1 /****************************************************************************
2 * Copyright (c) 1998-2009,2012 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
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8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Thomas E. Dickey 1996-on *
33 ****************************************************************************/
36 * lib_tracechr.c - Tracing/Debugging routines
38 #include <curses.priv.h>
42 MODULE_ID("$Id: lib_tracechr.c,v 1.22 2012/02/22 22:40:24 tom Exp $")
46 #define MyBufSize sizeof(_nc_globals.tracechr_buf)
48 NCURSES_EXPORT(char *)
49 _nc_tracechar(SCREEN *sp, int ch)
51 NCURSES_CONST char *name;
52 char *MyBuffer = ((sp != 0)
54 : _nc_globals.tracechr_buf);
56 if (ch > KEY_MIN || ch < 0) {
57 name = safe_keyname(SP_PARM, ch);
58 if (name == 0 || *name == '\0')
60 _nc_SPRINTF(MyBuffer, _nc_SLIMIT(MyBufSize)
61 "'%.30s' = %#03o", name, ch);
62 } else if (!is8bits(ch) || !isprint(UChar(ch))) {
64 * workaround for glibc bug:
65 * sprintf changes the result from unctrl() to an empty string if it
66 * does not correspond to a valid multibyte sequence.
68 _nc_SPRINTF(MyBuffer, _nc_SLIMIT(MyBufSize)
71 name = safe_unctrl(SP_PARM, (chtype) ch);
72 if (name == 0 || *name == 0)
73 name = "null"; /* shouldn't happen */
74 _nc_SPRINTF(MyBuffer, _nc_SLIMIT(MyBufSize)
75 "'%.30s' = %#03o", name, ch);
80 NCURSES_EXPORT(char *)
83 return _nc_tracechar(CURRENT_SCREEN, ch);
86 EMPTY_MODULE(_nc_lib_tracechr)