1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1985-2010 AT&T Intellectual Property *
5 * and is licensed under the *
6 * Common Public License, Version 1.0 *
7 * by AT&T Intellectual Property *
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*
ccnative(void * b,const void * a,size_t n)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