void buffer::insert( size_t where, const buffer& from, size_t begin, size_t end )
{
trace_log << "buffer::insert where=" << where << " begin=" << begin << " end=" << end << endl;
if (!from && begin == end)
return;
assert_throw(m_data);
assert_throw(from.m_data);
trace_log << "from.m_data->size=" << from.m_data->size << endl;
assert_throw(type() == from.type());
assert_throw(begin <= end);
assert_throw(end <= from.m_data->size);
assert_throw(where <= m_data->size);
if (begin == end)
return;
make_writable();
m_data->size += end - begin;
switch (m_data->type) {
case BT_UTF16:
case BT_ANSI16:
where *= 2;
begin *= 2;
end *= 2;
break;
}
m_data->buf.insert(m_data->buf.begin() + where,
from.m_data->buf.begin() + begin,
from.m_data->buf.begin() + end);
}
