ins_wstr.c revision 1.16
1 /* $NetBSD: ins_wstr.c,v 1.16 2021/09/06 07:03:49 rin 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: ins_wstr.c,v 1.16 2021/09/06 07:03:49 rin 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 /* 49 * ins_wstr -- 50 * insert a multi-character wide-character string into the current window 51 */ 52 int 53 ins_wstr(const wchar_t *wstr) 54 { 55 return wins_wstr(stdscr, wstr); 56 } 57 58 /* 59 * ins_nwstr -- 60 * insert a multi-character wide-character string into the current window 61 * with at most n characters 62 */ 63 int 64 ins_nwstr(const wchar_t *wstr, int n) 65 { 66 return wins_nwstr(stdscr, wstr, n); 67 } 68 69 /* 70 * mvins_wstr -- 71 * Do an insert-string on the line at (y, x). 72 */ 73 int 74 mvins_wstr(int y, int x, const wchar_t *wstr) 75 { 76 return mvwins_wstr(stdscr, y, x, wstr); 77 } 78 79 /* 80 * mvins_nwstr -- 81 * Do an insert-n-string on the line at (y, x). 82 */ 83 int 84 mvins_nwstr(int y, int x, const wchar_t *wstr, int n) 85 { 86 return mvwins_nwstr(stdscr, y, x, wstr, n); 87 } 88 89 /* 90 * mvwins_wstr -- 91 * Do an insert-string on the line at (y, x) in the given window. 92 */ 93 int 94 mvwins_wstr(WINDOW *win, int y, int x, const wchar_t *wstr) 95 { 96 if (wmove(win, y, x) == ERR) 97 return ERR; 98 99 return wins_wstr(win, wstr); 100 } 101 102 /* 103 * mvwins_nwstr -- 104 * Do an insert-n-string on the line at (y, x) in the given window. 105 */ 106 int 107 mvwins_nwstr(WINDOW *win, int y, int x, const wchar_t *wstr, int n) 108 { 109 if (wmove(win, y, x) == ERR) 110 return ERR; 111 112 return wins_nwstr(win, wstr, n); 113 } 114 115 116 /* 117 * wins_wstr -- 118 * Do an insert-string on the line, leaving (cury, curx) unchanged. 119 */ 120 int 121 wins_wstr(WINDOW *win, const wchar_t *wstr) 122 { 123 return wins_nwstr(win, wstr, -1); 124 } 125 126 /* 127 * wins_nwstr -- 128 * Do an insert-n-string on the line, leaving (cury, curx) unchanged. 129 */ 130 int 131 wins_nwstr(WINDOW *win, const wchar_t *wstr, int n) 132 { 133 __LDATA *start, *temp1, *temp2; 134 __LINE *lnp; 135 const wchar_t *scp; 136 int width, len, sx, x, y, cw, pcw, newx; 137 nschar_t *np; 138 wchar_t ws[] = L" "; 139 140 /* check for leading non-spacing character */ 141 if (!wstr) 142 return OK; 143 cw = wcwidth(*wstr); 144 if (cw < 0) 145 cw = 1; 146 if (!cw) 147 return ERR; 148 149 scp = wstr + 1; 150 width = cw; 151 len = 1; 152 n--; 153 while (*scp) { 154 int w; 155 if (!n) 156 break; 157 w = wcwidth(*scp); 158 if (w < 0) 159 w = 1; 160 n--, len++, width += w; 161 scp++; 162 } 163 __CTRACE(__CTRACE_INPUT, "wins_nwstr: width=%d,len=%d\n", width, len); 164 165 if (cw > win->maxx - win->curx + 1) 166 return ERR; 167 start = &win->alines[win->cury]->line[win->curx]; 168 sx = win->curx; 169 lnp = win->alines[win->cury]; 170 pcw = WCOL(*start); 171 if (pcw < 0) { 172 sx += pcw; 173 start += pcw; 174 } 175 __CTRACE(__CTRACE_INPUT, "wins_nwstr: start@(%d)\n", sx); 176 pcw = WCOL(*start); 177 lnp->flags |= __ISDIRTY; 178 newx = sx + win->ch_off; 179 if (newx < *lnp->firstchp) 180 *lnp->firstchp = newx; 181 #ifdef DEBUG 182 { 183 __CTRACE(__CTRACE_INPUT, "========before=======\n"); 184 for (x = 0; x < win->maxx; x++) 185 __CTRACE(__CTRACE_INPUT, 186 "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", 187 (int) win->cury, x, 188 win->alines[win->cury]->line[x].ch, 189 win->alines[win->cury]->line[x].attr, 190 win->alines[win->cury]->line[x].nsp); 191 } 192 #endif /* DEBUG */ 193 194 /* shift all complete characters */ 195 if (sx + width + pcw <= win->maxx) { 196 __CTRACE(__CTRACE_INPUT, "wins_nwstr: shift all characters\n"); 197 temp1 = &win->alines[win->cury]->line[win->maxx - 1]; 198 temp2 = temp1 - width; 199 pcw = WCOL(*(temp2 + 1)); 200 if (pcw < 0) { 201 __CTRACE(__CTRACE_INPUT, 202 "wins_nwstr: clear from %d to EOL(%d)\n", 203 win->maxx + pcw, win->maxx - 1); 204 temp2 += pcw; 205 while (temp1 > temp2 + width) { 206 temp1->ch = (wchar_t)btowc((int) win->bch); 207 if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR) 208 return ERR; 209 temp1->attr = win->battr; 210 SET_WCOL(*temp1, 1); 211 __CTRACE(__CTRACE_INPUT, 212 "wins_nwstr: empty cell(%p)\n", temp1); 213 temp1--; 214 } 215 } 216 while (temp2 >= start) { 217 (void)memcpy(temp1, temp2, sizeof(__LDATA)); 218 temp1--, temp2--; 219 } 220 #ifdef DEBUG 221 { 222 __CTRACE(__CTRACE_INPUT, "=====after shift====\n"); 223 for (x = 0; x < win->maxx; x++) 224 __CTRACE(__CTRACE_INPUT, 225 "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", 226 (int) win->cury, x, 227 win->alines[win->cury]->line[x].ch, 228 win->alines[win->cury]->line[x].attr, 229 win->alines[win->cury]->line[x].nsp); 230 } 231 #endif /* DEBUG */ 232 } 233 234 /* update string columns */ 235 x = win->curx; 236 y = win->cury; 237 for (scp = wstr, temp1 = start; len; len--, scp++) { 238 switch (*scp) { 239 case L'\b': 240 if (--x < 0) 241 x = 0; 242 win->curx = x; 243 continue;; 244 case L'\r': 245 win->curx = 0; 246 continue; 247 case L'\n': 248 wclrtoeol(win); 249 if (y == win->scr_b) { 250 if (!(win->flags & __SCROLLOK)) 251 return ERR; 252 scroll(win); 253 } 254 continue; 255 case L'\t': 256 if (wins_nwstr(win, ws, 257 min(win->maxx - x, TABSIZE - (x % TABSIZE))) 258 == ERR) 259 return ERR; 260 continue; 261 } 262 cw = wcwidth(*scp); 263 if (cw < 0) 264 cw = 1; 265 if (cw) { 266 /* 1st column */ 267 temp1->ch = (wchar_t)*scp; 268 temp1->attr = win->wattr; 269 SET_WCOL(*temp1, cw); 270 temp1->nsp = NULL; 271 __CTRACE(__CTRACE_INPUT, 272 "wins_nwstr: add spacing char(%x)\n", temp1->ch); 273 temp2 = temp1++; 274 if (cw > 1) { 275 x = -1; 276 while (temp1 < temp2 + cw) { 277 /* the rest columns */ 278 temp1->ch = (wchar_t)*scp; 279 temp1->attr = win->wattr; 280 temp1->nsp = NULL; 281 SET_WCOL(*temp1, x); 282 temp1++, x--; 283 } 284 temp1--; 285 } 286 } else { 287 /* non-spacing character */ 288 np = malloc(sizeof(nschar_t)); 289 if (!np) 290 return ERR; 291 np->ch = *scp; 292 np->next = temp1->nsp; 293 temp1->nsp = np; 294 __CTRACE(__CTRACE_INPUT, 295 "wins_nstr: add non-spacing char(%x)\n", np->ch); 296 } 297 } 298 #ifdef DEBUG 299 { 300 __CTRACE(__CTRACE_INPUT, "========after=======\n"); 301 for (x = 0; x < win->maxx; x++) 302 __CTRACE(__CTRACE_INPUT, 303 "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", 304 (int) win->cury, x, 305 win->alines[win->cury]->line[x].ch, 306 win->alines[win->cury]->line[x].attr, 307 win->alines[win->cury]->line[x].nsp); 308 } 309 #endif /* DEBUG */ 310 newx = win->maxx - 1 + win->ch_off; 311 if (newx > *lnp->lastchp) 312 *lnp->lastchp = newx; 313 __touchline(win, (int) win->cury, sx, (int) win->maxx - 1); 314 __sync(win); 315 return OK; 316 } 317
Indexes created Mon Sep 29 21:09:56 GMT 2025