69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
/*
|
|
* 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 "Path.hxx"
|
|
|
|
#include <glib.h>
|
|
|
|
#include <stdio.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.c_str(), "r")),
|
|
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
|