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1 | /* |
2 | * Copyright Andrey Semashev 2007 - 2015. | |
3 | * Distributed under the Boost Software License, Version 1.0. | |
4 | * (See accompanying file LICENSE_1_0.txt or copy at | |
5 | * http://www.boost.org/LICENSE_1_0.txt) | |
6 | */ | |
7 | /*! | |
8 | * \file formatters/xml_decorator.hpp | |
9 | * \author Andrey Semashev | |
10 | * \date 18.11.2012 | |
11 | * | |
12 | * The header contains implementation of a XML-style character decorator. | |
13 | */ | |
14 | ||
15 | #ifndef BOOST_LOG_EXPRESSIONS_FORMATTERS_XML_DECORATOR_HPP_INCLUDED_ | |
16 | #define BOOST_LOG_EXPRESSIONS_FORMATTERS_XML_DECORATOR_HPP_INCLUDED_ | |
17 | ||
18 | #include <boost/range/iterator_range_core.hpp> | |
19 | #include <boost/log/detail/config.hpp> | |
20 | #include <boost/log/expressions/formatters/char_decorator.hpp> | |
21 | #include <boost/log/detail/header.hpp> | |
22 | ||
23 | #ifdef BOOST_HAS_PRAGMA_ONCE | |
24 | #pragma once | |
25 | #endif | |
26 | ||
27 | namespace boost { | |
28 | ||
29 | BOOST_LOG_OPEN_NAMESPACE | |
30 | ||
31 | namespace expressions { | |
32 | ||
33 | namespace aux { | |
34 | ||
35 | template< typename > | |
36 | struct xml_decorator_traits; | |
37 | ||
38 | #ifdef BOOST_LOG_USE_CHAR | |
39 | template< > | |
40 | struct xml_decorator_traits< char > | |
41 | { | |
42 | static boost::iterator_range< const char* const* > get_patterns() | |
43 | { | |
44 | static const char* const patterns[] = | |
45 | { | |
46 | "&", "<", ">", "\"", "'" | |
47 | }; | |
48 | return boost::make_iterator_range(patterns); | |
49 | } | |
50 | static boost::iterator_range< const char* const* > get_replacements() | |
51 | { | |
52 | static const char* const replacements[] = | |
53 | { | |
54 | "&", "<", ">", """, "'" | |
55 | }; | |
56 | return boost::make_iterator_range(replacements); | |
57 | } | |
58 | }; | |
59 | #endif // BOOST_LOG_USE_CHAR | |
60 | ||
61 | #ifdef BOOST_LOG_USE_WCHAR_T | |
62 | template< > | |
63 | struct xml_decorator_traits< wchar_t > | |
64 | { | |
65 | static boost::iterator_range< const wchar_t* const* > get_patterns() | |
66 | { | |
67 | static const wchar_t* const patterns[] = | |
68 | { | |
69 | L"&", L"<", L">", L"\"", L"'" | |
70 | }; | |
71 | return boost::make_iterator_range(patterns); | |
72 | } | |
73 | static boost::iterator_range< const wchar_t* const* > get_replacements() | |
74 | { | |
75 | static const wchar_t* const replacements[] = | |
76 | { | |
77 | L"&", L"<", L">", L""", L"'" | |
78 | }; | |
79 | return boost::make_iterator_range(replacements); | |
80 | } | |
81 | }; | |
82 | #endif // BOOST_LOG_USE_WCHAR_T | |
83 | ||
84 | template< typename CharT > | |
85 | struct xml_decorator_gen | |
86 | { | |
87 | typedef CharT char_type; | |
88 | ||
89 | template< typename SubactorT > | |
90 | BOOST_FORCEINLINE char_decorator_actor< SubactorT, pattern_replacer< char_type > > operator[] (SubactorT const& subactor) const | |
91 | { | |
92 | typedef xml_decorator_traits< char_type > traits_type; | |
93 | typedef pattern_replacer< char_type > replacer_type; | |
94 | typedef char_decorator_actor< SubactorT, replacer_type > result_type; | |
95 | typedef typename result_type::terminal_type terminal_type; | |
96 | typename result_type::base_type act = {{ terminal_type(subactor, replacer_type(traits_type::get_patterns(), traits_type::get_replacements())) }}; | |
97 | return result_type(act); | |
98 | } | |
99 | }; | |
100 | ||
101 | } // namespace aux | |
102 | ||
103 | /*! | |
104 | * XML-style decorator generator object. The decorator replaces characters that have special meaning | |
105 | * in XML documents with the corresponding decorated counterparts. The generator provides | |
106 | * <tt>operator[]</tt> that can be used to construct the actual decorator. For example: | |
107 | * | |
108 | * <code> | |
109 | * xml_decor[ stream << attr< std::string >("MyAttr") ] | |
110 | * </code> | |
111 | * | |
112 | * For wide-character formatting there is the similar \c wxml_decor decorator generator object. | |
113 | */ | |
114 | #ifdef BOOST_LOG_USE_CHAR | |
115 | const aux::xml_decorator_gen< char > xml_decor = {}; | |
116 | #endif | |
117 | #ifdef BOOST_LOG_USE_WCHAR_T | |
118 | const aux::xml_decorator_gen< wchar_t > wxml_decor = {}; | |
119 | #endif | |
120 | ||
121 | /*! | |
122 | * The function creates an XML-style decorator generator for arbitrary character type. | |
123 | */ | |
124 | template< typename CharT > | |
125 | BOOST_FORCEINLINE aux::xml_decorator_gen< CharT > make_xml_decor() | |
126 | { | |
127 | return aux::xml_decorator_gen< CharT >(); | |
128 | } | |
129 | ||
130 | } // namespace expressions | |
131 | ||
132 | BOOST_LOG_CLOSE_NAMESPACE // namespace log | |
133 | ||
134 | } // namespace boost | |
135 | ||
136 | #include <boost/log/detail/footer.hpp> | |
137 | ||
138 | #endif // BOOST_LOG_EXPRESSIONS_FORMATTERS_XML_DECORATOR_HPP_INCLUDED_ |