X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FLanguage.cpp;h=8f984325d8448e4c252e2a0efde5f0e8f90ba79b;hb=5bf72d6dca73410f99c270597f5faa8f7fd2c1e0;hp=6035aef3a388202e9c0946cd687d5fd163763454;hpb=f1cba8ff64b369792fd49f5ddf90e8126ab476ac;p=lyx.git

diff --git a/src/Language.cpp b/src/Language.cpp
index 6035aef3a3..8f984325d8 100644
--- a/src/Language.cpp
+++ b/src/Language.cpp
@@ -5,6 +5,7 @@
  *
  * \author Lars Gullik Bjønnes
  * \author Jean-Marc Lasgouttes
+ * \author Jürgen Spitzmüller
  * \author Dekel Tsur
  *
  * Full author contact details are available in file CREDITS.
@@ -20,6 +21,9 @@
 
 #include "support/debug.h"
 #include "support/FileName.h"
+#include "support/filetools.h"
+#include "support/lstrings.h"
+#include "support/Messages.h"
 
 using namespace std;
 using namespace lyx::support;
@@ -36,39 +40,236 @@ Language const * latex_language = &latex_lang;
 Language const * reset_language = 0;
 
 
+docstring const Language::translateLayout(string const & m) const
+{
+	if (m.empty())
+		return docstring();
+
+	if (!isAscii(m)) {
+		lyxerr << "Warning: not translating `" << m
+		       << "' because it is not pure ASCII.\n";
+		return from_utf8(m);
+	}
+
+	TranslationMap::const_iterator it = layoutTranslations_.find(m);
+	if (it != layoutTranslations_.end())
+		return it->second;
+
+	return from_ascii(m);
+}
+
+
+bool Language::readLanguage(Lexer & lex)
+{
+	enum LanguageTags {
+		LA_AS_BABELOPTS = 1,
+		LA_BABELNAME,
+		LA_ENCODING,
+		LA_END,
+		LA_GUINAME,
+		LA_INTERNAL_ENC,
+		LA_LANG_CODE,
+		LA_LANG_VARIETY,
+		LA_POLYGLOSSIANAME,
+		LA_POLYGLOSSIAOPTS,
+		LA_POSTBABELPREAMBLE,
+		LA_PREBABELPREAMBLE,
+		LA_RTL
+	};
+
+	// Keep these sorted alphabetically!
+	LexerKeyword languageTags[] = {
+		{ "asbabeloptions",       LA_AS_BABELOPTS },
+		{ "babelname",            LA_BABELNAME },
+		{ "encoding",             LA_ENCODING },
+		{ "end",                  LA_END },
+		{ "guiname",              LA_GUINAME },
+		{ "internalencoding",     LA_INTERNAL_ENC },
+		{ "langcode",             LA_LANG_CODE },
+		{ "langvariety",          LA_LANG_VARIETY },
+		{ "polyglossianame",      LA_POLYGLOSSIANAME },
+		{ "polyglossiaopts",      LA_POLYGLOSSIAOPTS },
+		{ "postbabelpreamble",    LA_POSTBABELPREAMBLE },
+		{ "prebabelpreamble",     LA_PREBABELPREAMBLE },
+		{ "rtl",                  LA_RTL }
+	};
+
+	bool error = false;
+	bool finished = false;
+	lex.pushTable(languageTags);
+	// parse style section
+	while (!finished && lex.isOK() && !error) {
+		int le = lex.lex();
+		// See comment in LyXRC.cpp.
+		switch (le) {
+		case Lexer::LEX_FEOF:
+			continue;
+
+		case Lexer::LEX_UNDEF: // parse error
+			lex.printError("Unknown language tag `$$Token'");
+			error = true;
+			continue;
+
+		default: 
+			break;
+		}
+		switch (static_cast<LanguageTags>(le)) {
+		case LA_END: // end of structure
+			finished = true;
+			break;
+		case LA_AS_BABELOPTS:
+			lex >> as_babel_options_;
+			break;
+		case LA_BABELNAME:
+			lex >> babel_;
+			break;
+		case LA_POLYGLOSSIANAME:
+			lex >> polyglossia_name_;
+			break;
+		case LA_POLYGLOSSIAOPTS:
+			lex >> polyglossia_opts_;
+			break;
+		case LA_ENCODING:
+			lex >> encodingStr_;
+			break;
+		case LA_GUINAME:
+			lex >> display_;
+			break;
+		case LA_INTERNAL_ENC:
+			lex >> internal_enc_;
+			break;
+		case LA_LANG_CODE:
+			lex >> code_;
+			break;
+		case LA_LANG_VARIETY:
+			lex >> variety_;
+			break;
+		case LA_POSTBABELPREAMBLE:
+			babel_postsettings_ =
+				lex.getLongString("EndPostBabelPreamble");
+			break;
+		case LA_PREBABELPREAMBLE:
+			babel_presettings_ =
+				lex.getLongString("EndPreBabelPreamble");
+			break;
+		case LA_RTL:
+			lex >> rightToLeft_;
+			break;
+		}
+	}
+	lex.popTable();
+	return finished && !error;
+}
+
+
 bool Language::read(Lexer & lex)
 {
+	as_babel_options_ = 0;
 	encoding_ = 0;
-	lex >> lang_;
-	lex >> babel_;
-	lex >> display_;
-	lex >> rightToLeft_;
-	lex >> encodingStr_;
-	lex >> code_;
-	lex >> latex_options_;
-	if (!lex)
+	internal_enc_ = 0;
+	rightToLeft_ = 0;
+
+	if (!lex.next()) {
+		lex.printError("No name given for language: `$$Token'.");
 		return false;
+	}
+
+	lang_ = lex.getString();
+	LYXERR(Debug::INFO, "Reading language " << lang_);
+	if (!readLanguage(lex)) {
+		LYXERR0("Error parsing language `" << lang_ << '\'');
+		return false;
+	}
 
 	encoding_ = encodings.fromLyXName(encodingStr_);
 	if (!encoding_ && !encodingStr_.empty()) {
 		encoding_ = encodings.fromLyXName("iso8859-1");
 		LYXERR0("Unknown encoding " << encodingStr_);
 	}
+	// cache translation status. Calling getMessages() directly in
+	// PrefLanguage::PrefLanguage() did only work if the gui language
+	// was set to auto (otherwise all languages would be marked as available).
+	translated_ = getMessages(code()).available();
 	return true;
 }
 
 
+namespace {
+
+bool readTranslations(Lexer & lex, Language::TranslationMap & trans)
+{
+	while (lex.isOK()) {
+		if (lex.checkFor("End"))
+			break;
+		if (!lex.next(true))
+			return false;
+		string const key = lex.getString();
+		if (!lex.next(true))
+			return false;
+		docstring const val = lex.getDocString();
+		trans[key] = val;
+	}
+	return true;
+}
+
+enum Match{NoMatch, ApproximateMatch, ExactMatch};
+
+Match match(string const & code, Language const & lang)
+{
+	// we need to mimic gettext: code can be a two-letter code, which
+	// should match all variants, e.g. "de" should match "de_DE",
+	// "de_AT" etc.
+	// special case for chinese:
+	// simplified  => code == "zh_CN", langcode == "zh_CN"
+	// traditional => code == "zh_TW", langcode == "zh_CN"
+	string const variety = lang.variety();
+	string const langcode = variety.empty() ?
+	                        lang.code() : lang.code() + '_' + variety;
+	string const name = lang.lang();
+	if ((code == langcode && name != "chinese-traditional") ||
+	    (code == "zh_TW"  && name == "chinese-traditional"))
+		return ExactMatch;
+	if ((code.size() == 2 && langcode.size() > 2 &&
+	     code + '_' == langcode.substr(0, 3)))
+		return ApproximateMatch;
+	return NoMatch;
+}
+
+}
+
+
+void Language::readLayoutTranslations(Language::TranslationMap const & trans, bool replace)
+{
+	TranslationMap::const_iterator const end = trans.end();
+	for (TranslationMap::const_iterator it = trans.begin(); it != end; ++it)
+		if (replace ||
+		    layoutTranslations_.find(it->first) == layoutTranslations_.end())
+			layoutTranslations_[it->first] = it->second;
+}
+
+
 void Languages::read(FileName const & filename)
 {
 	Lexer lex;
 	lex.setFile(filename);
 	lex.setContext("Languages::read");
-	while (1) {
+	while (lex.isOK()) {
+		int le = lex.lex();
+		switch (le) {
+		case Lexer::LEX_FEOF:
+			continue;
+
+		default:
+			break;
+		}
+		if (lex.getString() != "Language") {
+			lex.printError("Unknown Language tag `$$Token'");
+			continue;
+		}
 		Language l;
 		l.read(lex);
 		if (!lex)
 			break;
-		LYXERR(Debug::INFO, "Reading language " << l.lang());
 		if (l.lang() == "latex")
 			latex_lang = l;
 		else if (l.lang() == "ignore")
@@ -86,6 +287,65 @@ void Languages::read(FileName const & filename)
 			default_language = &(*languagelist.begin()).second;
 		LYXERR0("Using \"" << default_language->lang() << "\" instead!");
 	}
+
+	// Read layout translations
+	FileName const path = libFileSearch(string(), "layouttranslations");
+	readLayoutTranslations(path);
+}
+
+
+void Languages::readLayoutTranslations(support::FileName const & filename)
+{
+	Lexer lex;
+	lex.setFile(filename);
+	lex.setContext("Languages::read");
+
+	// 1) read all translations (exact and approximate matches) into trans
+	typedef std::map<string, Language::TranslationMap> TransMap;
+	TransMap trans;
+	LanguageList::iterator const lbeg = languagelist.begin();
+	LanguageList::iterator const lend = languagelist.end();
+	while (lex.isOK()) {
+		if (!lex.checkFor("Translation")) {
+			if (lex.isOK())
+				lex.printError("Unknown layout translation tag `$$Token'");
+			break;
+		}
+		if (!lex.next(true))
+			break;
+		string const code = lex.getString();
+		bool readit = false;
+		for (LanguageList::iterator lit = lbeg; lit != lend; ++lit) {
+			if (match(code, lit->second) != NoMatch) {
+				if (readTranslations(lex, trans[code]))
+					readit = true;
+				else
+					lex.printError("Could not read layout "
+					               "translations for language "
+					               "`" + code + "'");
+				break;
+			}
+		}
+		if (!readit) {
+			lex.printError("Unknown language `" + code + "'");
+			break;
+		}
+	}
+
+	// 2) merge all translations into the languages
+	// exact translations overwrite approximate ones
+	TransMap::const_iterator const tbeg = trans.begin();
+	TransMap::const_iterator const tend = trans.end();
+	for (TransMap::const_iterator tit = tbeg; tit != tend; ++tit) {
+		for (LanguageList::iterator lit = lbeg; lit != lend; ++lit) {
+			Match m = match(tit->first, lit->second);
+			if (m == NoMatch)
+				continue;
+			lit->second.readLayoutTranslations(tit->second,
+			                                   m == ExactMatch);
+		}
+	}
+
 }