1 /* 2 * Copyright (c) 1987, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 /* from: static char sccsid[] = "@(#)addbytes.c 8.1 (Berkeley) 6/11/93"; */ 36 static char *rcsid = "$Id: addbytes.c,v 1.8 1993/11/09 04:06:46 cgd Exp $"; 37 #endif /* not lint */ 38 39 #include <curses.h> 40 #include <termios.h> 41 42 #define SYNCH_IN {y = win->cury; x = win->curx;} 43 #define SYNCH_OUT {win->cury = y; win->curx = x;} 44 45 /* 46 * waddbytes -- 47 * Add the character to the current position in the given window. 48 */ 49 int 50 __waddbytes(win, bytes, count, so) 51 register WINDOW *win; 52 register const char *bytes; 53 register int count; 54 int so; 55 { 56 static char blanks[] = " "; 57 register int c, newx, x, y; 58 char stand; 59 __LINE *lp; 60 61 SYNCH_IN; 62 63 #ifdef DEBUG 64 __CTRACE("ADDBYTES('%c') at (%d, %d)\n", c, y, x); 65 #endif 66 while (count--) { 67 c = *bytes++; 68 switch (c) { 69 case '\t': 70 SYNCH_OUT; 71 if (waddbytes(win, blanks, 8 - (x % 8)) == ERR) 72 return (ERR); 73 SYNCH_IN; 74 break; 75 76 default: 77 #ifdef DEBUG 78 __CTRACE("ADDBYTES(%0.2o, %d, %d)\n", win, y, x); 79 #endif 80 81 lp = win->lines[y]; 82 if (lp->flags & __ISPASTEOL) { 83 lp->flags &= ~__ISPASTEOL; 84 newline: if (y == win->maxy - 1) { 85 if (win->flags & __SCROLLOK) { 86 SYNCH_OUT; 87 scroll(win); 88 SYNCH_IN; 89 lp = win->lines[y]; 90 x = 0; 91 } 92 } else { 93 y++; 94 lp = win->lines[y]; 95 x = 0; 96 } 97 if (c == '\n') 98 break; 99 } 100 101 stand = '\0'; 102 if (win->flags & __WSTANDOUT || so) 103 stand |= __STANDOUT; 104 #ifdef DEBUG 105 __CTRACE("ADDBYTES: 1: y = %d, x = %d, firstch = %d, lastch = %d\n", 106 y, x, *win->lines[y]->firstchp, *win->lines[y]->lastchp); 107 #endif 108 if (lp->line[x].ch != c || 109 !(lp->line[x].attr & stand)) { 110 newx = x + win->ch_off; 111 if (!(lp->flags & __ISDIRTY)) { 112 lp->flags |= __ISDIRTY; 113 *lp->firstchp = *lp->lastchp = newx; 114 } 115 else if (newx < *lp->firstchp) 116 *lp->firstchp = newx; 117 else if (newx > *lp->lastchp) 118 *lp->lastchp = newx; 119 #ifdef DEBUG 120 __CTRACE("ADDBYTES: change gives f/l: %d/%d [%d/%d]\n", 121 *lp->firstchp, *lp->lastchp, 122 *lp->firstchp - win->ch_off, 123 *lp->lastchp - win->ch_off); 124 #endif 125 } 126 lp->line[x].ch = c; 127 if (stand) 128 lp->line[x].attr |= __STANDOUT; 129 else 130 lp->line[x].attr &= ~__STANDOUT; 131 if (x == win->maxx - 1) 132 lp->flags |= __ISPASTEOL; 133 else 134 x++; 135 #ifdef DEBUG 136 __CTRACE("ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", 137 y, x, *win->lines[y]->firstchp, *win->lines[y]->lastchp); 138 #endif 139 break; 140 case '\n': 141 SYNCH_OUT; 142 wclrtoeol(win); 143 SYNCH_IN; 144 if (!NONL) 145 x = 0; 146 goto newline; 147 case '\r': 148 x = 0; 149 break; 150 case '\b': 151 if (--x < 0) 152 x = 0; 153 break; 154 } 155 } 156 SYNCH_OUT; 157 return (OK); 158 } 159