addbytes.c revision 1.30.6.1
1 /* $NetBSD: addbytes.c,v 1.30.6.1 2007/01/21 11:38:59 blymn 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 1.30.6.1 2007/01/21 11:38:59 blymn Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <stdlib.h> 42 #include "curses.h" 43 #include "curses_private.h" 44 45 #define SYNCH_IN {y = win->cury; x = win->curx;} 46 #define SYNCH_OUT {win->cury = y; win->curx = x;} 47 48 #ifndef _CURSES_USE_MACROS 49 50 /* 51 * addbytes -- 52 * Add the character to the current position in stdscr. 53 */ 54 int 55 addbytes(const char *bytes, int count) 56 { 57 return __waddbytes(stdscr, bytes, count, 0); 58 } 59 60 /* 61 * waddbytes -- 62 * Add the character to the current position in the given window. 63 */ 64 int 65 waddbytes(WINDOW *win, const char *bytes, int count) 66 { 67 return __waddbytes(win, bytes, count, 0); 68 } 69 70 /* 71 * mvaddbytes -- 72 * Add the characters to stdscr at the location given. 73 */ 74 int 75 mvaddbytes(int y, int x, const char *bytes, int count) 76 { 77 return mvwaddbytes(stdscr, y, x, bytes, count); 78 } 79 80 /* 81 * mvwaddbytes -- 82 * Add the characters to the given window at the location given. 83 */ 84 int 85 mvwaddbytes(WINDOW *win, int y, int x, const char *bytes, int count) 86 { 87 if (wmove(win, y, x) == ERR) 88 return ERR; 89 90 return __waddbytes(win, bytes, count, 0); 91 } 92 93 #endif 94 95 /* 96 * waddbytes -- 97 * Add the character to the current position in the given window. 98 */ 99 int 100 __waddbytes(WINDOW *win, const char *bytes, int count, attr_t attr) 101 { 102 static char blanks[] = " "; 103 int c, newx, x, y; 104 attr_t attributes; 105 __LINE *lp; 106 #ifdef DEBUG 107 int i; 108 109 for (i = 0; i < win->maxy; i++) { 110 assert(win->lines[i]->sentinel == SENTINEL_VALUE); 111 } 112 #endif 113 114 SYNCH_IN; 115 lp = win->lines[y]; 116 117 while (count--) { 118 c = *bytes++; 119 #ifdef DEBUG 120 __CTRACE("ADDBYTES('%c', %x) at (%d, %d)\n", c, attr, y, x); 121 #endif 122 switch (c) { 123 case '\t': 124 SYNCH_OUT; 125 if (waddbytes(win, blanks, 8 - (x % 8)) == ERR) 126 return (ERR); 127 SYNCH_IN; 128 break; 129 130 default: 131 #ifdef DEBUG 132 __CTRACE("ADDBYTES(%p, %d, %d)\n", win, y, x); 133 #endif 134 135 if (lp->flags & __ISPASTEOL) { 136 newline: 137 x = 0; 138 lp->flags &= ~__ISPASTEOL; 139 if (y == win->scr_b) { 140 #ifdef DEBUG 141 __CTRACE("ADDBYTES - on bottom " 142 "of scrolling region\n"); 143 #endif 144 if (!(win->flags & __SCROLLOK)) 145 return ERR; 146 SYNCH_OUT; 147 scroll(win); 148 SYNCH_IN; 149 } else { 150 y++; 151 } 152 lp = win->lines[y]; 153 if (c == '\n') 154 break; 155 } 156 157 attributes = (win->wattr | attr) & 158 (__ATTRIBUTES & ~__COLOR); 159 if (attr & __COLOR) 160 attributes |= attr & __COLOR; 161 else if (win->wattr & __COLOR) 162 attributes |= win->wattr & __COLOR; 163 #ifdef DEBUG 164 __CTRACE("ADDBYTES: 1: y = %d, x = %d, firstch = %d, " 165 "lastch = %d\n", 166 y, x, *win->lines[y]->firstchp, 167 *win->lines[y]->lastchp); 168 #endif 169 /* 170 * Always update the change pointers. Otherwise, 171 * we could end up not displaying 'blank' characters 172 * when overlapping windows are displayed. 173 */ 174 newx = x + win->ch_off; 175 lp->flags |= __ISDIRTY; 176 /* 177 * firstchp/lastchp are shared between 178 * parent window and sub-window. 179 */ 180 if (newx < *lp->firstchp) 181 *lp->firstchp = newx; 182 if (newx > *lp->lastchp) 183 *lp->lastchp = newx; 184 #ifdef DEBUG 185 __CTRACE("ADDBYTES: change gives f/l: %d/%d [%d/%d]\n", 186 *lp->firstchp, *lp->lastchp, 187 *lp->firstchp - win->ch_off, 188 *lp->lastchp - win->ch_off); 189 #endif 190 if (win->bch != ' ' && c == ' ') 191 lp->line[x].ch = win->bch; 192 else 193 lp->line[x].ch = c; 194 195 #ifdef HAVE_WCHAR 196 if (_cursesi_copy_nsp(win->bnsp, &lp->line[x]) == ERR) 197 return ERR; 198 #endif /* HAVE_WCHAR */ 199 200 if (attributes & __COLOR) 201 lp->line[x].attr = 202 attributes | (win->battr & ~__COLOR); 203 else 204 lp->line[x].attr = attributes | win->battr; 205 #ifdef HAVE_WCHAR 206 SET_WCOL(lp->line[x], 1); 207 #endif /* HAVE_WCHAR */ 208 209 if (x == win->maxx - 1) 210 lp->flags |= __ISPASTEOL; 211 else 212 x++; 213 #ifdef DEBUG 214 __CTRACE("ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", 215 y, x, *win->lines[y]->firstchp, 216 *win->lines[y]->lastchp); 217 #endif 218 break; 219 case '\n': 220 SYNCH_OUT; 221 wclrtoeol(win); 222 SYNCH_IN; 223 goto newline; 224 case '\r': 225 x = 0; 226 continue; 227 case '\b': 228 if (--x < 0) 229 x = 0; 230 break; 231 } 232 } 233 SYNCH_OUT; 234 235 #ifdef DEBUG 236 for (i = 0; i < win->maxy; i++) { 237 assert(win->lines[i]->sentinel == SENTINEL_VALUE); 238 } 239 #endif 240 241 return (OK); 242 } 243
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