1 /* $OpenBSD: lib_inwstr.c,v 1.2 2023/10/17 09:52:09 nicm Exp $ */
2
3 /****************************************************************************
4 * Copyright 2020 Thomas E. Dickey *
5 * Copyright 2002-2016,2017 Free Software Foundation, Inc. *
6 * *
7 * Permission is hereby granted, free of charge, to any person obtaining a *
8 * copy of this software and associated documentation files (the *
9 * "Software"), to deal in the Software without restriction, including *
10 * without limitation the rights to use, copy, modify, merge, publish, *
11 * distribute, distribute with modifications, sublicense, and/or sell *
12 * copies of the Software, and to permit persons to whom the Software is *
13 * furnished to do so, subject to the following conditions: *
14 * *
15 * The above copyright notice and this permission notice shall be included *
16 * in all copies or substantial portions of the Software. *
17 * *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
25 * *
26 * Except as contained in this notice, the name(s) of the above copyright *
27 * holders shall not be used in advertising or otherwise to promote the *
28 * sale, use or other dealings in this Software without prior written *
29 * authorization. *
30 ****************************************************************************/
31
32 /****************************************************************************
33 * Author: Thomas Dickey *
34 ****************************************************************************/
35
36 /*
37 ** lib_inwstr.c
38 **
39 ** The routines winnwstr() and winwstr().
40 **
41 */
42
43 #include <curses.priv.h>
44
45 MODULE_ID("$Id: lib_inwstr.c,v 1.2 2023/10/17 09:52:09 nicm Exp $")
46
NCURSES_EXPORT(int)47 NCURSES_EXPORT(int)
48 winnwstr(WINDOW *win, wchar_t *wstr, int n)
49 {
50 int count = 0;
51 cchar_t *text;
52
53 T((T_CALLED("winnwstr(%p,%p,%d)"), (void *) win, (void *) wstr, n));
54 if (wstr != 0) {
55 if (win) {
56 int row, col;
57 int last = 0;
58 bool done = FALSE;
59
60 getyx(win, row, col);
61
62 text = win->_line[row].text;
63 while (count < n && !done && count != ERR) {
64
65 if (!isWidecExt(text[col])) {
66 int inx;
67 wchar_t wch;
68
69 for (inx = 0; (inx < CCHARW_MAX)
70 && ((wch = text[col].chars[inx]) != 0);
71 ++inx) {
72 if (count + 1 > n) {
73 done = TRUE;
74 if (last == 0) {
75 count = ERR; /* error if we store nothing */
76 } else {
77 count = last; /* only store complete chars */
78 }
79 break;
80 }
81 wstr[count++] = wch;
82 }
83 }
84 last = count;
85 if (++col > win->_maxx) {
86 break;
87 }
88 }
89 }
90 if (count > 0) {
91 wstr[count] = '\0';
92 T(("winnwstr returns %s", _nc_viswbuf(wstr)));
93 }
94 }
95 returnCode(count);
96 }
97
98 /*
99 * X/Open says winwstr() returns OK if not ERR. If that is not a blunder, it
100 * must have a null termination on the string (see above). Unlike winnstr(),
101 * it does not define what happens for a negative count with winnwstr().
102 */
103 NCURSES_EXPORT(int)
winwstr(WINDOW * win,wchar_t * wstr)104 winwstr(WINDOW *win, wchar_t *wstr)
105 {
106 int result = OK;
107
108 T((T_CALLED("winwstr(%p,%p)"), (void *) win, (void *) wstr));
109 if (win == 0) {
110 result = ERR;
111 } else if (winnwstr(win, wstr,
112 CCHARW_MAX * (win->_maxx - win->_curx + 1)) == ERR) {
113 result = ERR;
114 }
115 returnCode(result);
116 }
117