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/* absolute.c: Test if a filename is absolute or explicitly relative.
Copyright (C) 1993, 94, 95 Karl Berry.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include <kpathsea/config.h>
#include <kpathsea/absolute.h>
#include <kpathsea/c-pathch.h>
/* Sorry this is such a system-dependent mess, but I can't see any way
to usefully generalize. */
boolean
kpse_absolute_p P2C(const_string, filename, boolean, relative_ok)
{
#ifdef VMS
#include <string.h>
return strcspn (filename, "]>:") != strlen (filename);
#else /* not VMS */
boolean absolute = IS_DIR_SEP (*filename)
#ifdef DOSISH
/* Novell allows non-alphanumeric drive letters. */
|| (*filename && IS_DEVICE_SEP (filename[1]))
#endif /* DOSISH */
#ifdef WIN32
/* UNC names */
|| (*filename == '\\' && filename[1] == '\\')
#endif
#ifdef AMIGA
/* Colon anywhere means a device. */
|| strchr (filename, ':')
#endif /* AMIGA */
;
boolean explicit_relative
= relative_ok
#ifdef AMIGA
/* Leading / is like `../' on Unix and DOS. Allow Unix syntax,
too, though, because of possible patch programs like
`UnixDirsII' by Martin Scott. */
&& IS_DIR_SEP (*filename) || 0
#endif /* AMIGA */
&& (*filename == '.' && (IS_DIR_SEP (filename[1])
|| (filename[1] == '.' && IS_DIR_SEP (filename[2]))));
return absolute || explicit_relative;
#endif /* not VMS */
}
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