public async Task Scan(bool imageScan = false, string range = null, bool simulate = false)
{
QuestionsParameters parameters = GetParameters();
if (parameters == null)
{
Trace.WriteLine($"parameters are not defined");
return;
}
if (parameters.PageRange == null)
{
Trace.WriteLine($"page range is not defined");
return;
}
if (parameters.PageColumn == 1 && !imageScan)
{
await ScanPdf(parameters, range, simulate);
}
else
{
if (!parameters.ImagesExtracted)
{
ExtractImagesFromPdf(parameters);
}
await ScanImages(parameters, range, simulate);
}
}
public void SetParameters(QuestionsParameters parameters)
{
string file = GetParametersFile();
Trace.WriteLine($"save parameters to \"{file}\"");
parameters.zSave(file, jsonIndent: true);
}
public void ExtractImagesFromPdf()
{
QuestionsParameters parameters = GetParameters();
if (parameters == null)
{
Trace.WriteLine($"parameters are not defined");
return;
}
if (parameters.PageRange == null)
{
Trace.WriteLine($"page range is not defined");
return;
}
ExtractImagesFromPdf(parameters);
}
private IEnumerable <ImageColumn> GetScanImages(QuestionsParameters parameters, string imageFile)
{
if (parameters.PageColumn == 1)
{
yield return new ImageColumn {
ImageFile = imageFile, Column = 0
}
}
;
else if (parameters.PageColumn == 2)
{
string imageColumnFile1 = GetIndexedImageFile(imageFile, 1);
string imageColumnFile2 = GetIndexedImageFile(imageFile, 2);
if (!zFile.Exists(imageColumnFile1) || !zFile.Exists(imageColumnFile2))
{
CreateImagesColumn(imageFile, parameters.PageRotate, imageColumnFile1, imageColumnFile2);
}
if (_joinImagesColumn)
{
string joinedImageFile = GetIndexedImageFile(imageFile, 3);
if (!zFile.Exists(joinedImageFile))
{
CreateJoinedImageColumn(imageColumnFile1, imageColumnFile2, joinedImageFile);
}
yield return(new ImageColumn {
ImageFile = joinedImageFile, Column = 0
});
}
else
{
yield return(new ImageColumn {
ImageFile = imageColumnFile1, Column = 1
});
yield return(new ImageColumn {
ImageFile = imageColumnFile2, Column = 2
});
}
}
else
{
throw new PBException($"wrong page column {parameters.PageColumn}");
}
}
private async Task ScanPdf(QuestionsParameters parameters, string range, bool simulate = false)
{
string pdfFile = GetPdfFile();
if (!zFile.Exists(pdfFile))
{
Trace.WriteLine($"pdf file not found \"{pdfFile}\"");
return;
}
if (range == null)
{
range = parameters.PageRange;
}
Trace.WriteLine($"scan pdf \"{pdfFile}\" range \"{range}\"");
//OcrWebService ocrWebService = CreateOcrWebService();
ScanManager scanManager = CreateScanManager();
//OcrRequest request = CreateOcrRequest();
//request.DocumentFile = pdfFile;
//request.PageRange = range;
if (!simulate)
{
await scanManager.ScanPdf(pdfFile, range, zPath.Combine(GetScanDirectory(), "scan"));
//OcrResult<OcrProcessDocumentResponse> response = await ocrWebService.ProcessDocument(request);
//if (response.Success)
//{
// Trace.WriteLine($"scan ok {response.Data.ProcessedPages} pages - remainder {response.Data.AvailablePages} pages");
// string directory = GetScanDirectory();
// zdir.CreateDirectory(directory);
// string scanFile = zPath.Combine(directory, "scan");
// Trace.WriteLine($"save scan to \"{scanFile}\"");
// await ocrWebService.DownloadResultDocuments(response.Data, scanFile);
//}
//else
// Trace.WriteLine($"scan error code {response.StatusCode}");
}
else
{
Trace.WriteLine($"simulate scan pdf \"{pdfFile}\" range \"{range}\"");
}
}
private void ExtractImagesFromPdf(QuestionsParameters parameters)
{
string pdfFile = GetPdfFile();
//if (range == null)
// range = parameters.PageRange;
Trace.WriteLine($"extract images from pdf \"{pdfFile}\" range \"{parameters.PageRange}\"");
string directory = GetImagesDirectory();
zdir.CreateDirectory(directory);
//zfile.DeleteFiles(directory, "*.jpeg");
DeleteImageFiles(directory);
//iText.ExtractImages(pdfFile,
// (image, page, imageIndex) => image.Save(zPath.Combine(directory, $"page-{page:000}{(imageIndex != 1 ? $"-{imageIndex:00}" : "")}.jpeg"), ImageFormat.Jpeg),
// range: range);
foreach (PdfImage image in iText7.EnumImages(pdfFile, parameters.PageRange))
{
iText7.SaveImage(image.Image, zPath.Combine(directory, $"page-{image.PageNumber:000}{(image.ImageNumber != 1 ? $"-{image.ImageNumber:00}" : "")}"));
}
parameters.ImagesExtracted = true;
SetParameters(parameters);
}
private async Task ScanImages(QuestionsParameters parameters, string range, bool simulate = false)
{
string directory = GetImagesDirectory();
if (!zDirectory.Exists(directory))
{
Trace.WriteLine($"images directory not found \"{directory}\"");
return;
}
if (range == null)
{
range = parameters.PageRange;
}
Trace.WriteLine($"scan images \"{directory}\" range \"{range}\"");
//OcrWebService ocrWebService = CreateOcrWebService();
ScanManager scanManager = CreateScanManager();
//OcrRequest request = CreateOcrRequest();
foreach (int page in zstr.EnumRange(range))
{
string imageBaseFile = zPath.Combine(directory, $"page-{page:000}");
string imageFile = FindImageFile(imageBaseFile);
if (!zFile.Exists(imageFile))
{
Trace.WriteLine($"image not found \"{imageBaseFile}\"");
return;
}
//request.DocumentFile = imageFile;
//request.Zone = GetScanZone(parameters, imageFile);
//if (!simulate)
//{
// Trace.WriteLine($"scan image \"{imageFile}\"");
// await scanManager.ScanImage(imageFile, zPath.Combine(GetScanDirectory(), $"scan-page-{page:000}"));
// //OcrResult<OcrProcessDocumentResponse> response = await ocrWebService.ProcessDocument(request);
// //if (response.Success)
// //{
// // string scanDirectory = GetScanDirectory();
// // zdir.CreateDirectory(scanDirectory);
// // string scanFile = zPath.Combine(scanDirectory, $"scan-page-{page:000}");
// // Trace.WriteLine($"save scan to \"{scanFile}\"");
// // await ocrWebService.DownloadResultDocuments(response.Data, scanFile);
// //}
//}
//else
//{
// //Trace.WriteLine("OcrRequest :");
// //request.zTraceJson();
// Trace.WriteLine($"simulate scan image \"{imageFile}\"");
//}
foreach (ImageColumn imageColumn in GetScanImages(parameters, imageFile))
{
string scanFile = zPath.Combine(GetScanDirectory(), $"scan-page-{page:000}");
if (imageColumn.Column != 0)
{
scanFile += $"-{imageColumn.Column:00}";
}
if (!simulate)
{
Trace.WriteLine($"scan image \"{imageColumn.ImageFile}\" to \"{scanFile}\"");
await scanManager.ScanImage(imageColumn.ImageFile, scanFile);
}
else
{
Trace.WriteLine($"simulate scan image \"{imageColumn.ImageFile}\" to \"{scanFile}\"");
}
}
}
}
