/*

* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

* FUNCTION

* <<strncat>>---concatenate strings

* INDEX

* strncat

* ANSI_SYNOPSIS

* #include <string.h>

* char *strncat(char *<[dst]>, const char *<[src]>, size_t <[length]>);

* TRAD_SYNOPSIS

* #include <string.h>

* char *strncat(<[dst]>, <[src]>, <[length]>)

* char *<[dst]>;

* char *<[src]>;

* size_t <[length]>;

* <<strncat>> appends not more than <[length]> characters from

* the string pointed to by <[src]> (including the	terminating

* null character) to the end of the string pointed to by

* <[dst]>.  The initial character of <[src]> overwrites the null

* character at the end of <[dst]>.  A terminating null character

* is always appended to the result

* WARNINGS

* Note that a null is always appended, so that if the copy is

* limited by the <[length]> argument, the number of characters

* appended to <[dst]> is <<n + 1>>.

* RETURNS

* This function returns the initial value of <[dst]>

* PORTABILITY

* <<strncat>> is ANSI C.

* <<strncat>> requires no supporting OS subroutines.

* QUICKREF

* strncat ansi pure

* 

*

*/

#include <string.h>

/**

Append substring to string.

Appends num characters of src string to dest string. 

If the terminating null-character appears in src string 

before num character have been appended, the function appends 

the null-character to dest and ends.

The terminating null character in dest is overwritten by the first character of src.

The resulting string includes a null-character at end.

@return s1 is returned

@param s1 Pointer to a null-terminated string with enough space allocated to contain src

plus num characters. 

@param s2 Null-terminated string containing characters to be appended. 

@param n Number of characters to be appended from src to dest.

*/

EXPORT_C char *

strncat (char *s1, const char *s2, size_t n)

{

  char *s = s1;

  while (*s1)

    s1++;

  while (n-- != 0 && (*s1++ = *s2++)!=0)

    {

      if (n == 0)

	*s1 = '\0';

    }

  return s;

}