From a0ef37e7bccb18a8569962fd5690f288a888b3fa Mon Sep 17 00:00:00 2001
From: Darkvater <darkvater@openttd.org>
Date: Thu, 10 Mar 2005 21:44:17 +0000
Subject: [PATCH] (svn r1986) - Fix: free _config_file when shutting down
 openttd. Strange that Valgrind didn't catch this, kudos to TrueLight -
 Feature (small): new command-line option -c <config_file>. You can have
 OpenTTD load alternative config files with this setup, handy for servers, or
 for saves from other players if you don't want to rename your own config.
 This will have to do until all game-related settings are saved ingame.
 Couldn't find the SF patch, so credits to the guy that wrote it.

---
 os2.c   |  4 +++-
 ttd.c   | 13 ++++++++++---
 unix.c  |  5 ++++-
 win32.c |  4 +++-
 4 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/os2.c b/os2.c
index 7667eb89ac..40ccd66afb 100644
--- a/os2.c
+++ b/os2.c
@@ -582,7 +582,9 @@ void DeterminePaths(void)
 	_path.scenario_dir = str_fmt("%sscenario", _path.personal_dir);
 	_path.gm_dir = str_fmt("%sgm\\", _path.game_data_dir);
 	_path.data_dir = str_fmt("%sdata\\", _path.game_data_dir);
-	_config_file = str_fmt("%sopenttd.cfg", _path.personal_dir);
+
+	if (_config_file == NULL)
+		_config_file = str_fmt("%sopenttd.cfg", _path.personal_dir);
 
 #if defined CUSTOM_LANG_DIR
 	// sets the search path for lng files to the custom one
diff --git a/ttd.c b/ttd.c
index b551b916b2..c1a4f8956f 100644
--- a/ttd.c
+++ b/ttd.c
@@ -302,7 +302,8 @@ static void showhelp(void)
 		"  -f                  = Fork into the background (dedicated only)\n"
 		#endif
 		"  -i                  = Force to use the DOS palette (use this if you see a lot of pink)\n"
-		"  -p #player          = Player as #player (deprecated) (network only)\n",
+		"  -p #player          = Player as #player (deprecated) (network only)\n"
+		"  -c config_file      = Use 'config_file' instead of 'openttd.cfg'\n",
 		lastof(buf)
 	);
 
@@ -451,6 +452,8 @@ static void UnInitializeGame(void)
 {
 	UnInitWindowSystem();
 	UnInitNewgrEngines();
+
+	free(_config_file);
 }
 
 static void LoadIntroGame(void)
@@ -509,15 +512,16 @@ int ttd_main(int argc, char* argv[])
 	_switch_mode_errorstr = INVALID_STRING_ID;
 	_dedicated_forks = false;
 	dedicated = false;
+	_config_file = NULL;
 
 	// The last param of the following function means this:
 	//   a letter means: it accepts that param (e.g.: -h)
 	//   a ':' behind it means: it need a param (e.g.: -m<driver>)
 	//   a '::' behind it means: it can optional have a param (e.g.: -d<debug>)
 	#if !defined(__MORPHOS__) && !defined(__AMIGA__) && !defined(WIN32)
-		optformat = "m:s:v:hDfn::l:eit:d::r:g::G:p:";
+		optformat = "m:s:v:hDfn::l:eit:d::r:g::G:p:c:";
 	#else
-		optformat = "m:s:v:hDn::l:eit:d::r:g::G:p:"; // no fork option
+		optformat = "m:s:v:hDn::l:eit:d::r:g::G:p:c:"; // no fork option
 	#endif
 
 	MyGetOptInit(&mgo, argc-1, argv+1, optformat);
@@ -575,6 +579,9 @@ int ttd_main(int argc, char* argv[])
 			if (IS_INT_INSIDE(i, 1, MAX_PLAYERS)) _network_playas = i;
 			break;
 		}
+		case 'c':
+			_config_file = strdup(mgo.opt);
+			break;
 		case -2:
  		case 'h':
 			showhelp();
diff --git a/unix.c b/unix.c
index 5c5b4db8ef..6ff092b643 100644
--- a/unix.c
+++ b/unix.c
@@ -515,7 +515,10 @@ void DeterminePaths(void)
 	_path.scenario_dir = str_fmt("%sscenario", _path.personal_dir);
 	_path.gm_dir = str_fmt("%sgm/", _path.game_data_dir);
 	_path.data_dir = str_fmt("%sdata/", _path.game_data_dir);
-	_config_file = str_fmt("%sopenttd.cfg", _path.personal_dir);
+
+	if (_config_file == NULL)
+		_config_file = str_fmt("%sopenttd.cfg", _path.personal_dir);
+
 	_highscore_file = str_fmt("%shs.dat", _path.personal_dir);
 	_log_file = str_fmt("%sopenttd.log", _path.personal_dir);
 
diff --git a/win32.c b/win32.c
index e9b6365191..849c66e089 100644
--- a/win32.c
+++ b/win32.c
@@ -2131,7 +2131,9 @@ void DeterminePaths(void)
 	_path.data_dir = str_fmt("%sdata\\", cfg);
 	_path.lang_dir = str_fmt("%slang\\", cfg);
 
-	_config_file = str_fmt("%sopenttd.cfg", _path.personal_dir);
+	if (_config_file == NULL)
+		_config_file = str_fmt("%sopenttd.cfg", _path.personal_dir);
+
 	_highscore_file = str_fmt("%shs.dat", _path.personal_dir);
 	_log_file = str_fmt("%sopenttd.log", _path.personal_dir);