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/*
* Copyright (C) 2003-2014 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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 MPD_TEXT_FILE_HXX
#define MPD_TEXT_FILE_HXX
#include "check.h"
#include "Compiler.h"
#include <stddef.h>
class Path;
class Error;
class FileReader;
class AutoGunzipReader;
class BufferedReader;
class TextFile {
FileReader *const file_reader;
#ifdef HAVE_ZLIB
AutoGunzipReader *const gunzip_reader;
#endif
BufferedReader *const buffered_reader;
public:
TextFile(Path path_fs, Error &error);
TextFile(const TextFile &other) = delete;
~TextFile();
bool HasFailed() const {
return gcc_unlikely(buffered_reader == nullptr);
}
/**
* Reads a line from the input file, and strips trailing
* space. There is a reasonable maximum line length, only to
* prevent denial of service.
*
* Use Check() after nullptr has been returned to check
* whether an error occurred or end-of-file has been reached.
*
* @param file the source file, opened in text mode
* @return a pointer to the line, or nullptr on end-of-file or error
*/
char *ReadLine();
/**
* Check whether a ReadLine() call has thrown an error.
*/
bool Check(Error &error) const;
};
#endif
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