forked from 0ad/0ad
janwas
93ab45e434
ensure struct stat has 64-bit fields on windows also fixed some warnings This was SVN commit r7120.
79 lines
1.8 KiB
C++
79 lines
1.8 KiB
C++
/* Copyright (C) 2009 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. 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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* 0 A.D. 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
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef INCLUDED_WRITE_BUFFER
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#define INCLUDED_WRITE_BUFFER
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#include "lib/file/file.h"
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class WriteBuffer
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{
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public:
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WriteBuffer();
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void Append(const void* data, size_t size);
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void Overwrite(const void* data, size_t size, size_t offset);
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shared_ptr<u8> Data() const
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{
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return m_data;
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}
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size_t Size() const
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{
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return m_size;
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}
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private:
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size_t m_capacity; // must come first (init order)
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shared_ptr<u8> m_data;
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size_t m_size;
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};
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class UnalignedWriter
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{
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NONCOPYABLE(UnalignedWriter);
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public:
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UnalignedWriter(const PFile& file, off_t ofs);
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~UnalignedWriter();
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/**
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* add data to the align buffer, writing it out to disk if full.
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**/
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LibError Append(const u8* data, size_t size) const;
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/**
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* zero-initialize any remaining space in the align buffer and write
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* it to the file. this is called by the destructor.
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**/
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void Flush() const;
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private:
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LibError WriteBlock() const;
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PFile m_file;
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shared_ptr<u8> m_alignedBuf;
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mutable off_t m_alignedOfs;
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mutable size_t m_bytesUsed;
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};
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typedef shared_ptr<UnalignedWriter> PUnalignedWriter;
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#endif // #ifndef INCLUDED_WRITE_BUFFER
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