Add PptxTxtConverter

TxtFile/Projects/Linux/TxtXmlFormatLib.pro

@@ -24,6 +24,7 @@ DEFINES += UNICODE \
 include($$PWD/../../../Common/3dParty/boost/boost.pri)
 
 HEADERS += \
+	../../Source/PptxTxtConverter.h \
 	../../Source/TxtFormat/File.h \
 	../../Source/TxtFormat/TxtFile.h \
 	../../Source/TxtRenderer.h \
@@ -32,6 +33,7 @@ HEADERS += \
 	../../Source/ConvertTxt2Docx.h
 
 SOURCES += \
+	../../Source/PptxTxtConverter.cpp \
 	../../Source/TxtFormat/File.cpp \
 	../../Source/TxtFormat/TxtFile.cpp \
 	../../Source/TxtRenderer.cpp \

TxtFile/Source/PptxTxtConverter.cpp

@@ -0,0 +1,111 @@
+#include "PptxTxtConverter.h"
+
+#include "../../../OOXML/PPTXFormat/FileTypes.h"
+#include "../../../OOXML/PPTXFormat/Folder.h"
+#include "../../../OOXML/PPTXFormat/Slide.h"
+#include "../../../OOXML/PPTXFormat/Presentation.h"
+#include "../../../OOXML/PPTXFormat/Logic/Shape.h"
+#include "../../../OOXML/PPTXFormat/Logic/Csld.h"
+#include "../../../OOXML/PPTXFormat/Logic/SpTree.h"
+#include "../../../OOXML/PPTXFormat/Logic/SpTreeElem.h"
+
+#include "../../../OOXML/DocxFormat/WritingElement.h"
+
+#include "../../../Common/OfficeFileErrorDescription.h"
+#include "../../../DesktopEditor/common/File.h"
+
+class CPptxTxtConverter::CPptxTxtConverterImpl
+{
+public:
+	CPptxTxtConverterImpl() = default;
+	CPptxTxtConverterImpl(const CPptxTxtConverterImpl& other) = delete;
+	CPptxTxtConverterImpl(CPptxTxtConverterImpl&& other) = delete;
+	virtual ~CPptxTxtConverterImpl();
+
+	void AddSlide(const PPTX::Slide& oSlide);
+
+	// returns true if ok
+	void Save(const std::wstring& wsDstTxtFile);
+
+private:
+	std::wstring GetTextFromShape(const PPTX::Logic::Shape& oShape) const;
+	std::vector<std::wstring> m_arTxtData;
+
+	const size_t knStringReserve = 1000;
+};
+
+CPptxTxtConverter::CPptxTxtConverter()
+    : m_pImpl(std::unique_ptr<CPptxTxtConverterImpl>(new CPptxTxtConverterImpl()))
+{
+}
+CPptxTxtConverter::~CPptxTxtConverter()
+{
+}
+int CPptxTxtConverter::Convert(const std::wstring& wsSrcPptxDir, const std::wstring& wsDstTxtFile)
+{
+	std::wstring norm_src_pptx_dir = CorrectPathW(wsSrcPptxDir);
+	if (norm_src_pptx_dir.back() != FILE_SEPARATOR_WCHAR)
+		norm_src_pptx_dir += FILE_SEPARATOR_WCHAR;
+
+	std::unique_ptr<PPTX::Document> pptx_document(new PPTX::Document());
+	bool is_read_ok = pptx_document->read(norm_src_pptx_dir);
+	if (!is_read_ok)
+		return AVS_FILEUTILS_ERROR_CONVERT;
+
+	const auto presentation_file_type = OOX::Presentation::FileTypes::Presentation;
+	smart_ptr<PPTX::Presentation> presentation = pptx_document->Get(presentation_file_type).smart_dynamic_cast<PPTX::Presentation>();
+	if (!presentation.is_init())
+		return AVS_FILEUTILS_ERROR_CONVERT;
+
+	for (size_t i = 0; i < presentation->sldIdLst.size(); ++i)
+	{
+		std::wstring rid = presentation->sldIdLst[i].rid.get();
+		smart_ptr<PPTX::Slide> slide = ((*presentation)[rid]).smart_dynamic_cast<PPTX::Slide>();
+
+		if (slide.IsInit() == false)
+			continue;
+
+		m_pImpl->AddSlide(*slide);
+	}
+	m_pImpl->Save(wsDstTxtFile);
+	return S_OK;
+}
+void CPptxTxtConverter::CPptxTxtConverterImpl::AddSlide(const PPTX::Slide& oSlide)
+{
+	std::wstring slide_text;
+	slide_text.reserve(knStringReserve);
+
+	auto& sp_tree_elems = oSlide.cSld->spTree.SpTreeElems;
+	for (auto& elem : sp_tree_elems)
+	{
+		if (elem.getType() != OOX::et_p_Shape)
+			continue;
+
+		const auto& shape = *elem.GetElem().as<PPTX::Logic::Shape*>();
+		slide_text += GetTextFromShape(shape);
+	}
+	m_arTxtData.push_back(std::move(slide_text));
+}
+void CPptxTxtConverter::CPptxTxtConverterImpl::Save(const std::wstring& wsDstTxtFile)
+{
+	NSStringUtils::CStringBuilder str_builder;
+	str_builder.AddSize(1000);
+	for (const auto& txt_str : m_arTxtData)
+	{
+		str_builder.WriteString(txt_str);
+		str_builder.WriteString(L"\n");
+	}
+	NSFile::CFileBinary::SaveToFile(wsDstTxtFile, str_builder.GetData());
+	m_arTxtData.clear();
+}
+
+std::wstring CPptxTxtConverter::CPptxTxtConverterImpl::GetTextFromShape(const PPTX::Logic::Shape& oShape) const
+{
+	std::wstring text;
+	text.reserve(knStringReserve);
+
+	for (const auto& paragraph : oShape.txBody->Paragrs)
+		text += paragraph.GetText(true);
+
+	return text; // RVO
+}

TxtFile/Source/PptxTxtConverter.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <memory>
+#include <xstring>
+
+class CPptxTxtConverter
+{
+public:
+	CPptxTxtConverter();
+	CPptxTxtConverter(const CPptxTxtConverter& other) = delete;
+	CPptxTxtConverter(CPptxTxtConverter&& other) = delete;
+	virtual ~CPptxTxtConverter();
+
+	// returns S_OK if convertation was successful
+	int Convert(const std::wstring& wsSrcPptxDir, const std::wstring& wsDstTxtFile = L"./output.txt");
+
+private:
+	class CPptxTxtConverterImpl;
+	std::unique_ptr<CPptxTxtConverterImpl> m_pImpl;
+};
+