X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ffifo_defs.h;h=ab9266d636bb3f89465ea32d3c60819b2b3d9b58;hp=f4dd7be324f5af882ace62ace931c0d592b7c1cf;hb=d6c65d287166c3105ece4a5e3f3ec7af5a5f26a3;hpb=661078ddbde3ce0f3b06e95642fbb9b5fef7dca1

diff --git a/ncurses/fifo_defs.h b/ncurses/fifo_defs.h
index f4dd7be3..ab9266d6 100644
--- a/ncurses/fifo_defs.h
+++ b/ncurses/fifo_defs.h
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc.                        *
+ * Copyright 2020 Thomas E. Dickey                                          *
+ * Copyright 1998-2012,2016 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            *
@@ -34,26 +35,52 @@
 /*
  * Common macros for lib_getch.c, lib_ungetch.c
  *
- * $Id: fifo_defs.h,v 1.2 1998/02/11 12:13:56 tom Exp $
+ * $Id: fifo_defs.h,v 1.9 2020/02/02 23:34:34 tom Exp $
  */
 
 #ifndef FIFO_DEFS_H
 #define FIFO_DEFS_H 1
 
-#define head	SP->_fifohead
-#define tail	SP->_fifotail
+#define head	sp->_fifohead
+#define tail	sp->_fifotail
 /* peek points to next uninterpreted character */
-#define peek	SP->_fifopeek
+#define peek	sp->_fifopeek
 
-#define h_inc() { head == FIFO_SIZE-1 ? head = 0 : head++; if (head == tail) head = -1, tail = 0;}
-#define h_dec() { head == 0 ?  head = FIFO_SIZE-1 : head--; if (head == tail) tail = -1;}
-#define t_inc() { tail == FIFO_SIZE-1 ? tail = 0 : tail++; if (tail == head) tail = -1;}
-#define t_dec() { tail == 0 ?  tail = FIFO_SIZE-1 : tail--; if (head == tail) fifo_clear();}
-#define p_inc() { peek == FIFO_SIZE-1 ? peek = 0 : peek++;}
+#define h_inc() { \
+	    (head >= FIFO_SIZE-1) \
+		? head = 0 \
+		: head++; \
+	    if (head == tail) \
+		head = -1, tail = 0; \
+	}
+#define h_dec() { \
+	    (head <= 0) \
+		? head = FIFO_SIZE-1 \
+		: head--; \
+	    if (head == tail) \
+		tail = -1; \
+	}
+#define t_inc() { \
+	    (tail >= FIFO_SIZE-1) \
+		? tail = 0 \
+		: tail++; \
+	    if (tail == head) \
+		tail = -1; \
+	    }
+#define t_dec() { \
+	    (tail <= 0) \
+		? tail = FIFO_SIZE-1 \
+		: tail--; \
+	    if (head == tail) \
+		fifo_clear(sp); \
+	    }
+#define p_inc() { \
+	    (peek >= FIFO_SIZE-1) \
+		? peek = 0 \
+		: peek++; \
+	    }
 
-#define cooked_key_in_fifo()	(head!=-1 && peek!=head)
-#define raw_key_in_fifo()	(head!=-1 && peek!=tail)
-
-#undef HIDE_EINTR
+#define cooked_key_in_fifo()	((head >= 0) && (peek != head))
+#define raw_key_in_fifo()	((head >= 0) && (peek != tail))
 
 #endif /* FIFO_DEFS_H */