101 lines
2.9 KiB
C++
101 lines
2.9 KiB
C++
//This file is part of Bertini 2.
|
|
//
|
|
//bertini2/io/file_utilities.hpp is free software: you can redistribute it and/or modify
|
|
//it under the terms of the GNU General Public License as published by
|
|
//the Free Software Foundation, either version 3 of the License, or
|
|
//(at your option) any later version.
|
|
//
|
|
//bertini2/io/file_utilities.hpp is distributed in the hope that it will be useful,
|
|
//but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
//GNU General Public License for more details.
|
|
//
|
|
//You should have received a copy of the GNU General Public License
|
|
//along with bertini2/io/file_utilities.hpp. If not, see <http://www.gnu.org/licenses/>.
|
|
//
|
|
// Copyright(C) 2015 - 2021 by Bertini2 Development Team
|
|
//
|
|
// See <http://www.gnu.org/licenses/> for a copy of the license,
|
|
// as well as COPYING. Bertini2 is provided with permitted
|
|
// additional terms in the b2/licenses/ directory.
|
|
|
|
// individual authors of this file include:
|
|
// silviana amethyst, university of wisconsin-eau claire
|
|
|
|
/**
|
|
\file bertini2/io/file_utilities.hpp
|
|
|
|
\brief Provides the file_utilities screens for bertini2.
|
|
*/
|
|
|
|
#pragma once
|
|
#include <iostream>
|
|
#include <fstream>
|
|
#include <boost/filesystem.hpp>
|
|
|
|
namespace bertini{
|
|
|
|
namespace fs = boost::filesystem;
|
|
|
|
using Path = fs::path;
|
|
|
|
using ifstream = std::ifstream;
|
|
/**
|
|
\brief Try to open a file, and throw if it doesn't exist, or is a directory.
|
|
*/
|
|
inline
|
|
void OpenInFileThrowIfFail(ifstream & in,
|
|
Path const& input_path)
|
|
{
|
|
using namespace fs;
|
|
try{
|
|
if (exists(input_path))
|
|
{
|
|
if (is_directory(input_path))
|
|
{
|
|
std::stringstream err_msg;
|
|
err_msg << "attempting to open file but is a directory, of name '" << input_path.string() << "'";
|
|
throw std::runtime_error(err_msg.str());
|
|
}
|
|
else
|
|
{
|
|
in.open(input_path.c_str());
|
|
if (!in.is_open())
|
|
{
|
|
std::stringstream err_msg;
|
|
err_msg << "file '" << input_path.string() << "' hypothetically exists, but failed to open correctly";
|
|
throw std::runtime_error(err_msg.str());
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
std::stringstream err_msg;
|
|
err_msg << "attempting to open file which doesn't exist, of name '" << input_path.string() << "'";
|
|
throw std::runtime_error(err_msg.str());
|
|
}
|
|
}
|
|
catch (const filesystem_error& ex)
|
|
{
|
|
std::stringstream err_msg;
|
|
err_msg << "boost::filesystem throw while attempting to open file '" << input_path.string() << "': '" << ex.what() << "'";
|
|
throw std::runtime_error(err_msg.str());
|
|
}
|
|
}
|
|
|
|
/**
|
|
\brief Read an entire file into a string.
|
|
|
|
\return The string, now contaning the file.
|
|
\param input_path The path to the file.
|
|
*/
|
|
inline
|
|
std::string FileToString(Path const& input_path)
|
|
{
|
|
ifstream infile;
|
|
OpenInFileThrowIfFail(infile, input_path);
|
|
return std::string ( std::istreambuf_iterator<char>(infile), std::istreambuf_iterator<char>() );
|
|
}
|
|
}
|
|
|