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|
##
## Package to read/write on BINARY data connections
##
package Net::FTP::I;
use vars qw(@ISA $buf $VERSION);
use Carp;
require Net::FTP::dataconn;
@ISA = qw(Net::FTP::dataconn);
$VERSION = "1.12";
sub read {
my $data = shift;
local *buf = \$_[0];
shift;
my $size = shift || croak 'read($buf,$size,[$timeout])';
my $timeout = @_ ? shift: $data->timeout;
my $n;
if ($size > length ${*$data} and !${*$data}{'net_ftp_eof'}) {
$data->can_read($timeout)
or croak "Timeout";
my $blksize = ${*$data}{'net_ftp_blksize'};
$blksize = $size if $size > $blksize;
unless ($n = sysread($data, ${*$data}, $blksize, length ${*$data})) {
return undef unless defined $n;
${*$data}{'net_ftp_eof'} = 1;
}
}
$buf = substr(${*$data}, 0, $size);
$n = length($buf);
substr(${*$data}, 0, $n) = '';
${*$data}{'net_ftp_bytesread'} += $n;
$n;
}
sub write {
my $data = shift;
local *buf = \$_[0];
shift;
my $size = shift || croak 'write($buf,$size,[$timeout])';
my $timeout = @_ ? shift: $data->timeout;
# If the remote server has closed the connection we will be signal'd
# when we write. This can happen if the disk on the remote server fills up
local $SIG{PIPE} = 'IGNORE'
unless ($SIG{PIPE} || '') eq 'IGNORE'
or $^O eq 'MacOS';
my $sent = $size;
my $off = 0;
my $blksize = ${*$data}{'net_ftp_blksize'};
while ($sent > 0) {
$data->can_write($timeout)
or croak "Timeout";
my $n = syswrite($data, $buf, $sent > $blksize ? $blksize : $sent, $off);
return undef unless defined($n);
$sent -= $n;
$off += $n;
}
$size;
}
1;
|
