1 files changed, 92 insertions, 2 deletions
diff --git a/src/Main/Resources.cpp b/src/Main/Resources.cpp
index 52b3cd4f..d8bab977 100644
--- a/src/Main/Resources.cpp
+++ b/src/Main/Resources.cpp
@@ -16,6 +16,14 @@
 
 #ifdef TC_WINDOWS
 #include "Main/resource.h"
+#else
+#ifdef TC_MACOSX
+#include "Application.h"
+#endif
+#include "Platform/File.h"
+#include "Platform/StringConverter.h"
+#include <stdio.h>
+#include "UserPreferences.h"
 #endif
 
 namespace VeraCrypt
@@ -39,7 +47,6 @@ namespace VeraCrypt
 	}
 #endif // TC_WINDOWS
 
-
 	string Resources::GetLanguageXml ()
 	{
 #ifdef TC_WINDOWS
@@ -49,6 +56,89 @@ namespace VeraCrypt
 		strBuf.CopyFrom (res);
 		return string (reinterpret_cast <char *> (strBuf.Ptr()));
 #else
+		// get language from env LANG
+		// support:  C,POSIX,
+		// support for e.g. german: de_DE.UTF-8, de.UTF8, de_DE, de
+		// not support e.g.: de@Euro
+		string defaultLang("en");
+#if defined (TC_MACOSX)
+		string filenamePrefix = StringConverter::ToSingle (Application::GetExecutableDirectory()) + "/../Resources/languages/Language.";
+#else
+		string filenamePrefix("/usr/share/veracrypt/languages/Language.");
+#endif
+		string filenamePost(".xml");
+		string filename = filenamePrefix + defaultLang + filenamePost;
+
+		UserPreferences Preferences;
+		Preferences.Load();
+		wstring preferredLang = Preferences.Language;
+#ifdef DEBUG
+		std::cout << "Config language: " << preferredLang << std::endl;
+#endif
+
+		if (preferredLang == L"system") {
+			if (const char *env_p = getenv("LANG")) {
+				string lang(env_p);
+#ifdef DEBUG
+				std::cout << "env $LANG: " << lang << std::endl;
+#endif
+				if (lang.size() > 1) {
+					int found = lang.find(".");
+					if (found > 1) {
+						string langTag = lang.substr(0, found);
+						string lowerLangTag(StringConverter::ToLower(langTag));
+						int foundUnderscore = lowerLangTag.find("_");
+						if (foundUnderscore > 0) {
+							lowerLangTag.replace(foundUnderscore, 1, 1, '-');
+							filename = filenamePrefix + lowerLangTag + filenamePost;
+							FilesystemPath xml(filename);
+							if (!xml.IsFile()) {
+								string shortLangTag = lowerLangTag.substr(0, foundUnderscore);
+								filename = filenamePrefix + shortLangTag + filenamePost;
+								FilesystemPath xml(filename);
+								if (!xml.IsFile()) {
+									filename = filenamePrefix + defaultLang + filenamePost;
+								}
+							}
+						} else {
+							filename = filenamePrefix + langTag + filenamePost;
+							FilesystemPath xml(filename);
+							if (!xml.IsFile()) {
+								filename = filenamePrefix + defaultLang + filenamePost;
+							}
+						}
+					} else {
+						string lowerLang(StringConverter::ToLower(lang));
+						filename = filenamePrefix + lowerLang + filenamePost;
+						FilesystemPath xml(filename);
+						if (!xml.IsFile()) {
+							int foundUnderscore = lowerLang.find("_");
+							if (foundUnderscore > 0) {
+								lowerLang.replace(foundUnderscore, 1, 1, '-');
+								filename = filenamePrefix + lowerLang + filenamePost;
+								FilesystemPath xml(filename);
+								if (!xml.IsFile()) {
+									filename = filenamePrefix + defaultLang + filenamePost;
+								}
+							}
+						}
+					}
+				}
+			}
+		} else {
+			filename = filenamePrefix + preferredLang + filenamePost;
+		}
+		FilesystemPath xml(filename);
+		if ( xml.IsFile() ){
+			File file;
+			file.Open (xml, File::OpenRead, File::ShareRead);
+			vector <byte> keyfileData (file.Length());
+			BufferPtr keyfileDataBuf (&keyfileData.front(), keyfileData.size());
+			file.ReadCompleteBuffer (keyfileDataBuf);
+			file.Close();
+			string langxml(keyfileData.begin(), keyfileData.end());
+			return langxml;
+		}
 		static byte LanguageXml[] =
 		{
 #			include "Common/Language.xml.h"
@@ -111,7 +201,7 @@ namespace VeraCrypt
 		wxImage image (stream);
 		image.Resize (wxSize (16, 12), wxPoint (0, 0));
 
-#	ifdef __WXGTK__
+#	if defined  __WXGTK__ || defined TC_MACOSX
 		return wxBitmap (image.ConvertToMono (0, 0, 0), 1);
 #	else
 		return wxBitmap (image);