1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 1997 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
28*0Sstevel@tonic-gate /* All Rights Reserved */
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate /*
31*0Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988
32*0Sstevel@tonic-gate * The Regents of the University of California
33*0Sstevel@tonic-gate * All Rights Reserved
34*0Sstevel@tonic-gate *
35*0Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from
36*0Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its
37*0Sstevel@tonic-gate * contributors.
38*0Sstevel@tonic-gate */
39*0Sstevel@tonic-gate
40*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
41*0Sstevel@tonic-gate
42*0Sstevel@tonic-gate /*LINTLIBRARY*/
43*0Sstevel@tonic-gate
44*0Sstevel@tonic-gate /*
45*0Sstevel@tonic-gate * Routines to deal with setting and resetting modes in the tty driver.
46*0Sstevel@tonic-gate * See also setupterm.c in the termlib part.
47*0Sstevel@tonic-gate */
48*0Sstevel@tonic-gate #include <sys/types.h>
49*0Sstevel@tonic-gate #include "curses_inc.h"
50*0Sstevel@tonic-gate
51*0Sstevel@tonic-gate int
cbreak(void)52*0Sstevel@tonic-gate cbreak(void)
53*0Sstevel@tonic-gate {
54*0Sstevel@tonic-gate /*
55*0Sstevel@tonic-gate * This optimization is here because till SVR3.1 curses did not come up
56*0Sstevel@tonic-gate * in cbreak mode and now it does. Therefore, most programs when they
57*0Sstevel@tonic-gate * call cbreak won't pay for it since we'll know we're in the right
58*0Sstevel@tonic-gate * mode.
59*0Sstevel@tonic-gate */
60*0Sstevel@tonic-gate
61*0Sstevel@tonic-gate if (cur_term->_fl_rawmode != 1) {
62*0Sstevel@tonic-gate #ifdef SYSV
63*0Sstevel@tonic-gate /*
64*0Sstevel@tonic-gate * You might ask why ICRNL has anything to do with cbreak.
65*0Sstevel@tonic-gate * The problem is that there are function keys that send
66*0Sstevel@tonic-gate * a carriage return (some hp's). Curses cannot virtualize
67*0Sstevel@tonic-gate * these function keys if CR is being mapped to a NL. Sooo,
68*0Sstevel@tonic-gate * when we start a program up we unmap those but if you are
69*0Sstevel@tonic-gate * in nocbreak then we map them back. The reason for that is that
70*0Sstevel@tonic-gate * if a getch or getstr is done and you are in nocbreak the tty
71*0Sstevel@tonic-gate * driver won't return until it sees a new line and since we've
72*0Sstevel@tonic-gate * turned it off any program that has nl() and nocbreak() would
73*0Sstevel@tonic-gate * force the user to type a NL. The problem with the function keys
74*0Sstevel@tonic-gate * only gets solved if you are in cbreak mode which is OK
75*0Sstevel@tonic-gate * since program taking action on a function key is probably
76*0Sstevel@tonic-gate * in cbreak because who would expect someone to press a function
77*0Sstevel@tonic-gate * key and then return ?????
78*0Sstevel@tonic-gate */
79*0Sstevel@tonic-gate
80*0Sstevel@tonic-gate PROGTTYS.c_iflag &= ~ICRNL;
81*0Sstevel@tonic-gate PROGTTYS.c_lflag &= ~ICANON;
82*0Sstevel@tonic-gate PROGTTYS.c_cc[VMIN] = 1;
83*0Sstevel@tonic-gate PROGTTYS.c_cc[VTIME] = 0;
84*0Sstevel@tonic-gate #else
85*0Sstevel@tonic-gate PROGTTY.sg_flags |= (CBREAK | CRMOD);
86*0Sstevel@tonic-gate #endif
87*0Sstevel@tonic-gate
88*0Sstevel@tonic-gate #ifdef DEBUG
89*0Sstevel@tonic-gate #ifdef SYSV
90*0Sstevel@tonic-gate if (outf)
91*0Sstevel@tonic-gate fprintf(outf, "cbreak(), file %x, flags %x\n",
92*0Sstevel@tonic-gate cur_term->Filedes, PROGTTYS.c_lflag);
93*0Sstevel@tonic-gate #else
94*0Sstevel@tonic-gate if (outf)
95*0Sstevel@tonic-gate fprintf(outf, "cbreak(), file %x, flags %x\n",
96*0Sstevel@tonic-gate cur_term->Filedes, PROGTTY.sg_flags);
97*0Sstevel@tonic-gate #endif
98*0Sstevel@tonic-gate #endif
99*0Sstevel@tonic-gate cur_term->_fl_rawmode = 1;
100*0Sstevel@tonic-gate cur_term->_delay = -1;
101*0Sstevel@tonic-gate (void) reset_prog_mode();
102*0Sstevel@tonic-gate #ifdef FIONREAD
103*0Sstevel@tonic-gate cur_term->timeout = 0;
104*0Sstevel@tonic-gate #endif /* FIONREAD */
105*0Sstevel@tonic-gate }
106*0Sstevel@tonic-gate return (OK);
107*0Sstevel@tonic-gate }
108