addbytes.c revision 1.30.6.2
1 /* $NetBSD: addbytes.c,v 1.30.6.2 2007/01/21 17:43:35 jdc Exp $ */ 2 3 /* 4 * Copyright (c) 1987, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <assert.h> 33 #include <sys/cdefs.h> 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)addbytes.c 8.4 (Berkeley) 5/4/94"; 37 #else 38 __RCSID("$NetBSD: addbytes.c,v 1.30.6.2 2007/01/21 17:43:35 jdc Exp $"); 39 #endif 40 #endif /* not lint */ 41 42 #include <stdlib.h> 43 #include "curses.h" 44 #include "curses_private.h" 45 46 #define SYNCH_IN {y = win->cury; x = win->curx;} 47 #define SYNCH_OUT {win->cury = y; win->curx = x;} 48 49 #ifndef _CURSES_USE_MACROS 50 51 /* 52 * addbytes -- 53 * Add the character to the current position in stdscr. 54 */ 55 int 56 addbytes(const char *bytes, int count) 57 { 58 return __waddbytes(stdscr, bytes, count, 0); 59 } 60 61 /* 62 * waddbytes -- 63 * Add the character to the current position in the given window. 64 */ 65 int 66 waddbytes(WINDOW *win, const char *bytes, int count) 67 { 68 return __waddbytes(win, bytes, count, 0); 69 } 70 71 /* 72 * mvaddbytes -- 73 * Add the characters to stdscr at the location given. 74 */ 75 int 76 mvaddbytes(int y, int x, const char *bytes, int count) 77 { 78 return mvwaddbytes(stdscr, y, x, bytes, count); 79 } 80 81 /* 82 * mvwaddbytes -- 83 * Add the characters to the given window at the location given. 84 */ 85 int 86 mvwaddbytes(WINDOW *win, int y, int x, const char *bytes, int count) 87 { 88 if (wmove(win, y, x) == ERR) 89 return ERR; 90 91 return __waddbytes(win, bytes, count, 0); 92 } 93 94 #endif 95 96 /* 97 * waddbytes -- 98 * Add the character to the current position in the given window. 99 */ 100 int 101 __waddbytes(WINDOW *win, const char *bytes, int count, attr_t attr) 102 { 103 static char blanks[] = " "; 104 int c, newx, x, y; 105 attr_t attributes; 106 __LINE *lp; 107 #ifdef DEBUG 108 int i; 109 110 for (i = 0; i < win->maxy; i++) { 111 assert(win->lines[i]->sentinel == SENTINEL_VALUE); 112 } 113 #endif 114 115 SYNCH_IN; 116 lp = win->lines[y]; 117 118 while (count--) { 119 c = *bytes++; 120 #ifdef DEBUG 121 __CTRACE(__CTRACE_INPUT, "ADDBYTES('%c', %x) at (%d, %d)\n", 122 c, attr, y, x); 123 #endif 124 switch (c) { 125 case '\t': 126 SYNCH_OUT; 127 if (waddbytes(win, blanks, 8 - (x % 8)) == ERR) 128 return (ERR); 129 SYNCH_IN; 130 break; 131 132 default: 133 #ifdef DEBUG 134 __CTRACE(__CTRACE_INPUT, "ADDBYTES(%p, %d, %d)\n", 135 win, y, x); 136 #endif 137 138 if (lp->flags & __ISPASTEOL) { 139 newline: 140 x = 0; 141 lp->flags &= ~__ISPASTEOL; 142 if (y == win->scr_b) { 143 #ifdef DEBUG 144 __CTRACE(__CTRACE_INPUT, 145 "ADDBYTES - on bottom " 146 "of scrolling region\n"); 147 #endif 148 if (!(win->flags & __SCROLLOK)) 149 return ERR; 150 SYNCH_OUT; 151 scroll(win); 152 SYNCH_IN; 153 } else { 154 y++; 155 } 156 lp = win->lines[y]; 157 if (c == '\n') 158 break; 159 } 160 161 attributes = (win->wattr | attr) & 162 (__ATTRIBUTES & ~__COLOR); 163 if (attr & __COLOR) 164 attributes |= attr & __COLOR; 165 else if (win->wattr & __COLOR) 166 attributes |= win->wattr & __COLOR; 167 #ifdef DEBUG 168 __CTRACE(__CTRACE_INPUT, 169 "ADDBYTES: 1: y = %d, x = %d, firstch = %d, " 170 "lastch = %d\n", 171 y, x, *win->lines[y]->firstchp, 172 *win->lines[y]->lastchp); 173 #endif 174 /* 175 * Always update the change pointers. Otherwise, 176 * we could end up not displaying 'blank' characters 177 * when overlapping windows are displayed. 178 */ 179 newx = x + win->ch_off; 180 lp->flags |= __ISDIRTY; 181 /* 182 * firstchp/lastchp are shared between 183 * parent window and sub-window. 184 */ 185 if (newx < *lp->firstchp) 186 *lp->firstchp = newx; 187 if (newx > *lp->lastchp) 188 *lp->lastchp = newx; 189 #ifdef DEBUG 190 __CTRACE(__CTRACE_INPUT, 191 "ADDBYTES: change gives f/l: %d/%d [%d/%d]\n", 192 *lp->firstchp, *lp->lastchp, 193 *lp->firstchp - win->ch_off, 194 *lp->lastchp - win->ch_off); 195 #endif 196 if (win->bch != ' ' && c == ' ') 197 lp->line[x].ch = win->bch; 198 else 199 lp->line[x].ch = c; 200 201 #ifdef HAVE_WCHAR 202 if (_cursesi_copy_nsp(win->bnsp, &lp->line[x]) == ERR) 203 return ERR; 204 #endif /* HAVE_WCHAR */ 205 206 if (attributes & __COLOR) 207 lp->line[x].attr = 208 attributes | (win->battr & ~__COLOR); 209 else 210 lp->line[x].attr = attributes | win->battr; 211 #ifdef HAVE_WCHAR 212 SET_WCOL(lp->line[x], 1); 213 #endif /* HAVE_WCHAR */ 214 215 if (x == win->maxx - 1) 216 lp->flags |= __ISPASTEOL; 217 else 218 x++; 219 #ifdef DEBUG 220 __CTRACE(__CTRACE_INPUT, 221 "ADDBYTES: 2: y = %d, x = %d, firstch = %d, " 222 "lastch = %d\n", 223 y, x, *win->lines[y]->firstchp, 224 *win->lines[y]->lastchp); 225 #endif 226 break; 227 case '\n': 228 SYNCH_OUT; 229 wclrtoeol(win); 230 SYNCH_IN; 231 goto newline; 232 case '\r': 233 x = 0; 234 continue; 235 case '\b': 236 if (--x < 0) 237 x = 0; 238 break; 239 } 240 } 241 SYNCH_OUT; 242 243 #ifdef DEBUG 244 for (i = 0; i < win->maxy; i++) { 245 assert(win->lines[i]->sentinel == SENTINEL_VALUE); 246 } 247 #endif 248 249 return (OK); 250 } 251
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