }
	    my $fn=basename($_);
	    if (exists($pkgnames{$pass}{$idir})) {
		my $pa=$pkgnames{$pass}{$idir};
		push(@$pa, $fn);
	    } else {
		$pkgnames{$pass}{$idir}=[$fn];
	    }
	}
     }
   }

   return %pkgnames;
}

1;