addbytes.c revision 1.30
1 /* $NetBSD: addbytes.c,v 1.30 2006/01/15 11:43:54 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 <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)addbytes.c 8.4 (Berkeley) 5/4/94"; 36 #else 37 __RCSID("$NetBSD: addbytes.c,v 1.30 2006/01/15 11:43:54 jdc Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include "curses.h" 42 #include "curses_private.h" 43 #ifdef DEBUG 44 #include <assert.h> 45 #endif 46 47 #define SYNCH_IN {y = win->cury; x = win->curx;} 48 #define SYNCH_OUT {win->cury = y; win->curx = x;} 49 50 #ifndef _CURSES_USE_MACROS 51 52 /* 53 * addbytes -- 54 * Add the character to the current position in stdscr. 55 */ 56 int 57 addbytes(const char *bytes, int count) 58 { 59 return __waddbytes(stdscr, bytes, count, 0); 60 } 61 62 /* 63 * waddbytes -- 64 * Add the character to the current position in the given window. 65 */ 66 int 67 waddbytes(WINDOW *win, const char *bytes, int count) 68 { 69 return __waddbytes(win, bytes, count, 0); 70 } 71 72 /* 73 * mvaddbytes -- 74 * Add the characters to stdscr at the location given. 75 */ 76 int 77 mvaddbytes(int y, int x, const char *bytes, int count) 78 { 79 return mvwaddbytes(stdscr, y, x, bytes, count); 80 } 81 82 /* 83 * mvwaddbytes -- 84 * Add the characters to the given window at the location given. 85 */ 86 int 87 mvwaddbytes(WINDOW *win, int y, int x, const char *bytes, int count) 88 { 89 if (wmove(win, y, x) == ERR) 90 return ERR; 91 92 return __waddbytes(win, bytes, count, 0); 93 } 94 95 #endif 96 97 /* 98 * waddbytes -- 99 * Add the character to the current position in the given window. 100 */ 101 int 102 __waddbytes(WINDOW *win, const char *bytes, int count, attr_t attr) 103 { 104 static char blanks[] = " "; 105 int c, newx, x, y; 106 attr_t attributes; 107 __LINE *lp; 108 #ifdef DEBUG 109 int i; 110 111 for (i = 0; i < win->maxy; i++) { 112 assert(win->lines[i]->sentinel == SENTINEL_VALUE); 113 } 114 #endif 115 116 SYNCH_IN; 117 lp = win->lines[y]; 118 119 while (count--) { 120 c = *bytes++; 121 #ifdef DEBUG 122 __CTRACE("ADDBYTES('%c', %x) at (%d, %d)\n", 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("ADDBYTES(%p, %d, %d)\n", win, y, x); 135 #endif 136 137 if (lp->flags & __ISPASTEOL) { 138 newline: 139 x = 0; 140 lp->flags &= ~__ISPASTEOL; 141 if (y == win->scr_b) { 142 #ifdef DEBUG 143 __CTRACE("ADDBYTES - on bottom " 144 "of scrolling region\n"); 145 #endif 146 if (!(win->flags & __SCROLLOK)) 147 return ERR; 148 SYNCH_OUT; 149 scroll(win); 150 SYNCH_IN; 151 } else { 152 y++; 153 } 154 lp = win->lines[y]; 155 if (c == '\n') 156 break; 157 } 158 159 attributes = (win->wattr | attr) & 160 (__ATTRIBUTES & ~__COLOR); 161 if (attr & __COLOR) 162 attributes |= attr & __COLOR; 163 else if (win->wattr & __COLOR) 164 attributes |= win->wattr & __COLOR; 165 #ifdef DEBUG 166 __CTRACE("ADDBYTES: 1: y = %d, x = %d, firstch = %d, " 167 "lastch = %d\n", 168 y, x, *win->lines[y]->firstchp, 169 *win->lines[y]->lastchp); 170 #endif 171 /* 172 * Always update the change pointers. Otherwise, 173 * we could end up not displaying 'blank' characters 174 * when overlapping windows are displayed. 175 */ 176 newx = x + win->ch_off; 177 lp->flags |= __ISDIRTY; 178 /* 179 * firstchp/lastchp are shared between 180 * parent window and sub-window. 181 */ 182 if (newx < *lp->firstchp) 183 *lp->firstchp = newx; 184 if (newx > *lp->lastchp) 185 *lp->lastchp = newx; 186 #ifdef DEBUG 187 __CTRACE("ADDBYTES: change gives f/l: %d/%d [%d/%d]\n", 188 *lp->firstchp, *lp->lastchp, 189 *lp->firstchp - win->ch_off, 190 *lp->lastchp - win->ch_off); 191 #endif 192 if (win->bch != ' ' && c == ' ') 193 lp->line[x].ch = win->bch; 194 else 195 lp->line[x].ch = c; 196 if (attributes & __COLOR) 197 lp->line[x].attr = 198 attributes | (win->battr & ~__COLOR); 199 else 200 lp->line[x].attr = attributes | win->battr; 201 if (x == win->maxx - 1) 202 lp->flags |= __ISPASTEOL; 203 else 204 x++; 205 #ifdef DEBUG 206 __CTRACE("ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", 207 y, x, *win->lines[y]->firstchp, 208 *win->lines[y]->lastchp); 209 #endif 210 break; 211 case '\n': 212 SYNCH_OUT; 213 wclrtoeol(win); 214 SYNCH_IN; 215 goto newline; 216 case '\r': 217 x = 0; 218 continue; 219 case '\b': 220 if (--x < 0) 221 x = 0; 222 break; 223 } 224 } 225 SYNCH_OUT; 226 227 #ifdef DEBUG 228 for (i = 0; i < win->maxy; i++) { 229 assert(win->lines[i]->sentinel == SENTINEL_VALUE); 230 } 231 #endif 232 233 return (OK); 234 } 235
Indexes created Wed Sep 24 15:09:51 GMT 2025