1 /****************************************************************************
2 * Copyright 2020,2024 Thomas E. Dickey *
3 * Copyright 1998-2009,2012 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
27 * authorization. *
28 ****************************************************************************/
29
30 /****************************************************************************
31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
32 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
33 * and: Thomas E. Dickey 1996-on *
34 ****************************************************************************/
35
36 /*
37 * lib_tracechr.c - Tracing/Debugging routines
38 */
39 #include <curses.priv.h>
40
41 #include <ctype.h>
42
43 MODULE_ID("$Id: lib_tracechr.c,v 1.24 2024/02/04 00:11:35 tom Exp $")
44
45 #ifdef TRACE
46
47 #define MyBufSize sizeof(_nc_globals.tracechr_buf)
48
NCURSES_EXPORT(char *)49 NCURSES_EXPORT(char *)
50 _nc_tracechar(SCREEN *sp, int ch)
51 {
52 NCURSES_CONST char *name;
53 char *MyBuffer = ((sp != 0)
54 ? sp->tracechr_buf
55 : _nc_globals.tracechr_buf);
56
57 if ((ch > KEY_MIN && !_nc_unicode_locale()) || ch < 0) {
58 name = safe_keyname(SP_PARM, ch);
59 if (name == 0 || *name == '\0')
60 name = "NULL";
61 _nc_SPRINTF(MyBuffer, _nc_SLIMIT(MyBufSize)
62 "'%.30s' = \\x%02x", name, ch);
63 } else if (!is8bits(ch)
64 || (_nc_unicode_locale() && !is7bits(ch))
65 || !isprint(UChar(ch))) {
66 /*
67 * workaround for glibc bug:
68 * sprintf changes the result from unctrl() to an empty string if it
69 * does not correspond to a valid multibyte sequence.
70 */
71 _nc_SPRINTF(MyBuffer, _nc_SLIMIT(MyBufSize)
72 "\\x%02x", ch);
73 } else {
74 name = safe_unctrl(SP_PARM, (chtype) ch);
75 if (name == 0 || *name == 0)
76 name = "null"; /* shouldn't happen */
77 _nc_SPRINTF(MyBuffer, _nc_SLIMIT(MyBufSize)
78 "'%.30s' = \\x%02x", name, ch);
79 }
80 return (MyBuffer);
81 }
82
83 NCURSES_EXPORT(char *)
_tracechar(int ch)84 _tracechar(int ch)
85 {
86 return _nc_tracechar(CURRENT_SCREEN, ch);
87 }
88 #else
89 EMPTY_MODULE(_nc_lib_tracechr)
90 #endif
91