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diff --git a/linden/indra/newview/llurlsimstring.h b/linden/indra/newview/llurlsimstring.h
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+/**
+ * @file llsimurlstring.h
+ * @brief Handles "SLURL fragments" like Ahern/123/45 for
+ * startup processing, login screen, prefs, etc.
+ *
+ * $LicenseInfo:firstyear=2006&license=viewergpl$
+ * 
+ * Copyright (c) 2006-2007, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+#ifndef LLSIMURLSTRING_H
+#define LLSIMURLSTRING_H
+
+#include "llstring.h"
+
+class LLURLSimString
+{
+public:
+        enum { NOT_SET=0, NOT_PARSED=1, PARSE_OK=2, PARSE_FAIL=-1 };
+
+        static void setString(const LLString& url);
+                // Accepts all sorts of fragments:
+                //   secondlife://RegionName/1/2/
+                //   sl://RegionName/1/2/3/
+                //   //Ahern/123/45/
+                //   Ahern
+
+        static bool parse();
+                // Returns true if we have an URL fragment in the static instance
+                // (and it parsed correctly, which is basically always because
+                // any bare region string is a valid fragment).
+
+        static bool parse(const LLString& sim_string, std::string *region_name, S32 *x, S32 *y, S32 *z);
+                // Parse a sim string "Ahern/1/2" and return location data,
+                // doesn't affect static instance.
+
+        static std::string getURL();
+                // Get the canonical URL secondlife://RegionName/123/45/6/
+        
+        static std::string unescapeRegionName(std::string region_name);
+                // Does URL unescaping, in particular %20 -> space
+
+        LLURLSimString() : mX(128), mY(128), mZ(0), mParseState(NOT_PARSED) {}
+
+private:
+        static S32 parseGridIdx(const LLString& in_string, S32 idx0, S32* res, S32 max);
+
+public:
+        static LLURLSimString sInstance;
+        static LLString sLocationStringHome;
+        static LLString sLocationStringLast;
+
+public:
+        LLString mSimString; // "name/x/y/z"
+        LLString mSimName;
+        S32 mX,mY,mZ;
+        S32 mParseState;
+};
+
+#endif