/// <summary>
/// Translates a single message from a source language to a target language.
/// </summary>
/// <param name="textToTranslate">The text to translate.</param>
/// <param name="from">The language code of the translation text. For example, "en" for English.</param>
/// <param name="to">The language code to translate the text into.</param>
/// <returns>The translated document.</returns>
public async Task <TranslatedDocument> TranslateAsync(string textToTranslate, string from, string to)
{
var currentTranslatedDocument = new TranslatedDocument(textToTranslate);
PreprocessMessage(currentTranslatedDocument.SourceMessage, out var processedText, out var literanlNoTranslateList);
currentTranslatedDocument.SourceMessage = processedText;
currentTranslatedDocument.LiteranlNoTranslatePhrases = literanlNoTranslateList;
var url = "http://api.microsofttranslator.com/v2/Http.svc/Translate";
var query = $"?text={System.Net.WebUtility.UrlEncode(textToTranslate)}" +
$"&from={from}" +
$"&to={to}";
using (var request = new HttpRequestMessage())
{
var accessToken = await _authToken.GetAccessTokenAsync().ConfigureAwait(false);
request.Headers.Add("Authorization", accessToken);
request.RequestUri = new Uri(url + query);
using (var response = await _httpClient.SendAsync(request))
{
var result = await response.Content.ReadAsStringAsync();
if (!response.IsSuccessStatusCode)
{
throw new ArgumentException(result);
}
var translatedText = XElement.Parse(result).Value.Trim();
currentTranslatedDocument.TargetMessage = translatedText;
return(currentTranslatedDocument);
}
}
}
/// <summary>
/// Translates an array of strings from a source language to a target language.
/// </summary>
/// <param name="translateArraySourceTexts">The strings to translate.</param>
/// <param name="from">The language code of the translation text. For example, "en" for English.</param>
/// <param name="to">The language code to translate the text into.</param>
/// <returns>An array of the translated documents.</returns>
public async Task <List <TranslatedDocument> > TranslateArrayAsync(string[] translateArraySourceTexts, string from, string to)
{
var translatedDocuments = new List <TranslatedDocument>();
var uri = "https://api.microsofttranslator.com/v2/Http.svc/TranslateArray2";
for (var srcTxtIndx = 0; srcTxtIndx < translateArraySourceTexts.Length; srcTxtIndx++)
{
// Check for literal tag in input user message
var currentTranslatedDocument = new TranslatedDocument(translateArraySourceTexts[srcTxtIndx]);
translatedDocuments.Add(currentTranslatedDocument);
PreprocessMessage(currentTranslatedDocument.SourceMessage, out var processedText, out var literanlNoTranslateList);
currentTranslatedDocument.SourceMessage = processedText;
translateArraySourceTexts[srcTxtIndx] = processedText;
currentTranslatedDocument.LiteranlNoTranslatePhrases = literanlNoTranslateList;
}
// body of http request
var body = $"<TranslateArrayRequest>" +
"<AppId />" +
$"<From>{from}</From>" +
"<Options>" +
" <Category xmlns=\"http://schemas.datacontract.org/2004/07/Microsoft.MT.Web.Service.V2\" >generalnn</Category>" +
"<ContentType xmlns=\"http://schemas.datacontract.org/2004/07/Microsoft.MT.Web.Service.V2\">text/plain</ContentType>" +
"<ReservedFlags xmlns=\"http://schemas.datacontract.org/2004/07/Microsoft.MT.Web.Service.V2\" />" +
"<State xmlns=\"http://schemas.datacontract.org/2004/07/Microsoft.MT.Web.Service.V2\" />" +
"<Uri xmlns=\"http://schemas.datacontract.org/2004/07/Microsoft.MT.Web.Service.V2\" />" +
"<User xmlns=\"http://schemas.datacontract.org/2004/07/Microsoft.MT.Web.Service.V2\" />" +
"</Options>" +
"<Texts>" +
string.Join(string.Empty, translateArraySourceTexts.Select(s => $"<string xmlns=\"http://schemas.microsoft.com/2003/10/Serialization/Arrays\">{SecurityElement.Escape(s)}</string>\n"))
+ "</Texts>" +
$"<To>{to}</To>" +
"</TranslateArrayRequest>";
var accessToken = await _authToken.GetAccessTokenAsync().ConfigureAwait(false);
using (var request = new HttpRequestMessage())
{
request.Method = HttpMethod.Post;
request.RequestUri = new Uri(uri);
request.Content = new StringContent(body, Encoding.UTF8, "text/xml");
request.Headers.Add("Authorization", accessToken);
using (var response = await _httpClient.SendAsync(request))
{
var responseBody = await response.Content.ReadAsStringAsync();
switch (response.StatusCode)
{
case HttpStatusCode.OK:
Console.WriteLine("Request status is OK. Result of translate array method is:");
var doc = XDocument.Parse(responseBody);
var ns = XNamespace.Get("http://schemas.datacontract.org/2004/07/Microsoft.MT.Web.Service.V2");
var results = new List <string>();
var sentIndex = 0;
foreach (var xe in doc.Descendants(ns + "TranslateArray2Response"))
{
var currentTranslatedDocument = translatedDocuments[sentIndex];
currentTranslatedDocument.RawAlignment = xe.Element(ns + "Alignment").Value;
if (!string.IsNullOrEmpty(currentTranslatedDocument.RawAlignment))
{
var alignments = currentTranslatedDocument.RawAlignment.Trim().Split(' ');
currentTranslatedDocument.SourceTokens = PostProcessingUtilities.SplitSentence(currentTranslatedDocument.SourceMessage, alignments);
currentTranslatedDocument.TranslatedTokens = PostProcessingUtilities.SplitSentence(xe.Element(ns + "TranslatedText").Value, alignments, false);
currentTranslatedDocument.IndexedAlignment = PostProcessingUtilities.WordAlignmentParse(alignments, currentTranslatedDocument.SourceTokens, currentTranslatedDocument.TranslatedTokens);
}
sentIndex += 1;
}
return(translatedDocuments);
default:
throw new Exception(response.ReasonPhrase);
}
}
}
}
/// <summary>
/// Translates an array of strings from a source language to a target language.
/// </summary>
/// <param name="translateArraySourceTexts">The strings to translate.</param>
/// <param name="from">The language code of the translation text. For example, "en" for English.</param>
/// <param name="to">The language code to translate the text into.</param>
/// <returns>An array of the translated documents.</returns>
public async Task <List <TranslatedDocument> > TranslateArrayAsync(string[] translateArraySourceTexts, string from, string to)
{
var translatedDocuments = new List <TranslatedDocument>();
for (var srcTxtIndx = 0; srcTxtIndx < translateArraySourceTexts.Length; srcTxtIndx++)
{
// Check for literal tag in input user message
var currentTranslatedDocument = new TranslatedDocument(translateArraySourceTexts[srcTxtIndx]);
translatedDocuments.Add(currentTranslatedDocument);
PreprocessMessage(currentTranslatedDocument.SourceMessage, out var processedText, out var literanlNoTranslateList);
currentTranslatedDocument.SourceMessage = processedText;
translateArraySourceTexts[srcTxtIndx] = processedText;
currentTranslatedDocument.LiteranlNoTranslatePhrases = literanlNoTranslateList;
}
// list of translation request for the service
var payload = translateArraySourceTexts.Select(s => new TranslatorRequestModel {
Text = s
});
using (var request = GetTranslateRequestMessage(from, to, payload))
{
using (var response = await _httpClient.SendAsync(request).ConfigureAwait(false))
{
if (response.IsSuccessStatusCode)
{
var responseBody = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
var translatedResults = JsonConvert.DeserializeObject <IEnumerable <TranslatedResult> >(responseBody);
var sentIndex = 0;
foreach (var translatedValue in translatedResults)
{
var translation = translatedValue.Translations.First();
var currentTranslatedDocument = translatedDocuments[sentIndex];
currentTranslatedDocument.RawAlignment = translation.Alignment?.Projection ?? null;
currentTranslatedDocument.TargetMessage = translation.Text;
if (!string.IsNullOrEmpty(currentTranslatedDocument.RawAlignment))
{
var alignments = currentTranslatedDocument.RawAlignment.Trim().Split(' ');
currentTranslatedDocument.SourceTokens = PostProcessingUtilities.SplitSentence(currentTranslatedDocument.SourceMessage, alignments);
currentTranslatedDocument.TranslatedTokens = PostProcessingUtilities.SplitSentence(translation.Text, alignments, false);
currentTranslatedDocument.IndexedAlignment = PostProcessingUtilities.WordAlignmentParse(alignments, currentTranslatedDocument.SourceTokens, currentTranslatedDocument.TranslatedTokens);
currentTranslatedDocument.TargetMessage = PostProcessingUtilities.Join(" ", currentTranslatedDocument.TranslatedTokens);
}
else
{
var translatedText = translation.Text;
currentTranslatedDocument.TargetMessage = translatedText;
currentTranslatedDocument.SourceTokens = new string[] { currentTranslatedDocument.SourceMessage };
currentTranslatedDocument.TranslatedTokens = new string[] { currentTranslatedDocument.TargetMessage };
currentTranslatedDocument.IndexedAlignment = new Dictionary <int, int>();
}
sentIndex++;
}
return(translatedDocuments);
}
else
{
var responseBody = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
var errorResult = JsonConvert.DeserializeObject <ErrorModel>(responseBody);
throw new ArgumentException(errorResult.Error.Message);
}
}
}
}
