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