(Unicode C) Upload Binary File from Memory

This example demonstrates how to upload a binary file from memory. It uploads the file to a subdirectory of our choosing.

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <C_CkAuthGoogleW.h>
#include <C_CkRestW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkCacheW.h>
#include <C_CkJsonArrayW.h>
#include <C_CkFileAccessW.h>
#include <C_CkByteData.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkAuthGoogleW gAuth;
    HCkRestW rest;
    BOOL bAutoReconnect;
    HCkJsonObjectW json;
    HCkCacheW gdCache;
    const wchar_t *folderId;
    HCkJsonArrayW parents;
    HCkFileAccessW fac;
    HCkByteData jpgBytes;
    const wchar_t *jsonResponse;

    success = TRUE;

    // This example 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.

    gAuth = CkAuthGoogleW_Create();
    CkAuthGoogleW_putAccessToken(gAuth,L"GOOGLE-DRIVE-ACCESS-TOKEN");

    rest = CkRestW_Create();

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

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

    // -------------------------------------------------------------------------
    // A multipart upload to Google Drive needs a multipart/related Content-Type
    CkRestW_AddHeader(rest,L"Content-Type",L"multipart/related");

    // Specify each part of the request.

    // The 1st part is JSON with information about the file.
    CkRestW_putPartSelector(rest,L"1");
    CkRestW_AddHeader(rest,L"Content-Type",L"application/json; charset=UTF-8");

    // Construct the JSON that will contain the metadata about the file data to be uploaded...
    json = CkJsonObjectW_Create();
    CkJsonObjectW_AppendString(json,L"name",L"hedgehogs.jpg");
    CkJsonObjectW_AppendString(json,L"description",L"A cute photo of two hedgehogs.");
    CkJsonObjectW_AppendString(json,L"mimeType",L"image/jpeg");

    // To place the file in a folder, we must add a parents[] array to the JSON
    // and add the folder ID.  
    // In a previous example (see Build Local Metadata Cache
    // we built a local cache to make it easy to lookup file IDs given a file path.
    // Let's find the file ID for the folder "testFolder/abc/123"
    gdCache = CkCacheW_Create();
    CkCacheW_putLevel(gdCache,0);
    CkCacheW_AddRoot(gdCache,L"C:/ckCache/googleDrive");

    folderId = CkCacheW_fetchText(gdCache,L"testFolder/abc/123");
    if (CkCacheW_getLastMethodSuccess(gdCache) != TRUE) {
        wprintf(L"Filepath not found in cache.\n");
        CkAuthGoogleW_Dispose(gAuth);
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        CkCacheW_Dispose(gdCache);
        return;
    }

    parents = CkJsonObjectW_AppendArray(json,L"parents");
    CkJsonArrayW_AddStringAt(parents,-1,folderId);
    CkJsonArrayW_Dispose(parents);

    CkRestW_SetMultipartBodyString(rest,CkJsonObjectW_emit(json));

    // The 2nd part is the file content, which will contain the binary image data.
    CkRestW_putPartSelector(rest,L"2");
    CkRestW_AddHeader(rest,L"Content-Type",L"image/jpeg");

    fac = CkFileAccessW_Create();
    jpgBytes = CkByteData_Create();
    // Read a JPG file from the local filesystem.
    success = CkFileAccessW_ReadEntireFile(fac,L"qa_data/jpg/hedgehogs.jpg",jpgBytes);

    // Add the bytes to our upload
    CkRestW_SetMultipartBodyBinary(rest,jpgBytes);

    jsonResponse = CkRestW_fullRequestMultipart(rest,L"POST",L"/upload/drive/v3/files?uploadType=multipart");
    if (CkRestW_getLastMethodSuccess(rest) != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkAuthGoogleW_Dispose(gAuth);
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        CkCacheW_Dispose(gdCache);
        CkFileAccessW_Dispose(fac);
        CkByteData_Dispose(jpgBytes);
        return;
    }

    // A successful response will have a status code equal to 200.
    if (CkRestW_getResponseStatusCode(rest) != 200) {
        wprintf(L"response status code = %d\n",CkRestW_getResponseStatusCode(rest));
        wprintf(L"response status text = %s\n",CkRestW_responseStatusText(rest));
        wprintf(L"response header: %s\n",CkRestW_responseHeader(rest));
        wprintf(L"response JSON: %s\n",jsonResponse);
        CkAuthGoogleW_Dispose(gAuth);
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        CkCacheW_Dispose(gdCache);
        CkFileAccessW_Dispose(fac);
        CkByteData_Dispose(jpgBytes);
        return;
    }

    // Show the JSON response.
    CkJsonObjectW_Load(json,jsonResponse);

    // Show the full JSON response.
    CkJsonObjectW_putEmitCompact(json,FALSE);
    wprintf(L"%s\n",CkJsonObjectW_emit(json));

    // A successful response looks like this:
    // {
    //   "kind": "drive#file",
    //   "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
    //   "name": "hedgehogs.jpg",
    //   "mimeType": "image/jpeg"
    // }

    // Get the fileId:
    wprintf(L"fileId: %s\n",CkJsonObjectW_stringOf(json,L"id"));


    CkAuthGoogleW_Dispose(gAuth);
    CkRestW_Dispose(rest);
    CkJsonObjectW_Dispose(json);
    CkCacheW_Dispose(gdCache);
    CkFileAccessW_Dispose(fac);
    CkByteData_Dispose(jpgBytes);

    }