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/*
* Copyright (C) 2003-2013 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 "gcc.h"
#include "fs/Path.hxx"
#include "fs/FileSystem.hxx"
#include <glib.h>
class TextFile {
static constexpr size_t max_length = 512 * 1024;
static constexpr size_t step = 1024;
FILE *const file;
GString *const buffer;
public:
TextFile(const Path &path_fs)
:file(FOpen(path_fs, FOpenMode::ReadText)),
buffer(g_string_sized_new(step)) {}
TextFile(const TextFile &other) = delete;
~TextFile() {
if (file != nullptr)
fclose(file);
g_string_free(buffer, true);
}
bool HasFailed() const {
return gcc_unlikely(file == 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.
*
* @param file the source file, opened in text mode
* @param buffer an allocator for the buffer
* @return a pointer to the line, or NULL on end-of-file or error
*/
char *ReadLine();
};
#endif
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