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diff --git a/indra/llui/lltrans.h b/indra/llui/lltrans.h
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+/**
+ * @file lltrans.h
+ * @brief LLTrans definition
+ *
+ * $LicenseInfo:firstyear=2000&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_TRANS_H
+#define LL_TRANS_H
+
+#include <map>
+
+#include "llpointer.h"
+#include "llstring.h"
+
+class LLXMLNode;
+
+class LLSD;
+
+/**
+ * @brief String template loaded from strings.xml
+ */
+class LLTransTemplate
+{
+public:
+	LLTransTemplate(const std::string& name = LLStringUtil::null, const std::string& text = LLStringUtil::null) : mName(name), mText(text) {}
+
+	std::string mName;
+	std::string mText;
+};
+
+/**
+ * @brief Localized strings class
+ * This class is used to retrieve translations of strings used to build larger ones, as well as
+ * strings with a general usage that don't belong to any specific floater. For example,
+ * "Owner:", "Retrieving..." used in the place of a not yet known name, etc.
+ */
+class LLTrans
+{
+public:
+	LLTrans();
+
+	/**
+	 * @brief Parses the xml root that holds the strings. Used once on startup
+// *FIXME	 * @param xml_filename Filename to parse
+	 * @param default_args Set of strings (expected to be in the file) to use as default replacement args, e.g. "SECOND_LIFE"
+	 * @returns true if the file was parsed successfully, true if something went wrong
+	 */
+	static bool parseStrings(LLPointer<LLXMLNode> & root, const std::set<std::string>& default_args);
+
+	static bool parseLanguageStrings(LLPointer<LLXMLNode> & root);
+
+	/**
+	 * @brief Returns a translated string
+	 * @param xml_desc String's description
+	 * @param args A list of substrings to replace in the string
+	 * @returns Translated string
+	 */
+	static std::string getString(const std::string &xml_desc, const LLStringUtil::format_map_t& args);
+	static std::string getString(const std::string &xml_desc, const LLSD& args);
+	static bool findString(std::string &result, const std::string &xml_desc, const LLStringUtil::format_map_t& args);
+	static bool findString(std::string &result, const std::string &xml_desc, const LLSD& args);
+
+	// Returns translated string with [COUNT] replaced with a number, following
+	// special per-language logic for plural nouns.  For example, some languages
+	// may have different plurals for 0, 1, 2 and > 2.
+	// See "AgeWeeksA", "AgeWeeksB", etc. in strings.xml for examples.
+	static std::string getCountString(const std::string& language, const std::string& xml_desc, S32 count);
+
+	/**
+	 * @brief Returns a translated string
+	 * @param xml_desc String's description
+	 * @returns Translated string
+	 */
+	static std::string getString(const std::string &xml_desc)
+	{
+		LLStringUtil::format_map_t empty;
+		return getString(xml_desc, empty);
+	}
+
+	static bool findString(std::string &result, const std::string &xml_desc)
+	{
+		LLStringUtil::format_map_t empty;
+		return findString(result, xml_desc, empty);
+	}
+
+	static std::string getKeyboardString(const char* keystring)
+	{
+		std::string key_str(keystring);
+		std::string trans_str;
+		return findString(trans_str, key_str) ? trans_str : key_str; 
+	}
+
+	// get the default args
+	static const LLStringUtil::format_map_t& getDefaultArgs()
+	{
+		return sDefaultArgs;
+	}
+
+	static void setDefaultArg(const std::string& name, const std::string& value);
+
+	// insert default args into an arg list
+	static void getArgs(LLStringUtil::format_map_t& args)
+	{
+		args.insert(sDefaultArgs.begin(), sDefaultArgs.end());
+	}
+	
+private:
+	typedef std::map<std::string, LLTransTemplate > template_map_t;
+	static template_map_t sStringTemplates;
+	static LLStringUtil::format_map_t sDefaultArgs;
+};
+
+#endif