/****************************************************************************
- * Copyright (c) 1998-2011,2012 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2012,2013 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 *
#include <curses.priv.h>
-MODULE_ID("$Id: lib_getch.c,v 1.124 2012/01/21 19:21:29 KO.Myung-Hun Exp $")
+MODULE_ID("$Id: lib_getch.c,v 1.126 2013/02/16 18:30:37 tom Exp $")
#include <fifo_defs.h>
static NCURSES_INLINE int
fifo_peek(SCREEN *sp)
{
- int ch = sp->_fifo[peek];
+ int ch = (peek >= 0) ? sp->_fifo[peek] : ERR;
TR(TRACE_IEVENT, ("peeking at %d", peek));
p_inc();
static NCURSES_INLINE int
fifo_pull(SCREEN *sp)
{
- int ch;
- ch = sp->_fifo[head];
+ int ch = (head >= 0) ? sp->_fifo[head] : ERR;
+
TR(TRACE_IEVENT, ("pulling %s from %d", _nc_tracechar(sp, ch), head));
if (peek == head) {
h_inc();
peek = head;
- } else
+ } else {
h_inc();
+ }
#ifdef TRACE
if (USE_TRACEF(TRACE_IEVENT)) {
int mask = 0;
(void) mask;
- if (tail == -1)
+ if (tail < 0)
return ERR;
#ifdef HIDE_EINTR
/* ungetch in reverse order */
#ifdef NCURSES_WGETCH_EVENTS
rc = recur_wgetnstr(win, buf);
- if (rc != KEY_EVENT)
+ if (rc != KEY_EVENT && rc != ERR)
safe_ungetch(sp, '\n');
#else
- (void) recur_wgetnstr(win, buf);
- safe_ungetch(sp, '\n');
+ if (recur_wgetnstr(win, buf) != ERR)
+ safe_ungetch(sp, '\n');
#endif
for (bufp = buf + strlen(buf); bufp > buf; bufp--)
safe_ungetch(sp, bufp[-1]);
if (ptr->value != 0) { /* sequence terminated */
TR(TRACE_IEVENT, ("end of sequence"));
- if (peek == tail)
+ if (peek == tail) {
fifo_clear(sp);
- else
+ } else {
head = peek;
+ }
return (ptr->value);
}