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 * 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 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 += wctomb(t, c); 51 continue; 52 } 53 } 54 *t++ = c; 55 } 56 *t = 0; 57 return t - b; 58 } 59