1 /* $NetBSD: ins_wstr.c,v 1.3 2007/05/29 11:10:56 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@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 1.3 2007/05/29 11:10:56 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 /* 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) 148 return ERR; 149 150 scp = wstr + 1; 151 width = cw; 152 len = 1; 153 n--; 154 while (*scp) { 155 if (!n) 156 break; 157 n--, len++, width += wcwidth(*scp); 158 scp++; 159 } 160 #ifdef DEBUG 161 __CTRACE(__CTRACE_INPUT, "wins_nwstr: width=%d,len=%d\n", width, len); 162 #endif /* DEBUG */ 163 164 if (cw > win->maxx - win->curx + 1) 165 return ERR; 166 start = &win->lines[win->cury]->line[win->curx]; 167 sx = win->curx; 168 lnp = win->lines[win->cury]; 169 pcw = WCOL(*start); 170 if (pcw < 0) { 171 sx += pcw; 172 start += pcw; 173 } 174 #ifdef DEBUG 175 __CTRACE(__CTRACE_INPUT, "wins_nwstr: start@(%d)\n", sx); 176 #endif /* DEBUG */ 177 pcw = WCOL(*start); 178 lnp->flags |= __ISDIRTY; 179 newx = sx + win->ch_off; 180 if (newx < *lnp->firstchp) 181 *lnp->firstchp = newx; 182 #ifdef DEBUG 183 { 184 __CTRACE(__CTRACE_INPUT, "========before=======\n"); 185 for (x = 0; x < win->maxx; x++) 186 __CTRACE(__CTRACE_INPUT, 187 "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", 188 (int) win->cury, x, 189 win->lines[win->cury]->line[x].ch, 190 win->lines[win->cury]->line[x].attr, 191 win->lines[win->cury]->line[x].nsp); 192 } 193 #endif /* DEBUG */ 194 195 /* shift all complete characters */ 196 if (sx + width + pcw <= win->maxx) { 197 #ifdef DEBUG 198 __CTRACE(__CTRACE_INPUT, "wins_nwstr: shift all characters\n"); 199 #endif /* DEBUG */ 200 temp1 = &win->lines[win->cury]->line[win->maxx - 1]; 201 temp2 = temp1 - width; 202 pcw = WCOL(*(temp2 + 1)); 203 if (pcw < 0) { 204 #ifdef DEBUG 205 __CTRACE(__CTRACE_INPUT, 206 "wins_nwstr: clear from %d to EOL(%d)\n", 207 win->maxx + pcw, win->maxx - 1); 208 #endif /* DEBUG */ 209 temp2 += pcw; 210 while (temp1 > temp2 + width) { 211 temp1->ch = (wchar_t)btowc((int) win->bch); 212 if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR) 213 return ERR; 214 temp1->attr = win->battr; 215 SET_WCOL(*temp1, 1); 216 #ifdef DEBUG 217 __CTRACE(__CTRACE_INPUT, 218 "wins_nwstr: empty cell(%p)\n", temp1); 219 #endif /* DEBUG */ 220 temp1--; 221 } 222 } 223 while (temp2 >= start) { 224 (void)memcpy(temp1, temp2, sizeof(__LDATA)); 225 temp1--, temp2--; 226 } 227 #ifdef DEBUG 228 { 229 __CTRACE(__CTRACE_INPUT, "=====after shift====\n"); 230 for (x = 0; x < win->maxx; x++) 231 __CTRACE(__CTRACE_INPUT, 232 "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", 233 (int) win->cury, x, 234 win->lines[win->cury]->line[x].ch, 235 win->lines[win->cury]->line[x].attr, 236 win->lines[win->cury]->line[x].nsp); 237 } 238 #endif /* DEBUG */ 239 } 240 241 /* update string columns */ 242 x = win->curx; 243 y = win->cury; 244 for (scp = wstr, temp1 = start; len; len--, scp++) { 245 switch (*scp) { 246 case L'\b': 247 if (--x < 0) 248 x = 0; 249 win->curx = x; 250 continue;; 251 case L'\r': 252 win->curx = 0; 253 continue; 254 case L'\n': 255 wclrtoeol(win); 256 if (y == win->scr_b) { 257 if (!(win->flags & __SCROLLOK)) 258 return ERR; 259 scroll(win); 260 } 261 continue; 262 case L'\t': 263 if (wins_nwstr(win, ws, 264 min(win->maxx - x, 8-(x % 8))) 265 == ERR) 266 return ERR; 267 continue; 268 } 269 cw = wcwidth(*scp); 270 if (cw) { 271 /* 1st column */ 272 temp1->ch = (wchar_t)*scp; 273 temp1->attr = win->wattr; 274 SET_WCOL(*temp1, cw); 275 temp1->nsp = NULL; 276 #ifdef DEBUG 277 __CTRACE(__CTRACE_INPUT, 278 "wins_nwstr: add spacing char(%x)\n", temp1->ch); 279 #endif /* DEBUG */ 280 temp2 = temp1++; 281 if (cw > 1) { 282 x = -1; 283 while (temp1 < temp2 + cw) { 284 /* the rest columns */ 285 temp1->ch = (wchar_t)*scp; 286 temp1->attr = win->wattr; 287 temp1->nsp = NULL; 288 SET_WCOL(*temp1, x); 289 temp1++, x--; 290 } 291 temp1--; 292 } 293 } else { 294 /* non-spacing character */ 295 np = (nschar_t *)malloc(sizeof(nschar_t)); 296 if (!np) 297 return ERR; 298 np->ch = *scp; 299 np->next = temp1->nsp; 300 temp1->nsp = np; 301 #ifdef DEBUG 302 __CTRACE(__CTRACE_INPUT, 303 "wins_nstr: add non-spacing char(%x)\n", np->ch); 304 #endif /* DEBUG */ 305 } 306 } 307 #ifdef DEBUG 308 { 309 __CTRACE(__CTRACE_INPUT, "========after=======\n"); 310 for (x = 0; x < win->maxx; x++) 311 __CTRACE(__CTRACE_INPUT, 312 "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", 313 (int) win->cury, x, 314 win->lines[win->cury]->line[x].ch, 315 win->lines[win->cury]->line[x].attr, 316 win->lines[win->cury]->line[x].nsp); 317 } 318 #endif /* DEBUG */ 319 newx = win->maxx - 1 + win->ch_off; 320 if (newx > *lnp->lastchp) 321 *lnp->lastchp = newx; 322 __touchline(win, (int) win->cury, sx, (int) win->maxx - 1); 323 return OK; 324 #endif /* HAVE_WCHAR */ 325 } 326