1 files changed, 80 insertions, 0 deletions
diff --git a/lib/Net/FTP/I.pm b/lib/Net/FTP/I.pm
new file mode 100644
index 0000000..449bb99
--- /dev/null
+++ b/lib/Net/FTP/I.pm
@@ -0,0 +1,80 @@
+## 
+## 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;