1#!/usr/bin/perl
2#
3# Copyright (C) 2006 OpenWrt.org
4#
5# This is free software, licensed under the GNU General Public License v2.
6# See /LICENSE for more information.
7#
8
9use strict;
10my $PATH = $ARGV[0];
11($PATH and -d $PATH) or die 'invalid path';
12
13my %config;
14
15open FIND, "find \"$PATH\" -name Config.in |";
16while (<FIND>) {
17	chomp;
18	my $input = $_;
19	my $output = $input;
20	my $replace = quotemeta($PATH);
21	$output =~ s/^$replace\///g;
22	$output =~ s/sysdeps\/linux\///g;
23	print STDERR "$input => $output\n";
24	$output =~ /^(.+)\/[^\/]+$/ and system("mkdir -p $1");
25
26	open INPUT, $input;
27	open OUTPUT, ">$output";
28	my ($cur, $default_set, $line);
29	while ($line = <INPUT>) {
30		next if $line =~ /^\s*mainmenu/;
31
32		# FIXME: make this dynamic
33		$line =~ s/default FEATURE_BUFFERS_USE_MALLOC/default FEATURE_BUFFERS_GO_ON_STACK/;
34		$line =~ s/default FEATURE_SH_IS_NONE/default FEATURE_SH_IS_ASH/;
35
36		if ($line =~ /^\s*config\s*([\w_]+)/) {
37			$cur = $1;
38			undef $default_set;
39		}
40		if ($line =~ /^\s*(menu|choice|end|source)/) {
41			undef $cur;
42			undef $default_set;
43		}
44		$line =~ s/^(\s*source\s+)([^\/]+\/)*([^\/]+\/[^\/]+)$/$1$3/;
45		if ($line =~ /^(\s*range\s*)(\w+)(\s+)(\w+)\s*$/) {
46			my $prefix = $1;
47			my $r1 = $2;
48			my $r2 = $4;
49			$r1 =~ s/^([a-zA-Z]+)/BUSYBOX_CONFIG_$1/;
50			$r2 =~ s/^([a-zA-Z]+)/BUSYBOX_CONFIG_$1/;
51			$line = "$prefix$r1 $r2\n";
52		}
53
54		$line =~ s/^(\s*(prompt "[^"]+" if|config|depends|depends on|select|default|default \w if)\s+\!?)([A-Z_])/$1BUSYBOX_CONFIG_$3/g;
55		$line =~ s/(( \|\| | \&\& | \( )!?)([A-Z_])/$1BUSYBOX_CONFIG_$3/g;
56		$line =~ s/(\( ?!?)([A-Z_]+ (\|\||&&))/$1BUSYBOX_CONFIG_$2/g;
57
58		if ($cur) {
59			($cur eq 'LFS') and do {
60				$line =~ s/^(\s*(bool|tristate|string))\s*".+"$/$1/;
61			};
62			if ($line =~ /^\s*default/) {
63				my $c;
64				$default_set = 1;
65				$c = "BUSYBOX_DEFAULT_$cur";
66
67				$line =~ s/^(\s*default\s*)(\w+|"[^"]*")(.*)/$1$c$3/;
68			}
69		}
70
71		print OUTPUT $line;
72	}
73	close OUTPUT;
74	close INPUT;
75}
76close FIND;
77