ArgumentParser cleanup

src/GitVersionExe.Tests/ArgumentParserTests.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using GitVersion;
 using NUnit.Framework;
 using Shouldly;
@@ -66,7 +65,7 @@ public void Exec()
         [Test]
         public void Exec_with_args()
         {
-            var arguments = argumentParser.ParseArguments(new List<string>
+            var arguments = argumentParser.ParseArguments(new []
             {
                 "-exec",
                 "rake",
@@ -87,7 +86,7 @@ public void Msbuild()
         [Test]
         public void Msbuild_with_args()
         {
-            var arguments = argumentParser.ParseArguments(new List<string>
+            var arguments = argumentParser.ParseArguments(new []
             {
                 "-proj",
                 "msbuild.proj",

src/GitVersionExe/ArgumentParser.cs

@@ -13,41 +13,18 @@ namespace GitVersion
 {
     public class ArgumentParser : IArgumentParser
     {
-        public Arguments ParseArguments()
-        {
-            var argumentsWithoutExeName = GetArgumentsWithoutExeName();
-
-            Arguments arguments = null;
-            try
-            {
-                arguments = ParseArguments(argumentsWithoutExeName);
-            }
-            catch (Exception exception)
-            {
-                Console.WriteLine("Failed to parse arguments: {0}", string.Join(" ", argumentsWithoutExeName));
-                if (!string.IsNullOrWhiteSpace(exception.Message))
-                {
-                    Console.WriteLine(exception.Message);
-                }
-
-                return arguments;
-            }
-
-            return arguments;
-        }
-
         public Arguments ParseArguments(string commandLineArguments)
         {
             var arguments = commandLineArguments
                 .Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
-                .ToList();
+                .ToArray();
 
             return ParseArguments(arguments);
         }
 
-        public Arguments ParseArguments(List<string> commandLineArguments)
+        public Arguments ParseArguments(string[] commandLineArguments)
         {
-            if (commandLineArguments.Count == 0)
+            if (commandLineArguments.Length == 0)
             {
                 return new Arguments
                 {
@@ -75,6 +52,7 @@ public Arguments ParseArguments(List<string> commandLineArguments)
             }
 
             var arguments = new Arguments();
+
             var switchesAndValues = CollectSwitchesAndValuesFromArguments(commandLineArguments, out var firstArgumentIsSwitch);
 
             for (var i = 0; i < switchesAndValues.AllKeys.Length; i++)
@@ -189,6 +167,7 @@ public Arguments ParseArguments(List<string> commandLineArguments)
                     {
                         arguments.Diag = true;
                     }
+
                     continue;
                 }
 
@@ -267,6 +246,7 @@ public Arguments ParseArguments(List<string> commandLineArguments)
                     {
                         arguments.ShowConfig = true;
                     }
+
                     continue;
                 }
 
@@ -312,6 +292,7 @@ public Arguments ParseArguments(List<string> commandLineArguments)
                     {
                         throw new WarningException("Can't specify multiple assembly info files when using /ensureassemblyinfo switch, either use a single assembly info file or do not specify /ensureassemblyinfo and create assembly info files manually");
                     }
+
                     continue;
                 }
 
@@ -370,6 +351,7 @@ public Arguments ParseArguments(List<string> commandLineArguments)
                     {
                         throw new WarningException($"Could not parse Verbosity value '{value}'");
                     }
+
                     continue;
                 }
 
@@ -416,15 +398,15 @@ public Arguments ParseArguments(List<string> commandLineArguments)
             return arguments;
         }
 
-        private void EnsureArgumentValueCount(string[] values, int maxArguments = 1)
+        private static void EnsureArgumentValueCount(string[] values, int maxArguments = 1)
         {
             if (values != null && values.Length > maxArguments)
             {
                 throw new WarningException($"Could not parse command line parameter '{values[1]}'.");
             }
         }
 
-        private NameValueCollection CollectSwitchesAndValuesFromArguments(IList<string> namedArguments, out bool firstArgumentIsSwitch)
+        private static NameValueCollection CollectSwitchesAndValuesFromArguments(IList<string> namedArguments, out bool firstArgumentIsSwitch)
         {
             firstArgumentIsSwitch = true;
             var switchesAndValues = new NameValueCollection();
@@ -446,7 +428,7 @@ private NameValueCollection CollectSwitchesAndValuesFromArguments(IList<string>
                 else if (currentKey != null)
                 {
                     // And if the current switch does not have a value yet and the value is not itself a switch, set its value to this argument.
-                    if (String.IsNullOrEmpty(switchesAndValues[currentKey]))
+                    if (string.IsNullOrEmpty(switchesAndValues[currentKey]))
                     {
                         switchesAndValues[currentKey] = arg;
                     }
@@ -467,12 +449,5 @@ private NameValueCollection CollectSwitchesAndValuesFromArguments(IList<string>
 
             return switchesAndValues;
         }
-
-        private static List<string> GetArgumentsWithoutExeName()
-        {
-            return Environment.GetCommandLineArgs()
-                .Skip(1)
-                .ToList();
-        }
     }
 }

src/GitVersionExe/IArgumentParser.cs

@@ -1,10 +1,8 @@
-using System.Collections.Generic;
-
 namespace GitVersion
 {
     public interface IArgumentParser
     {
         Arguments ParseArguments(string commandLineArguments);
-        Arguments ParseArguments(List<string> commandLineArguments);
+        Arguments ParseArguments(string[] commandLineArguments);
     }
-}
+}

src/GitVersionExe/Program.cs

@@ -3,22 +3,23 @@
 using GitVersion.Common;
 using GitVersion.Configuration;
 using GitVersion.Logging;
+using Console = System.Console;
 using Environment = GitVersion.Common.Environment;
 
 namespace GitVersion
 {
     class Program
     {
-        static void Main()
+        static void Main(string[] args)
         {
             var fileSystem = new FileSystem();
             var environment = new Environment();
             var argumentParser = new ArgumentParser();
-            var arguments = argumentParser.ParseArguments();
 
             int exitCode;
-            if (arguments != null)
+            try
             {
+                var arguments = argumentParser.ParseArguments(args);
                 var log = new Log
                 {
                     Verbosity = arguments.Verbosity
@@ -32,8 +33,9 @@ static void Main()
 
                 exitCode = app.Run(arguments);
             }
-            else
+            catch (Exception exception)
             {
+                Console.Error.WriteLine(exception.Message);
                 exitCode = 1;
             }
 

src/GitVersionTask/GitVersionTasks.cs

@@ -18,9 +18,9 @@ namespace GitVersionTask
 {
     public static class GitVersionTasks
     {
-        private static ILog log;
-        private static IEnvironment environment;
-        private static IFileSystem fileSystem;
+        private static readonly ILog log;
+        private static readonly IEnvironment environment;
+        private static readonly IFileSystem fileSystem;
 
         static GitVersionTasks()
         {