app_helper.hpp
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// Copyright (c) 2017-2021, University of Cincinnati, developed by Henry Schreiner
// under NSF AWARD 1414736 and by the respective contributors.
// All rights reserved.
//
// SPDX-License-Identifier: BSD-3-Clause
#pragma once
#ifdef CLI11_SINGLE_FILE
#include "CLI11.hpp"
#else
#include "CLI/CLI.hpp"
#endif
#include "catch.hpp"
#include <iostream>
#include <string>
#include <utility>
#include <vector>
using input_t = std::vector<std::string>;
class TApp {
public:
CLI::App app{"My Test Program"};
input_t args{};
virtual ~TApp() = default;
void run() {
// It is okay to re-parse - clear is called automatically before a parse.
input_t newargs = args;
std::reverse(std::begin(newargs), std::end(newargs));
app.parse(newargs);
}
};
class TempFile {
std::string _name{};
public:
explicit TempFile(std::string name) : _name(std::move(name)) {
if(!CLI::NonexistentPath(_name).empty())
throw std::runtime_error(_name);
}
~TempFile() {
std::remove(_name.c_str()); // Doesn't matter if returns 0 or not
}
operator const std::string &() const { return _name; }
const char *c_str() const { return _name.c_str(); }
};
inline void put_env(std::string name, std::string value) {
#ifdef _WIN32
_putenv_s(name.c_str(), value.c_str());
#else
setenv(name.c_str(), value.c_str(), 1);
#endif
}
inline void unset_env(std::string name) {
#ifdef _WIN32
_putenv_s(name.c_str(), "");
#else
unsetenv(name.c_str());
#endif
}