xref: /titanic_41/usr/src/lib/libast/common/string/stracmp.c (revision 3e14f97f673e8a630f076077de35afdd43dc1587)
1da2e3ebdSchin /***********************************************************************
2da2e3ebdSchin *                                                                      *
3da2e3ebdSchin *               This software is part of the ast package               *
4*3e14f97fSRoger A. Faulkner *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
5da2e3ebdSchin *                      and is licensed under the                       *
6da2e3ebdSchin *                  Common Public License, Version 1.0                  *
77c2fbfb3SApril Chin *                    by AT&T Intellectual Property                     *
8da2e3ebdSchin *                                                                      *
9da2e3ebdSchin *                A copy of the License is available at                 *
10da2e3ebdSchin *            http://www.opensource.org/licenses/cpl1.0.txt             *
11da2e3ebdSchin *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
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 /*
25da2e3ebdSchin  * ccmapchr(ccmap(CC_NATIVE,CC_ASCII),c) and strcmp
26da2e3ebdSchin  */
27da2e3ebdSchin 
28da2e3ebdSchin #include <ast.h>
29da2e3ebdSchin #include <ccode.h>
30da2e3ebdSchin 
31da2e3ebdSchin #if _lib_stracmp
32da2e3ebdSchin 
33da2e3ebdSchin NoN(stracmp)
34da2e3ebdSchin 
35da2e3ebdSchin #else
36da2e3ebdSchin 
37da2e3ebdSchin #include <ctype.h>
38da2e3ebdSchin 
39da2e3ebdSchin int
40da2e3ebdSchin stracmp(const char* aa, const char* ab)
41da2e3ebdSchin {
42da2e3ebdSchin 	register unsigned char*	a;
43da2e3ebdSchin 	register unsigned char*	b;
44da2e3ebdSchin 	register unsigned char*	m;
45da2e3ebdSchin 	register int		c;
46da2e3ebdSchin 	register int		d;
47da2e3ebdSchin 
48da2e3ebdSchin 	if (!(m = ccmap(CC_NATIVE, CC_ASCII)))
49da2e3ebdSchin 		return strcmp(aa, ab);
50da2e3ebdSchin 	a = (unsigned char*)aa;
51da2e3ebdSchin 	b = (unsigned char*)ab;
52da2e3ebdSchin 	for (;;)
53da2e3ebdSchin 	{
54da2e3ebdSchin 		c = m[*a++];
55da2e3ebdSchin 		if (d = c - m[*b++])
56da2e3ebdSchin 			return d;
57da2e3ebdSchin 		if (!c)
58da2e3ebdSchin 			return 0;
59da2e3ebdSchin 	}
60da2e3ebdSchin }
61da2e3ebdSchin 
62da2e3ebdSchin #endif
63