102 lines
2.7 KiB
C++
102 lines
2.7 KiB
C++
/*
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* This file is part of the Colobot: Gold Edition source code
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* Copyright (C) 2001-2023, Daniel Roux, EPSITEC SA & TerranovaTeam
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* http://epsitec.ch; http://colobot.info; http://github.com/colobot
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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 3 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.
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* See the 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 this program. If not, see http://gnu.org/licenses
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*/
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#include "common/resources/outputstreambuffer.h"
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#include "common/resources/resourcemanager.h"
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#include <stdexcept>
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#include <sstream>
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COutputStreamBuffer::COutputStreamBuffer(std::size_t bufferSize)
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: m_file(nullptr)
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{
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if (bufferSize <= 0)
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{
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throw std::runtime_error("File buffer must be larger then 0 bytes");
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}
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m_buffer = std::make_unique<char[]>(bufferSize);
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setp(m_buffer.get(), m_buffer.get() + bufferSize);
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}
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COutputStreamBuffer::~COutputStreamBuffer()
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{
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close();
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}
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void COutputStreamBuffer::open(const std::filesystem::path& path, std::ios_base::openmode mode)
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{
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if (PHYSFS_isInit())
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{
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if ( mode == std::ios_base::out )
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m_file = PHYSFS_openWrite(CResourceManager::CleanPath(path.generic_u8string()).c_str());
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else if ( mode == std::ios_base::app )
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m_file = PHYSFS_openAppend(CResourceManager::CleanPath(path.generic_u8string()).c_str());
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}
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}
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void COutputStreamBuffer::close()
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{
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sync();
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if (is_open())
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PHYSFS_close(m_file);
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}
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bool COutputStreamBuffer::is_open()
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{
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return m_file != nullptr;
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}
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std::streambuf::int_type COutputStreamBuffer::overflow(std::streambuf::int_type ch)
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{
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/* This function should be called when pptr() == epptr(). We use it also in sync()
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so we also have to write data if buffer is not full. */
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if (pbase() == pptr()) // no data to write, sync() called with empty buffer
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return 0;
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// save buffer
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PHYSFS_sint64 bytes_written = PHYSFS_writeBytes(m_file, pbase(), pptr() - pbase());
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if (bytes_written <= 0)
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return traits_type::eof();
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pbump(-bytes_written);
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// write final char
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if (ch != traits_type::eof())
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{
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bytes_written = PHYSFS_writeBytes(m_file, &ch, 1);
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if (bytes_written <= 0)
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return traits_type::eof();
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}
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return ch;
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}
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int COutputStreamBuffer::sync()
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{
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return overflow(traits_type::eof());
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}
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