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//
// VMime library (http://www.vmime.org)
// Copyright (C) 2002-2005 Vincent Richard <vincent@vincent-richard.net>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// This program 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
#include "vmime/utility/filteredStream.hpp"
#include <algorithm>
namespace vmime {
namespace utility {
// dotFilteredOutputStream
dotFilteredOutputStream::dotFilteredOutputStream(outputStream& os)
: m_stream(os)
{
}
outputStream& dotFilteredOutputStream::getNextOutputStream()
{
return (m_stream);
}
void dotFilteredOutputStream::write
(const value_type* const data, const size_type count)
{
const value_type* pos = data;
const value_type* end = data + count;
const value_type* start = data;
// Replace "\n." with "\n.."
while ((pos = std::find(pos, end, '.')) != end)
{
const value_type previousChar =
(pos == data ? m_previousChar : *(pos - 1));
if (previousChar == '\n')
{
m_stream.write(start, pos - data);
m_stream.write("..", 2);
start = pos + 1;
}
++pos;
}
m_stream.write(start, end - start);
m_previousChar = data[count - 1];
}
// CRLFToLFFilteredOutputStream
CRLFToLFFilteredOutputStream::CRLFToLFFilteredOutputStream(outputStream& os)
: m_stream(os)
{
}
outputStream& CRLFToLFFilteredOutputStream::getNextOutputStream()
{
return (m_stream);
}
void CRLFToLFFilteredOutputStream::write
(const value_type* const data, const size_type count)
{
const value_type* pos = data;
const value_type* end = data + count;
const value_type* start = data;
// Replace "\r\n" (CRLF) with "\n" (LF)
while ((pos = std::find(pos, end, '\n')) != end)
{
const value_type previousChar =
(pos == data ? m_previousChar : *(pos - 1));
if (previousChar == '\r')
{
m_stream.write(start, pos - 1 - data); // do not write \r
m_stream.write("\n", 1);
start = pos + 1;
}
++pos;
}
m_stream.write(start, end - start);
m_previousChar = data[count - 1];
}
} // utility
} // vmime
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