xref: /titanic_41/usr/src/lib/libast/common/string/ccnative.c (revision d4660949aa62dd6a963f4913b7120b383cf473c4)
1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *           Copyright (c) 1985-2007 AT&T Knowledge Ventures            *
5 *                      and is licensed under the                       *
6 *                  Common Public License, Version 1.0                  *
7 *                      by AT&T Knowledge Ventures                      *
8 *                                                                      *
9 *                A copy of the License is available at                 *
10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
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 /*
25  * Glenn Fowler
26  * AT&T Research
27  *
28  * copy table with element size n
29  * indexed by CC_ASCII to table
30  * indexed by CC_NATIVE
31  */
32 
33 #include <ast.h>
34 #include <ccode.h>
35 
36 void*
37 ccnative(void* b, const void* a, size_t n)
38 {
39 #if CC_ASCII == CC_NATIVE
40 	return memcpy(b, a, n * (UCHAR_MAX + 1));
41 #else
42 	register int			c;
43 	register const unsigned char*	m;
44 	register unsigned char*		cb = (unsigned char*)b;
45 	register unsigned char*		ca = (unsigned char*)a;
46 
47 	m = CCMAP(CC_ASCII, CC_NATIVE);
48 	if (n == sizeof(char))
49 		for (c = 0; c <= UCHAR_MAX; c++)
50 			cb[c] = ca[m[c]];
51 	else
52 		for (c = 0; c <= UCHAR_MAX; c++)
53 			memcpy(cb + n * c, ca + n * m[c], n);
54 	return b;
55 #endif
56 }
57