insstr.c revision 1.12
1 /* $NetBSD: insstr.c,v 1.12 2024/12/23 02:58:03 blymn Exp $ */ 2 3 /* 4 * Copyright (c) 2005 The NetBSD Foundation Inc. 5 * All rights reserved. 6 * 7 * This code is derived from code donated to the NetBSD Foundation 8 * by Ruibiao Qiu <ruibiao (at) arl.wustl.edu,ruibiao (at) gmail.com>. 9 * 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 24 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 25 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 #ifndef lint 39 __RCSID("$NetBSD: insstr.c,v 1.12 2024/12/23 02:58:03 blymn Exp $"); 40 #endif /* not lint */ 41 42 #include <string.h> 43 #include <stdlib.h> 44 45 #include "curses.h" 46 #include "curses_private.h" 47 48 #ifndef _CURSES_USE_MACROS 49 50 /* 51 * insstr -- 52 * insert a multi-byte character string into the current window 53 */ 54 int 55 insstr(const char *str) 56 { 57 58 return winsstr(stdscr, str); 59 } 60 61 /* 62 * insnstr -- 63 * insert a multi-byte character string into the current window 64 * with at most n characters 65 */ 66 int 67 insnstr(const char *str, int n) 68 { 69 70 return winsnstr(stdscr, str, n); 71 } 72 73 /* 74 * mvinsstr -- 75 * Do an insert-string on the line at (y, x). 76 */ 77 int 78 mvinsstr(int y, int x, const char *str) 79 { 80 81 return mvwinsstr(stdscr, y, x, str); 82 } 83 84 /* 85 * mvinsnstr -- 86 * Do an insert-n-string on the line at (y, x). 87 */ 88 int 89 mvinsnstr(int y, int x, const char *str, int n) 90 { 91 92 return mvwinsnstr(stdscr, y, x, str, n); 93 } 94 95 /* 96 * mvwinsstr -- 97 * Do an insert-string on the line at (y, x) in the given window. 98 */ 99 int 100 mvwinsstr(WINDOW *win, int y, int x, const char *str) 101 { 102 103 if (wmove(win, y, x) == ERR) 104 return ERR; 105 106 return winsstr(win, str); 107 } 108 109 /* 110 * mvwinsnstr -- 111 * Do an insert-n-string on the line at (y, x) in the given window. 112 */ 113 int 114 mvwinsnstr(WINDOW *win, int y, int x, const char *str, int n) 115 { 116 117 if (wmove(win, y, x) == ERR) 118 return ERR; 119 120 return winsnstr(win, str, n); 121 } 122 123 #endif 124 125 /* 126 * winsstr -- 127 * Do an insert-string on the line, leaving (cury, curx) unchanged. 128 * No wrapping. 129 */ 130 int 131 winsstr(WINDOW *win, const char *str) 132 { 133 134 return winsnstr(win, str, -1); 135 } 136 137 /* 138 * winsnstr -- 139 * Do an insert-n-string on the line, leaving (cury, curx) unchanged. 140 * Performs wrapping. 141 */ 142 int 143 winsnstr(WINDOW *win, const char *str, int n) 144 { 145 __LDATA *end, *temp1, *temp2; 146 const char *scp; 147 int len, x; 148 __LINE *lnp; 149 #ifdef HAVE_WCHAR 150 nschar_t *np, *tnp; 151 #endif /* HAVE_WCHAR */ 152 153 if (__predict_false(win == NULL)) 154 return ERR; 155 156 /* find string length */ 157 if (n > 0) 158 for (scp = str, len = 0; n-- && *scp++; ++len); 159 else 160 for (scp = str, len = 0; *scp++; ++len); 161 __CTRACE(__CTRACE_INPUT, "winsnstr: len = %d\n", len); 162 163 /* move string */ 164 end = &win->alines[win->cury]->line[win->curx]; 165 if (len < win->maxx - win->curx) { 166 __CTRACE(__CTRACE_INPUT, "winsnstr: shift %d cells\n", len); 167 temp1 = &win->alines[win->cury]->line[win->maxx - 1]; 168 temp2 = temp1 - len; 169 while (temp2 >= end) { 170 #ifdef HAVE_WCHAR 171 np = temp1->nsp; 172 if (np){ 173 while (np) { 174 tnp = np->next; 175 free(np); 176 np = tnp; 177 } 178 temp1->nsp = NULL; 179 } 180 #endif /* HAVE_WCHAR */ 181 (void)memcpy(temp1, temp2, sizeof(__LDATA)); 182 temp1--, temp2--; 183 } 184 } 185 186 for (scp = str, temp1 = end, x = win->curx; 187 *scp && x < len + win->curx && x < win->maxx; 188 scp++, temp1++, x++) 189 { 190 temp1->ch = (wchar_t)*scp & __CHARTEXT; 191 temp1->attr = win->wattr; 192 temp1->cflags &= ~CA_BACKGROUND; 193 temp1->cflags &= ~CA_CONTINUATION; 194 #ifdef HAVE_WCHAR 195 temp1->wcols = 1; 196 #endif /* HAVE_WCHAR */ 197 } 198 #ifdef DEBUG 199 { 200 int i; 201 202 for (i = win->curx; i < win->curx + len; i++) { 203 __CTRACE(__CTRACE_INPUT, 204 "winsnstr: (%d,%d)=('%c',%x)\n", win->cury, i, 205 win->alines[win->cury]->line[i].ch, 206 win->alines[win->cury]->line[i].attr); 207 } 208 } 209 #endif /* DEBUG */ 210 lnp = win->alines[win->cury]; 211 lnp->flags |= __ISDIRTY; 212 if (win->ch_off < *lnp->firstchp) 213 *lnp->firstchp = win->ch_off; 214 if (win->ch_off + win->maxx - 1 > *lnp->lastchp) 215 *lnp->lastchp = win->ch_off + win->maxx - 1; 216 __touchline(win, (int)win->cury, (int)win->curx, (int)win->maxx - 1); 217 __sync(win); 218 return OK; 219 } 220
Indexes created Mon Sep 22 13:09:51 GMT 2025