xref: /titanic_50/usr/src/lib/libast/common/string/strmode.c (revision 3e14f97f673e8a630f076077de35afdd43dc1587)

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1985-2010 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
/*
 * G. S. Fowler
 * AT&T Bell Laboratories
 *
 * return modex canonical representation of file mode bits
 * given ls -l style file mode string
 */

#include "modelib.h"

int
strmode(register const char* s)
{
	register int		c;
	register char*		t;
	register struct modeop*	p;
	int			mode;

	mode = 0;
	for (p = modetab; (c = *s++) && p < &modetab[MODELEN]; p++)
		for (t = p->name; *t; t++)
			if (*t == c)
			{
				c = t - p->name;
				mode |= (p->mask1 & (c << p->shift1)) | (p->mask2 & (c << p->shift2));
				break;
			}
	return(mode);
}