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.
35 /** @file src/language_tag.cc
36 * @brief LanguageTag class
40 #ifndef LIBDCP_LANGUAGE_TAG_H
41 #define LIBDCP_LANGUAGE_TAG_H
44 #include <boost/filesystem.hpp>
45 #include <boost/optional.hpp>
56 std::string to_string () const;
57 std::string description () const;
63 SubtagData (std::string subtag_, std::string description_)
65 , description(description_)
69 std::string description;
71 bool operator== (SubtagData const& other) {
72 return subtag == other.subtag && description == other.description;
90 std::string subtag () const {
94 virtual SubtagType type () const = 0;
96 bool operator== (Subtag const& other) {
97 return _subtag == other._subtag;
101 Subtag (std::string subtag, SubtagType type);
107 class LanguageSubtag : public Subtag
110 LanguageSubtag (std::string subtag)
111 : Subtag(subtag, SubtagType::LANGUAGE) {}
112 LanguageSubtag (char const* subtag)
113 : Subtag(subtag, SubtagType::LANGUAGE) {}
115 SubtagType type () const {
116 return SubtagType::LANGUAGE;
120 class ScriptSubtag : public Subtag
123 ScriptSubtag (std::string subtag)
124 : Subtag(subtag, SubtagType::SCRIPT) {}
125 ScriptSubtag (char const* subtag)
126 : Subtag(subtag, SubtagType::SCRIPT) {}
128 SubtagType type () const {
129 return SubtagType::SCRIPT;
133 class RegionSubtag : public Subtag
136 RegionSubtag (std::string subtag)
137 : Subtag(subtag, SubtagType::REGION) {}
138 RegionSubtag (char const* subtag)
139 : Subtag(subtag, SubtagType::REGION) {}
141 SubtagType type () const {
142 return SubtagType::REGION;
146 class VariantSubtag : public Subtag
149 VariantSubtag (std::string subtag)
150 : Subtag(subtag, SubtagType::VARIANT) {}
151 VariantSubtag (char const* subtag)
152 : Subtag(subtag, SubtagType::VARIANT) {}
154 SubtagType type () const {
155 return SubtagType::VARIANT;
158 bool operator== (VariantSubtag const& other) const;
159 bool operator< (VariantSubtag const& other) const;
163 class ExtlangSubtag : public Subtag
166 ExtlangSubtag (std::string subtag)
167 : Subtag(subtag, SubtagType::EXTLANG) {}
168 ExtlangSubtag (char const* subtag)
169 : Subtag(subtag, SubtagType::EXTLANG) {}
171 SubtagType type () const {
172 return SubtagType::EXTLANG;
175 bool operator== (ExtlangSubtag const& other) const;
176 bool operator< (ExtlangSubtag const& other) const;
180 explicit LanguageTag (std::string tag);
182 boost::optional<LanguageSubtag> language() const {
186 void set_language (LanguageSubtag language);
188 boost::optional<ScriptSubtag> script() const {
192 void set_script (ScriptSubtag script);
194 boost::optional<RegionSubtag> region() const {
198 void set_region (RegionSubtag region);
200 std::vector<VariantSubtag> variants() const {
204 void set_variants (std::vector<VariantSubtag> variants);
205 void add_variant (VariantSubtag variant);
207 std::vector<ExtlangSubtag> extlangs() const {
211 void set_extlangs (std::vector<ExtlangSubtag> extlangs);
212 void add_extlang (ExtlangSubtag extlang);
214 std::vector<std::pair<SubtagType, SubtagData>> subtags () const;
216 static std::vector<SubtagData> const& get_all (SubtagType type);
217 static std::string subtag_type_name (SubtagType type);
219 static boost::optional<std::string> get_subtag_description (SubtagType, std::string subtag);
220 static boost::optional<SubtagData> get_subtag_data (SubtagType, std::string subtag);
223 static boost::optional<std::string> get_subtag_description (T s) {
224 return get_subtag_description (s.type(), s.subtag());
228 static boost::optional<SubtagData> get_subtag_data (T s) {
229 return get_subtag_data (s.type(), s.subtag());
234 boost::optional<LanguageSubtag> _language;
235 boost::optional<ScriptSubtag> _script;
236 boost::optional<RegionSubtag> _region;
237 std::vector<VariantSubtag> _variants;
238 std::vector<ExtlangSubtag> _extlangs;
242 extern bool operator==(dcp::LanguageTag const& a, dcp::LanguageTag const& b);
243 extern std::ostream& operator<<(std::ostream& os, dcp::LanguageTag const& tag);
246 extern void load_language_tag_lists (boost::filesystem::path tags_directory);