add_wchstr.c revision 1.10
1 /* $NetBSD: add_wchstr.c,v 1.10 2021/09/06 07:45:48 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: add_wchstr.c,v 1.10 2021/09/06 07:45:48 rin Exp $"); 40 #endif /* not lint */ 41 42 #include <stdlib.h> 43 44 #include "curses.h" 45 #include "curses_private.h" 46 47 /* 48 * add_wchstr -- 49 * Add a wide string to stdscr starting at (_cury, _curx). 50 */ 51 int 52 add_wchstr(const cchar_t *wchstr) 53 { 54 return wadd_wchnstr(stdscr, wchstr, -1); 55 } 56 57 58 /* 59 * wadd_wchstr -- 60 * Add a string to the given window starting at (_cury, _curx). 61 */ 62 int 63 wadd_wchstr(WINDOW *win, const cchar_t *wchstr) 64 { 65 return wadd_wchnstr(win, wchstr, -1); 66 } 67 68 69 /* 70 * add_wchnstr -- 71 * Add a string (at most n characters) to stdscr starting 72 * at (_cury, _curx). If n is negative, add the entire string. 73 */ 74 int 75 add_wchnstr(const cchar_t *wchstr, int n) 76 { 77 return wadd_wchnstr(stdscr, wchstr, n); 78 } 79 80 81 /* 82 * mvadd_wchstr -- 83 * Add a string to stdscr starting at (y, x) 84 */ 85 int 86 mvadd_wchstr(int y, int x, const cchar_t *wchstr) 87 { 88 return mvwadd_wchnstr(stdscr, y, x, wchstr, -1); 89 } 90 91 92 /* 93 * mvwadd_wchstr -- 94 * Add a string to the given window starting at (y, x) 95 */ 96 int 97 mvwadd_wchstr(WINDOW *win, int y, int x, const cchar_t *wchstr) 98 { 99 return mvwadd_wchnstr(win, y, x, wchstr, -1); 100 } 101 102 103 /* 104 * mvadd_wchnstr -- 105 * Add a string of at most n characters to stdscr 106 * starting at (y, x). 107 */ 108 int 109 mvadd_wchnstr(int y, int x, const cchar_t *wchstr, int n) 110 { 111 return mvwadd_wchnstr(stdscr, y, x, wchstr, n); 112 } 113 114 115 /* 116 * mvwadd_wchnstr -- 117 * Add a string of at most n characters to the given window 118 * starting at (y, x). 119 */ 120 int 121 mvwadd_wchnstr(WINDOW *win, int y, int x, const cchar_t *wchstr, int n) 122 { 123 if (wmove(win, y, x) == ERR) 124 return ERR; 125 126 return wadd_wchnstr(win, wchstr, n); 127 } 128 129 130 /* 131 * wadd_wchnstr -- 132 * Add a string (at most n wide characters) to the given window 133 * starting at (_cury, _curx). If n is -1, add the entire string. 134 */ 135 int 136 wadd_wchnstr(WINDOW *win, const cchar_t *wchstr, int n) 137 { 138 const cchar_t *chp; 139 wchar_t wc; 140 int cw, x, y, sx, ex, newx, i, cnt; 141 __LDATA *lp, *tp; 142 nschar_t *np, *tnp; 143 __LINE *lnp; 144 145 __CTRACE(__CTRACE_INPUT, 146 "wadd_wchnstr: win = %p, wchstr = %p, n = %d\n", win, wchstr, n); 147 148 if (!wchstr) 149 return OK; 150 151 /* compute length of the cchar string */ 152 if (n < -1) 153 return ERR; 154 if (n >= 0) 155 for (chp = wchstr, cnt = 0; n && chp->vals[0]; 156 n--, chp++, ++cnt); 157 else 158 for (chp = wchstr, cnt = 0; chp->vals[0]; chp++, ++cnt); 159 __CTRACE(__CTRACE_INPUT, "wadd_wchnstr: len=%d\n", cnt); 160 chp = wchstr; 161 x = win->curx; 162 y = win->cury; 163 lp = &win->alines[y]->line[x]; 164 lnp = win->alines[y]; 165 166 cw = WCOL(*lp); 167 if (cw >= 0) { 168 sx = x; 169 } else { 170 if (wcwidth(chp->vals[0])) { 171 /* clear the partial character before cursor */ 172 for (tp = lp + cw; tp < lp; tp++) { 173 tp->ch = (wchar_t) btowc((int) win->bch); 174 if (_cursesi_copy_nsp(win->bnsp, tp) == ERR) 175 return ERR; 176 tp->attr = win->battr; 177 SET_WCOL(*tp, 1); 178 np = tp->nsp; 179 } 180 } else { 181 /* move to the start of current char */ 182 lp += cw; 183 x += cw; 184 } 185 sx = x + cw; 186 } 187 lnp->flags |= __ISDIRTY; 188 newx = sx + win->ch_off; 189 if (newx < *lnp->firstchp) 190 *lnp->firstchp = newx; 191 192 /* add characters in the string */ 193 ex = x; 194 while (cnt) { 195 x = ex; 196 wc = chp->vals[0]; 197 __CTRACE(__CTRACE_INPUT, "wadd_wchnstr: adding %x", wc); 198 cw = wcwidth(wc); 199 if (cw < 0) 200 cw = 1; 201 if (cw) { 202 /* spacing character */ 203 __CTRACE(__CTRACE_INPUT, 204 " as a spacing char(width=%d)\n", cw); 205 if (cw > win->maxx - ex) { 206 /* clear to EOL */ 207 while (ex < win->maxx) { 208 lp->ch = (wchar_t) 209 btowc((int) win->bch); 210 if (_cursesi_copy_nsp(win->bnsp, lp) 211 == ERR) 212 return ERR; 213 lp->attr = win->battr; 214 SET_WCOL(*lp, 1); 215 lp++, ex++; 216 } 217 ex = win->maxx - 1; 218 break; 219 } 220 /* this could combine with the insertion of 221 * non-spacing char */ 222 np = lp->nsp; 223 if (np) { 224 while (np) { 225 tnp = np->next; 226 free(np); 227 np = tnp; 228 } 229 lp->nsp = NULL; 230 } 231 lp->ch = chp->vals[0]; 232 lp->attr = chp->attributes & WA_ATTRIBUTES; 233 SET_WCOL(*lp, cw); 234 if (chp->elements > 1) { 235 for (i = 1; i < chp->elements; i++) { 236 np = (nschar_t *) 237 malloc(sizeof(nschar_t)); 238 if (!np) 239 return ERR; 240 np->ch = chp->vals[i]; 241 np->next = lp->nsp; 242 lp->nsp = np; 243 } 244 } 245 lp++, ex++; 246 __CTRACE(__CTRACE_INPUT, 247 "wadd_wchnstr: ex = %d, x = %d, cw = %d\n", 248 ex, x, cw); 249 while (ex - x <= cw - 1) { 250 np = lp->nsp; 251 if (np) { 252 while (np) { 253 tnp = np->next; 254 free(np); 255 np = tnp; 256 } 257 lp->nsp = NULL; 258 } 259 lp->ch = chp->vals[0]; 260 lp->attr = chp->attributes & WA_ATTRIBUTES; 261 SET_WCOL(*lp, x - ex); 262 lp++, ex++; 263 } 264 } else { 265 /* non-spacing character */ 266 __CTRACE(__CTRACE_INPUT, 267 "wadd_wchnstr: as non-spacing char"); 268 for (i = 0; i < chp->elements; i++) { 269 np = malloc(sizeof(nschar_t)); 270 if (!np) 271 return ERR; 272 np->ch = chp->vals[i]; 273 np->next = lp->nsp; 274 lp->nsp = np; 275 } 276 } 277 cnt--, chp++; 278 } 279 #ifdef DEBUG 280 for (i = sx; i < ex; i++) { 281 __CTRACE(__CTRACE_INPUT, "wadd_wchnstr: (%d,%d)=(%x,%x,%p)\n", 282 win->cury, i, win->alines[win->cury]->line[i].ch, 283 win->alines[win->cury]->line[i].attr, 284 win->alines[win->cury]->line[i].nsp); 285 } 286 #endif /* DEBUG */ 287 lnp->flags |= __ISDIRTY; 288 newx = ex + win->ch_off; 289 if (newx > *lnp->lastchp) 290 *lnp->lastchp = newx; 291 __touchline(win, y, sx, ex); 292 293 return OK; 294 } 295
Indexes created Sat Sep 20 22:09:52 GMT 2025