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openmw-tes3mp/extern/mygui_3.0.1/MyGUIEngine/src/MyGUI_DataStream.cpp
2010-07-08 00:23:28 +02:00

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C++

/*!
@file
@author Albert Semenov
@date 08/2009
@module
*/
/*
This file is part of MyGUI.
MyGUI is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
MyGUI 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with MyGUI. If not, see <http://www.gnu.org/licenses/>.
*/
#include "MyGUI_Precompiled.h"
#include "MyGUI_DataStream.h"
namespace MyGUI
{
DataStream::DataStream() :
mStream(nullptr),
mSize((size_t)-1)
{
}
DataStream::DataStream(std::istream* _stream) :
mStream(_stream),
mSize((size_t)-1)
{
}
DataStream::~DataStream()
{
}
size_t DataStream::size()
{
if (mStream == nullptr) return 0;
if (mSize == (size_t)-1)
{
mStream->seekg (0, std::ios::end);
mSize = mStream->tellg();
mStream->seekg (0, std::ios::beg);
}
return mSize;
}
bool DataStream::eof()
{
return mStream == nullptr ? true : mStream->eof();
}
void DataStream::readline(std::string& _source, Char _delim)
{
if (mStream == nullptr) return;
std::getline(*mStream, _source, (char)_delim);
}
size_t DataStream::read(void* _buf, size_t _count)
{
if (mStream == nullptr) return 0;
size_t count = std::min(size(), _count);
mStream->read((char*)_buf, count);
return count;
}
} // namespace MyGUI