استخراج فقرة من PDF

استخراج النص من مستند PDF في شكل فقرات

يمكننا الحصول على النص من مستند PDF عن طريق البحث عن نص معين (باستخدام “النص العادي” أو “التعبيرات العادية”) من صفحة واحدة أو المستند بأكمله، أو يمكننا الحصول على النص الكامل لصفحة واحدة، نطاق من الصفحات أو المستند الكامل.

```cpp
static void DrawRectangleOnPage(System::SmartPtr<Rectangle> rectangle, System::SmartPtr<Page> page);
static void DrawPolygonOnPage(System::ArrayPtr<System::SmartPtr<Point>> polygon, System::SmartPtr<Page> page);
void Parsing::ExtractParagraph()
{
    // The path to the documents directory.
    std::clog << __func__ << ": Start" << std::endl;
    // String for path name
    String _dataDir("C:\\Samples\\Parsing\\");

    auto doc = MakeObject<Document>(_dataDir + u"sample.pdf");
    auto page = doc->get_Pages()->idx_get(1);

    auto absorber = MakeObject<ParagraphAbsorber>();
    absorber->Visit(page);

    auto markup = absorber->get_PageMarkups()->idx_get(0);

    for(auto &section : markup->get_Sections())
    {
        DrawRectangleOnPage(section->get_Rectangle(), page);
        for(auto &paragraph : section->get_Paragraphs())
        {
        DrawPolygonOnPage(paragraph->get_Points(), page);
        }
    }

    doc->Save(_dataDir + u"output_out.pdf");
}

void DrawRectangleOnPage(System::SmartPtr<Rectangle> rectangle, System::SmartPtr<Page> page)
{
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::GSave>());
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::ConcatenateMatrix>(1, 0, 0, 1, 0, 0));
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::SetRGBColorStroke>(0, 1, 0));
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::SetLineWidth>(2));
    page->get_Contents()->Add(
        MakeObject<Aspose::Pdf::Operators::Re>(
        rectangle->get_LLX(),
        rectangle->get_LLY(),
        rectangle->get_Width(),
        rectangle->get_Height()));
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::ClosePathStroke>());
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::GRestore>());
}

void DrawPolygonOnPage(System::ArrayPtr<System::SmartPtr<Point>> polygon, System::SmartPtr<Page> page)
{
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::GSave>());
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::ConcatenateMatrix>(1, 0, 1, 0, 0, 0));
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::SetRGBColorStroke>(0, 0, 1));
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::SetLineWidth>(1));
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::MoveTo>(polygon->idx_get(0)->get_X(), polygon[0]->get_Y()));
    for (int i = 1; i < polygon->get_Length(); i++)
    {
        page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::LineTo>(polygon->idx_get(i)->get_X(), polygon[i]->get_Y()));
    }
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::LineTo>(polygon->idx_get(0)->get_X(), polygon[0]->get_Y()));
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::ClosePathStroke>());
    page->get_Contents()->Add(MakeObject<Aspose::Pdf::Operators::GRestore>());
}