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130 lines
4.6 KiB
C++
130 lines
4.6 KiB
C++
// ***************************************************************** -*- C++ -*-
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/*
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* Copyright (C) 2004-2021 Exiv2 authors
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* This program is part of the Exiv2 distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef VERSION_HPP_
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#define VERSION_HPP_
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#include "exiv2lib_export.h"
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#include "exv_conf.h"
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// *****************************************************************************
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// included header files
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// + standard includes
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#include <vector>
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#include <regex>
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/*!
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@brief Make an integer version number for comparison from a major, minor and
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a patch version number.
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*/
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#define EXIV2_MAKE_VERSION(major,minor,patch) \
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(((major) << 16) | ((minor) << 8) | (patch))
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/*!
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@brief The %Exiv2 version number of the library used at compile-time as
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an integer number for easy comparison.
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*/
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#define EXIV2_VERSION \
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EXIV2_MAKE_VERSION(EXIV2_MAJOR_VERSION,EXIV2_MINOR_VERSION,EXIV2_PATCH_VERSION)
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/*!
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@brief Macro to test the version the %Exiv2 library at compile-time.
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Return true if it is the same as or newer than the passed-in version.
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Versions prior to v0.27 are denoted using a triplet of integers: \em MAJOR.MINOR.PATCH .
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From v0.27 forward, the fourth digit is a "tweak" and designates the pre-release number of the version.
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@code
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// Application code is expected to include <exiv2/exiv2.hpp>
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// Don't include the <exiv2/version.hpp> file directly
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// Early Exiv2 versions didn't have version.hpp and the macros.
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#include <exiv2/exiv2.hpp>
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// Make sure an EXIV2_TEST_VERSION macro exists:
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#ifdef EXIV2_VERSION
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# ifndef EXIV2_TEST_VERSION
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# define EXIV2_TEST_VERSION(major,minor,patch) \
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( EXIV2_VERSION >= EXIV2_MAKE_VERSION(major,minor,patch) )
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# endif
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#else
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# define EXIV2_TEST_VERSION(major,minor,patch) (false)
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#endif
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std::cout << "Compiled with Exiv2 version " << EXV_PACKAGE_VERSION << "\n"
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<< "Runtime Exiv2 version is " << Exiv2::version() << "\n";
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// Test the Exiv2 version available at runtime but compile the if-clause only if
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// the compile-time version is at least 0.15. Earlier versions didn't have a
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// testVersion() function:
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#if EXIV2_TEST_VERSION(0,15,0)
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if (Exiv2::testVersion(0,13,0)) {
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std::cout << "Available Exiv2 version is equal to or greater than 0.13\n";
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}
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else {
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std::cout << "Installed Exiv2 version is less than 0.13\n";
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}
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#else
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std::cout << "Compile-time Exiv2 version doesn't have Exiv2::testVersion()\n";
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#endif
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@endcode
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*/
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#define EXIV2_TEST_VERSION(major,minor,patch) \
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( EXIV2_VERSION >= EXIV2_MAKE_VERSION(major,minor,patch) )
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// *****************************************************************************
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// namespace extensions
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namespace Exiv2 {
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/*!
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@brief Return the version of %Exiv2 available at runtime as an integer.
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*/
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EXIV2API int versionNumber();
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/*!
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@brief Return the version string Example: "0.25.0" (major.minor.patch)
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*/
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EXIV2API std::string versionString();
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/*!
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@brief Return the version of %Exiv2 as hex string of fixed length 6.
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*/
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EXIV2API std::string versionNumberHexString();
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/*!
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@brief Return the version of %Exiv2 as "C" string eg "0.27.0.2".
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*/
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EXIV2API const char* version();
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/*!
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@brief Test the version of the available %Exiv2 library at runtime. Return
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true if it is the same as or newer than the passed-in version.
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Versions are denoted using a triplet of integers: \em major.minor.patch .
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The fourth version number is designated a "tweak" an used by Release Candidates
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*/
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EXIV2API bool testVersion(int major, int minor, int patch);
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/*!
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@brief dumpLibraryInfo implements the exiv2 option --version --verbose
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used by exiv2 test suite to inspect libraries loaded at run-time
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*/
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EXIV2API void dumpLibraryInfo(std::ostream& os,const std::vector<std::regex>& keys);
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} // namespace Exiv2
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#endif // VERSION_HPP_
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