Swift

Upload Binary File from Memory

See more Google Drive Examples

This example demonstrates how to upload a binary file from memory. It uploads the file to a subdirectory of our choosing. Swift

func chilkatTest() {
    var success: Bool = false

    success = true

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example uses a previously obtained access token having permission for the 
    // Google Drive scope.

    let gAuth = CkoAuthGoogle()!
    gAuth.accessToken = "GOOGLE-DRIVE-ACCESS-TOKEN"

    let rest = CkoRest()!

    // Connect using TLS.
    var bAutoReconnect: Bool = true
    success = rest.connect(hostname: "www.googleapis.com", port: 443, tls: true, autoReconnect: bAutoReconnect)

    // Provide the authentication credentials (i.e. the access token)
    rest.setAuthGoogle(authProvider: gAuth)

    // -------------------------------------------------------------------------
    // A multipart upload to Google Drive needs a multipart/related Content-Type
    rest.addHeader(name: "Content-Type", value: "multipart/related")

    // Specify each part of the request.

    // The 1st part is JSON with information about the file.
    rest.partSelector = "1"
    rest.addHeader(name: "Content-Type", value: "application/json; charset=UTF-8")

    // Construct the JSON that will contain the metadata about the file data to be uploaded...
    let json = CkoJsonObject()!
    json.appendString(name: "name", value: "hedgehogs.jpg")
    json.appendString(name: "description", value: "A cute photo of two hedgehogs.")
    json.appendString(name: "mimeType", value: "image/jpeg")

    // To place the file in a folder, we must add a parents[] array to the JSON
    // and add the folder ID.  
    // In a previous example (see Build Local Metadata Cache
    // we built a local cache to make it easy to lookup file IDs given a file path.
    // Let's find the file ID for the folder "testFolder/abc/123"
    let gdCache = CkoCache()!
    gdCache.level = 0
    gdCache.addRoot(path: "C:/ckCache/googleDrive")

    var folderId: String? = gdCache.fetchText(key: "testFolder/abc/123")
    if gdCache.lastMethodSuccess != true {
        print("Filepath not found in cache.")
        return
    }

    let parents = CkoJsonArray()!
    json.appendArray2(name: "parents", jarr: parents)

    parents.addString(at: -1, value: folderId)

    rest.setMultipartBodyString(bodyText: json.emit())

    // The 2nd part is the file content, which will contain the binary image data.
    rest.partSelector = "2"
    rest.addHeader(name: "Content-Type", value: "image/jpeg")

    let fac = CkoFileAccess()!
    var jpgBytes: NSData
    // Read a JPG file from the local filesystem.
    jpgBytes = fac.readEntireFile(path: "qa_data/jpg/hedgehogs.jpg")

    // Add the bytes to our upload
    rest.setMultipartBodyBinary(bodyData: jpgBytes)

    var jsonResponse: String? = rest.fullRequestMultipart(httpVerb: "POST", uriPath: "/upload/drive/v3/files?uploadType=multipart")
    if rest.lastMethodSuccess == false {
        print("\(rest.lastErrorText!)")
        return
    }

    // A successful response will have a status code equal to 200.
    if rest.responseStatusCode.intValue != 200 {
        print("response status code = \(rest.responseStatusCode.intValue)")
        print("response status text = \(rest.responseStatusText!)")
        print("response header: \(rest.responseHeader!)")
        print("response JSON: \(jsonResponse!)")
        return
    }

    // Show the JSON response.
    json.load(json: jsonResponse)

    // Show the full JSON response.
    json.emitCompact = false
    print("\(json.emit()!)")

    // A successful response looks like this:
    // {
    //   "kind": "drive#file",
    //   "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
    //   "name": "hedgehogs.jpg",
    //   "mimeType": "image/jpeg"
    // }

    // Get the fileId:
    print("fileId: \(json.string(of: "id")!)")

}