83 lines
1.7 KiB
C++
83 lines
1.7 KiB
C++
/*
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* Copyright (C) 2003-2015 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_BUFFERED_READER_HXX
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#define MPD_BUFFERED_READER_HXX
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#include "check.h"
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#include "Compiler.h"
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#include "util/DynamicFifoBuffer.hxx"
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#include "util/Error.hxx"
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#include <stddef.h>
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class Reader;
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class Error;
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class BufferedReader {
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static constexpr size_t MAX_SIZE = 512 * 1024;
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Reader &reader;
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DynamicFifoBuffer<char> buffer;
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Error last_error;
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bool eof;
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unsigned line_number;
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public:
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BufferedReader(Reader &_reader)
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:reader(_reader), buffer(4096), eof(false),
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line_number(0) {}
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gcc_pure
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bool Check() const {
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return !last_error.IsDefined();
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}
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bool Check(Error &error) const {
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if (last_error.IsDefined()) {
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error.Set(last_error);
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return false;
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} else
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return true;
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}
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bool Fill(bool need_more);
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gcc_pure
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WritableBuffer<void> Read() const {
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return buffer.Read().ToVoid();
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}
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void Consume(size_t n) {
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buffer.Consume(n);
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}
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char *ReadLine();
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unsigned GetLineNumber() const {
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return line_number;
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}
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};
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#endif
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