(Swift 3,4,5...) SharePoint -- Update the Contents of a File (PUT)

Demonstrates how to update the contents of a SharePoint file.

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

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

    let http = CkoHttp()!

    // If SharePoint Windows classic authentication is used, then set the 
    // Login, Password, LoginDomain, and NtlmAuth properties.
    http.login = "SHAREPOINT_USERNAME"
    http.password = "SHAREPOINT_PASSWORD"
    http.loginDomain = "SHAREPOINT_NTLM_DOMAIN"
    http.ntlmAuth = true

    // The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
    // If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
    // establish the cookie as shown at SharePoint Online Authentication

    // Indicate that we want a JSON reply
    http.accept = "application/json;odata=verbose"

    // Update /Documents/ChilkatTest/sample.docx with new content...
    let req = CkoHttpRequest()!
    req.httpVerb = "POST"
    req.path = "/_api/web/GetFileByServerRelativeUrl('/Documents/ChilkatTest/sample.docx')/$value"
    // Give the location of the file to be uploaded.  
    // Note: The file is not loaded into memory at this point.  It is never fully loaded
    // into memory.  Instead, the file data is streamed directly from the file when
    // when the upload occurs.
    req.streamBody(fromFile: "qa_data/msword/sample.docx")

    // We need to add a form digest value in the X-RequestDigest header field.
    // See this example for details on
    // how to get (and cache) a form digest value
    req.addHeader("X-RequestDigest", value: "SHAREPOINT_FORM_DIGEST")

    // Also need to add this header..
    req.addHeader("X-HTTP-Method", value: "PUT")

    // Upload..
    var bUseTls: Bool = true
    var resp: CkoHttpResponse? = http.synchronousRequest("SHAREPOINT_HTTPS_DOMAIN", port: 443, ssl: bUseTls, req: req)
    if http.lastMethodSuccess != true {
        print("\(http.lastErrorText!)")
        return
    }

    // A successful update will return a 204 status code with an empty body.
    // A non-successful update will return a JSON response body..
    if resp!.statusCode.intValue != 204 {
        print("Response status code = \(resp!.statusCode.intValue)")
        let json = CkoJsonObject()!
        json.load(resp!.bodyStr)
        json.emitCompact = false
        print("\(json.emit()!)")
        print("Failed")
        resp = nil
        return
    }

    resp = nil

    print("Success.")

}