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/*
* Copyright (C) 2014 Tommi Maekitalo
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <tnt/cstream.h>
#include <cxxtools/log.h>
log_define("tntnet.cstream")
namespace tnt
{
cstreambuf::~cstreambuf()
{
log_debug(static_cast<const void*>(this) << " delete " << _chunks.size() << " chunks (dtor)");
for (size_type n = 0; n < _chunks.size(); ++n)
delete[] _chunks[n];
}
void cstreambuf::makeEmpty()
{
log_debug(static_cast<const void*>(this) << " makeEmpty; " << _chunks.size() << " chunks");
if (_chunks.size() > 0)
{
if (_chunks.size() > 1)
{
for (size_type n = 1; n < _chunks.size(); ++n)
{
log_debug(static_cast<const void*>(this) << " delete chunk " << n);
delete[] _chunks[n];
}
_chunks.resize(1);
}
setp(_chunks[0], _chunks[0] + _chunksize);
}
}
std::streambuf::int_type cstreambuf::overflow(std::streambuf::int_type ch)
{
char* chunk = new char[_chunksize];
log_debug(static_cast<const void*>(this) << " new chunk " << static_cast<const void*>(chunk));
_chunks.push_back(chunk);
setp(_chunks.back(), _chunks.back() + _chunksize);
if (ch != traits_type::eof())
sputc(traits_type::to_char_type(ch));
return 0;
}
std::streambuf::int_type cstreambuf::underflow()
{
return traits_type::eof();
}
int cstreambuf::sync()
{
return 0;
}
void cstreambuf::rollback(size_type n)
{
if (n == 0)
{
makeEmpty();
}
else
{
size_type c = (n-1) / _chunksize;
for (size_type cc = c + 1; cc < _chunks.size(); ++cc)
{
log_debug(static_cast<const void*>(this) << " delete chunk " << cc);
delete[] _chunks[cc];
}
_chunks.resize(c + 1);
setp(_chunks[c], _chunks[c] + _chunksize);
pbump(n % _chunksize);
}
}
std::string ocstream::str() const
{
std::string ret;
ret.reserve(size());
for (unsigned n = 0; n < chunkcount(); ++n)
ret.append(chunk(n), chunksize(n));
return ret;
}
void ocstream::output(std::ostream& out) const
{
for (unsigned n = 0; n < chunkcount(); ++n)
out.write(chunk(n), chunksize(n));
}
}
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