(Swift 3,4,5...) Check if File Exists

Demonstrates how to check to see if a file exists.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let sftp = CkoSFtp()!

    // Connect to the SSH server.  
    var hostname: String? = "sftp.example.com"
    var port: Int = 22
    var success: Bool = sftp.connect(hostname, port: port)
    if success != true {
        print("\(sftp.lastErrorText!)")
        return
    }

    // Authenticate with the SSH server.  Chilkat SFTP supports
    // both password-based authenication as well as public-key
    // authentication.  This example uses password authenication.
    success = sftp.authenticatePw("myLogin", password: "myPassword")
    if success != true {
        print("\(sftp.lastErrorText!)")
        return
    }

    // After authenticating, the SFTP subsystem must be initialized:
    success = sftp.initializeSftp()
    if success != true {
        print("\(sftp.lastErrorText!)")
        return
    }

    // Check to see if a file exists

    // The return value is one of the following values:
    // -1: Unable to check. Examine the LastErrorText to determine the reason for failure.
    // 0: File does not exist.
    // 1: The regular file exists.
    // 2: It exists, but it is a directory.
    // 3: It exists, but it is a symlink (only possible if followLinks is false)
    // 4: It exists, but it is a special filesystem entry type.
    // 5: It exists, but it is an unkown filesystem entry type.
    // 6: It exists, but it is an socket filesystem entry type.
    // 7: It exists, but it is an char device entry type.
    // 8: It exists, but it is an block device entry type.
    // 9: It exists, but it is an FIFO entry type.

    var followLinks: Bool = true
    var status: Int = sftp.fileExists("someDir/someFile.txt", followLinks: followLinks).intValue
    if status < 0 {
        print("\(sftp.lastErrorText!)")
        return
    }

    print("status = \(status)")

    print("Success")

}