(Delphi DLL) Google Translate Text

See more Google Translate Examples

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

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
jsonToken: HCkJsonObject;
success: Boolean;
http: HCkHttp;
json: HCkJsonObject;
resp: HCkHttpResponse;
jResp: HCkJsonObject;
respStatusCode: Integer;
translatedText: PWideChar;
i: Integer;
n: Integer;

begin
// 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 
jsonToken := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/_googleTranslate.json');
if (success <> True) then
  begin
    Memo1.Lines.Add('Failed to load _googleTranslate.json');
    Exit;
  end;

http := CkHttp_Create();

CkHttp_putAuthToken(http,CkJsonObject__stringOf(jsonToken,'access_token'));

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

json := CkJsonObject_Create();
// The following code creates the JSON request body.
CkJsonObject_UpdateString(json,'q','The quick brown fox jumped over the lazy dog.');
CkJsonObject_UpdateString(json,'source','en');
CkJsonObject_UpdateString(json,'target','es');
CkJsonObject_UpdateString(json,'format','text');

CkJsonObject_putEmitCompact(json,False);
Memo1.Lines.Add(CkJsonObject__emit(json));

resp := CkHttp_PostJson3(http,'https://translation.googleapis.com/language/translate/v2','application/json',json);
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

jResp := CkJsonObject_Create();
CkHttpResponse_GetBodyJson(resp,jResp);
CkJsonObject_putEmitCompact(jResp,False);

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(CkJsonObject__emit(jResp));

respStatusCode := CkHttpResponse_getStatusCode(resp);
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(CkHttpResponse__header(resp));
    Memo1.Lines.Add('Failed.');
    CkHttpResponse_Dispose(resp);
    Exit;
  end;
CkHttpResponse_Dispose(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."
//       }
//     ]
//   }
// }

i := 0;
n := CkJsonObject_SizeOfArray(jResp,'data.translations');
while i < n do
  begin
    CkJsonObject_putI(jResp,i);
    translatedText := CkJsonObject__stringOf(jResp,'data.translations[i].translatedText');
    Memo1.Lines.Add(translatedText);
    i := i + 1;
  end;

CkJsonObject_Dispose(jsonToken);
CkHttp_Dispose(http);
CkJsonObject_Dispose(json);
CkJsonObject_Dispose(jResp);

end;