1 /* $NetBSD: curses.c,v 1.25 2013/10/16 19:59:29 roy Exp $ */
2
3 /*
4 * Copyright (c) 1981, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #include <stdlib.h>
34 #ifndef lint
35 #if 0
36 static char sccsid[] = "@(#)curses.c 8.3 (Berkeley) 5/4/94";
37 #else
38 __RCSID("$NetBSD: curses.c,v 1.25 2013/10/16 19:59:29 roy Exp $");
39 #endif
40 #endif /* not lint */
41
42 #include "curses.h"
43 #include "curses_private.h"
44
45 /* Private. */
46 int __echoit = 1; /* If stty indicates ECHO. */
47 int __pfast;
48 int __rawmode = 0; /* If stty indicates RAW mode. */
49 int __noqch = 0;
50 /* If terminal doesn't have
51 * insert/delete line capabilities
52 * for quick change on refresh.
53 */
54 char __CA;
55
56 /*
57 * Public.
58 *
59 * XXX
60 * UPPERCASE isn't used by libcurses, and is left for backward
61 * compatibility only.
62 */
63 WINDOW *curscr; /* Current screen. */
64 WINDOW *stdscr; /* Standard screen. */
65 WINDOW *__virtscr; /* Virtual screen (for doupdate()). */
66 SCREEN *_cursesi_screen; /* the current screen we are using */
67 int COLS; /* Columns on the screen. */
68 int LINES; /* Lines on the screen. */
69 int TABSIZE; /* Size of a tab. */
70 int COLORS; /* Maximum colors on the screen */
71 int COLOR_PAIRS = 0; /* Maximum color pairs on the screen */
72 int My_term = 0; /* Use Def_term regardless. */
73 const char *Def_term = "unknown"; /* Default terminal type. */
74 char __GT; /* Gtty indicates tabs. */
75 char __NONL; /* Term can't hack LF doing a CR. */
76 char __UPPERCASE; /* Terminal is uppercase only. */
77
78 #ifdef HAVE_WCHAR
79 /*
80 * Copy the non-spacing character list (src_nsp) to the given character,
81 * allocate or free storage as required.
82 */
83 int
_cursesi_copy_nsp(nschar_t * src_nsp,struct __ldata * ch)84 _cursesi_copy_nsp(nschar_t *src_nsp, struct __ldata *ch)
85 {
86 nschar_t *np, *tnp, *pnp;
87
88 pnp = NULL;
89 np = src_nsp;
90 if (np) {
91 tnp = ch->nsp;
92 while (np) {
93 if (tnp) {
94 tnp->ch = np->ch;
95 pnp = tnp;
96 tnp = tnp->next;
97 } else {
98 tnp = (nschar_t *)malloc(sizeof(nschar_t));
99 if (!tnp)
100 return ERR;
101 tnp->ch = np->ch;
102 pnp->next = tnp;
103 tnp->next = NULL;
104 pnp = tnp;
105 tnp = NULL;
106 }
107 np = np->next;
108 }
109 np = tnp;
110 if (np) {
111 pnp->next = NULL;
112 __cursesi_free_nsp(np);
113 }
114 } else {
115 if (ch->nsp) {
116 __cursesi_free_nsp(ch->nsp);
117 ch->nsp = NULL;
118 }
119 }
120
121 return OK;
122 }
123
124 /*
125 * Free the storage associated with a non-spacing character - traverse the
126 * linked list until all storage is done.
127 */
128 void
__cursesi_free_nsp(nschar_t * inp)129 __cursesi_free_nsp(nschar_t *inp)
130 {
131 nschar_t *tnp, *np;
132
133 np = inp;
134 if (np) {
135 while (np) {
136 tnp = np->next;
137 free(np);
138 np = tnp;
139 }
140 }
141 }
142
143 /*
144 * Traverse all the cells in the given window free'ing the non-spacing
145 * character storage.
146 */
147 void
__cursesi_win_free_nsp(WINDOW * win)148 __cursesi_win_free_nsp(WINDOW *win)
149 {
150 int i, j;
151 __LDATA *sp;
152
153 for (i = 0; i < win->maxy; i++) {
154 for (sp = win->alines[i]->line, j = 0; j < win->maxx;
155 j++, sp++) {
156 __cursesi_free_nsp(sp->nsp);
157 }
158 }
159 }
160
161 #endif
162