1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1985-2011 AT&T Intellectual Property * 5* and is licensed under the * 6* Eclipse Public License, Version 1.0 * 7* by AT&T Intellectual Property * 8* * 9* A copy of the License is available at * 10* http://www.eclipse.org/org/documents/epl-v10.html * 11* (with md5 checksum b35adb5213ca9657e911e9befb180842) * 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 38NoN(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 52extern size_t 53strlcat(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