1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 1997 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 /*LINTLIBRARY*/
41
42 #include <sys/types.h>
43 #include "curses_inc.h"
44 #include <ctype.h>
45
46 /* Insert a character at (curx, cury). */
47
48 int
winsch(WINDOW * win,chtype c)49 winsch(WINDOW *win, chtype c)
50 {
51 short curx = win->_curx;
52 int n, cury = win->_cury;
53 chtype *wcp, a;
54 int rv;
55
56 a = _ATTR(c);
57 c &= A_CHARTEXT;
58
59 rv = OK;
60 win->_insmode = TRUE;
61 if (_scrmax > 1 && (rv = _mbvalid(win)) == ERR)
62 goto done;
63 /* take care of multi-byte characters */
64 if (_mbtrue && ISMBIT(c)) {
65 rv = _mbaddch(win, A_NORMAL, RBYTE(c));
66 goto done;
67 }
68 win->_nbyte = -1;
69 curx = win->_curx;
70
71 /* let waddch() worry about these */
72 if (c == '\r' || c == '\b')
73 return (waddch(win, c));
74
75 /* with \n, in contrast to waddch, we don't clear-to-eol */
76 if (c == '\n') {
77 if (cury >= (win->_maxy-1) || cury == win->_bmarg)
78 return (wscrl(win, 1));
79 else {
80 win->_cury++;
81 win->_curx = 0;
82 return (OK);
83 }
84 }
85
86 /* with tabs or control characters, we have to do more */
87 if (c == '\t') {
88 n = (TABSIZE - (curx % TABSIZE));
89 if ((curx + n) >= win->_maxx)
90 n = win->_maxx - curx;
91 c = ' ';
92 } else {
93 if (iscntrl((int) c) != 0) {
94 if (curx >= win->_maxx-1)
95 return (ERR);
96 n = 2;
97 } else
98 n = 1;
99 }
100
101 /* shift right */
102 wcp = win->_y[cury] + curx;
103 if ((rv = _mbinsshift(win, n)) == ERR)
104 goto done;
105
106 /* insert new control character */
107 if (c < ' ' || c == _CTRL('?')) {
108 *wcp++ = '^' | win->_attrs | a;
109 *wcp = _UNCTRL(c) | win->_attrs | a;
110 } else {
111 /* normal characters */
112 c = _WCHAR(win, c) | a;
113 for (; n > 0; --n)
114 *wcp++ = c;
115 }
116
117 done:
118 if (curx < win->_firstch[cury])
119 win->_firstch[cury] = curx;
120 win->_lastch[cury] = win->_maxx-1;
121
122 win->_flags |= _WINCHANGED;
123
124 if (win->_sync)
125 wsyncup(win);
126
127 return ((rv == OK && win->_immed) ? wrefresh(win) : rv);
128 }
129