/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2007,2008 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 *
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996-on *
****************************************************************************/
/*
#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 1.10 2008/05/03 20:20:58 tom Exp $")
#include <fifo_defs.h>
#ifdef TRACE
-void _nc_fifo_dump(void)
+NCURSES_EXPORT(void)
+_nc_fifo_dump(SCREEN *sp)
{
-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)
+_nc_ungetch(SCREEN *sp, int ch)
{
- if (tail == -1)
- return ERR;
+ int rc = ERR;
+
+ if (tail != -1) {
if (head == -1) {
- head = 0;
- t_inc()
- peek = tail; /* no raw keys */
+ head = 0;
+ t_inc();
+ peek = tail; /* no raw keys */
} else
- h_dec();
+ h_dec();
- SP->_fifo[head] = ch;
- T(("ungetch %#x ok", ch));
+ sp->_fifo[head] = ch;
+ T(("ungetch %s ok", _tracechar(ch)));
#ifdef TRACE
- if (_nc_tracing & TRACE_IEVENT) _nc_fifo_dump();
+ if (USE_TRACEF(TRACE_IEVENT)) {
+ _nc_fifo_dump(sp);
+ _nc_unlock_global(tracef);
+ }
#endif
- return OK;
+ rc = OK;
+ }
+ return rc;
+}
+
+NCURSES_EXPORT(int)
+ungetch(int ch)
+{
+ T((T_CALLED("ungetch(%s)"), _tracechar(ch)));
+ returnCode(_nc_ungetch(SP, ch));
}