No longer depend on SDLK_LAST statically.

Key input should now be safe even if compiled with a different version 
of SDL than the one running the program (Bug #936, possibly also #883)


git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@2659 8092fc87-c524-0410-9efc-e669fe64eaf9

sc2/ChangeLog

@@ -1,4 +1,7 @@
 Changes towards version 0.7:
+- No longer depend on SDLK_LAST statically; key input should now be safe 
+  if compiled with a different version of SDL than the one running the 
+  program (Bug #936, possibly also #883) - Michael
 - Unix build scripts now work under LC_CTYPE=tr_TR - SvdB
 - Flush write buffer when doing a uio_fclose() after doing only
   uio_fwrite() operations. - SvdB

sc2/src/sc2code/libs/input/sdl/input.c

@@ -24,6 +24,7 @@
 #include "libs/input/input_common.h"
 #include "libs/input/sdl/vcontrol.h"
 #include "libs/input/sdl/keynames.h"
+#include "misc.h"
 #include "controls.h"
 #include "libs/file.h"
 #include "libs/log.h"
@@ -35,8 +36,9 @@
 static int kbdhead=0, kbdtail=0;
 static wchar_t kbdbuf[KBDBUFSIZE];
 static wchar_t lastchar;
-static int kbdstate[SDLK_LAST + 1];
-		// +1 for tracking all yet unknown keys
+static int num_keys = 0;
+static int *kbdstate = NULL;
+		// Holds all SDL keys +1 for holding invalid values
 
 static BOOLEAN InputInitialized = FALSE;
 
@@ -191,7 +193,7 @@ initKeyConfig (void)
 static void
 resetKeyboardState (void)
 {
-	memset (kbdstate, 0, sizeof (kbdstate));
+	memset (kbdstate, 0, sizeof (int) * num_keys);
 	ImmediateInputState.menu[KEY_MENU_ANY] = 0;
 }
 
@@ -206,6 +208,9 @@ TFB_InitInput (int driver, int flags)
 	GamePaused = ExitRequested = FALSE;
 
 	SDL_EnableUNICODE(1);
+	(void)SDL_GetKeyState (&num_keys);
+	kbdstate = (int *)HMalloc (sizeof (int) * num_keys);
+	
 
 #ifdef HAVE_JOYSTICK
 	if ((SDL_InitSubSystem(SDL_INIT_JOYSTICK)) == -1)
@@ -249,6 +254,7 @@ void
 TFB_UninitInput (void)
 {
 	VControl_Uninit ();
+	HFree (kbdstate);
 }
 
 // XXX: not currently used -- character mode is always on

sc2/src/sc2code/libs/input/sdl/vcontrol.c

@@ -67,7 +67,8 @@ static joystick *joysticks;
 #endif /* HAVE_JOYSTICK */
 
 static int joycount;
-static keybinding *bindings[SDLK_LAST];
+static int num_sdl_keys = 0;
+static keybinding **bindings = NULL;
 
 static keypool *pool;
 static VControl_NameBinding *nametable;
@@ -194,7 +195,9 @@ key_init (void)
 {
 	int i;
 	pool = allocate_key_chunk ();
-	for (i = 0; i < SDLK_LAST; i++)
+	(void)SDL_GetKeyState (&num_sdl_keys);
+	bindings = (keybinding **) vctrl_malloc (sizeof (keybinding *) * num_sdl_keys);
+	for (i = 0; i < num_sdl_keys; i++)
 		bindings[i] = NULL;
 
 #ifdef HAVE_JOYSTICK
@@ -227,8 +230,9 @@ key_uninit (void)
 {
 	int i;
 	free_key_pool (pool);
-	for (i = 0; i < SDLK_LAST; i++)
+	for (i = 0; i < num_sdl_keys; i++)
 		bindings[i] = NULL;
+	vctrl_free (bindings);
 	pool = NULL;
 
 #ifdef HAVE_JOYSTICK
@@ -516,7 +520,7 @@ VControl_RemoveGestureBinding (VCONTROL_GESTURE *g, int *target)
 int
 VControl_AddKeyBinding (SDLKey symbol, int *target)
 {
-	if ((symbol < 0) || (symbol >= SDLK_LAST)) {
+	if ((symbol < 0) || (symbol >= num_sdl_keys)) {
 		log_add (log_Warning, "VControl: Illegal key index %d", symbol);
 		return -1;
 	}
@@ -527,7 +531,7 @@ VControl_AddKeyBinding (SDLKey symbol, int *target)
 void
 VControl_RemoveKeyBinding (SDLKey symbol, int *target)
 {
-	if ((symbol < 0) || (symbol >= SDLK_LAST)) {
+	if ((symbol < 0) || (symbol >= num_sdl_keys)) {
 		log_add (log_Warning, "VControl: Illegal key index %d", symbol);
 		return;
 	}
@@ -765,7 +769,7 @@ VControl_RemoveAllBindings ()
 void
 VControl_ProcessKeyDown (SDLKey symbol)
 {
-	if ((symbol < 0) || (symbol >= SDLK_LAST)) {
+	if ((symbol < 0) || (symbol >= num_sdl_keys)) {
 		log_add (log_Warning, "VControl: Got unknown key index %d", symbol);
 		return;
 	}
@@ -776,7 +780,7 @@ VControl_ProcessKeyDown (SDLKey symbol)
 void
 VControl_ProcessKeyUp (SDLKey symbol)
 {
-	if ((symbol < 0) || (symbol >= SDLK_LAST))
+	if ((symbol < 0) || (symbol >= num_sdl_keys))
 		return;
 
 	deactivate (bindings[symbol]);
@@ -1005,7 +1009,7 @@ VControl_Dump (uio_Stream *out)
 	PutResFileNewline (out);
 
 	/* Print out keyboard bindings */
-	for (i = 0; i < SDLK_LAST; i++)
+	for (i = 0; i < num_sdl_keys; i++)
 	{
 		keybinding *kb = bindings[i];		
 		if (kb != NULL)
@@ -1118,7 +1122,7 @@ VControl_NextBinding (VCONTROL_GESTURE *gesture)
 				}
 				kb = kb->next;
 			}
-			if (++iter_index == SDLK_LAST)
+			if (++iter_index == num_sdl_keys)
 			{
 				iter_device = 0;
 				iter_index = 0;