Resolve Concelier/Excititor merge conflicts

Mongo2Go-4.1.0/src/Mongo2Go/Helper/MongodArguments.cs

@@ -0,0 +1,74 @@
+using System;
+using System.Collections.Generic;
+
+namespace Mongo2Go.Helper
+{
+    public static class MongodArguments
+    {
+        private const string ArgumentSeparator = "--";
+        private const string Space = " ";
+
+        /// <summary>
+        /// Returns the <paramref name="additionalMongodArguments" /> if it is verified that it does not contain any mongod argument already defined by Mongo2Go.
+        /// </summary>
+        /// <param name="existingMongodArguments">mongod arguments defined by Mongo2Go</param>
+        /// <param name="additionalMongodArguments">Additional mongod arguments</param>
+        /// <exception cref="T:System.ArgumentException"><paramref name="additionalMongodArguments" /> contains at least one mongod argument already defined by Mongo2Go</exception>
+        /// <returns>A string with the additional mongod arguments</returns>
+        public static string GetValidAdditionalArguments(string existingMongodArguments, string additionalMongodArguments)
+        {
+            if (string.IsNullOrWhiteSpace(additionalMongodArguments))
+            {
+                return string.Empty;
+            }
+
+            var existingMongodArgumentArray = existingMongodArguments.Trim().Split(new[] { ArgumentSeparator }, StringSplitOptions.RemoveEmptyEntries);
+
+            var existingMongodArgumentOptions = new List<string>();
+            for (var i = 0; i < existingMongodArgumentArray.Length; i++)
+            {
+                var argumentOptionSplit = existingMongodArgumentArray[i].Split(' ');
+
+                if (argumentOptionSplit.Length == 0
+                    || string.IsNullOrWhiteSpace(argumentOptionSplit[0].Trim()))
+                {
+                    continue;
+                }
+
+                existingMongodArgumentOptions.Add(argumentOptionSplit[0].Trim());
+            }
+
+            var additionalMongodArgumentArray = additionalMongodArguments.Trim().Split(new[] { ArgumentSeparator }, StringSplitOptions.RemoveEmptyEntries);
+
+            var validAdditionalMongodArguments = new List<string>();
+            var duplicateMongodArguments = new List<string>();
+            for (var i = 0; i < additionalMongodArgumentArray.Length; i++)
+            {
+                var additionalArgument = additionalMongodArgumentArray[i].Trim();
+                var argumentOptionSplit = additionalArgument.Split(' ');
+
+                if (argumentOptionSplit.Length == 0
+                    || string.IsNullOrWhiteSpace(argumentOptionSplit[0].Trim()))
+                {
+                    continue;
+                }
+
+                if (existingMongodArgumentOptions.Contains(argumentOptionSplit[0].Trim()))
+                {
+                    duplicateMongodArguments.Add(argumentOptionSplit[0].Trim());
+                }
+
+                validAdditionalMongodArguments.Add(ArgumentSeparator + additionalArgument);
+            }
+
+            if (duplicateMongodArguments.Count != 0)
+            {
+                throw new ArgumentException($"mongod arguments defined by Mongo2Go ({string.Join(", ", existingMongodArgumentOptions)}) cannot be overriden. Please remove the following additional argument(s): {string.Join(", ", duplicateMongodArguments)}.");
+            }
+
+            return validAdditionalMongodArguments.Count == 0
+                ? string.Empty
+                : Space + string.Join(" ", validAdditionalMongodArguments);
+        }
+    }
+}