Perl

Get a Remote FTP File's Size by Name as a String

Demonstrates the Chilkat Ftp2.GetSizeStrByName method, which returns the size in bytes of a named file in the current remote directory as a decimal string. The only argument is the filename.

Background: Returning the size as text avoids integer-width limits entirely, so this is the safe choice for a file of any size and for languages without a convenient large-integer type. Like the other by-name lookups it takes a bare filename in the current directory; parse the string when you need arithmetic, or use it directly for display.

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Perl

use chilkat();

$success = 0;

#  Demonstrates the Ftp2.GetSizeStrByName method, which returns the size in bytes of a named file
#  in the current remote directory as a decimal string.  The only argument is the filename.

$ftp = chilkat::CkFtp2->new();

$ftp->put_Hostname("ftp.example.com");
$ftp->put_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->put_Password("myPassword");

$success = $ftp->Connect();
if ($success == 0) {
    print $ftp->lastErrorText() . "\r\n";
    exit;
}

$success = $ftp->ChangeRemoteDir("public_html");
if ($success == 0) {
    print $ftp->lastErrorText() . "\r\n";
    exit;
}

#  The string form avoids integer-size limits, so it is safe for files of any size.
$fileSize = $ftp->getSizeStrByName("bigfile.zip");
if ($ftp->get_LastMethodSuccess() == 0) {
    print $ftp->lastErrorText() . "\r\n";
    exit;
}

print "bigfile.zip is " . $fileSize . " bytes" . "\r\n";

$success = $ftp->Disconnect();
if ($success == 0) {
    print $ftp->lastErrorText() . "\r\n";
    exit;
}