1 /* $NetBSD: ins_wstr.c,v 1.5 2010/02/23 19:48:26 drochner 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@arl.wustl.edu,ruibiao@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 1.5 2010/02/23 19:48:26 drochner 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(stdscr, 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(stdscr, 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 #ifndef HAVE_WCHAR 134 return ERR; 135 #else 136 __LDATA *start, *temp1, *temp2; 137 __LINE *lnp; 138 const wchar_t *scp; 139 int width, len, sx, x, y, cw, pcw, newx; 140 nschar_t *np; 141 wchar_t ws[] = L" "; 142 143 /* check for leading non-spacing character */ 144 if (!wstr) 145 return OK; 146 cw = wcwidth(*wstr); 147 if (cw < 0) 148 cw = 1; 149 if (!cw) 150 return ERR; 151 152 scp = wstr + 1; 153 width = cw; 154 len = 1; 155 n--; 156 while (*scp) { 157 int w; 158 if (!n) 159 break; 160 w = wcwidth(*scp); 161 if (w < 0) 162 w = 1; 163 n--, len++, width += w; 164 scp++; 165 } 166 #ifdef DEBUG 167 __CTRACE(__CTRACE_INPUT, "wins_nwstr: width=%d,len=%d\n", width, len); 168 #endif /* DEBUG */ 169 170 if (cw > win->maxx - win->curx + 1) 171 return ERR; 172 start = &win->alines[win->cury]->line[win->curx]; 173 sx = win->curx; 174 lnp = win->alines[win->cury]; 175 pcw = WCOL(*start); 176 if (pcw < 0) { 177 sx += pcw; 178 start += pcw; 179 } 180 #ifdef DEBUG 181 __CTRACE(__CTRACE_INPUT, "wins_nwstr: start@(%d)\n", sx); 182 #endif /* DEBUG */ 183 pcw = WCOL(*start); 184 lnp->flags |= __ISDIRTY; 185 newx = sx + win->ch_off; 186 if (newx < *lnp->firstchp) 187 *lnp->firstchp = newx; 188 #ifdef DEBUG 189 { 190 __CTRACE(__CTRACE_INPUT, "========before=======\n"); 191 for (x = 0; x < win->maxx; x++) 192 __CTRACE(__CTRACE_INPUT, 193 "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", 194 (int) win->cury, x, 195 win->alines[win->cury]->line[x].ch, 196 win->alines[win->cury]->line[x].attr, 197 win->alines[win->cury]->line[x].nsp); 198 } 199 #endif /* DEBUG */ 200 201 /* shift all complete characters */ 202 if (sx + width + pcw <= win->maxx) { 203 #ifdef DEBUG 204 __CTRACE(__CTRACE_INPUT, "wins_nwstr: shift all characters\n"); 205 #endif /* DEBUG */ 206 temp1 = &win->alines[win->cury]->line[win->maxx - 1]; 207 temp2 = temp1 - width; 208 pcw = WCOL(*(temp2 + 1)); 209 if (pcw < 0) { 210 #ifdef DEBUG 211 __CTRACE(__CTRACE_INPUT, 212 "wins_nwstr: clear from %d to EOL(%d)\n", 213 win->maxx + pcw, win->maxx - 1); 214 #endif /* DEBUG */ 215 temp2 += pcw; 216 while (temp1 > temp2 + width) { 217 temp1->ch = (wchar_t)btowc((int) win->bch); 218 if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR) 219 return ERR; 220 temp1->attr = win->battr; 221 SET_WCOL(*temp1, 1); 222 #ifdef DEBUG 223 __CTRACE(__CTRACE_INPUT, 224 "wins_nwstr: empty cell(%p)\n", temp1); 225 #endif /* DEBUG */ 226 temp1--; 227 } 228 } 229 while (temp2 >= start) { 230 (void)memcpy(temp1, temp2, sizeof(__LDATA)); 231 temp1--, temp2--; 232 } 233 #ifdef DEBUG 234 { 235 __CTRACE(__CTRACE_INPUT, "=====after shift====\n"); 236 for (x = 0; x < win->maxx; x++) 237 __CTRACE(__CTRACE_INPUT, 238 "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", 239 (int) win->cury, x, 240 win->alines[win->cury]->line[x].ch, 241 win->alines[win->cury]->line[x].attr, 242 win->alines[win->cury]->line[x].nsp); 243 } 244 #endif /* DEBUG */ 245 } 246 247 /* update string columns */ 248 x = win->curx; 249 y = win->cury; 250 for (scp = wstr, temp1 = start; len; len--, scp++) { 251 switch (*scp) { 252 case L'\b': 253 if (--x < 0) 254 x = 0; 255 win->curx = x; 256 continue;; 257 case L'\r': 258 win->curx = 0; 259 continue; 260 case L'\n': 261 wclrtoeol(win); 262 if (y == win->scr_b) { 263 if (!(win->flags & __SCROLLOK)) 264 return ERR; 265 scroll(win); 266 } 267 continue; 268 case L'\t': 269 if (wins_nwstr(win, ws, 270 min(win->maxx - x, 8-(x % 8))) 271 == ERR) 272 return ERR; 273 continue; 274 } 275 cw = wcwidth(*scp); 276 if (cw < 0) 277 cw = 1; 278 if (cw) { 279 /* 1st column */ 280 temp1->ch = (wchar_t)*scp; 281 temp1->attr = win->wattr; 282 SET_WCOL(*temp1, cw); 283 temp1->nsp = NULL; 284 #ifdef DEBUG 285 __CTRACE(__CTRACE_INPUT, 286 "wins_nwstr: add spacing char(%x)\n", temp1->ch); 287 #endif /* DEBUG */ 288 temp2 = temp1++; 289 if (cw > 1) { 290 x = -1; 291 while (temp1 < temp2 + cw) { 292 /* the rest columns */ 293 temp1->ch = (wchar_t)*scp; 294 temp1->attr = win->wattr; 295 temp1->nsp = NULL; 296 SET_WCOL(*temp1, x); 297 temp1++, x--; 298 } 299 temp1--; 300 } 301 } else { 302 /* non-spacing character */ 303 np = (nschar_t *)malloc(sizeof(nschar_t)); 304 if (!np) 305 return ERR; 306 np->ch = *scp; 307 np->next = temp1->nsp; 308 temp1->nsp = np; 309 #ifdef DEBUG 310 __CTRACE(__CTRACE_INPUT, 311 "wins_nstr: add non-spacing char(%x)\n", np->ch); 312 #endif /* DEBUG */ 313 } 314 } 315 #ifdef DEBUG 316 { 317 __CTRACE(__CTRACE_INPUT, "========after=======\n"); 318 for (x = 0; x < win->maxx; x++) 319 __CTRACE(__CTRACE_INPUT, 320 "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", 321 (int) win->cury, x, 322 win->alines[win->cury]->line[x].ch, 323 win->alines[win->cury]->line[x].attr, 324 win->alines[win->cury]->line[x].nsp); 325 } 326 #endif /* DEBUG */ 327 newx = win->maxx - 1 + win->ch_off; 328 if (newx > *lnp->lastchp) 329 *lnp->lastchp = newx; 330 __touchline(win, (int) win->cury, sx, (int) win->maxx - 1); 331 return OK; 332 #endif /* HAVE_WCHAR */ 333 } 334