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/*************************************************************************
** SourceInput.hpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2022 Martin Gieseking <martin.gieseking@uos.de> **
** **
** 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 3 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, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#ifndef SOURCEINPUT_HPP
#define SOURCEINPUT_HPP
#include <fstream>
#include <string>
/** Helper class to handle temporary files. */
class TemporaryFile {
public:
~TemporaryFile () {close();}
bool create ();
bool opened () const {return _fd >= 0;}
bool write (const char *buf, size_t len);
bool close ();
const std::string& path () const {return _path;}
private:
int _fd = -1; ///< file descriptor assigned to the temporary file
std::string _path; ///< path to temporary file
};
class SourceInput {
public:
explicit SourceInput (const std::string &fname) : _fname(fname) {}
std::istream& getInputStream (bool showMessages=false);
std::string getFileName () const;
std::string getMessageFileName () const;
std::string getFilePath () const;
private:
const std::string &_fname; ///< name of file to read from
TemporaryFile _tmpfile; ///< temporary file used when reading from stdin
std::ifstream _ifs;
};
#endif
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