Lua

Search for Files in Google Drive

See more Google Drive Examples

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. 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")

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

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)

    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)
        rest:add_query_param("q", "name contains '.jpg'")

        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