Implements a very useful OSSL function to test a string to see

if it is a UUID. The function is osIsUUID().

Thanks SignpostMarv!

OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs

@@ -3274,5 +3274,19 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             InitLSL();
             ((LSL_Api)m_LSL_Api).DetachFromAvatar();
         }
+
+        /// <summary>
+        /// Checks if thing is a UUID.
+        /// </summary>
+        /// <param name="thing"></param>
+        /// <returns>1 if thing is a valid UUID, 0 otherwise</returns>
+        public LSL_Integer osIsUUID(string thing)
+        {
+            CheckThreatLevel(ThreatLevel.None, "osIsUUID");
+            m_host.AddScriptLPS(1);
+
+            UUID test;
+            return UUID.TryParse(thing, out test) ? 1 : 0;
+        }
     }
 }

OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs

@@ -276,5 +276,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Interfaces
 
         void osSetTerrainTexture(int level, LSL_Key texture);
         void osSetTerrainTextureHeight(int corner, double low, double high);
+
+        /// <summary>
+        /// Checks if thing is a UUID.
+        /// </summary>
+        /// <param name="thing"></param>
+        /// <returns>1 if thing is a valid UUID, 0 otherwise</returns>
+        LSL_Integer osIsUUID(string thing);
     }
 }

OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs

@@ -930,5 +930,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         {
             m_OSSL_Functions.osSetTerrainTextureHeight(corner, low, high);
         }
+
+        public LSL_Integer osIsUUID(string thing)
+        {
+            return m_OSSL_Functions.osIsUUID(thing);
+        }
     }
 }