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 * Glenn Fowler
25 * AT&T Research
26 *
27 * convert \X character constants in s in place
28 * the length of the converted s is returned (may have embedded \0's)
29 */
30
31 #include <ast.h>
32
33 int
stresc(register char * s)34 stresc(register char* s)
35 {
36 register char* t;
37 register unsigned int c;
38 char* b;
39 char* e;
40
41 b = t = s;
42 while (c = *s++)
43 {
44 if (c == '\\')
45 {
46 c = chresc(s - 1, &e);
47 s = e;
48 if (c > UCHAR_MAX)
49 {
50 t += mbconv(t, c);
51 continue;
52 }
53 }
54 *t++ = c;
55 }
56 *t = 0;
57 return t - b;
58 }
59