#! /usr/bin/perl -W

use strict;

my $kconfig_src_file = shift;
my $kconfig_obj_file = shift;

my %pfs;
foreach my $f (@ARGV) {
  my $bsp_name;
  $bsp_name = $1 if $f =~ /\/bsp\/([^\/]+)\//;
  open(X, $f) || die "Cannot open $f: $!";
  my $pf;
  my $pfdescr;
  my @pfselect;
  my @pfdep;
  while ($_=<X>) {
    $pf       = $1 if /^\s*\#\s*PF:\s*(\S+)/;
    $pfdescr  = $1 if /^\s*\#\s*PFDESCR:\s*(.+)/;
    push(@pfselect, split(/\s+/, $1)) if /^\s*\#\s*PFSELECT:\s*(.+)/;
    push(@pfdep,    split(/\s+/, $1)) if /^\s*\#\s*PFDEPENDS:\s*(.+)/;

    if (/^\s*\#\s*PFCAN:\s*(.+)/)
      {
        push(@pfselect, split(/\s+/, $1));
        print "WARN: $f:$.: PFCAN is deprecated, use PFSELECT\n";
      }
  }
  $pfs{$pf}{file}      = $f;
  $pfs{$pf}{desc}      = $pfdescr;
  @{$pfs{$pf}{select}} = @pfselect;
  @{$pfs{$pf}{dep}}    = @pfdep;
  $pfs{$pf}{name}      = $bsp_name;
  close X;
}
open(IN, "$kconfig_src_file") || die "Cannot open $kconfig_src_file: $!";
open(OUT, ">$kconfig_obj_file") || die "Cannot open $kconfig_obj_file: $!";
while ($_=<IN>) {
  print OUT;
  if (/^\s*\#\s*PF_INCLUDE\W/) {
    foreach my $i (keys %pfs) {
      print OUT "if PF_$i\n";
      if (defined $pfs{$i}{name}) {
	print OUT "config BSP_NAME\n	string\n";
	print OUT "	depends on PF_$i\n";
	print OUT "	default \"$pfs{$i}{name}\"\n";
      }
      print OUT "source \"$pfs{$i}{file}\"\nendif\n";
    }
  }
  if (/^\s*\#\s*PF_CHOICE\W/) {
    foreach my $i (keys %pfs) {
      if (defined $pfs{$i}{desc}) {
	print OUT "config PF_$i\n	bool \"$pfs{$i}{desc}\"\n";
      } else {
	print OUT "config PF_$i\n	bool \"$i Platform\"\n";
      }
      print OUT "	depends on $_\n" foreach (@{$pfs{$i}{dep}});
      print OUT "	select $_\n" foreach (@{$pfs{$i}{select}});
      print OUT "\n";
    }
  }
}
close IN;
close OUT;