From e3738c2f61b4ebff97eadce88dda10c9a7610d3d Mon Sep 17 00:00:00 2001
From: Markus Mattes <markus@mmattes.de>
Date: Sat, 25 May 2019 22:41:47 +0200
Subject: Fix handling of --color and --worldlist command line arguments

They verify the provided value and error if a wrong value got provided
command line description for color was differnt on win32 but  code did not handle any differenc
extended the command line description for world and worldname that it is clear that they only start a local game if used with --go

Fixes #7875
---
 src/main.cpp | 37 ++++++++++++++++++++-----------------
 1 file changed, 20 insertions(+), 17 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index e4e47b1ac..bd83f9638 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -79,7 +79,7 @@ static void print_modified_quicktune_values();
 
 static void list_game_ids();
 static void list_worlds(bool print_name, bool print_path);
-static void setup_log_params(const Settings &cmd_args);
+static bool setup_log_params(const Settings &cmd_args);
 static bool create_userdata_path();
 static bool init_common(const Settings &cmd_args, int argc, char *argv[]);
 static void startup_message();
@@ -135,7 +135,8 @@ int main(int argc, char *argv[])
 		return 0;
 	}
 
-	setup_log_params(cmd_args);
+	if (!setup_log_params(cmd_args))
+		return 1;
 
 	porting::signal_handler_init();
 
@@ -166,8 +167,12 @@ int main(int argc, char *argv[])
 			list_worlds(true, false);
 		} else if (cmd_args.get("worldlist") == "path") {
 			list_worlds(false, true);
-		} else {
+		} else if (cmd_args.get("worldlist") == "both") {
 			list_worlds(true, true);
+		} else {
+			errorstream << "Invalid --worldlist value: "
+				<< cmd_args.get("worldlist") << std::endl;
+			return 1; 
 		}
 		return 0;
 	}
@@ -258,23 +263,17 @@ static void set_allowed_options(OptionList *allowed_options)
 	allowed_options->insert(std::make_pair("map-dir", ValueSpec(VALUETYPE_STRING,
 			_("Same as --world (deprecated)"))));
 	allowed_options->insert(std::make_pair("world", ValueSpec(VALUETYPE_STRING,
-			_("Set world path (implies local game)"))));
+			_("Set world path (implies local game if used with option --go)"))));
 	allowed_options->insert(std::make_pair("worldname", ValueSpec(VALUETYPE_STRING,
-			_("Set world by name (implies local game)"))));
+			_("Set world by name (implies local game if used with option --go)"))));
 	allowed_options->insert(std::make_pair("worldlist", ValueSpec(VALUETYPE_STRING,
-			_("Get list of worlds (implies local game) ('path' lists paths, "
+			_("Get list of worlds ('path' lists paths, "
 			"'name' lists names, 'both' lists both)"))));
 	allowed_options->insert(std::make_pair("quiet", ValueSpec(VALUETYPE_FLAG,
 			_("Print to console errors only"))));
-#if !defined(_WIN32)
 	allowed_options->insert(std::make_pair("color", ValueSpec(VALUETYPE_STRING,
 			_("Coloured logs ('always', 'never' or 'auto'), defaults to 'auto'"
 			))));
-#else
-	allowed_options->insert(std::make_pair("color", ValueSpec(VALUETYPE_STRING,
-			_("Coloured logs ('always' or 'never'), defaults to 'never'"
-			))));
-#endif
 	allowed_options->insert(std::make_pair("info", ValueSpec(VALUETYPE_FLAG,
 			_("Print more information to console"))));
 	allowed_options->insert(std::make_pair("verbose",  ValueSpec(VALUETYPE_FLAG,
@@ -398,7 +397,7 @@ static void print_modified_quicktune_values()
 	}
 }
 
-static void setup_log_params(const Settings &cmd_args)
+static bool setup_log_params(const Settings &cmd_args)
 {
 	// Quiet mode, print errors only
 	if (cmd_args.getFlag("quiet")) {
@@ -418,14 +417,16 @@ static void setup_log_params(const Settings &cmd_args)
 #endif
 	}
 	if (color_mode != "") {
-		if (color_mode == "auto")
+		if (color_mode == "auto") {
 			Logger::color_mode = LOG_COLOR_AUTO;
-		else if (color_mode == "always")
+		} else if (color_mode == "always") {
 			Logger::color_mode = LOG_COLOR_ALWAYS;
-		else if (color_mode == "never")
+		} else if (color_mode == "never") {
 			Logger::color_mode = LOG_COLOR_NEVER;
-		else
+		} else {
 			errorstream << "Invalid color mode: " << color_mode << std::endl;
+			return false;
+		}			
 	}
 
 	// If trace is enabled, enable logging of certain things
@@ -444,6 +445,8 @@ static void setup_log_params(const Settings &cmd_args)
 	// In certain cases, output verbose level on stderr
 	if (cmd_args.getFlag("verbose") || cmd_args.getFlag("trace"))
 		g_logger.addOutput(&stderr_output, LL_VERBOSE);
+
+	return true;
 }
 
 static bool create_userdata_path()
-- 
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