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package Spline::Netstring;
use strict;
use warnings;
our @EXPORT = qw(
netstring_read
netstring_write
);
sub read_length($) {
my $fd = shift;
my $length;
local $/ = ':';
$length = <$fd>;
die "Cannot read netstring length" unless defined($length);
chomp $length;
return $length;
}
sub netstring_read($) {
my $fd = shift;
my ($length, $data);
$length = read_length($fd);
if (read($fd, $data, $length) == $length) {
(getc() eq ',') or die "Closing , missing";
}
else {
die 'Received only ' . length($data) . " of $length bytes";
}
return $data;
}
sub netstring_write($$) {
my ($fd, $data) = @_;
print $fd length($data).':'.$data.',';
}
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