Unicode C++

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.

Unicode C++

#include <CkAuthGoogleW.h>
#include <CkRestW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    bool success = false;

    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.

    CkAuthGoogleW gAuth;
    gAuth.put_AccessToken(L"GOOGLE-DRIVE-ACCESS-TOKEN");

    CkRestW rest;

    //  Connect using TLS.
    bool bAutoReconnect = true;
    success = rest.Connect(L"www.googleapis.com",443,true,bAutoReconnect);

    //  Provide the authentication credentials (i.e. the access token)
    rest.SetAuthGoogle(gAuth);

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

    //  This uses the Google Drive V3 API... (not V2)
    const wchar_t *jsonResponse = rest.fullRequestNoBody(L"GET",L"/drive/v3/files");
    if (rest.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    //  A successful response will have a status code equal to 200.
    if (rest.get_ResponseStatusCode() != 200) {
        wprintf(L"request header = %s\n",rest.lastRequestHeader());
        wprintf(L"response status code = %d\n",rest.get_ResponseStatusCode());
        wprintf(L"response status text = %s\n",rest.responseStatusText());
        wprintf(L"response header: %s\n",rest.responseHeader());
        wprintf(L"response JSON: %s\n",jsonResponse);
        return;
    }

    //  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.
    CkJsonObjectW json;
    json.Load(jsonResponse);

    //  Show the full JSON response.
    json.put_EmitCompact(false);
    wprintf(L"%s\n",json.emit());

    int numFiles = json.SizeOfArray(L"files");
    int i = 0;
    while (i < numFiles) {
        json.put_I(i);
        wprintf(L"name: %s\n",json.stringOf(L"files[i].name"));
        wprintf(L"id: %s\n",json.stringOf(L"files[i].id"));
        wprintf(L"mimeType: %s\n",json.stringOf(L"files[i].mimeType"));
        wprintf(L"-\n");
        i = i + 1;
    }
    }