Get "save oar" and "save iar" to tell you in a more friendly manner if the filename to save already exists, rather than exception throwing.

Also changes ConsoleUtil.CheckFileExists to CheckFileDoesNotExist() since this is more meaningful in the context, even though it does result in double negatives.

OpenSim/Framework/Console/ConsoleUtil.cs

@@ -27,6 +27,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Reflection;
 using log4net;
@@ -60,6 +61,24 @@ namespace OpenSim.Framework.Console
     
         public const string VectorSeparator = ",";
         public static char[] VectorSeparatorChars = VectorSeparator.ToCharArray();
+
+        /// <summary>
+        /// Check if the given file path exists.
+        /// </summary>
+        /// <remarks>If not, warning is printed to the given console.</remarks>
+        /// <returns>true if the file does not exist, false otherwise.</returns>
+        /// <param name='console'></param>
+        /// <param name='path'></param>
+        public static bool CheckFileDoesNotExist(ICommandConsole console, string path)
+        {
+            if (File.Exists(path))
+            {
+                console.OutputFormat("File {0} already exists.  Please move or remove it.", path);
+                return false;
+            }
+
+            return true;
+        }
     
         /// <summary>
         /// Try to parse a console UUID from the console.

OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/InventoryArchiverModule.cs

@@ -35,6 +35,7 @@ using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Framework.Communications;
+using OpenSim.Framework.Console;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Services.Interfaces;
@@ -209,6 +210,9 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver
             Guid id, string firstName, string lastName, string invPath, string pass, string savePath,
             Dictionary<string, object> options)
         {
+            if (!ConsoleUtil.CheckFileDoesNotExist(MainConsole.Instance, savePath))
+                return false;
+
             if (m_scenes.Count > 0)
             {
                 UserAccount userInfo = GetUserInfo(firstName, lastName, pass);

OpenSim/Region/CoreModules/World/Archiver/ArchiverModule.cs

@@ -32,6 +32,8 @@ using System.Reflection;
 using log4net;
 using NDesk.Options;
 using Nini.Config;
+using OpenSim.Framework;
+using OpenSim.Framework.Console;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
 
@@ -117,7 +119,7 @@ namespace OpenSim.Region.CoreModules.World.Archiver
 //
 //            foreach (string param in mainParams)
 //                m_log.DebugFormat("GOT PARAM [{0}]", param);
-            
+
             if (mainParams.Count > 2)
             {
                 DearchiveRegion(mainParams[2], mergeOar, skipAssets, Guid.Empty);
@@ -150,14 +152,16 @@ namespace OpenSim.Region.CoreModules.World.Archiver
 
             List<string> mainParams = ops.Parse(cmdparams);
 
+            string path;
             if (mainParams.Count > 2)
-            {
+                path = mainParams[2];
-                ArchiveRegion(mainParams[2], options);
-            }
             else
-            {
+                path = DEFAULT_OAR_BACKUP_FILENAME;
-                ArchiveRegion(DEFAULT_OAR_BACKUP_FILENAME, options);
+
-            }
+            if (!ConsoleUtil.CheckFileDoesNotExist(MainConsole.Instance, path))
+                return;
+
+            ArchiveRegion(path, options);
         }
         
         public void ArchiveRegion(string savePath, Dictionary<string, object> options)

OpenSim/Region/CoreModules/World/Objects/Commands/ObjectCommandsModule.cs

@@ -485,11 +485,8 @@ namespace OpenSim.Region.CoreModules.World.Objects.Commands
 
             string fileName = string.Format("{0}.xml", objectUuid);
 
-            if (File.Exists(fileName))
+            if (!ConsoleUtil.CheckFileDoesNotExist(m_console, fileName))
-            {
-                m_console.OutputFormat("File {0} already exists.  Please move or remove it.", fileName);
                 return;
-            }
             
             using (XmlTextWriter xtw = new XmlTextWriter(fileName, Encoding.UTF8))
             {

OpenSim/Region/OptionalModules/Asset/AssetInfoModule.cs

@@ -127,6 +127,9 @@ namespace OpenSim.Region.OptionalModules.Asset
             }
             
             string fileName = rawAssetId;
+
+            if (!ConsoleUtil.CheckFileDoesNotExist(MainConsole.Instance, fileName))
+                return;
             
             using (FileStream fs = new FileStream(fileName, FileMode.CreateNew))
             {

OpenSim/Server/Handlers/Asset/AssetServerConnector.cs

@@ -141,6 +141,9 @@ namespace OpenSim.Server.Handlers.Asset
             }
             
             string fileName = rawAssetId;
+
+            if (!ConsoleUtil.CheckFileDoesNotExist(MainConsole.Instance, fileName))
+                return;
             
             using (FileStream fs = new FileStream(fileName, FileMode.CreateNew))
             {