(Unicode C++) Emoji Tweet

Demonstrates posting a status update that includes an emoji character.

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#include <CkJsonObjectW.h>
#include <CkRestW.h>
#include <CkOAuth1W.h>
#include <CkStringBuilderW.h>

void ChilkatSample(void)
    {
    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // ----------------------------------------------------------------------
    // This initial setup, which involves setting the OAuth1 properties and connecting
    // to api.twitter.com, is only required once at the beginning.  Once connected, the same
    // object instance may be re-used, and if necessary, it will automatically reconnect
    // as needed.

    // Assume we've previously obtained an access token and saved it to a JSON file..
    CkJsonObjectW json;
    bool success = json.LoadFile(L"qa_data/tokens/twitter.json");

    CkRestW rest;
    CkOAuth1W oauth1;

    oauth1.put_ConsumerKey(L"TWITTER_CONSUMER_KEY");
    oauth1.put_ConsumerSecret(L"TWITTER_CONSUMER_SECRET");
    oauth1.put_Token(json.stringOf(L"oauth_token"));
    oauth1.put_TokenSecret(json.stringOf(L"oauth_token_secret"));
    oauth1.put_SignatureMethod(L"HMAC-SHA1");
    oauth1.GenNonce(16);

    rest.SetAuthOAuth1(oauth1,false);

    bool bAutoReconnect = true;
    success = rest.Connect(L"api.twitter.com",443,true,bAutoReconnect);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    // This ends the initial setup...
    // ----------------------------------------------------------------------

    // For this example, I've pre-created a text file containing two emoji
    // characters (the "ghost" emoji, and a "face savouring delicious food" emoji).  
    // This text file was saved using the utf-8 encoding.

    // The utf-8 bytes for the ghost emoji are 0x9f 0x91 0xbb.  (Note: This is the utf-8
    // representation that does not use surrogate pairs.)
    // 
    // The utf-8 bytes for the "face savouring delicious food" emoji are \xF0\x9F\x98\x8B.

    CkStringBuilderW sbText;
    sbText.LoadFile(L"qa_data/txt/ghost_emoji.txt",L"utf-8");
    sbText.Prepend(L"Test tweet using two emoji chars: ");

    // Send a tweet...
    rest.ClearAllQueryParams();
    rest.AddQueryParam(L"status",sbText.getAsString());
    const wchar_t *resp = rest.fullRequestFormUrlEncoded(L"POST",L"/1.1/statuses/update.json");
    if (rest.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    CkJsonObjectW jsonResponse;
    jsonResponse.put_EmitCompact(false);
    jsonResponse.Load(resp);

    if (rest.get_ResponseStatusCode() != 200) {
        wprintf(L"%s\n",jsonResponse.emit());
        return;
    }

    // Show the successful response:
    wprintf(L"%s\n",jsonResponse.emit());
    wprintf(L"Success.\n");
    }