Perl

Get a Remote FTP File's Size by Name

Demonstrates the Chilkat Ftp2.GetSizeByName method, which returns the size in bytes of a named file in the current remote directory as a 32-bit integer. The only argument is the filename — a name, not a path. It returns -1 when the file is not found or the size cannot be obtained.

Background: This is the direct way to get one file's size when you already know its name, typically via a SIZE command — no full directory listing required. Because the result is 32-bit, it cannot represent files past about 2 GB; use GetSizeStrByName for large files. The argument must be a bare filename in the current directory, so ChangeRemoteDir to the right place first.

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Perl

use chilkat();

$success = 0;

#  Demonstrates the Ftp2.GetSizeByName method, which returns the size in bytes of a named file in
#  the current remote directory as a 32-bit integer.  The only argument is the filename (a name,
#  not a path).

$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;
}

#  Returns -1 when the file is not found or the size cannot be obtained.  For files that may
#  exceed 2 GB, use GetSizeStrByName (returns a decimal string).
$fileSize = $ftp->GetSizeByName("report.pdf");
if ($fileSize < 0) {
    print "File not found, or size unavailable." . "\r\n";
    exit;
}

print "report.pdf is " . $fileSize . " bytes" . "\r\n";

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