ncurses 5.3

[ncurses.git] / ncurses / base / lib_ungetch.c

diff --git a/ncurses/base/lib_ungetch.c b/ncurses/base/lib_ungetch.c
index 5fdfb47d490f0e9c7c21d34751e0fac56fa303a9..a6164df5edc1c48c2f4246afdba8f67cbe83cd16 100644 (file)
--- a/ncurses/base/lib_ungetch.c
+++ b/ncurses/base/lib_ungetch.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc.                        *
+ * Copyright (c) 1998-2001,2002 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            *
@@ -40,35 +40,40 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_ungetch.c,v 1.2 1998/02/11 12:13:56 tom Exp $")
+MODULE_ID("$Id: lib_ungetch.c,v 1.8 2002/08/24 22:08:48 tom Exp $")
 
 #include <fifo_defs.h>
 
 #ifdef TRACE
-void _nc_fifo_dump(void)
+NCURSES_EXPORT(void)
+_nc_fifo_dump(void)
 {
-int i;
-       T(("head = %d, tail = %d, peek = %d", head, tail, peek));
-       for (i = 0; i < 10; i++)
-               T(("char %d = %s", i, _trace_key(SP->_fifo[i])));
+    int i;
+    T(("head = %d, tail = %d, peek = %d", head, tail, peek));
+    for (i = 0; i < 10; i++)
+       T(("char %d = %s", i, _tracechar(SP->_fifo[i])));
 }
 #endif /* TRACE */
 
-int ungetch(int ch)
+NCURSES_EXPORT(int)
+ungetch(int ch)
 {
-       if (tail == -1)
-               return ERR;
-       if (head == -1) {
-               head = 0;
-               t_inc()
-               peek = tail; /* no raw keys */
-       } else
-               h_dec();
+    T((T_CALLED("ungetch(%s)"), _tracechar(ch)));
 
-       SP->_fifo[head] = ch;
-       T(("ungetch %#x ok", ch));
+    if (tail == -1)
+       returnCode(ERR);
+    if (head == -1) {
+       head = 0;
+       t_inc()
+           peek = tail;        /* no raw keys */
+    } else
+       h_dec();
+
+    SP->_fifo[head] = ch;
+    T(("ungetch %s ok", _tracechar(ch)));
 #ifdef TRACE
-       if (_nc_tracing & TRACE_IEVENT) _nc_fifo_dump();
+    if (_nc_tracing & TRACE_IEVENT)
+       _nc_fifo_dump();
 #endif
-       return OK;
+    returnCode(OK);
 }