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//
// VMime library (http://www.vmime.org)
// Copyright (C) 2002-2012 Vincent Richard <[email protected]>
//
// 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 3 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.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// Linking this library statically or dynamically with other modules is making
// a combined work based on this library. Thus, the terms and conditions of
// the GNU General Public License cover the whole combination.
//
#include "vmime/utility/inputStreamStringAdapter.hpp"
namespace vmime {
namespace utility {
inputStreamStringAdapter::inputStreamStringAdapter(const string& buffer)
: m_buffer(buffer), m_begin(0), m_end(buffer.length()), m_pos(0)
{
}
inputStreamStringAdapter::inputStreamStringAdapter(const string& buffer,
const string::size_type begin, const string::size_type end)
: m_buffer(buffer), m_begin(begin), m_end(end), m_pos(begin)
{
}
bool inputStreamStringAdapter::eof() const
{
return (m_pos >= m_end);
}
void inputStreamStringAdapter::reset()
{
m_pos = m_begin;
}
stream::size_type inputStreamStringAdapter::read
(value_type* const data, const size_type count)
{
if (m_pos + count >= m_end)
{
const size_type remaining = m_end - m_pos;
std::copy(m_buffer.begin() + m_pos, m_buffer.end(), data);
m_pos = m_end;
return (remaining);
}
else
{
std::copy(m_buffer.begin() + m_pos, m_buffer.begin() + m_pos + count, data);
m_pos += count;
return (count);
}
}
stream::size_type inputStreamStringAdapter::skip(const size_type count)
{
if (m_pos + count >= m_end)
{
const size_type remaining = m_end - m_pos;
m_pos = m_end;
return (remaining);
}
else
{
m_pos += count;
return (count);
}
}
stream::size_type inputStreamStringAdapter::getPosition() const
{
return m_pos - m_begin;
}
void inputStreamStringAdapter::seek(const size_type pos)
{
if (m_begin + pos <= m_end)
m_pos = m_begin + pos;
}
} // utility
} // vmime
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