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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Guido Tack <guido.tack@monash.edu>
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifdef _MSC_VER
#define _CRT_SECURE_NO_WARNINGS
#endif
#include <minizinc/process.hh>
#include <minizinc/solvers/mzn_solverinstance.hh>
#include <minizinc/timer.hh>
#include <cstdio>
#include <fstream>
using namespace std;
namespace MiniZinc {
MZNSolverFactory::MZNSolverFactory() {
SolverConfig sc("org.minizinc.mzn-mzn",
MZN_VERSION_MAJOR "." MZN_VERSION_MINOR "." MZN_VERSION_PATCH);
sc.name("Generic MiniZinc driver");
sc.mznlibVersion(1);
sc.description("MiniZinc generic MiniZinc solver plugin");
sc.requiredFlags({"-m"});
sc.tags({"__internal__"});
sc.inputType(SolverConfig::O_MZN);
sc.needsSolns2Out(false);
SolverConfigs::registerBuiltinSolver(sc);
}
string MZNSolverFactory::getDescription(SolverInstanceBase::Options* /*opt*/) {
string v = "MZN solver plugin";
return v;
}
string MZNSolverFactory::getVersion(SolverInstanceBase::Options* /*opt*/) {
return MZN_VERSION_MAJOR;
}
string MZNSolverFactory::getId() { return "org.minizinc.mzn-mzn"; }
void MZNSolverFactory::printHelp(ostream& os) {
os << "MZN-MZN plugin options:" << std::endl
<< " -m, --minizinc-cmd <exe>\n the backend solver filename.\n"
<< " --mzn-flags <options>, --minizinc-flags <options>, --backend-flags <options>\n"
" Specify option to be passed to the MiniZinc interpreter.\n"
<< " --mzn-flag <option>, --minizinc-flag <option>, --backend-flag <option>\n"
" As above, but for a single option string that need to be quoted in a shell.\n"
<< " -t <ms>, --solver-time-limit <ms>, --mzn-time-limit <ms>\n"
" Set time limit for solving.\n"
<< " --mzn-sigint\n Send SIGINT instead of SIGTERM.\n";
}
SolverInstanceBase::Options* MZNSolverFactory::createOptions() { return new MZNSolverOptions; }
SolverInstanceBase* MZNSolverFactory::doCreateSI(Env& env, std::ostream& log,
SolverInstanceBase::Options* opt) {
return new MZNSolverInstance(env, log, opt);
}
void MZNSolverFactory::setAcceptedFlags(SolverInstanceBase::Options* opt,
const std::vector<MZNFZNSolverFlag>& flags) {
auto& _opt = static_cast<MZNSolverOptions&>(*opt);
_opt.mznSolverFlags.clear();
for (const auto& f : flags) {
if (f.n == "-t") {
_opt.supportsT = true;
} else {
_opt.mznSolverFlags.push_back(f);
}
}
}
bool MZNSolverFactory::processOption(SolverInstanceBase::Options* opt, int& i,
std::vector<std::string>& argv,
const std::string& workingDir) {
auto& _opt = static_cast<MZNSolverOptions&>(*opt);
CLOParser cop(i, argv);
string buffer;
int nn = -1;
if (cop.getOption("-m --minizinc-cmd", &buffer)) {
_opt.mznSolver = buffer;
} else if (cop.getOption("--mzn-flags --minizinc-flags --backend-flags", &buffer)) {
std::vector<std::string> cmdLine = FileUtils::parse_cmd_line(buffer);
for (auto& s : cmdLine) {
_opt.mznFlags.push_back(s);
}
} else if (cop.getOption("-t --solver-time-limit --mzn-time-limit", &nn)) {
_opt.mznTimeLimitMilliseconds = nn;
if (_opt.supportsT) {
_opt.solverTimeLimitMilliseconds = nn;
_opt.mznTimeLimitMilliseconds += 1000; // kill 1 second after solver should have stopped
}
} else if (cop.getOption("--mzn-sigint")) {
_opt.mznSigint = true;
} else if (cop.getOption("--mzn-flag --minizinc-flag --backend-flag", &buffer)) {
_opt.mznFlags.push_back(buffer);
} else if (cop.getOption("--solver-statistics")) {
_opt.printStatistics = true;
} else if (cop.getOption("--verbose-solving")) {
_opt.verbose = true;
} else {
for (auto& mznf : _opt.mznSolverFlags) {
if (mznf.t == MZNFZNSolverFlag::FT_ARG && cop.getOption(mznf.n.c_str(), &buffer)) {
_opt.mznFlags.push_back(mznf.n);
_opt.mznFlags.push_back(buffer);
return true;
}
if (mznf.t == MZNFZNSolverFlag::FT_NOARG && cop.getOption(mznf.n.c_str())) {
_opt.mznFlags.push_back(mznf.n);
return true;
}
}
std::string input_file(argv[i]);
if (input_file.length() <= 4) {
return false;
}
size_t last_dot = input_file.find_last_of('.');
if (last_dot == string::npos) {
return false;
}
std::string extension = input_file.substr(last_dot, string::npos);
if (extension == ".mzn" || extension == ".mzc" || extension == ".fzn" || extension == ".dzn" ||
extension == ".json") {
_opt.mznFlags.push_back(input_file);
} else {
return false;
}
}
return true;
}
MZNSolverInstance::MZNSolverInstance(Env& env, std::ostream& log,
SolverInstanceBase::Options* options)
: SolverInstanceBase(env, log, options) {}
MZNSolverInstance::~MZNSolverInstance() {}
SolverInstance::Status MZNSolverInstance::solve() {
auto& opt = static_cast<MZNSolverOptions&>(*_options);
if (opt.mznSolver.empty()) {
throw Error("No MiniZinc solver specified");
}
/// Passing options to solver
vector<string> cmd_line;
cmd_line.push_back(opt.mznSolver);
for (auto& f : opt.mznFlags) {
cmd_line.push_back(f);
}
if (opt.printStatistics) {
cmd_line.emplace_back("-s");
}
if (opt.verbose) {
cmd_line.emplace_back("-v");
_log << "Using MZN solver " << cmd_line[0] << " for solving, parameters: ";
for (int i = 1; i < cmd_line.size(); ++i) {
_log << "" << cmd_line[i] << " ";
}
_log << std::endl;
}
if (opt.solverTimeLimitMilliseconds != 0) {
cmd_line.emplace_back("-t");
std::ostringstream oss;
oss << opt.solverTimeLimitMilliseconds;
cmd_line.push_back(oss.str());
}
int timelimit = opt.mznTimeLimitMilliseconds;
bool sigint = opt.mznSigint;
Solns2Log s2l(getSolns2Out()->getOutput(), _log);
Process<Solns2Log> proc(cmd_line, &s2l, timelimit, sigint);
int exitCode = proc.run();
return exitCode == 0 ? SolverInstance::UNKNOWN : SolverInstance::ERROR;
}
void MZNSolverInstance::processFlatZinc() {}
void MZNSolverInstance::resetSolver() {}
} // namespace MiniZinc
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