1 // Copyright 2014 Renato Tegon Forti, Antony Polukhin.
2 // Copyright 2015-2019 Antony Polukhin.
3 //
4 // Distributed under the Boost Software License, Version 1.0.
5 // (See accompanying file LICENSE_1_0.txt
6 // or copy at http://www.boost.org/LICENSE_1_0.txt)
7 
8 #include <vector>
9 #include "../b2_workarounds.hpp"
10 
11 //[callplugcpp_tutorial7
12 #include <boost/dll/shared_library.hpp>
13 #include <boost/dll/library_info.hpp>
14 #include <iostream>
15 
load_and_execute(const boost::dll::fs::path libraries[],std::size_t libs_count)16 void load_and_execute(const boost::dll::fs::path libraries[], std::size_t libs_count) {
17     const std::string username = "User";
18 
19     for (std::size_t i = 0; i < libs_count; ++i) {
20         // Class `library_info` can extract information from a library
21         boost::dll::library_info inf(libraries[i]);
22 
23         // Getting symbols exported from 'Anna' section
24         std::vector<std::string> exports = inf.symbols("Anna");
25 
26         // Loading library and importing symbols from it
27         boost::dll::shared_library lib(libraries[i]);
28         for (std::size_t j = 0; j < exports.size(); ++j) {
29             std::cout << "\nFunction '" << exports[j] << "' prints:\n\t";
30             lib.get_alias<void(const std::string&)>(exports[j]) // importing function
31                 (username);                                     // calling function
32         }
33     }
34 }
35 //]
36 
main(int argc,char * argv[])37 int main(int argc, char* argv[]) {
38     /*<-*/ BOOST_ASSERT(argc >= 3); /*->*/
39     std::vector<boost::dll::fs::path> libraries;
40     libraries.reserve(argc - 1);
41     for (int i = 1; i < argc; ++i) {
42         if (b2_workarounds::is_shared_library(argv[i])) {
43             libraries.push_back(argv[i]);
44         }
45     }
46 
47     load_and_execute(&libraries[0], libraries.size());
48 }
49