Node.js

Get an FTP Listing Entry's Size (32-bit)

Demonstrates the Chilkat Ftp2.GetSize method, which returns the size in bytes of a cached directory-listing entry as a 32-bit integer. The only argument is a zero-based index. It returns -1 when the index is invalid or the size is unavailable.

Background: The size comes from the cached listing, so reading it for every entry costs no extra round trips. A 32-bit result cannot represent files past about 2 GB, so use GetSize64 (or GetSizeStr) when large files are possible. Directories often report no meaningful size and come back as -1, which is why the -1 case is worth handling rather than printing blindly.

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function chilkatExample() {

    var success = false;

    //  Demonstrates the Ftp2.GetSize method, which returns the size in bytes of a cached
    //  directory-listing entry as a 32-bit integer.  The only argument is a zero-based index.

    var ftp = new chilkat.Ftp2();

    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";

    success = ftp.Connect();
    if (success == false) {
        console.log(ftp.LastErrorText);
        return;
    }

    success = ftp.ChangeRemoteDir("public_html");
    if (success == false) {
        console.log(ftp.LastErrorText);
        return;
    }

    //  GetDirCount retrieves the directory listing on the first call and returns the number of
    //  entries.  A negative return indicates failure.
    var n = ftp.GetDirCount();
    if (n < 0) {
        console.log(ftp.LastErrorText);
        return;
    }

    var i;
    for (i = 0; i <= n - 1; i++) {
        var name = ftp.GetFilename(i);

        //  GetSize returns -1 when the index is invalid or the size is unavailable (for example for a
        //  directory).  Use GetSize64 for files that may exceed 2 GB.
        var fileSize = ftp.GetSize(i);
        console.log(name + "  " + fileSize + " bytes");
    }

    success = ftp.Disconnect();
    if (success == false) {
        console.log(ftp.LastErrorText);
        return;
    }


}

chilkatExample();