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package MDV::Draklive::Utils;
use MDK::Common;
use run_program;
use IPC::Open3;
use IO::Select;
use Exporter;
our @ISA = qw(Exporter);
our @EXPORT = qw(directory_usage run_ run_foreach);
sub directory_usage { first(split /\s/, `du -sb $_[0]`) }
#- expand only if the pattern contains '*'
#- and matches dot characters (like shell dotglob)
sub glob__ {
my ($pattern) = @_;
$pattern =~ /\*/ ? glob_($pattern) : $pattern;
}
sub run_ {
my $options = ref $_[0] eq 'HASH' ? shift @_ : {};
my @cmd = @_;
$options->{timeout} ||= 'never';
my $setarch = delete $options->{setarch};
unshift @cmd, 'setarch', $setarch if $setarch;
print STDERR "running " . (exists $options->{root} && "(in chroot) ") . join(' ', @cmd) . "\n";
run_program::raw($options, @cmd);
}
sub run_foreach {
my ($foreach, @command) = @_;
print STDERR "running " . join(' ', @command) . "\n";
my $pid = open3(my $cmd_in, my $cmd_out, undef, @command);
my $selector = IO::Select->new($cmd_out);
while (my @ready = $selector->can_read) {
foreach my $fh (@ready) {
local $_ = scalar<$fh>;
return if /^open3:/;
$foreach->();
$selector->remove($fh) if eof($fh);
}
}
close($cmd_out);
close($cmd_in);
return waitpid($pid, 0) > 0 && !($? >> 8);
}
sub mtools_run_ {
local $ENV{MTOOLS_SKIP_CHECK} = 1;
&run_;
}
sub device_allocate_file {
my ($device, $size) = @_;
run_('dd', "of=$device", 'count=0', 'bs=1', "seek=" . removeXiBSuffix($size));
}
#- format $device as type $type
sub device_mkfs {
my ($device, $type) = @_;
if ($type eq 'vfat') {
run_('mkfs.vfat', $device);
} elsif (member($type, 'ext2', 'ext3')) {
run_("mkfs.$type", "-m", 0, if_(!-b $device, '-F'), $device);
} else {
die "unable to mkfs for unsupported media type $type\n";
}
}
1;
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