1 //  Copyright (c) 2001-2011 Hartmut Kaiser
2 //
3 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
4 //  file LICENSE_1_0.txt or copy at http://www.boist.org/LICENSE_1_0.txt)
5 
6 #if !defined(BOOST_SPIRIT_ITERATOR_SINK_MAY_27_2007_0133PM)
7 #define BOOST_SPIRIT_ITERATOR_SINK_MAY_27_2007_0133PM
8 
9 #if defined(_MSC_VER)
10 #pragma once
11 #endif
12 
13 #include <boost/iostreams/stream.hpp>
14 #include <boost/spirit/home/karma/detail/generate_to.hpp>
15 
16 ///////////////////////////////////////////////////////////////////////////////
17 namespace boost { namespace spirit { namespace karma { namespace detail
18 {
19     ///////////////////////////////////////////////////////////////////////////
20     template <
21         typename OutputIterator, typename Char, typename CharEncoding
22       , typename Tag
23     >
24     struct iterator_sink
25     {
26         typedef boost::iostreams::sink_tag category;
27         typedef Char char_type;
28 
iterator_sinkboost::spirit::karma::detail::iterator_sink29         iterator_sink (OutputIterator& sink_)
30           : sink(sink_)
31         {}
32 
33         // Write up to n characters from the buffer s to the output sequence,
34         // returning the number of characters written
writeboost::spirit::karma::detail::iterator_sink35         std::streamsize write (Char const* s, std::streamsize n)
36         {
37             std::streamsize bytes_written = 0;
38             while (n--) {
39                 if (!generate_to(sink, *s, CharEncoding(), Tag()))
40                     break;
41                 ++s; ++bytes_written;
42             }
43             return bytes_written;
44         }
45 
46         OutputIterator& sink;
47 
48         // silence MSVC warning C4512: assignment operator could not be generated
49         BOOST_DELETED_FUNCTION(iterator_sink& operator= (iterator_sink const&))
50     };
51 
52 }}}}
53 
54 #endif
55