common/path/pathsetlink.c

	pathsetlink.c revision 3e14f97f673e8a630f076077de35afdd43dc1587
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/***********************************************************************
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                                                                      *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*               This software is part of the ast package               *
3e14f97f673e8a630f076077de35afdd43dc1587Roger A. Faulkner*          Copyright (c) 1985-2010 AT&T Intellectual Property          *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                      and is licensed under the                       *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                  Common Public License, Version 1.0                  *
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin*                    by AT&T Intellectual Property                     *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                                                                      *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                A copy of the License is available at                 *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*            http://www.opensource.org/licenses/cpl1.0.txt             *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                                                                      *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*              Information and Software Systems Research               *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                            AT&T Research                             *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                           Florham Park NJ                            *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                                                                      *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                 Glenn Fowler <gsf@research.att.com>                  *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                  David Korn <dgk@research.att.com>                   *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                   Phong Vo <kpv@research.att.com>                    *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*                                                                      *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin***********************************************************************/
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#pragma prototyped
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Glenn Fowler
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* AT&T Bell Laboratories
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin*/
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include "univlib.h"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * create symbolic name from external representation text in buf
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * the arg order matches link(2)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinint
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinpathsetlink(const char* buf, const char* name)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    register char*  t = (char*)buf;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#ifdef UNIV_MAX
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    register char*  s = (char*)buf;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    register char*  v;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    int     n;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    char        tmp[PATH_MAX];
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    while (*s)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin        if (*s++ == univ_cond[0] && !strncmp(s - 1, univ_cond, univ_size))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin        {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            s--;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            t = tmp;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            for (n = 0; n < UNIV_MAX; n++)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                if (*univ_name[n])
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                *t++ = ' ';
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#ifdef ATT_UNIV
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                *t++ = '1' + n;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                *t++ = ':';
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#else
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                for (v = univ_name[n]; *t = *v++; t++);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                *t++ = '%';
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#endif
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                for (v = (char*)buf; v < s; *t++ = *v++);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                for (v = univ_name[n]; *t = *v++; t++);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin                for (v = s + univ_size; *t = *v++; t++);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            t = tmp;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin            break;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin        }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#endif
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin    return(symlink(t, name));
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}