2 Copyright (C) 2020 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 libdcp is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
30 version. If you delete this exception statement from all source
31 files in the program, then also delete it here.
34 #ifndef LIBDCP_LANGUAGE_TAG_H
35 #define LIBDCP_LANGUAGE_TAG_H
38 #include <boost/optional.hpp>
49 std::string to_string () const;
50 std::string description () const;
56 SubtagData (std::string subtag_, std::string description_)
58 , description(description_)
62 std::string description;
64 bool operator== (SubtagData const& other) {
65 return subtag == other.subtag && description == other.description;
81 std::string subtag () const {
85 virtual SubtagType type () const = 0;
87 bool operator== (Subtag const& other) {
88 return _subtag == other._subtag;
92 Subtag (std::string subtag, SubtagType type);
98 class LanguageSubtag : public Subtag
101 LanguageSubtag (std::string subtag)
102 : Subtag(subtag, LANGUAGE) {}
103 LanguageSubtag (char const* subtag)
104 : Subtag(subtag, LANGUAGE) {}
106 SubtagType type () const {
111 class ScriptSubtag : public Subtag
114 ScriptSubtag (std::string subtag)
115 : Subtag(subtag, SCRIPT) {}
116 ScriptSubtag (char const* subtag)
117 : Subtag(subtag, SCRIPT) {}
119 SubtagType type () const {
124 class RegionSubtag : public Subtag
127 RegionSubtag (std::string subtag)
128 : Subtag(subtag, REGION) {}
129 RegionSubtag (char const* subtag)
130 : Subtag(subtag, REGION) {}
132 SubtagType type () const {
137 class VariantSubtag : public Subtag
140 VariantSubtag (std::string subtag)
141 : Subtag(subtag, VARIANT) {}
142 VariantSubtag (char const* subtag)
143 : Subtag(subtag, VARIANT) {}
145 SubtagType type () const {
149 bool operator== (VariantSubtag const& other) const;
150 bool operator< (VariantSubtag const& other) const;
154 class ExtlangSubtag : public Subtag
157 ExtlangSubtag (std::string subtag)
158 : Subtag(subtag, EXTLANG) {}
159 ExtlangSubtag (char const* subtag)
160 : Subtag(subtag, EXTLANG) {}
162 SubtagType type () const {
166 bool operator== (ExtlangSubtag const& other) const;
167 bool operator< (ExtlangSubtag const& other) const;
171 LanguageTag (std::string tag);
173 boost::optional<LanguageSubtag> language() {
177 void set_language (LanguageSubtag language);
179 boost::optional<ScriptSubtag> script() const {
183 void set_script (ScriptSubtag script);
185 boost::optional<RegionSubtag> region() const {
189 void set_region (RegionSubtag region);
191 std::vector<VariantSubtag> variants() const {
195 void set_variants (std::vector<VariantSubtag> variants);
196 void add_variant (VariantSubtag variant);
198 std::vector<ExtlangSubtag> extlangs() const {
202 void set_extlangs (std::vector<ExtlangSubtag> extlangs);
203 void add_extlang (ExtlangSubtag extlang);
205 std::vector<std::pair<SubtagType, SubtagData> > subtags () const;
207 static std::vector<SubtagData> get_all (SubtagType type);
208 static std::string subtag_type_name (SubtagType type);
210 static boost::optional<std::string> get_subtag_description (SubtagType, std::string subtag);
211 static boost::optional<SubtagData > get_subtag_data (SubtagType, std::string subtag);
214 static boost::optional<std::string> get_subtag_description (T s) {
215 return get_subtag_description (s.type(), s.subtag());
219 static boost::optional<SubtagData> get_subtag_data (T s) {
220 return get_subtag_data (s.type(), s.subtag());
225 boost::optional<LanguageSubtag> _language;
226 boost::optional<ScriptSubtag> _script;
227 boost::optional<RegionSubtag> _region;
228 std::vector<VariantSubtag> _variants;
229 std::vector<ExtlangSubtag> _extlangs;
232 extern bool operator==(dcp::LanguageTag const& a, dcp::LanguageTag const& b);
233 extern std::ostream& operator<<(std::ostream& os, dcp::LanguageTag const& tag);