Swift

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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Swift


func chilkatTest() {
    var success: Bool = 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.

    let ftp = CkoFtp2()!

    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 {
        print("\(ftp.lastErrorText!)")
        return
    }

    success = ftp.changeRemoteDir(relativeDirPath: "public_html")
    if success == false {
        print("\(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: Int = ftp.getDirCount().intValue
    if n < 0 {
        print("\(ftp.lastErrorText!)")
        return
    }

    var i: Int
    for i = 0; i <= n - 1; i++ {
        var name: String? = ftp.getFilename(index: 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: Int = ftp.getSize(index: i).intValue
        print("\(name!)  \(fileSize) bytes")
    }

    success = ftp.disconnect()
    if success == false {
        print("\(ftp.lastErrorText!)")
        return
    }


}