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| | ##
## Package to read/write on ASCII data connections
##
package Net::FTP::A;
use vars qw(@ISA $buf $VERSION);
use Carp;
require Net::FTP::dataconn;
@ISA = qw(Net::FTP::dataconn);
$VERSION = "1.09"; # $Id: //depot/libnet/Net/FTP/A.pm#9 $
sub new
{
my $class = shift;
my $data = $class->SUPER::new(@_) || return undef;
${*$data}{'net_ftp_last'} = " ";
$data;
}
sub read
{
my $data = shift;
local *buf = \$_[0]; shift;
my $size = shift || croak 'read($buf,$size,[$offset])';
my $timeout = @_ ? shift : $data->timeout;
${*$data} ||= "";
my $l = 0;
READ:
{
$data->can_read($timeout) or
croak "Timeout";
$buf = ${*$data};
my $n = sysread($data, $buf, $size, length $buf);
return undef
unless defined $n;
${*$data}{'net_ftp_bytesread'} += $n;
${*$data}{'net_ftp_eof'} = 1 unless $n;
${*$data} = substr($buf,-1) eq "\015" ? chop($buf) : "";
$buf =~ s/\015\012/\n/sgo;
$l = length($buf);
redo READ
if($l == 0 && $n > 0);
if($n == 0 && $l == 0)
{
$buf = ${*$data};
${*$data} = "";
$l = length($buf);
}
}
return $l;
}
sub write
{
my $data = shift;
local *buf = \$_[0]; shift;
my $size = shift || croak 'write($buf,$size,[$timeout])';
my $timeout = @_ ? shift : $data->timeout;
$data->can_write($timeout) or
croak "Timeout";
(my $tmp = substr($buf,0,$size)) =~ s/\n/\015\012/sg;
# 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';
my $len = length($tmp);
my $off = 0;
my $wrote = 0;
while($len) {
$off += $wrote;
$wrote = syswrite($data, substr($tmp,$off), $len);
return undef
unless defined($wrote);
$len -= $wrote;
}
return $size;
}
1;
|