1 /***************************************************************************
2 * Copyright (C) 2008-2017 by Andrzej Rybczak *
3 * electricityispower@gmail.com *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
21 #ifndef NCMPCPP_REGEX_FILTER_H
22 #define NCMPCPP_REGEX_FILTER_H
26 #ifdef BOOST_REGEX_ICU
27 # include <boost/regex/icu.hpp>
29 # include <boost/regex.hpp>
30 #endif // BOOST_REGEX_ICU
38 #ifdef BOOST_REGEX_ICU
42 #endif // BOOST_REGEX_ICU
45 template <typename StringT
>
46 inline Regex
make(StringT
&&s
, boost::regex_constants::syntax_option_type flags
)
49 # ifdef BOOST_REGEX_ICU
53 # endif // BOOST_REGEX_ICU
54 (std::forward
<StringT
>(s
), flags
);
57 template <typename StringT
>
58 inline bool search(StringT
&&s
, const Regex
&rx
)
62 # ifdef BOOST_REGEX_ICU
63 boost::u32regex_search
66 # endif // BOOST_REGEX_ICU
67 (std::forward
<StringT
>(s
), rx
);
68 } catch (std::out_of_range
&e
) {
69 // Invalid UTF-8 sequence, ignore the string.
70 std::cerr
<< "Regex::search: error while processing \"" << s
<< "\": " << e
.what() << "\n";
78 typedef NC::Menu
<T
> MenuT
;
79 typedef typename
NC::Menu
<T
>::Item Item
;
80 typedef std::function
<bool(const Regex
&, const T
&)> FilterFunction
;
84 template <typename FilterT
>
85 Filter(const std::string
&constraint_
,
86 boost::regex_constants::syntax_option_type flags
,
88 : m_rx(make(constraint_
, flags
))
89 , m_constraint(constraint_
)
90 , m_filter(std::forward
<FilterT
>(filter
))
98 const std::string
&constraint() const {
102 bool operator()(const Item
&item
) const {
104 return m_filter(m_rx
, item
.value());
109 return m_filter
.operator bool();
114 std::string m_constraint
;
115 FilterFunction m_filter
;
118 template <typename T
> struct ItemFilter
120 typedef NC::Menu
<T
> MenuT
;
121 typedef typename
NC::Menu
<T
>::Item Item
;
122 typedef std::function
<bool(const Regex
&, const Item
&)> FilterFunction
;
126 template <typename FilterT
>
127 ItemFilter(const std::string
&constraint_
,
128 boost::regex_constants::syntax_option_type flags
,
130 : m_rx(make(constraint_
, flags
))
131 , m_constraint(constraint_
)
132 , m_filter(std::forward
<FilterT
>(filter
))
140 const std::string
&constraint() const {
144 bool operator()(const Item
&item
) {
145 return m_filter(m_rx
, item
);
150 return m_filter
.operator bool();
155 std::string m_constraint
;
156 FilterFunction m_filter
;
161 #endif // NCMPCPP_REGEX_FILTER_H