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 * strlcat implementation 25 */ 26 27 #define strlcat ______strlcat 28 29 #include <ast.h> 30 31 #undef strlcat 32 33 #undef _def_map_ast 34 #include <ast_map.h> 35 36 #if _lib_strlcat 37 38 NoN(strlcat) 39 40 #else 41 42 /* 43 * append t onto s limiting total size of s to n 44 * s 0 terminated if n>0 45 * min(n,strlen(s))+strlen(t) returned 46 */ 47 48 #if defined(__EXPORT__) 49 #define extern __EXPORT__ 50 #endif 51 52 extern size_t 53 strlcat(register char* s, register const char* t, register size_t n) 54 { 55 register size_t m; 56 const char* o = t; 57 58 if (m = n) 59 { 60 while (n && *s) 61 { 62 n--; 63 s++; 64 } 65 m -= n; 66 if (n) 67 do 68 { 69 if (!--n) 70 { 71 *s = 0; 72 break; 73 } 74 } while (*s++ = *t++); 75 else 76 *s = 0; 77 } 78 if (!n) 79 while (*t++); 80 return (t - o) + m - 1; 81 } 82 83 #endif 84