Perl

Get an FTP Listing Entry's Size as a String

Demonstrates the Chilkat Ftp2.GetSizeStr method, which returns the size in bytes of a cached directory-listing entry as a decimal string. The only argument is a zero-based index.

Background: Returning the size as text sidesteps integer-width limits entirely, which is useful in languages without a convenient 64-bit type and whenever you only need to display or log the value. Parse the string when you need to do arithmetic on it; otherwise it is ready to print as-is.

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use strict;
use warnings;
use Chilkat2;

# Demonstrates the Ftp2.GetSizeStr method, which returns the size in bytes of a cached
# directory-listing entry as a decimal string.  The only argument is a zero-based index.

my $ftp = Chilkat2::Ftp2->new;

$ftp->Hostname('ftp.example.com');
$ftp->Username('myFtpLogin');

# Normally you would not hard-code the password in source.  You should instead obtain it
# from an interactive prompt, environment variable, or a secrets vault.
$ftp->Password('myPassword');

my $success = $ftp->Connect();
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}

$success = $ftp->ChangeRemoteDir('public_html');
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}

# GetDirCount retrieves the directory listing on the first call and returns the number of
# entries.  A negative return indicates failure.
my $n = $ftp->GetDirCount();
if ($n < 0) {
    print $ftp->LastErrorText, "\n";
    exit;
}

for my $i (0 .. $n - 1) {
    my $name = $ftp->GetFilename($i);

    # The string form avoids integer-size limits in languages without a convenient 64-bit type.
    my $fileSize = $ftp->GetSizeStr($i);
    print $name, '  ', $fileSize, " bytes\n";
}

$success = $ftp->Disconnect();
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}