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// {{{ MIT License
// Copyright 2017 Roland Kaminski
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
// }}}
#ifdef CLINGO_WITH_LUA
#include <luaclingo.h>
#endif
#include "clingo/clingo_app.hh"
#include "clingo/scripts.hh"
#include <iterator>
class ExitException : public std::exception {
public:
ExitException(int status) : status_(status) {
std::ostringstream oss;
oss << "exited with status: " << status_;
msg_ = oss.str();
}
int status() const { return status_; }
char const *what() const noexcept { return msg_.c_str(); }
~ExitException() = default;
private:
std::string msg_;
int status_;
};
struct WebApp : Gringo::ClingoApp {
void exit(int status) const { throw ExitException(status); }
};
extern "C" int run(char const *program, char const *options) {
try {
#ifdef CLINGO_WITH_LUA
Gringo::g_scripts() = Gringo::Scripts();
clingo_register_lua_(nullptr);
#endif
std::streambuf *orig = std::cin.rdbuf();
auto exit(Gringo::onExit([orig] { std::cin.rdbuf(orig); }));
std::istringstream input(program);
std::cin.rdbuf(input.rdbuf());
std::vector<std::vector<char>> opts;
opts.emplace_back(std::initializer_list<char>{'c', 'l', 'i', 'n', 'g', 'o', '\0'});
std::istringstream iss(options);
for (std::istream_iterator<std::string> it(iss), ie; it != ie; ++it) {
opts.emplace_back(it->c_str(), it->c_str() + it->size() + 1);
}
std::vector<char *> args;
for (auto &opt : opts) {
args.emplace_back(opt.data());
}
WebApp app;
args.emplace_back(nullptr);
return app.main(args.size() - 2, args.data());
} catch (ExitException const &e) {
return e.status();
}
}
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