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#! /usr/bin/perl -w
#
# VFS to manage the gputils archives.
# Written by Molnár Károly (proton7@freemail.hu) 2012
#

my %month = ('jan' => '01', 'feb' => '02', 'mar' => '03',
             'apr' => '04', 'may' => '05', 'jun' => '06',
             'jul' => '07', 'aug' => '08', 'sep' => '09',
             'oct' => '10', 'nov' => '11', 'dec' => '12');

my @PATHS = ('/usr/bin/gplib', '/usr/local/bin/gplib');

my $gplib = '';

foreach my $i (@PATHS)
{
    if (-x $i)
    {
        $gplib = $i;
        last;
    }
}

if ($gplib eq '')
{
    print STDERR "\a\t$0 : Gplib not found!\n";
    exit(1);
}

my $cmd = shift;
my $archive = shift;

#-------------------------------------------------------------------------------

sub mc_ulib_fs_list
{
    open(PIPE, "$gplib -tq $archive |") || die("Error in $gplib -tq");

my($dev, $inode, $mode, $nlink, $uid, $gid) = stat($archive);

while (<PIPE>)
    {
        chomp;
        my @w = split(/\s+/o);
        my $fname = $w[0];

$fname =~ s|\\|/|g;

printf("-rw-r--r-- 1 %s %s %d %s-%02u-%s %s %s\n",
           $uid, $gid, int($w[1]), $month{lc($w[4])}, $w[5], $w[7], substr($w[6], 0, 5), $fname);
    }
    close (PIPE);
}

#-------------------------------------------------------------------------------

sub mc_ulib_fs_copyin
{
    system("$gplib -r $archive $_[0]");
    my $ret = $?;

if ($ret)
    {
        die("Error in: $gplib -r");
    }
}

#-------------------------------------------------------------------------------

sub mc_ulib_fs_copyout
{
    my($module, $fname) = @_;
    my $tmpdir = $ENV{'TMPDIR'};

$tmpdir = '/tmp' if (! defined $tmpdir or $tmpdir eq '');

open(PIPE, "$gplib -tq $archive |") || die("Error in: $gplib -tq");

while (<PIPE>)
    {
        chomp;
        my @w = split(/\s+/o);
        my $module_orig = $w[0];
        my $count = () = ($module_orig =~ /(\\)/g);
        my $md = $module_orig;

$md =~ s|\\|/|g;

if ($module eq $md)
        {
            return if ($count);
        }
    }

close (PIPE);

chdir($tmpdir);
    system("$gplib -x $archive $module");
    my $ret = $?;

if ($ret)
    {
        die("Error in: $gplib -x");
    }

rename($module, $fname) || die("Error in: rename($module, $fname)");
}

#-------------------------------------------------------------------------------

sub mc_ulib_fs_rm
{
    system("$gplib -d $archive $_[0]");
    my $ret = $?;

if ($ret)
    {
        die("Error in: $gplib -d");
    }
}

################################################################################

if ($cmd eq 'list')
{
    mc_ulib_fs_list(@ARGV);
}
elsif ($cmd eq 'copyin')
{
    mc_ulib_fs_copyin(@ARGV);
}
elsif ($cmd eq 'copyout')
{
    mc_ulib_fs_copyout(@ARGV);
}
elsif ($cmd eq 'rm')
{
    mc_ulib_fs_rm(@ARGV);
}
else
{
    exit(1);
}

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