(Unicode C++) Google Translate Text

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Demonstrates how to use the Cloud Translation API to translate text from one spoken language to another. The example translates from English to Spanish.

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#include <CkJsonObjectW.h>
#include <CkHttpW.h>
#include <CkHttpResponseW.h>

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

    // --------------------------------------------------------------------------------
    // IMPORTANT: 
    // Don't forget you need to 1st enable the Cloud Translation API in your Google Developers Console at https://console.cloud.google.com
    // --------------------------------------------------------------------------------

    // It is assumed we previously obtained an OAuth2 access token.
    // This example loads the JSON access token file 
    CkJsonObjectW jsonToken;
    bool success = jsonToken.LoadFile(L"qa_data/tokens/_googleTranslate.json");
    if (success != true) {
        wprintf(L"Failed to load _googleTranslate.json\n");
        return;
    }

    CkHttpW http;

    http.put_AuthToken(jsonToken.stringOf(L"access_token"));

    // The following JSON is sent in the request body.

    CkJsonObjectW json;
    // The following code creates the JSON request body.
    json.UpdateString(L"q",L"The quick brown fox jumped over the lazy dog.");
    json.UpdateString(L"source",L"en");
    json.UpdateString(L"target",L"es");
    json.UpdateString(L"format",L"text");

    json.put_EmitCompact(false);
    wprintf(L"%s\n",json.emit());

    CkHttpResponseW *resp = http.PostJson3(L"https://translation.googleapis.com/language/translate/v2",L"application/json",json);
    if (http.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    CkJsonObjectW jResp;
    resp->GetBodyJson(jResp);
    jResp.put_EmitCompact(false);

    wprintf(L"Response Body:\n");
    wprintf(L"%s\n",jResp.emit());

    int respStatusCode = resp->get_StatusCode();
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",resp->header());
        wprintf(L"Failed.\n");
        delete resp;
        return;
    }

    delete resp;

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "data": {
    //     "translations": [
    //       {
    //         "translatedText": "El zorro rpida salt sobre el perro perezoso."
    //       }
    //     ]
    //   }
    // }

    const wchar_t *translatedText = 0;

    int i = 0;
    int n = jResp.SizeOfArray(L"data.translations");
    while (i < n) {
        jResp.put_I(i);
        translatedText = jResp.stringOf(L"data.translations[i].translatedText");
        wprintf(L"%s\n",translatedText);
        i = i + 1;
    }
    }