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Speccy ClassiX 1998
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ixemul-41.4
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symlink.c
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1995-05-17
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/*
* This file is part of ixemul.library for the Amiga.
* Copyright (C) 1991, 1992 Markus M. Wild
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* symlink.c,v 1.1.1.1 1994/04/04 04:30:36 amiga Exp
*
* symlink.c,v
* Revision 1.1.1.1 1994/04/04 04:30:36 amiga
* Initial CVS check in.
*
* Revision 1.2 1992/07/04 19:21:58 mwild
* cut a possibly leading `./' in symlink contents. This is a kludge, but it's
* the only way to get `configure' working without changes.
*
* Revision 1.1 1992/05/14 19:55:40 mwild
* Initial revision
*
*/
#define KERNEL
#include "ixemul.h"
#if __GNUC__ != 2
#define alloca __builtin_alloca
#endif
#ifndef LINK_SOFT
#define LINK_SOFT 1
#endif
static void u2a(char *orig, char *new)
{
char *p;
if (ix.ix_translate_symlinks || index(orig, ':'))
{
strcpy(new, orig);
return;
}
if (*orig == '/')
{
while (*orig++ == '/');
while (*orig && *orig != '/')
*new++ = *orig++;
*new++ = ':';
if (*orig)
orig++;
}
while (*orig)
{
if (!memcmp(orig, "../", 3))
{
orig += 3;
*new++ = '/';
}
else if (!memcmp(orig, "./", 2))
orig += 2;
else if (*orig == '/')
orig++;
else if (!strcmp(orig, ".."))
{
orig += 2;
*new++ = '/';
}
else if (!strcmp(orig, "."))
orig++;
else
{
while (*orig && *orig != '/')
*new++ = *orig++;
if (*orig == '/')
*new++ = *orig++;
}
}
*new = '\0';
}
int
symlink (char *old, char *new)
{
char *lstr;
int len;
/* is long-alignment needed here? This is DOS, isn't it... */
lstr = alloca (strlen (old) + 4);
lstr = LONG_ALIGN (lstr);
u2a(old, lstr);
return __make_link (new, lstr, LINK_SOFT) == -1 ? 0 : -1;
}