Xbase++

List Files in Google Drive

See more Google Drive Examples

Demonstrates how to list files in Google Drive.

See Google Drive Files list for more optional HTTP parameters.

Xbase++

LOCAL nSuccess
LOCAL oGAuth
LOCAL oRest
LOCAL nBAutoReconnect
LOCAL cJsonResponse
LOCAL oJson
LOCAL nNumFiles
LOCAL i

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 scope.

oGAuth := CreateObject("Chilkat.AuthGoogle")
oGAuth:AccessToken := "GOOGLE-DRIVE-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)

//  Get 4 results per page.  (The default page size is 100, with a max of 1000.
oRest:AddQueryParam("pageSize", "4")

//  This uses the Google Drive V3 API... (not V2)
cJsonResponse := oRest:FullRequestNoBody("GET", "/drive/v3/files")
IF (oRest:LastMethodSuccess != 1)
    ? oRest:LastErrorText
    oGAuth:destroy()
    oRest:destroy()
    RETURN
ENDIF

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

//  A successful response looks like this:
//  {
//   "kind": "drive#fileList",
//   "files": [
//     {
//       "kind": "drive#file",
//       "id": "0B53Q6OSTWYolenpjTEU4ekJlQUU",
//       "name": "test",
//       "mimeType": "application/vnd.google-apps.folder"
//     },
//     {
//       "kind": "drive#file",
//       "id": "0B53Q6OSTWYolRm4ycjZtdXhRaEE",
//       "name": "starfish4.jpg",
//       "mimeType": "image/jpeg"
//     },
//     {
//       "kind": "drive#file",
//       "id": "0B53Q6OSTWYolMWt2VzN0Qlo1UjA",
//       "name": "hamlet2.xml",
//       "mimeType": "text/xml"
//     },
//  ...
//     {
//       "kind": "drive#file",
//       "id": "0B53Q6OSTWYolc3RhcnRlcl9maWxlX2Rhc2hlclYw",
//       "name": "Getting started",
//       "mimeType": "application/pdf"
//     }
//   ]
//  }

//  Iterate over each file in the response and show the name, id, and mimeType.
oJson := CreateObject("Chilkat.JsonObject")
oJson:Load(cJsonResponse)

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

nNumFiles := oJson:SizeOfArray("files")
i := 0
DO WHILE i < nNumFiles
    oJson:I := i
    ? "name: " + oJson:StringOf("files[i].name")
    ? "id: " + oJson:StringOf("files[i].id")
    ? "mimeType: " + oJson:StringOf("files[i].mimeType")
    ? "-"
    i := i + 1
ENDDO

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