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