1 ## $Id: //depot/libnet/Net/FTP/I.pm#13 $
2 ## Package to read/write on BINARY data connections
7 use vars qw(@ISA $buf $VERSION);
10 require Net::FTP::dataconn;
12 @ISA = qw(Net::FTP::dataconn);
17 local *buf = \$_[0]; shift;
18 my $size = shift || croak 'read($buf,$size,[$timeout])';
19 my $timeout = @_ ? shift : $data->timeout;
23 if ($size > length ${*$data} and !${*$data}{'net_ftp_eof'}) {
24 $data->can_read($timeout) or
27 my $blksize = ${*$data}{'net_ftp_blksize'};
28 $blksize = $size if $size > $blksize;
30 unless ($n = sysread($data, ${*$data}, $blksize, length ${*$data})) {
31 return undef unless defined $n;
32 ${*$data}{'net_ftp_eof'} = 1;
36 $buf = substr(${*$data},0,$size);
40 substr(${*$data},0,$n) = '';
42 ${*$data}{'net_ftp_bytesread'} += $n;
49 local *buf = \$_[0]; shift;
50 my $size = shift || croak 'write($buf,$size,[$timeout])';
51 my $timeout = @_ ? shift : $data->timeout;
53 # If the remote server has closed the connection we will be signal'd
54 # when we write. This can happen if the disk on the remote server fills up
56 local $SIG{PIPE} = 'IGNORE' unless $^O eq 'MacOS';
60 my $blksize = ${*$data}{'net_ftp_blksize'};
62 $data->can_write($timeout) or
65 my $n = syswrite($data, $buf, $sent > $blksize ? $blksize : $sent ,$off);
66 return undef unless defined($n);