Xbase++

Upload Application Specific Data

See more Google Drive Examples

Uploads a text file (application specific data) where the contents of the file are contained in a string variable. Xbase++

LOCAL nSuccess
LOCAL oJsonToken
LOCAL oGAuth
LOCAL oRest
LOCAL nBAutoReconnect
LOCAL oJson
LOCAL cFileContents
LOCAL cJsonResponse

nSuccess := 0

nSuccess := 1

//  It 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 application specific data scope.
oJsonToken := CreateObject("Chilkat.JsonObject")
nSuccess := oJsonToken:LoadFile("qa_data/tokens/googleDriveAppData.json")

oGAuth := CreateObject("Chilkat.AuthGoogle")
oGAuth:AccessToken := oJsonToken:StringOf("access_token")

oRest := CreateObject("Chilkat.Rest")

//  Connect using TLS.
nBAutoReconnect := 1
nSuccess := oRest:Connect("www.googleapis.com", 443, 1, nBAutoReconnect)

//  Provide the authentication credentials (i.e. the access token)
oRest:SetAuthGoogle(oGAuth)

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

//  Specify each part of the request.

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

oJson := CreateObject("Chilkat.JsonObject")
oJson:EmitCompact := 0

oJson:UpdateString("name", "helloWorld.txt")
oJson:UpdateString("description", "A simple text file that says Hello World.")
oJson:UpdateString("mimeType", "text/plain")
//  Specifiy the application-specific data folder.
oJson:UpdateString("parents[0]", "appDataFolder")
oRest:SetMultipartBodyString(oJson:Emit())

? oJson:Emit()

//  The JSON looks like this:
//  {
//    "name": "helloWorld.txt",
//    "description": "A simple text file that says Hello World.",
//    "mimeType": "text/plain",
//    "parents": [
//      "appDataFolder"
//    ]
//  }

//  The 2nd part is the file content.
//  In this case, we'll upload a simple text file containing "Hello World!"
oRest:PartSelector := "2"
oRest:AddHeader("Content-Type", "text/plain")

cFileContents := "Hello World!"
oRest:SetMultipartBodyString(cFileContents)

cJsonResponse := oRest:FullRequestMultipart("POST", "/upload/drive/v3/files?uploadType=multipart")
IF (oRest:LastMethodSuccess != 1)
    ? oRest:LastErrorText
    oJsonToken:destroy()
    oGAuth:destroy()
    oRest:destroy()
    oJson:destroy()
    RETURN
ENDIF

//  A successful response will have a status code equal to 200.
IF (oRest:ResponseStatusCode != 200)
    ? "response status code = " + Str(oRest:ResponseStatusCode)
    ? "response status text = " + oRest:ResponseStatusText
    ? "response header: " + oRest:ResponseHeader
    ? "response JSON: " + cJsonResponse
    oJsonToken:destroy()
    oGAuth:destroy()
    oRest:destroy()
    oJson:destroy()
    RETURN
ENDIF

//  Show the JSON response.
oJson:Load(cJsonResponse)

//  Show the full JSON response.
oJson:EmitCompact := 0
? oJson:Emit()

//  A successful response looks like this:
//  {
//    "kind": "drive#file",
//    "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
//    "name": "Untitled",
//    "mimeType": "text/plain"
//  }

//  Get the fileId:
? "fileId: " + oJson:StringOf("id")

oJsonToken:destroy()
oGAuth:destroy()
oRest:destroy()
oJson:destroy()