3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Lars Gullik Bjønnes
7 * \author Jean-Marc Lasgouttes
8 * \author Jürgen Spitzmüller
11 * Full author contact details are available in file CREDITS.
19 #include "LaTeXFonts.h"
23 #include "support/debug.h"
24 #include "support/FileName.h"
25 #include "support/filetools.h"
26 #include "support/lassert.h"
27 #include "support/lstrings.h"
28 #include "support/qstring_helpers.h"
29 #include "support/Messages.h"
35 using namespace lyx::support;
40 Language const * ignore_language = 0;
41 Language const * default_language = 0;
42 Language const * latex_language = 0;
43 Language const * reset_language = 0;
46 bool Language::isPolyglossiaExclusive() const
48 return babel().empty() && !polyglossia().empty() && requires().empty();
52 bool Language::isBabelExclusive() const
54 return !babel().empty() && polyglossia().empty() && requires().empty();
58 docstring const Language::translateLayout(string const & m) const
64 lyxerr << "Warning: not translating `" << m
65 << "' because it is not pure ASCII.\n";
69 TranslationMap::const_iterator it = layoutTranslations_.find(m);
70 if (it != layoutTranslations_.end())
73 docstring t = from_ascii(m);
79 string Language::fontenc(BufferParams const & params) const
81 // Don't use LaTeX fonts, so just return the language's preferred
82 // (although this is not used with nonTeXFonts anyway).
83 if (params.useNonTeXFonts)
84 return fontenc_.front() == "ASCII" ? "T1" : fontenc_.front();
86 // Determine optimal font encoding
87 // We check whether the used rm font supports an encoding our language supports
88 LaTeXFont const & lf =
89 theLaTeXFonts().getLaTeXFont(from_ascii(params.fontsRoman()));
90 vector<string> const lfe = lf.fontencs();
91 for (auto & fe : fontenc_) {
92 // ASCII means: support all T* encodings plus OT1
94 for (auto & afe : lfe) {
95 if (afe == "OT1" || prefixIs(afe, "T"))
96 // we found a suitable one; return that.
100 // For other encodings, just check whether the font supports it
101 if (lf.hasFontenc(fe))
104 // We did not find a suitable one; just take the first in the list,
105 // the priorized one (which is "T1" for ASCII).
106 return fontenc_.front() == "ASCII" ? "T1" : fontenc_.front();
110 string Language::dateFormat(size_t i) const
112 if (i > dateformats_.size())
114 return dateformats_.at(i);
118 docstring Language::decimalSeparator() const
120 if (lyxrc.default_decimal_sep == "locale") {
121 QLocale loc = QLocale(toqstr(code()));
122 return qstring_to_ucs4(QString(loc.decimalPoint()));
124 return from_utf8(lyxrc.default_decimal_sep);
128 bool Language::readLanguage(Lexer & lex)
143 LA_POSTBABELPREAMBLE,
152 // Keep these sorted alphabetically!
153 LexerKeyword languageTags[] = {
154 { "babelname", LA_BABELNAME },
155 { "dateformats", LA_DATEFORMATS },
156 { "encoding", LA_ENCODING },
158 { "fontencoding", LA_FONTENC },
159 { "guiname", LA_GUINAME },
160 { "hasguisupport", LA_HAS_GUI_SUPPORT },
161 { "internalencoding", LA_INTERNAL_ENC },
162 { "langcode", LA_LANG_CODE },
163 { "langvariety", LA_LANG_VARIETY },
164 { "polyglossianame", LA_POLYGLOSSIANAME },
165 { "polyglossiaopts", LA_POLYGLOSSIAOPTS },
166 { "postbabelpreamble", LA_POSTBABELPREAMBLE },
167 { "prebabelpreamble", LA_PREBABELPREAMBLE },
168 { "provides", LA_PROVIDES },
169 { "quotestyle", LA_QUOTESTYLE },
170 { "requires", LA_REQUIRES },
172 {"wordwrap", LA_WORDWRAP }
176 bool finished = false;
177 lex.pushTable(languageTags);
178 // parse style section
179 while (!finished && lex.isOK() && !error) {
181 // See comment in LyXRC.cpp.
183 case Lexer::LEX_FEOF:
186 case Lexer::LEX_UNDEF: // parse error
187 lex.printError("Unknown language tag `$$Token'");
194 switch (static_cast<LanguageTags>(le)) {
195 case LA_END: // end of structure
201 case LA_POLYGLOSSIANAME:
202 lex >> polyglossia_name_;
204 case LA_POLYGLOSSIAOPTS:
205 lex >> polyglossia_opts_;
215 vector<string> const fe =
216 getVectorFromString(lex.getString(true), "|");
217 fontenc_.insert(fontenc_.end(), fe.begin(), fe.end());
220 case LA_DATEFORMATS: {
222 vector<string> const df =
223 getVectorFromString(trim(lex.getString(true), "\""), "|");
224 dateformats_.insert(dateformats_.end(), df.begin(), df.end());
230 case LA_HAS_GUI_SUPPORT:
231 lex >> has_gui_support_;
233 case LA_INTERNAL_ENC:
234 lex >> internal_enc_;
239 case LA_LANG_VARIETY:
242 case LA_POSTBABELPREAMBLE:
243 babel_postsettings_ =
244 lex.getLongString(from_ascii("EndPostBabelPreamble"));
246 case LA_PREBABELPREAMBLE:
248 lex.getLongString(from_ascii("EndPreBabelPreamble"));
265 return finished && !error;
269 bool Language::read(Lexer & lex)
276 lex.printError("No name given for language: `$$Token'.");
280 lang_ = lex.getString();
281 LYXERR(Debug::INFO, "Reading language " << lang_);
282 if (!readLanguage(lex)) {
283 LYXERR0("Error parsing language `" << lang_ << '\'');
287 encoding_ = encodings.fromLyXName(encodingStr_);
288 if (!encoding_ && !encodingStr_.empty()) {
289 encoding_ = encodings.fromLyXName("iso8859-1");
290 LYXERR0("Unknown encoding " << encodingStr_);
292 if (fontenc_.empty())
293 fontenc_.push_back("ASCII");
294 if (dateformats_.empty()) {
295 dateformats_.push_back("MMMM dd, yyyy");
296 dateformats_.push_back("MMM dd, yyyy");
297 dateformats_.push_back("M/d/yyyy");
303 void Language::readLayoutTranslations(Language::TranslationMap const & trans, bool replace)
305 for (auto const & t : trans) {
307 || layoutTranslations_.find(t.first) == layoutTranslations_.end())
308 layoutTranslations_[t.first] = t.second;
313 void Languages::read(FileName const & filename)
316 lex.setFile(filename);
317 lex.setContext("Languages::read");
321 case Lexer::LEX_FEOF:
327 if (lex.getString() != "Language") {
328 lex.printError("Unknown Language tag `$$Token'");
335 if (l.lang() == "latex") {
336 // Check if latex language was not already defined.
337 LASSERT(latex_language == 0, continue);
338 static const Language latex_lang = l;
339 latex_language = &latex_lang;
340 } else if (l.lang() == "ignore") {
341 // Check if ignore language was not already defined.
342 LASSERT(ignore_language == 0, continue);
343 static const Language ignore_lang = l;
344 ignore_language = &ignore_lang;
346 languagelist_[l.lang()] = l;
349 default_language = getLanguage("english");
350 if (!default_language) {
351 LYXERR0("Default language \"english\" not found!");
352 default_language = &(*languagelist_.begin()).second;
353 LYXERR0("Using \"" << default_language->lang() << "\" instead!");
356 // Read layout translations
357 FileName const path = libFileSearch(string(), "layouttranslations");
358 readLayoutTranslations(path);
364 bool readTranslations(Lexer & lex, Language::TranslationMap & trans)
367 if (lex.checkFor("End"))
371 string const key = lex.getString();
374 docstring const val = lex.getDocString();
384 VeryApproximateMatch,
389 Match match(string const & code, Language const & lang)
391 // we need to mimic gettext: code can be a two-letter code, which
392 // should match all variants, e.g. "de" should match "de_DE",
394 // special case for chinese:
395 // simplified => code == "zh_CN", langcode == "zh_CN"
396 // traditional => code == "zh_TW", langcode == "zh_CN"
397 string const variety = lang.variety();
398 string const langcode = variety.empty() ?
399 lang.code() : lang.code() + '_' + variety;
400 string const name = lang.lang();
401 if ((code == langcode && name != "chinese-traditional")
402 || (code == "zh_TW" && name == "chinese-traditional"))
404 if ((code.size() == 2) && (langcode.size() > 2)
405 && (code + '_' == langcode.substr(0, 3)))
406 return ApproximateMatch;
407 if (code.substr(0,2) == langcode.substr(0,2))
408 return VeryApproximateMatch;
416 Language const * Languages::getFromCode(string const & code) const
418 // 1/ exact match with any known language
419 for (auto const & l : languagelist_) {
420 if (match(code, l.second) == ExactMatch)
424 // 2/ approximate with any known language
425 for (auto const & l : languagelist_) {
426 if (match(code, l.second) == ApproximateMatch)
433 Language const * Languages::getFromCode(string const & code,
434 set<Language const *> const & tryfirst) const
436 // 1/ exact match with tryfirst list
437 for (auto const * lptr : tryfirst) {
438 if (match(code, *lptr) == ExactMatch)
442 // 2/ approximate match with tryfirst list
443 for (auto const * lptr : tryfirst) {
444 Match const m = match(code, *lptr);
445 if (m == ApproximateMatch || m == VeryApproximateMatch)
449 // 3/ stricter match in all languages
450 return getFromCode(code);
452 LYXERR0("Unknown language `" << code << "'");
457 void Languages::readLayoutTranslations(support::FileName const & filename)
460 lex.setFile(filename);
461 lex.setContext("Languages::read");
463 // 1) read all translations (exact and approximate matches) into trans
464 std::map<string, Language::TranslationMap> trans;
466 if (!lex.checkFor("Translation")) {
468 lex.printError("Unknown layout translation tag `$$Token'");
473 string const code = lex.getString();
474 bool found = getFromCode(code);
476 lex.printError("Unknown language `" + code + "'");
479 if (!readTranslations(lex, trans[code])) {
480 lex.printError("Could not read layout translations for language `"
486 // 2) merge all translations into the languages
487 // exact translations overwrite approximate ones
488 for (auto & tr : trans) {
489 for (auto & lang : languagelist_) {
490 Match const m = match(tr.first, lang.second);
493 lang.second.readLayoutTranslations(tr.second, m == ExactMatch);
500 Language const * Languages::getLanguage(string const & language) const
502 if (language == "reset")
503 return reset_language;
504 if (language == "ignore")
505 return ignore_language;
506 const_iterator it = languagelist_.find(language);
507 return it == languagelist_.end() ? reset_language : &it->second;