PowerBuilder

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. PowerBuilder

integer li_rc
long li_Success
oleobject loo_GAuth
oleobject loo_Rest
long li_BAutoReconnect
oleobject loo_Json
oleobject loo_GdCache
string ls_FolderId
oleobject loo_Parents
oleobject loo_Fac
string ls_JsonResponse

li_Success = 0

li_Success = 1

//  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.

loo_GAuth = create oleobject
li_rc = loo_GAuth.ConnectToNewObject("Chilkat.AuthGoogle")
if li_rc < 0 then
    destroy loo_GAuth
    MessageBox("Error","Connecting to COM object failed")
    return
end if
loo_GAuth.AccessToken = "GOOGLE-DRIVE-ACCESS-TOKEN"

loo_Rest = create oleobject
li_rc = loo_Rest.ConnectToNewObject("Chilkat.Rest")

//  Connect using TLS.
li_BAutoReconnect = 1
li_Success = loo_Rest.Connect("www.googleapis.com",443,1,li_BAutoReconnect)

//  Provide the authentication credentials (i.e. the access token)
loo_Rest.SetAuthGoogle(loo_GAuth)

//  -------------------------------------------------------------------------
//  A multipart upload to Google Drive needs a multipart/related Content-Type
loo_Rest.AddHeader("Content-Type","multipart/related")

//  Specify each part of the request.

//  The 1st part is JSON with information about the file.
loo_Rest.PartSelector = "1"
loo_Rest.AddHeader("Content-Type","application/json; charset=UTF-8")

//  Construct the JSON that will contain the metadata about the file data to be uploaded...
loo_Json = create oleobject
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Json.AppendString("name","hedgehogs.jpg")
loo_Json.AppendString("description","A cute photo of two hedgehogs.")
loo_Json.AppendString("mimeType","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"
loo_GdCache = create oleobject
li_rc = loo_GdCache.ConnectToNewObject("Chilkat.Cache")

loo_GdCache.Level = 0
loo_GdCache.AddRoot("C:/ckCache/googleDrive")

ls_FolderId = loo_GdCache.FetchText("testFolder/abc/123")
if loo_GdCache.LastMethodSuccess <> 1 then
    Write-Debug "Filepath not found in cache."
    destroy loo_GAuth
    destroy loo_Rest
    destroy loo_Json
    destroy loo_GdCache
    return
end if

loo_Parents = create oleobject
li_rc = loo_Parents.ConnectToNewObject("Chilkat.JsonArray")

loo_Json.AppendArray2("parents",loo_Parents)

loo_Parents.AddStringAt(-1,ls_FolderId)

loo_Rest.SetMultipartBodyString(loo_Json.Emit())

//  The 2nd part is the file content, which will contain the binary image data.
loo_Rest.PartSelector = "2"
loo_Rest.AddHeader("Content-Type","image/jpeg")

loo_Fac = create oleobject
li_rc = loo_Fac.ConnectToNewObject("Chilkat.FileAccess")

//  Read a JPG file from the local filesystem.
loo_JpgBytes = loo_Fac.ReadEntireFile("qa_data/jpg/hedgehogs.jpg")

//  Add the bytes to our upload
loo_Rest.SetMultipartBodyBinary(loo_JpgBytes)

ls_JsonResponse = loo_Rest.FullRequestMultipart("POST","/upload/drive/v3/files?uploadType=multipart")
if loo_Rest.LastMethodSuccess = 0 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_GAuth
    destroy loo_Rest
    destroy loo_Json
    destroy loo_GdCache
    destroy loo_Parents
    destroy loo_Fac
    return
end if

//  A successful response will have a status code equal to 200.
if loo_Rest.ResponseStatusCode <> 200 then
    Write-Debug "response status code = " + string(loo_Rest.ResponseStatusCode)
    Write-Debug "response status text = " + loo_Rest.ResponseStatusText
    Write-Debug "response header: " + loo_Rest.ResponseHeader
    Write-Debug "response JSON: " + ls_JsonResponse
    destroy loo_GAuth
    destroy loo_Rest
    destroy loo_Json
    destroy loo_GdCache
    destroy loo_Parents
    destroy loo_Fac
    return
end if

//  Show the JSON response.
loo_Json.Load(ls_JsonResponse)

//  Show the full JSON response.
loo_Json.EmitCompact = 0
Write-Debug loo_Json.Emit()

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

//  Get the fileId:
Write-Debug "fileId: " + loo_Json.StringOf("id")


destroy loo_GAuth
destroy loo_Rest
destroy loo_Json
destroy loo_GdCache
destroy loo_Parents
destroy loo_Fac