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// Copyright (c) 2005-2023 Jay Berkenbilt
//
// This file is part of qpdf.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Versions of qpdf prior to version 7 were released under the terms
// of version 2.0 of the Artistic License. At your option, you may
// continue to consider qpdf to be licensed under those terms. Please
// see the manual for additional information.
// This class implements a simple writer for saving QPDF objects to
// new PDF files. See comments through the header file for additional
// details.
#ifndef PDFVERSION_HH
#define PDFVERSION_HH
#include <qpdf/DLL.h>
#include <string>
class PDFVersion
{
public:
// Represent a PDF version. PDF versions are typically
// major.minor, but PDF 1.7 has several extension levels as the
// ISO 32000 spec was in progress. This class helps with
// comparison of versions.
QPDF_DLL
PDFVersion();
QPDF_DLL
PDFVersion(PDFVersion const&) = default;
QPDF_DLL
PDFVersion& operator=(PDFVersion const&) = default;
QPDF_DLL
PDFVersion(int major, int minor, int extension = 0);
QPDF_DLL
bool operator<(PDFVersion const& rhs) const;
QPDF_DLL
bool operator==(PDFVersion const& rhs) const;
// Replace this version with the other one if the other one is
// greater.
QPDF_DLL
void updateIfGreater(PDFVersion const& other);
// Initialize a string and integer suitable for passing to
// QPDFWriter::setMinimumPDFVersion or QPDFWriter::forcePDFVersion.
QPDF_DLL
void getVersion(std::string& version, int& extension_level) const;
QPDF_DLL
int getMajor() const;
QPDF_DLL
int getMinor() const;
QPDF_DLL
int getExtensionLevel() const;
private:
int major_version;
int minor_version;
int extension_level;
};
#endif // PDFVERSION_HH
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