forked from krizsa/o3
/
cBufStream.h
112 lines (92 loc) · 2.09 KB
/
cBufStream.h
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/*
* Copyright (C) 2010 Ajax.org BV
*
* This library 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 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 General Public License for more
* details.
*
* You should have received a copy of the GNU 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.
*/
namespace o3 {
struct cBufStream : cStreamBase {
Buf m_buf;
size_t m_pos;
cBufStream()
: m_pos(0)
{
}
cBufStream(Buf& buf)
: m_pos(0)
{
m_buf = buf;
}
virtual ~cBufStream()
{
}
o3_begin_class(cStreamBase)
o3_end_class()
bool eof()
{
return m_pos == m_buf.size();
}
bool error()
{
return false;
}
size_t pos()
{
return m_pos;
}
size_t setPos(size_t pos)
{
if (pos > m_buf.size())
return m_pos;
return m_pos = pos;
}
size_t read(void* ptr, size_t size)
{
size_t left = m_buf.size() - m_pos;
size_t to_read = min(left,size);
memCopy(ptr, ((uint8_t*)m_buf.ptr()) + m_pos, to_read);
m_pos += to_read;
return to_read;
}
size_t write(const void* ptr, size_t size)
{
size_t left = m_buf.size() - m_pos;
size_t to_del = min(left,size);
m_buf.remove(m_pos,to_del);
m_buf.insert(m_pos, ptr, size);
m_pos += size;
return size;
}
bool flush()
{
return true;
}
bool close()
{
return true;
}
size_t size()
{
return m_buf.size();
}
void* unwrap()
{
return 0;
}
Buf buf()
{
return m_buf;
}
};
} // namespace o3