sl@0: /*
sl@0: * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description:
sl@0: * FUNCTION
sl@0: * <<strncat>>---concatenate strings
sl@0: * INDEX
sl@0: * strncat
sl@0: * ANSI_SYNOPSIS
sl@0: * #include <string.h>
sl@0: * char *strncat(char *<[dst]>, const char *<[src]>, size_t <[length]>);
sl@0: * TRAD_SYNOPSIS
sl@0: * #include <string.h>
sl@0: * char *strncat(<[dst]>, <[src]>, <[length]>)
sl@0: * char *<[dst]>;
sl@0: * char *<[src]>;
sl@0: * size_t <[length]>;
sl@0: * <<strncat>> appends not more than <[length]> characters from
sl@0: * the string pointed to by <[src]> (including the	terminating
sl@0: * null character) to the end of the string pointed to by
sl@0: * <[dst]>.  The initial character of <[src]> overwrites the null
sl@0: * character at the end of <[dst]>.  A terminating null character
sl@0: * is always appended to the result
sl@0: * WARNINGS
sl@0: * Note that a null is always appended, so that if the copy is
sl@0: * limited by the <[length]> argument, the number of characters
sl@0: * appended to <[dst]> is <<n + 1>>.
sl@0: * RETURNS
sl@0: * This function returns the initial value of <[dst]>
sl@0: * PORTABILITY
sl@0: * <<strncat>> is ANSI C.
sl@0: * <<strncat>> requires no supporting OS subroutines.
sl@0: * QUICKREF
sl@0: * strncat ansi pure
sl@0: * 
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: 
sl@0: #include <string.h>
sl@0: 
sl@0: /**
sl@0: Append substring to string.
sl@0: Appends num characters of src string to dest string. 
sl@0: If the terminating null-character appears in src string 
sl@0: before num character have been appended, the function appends 
sl@0: the null-character to dest and ends.
sl@0: The terminating null character in dest is overwritten by the first character of src.
sl@0: The resulting string includes a null-character at end.
sl@0: @return s1 is returned
sl@0: @param s1 Pointer to a null-terminated string with enough space allocated to contain src
sl@0: plus num characters. 
sl@0: @param s2 Null-terminated string containing characters to be appended. 
sl@0: @param n Number of characters to be appended from src to dest.
sl@0: */
sl@0: EXPORT_C char *
sl@0: strncat (char *s1, const char *s2, size_t n)
sl@0: {
sl@0:   char *s = s1;
sl@0: 
sl@0:   while (*s1)
sl@0:     s1++;
sl@0:   while (n-- != 0 && (*s1++ = *s2++)!=0)
sl@0:     {
sl@0:       if (n == 0)
sl@0: 	*s1 = '\0';
sl@0:     }
sl@0: 
sl@0:   return s;
sl@0: }