PDF4QT/PdfForQtLib/sources/pdfobjectutils.h

49 lines
1.7 KiB
C++

// Copyright (C) 2020 Jakub Melka
//
// This file is part of PdfForQt.
//
// PdfForQt is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// PdfForQt is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
#ifndef PDFOBJECTUTILS_H
#define PDFOBJECTUTILS_H
#include "pdfobject.h"
#include <set>
namespace pdf
{
class PDFObjectStorage;
/// Utilities for manipulation with objects
class PDFObjectUtils
{
public:
/// Returns list of references referenced by \p objects. So, all references, which are present
/// in objects, appear in the result set, including objects, which are referenced by referenced
/// objects (so, transitive closure above reference graph is returned).
/// \param objects Objects
/// \param storage Storage
static std::set<PDFObjectReference> getReferences(const std::vector<PDFObject>& objects, const PDFObjectStorage& storage);
static PDFObject replaceReferences(const PDFObject& object, const std::map<PDFObjectReference, PDFObjectReference>& referenceMapping);
private:
PDFObjectUtils() = delete;
};
} // namespace pdf
#endif // PDFOBJECTUTILS_H