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|
#!/usr/bin/perl -w
#
# Helper script for debian-cd EFI CD creation
#
# Parse the Isolinux boot menus and create matching grub menus and submenus
#
# Complicated by the way grub theming works - we need to create a
# separate grub theme per submenu simply so that we can describe the
# current (sub)menu appropriately.
use strict;
use File::Path qw(make_path);
my $isolinuxdir = shift or die "Need to know where the isolinux directory is!\n";
my $outdir = shift or die "Need to know where to write output!\n";
my $grub_theme = shift or die "Need input file location for base grub theme!\n";
my $tl_distro= shift or die "Need a top-level distro name (e.g. Debian)\n";
my $tl_kernel= shift or die "Need a top-level kernel (e.g. GNU/Linux)\n";
my $tl_version= shift or die "Need a top-level version (e.g. 7.0)\n";
my $theme_dir = "$outdir/boot/grub/theme";
my @cpp_and_opts = ('cpp',
'-traditional',
'-undef',
'-P',
'-C',
'-Wall',
'-nostdinc');
my @lines;
my @menus;
my $incdepth = 0;
my @menu_number = (1,0,0,0,0);
my @menu_title = ('', '', '', '', '');
my $menudepth = 0;
my $pre = "";
my %menu;
sub parse_file {
my $file = shift;
$incdepth++;
# for(my $i = 0; $i < $incdepth ; $i++) {
# print STDERR " ";
# }
# print STDERR "parsing $isolinuxdir/$file\n";
open(my $fh, "< $isolinuxdir/$file") or return;
while (my $line = <$fh>) {
chomp $line;
if ($line =~ /^\s*include\ (.*\.cfg)/) {
parse_file($1);
} else {
push(@lines, $line);
}
}
close $fh;
$incdepth--;
}
sub print_indent {
my $text = shift;
my $i = 1;
while ($i++ < $menudepth) {
print " ";
}
print $text;
}
sub print_kernel {
my $t = shift;
my %k = %{$t};
my $initrd;
# Only print 64-bit kernels
if ($k{"kernel"} =~ /amd/) {
$k{"label"} =~ s/\^//;
if ($k{"append"} =~ s? (initrd=\S+)??) {
$initrd = $1;
$initrd =~ s?^.*initrd=??;
}
print_indent "menuentry '$pre" . $k{"label"} . "' {\n";
print_indent " set background_color=black\n";
print_indent " linux " . $k{"kernel"} . " " . $k{"append"} . "\n";
print_indent " initrd $initrd\n";
print_indent "}\n";
}
}
sub debug {
# print_indent $menudepth . " " . $menu{"number"} . ": " . $menu{"label"} .
# " '" . $menu{"title"} . "'\n";
}
sub create_theme_file {
my $filename = shift;
my @args;
push(@args, @cpp_and_opts);
push(@args, "-DTITLE=\"$tl_distro $tl_kernel $tl_version\"");
for (my $i = 0; $i < $menudepth; $i++) {
push(@args, "-DMENU$i=\"" . $menu_title[$i] . "\"");
}
push(@args, "$grub_theme");
open(IN, "-|", @args) or die "Can't open cpp input: $!\n";
open(OUT, ">", "$theme_dir/$filename")
or die "Can't create theme file $theme_dir/$filename: $!\n";
while (<IN>) {
print OUT "$_";
}
close(IN);
close(OUT);
}
make_path($theme_dir);
if (! -d $theme_dir) {
die "Can't make theme dir $theme_dir: $!\n";
}
parse_file("isolinux.cfg");
$menu{"number"} = "1";
$menu{"label"} = "top";
$menu{"title"} = "$tl_distro $tl_kernel Installer menu";
$menu_title[$menudepth] = $menu{"title"};
my %kernel;
my $in_kernel = 0;
my $new_menu = 0;
$menudepth++;
debug();
print_indent "set theme=/boot/grub/theme/" . $menu{"number"} . "\n";
create_theme_file($menu{"number"});
foreach my $line(@lines) {
if ($line =~ /^\s*menu begin\ (\S+)/) {
$menu_number[$menudepth]++;
$new_menu = 1;
my $mn_string = "";
for(my $i = 0; $i <= $menudepth ; $i++) {
$mn_string .= "$menu_number[$i]";
if ($i < $menudepth) {
$mn_string .= "-";
}
}
$menu{"number"} = $mn_string;
$menu{"label"} = $1;
if ($in_kernel) {
print_kernel(\%kernel);
undef %kernel;
$in_kernel = 0;
}
} elsif ($line =~ /^\s*menu end/) {
if ($in_kernel) {
print_kernel(\%kernel);
undef %kernel;
$in_kernel = 0;
}
$menu_number[$menudepth] = 0;
$menudepth--;
if ($menudepth) {
print_indent "}\n";
}
if ($menudepth > 1) {
$pre = "... ";
} else {
$pre = "";
}
} elsif ($line =~ /^\s*menu title (.*$)/) {
if ($in_kernel) {
print_kernel(\%kernel);
undef %kernel;
$in_kernel = 0;
}
$menu{"title"} = $1;
if ($new_menu) {
print_indent "submenu '$pre" . $menu{"title"} . " ...' {\n";
$menu_title[$menudepth] = $menu{"title"};
$menudepth++;
if ($menudepth > 1) {
$pre = "... ";
} else {
$pre = "";
}
debug();
print_indent "set menu_color_normal=cyan/blue\n";
print_indent "set menu_color_highlight=white/blue\n";
print_indent "set theme=/boot/grub/theme/" . $menu{"number"} . "\n";
create_theme_file($menu{"number"});
$new_menu = 0;
}
} elsif ($line =~ /^label (\S*(rescue|install|auto|expert)\S*)/) {
if ($in_kernel) {
print_kernel(\%kernel);
undef %kernel;
}
$kernel{"ref"} = $1;
$in_kernel = 1;
} elsif ($line =~ /menu label (.*)$/ && $in_kernel) {
$kernel{"label"} = $1;
} elsif ($line =~ /menu default/ && $in_kernel) {
$kernel{"default"} = 1;
} elsif ($line =~ /kernel (.*)$/ && $in_kernel) {
$kernel{"kernel"} = $1;
} elsif ($line =~ /append (.*)$/ && $in_kernel) {
$kernel{"append"} = $1;
} else {
#print "$line\n";
}
}
if ($in_kernel) {
print_kernel(\%kernel);
undef %kernel;
}
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