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 #include "compose.hpp"
36 #include "dcp_assert.h"
37 #include "exceptions.h"
38 #include "language_tag.h"
39 #include <boost/algorithm/string.hpp>
40 #include <boost/foreach.hpp>
46 using boost::optional;
50 #include "language_tag_lists.cc"
54 optional<LanguageTag::SubtagData>
55 find_in_list (LanguageTag::SubtagData* list, int length, string subtag)
57 for (int i = 0; i < length; ++i) {
58 if (list[i].subtag == subtag) {
63 return optional<LanguageTag::SubtagData>();
68 optional<LanguageTag::SubtagData>
69 find_in_list (LanguageTag::SubtagType type, string subtag)
72 case dcp::LanguageTag::LANGUAGE:
73 return find_in_list(language_list, sizeof(language_list) / sizeof(LanguageTag::SubtagData), subtag);
74 case dcp::LanguageTag::SCRIPT:
75 return find_in_list(script_list, sizeof(script_list) / sizeof(LanguageTag::SubtagData), subtag);
76 case dcp::LanguageTag::REGION:
77 return find_in_list(region_list, sizeof(region_list) / sizeof(LanguageTag::SubtagData), subtag);
78 case dcp::LanguageTag::VARIANT:
79 return find_in_list(variant_list, sizeof(variant_list) / sizeof(LanguageTag::SubtagData), subtag);
80 case dcp::LanguageTag::EXTLANG:
81 return find_in_list(extlang_list, sizeof(extlang_list) / sizeof(LanguageTag::SubtagData), subtag);
84 return optional<LanguageTag::SubtagData>();
88 LanguageTag::Subtag::Subtag (string subtag, SubtagType type)
91 if (!find_in_list(type, subtag)) {
92 throw LanguageTagError(String::compose("Unknown %1 string %2", subtag_type_name(type), subtag));
97 LanguageTag::LanguageTag (string tag)
100 boost::split (parts, tag, boost::is_any_of("-"));
102 throw LanguageTagError (String::compose("Could not parse language tag %1", tag));
105 vector<string>::size_type p = 0;
106 _language = LanguageSubtag (parts[p]);
109 if (p == parts.size()) {
114 _script = ScriptSubtag (parts[p]);
118 if (p == parts.size()) {
123 _region = RegionSubtag (parts[p]);
127 if (p == parts.size()) {
133 _variants.push_back (VariantSubtag(parts[p]));
135 if (p == parts.size()) {
143 _extlangs.push_back (ExtlangSubtag(parts[p]));
145 if (p == parts.size()) {
151 if (p < parts.size()) {
152 throw LanguageTagError (String::compose("Unrecognised subtag %1", parts[p]));
158 LanguageTag::to_string () const
161 throw LanguageTagError("No language set up");
164 string s = _language->subtag();
167 s += "-" + _script->subtag();
171 s += "-" + _region->subtag();
174 BOOST_FOREACH (VariantSubtag i, _variants) {
175 s += "-" + i.subtag();
178 BOOST_FOREACH (ExtlangSubtag i, _extlangs) {
179 s += "-" + i.subtag();
187 LanguageTag::set_language (LanguageSubtag language)
189 _language = language;
194 LanguageTag::set_script (ScriptSubtag script)
201 LanguageTag::set_region (RegionSubtag region)
208 LanguageTag::add_variant (VariantSubtag variant)
210 if (find(_variants.begin(), _variants.end(), variant) != _variants.end()) {
211 throw LanguageTagError (String::compose("Duplicate Variant subtag %1", variant.subtag()));
214 _variants.push_back (variant);
220 check_for_duplicates (vector<T> const& subtags, dcp::LanguageTag::SubtagType type)
222 vector<T> sorted = subtags;
223 sort (sorted.begin(), sorted.end());
225 BOOST_FOREACH (T const& i, sorted) {
226 if (last && i == *last) {
227 throw LanguageTagError (String::compose("Duplicate %1 subtag %2", dcp::LanguageTag::subtag_type_name(type), i.subtag()));
235 LanguageTag::set_variants (vector<VariantSubtag> variants)
237 check_for_duplicates (variants, VARIANT);
238 _variants = variants;
243 LanguageTag::add_extlang (ExtlangSubtag extlang)
245 if (find(_extlangs.begin(), _extlangs.end(), extlang) != _extlangs.end()) {
246 throw LanguageTagError (String::compose("Duplicate Extlang subtag %1", extlang.subtag()));
249 _extlangs.push_back (extlang);
254 LanguageTag::set_extlangs (vector<ExtlangSubtag> extlangs)
256 check_for_duplicates (extlangs, EXTLANG);
257 _extlangs = extlangs;
262 LanguageTag::description () const
265 throw LanguageTagError("No language set up");
270 BOOST_FOREACH (VariantSubtag const& i, _variants) {
271 optional<SubtagData> variant = find_in_list (VARIANT, i.subtag());
272 DCP_ASSERT (variant);
273 d += variant->description + " dialect of ";
276 optional<SubtagData> language = find_in_list (LANGUAGE, _language->subtag());
277 DCP_ASSERT (language);
278 d += language->description;
281 optional<SubtagData> script = find_in_list (SCRIPT, _script->subtag());
283 d += " written using the " + script->description + " script";
287 optional<SubtagData> region = find_in_list (REGION, _region->subtag());
289 d += " for " + region->description;
292 BOOST_FOREACH (ExtlangSubtag const& i, _extlangs) {
293 optional<SubtagData> extlang = find_in_list (EXTLANG, i.subtag());
294 DCP_ASSERT (extlang);
295 d += ", " + extlang->description;
302 vector<LanguageTag::SubtagData>
303 LanguageTag::get_all (SubtagType type)
305 vector<LanguageTag::SubtagData> all;
309 for (size_t i = 0; i < sizeof(language_list) / sizeof(LanguageTag::SubtagData); ++i) {
310 all.push_back (language_list[i]);
314 for (size_t i = 0; i < sizeof(script_list) / sizeof(LanguageTag::SubtagData); ++i) {
315 all.push_back (script_list[i]);
319 for (size_t i = 0; i < sizeof(region_list) / sizeof(LanguageTag::SubtagData); ++i) {
320 all.push_back (region_list[i]);
324 for (size_t i = 0; i < sizeof(variant_list) / sizeof(LanguageTag::SubtagData); ++i) {
325 all.push_back (variant_list[i]);
329 for (size_t i = 0; i < sizeof(extlang_list) / sizeof(LanguageTag::SubtagData); ++i) {
330 all.push_back (extlang_list[i]);
340 LanguageTag::subtag_type_name (SubtagType type)
359 dcp::LanguageTag::VariantSubtag::operator== (VariantSubtag const & other) const
361 return subtag() == other.subtag();
366 dcp::LanguageTag::VariantSubtag::operator< (VariantSubtag const & other) const
368 return subtag() < other.subtag();
373 dcp::LanguageTag::ExtlangSubtag::operator== (ExtlangSubtag const & other) const
375 return subtag() == other.subtag();
380 dcp::LanguageTag::ExtlangSubtag::operator< (ExtlangSubtag const & other) const
382 return subtag() < other.subtag();