(Lianja) List Files in Google Drive

Demonstrates how to list files in Google Drive.

See Google Drive Files list for more optional HTTP parameters.

Chilkat Lianja Extension Download Chilkat Lianja Extension

llSuccess = .T.

// 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.

loGAuth = createobject("CkAuthGoogle")
loGAuth.AccessToken = "GOOGLE-DRIVE-ACCESS-TOKEN"

loRest = createobject("CkRest")

// Connect using TLS.
llBAutoReconnect = .T.
llSuccess = loRest.Connect("www.googleapis.com",443,.T.,llBAutoReconnect)

// Provide the authentication credentials (i.e. the access token)
loRest.SetAuthGoogle(loGAuth)

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

// This uses the Google Drive V3 API... (not V2)
lcJsonResponse = loRest.FullRequestNoBody("GET","/drive/v3/files")
if (loRest.LastMethodSuccess <> .T.) then
    ? loRest.LastErrorText
    release loGAuth
    release loRest
    return
endif

// A successful response will have a status code equal to 200.
if (loRest.ResponseStatusCode <> 200) then
    ? "request header = " + loRest.LastRequestHeader
    ? "response status code = " + str(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response JSON: " + lcJsonResponse
    release loGAuth
    release loRest
    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.
loJson = createobject("CkJsonObject")
loJson.Load(lcJsonResponse)

// Show the full JSON response.
loJson.EmitCompact = .F.
? loJson.Emit()

lnNumFiles = loJson.SizeOfArray("files")
i = 0
do while i < lnNumFiles
    loJson.I = i
    ? "name: " + loJson.StringOf("files[i].name")
    ? "id: " + loJson.StringOf("files[i].id")
    ? "mimeType: " + loJson.StringOf("files[i].mimeType")
    ? "-"
    i = i + 1
enddo


release loGAuth
release loRest
release loJson