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