1da2e3ebchin/***********************************************************************
2da2e3ebchin*                                                                      *
3da2e3ebchin*               This software is part of the ast package               *
43e14f97Roger A. Faulkner*          Copyright (c) 1985-2010 AT&T Intellectual Property          *
5da2e3ebchin*                      and is licensed under the                       *
6da2e3ebchin*                  Common Public License, Version 1.0                  *
77c2fbfbApril Chin*                    by AT&T Intellectual Property                     *
8da2e3ebchin*                                                                      *
9da2e3ebchin*                A copy of the License is available at                 *
10da2e3ebchin*            http://www.opensource.org/licenses/cpl1.0.txt             *
11da2e3ebchin*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12da2e3ebchin*                                                                      *
13da2e3ebchin*              Information and Software Systems Research               *
14da2e3ebchin*                            AT&T Research                             *
15da2e3ebchin*                           Florham Park NJ                            *
16da2e3ebchin*                                                                      *
17da2e3ebchin*                 Glenn Fowler <gsf@research.att.com>                  *
18da2e3ebchin*                  David Korn <dgk@research.att.com>                   *
19da2e3ebchin*                   Phong Vo <kpv@research.att.com>                    *
20da2e3ebchin*                                                                      *
21da2e3ebchin***********************************************************************/
22da2e3ebchin#pragma prototyped
23da2e3ebchin/*
24da2e3ebchin * strlcat implementation
25da2e3ebchin */
26da2e3ebchin
27da2e3ebchin#define strlcat		______strlcat
28da2e3ebchin
29da2e3ebchin#include <ast.h>
30da2e3ebchin
31da2e3ebchin#undef	strlcat
32da2e3ebchin
33da2e3ebchin#undef	_def_map_ast
34da2e3ebchin#include <ast_map.h>
35da2e3ebchin
36da2e3ebchin#if _lib_strlcat
37da2e3ebchin
38da2e3ebchinNoN(strlcat)
39da2e3ebchin
40da2e3ebchin#else
41da2e3ebchin
42da2e3ebchin/*
4334f9b3eRoland Mainz * append t onto s limiting total size of s to n
44da2e3ebchin * s 0 terminated if n>0
45da2e3ebchin * min(n,strlen(s))+strlen(t) returned
46da2e3ebchin */
47da2e3ebchin
48da2e3ebchin#if defined(__EXPORT__)
49da2e3ebchin#define extern	__EXPORT__
50da2e3ebchin#endif
51da2e3ebchin
52da2e3ebchinextern size_t
53da2e3ebchinstrlcat(register char* s, register const char* t, register size_t n)
54da2e3ebchin{
5534f9b3eRoland Mainz	register size_t	m;
56da2e3ebchin	const char*	o = t;
57da2e3ebchin
5834f9b3eRoland Mainz	if (m = n)
59da2e3ebchin	{
6034f9b3eRoland Mainz		while (n && *s)
6134f9b3eRoland Mainz		{
6234f9b3eRoland Mainz			n--;
63da2e3ebchin			s++;
6434f9b3eRoland Mainz		}
6534f9b3eRoland Mainz		m -= n;
66da2e3ebchin		if (n)
67da2e3ebchin			do
68da2e3ebchin			{
69da2e3ebchin				if (!--n)
70da2e3ebchin				{
71da2e3ebchin					*s = 0;
72da2e3ebchin					break;
73da2e3ebchin				}
74da2e3ebchin			} while (*s++ = *t++);
75da2e3ebchin		else
76da2e3ebchin			*s = 0;
77da2e3ebchin	}
78da2e3ebchin	if (!n)
79da2e3ebchin		while (*t++);
8034f9b3eRoland Mainz	return (t - o) + m - 1;
81da2e3ebchin}
82da2e3ebchin
83da2e3ebchin#endif
84