use Win32;
use Cwd;

print<<EOTitle;
#####################################################################
#
#             Rob's package cloner
#
#             Clones entire packages.
#
#####################################################################

EOTitle

my $source = Win32::GetCwd;
my $sourcePackage;

my $dest   = Win32::GetCwd;
my $destPackage;

my $oldSub;
my $newSub;

my @files;

$sourcePackage = $1 if $source =~ /^.*\\(com\\nortel\\ipc.*)$/;
$sourcePackage =~ s/\\/\./g;
print "The script has found this package to clone: $sourcePackage\n";

$oldSub   = &query( 'Which part of the package name is changing?' );
$newSub   = &query( 'What is that part changing to?             ' );

$destPackage  =  $sourcePackage;
$destPackage  =~ s/$oldSub/$newSub/;

$dest         =~ s/$sourcePackage/$destPackage/;
$dest         =~ s/\./\\/g;

print "\n Cloning\n    package $sourcePackage    into\n    package $destPackage\n";
print "\n Using these directories:\n   $source   and\n   $dest\n";

unless ( &query( "\nOkay?" ) =~ /[YKyk]/ )
{
   die "Okay.  Script aborted.\n";
}

mkdir $dest, 0777;
print Win32::GetCwd;

print "\nCopying package files...\n\n";
system( "xcopy *.java $dest\\" );
print "\ndone.\n";

chdir $dest;
print Win32::GetCwd;


print "\nEditing package files...\n\n";
@files = <*.java>;

foreach ( @files )
{
   print "$_\n";
   &checkFile( $_ );
}

print "\ndone.\n";

print "\nScript done.\n";

sub query
{
   my ($question) = @_;
   my $reply;
   
   print "$question ";
   chomp( $reply = <STDIN> );
   return $reply;
}


sub checkFile
{
   my ($file) = @_;
   
   open( IN, $file ) || (print STDERR "ERROR: cannot read $file\n", next);
   my @data = <IN>;
   close IN;
   
   foreach ( @data )
   {
      if (/^\s*package\s*$sourcePackage\s*;$/)
      {
         print "  - repackaged:   old: $_";
         $_ = "package $destPackage;\n";
         print "                  new: $_";
      }
      if ( /^\s*import\s*/ && /$oldSub/)
      {
         print "  - import fixed: old: $_";
         s/$oldSub/$newSub/;
         print "                  new: $_";
      }
   }
   
   open( OUT, ">$file" ) || (print STDERR "ERROR: cannot write $file\n", next);
   print OUT @data;
   close OUT;
}