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| | ##
## Package to read/write on ASCII data connections
##
package Net::FTP::A;
use strict;
use vars qw(@ISA $buf $VERSION);
use Carp;
require Net::FTP::dataconn;
@ISA = qw(Net::FTP::dataconn);
$VERSION = "1.10"; # $Id: //depot/libnet/Net/FTP/A.pm#10 $
sub read {
my $data = shift;
local *buf = \$_[0]; shift;
my $size = shift || croak 'read($buf,$size,[$offset])';
my $timeout = @_ ? shift : $data->timeout;
if (length(${*$data}) < $size) {
my $blksize = ${*$data}{'net_ftp_blksize'};
$blksize = $size if $size > $blksize;
my $l = 0;
my $n;
READ:
{
my $readbuf = defined(${*$data}{'net_ftp_cr'}) ? '\015' : '';
$data->can_read($timeout) or
croak "Timeout";
if ($n = sysread($data, $readbuf, $blksize, length $readbuf)) {
${*$data}{'net_ftp_bytesread'} += $n;
${*$data}{'net_ftp_cr'} = substr($readbuf,-1) eq "\015"
? chop($readbuf)
: undef;
}
else {
return undef
unless defined $n;
${*$data}{'net_ftp_eof'} = 1;
}
$readbuf =~ s/\015\012/\n/sgo;
${*$data} .= $readbuf;
unless (length(${*$data})) {
redo READ
if($n > 0);
$size = length(${*$data})
if($n == 0);
}
}
}
$buf = substr(${*$data},0,$size);
substr(${*$data},0,$size) = '';
$size;
}
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;
}
$size;
}
1;
|