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 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