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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2009 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* Glenn Fowler
* AT&T Bell Laboratories
*/
#include "univlib.h"
#ifdef UNIV_MAX
#include <ctype.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);
}
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