From 023d530eade50a71d224870c24e52a99cd17a1cc Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Mon, 14 Nov 2011 21:40:39 +0000
Subject: [PATCH] (svn r23222) -Codechange: reduce tar scanning calls to the
 bare minimum

---
 src/ai/ai_core.cpp                  | 8 +++++++-
 src/console_cmds.cpp                | 2 --
 src/network/network_content_gui.cpp | 4 ++--
 src/newgrf_config.cpp               | 1 +
 src/newgrf_gui.cpp                  | 1 -
 src/openttd.cpp                     | 4 ++--
 6 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/src/ai/ai_core.cpp b/src/ai/ai_core.cpp
index 18eeef3b0b..0e7667ba44 100644
--- a/src/ai/ai_core.cpp
+++ b/src/ai/ai_core.cpp
@@ -17,6 +17,7 @@
 #include "../network/network.h"
 #include "../window_func.h"
 #include "../command_func.h"
+#include "../fileio_func.h"
 #include "ai_scanner.hpp"
 #include "ai_instance.hpp"
 #include "ai_config.hpp"
@@ -136,7 +137,10 @@
 	if (AI::ai_scanner != NULL) AI::Uninitialize(true);
 
 	AI::frame_counter = 0;
-	if (AI::ai_scanner == NULL) AI::ai_scanner = new AIScanner();
+	if (AI::ai_scanner == NULL) {
+		TarScanner::DoScan(TarScanner::AI);
+		AI::ai_scanner = new AIScanner();
+	}
 }
 
 /* static */ void AI::Uninitialize(bool keepConfig)
@@ -325,6 +329,8 @@ void CcAI(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 
 /* static */ void AI::Rescan()
 {
+	TarScanner::DoScan(TarScanner::AI);
+
 	AI::ai_scanner->RescanAIDir();
 	ResetConfig();
 
diff --git a/src/console_cmds.cpp b/src/console_cmds.cpp
index 043d43b0c7..85731de43a 100644
--- a/src/console_cmds.cpp
+++ b/src/console_cmds.cpp
@@ -1251,7 +1251,6 @@ DEF_CONSOLE_CMD(ConRescanAI)
 		return true;
 	}
 
-	TarScanner::DoScan(TarScanner::AI);
 	AI::Rescan();
 
 	return true;
@@ -1265,7 +1264,6 @@ DEF_CONSOLE_CMD(ConRescanNewGRF)
 		return true;
 	}
 
-	TarScanner::DoScan(TarScanner::NEWGRF);
 	ScanNewGRFFiles(NULL);
 
 	return true;
diff --git a/src/network/network_content_gui.cpp b/src/network/network_content_gui.cpp
index 782f3d52c7..5a7b0c281c 100644
--- a/src/network/network_content_gui.cpp
+++ b/src/network/network_content_gui.cpp
@@ -91,7 +91,7 @@ public:
 			switch (*iter) {
 				case CONTENT_TYPE_AI:
 				case CONTENT_TYPE_AI_LIBRARY:
-					mode |= TarScanner::AI;
+					/* AI::Rescan calls the scanner. */
 					break;
 
 				case CONTENT_TYPE_BASE_GRAPHICS:
@@ -101,7 +101,7 @@ public:
 					break;
 
 				case CONTENT_TYPE_NEWGRF:
-					mode |= TarScanner::NEWGRF;
+					/* ScanNewGRFFiles calls the scanner. */
 					break;
 
 				case CONTENT_TYPE_SCENARIO:
diff --git a/src/newgrf_config.cpp b/src/newgrf_config.cpp
index d62ab8b9b7..93190cbc9a 100644
--- a/src/newgrf_config.cpp
+++ b/src/newgrf_config.cpp
@@ -635,6 +635,7 @@ void DoScanNewGRFFiles(void *callback)
 	_modal_progress_work_mutex->BeginCritical();
 
 	ClearGRFConfigList(&_all_grfs);
+	TarScanner::DoScan(TarScanner::NEWGRF);
 
 	DEBUG(grf, 1, "Scanning for NewGRFs");
 	uint num = GRFFileScanner::DoScan();
diff --git a/src/newgrf_gui.cpp b/src/newgrf_gui.cpp
index f0a430d735..b00b705403 100644
--- a/src/newgrf_gui.cpp
+++ b/src/newgrf_gui.cpp
@@ -1172,7 +1172,6 @@ struct NewGRFWindow : public QueryStringBaseWindow, NewGRFScanCallback {
 
 			case SNGRFS_RESCAN_FILES:
 			case SNGRFS_RESCAN_FILES2:
-				TarScanner::DoScan(TarScanner::NEWGRF);
 				ScanNewGRFFiles(this);
 				break;
 		}
diff --git a/src/openttd.cpp b/src/openttd.cpp
index c82d7d823e..5033eff350 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -621,7 +621,7 @@ int ttd_main(int argc, char *argv[])
 		 * The next two functions are needed to list the graphics sets. We can't do them earlier
 		 * because then we cannot show it on the debug console as that hasn't been configured yet. */
 		DeterminePaths(argv[0]);
-		TarScanner::DoScan(TarScanner::AI | TarScanner::BASESET);
+		TarScanner::DoScan(TarScanner::BASESET);
 		BaseGraphics::FindSets();
 		BaseSounds::FindSets();
 		BaseMusic::FindSets();
@@ -636,7 +636,7 @@ int ttd_main(int argc, char *argv[])
 #endif
 
 	DeterminePaths(argv[0]);
-	TarScanner::DoScan(TarScanner::ALL);
+	TarScanner::DoScan(TarScanner::BASESET | TarScanner::SCENARIO);
 	BaseGraphics::FindSets();
 	BaseSounds::FindSets();
 	BaseMusic::FindSets();