Lua

List all Pages of Files in Google Drive

See more Google Drive Examples

Demonstrates how iterate over pages to list files in Google Drive.

See Google Drive Files list for more optional HTTP parameters.

Lua

local chilkat = require("chilkat")

local success = true

-- 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.

local gAuth = chilkat.AuthGoogle.new()
gAuth.access_token = "GOOGLE-DRIVE-ACCESS-TOKEN"

local rest = chilkat.Rest.new()

-- Connect using TLS.
local bAutoReconnect = true
success = rest:connect("www.googleapis.com", 443, true, bAutoReconnect)

-- Provide the authentication credentials (i.e. the access token)
rest:set_auth_google(gAuth)

-- Get 5 results per page for testing.  (The default page size is 100, with a max of 1000.
rest:add_query_param("pageSize", "5")

local json = chilkat.JsonObject.new()
local i = 0
local numFiles = 0

-- Send the request for the 1st page.
local jsonResponse = rest:full_request_no_body("GET", "/drive/v3/files")

local pageNumber = 1
local pageToken = ""
local bContinueLoop = rest.last_method_success and (rest.response_status_code == 200)

while bContinueLoop do
    print("---- Page " .. pageNumber .. " ----")

    -- Iterate over each file in the response and show the name, id, and mimeType.
    json:load(jsonResponse)

    -- See the sample JSON response at the bottom of this example.
    numFiles = json:size_of_array("files")
    i = 0
    while i < numFiles do
        json.i = i
        print("name: " .. json:string_of("files[i].name"))
        print("id: " .. json:string_of("files[i].id"))
        print("mimeType: " .. json:string_of("files[i].mimeType"))
        print("-")
        i = i + 1
    end

    -- 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:string_of("nextPageToken")
    bContinueLoop = false
    local bHasMorePages = json.last_method_success
    if bHasMorePages then
        rest:clear_all_query_params()
        rest:add_query_param("pageSize", "5")
        rest:add_query_param("pageToken", pageToken)
        jsonResponse = rest:full_request_no_body("GET", "/drive/v3/files")
        bContinueLoop = rest.last_method_success and (rest.response_status_code == 200)
        pageNumber = pageNumber + 1
    end
end

if not rest.last_method_success then
    print(rest.last_error_text)
    return
end

-- A successful response will have a status code equal to 200.
if rest.response_status_code ~= 200 then
    print("response status code = " .. rest.response_status_code)
    print("response status text = " .. rest.response_status_text)
    print("response header: " .. rest.response_header)
    print("response JSON: " .. jsonResponse)
    return
end

-- A successful JSON 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"
--    }
--  ]
-- }