1 /* $OpenBSD: lib_insnstr.c,v 1.2 2023/10/17 09:52:08 nicm Exp $ */
2
3 /****************************************************************************
4 * Copyright 2018-2020,2022 Thomas E. Dickey *
5 * Copyright 2004-2009,2016 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 E. Dickey *
34 ****************************************************************************/
35
36 /*
37 ** lib_insnstr.c
38 **
39 ** The routine winsnstr().
40 **
41 */
42
43 #include <curses.priv.h>
44 #include <ctype.h>
45
46 MODULE_ID("$Id: lib_insnstr.c,v 1.2 2023/10/17 09:52:08 nicm Exp $")
47
NCURSES_EXPORT(int)48 NCURSES_EXPORT(int)
49 winsnstr(WINDOW *win, const char *s, int n)
50 {
51 int code = ERR;
52 const unsigned char *str = (const unsigned char *) s;
53
54 T((T_CALLED("winsnstr(%p,%s,%d)"), (void *) win, _nc_visbufn(s, n), n));
55
56 if (win != 0 && str != 0) {
57 SCREEN *sp = _nc_screen_of(win);
58 #if USE_WIDEC_SUPPORT
59 /*
60 * If the output contains "wide" (multibyte) characters, we will not
61 * really know the width of a character until we get the last byte
62 * of the character. Since the preceding byte(s) may use more columns
63 * on the screen than the final character, it is best to route the
64 * call to the wins_nwstr() function.
65 */
66 if (sp->_screen_unicode) {
67 size_t nn = (n > 0) ? (size_t) n : strlen(s);
68 wchar_t *buffer = typeMalloc(wchar_t, nn + 1);
69 if (buffer != 0) {
70 mbstate_t state;
71 size_t n3;
72 init_mb(state);
73 n3 = mbstowcs(buffer, s, nn);
74 if (n3 != (size_t) (-1)) {
75 buffer[n3] = '\0';
76 code = wins_nwstr(win, buffer, (int) n3);
77 }
78 free(buffer);
79 }
80 }
81 if (code == ERR)
82 #endif
83 {
84 NCURSES_SIZE_T oy = win->_cury;
85 NCURSES_SIZE_T ox = win->_curx;
86 const unsigned char *cp;
87
88 for (cp = str; (n <= 0 || (cp - str) < n) && *cp; cp++) {
89 _nc_insert_ch(sp, win, (chtype) UChar(*cp));
90 }
91 win->_curx = ox;
92 win->_cury = oy;
93 _nc_synchook(win);
94 code = OK;
95 }
96 }
97 returnCode(code);
98 }
99