| 1 | /*
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| 2 | * Copyright (c) 1987 Regents of the University of California.
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | * 1. Redistributions of source code must retain the above copyright
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| 9 | * notice, this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer in the
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| 12 | * documentation and/or other materials provided with the distribution.
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| 13 | * 3. All advertising materials mentioning features or use of this software
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| 14 | * must display the following acknowledgement:
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| 15 | * This product includes software developed by the University of
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| 16 | * California, Berkeley and its contributors.
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| 17 | * 4. Neither the name of the University nor the names of its contributors
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| 18 | * may be used to endorse or promote products derived from this software
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| 19 | * without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 | * SUCH DAMAGE.
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| 32 | */
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| 33 |
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| 34 | #ifndef lint
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| 35 | static char sccsid[] = "@(#)addbytes.c 5.4 (Berkeley) 6/1/90";
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| 36 | #endif /* not lint */
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| 37 |
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| 38 | # include "curses.ext"
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| 39 |
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| 40 | /*
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| 41 | * This routine adds the character to the current position
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| 42 | *
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| 43 | */
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| 44 | waddbytes(win, bytes, count)
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| 45 | reg WINDOW *win;
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| 46 | reg char *bytes;
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| 47 | reg int count;
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| 48 | {
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| 49 | #define SYNCH_OUT() {win->_cury = y; win->_curx = x;}
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| 50 | #define SYNCH_IN() {y = win->_cury; x = win->_curx;}
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| 51 | reg int x, y;
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| 52 | reg int newx;
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| 53 |
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| 54 | SYNCH_IN();
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| 55 | while (count--) {
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| 56 | register int c;
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| 57 | static char blanks[] = " ";
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| 58 |
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| 59 | c = *bytes++;
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| 60 | # ifdef FULLDEBUG
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| 61 | fprintf(outf, "ADDBYTES('%c') at (%d, %d)\n", c, y, x);
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| 62 | # endif
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| 63 | switch (c) {
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| 64 | case '\t':
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| 65 | SYNCH_OUT() /* not SYNCH_IN() */;
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| 66 | if (waddbytes(win, blanks, 8-(x%8)) == ERR) {
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| 67 | return ERR;
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| 68 | }
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| 69 | SYNCH_IN() /* not SYNCH_OUT() */;
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| 70 | break;
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| 71 |
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| 72 | default:
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| 73 | # ifdef FULLDEBUG
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| 74 | fprintf(outf, "ADDBYTES: 1: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]);
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| 75 | # endif
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| 76 | if (win->_flags & _STANDOUT)
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| 77 | c |= _STANDOUT;
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| 78 | {
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| 79 | # ifdef FULLDEBUG
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| 80 | fprintf(outf, "ADDBYTES(%0.2o, %d, %d)\n", win, y, x);
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| 81 | # endif
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| 82 | if (win->_y[y][x] != c) {
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| 83 | newx = x + win->_ch_off;
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| 84 | if (win->_firstch[y] == _NOCHANGE) {
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| 85 | win->_firstch[y] =
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| 86 | win->_lastch[y] = newx;
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| 87 | } else if (newx < win->_firstch[y])
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| 88 | win->_firstch[y] = newx;
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| 89 | else if (newx > win->_lastch[y])
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| 90 | win->_lastch[y] = newx;
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| 91 | # ifdef FULLDEBUG
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| 92 | fprintf(outf, "ADDBYTES: change gives f/l: %d/%d [%d/%d]\n",
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| 93 | win->_firstch[y], win->_lastch[y],
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| 94 | win->_firstch[y] - win->_ch_off,
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| 95 | win->_lastch[y] - win->_ch_off);
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| 96 | # endif
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| 97 | }
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| 98 | }
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| 99 | win->_y[y][x++] = c;
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| 100 | if (x >= win->_maxx) {
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| 101 | x = 0;
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| 102 | newline:
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| 103 | if (++y >= win->_maxy)
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| 104 | if (win->_scroll) {
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| 105 | --y;
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| 106 | SYNCH_OUT();
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| 107 | scroll(win);
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| 108 | SYNCH_IN();
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| 109 | }
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| 110 | else
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| 111 | return ERR;
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| 112 | }
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| 113 | # ifdef FULLDEBUG
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| 114 | fprintf(outf, "ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]);
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| 115 | # endif
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| 116 | break;
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| 117 | case '\n':
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| 118 | SYNCH_OUT();
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| 119 | wclrtoeol(win);
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| 120 | SYNCH_IN();
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| 121 | if (!NONL)
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| 122 | x = 0;
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| 123 | goto newline;
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| 124 | case '\r':
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| 125 | x = 0;
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| 126 | break;
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| 127 | case '\b':
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| 128 | if (--x < 0)
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| 129 | x = 0;
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| 130 | break;
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| 131 | }
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| 132 | }
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| 133 | SYNCH_OUT();
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| 134 | return OK;
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| 135 | }
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