1 /****************************************************************************
2 * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. *
3 * *
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 *
7 * without limitation the rights to use, copy, modify, merge, publish, *
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: *
11 * *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
14 * *
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. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
22 * *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
26 * authorization. *
27 ****************************************************************************/
28
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 ****************************************************************************/
34
35 #include <curses.priv.h>
36 #include <term.h> /* cur_term */
37
38 MODULE_ID("$Id: lib_tracebits.c,v 1.17 2008/08/03 16:09:26 tom Exp $")
39
40 #if SVR4_TERMIO && !defined(_POSIX_SOURCE)
41 #define _POSIX_SOURCE
42 #endif
43
44 #if HAVE_SYS_TERMIO_H
45 #include <sys/termio.h> /* needed for ISC */
46 #endif
47
48 #ifdef __EMX__
49 #include <io.h>
50 #endif
51
52 /* may be undefined if we're using termio.h */
53 #ifndef TOSTOP
54 #define TOSTOP 0
55 #endif
56
57 #ifndef IEXTEN
58 #define IEXTEN 0
59 #endif
60
61 #ifndef ONLCR
62 #define ONLCR 0
63 #endif
64
65 #ifndef OCRNL
66 #define OCRNL 0
67 #endif
68
69 #ifndef ONOCR
70 #define ONOCR 0
71 #endif
72
73 #ifndef ONLRET
74 #define ONLRET 0
75 #endif
76
77 #ifdef TRACE
78
79 typedef struct {
80 unsigned int val;
81 const char *name;
82 } BITNAMES;
83
84 static void
lookup_bits(char * buf,const BITNAMES * table,const char * label,unsigned int val)85 lookup_bits(char *buf, const BITNAMES * table, const char *label, unsigned int val)
86 {
87 const BITNAMES *sp;
88
89 (void) strcat(buf, label);
90 (void) strcat(buf, ": {");
91 for (sp = table; sp->name; sp++)
92 if (sp->val != 0
93 && (val & sp->val) == sp->val) {
94 (void) strcat(buf, sp->name);
95 (void) strcat(buf, ", ");
96 }
97 if (buf[strlen(buf) - 2] == ',')
98 buf[strlen(buf) - 2] = '\0';
99 (void) strcat(buf, "} ");
100 }
101
102 NCURSES_EXPORT(char *)
_nc_trace_ttymode(TTY * tty)103 _nc_trace_ttymode(TTY * tty)
104 /* describe the state of the terminal control bits exactly */
105 {
106 char *buf;
107
108 #ifdef TERMIOS
109 static const BITNAMES iflags[] =
110 {
111 {BRKINT, "BRKINT"},
112 {IGNBRK, "IGNBRK"},
113 {IGNPAR, "IGNPAR"},
114 {PARMRK, "PARMRK"},
115 {INPCK, "INPCK"},
116 {ISTRIP, "ISTRIP"},
117 {INLCR, "INLCR"},
118 {IGNCR, "IGNC"},
119 {ICRNL, "ICRNL"},
120 {IXON, "IXON"},
121 {IXOFF, "IXOFF"},
122 {0, NULL}
123 #define ALLIN (BRKINT|IGNBRK|IGNPAR|PARMRK|INPCK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IXOFF)
124 }, oflags[] =
125 {
126 {OPOST, "OPOST"},
127 {OFLAGS_TABS, "XTABS"},
128 {ONLCR, "ONLCR"},
129 {OCRNL, "OCRNL"},
130 {ONOCR, "ONOCR"},
131 {ONLRET, "ONLRET"},
132 {0, NULL}
133 #define ALLOUT (OPOST|OFLAGS_TABS|ONLCR|OCRNL|ONOCR|ONLRET)
134 }, cflags[] =
135 {
136 {CLOCAL, "CLOCAL"},
137 {CREAD, "CREAD"},
138 {CSTOPB, "CSTOPB"},
139 #if !defined(CS5) || !defined(CS8)
140 {CSIZE, "CSIZE"},
141 #endif
142 {HUPCL, "HUPCL"},
143 {PARENB, "PARENB"},
144 {PARODD | PARENB, "PARODD"}, /* concession to readability */
145 {0, NULL}
146 #define ALLCTRL (CLOCAL|CREAD|CSIZE|CSTOPB|HUPCL|PARENB|PARODD)
147 }, lflags[] =
148 {
149 {ECHO, "ECHO"},
150 {ECHOE | ECHO, "ECHOE"}, /* concession to readability */
151 {ECHOK | ECHO, "ECHOK"}, /* concession to readability */
152 {ECHONL, "ECHONL"},
153 {ICANON, "ICANON"},
154 {ISIG, "ISIG"},
155 {NOFLSH, "NOFLSH"},
156 {TOSTOP, "TOSTOP"},
157 {IEXTEN, "IEXTEN"},
158 {0, NULL}
159 #define ALLLOCAL (ECHO|ECHONL|ICANON|ISIG|NOFLSH|TOSTOP|IEXTEN)
160 };
161
162 buf = _nc_trace_buf(0,
163 8 + sizeof(iflags) +
164 8 + sizeof(oflags) +
165 8 + sizeof(cflags) +
166 8 + sizeof(lflags) +
167 8);
168 if (buf != 0) {
169
170 if (tty->c_iflag & ALLIN)
171 lookup_bits(buf, iflags, "iflags", tty->c_iflag);
172
173 if (tty->c_oflag & ALLOUT)
174 lookup_bits(buf, oflags, "oflags", tty->c_oflag);
175
176 if (tty->c_cflag & ALLCTRL)
177 lookup_bits(buf, cflags, "cflags", tty->c_cflag);
178
179 #if defined(CS5) && defined(CS8)
180 {
181 static struct {
182 int value;
183 const char *name;
184 } csizes[] = {
185 #define CS_DATA(name) { name, #name " " }
186 CS_DATA(CS5),
187 #ifdef CS6
188 CS_DATA(CS6),
189 #endif
190 #ifdef CS7
191 CS_DATA(CS7),
192 #endif
193 CS_DATA(CS8),
194 };
195 const char *result = "CSIZE? ";
196 int value = (tty->c_cflag & CSIZE);
197 unsigned n;
198
199 if (value != 0) {
200 for (n = 0; n < SIZEOF(csizes); n++) {
201 if (csizes[n].value == value) {
202 result = csizes[n].name;
203 break;
204 }
205 }
206 }
207 strcat(buf, result);
208 }
209 #endif
210
211 if (tty->c_lflag & ALLLOCAL)
212 lookup_bits(buf, lflags, "lflags", tty->c_lflag);
213 }
214 #else
215 /* reference: ttcompat(4M) on SunOS 4.1 */
216 #ifndef EVENP
217 #define EVENP 0
218 #endif
219 #ifndef LCASE
220 #define LCASE 0
221 #endif
222 #ifndef LLITOUT
223 #define LLITOUT 0
224 #endif
225 #ifndef ODDP
226 #define ODDP 0
227 #endif
228 #ifndef TANDEM
229 #define TANDEM 0
230 #endif
231
232 static const BITNAMES cflags[] =
233 {
234 {CBREAK, "CBREAK"},
235 {CRMOD, "CRMOD"},
236 {ECHO, "ECHO"},
237 {EVENP, "EVENP"},
238 {LCASE, "LCASE"},
239 {LLITOUT, "LLITOUT"},
240 {ODDP, "ODDP"},
241 {RAW, "RAW"},
242 {TANDEM, "TANDEM"},
243 {XTABS, "XTABS"},
244 {0, NULL}
245 #define ALLCTRL (CBREAK|CRMOD|ECHO|EVENP|LCASE|LLITOUT|ODDP|RAW|TANDEM|XTABS)
246 };
247
248 buf = _nc_trace_buf(0,
249 8 + sizeof(cflags));
250 if (buf != 0) {
251 if (tty->sg_flags & ALLCTRL) {
252 lookup_bits(buf, cflags, "cflags", tty->sg_flags);
253 }
254 }
255 #endif
256 return (buf);
257 }
258
259 NCURSES_EXPORT(char *)
_nc_tracebits(void)260 _nc_tracebits(void)
261 {
262 return _nc_trace_ttymode(&(cur_term->Nttyb));
263 }
264 #else
265 EMPTY_MODULE(_nc_tracebits)
266 #endif /* TRACE */
267