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7c671adf WJ |
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 | /* | |
41 | * This routine adds the character to the current position | |
42 | * | |
43 | */ | |
44 | waddbytes(win, bytes, count) | |
45 | reg WINDOW *win; | |
46 | reg char *bytes; | |
47 | reg int count; | |
48 | { | |
49 | #define SYNCH_OUT() {win->_cury = y; win->_curx = x;} | |
50 | #define SYNCH_IN() {y = win->_cury; x = win->_curx;} | |
51 | reg int x, y; | |
52 | reg int newx; | |
53 | ||
54 | SYNCH_IN(); | |
55 | # ifdef FULLDEBUG | |
56 | fprintf(outf, "ADDBYTES('%c') at (%d, %d)\n", c, y, x); | |
57 | # endif | |
58 | while (count--) { | |
59 | register int c; | |
60 | static char blanks[] = " "; | |
61 | ||
62 | c = *bytes++; | |
63 | switch (c) { | |
64 | case '\t': | |
65 | SYNCH_IN(); | |
66 | if (waddbytes(win, blanks, 8-(x%8)) == ERR) { | |
67 | return ERR; | |
68 | } | |
69 | SYNCH_OUT(); | |
70 | break; | |
71 | ||
72 | default: | |
73 | # ifdef FULLDEBUG | |
74 | fprintf(outf, "ADDBYTES: 1: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]); | |
75 | # endif | |
76 | if (win->_flags & _STANDOUT) | |
77 | c |= _STANDOUT; | |
78 | { | |
79 | # ifdef FULLDEBUG | |
80 | fprintf(outf, "ADDBYTES(%0.2o, %d, %d)\n", win, y, x); | |
81 | # endif | |
82 | if (win->_y[y][x] != c) { | |
83 | newx = x + win->_ch_off; | |
84 | if (win->_firstch[y] == _NOCHANGE) { | |
85 | win->_firstch[y] = | |
86 | win->_lastch[y] = newx; | |
87 | } else if (newx < win->_firstch[y]) | |
88 | win->_firstch[y] = newx; | |
89 | else if (newx > win->_lastch[y]) | |
90 | win->_lastch[y] = newx; | |
91 | # ifdef FULLDEBUG | |
92 | fprintf(outf, "ADDBYTES: change gives f/l: %d/%d [%d/%d]\n", | |
93 | win->_firstch[y], win->_lastch[y], | |
94 | win->_firstch[y] - win->_ch_off, | |
95 | win->_lastch[y] - win->_ch_off); | |
96 | # endif | |
97 | } | |
98 | } | |
99 | win->_y[y][x++] = c; | |
100 | if (x >= win->_maxx) { | |
101 | x = 0; | |
102 | newline: | |
103 | if (++y >= win->_maxy) | |
104 | if (win->_scroll) { | |
105 | SYNCH_OUT(); | |
106 | scroll(win); | |
107 | SYNCH_IN(); | |
108 | --y; | |
109 | } | |
110 | else | |
111 | return ERR; | |
112 | } | |
113 | # ifdef FULLDEBUG | |
114 | fprintf(outf, "ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]); | |
115 | # endif | |
116 | break; | |
117 | case '\n': | |
118 | SYNCH_OUT(); | |
119 | wclrtoeol(win); | |
120 | SYNCH_IN(); | |
121 | if (!NONL) | |
122 | x = 0; | |
123 | goto newline; | |
124 | case '\r': | |
125 | x = 0; | |
126 | break; | |
127 | case '\b': | |
128 | if (--x < 0) | |
129 | x = 0; | |
130 | break; | |
131 | } | |
132 | } | |
133 | SYNCH_OUT(); | |
134 | return OK; | |
135 | } |