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/*
Author : Shane Neph & Scott Kuehn
Date : Sat Aug 25 01:22:03 PDT 2007
*/
//
// BEDOPS
// Copyright (C) 2011-2022 Shane Neph, Scott Kuehn and Alex Reynolds
//
// This program 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 2 of the License, or
// (at your option) any later version.
//
// This program 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 this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
#ifndef FP_WRAPPER_HPP
#define FP_WRAPPER_HPP
#include <cstddef>
#include <cstdio>
#include <string>
#include "utility/Assertion.hpp"
namespace Ext {
template <typename IOError>
struct FPWrap {
FPWrap() : fp_(NULL)
{ /* */ }
explicit FPWrap(const std::string& file, const std::string& mode = "r")
: fp_( (file == "-") ? stdin : std::fopen(file.c_str(), mode.c_str()) ), name_(file) {
Assert<IOError>(fp_ && fp_ != NULL, "Unable to find file: " + file);
}
inline operator FILE*()
{ return fp_; }
inline void Open(const std::string& file, const std::string& mode = "r") {
if ( fp_ && fp_ != NULL )
Close(); // file already open -> close it
if ( file == "-" )
fp_ = stdin;
else
fp_ = std::fopen(file.c_str(), mode.c_str());
Assert<IOError>(fp_ && fp_ != NULL, "Unable to find file: " + file);
}
inline void Close()
{ if ( fp_ && fp_ != NULL ) std::fclose(fp_); fp_ = NULL; }
inline const std::string& Name() const { return name_; }
~FPWrap()
{ if ( fp_ && fp_ != NULL ) std::fclose(fp_); }
private:
FILE* fp_;
std::string name_;
};
} // namespace Ext
#endif // FP_WRAPPER_HPP
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