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
|
/* $Id: pathgetlink.c,v 1.1.1.1 2004/12/23 04:04:21 ellson Exp $ $Revision: 1.1.1.1 $ */
/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
/*
* Glenn Fowler
* AT&T Bell Laboratories
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "errno.h"
#ifdef UNIV_MAX
#include <ctype.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
/*
* return external representation for symbolic link text of name in buf
* the link text string length is returned
*/
int pathgetlink(const char *name, char *buf, int siz)
{
int n;
if ((n = readlink(name, buf, siz)) < 0)
return (-1);
if (n >= siz) {
errno = EINVAL;
return (-1);
}
buf[n] = 0;
#ifdef UNIV_MAX
if (isspace(*buf)) {
register char *s;
register char *t;
register char *u;
register char *v;
int match = 0;
char tmp[PATH_MAX];
s = buf;
t = tmp;
while (isalnum(*++s) || *s == '_' || *s == '.');
if (*s++) {
for (;;) {
if (!*s || isspace(*s)) {
if (match) {
*t = 0;
n = t - tmp;
strcpy(buf, tmp);
}
break;
}
if (t >= &tmp[sizeof(tmp)])
break;
*t++ = *s++;
if (!match && t < &tmp[sizeof(tmp) - univ_size + 1])
for (n = 0; n < UNIV_MAX; n++) {
if (*(v = s - 1) == *(u = univ_name[n])) {
while (*u && *v++ == *u)
u++;
if (!*u) {
match = 1;
strcpy(t - 1, univ_cond);
t += univ_size - 1;
s = v;
break;
}
}
}
}
}
}
#endif
return (n);
}
|
