Feature: 'error_exit_code' flag;

README.md

@@ -237,6 +237,7 @@ You can use several servers (as many as you want), but if you don't need to dupl
 
 - Command output is shown as "message"
 - If "logfile" exists, "message" does not contain actual message, but contains path to log
+- To catch errors using non-zero exit code, use "error_exit_code"
 - To catch errors in output, use "error_regex"
 - To convert message to short "result", use "result_regex" (also, you can set "result_right_to_left" to "true" if you need to catch last match instead of first)
 - If application which you call can't write to stdout and support only external log files, you can enable "is_external_log" (optional) and provide log path to app and "log_file". When execution is done, log file will be processed as usual
@@ -250,6 +251,7 @@ You can use several servers (as many as you want), but if you don't need to dupl
 			"args": "arguments",
 			"work_dir": "work_directory",
 			"error_regex": "regex_to_catch_errors",
+			"error_exit_code": "true",
 			"log_file": "path_to_logfile",
 			"is_external_log": "false"
 		}

Server/Commands/RunCommand.cs

@@ -63,11 +63,14 @@ public class RunCommand:ICommand, IAbortableCommand {
 				if (_isAborted) {
 					throw new CommandAbortedException();
 				}
-				var errorRegex = args.Get("error_regex");
-				var resultRegex = args.Get("result_regex");
-				var checkResultValue = !string.IsNullOrEmpty(resultRegex);
-				var isRightToLeft = args.Get("result_right_to_left");
+				var errorRegex         = args.Get("error_regex");
+				var errorExitCode      = args.GetBoolean("error_exit_code", false);
+				var resultRegex        = args.Get("result_regex");
+				var checkResultValue   = !string.IsNullOrEmpty(resultRegex);
+				var isRightToLeft      = args.Get("result_right_to_left");
 				var isRightToLeftValue = !string.IsNullOrEmpty(isRightToLeft) && bool.Parse(isRightToLeft);
+				var messageToCheck     = string.Empty;
+				var messageToShow      = string.Empty;
 				if (!string.IsNullOrEmpty(logFile)) {
 					var msg = $"Log saved to {logFile}.";
 					string logContent = null;
@@ -88,14 +91,18 @@ public class RunCommand:ICommand, IAbortableCommand {
 							}
 						}
 					} while (!isDone);
-					var result = GetResultMessage(resultRegex, logContent, isRightToLeftValue);
-					return CheckCommandResult(errorRegex, logContent, msg, checkResultValue, result);
+					messageToCheck = logContent;
+					messageToShow  = msg;
 				} else {
-					_inMemoryLog = _inMemoryLog.TrimEnd('\n');
-					var msg = _inMemoryLog;
-					var result = GetResultMessage(resultRegex, msg, isRightToLeftValue);
-					return CheckCommandResult(errorRegex, msg, msg, checkResultValue, result);
+					_inMemoryLog   = _inMemoryLog.TrimEnd('\n');
+					messageToCheck = _inMemoryLog;
+					messageToShow  = _inMemoryLog;
 				}
+				var result = GetResultMessage(resultRegex, messageToCheck, isRightToLeftValue);
+				if ( errorExitCode ) {
+					return CheckCommandResultViaExitCode(process, messageToShow, result);
+				}
+				return CheckCommandResult(errorRegex, messageToCheck, messageToShow, checkResultValue, result);
 			}
 			catch (Exception e) {
 				if (e is CommandAbortedException) {
@@ -160,6 +167,14 @@ public class RunCommand:ICommand, IAbortableCommand {
 			return false;
 		}
 
+		CommandResult CheckCommandResultViaExitCode(Process process, string messageToShow, string result) {
+			_logger.LogDebug($"Process exit code: {process.ExitCode}");
+			if ( process.ExitCode != 0 ) {
+				return CommandResult.Fail($"(exit code: {process.ExitCode}) {messageToShow}");
+			}
+			return CommandResult.Success(messageToShow, result);
+		}
+
 		CommandResult CheckCommandResult(string errorRegex, string messageToCheck, string messageToShow, bool checkResultValue, string result) {
 			return
 				ContainsError(errorRegex, messageToCheck) || (checkResultValue && string.IsNullOrEmpty(result)) ?

Server/Server.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
-    <Version>0.28.55.0</Version>
+    <Version>0.29.56.0</Version>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="2.0.0" />