public async Task <HttpResponseMessage> ExtractCheck([FromUri] LeadWebRequest request)
{
try
{
AuthenticateRequest();
if (!VerifyCommonParameters(request))
{
throw new MalformedRequestException();
}
using (var stream = await GetImageStream(request.fileUrl))
{
int lastPage = request.LastPage;
ValidateFile(stream, ref lastPage);
LoadDocumentOptions options = new LoadDocumentOptions()
{
FirstPageNumber = request.FirstPage,
LastPageNumber = lastPage
};
RecognitionEngine recognitionEngine = new RecognitionEngine();
recognitionEngine.OcrEngine = ocrEngine;
var micrResults = recognitionEngine.ExtractMicr(stream, options, Leadtools.Forms.Commands.BankCheckMicrFontType.Unknown);
return(new HttpResponseMessage(HttpStatusCode.OK)
{
Content = new StringContent(JsonConvert.SerializeObject(micrResults))
});
}
}
catch (Exception e)
{
return(GenerateExceptionMessage(e));
}
}
/// <summary>
/// Method to verify the common parameters that are sent with every request to the service. This method also double checks to make sure that the LEADTOOLS license is set appropriately.
/// </summary>
internal bool VerifyCommonParameters(LeadWebRequest request)
{
try
{
if (request == null)
{
throw new Exception();
}
//Passing a last page value of -1 indicates that we want to process every page in the file.
if ((request.FirstPage > request.LastPage && request.LastPage != -1) || request.FirstPage < 1)
{
throw new Exception();
}
if (!DemoConfiguration.UnlockSupport())
{
throw new RasterException("Your license file is missing, invalid or expired. LEADTOOLS will not function. Please contact LEAD Sales for information on obtaining a valid license");
}
return(true);
}
catch (RasterException)
{
throw;
}
catch
{
return(false);
}
}
private async Task <HttpResponseMessage> ParseText([FromUri] LeadWebRequest request, bool additionalInfo)
{
try
{
AuthenticateRequest();
if (!VerifyCommonParameters(request))
{
throw new MalformedRequestException();
}
using (var stream = await GetImageStream(request.fileUrl))
{
int lastPage = request.LastPage;
ValidateFile(stream, ref lastPage);
LoadDocumentOptions options = new LoadDocumentOptions()
{
FirstPageNumber = request.FirstPage,
LastPageNumber = lastPage
};
RecognitionEngine recognitionEngine = new RecognitionEngine();
recognitionEngine.OcrEngine = ocrEngine;
recognitionEngine.WorkingDirectory = Path.GetTempPath();
var documentPageText = recognitionEngine.ExtractText(stream, options);
List <ExtractTextData> PageDataList = new List <ExtractTextData>();
int currentPage = options.FirstPageNumber;
if (!additionalInfo)
{
foreach (var page in documentPageText)
{
for (int i = 0; i < page.Words.Count; i++)
{
var word = page.Words[i];
word.Bounds = word.Bounds.ToLeadRect().ToLeadRectD();
page.Words[i] = word;
}
ExtractTextData pageData = new ExtractTextData
{
PageNumber = currentPage,
PageText = page.Text,
Words = page.Words.Select(w => new { w.Value, w.Bounds }).ToList()
};
PageDataList.Add(pageData);
currentPage++;
}
}
else
{
foreach (var page in documentPageText)
{
for (int i = 0; i < page.Words.Count; i++)
{
var word = page.Words[i];
word.Bounds = word.Bounds.ToLeadRect().ToLeadRectD();
page.Words[i] = word;
}
for (int i = 0; i < page.Characters.Count; i++)
{
var character = page.Characters[i];
character.Bounds = character.Bounds.ToLeadRect().ToLeadRectD();
page.Characters[i] = character;
}
ExtractTextData pageData = new ExtractTextData
{
PageNumber = currentPage,
PageText = page.Text,
Words = page.Words,
Characters = page.Characters
};
PageDataList.Add(pageData);
currentPage++;
}
}
using (var ms = new MemoryStream())
{
using (TextWriter tw = new StreamWriter(ms))
{
tw.Write(JsonConvert.SerializeObject(PageDataList));
tw.Flush();
ms.Position = 0;
Guid id = Guid.NewGuid();
string baseName = $"ExtractText-{id}.json";
string urlPath = $"{Url.Request.RequestUri.GetComponents(UriComponents.SchemeAndServer, UriFormat.Unescaped)}/{new DirectoryInfo(DemoConfiguration.OutputFileDirectory).Name}/{baseName}";
string serverFilePath = $"{DemoConfiguration.OutputFileDirectory}{baseName}";
SaveToDisk(ms, serverFilePath);
return(new HttpResponseMessage(HttpStatusCode.OK)
{
Content = new StringContent(urlPath)
});
}
}
}
}
catch (Exception e)
{
return(GenerateExceptionMessage(e));
}
}
