1da2e3ebdSchin /***********************************************************************
2da2e3ebdSchin *                                                                      *
3da2e3ebdSchin *               This software is part of the ast package               *
4*b30d1939SAndy Fiddaman *          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5da2e3ebdSchin *                      and is licensed under the                       *
6*b30d1939SAndy Fiddaman *                 Eclipse Public License, Version 1.0                  *
77c2fbfb3SApril Chin *                    by AT&T Intellectual Property                     *
8da2e3ebdSchin *                                                                      *
9da2e3ebdSchin *                A copy of the License is available at                 *
10*b30d1939SAndy Fiddaman *          http://www.eclipse.org/org/documents/epl-v10.html           *
11*b30d1939SAndy Fiddaman *         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
12da2e3ebdSchin *                                                                      *
13da2e3ebdSchin *              Information and Software Systems Research               *
14da2e3ebdSchin *                            AT&T Research                             *
15da2e3ebdSchin *                           Florham Park NJ                            *
16da2e3ebdSchin *                                                                      *
17da2e3ebdSchin *                 Glenn Fowler <gsf@research.att.com>                  *
18da2e3ebdSchin *                  David Korn <dgk@research.att.com>                   *
19da2e3ebdSchin *                   Phong Vo <kpv@research.att.com>                    *
20da2e3ebdSchin *                                                                      *
21da2e3ebdSchin ***********************************************************************/
22da2e3ebdSchin #pragma prototyped
23da2e3ebdSchin /*
24da2e3ebdSchin  * Glenn Fowler
25da2e3ebdSchin  * AT&T Research
26da2e3ebdSchin  */
27da2e3ebdSchin 
28da2e3ebdSchin #include <ast.h>
29da2e3ebdSchin #include <hashkey.h>
30da2e3ebdSchin 
31da2e3ebdSchin long
strkey(register const char * s)32da2e3ebdSchin strkey(register const char* s)
33da2e3ebdSchin {
34da2e3ebdSchin 	register long	x = 0;
35da2e3ebdSchin 	register int	n = 0;
36da2e3ebdSchin 	register int	c;
37da2e3ebdSchin 
38da2e3ebdSchin 	while (n++ < HASHKEYMAX)
39da2e3ebdSchin 	{
40da2e3ebdSchin 		c = *s;
41da2e3ebdSchin 		if (c >= 'a' && c <= 'z')
42da2e3ebdSchin 			x = HASHKEYPART(x, c);
43da2e3ebdSchin 		else if (c >= '0' && c <= '9')
44da2e3ebdSchin 			x = HASHKEYPART(x, HASHKEYN(c));
45da2e3ebdSchin 		else break;
46da2e3ebdSchin 		s++;
47da2e3ebdSchin 	}
48da2e3ebdSchin 	return x;
49da2e3ebdSchin }
50