68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
/*
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* Copyright (C) 2003-2013 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_TEXT_FILE_HXX
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#define MPD_TEXT_FILE_HXX
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#include "gcc.h"
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#include "fs/Path.hxx"
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#include "fs/FileSystem.hxx"
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#include <glib.h>
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class TextFile {
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static constexpr size_t max_length = 512 * 1024;
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static constexpr size_t step = 1024;
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FILE *const file;
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GString *const buffer;
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public:
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TextFile(const Path &path_fs)
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:file(FOpen(path_fs, FOpenMode::ReadText)),
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buffer(g_string_sized_new(step)) {}
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TextFile(const TextFile &other) = delete;
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~TextFile() {
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if (file != nullptr)
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fclose(file);
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g_string_free(buffer, true);
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}
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bool HasFailed() const {
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return gcc_unlikely(file == nullptr);
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}
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/**
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* Reads a line from the input file, and strips trailing
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* space. There is a reasonable maximum line length, only to
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* prevent denial of service.
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*
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* @param file the source file, opened in text mode
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* @param buffer an allocator for the buffer
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* @return a pointer to the line, or NULL on end-of-file or error
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*/
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char *ReadLine();
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};
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#endif
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