/// Writes the results, according to the given flags
class_type& write(size_t numResults, ff_string_slice_t const* results, int flags)
{
stlsoft::auto_buffer<iovec> vectors(numResults + 2);
ff_string_slice_t crlf = fastformat_getNewlineForPlatform();
#ifdef STLSOFT_CF_THROW_BAD_ALLOC
if(!vectors.empty())
#endif /* STLSOFT_CF_THROW_BAD_ALLOC */
{
STLSOFT_ASSERT(vectors.size() == numResults + 2);
{ for(size_t i = 0; i != vectors.size() - 2; ++i)
{
vectors[i].iov_base = const_cast<char*>(results[i].ptr);
vectors[i].iov_len = results[i].len;
}}
if(!m_delim.empty())
{
vectors[vectors.size() - 2].iov_base = const_cast<char*>(m_delim.data());
vectors[vectors.size() - 2].iov_len = m_delim.size();
}
else
{
vectors.resize(vectors.size() - 1);
}
if(flags::ff_newLine & flags)
{
vectors[vectors.size() - 1].iov_base = const_cast<char*>(crlf.ptr);
vectors[vectors.size() - 1].iov_len = crlf.len;
}
else
{
vectors.resize(vectors.size() - 1);
}
if(::writev(m_fh, &vectors[0], static_cast<int>(vectors.size())) < 0)
{
#ifdef STLSOFT_CF_EXCEPTION_SUPPORT
throw platformstl::platform_exception("failed to write vector payload", errno);
#endif /* STLSOFT_CF_EXCEPTION_SUPPORT */
}
#if 0
if(flags::ff_flush & flags)
{
::flush(m_fh);
}
#endif /* 0 */
}
return *this;
}
/// Outputs the results, according to the given flags
class_type& write(size_type cchTotal, size_type numResults, ff_string_slice_t const* results, int flags)
{
const ff_string_slice_t crlf = fastformat_getNewlineForPlatform();
const size_type requiredSize = size()
+ cchTotal
+ ((flags::ff_newLine & flags) ? crlf.len : 0)
;
if(requiredSize > capacity())
{
throw std::out_of_range("character buffer sink capacity exceeded");
}
else
{
char_type* p = &m_buffer[0] + size();
// next we concatenate all the slices
{ for(size_type i = 0; i < numResults; ++i)
{
ff_string_slice_t const& slice = results[i];
::memcpy(p, slice.ptr, slice.len * sizeof(char_type));
p += slice.len;
}}
m_len += cchTotal;
// then append the new line, if required
if(flags::ff_newLine & flags)
{
::memcpy(p, crlf.ptr, crlf.len * sizeof(char_type));
p += crlf.len;
m_len += crlf.len;
}
FASTFORMAT_CONTRACT_ENFORCE_POSTCONDITION_STATE_APPL_LAYER(p == &m_buffer[0] + size(), "char_buffer sink writing logic failed: write pointer in wrong place");
}
return *this;
}
