1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/*
* Copyright (c) 1996, 1997 Shigio Yamaguchi. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Shigio Yamaguchi.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* tab.c 20-Oct-97
*
*/
#include <stdio.h>
#define TABPOS(i) ((i)%8 == 0)
/*
* detab: convert tabs into spaces and print
*
* i) op FILE *
* i) buf string including tabs
*/
void
detab(op, buf)
FILE *op;
char *buf;
{
int src, dst;
char c;
src = dst = 0;
while ((c = buf[src++]) != 0) {
if (c == '\t') {
do {
(void)putc(' ', op);
dst++;
} while (!TABPOS(dst));
} else {
(void)putc(c, op);
dst++;
}
}
(void)putc('\n', op);
}
/*
* entab: convert spaces into tabs
*
* io) buf string buffer
*/
void
entab(buf)
char *buf;
{
int blanks = 0;
int pos, src, dst;
char c;
pos = src = dst = 0;
while ((c = buf[src++]) != 0) {
if (c == ' ') {
if (!TABPOS(++pos)) {
blanks++; /* count blanks */
continue;
}
buf[dst++] = '\t';
} else if (c == '\t') {
while (!TABPOS(++pos))
;
buf[dst++] = '\t';
} else {
++pos;
while (blanks--)
buf[dst++] = ' ';
buf[dst++] = c;
}
blanks = 0;
}
buf[dst] = 0;
}
|
