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- // Copyright 2014 Renato Tegon Forti, Antony Polukhin.
- // Copyright 2015-2019 Antony Polukhin.
- //
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE_1_0.txt
- // or copy at http://www.boost.org/LICENSE_1_0.txt)
- #ifndef BOOST_DLL_EXAMPLE_COMMON_B2_WORKAROUNDS_HPP
- #define BOOST_DLL_EXAMPLE_COMMON_B2_WORKAROUNDS_HPP
- #include <boost/dll/config.hpp>
- #include <boost/filesystem.hpp>
- #include <boost/system/error_code.hpp>
- #include <iostream>
- #include <cctype>
- namespace b2_workarounds {
- inline boost::filesystem::path drop_version(const boost::filesystem::path& lhs) {
- boost::filesystem::path ext = lhs.filename().extension();
- if (ext.native().size() > 1 && std::isdigit(ext.string()[1])) {
- ext = lhs;
- ext.replace_extension().replace_extension().replace_extension();
- return ext;
- }
- return lhs;
- }
- inline bool is_shared_library(const std::string& s) {
- return (s.find(".dll") != std::string::npos || s.find(".so") != std::string::npos || s.find(".dylib") != std::string::npos)
- && s.find(".lib") == std::string::npos
- && s.find(".exp") == std::string::npos
- && s.find(".pdb") == std::string::npos
- && s.find(".manifest") == std::string::npos
- && s.find(".rsp") == std::string::npos
- && s.find(".obj") == std::string::npos
- && s.find(".a") == std::string::npos;
- }
- inline bool is_shared_library(const char* p) {
- return b2_workarounds::is_shared_library(std::string(p));
- }
- inline bool is_shared_library(const boost::filesystem::path& p) {
- return b2_workarounds::is_shared_library(p.string());
- }
- inline boost::dll::fs::path first_lib_from_argv(int argc, char* argv[]) {
- BOOST_ASSERT(argc > 1);
- (void)argc;
- for (int i = 1; i < argc; ++i) {
- if (b2_workarounds::is_shared_library(argv[i])) {
- return argv[i];
- }
- std::cout << "b2_workarounds::first_lib_from_argv(argc, argv): skipping '" << argv[i] << "'" << std::endl;
- }
- BOOST_ASSERT(false);
- return argv[1];
- }
- // This ugly struct is required to drop library version from shared library generated by b2.
- struct argv_to_path_guard {
- const boost::filesystem::path original_;
- const boost::filesystem::path version_dropped_;
- const std::string just_path_;
- const bool same_;
- static inline boost::filesystem::path drop_b2_deco(const boost::filesystem::path& in) {
- std::size_t pos = in.filename().string().find("-");
- boost::filesystem::path res = in.parent_path() / in.filename().string().substr(0, in.filename().string().find("-"));
- if (pos != std::string::npos) {
- res += in.extension();
- }
- return res;
- }
- inline explicit argv_to_path_guard(int argc, char* argv[])
- : original_(first_lib_from_argv(argc, argv))
- , version_dropped_( drop_b2_deco(drop_version(original_)) )
- , just_path_( version_dropped_.parent_path().string() )
- , same_(version_dropped_ == original_)
- {
- if (!same_) {
- boost::system::error_code ignore;
- boost::filesystem::remove(version_dropped_, ignore);
- boost::filesystem::copy(original_, version_dropped_, ignore);
- }
- argv[1] = const_cast<char*>(just_path_.c_str());
- }
- inline ~argv_to_path_guard() {
- if (!same_) {
- boost::system::error_code ignore;
- boost::filesystem::remove(version_dropped_, ignore);
- }
- }
- };
- } // namespace b2_workarounds
- #endif // BOOST_DLL_EXAMPLE_COMMON_B2_WORKAROUNDS_HPP
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