(Visual Basic 6.0) Search for Files in Google Drive

This example follows the same methodology for listing all files in Google Drive in pages, but applies a search filter. It shows how to apply a query parameter for filtering the file results. See the Google Drive Files list for more optional HTTP parameters.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim success As Long
success = 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.

Dim gAuth As New ChilkatAuthGoogle
gAuth.AccessToken = "GOOGLE-DRIVE-ACCESS-TOKEN"

Dim rest As New ChilkatRest

' Connect using TLS.
Dim bAutoReconnect As Long
bAutoReconnect = 1
success = rest.Connect("www.googleapis.com",443,1,bAutoReconnect)

' Provide the authentication credentials (i.e. the access token)
success = rest.SetAuthGoogle(gAuth)

' Get 5 results per page for testing.  (The default page size is 100, with a max of 1000.
success = rest.AddQueryParam("pageSize","5")

' Our search filter is to list all files containing ".jpg" (i.e. all JPG image files)
success = rest.AddQueryParam("q","name contains '.jpg'")

Dim json As New ChilkatJsonObject
Dim i As Long
Dim numFiles As Long

' Send the request for the 1st page.
Dim jsonResponse As String
jsonResponse = rest.FullRequestNoBody("GET","/drive/v3/files")

Dim pageNumber As Long
pageNumber = 1
Dim pageToken As String
Dim bContinueLoop As Long
bContinueLoop = rest.LastMethodSuccess And (rest.ResponseStatusCode = 200)

Do While bContinueLoop = 1

    Debug.Print "---- Page " & pageNumber & " ----"

    ' Iterate over each file in the response and show the name, id, and mimeType.
    success = json.Load(jsonResponse)

    numFiles = json.SizeOfArray("files")
    i = 0
    Do While i < numFiles
        json.I = i
        Debug.Print "name: " & json.StringOf("files[i].name")
        Debug.Print "id: " & json.StringOf("files[i].id")
        Debug.Print "mimeType: " & json.StringOf("files[i].mimeType")
        Debug.Print "-"
        i = i + 1
    Loop

    ' Get the next page of files.
    ' If the "nextPageToken" is present in the JSON response, then use it in the "pageToken" parameter
    ' for the next request.   If no "nextPageToken" was present, then this was the last page of files.
    pageToken = json.StringOf("nextPageToken")
    bContinueLoop = 0
    Dim bHasMorePages As Long
    bHasMorePages = json.LastMethodSuccess
    If (bHasMorePages = 1) Then
        success = rest.ClearAllQueryParams()
        success = rest.AddQueryParam("pageSize","5")
        success = rest.AddQueryParam("pageToken",pageToken)
        success = rest.AddQueryParam("q","name contains '.jpg'")

        jsonResponse = rest.FullRequestNoBody("GET","/drive/v3/files")
        bContinueLoop = rest.LastMethodSuccess And (rest.ResponseStatusCode = 200)
        pageNumber = pageNumber + 1
    End If

Loop

If (rest.LastMethodSuccess <> 1) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

' A successful response will have a status code equal to 200.
If (rest.ResponseStatusCode <> 200) Then
    Debug.Print "response status code = " & rest.ResponseStatusCode
    Debug.Print "response status text = " & rest.ResponseStatusText
    Debug.Print "response header: " & rest.ResponseHeader
    Debug.Print "response JSON: " & jsonResponse
    Exit Sub
End If