13
'verbose|v+' => sub { $verbosity++; },
14
'quiet|q+' => sub { $verbosity--; },
15
'blksize|s=o' => sub { $blksize = $_[1]; },
16
'byte|b=o' => sub { $byte = $_[1]; },
19
Getopt::Long::Configure ( 'bundling', 'auto_abbrev' );
20
GetOptions ( %opts ) or die "Could not parse command-line options\n";
22
while ( my $filename = shift ) {
23
die "$filename is not a file\n" unless -f $filename;
24
my $oldsize = -s $filename;
25
my $padsize = ( ( -$oldsize ) % $blksize );
26
my $newsize = ( $oldsize + $padsize );
28
if ( $verbosity >= 1 ) {
29
printf "Padding %s from %d to %d bytes with %d x 0x%02x\n",
30
$filename, $oldsize, $newsize, $padsize, $byte;
33
sysopen ( my $fh, $filename, ( O_WRONLY | O_APPEND ) )
34
or die "Could not open $filename for appending: $!\n";
35
syswrite $fh, ( chr ( $byte ) x $padsize )
36
or die "Could not append to $filename: $!\n";
39
truncate $filename, $newsize
40
or die "Could not resize $filename: $!\n";
42
die "Failed to pad $filename\n"
43
unless ( ( ( -s $filename ) % $blksize ) == 0 );