108 lines
2.4 KiB
C++
108 lines
2.4 KiB
C++
//
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// VMime library (http://www.vmime.org)
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// Copyright (C) 2002-2013 Vincent Richard <vincent@vmime.org>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 3 of
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// the License, or (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. See the GNU
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// 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 along
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// with this program; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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// Linking this library statically or dynamically with other modules is making
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// a combined work based on this library. Thus, the terms and conditions of
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// the GNU General Public License cover the whole combination.
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//
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#include "vmime/utility/inputStreamStringAdapter.hpp"
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namespace vmime {
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namespace utility {
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inputStreamStringAdapter::inputStreamStringAdapter(const string& buffer)
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: m_buffer(buffer), m_begin(0), m_end(buffer.length()), m_pos(0)
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{
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}
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inputStreamStringAdapter::inputStreamStringAdapter(const string& buffer,
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const size_t begin, const size_t end)
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: m_buffer(buffer), m_begin(begin), m_end(end), m_pos(begin)
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{
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}
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bool inputStreamStringAdapter::eof() const
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{
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return (m_pos >= m_end);
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}
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void inputStreamStringAdapter::reset()
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{
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m_pos = m_begin;
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}
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size_t inputStreamStringAdapter::read
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(byte_t* const data, const size_t count)
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{
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if (m_pos + count >= m_end)
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{
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const size_t remaining = m_end - m_pos;
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std::copy(m_buffer.begin() + m_pos, m_buffer.end(), data);
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m_pos = m_end;
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return (remaining);
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}
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else
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{
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std::copy(m_buffer.begin() + m_pos, m_buffer.begin() + m_pos + count, data);
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m_pos += count;
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return (count);
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}
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}
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size_t inputStreamStringAdapter::skip(const size_t count)
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{
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if (m_pos + count >= m_end)
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{
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const size_t remaining = m_end - m_pos;
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m_pos = m_end;
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return (remaining);
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}
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else
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{
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m_pos += count;
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return (count);
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}
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}
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size_t inputStreamStringAdapter::getPosition() const
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{
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return m_pos - m_begin;
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}
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void inputStreamStringAdapter::seek(const size_t pos)
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{
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if (m_begin + pos <= m_end)
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m_pos = m_begin + pos;
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}
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} // utility
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} // vmime
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