Chris@16: //  Copyright (c) 2001-2011 Hartmut Kaiser
Chris@16: // 
Chris@16: //  Distributed under the Boost Software License, Version 1.0. (See accompanying 
Chris@16: //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #if !defined(BOOST_SPIRIT_KARMA_STRING_GENERATE_FEB_23_2007_1232PM)
Chris@16: #define BOOST_SPIRIT_KARMA_STRING_GENERATE_FEB_23_2007_1232PM
Chris@16: 
Chris@16: #if defined(_MSC_VER)
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <string>
Chris@16: #include <boost/spirit/home/support/char_class.hpp>
Chris@16: #include <boost/spirit/home/karma/detail/generate_to.hpp>
Chris@16: #include <boost/range/const_iterator.hpp>
Chris@16: 
Chris@16: namespace boost { namespace spirit { namespace karma { namespace detail
Chris@16: {
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     // pass through character transformation
Chris@16:     struct pass_through_filter
Chris@16:     {
Chris@16:         template <typename Char>
Chris@16:         Char operator()(Char ch) const
Chris@16:         {
Chris@16:             return ch;
Chris@16:         }
Chris@16:     };
Chris@16: 
Chris@16:     template <typename CharEncoding, typename Tag>
Chris@16:     struct encoding_filter
Chris@16:     {
Chris@16:         template <typename Char>
Chris@16:         Char operator()(Char ch) const
Chris@16:         {
Chris@16:             return spirit::char_class::convert<CharEncoding>::to(Tag(), ch);
Chris@16:         }
Chris@16:     };
Chris@16: 
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     //  generate a string given by a std::string, applying the given filter
Chris@16:     template <typename OutputIterator, typename Char, typename Filter>
Chris@16:     inline bool string_generate(OutputIterator& sink, Char const* str
Chris@16:       , Filter filter)
Chris@16:     {
Chris@16:         for (Char ch = *str; ch != 0; ch = *++str)
Chris@16:         {
Chris@16:             *sink = filter(ch);
Chris@16:             ++sink;
Chris@16:         }
Chris@16:         return detail::sink_is_good(sink);
Chris@16:     }
Chris@16: 
Chris@16:     template <typename OutputIterator, typename Container, typename Filter>
Chris@16:     inline bool string_generate(OutputIterator& sink
Chris@16:       , Container const& c, Filter filter)
Chris@16:     {
Chris@16:         typedef typename traits::container_iterator<Container const>::type 
Chris@16:             iterator;
Chris@16: 
Chris@16:         iterator end = boost::end(c);
Chris@16:         for (iterator it = boost::begin(c); it != end; ++it)
Chris@16:         {
Chris@16:             *sink = filter(*it);
Chris@16:             ++sink;
Chris@16:         }
Chris@16:         return detail::sink_is_good(sink);
Chris@16:     }
Chris@16: 
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     //  generate a string without any transformation
Chris@16:     template <typename OutputIterator, typename Char>
Chris@16:     inline bool string_generate(OutputIterator& sink, Char const* str)
Chris@16:     {
Chris@16:         return string_generate(sink, str, pass_through_filter());
Chris@16:     }
Chris@16: 
Chris@16:     template <typename OutputIterator, typename Char, typename Traits
Chris@16:       , typename Allocator>
Chris@16:     inline bool string_generate(OutputIterator& sink
Chris@16:       , std::basic_string<Char, Traits, Allocator> const& str)
Chris@16:     {
Chris@16:         return string_generate(sink, str.c_str(), pass_through_filter());
Chris@16:     }
Chris@16: 
Chris@16:     template <typename OutputIterator, typename Container>
Chris@16:     inline bool string_generate(OutputIterator& sink
Chris@16:       , Container const& c)
Chris@16:     {
Chris@16:         return string_generate(sink, c, pass_through_filter());
Chris@16:     }
Chris@16: 
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     //  generate a string given by a pointer, converting according using a 
Chris@16:     //  given character class and case tag
Chris@16:     template <typename OutputIterator, typename Char, typename CharEncoding
Chris@16:       , typename Tag>
Chris@16:     inline bool string_generate(OutputIterator& sink
Chris@16:       , Char const* str
Chris@16:       , CharEncoding, Tag)
Chris@16:     {
Chris@16:         return string_generate(sink, str, encoding_filter<CharEncoding, Tag>());
Chris@16:     }
Chris@16: 
Chris@16:     template <typename OutputIterator, typename Char
Chris@16:       , typename CharEncoding, typename Tag
Chris@16:       , typename Traits, typename Allocator>
Chris@16:     inline bool string_generate(OutputIterator& sink
Chris@16:       , std::basic_string<Char, Traits, Allocator> const& str
Chris@16:       , CharEncoding, Tag)
Chris@16:     {
Chris@16:         return string_generate(sink, str.c_str()
Chris@16:           , encoding_filter<CharEncoding, Tag>());
Chris@16:     }
Chris@16: 
Chris@16:     template <typename OutputIterator, typename Container
Chris@16:       , typename CharEncoding, typename Tag>
Chris@16:     inline bool 
Chris@16:     string_generate(OutputIterator& sink
Chris@16:       , Container const& c
Chris@16:       , CharEncoding, Tag)
Chris@16:     {
Chris@16:         return string_generate(sink, c, encoding_filter<CharEncoding, Tag>());
Chris@16:     }
Chris@16: 
Chris@16:     ///////////////////////////////////////////////////////////////////////////
Chris@16:     template <typename OutputIterator, typename Char>
Chris@16:     inline bool string_generate(OutputIterator& sink
Chris@16:       , Char const* str
Chris@16:       , unused_type, unused_type)
Chris@16:     {
Chris@16:         return string_generate(sink, str, pass_through_filter());
Chris@16:     }
Chris@16: 
Chris@16:     template <typename OutputIterator, typename Char, typename Traits
Chris@16:       , typename Allocator>
Chris@16:     inline bool string_generate(OutputIterator& sink
Chris@16:       , std::basic_string<Char, Traits, Allocator> const& str
Chris@16:       , unused_type, unused_type)
Chris@16:     {
Chris@16:         return string_generate(sink, str.c_str(), pass_through_filter());
Chris@16:     }
Chris@16: 
Chris@16:     template <typename OutputIterator, typename Container>
Chris@16:     inline bool string_generate(OutputIterator& sink
Chris@16:       , Container const& c
Chris@16:       , unused_type, unused_type)
Chris@16:     {
Chris@16:         return string_generate(sink, c, pass_through_filter());
Chris@16:     }
Chris@16: 
Chris@16: }}}}
Chris@16: 
Chris@16: #endif