X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftinfo%2Flib_options.c;h=5cdd1d468077887f9d7130dc3f610f9dac091bb2;hp=05bd47685dd617543bd937d9f086667d24d9da7d;hb=c4d90db4f4e50bb8a971955ce4812262da4a50bc;hpb=46722468f47c2b77b3987729b4bcf2321cccfd01

diff --git a/ncurses/tinfo/lib_options.c b/ncurses/tinfo/lib_options.c
index 05bd4768..5cdd1d46 100644
--- a/ncurses/tinfo/lib_options.c
+++ b/ncurses/tinfo/lib_options.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998,1999,2000,2001,2002 Free Software Foundation, Inc.    *
+ * Copyright (c) 1998-2005,2006 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -29,6 +29,7 @@
 /****************************************************************************
  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ *     and: Thomas E. Dickey                        1996-on                 *
  ****************************************************************************/
 
 /*
@@ -42,7 +43,7 @@
 
 #include <term.h>
 
-MODULE_ID("$Id: lib_options.c,v 1.46 2002/02/02 19:40:54 tom Exp $")
+MODULE_ID("$Id: lib_options.c,v 1.50 2006/12/30 16:03:27 tom Exp $")
 
 NCURSES_EXPORT(int)
 idlok(WINDOW *win, bool flag)
@@ -72,7 +73,7 @@ halfdelay(int t)
 {
     T((T_CALLED("halfdelay(%d)"), t));
 
-    if (t < 1 || t > 255)
+    if (t < 1 || t > 255 || SP == 0)
 	returnCode(ERR);
 
     cbreak();
@@ -98,7 +99,7 @@ nodelay(WINDOW *win, bool flag)
 NCURSES_EXPORT(int)
 notimeout(WINDOW *win, bool f)
 {
-    T((T_CALLED("notimout(%p,%d)"), win, f));
+    T((T_CALLED("notimeout(%p,%d)"), win, f));
 
     if (win) {
 	win->_notimeout = f;
@@ -133,19 +134,24 @@ keypad(WINDOW *win, bool flag)
 NCURSES_EXPORT(int)
 meta(WINDOW *win GCC_UNUSED, bool flag)
 {
+    int result = ERR;
+
     /* Ok, we stay relaxed and don't signal an error if win is NULL */
     T((T_CALLED("meta(%p,%d)"), win, flag));
 
-    SP->_use_meta = flag;
-
-    if (flag && meta_on) {
-	TPUTS_TRACE("meta_on");
-	putp(meta_on);
-    } else if (!flag && meta_off) {
-	TPUTS_TRACE("meta_off");
-	putp(meta_off);
+    if (SP != 0) {
+	SP->_use_meta = flag;
+
+	if (flag && meta_on) {
+	    TPUTS_TRACE("meta_on");
+	    putp(meta_on);
+	} else if (!flag && meta_off) {
+	    TPUTS_TRACE("meta_off");
+	    putp(meta_off);
+	}
+	result = OK;
     }
-    returnCode(OK);
+    returnCode(result);
 }
 
 /* curs_set() moved here to narrow the kernel interface */
@@ -153,51 +159,56 @@ meta(WINDOW *win GCC_UNUSED, bool flag)
 NCURSES_EXPORT(int)
 curs_set(int vis)
 {
-    int cursor = SP->_cursor;
+    int result = ERR;
 
     T((T_CALLED("curs_set(%d)"), vis));
-
-    if (vis < 0 || vis > 2)
-	returnCode(ERR);
-
-    if (vis == cursor)
-	returnCode(cursor);
-
-    switch (vis) {
-    case 2:
-	if (cursor_visible) {
-	    TPUTS_TRACE("cursor_visible");
-	    putp(cursor_visible);
-	} else
-	    returnCode(ERR);
-	break;
-    case 1:
-	if (cursor_normal) {
-	    TPUTS_TRACE("cursor_normal");
-	    putp(cursor_normal);
-	} else
-	    returnCode(ERR);
-	break;
-    case 0:
-	if (cursor_invisible) {
-	    TPUTS_TRACE("cursor_invisible");
-	    putp(cursor_invisible);
-	} else
-	    returnCode(ERR);
-	break;
+    if (SP != 0 && vis >= 0 && vis <= 2) {
+	int cursor = SP->_cursor;
+
+	if (vis == cursor) {
+	    result = cursor;
+	} else {
+	    result = (cursor == -1 ? 1 : cursor);
+	    switch (vis) {
+	    case 2:
+		if (cursor_visible) {
+		    TPUTS_TRACE("cursor_visible");
+		    putp(cursor_visible);
+		} else
+		    result = ERR;
+		break;
+	    case 1:
+		if (cursor_normal) {
+		    TPUTS_TRACE("cursor_normal");
+		    putp(cursor_normal);
+		} else
+		    result = ERR;
+		break;
+	    case 0:
+		if (cursor_invisible) {
+		    TPUTS_TRACE("cursor_invisible");
+		    putp(cursor_invisible);
+		} else
+		    result = ERR;
+		break;
+	    }
+	    SP->_cursor = vis;
+	    _nc_flush();
+	}
     }
-    SP->_cursor = vis;
-    _nc_flush();
-
-    returnCode(cursor == -1 ? 1 : cursor);
+    returnCode(result);
 }
 
 NCURSES_EXPORT(int)
 typeahead(int fd)
 {
     T((T_CALLED("typeahead(%d)"), fd));
-    SP->_checkfd = fd;
-    returnCode(OK);
+    if (SP != 0) {
+	SP->_checkfd = fd;
+	returnCode(OK);
+    } else {
+	returnCode(ERR);
+    }
 }
 
 /*
@@ -209,7 +220,7 @@ typeahead(int fd)
 
 #if NCURSES_EXT_FUNCS
 static int
-has_key_internal(int keycode, struct tries *tp)
+has_key_internal(int keycode, TRIES *tp)
 {
     if (tp == 0)
 	return (FALSE);
@@ -224,7 +235,7 @@ NCURSES_EXPORT(int)
 has_key(int keycode)
 {
     T((T_CALLED("has_key(%d)"), keycode));
-    returnCode(has_key_internal(keycode, SP->_keytry));
+    returnCode(SP != 0 ? has_key_internal(keycode, SP->_keytry) : FALSE);
 }
 #endif /* NCURSES_EXT_FUNCS */
 
@@ -248,10 +259,12 @@ _nc_keypad(bool flag)
 	_nc_flush();
     }
 
-    if (flag && !SP->_tried) {
-	_nc_init_keytry();
-	SP->_tried = TRUE;
+    if (SP != 0) {
+	if (flag && !SP->_tried) {
+	    _nc_init_keytry();
+	    SP->_tried = TRUE;
+	}
+	SP->_keypad_on = flag;
     }
-    SP->_keypad_on = flag;
     return (OK);
 }