strmode.c revision da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2007 AT&T Knowledge Ventures *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Knowledge Ventures *
* *
* 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);
}