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##
## Package to read/write on ASCII data connections
##
package Net::FTP::A;
use 5.008001;
use strict;
use warnings;
use Carp;
use Net::FTP::dataconn;
our @ISA = qw(Net::FTP::dataconn);
our $VERSION = "3.13";
our $buf;
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}) < $size && !${*$data}{'net_ftp_eof'}) {
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
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) = '';
length $buf;
}
sub write {
my $data = shift;
local *buf = \$_[0];
shift;
my $size = shift || croak 'write($buf,$size,[$timeout])';
my $timeout = @_ ? shift: $data->timeout;
my $nr = (my $tmp = substr($buf, 0, $size)) =~ tr/\r\n/\015\012/;
$tmp =~ s/(?<!\015)\012/\015\012/sg if $nr;
$tmp =~ s/^\015// if ${*$data}{'net_ftp_outcr'};
${*$data}{'net_ftp_outcr'} = substr($tmp, -1) eq "\015";
# 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 $len = length($tmp);
my $off = 0;
my $wrote = 0;
my $blksize = ${*$data}{'net_ftp_blksize'};
while ($len) {
$data->can_write($timeout)
or croak "Timeout";
$off += $wrote;
$wrote = syswrite($data, substr($tmp, $off), $len > $blksize ? $blksize : $len);
return
unless defined($wrote);
$len -= $wrote;
}
$size;
}
1;