Fix #387: Add foreground colors and prefixes to Write-* command output

src/PowerShellEditorServices/Properties/AssemblyInfo.cs

@@ -5,5 +5,6 @@
 
 using System.Runtime.CompilerServices;
 
+[assembly: InternalsVisibleTo("Microsoft.PowerShell.EditorServices.Test")]
 [assembly: InternalsVisibleTo("Microsoft.PowerShell.EditorServices.Test.Shared")]
 

src/PowerShellEditorServices/Session/SessionPSHostUserInterface.cs

@@ -30,6 +30,14 @@ internal class ConsoleServicePSHostUserInterface : PSHostUserInterface, IHostUIS
 
         #endregion
 
+        #region Public Constants
+
+        public const string DebugMessagePrefix = "DEBUG: ";
+        public const string WarningMessagePrefix = "WARNING: ";
+        public const string VerboseMessagePrefix = "VERBOSE: ";
+
+        #endregion
+
         #region Properties
 
         internal IConsoleHost ConsoleHost
@@ -57,9 +65,9 @@ public ConsoleServicePSHostUserInterface(bool enableConsoleRepl)
         {
             if (enableConsoleRepl)
             {
-                // Set the output encoding to Unicode so that all
-                // Unicode characters are written correctly
-                System.Console.OutputEncoding = System.Text.Encoding.Unicode;
+                // Set the output encoding to UTF-8 so that special
+                // characters are written to the console correctly
+                System.Console.OutputEncoding = System.Text.Encoding.UTF8;
             }
 
             this.rawUserInterface =
@@ -338,9 +346,10 @@ public override void WriteDebugLine(string message)
             if (this.consoleHost != null)
             {
                 this.consoleHost.WriteOutput(
-                    message,
+                    DebugMessagePrefix + message,
                     true,
-                    OutputType.Debug);
+                    OutputType.Debug,
+                    foregroundColor: ConsoleColor.Yellow);
             }
         }
 
@@ -349,9 +358,10 @@ public override void WriteVerboseLine(string message)
             if (this.consoleHost != null)
             {
                 this.consoleHost.WriteOutput(
-                    message,
+                    VerboseMessagePrefix + message,
                     true,
-                    OutputType.Verbose);
+                    OutputType.Verbose,
+                    foregroundColor: ConsoleColor.Blue);
             }
         }
 
@@ -360,9 +370,10 @@ public override void WriteWarningLine(string message)
             if (this.consoleHost != null)
             {
                 this.consoleHost.WriteOutput(
-                    message,
+                    WarningMessagePrefix + message,
                     true,
-                    OutputType.Warning);
+                    OutputType.Warning,
+                    foregroundColor: ConsoleColor.Yellow);
             }
         }
 

test/PowerShellEditorServices.Test/Console/ConsoleServiceTests.cs

@@ -119,7 +119,7 @@ await this.powerShellContext.ExecuteScriptString(
                     TestOutputString));
 
             Assert.Equal(
-                TestOutputString + Environment.NewLine,
+                ConsoleServicePSHostUserInterface.VerboseMessagePrefix + TestOutputString + Environment.NewLine,
                 this.GetOutputForType(OutputType.Verbose));
         }
 
@@ -137,7 +137,7 @@ await this.powerShellContext.ExecuteScriptString(
                     TestOutputString));
 
             Assert.Equal(
-                TestOutputString + Environment.NewLine,
+                ConsoleServicePSHostUserInterface.DebugMessagePrefix + TestOutputString + Environment.NewLine,
                 this.GetOutputForType(OutputType.Debug));
         }
 
@@ -150,7 +150,7 @@ await this.powerShellContext.ExecuteScriptString(
                     TestOutputString));
 
             Assert.Equal(
-                TestOutputString + Environment.NewLine,
+                ConsoleServicePSHostUserInterface.WarningMessagePrefix + TestOutputString + Environment.NewLine,
                 this.GetOutputForType(OutputType.Warning));
         }