1 /* 2 * Copyright (c) 1987 Regents of the University of California. 3 * 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 /*static char sccsid[] = "from: @(#)addbytes.c 5.4 (Berkeley) 6/1/90";*/ 36 static char rcsid[] = "$Id: addbytes.c,v 1.4 1993/08/01 18:35:58 mycroft Exp $"; 37 #endif /* not lint */ 38 39 # include "curses.ext" 40 41 waddbytes(win, bytes, count) 42 reg WINDOW *win; 43 reg char *bytes; 44 int count; 45 { 46 chtype c; 47 reg int i; 48 49 for (i = 0; i < count; i++) { 50 c = (unsigned char) *bytes++; 51 if (_waddbytes(win, &c, 1) == ERR) 52 return ERR; 53 } 54 return OK; 55 } 56 57 /* 58 * This routine adds the character to the current position 59 * 60 */ 61 _waddbytes(win, bytes, count) 62 reg WINDOW *win; 63 reg chtype *bytes; 64 reg int count; 65 { 66 #define SYNCH_OUT() {win->_cury = y; win->_curx = x;} 67 #define SYNCH_IN() {y = win->_cury; x = win->_curx;} 68 reg int x, y; 69 reg int newx; 70 71 SYNCH_IN(); 72 while (count--) { 73 register chtype c; 74 static chtype blanks[] = {' ',' ',' ',' ',' ',' ',' ',' '}; 75 76 c = *bytes++; 77 switch (c) { 78 case '\t': 79 SYNCH_OUT(); 80 if (_waddbytes(win, blanks, 8-(x%8)) == ERR) { 81 return ERR; 82 } 83 SYNCH_IN(); 84 break; 85 86 default: 87 # ifdef FULLDEBUG 88 fprintf(outf, "ADDBYTES: 1: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]); 89 # endif 90 if (win->_flags & _STANDOUT) 91 c |= _STANDOUT; 92 { 93 # ifdef FULLDEBUG 94 fprintf(outf, "ADDBYTES(%0.2o, %d, %d)\n", win, y, x); 95 # endif 96 if (win->_y[y][x] != c) { 97 newx = x + win->_ch_off; 98 if (win->_firstch[y] == _NOCHANGE) { 99 win->_firstch[y] = 100 win->_lastch[y] = newx; 101 } else if (newx < win->_firstch[y]) 102 win->_firstch[y] = newx; 103 else if (newx > win->_lastch[y]) 104 win->_lastch[y] = newx; 105 # ifdef FULLDEBUG 106 fprintf(outf, "ADDBYTES: change gives f/l: %d/%d [%d/%d]\n", 107 win->_firstch[y], win->_lastch[y], 108 win->_firstch[y] - win->_ch_off, 109 win->_lastch[y] - win->_ch_off); 110 # endif 111 } 112 } 113 win->_y[y][x++] = c; 114 if (x >= win->_maxx) { 115 x = 0; 116 newline: 117 if (++y >= win->_maxy) 118 if (win->_scroll) { 119 --y; 120 SYNCH_OUT(); 121 scroll(win); 122 SYNCH_IN(); 123 } 124 else 125 return ERR; 126 } 127 # ifdef FULLDEBUG 128 fprintf(outf, "ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]); 129 # endif 130 break; 131 case '\n': 132 SYNCH_OUT(); 133 wclrtoeol(win); 134 SYNCH_IN(); 135 if (!NONL) 136 x = 0; 137 goto newline; 138 case '\r': 139 x = 0; 140 break; 141 case '\b': 142 if (--x < 0) 143 x = 0; 144 break; 145 } 146 } 147 SYNCH_OUT(); 148 return OK; 149 } 150