// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com) | |
// (C) Copyright 2005-2007 Jonathan Turkanis | |
// Distributed under the Boost Software License, Version 1.0. (See accompanying | |
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.) | |
// See http://www.boost.org/libs/iostreams for documentation. | |
#ifndef BOOST_IOSTREAMS_DETAIL_COUNTED_ARRAY_HPP_INCLUDED | |
#define BOOST_IOSTREAMS_DETAIL_COUNTED_ARRAY_HPP_INCLUDED | |
#include <algorithm> // min. | |
#include <boost/iostreams/categories.hpp> | |
#include <boost/iostreams/detail/char_traits.hpp> | |
#include <boost/iostreams/detail/ios.hpp> // streamsize. | |
namespace boost { namespace iostreams { namespace detail { | |
template<typename Ch> | |
class counted_array_source { | |
public: | |
typedef Ch char_type; | |
typedef source_tag category; | |
counted_array_source(const Ch* buf, std::streamsize size) | |
: buf_(buf), ptr_(0), end_(size) | |
{ } | |
std::streamsize read(Ch* s, std::streamsize n) | |
{ | |
std::streamsize result = (std::min)(n, end_ - ptr_); | |
BOOST_IOSTREAMS_CHAR_TRAITS(char_type)::copy | |
(s, buf_ + ptr_, result); | |
ptr_ += result; | |
return result; | |
} | |
std::streamsize count() const { return ptr_; } | |
private: | |
const Ch* buf_; | |
std::streamsize ptr_, end_; | |
}; | |
template<typename Ch> | |
struct counted_array_sink { | |
public: | |
typedef Ch char_type; | |
typedef sink_tag category; | |
counted_array_sink(Ch* buf, std::streamsize size) | |
: buf_(buf), ptr_(0), end_(size) | |
{ } | |
std::streamsize write(const Ch* s, std::streamsize n) | |
{ | |
std::streamsize result = (std::min)(n, end_ - ptr_); | |
BOOST_IOSTREAMS_CHAR_TRAITS(char_type)::copy | |
(buf_ + ptr_, s, result); | |
ptr_ += result; | |
return result; | |
} | |
std::streamsize count() const { return ptr_; } | |
private: | |
Ch* buf_; | |
std::streamsize ptr_, end_; | |
}; | |
} } } // End namespaces iostreams, boost. | |
#endif // #ifndef BOOST_IOSTREAMS_DETAIL_COUNTED_ARRAY_HPP_INCLUDED |